diff --git a/.babelrc b/.babelrc
new file mode 100644
index 0000000..6d18804
--- /dev/null
+++ b/.babelrc
@@ -0,0 +1,4 @@
+{
+    "presets": ["@babel/preset-env"],
+    "plugins": ["@babel/plugin-transform-async-to-generator", "@babel/plugin-transform-runtime"]
+}
diff --git a/Bootstrap.php b/Bootstrap.php
index 2371768..9106039 100644
--- a/Bootstrap.php
+++ b/Bootstrap.php
@@ -1,8 +1,10 @@
 <?php
-declare(strict_types = 1);
+
+declare(strict_types=1);
 
 namespace Plugin\s360_unzer_shop5;
 
+use JTL\Checkout\Bestellung;
 use JTL\Events\Dispatcher;
 use JTL\Helpers\Request;
 use JTL\Plugin\Bootstrapper;
@@ -10,20 +12,28 @@
 use JTL\Plugin\Payment\Method;
 use JTL\Shop;
 use JTL\Smarty\JTLSmarty;
+use Plugin\s360_unzer_shop5\paymentmethod\HeidelpayFlexiPayDirect;
+use Plugin\s360_unzer_shop5\paymentmethod\HeidelpayHirePurchaseDirectDebit;
 use Plugin\s360_unzer_shop5\paymentmethod\HeidelpayInvoiceFactoring;
 use Plugin\s360_unzer_shop5\Seeders\Shop4PluginMigrationSeeder;
+use Plugin\s360_unzer_shop5\src\ApplePay\CertificationService;
+use Plugin\s360_unzer_shop5\src\Controllers\Admin\AdminApplePayController;
+use Plugin\s360_unzer_shop5\src\Controllers\Admin\AdminKeyPairsController;
 use Plugin\s360_unzer_shop5\src\Controllers\Admin\AdminOrdersController;
 use Plugin\s360_unzer_shop5\src\Controllers\Admin\AdminSettingsController;
+use Plugin\s360_unzer_shop5\src\Controllers\ApplePayController;
 use Plugin\s360_unzer_shop5\src\Controllers\FrontendOutputController;
 use Plugin\s360_unzer_shop5\src\Controllers\PaymentController;
 use Plugin\s360_unzer_shop5\src\Controllers\SyncController;
 use Plugin\s360_unzer_shop5\src\Foundation\Seeder;
 use Plugin\s360_unzer_shop5\src\Foundation\ServiceProvider;
+use Plugin\s360_unzer_shop5\src\KeyPairs\KeyPairModel;
 use Plugin\s360_unzer_shop5\src\Orders\OrderMappingModel;
 use Plugin\s360_unzer_shop5\src\Payments\Interfaces\NotificationInterface;
 use Plugin\s360_unzer_shop5\src\Utils\Config;
 use Plugin\s360_unzer_shop5\src\Utils\JtlLinkHelper;
 use Plugin\s360_unzer_shop5\src\Utils\Logger;
+use Plugin\s360_unzer_shop5\src\Utils\SessionHelper;
 use Throwable;
 
 /**
@@ -50,15 +60,30 @@ public function boot(Dispatcher $dispatcher): void
          * Hook Registration & Handling
          */
         $dispatcher->listen('shop.hook.' . \HOOK_BESTELLABSCHLUSS_INC_BESTELLUNGINDB, function (array $args) {
-            /**
-             * Handle Pending Orders.
-             *
-             * Prevent the WaWi from collection an order that is currently PENDING.
-             * Therefore, we mark the order as already collected (not great but JTL does not have a pending state).
-             */
             try {
+                /** @var Bestellung $order */
+                $order = $args['oBestellung'];
+
+                /** @var SessionHelper $sessionHelper */
+                $sessionHelper = Shop::Container()->get(SessionHelper::class);
+
+                // update cBestellNummer because we might already have generated it but bestellungInDB() has generated
+                // a new one, resulting in a wrong order number in the confirmation mail for example!
+                $orderNumber = $sessionHelper->get(SessionHelper::KEY_ORDER_ID);
+                if (!empty($orderNumber) && $orderNumber != $order->cBestellNr) {
+                    $order->cBestellNr = $orderNumber;
+                } elseif ($sessionHelper->get(SessionHelper::KEY_CHECKOUT_SESSION)) {
+                    $sessionHelper->set(SessionHelper::KEY_ORDER_ID, $order->cBestellNr);
+                }
+
+                /**
+                 * Handle Pending Orders.
+                 *
+                 * Prevent the WaWi from collection an order that is currently PENDING.
+                 * Therefore, we mark the order as already collected (not great but JTL does not have a pending state).
+                 */
                 if (Shop::has('360HpOrderPending')) {
-                    $args['oBestellung']->cAbgeholt = 'Y';
+                    $order->cAbgeholt = 'Y';
                 }
             } catch (Throwable $th) {
                 Logger::error(
@@ -114,6 +139,23 @@ public function boot(Dispatcher $dispatcher): void
             }
         });
 
+        $dispatcher->listen('shop.hook.' . \HOOK_IO_HANDLE_REQUEST, function (array $args) {
+            // Hook into ajax request handling for apple pay merchant validation
+            try {
+                $controller = new ApplePayController(
+                    $this->getPlugin(),
+                    Shop::Container()->get(CertificationService::class),
+                    $args['io']
+                );
+                $controller->handle();
+            } catch (Throwable $th) {
+                Logger::error(
+                    'Error ' . $th->getCode() . ':' . $th->getMessage() . ', Exception in Hook '
+                    . \HOOK_IO_HANDLE_REQUEST
+                );
+            }
+        });
+
         // Backend Hooks
         if (!Shop::isFrontend()) {
             $dispatcher->listen('backend.notification', function () {
@@ -152,8 +194,9 @@ public function installed()
 
         // Deactivate Invoice Factoring Payment Method by setting nNutzbar to 0
         foreach ($this->getPlugin()->getPaymentMethods()->getMethods() as $method) {
-            if ($method->getActive() && $method->getUsable() &&
-                $method->getClassName() === HeidelpayInvoiceFactoring::class
+            if (
+                ($method->getActive() || $method->getUsable()) &&
+                in_array($method->getClassName(), $this->getDeprecatedPaymentMethods())
             ) {
                 $this->getDB()->update(
                     'tzahlungsart',
@@ -180,8 +223,9 @@ public function updated($oldVersion, $newVersion)
     {
         // Deactivate Invoice Factoring Payment Method by setting nNutzbar to 0
         foreach ($this->getPlugin()->getPaymentMethods()->getMethods() as $method) {
-            if (($method->getActive() || $method->getUsable()) &&
-                $method->getClassName() === HeidelpayInvoiceFactoring::class
+            if (
+                ($method->getActive() || $method->getUsable()) &&
+                in_array($method->getClassName(), $this->getDeprecatedPaymentMethods())
             ) {
                 $this->getDB()->update(
                     'tzahlungsart',
@@ -219,18 +263,48 @@ public function renderAdminMenuTab(string $tabName, int $menuID, JTLSmarty $smar
                             $controller->setModel($model);
                             $controller->handleAjax();
                         } catch (Throwable $th) {
-                            return json_encode([
+                            echo json_encode([
                                 'status'   => 'error',
                                 'messages' => [$th->getMessage()]
                             ]);
+                            die;
                         }
                     }
 
                     $controller = new AdminOrdersController($this->getPlugin(), $smarty);
                     $controller->setModel($model);
+                    return $controller->handle();
+                case JtlLinkHelper::ADMIN_TAB_APPLE_PAY:
+                    /** @var Config $config */
+                    $config = Shop::Container()->get(Config::class);
+                    if (!$config->get(Config::PRIVATE_KEY)) {
+                        return 'Missing API Key';
+                    }
+                    $controller = new AdminApplePayController($this->getPlugin(), $smarty);
+                    $controller->setCertService(Shop::Container()->get(CertificationService::class));
+
                     return $controller->handle();
                 case JtlLinkHelper::ADMIN_TAB_SETTINGS:
                     $controller = new AdminSettingsController($this->getPlugin(), $smarty);
+                    return $controller->handle();
+                case JtlLinkHelper::ADMIN_TAB_KEYPAIRS:
+                    $model = new KeyPairModel($this->getDB());
+                    $controller = new AdminKeyPairsController($this->getPlugin(), $smarty);
+                    $controller->setModel($model);
+
+                    // Handle Ajax Requests
+                    if (Request::isAjaxRequest() && Request::getVar('controller') == 'KeyPairs') {
+                        try {
+                            $controller->handleAjax();
+                        } catch (Throwable $th) {
+                            echo json_encode([
+                                'status'   => 'error',
+                                'messages' => [$th->getMessage()]
+                            ]);
+                            die;
+                        }
+                    }
+
                     return $controller->handle();
                 default:
                     return parent::renderAdminMenuTab($tabName, $menuID, $smarty);
@@ -240,4 +314,13 @@ public function renderAdminMenuTab(string $tabName, int $menuID, JTLSmarty $smar
             return $th->getMessage();
         }
     }
+
+    private function getDeprecatedPaymentMethods(): array
+    {
+        return  [
+            HeidelpayInvoiceFactoring::class,
+            HeidelpayHirePurchaseDirectDebit::class,
+            HeidelpayFlexiPayDirect::class
+        ];
+    }
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 315c744..2055bd5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,116 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+## [1.4.1] (April 2024)
+### Changed
+- reduce Unzer UI Component fields if they are already filled by the shop
+- Unzer Direct Debit only available for EUR
+
+### Fixed
+- Validation of the Unzer UI Components
+- use correct currency factor for instalments
+
+## [1.4.0] (April 2024)
+### Added
+- New Payment Method **Unzer Direct Debit**
+- Missing Translations
+
+### Fixed
+- prefill birthday field if alreay set by shop
+- fixed issue with unzer ui component validation
+- fixed issue with session new being cleared correctly when changing shipping/billing address in the checkout
+
+### Changed
+- updated payment and system requirements in the documenation
+
+## [1.3.2] (January 2024)
+### Fixed:
+- Fixed issue with API Call in Settings after fresh install
+
+## [1.3.1] (January 2024)
+### Added
+- Added Key Pair Management
+- Added new payment method **Unzer Instalment**
+- Added support for PHP 8.2 und PHP 8.3
+- Added improved error handling for api errors
+
+## Changed
+- updated Unzer SDK
+- highlight deprecated payment methods
+
+
+## [1.3.0] (August 2023)
+### Added
+- Added LICENSE and NOTICE
+
+### Changed
+- Changed Payment Method name from Unzer Invoice to Unzer Invoice (Paylater)
+
+### Fixed
+- Clear Plugin Session on the order status page in case that a user aborted its payment process
+
+### Removed
+- Removed deprecated Payment Method **Unzer Instalment**/**Unzer Ratenkauf**
+- Removed deprecated Payment Method **Unzer Bank Transfer**/**Unzer Direktüberweisung**
+
+## [1.2.1] (February 2023)
+### Added
+- Added compatability for **JTL 5.2 and PHP 8.1**
+- Added debug logs for the shipping API call
+- Added Reference Text for cancellations
+
+## Changed
+- Show Invoice ID in Order Detail only if either local invoice id or invoice id from the API response is available
+- Hide Unzer Insight Portal Button as the correct link to the order cannot be determined reliably
+
+### Fixed
+- Locale Mapping for Unzer UI Component
+- Fixed unzer applepay debugging when in sandbox mode
+- Fixed issue with submit button staying disabled on invalid input on the additional checkout step
+- Fixed rounding issue in total gross amount API field
+
+## [1.2.0] (November 2022)
+### Added
+- Added Bancontact as payment method
+- Added Unzer Rechnung (Buy Now, Pay Later) as payment method
+- Added option to disable automatic setting of incoming payments
+
+### Changed
+- Unzer SDK version updated to 1.2.0.0
+
+## [1.1.0] (July 2022)
+### Added
+- Added company info to customer object
+- Added verification and notification if frontend URLs have changed due to JTL/plugin updates and how to correct them
+- Added VAT amount to shopping cart object
+- Added ApplePay payment method
+
+### Changed
+- Unzer SDK version updated to 1.1.4.2
+- Remove default value for payment method selection, as the NOVA theme already has a back button in the additional payment step.
+
+### Fixed
+- Fixed an issue with instalments sending incorrect/temporary order numbers to Unzer
+- Fixed an unhandled error when retrieving refunds in the backend
+- Fixed problem with umlauts in intermediate payment step encoded with HTML entities instead of UTF-8
+- Fixed problem with cancelling Invoice (Secured) orders before they are completed
+- Fixed problem with wrong order number in order confirmation emails
+
+## [1.0.2] (March 2022)
+### Added
+- add minimum customer info (name and email) to all payments
+
+### Changed
+- use short id as transaction id in payment history (WaWi)
+
+### Fixed
+- set default db engine and charset when creating database tables to avoid issues due to weird defaults
+- add error handling to avoid issues in the frontend when API is not callable *(ie missing keys)*
+- fix issue with -0.0 beeing interpreted as negative in the unzer api
+- potential fix for mismatch of order ids between the unzer insight portal and the shop
+- error in the placeholder of the public key setting in the backend
+
+
 ## [1.0.1] (November 2021)
 ### Added
 - JTL Shop 5.1 Compatability
@@ -17,6 +127,3 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) a
 ## [1.0.0] (July 2021)
 ### Added
 - Initial Release
-
-[1.0.1]: https://github.com/unzerdev/jtl5/compare/1.0.0...1.0.1
-[1.0.0]: https://github.com/unzerdev/jtl5
\ No newline at end of file
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..086a99c
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,201 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright 2020 - today Unzer GmbH
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
\ No newline at end of file
diff --git a/Migrations/Migration20201027083900.php b/Migrations/Migration20201027083900.php
index ef5c81d..9b8aeed 100644
--- a/Migrations/Migration20201027083900.php
+++ b/Migrations/Migration20201027083900.php
@@ -22,7 +22,7 @@ public function up()
         $this->execute('CREATE TABLE IF NOT EXISTS ' . Config::TABLE . ' (
             `key` VARCHAR(255) NOT NULL PRIMARY KEY,
             `value` VARCHAR(255) NOT NULL
-        );');
+        ) ENGINE=InnoDB CHARSET=utf8 COLLATE utf8_unicode_ci;');
 
         // Create Order Mapping Table
         $this->execute(
@@ -36,7 +36,7 @@ public function up()
                 `payment_type_name` VARCHAR(255),   /* payment type name from heidelpay */
                 `payment_type_id` VARCHAR(255),     /* payment type id from heidelpay */
                 PRIMARY KEY (`jtl_order_id`, `payment_id`)
-            );'
+            ) ENGINE=InnoDB CHARSET=utf8 COLLATE utf8_unicode_ci;'
         );
 
         // Create Charge Mapping Table
@@ -46,7 +46,7 @@ public function up()
                 `order_id`  INT(10) NOT NULL,    /* jtl order table id (kBestellung) */
                 `charge_id` VARCHAR(255),        /* charge id from heidelpay */
                 `payment_id` VARCHAR(255)       /* payment id from heidelpay */
-            );'
+            ) ENGINE=InnoDB CHARSET=utf8 COLLATE utf8_unicode_ci;'
         );
     }
 
diff --git a/Migrations/Migration20220511114913.php b/Migrations/Migration20220511114913.php
new file mode 100644
index 0000000..7428384
--- /dev/null
+++ b/Migrations/Migration20220511114913.php
@@ -0,0 +1,28 @@
+<?php
+declare(strict_types = 1);
+
+namespace Plugin\s360_unzer_shop5\Migrations;
+
+use JTL\Plugin\Migration;
+use JTL\Update\IMigration;
+use Plugin\s360_unzer_shop5\src\Utils\Config;
+
+/**
+ * Migration for Unzer Shop 5 Plugin
+ * @package Plugin\s360_unzer_shop5\src\Migrations
+ */
+class Migration20220511114913 extends Migration implements IMigration
+{
+    public function up()
+    {
+        // Create Config Table
+        $this->execute(
+            'ALTER TABLE ' . Config::TABLE . '
+            CHANGE `value` `value` TEXT CHARACTER SET utf8 COLLATE utf8_unicode_ci NOT NULL;'
+        );
+    }
+
+    public function down()
+    {
+    }
+}
diff --git a/Migrations/Migration20221006103000.php b/Migrations/Migration20221006103000.php
new file mode 100644
index 0000000..45e5a75
--- /dev/null
+++ b/Migrations/Migration20221006103000.php
@@ -0,0 +1,28 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Plugin\s360_unzer_shop5\Migrations;
+
+use JTL\Plugin\Migration;
+use JTL\Update\IMigration;
+use Plugin\s360_unzer_shop5\src\Charges\ChargeMappingModel;
+
+/**
+ * Migration for Unzer Shop 5 Plugin
+ * @package Plugin\s360_unzer_shop5\src\Migrations
+ */
+class Migration20221006103000 extends Migration implements IMigration
+{
+    public function up()
+    {
+        $this->execute(
+            'ALTER TABLE ' . ChargeMappingModel::CHARGE_TABLE . '
+            ADD `delivery_id` INT(10) DEFAULT NULL AFTER `payment_id`;'
+        );
+    }
+
+    public function down()
+    {
+    }
+}
diff --git a/Migrations/Migration20230919100000.php b/Migrations/Migration20230919100000.php
new file mode 100644
index 0000000..25a2765
--- /dev/null
+++ b/Migrations/Migration20230919100000.php
@@ -0,0 +1,35 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Plugin\s360_unzer_shop5\Migrations;
+
+use JTL\DB\ReturnType;
+use JTL\Plugin\Migration;
+use JTL\Update\IMigration;
+use Plugin\s360_unzer_shop5\src\KeyPairs\KeyPairModel;
+
+class Migration20230919100000 extends Migration implements IMigration
+{
+    public function up()
+    {
+        // Create Order Mapping Table
+        $this->execute(
+            'CREATE TABLE IF NOT EXISTS ' . KeyPairModel::TABLE . ' (
+                `id` INT(10) NOT NULL AUTO_INCREMENT PRIMARY KEY,
+                `private_key` VARCHAR(255) NOT NULL,
+                `public_key` VARCHAR(255) NOT NULL,
+                `is_b2b` TINYINT(1) DEFAULT 0,
+                `currency_id` INT(10) NOT NULL,
+                `payment_method_id` INT(10) NOT NULL
+            ) ENGINE=InnoDB CHARSET=utf8 COLLATE utf8_unicode_ci;'
+        );
+    }
+
+    public function down()
+    {
+        if ($this->doDeleteData()) {
+            $this->execute('DROP TABLE IF EXISTS `' . KeyPairModel::TABLE . '`', ReturnType::DEFAULT);
+        }
+    }
+}
diff --git a/Migrations/Migration20230925100000.php b/Migrations/Migration20230925100000.php
new file mode 100644
index 0000000..64f8a8a
--- /dev/null
+++ b/Migrations/Migration20230925100000.php
@@ -0,0 +1,43 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Plugin\s360_unzer_shop5\Migrations;
+
+use JTL\DB\ReturnType;
+use JTL\Plugin\Migration;
+use JTL\Update\IMigration;
+use Plugin\s360_unzer_shop5\src\Orders\OrderMappingModel;
+
+class Migration20230925100000 extends Migration implements IMigration
+{
+    public function up()
+    {
+        if (!$this->columnExists()) {
+            $this->execute(
+                'ALTER TABLE ' . OrderMappingModel::ORDER_TABLE . '
+                ADD COLUMN  `payment_method_id` INT(10) NULL'
+            );
+        }
+    }
+
+    public function down()
+    {
+        if ($this->doDeleteData() && $this->columnExists()) {
+            $this->execute(
+                'ALTER TABLE `' . OrderMappingModel::ORDER_TABLE . '` DROP COLUMN payment_method_id',
+                ReturnType::DEFAULT
+            );
+        }
+    }
+
+    private function columnExists(): bool
+    {
+        return !empty(
+            $this->getDB()->executeQuery(
+                'SHOW COLUMNS FROM ' . OrderMappingModel::ORDER_TABLE . ' LIKE \'payment_method_id\'',
+                ReturnType::AFFECTED_ROWS
+            )
+        );
+    }
+}
diff --git a/NOTICE b/NOTICE
new file mode 100644
index 0000000..e789e5d
--- /dev/null
+++ b/NOTICE
@@ -0,0 +1,13 @@
+Copyright (C) 2020 - today Unzer GmbH
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
\ No newline at end of file
diff --git a/README.md b/README.md
index e06314f..62fa308 100644
--- a/README.md
+++ b/README.md
@@ -1,51 +1,56 @@
-# Unzer payment methods (JTL shop 5)
+# Unzer Zahlungsarten (JTL-Shop 5)
 
-This plugin integrates the following Unzer payment methods in the JTL Shop:
+Dieses Plugin integriert die folgenden Unzer-Zahlungsarten im JTL Shop:
 
 - Alipay
+- ApplePay
+- Bancontact
+- Direktüberweisung
 - EPS
 - Giropay
 - iDEAL
-- Credit Card / Debit Card
+- Kreditkarte
+- Lastschrift
+- SEPA Lastschrift
 - PayPal
 - Przelewy24
+- Ratenkauf
+- Rechnungskauf
 - SOFORT
+- Vorkasse
 - WeChat Pay
-- Invoice
-- Sepa Direct Debit
-- Unzer Bank Transfer
-- Unzer Instalment
-- Unzer Invoice secured
-- Unzer Direct Debit secured
-- Unzer Prepayment
+- (Veraltet) Unzer Ratenkauf
+- (Veraltet) Unzer Rechnungskauf
+- (Veraltet) Unzer Rechnungskauf (secured)
+- (Veraltet) Unzer Lastschrift Gesichert
 
 ## Installation / Update
-### System requirements
-- JTL-Shop 5.0.0+ and its requirements
-- PHP 7.1 - 7.4
-- The following PHP extensions
+### Systemvoraussetzungen
+- JTL-Shop 5.0.0+ und dessen Vorraussetzungen
+- PHP Version: 7.4 - 8.3
+- Die folgenden PHP Erweiterungen
   - ext-json
   - ext-curl
-- In order to avoid rounding errors when transmitting floating point values to the API we recommend you to set the following value in your `php.ini`, which will select an enhanced algorithm for rounding such numbers.
-~~~ini
-// php.ini
-; When floats & doubles are serialized store serialize_precision significant
-; digits after the floating point. The default value ensures that when floats
-; are decoded with unserialize, the data will remain the same.
-serialize_precision = -1
-~~~
 
+### Weitere Voraussetzungen
+Sie müssen bei Unzer registriert sein.
 
-### Further requirements
-You must be registered with Unzer.
+#### Apple Pay
+Wenn Sie Apple Pay auf Ihrer Seite anbieten möchten, müssen Sie außerdem die folgenden Voraussetzungen erfüllen:
 
-### Plugin installation
-The installation of the plugin is done in the standard procedure for JTL-Shop 5 as described [here](https://jtl-devguide.readthedocs.io/projects/jtl-shop/de/latest/shop_plugins/allgemein.html#pluginverwaltung-im-backend-von-jtl-shop).
+- Apple Developer Account mit Teilnahme am Apple Developer Program, siehe Mitgliedschaft auswählen - Support - Apple Developer
 
-### Plugin update
-For an update, upload the plugin to the `./plugins/` folder or via the plugin manager in the shop backend in the latest version as for an installation (and overwrite all existing plugin files if necessary) or follow the instructions of the Extension Store.
-Then go to the plugin manager in the shop backend and press the update button.
+> **Ohne Teilnahme am am Apple Developer Program kann Apple Pay im Plugin nicht genutzt werden! Der einfache und kostenlose Apple Developer Account reicht nicht aus!**
 
-## Configuration
-After the actual plugin installation, it is necessary to activate the new payment methods and add them to the desired shipping methods.
-Further information and configuration can be found in the [Instructions](https://redirect.solution360.de/?r=docsunzerjtl5).
\ No newline at end of file
+### Plugin-Installation
+Die Installation des Plugins erfolgt im Standardverfahren für JTL-Shop 5, wie es [hier](https://jtl-devguide.readthedocs.io/projects/jtl-shop/de/latest/shop_plugins/allgemein.html#pluginverwaltung-im-backend-von-jtl-shop) beschrieben ist.
+
+### Plugin-Update
+Für ein Update laden Sie das Plugin wie bei einer Installation in der neuesten Version hoch (und überschreiben ggf. alle vorhandenen Plugindateien) oder folgen Sie den Hinweisen des Extension Stores.
+
+Gehen Sie dann in die Pluginverwaltung und betätigen Sie den Update-Button.
+
+## Konfiguration
+Nach der eigentlichen Plugin-Installation ist es notwendig, die neuen Zahlungsmethoden zu aktivieren und zu den gewünschten Versandarten hinzuzufügen.
+
+Weitere Informationen und Konfiguration finden Sie in der [Anleitung](https://redirect.solution360.de/?r=docsunzerjtl5)
\ No newline at end of file
diff --git a/adminmenu/js/admin.js b/adminmenu/js/admin.js
index 9c1f36c..7e82476 100644
--- a/adminmenu/js/admin.js
+++ b/adminmenu/js/admin.js
@@ -109,9 +109,13 @@
         );
     };
 
-    $(document).ready(function () {
+    $(function () {
         // Colored Input
         $('.form-colored').each(previewColor).on('change keyup blur input focus', previewColor);
         window.hpAdmin = new HeidelpayAdmin(window.hpAdminAjaxUrl);
+
+        $('.hp-admin-content .custom-file-input').on('change',function(e) {
+            $(this).next('.custom-file-label').html(e.target.files[0].name);
+        });
     });
 })(jQuery, window);
\ No newline at end of file
diff --git a/adminmenu/js/keypairs.js b/adminmenu/js/keypairs.js
new file mode 100644
index 0000000..2b8543a
--- /dev/null
+++ b/adminmenu/js/keypairs.js
@@ -0,0 +1,102 @@
+(function ($, window, undefined) {
+    $(function () {
+        // Setup
+        const admin = window.hpAdmin;
+        const $keyPairs = $('.hp-keypairs');
+        const $modal = $('#hp-keypair-modal');
+        const $addTrigger = $('#hp-keypairs-add');
+
+        /**
+         *
+         * @param {{template: ?String}} response
+         */
+        const setModalContent = (response) => {
+            if (response && response.template) {
+                const $body = $modal.find('.modal-body');
+
+                var show = () => {
+                    $body.html(response.template);
+                    $modal.modal('show');
+                };
+
+                if ($modal.hasClass('modal-loaded')) {
+                    $modal.modal('hide');
+                    show();
+                } else {
+                    show();
+                    $modal.addClass('modal-loaded');
+                }
+            }
+        };
+
+        /**
+         * @param {JQuery.Event} e
+         */
+        const onDelete = (e) => {
+            const form = $(e.target);
+            const data = {
+                id: form.closest('tr').data('id'),
+                jtl_token: form.find('.jtl_token').val()
+            };
+
+            e.preventDefault();
+            admin.doAjaxCall('KeyPairs:delete', data, (response) => {
+                if (response && response.listing) {
+                    $('#modal-footer-delete-confirm').modal('hide');
+                    $keyPairs.html(response.listing);
+                    deleteConfirmation();
+                }
+            });
+        };
+
+        /**
+         * @param {JQuery.Event} e
+         */
+        const onAdd = (e) => {
+            e.preventDefault();
+            admin.doAjaxCall('KeyPairs:edit', { id: null }, setModalContent);
+        };
+
+        /**
+         * @param {JQuery.Event} e
+         */
+        const onSave = (e) => {
+            e.preventDefault();
+
+            const fields = $(e.target).find('input,select');
+            const data = {};
+            fields.each((i, el) => {
+                data[el.name] = $(el).is(':checkbox') ? $(el).is(':checked') : $(el).val();
+            });
+
+            admin.doAjaxCall('KeyPairs:save', data, (response) => {
+                if (response.status !== 'success') {
+                    return;
+                }
+
+                if (response.template) {
+                    $modal.find('.modal-body').html(response.template);
+                }
+
+                if (response.listing) {
+                    $keyPairs.html(response.listing);
+                    deleteConfirmation();
+                }
+            });
+        };
+
+        /**
+         * @param {JQuery.Event} e
+         */
+        const onEdit = (e) => {
+            e.preventDefault();
+            admin.doAjaxCall('KeyPairs:edit', { id: $(e.target).closest('tr').data('id') }, setModalContent);
+        };
+
+        // Register Events
+        $keyPairs.on('submit', '.keypair-action-form', onDelete);
+        $addTrigger.on('click', onAdd);
+        $modal.find('form').on('submit', onSave);
+        $keyPairs.on('click', '[data-edit]', onEdit);
+    });
+})(jQuery, window);
\ No newline at end of file
diff --git a/adminmenu/template/applepay.tpl b/adminmenu/template/applepay.tpl
new file mode 100644
index 0000000..b711ba2
--- /dev/null
+++ b/adminmenu/template/applepay.tpl
@@ -0,0 +1,177 @@
+{include file="{$hpAdmin.adminTemplatePath}partials/_header.tpl"}
+
+<div class="hp-admin-content">
+    <div class="row">
+        <div class="col-xs-12 col-12">
+            <form action="{$hpSettings.formAction}" method="post" enctype="multipart/form-data">
+                {$jtl_token}
+
+                {* General Config Data *}
+                <div class="panel panel-default card mb-3">
+                    <div class="panel-heading card-title mx-4 mt-4">
+                        <h3 class="panel-title">{__('hpApplePayPaymentGeneral')}</h3>
+                    </div>
+
+                    <div class="panel-body card-body">
+                        {* Merchant ID *}
+                        <div class="hp-admin-option row mb-2">
+                            <div class="hp-admin-option__title col-xs-3 col-3">
+                                <label for="hpSettings-applepay-merchant-id">{__('hpApplePayPaymentGeneralMerchantId')}</label>
+                            </div>
+                            <div class="hp-admin-option__input col-xs-9 col-9">
+                                <input type="text" class="form-control" name="hpSettings-applepay-merchant-id" id="hpSettings-applepay-merchant-id" value="{if isset($hpSettings.merchantId)}{$hpSettings.merchantId}{/if}" />
+                                <small class="form-text help-block text-muted">{__('hpApplePayPaymentGeneralMerchantIdHelp')}</small>
+                            </div>
+                        </div>
+
+                        {* Merchant Domain *}
+                        <div class="hp-admin-option row mb-2">
+                            <div class="hp-admin-option__title col-xs-3 col-3">
+                                <label for="hpSettings-applepay-merchant-domain">{__('hpApplePayPaymentGeneralMerchantDomain')}</label>
+                            </div>
+                            <div class="hp-admin-option__input col-xs-9 col-9">
+                                <input type="text" class="form-control" name="hpSettings-applepay-merchant-domain" id="hpSettings-applepay-merchant-domain" value="{if isset($hpSettings.merchantDomain)}{$hpSettings.merchantDomain}{/if}" />
+                                <small class="form-text help-block text-muted">{__('hpApplePayPaymentGeneralMerchantDomainHelp')}</small>
+                            </div>
+                        </div>
+                    </div>
+                </div>
+
+                {* Payment Processing *}
+                <div class="panel panel-default card mb-3">
+                    <div class="panel-heading card-title mx-4 mt-4">
+                        <h3 class="panel-title">{__('hpApplePayPaymentProcessingCertificate')}</h3>
+                    </div>
+
+                    <div class="panel-body card-body">
+                        {* CSR*}
+                        <div class="hp-admin-option row mb-2">
+                            <div class="hp-admin-option__title col-xs-3 col-3">
+                                <label for="hpSettings-applepay-payment-csr">{__('hpApplePayPaymentProcessingCertificateCSR')}</label>
+                            </div>
+                            <div class="hp-admin-option__input col-xs-9 col-4">
+                                <textarea class="form-control" rows="5" disabled id="hpSettings-applepay-payment-csr">{if isset($hpSettings.certs.applepay_payment_csr)}{$hpSettings.certs.applepay_payment_csr}{/if}</textarea>
+                                <small class="form-text help-block text-muted">{__('hpApplePayPaymentProcessingCertificateCSRHelp')}</small>
+                            </div>
+                            <div class="hp-admin-option__actions col-xs-3 col-5">
+                                <button type="submit" name="refreshPaymentProcessing" value="1" class="btn btn-info">
+                                    <i class="fa fa-refresh"></i>&nbsp; {__('hpApplePayRefreshCert')}
+                                </button>
+                                <a href="{$hpSettings.pluginUrl}&download=payment_processing_certification" target="_blank" class="btn btn-info">
+                                    <i class="fa fa-download"></i>&nbsp; {__('hpApplePayDownloadCert')}
+                                </a>
+                            </div>
+                        </div>
+
+                        {* Apple Cert *}
+                        <div class="hp-admin-option row mb-2">
+                            <div class="hp-admin-option__title col-xs-3 col-3">
+                                <label for="hpSettings-applepay-payment-cert">{__('hpApplePayPaymentProcessingCertificateApple')}</label>
+                            </div>
+                            <div class="hp-admin-option__input col-xs-9 col-4">
+                                <textarea class="form-control" rows="5" disabled id="hpSettings-applepay-payment-cert">{if isset($hpSettings.certs.applepay_payment_signed_pem)}{$hpSettings.certs.applepay_payment_signed_pem}{/if}</textarea>
+                                <small class="form-text help-block text-muted">{__('hpApplePayPaymentProcessingCertificateAppleHelp')}</small>
+                            </div>
+                            <div class="hp-admin-option__actions col-xs-3 col-5">
+                                <div class="input-group mb-3">
+                                    <div class="custom-file">
+                                        <input type="file" accept=".cer" name="hpSettings-applepay-payment-upload" class="custom-file-input" id="hpSettings-applepay-payment-upload-field" aria-describedby="hpSettings-applepay-payment-upload" />
+                                        <label class="custom-file-label" for="hpSettings-applepay-payment-upload-field">{__('hpApplePayUploadCert')}</label>
+                                    </div>
+
+                                    <div class="input-group-append">
+                                        <label for="hpSettings-applepay-payment-upload-field" class="input-group-text bg-primary text-white" id="hpSettings-applepay-payment-upload">
+                                            <i class="fas fa-upload"></i>&nbsp; {__('hpApplePayUpload')}
+                                        </label>
+                                    </div>
+                                </div>
+                            </div>
+                        </div>
+
+                        {* Unzer IDs *}
+                        <div class="hp-admin-option row mb-2">
+                            <div class="hp-admin-option__title col-xs-3 col-3">
+                                <label for="hpSettings-applepay-unzer-ids">{__('hpApplePayUnzerIDs')}</label>
+                            </div>
+                            <div class="hp-admin-option__input col-xs-9 col-4">
+                                <input type="text" class="form-control mb-3" disabled name="hpSettings-applepay-unzer-cert-id" id="hpSettings-applepay-unzer-cert-id" value="{if isset($hpSettings.unzerCertificateId)}{$hpSettings.unzerCertificateId}{/if}" />
+                                <input type="text" class="form-control mb-3" disabled name="hpSettings-applepay-unzer-privkey-id" id="hpSettings-applepay-unzer-privkey-id" value="{if isset($hpSettings.unzerPrivateKeyId)}{$hpSettings.unzerPrivateKeyId}{/if}" />
+                            </div>
+                            <div class="hp-admin-option__actions col-xs-3 col-5">
+                                <button type="submit" name="activateCertificate" value="1" class="btn btn-info">
+                                    <i class="fa fa-refresh"></i>&nbsp; {__('hpApplePayUpdateCert')}
+                                </button>
+                            </div>
+                        </div>
+                    </div>
+                </div>
+
+                {* Merchant Identity *}
+                <div class="panel panel-default card mb-3">
+                    <div class="panel-heading card-title mx-4 mt-4">
+                        <h3 class="panel-title">{__('hpApplePayMerchantIdentityCertificate')}</h3>
+                    </div>
+
+                    <div class="panel-body card-body">
+                        {* CSR *}
+                        <div class="hp-admin-option row mb-2">
+                            <div class="hp-admin-option__title col-xs-3 col-3">
+                                <label for="hpSettings-applepay-merchant-csr">{__('hpApplePayMerchantIdentityCertificateCSR')}</label>
+                            </div>
+                            <div class="hp-admin-option__input col-xs-9 col-4">
+                                <textarea class="form-control" rows="5" disabled id="hpSettings-applepay-merchant-csr">{if isset($hpSettings.certs.applepay_merchant_csr)}{$hpSettings.certs.applepay_merchant_csr}{/if}</textarea>
+                                <small class="form-text help-block text-muted">{__('hpApplePayMerchantIdentityCertificateCSRHelp')}</small>
+                            </div>
+                            <div class="hp-admin-option__actions col-xs-3 col-5">
+                                <button type="submit" name="refreshMerchantValidation" value="1" class="btn btn-info">
+                                    <i class="fa fa-refresh"></i>&nbsp; {__('hpApplePayRefreshCert')}
+                                </button>
+                                <a href="{$hpSettings.pluginUrl}&download=merchant_identity_certification" target="_blank" class="btn btn-info">
+                                    <i class="fa fa-download"></i>&nbsp; {__('hpApplePayDownloadCert')}
+                                </a>
+                            </div>
+                        </div>
+
+                        {* Apple Cert *}
+                        <div class="hp-admin-option row mb-2">
+                            <div class="hp-admin-option__title col-xs-3 col-3">
+                                <label for="hpSettings-applepay-merchant-cert">{__('hpApplePayMerchantIdentityCertificateApple')}</label>
+                            </div>
+                            <div class="hp-admin-option__input col-xs-9 col-4">
+                                <textarea class="form-control" rows="5" disabled id="hpSettings-applepay-merchant-cert">{if isset($hpSettings.certs.applepay_merchant_signed_pem)}{$hpSettings.certs.applepay_merchant_signed_pem}{/if}</textarea>
+                                <small class="form-text help-block text-muted">{__('hpApplePayMerchantIdentityCertificateAppleHelp')}</small>
+                            </div>
+                            <div class="hp-admin-option__actions col-xs-3 col-5">
+                                <div class="input-group mb-3">
+                                    <div class="custom-file">
+                                        <input type="file" accept=".cer" name="hpSettings-applepay-merchant-upload" class="custom-file-input" id="hpSettings-applepay-merchant-upload-field" aria-describedby="hpSettings-applepay-merchant-upload" />
+                                        <label class="custom-file-label" for="hpSettings-applepay-merchant-upload-field">{__('hpApplePayUploadCert')}</label>
+                                    </div>
+
+                                    <div class="input-group-append">
+                                        <label for="hpSettings-applepay-merchant-upload-field" class="input-group-text bg-primary text-white" id="hpSettings-applepay-merchant-upload">
+                                            <i class="fas fa-upload"></i>&nbsp; {__('hpApplePayUpload')}
+                                        </label>
+                                    </div>
+                                </div>
+                            </div>
+                        </div>
+                    </div>
+                </div>
+
+                {* Save Button *}
+                <div class="panel panel-default card mb-3">
+                    <div class="card-body">
+                        <div class="panel-body card-body">
+                            <div class="hp-admin-option row mb-2">
+                                <div class="hp-admin-option__title col-xs-12 col-12">
+                                    <button class="btn btn-primary" type="submit" name="saveApplePaySettings" value="1"><i class="fa fa-save"></i>&nbsp; {__('hpSettingsSave')}</button>
+                                </div>
+                            </div>
+                        </div>
+                    </div>
+                </div>
+            </form>
+        </div>
+    </div>
+</div>
\ No newline at end of file
diff --git a/adminmenu/template/keypairs.tpl b/adminmenu/template/keypairs.tpl
new file mode 100644
index 0000000..3b297f7
--- /dev/null
+++ b/adminmenu/template/keypairs.tpl
@@ -0,0 +1,49 @@
+{include file="{$hpAdmin.adminTemplatePath}partials/_header.tpl"}
+
+<div class="hp-admin-content">
+    <div class="table-responsive">
+        <table class="list table table-striped">
+            <thead>
+                <tr>
+                    <th class="tleft">{__('hpSettingsPrivateKeyLabel')}</th>
+                    <th class="tleft">{__('hpSettingsPublicKeyLabel')}</th>
+                    <th class="tleft">{__('hpKeypairIsB2B')}</th>
+                    <th class="tleft">{__('currency')}</th>
+                    <th class="tleft">{__('hpPaymentMethod')}</th>
+                    <th></th>
+                </tr>
+            </thead>
+            <tbody class="hp-keypairs">
+                {include file="./partials/_keypair_list.tpl"}
+            </tbody>
+        </table>
+    </div>
+</div>
+
+<div class="modal fade" tabindex="-1" role="dialog" id="hp-keypair-modal" data-backdrop="true">
+    <div class="modal-dialog modal-dialog-centered modal-lg modal-xl" role="document">
+        <form class="modal-content" action="POST">
+            <div class="modal-header">
+                <h4 class="modal-title">{__('hpKeyPairEdit')}</h4>
+                <button type="button" class="close" data-dismiss="modal"><span aria-hidden="true">&times;</span></button>
+            </div>
+            <div class="modal-body">
+
+            </div>
+            <div class="modal-footer">
+                <button type="submit" class="btn btn-primary">{__('save')}</button>
+                {$jtl_token}
+            </div>
+        </form>
+    </div>
+</div>
+
+<div class="save-wrapper">
+    <div class="row">
+        <div class="ml-auto col-xl-auto">
+            <button id="hp-keypairs-add" class="btn btn-primary btn-block">
+                <i class="far fa-plus"></i> {__('Hinzufügen')}
+            </button>
+        </div>
+    </div>
+</div>
\ No newline at end of file
diff --git a/adminmenu/template/partials/_includes.tpl b/adminmenu/template/partials/_includes.tpl
index d0df63c..7a6736e 100644
--- a/adminmenu/template/partials/_includes.tpl
+++ b/adminmenu/template/partials/_includes.tpl
@@ -9,3 +9,4 @@
 <link rel="stylesheet" href="{$hpAdmin.adminMenuUrl}css/admin.css?v={$hpAdmin.pluginVersion}" type="text/css">
 <script src="{$hpAdmin.adminMenuUrl}js/admin.js?v={$hpAdmin.pluginVersion}" defer="defer"></script>
 <script src="{$hpAdmin.adminMenuUrl}js/ordermanagement.js?v={$hpAdmin.pluginVersion}" defer="defer"></script>
+<script src="{$hpAdmin.adminMenuUrl}js/keypairs.js?v={$hpAdmin.pluginVersion}" defer="defer"></script>
diff --git a/adminmenu/template/partials/_keypair_item.tpl b/adminmenu/template/partials/_keypair_item.tpl
new file mode 100644
index 0000000..3a0be27
--- /dev/null
+++ b/adminmenu/template/partials/_keypair_item.tpl
@@ -0,0 +1,82 @@
+
+<div class="panel-body card-body">
+
+{include file="./_header.tpl"}
+
+    <input type="hidden" name="id" value="{if isset($unzerKeypairs.item)}{$unzerKeypairs.item->getId()}{/if}" />
+
+    {* Private Key *}
+    <div class="hp-admin-option row mb-2">
+        <div class="hp-admin-option__title col-xs-3 col-3">
+            <label for="hpKeypair-privateKey">{__('hpSettingsPrivateKeyLabel')}</label>
+        </div>
+        <div class="hp-admin-option__input col-xs-9 col-9">
+            {* Hash current private key to avoid leaking it *}
+            <input type="password" class="form-control" name="privateKey" id="hpKeypair-privateKey"
+                placeholder="{__('hpSettingsPrivateKeyPlaceholder')}"
+                value="{if isset($unzerKeypairs.item)}{password_hash($unzerKeypairs.item->getPrivateKey(), PASSWORD_BCRYPT)}{/if}"
+                required
+            />
+            <small class="form-text help-block text-muted">{__('hpSettingsPrivateKeyHelp')}</small>
+        </div>
+    </div>
+
+    {* Public Key *}
+    <div class="hp-admin-option row mb-2">
+        <div class="hp-admin-option__title col-xs-3 col-3">
+            <label for="hpKeypair-publicKey">{__('hpSettingsPublicKeyLabel')}</label>
+        </div>
+        <div class="hp-admin-option__input col-xs-9 col-9">
+            <input type="text" class="form-control" name="publicKey" id="hpKeypair-publicKey"
+                placeholder="{__('hpSettingsPublicKeyPlaceholder')}"
+                value="{if isset($unzerKeypairs.item)}{$unzerKeypairs.item->getPublicKey()|escape}{/if}"
+                required
+            />
+            <small class="form-text help-block text-muted">{__('hpSettingsPublicKeyHelp')}</small>
+        </div>
+    </div>
+
+    {* Is B2B *}
+    <div class="hp-admin-option row mb-2">
+        <div class="hp-admin-option__title col-xs-3 col-3">
+            <label for="hpKeypair-isB2B">{__('hpKeypairIsB2B')}</label>
+        </div>
+        <div class="hp-admin-option__input col-xs-9 col-9">
+            <input type="checkbox" class="checkbox" name="isB2B" id="hpKeypair-isB2B" {if isset($unzerKeypairs.item) && $unzerKeypairs.item->isB2B()}checked{/if} />
+            {__('yes')}
+            <small class="form-text help-block text-muted">{__('hpKeypairIsB2BHelp')}</small>
+        </div>
+    </div>
+
+    {* Currency *}
+    <div class="hp-admin-option row mb-2">
+        <div class="hp-admin-option__title col-xs-3 col-3">
+            <label for="hpKeypair-currency">{__('currency')}</label>
+        </div>
+        <div class="hp-admin-option__input col-xs-9 col-9">
+            <select class="form-control" name="currency" id="hpKeypair-currency">
+                {foreach from=$unzerKeypairs.currencies item=item}
+                    <option value="{$item.id}" {if isset($unzerKeypairs.item) && $unzerKeypairs.item->getCurrencyId() == $item.id}selected{/if}>{$item.name}</option>
+                {/foreach}
+            </select>
+            <small class="form-text help-block text-muted">{__('hpKeypairCurrencyHelp')}</small>
+        </div>
+    </div>
+
+    {* Payment Methods *}
+    <div class="hp-admin-option row mb-2">
+        <div class="hp-admin-option__title col-xs-3 col-3">
+            <label for="hpKeypair-payment-methods">{__('hpPaymentMethod')}</label>
+        </div>
+        <div class="hp-admin-option__input col-xs-9 col-9">
+            <select class="form-control" name="paymentMethod" id="hpKeypair-payment-methods">
+                {foreach from=$unzerKeypairs.paymentMethods item=item}
+                    {if $item->getActive()}
+                        <option value="{$item->getMethodID()}" {if isset($unzerKeypairs.item) && $unzerKeypairs.item->getPaymentMethodId() == $item->getMethodID()}selected{/if}>{__($item->getName())}</option>
+                    {/if}
+                {/foreach}
+            </select>
+            <small class="form-text help-block text-muted">{__('hpKeypairPaymentMethodsHelp')}</small>
+        </div>
+    </div>
+</div>
\ No newline at end of file
diff --git a/adminmenu/template/partials/_keypair_list.tpl b/adminmenu/template/partials/_keypair_list.tpl
new file mode 100644
index 0000000..310dda2
--- /dev/null
+++ b/adminmenu/template/partials/_keypair_list.tpl
@@ -0,0 +1,50 @@
+{foreach from=$unzerKeypairs.items item=$item}
+    <tr data-id="{$item->getId()}">
+        <td>
+            {* Hide last 16 chars to prevent misuse from unauthorized users *}
+            {substr($item->getPrivateKey(), 0, -16)}{str_repeat('&bull;', 16)}
+        </td>
+        <td>
+            {$item->getPublicKey()}
+        </td>
+        <td>
+            {if $item->isB2B()}
+                <i class="fal fa-check text-success"></i>
+            {else}
+                <i class="fal fa-times text-danger"></i>
+            {/if}
+        </td>
+        <td>
+            {if isset($unzerKeypairs.currencies[$item->getCurrencyId()])}
+                {$unzerKeypairs.currencies[$item->getCurrencyId()].name}
+            {/if}
+        </td>
+        <td>
+            {if isset($unzerKeypairs.paymentMethods[$item->getPaymentMethodId()])}
+                {__($unzerKeypairs.paymentMethods[$item->getPaymentMethodId()]->getName())}
+            {/if}
+        </td>
+        <td>
+            <form method="POST" class="keypair-action-form">
+                {$jtl_token}
+
+                <button type="button" class="btn btn-xs btn-default" data-edit="true" data-toggle="tooltip" title="{__('edit')}">
+                    <i class="fa fas fa-pen fa-pencil" aria-hidden="true"></i>
+                </button>
+
+                <button type="submit" class="btn btn-xs btn-danger delete-confirm"
+                    data-modal-body="{__('Wollen Sie den Eintrag wirklich löschen?')}"
+                    data-delete="true"
+                    data-toggle="tooltip"
+                    title="{__('delete')}"
+                >
+                    <i class="fa fa-trash" aria-hidden="true"></i>
+                </button>
+            </form>
+        </td>
+    </tr>
+{foreachelse}
+    <tr>
+        <td class="text-center" colspan="6">{__('noData')}</td>
+    </tr>
+{/foreach}
\ No newline at end of file
diff --git a/adminmenu/template/partials/_order_detail.tpl b/adminmenu/template/partials/_order_detail.tpl
index 86bf823..a5cd74e 100644
--- a/adminmenu/template/partials/_order_detail.tpl
+++ b/adminmenu/template/partials/_order_detail.tpl
@@ -1,18 +1,24 @@
 {strip}
     <div class="hp-order-detail-wrapper">
-        <div class="row">
+        {* <div class="row">
             <div class="col-12 col-xs-12">
                 <div class="input-group">
                     <div class="btn-group input-group-btn">
                         {if $hpPortalUrl}
-                            <a class="btn btn-primary" title="{__('hpOpenInPortal')}" href="{$hpPortalUrl}" target="_blank">
-                                {__('hpOpenInPortal')}
-                            </a>
+                            {if $hpPayment->getPaymentType()->getResourceName() === 'paylater-invoice'}
+                                <a class="btn btn-primary" title="{__('hpOpenInPaylaterPortal')}" href="{$hpPortalUrl}" target="_blank">
+                                    {__('hpOpenInPaylaterPortal')}
+                                </a>
+                            {else}
+                                <a class="btn btn-primary" title="{__('hpOpenInPortal')}" href="{$hpPortalUrl}" target="_blank">
+                                    {__('hpOpenInPortal')}
+                                </a>
+                            {/if}
                         {/if}
                     </div>
                 </div>
             </div>
-        </div>
+        </div> *}
 
         <div class="row">
             <div class="col-12 col-md-6 col-xs-12">
@@ -144,8 +150,24 @@
                                         {/if}
                                     </dd>
 
-                                    <dt class="col-5">{__('hpInvoiceNumber')}</dt>
-                                    <dd class="col-7">{$hpPayment->getInvoiceId()}</dd>
+                                    {if $hpPayment->getInvoiceId()}
+                                        <dt class="col-5">{__('hpInvoiceNumber')}</dt>
+                                        <dd class="col-7">
+                                            {$hpPayment->getInvoiceId()}
+                                        </dd>
+                                    {elseif $hpOrderMapping->getInvoiceId()}
+                                        <dt class="col-5">{__('hpInvoiceNumber')}</dt>
+                                        <dd class="col-7">
+                                            {$hpOrderMapping->getInvoiceId()}
+                                        </dd>
+                                    {/if}
+
+                                    {if !empty($hpPayment->getAuthorization()) && !empty($hpPayment->getAuthorization()->getDescriptor())}
+                                        <dt class="col-5">{__('hpPaymentReference')}</dt>
+                                        <dd class="col-7">
+                                            {$hpPayment->getAuthorization()->getDescriptor()}
+                                        </dd>
+                                    {/if}
 
                                     <dt class="col-5">{__('hpPaymentId')}</dt>
                                     <dd class="col-7">{$hpPayment->getId()}</dd>
@@ -154,44 +176,44 @@
                                     <dd class="col-7">
                                         {if $hpPayment->getPaymentType()->getResourceName() == 'card'}
                                             {__('hpPaymentmethodCard')}
-                                        {else if $hpPayment->getPaymentType()->getResourceName() == 'sepa-direct-debit'}
+                                        {elseif $hpPayment->getPaymentType()->getResourceName() == 'sepa-direct-debit'}
                                             {__('hpPaymentmethodSEPA')}
-                                        {else if $hpPayment->getPaymentType()->getResourceName() == 'sepa-direct-debit-guaranteed'}
+                                        {elseif $hpPayment->getPaymentType()->getResourceName() == 'sepa-direct-debit-guaranteed'}
                                             {__('hpPaymentmethodSEPAGuaranteed')}
-                                        {else if $hpPayment->getPaymentType()->getResourceName() == 'sepa-direct-debit-secured'}
+                                        {elseif $hpPayment->getPaymentType()->getResourceName() == 'sepa-direct-debit-secured'}
                                             {__('hpPaymentmethodSEPAGuaranteed')}
-                                        {else if $hpPayment->getPaymentType()->getResourceName() == 'invoice'}
+                                        {elseif $hpPayment->getPaymentType()->getResourceName() == 'invoice'}
                                             {__('hpPaymentmethodInvoice')}
-                                        {else if $hpPayment->getPaymentType()->getResourceName() == 'invoice-guaranteed'}
+                                        {elseif $hpPayment->getPaymentType()->getResourceName() == 'invoice-guaranteed'}
                                             {__('hpPaymentmethodInvoiceGuaranteed')}
-                                        {else if $hpPayment->getPaymentType()->getResourceName() == 'invoice-secured'}
+                                        {elseif $hpPayment->getPaymentType()->getResourceName() == 'invoice-secured'}
                                             {__('hpPaymentmethodInvoiceGuaranteed')}
-                                        {else if $hpPayment->getPaymentType()->getResourceName() == 'invoice-factoring'}
+                                        {elseif $hpPayment->getPaymentType()->getResourceName() == 'invoice-factoring'}
                                             {__('hpPaymentmethodInvoiceFactoring')}
-                                        {else if $hpPayment->getPaymentType()->getResourceName() == 'paypal'}
+                                        {elseif $hpPayment->getPaymentType()->getResourceName() == 'paypal'}
                                             {__('hpPaymentmethodPayPal')}
-                                        {else if $hpPayment->getPaymentType()->getResourceName() == 'sofort'}
+                                        {elseif $hpPayment->getPaymentType()->getResourceName() == 'sofort'}
                                             {__('hpPaymentmethodSOFORT')}
-                                        {else if $hpPayment->getPaymentType()->getResourceName() == 'giropay'}
+                                        {elseif $hpPayment->getPaymentType()->getResourceName() == 'giropay'}
                                             {__('hpPaymentmethodGiropay')}
-                                        {else if $hpPayment->getPaymentType()->getResourceName() == 'prepayment'}
+                                        {elseif $hpPayment->getPaymentType()->getResourceName() == 'prepayment'}
                                             {__('hpPaymentmethodPrepayment')}
-                                        {else if $hpPayment->getPaymentType()->getResourceName() == 'eps'}
+                                        {elseif $hpPayment->getPaymentType()->getResourceName() == 'eps'}
                                             {__('hpPaymentmethodEPS')}
-                                        {else if $hpPayment->getPaymentType()->getResourceName() == 'pis'}
+                                        {elseif $hpPayment->getPaymentType()->getResourceName() == 'pis'}
                                             {__('hpPaymentmethodFlexiPayDirect')}
-                                        {else if $hpPayment->getPaymentType()->getResourceName() == 'alipay'}
+                                        {elseif $hpPayment->getPaymentType()->getResourceName() == 'alipay'}
                                             {__('hpPaymentmethodAlipay')}
-                                        {else if $hpPayment->getPaymentType()->getResourceName() == 'wechatpay'}
+                                        {elseif $hpPayment->getPaymentType()->getResourceName() == 'wechatpay'}
                                             {__('hpPaymentmethodWeChatPay')}
-                                        {else if $hpPayment->getPaymentType()->getResourceName() == 'ideal'}
+                                        {elseif $hpPayment->getPaymentType()->getResourceName() == 'ideal'}
                                             {__('hpPaymentmethodiDEAL')}
-                                        {else if $hpPayment->getPaymentType()->getResourceName() == 'hire-purchase-direct-debit'}
+                                        {elseif $hpPayment->getPaymentType()->getResourceName() == 'hire-purchase-direct-debit'}
                                             {__('hpPaymentmethodHirePurchaseDirectDebit')}
-                                        {else if $hpPayment->getPaymentType()->getResourceName() == 'installment-secured'}
+                                        {elseif $hpPayment->getPaymentType()->getResourceName() == 'installment-secured'}
                                             {__('hpPaymentmethodHirePurchaseDirectDebit')}
                                         {else}
-                                            {$hpPayment->getPaymentType()->getResourceName()}
+                                            {__($hpPayment->getPaymentType()->getResourceName())}
                                         {/if}
 
                                         <em>({$hpPayment->getPaymentType()->getId()})</em>
@@ -210,9 +232,7 @@
                     <div class="card-header panel-heading">
                         <h4 class="panel-title">{__('hpTransactions')}</h4>
                     </div>
-
-                    {if !empty($hpPayment->getCharges())}
-                    {* <div class="table-responsive"> *}
+                    {if !empty($hpPayment->getAuthorization() || !empty($hpPayment->getCharges()))}
                         <table class="list table table-striped">
                             <thead>
                             <tr>
@@ -223,31 +243,55 @@
                             </tr>
                             </thead>
                             <tbody>
-                                {foreach from=$hpPayment->getCharges() item='charge' name='charges'}
-                                    <tr {if !$smarty.foreach.charges.first} style="margin-top:10px;"{/if} class="{if $charge->isError()}danger{elseif $charge->isPending()}warning{else}success{/if}">
-                                        <td>{$charge->getId()}</td>
-                                        <td class="hp-short-id">{$charge->getShortId()}</td>
+                                {if !empty($hpPayment->getAuthorization())}
+                                    <tr style="margin-top:10px;" class="{if $hpPayment->getAuthorization()->isError()}danger{elseif $hpPayment->getAuthorization()->isPending()}warning{else}success{/if}">
+                                        <td>{$hpPayment->getAuthorization()->getId()}</td>
+                                        <td class="hp-short-id">{$hpPayment->getAuthorization()->getShortId()}</td>
                                         <td class="hp-status">
-                                            {if $charge->isPending()}
+                                            {if $hpPayment->getAuthorization()->isPending()}
                                                 {__('hpStatePending')}
-                                            {elseif $charge->isError()}
+                                            {elseif $hpPayment->getAuthorization()->isError()}
                                                 {__('hpStateFailure')}
-                                            {elseif $charge->isSuccess()}
+                                            {elseif $hpPayment->getAuthorization()->isSuccess()}
                                                 {__('hpStateSuccessful')}
                                             {else}
                                                 -
                                             {/if}
 
-                                            {if $charge->getMessage()}
-                                                &nbsp; <i class="fa fas fa fa-info-circle" aria-hidden="true" data-toggle="tooltip" data-placement="top" title="{$charge->getMessage()->getMerchant()}"></i>
+                                            {if $hpPayment->getAuthorization()->getMessage()}
+                                                &nbsp; <i class="fa fas fa fa-info-circle" aria-hidden="true" data-toggle="tooltip" data-placement="top" title="{$hpPayment->getAuthorization()->getMessage()->getMerchant()}"></i>
                                             {/if}
                                         </div>
-                                        <td class="hp-amount">{if isset($charge->getAmount())}{($charge->getAmount())|number_format:2}{else} - {/if}{if isset($charge->getCurrency())} {$charge->getCurrency()}{/if}</td>
+                                        <td class="hp-amount">{if isset($hpPayment->getAuthorization()->getAmount())}{number_format($hpPayment->getAuthorization()->getAmount(), 2)}{else} - {/if}{if isset($hpPayment->getAuthorization()->getCurrency())} {$hpPayment->getAuthorization()->getCurrency()}{/if}</td>
                                     </tr>
-                                {/foreach}
+                                {/if}
+
+                                {if !empty($hpPayment->getCharges())}
+                                    {foreach from=$hpPayment->getCharges() item='charge' name='charges'}
+                                        <tr {if !$smarty.foreach.charges.first} style="margin-top:10px;"{/if} class="{if $charge->isError()}danger{elseif $charge->isPending()}warning{else}success{/if}">
+                                            <td>{$charge->getId()}</td>
+                                            <td class="hp-short-id">{$charge->getShortId()}</td>
+                                            <td class="hp-status">
+                                                {if $charge->isPending()}
+                                                    {__('hpStatePending')}
+                                                {elseif $charge->isError()}
+                                                    {__('hpStateFailure')}
+                                                {elseif $charge->isSuccess()}
+                                                    {__('hpStateSuccessful')}
+                                                {else}
+                                                    -
+                                                {/if}
+
+                                                {if $charge->getMessage()}
+                                                    &nbsp; <i class="fa fas fa fa-info-circle" aria-hidden="true" data-toggle="tooltip" data-placement="top" title="{$charge->getMessage()->getMerchant()}"></i>
+                                                {/if}
+                                            </div>
+                                            <td class="hp-amount">{if isset($charge->getAmount())}{number_format($charge->getAmount(), 2)}{else} - {/if}{if isset($charge->getCurrency())} {$charge->getCurrency()}{/if}</td>
+                                        </tr>
+                                    {/foreach}
+                                {/if}
                             </tbody>
                         </table>
-                    {* </div> *}
                     {else}
                         <div class="card-body panel-body text-center"><em>{__('hpEmptyResult')}</em></div>
                     {/if}
@@ -300,7 +344,7 @@
                 </div>
             {/if}
 
-            {if !empty($hpPayment->getCancellations())}
+            {if !empty($hpCancellations)}
                 <div class="col-12 col-xs-12">
                     <div class="card panel panel-default">
                         <div class="card-header panel-heading">
@@ -319,7 +363,7 @@
                                 </tr>
                                 </thead>
                                 <tbody>
-                                    {foreach from=$hpPayment->getCancellations() item='cancelation' name='cancelations'}
+                                    {foreach from=$hpCancellations item='cancelation' name='cancelations'}
                                         <tr {if !$smarty.foreach.cancelations.first} style="margin-top:10px;"{/if} class="{if $cancelation->isError()}danger{elseif $cancelation->isPending()}warning{else}success{/if}">
                                             <td>{$cancelation->getId()}</td>
                                             <td class="hp-short-id">{$cancelation->getShortId()}</td>
@@ -339,7 +383,7 @@
                                                 {/if}
                                             </div>
                                             <td class="hp-payment-ref">{if isset($cancelation->getPaymentReference())}{$cancelation->getPaymentReference()}{else} - {/if}</td>
-                                            <td class="hp-invoice-id">{if isset($cancelation->getAmount())}{($cancelation->getAmount())|number_format:2}{else} - {/if}</td>
+                                            <td class="hp-invoice-id">{if isset($cancelation->getAmount())}{number_format($cancelation->getAmount(), 2)}{else} - {/if}</td>
                                         </tr>
                                     {/foreach}
                                 </tbody>
diff --git a/adminmenu/template/partials/_order_item.tpl b/adminmenu/template/partials/_order_item.tpl
index 71a5b48..6aa1843 100644
--- a/adminmenu/template/partials/_order_item.tpl
+++ b/adminmenu/template/partials/_order_item.tpl
@@ -1,5 +1,5 @@
 {strip}
-    <tr class="hp-order-item {$bgClass}" data-shop-order-id="{$hpOrder->getId()}">
+    <tr class="hp-order-item" data-shop-order-id="{$hpOrder->getId()}">
         <td class="hp-order-table-column hp-shop-order-number">
             {if $hpOrder->getJtlOrderNumber()}{$hpOrder->getJtlOrderNumber()}{elseif $hpOrder->getId()}{$hpOrder->getId()}{else} - {/if}
         </td>
@@ -24,8 +24,8 @@
                 -
             {/if}
         </td>
-        <td class="hp-order-table-column hp-payment-id">{if $hpOrder->getPaymentId()}{$hpOrder->getPaymentId()}{else} - {/if}</dt>
-        <td class="hp-order-table-column hp-order-status hp-status-{if $hpOrder->getPaymentState()}{$hpOrder->getPaymentState()|mb_strtolower|escape}{else}unknown{/if}">
+        <td class="hp-order-table-column hp-payment-id">{if $hpOrder->getPaymentId()}{$hpOrder->getPaymentId()}{else} - {/if}</td>
+        <td class="hp-order-table-column hp-order-status hp-status-{if $hpOrder->getPaymentState()}{mb_strtolower($hpOrder->getPaymentState())|escape}{else}unknown{/if}">
             {if $hpOrder->getPaymentState()}
                {if $hpOrder->getPaymentState() === \UnzerSDK\Constants\PaymentState::STATE_NAME_PENDING}
                     {__('hpStatePending')}
@@ -50,44 +50,44 @@
             {if $hpOrder->getPaymentTypeName()}
                 {if $hpOrder->getPaymentTypeName() == 'card'}
                     {__('hpPaymentmethodCard')}
-                {else if $hpOrder->getPaymentTypeName() == 'sepa-direct-debit'}
+                {elseif $hpOrder->getPaymentTypeName() == 'sepa-direct-debit'}
                     {__('hpPaymentmethodSEPA')}
-                {else if $hpOrder->getPaymentTypeName() == 'sepa-direct-debit-guaranteed'}
+                {elseif $hpOrder->getPaymentTypeName() == 'sepa-direct-debit-guaranteed'}
                     {__('hpPaymentmethodSEPAGuaranteed')}
-                {else if $hpOrder->getPaymentTypeName() == 'sepa-direct-debit-secured'}
+                {elseif $hpOrder->getPaymentTypeName() == 'sepa-direct-debit-secured'}
                     {__('hpPaymentmethodSEPAGuaranteed')}
-                {else if $hpOrder->getPaymentTypeName() == 'invoice'}
+                {elseif $hpOrder->getPaymentTypeName() == 'invoice'}
                     {__('hpPaymentmethodInvoice')}
-                {else if $hpOrder->getPaymentTypeName() == 'invoice-guaranteed'}
+                {elseif $hpOrder->getPaymentTypeName() == 'invoice-guaranteed'}
                     {__('hpPaymentmethodInvoiceGuaranteed')}
-                {else if $hpOrder->getPaymentTypeName() == 'invoice-secured'}
+                {elseif $hpOrder->getPaymentTypeName() == 'invoice-secured'}
                     {__('hpPaymentmethodInvoiceGuaranteed')}
-                {else if $hpOrder->getPaymentTypeName() == 'invoice-factoring'}
+                {elseif $hpOrder->getPaymentTypeName() == 'invoice-factoring'}
                     {__('hpPaymentmethodInvoiceFactoring')}
-                {else if $hpOrder->getPaymentTypeName() == 'paypal'}
+                {elseif $hpOrder->getPaymentTypeName() == 'paypal'}
                     {__('hpPaymentmethodPayPal')}
-                {else if $hpOrder->getPaymentTypeName() == 'sofort'}
+                {elseif $hpOrder->getPaymentTypeName() == 'sofort'}
                     {__('hpPaymentmethodSOFORT')}
-                {else if $hpOrder->getPaymentTypeName() == 'giropay'}
+                {elseif $hpOrder->getPaymentTypeName() == 'giropay'}
                     {__('hpPaymentmethodGiropay')}
-                {else if $hpOrder->getPaymentTypeName() == 'prepayment'}
+                {elseif $hpOrder->getPaymentTypeName() == 'prepayment'}
                     {__('hpPaymentmethodPrepayment')}
-                {else if $hpOrder->getPaymentTypeName() == 'eps'}
+                {elseif $hpOrder->getPaymentTypeName() == 'eps'}
                     {__('hpPaymentmethodEPS')}
-                {else if $hpOrder->getPaymentTypeName() == 'pis'}
+                {elseif $hpOrder->getPaymentTypeName() == 'pis'}
                     {__('hpPaymentmethodFlexiPayDirect')}
-                {else if $hpOrder->getPaymentTypeName() == 'alipay'}
+                {elseif $hpOrder->getPaymentTypeName() == 'alipay'}
                     {__('hpPaymentmethodAlipay')}
-                {else if $hpOrder->getPaymentTypeName() == 'wechatpay'}
+                {elseif $hpOrder->getPaymentTypeName() == 'wechatpay'}
                     {__('hpPaymentmethodWeChatPay')}
-                {else if $hpOrder->getPaymentTypeName() == 'ideal'}
+                {elseif $hpOrder->getPaymentTypeName() == 'ideal'}
                     {__('hpPaymentmethodiDEAL')}
-                {else if $hpOrder->getPaymentTypeName() == 'hire-purchase-direct-debit'}
+                {elseif $hpOrder->getPaymentTypeName() == 'hire-purchase-direct-debit'}
                     {__('hpPaymentmethodHirePurchaseDirectDebit')}
-                {else if $hpOrder->getPaymentTypeName() == 'installment-secured'}
+                {elseif $hpOrder->getPaymentTypeName() == 'installment-secured'}
                     {__('hpPaymentmethodHirePurchaseDirectDebit')}
                 {else}
-                    {$hpOrder->getPaymentTypeName() }
+                    {__($hpOrder->getPaymentTypeName())}
                 {/if}
             {/if}
 
@@ -95,15 +95,17 @@
                 <em>({$hpOrder->getPaymentTypeId()})</em>
             {/if}
         </td>
-        <td class="hp-order-table-column hp-amount tright">{gibPreisStringLocalized($hpOrder->getOrder()->fGesamtsumme)}</td>
-        <td class="hp-order-table-column hp-date tright">{if isset($hpOrder->getOrder()->dErstellt)}{$hpOrder->getOrder()->dErstellt|strtotime|date_format:"d.m.Y H:i:s"}{else} - {/if}</td>
+        <td class="hp-order-table-column hp-amount tright">
+            {\JTL\Catalog\Product\Preise::getLocalizedPriceString($hpOrder->getOrder()->fGesamtsumme, $hpOrder->getOrder()->Waehrung)}
+        </td>
+        <td class="hp-order-table-column hp-date tright">{if isset($hpOrder->getOrder()->dErstellt)}{strtotime($hpOrder->getOrder()->dErstellt)|date_format:"d.m.Y H:i:s"}{else} - {/if}</td>
         <td class="hp-order-table-column hp-order-actions">
             <div class="input-group">
                 <div class="btn-group input-group-btn">
                     <button type="button" class="btn btn-xs btn-default" title="Details ansehen" onclick="window.hpOrderManagement.getDetails('{$hpOrder->getId()}');"><i class="fa fas fa-pen fa-pencil" aria-hidden="true"></i></button>
-                    {if $hpPortalUrl}
+                    {* {if $hpPortalUrl}
                         <a class="btn btn-xs btn-primary" title="Bestellung im hp-Portal anzeigen" href="{$hpPortalUrl}" target="_blank"><i class="fa fas fa-external-link" aria-hidden="true"></i></a>
-                    {/if}
+                    {/if} *}
                 </div>
             </div>
         </td>
diff --git a/adminmenu/template/settings.tpl b/adminmenu/template/settings.tpl
index ebe0425..fe1befc 100644
--- a/adminmenu/template/settings.tpl
+++ b/adminmenu/template/settings.tpl
@@ -14,12 +14,18 @@
 
                     <div class="panel-body card-body">
                         {* Private Key *}
+                        {* Hide last 16 chars to prevent misuse from unauthorized users *}
                         <div class="hp-admin-option row mb-2">
                             <div class="hp-admin-option__title col-xs-3 col-3">
-                                <label for="hpSettings-privateKey">{__('hpSettingsPrivateKeyLabel')}</label>
+                                <label for="hpSettings-privateKey">
+                                    {__('hpSettingsPrivateKeyLabel')}
+                                    {if isset($hpSettings.config.privateKey)}
+                                        <br/><small>{__('current')}: {substr($hpSettings.config.privateKey, 0, -16)}{str_repeat('&bull;', 16)}</small>
+                                    {/if}
+                                </label>
                             </div>
                             <div class="hp-admin-option__input col-xs-9 col-9">
-                                <input type="text" class="form-control" name="privateKey" id="hpSettings-privateKey" placeholder="{__('hpSettingsPrivateKeyPlaceholder')}" value="{if isset($hpSettings.config.privateKey)}{$hpSettings.config.privateKey}{/if}" />
+                                <input type="password" class="form-control" name="privateKey" id="hpSettings-privateKey" placeholder="{__('hpSettingsPrivateKeyPlaceholder')}" value="{if isset($hpSettings.config.privateKey)}{password_hash($hpSettings.config.privateKey, PASSWORD_BCRYPT)}{/if}" />
                                 <small class="form-text help-block text-muted">{__('hpSettingsPrivateKeyHelp')}</small>
                             </div>
                         </div>
@@ -30,7 +36,7 @@
                                 <label for="hpSettings-publicKey">{__('hpSettingsPublicKeyLabel')}</label>
                             </div>
                             <div class="hp-admin-option__input col-xs-9 col-9">
-                                <input type="text" class="form-control" name="publicKey" id="hpSettings-publicKey" placeholder="{_('hpSettingsPublicKeyPlaceholder')}" value="{if isset($hpSettings.config.publicKey)}{$hpSettings.config.publicKey}{/if}" />
+                                <input type="text" class="form-control" name="publicKey" id="hpSettings-publicKey" placeholder="{__('hpSettingsPublicKeyPlaceholder')}" value="{if isset($hpSettings.config.publicKey)}{$hpSettings.config.publicKey}{/if}" />
                                 <small class="form-text help-block text-muted">{__('hpSettingsPublicKeyHelp')}</small>
                             </div>
                         </div>
@@ -94,6 +100,19 @@
                     </div>
 
                     <div class="panel-body card-body">
+                        {* Add Incming Payments *}
+                        <div class="hp-admin-option row mb-2">
+                            <div class="hp-admin-option__title col-xs-3 col-3">
+                                <label for="hpSettings-addIncomingPayments">{__('hpSettingsAddIncomingPayments')}</label>
+                            </div>
+                            <div class="hp-admin-option__input col-xs-9 col-9">
+                                <input type="checkbox" class="checkbox" name="addIncomingPayments" id="hpSettings-addIncomingPayments" {if !isset($hpSettings.config.addIncomingPayments) || $hpSettings.config.addIncomingPayments}checked{/if} />
+                                {__('hpSettingsActive')}
+                                <small class="form-text help-block text-muted">{__('hpSettingsAddIncomingPaymentsHelp')}</small>
+                            </div>
+                        </div>
+
+
                         {* PQ Selector Submit Button *}
                         <div class="hp-admin-option row mb-2">
                             <div class="hp-admin-option__title col-xs-3 col-3">
@@ -111,7 +130,7 @@
                                 <label for="hpSettings-pqSelectorChangePaymentMethod">{__('hpSettingsPqSelectorChangePaymentMethod')}</label>
                             </div>
                             <div class="hp-admin-option__input col-xs-9 col-9">
-                                <input type="text" class="form-control" name="pqSelectorChangePaymentMethod" id="hpSettings-pqSelectorChangePaymentMethod" placeholder="#order-additional-payment" value="{if isset($hpSettings.config.pqSelectorChangePaymentMethod)}{$hpSettings.config.pqSelectorChangePaymentMethod}{else}#order-additional-payment{/if}" />
+                                <input type="text" class="form-control" name="pqSelectorChangePaymentMethod" id="hpSettings-pqSelectorChangePaymentMethod" placeholder="#order-additional-payment" value="{if isset($hpSettings.config.pqSelectorChangePaymentMethod)}{$hpSettings.config.pqSelectorChangePaymentMethod}{/if}" />
                                 <small class="form-text help-block text-muted">{__('hpSettingsPqSelectorChangePaymentMethodHelp')}</small>
                             </div>
                         </div>
@@ -216,6 +235,34 @@
                                 <small class="form-text help-block text-muted">{__('hpSettingsPqMethodPaymentInformationHelp')}</small>
                             </div>
                         </div>
+
+                        {* PQ Selector Instalment Information *}
+                        <div class="hp-admin-option row mb-2">
+                            <div class="hp-admin-option__title col-xs-3 col-3">
+                                <label for="hpSettings-pqSelectorInstalmentInfo">{__('hpSettingsPqSelectorInstalmentInfo')}</label>
+                            </div>
+                            <div class="hp-admin-option__input col-xs-9 col-9">
+                                <input type="text" class="form-control" name="pqSelectorInstalmentInfo" id="hpSettings-pqSelectorInstalmentInfo" placeholder="#complete-order-button" value="{if isset($hpSettings.config.pqSelectorInstalmentInfo)}{$hpSettings.config.pqSelectorInstalmentInfo}{else}#complete-order-button{/if}" />
+                                <small class="form-text help-block text-muted">{__('hpSettingsPqSelectorInstalmentInfoHelp')}</small>
+                            </div>
+                        </div>
+
+                        {* PQ Method Instalment Information *}
+                        <div class="hp-admin-option row mb-2">
+                            <div class="hp-admin-option__title col-xs-3 col-3">
+                                <label for="hpSettings-pqMethodInstalmentInfo">{__('hpSettingsPqMethodInstalmentInfo')}</label>
+                            </div>
+                            <div class="hp-admin-option__input col-xs-9 col-9">
+                                <select class="form-control" name="pqMethodInstalmentInfo" id="hpSettings-pqMethodInstalmentInfo">
+                                    <option value="append" {if isset($hpSettings.config.pqMethodInstalmentInfo) && $hpSettings.config.pqMethodInstalmentInfo == 'append'}selected{/if}>{__('hpSettingsAppend')}</option>
+                                    <option value="prepend" {if isset($hpSettings.config.pqMethodInstalmentInfo) && $hpSettings.config.pqMethodInstalmentInfo == 'prepend'}selected{/if}>{__('hpSettingsPrepend')}</option>
+                                    <option value="before" {if isset($hpSettings.config.pqMethodInstalmentInfo) && $hpSettings.config.pqMethodInstalmentInfo == 'before'}selected{/if}>{__('hpSettingsBefore')}</option>
+                                    <option value="after" {if isset($hpSettings.config.pqMethodInstalmentInfo) && $hpSettings.config.pqMethodInstalmentInfo == 'after' || !isset($hpSettings.config.pqMethodInstalmentInfo)}selected{/if}>{__('hpSettingsAfter')}</option>
+                                    <option value="replaceWith" {if isset($hpSettings.config.pqMethodInstalmentInfo) && $hpSettings.config.pqMethodInstalmentInfo == 'replaceWith'}selected{/if}>{__('hpSettingsReplace')}</option>
+                                </select>
+                                <small class="form-text help-block text-muted">{__('hpSettingsPqMethodInstalmentInfoHelp')}</small>
+                            </div>
+                        </div>
                     </div>
                 </div>
 
diff --git a/composer.json b/composer.json
index cced485..994921c 100644
--- a/composer.json
+++ b/composer.json
@@ -8,6 +8,7 @@
         }
     ],
     "require": {
-        "unzerdev/php-sdk": "~1.1.0"
+        "unzerdev/php-sdk": "~3.5.0",
+        "phpseclib/phpseclib": "~3.0"
     }
 }
diff --git a/composer.lock b/composer.lock
index 1d1c0e6..d8e7341 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,28 +4,255 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "1bb1d0bc104cc6f166d9deba276ff8ba",
+    "content-hash": "be6ccc8080da00e4b98c05d6f11aeb65",
     "packages": [
+        {
+            "name": "paragonie/constant_time_encoding",
+            "version": "v2.6.3",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/paragonie/constant_time_encoding.git",
+                "reference": "58c3f47f650c94ec05a151692652a868995d2938"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/paragonie/constant_time_encoding/zipball/58c3f47f650c94ec05a151692652a868995d2938",
+                "reference": "58c3f47f650c94ec05a151692652a868995d2938",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7|^8"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^6|^7|^8|^9",
+                "vimeo/psalm": "^1|^2|^3|^4"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "ParagonIE\\ConstantTime\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Paragon Initiative Enterprises",
+                    "email": "security@paragonie.com",
+                    "homepage": "https://paragonie.com",
+                    "role": "Maintainer"
+                },
+                {
+                    "name": "Steve 'Sc00bz' Thomas",
+                    "email": "steve@tobtu.com",
+                    "homepage": "https://www.tobtu.com",
+                    "role": "Original Developer"
+                }
+            ],
+            "description": "Constant-time Implementations of RFC 4648 Encoding (Base-64, Base-32, Base-16)",
+            "keywords": [
+                "base16",
+                "base32",
+                "base32_decode",
+                "base32_encode",
+                "base64",
+                "base64_decode",
+                "base64_encode",
+                "bin2hex",
+                "encoding",
+                "hex",
+                "hex2bin",
+                "rfc4648"
+            ],
+            "support": {
+                "email": "info@paragonie.com",
+                "issues": "https://github.com/paragonie/constant_time_encoding/issues",
+                "source": "https://github.com/paragonie/constant_time_encoding"
+            },
+            "time": "2022-06-14T06:56:20+00:00"
+        },
+        {
+            "name": "paragonie/random_compat",
+            "version": "v9.99.100",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/paragonie/random_compat.git",
+                "reference": "996434e5492cb4c3edcb9168db6fbb1359ef965a"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/paragonie/random_compat/zipball/996434e5492cb4c3edcb9168db6fbb1359ef965a",
+                "reference": "996434e5492cb4c3edcb9168db6fbb1359ef965a",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">= 7"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "4.*|5.*",
+                "vimeo/psalm": "^1"
+            },
+            "suggest": {
+                "ext-libsodium": "Provides a modern crypto API that can be used to generate random bytes."
+            },
+            "type": "library",
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Paragon Initiative Enterprises",
+                    "email": "security@paragonie.com",
+                    "homepage": "https://paragonie.com"
+                }
+            ],
+            "description": "PHP 5.x polyfill for random_bytes() and random_int() from PHP 7",
+            "keywords": [
+                "csprng",
+                "polyfill",
+                "pseudorandom",
+                "random"
+            ],
+            "support": {
+                "email": "info@paragonie.com",
+                "issues": "https://github.com/paragonie/random_compat/issues",
+                "source": "https://github.com/paragonie/random_compat"
+            },
+            "time": "2020-10-15T08:29:30+00:00"
+        },
+        {
+            "name": "phpseclib/phpseclib",
+            "version": "3.0.37",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/phpseclib/phpseclib.git",
+                "reference": "cfa2013d0f68c062055180dd4328cc8b9d1f30b8"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/phpseclib/phpseclib/zipball/cfa2013d0f68c062055180dd4328cc8b9d1f30b8",
+                "reference": "cfa2013d0f68c062055180dd4328cc8b9d1f30b8",
+                "shasum": ""
+            },
+            "require": {
+                "paragonie/constant_time_encoding": "^1|^2",
+                "paragonie/random_compat": "^1.4|^2.0|^9.99.99",
+                "php": ">=5.6.1"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "*"
+            },
+            "suggest": {
+                "ext-dom": "Install the DOM extension to load XML formatted public keys.",
+                "ext-gmp": "Install the GMP (GNU Multiple Precision) extension in order to speed up arbitrary precision integer arithmetic operations.",
+                "ext-libsodium": "SSH2/SFTP can make use of some algorithms provided by the libsodium-php extension.",
+                "ext-mcrypt": "Install the Mcrypt extension in order to speed up a few other cryptographic operations.",
+                "ext-openssl": "Install the OpenSSL extension in order to speed up a wide variety of cryptographic operations."
+            },
+            "type": "library",
+            "autoload": {
+                "files": [
+                    "phpseclib/bootstrap.php"
+                ],
+                "psr-4": {
+                    "phpseclib3\\": "phpseclib/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Jim Wigginton",
+                    "email": "terrafrost@php.net",
+                    "role": "Lead Developer"
+                },
+                {
+                    "name": "Patrick Monnerat",
+                    "email": "pm@datasphere.ch",
+                    "role": "Developer"
+                },
+                {
+                    "name": "Andreas Fischer",
+                    "email": "bantu@phpbb.com",
+                    "role": "Developer"
+                },
+                {
+                    "name": "Hans-Jürgen Petrich",
+                    "email": "petrich@tronic-media.com",
+                    "role": "Developer"
+                },
+                {
+                    "name": "Graham Campbell",
+                    "email": "graham@alt-three.com",
+                    "role": "Developer"
+                }
+            ],
+            "description": "PHP Secure Communications Library - Pure-PHP implementations of RSA, AES, SSH2, SFTP, X.509 etc.",
+            "homepage": "http://phpseclib.sourceforge.net",
+            "keywords": [
+                "BigInteger",
+                "aes",
+                "asn.1",
+                "asn1",
+                "blowfish",
+                "crypto",
+                "cryptography",
+                "encryption",
+                "rsa",
+                "security",
+                "sftp",
+                "signature",
+                "signing",
+                "ssh",
+                "twofish",
+                "x.509",
+                "x509"
+            ],
+            "support": {
+                "issues": "https://github.com/phpseclib/phpseclib/issues",
+                "source": "https://github.com/phpseclib/phpseclib/tree/3.0.37"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/terrafrost",
+                    "type": "github"
+                },
+                {
+                    "url": "https://www.patreon.com/phpseclib",
+                    "type": "patreon"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/phpseclib/phpseclib",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2024-03-03T02:14:58+00:00"
+        },
         {
             "name": "unzerdev/php-sdk",
-            "version": "1.1.4.0",
+            "version": "3.5.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/unzerdev/php-sdk.git",
-                "reference": "e18bf5e598f1f6160d373904b4a4b79758033fd5"
+                "reference": "818cb1fb02ef65278221a95d82663ca11ec459e5"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/unzerdev/php-sdk/zipball/e18bf5e598f1f6160d373904b4a4b79758033fd5",
-                "reference": "e18bf5e598f1f6160d373904b4a4b79758033fd5",
+                "url": "https://api.github.com/repos/unzerdev/php-sdk/zipball/818cb1fb02ef65278221a95d82663ca11ec459e5",
+                "reference": "818cb1fb02ef65278221a95d82663ca11ec459e5",
                 "shasum": ""
             },
             "require": {
                 "ext-json": "*",
-                "php": "~7.1.0|~7.2.0|~7.3.0|~7.4.0|~8.0.0"
+                "php": "~7.4.0|~8.0.0|~8.1.0|~8.2.0|~8.3.0"
             },
             "require-dev": {
-                "friendsofphp/php-cs-fixer": "^2.0",
+                "friendsofphp/php-cs-fixer": "^3.0",
                 "phpunit/phpunit": ">6.5 <10.0"
             },
             "suggest": {
@@ -42,12 +269,12 @@
             "license": [
                 "Apache-2.0"
             ],
-            "description": "This is the php sdk to connect to the Unzer rest api.",
+            "description": "This is the php sdk to connect to the Unzer rest API.",
             "support": {
                 "email": "support@unzer.com",
-                "source": "https://github.com/unzerdev/php-sdk/tree/1.1.4.0"
+                "source": "https://github.com/unzerdev/php-sdk/tree/3.5.0"
             },
-            "time": "2021-08-31T09:58:12+00:00"
+            "time": "2024-02-08T11:12:26+00:00"
         }
     ],
     "packages-dev": [],
@@ -58,5 +285,5 @@
     "prefer-lowest": false,
     "platform": [],
     "platform-dev": [],
-    "plugin-api-version": "2.1.0"
+    "plugin-api-version": "2.3.0"
 }
diff --git a/frontend/css/unzer.min.css b/frontend/css/unzer.min.css
new file mode 100644
index 0000000..29a2e4d
--- /dev/null
+++ b/frontend/css/unzer.min.css
@@ -0,0 +1 @@
+.unzerUI .field{position:relative}.label-slide .form-group:not(.exclude-from-label-slide):not(.checkbox) .unzerUI.form label{position:relative;top:initial;left:initial;font-size:1rem;margin:0 0 .28571429rem;padding:0;transform:none;line-height:30px;pointer-events:all;text-overflow:initial;white-space:normal;overflow:initial;max-width:none}.label-slide .form-group:not(.exclude-from-label-slide):not(.checkbox) .unzerUI.checkbox .box,.label-slide .form-group:not(.exclude-from-label-slide):not(.checkbox) .unzerUI.checkbox label{cursor:pointer;padding-left:2.5em}
diff --git a/frontend/css/unzer.min.css.map b/frontend/css/unzer.min.css.map
new file mode 100644
index 0000000..faa5606
--- /dev/null
+++ b/frontend/css/unzer.min.css.map
@@ -0,0 +1,7 @@
+{
+"version": 3,
+"mappings": "AAEI,eAAO,CACH,QAAQ,CAAE,QAAQ,CAOlB,0FAAM,CACF,QAAQ,CAAE,QAAQ,CAClB,GAAG,CAAE,OAAO,CACZ,IAAI,CAAE,OAAO,CACb,SAAS,CAAE,IAAI,CACf,MAAM,CAAE,gBAAgB,CACxB,OAAO,CAAE,CAAC,CACV,SAAS,CAAE,IAAI,CACf,WAAW,CAAE,IAAI,CACjB,cAAc,CAAE,GAAG,CACnB,aAAa,CAAE,OAAO,CACtB,WAAW,CAAE,MAAM,CACnB,QAAQ,CAAE,OAAO,CACjB,SAAS,CAAE,IAAI,CAKnB,4LAAY,CACR,MAAM,CAAE,OAAO,CACf,YAAY,CAAE,KAAK",
+"sources": ["../src/scss/unzer.scss"],
+"names": [],
+"file": "unzer.min.css"
+}
diff --git a/frontend/js/unzer.js b/frontend/js/unzer.js
new file mode 100644
index 0000000..aacde9d
--- /dev/null
+++ b/frontend/js/unzer.js
@@ -0,0 +1,1321 @@
+(function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
+"use strict";
+
+var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
+
+var _applepay = _interopRequireDefault(require("./payments/applepay"));
+
+var _general = _interopRequireDefault(require("./payments/general"));
+
+var _instalment = _interopRequireDefault(require("./payments/instalment"));
+
+window.HpPayment = _general["default"];
+window.HpInstalment = _instalment["default"];
+window.UnzerApplePay = _applepay["default"];
+
+},{"./payments/applepay":2,"./payments/general":3,"./payments/instalment":4,"@babel/runtime/helpers/interopRequireDefault":10}],2:[function(require,module,exports){
+"use strict";
+
+var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports["default"] = void 0;
+
+var _classCallCheck2 = _interopRequireDefault(require("@babel/runtime/helpers/classCallCheck"));
+
+var _createClass2 = _interopRequireDefault(require("@babel/runtime/helpers/createClass"));
+
+var _errors = _interopRequireDefault(require("../utils/errors"));
+
+var _debugging = _interopRequireDefault(require("../utils/debugging"));
+
+/** @type {ApplePaySnippets} */
+var ApplePaySnippetsDefaults = {
+  NOT_SUPPORTED: "This device does not support Apple Pay!",
+  CANCEL_BY_USER: "Canceled payment process by user!"
+};
+
+var ApplePay = /*#__PURE__*/function () {
+  /**
+   * Similiar to the HeidelpayPayment class but slightly differently
+   * (apple pay works differently, so yeah, custom class it is :D)
+   *
+   * @class
+   * @param {String} pubKey
+   * @param {ApplePayPaymentRequest} applePayPaymentRequest
+   * @param {ApplePaySnippets} snippets
+   * @param {ApplePaySettings} settings
+   */
+  function ApplePay(pubKey, applePayPaymentRequest, snippets, settings) {
+    (0, _classCallCheck2["default"])(this, ApplePay);
+
+    /** @type {ApplePaySettings} */
+    this.settings = settings || {};
+    /** @type {ApplePaySnippets} */
+
+    this.snippets = Object.assign(ApplePaySnippetsDefaults, snippets);
+    var options = {
+      locale: this.settings.locale || 'de-DE'
+    };
+    /** @type {ApplePayPaymentRequest} */
+
+    this.applePayPaymentRequest = applePayPaymentRequest;
+    this.unzerInstance = new unzer(pubKey, options);
+    this.errorHandler = new _errors["default"](this.settings.$errorContainer, this.settings.$errorMessage);
+    this.debugging = new _debugging["default"]($('.unzerUI'));
+    window.UNZER_DEBUG = !!this.unzerInstance._isSandbox || this.unzerInstance.config.hasSandboxKey; // Enable Debugging in sandbox mode
+
+    if (!window.ApplePaySession || !window.ApplePaySession.canMakePayments()) {
+      this.unsupportedDevice();
+      return;
+    }
+    /** @type {HTMLElement} form Form in which the customer enters additional details */
+
+
+    this.form = this.settings.form || document.getElementById('form_payment_extra'); // Register Events
+
+    this.initPaymentType = this.initPaymentType.bind(this); // it's a trick! needed in order to overcome the remove event listener
+
+    this.form.addEventListener('submit', this.initPaymentType);
+    $('.apple-pay-button').on('click', this.initPaymentType.bind(this));
+  }
+  /**
+   * Init the payment type in this case means starting the apple pay session
+   * @param {Event} event
+   */
+
+
+  (0, _createClass2["default"])(ApplePay, [{
+    key: "initPaymentType",
+    value: function initPaymentType(event) {
+      var _this = this;
+
+      event.preventDefault();
+
+      if (!window.ApplePaySession || !window.ApplePaySession.canMakePayments()) {
+        this.unsupportedDevice();
+        return;
+      } // We adhere to Apple Pay version 6 to handle the payment request.
+
+
+      var session = new ApplePaySession(3, this.applePayPaymentRequest);
+      this.debugging.log('[> Init Payment Type]', {
+        paymentRequest: this.applePayPaymentRequest
+      });
+
+      session.onvalidatemerchant = function (event) {
+        _this.merchantValidationCallback(event, session);
+      };
+
+      session.onpaymentauthorized = function (event) {
+        _this.applePayAuthorizedCallback(event, session);
+      };
+
+      session.oncancel = function (event) {
+        _this.debugging.log('[> Cancel]', {
+          event: event
+        });
+
+        _this.errorHandler.show(_this.snippets.CANCEL_BY_USER);
+      };
+
+      session.begin();
+    }
+    /**
+     * Call the merchant validation in the server-side integration (apple_pay_merchantvalidation)
+     * @param {Event} event
+     * @param {ApplePaySession} session
+     */
+
+  }, {
+    key: "merchantValidationCallback",
+    value: function merchantValidationCallback(event, session) {
+      var _this2 = this;
+
+      var validationUrl = JSON.stringify(event.validationURL);
+      this.debugging.log('[> Merchant Validation]', {
+        event: event
+      });
+      $.ajax({
+        'url': $.evo.io().options.ioUrl,
+        'method': 'POST',
+        'dataType': 'json',
+        'data': 'io={"name":"apple_pay_merchantvalidation", "params":[' + validationUrl + ']}'
+      }).done(function (validationResponse) {
+        _this2.debugging.log('[> Merchant Validation Response]', validationResponse);
+
+        try {
+          session.completeMerchantValidation(validationResponse);
+        } catch (e) {
+          alert(e.message);
+        }
+      }).fail(function (error) {
+        _this2.debugging.log('[> Merchant Validation Error]', error);
+
+        _this2.errorHandler.show(JSON.stringify(error.statusText));
+
+        session.abort();
+      });
+    }
+    /**
+     * Create Apple Pay resource with unzer and save the resource id to charge it later.
+     *
+     * We do this here via AJAX instead of the validateAdditional method in the payment method to set the apple pay
+     * session state accordingly.
+     *
+     * @param {Event} event
+     * @param {ApplePaySession} session
+     */
+
+  }, {
+    key: "applePayAuthorizedCallback",
+    value: function applePayAuthorizedCallback(event, session) {
+      // Get payment data from event.
+      // "event.payment" also contains contact information, if they were set via Apple Pay.
+      var self = this;
+      var unzerApplePayInstance = this.unzerInstance.ApplePay();
+      var paymentData = event.payment.token.paymentData;
+      this.debugging.log('[> Payment Authorization]', {
+        unzerApplePayInstance: unzerApplePayInstance,
+        event: event,
+        paymentData: paymentData
+      }); // Create an Unzer instance with your public key
+
+      unzerApplePayInstance.createResource(paymentData).then(function (createdResource) {
+        // Hand over the type ID to your backend.
+        var typeId = JSON.stringify(createdResource.id);
+        $.ajax({
+          'url': $.evo.io().options.ioUrl,
+          'method': 'POST',
+          'dataType': 'json',
+          'data': 'io={"name":"apple_pay_payment_authorized", "params":[' + typeId + ']}'
+        }).done(function (result) {
+          // Handle the transaction respone from backend.
+          self.debugging.log('[> Payment Authorization Response]', {
+            result: result,
+            typeId: typeId
+          });
+          var status = result.transactionStatus;
+
+          if (status === 'success' || status === 'pending') {
+            session.completePayment({
+              status: window.ApplePaySession.STATUS_SUCCESS
+            }); // Append Payment Resource Id
+
+            var hiddenInput = document.createElement('input');
+            hiddenInput.setAttribute('type', 'hidden');
+            hiddenInput.setAttribute('name', 'paymentData[resourceId]');
+            hiddenInput.setAttribute('value', typeId);
+            self.form.appendChild(hiddenInput); // Submitting the form
+
+            self.form.removeEventListener('submit', self.initPaymentType);
+            self.form.submit();
+          } else {
+            self.abortPaymentSession(session);
+          }
+        }).fail(function (error) {
+          self.errorHandler.show(error.statusText);
+          self.abortPaymentSession(session);
+        });
+      })["catch"](function (error) {
+        self.debugging.log('[> Payment Authorization Error]', error);
+        self.errorHandler.show(error.message);
+        self.abortPaymentSession(session);
+      });
+    }
+    /**
+     * Handle Unsupported devices
+     */
+
+  }, {
+    key: "unsupportedDevice",
+    value: function unsupportedDevice() {
+      this.settings.submitButton.disabled = true;
+      this.settings.submitButton.ariaDisabled = true;
+      this.errorHandler.show(this.snippets.NOT_SUPPORTED);
+    }
+    /**
+     * abort current payment session.
+     * @param {ApplePaySession} session
+     */
+
+  }, {
+    key: "abortPaymentSession",
+    value: function abortPaymentSession(session) {
+      this.debugging.log('[> Abort Payment Session]', {
+        status: window.ApplePaySession.STATUS_FAILURE
+      });
+      session.completePayment({
+        status: window.ApplePaySession.STATUS_FAILURE
+      });
+      session.abort();
+    }
+  }]);
+  return ApplePay;
+}();
+
+exports["default"] = ApplePay;
+
+},{"../utils/debugging":5,"../utils/errors":6,"@babel/runtime/helpers/classCallCheck":7,"@babel/runtime/helpers/createClass":8,"@babel/runtime/helpers/interopRequireDefault":10}],3:[function(require,module,exports){
+"use strict";
+
+var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports["default"] = void 0;
+
+var _classCallCheck2 = _interopRequireDefault(require("@babel/runtime/helpers/classCallCheck"));
+
+var _createClass2 = _interopRequireDefault(require("@babel/runtime/helpers/createClass"));
+
+var _defineProperty2 = _interopRequireDefault(require("@babel/runtime/helpers/defineProperty"));
+
+var _errors = _interopRequireDefault(require("../utils/errors"));
+
+var UnzerPayment = /*#__PURE__*/function () {
+  /**
+   * Heidelpay Payment Class
+   *
+   * @param {string} pubKey Public Key
+   * @param {string} type Payment Type
+   * @param {PaymentSettings} settings
+   */
+  function UnzerPayment(pubKey, type, settings) {
+    (0, _classCallCheck2["default"])(this, UnzerPayment);
+
+    /** @type {PaymentSettings} */
+    this.settings = settings || {};
+    var options = {
+      locale: this.settings.locale || 'de-DE'
+    };
+    this.unzerInstance = new unzer(pubKey, options);
+    this.errorHandler = new _errors["default"](this.settings.$errorContainer, this.settings.$errorMessage);
+    /** @type {?string} customerId */
+
+    this.customerId = settings.customerId || null;
+    /** @type {{createCustomer: Function, updateCustomer: Function}|null} customerResource */
+
+    this.customerResource = null;
+    /** @type {{createResource: Function}} paymentType */
+
+    this.paymentType = this.initPaymentType(type);
+    /** @type {HTMLElement} form Form in which the customer enters additional details */
+
+    this.form = this.settings.form || document.getElementById('form_payment_extra'); // Register Events
+
+    this.handleFormSubmit = this.handleFormSubmit.bind(this); // it's a trick! needed in order to overcome the remove event listener
+
+    this.form.addEventListener('submit', this.handleFormSubmit);
+
+    if (this.settings.autoSubmit) {
+      // this.form.dispatchEvent(new Event('submit')); // Causes endless redirects in some browsers like FF, so we call the callback directly...
+      this.handleFormSubmit(new Event('submit'));
+    }
+  }
+  /**
+   * Init Payment Type
+   *
+   * @param {string} type
+   * @returns {object} payment type
+   * @throws Error if there is an unkown payment type
+   */
+
+
+  (0, _createClass2["default"])(UnzerPayment, [{
+    key: "initPaymentType",
+    value: function initPaymentType(type) {
+      switch (type) {
+        case UnzerPayment.PAYMENT_TYPES.CARD:
+          return this.createCard();
+
+        case UnzerPayment.PAYMENT_TYPES.INVOICE:
+          return this.createInvoice();
+
+        case UnzerPayment.PAYMENT_TYPES.INVOICE_GUARANTEED:
+          return this.createInvoiceGuaranteed();
+
+        case UnzerPayment.PAYMENT_TYPES.INVOICE_FACTORING:
+          return this.createInvoiceFactoring();
+
+        case UnzerPayment.PAYMENT_TYPES.SEPA:
+          return this.createSepa();
+
+        case UnzerPayment.PAYMENT_TYPES.SEPA_GUARANTEED:
+          return this.createSepaGuaranteed();
+
+        case UnzerPayment.PAYMENT_TYPES.PAYPAL:
+          return this.createPaypal();
+
+        case UnzerPayment.PAYMENT_TYPES.SOFORT:
+          return this.createSofort();
+
+        case UnzerPayment.PAYMENT_TYPES.GIROPAY:
+          return this.createGiropay();
+
+        case UnzerPayment.PAYMENT_TYPES.PRZELEWY24:
+          return this.createPrzelewy24();
+
+        case UnzerPayment.PAYMENT_TYPES.IDEAL:
+          return this.createIdeal();
+
+        case UnzerPayment.PAYMENT_TYPES.PREPAYMENT:
+          return this.createPrepayment();
+
+        case UnzerPayment.PAYMENT_TYPES.EPS:
+          return this.createEPS();
+
+        case UnzerPayment.PAYMENT_TYPES.FLEXIPAY_DIRECT:
+          return this.createFlexiPayDirect();
+
+        case UnzerPayment.PAYMENT_TYPES.ALIPAY:
+          return this.createAlipay();
+
+        case UnzerPayment.PAYMENT_TYPES.WECHAT_PAY:
+          return this.createWeChatPay();
+
+        case UnzerPayment.PAYMENT_TYPES.HIRE_PURCHASE:
+          return this.createHirePurchase();
+
+        case UnzerPayment.PAYMENT_TYPES.PAYLATER_INVOICE:
+          return this.createPaylaterInvoice();
+
+        case UnzerPayment.PAYMENT_TYPES.BANCONTACT:
+          return this.createBancontact();
+
+        case UnzerPayment.PAYMENT_TYPES.PAYLATER_INSTALLMENT:
+          return this.createPaylaterInstallment();
+
+        case UnzerPayment.PAYMENT_TYPES.PAYLATER_DIRECT_DEBIT:
+          return this.createPaylaterDirectDebit();
+
+        default:
+          throw new Error('Unkown Payment Type: ' + type);
+      }
+    }
+    /**
+     * Handle the form submit
+     *
+     * @param {Event} event Submit Event
+     */
+
+  }, {
+    key: "handleFormSubmit",
+    value: function handleFormSubmit(event) {
+      var self = this;
+      event.preventDefault(); // Creating a Payment resource and (optional) Customer Resource
+
+      var resources = [this.paymentType.createResource()];
+
+      if (this.customerResource) {
+        resources.push(this.customerId ? this.customerResource.updateCustomer() : this.customerResource.createCustomer());
+      }
+
+      Promise.all(resources).then(function (result) {
+        // Append Payment Resource Id
+        var hiddenInput = document.createElement('input');
+        hiddenInput.setAttribute('type', 'hidden');
+        hiddenInput.setAttribute('name', 'paymentData[resourceId]');
+        hiddenInput.setAttribute('value', result[0].id);
+        self.form.appendChild(hiddenInput); // Append Customer Id
+
+        if (result.length >= 2) {
+          var hiddenCstInput = document.createElement('input');
+          hiddenCstInput.setAttribute('type', 'hidden');
+          hiddenCstInput.setAttribute('name', 'paymentData[customerId]');
+          hiddenCstInput.setAttribute('value', result[1].id);
+          self.form.appendChild(hiddenCstInput);
+        } // Submitting the form
+
+
+        self.form.removeEventListener('submit', self.handleFormSubmit);
+        self.form.submit();
+      })["catch"](function (error) {
+        self.errorHandler.show(error.message);
+      });
+    }
+    /**
+     * Handle Paylater Input Validation
+     * @param {Event} event
+     * @param {boolean} isValid
+     * @param {String} paymentMethodName
+     * @param {HTMLElement} continueButton
+     * @returns
+     */
+
+  }, {
+    key: "onPaylaterInputValidation",
+    value: function onPaylaterInputValidation(event, isValid, paymentMethodName, continueButton) {
+      // console.log(paymentMethodName, { event, isValid, continueButton, 's360-valid': continueButton.getAttribute('data-s360-valid') });
+      if (isValid) {
+        // everything is still valid
+        if (continueButton.getAttribute('data-s360-valid') == 'all') {
+          continueButton.removeAttribute('disabled');
+          return;
+        } // Customer is already valid -> everything is valid
+
+
+        if (continueButton.getAttribute('data-s360-valid') == 'customer') {
+          continueButton.setAttribute('data-s360-valid', 'all');
+          continueButton.removeAttribute('disabled');
+          return;
+        } // mark payment method as valid
+
+
+        continueButton.setAttribute('data-s360-valid', paymentMethodName);
+        return;
+      }
+
+      continueButton.setAttribute('disabled', true); // only invalidate if the paymentMethodName was valid before
+
+      if (continueButton.getAttribute('data-s360-valid') == paymentMethodName) {
+        continueButton.setAttribute('data-s360-valid', 0);
+      } else if (continueButton.getAttribute('data-s360-valid') == 'all') {
+        continueButton.setAttribute('data-s360-valid', 'customer');
+      }
+    }
+    /**
+     * Create (or update) customer resource.
+     *
+     * @param {?String} paymentTypeName
+     * @param {?String} multipleValidation
+     * @see https://docs.heidelpay.com/docs/customer-ui-integration
+     * @returns {{createCustomer: Function, updateCustomer: Function}} Customer Resource
+     */
+
+  }, {
+    key: "createCustomer",
+    value: function createCustomer() {
+      var paymentTypeName = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : null;
+      var multipleValidation = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;
+      var Customer = this.settings.isB2B ? this.unzerInstance.B2BCustomer() : this.unzerInstance.Customer();
+      var customerObj = this.settings.customer || {};
+      var continueButton = this.settings.submitButton || document.getElementById("submit-button");
+      var options = {
+        containerId: 'customer',
+        showInfoBox: false,
+        showHeader: false,
+        fields: ['name', 'birthdate']
+      };
+
+      if (paymentTypeName) {
+        options.paymentTypeName = paymentTypeName;
+      }
+
+      Customer.initFormFields(customerObj);
+
+      if (multipleValidation) {
+        continueButton.setAttribute('data-s360-valid', 0);
+        Customer.addEventListener('validate', function (e) {
+          // console.log('customer validate', e, continueButton, continueButton.getAttribute('data-s360-valid'));
+          continueButton.setAttribute('disabled', true);
+
+          if (e.success) {
+            // everything is still valid
+            if (continueButton.getAttribute('data-s360-valid') == 'all') {
+              continueButton.removeAttribute('disabled');
+              return;
+            } // payment method is already valid -> everything is valid
+
+
+            if (continueButton.getAttribute('data-s360-valid') == paymentTypeName) {
+              continueButton.setAttribute('data-s360-valid', 'all');
+              continueButton.removeAttribute('disabled');
+              return;
+            }
+
+            continueButton.setAttribute('data-s360-valid', 'customer');
+            return;
+          } // only invalidate if the customer was valid before
+
+
+          if (continueButton.getAttribute('data-s360-valid') == 'customer') {
+            continueButton.setAttribute('data-s360-valid', 0);
+          } else if (continueButton.getAttribute('data-s360-valid') == 'all') {
+            continueButton.setAttribute('data-s360-valid', paymentTypeName);
+          }
+        });
+      } else {
+        Customer.addEventListener('validate', function (e) {
+          if (e.success) {
+            continueButton.removeAttribute('disabled');
+            return;
+          }
+
+          continueButton.setAttribute('disabled', true);
+        });
+      }
+
+      if (this.settings.isB2B) {
+        options.fields = ['companyInfo']; // options = {containerId: 'customer'};
+      }
+
+      if (this.customerId) {
+        Customer.update(this.customerId, options);
+        return Customer;
+      }
+
+      Customer.create(options);
+      return Customer;
+    }
+    /**
+     * Hide form fields from unzer ui component because they are already filled by the shop
+     * @param {string} paymentMethodName
+     */
+
+  }, {
+    key: "hideFormFields",
+    value: function hideFormFields(paymentMethodName) {
+      var field = $('#customer');
+      field.find('.field').filter('.city, .company, :has(.country), .street, .zip, .firstname, .lastname').hide();
+      field.find('.salutation-customer').hide();
+      field.find('.firstname, .lastname').parent('.fields').hide();
+      field.find('.unzerUI.divider-horizontal:eq(0)').hide();
+      field.find('.unzerUI.message.downArrow').hide();
+
+      if (paymentMethodName) {
+        field.find('.field').filter('.checkbox-billingAddress, .email').hide();
+        field.find('.field').filter('.billing-name, .billing-street, .billing-zip, .billing-city, :has(.billing-country)').hide();
+        field.find('.unzerUI.form>.checkboxLabel').hide();
+        field.find('.unzerUI.form>.salutation-unzer-' + paymentMethodName + '-customer').hide();
+      }
+    }
+    /**
+     * Create Paylayter Installment Payment Type
+     *
+     * @see https://docs.unzer.com/payment-methods/unzer-installment-upl/accept-unzer-installment-ui-component/
+     * @returns {{createResource: Function}}
+     */
+
+  }, {
+    key: "createPaylaterInstallment",
+    value: function createPaylaterInstallment() {
+      var _this = this;
+
+      this.customerResource = this.createCustomer('paylater-installment', true);
+      var continueButton = this.settings.submitButton || document.getElementById("submit-button");
+      var paylaterInstallment = this.unzerInstance.PaylaterInstallment();
+      this.hideFormFields('paylater-installment');
+      paylaterInstallment.create({
+        containerId: 'paylater-installment',
+        amount: this.settings.amount,
+        currency: this.settings.currency,
+        country: this.settings.country
+      });
+      paylaterInstallment.addEventListener('paylaterInstallmentEvent', function (e) {
+        switch (e.currentStep) {
+          case 'plan-list':
+            continueButton.setAttribute('disabled', true);
+            break;
+
+          case 'plan-detail':
+            continueButton.setAttribute('disabled', false);
+            break;
+
+          default:
+            break;
+        }
+
+        var isValid = e.action === 'validate' && e.success;
+
+        _this.onPaylaterInputValidation(e, isValid, 'paylater-installment', continueButton);
+      });
+      return paylaterInstallment;
+    }
+    /**
+     * Create Paylayter Invoice Payment Type
+     *
+     * @see https://docs.unzer.com/payment-methods/unzer-invoice-upl/accept-unzer-invoice-upl-ui-component/
+     * @returns {{createResource: Function}}
+     */
+
+  }, {
+    key: "createPaylaterInvoice",
+    value: function createPaylaterInvoice() {
+      var _this2 = this;
+
+      this.customerResource = this.createCustomer('paylater-invoice', true);
+      var continueButton = this.settings.submitButton || document.getElementById("submit-button");
+      var paylaterInvoice = this.unzerInstance.PaylaterInvoice();
+      this.hideFormFields('paylater-invoice');
+      paylaterInvoice.create({
+        containerId: 'paylater-invoice',
+        customerType: this.settings.isB2B ? 'B2B' : 'B2C'
+      });
+      paylaterInvoice.addEventListener('change', function (e) {
+        return _this2.onPaylaterInputValidation(e, e.success, 'paylater-invoice', continueButton);
+      });
+      return paylaterInvoice;
+    }
+    /**
+     * Create Paylayter Invoice Payment Type
+     *
+     * @see https://docs.unzer.com/payment-methods/direct-debit-secured/accept-direct-debit-secured-ui-component/
+     * @returns {{createResource: Function}}
+     */
+
+  }, {
+    key: "createPaylaterDirectDebit",
+    value: function createPaylaterDirectDebit() {
+      var _this3 = this;
+
+      this.customerResource = this.createCustomer('paylater-direct-debit', true);
+      var continueButton = this.settings.submitButton || document.getElementById("submit-button");
+      var paylaterDirectDebit = this.unzerInstance.PaylaterDirectDebit();
+      this.hideFormFields('paylater-direct-debit');
+      paylaterDirectDebit.create('paylater-direct-debit', {
+        containerId: 'paylater-direct-debit',
+        customerType: this.settings.isB2B ? 'B2B' : 'B2C'
+      });
+      paylaterDirectDebit.addEventListener('change', function (e) {
+        return _this3.onPaylaterInputValidation(e, e.success, 'paylater-direct-debit', continueButton);
+      });
+      return paylaterDirectDebit;
+    }
+    /**
+     * Create Bancontact Payment Type
+     *
+     * @see https://docs.unzer.com/payment-methods/bancontact/accept-bancontact-ui-component/
+     * @returns {{createResource: Function}}
+     */
+
+  }, {
+    key: "createBancontact",
+    value: function createBancontact() {
+      var bancontact = this.unzerInstance.Bancontact();
+      var styling = {
+        fontSize: null,
+        fontColor: null,
+        fontFamily: null
+      };
+
+      if (this.settings.styling) {
+        styling.fontColor = this.settings.styling.fontColor || null;
+        styling.fontSize = this.settings.styling.fontSize || null;
+        styling.fontFamily = this.settings.styling.fontFamily || null;
+      }
+
+      bancontact.create('holder', {
+        containerId: 'bancontact-holder',
+        fontSize: styling.fontSize,
+        fontColor: styling.fontColor,
+        fontFamily: styling.fontFamily
+      });
+      return bancontact;
+    }
+    /**
+     * Create a new Card Payment Type.
+     *
+     * @see https://docs.heidelpay.com/docs/credit-card-ui-integration
+     * @returns {{createResource: Function}} Card Payment Type
+     */
+
+  }, {
+    key: "createCard",
+    value: function createCard() {
+      var Card = this.unzerInstance.Card();
+      var styling = {
+        fontSize: null,
+        fontColor: null,
+        fontFamily: null
+      };
+
+      if (this.settings.styling) {
+        styling.fontColor = this.settings.styling.fontColor || null;
+        styling.fontSize = this.settings.styling.fontSize || null;
+        styling.fontFamily = this.settings.styling.fontFamily || null;
+      }
+
+      Card.create('number', {
+        containerId: 'card-element-id-number',
+        onlyIframe: false,
+        fontSize: styling.fontSize,
+        fontColor: styling.fontColor,
+        fontFamily: styling.fontFamily
+      });
+      Card.create('expiry', {
+        containerId: 'card-element-id-expiry',
+        onlyIframe: false,
+        fontSize: styling.fontSize,
+        fontColor: styling.fontColor,
+        fontFamily: styling.fontFamily
+      });
+      Card.create('cvc', {
+        containerId: 'card-element-id-cvc',
+        onlyIframe: false,
+        fontSize: styling.fontSize,
+        fontColor: styling.fontColor // fontFamily: styling.fontFamily // messes with hidden font in firefox
+
+      }); // Enable pay button initially
+
+      var self = this;
+      var formFieldValid = {};
+      /** @type {HTMLElement} continueButton */
+
+      var continueButton = self.settings.submitButton || document.getElementById("submit-button");
+      continueButton.setAttribute('disabled', true);
+
+      var eventHandlerCardInput = function eventHandlerCardInput(e) {
+        if (e.success) {
+          formFieldValid[e.type] = true;
+          self.errorHandler.hide();
+        }
+
+        if (e.error) {
+          formFieldValid[e.type] = false;
+          self.errorHandler.show(e.error);
+        }
+
+        if (formFieldValid.number && formFieldValid.expiry && formFieldValid.cvc) {
+          continueButton.removeAttribute('disabled');
+          return;
+        }
+
+        continueButton.setAttribute('disabled', true);
+      };
+
+      Card.addEventListener('change', eventHandlerCardInput);
+      return Card;
+    }
+    /**
+     * Create a new Invoice Payment Type.
+     *
+     * @see https://docs.heidelpay.com/docs/invoice-ui-integration
+     * @returns {{createResource: Function}} Invoice Payment Type
+     */
+
+  }, {
+    key: "createInvoice",
+    value: function createInvoice() {
+      return this.unzerInstance.Invoice();
+    }
+    /**
+     * Create a new Invoice Guaranteed Payment Type.
+     *
+     * @see https://docs.heidelpay.com/docs/invoice-ui-integration
+     * @returns {{createResource: Function}} Invoice Payment Type
+     */
+
+  }, {
+    key: "createInvoiceGuaranteed",
+    value: function createInvoiceGuaranteed() {
+      this.customerResource = this.createCustomer();
+      return this.unzerInstance.InvoiceSecured();
+    }
+    /**
+     * Create a new Invoice Factoring Payment Type.
+     *
+     * @see https://docs.heidelpay.com/docs/invoice-ui-integration
+     * @returns {{createResource: Function}} Invoice Payment Type
+     */
+
+  }, {
+    key: "createInvoiceFactoring",
+    value: function createInvoiceFactoring() {
+      this.customerResource = this.createCustomer();
+      return this.unzerInstance.InvoiceSecured();
+    }
+    /**
+     * Create a new SEPA Direct Debit Payment Type.
+     *
+     * @see https://docs.heidelpay.com/docs/sepa-direct-debit-ui-integration
+     * @returns {{createResource: Function}} SEPA Direct Debit Payment Type
+     */
+
+  }, {
+    key: "createSepa",
+    value: function createSepa() {
+      var _this4 = this;
+
+      var Sepa = this.unzerInstance.SepaDirectDebit();
+      Sepa.create('sepa-direct-debit', {
+        containerId: 'sepa-IBAN'
+      });
+      /** @type {HTMLElement} continueButton */
+
+      var continueButton = this.settings.submitButton || document.getElementById("submit-button");
+      continueButton.setAttribute('disabled', true);
+      Sepa.addEventListener('change', function (e) {
+        if (e.success) {
+          continueButton.removeAttribute('disabled');
+
+          _this4.errorHandler.hide();
+
+          return;
+        }
+
+        continueButton.setAttribute('disabled', true);
+      });
+      return Sepa;
+    }
+    /**
+     * Create a new SEPA Direct Debit (guaranteed) Payment Type.
+     *
+     * @see https://docs.heidelpay.com/docs/sepa-direct-debit-ui-integration
+     * @returns {{createResource: Function}} SEPA Direct Debit (guaranteed) Payment Type
+     */
+
+  }, {
+    key: "createSepaGuaranteed",
+    value: function createSepaGuaranteed() {
+      var _this5 = this;
+
+      var SepaGuaranteed = this.unzerInstance.SepaDirectDebitSecured();
+      SepaGuaranteed.create('sepa-direct-debit-guaranteed', {
+        containerId: 'sepa-guaranteed-IBAN'
+      });
+      /** @type {HTMLElement} continueButton */
+
+      var continueButton = this.settings.submitButton || document.getElementById("submit-button");
+      continueButton.setAttribute('disabled', true);
+      SepaGuaranteed.addEventListener('change', function (e) {
+        if (e.success) {
+          continueButton.removeAttribute('disabled');
+
+          _this5.errorHandler.hide();
+
+          return;
+        }
+
+        continueButton.setAttribute('disabled', true);
+      });
+      this.customerResource = this.createCustomer();
+      return SepaGuaranteed;
+    }
+    /**
+     * Create a new PayPal Payment Type.
+     *
+     * @see https://docs.heidelpay.com/docs/paypal-ui-integration
+     * @returns {{createResource: Function}} Papal Payment Type
+     */
+
+  }, {
+    key: "createPaypal",
+    value: function createPaypal() {
+      var Paypal = this.unzerInstance.Paypal();
+      Paypal.create('email', {
+        containerId: 'paypal-element-email'
+      });
+      return Paypal;
+    }
+    /**
+     * Create a new SOFORT Payment Type.
+     *
+     * @see https://docs.heidelpay.com/docs/redirect-ui-integration#sofort
+     * @returns {{createResource: Function}} Sofort Payment Type
+     */
+
+  }, {
+    key: "createSofort",
+    value: function createSofort() {
+      return this.unzerInstance.Sofort();
+    }
+    /**
+     * Create a new Giropay Payment Type.
+     *
+     * @see https://docs.heidelpay.com/docs/redirect-ui-integration#giropay
+     * @returns {{createResource: Function}} Giropay Payment Type
+     */
+
+  }, {
+    key: "createGiropay",
+    value: function createGiropay() {
+      return this.unzerInstance.Giropay();
+    }
+    /**
+     * Create a new Przelewy24 Payment Type.
+     *
+     * @see https://docs.heidelpay.com/docs/redirect-ui-integration#przelewy24
+     * @returns {{createResource: Function}} Przelewy24 Payment Type
+     */
+
+  }, {
+    key: "createPrzelewy24",
+    value: function createPrzelewy24() {
+      return this.unzerInstance.Przelewy24();
+    }
+    /**
+     * Create a new iDEAL Payment Type.
+     *
+     * @see https://docs.heidelpay.com/docs/ideal-ui-integration
+     * @returns {{createResource: Function}} iDEAL Payment Type
+     */
+
+  }, {
+    key: "createIdeal",
+    value: function createIdeal() {
+      var _this6 = this;
+
+      var Ideal = this.unzerInstance.Ideal();
+      Ideal.create('ideal', {
+        containerId: 'ideal-element'
+      });
+      /** @type {HTMLElement} continueButton */
+
+      var continueButton = this.settings.submitButton || document.getElementById("submit-button");
+      continueButton.setAttribute('disabled', true);
+      Ideal.addEventListener('change', function (e) {
+        if (e.value) {
+          continueButton.removeAttribute('disabled');
+
+          _this6.errorHandler.hide();
+
+          return;
+        }
+
+        continueButton.setAttribute('disabled', true);
+      });
+      return Ideal;
+    }
+    /**
+     * Create a new Prepayment Payment Type.
+     *
+     * @see https://docs.heidelpay.com/docs/prepayment-ui-integration
+     * @returns {{createResource: Function}} Prepayment Payment Type
+     */
+
+  }, {
+    key: "createPrepayment",
+    value: function createPrepayment() {
+      return this.unzerInstance.Prepayment();
+    }
+    /**
+     * Create a new EPS Payment Type.
+     *
+     * @see https://docs.heidelpay.com/docs/eps-ui-integration
+     * @returns {{createResource: Function}} EPS Payment Type
+     */
+
+  }, {
+    key: "createEPS",
+    value: function createEPS() {
+      var EPS = this.unzerInstance.EPS();
+      EPS.create('eps', {
+        containerId: 'eps-element'
+      });
+      return EPS;
+    }
+    /**
+     * Create a new FlexiPay Direct Payment Type.
+     *
+     * @see https://docs.heidelpay.com/docs/redirect-ui-integration#flexipay-direct
+     * @returns {{createResource: Function}} Alipay Payment Type
+     */
+
+  }, {
+    key: "createFlexiPayDirect",
+    value: function createFlexiPayDirect() {
+      return this.unzerInstance.FlexiPayDirect();
+    }
+    /**
+     * Create a new Alipay Payment Type.
+     *
+     * @see https://docs.heidelpay.com/docs/redirect-ui-integration#alipay
+     * @returns {{createResource: Function}} Alipay Payment Type
+     */
+
+  }, {
+    key: "createAlipay",
+    value: function createAlipay() {
+      return this.unzerInstance.Alipay();
+    }
+    /**
+     * Create an new WeChat Pay Payment Type.
+     *
+     * @see https://docs.heidelpay.com/docs/redirect-ui-integration#wechat-pay
+     * @returns {{createResource: Function}} WeChat Pay Payment Type
+     */
+
+  }, {
+    key: "createWeChatPay",
+    value: function createWeChatPay() {
+      return this.unzerInstance.Wechatpay();
+    }
+    /**
+     * Create a new Hire Purchase Payment Type.
+     *
+     * @see https:://docs.heidelpay.com/docs/hire-purchase-ui-integration
+     * @returns {{createResource: Function}} Hire Purchase Payment Type
+     */
+
+  }, {
+    key: "createHirePurchase",
+    value: function createHirePurchase() {
+      var InstallmentSecured = this.unzerInstance.InstallmentSecured();
+      var self = this;
+      this.customerResource = this.createCustomer();
+      /** @type {HTMLElement} continueButton */
+
+      var continueButton = self.settings.submitButton || document.getElementById("submit-button");
+      continueButton.setAttribute('style', 'display: none');
+      continueButton.setAttribute('disabled', true);
+      InstallmentSecured.create({
+        containerId: 'hire-purchase-element',
+        amount: this.settings.amount || null,
+        currency: this.settings.currency || null,
+        effectiveInterest: this.settings.effectiveInterest || null,
+        orderDate: this.settings.orderDate || null
+      }).then(function (data) {// if successful, notify the user that the list of installments was fetched successfully
+        // in case you were using a loading element during the fetching process,
+        // you can remove it inside this callback function
+      })["catch"](function (response) {
+        // sent an error message to the user (fetching installment list failed)
+        var msg = '';
+        console.error(response.message);
+        response.error.details.forEach(function (err) {
+          console.error('API-Error: ' + err.code);
+          msg += err.customerMessage;
+        });
+        self.errorHandler.show(msg);
+      }); // Listen to UI events
+
+      InstallmentSecured.addEventListener('installmentSecuredEvent', function (e) {
+        if (e.action === 'validate') {
+          if (e.success) {
+            continueButton.removeAttribute('disabled');
+            return;
+          }
+
+          continueButton.setAttribute('disabled', true);
+        }
+
+        if (e.action === 'change-step') {
+          if (e.currentSteep === 'plan-list') {
+            continueButton.setAttribute('style', 'display: none');
+            continueButton.setAttribute('disabled', true);
+            return;
+          }
+
+          continueButton.setAttribute('style', 'display: inline-block');
+        }
+      });
+      return InstallmentSecured;
+    }
+  }]);
+  return UnzerPayment;
+}();
+
+exports["default"] = UnzerPayment;
+(0, _defineProperty2["default"])(UnzerPayment, "PAYMENT_TYPES", {
+  ALIPAY: 'Alipay',
+  CARD: 'Card',
+  EPS: 'EPS',
+  FLEXIPAY_DIRECT: 'FlexiPay Direct',
+  HIRE_PURCHASE: 'Hire Purchase',
+  PAYPAL: 'Paypal',
+  INVOICE: 'Invoice',
+  INVOICE_FACTORING: 'Invoice Factoring',
+  INVOICE_GUARANTEED: 'Invoice Guaranteed',
+  SEPA: 'SEPA',
+  SEPA_GUARANTEED: 'SEPA (guaranteed)',
+  SOFORT: 'SOFORT',
+  GIROPAY: 'Giropay',
+  PRZELEWY24: 'Przelewy24',
+  IDEAL: 'iDEAL',
+  PREPAYMENT: 'Prepayment',
+  WECHAT_PAY: 'WeChat Pay',
+  PAYLATER_INVOICE: 'Paylater Invoice',
+  BANCONTACT: 'Bancontact',
+  PAYLATER_INSTALLMENT: 'Paylater Installment',
+  PAYLATER_DIRECT_DEBIT: 'Paylater Direct Debit'
+});
+
+},{"../utils/errors":6,"@babel/runtime/helpers/classCallCheck":7,"@babel/runtime/helpers/createClass":8,"@babel/runtime/helpers/defineProperty":9,"@babel/runtime/helpers/interopRequireDefault":10}],4:[function(require,module,exports){
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports["default"] = void 0;
+
+/**
+ * Heidelpay Installment Modal Window Handler
+ *
+ * @param {string} modalSelector
+ * @param {HTMLElement} btn Submit Trigger
+ * @param {JQuery<HTMLElement>} $form
+ */
+var Installment = function Installment(modalSelector, btn, $form) {
+  var modal = $(modalSelector);
+  btn.addEventListener('click', function () {
+    $form.trigger('submit');
+  });
+  $form.on('submit', function (e) {
+    if (!modal.is(':visible')) {
+      e.preventDefault();
+      modal.modal('show');
+      return false;
+    }
+
+    return true;
+  });
+};
+
+var _default = Installment;
+exports["default"] = _default;
+
+},{}],5:[function(require,module,exports){
+"use strict";
+
+var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports["default"] = void 0;
+
+var _classCallCheck2 = _interopRequireDefault(require("@babel/runtime/helpers/classCallCheck"));
+
+var _createClass2 = _interopRequireDefault(require("@babel/runtime/helpers/createClass"));
+
+var Debugging = /*#__PURE__*/function () {
+  function Debugging($container) {
+    (0, _classCallCheck2["default"])(this, Debugging);
+    this.$container = $container;
+    this.$log = null;
+
+    if (!window.UNZER_DEBUG) {
+      return;
+    }
+
+    this.createLogTemplate();
+  }
+
+  (0, _createClass2["default"])(Debugging, [{
+    key: "log",
+    value: function log(context) {
+      var data = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
+
+      if (!window.UNZER_DEBUG) {
+        return;
+      }
+
+      if (!this.$log) {
+        this.createLogTemplate();
+      }
+
+      this.$log.append('<li><strong>' + context + '</strong><pre>' + JSON.stringify(data, null, '  ') + '</pre></li>');
+    }
+  }, {
+    key: "createLogTemplate",
+    value: function createLogTemplate() {
+      this.$container.append($('<div class="debug-log card card-body bg-light"><ul class="list-unstyled"></ul></div>'));
+      this.$log = this.$container.find('.debug-log > ul');
+    }
+  }]);
+  return Debugging;
+}();
+
+exports["default"] = Debugging;
+
+},{"@babel/runtime/helpers/classCallCheck":7,"@babel/runtime/helpers/createClass":8,"@babel/runtime/helpers/interopRequireDefault":10}],6:[function(require,module,exports){
+"use strict";
+
+var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports["default"] = void 0;
+
+var _classCallCheck2 = _interopRequireDefault(require("@babel/runtime/helpers/classCallCheck"));
+
+var _createClass2 = _interopRequireDefault(require("@babel/runtime/helpers/createClass"));
+
+var ErrorHandler = /*#__PURE__*/function () {
+  /**
+   * @param {JQuery<HTMLElement>|null} $wrapper Wrapper for Container to display error messages in
+   * @param {JQuery<HTMLElement>|null} $holder Container to display error messages in
+   */
+  function ErrorHandler($wrapper, $holder) {
+    (0, _classCallCheck2["default"])(this, ErrorHandler);
+    this.$wrapper = $wrapper || $('#error-container');
+    this.$holder = $holder || this.$wrapper.find('.alert');
+  }
+  /**
+   * Show Error message
+   * @param {String} message
+   */
+
+
+  (0, _createClass2["default"])(ErrorHandler, [{
+    key: "show",
+    value: function show(message) {
+      this.$wrapper.show();
+      this.$holder.html(message);
+    }
+    /**
+     * Hide error message
+     */
+
+  }, {
+    key: "hide",
+    value: function hide() {
+      this.$wrapper.hide();
+      this.$holder.html();
+    }
+  }]);
+  return ErrorHandler;
+}();
+
+exports["default"] = ErrorHandler;
+
+},{"@babel/runtime/helpers/classCallCheck":7,"@babel/runtime/helpers/createClass":8,"@babel/runtime/helpers/interopRequireDefault":10}],7:[function(require,module,exports){
+function _classCallCheck(instance, Constructor) {
+  if (!(instance instanceof Constructor)) {
+    throw new TypeError("Cannot call a class as a function");
+  }
+}
+
+module.exports = _classCallCheck, module.exports.__esModule = true, module.exports["default"] = module.exports;
+},{}],8:[function(require,module,exports){
+function _defineProperties(target, props) {
+  for (var i = 0; i < props.length; i++) {
+    var descriptor = props[i];
+    descriptor.enumerable = descriptor.enumerable || false;
+    descriptor.configurable = true;
+    if ("value" in descriptor) descriptor.writable = true;
+    Object.defineProperty(target, descriptor.key, descriptor);
+  }
+}
+
+function _createClass(Constructor, protoProps, staticProps) {
+  if (protoProps) _defineProperties(Constructor.prototype, protoProps);
+  if (staticProps) _defineProperties(Constructor, staticProps);
+  Object.defineProperty(Constructor, "prototype", {
+    writable: false
+  });
+  return Constructor;
+}
+
+module.exports = _createClass, module.exports.__esModule = true, module.exports["default"] = module.exports;
+},{}],9:[function(require,module,exports){
+function _defineProperty(obj, key, value) {
+  if (key in obj) {
+    Object.defineProperty(obj, key, {
+      value: value,
+      enumerable: true,
+      configurable: true,
+      writable: true
+    });
+  } else {
+    obj[key] = value;
+  }
+
+  return obj;
+}
+
+module.exports = _defineProperty, module.exports.__esModule = true, module.exports["default"] = module.exports;
+},{}],10:[function(require,module,exports){
+function _interopRequireDefault(obj) {
+  return obj && obj.__esModule ? obj : {
+    "default": obj
+  };
+}
+
+module.exports = _interopRequireDefault, module.exports.__esModule = true, module.exports["default"] = module.exports;
+},{}]},{},[1])
+//# sourceMappingURL=unzer.js.map
diff --git a/frontend/js/unzer.js.map b/frontend/js/unzer.js.map
new file mode 100644
index 0000000..9f908d8
--- /dev/null
+++ b/frontend/js/unzer.js.map
@@ -0,0 +1,33 @@
+{
+    "version": 3,
+    "sources": [
+        "node_modules/browser-pack/_prelude.js",
+        "frontend/src/js/app.js",
+        "frontend/src/js/payments/applepay.js",
+        "frontend/src/js/payments/general.js",
+        "frontend/src/js/payments/instalment.js",
+        "frontend/src/js/utils/debugging.js",
+        "frontend/src/js/utils/errors.js",
+        "node_modules/@babel/runtime/helpers/classCallCheck.js",
+        "node_modules/@babel/runtime/helpers/createClass.js",
+        "node_modules/@babel/runtime/helpers/defineProperty.js",
+        "node_modules/@babel/runtime/helpers/interopRequireDefault.js"
+    ],
+    "names": [],
+    "mappings": 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+    "file": "unzer.js",
+    "sourceRoot": "",
+    "sourcesContent": [
+        "(function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c=\"function\"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error(\"Cannot find module '\"+i+\"'\");throw a.code=\"MODULE_NOT_FOUND\",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u=\"function\"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()",
+        "import ApplePay from './payments/applepay';\nimport UnzerPayment from \"./payments/general\";\nimport Installment from \"./payments/instalment\";\n\nwindow.HpPayment = UnzerPayment;\nwindow.HpInstalment = Installment;\nwindow.UnzerApplePay = ApplePay;\n",
+        "import ErrorHandler from \"../utils/errors\";\nimport Debugging from \"../utils/debugging\";\n\n/** @type {ApplePaySnippets} */\nconst ApplePaySnippetsDefaults = {\n    NOT_SUPPORTED: \"This device does not support Apple Pay!\",\n    CANCEL_BY_USER: \"Canceled payment process by user!\"\n};\n\nexport default class ApplePay {\n    /**\n     * Similiar to the HeidelpayPayment class but slightly differently\n     * (apple pay works differently, so yeah, custom class it is :D)\n     *\n     * @class\n     * @param {String} pubKey\n     * @param {ApplePayPaymentRequest} applePayPaymentRequest\n     * @param {ApplePaySnippets} snippets\n     * @param {ApplePaySettings} settings\n     */\n    constructor(pubKey, applePayPaymentRequest, snippets, settings) {\n        /** @type {ApplePaySettings} */\n        this.settings = settings || {};\n\n        /** @type {ApplePaySnippets} */\n        this.snippets = Object.assign(ApplePaySnippetsDefaults, snippets);\n\n        var options = {\n            locale: this.settings.locale || 'de-DE'\n        };\n\n        /** @type {ApplePayPaymentRequest} */\n        this.applePayPaymentRequest = applePayPaymentRequest;\n        this.unzerInstance = new unzer(pubKey, options);\n        this.errorHandler = new ErrorHandler(this.settings.$errorContainer, this.settings.$errorMessage);\n        this.debugging = new Debugging($('.unzerUI'));\n        window.UNZER_DEBUG = !!this.unzerInstance._isSandbox || this.unzerInstance.config.hasSandboxKey; // Enable Debugging in sandbox mode\n\n        if (!window.ApplePaySession|| !window.ApplePaySession.canMakePayments()) {\n            this.unsupportedDevice();\n            return;\n        }\n\n        /** @type {HTMLElement} form Form in which the customer enters additional details */\n        this.form = this.settings.form || document.getElementById('form_payment_extra');\n\n        // Register Events\n        this.initPaymentType = this.initPaymentType.bind(this); // it's a trick! needed in order to overcome the remove event listener\n        this.form.addEventListener('submit', this.initPaymentType);\n        $('.apple-pay-button').on('click', this.initPaymentType.bind(this));\n    }\n\n    /**\n     * Init the payment type in this case means starting the apple pay session\n     * @param {Event} event\n     */\n    initPaymentType(event) {\n        event.preventDefault();\n\n        if (!window.ApplePaySession || !window.ApplePaySession.canMakePayments()) {\n            this.unsupportedDevice();\n            return;\n        }\n\n        // We adhere to Apple Pay version 6 to handle the payment request.\n        const session = new ApplePaySession(3, this.applePayPaymentRequest);\n        this.debugging.log('[> Init Payment Type]', {paymentRequest: this.applePayPaymentRequest});\n\n        session.onvalidatemerchant = (event) => {\n            this.merchantValidationCallback(event, session);\n        };\n\n        session.onpaymentauthorized = (event) => {\n            this.applePayAuthorizedCallback(event, session);\n        };\n\n        session.oncancel = (event) => {\n            this.debugging.log('[> Cancel]', {event});\n            this.errorHandler.show(this.snippets.CANCEL_BY_USER);\n        };\n\n        session.begin();\n    }\n\n    /**\n     * Call the merchant validation in the server-side integration (apple_pay_merchantvalidation)\n     * @param {Event} event\n     * @param {ApplePaySession} session\n     */\n    merchantValidationCallback(event, session) {\n        var validationUrl = JSON.stringify(event.validationURL);\n\n        this.debugging.log('[> Merchant Validation]', {event});\n\n        $.ajax({\n            'url': $.evo.io().options.ioUrl,\n            'method': 'POST',\n            'dataType': 'json',\n            'data': 'io={\"name\":\"apple_pay_merchantvalidation\", \"params\":[' + validationUrl + ']}',\n        }).done((validationResponse) => {\n            this.debugging.log('[> Merchant Validation Response]', validationResponse);\n\n            try {\n                session.completeMerchantValidation(validationResponse);\n            } catch (e) {\n                alert(e.message);\n            }\n        })\n        .fail((error) => {\n            this.debugging.log('[> Merchant Validation Error]', error);\n            this.errorHandler.show(JSON.stringify(error.statusText));\n            session.abort();\n        });\n    }\n\n    /**\n     * Create Apple Pay resource with unzer and save the resource id to charge it later.\n     *\n     * We do this here via AJAX instead of the validateAdditional method in the payment method to set the apple pay\n     * session state accordingly.\n     *\n     * @param {Event} event\n     * @param {ApplePaySession} session\n     */\n    applePayAuthorizedCallback(event, session) {\n        // Get payment data from event.\n        // \"event.payment\" also contains contact information, if they were set via Apple Pay.\n        var self = this;\n        var unzerApplePayInstance = this.unzerInstance.ApplePay();\n        var paymentData = event.payment.token.paymentData;\n\n        this.debugging.log('[> Payment Authorization]', {unzerApplePayInstance, event, paymentData});\n\n        // Create an Unzer instance with your public key\n        unzerApplePayInstance.createResource(paymentData)\n            .then(function (createdResource) {\n                // Hand over the type ID to your backend.\n                var typeId = JSON.stringify(createdResource.id);\n                $.ajax({\n                    'url': $.evo.io().options.ioUrl,\n                    'method': 'POST',\n                    'dataType': 'json',\n                    'data': 'io={\"name\":\"apple_pay_payment_authorized\", \"params\":[' + typeId + ']}',\n                }).done(function (result) {\n                    // Handle the transaction respone from backend.\n                    self.debugging.log('[> Payment Authorization Response]', {result, typeId});\n                    var status = result.transactionStatus;\n                    if (status === 'success' || status === 'pending') {\n                        session.completePayment({ status: window.ApplePaySession.STATUS_SUCCESS });\n\n                        // Append Payment Resource Id\n                        const hiddenInput = document.createElement('input');\n                        hiddenInput.setAttribute('type', 'hidden');\n                        hiddenInput.setAttribute('name', 'paymentData[resourceId]');\n                        hiddenInput.setAttribute('value', typeId);\n                        self.form.appendChild(hiddenInput);\n\n                        // Submitting the form\n                        self.form.removeEventListener('submit', self.initPaymentType);\n                        self.form.submit();\n                    } else {\n                        self.abortPaymentSession(session);\n                    }\n                }).fail(function (error) {\n                    self.errorHandler.show(error.statusText);\n                    self.abortPaymentSession(session);\n                });\n            })\n            .catch(function (error) {\n                self.debugging.log('[> Payment Authorization Error]', error);\n                self.errorHandler.show(error.message);\n                self.abortPaymentSession(session);\n            });\n    }\n\n    /**\n     * Handle Unsupported devices\n     */\n    unsupportedDevice() {\n        this.settings.submitButton.disabled = true;\n        this.settings.submitButton.ariaDisabled = true;\n        this.errorHandler.show(this.snippets.NOT_SUPPORTED);\n    }\n\n    /**\n     * abort current payment session.\n     * @param {ApplePaySession} session\n     */\n    abortPaymentSession(session) {\n        this.debugging.log('[> Abort Payment Session]', { status: window.ApplePaySession.STATUS_FAILURE });\n        session.completePayment({ status: window.ApplePaySession.STATUS_FAILURE });\n        session.abort();\n    }\n}\n",
+        "import ErrorHandler from \"../utils/errors\";\n\nexport default class UnzerPayment {\n    static PAYMENT_TYPES = {\n        ALIPAY: 'Alipay',\n        CARD: 'Card',\n        EPS: 'EPS',\n        FLEXIPAY_DIRECT: 'FlexiPay Direct',\n        HIRE_PURCHASE: 'Hire Purchase',\n        PAYPAL: 'Paypal',\n        INVOICE: 'Invoice',\n        INVOICE_FACTORING: 'Invoice Factoring',\n        INVOICE_GUARANTEED: 'Invoice Guaranteed',\n        SEPA: 'SEPA',\n        SEPA_GUARANTEED: 'SEPA (guaranteed)',\n        SOFORT: 'SOFORT',\n        GIROPAY: 'Giropay',\n        PRZELEWY24: 'Przelewy24',\n        IDEAL: 'iDEAL',\n        PREPAYMENT: 'Prepayment',\n        WECHAT_PAY: 'WeChat Pay',\n        PAYLATER_INVOICE: 'Paylater Invoice',\n        BANCONTACT: 'Bancontact',\n        PAYLATER_INSTALLMENT: 'Paylater Installment',\n        PAYLATER_DIRECT_DEBIT: 'Paylater Direct Debit',\n    };\n\n    /**\n     * Heidelpay Payment Class\n     *\n     * @param {string} pubKey Public Key\n     * @param {string} type Payment Type\n     * @param {PaymentSettings} settings\n     */\n    constructor(pubKey, type, settings) {\n        /** @type {PaymentSettings} */\n        this.settings = settings || {};\n\n        var options = {\n            locale: this.settings.locale || 'de-DE'\n        };\n\n        this.unzerInstance = new unzer(pubKey, options);\n        this.errorHandler = new ErrorHandler(this.settings.$errorContainer, this.settings.$errorMessage);\n\n        /** @type {?string} customerId */\n        this.customerId = settings.customerId || null;\n\n        /** @type {{createCustomer: Function, updateCustomer: Function}|null} customerResource */\n        this.customerResource = null;\n\n        /** @type {{createResource: Function}} paymentType */\n        this.paymentType = this.initPaymentType(type);\n\n        /** @type {HTMLElement} form Form in which the customer enters additional details */\n        this.form = this.settings.form || document.getElementById('form_payment_extra');\n\n        // Register Events\n        this.handleFormSubmit = this.handleFormSubmit.bind(this); // it's a trick! needed in order to overcome the remove event listener\n        this.form.addEventListener('submit', this.handleFormSubmit);\n\n        if (this.settings.autoSubmit) {\n            // this.form.dispatchEvent(new Event('submit')); // Causes endless redirects in some browsers like FF, so we call the callback directly...\n            this.handleFormSubmit(new Event('submit'));\n        }\n    }\n\n    /**\n     * Init Payment Type\n     *\n     * @param {string} type\n     * @returns {object} payment type\n     * @throws Error if there is an unkown payment type\n     */\n    initPaymentType(type) {\n        switch (type) {\n            case UnzerPayment.PAYMENT_TYPES.CARD:\n                return this.createCard();\n\n            case UnzerPayment.PAYMENT_TYPES.INVOICE:\n                return this.createInvoice();\n\n            case UnzerPayment.PAYMENT_TYPES.INVOICE_GUARANTEED:\n                return this.createInvoiceGuaranteed();\n\n            case UnzerPayment.PAYMENT_TYPES.INVOICE_FACTORING:\n                return this.createInvoiceFactoring();\n\n            case UnzerPayment.PAYMENT_TYPES.SEPA:\n                return this.createSepa();\n\n            case UnzerPayment.PAYMENT_TYPES.SEPA_GUARANTEED:\n                return this.createSepaGuaranteed();\n\n            case UnzerPayment.PAYMENT_TYPES.PAYPAL:\n                return this.createPaypal();\n\n            case UnzerPayment.PAYMENT_TYPES.SOFORT:\n                return this.createSofort();\n\n            case UnzerPayment.PAYMENT_TYPES.GIROPAY:\n                return this.createGiropay();\n\n            case UnzerPayment.PAYMENT_TYPES.PRZELEWY24:\n                return this.createPrzelewy24();\n\n            case UnzerPayment.PAYMENT_TYPES.IDEAL:\n                return this.createIdeal();\n\n            case UnzerPayment.PAYMENT_TYPES.PREPAYMENT:\n                return this.createPrepayment();\n\n            case UnzerPayment.PAYMENT_TYPES.EPS:\n                return this.createEPS();\n\n            case UnzerPayment.PAYMENT_TYPES.FLEXIPAY_DIRECT:\n                return this.createFlexiPayDirect();\n\n            case UnzerPayment.PAYMENT_TYPES.ALIPAY:\n                return this.createAlipay();\n\n            case UnzerPayment.PAYMENT_TYPES.WECHAT_PAY:\n                return this.createWeChatPay();\n\n            case UnzerPayment.PAYMENT_TYPES.HIRE_PURCHASE:\n                return this.createHirePurchase();\n\n            case UnzerPayment.PAYMENT_TYPES.PAYLATER_INVOICE:\n                return this.createPaylaterInvoice();\n\n            case UnzerPayment.PAYMENT_TYPES.BANCONTACT:\n                return this.createBancontact();\n\n            case UnzerPayment.PAYMENT_TYPES.PAYLATER_INSTALLMENT:\n                return this.createPaylaterInstallment();\n\n            case UnzerPayment.PAYMENT_TYPES.PAYLATER_DIRECT_DEBIT:\n                return this.createPaylaterDirectDebit();\n\n            default:\n                throw new Error('Unkown Payment Type: ' + type);\n        }\n    }\n\n    /**\n     * Handle the form submit\n     *\n     * @param {Event} event Submit Event\n     */\n    handleFormSubmit(event) {\n        var self = this;\n        event.preventDefault();\n\n        // Creating a Payment resource and (optional) Customer Resource\n        var resources = [this.paymentType.createResource()];\n\n        if (this.customerResource) {\n            resources.push(this.customerId ? this.customerResource.updateCustomer() : this.customerResource.createCustomer());\n        }\n\n        Promise.all(resources).then(function (result) {\n            // Append Payment Resource Id\n            var hiddenInput = document.createElement('input');\n            hiddenInput.setAttribute('type', 'hidden');\n            hiddenInput.setAttribute('name', 'paymentData[resourceId]');\n            hiddenInput.setAttribute('value', result[0].id);\n            self.form.appendChild(hiddenInput);\n\n            // Append Customer Id\n            if (result.length >= 2) {\n                var hiddenCstInput = document.createElement('input');\n                hiddenCstInput.setAttribute('type', 'hidden');\n                hiddenCstInput.setAttribute('name', 'paymentData[customerId]');\n                hiddenCstInput.setAttribute('value', result[1].id);\n                self.form.appendChild(hiddenCstInput);\n            }\n\n            // Submitting the form\n            self.form.removeEventListener('submit', self.handleFormSubmit);\n            self.form.submit();\n        })\n        .catch(function (error) {\n            self.errorHandler.show(error.message);\n        });\n    }\n\n    /**\n     * Handle Paylater Input Validation\n     * @param {Event} event\n     * @param {boolean} isValid\n     * @param {String} paymentMethodName\n     * @param {HTMLElement} continueButton\n     * @returns\n     */\n    onPaylaterInputValidation(event, isValid, paymentMethodName, continueButton) {\n        // console.log(paymentMethodName, { event, isValid, continueButton, 's360-valid': continueButton.getAttribute('data-s360-valid') });\n\n        if (isValid) {\n            // everything is still valid\n            if (continueButton.getAttribute('data-s360-valid') == 'all') {\n                continueButton.removeAttribute('disabled');\n                return;\n            }\n\n            // Customer is already valid -> everything is valid\n            if (continueButton.getAttribute('data-s360-valid') == 'customer') {\n                continueButton.setAttribute('data-s360-valid', 'all');\n                continueButton.removeAttribute('disabled');\n                return;\n            }\n\n            // mark payment method as valid\n            continueButton.setAttribute('data-s360-valid', paymentMethodName);\n            return;\n        }\n\n        continueButton.setAttribute('disabled', true);\n\n        // only invalidate if the paymentMethodName was valid before\n        if (continueButton.getAttribute('data-s360-valid') == paymentMethodName) {\n            continueButton.setAttribute('data-s360-valid', 0);\n        } else if (continueButton.getAttribute('data-s360-valid') == 'all') {\n            continueButton.setAttribute('data-s360-valid', 'customer');\n        }\n    }\n\n    /**\n     * Create (or update) customer resource.\n     *\n     * @param {?String} paymentTypeName\n     * @param {?String} multipleValidation\n     * @see https://docs.heidelpay.com/docs/customer-ui-integration\n     * @returns {{createCustomer: Function, updateCustomer: Function}} Customer Resource\n     */\n    createCustomer(paymentTypeName = null, multipleValidation = false) {\n        var Customer = this.settings.isB2B ? this.unzerInstance.B2BCustomer() : this.unzerInstance.Customer();\n        var customerObj = this.settings.customer || {};\n        var continueButton = this.settings.submitButton || document.getElementById(\"submit-button\");\n        let options = {\n            containerId: 'customer',\n            showInfoBox: false,\n            showHeader: false,\n            fields: ['name', 'birthdate']\n        };\n\n        if (paymentTypeName) {\n            options.paymentTypeName = paymentTypeName;\n        }\n\n        Customer.initFormFields(customerObj);\n        if (multipleValidation) {\n            continueButton.setAttribute('data-s360-valid', 0);\n\n            Customer.addEventListener('validate', (e) => {\n                // console.log('customer validate', e, continueButton, continueButton.getAttribute('data-s360-valid'));\n                continueButton.setAttribute('disabled', true);\n\n                if (e.success) {\n                    // everything is still valid\n                    if (continueButton.getAttribute('data-s360-valid') == 'all') {\n                        continueButton.removeAttribute('disabled');\n                        return;\n                    }\n\n                    // payment method is already valid -> everything is valid\n                    if (continueButton.getAttribute('data-s360-valid') == paymentTypeName) {\n                        continueButton.setAttribute('data-s360-valid', 'all');\n                        continueButton.removeAttribute('disabled');\n                        return;\n                    }\n\n                    continueButton.setAttribute('data-s360-valid', 'customer');\n                    return;\n                }\n\n                // only invalidate if the customer was valid before\n                if (continueButton.getAttribute('data-s360-valid') == 'customer') {\n                    continueButton.setAttribute('data-s360-valid', 0);\n                } else if (continueButton.getAttribute('data-s360-valid') == 'all') {\n                    continueButton.setAttribute('data-s360-valid', paymentTypeName);\n                }\n            });\n        } else {\n            Customer.addEventListener('validate', (e) => {\n                if (e.success) {\n                    continueButton.removeAttribute('disabled');\n                    return;\n                }\n\n                continueButton.setAttribute('disabled', true);\n            });\n        }\n\n        if (this.settings.isB2B) {\n            options.fields = ['companyInfo'];\n            // options = {containerId: 'customer'};\n        }\n\n        if (this.customerId) {\n            Customer.update(this.customerId, options);\n            return Customer;\n        }\n\n        Customer.create(options);\n\n        return Customer;\n    }\n\n    /**\n     * Hide form fields from unzer ui component because they are already filled by the shop\n     * @param {string} paymentMethodName\n     */\n    hideFormFields(paymentMethodName) {\n        const field = $('#customer');\n\n        field.find('.field').filter(\n            '.city, .company, :has(.country), .street, .zip, .firstname, .lastname'\n        ).hide();\n        field.find('.salutation-customer').hide();\n        field.find('.firstname, .lastname').parent('.fields').hide();\n        field.find('.unzerUI.divider-horizontal:eq(0)').hide();\n        field.find('.unzerUI.message.downArrow').hide();\n\n        if (paymentMethodName) {\n            field.find('.field').filter('.checkbox-billingAddress, .email').hide();\n            field.find('.field').filter(\n                '.billing-name, .billing-street, .billing-zip, .billing-city, :has(.billing-country)'\n            ).hide();\n            field.find('.unzerUI.form>.checkboxLabel').hide();\n            field.find('.unzerUI.form>.salutation-unzer-' + paymentMethodName + '-customer').hide();\n        }\n    }\n\n    /**\n     * Create Paylayter Installment Payment Type\n     *\n     * @see https://docs.unzer.com/payment-methods/unzer-installment-upl/accept-unzer-installment-ui-component/\n     * @returns {{createResource: Function}}\n     */\n    createPaylaterInstallment() {\n        this.customerResource = this.createCustomer('paylater-installment', true);\n        const continueButton = this.settings.submitButton || document.getElementById(\"submit-button\");\n        const paylaterInstallment = this.unzerInstance.PaylaterInstallment();\n\n        this.hideFormFields('paylater-installment');\n\n        paylaterInstallment.create({\n            containerId: 'paylater-installment',\n            amount: this.settings.amount,\n            currency: this.settings.currency,\n            country: this.settings.country\n        });\n\n        paylaterInstallment.addEventListener('paylaterInstallmentEvent', (e) => {\n            switch (e.currentStep) {\n                case 'plan-list':\n                    continueButton.setAttribute('disabled', true);\n                    break;\n\n                case 'plan-detail':\n                    continueButton.setAttribute('disabled', false);\n                    break;\n\n                default:\n                    break;\n            }\n\n            const isValid = e.action === 'validate' && e.success;\n            this.onPaylaterInputValidation(e, isValid, 'paylater-installment', continueButton);\n        });\n\n        return paylaterInstallment;\n    }\n\n    /**\n     * Create Paylayter Invoice Payment Type\n     *\n     * @see https://docs.unzer.com/payment-methods/unzer-invoice-upl/accept-unzer-invoice-upl-ui-component/\n     * @returns {{createResource: Function}}\n     */\n    createPaylaterInvoice() {\n        this.customerResource = this.createCustomer('paylater-invoice', true);\n        const continueButton = this.settings.submitButton || document.getElementById(\"submit-button\");\n        const paylaterInvoice = this.unzerInstance.PaylaterInvoice();\n\n        this.hideFormFields('paylater-invoice');\n\n        paylaterInvoice.create({\n            containerId: 'paylater-invoice',\n            customerType: this.settings.isB2B ? 'B2B' : 'B2C'\n        });\n\n        paylaterInvoice.addEventListener('change', (e) =>\n            this.onPaylaterInputValidation(\n                e,\n                e.success,\n                'paylater-invoice',\n                continueButton\n            )\n        );\n\n        return paylaterInvoice;\n    }\n\n    /**\n     * Create Paylayter Invoice Payment Type\n     *\n     * @see https://docs.unzer.com/payment-methods/direct-debit-secured/accept-direct-debit-secured-ui-component/\n     * @returns {{createResource: Function}}\n     */\n    createPaylaterDirectDebit() {\n        this.customerResource = this.createCustomer('paylater-direct-debit', true);\n        const continueButton = this.settings.submitButton || document.getElementById(\"submit-button\");\n        const paylaterDirectDebit = this.unzerInstance.PaylaterDirectDebit();\n\n        this.hideFormFields('paylater-direct-debit');\n\n        paylaterDirectDebit.create('paylater-direct-debit', {\n            containerId: 'paylater-direct-debit',\n            customerType: this.settings.isB2B ? 'B2B' : 'B2C'\n        });\n\n        paylaterDirectDebit.addEventListener('change', (e) =>\n            this.onPaylaterInputValidation(\n                e,\n                e.success,\n                'paylater-direct-debit',\n                continueButton\n            )\n        );\n\n        return paylaterDirectDebit;\n    }\n\n    /**\n     * Create Bancontact Payment Type\n     *\n     * @see https://docs.unzer.com/payment-methods/bancontact/accept-bancontact-ui-component/\n     * @returns {{createResource: Function}}\n     */\n    createBancontact() {\n        const bancontact = this.unzerInstance.Bancontact();\n        const styling = { fontSize: null, fontColor: null, fontFamily: null };\n\n        if (this.settings.styling) {\n            styling.fontColor = this.settings.styling.fontColor || null;\n            styling.fontSize = this.settings.styling.fontSize || null;\n            styling.fontFamily = this.settings.styling.fontFamily || null;\n        }\n\n        bancontact.create('holder', {\n            containerId: 'bancontact-holder',\n            fontSize: styling.fontSize,\n            fontColor: styling.fontColor,\n            fontFamily: styling.fontFamily\n        });\n\n        return bancontact;\n    }\n\n    /**\n     * Create a new Card Payment Type.\n     *\n     * @see https://docs.heidelpay.com/docs/credit-card-ui-integration\n     * @returns {{createResource: Function}} Card Payment Type\n     */\n    createCard() {\n        var Card = this.unzerInstance.Card();\n        var styling = {fontSize: null, fontColor: null, fontFamily: null};\n\n        if (this.settings.styling) {\n            styling.fontColor = this.settings.styling.fontColor || null;\n            styling.fontSize = this.settings.styling.fontSize || null;\n            styling.fontFamily = this.settings.styling.fontFamily || null;\n        }\n\n        Card.create('number', {\n            containerId: 'card-element-id-number',\n            onlyIframe: false,\n            fontSize: styling.fontSize,\n            fontColor: styling.fontColor,\n            fontFamily: styling.fontFamily\n        });\n        Card.create('expiry', {\n            containerId: 'card-element-id-expiry',\n            onlyIframe: false,\n            fontSize: styling.fontSize,\n            fontColor: styling.fontColor,\n            fontFamily: styling.fontFamily\n        });\n        Card.create('cvc', {\n            containerId: 'card-element-id-cvc',\n            onlyIframe: false,\n            fontSize: styling.fontSize,\n            fontColor: styling.fontColor,\n            // fontFamily: styling.fontFamily // messes with hidden font in firefox\n        });\n\n        // Enable pay button initially\n        var self = this;\n        var formFieldValid = {};\n\n        /** @type {HTMLElement} continueButton */\n        var continueButton = self.settings.submitButton || document.getElementById(\"submit-button\");\n        continueButton.setAttribute('disabled', true);\n\n        var eventHandlerCardInput = function (e) {\n            if (e.success) {\n                formFieldValid[e.type] = true;\n                self.errorHandler.hide();\n            }\n\n            if (e.error) {\n                formFieldValid[e.type] = false;\n                self.errorHandler.show(e.error);\n            }\n\n            if (formFieldValid.number && formFieldValid.expiry && formFieldValid.cvc) {\n                continueButton.removeAttribute('disabled');\n                return;\n            }\n\n            continueButton.setAttribute('disabled', true);\n        };\n\n        Card.addEventListener('change', eventHandlerCardInput);\n\n        return Card;\n    }\n\n    /**\n     * Create a new Invoice Payment Type.\n     *\n     * @see https://docs.heidelpay.com/docs/invoice-ui-integration\n     * @returns {{createResource: Function}} Invoice Payment Type\n     */\n    createInvoice() {\n        return this.unzerInstance.Invoice();\n    }\n\n    /**\n     * Create a new Invoice Guaranteed Payment Type.\n     *\n     * @see https://docs.heidelpay.com/docs/invoice-ui-integration\n     * @returns {{createResource: Function}} Invoice Payment Type\n     */\n    createInvoiceGuaranteed() {\n        this.customerResource = this.createCustomer();\n\n        return this.unzerInstance.InvoiceSecured();\n    }\n\n    /**\n     * Create a new Invoice Factoring Payment Type.\n     *\n     * @see https://docs.heidelpay.com/docs/invoice-ui-integration\n     * @returns {{createResource: Function}} Invoice Payment Type\n     */\n    createInvoiceFactoring() {\n        this.customerResource = this.createCustomer();\n\n        return this.unzerInstance.InvoiceSecured();\n    }\n\n    /**\n     * Create a new SEPA Direct Debit Payment Type.\n     *\n     * @see https://docs.heidelpay.com/docs/sepa-direct-debit-ui-integration\n     * @returns {{createResource: Function}} SEPA Direct Debit Payment Type\n     */\n    createSepa() {\n        var Sepa = this.unzerInstance.SepaDirectDebit();\n        Sepa.create('sepa-direct-debit', {\n            containerId: 'sepa-IBAN'\n        });\n\n        /** @type {HTMLElement} continueButton */\n        const continueButton = this.settings.submitButton || document.getElementById(\"submit-button\");\n        continueButton.setAttribute('disabled', true);\n\n        Sepa.addEventListener('change', (e) => {\n            if (e.success) {\n                continueButton.removeAttribute('disabled');\n                this.errorHandler.hide();\n                return;\n            }\n\n            continueButton.setAttribute('disabled', true);\n        });\n\n        return Sepa;\n    }\n\n    /**\n     * Create a new SEPA Direct Debit (guaranteed) Payment Type.\n     *\n     * @see https://docs.heidelpay.com/docs/sepa-direct-debit-ui-integration\n     * @returns {{createResource: Function}} SEPA Direct Debit (guaranteed) Payment Type\n     */\n    createSepaGuaranteed() {\n        var SepaGuaranteed = this.unzerInstance.SepaDirectDebitSecured();\n        SepaGuaranteed.create('sepa-direct-debit-guaranteed', {\n            containerId: 'sepa-guaranteed-IBAN'\n        });\n\n        /** @type {HTMLElement} continueButton */\n        const continueButton = this.settings.submitButton || document.getElementById(\"submit-button\");\n        continueButton.setAttribute('disabled', true);\n\n        SepaGuaranteed.addEventListener('change', (e) => {\n            if (e.success) {\n                continueButton.removeAttribute('disabled');\n                this.errorHandler.hide();\n                return;\n            }\n\n            continueButton.setAttribute('disabled', true);\n        });\n\n        this.customerResource = this.createCustomer();\n\n        return SepaGuaranteed;\n    }\n\n    /**\n     * Create a new PayPal Payment Type.\n     *\n     * @see https://docs.heidelpay.com/docs/paypal-ui-integration\n     * @returns {{createResource: Function}} Papal Payment Type\n     */\n   createPaypal() {\n        var Paypal = this.unzerInstance.Paypal();\n        Paypal.create('email', {\n            containerId: 'paypal-element-email'\n        });\n\n        return Paypal;\n    }\n\n    /**\n     * Create a new SOFORT Payment Type.\n     *\n     * @see https://docs.heidelpay.com/docs/redirect-ui-integration#sofort\n     * @returns {{createResource: Function}} Sofort Payment Type\n     */\n    createSofort() {\n        return this.unzerInstance.Sofort();\n    }\n\n    /**\n     * Create a new Giropay Payment Type.\n     *\n     * @see https://docs.heidelpay.com/docs/redirect-ui-integration#giropay\n     * @returns {{createResource: Function}} Giropay Payment Type\n     */\n    createGiropay () {\n        return this.unzerInstance.Giropay();\n    }\n\n    /**\n     * Create a new Przelewy24 Payment Type.\n     *\n     * @see https://docs.heidelpay.com/docs/redirect-ui-integration#przelewy24\n     * @returns {{createResource: Function}} Przelewy24 Payment Type\n     */\n    createPrzelewy24() {\n        return this.unzerInstance.Przelewy24();\n    }\n\n    /**\n     * Create a new iDEAL Payment Type.\n     *\n     * @see https://docs.heidelpay.com/docs/ideal-ui-integration\n     * @returns {{createResource: Function}} iDEAL Payment Type\n     */\n    createIdeal() {\n        var Ideal = this.unzerInstance.Ideal();\n\n        Ideal.create('ideal', {\n            containerId: 'ideal-element'\n        });\n\n        /** @type {HTMLElement} continueButton */\n        const continueButton = this.settings.submitButton || document.getElementById(\"submit-button\");\n        continueButton.setAttribute('disabled', true);\n\n        Ideal.addEventListener('change', (e) => {\n            if (e.value) {\n                continueButton.removeAttribute('disabled');\n                this.errorHandler.hide();\n                return;\n            }\n\n            continueButton.setAttribute('disabled', true);\n        });\n\n        return Ideal;\n    }\n\n    /**\n     * Create a new Prepayment Payment Type.\n     *\n     * @see https://docs.heidelpay.com/docs/prepayment-ui-integration\n     * @returns {{createResource: Function}} Prepayment Payment Type\n     */\n    createPrepayment() {\n        return this.unzerInstance.Prepayment();\n    }\n\n    /**\n     * Create a new EPS Payment Type.\n     *\n     * @see https://docs.heidelpay.com/docs/eps-ui-integration\n     * @returns {{createResource: Function}} EPS Payment Type\n     */\n    createEPS() {\n        var EPS = this.unzerInstance.EPS();\n\n        EPS.create('eps', {\n            containerId: 'eps-element'\n        });\n\n        return EPS;\n    }\n\n    /**\n     * Create a new FlexiPay Direct Payment Type.\n     *\n     * @see https://docs.heidelpay.com/docs/redirect-ui-integration#flexipay-direct\n     * @returns {{createResource: Function}} Alipay Payment Type\n     */\n    createFlexiPayDirect() {\n        return this.unzerInstance.FlexiPayDirect();\n    }\n\n    /**\n     * Create a new Alipay Payment Type.\n     *\n     * @see https://docs.heidelpay.com/docs/redirect-ui-integration#alipay\n     * @returns {{createResource: Function}} Alipay Payment Type\n     */\n    createAlipay() {\n        return this.unzerInstance.Alipay();\n    }\n\n    /**\n     * Create an new WeChat Pay Payment Type.\n     *\n     * @see https://docs.heidelpay.com/docs/redirect-ui-integration#wechat-pay\n     * @returns {{createResource: Function}} WeChat Pay Payment Type\n     */\n    createWeChatPay() {\n        return this.unzerInstance.Wechatpay();\n    }\n\n    /**\n     * Create a new Hire Purchase Payment Type.\n     *\n     * @see https:://docs.heidelpay.com/docs/hire-purchase-ui-integration\n     * @returns {{createResource: Function}} Hire Purchase Payment Type\n     */\n   createHirePurchase() {\n        var InstallmentSecured = this.unzerInstance.InstallmentSecured();\n        var self = this;\n        this.customerResource = this.createCustomer();\n\n        /** @type {HTMLElement} continueButton */\n        var continueButton = self.settings.submitButton || document.getElementById(\"submit-button\");\n        continueButton.setAttribute('style', 'display: none');\n        continueButton.setAttribute('disabled', true);\n\n        InstallmentSecured.create({\n            containerId: 'hire-purchase-element',\n            amount: this.settings.amount || null,\n            currency: this.settings.currency || null,\n            effectiveInterest: this.settings.effectiveInterest || null,\n            orderDate: this.settings.orderDate || null\n        }).then(function (data) {\n            // if successful, notify the user that the list of installments was fetched successfully\n            // in case you were using a loading element during the fetching process,\n            // you can remove it inside this callback function\n        })\n        .catch(function (response) {\n            // sent an error message to the user (fetching installment list failed)\n            var msg = '';\n            console.error(response.message);\n\n            response.error.details.forEach(function(err) {\n                console.error('API-Error: ' + err.code);\n                msg += err.customerMessage;\n            });\n\n            self.errorHandler.show(msg);\n        });\n\n\n        // Listen to UI events\n        InstallmentSecured.addEventListener('installmentSecuredEvent', function (e) {\n            if (e.action === 'validate') {\n                if (e.success) {\n                    continueButton.removeAttribute('disabled');\n                    return;\n                }\n\n                continueButton.setAttribute('disabled', true);\n            }\n\n            if (e.action === 'change-step') {\n                if (e.currentSteep === 'plan-list') {\n                    continueButton.setAttribute('style', 'display: none');\n                    continueButton.setAttribute('disabled', true);\n                    return;\n                }\n\n                continueButton.setAttribute('style', 'display: inline-block');\n            }\n        });\n\n        return InstallmentSecured;\n    }\n}\n",
+        "/**\n * Heidelpay Installment Modal Window Handler\n *\n * @param {string} modalSelector\n * @param {HTMLElement} btn Submit Trigger\n * @param {JQuery<HTMLElement>} $form\n */\nconst Installment = (modalSelector, btn, $form) => {\n    var modal = $(modalSelector);\n\n    btn.addEventListener('click', function () {\n        $form.trigger('submit');\n    });\n\n    $form.on('submit', function (e) {\n        if (!modal.is(':visible')) {\n            e.preventDefault();\n            modal.modal('show');\n            return false;\n        }\n\n        return true;\n    });\n};\n\nexport default Installment;",
+        "export default class Debugging {\n    constructor($container) {\n        this.$container = $container;\n        this.$log = null;\n\n        if (!window.UNZER_DEBUG) {\n            return;\n        }\n\n        this.createLogTemplate();\n    }\n\n    log(context, data = {}) {\n        if (!window.UNZER_DEBUG) {\n            return;\n        }\n\n        if (!this.$log) {\n            this.createLogTemplate();\n        }\n\n        this.$log.append(\n            '<li><strong>' + context + '</strong><pre>' + JSON.stringify(data,  null, '  ') +  '</pre></li>'\n        );\n    }\n\n    createLogTemplate() {\n        this.$container.append(\n            $('<div class=\"debug-log card card-body bg-light\"><ul class=\"list-unstyled\"></ul></div>')\n        );\n        this.$log = this.$container.find('.debug-log > ul');\n    }\n}\n",
+        "export default class ErrorHandler {\n    /**\n     * @param {JQuery<HTMLElement>|null} $wrapper Wrapper for Container to display error messages in\n     * @param {JQuery<HTMLElement>|null} $holder Container to display error messages in\n     */\n    constructor($wrapper, $holder) {\n        this.$wrapper = $wrapper || $('#error-container');\n        this.$holder = $holder || this.$wrapper.find('.alert');\n    }\n\n    /**\n     * Show Error message\n     * @param {String} message\n     */\n    show(message) {\n        this.$wrapper.show();\n        this.$holder.html(message);\n    }\n\n    /**\n     * Hide error message\n     */\n    hide() {\n        this.$wrapper.hide();\n        this.$holder.html();\n    }\n}\n",
+        "function _classCallCheck(instance, Constructor) {\n  if (!(instance instanceof Constructor)) {\n    throw new TypeError(\"Cannot call a class as a function\");\n  }\n}\n\nmodule.exports = _classCallCheck, module.exports.__esModule = true, module.exports[\"default\"] = module.exports;",
+        "function _defineProperties(target, props) {\n  for (var i = 0; i < props.length; i++) {\n    var descriptor = props[i];\n    descriptor.enumerable = descriptor.enumerable || false;\n    descriptor.configurable = true;\n    if (\"value\" in descriptor) descriptor.writable = true;\n    Object.defineProperty(target, descriptor.key, descriptor);\n  }\n}\n\nfunction _createClass(Constructor, protoProps, staticProps) {\n  if (protoProps) _defineProperties(Constructor.prototype, protoProps);\n  if (staticProps) _defineProperties(Constructor, staticProps);\n  Object.defineProperty(Constructor, \"prototype\", {\n    writable: false\n  });\n  return Constructor;\n}\n\nmodule.exports = _createClass, module.exports.__esModule = true, module.exports[\"default\"] = module.exports;",
+        "function _defineProperty(obj, key, value) {\n  if (key in obj) {\n    Object.defineProperty(obj, key, {\n      value: value,\n      enumerable: true,\n      configurable: true,\n      writable: true\n    });\n  } else {\n    obj[key] = value;\n  }\n\n  return obj;\n}\n\nmodule.exports = _defineProperty, module.exports.__esModule = true, module.exports[\"default\"] = module.exports;",
+        "function _interopRequireDefault(obj) {\n  return obj && obj.__esModule ? obj : {\n    \"default\": obj\n  };\n}\n\nmodule.exports = _interopRequireDefault, module.exports.__esModule = true, module.exports[\"default\"] = module.exports;"
+    ]
+}
\ No newline at end of file
diff --git a/frontend/js/unzer.min.js b/frontend/js/unzer.min.js
new file mode 100644
index 0000000..466fd07
--- /dev/null
+++ b/frontend/js/unzer.min.js
@@ -0,0 +1,2 @@
+!function(){function e(t,n,r){function i(s,u){if(!n[s]){if(!t[s]){var o="function"==typeof require&&require;if(!u&&o)return o(s,!0);if(a)return a(s,!0);var l=new Error("Cannot find module '"+s+"'");throw l.code="MODULE_NOT_FOUND",l}var c=n[s]={exports:{}};t[s][0].call(c.exports,function(e){return i(t[s][1][e]||e)},c,c.exports,e,t,n,r)}return n[s].exports}for(var a="function"==typeof require&&require,s=0;s<r.length;s++)i(r[s]);return i}return e}()({1:[function(e,t,n){"use strict";var r=e("@babel/runtime/helpers/interopRequireDefault"),i=r(e("./payments/applepay")),a=r(e("./payments/general")),s=r(e("./payments/instalment"));window.HpPayment=a.default,window.HpInstalment=s.default,window.UnzerApplePay=i.default},{"./payments/applepay":2,"./payments/general":3,"./payments/instalment":4,"@babel/runtime/helpers/interopRequireDefault":10}],2:[function(e,t,n){"use strict";var r=e("@babel/runtime/helpers/interopRequireDefault");Object.defineProperty(n,"__esModule",{value:!0}),n.default=void 0;var i=r(e("@babel/runtime/helpers/classCallCheck")),a=r(e("@babel/runtime/helpers/createClass")),s=r(e("../utils/errors")),u=r(e("../utils/debugging")),o={NOT_SUPPORTED:"This device does not support Apple Pay!",CANCEL_BY_USER:"Canceled payment process by user!"},l=function(){function e(t,n,r,a){(0,i.default)(this,e),this.settings=a||{},this.snippets=Object.assign(o,r);var l={locale:this.settings.locale||"de-DE"};this.applePayPaymentRequest=n,this.unzerInstance=new unzer(t,l),this.errorHandler=new s.default(this.settings.$errorContainer,this.settings.$errorMessage),this.debugging=new u.default($(".unzerUI")),window.UNZER_DEBUG=!!this.unzerInstance._isSandbox||this.unzerInstance.config.hasSandboxKey,window.ApplePaySession&&window.ApplePaySession.canMakePayments()?(this.form=this.settings.form||document.getElementById("form_payment_extra"),this.initPaymentType=this.initPaymentType.bind(this),this.form.addEventListener("submit",this.initPaymentType),$(".apple-pay-button").on("click",this.initPaymentType.bind(this))):this.unsupportedDevice()}return(0,a.default)(e,[{key:"initPaymentType",value:function(e){var t=this;if(e.preventDefault(),window.ApplePaySession&&window.ApplePaySession.canMakePayments()){var n=new ApplePaySession(3,this.applePayPaymentRequest);this.debugging.log("[> Init Payment Type]",{paymentRequest:this.applePayPaymentRequest}),n.onvalidatemerchant=function(e){t.merchantValidationCallback(e,n)},n.onpaymentauthorized=function(e){t.applePayAuthorizedCallback(e,n)},n.oncancel=function(e){t.debugging.log("[> Cancel]",{event:e}),t.errorHandler.show(t.snippets.CANCEL_BY_USER)},n.begin()}else this.unsupportedDevice()}},{key:"merchantValidationCallback",value:function(e,t){var n=this,r=JSON.stringify(e.validationURL);this.debugging.log("[> Merchant Validation]",{event:e}),$.ajax({url:$.evo.io().options.ioUrl,method:"POST",dataType:"json",data:'io={"name":"apple_pay_merchantvalidation", "params":['+r+"]}"}).done(function(e){n.debugging.log("[> Merchant Validation Response]",e);try{t.completeMerchantValidation(e)}catch(e){alert(e.message)}}).fail(function(e){n.debugging.log("[> Merchant Validation Error]",e),n.errorHandler.show(JSON.stringify(e.statusText)),t.abort()})}},{key:"applePayAuthorizedCallback",value:function(e,t){var n=this,r=this.unzerInstance.ApplePay(),i=e.payment.token.paymentData;this.debugging.log("[> Payment Authorization]",{unzerApplePayInstance:r,event:e,paymentData:i}),r.createResource(i).then(function(e){var r=JSON.stringify(e.id);$.ajax({url:$.evo.io().options.ioUrl,method:"POST",dataType:"json",data:'io={"name":"apple_pay_payment_authorized", "params":['+r+"]}"}).done(function(e){n.debugging.log("[> Payment Authorization Response]",{result:e,typeId:r});var i=e.transactionStatus;if("success"===i||"pending"===i){t.completePayment({status:window.ApplePaySession.STATUS_SUCCESS});var a=document.createElement("input");a.setAttribute("type","hidden"),a.setAttribute("name","paymentData[resourceId]"),a.setAttribute("value",r),n.form.appendChild(a),n.form.removeEventListener("submit",n.initPaymentType),n.form.submit()}else n.abortPaymentSession(t)}).fail(function(e){n.errorHandler.show(e.statusText),n.abortPaymentSession(t)})}).catch(function(e){n.debugging.log("[> Payment Authorization Error]",e),n.errorHandler.show(e.message),n.abortPaymentSession(t)})}},{key:"unsupportedDevice",value:function(){this.settings.submitButton.disabled=!0,this.settings.submitButton.ariaDisabled=!0,this.errorHandler.show(this.snippets.NOT_SUPPORTED)}},{key:"abortPaymentSession",value:function(e){this.debugging.log("[> Abort Payment Session]",{status:window.ApplePaySession.STATUS_FAILURE}),e.completePayment({status:window.ApplePaySession.STATUS_FAILURE}),e.abort()}}]),e}();n.default=l},{"../utils/debugging":5,"../utils/errors":6,"@babel/runtime/helpers/classCallCheck":7,"@babel/runtime/helpers/createClass":8,"@babel/runtime/helpers/interopRequireDefault":10}],3:[function(e,t,n){"use strict";var r=e("@babel/runtime/helpers/interopRequireDefault");Object.defineProperty(n,"__esModule",{value:!0}),n.default=void 0;var i=r(e("@babel/runtime/helpers/classCallCheck")),a=r(e("@babel/runtime/helpers/createClass")),s=r(e("@babel/runtime/helpers/defineProperty")),u=r(e("../utils/errors")),o=function(){function e(t,n,r){(0,i.default)(this,e),this.settings=r||{};var a={locale:this.settings.locale||"de-DE"};this.unzerInstance=new unzer(t,a),this.errorHandler=new u.default(this.settings.$errorContainer,this.settings.$errorMessage),this.customerId=r.customerId||null,this.customerResource=null,this.paymentType=this.initPaymentType(n),this.form=this.settings.form||document.getElementById("form_payment_extra"),this.handleFormSubmit=this.handleFormSubmit.bind(this),this.form.addEventListener("submit",this.handleFormSubmit),this.settings.autoSubmit&&this.handleFormSubmit(new Event("submit"))}return(0,a.default)(e,[{key:"initPaymentType",value:function(t){switch(t){case e.PAYMENT_TYPES.CARD:return this.createCard();case e.PAYMENT_TYPES.INVOICE:return this.createInvoice();case e.PAYMENT_TYPES.INVOICE_GUARANTEED:return this.createInvoiceGuaranteed();case e.PAYMENT_TYPES.INVOICE_FACTORING:return this.createInvoiceFactoring();case e.PAYMENT_TYPES.SEPA:return this.createSepa();case e.PAYMENT_TYPES.SEPA_GUARANTEED:return this.createSepaGuaranteed();case e.PAYMENT_TYPES.PAYPAL:return this.createPaypal();case e.PAYMENT_TYPES.SOFORT:return this.createSofort();case e.PAYMENT_TYPES.GIROPAY:return this.createGiropay();case e.PAYMENT_TYPES.PRZELEWY24:return this.createPrzelewy24();case e.PAYMENT_TYPES.IDEAL:return this.createIdeal();case e.PAYMENT_TYPES.PREPAYMENT:return this.createPrepayment();case e.PAYMENT_TYPES.EPS:return this.createEPS();case e.PAYMENT_TYPES.FLEXIPAY_DIRECT:return this.createFlexiPayDirect();case e.PAYMENT_TYPES.ALIPAY:return this.createAlipay();case e.PAYMENT_TYPES.WECHAT_PAY:return this.createWeChatPay();case e.PAYMENT_TYPES.HIRE_PURCHASE:return this.createHirePurchase();case e.PAYMENT_TYPES.PAYLATER_INVOICE:return this.createPaylaterInvoice();case e.PAYMENT_TYPES.BANCONTACT:return this.createBancontact();case e.PAYMENT_TYPES.PAYLATER_INSTALLMENT:return this.createPaylaterInstallment();case e.PAYMENT_TYPES.PAYLATER_DIRECT_DEBIT:return this.createPaylaterDirectDebit();default:throw new Error("Unkown Payment Type: "+t)}}},{key:"handleFormSubmit",value:function(e){var t=this;e.preventDefault();var n=[this.paymentType.createResource()];this.customerResource&&n.push(this.customerId?this.customerResource.updateCustomer():this.customerResource.createCustomer()),Promise.all(n).then(function(e){var n=document.createElement("input");if(n.setAttribute("type","hidden"),n.setAttribute("name","paymentData[resourceId]"),n.setAttribute("value",e[0].id),t.form.appendChild(n),e.length>=2){var r=document.createElement("input");r.setAttribute("type","hidden"),r.setAttribute("name","paymentData[customerId]"),r.setAttribute("value",e[1].id),t.form.appendChild(r)}t.form.removeEventListener("submit",t.handleFormSubmit),t.form.submit()}).catch(function(e){t.errorHandler.show(e.message)})}},{key:"onPaylaterInputValidation",value:function(e,t,n,r){if(t)return"all"==r.getAttribute("data-s360-valid")?void r.removeAttribute("disabled"):"customer"==r.getAttribute("data-s360-valid")?(r.setAttribute("data-s360-valid","all"),void r.removeAttribute("disabled")):void r.setAttribute("data-s360-valid",n);r.setAttribute("disabled",!0),r.getAttribute("data-s360-valid")==n?r.setAttribute("data-s360-valid",0):"all"==r.getAttribute("data-s360-valid")&&r.setAttribute("data-s360-valid","customer")}},{key:"createCustomer",value:function(){var e=arguments.length>0&&void 0!==arguments[0]?arguments[0]:null,t=arguments.length>1&&void 0!==arguments[1]&&arguments[1],n=this.settings.isB2B?this.unzerInstance.B2BCustomer():this.unzerInstance.Customer(),r=this.settings.customer||{},i=this.settings.submitButton||document.getElementById("submit-button"),a={containerId:"customer",showInfoBox:!1,showHeader:!1,fields:["name","birthdate"]};return e&&(a.paymentTypeName=e),n.initFormFields(r),t?(i.setAttribute("data-s360-valid",0),n.addEventListener("validate",function(t){if(i.setAttribute("disabled",!0),t.success)return"all"==i.getAttribute("data-s360-valid")?void i.removeAttribute("disabled"):i.getAttribute("data-s360-valid")==e?(i.setAttribute("data-s360-valid","all"),void i.removeAttribute("disabled")):void i.setAttribute("data-s360-valid","customer");"customer"==i.getAttribute("data-s360-valid")?i.setAttribute("data-s360-valid",0):"all"==i.getAttribute("data-s360-valid")&&i.setAttribute("data-s360-valid",e)})):n.addEventListener("validate",function(e){e.success?i.removeAttribute("disabled"):i.setAttribute("disabled",!0)}),this.settings.isB2B&&(a.fields=["companyInfo"]),this.customerId?(n.update(this.customerId,a),n):(n.create(a),n)}},{key:"hideFormFields",value:function(e){var t=$("#customer");t.find(".field").filter(".city, .company, :has(.country), .street, .zip, .firstname, .lastname").hide(),t.find(".salutation-customer").hide(),t.find(".firstname, .lastname").parent(".fields").hide(),t.find(".unzerUI.divider-horizontal:eq(0)").hide(),t.find(".unzerUI.message.downArrow").hide(),e&&(t.find(".field").filter(".checkbox-billingAddress, .email").hide(),t.find(".field").filter(".billing-name, .billing-street, .billing-zip, .billing-city, :has(.billing-country)").hide(),t.find(".unzerUI.form>.checkboxLabel").hide(),t.find(".unzerUI.form>.salutation-unzer-"+e+"-customer").hide())}},{key:"createPaylaterInstallment",value:function(){var e=this;this.customerResource=this.createCustomer("paylater-installment",!0);var t=this.settings.submitButton||document.getElementById("submit-button"),n=this.unzerInstance.PaylaterInstallment();return this.hideFormFields("paylater-installment"),n.create({containerId:"paylater-installment",amount:this.settings.amount,currency:this.settings.currency,country:this.settings.country}),n.addEventListener("paylaterInstallmentEvent",function(n){switch(n.currentStep){case"plan-list":t.setAttribute("disabled",!0);break;case"plan-detail":t.setAttribute("disabled",!1)}var r="validate"===n.action&&n.success;e.onPaylaterInputValidation(n,r,"paylater-installment",t)}),n}},{key:"createPaylaterInvoice",value:function(){var e=this;this.customerResource=this.createCustomer("paylater-invoice",!0);var t=this.settings.submitButton||document.getElementById("submit-button"),n=this.unzerInstance.PaylaterInvoice();return this.hideFormFields("paylater-invoice"),n.create({containerId:"paylater-invoice",customerType:this.settings.isB2B?"B2B":"B2C"}),n.addEventListener("change",function(n){return e.onPaylaterInputValidation(n,n.success,"paylater-invoice",t)}),n}},{key:"createPaylaterDirectDebit",value:function(){var e=this;this.customerResource=this.createCustomer("paylater-direct-debit",!0);var t=this.settings.submitButton||document.getElementById("submit-button"),n=this.unzerInstance.PaylaterDirectDebit();return this.hideFormFields("paylater-direct-debit"),n.create("paylater-direct-debit",{containerId:"paylater-direct-debit",customerType:this.settings.isB2B?"B2B":"B2C"}),n.addEventListener("change",function(n){return e.onPaylaterInputValidation(n,n.success,"paylater-direct-debit",t)}),n}},{key:"createBancontact",value:function(){var e=this.unzerInstance.Bancontact(),t={fontSize:null,fontColor:null,fontFamily:null};return this.settings.styling&&(t.fontColor=this.settings.styling.fontColor||null,t.fontSize=this.settings.styling.fontSize||null,t.fontFamily=this.settings.styling.fontFamily||null),e.create("holder",{containerId:"bancontact-holder",fontSize:t.fontSize,fontColor:t.fontColor,fontFamily:t.fontFamily}),e}},{key:"createCard",value:function(){var e=this.unzerInstance.Card(),t={fontSize:null,fontColor:null,fontFamily:null};this.settings.styling&&(t.fontColor=this.settings.styling.fontColor||null,t.fontSize=this.settings.styling.fontSize||null,t.fontFamily=this.settings.styling.fontFamily||null),e.create("number",{containerId:"card-element-id-number",onlyIframe:!1,fontSize:t.fontSize,fontColor:t.fontColor,fontFamily:t.fontFamily}),e.create("expiry",{containerId:"card-element-id-expiry",onlyIframe:!1,fontSize:t.fontSize,fontColor:t.fontColor,fontFamily:t.fontFamily}),e.create("cvc",{containerId:"card-element-id-cvc",onlyIframe:!1,fontSize:t.fontSize,fontColor:t.fontColor});var n=this,r={},i=n.settings.submitButton||document.getElementById("submit-button");i.setAttribute("disabled",!0);return e.addEventListener("change",function(e){e.success&&(r[e.type]=!0,n.errorHandler.hide()),e.error&&(r[e.type]=!1,n.errorHandler.show(e.error)),r.number&&r.expiry&&r.cvc?i.removeAttribute("disabled"):i.setAttribute("disabled",!0)}),e}},{key:"createInvoice",value:function(){return this.unzerInstance.Invoice()}},{key:"createInvoiceGuaranteed",value:function(){return this.customerResource=this.createCustomer(),this.unzerInstance.InvoiceSecured()}},{key:"createInvoiceFactoring",value:function(){return this.customerResource=this.createCustomer(),this.unzerInstance.InvoiceSecured()}},{key:"createSepa",value:function(){var e=this,t=this.unzerInstance.SepaDirectDebit();t.create("sepa-direct-debit",{containerId:"sepa-IBAN"});var n=this.settings.submitButton||document.getElementById("submit-button");return n.setAttribute("disabled",!0),t.addEventListener("change",function(t){if(t.success)return n.removeAttribute("disabled"),void e.errorHandler.hide();n.setAttribute("disabled",!0)}),t}},{key:"createSepaGuaranteed",value:function(){var e=this,t=this.unzerInstance.SepaDirectDebitSecured();t.create("sepa-direct-debit-guaranteed",{containerId:"sepa-guaranteed-IBAN"});var n=this.settings.submitButton||document.getElementById("submit-button");return n.setAttribute("disabled",!0),t.addEventListener("change",function(t){if(t.success)return n.removeAttribute("disabled"),void e.errorHandler.hide();n.setAttribute("disabled",!0)}),this.customerResource=this.createCustomer(),t}},{key:"createPaypal",value:function(){var e=this.unzerInstance.Paypal();return e.create("email",{containerId:"paypal-element-email"}),e}},{key:"createSofort",value:function(){return this.unzerInstance.Sofort()}},{key:"createGiropay",value:function(){return this.unzerInstance.Giropay()}},{key:"createPrzelewy24",value:function(){return this.unzerInstance.Przelewy24()}},{key:"createIdeal",value:function(){var e=this,t=this.unzerInstance.Ideal();t.create("ideal",{containerId:"ideal-element"});var n=this.settings.submitButton||document.getElementById("submit-button");return n.setAttribute("disabled",!0),t.addEventListener("change",function(t){if(t.value)return n.removeAttribute("disabled"),void e.errorHandler.hide();n.setAttribute("disabled",!0)}),t}},{key:"createPrepayment",value:function(){return this.unzerInstance.Prepayment()}},{key:"createEPS",value:function(){var e=this.unzerInstance.EPS();return e.create("eps",{containerId:"eps-element"}),e}},{key:"createFlexiPayDirect",value:function(){return this.unzerInstance.FlexiPayDirect()}},{key:"createAlipay",value:function(){return this.unzerInstance.Alipay()}},{key:"createWeChatPay",value:function(){return this.unzerInstance.Wechatpay()}},{key:"createHirePurchase",value:function(){var e=this.unzerInstance.InstallmentSecured(),t=this;this.customerResource=this.createCustomer();var n=t.settings.submitButton||document.getElementById("submit-button");return n.setAttribute("style","display: none"),n.setAttribute("disabled",!0),e.create({containerId:"hire-purchase-element",amount:this.settings.amount||null,currency:this.settings.currency||null,effectiveInterest:this.settings.effectiveInterest||null,orderDate:this.settings.orderDate||null}).then(function(e){}).catch(function(e){var n="";console.error(e.message),e.error.details.forEach(function(e){console.error("API-Error: "+e.code),n+=e.customerMessage}),t.errorHandler.show(n)}),e.addEventListener("installmentSecuredEvent",function(e){if("validate"===e.action){if(e.success)return void n.removeAttribute("disabled");n.setAttribute("disabled",!0)}if("change-step"===e.action){if("plan-list"===e.currentSteep)return n.setAttribute("style","display: none"),void n.setAttribute("disabled",!0);n.setAttribute("style","display: inline-block")}}),e}}]),e}();n.default=o,(0,s.default)(o,"PAYMENT_TYPES",{ALIPAY:"Alipay",CARD:"Card",EPS:"EPS",FLEXIPAY_DIRECT:"FlexiPay Direct",HIRE_PURCHASE:"Hire Purchase",PAYPAL:"Paypal",INVOICE:"Invoice",INVOICE_FACTORING:"Invoice Factoring",INVOICE_GUARANTEED:"Invoice Guaranteed",SEPA:"SEPA",SEPA_GUARANTEED:"SEPA (guaranteed)",SOFORT:"SOFORT",GIROPAY:"Giropay",PRZELEWY24:"Przelewy24",IDEAL:"iDEAL",PREPAYMENT:"Prepayment",WECHAT_PAY:"WeChat Pay",PAYLATER_INVOICE:"Paylater Invoice",BANCONTACT:"Bancontact",PAYLATER_INSTALLMENT:"Paylater Installment",PAYLATER_DIRECT_DEBIT:"Paylater Direct Debit"})},{"../utils/errors":6,"@babel/runtime/helpers/classCallCheck":7,"@babel/runtime/helpers/createClass":8,"@babel/runtime/helpers/defineProperty":9,"@babel/runtime/helpers/interopRequireDefault":10}],4:[function(e,t,n){"use strict";Object.defineProperty(n,"__esModule",{value:!0}),n.default=void 0;n.default=function(e,t,n){var r=$(e);t.addEventListener("click",function(){n.trigger("submit")}),n.on("submit",function(e){return!!r.is(":visible")||(e.preventDefault(),r.modal("show"),!1)})}},{}],5:[function(e,t,n){"use strict";var r=e("@babel/runtime/helpers/interopRequireDefault");Object.defineProperty(n,"__esModule",{value:!0}),n.default=void 0;var i=r(e("@babel/runtime/helpers/classCallCheck")),a=r(e("@babel/runtime/helpers/createClass")),s=function(){function e(t){(0,i.default)(this,e),this.$container=t,this.$log=null,window.UNZER_DEBUG&&this.createLogTemplate()}return(0,a.default)(e,[{key:"log",value:function(e){var t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};window.UNZER_DEBUG&&(this.$log||this.createLogTemplate(),this.$log.append("<li><strong>"+e+"</strong><pre>"+JSON.stringify(t,null,"  ")+"</pre></li>"))}},{key:"createLogTemplate",value:function(){this.$container.append($('<div class="debug-log card card-body bg-light"><ul 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r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c=\"function\"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error(\"Cannot find module '\"+i+\"'\");throw a.code=\"MODULE_NOT_FOUND\",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u=\"function\"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()","import ApplePay from './payments/applepay';\nimport UnzerPayment from \"./payments/general\";\nimport Installment from \"./payments/instalment\";\n\nwindow.HpPayment = UnzerPayment;\nwindow.HpInstalment = Installment;\nwindow.UnzerApplePay = ApplePay;\n","import ErrorHandler from \"../utils/errors\";\nimport Debugging from \"../utils/debugging\";\n\n/** @type {ApplePaySnippets} */\nconst ApplePaySnippetsDefaults = {\n    NOT_SUPPORTED: \"This device does not support Apple Pay!\",\n    CANCEL_BY_USER: \"Canceled payment process by user!\"\n};\n\nexport default class ApplePay {\n    /**\n     * Similiar to the HeidelpayPayment class but slightly differently\n     * (apple pay works differently, so yeah, custom class it is :D)\n     *\n     * @class\n     * @param {String} pubKey\n     * @param {ApplePayPaymentRequest} applePayPaymentRequest\n     * @param {ApplePaySnippets} snippets\n     * @param {ApplePaySettings} settings\n     */\n    constructor(pubKey, applePayPaymentRequest, snippets, settings) {\n        /** @type {ApplePaySettings} */\n        this.settings = settings || {};\n\n        /** @type {ApplePaySnippets} */\n        this.snippets = Object.assign(ApplePaySnippetsDefaults, snippets);\n\n        var options = {\n            locale: this.settings.locale || 'de-DE'\n        };\n\n        /** @type {ApplePayPaymentRequest} */\n        this.applePayPaymentRequest = applePayPaymentRequest;\n        this.unzerInstance = new unzer(pubKey, options);\n        this.errorHandler = new ErrorHandler(this.settings.$errorContainer, this.settings.$errorMessage);\n        this.debugging = new Debugging($('.unzerUI'));\n        window.UNZER_DEBUG = !!this.unzerInstance._isSandbox || this.unzerInstance.config.hasSandboxKey; // Enable Debugging in sandbox mode\n\n        if (!window.ApplePaySession|| !window.ApplePaySession.canMakePayments()) {\n            this.unsupportedDevice();\n            return;\n        }\n\n        /** @type {HTMLElement} form Form in which the customer enters additional details */\n        this.form = this.settings.form || document.getElementById('form_payment_extra');\n\n        // Register Events\n        this.initPaymentType = this.initPaymentType.bind(this); // it's a trick! needed in order to overcome the remove event listener\n        this.form.addEventListener('submit', this.initPaymentType);\n        $('.apple-pay-button').on('click', this.initPaymentType.bind(this));\n    }\n\n    /**\n     * Init the payment type in this case means starting the apple pay session\n     * @param {Event} event\n     */\n    initPaymentType(event) {\n        event.preventDefault();\n\n        if (!window.ApplePaySession || !window.ApplePaySession.canMakePayments()) {\n            this.unsupportedDevice();\n            return;\n        }\n\n        // We adhere to Apple Pay version 6 to handle the payment request.\n        const session = new ApplePaySession(3, this.applePayPaymentRequest);\n        this.debugging.log('[> Init Payment Type]', {paymentRequest: this.applePayPaymentRequest});\n\n        session.onvalidatemerchant = (event) => {\n            this.merchantValidationCallback(event, session);\n        };\n\n        session.onpaymentauthorized = (event) => {\n            this.applePayAuthorizedCallback(event, session);\n        };\n\n        session.oncancel = (event) => {\n            this.debugging.log('[> Cancel]', {event});\n            this.errorHandler.show(this.snippets.CANCEL_BY_USER);\n        };\n\n        session.begin();\n    }\n\n    /**\n     * Call the merchant validation in the server-side integration (apple_pay_merchantvalidation)\n     * @param {Event} event\n     * @param {ApplePaySession} session\n     */\n    merchantValidationCallback(event, session) {\n        var validationUrl = JSON.stringify(event.validationURL);\n\n        this.debugging.log('[> Merchant Validation]', {event});\n\n        $.ajax({\n            'url': $.evo.io().options.ioUrl,\n            'method': 'POST',\n            'dataType': 'json',\n            'data': 'io={\"name\":\"apple_pay_merchantvalidation\", \"params\":[' + validationUrl + ']}',\n        }).done((validationResponse) => {\n            this.debugging.log('[> Merchant Validation Response]', validationResponse);\n\n            try {\n                session.completeMerchantValidation(validationResponse);\n            } catch (e) {\n                alert(e.message);\n            }\n        })\n        .fail((error) => {\n            this.debugging.log('[> Merchant Validation Error]', error);\n            this.errorHandler.show(JSON.stringify(error.statusText));\n            session.abort();\n        });\n    }\n\n    /**\n     * Create Apple Pay resource with unzer and save the resource id to charge it later.\n     *\n     * We do this here via AJAX instead of the validateAdditional method in the payment method to set the apple pay\n     * session state accordingly.\n     *\n     * @param {Event} event\n     * @param {ApplePaySession} session\n     */\n    applePayAuthorizedCallback(event, session) {\n        // Get payment data from event.\n        // \"event.payment\" also contains contact information, if they were set via Apple Pay.\n        var self = this;\n        var unzerApplePayInstance = this.unzerInstance.ApplePay();\n        var paymentData = event.payment.token.paymentData;\n\n        this.debugging.log('[> Payment Authorization]', {unzerApplePayInstance, event, paymentData});\n\n        // Create an Unzer instance with your public key\n        unzerApplePayInstance.createResource(paymentData)\n            .then(function (createdResource) {\n                // Hand over the type ID to your backend.\n                var typeId = JSON.stringify(createdResource.id);\n                $.ajax({\n                    'url': $.evo.io().options.ioUrl,\n                    'method': 'POST',\n                    'dataType': 'json',\n                    'data': 'io={\"name\":\"apple_pay_payment_authorized\", \"params\":[' + typeId + ']}',\n                }).done(function (result) {\n                    // Handle the transaction respone from backend.\n                    self.debugging.log('[> Payment Authorization Response]', {result, typeId});\n                    var status = result.transactionStatus;\n                    if (status === 'success' || status === 'pending') {\n                        session.completePayment({ status: window.ApplePaySession.STATUS_SUCCESS });\n\n                        // Append Payment Resource Id\n                        const hiddenInput = document.createElement('input');\n                        hiddenInput.setAttribute('type', 'hidden');\n                        hiddenInput.setAttribute('name', 'paymentData[resourceId]');\n                        hiddenInput.setAttribute('value', typeId);\n                        self.form.appendChild(hiddenInput);\n\n                        // Submitting the form\n                        self.form.removeEventListener('submit', self.initPaymentType);\n                        self.form.submit();\n                    } else {\n                        self.abortPaymentSession(session);\n                    }\n                }).fail(function (error) {\n                    self.errorHandler.show(error.statusText);\n                    self.abortPaymentSession(session);\n                });\n            })\n            .catch(function (error) {\n                self.debugging.log('[> Payment Authorization Error]', error);\n                self.errorHandler.show(error.message);\n                self.abortPaymentSession(session);\n            });\n    }\n\n    /**\n     * Handle Unsupported devices\n     */\n    unsupportedDevice() {\n        this.settings.submitButton.disabled = true;\n        this.settings.submitButton.ariaDisabled = true;\n        this.errorHandler.show(this.snippets.NOT_SUPPORTED);\n    }\n\n    /**\n     * abort current payment session.\n     * @param {ApplePaySession} session\n     */\n    abortPaymentSession(session) {\n        this.debugging.log('[> Abort Payment Session]', { status: window.ApplePaySession.STATUS_FAILURE });\n        session.completePayment({ status: window.ApplePaySession.STATUS_FAILURE });\n        session.abort();\n    }\n}\n","import ErrorHandler from \"../utils/errors\";\n\nexport default class UnzerPayment {\n    static PAYMENT_TYPES = {\n        ALIPAY: 'Alipay',\n        CARD: 'Card',\n        EPS: 'EPS',\n        FLEXIPAY_DIRECT: 'FlexiPay Direct',\n        HIRE_PURCHASE: 'Hire Purchase',\n        PAYPAL: 'Paypal',\n        INVOICE: 'Invoice',\n        INVOICE_FACTORING: 'Invoice Factoring',\n        INVOICE_GUARANTEED: 'Invoice Guaranteed',\n        SEPA: 'SEPA',\n        SEPA_GUARANTEED: 'SEPA (guaranteed)',\n        SOFORT: 'SOFORT',\n        GIROPAY: 'Giropay',\n        PRZELEWY24: 'Przelewy24',\n        IDEAL: 'iDEAL',\n        PREPAYMENT: 'Prepayment',\n        WECHAT_PAY: 'WeChat Pay',\n        PAYLATER_INVOICE: 'Paylater Invoice',\n        BANCONTACT: 'Bancontact',\n        PAYLATER_INSTALLMENT: 'Paylater Installment',\n        PAYLATER_DIRECT_DEBIT: 'Paylater Direct Debit',\n    };\n\n    /**\n     * Heidelpay Payment Class\n     *\n     * @param {string} pubKey Public Key\n     * @param {string} type Payment Type\n     * @param {PaymentSettings} settings\n     */\n    constructor(pubKey, type, settings) {\n        /** @type {PaymentSettings} */\n        this.settings = settings || {};\n\n        var options = {\n            locale: this.settings.locale || 'de-DE'\n        };\n\n        this.unzerInstance = new unzer(pubKey, options);\n        this.errorHandler = new ErrorHandler(this.settings.$errorContainer, this.settings.$errorMessage);\n\n        /** @type {?string} customerId */\n        this.customerId = settings.customerId || null;\n\n        /** @type {{createCustomer: Function, updateCustomer: Function}|null} customerResource */\n        this.customerResource = null;\n\n        /** @type {{createResource: Function}} paymentType */\n        this.paymentType = this.initPaymentType(type);\n\n        /** @type {HTMLElement} form Form in which the customer enters additional details */\n        this.form = this.settings.form || document.getElementById('form_payment_extra');\n\n        // Register Events\n        this.handleFormSubmit = this.handleFormSubmit.bind(this); // it's a trick! needed in order to overcome the remove event listener\n        this.form.addEventListener('submit', this.handleFormSubmit);\n\n        if (this.settings.autoSubmit) {\n            // this.form.dispatchEvent(new Event('submit')); // Causes endless redirects in some browsers like FF, so we call the callback directly...\n            this.handleFormSubmit(new Event('submit'));\n        }\n    }\n\n    /**\n     * Init Payment Type\n     *\n     * @param {string} type\n     * @returns {object} payment type\n     * @throws Error if there is an unkown payment type\n     */\n    initPaymentType(type) {\n        switch (type) {\n            case UnzerPayment.PAYMENT_TYPES.CARD:\n                return this.createCard();\n\n            case UnzerPayment.PAYMENT_TYPES.INVOICE:\n                return this.createInvoice();\n\n            case UnzerPayment.PAYMENT_TYPES.INVOICE_GUARANTEED:\n                return this.createInvoiceGuaranteed();\n\n            case UnzerPayment.PAYMENT_TYPES.INVOICE_FACTORING:\n                return this.createInvoiceFactoring();\n\n            case UnzerPayment.PAYMENT_TYPES.SEPA:\n                return this.createSepa();\n\n            case UnzerPayment.PAYMENT_TYPES.SEPA_GUARANTEED:\n                return this.createSepaGuaranteed();\n\n            case UnzerPayment.PAYMENT_TYPES.PAYPAL:\n                return this.createPaypal();\n\n            case UnzerPayment.PAYMENT_TYPES.SOFORT:\n                return this.createSofort();\n\n            case UnzerPayment.PAYMENT_TYPES.GIROPAY:\n                return this.createGiropay();\n\n            case UnzerPayment.PAYMENT_TYPES.PRZELEWY24:\n                return this.createPrzelewy24();\n\n            case UnzerPayment.PAYMENT_TYPES.IDEAL:\n                return this.createIdeal();\n\n            case UnzerPayment.PAYMENT_TYPES.PREPAYMENT:\n                return this.createPrepayment();\n\n            case UnzerPayment.PAYMENT_TYPES.EPS:\n                return this.createEPS();\n\n            case UnzerPayment.PAYMENT_TYPES.FLEXIPAY_DIRECT:\n                return this.createFlexiPayDirect();\n\n            case UnzerPayment.PAYMENT_TYPES.ALIPAY:\n                return this.createAlipay();\n\n            case UnzerPayment.PAYMENT_TYPES.WECHAT_PAY:\n                return this.createWeChatPay();\n\n            case UnzerPayment.PAYMENT_TYPES.HIRE_PURCHASE:\n                return this.createHirePurchase();\n\n            case UnzerPayment.PAYMENT_TYPES.PAYLATER_INVOICE:\n                return this.createPaylaterInvoice();\n\n            case UnzerPayment.PAYMENT_TYPES.BANCONTACT:\n                return this.createBancontact();\n\n            case UnzerPayment.PAYMENT_TYPES.PAYLATER_INSTALLMENT:\n                return this.createPaylaterInstallment();\n\n            case UnzerPayment.PAYMENT_TYPES.PAYLATER_DIRECT_DEBIT:\n                return this.createPaylaterDirectDebit();\n\n            default:\n                throw new Error('Unkown Payment Type: ' + type);\n        }\n    }\n\n    /**\n     * Handle the form submit\n     *\n     * @param {Event} event Submit Event\n     */\n    handleFormSubmit(event) {\n        var self = this;\n        event.preventDefault();\n\n        // Creating a Payment resource and (optional) Customer Resource\n        var resources = [this.paymentType.createResource()];\n\n        if (this.customerResource) {\n            resources.push(this.customerId ? this.customerResource.updateCustomer() : this.customerResource.createCustomer());\n        }\n\n        Promise.all(resources).then(function (result) {\n            // Append Payment Resource Id\n            var hiddenInput = document.createElement('input');\n            hiddenInput.setAttribute('type', 'hidden');\n            hiddenInput.setAttribute('name', 'paymentData[resourceId]');\n            hiddenInput.setAttribute('value', result[0].id);\n            self.form.appendChild(hiddenInput);\n\n            // Append Customer Id\n            if (result.length >= 2) {\n                var hiddenCstInput = document.createElement('input');\n                hiddenCstInput.setAttribute('type', 'hidden');\n                hiddenCstInput.setAttribute('name', 'paymentData[customerId]');\n                hiddenCstInput.setAttribute('value', result[1].id);\n                self.form.appendChild(hiddenCstInput);\n            }\n\n            // Submitting the form\n            self.form.removeEventListener('submit', self.handleFormSubmit);\n            self.form.submit();\n        })\n        .catch(function (error) {\n            self.errorHandler.show(error.message);\n        });\n    }\n\n    /**\n     * Handle Paylater Input Validation\n     * @param {Event} event\n     * @param {boolean} isValid\n     * @param {String} paymentMethodName\n     * @param {HTMLElement} continueButton\n     * @returns\n     */\n    onPaylaterInputValidation(event, isValid, paymentMethodName, continueButton) {\n        // console.log(paymentMethodName, { event, isValid, continueButton, 's360-valid': continueButton.getAttribute('data-s360-valid') });\n\n        if (isValid) {\n            // everything is still valid\n            if (continueButton.getAttribute('data-s360-valid') == 'all') {\n                continueButton.removeAttribute('disabled');\n                return;\n            }\n\n            // Customer is already valid -> everything is valid\n            if (continueButton.getAttribute('data-s360-valid') == 'customer') {\n                continueButton.setAttribute('data-s360-valid', 'all');\n                continueButton.removeAttribute('disabled');\n                return;\n            }\n\n            // mark payment method as valid\n            continueButton.setAttribute('data-s360-valid', paymentMethodName);\n            return;\n        }\n\n        continueButton.setAttribute('disabled', true);\n\n        // only invalidate if the paymentMethodName was valid before\n        if (continueButton.getAttribute('data-s360-valid') == paymentMethodName) {\n            continueButton.setAttribute('data-s360-valid', 0);\n        } else if (continueButton.getAttribute('data-s360-valid') == 'all') {\n            continueButton.setAttribute('data-s360-valid', 'customer');\n        }\n    }\n\n    /**\n     * Create (or update) customer resource.\n     *\n     * @param {?String} paymentTypeName\n     * @param {?String} multipleValidation\n     * @see https://docs.heidelpay.com/docs/customer-ui-integration\n     * @returns {{createCustomer: Function, updateCustomer: Function}} Customer Resource\n     */\n    createCustomer(paymentTypeName = null, multipleValidation = false) {\n        var Customer = this.settings.isB2B ? this.unzerInstance.B2BCustomer() : this.unzerInstance.Customer();\n        var customerObj = this.settings.customer || {};\n        var continueButton = this.settings.submitButton || document.getElementById(\"submit-button\");\n        let options = {\n            containerId: 'customer',\n            showInfoBox: false,\n            showHeader: false,\n            fields: ['name', 'birthdate']\n        };\n\n        if (paymentTypeName) {\n            options.paymentTypeName = paymentTypeName;\n        }\n\n        Customer.initFormFields(customerObj);\n        if (multipleValidation) {\n            continueButton.setAttribute('data-s360-valid', 0);\n\n            Customer.addEventListener('validate', (e) => {\n                // console.log('customer validate', e, continueButton, continueButton.getAttribute('data-s360-valid'));\n                continueButton.setAttribute('disabled', true);\n\n                if (e.success) {\n                    // everything is still valid\n                    if (continueButton.getAttribute('data-s360-valid') == 'all') {\n                        continueButton.removeAttribute('disabled');\n                        return;\n                    }\n\n                    // payment method is already valid -> everything is valid\n                    if (continueButton.getAttribute('data-s360-valid') == paymentTypeName) {\n                        continueButton.setAttribute('data-s360-valid', 'all');\n                        continueButton.removeAttribute('disabled');\n                        return;\n                    }\n\n                    continueButton.setAttribute('data-s360-valid', 'customer');\n                    return;\n                }\n\n                // only invalidate if the customer was valid before\n                if (continueButton.getAttribute('data-s360-valid') == 'customer') {\n                    continueButton.setAttribute('data-s360-valid', 0);\n                } else if (continueButton.getAttribute('data-s360-valid') == 'all') {\n                    continueButton.setAttribute('data-s360-valid', paymentTypeName);\n                }\n            });\n        } else {\n            Customer.addEventListener('validate', (e) => {\n                if (e.success) {\n                    continueButton.removeAttribute('disabled');\n                    return;\n                }\n\n                continueButton.setAttribute('disabled', true);\n            });\n        }\n\n        if (this.settings.isB2B) {\n            options.fields = ['companyInfo'];\n            // options = {containerId: 'customer'};\n        }\n\n        if (this.customerId) {\n            Customer.update(this.customerId, options);\n            return Customer;\n        }\n\n        Customer.create(options);\n\n        return Customer;\n    }\n\n    /**\n     * Hide form fields from unzer ui component because they are already filled by the shop\n     * @param {string} paymentMethodName\n     */\n    hideFormFields(paymentMethodName) {\n        const field = $('#customer');\n\n        field.find('.field').filter(\n            '.city, .company, :has(.country), .street, .zip, .firstname, .lastname'\n        ).hide();\n        field.find('.salutation-customer').hide();\n        field.find('.firstname, .lastname').parent('.fields').hide();\n        field.find('.unzerUI.divider-horizontal:eq(0)').hide();\n        field.find('.unzerUI.message.downArrow').hide();\n\n        if (paymentMethodName) {\n            field.find('.field').filter('.checkbox-billingAddress, .email').hide();\n            field.find('.field').filter(\n                '.billing-name, .billing-street, .billing-zip, .billing-city, :has(.billing-country)'\n            ).hide();\n            field.find('.unzerUI.form>.checkboxLabel').hide();\n            field.find('.unzerUI.form>.salutation-unzer-' + paymentMethodName + '-customer').hide();\n        }\n    }\n\n    /**\n     * Create Paylayter Installment Payment Type\n     *\n     * @see https://docs.unzer.com/payment-methods/unzer-installment-upl/accept-unzer-installment-ui-component/\n     * @returns {{createResource: Function}}\n     */\n    createPaylaterInstallment() {\n        this.customerResource = this.createCustomer('paylater-installment', true);\n        const continueButton = this.settings.submitButton || document.getElementById(\"submit-button\");\n        const paylaterInstallment = this.unzerInstance.PaylaterInstallment();\n\n        this.hideFormFields('paylater-installment');\n\n        paylaterInstallment.create({\n            containerId: 'paylater-installment',\n            amount: this.settings.amount,\n            currency: this.settings.currency,\n            country: this.settings.country\n        });\n\n        paylaterInstallment.addEventListener('paylaterInstallmentEvent', (e) => {\n            switch (e.currentStep) {\n                case 'plan-list':\n                    continueButton.setAttribute('disabled', true);\n                    break;\n\n                case 'plan-detail':\n                    continueButton.setAttribute('disabled', false);\n                    break;\n\n                default:\n                    break;\n            }\n\n            const isValid = e.action === 'validate' && e.success;\n            this.onPaylaterInputValidation(e, isValid, 'paylater-installment', continueButton);\n        });\n\n        return paylaterInstallment;\n    }\n\n    /**\n     * Create Paylayter Invoice Payment Type\n     *\n     * @see https://docs.unzer.com/payment-methods/unzer-invoice-upl/accept-unzer-invoice-upl-ui-component/\n     * @returns {{createResource: Function}}\n     */\n    createPaylaterInvoice() {\n        this.customerResource = this.createCustomer('paylater-invoice', true);\n        const continueButton = this.settings.submitButton || document.getElementById(\"submit-button\");\n        const paylaterInvoice = this.unzerInstance.PaylaterInvoice();\n\n        this.hideFormFields('paylater-invoice');\n\n        paylaterInvoice.create({\n            containerId: 'paylater-invoice',\n            customerType: this.settings.isB2B ? 'B2B' : 'B2C'\n        });\n\n        paylaterInvoice.addEventListener('change', (e) =>\n            this.onPaylaterInputValidation(\n                e,\n                e.success,\n                'paylater-invoice',\n                continueButton\n            )\n        );\n\n        return paylaterInvoice;\n    }\n\n    /**\n     * Create Paylayter Invoice Payment Type\n     *\n     * @see https://docs.unzer.com/payment-methods/direct-debit-secured/accept-direct-debit-secured-ui-component/\n     * @returns {{createResource: Function}}\n     */\n    createPaylaterDirectDebit() {\n        this.customerResource = this.createCustomer('paylater-direct-debit', true);\n        const continueButton = this.settings.submitButton || document.getElementById(\"submit-button\");\n        const paylaterDirectDebit = this.unzerInstance.PaylaterDirectDebit();\n\n        this.hideFormFields('paylater-direct-debit');\n\n        paylaterDirectDebit.create('paylater-direct-debit', {\n            containerId: 'paylater-direct-debit',\n            customerType: this.settings.isB2B ? 'B2B' : 'B2C'\n        });\n\n        paylaterDirectDebit.addEventListener('change', (e) =>\n            this.onPaylaterInputValidation(\n                e,\n                e.success,\n                'paylater-direct-debit',\n                continueButton\n            )\n        );\n\n        return paylaterDirectDebit;\n    }\n\n    /**\n     * Create Bancontact Payment Type\n     *\n     * @see https://docs.unzer.com/payment-methods/bancontact/accept-bancontact-ui-component/\n     * @returns {{createResource: Function}}\n     */\n    createBancontact() {\n        const bancontact = this.unzerInstance.Bancontact();\n        const styling = { fontSize: null, fontColor: null, fontFamily: null };\n\n        if (this.settings.styling) {\n            styling.fontColor = this.settings.styling.fontColor || null;\n            styling.fontSize = this.settings.styling.fontSize || null;\n            styling.fontFamily = this.settings.styling.fontFamily || null;\n        }\n\n        bancontact.create('holder', {\n            containerId: 'bancontact-holder',\n            fontSize: styling.fontSize,\n            fontColor: styling.fontColor,\n            fontFamily: styling.fontFamily\n        });\n\n        return bancontact;\n    }\n\n    /**\n     * Create a new Card Payment Type.\n     *\n     * @see https://docs.heidelpay.com/docs/credit-card-ui-integration\n     * @returns {{createResource: Function}} Card Payment Type\n     */\n    createCard() {\n        var Card = this.unzerInstance.Card();\n        var styling = {fontSize: null, fontColor: null, fontFamily: null};\n\n        if (this.settings.styling) {\n            styling.fontColor = this.settings.styling.fontColor || null;\n            styling.fontSize = this.settings.styling.fontSize || null;\n            styling.fontFamily = this.settings.styling.fontFamily || null;\n        }\n\n        Card.create('number', {\n            containerId: 'card-element-id-number',\n            onlyIframe: false,\n            fontSize: styling.fontSize,\n            fontColor: styling.fontColor,\n            fontFamily: styling.fontFamily\n        });\n        Card.create('expiry', {\n            containerId: 'card-element-id-expiry',\n            onlyIframe: false,\n            fontSize: styling.fontSize,\n            fontColor: styling.fontColor,\n            fontFamily: styling.fontFamily\n        });\n        Card.create('cvc', {\n            containerId: 'card-element-id-cvc',\n            onlyIframe: false,\n            fontSize: styling.fontSize,\n            fontColor: styling.fontColor,\n            // fontFamily: styling.fontFamily // messes with hidden font in firefox\n        });\n\n        // Enable pay button initially\n        var self = this;\n        var formFieldValid = {};\n\n        /** @type {HTMLElement} continueButton */\n        var continueButton = self.settings.submitButton || document.getElementById(\"submit-button\");\n        continueButton.setAttribute('disabled', true);\n\n        var eventHandlerCardInput = function (e) {\n            if (e.success) {\n                formFieldValid[e.type] = true;\n                self.errorHandler.hide();\n            }\n\n            if (e.error) {\n                formFieldValid[e.type] = false;\n                self.errorHandler.show(e.error);\n            }\n\n            if (formFieldValid.number && formFieldValid.expiry && formFieldValid.cvc) {\n                continueButton.removeAttribute('disabled');\n                return;\n            }\n\n            continueButton.setAttribute('disabled', true);\n        };\n\n        Card.addEventListener('change', eventHandlerCardInput);\n\n        return Card;\n    }\n\n    /**\n     * Create a new Invoice Payment Type.\n     *\n     * @see https://docs.heidelpay.com/docs/invoice-ui-integration\n     * @returns {{createResource: Function}} Invoice Payment Type\n     */\n    createInvoice() {\n        return this.unzerInstance.Invoice();\n    }\n\n    /**\n     * Create a new Invoice Guaranteed Payment Type.\n     *\n     * @see https://docs.heidelpay.com/docs/invoice-ui-integration\n     * @returns {{createResource: Function}} Invoice Payment Type\n     */\n    createInvoiceGuaranteed() {\n        this.customerResource = this.createCustomer();\n\n        return this.unzerInstance.InvoiceSecured();\n    }\n\n    /**\n     * Create a new Invoice Factoring Payment Type.\n     *\n     * @see https://docs.heidelpay.com/docs/invoice-ui-integration\n     * @returns {{createResource: Function}} Invoice Payment Type\n     */\n    createInvoiceFactoring() {\n        this.customerResource = this.createCustomer();\n\n        return this.unzerInstance.InvoiceSecured();\n    }\n\n    /**\n     * Create a new SEPA Direct Debit Payment Type.\n     *\n     * @see https://docs.heidelpay.com/docs/sepa-direct-debit-ui-integration\n     * @returns {{createResource: Function}} SEPA Direct Debit Payment Type\n     */\n    createSepa() {\n        var Sepa = this.unzerInstance.SepaDirectDebit();\n        Sepa.create('sepa-direct-debit', {\n            containerId: 'sepa-IBAN'\n        });\n\n        /** @type {HTMLElement} continueButton */\n        const continueButton = this.settings.submitButton || document.getElementById(\"submit-button\");\n        continueButton.setAttribute('disabled', true);\n\n        Sepa.addEventListener('change', (e) => {\n            if (e.success) {\n                continueButton.removeAttribute('disabled');\n                this.errorHandler.hide();\n                return;\n            }\n\n            continueButton.setAttribute('disabled', true);\n        });\n\n        return Sepa;\n    }\n\n    /**\n     * Create a new SEPA Direct Debit (guaranteed) Payment Type.\n     *\n     * @see https://docs.heidelpay.com/docs/sepa-direct-debit-ui-integration\n     * @returns {{createResource: Function}} SEPA Direct Debit (guaranteed) Payment Type\n     */\n    createSepaGuaranteed() {\n        var SepaGuaranteed = this.unzerInstance.SepaDirectDebitSecured();\n        SepaGuaranteed.create('sepa-direct-debit-guaranteed', {\n            containerId: 'sepa-guaranteed-IBAN'\n        });\n\n        /** @type {HTMLElement} continueButton */\n        const continueButton = this.settings.submitButton || document.getElementById(\"submit-button\");\n        continueButton.setAttribute('disabled', true);\n\n        SepaGuaranteed.addEventListener('change', (e) => {\n            if (e.success) {\n                continueButton.removeAttribute('disabled');\n                this.errorHandler.hide();\n                return;\n            }\n\n            continueButton.setAttribute('disabled', true);\n        });\n\n        this.customerResource = this.createCustomer();\n\n        return SepaGuaranteed;\n    }\n\n    /**\n     * Create a new PayPal Payment Type.\n     *\n     * @see https://docs.heidelpay.com/docs/paypal-ui-integration\n     * @returns {{createResource: Function}} Papal Payment Type\n     */\n   createPaypal() {\n        var Paypal = this.unzerInstance.Paypal();\n        Paypal.create('email', {\n            containerId: 'paypal-element-email'\n        });\n\n        return Paypal;\n    }\n\n    /**\n     * Create a new SOFORT Payment Type.\n     *\n     * @see https://docs.heidelpay.com/docs/redirect-ui-integration#sofort\n     * @returns {{createResource: Function}} Sofort Payment Type\n     */\n    createSofort() {\n        return this.unzerInstance.Sofort();\n    }\n\n    /**\n     * Create a new Giropay Payment Type.\n     *\n     * @see https://docs.heidelpay.com/docs/redirect-ui-integration#giropay\n     * @returns {{createResource: Function}} Giropay Payment Type\n     */\n    createGiropay () {\n        return this.unzerInstance.Giropay();\n    }\n\n    /**\n     * Create a new Przelewy24 Payment Type.\n     *\n     * @see https://docs.heidelpay.com/docs/redirect-ui-integration#przelewy24\n     * @returns {{createResource: Function}} Przelewy24 Payment Type\n     */\n    createPrzelewy24() {\n        return this.unzerInstance.Przelewy24();\n    }\n\n    /**\n     * Create a new iDEAL Payment Type.\n     *\n     * @see https://docs.heidelpay.com/docs/ideal-ui-integration\n     * @returns {{createResource: Function}} iDEAL Payment Type\n     */\n    createIdeal() {\n        var Ideal = this.unzerInstance.Ideal();\n\n        Ideal.create('ideal', {\n            containerId: 'ideal-element'\n        });\n\n        /** @type {HTMLElement} continueButton */\n        const continueButton = this.settings.submitButton || document.getElementById(\"submit-button\");\n        continueButton.setAttribute('disabled', true);\n\n        Ideal.addEventListener('change', (e) => {\n            if (e.value) {\n                continueButton.removeAttribute('disabled');\n                this.errorHandler.hide();\n                return;\n            }\n\n            continueButton.setAttribute('disabled', true);\n        });\n\n        return Ideal;\n    }\n\n    /**\n     * Create a new Prepayment Payment Type.\n     *\n     * @see https://docs.heidelpay.com/docs/prepayment-ui-integration\n     * @returns {{createResource: Function}} Prepayment Payment Type\n     */\n    createPrepayment() {\n        return this.unzerInstance.Prepayment();\n    }\n\n    /**\n     * Create a new EPS Payment Type.\n     *\n     * @see https://docs.heidelpay.com/docs/eps-ui-integration\n     * @returns {{createResource: Function}} EPS Payment Type\n     */\n    createEPS() {\n        var EPS = this.unzerInstance.EPS();\n\n        EPS.create('eps', {\n            containerId: 'eps-element'\n        });\n\n        return EPS;\n    }\n\n    /**\n     * Create a new FlexiPay Direct Payment Type.\n     *\n     * @see https://docs.heidelpay.com/docs/redirect-ui-integration#flexipay-direct\n     * @returns {{createResource: Function}} Alipay Payment Type\n     */\n    createFlexiPayDirect() {\n        return this.unzerInstance.FlexiPayDirect();\n    }\n\n    /**\n     * Create a new Alipay Payment Type.\n     *\n     * @see https://docs.heidelpay.com/docs/redirect-ui-integration#alipay\n     * @returns {{createResource: Function}} Alipay Payment Type\n     */\n    createAlipay() {\n        return this.unzerInstance.Alipay();\n    }\n\n    /**\n     * Create an new WeChat Pay Payment Type.\n     *\n     * @see https://docs.heidelpay.com/docs/redirect-ui-integration#wechat-pay\n     * @returns {{createResource: Function}} WeChat Pay Payment Type\n     */\n    createWeChatPay() {\n        return this.unzerInstance.Wechatpay();\n    }\n\n    /**\n     * Create a new Hire Purchase Payment Type.\n     *\n     * @see https:://docs.heidelpay.com/docs/hire-purchase-ui-integration\n     * @returns {{createResource: Function}} Hire Purchase Payment Type\n     */\n   createHirePurchase() {\n        var InstallmentSecured = this.unzerInstance.InstallmentSecured();\n        var self = this;\n        this.customerResource = this.createCustomer();\n\n        /** @type {HTMLElement} continueButton */\n        var continueButton = self.settings.submitButton || document.getElementById(\"submit-button\");\n        continueButton.setAttribute('style', 'display: none');\n        continueButton.setAttribute('disabled', true);\n\n        InstallmentSecured.create({\n            containerId: 'hire-purchase-element',\n            amount: this.settings.amount || null,\n            currency: this.settings.currency || null,\n            effectiveInterest: this.settings.effectiveInterest || null,\n            orderDate: this.settings.orderDate || null\n        }).then(function (data) {\n            // if successful, notify the user that the list of installments was fetched successfully\n            // in case you were using a loading element during the fetching process,\n            // you can remove it inside this callback function\n        })\n        .catch(function (response) {\n            // sent an error message to the user (fetching installment list failed)\n            var msg = '';\n            console.error(response.message);\n\n            response.error.details.forEach(function(err) {\n                console.error('API-Error: ' + err.code);\n                msg += err.customerMessage;\n            });\n\n            self.errorHandler.show(msg);\n        });\n\n\n        // Listen to UI events\n        InstallmentSecured.addEventListener('installmentSecuredEvent', function (e) {\n            if (e.action === 'validate') {\n                if (e.success) {\n                    continueButton.removeAttribute('disabled');\n                    return;\n                }\n\n                continueButton.setAttribute('disabled', true);\n            }\n\n            if (e.action === 'change-step') {\n                if (e.currentSteep === 'plan-list') {\n                    continueButton.setAttribute('style', 'display: none');\n                    continueButton.setAttribute('disabled', true);\n                    return;\n                }\n\n                continueButton.setAttribute('style', 'display: inline-block');\n            }\n        });\n\n        return InstallmentSecured;\n    }\n}\n","/**\n * Heidelpay Installment Modal Window Handler\n *\n * @param {string} modalSelector\n * @param {HTMLElement} btn Submit Trigger\n * @param {JQuery<HTMLElement>} $form\n */\nconst Installment = (modalSelector, btn, $form) => {\n    var modal = $(modalSelector);\n\n    btn.addEventListener('click', function () {\n        $form.trigger('submit');\n    });\n\n    $form.on('submit', function (e) {\n        if (!modal.is(':visible')) {\n            e.preventDefault();\n            modal.modal('show');\n            return false;\n        }\n\n        return true;\n    });\n};\n\nexport default Installment;","export default class Debugging {\n    constructor($container) {\n        this.$container = $container;\n        this.$log = null;\n\n        if (!window.UNZER_DEBUG) {\n            return;\n        }\n\n        this.createLogTemplate();\n    }\n\n    log(context, data = {}) {\n        if (!window.UNZER_DEBUG) {\n            return;\n        }\n\n        if (!this.$log) {\n            this.createLogTemplate();\n        }\n\n        this.$log.append(\n            '<li><strong>' + context + '</strong><pre>' + JSON.stringify(data,  null, '  ') +  '</pre></li>'\n        );\n    }\n\n    createLogTemplate() {\n        this.$container.append(\n            $('<div class=\"debug-log card card-body bg-light\"><ul class=\"list-unstyled\"></ul></div>')\n        );\n        this.$log = this.$container.find('.debug-log > ul');\n    }\n}\n","export default class ErrorHandler {\n    /**\n     * @param {JQuery<HTMLElement>|null} $wrapper Wrapper for Container to display error messages in\n     * @param {JQuery<HTMLElement>|null} $holder Container to display error messages in\n     */\n    constructor($wrapper, $holder) {\n        this.$wrapper = $wrapper || $('#error-container');\n        this.$holder = $holder || this.$wrapper.find('.alert');\n    }\n\n    /**\n     * Show Error message\n     * @param {String} message\n     */\n    show(message) {\n        this.$wrapper.show();\n        this.$holder.html(message);\n    }\n\n    /**\n     * Hide error message\n     */\n    hide() {\n        this.$wrapper.hide();\n        this.$holder.html();\n    }\n}\n","function _classCallCheck(instance, Constructor) {\n  if (!(instance instanceof Constructor)) {\n    throw new TypeError(\"Cannot call a class as a function\");\n  }\n}\n\nmodule.exports = _classCallCheck, module.exports.__esModule = true, module.exports[\"default\"] = module.exports;","function _defineProperties(target, props) {\n  for (var i = 0; i < props.length; i++) {\n    var descriptor = props[i];\n    descriptor.enumerable = descriptor.enumerable || false;\n    descriptor.configurable = true;\n    if (\"value\" in descriptor) descriptor.writable = true;\n    Object.defineProperty(target, descriptor.key, descriptor);\n  }\n}\n\nfunction _createClass(Constructor, protoProps, staticProps) {\n  if (protoProps) _defineProperties(Constructor.prototype, protoProps);\n  if (staticProps) _defineProperties(Constructor, staticProps);\n  Object.defineProperty(Constructor, \"prototype\", {\n    writable: false\n  });\n  return Constructor;\n}\n\nmodule.exports = _createClass, module.exports.__esModule = true, module.exports[\"default\"] = module.exports;","function _defineProperty(obj, key, value) {\n  if (key in obj) {\n    Object.defineProperty(obj, key, {\n      value: value,\n      enumerable: true,\n      configurable: true,\n      writable: true\n    });\n  } else {\n    obj[key] = value;\n  }\n\n  return obj;\n}\n\nmodule.exports = _defineProperty, module.exports.__esModule = true, module.exports[\"default\"] = module.exports;","function _interopRequireDefault(obj) {\n  return obj && obj.__esModule ? obj : {\n    \"default\": obj\n  };\n}\n\nmodule.exports = _interopRequireDefault, module.exports.__esModule = true, module.exports[\"default\"] = module.exports;"]}
\ No newline at end of file
diff --git a/frontend/src/js/app.js b/frontend/src/js/app.js
new file mode 100644
index 0000000..e8638d6
--- /dev/null
+++ b/frontend/src/js/app.js
@@ -0,0 +1,7 @@
+import ApplePay from './payments/applepay';
+import UnzerPayment from "./payments/general";
+import Installment from "./payments/instalment";
+
+window.HpPayment = UnzerPayment;
+window.HpInstalment = Installment;
+window.UnzerApplePay = ApplePay;
diff --git a/frontend/src/js/payments/applepay.js b/frontend/src/js/payments/applepay.js
new file mode 100644
index 0000000..c9f7dbe
--- /dev/null
+++ b/frontend/src/js/payments/applepay.js
@@ -0,0 +1,194 @@
+import ErrorHandler from "../utils/errors";
+import Debugging from "../utils/debugging";
+
+/** @type {ApplePaySnippets} */
+const ApplePaySnippetsDefaults = {
+    NOT_SUPPORTED: "This device does not support Apple Pay!",
+    CANCEL_BY_USER: "Canceled payment process by user!"
+};
+
+export default class ApplePay {
+    /**
+     * Similiar to the HeidelpayPayment class but slightly differently
+     * (apple pay works differently, so yeah, custom class it is :D)
+     *
+     * @class
+     * @param {String} pubKey
+     * @param {ApplePayPaymentRequest} applePayPaymentRequest
+     * @param {ApplePaySnippets} snippets
+     * @param {ApplePaySettings} settings
+     */
+    constructor(pubKey, applePayPaymentRequest, snippets, settings) {
+        /** @type {ApplePaySettings} */
+        this.settings = settings || {};
+
+        /** @type {ApplePaySnippets} */
+        this.snippets = Object.assign(ApplePaySnippetsDefaults, snippets);
+
+        var options = {
+            locale: this.settings.locale || 'de-DE'
+        };
+
+        /** @type {ApplePayPaymentRequest} */
+        this.applePayPaymentRequest = applePayPaymentRequest;
+        this.unzerInstance = new unzer(pubKey, options);
+        this.errorHandler = new ErrorHandler(this.settings.$errorContainer, this.settings.$errorMessage);
+        this.debugging = new Debugging($('.unzerUI'));
+        window.UNZER_DEBUG = !!this.unzerInstance._isSandbox || this.unzerInstance.config.hasSandboxKey; // Enable Debugging in sandbox mode
+
+        if (!window.ApplePaySession|| !window.ApplePaySession.canMakePayments()) {
+            this.unsupportedDevice();
+            return;
+        }
+
+        /** @type {HTMLElement} form Form in which the customer enters additional details */
+        this.form = this.settings.form || document.getElementById('form_payment_extra');
+
+        // Register Events
+        this.initPaymentType = this.initPaymentType.bind(this); // it's a trick! needed in order to overcome the remove event listener
+        this.form.addEventListener('submit', this.initPaymentType);
+        $('.apple-pay-button').on('click', this.initPaymentType.bind(this));
+    }
+
+    /**
+     * Init the payment type in this case means starting the apple pay session
+     * @param {Event} event
+     */
+    initPaymentType(event) {
+        event.preventDefault();
+
+        if (!window.ApplePaySession || !window.ApplePaySession.canMakePayments()) {
+            this.unsupportedDevice();
+            return;
+        }
+
+        // We adhere to Apple Pay version 6 to handle the payment request.
+        const session = new ApplePaySession(3, this.applePayPaymentRequest);
+        this.debugging.log('[> Init Payment Type]', {paymentRequest: this.applePayPaymentRequest});
+
+        session.onvalidatemerchant = (event) => {
+            this.merchantValidationCallback(event, session);
+        };
+
+        session.onpaymentauthorized = (event) => {
+            this.applePayAuthorizedCallback(event, session);
+        };
+
+        session.oncancel = (event) => {
+            this.debugging.log('[> Cancel]', {event});
+            this.errorHandler.show(this.snippets.CANCEL_BY_USER);
+        };
+
+        session.begin();
+    }
+
+    /**
+     * Call the merchant validation in the server-side integration (apple_pay_merchantvalidation)
+     * @param {Event} event
+     * @param {ApplePaySession} session
+     */
+    merchantValidationCallback(event, session) {
+        var validationUrl = JSON.stringify(event.validationURL);
+
+        this.debugging.log('[> Merchant Validation]', {event});
+
+        $.ajax({
+            'url': $.evo.io().options.ioUrl,
+            'method': 'POST',
+            'dataType': 'json',
+            'data': 'io={"name":"apple_pay_merchantvalidation", "params":[' + validationUrl + ']}',
+        }).done((validationResponse) => {
+            this.debugging.log('[> Merchant Validation Response]', validationResponse);
+
+            try {
+                session.completeMerchantValidation(validationResponse);
+            } catch (e) {
+                alert(e.message);
+            }
+        })
+        .fail((error) => {
+            this.debugging.log('[> Merchant Validation Error]', error);
+            this.errorHandler.show(JSON.stringify(error.statusText));
+            session.abort();
+        });
+    }
+
+    /**
+     * Create Apple Pay resource with unzer and save the resource id to charge it later.
+     *
+     * We do this here via AJAX instead of the validateAdditional method in the payment method to set the apple pay
+     * session state accordingly.
+     *
+     * @param {Event} event
+     * @param {ApplePaySession} session
+     */
+    applePayAuthorizedCallback(event, session) {
+        // Get payment data from event.
+        // "event.payment" also contains contact information, if they were set via Apple Pay.
+        var self = this;
+        var unzerApplePayInstance = this.unzerInstance.ApplePay();
+        var paymentData = event.payment.token.paymentData;
+
+        this.debugging.log('[> Payment Authorization]', {unzerApplePayInstance, event, paymentData});
+
+        // Create an Unzer instance with your public key
+        unzerApplePayInstance.createResource(paymentData)
+            .then(function (createdResource) {
+                // Hand over the type ID to your backend.
+                var typeId = JSON.stringify(createdResource.id);
+                $.ajax({
+                    'url': $.evo.io().options.ioUrl,
+                    'method': 'POST',
+                    'dataType': 'json',
+                    'data': 'io={"name":"apple_pay_payment_authorized", "params":[' + typeId + ']}',
+                }).done(function (result) {
+                    // Handle the transaction respone from backend.
+                    self.debugging.log('[> Payment Authorization Response]', {result, typeId});
+                    var status = result.transactionStatus;
+                    if (status === 'success' || status === 'pending') {
+                        session.completePayment({ status: window.ApplePaySession.STATUS_SUCCESS });
+
+                        // Append Payment Resource Id
+                        const hiddenInput = document.createElement('input');
+                        hiddenInput.setAttribute('type', 'hidden');
+                        hiddenInput.setAttribute('name', 'paymentData[resourceId]');
+                        hiddenInput.setAttribute('value', typeId);
+                        self.form.appendChild(hiddenInput);
+
+                        // Submitting the form
+                        self.form.removeEventListener('submit', self.initPaymentType);
+                        self.form.submit();
+                    } else {
+                        self.abortPaymentSession(session);
+                    }
+                }).fail(function (error) {
+                    self.errorHandler.show(error.statusText);
+                    self.abortPaymentSession(session);
+                });
+            })
+            .catch(function (error) {
+                self.debugging.log('[> Payment Authorization Error]', error);
+                self.errorHandler.show(error.message);
+                self.abortPaymentSession(session);
+            });
+    }
+
+    /**
+     * Handle Unsupported devices
+     */
+    unsupportedDevice() {
+        this.settings.submitButton.disabled = true;
+        this.settings.submitButton.ariaDisabled = true;
+        this.errorHandler.show(this.snippets.NOT_SUPPORTED);
+    }
+
+    /**
+     * abort current payment session.
+     * @param {ApplePaySession} session
+     */
+    abortPaymentSession(session) {
+        this.debugging.log('[> Abort Payment Session]', { status: window.ApplePaySession.STATUS_FAILURE });
+        session.completePayment({ status: window.ApplePaySession.STATUS_FAILURE });
+        session.abort();
+    }
+}
diff --git a/frontend/src/js/payments/general.js b/frontend/src/js/payments/general.js
new file mode 100644
index 0000000..7f6b920
--- /dev/null
+++ b/frontend/src/js/payments/general.js
@@ -0,0 +1,821 @@
+import ErrorHandler from "../utils/errors";
+
+export default class UnzerPayment {
+    static PAYMENT_TYPES = {
+        ALIPAY: 'Alipay',
+        CARD: 'Card',
+        EPS: 'EPS',
+        FLEXIPAY_DIRECT: 'FlexiPay Direct',
+        HIRE_PURCHASE: 'Hire Purchase',
+        PAYPAL: 'Paypal',
+        INVOICE: 'Invoice',
+        INVOICE_FACTORING: 'Invoice Factoring',
+        INVOICE_GUARANTEED: 'Invoice Guaranteed',
+        SEPA: 'SEPA',
+        SEPA_GUARANTEED: 'SEPA (guaranteed)',
+        SOFORT: 'SOFORT',
+        GIROPAY: 'Giropay',
+        PRZELEWY24: 'Przelewy24',
+        IDEAL: 'iDEAL',
+        PREPAYMENT: 'Prepayment',
+        WECHAT_PAY: 'WeChat Pay',
+        PAYLATER_INVOICE: 'Paylater Invoice',
+        BANCONTACT: 'Bancontact',
+        PAYLATER_INSTALLMENT: 'Paylater Installment',
+        PAYLATER_DIRECT_DEBIT: 'Paylater Direct Debit',
+    };
+
+    /**
+     * Heidelpay Payment Class
+     *
+     * @param {string} pubKey Public Key
+     * @param {string} type Payment Type
+     * @param {PaymentSettings} settings
+     */
+    constructor(pubKey, type, settings) {
+        /** @type {PaymentSettings} */
+        this.settings = settings || {};
+
+        var options = {
+            locale: this.settings.locale || 'de-DE'
+        };
+
+        this.unzerInstance = new unzer(pubKey, options);
+        this.errorHandler = new ErrorHandler(this.settings.$errorContainer, this.settings.$errorMessage);
+
+        /** @type {?string} customerId */
+        this.customerId = settings.customerId || null;
+
+        /** @type {{createCustomer: Function, updateCustomer: Function}|null} customerResource */
+        this.customerResource = null;
+
+        /** @type {{createResource: Function}} paymentType */
+        this.paymentType = this.initPaymentType(type);
+
+        /** @type {HTMLElement} form Form in which the customer enters additional details */
+        this.form = this.settings.form || document.getElementById('form_payment_extra');
+
+        // Register Events
+        this.handleFormSubmit = this.handleFormSubmit.bind(this); // it's a trick! needed in order to overcome the remove event listener
+        this.form.addEventListener('submit', this.handleFormSubmit);
+
+        if (this.settings.autoSubmit) {
+            // this.form.dispatchEvent(new Event('submit')); // Causes endless redirects in some browsers like FF, so we call the callback directly...
+            this.handleFormSubmit(new Event('submit'));
+        }
+    }
+
+    /**
+     * Init Payment Type
+     *
+     * @param {string} type
+     * @returns {object} payment type
+     * @throws Error if there is an unkown payment type
+     */
+    initPaymentType(type) {
+        switch (type) {
+            case UnzerPayment.PAYMENT_TYPES.CARD:
+                return this.createCard();
+
+            case UnzerPayment.PAYMENT_TYPES.INVOICE:
+                return this.createInvoice();
+
+            case UnzerPayment.PAYMENT_TYPES.INVOICE_GUARANTEED:
+                return this.createInvoiceGuaranteed();
+
+            case UnzerPayment.PAYMENT_TYPES.INVOICE_FACTORING:
+                return this.createInvoiceFactoring();
+
+            case UnzerPayment.PAYMENT_TYPES.SEPA:
+                return this.createSepa();
+
+            case UnzerPayment.PAYMENT_TYPES.SEPA_GUARANTEED:
+                return this.createSepaGuaranteed();
+
+            case UnzerPayment.PAYMENT_TYPES.PAYPAL:
+                return this.createPaypal();
+
+            case UnzerPayment.PAYMENT_TYPES.SOFORT:
+                return this.createSofort();
+
+            case UnzerPayment.PAYMENT_TYPES.GIROPAY:
+                return this.createGiropay();
+
+            case UnzerPayment.PAYMENT_TYPES.PRZELEWY24:
+                return this.createPrzelewy24();
+
+            case UnzerPayment.PAYMENT_TYPES.IDEAL:
+                return this.createIdeal();
+
+            case UnzerPayment.PAYMENT_TYPES.PREPAYMENT:
+                return this.createPrepayment();
+
+            case UnzerPayment.PAYMENT_TYPES.EPS:
+                return this.createEPS();
+
+            case UnzerPayment.PAYMENT_TYPES.FLEXIPAY_DIRECT:
+                return this.createFlexiPayDirect();
+
+            case UnzerPayment.PAYMENT_TYPES.ALIPAY:
+                return this.createAlipay();
+
+            case UnzerPayment.PAYMENT_TYPES.WECHAT_PAY:
+                return this.createWeChatPay();
+
+            case UnzerPayment.PAYMENT_TYPES.HIRE_PURCHASE:
+                return this.createHirePurchase();
+
+            case UnzerPayment.PAYMENT_TYPES.PAYLATER_INVOICE:
+                return this.createPaylaterInvoice();
+
+            case UnzerPayment.PAYMENT_TYPES.BANCONTACT:
+                return this.createBancontact();
+
+            case UnzerPayment.PAYMENT_TYPES.PAYLATER_INSTALLMENT:
+                return this.createPaylaterInstallment();
+
+            case UnzerPayment.PAYMENT_TYPES.PAYLATER_DIRECT_DEBIT:
+                return this.createPaylaterDirectDebit();
+
+            default:
+                throw new Error('Unkown Payment Type: ' + type);
+        }
+    }
+
+    /**
+     * Handle the form submit
+     *
+     * @param {Event} event Submit Event
+     */
+    handleFormSubmit(event) {
+        var self = this;
+        event.preventDefault();
+
+        // Creating a Payment resource and (optional) Customer Resource
+        var resources = [this.paymentType.createResource()];
+
+        if (this.customerResource) {
+            resources.push(this.customerId ? this.customerResource.updateCustomer() : this.customerResource.createCustomer());
+        }
+
+        Promise.all(resources).then(function (result) {
+            // Append Payment Resource Id
+            var hiddenInput = document.createElement('input');
+            hiddenInput.setAttribute('type', 'hidden');
+            hiddenInput.setAttribute('name', 'paymentData[resourceId]');
+            hiddenInput.setAttribute('value', result[0].id);
+            self.form.appendChild(hiddenInput);
+
+            // Append Customer Id
+            if (result.length >= 2) {
+                var hiddenCstInput = document.createElement('input');
+                hiddenCstInput.setAttribute('type', 'hidden');
+                hiddenCstInput.setAttribute('name', 'paymentData[customerId]');
+                hiddenCstInput.setAttribute('value', result[1].id);
+                self.form.appendChild(hiddenCstInput);
+            }
+
+            // Submitting the form
+            self.form.removeEventListener('submit', self.handleFormSubmit);
+            self.form.submit();
+        })
+        .catch(function (error) {
+            self.errorHandler.show(error.message);
+        });
+    }
+
+    /**
+     * Handle Paylater Input Validation
+     * @param {Event} event
+     * @param {boolean} isValid
+     * @param {String} paymentMethodName
+     * @param {HTMLElement} continueButton
+     * @returns
+     */
+    onPaylaterInputValidation(event, isValid, paymentMethodName, continueButton) {
+        // console.log(paymentMethodName, { event, isValid, continueButton, 's360-valid': continueButton.getAttribute('data-s360-valid') });
+
+        if (isValid) {
+            // everything is still valid
+            if (continueButton.getAttribute('data-s360-valid') == 'all') {
+                continueButton.removeAttribute('disabled');
+                return;
+            }
+
+            // Customer is already valid -> everything is valid
+            if (continueButton.getAttribute('data-s360-valid') == 'customer') {
+                continueButton.setAttribute('data-s360-valid', 'all');
+                continueButton.removeAttribute('disabled');
+                return;
+            }
+
+            // mark payment method as valid
+            continueButton.setAttribute('data-s360-valid', paymentMethodName);
+            return;
+        }
+
+        continueButton.setAttribute('disabled', true);
+
+        // only invalidate if the paymentMethodName was valid before
+        if (continueButton.getAttribute('data-s360-valid') == paymentMethodName) {
+            continueButton.setAttribute('data-s360-valid', 0);
+        } else if (continueButton.getAttribute('data-s360-valid') == 'all') {
+            continueButton.setAttribute('data-s360-valid', 'customer');
+        }
+    }
+
+    /**
+     * Create (or update) customer resource.
+     *
+     * @param {?String} paymentTypeName
+     * @param {?String} multipleValidation
+     * @see https://docs.heidelpay.com/docs/customer-ui-integration
+     * @returns {{createCustomer: Function, updateCustomer: Function}} Customer Resource
+     */
+    createCustomer(paymentTypeName = null, multipleValidation = false) {
+        var Customer = this.settings.isB2B ? this.unzerInstance.B2BCustomer() : this.unzerInstance.Customer();
+        var customerObj = this.settings.customer || {};
+        var continueButton = this.settings.submitButton || document.getElementById("submit-button");
+        let options = {
+            containerId: 'customer',
+            showInfoBox: false,
+            showHeader: false,
+            fields: ['name', 'birthdate']
+        };
+
+        if (paymentTypeName) {
+            options.paymentTypeName = paymentTypeName;
+        }
+
+        Customer.initFormFields(customerObj);
+        if (multipleValidation) {
+            continueButton.setAttribute('data-s360-valid', 0);
+
+            Customer.addEventListener('validate', (e) => {
+                // console.log('customer validate', e, continueButton, continueButton.getAttribute('data-s360-valid'));
+                continueButton.setAttribute('disabled', true);
+
+                if (e.success) {
+                    // everything is still valid
+                    if (continueButton.getAttribute('data-s360-valid') == 'all') {
+                        continueButton.removeAttribute('disabled');
+                        return;
+                    }
+
+                    // payment method is already valid -> everything is valid
+                    if (continueButton.getAttribute('data-s360-valid') == paymentTypeName) {
+                        continueButton.setAttribute('data-s360-valid', 'all');
+                        continueButton.removeAttribute('disabled');
+                        return;
+                    }
+
+                    continueButton.setAttribute('data-s360-valid', 'customer');
+                    return;
+                }
+
+                // only invalidate if the customer was valid before
+                if (continueButton.getAttribute('data-s360-valid') == 'customer') {
+                    continueButton.setAttribute('data-s360-valid', 0);
+                } else if (continueButton.getAttribute('data-s360-valid') == 'all') {
+                    continueButton.setAttribute('data-s360-valid', paymentTypeName);
+                }
+            });
+        } else {
+            Customer.addEventListener('validate', (e) => {
+                if (e.success) {
+                    continueButton.removeAttribute('disabled');
+                    return;
+                }
+
+                continueButton.setAttribute('disabled', true);
+            });
+        }
+
+        if (this.settings.isB2B) {
+            options.fields = ['companyInfo'];
+            // options = {containerId: 'customer'};
+        }
+
+        if (this.customerId) {
+            Customer.update(this.customerId, options);
+            return Customer;
+        }
+
+        Customer.create(options);
+
+        return Customer;
+    }
+
+    /**
+     * Hide form fields from unzer ui component because they are already filled by the shop
+     * @param {string} paymentMethodName
+     */
+    hideFormFields(paymentMethodName) {
+        const field = $('#customer');
+
+        field.find('.field').filter(
+            '.city, .company, :has(.country), .street, .zip, .firstname, .lastname'
+        ).hide();
+        field.find('.salutation-customer').hide();
+        field.find('.firstname, .lastname').parent('.fields').hide();
+        field.find('.unzerUI.divider-horizontal:eq(0)').hide();
+        field.find('.unzerUI.message.downArrow').hide();
+
+        if (paymentMethodName) {
+            field.find('.field').filter('.checkbox-billingAddress, .email').hide();
+            field.find('.field').filter(
+                '.billing-name, .billing-street, .billing-zip, .billing-city, :has(.billing-country)'
+            ).hide();
+            field.find('.unzerUI.form>.checkboxLabel').hide();
+            field.find('.unzerUI.form>.salutation-unzer-' + paymentMethodName + '-customer').hide();
+        }
+    }
+
+    /**
+     * Create Paylayter Installment Payment Type
+     *
+     * @see https://docs.unzer.com/payment-methods/unzer-installment-upl/accept-unzer-installment-ui-component/
+     * @returns {{createResource: Function}}
+     */
+    createPaylaterInstallment() {
+        this.customerResource = this.createCustomer('paylater-installment', true);
+        const continueButton = this.settings.submitButton || document.getElementById("submit-button");
+        const paylaterInstallment = this.unzerInstance.PaylaterInstallment();
+
+        this.hideFormFields('paylater-installment');
+
+        paylaterInstallment.create({
+            containerId: 'paylater-installment',
+            amount: this.settings.amount,
+            currency: this.settings.currency,
+            country: this.settings.country
+        });
+
+        paylaterInstallment.addEventListener('paylaterInstallmentEvent', (e) => {
+            switch (e.currentStep) {
+                case 'plan-list':
+                    continueButton.setAttribute('disabled', true);
+                    break;
+
+                case 'plan-detail':
+                    continueButton.setAttribute('disabled', false);
+                    break;
+
+                default:
+                    break;
+            }
+
+            const isValid = e.action === 'validate' && e.success;
+            this.onPaylaterInputValidation(e, isValid, 'paylater-installment', continueButton);
+        });
+
+        return paylaterInstallment;
+    }
+
+    /**
+     * Create Paylayter Invoice Payment Type
+     *
+     * @see https://docs.unzer.com/payment-methods/unzer-invoice-upl/accept-unzer-invoice-upl-ui-component/
+     * @returns {{createResource: Function}}
+     */
+    createPaylaterInvoice() {
+        this.customerResource = this.createCustomer('paylater-invoice', true);
+        const continueButton = this.settings.submitButton || document.getElementById("submit-button");
+        const paylaterInvoice = this.unzerInstance.PaylaterInvoice();
+
+        this.hideFormFields('paylater-invoice');
+
+        paylaterInvoice.create({
+            containerId: 'paylater-invoice',
+            customerType: this.settings.isB2B ? 'B2B' : 'B2C'
+        });
+
+        paylaterInvoice.addEventListener('change', (e) =>
+            this.onPaylaterInputValidation(
+                e,
+                e.success,
+                'paylater-invoice',
+                continueButton
+            )
+        );
+
+        return paylaterInvoice;
+    }
+
+    /**
+     * Create Paylayter Invoice Payment Type
+     *
+     * @see https://docs.unzer.com/payment-methods/direct-debit-secured/accept-direct-debit-secured-ui-component/
+     * @returns {{createResource: Function}}
+     */
+    createPaylaterDirectDebit() {
+        this.customerResource = this.createCustomer('paylater-direct-debit', true);
+        const continueButton = this.settings.submitButton || document.getElementById("submit-button");
+        const paylaterDirectDebit = this.unzerInstance.PaylaterDirectDebit();
+
+        this.hideFormFields('paylater-direct-debit');
+
+        paylaterDirectDebit.create('paylater-direct-debit', {
+            containerId: 'paylater-direct-debit',
+            customerType: this.settings.isB2B ? 'B2B' : 'B2C'
+        });
+
+        paylaterDirectDebit.addEventListener('change', (e) =>
+            this.onPaylaterInputValidation(
+                e,
+                e.success,
+                'paylater-direct-debit',
+                continueButton
+            )
+        );
+
+        return paylaterDirectDebit;
+    }
+
+    /**
+     * Create Bancontact Payment Type
+     *
+     * @see https://docs.unzer.com/payment-methods/bancontact/accept-bancontact-ui-component/
+     * @returns {{createResource: Function}}
+     */
+    createBancontact() {
+        const bancontact = this.unzerInstance.Bancontact();
+        const styling = { fontSize: null, fontColor: null, fontFamily: null };
+
+        if (this.settings.styling) {
+            styling.fontColor = this.settings.styling.fontColor || null;
+            styling.fontSize = this.settings.styling.fontSize || null;
+            styling.fontFamily = this.settings.styling.fontFamily || null;
+        }
+
+        bancontact.create('holder', {
+            containerId: 'bancontact-holder',
+            fontSize: styling.fontSize,
+            fontColor: styling.fontColor,
+            fontFamily: styling.fontFamily
+        });
+
+        return bancontact;
+    }
+
+    /**
+     * Create a new Card Payment Type.
+     *
+     * @see https://docs.heidelpay.com/docs/credit-card-ui-integration
+     * @returns {{createResource: Function}} Card Payment Type
+     */
+    createCard() {
+        var Card = this.unzerInstance.Card();
+        var styling = {fontSize: null, fontColor: null, fontFamily: null};
+
+        if (this.settings.styling) {
+            styling.fontColor = this.settings.styling.fontColor || null;
+            styling.fontSize = this.settings.styling.fontSize || null;
+            styling.fontFamily = this.settings.styling.fontFamily || null;
+        }
+
+        Card.create('number', {
+            containerId: 'card-element-id-number',
+            onlyIframe: false,
+            fontSize: styling.fontSize,
+            fontColor: styling.fontColor,
+            fontFamily: styling.fontFamily
+        });
+        Card.create('expiry', {
+            containerId: 'card-element-id-expiry',
+            onlyIframe: false,
+            fontSize: styling.fontSize,
+            fontColor: styling.fontColor,
+            fontFamily: styling.fontFamily
+        });
+        Card.create('cvc', {
+            containerId: 'card-element-id-cvc',
+            onlyIframe: false,
+            fontSize: styling.fontSize,
+            fontColor: styling.fontColor,
+            // fontFamily: styling.fontFamily // messes with hidden font in firefox
+        });
+
+        // Enable pay button initially
+        var self = this;
+        var formFieldValid = {};
+
+        /** @type {HTMLElement} continueButton */
+        var continueButton = self.settings.submitButton || document.getElementById("submit-button");
+        continueButton.setAttribute('disabled', true);
+
+        var eventHandlerCardInput = function (e) {
+            if (e.success) {
+                formFieldValid[e.type] = true;
+                self.errorHandler.hide();
+            }
+
+            if (e.error) {
+                formFieldValid[e.type] = false;
+                self.errorHandler.show(e.error);
+            }
+
+            if (formFieldValid.number && formFieldValid.expiry && formFieldValid.cvc) {
+                continueButton.removeAttribute('disabled');
+                return;
+            }
+
+            continueButton.setAttribute('disabled', true);
+        };
+
+        Card.addEventListener('change', eventHandlerCardInput);
+
+        return Card;
+    }
+
+    /**
+     * Create a new Invoice Payment Type.
+     *
+     * @see https://docs.heidelpay.com/docs/invoice-ui-integration
+     * @returns {{createResource: Function}} Invoice Payment Type
+     */
+    createInvoice() {
+        return this.unzerInstance.Invoice();
+    }
+
+    /**
+     * Create a new Invoice Guaranteed Payment Type.
+     *
+     * @see https://docs.heidelpay.com/docs/invoice-ui-integration
+     * @returns {{createResource: Function}} Invoice Payment Type
+     */
+    createInvoiceGuaranteed() {
+        this.customerResource = this.createCustomer();
+
+        return this.unzerInstance.InvoiceSecured();
+    }
+
+    /**
+     * Create a new Invoice Factoring Payment Type.
+     *
+     * @see https://docs.heidelpay.com/docs/invoice-ui-integration
+     * @returns {{createResource: Function}} Invoice Payment Type
+     */
+    createInvoiceFactoring() {
+        this.customerResource = this.createCustomer();
+
+        return this.unzerInstance.InvoiceSecured();
+    }
+
+    /**
+     * Create a new SEPA Direct Debit Payment Type.
+     *
+     * @see https://docs.heidelpay.com/docs/sepa-direct-debit-ui-integration
+     * @returns {{createResource: Function}} SEPA Direct Debit Payment Type
+     */
+    createSepa() {
+        var Sepa = this.unzerInstance.SepaDirectDebit();
+        Sepa.create('sepa-direct-debit', {
+            containerId: 'sepa-IBAN'
+        });
+
+        /** @type {HTMLElement} continueButton */
+        const continueButton = this.settings.submitButton || document.getElementById("submit-button");
+        continueButton.setAttribute('disabled', true);
+
+        Sepa.addEventListener('change', (e) => {
+            if (e.success) {
+                continueButton.removeAttribute('disabled');
+                this.errorHandler.hide();
+                return;
+            }
+
+            continueButton.setAttribute('disabled', true);
+        });
+
+        return Sepa;
+    }
+
+    /**
+     * Create a new SEPA Direct Debit (guaranteed) Payment Type.
+     *
+     * @see https://docs.heidelpay.com/docs/sepa-direct-debit-ui-integration
+     * @returns {{createResource: Function}} SEPA Direct Debit (guaranteed) Payment Type
+     */
+    createSepaGuaranteed() {
+        var SepaGuaranteed = this.unzerInstance.SepaDirectDebitSecured();
+        SepaGuaranteed.create('sepa-direct-debit-guaranteed', {
+            containerId: 'sepa-guaranteed-IBAN'
+        });
+
+        /** @type {HTMLElement} continueButton */
+        const continueButton = this.settings.submitButton || document.getElementById("submit-button");
+        continueButton.setAttribute('disabled', true);
+
+        SepaGuaranteed.addEventListener('change', (e) => {
+            if (e.success) {
+                continueButton.removeAttribute('disabled');
+                this.errorHandler.hide();
+                return;
+            }
+
+            continueButton.setAttribute('disabled', true);
+        });
+
+        this.customerResource = this.createCustomer();
+
+        return SepaGuaranteed;
+    }
+
+    /**
+     * Create a new PayPal Payment Type.
+     *
+     * @see https://docs.heidelpay.com/docs/paypal-ui-integration
+     * @returns {{createResource: Function}} Papal Payment Type
+     */
+   createPaypal() {
+        var Paypal = this.unzerInstance.Paypal();
+        Paypal.create('email', {
+            containerId: 'paypal-element-email'
+        });
+
+        return Paypal;
+    }
+
+    /**
+     * Create a new SOFORT Payment Type.
+     *
+     * @see https://docs.heidelpay.com/docs/redirect-ui-integration#sofort
+     * @returns {{createResource: Function}} Sofort Payment Type
+     */
+    createSofort() {
+        return this.unzerInstance.Sofort();
+    }
+
+    /**
+     * Create a new Giropay Payment Type.
+     *
+     * @see https://docs.heidelpay.com/docs/redirect-ui-integration#giropay
+     * @returns {{createResource: Function}} Giropay Payment Type
+     */
+    createGiropay () {
+        return this.unzerInstance.Giropay();
+    }
+
+    /**
+     * Create a new Przelewy24 Payment Type.
+     *
+     * @see https://docs.heidelpay.com/docs/redirect-ui-integration#przelewy24
+     * @returns {{createResource: Function}} Przelewy24 Payment Type
+     */
+    createPrzelewy24() {
+        return this.unzerInstance.Przelewy24();
+    }
+
+    /**
+     * Create a new iDEAL Payment Type.
+     *
+     * @see https://docs.heidelpay.com/docs/ideal-ui-integration
+     * @returns {{createResource: Function}} iDEAL Payment Type
+     */
+    createIdeal() {
+        var Ideal = this.unzerInstance.Ideal();
+
+        Ideal.create('ideal', {
+            containerId: 'ideal-element'
+        });
+
+        /** @type {HTMLElement} continueButton */
+        const continueButton = this.settings.submitButton || document.getElementById("submit-button");
+        continueButton.setAttribute('disabled', true);
+
+        Ideal.addEventListener('change', (e) => {
+            if (e.value) {
+                continueButton.removeAttribute('disabled');
+                this.errorHandler.hide();
+                return;
+            }
+
+            continueButton.setAttribute('disabled', true);
+        });
+
+        return Ideal;
+    }
+
+    /**
+     * Create a new Prepayment Payment Type.
+     *
+     * @see https://docs.heidelpay.com/docs/prepayment-ui-integration
+     * @returns {{createResource: Function}} Prepayment Payment Type
+     */
+    createPrepayment() {
+        return this.unzerInstance.Prepayment();
+    }
+
+    /**
+     * Create a new EPS Payment Type.
+     *
+     * @see https://docs.heidelpay.com/docs/eps-ui-integration
+     * @returns {{createResource: Function}} EPS Payment Type
+     */
+    createEPS() {
+        var EPS = this.unzerInstance.EPS();
+
+        EPS.create('eps', {
+            containerId: 'eps-element'
+        });
+
+        return EPS;
+    }
+
+    /**
+     * Create a new FlexiPay Direct Payment Type.
+     *
+     * @see https://docs.heidelpay.com/docs/redirect-ui-integration#flexipay-direct
+     * @returns {{createResource: Function}} Alipay Payment Type
+     */
+    createFlexiPayDirect() {
+        return this.unzerInstance.FlexiPayDirect();
+    }
+
+    /**
+     * Create a new Alipay Payment Type.
+     *
+     * @see https://docs.heidelpay.com/docs/redirect-ui-integration#alipay
+     * @returns {{createResource: Function}} Alipay Payment Type
+     */
+    createAlipay() {
+        return this.unzerInstance.Alipay();
+    }
+
+    /**
+     * Create an new WeChat Pay Payment Type.
+     *
+     * @see https://docs.heidelpay.com/docs/redirect-ui-integration#wechat-pay
+     * @returns {{createResource: Function}} WeChat Pay Payment Type
+     */
+    createWeChatPay() {
+        return this.unzerInstance.Wechatpay();
+    }
+
+    /**
+     * Create a new Hire Purchase Payment Type.
+     *
+     * @see https:://docs.heidelpay.com/docs/hire-purchase-ui-integration
+     * @returns {{createResource: Function}} Hire Purchase Payment Type
+     */
+   createHirePurchase() {
+        var InstallmentSecured = this.unzerInstance.InstallmentSecured();
+        var self = this;
+        this.customerResource = this.createCustomer();
+
+        /** @type {HTMLElement} continueButton */
+        var continueButton = self.settings.submitButton || document.getElementById("submit-button");
+        continueButton.setAttribute('style', 'display: none');
+        continueButton.setAttribute('disabled', true);
+
+        InstallmentSecured.create({
+            containerId: 'hire-purchase-element',
+            amount: this.settings.amount || null,
+            currency: this.settings.currency || null,
+            effectiveInterest: this.settings.effectiveInterest || null,
+            orderDate: this.settings.orderDate || null
+        }).then(function (data) {
+            // if successful, notify the user that the list of installments was fetched successfully
+            // in case you were using a loading element during the fetching process,
+            // you can remove it inside this callback function
+        })
+        .catch(function (response) {
+            // sent an error message to the user (fetching installment list failed)
+            var msg = '';
+            console.error(response.message);
+
+            response.error.details.forEach(function(err) {
+                console.error('API-Error: ' + err.code);
+                msg += err.customerMessage;
+            });
+
+            self.errorHandler.show(msg);
+        });
+
+
+        // Listen to UI events
+        InstallmentSecured.addEventListener('installmentSecuredEvent', function (e) {
+            if (e.action === 'validate') {
+                if (e.success) {
+                    continueButton.removeAttribute('disabled');
+                    return;
+                }
+
+                continueButton.setAttribute('disabled', true);
+            }
+
+            if (e.action === 'change-step') {
+                if (e.currentSteep === 'plan-list') {
+                    continueButton.setAttribute('style', 'display: none');
+                    continueButton.setAttribute('disabled', true);
+                    return;
+                }
+
+                continueButton.setAttribute('style', 'display: inline-block');
+            }
+        });
+
+        return InstallmentSecured;
+    }
+}
diff --git a/frontend/src/js/payments/instalment.js b/frontend/src/js/payments/instalment.js
new file mode 100644
index 0000000..7b11abb
--- /dev/null
+++ b/frontend/src/js/payments/instalment.js
@@ -0,0 +1,26 @@
+/**
+ * Heidelpay Installment Modal Window Handler
+ *
+ * @param {string} modalSelector
+ * @param {HTMLElement} btn Submit Trigger
+ * @param {JQuery<HTMLElement>} $form
+ */
+const Installment = (modalSelector, btn, $form) => {
+    var modal = $(modalSelector);
+
+    btn.addEventListener('click', function () {
+        $form.trigger('submit');
+    });
+
+    $form.on('submit', function (e) {
+        if (!modal.is(':visible')) {
+            e.preventDefault();
+            modal.modal('show');
+            return false;
+        }
+
+        return true;
+    });
+};
+
+export default Installment;
\ No newline at end of file
diff --git a/frontend/src/js/utils/debugging.js b/frontend/src/js/utils/debugging.js
new file mode 100644
index 0000000..26765a4
--- /dev/null
+++ b/frontend/src/js/utils/debugging.js
@@ -0,0 +1,33 @@
+export default class Debugging {
+    constructor($container) {
+        this.$container = $container;
+        this.$log = null;
+
+        if (!window.UNZER_DEBUG) {
+            return;
+        }
+
+        this.createLogTemplate();
+    }
+
+    log(context, data = {}) {
+        if (!window.UNZER_DEBUG) {
+            return;
+        }
+
+        if (!this.$log) {
+            this.createLogTemplate();
+        }
+
+        this.$log.append(
+            '<li><strong>' + context + '</strong><pre>' + JSON.stringify(data,  null, '  ') +  '</pre></li>'
+        );
+    }
+
+    createLogTemplate() {
+        this.$container.append(
+            $('<div class="debug-log card card-body bg-light"><ul class="list-unstyled"></ul></div>')
+        );
+        this.$log = this.$container.find('.debug-log > ul');
+    }
+}
diff --git a/frontend/src/js/utils/errors.js b/frontend/src/js/utils/errors.js
new file mode 100644
index 0000000..1ce06cd
--- /dev/null
+++ b/frontend/src/js/utils/errors.js
@@ -0,0 +1,27 @@
+export default class ErrorHandler {
+    /**
+     * @param {JQuery<HTMLElement>|null} $wrapper Wrapper for Container to display error messages in
+     * @param {JQuery<HTMLElement>|null} $holder Container to display error messages in
+     */
+    constructor($wrapper, $holder) {
+        this.$wrapper = $wrapper || $('#error-container');
+        this.$holder = $holder || this.$wrapper.find('.alert');
+    }
+
+    /**
+     * Show Error message
+     * @param {String} message
+     */
+    show(message) {
+        this.$wrapper.show();
+        this.$holder.html(message);
+    }
+
+    /**
+     * Hide error message
+     */
+    hide() {
+        this.$wrapper.hide();
+        this.$holder.html();
+    }
+}
diff --git a/frontend/src/js/utils/types.js b/frontend/src/js/utils/types.js
new file mode 100644
index 0000000..c7b7374
--- /dev/null
+++ b/frontend/src/js/utils/types.js
@@ -0,0 +1,46 @@
+// @ts-check
+
+/**
+ * @typedef {{
+ *  submitButton: HTMLElement|HTMLButtonElement|null,
+ *  form: ?HTMLElement,
+ *  locale: string
+ * }} ApplePaySettings
+ */
+
+/**
+ * @typedef {{
+ *  NOT_SUPPORTED: string
+ *  CANCEL_BY_USER: string
+ * }} ApplePaySnippets
+ */
+
+/**
+ * @typedef {{
+ *  $errorHolder: ?jQuery<HTMLElement>,
+ *  $form: ?jQuery<HTMLElement>,
+ *  submitButton: HTMLElement|HTMLButtonElement|null,
+ *  locale: ?string,
+ *  customerId: ?string,
+ *  customer: ?object,
+ *  autoSubmit: ?boolean,
+ *  amount: null|string|number,
+ *  currency: ?string,
+ *  effectiveInterest: null|string|number,
+ *  orderDate: ?string,
+ *  styling: {fontSize: string, fontFamily: string, fontColor: string},
+ *  isB2B: ?boolean,
+ *  county: ?string
+ * }} PaymentSettings
+ */
+
+/**
+ * @typedef {{
+ *  countryCode: string,
+ *  currencyCode: string,
+ *  supportedNetworks: string[],
+ *  merchantCapabilities: string[],
+ *  total: { label: string, amount: number },
+ *  lineItems: Array<{label: string, amount: number, type: string}>
+ * }} ApplePayPaymentRequest
+ */
\ No newline at end of file
diff --git a/frontend/src/scss/unzer.scss b/frontend/src/scss/unzer.scss
new file mode 100644
index 0000000..1281783
--- /dev/null
+++ b/frontend/src/scss/unzer.scss
@@ -0,0 +1,34 @@
+// Heidelpay UI Fixes
+.unzerUI {
+    .field {
+        position: relative;
+    }
+}
+
+// NOVA Fixes
+.label-slide .form-group:not(.exclude-from-label-slide):not(.checkbox) .unzerUI {
+    &.form {
+        label {
+            position: relative;
+            top: initial;
+            left: initial;
+            font-size: 1rem;
+            margin: 0 0 .28571429rem;
+            padding: 0;
+            transform: none;
+            line-height: 30px;
+            pointer-events: all;
+            text-overflow: initial;
+            white-space: normal;
+            overflow: initial;
+            max-width: none;
+        }
+    }
+
+    &.checkbox {
+        .box, label {
+            cursor: pointer;
+            padding-left: 2.5em;
+        }
+    }
+}
diff --git a/frontend/template/hire_purchase_direct_debit.tpl b/frontend/template/hire_purchase_direct_debit.tpl
index 972058d..12d2276 100644
--- a/frontend/template/hire_purchase_direct_debit.tpl
+++ b/frontend/template/hire_purchase_direct_debit.tpl
@@ -21,17 +21,17 @@ $(document).ready(function() {
 
                 <div class="row">
                     <div class="col-12 col-xs-12 col-md-6"><strong>{$hpInstalment.lang.totalPurchaseAmount}</strong></div>
-                    <div class="col-12 col-xs-12 col-md-6" id="total_purchase_amount">{$hpInstalment.totalPurchaseAmount|number_format:2} {$hpInstalment.currency}</div>
+                    <div class="col-12 col-xs-12 col-md-6" id="total_purchase_amount">{number_format($hpInstalment.totalPurchaseAmount|default:0, 2)} {$hpInstalment.currency}</div>
                 </div>
 
                 <div class="row">
                     <div class="col-12 col-xs-12 col-md-6"><strong>{$hpInstalment.lang.totalInterestAmount}</strong></div>
-                    <div class="col-12 col-xs-12 col-md-6" id="total_interest_amount">{$hpInstalment.totalInterestAmount|number_format:2} {$hpInstalment.currency}</div>
+                    <div class="col-12 col-xs-12 col-md-6" id="total_interest_amount">{number_format($hpInstalment.totalInterestAmount|default:0, 2)} {$hpInstalment.currency}</div>
                 </div>
 
                 <div class="row">
                     <div class="col-12 col-xs-12 col-md-6"><strong>{$hpInstalment.lang.totalAmount}</strong></div>
-                    <div class="col-12 col-xs-12 col-md-6" id="total_amount">{$hpInstalment.totalAmount|number_format:2} {$hpInstalment.currency}</div>
+                    <div class="col-12 col-xs-12 col-md-6" id="total_amount">{number_format($hpInstalment.totalAmount|default:0, 2)} {$hpInstalment.currency}</div>
                 </div>
                 <br/>
                 <p>
diff --git a/frontend/template/instalment_info.tpl b/frontend/template/instalment_info.tpl
new file mode 100644
index 0000000..1b144ad
--- /dev/null
+++ b/frontend/template/instalment_info.tpl
@@ -0,0 +1 @@
+<span class="unzer-instalment-info">{$info}</span>
\ No newline at end of file
diff --git a/frontend/template/partials/_threatMetrix.tpl b/frontend/template/partials/_threatMetrix.tpl
new file mode 100644
index 0000000..360849e
--- /dev/null
+++ b/frontend/template/partials/_threatMetrix.tpl
@@ -0,0 +1,12 @@
+{if $hpPayment.threatMetrixId}
+    <script type="text/javascript" async
+         src="https://h.online-metrix.net/fp/tags.js?org_id=363t8kgq&session_id={$hpPayment.threatMetrixId}">
+    </script>
+
+    <noscript>
+        <iframe
+            style="width: 100px; height: 100px; border: 0; position: absolute; top: -5000px;"
+            src="https://h.online-metrix.net/fp/tags?org_id=363t8kgq&session_id={$hpPayment.threatMetrixId}">
+        </iframe>
+    </noscript>
+{/if}
\ No newline at end of file
diff --git a/info.xml b/info.xml
index 670da30..e1da24a 100644
--- a/info.xml
+++ b/info.xml
@@ -6,7 +6,7 @@
     <URL>http://www.solution360.de</URL>
     <XMLVersion>100</XMLVersion>
     <MinShopVersion>5.0.0</MinShopVersion>
-    <Version>1.0.1</Version>
+    <Version>1.4.1</Version>
     <PluginID>s360_unzer_shop5</PluginID>
     <CreateDate>2020-10-27</CreateDate>
     <ExsID>eef84f33-97ff-4519-8e0f-6760ae06c51f</ExsID>
@@ -16,6 +16,12 @@
             <Customlink sort="10">
                 <Name><![CDATA[Bestellungen]]></Name>
             </Customlink>
+            <Customlink sort="15">
+                <Name><![CDATA[Apple Pay]]></Name>
+            </Customlink>
+            <Customlink sort="17">
+                <Name><![CDATA[Key Pairs]]></Name>
+            </Customlink>
             <Customlink sort="20">
                 <Name><![CDATA[Einstellungen]]></Name>
             </Customlink>
@@ -75,6 +81,55 @@
         </FrontendLink>
 
         <Locales>
+            <Variable>
+                <Name>s360_hp_cancel_payment_reference</Name>
+                <Description>
+                    <![CDATA[Die Referenz, die dem Kunden bei einer Stornierung/Rückerstattung auf seinem Kontoauszug angezeigt wird]]>
+                </Description>
+                <VariableLocalized iso="GER">
+                    <![CDATA[Stornierung der Bestellung %ORDER_ID% bei %SHOPNAME%]]>
+                </VariableLocalized>
+                <VariableLocalized iso="ENG">
+                    <![CDATA[Cancellation of the order %ORDER_ID% from %SHOPNAME%]]>
+                </VariableLocalized>
+            </Variable>
+            <Variable>
+                <Name>s360_hp_apple_pay_not_supported</Name>
+                <Description>
+                    <![CDATA[Fehler falls Apple Pay vom Gerät nicht unterstützt wird]]>
+                </Description>
+                <VariableLocalized iso="GER">
+                    <![CDATA[Apple Pay steht auf diesem Gerät nicht zur Verfügung!]]>
+                </VariableLocalized>
+                <VariableLocalized iso="ENG">
+                    <![CDATA[This device does not support Apple Pay!]]>
+                </VariableLocalized>
+            </Variable>
+            <Variable>
+                <Name>s360_hp_apple_pay_cancel_by_user</Name>
+                <Description>
+                    <![CDATA[Fehler falls Apple Pay vom Kunden abgebrochen wird]]>
+                </Description>
+                <VariableLocalized iso="GER">
+                    <![CDATA[Zahlungsvorgang wurde vom Benutzer abgebrochen!]]>
+                </VariableLocalized>
+                <VariableLocalized iso="ENG">
+                    <![CDATA[Canceled payment process by user!]]>
+                </VariableLocalized>
+            </Variable>
+
+            <Variable>
+                <Name>s360_hp_error_validating_merchant</Name>
+                <Description>
+                    <![CDATA[Fehler bei Apple Pay Händler Validierung]]>
+                </Description>
+                <VariableLocalized iso="GER">
+                    <![CDATA[Es ist ein Fehler bei der Validierung des Händlers aufgetreten. Bitte versuchen Sie es später noch einmal.]]>
+                </VariableLocalized>
+                <VariableLocalized iso="ENG">
+                    <![CDATA[There has been an error validating the merchant. Please try again later.]]>
+                </VariableLocalized>
+            </Variable>
             <Variable>
                 <Name>s360_hp_invalid_form_token</Name>
                 <Description>
@@ -237,6 +292,18 @@
                     <![CDATA[Your basket has changed. Please try again.]]>
                 </VariableLocalized>
             </Variable>
+            <Variable>
+                <Name>s360_hp_instalment_info</Name>
+                <Description>
+                    <![CDATA[Hinweistext, dass sich die Gesamtsumme von der zu zahlenden Summe unterscheidet aufgrund des gewählten Ratenzahlungsplans.]]>
+                </Description>
+                <VariableLocalized iso="GER">
+                    <![CDATA[<strong>Hinweis:</strong> Die angegebene Gesamtsumme unterscheidet sich von dem zu zahlenden Betrag. Den zu zahlenden Betrag entnehmen Sie bitte ihrem Ratenzahlungsplan.]]>
+                </VariableLocalized>
+                <VariableLocalized iso="ENG">
+                    <![CDATA[<strong>Note:</strong> The total amount shown differs from the amount to be paid. Please refer to your instalment plan for the amount to be paid.]]>
+                </VariableLocalized>
+            </Variable>
         </Locales>
 
         <PaymentMethod>
@@ -280,13 +347,13 @@
                 <TemplateFile>template/dummy.tpl</TemplateFile>
                 <AdditionalTemplateFile>template/sepa_form.tpl</AdditionalTemplateFile>
                 <MethodLanguage iso="GER">
-                    <Name><![CDATA[Unzer Lastschrift]]></Name>
-                    <ChargeName><![CDATA[Unzer Lastschrift]]></ChargeName>
+                    <Name><![CDATA[SEPA Lastschrift]]></Name>
+                    <ChargeName><![CDATA[SEPA Lastschrift]]></ChargeName>
                     <InfoText></InfoText>
                 </MethodLanguage>
                 <MethodLanguage iso="ENG">
-                    <Name><![CDATA[Unzer Direct Debit]]></Name>
-                    <ChargeName><![CDATA[Unzer Direct Debit]]></ChargeName>
+                    <Name><![CDATA[SEPA Direct Debit]]></Name>
+                    <ChargeName><![CDATA[SEPA Direct Debit]]></ChargeName>
                     <InfoText></InfoText>
                 </MethodLanguage>
             </Method>
@@ -305,13 +372,13 @@
                 <TemplateFile>template/dummy.tpl</TemplateFile>
                 <AdditionalTemplateFile>template/sepa_guaranteed_form.tpl</AdditionalTemplateFile>
                 <MethodLanguage iso="GER">
-                    <Name><![CDATA[Unzer Lastschrift]]></Name>
-                    <ChargeName><![CDATA[Unzer Lastschrift]]></ChargeName>
+                    <Name><![CDATA[(Veraltet) Lastschrift Gesichert]]></Name>
+                    <ChargeName><![CDATA[(Veraltet) Lastschrift Gesichert]]></ChargeName>
                     <InfoText></InfoText>
                 </MethodLanguage>
                 <MethodLanguage iso="ENG">
-                    <Name><![CDATA[Unzer Direct Debit]]></Name>
-                    <ChargeName><![CDATA[Unzer Direct Debit]]></ChargeName>
+                    <Name><![CDATA[(Deprecated) Direct Debit Secured]]></Name>
+                    <ChargeName><![CDATA[(Deprecated) Direct Debit Secured]]></ChargeName>
                     <InfoText></InfoText>
                 </MethodLanguage>
             </Method>
@@ -330,13 +397,13 @@
                 <TemplateFile>template/dummy.tpl</TemplateFile>
                 <AdditionalTemplateFile>template/invoice_form.tpl</AdditionalTemplateFile>
                 <MethodLanguage iso="GER">
-                    <Name><![CDATA[Unzer Rechnung]]></Name>
-                    <ChargeName><![CDATA[Unzer Rechnung]]></ChargeName>
+                    <Name><![CDATA[(Veraltet) Rechnungskauf]]></Name>
+                    <ChargeName><![CDATA[(Veraltet) Rechnungskauf]]></ChargeName>
                     <InfoText></InfoText>
                 </MethodLanguage>
                 <MethodLanguage iso="ENG">
-                    <Name><![CDATA[Unzer Invoice]]></Name>
-                    <ChargeName><![CDATA[Unzer Invoice]]></ChargeName>
+                    <Name><![CDATA[(Deprecated) Invoice]]></Name>
+                    <ChargeName><![CDATA[(Deprecated) Invoice]]></ChargeName>
                     <InfoText></InfoText>
                 </MethodLanguage>
             </Method>
@@ -355,13 +422,38 @@
                 <TemplateFile>template/dummy.tpl</TemplateFile>
                 <AdditionalTemplateFile>template/invoice_guaranteed_form.tpl</AdditionalTemplateFile>
                 <MethodLanguage iso="GER">
-                    <Name><![CDATA[Unzer Rechnung]]></Name>
-                    <ChargeName><![CDATA[Unzer Rechnung]]></ChargeName>
+                    <Name><![CDATA[(Veraltet) Rechnungskauf Gesichert]]></Name>
+                    <ChargeName><![CDATA[(Veraltet) Rechnungskauf Gesichert]]></ChargeName>
                     <InfoText></InfoText>
                 </MethodLanguage>
                 <MethodLanguage iso="ENG">
-                    <Name><![CDATA[Unzer Invoice]]></Name>
-                    <ChargeName><![CDATA[Unzer Invoice]]></ChargeName>
+                    <Name><![CDATA[(Deprecated) Invoice Secured]]></Name>
+                    <ChargeName><![CDATA[(Deprecated) Invoice Secured]]></ChargeName>
+                    <InfoText></InfoText>
+                </MethodLanguage>
+            </Method>
+            <Method>
+                <Name><![CDATA[Unzer Rechnung (Jetzt kaufen, Später bezahlen)]]></Name>
+                <Sort>0</Sort>
+                <SendMail>1</SendMail>
+                <Provider><![CDATA[Unzer]]></Provider>
+                <TSCode>INVOICE</TSCode>
+                <PreOrder>1</PreOrder>
+                <Soap>0</Soap>
+                <Curl>1</Curl>
+                <Sockets>0</Sockets>
+                <ClassFile>UnzerPaylaterInvoice.php</ClassFile>
+                <ClassName>UnzerPaylaterInvoice</ClassName>
+                <TemplateFile>template/dummy.tpl</TemplateFile>
+                <AdditionalTemplateFile>template/paylater_invoice_form.tpl</AdditionalTemplateFile>
+                <MethodLanguage iso="GER">
+                    <Name><![CDATA[Rechnungskauf]]></Name>
+                    <ChargeName><![CDATA[Rechnungskauf]]></ChargeName>
+                    <InfoText></InfoText>
+                </MethodLanguage>
+                <MethodLanguage iso="ENG">
+                    <Name><![CDATA[Invoice]]></Name>
+                    <ChargeName><![CDATA[Invoice]]></ChargeName>
                     <InfoText></InfoText>
                 </MethodLanguage>
             </Method>
@@ -672,6 +764,106 @@
                     <ValueName>effectiveInterest</ValueName>
                 </Setting>
             </Method>
+            <Method>
+                <Name><![CDATA[Unzer Apple Pay]]></Name>
+                <Sort>10</Sort>
+                <SendMail>1</SendMail>
+                <Provider><![CDATA[Unzer]]></Provider>
+                <TSCode>OTHER</TSCode>
+                <PreOrder>0</PreOrder>
+                <Soap>0</Soap>
+                <Curl>1</Curl>
+                <Sockets>0</Sockets>
+                <ClassFile>UnzerApplePay.php</ClassFile>
+                <ClassName>UnzerApplePay</ClassName>
+                <TemplateFile>template/dummy.tpl</TemplateFile>
+                <AdditionalTemplateFile>template/applepay.tpl</AdditionalTemplateFile>
+                <MethodLanguage iso="GER">
+                    <Name><![CDATA[Apple Pay]]></Name>
+                    <ChargeName><![CDATA[Apple Pay]]></ChargeName>
+                    <InfoText></InfoText>
+                </MethodLanguage>
+                <MethodLanguage iso="ENG">
+                    <Name><![CDATA[Apple Pay]]></Name>
+                    <ChargeName><![CDATA[Apple Pay]]></ChargeName>
+                    <InfoText></InfoText>
+                </MethodLanguage>
+            </Method>
+            <Method>
+                <Name><![CDATA[Unzer Bancontact]]></Name>
+                <Sort>20</Sort>
+                <SendMail>1</SendMail>
+                <Provider><![CDATA[Unzer]]></Provider>
+                <TSCode>OTHER</TSCode>
+                <PreOrder>0</PreOrder>
+                <Soap>0</Soap>
+                <Curl>1</Curl>
+                <Sockets>0</Sockets>
+                <ClassFile>UnzerBancontact.php</ClassFile>
+                <ClassName>UnzerBancontact</ClassName>
+                <TemplateFile>template/dummy.tpl</TemplateFile>
+                <AdditionalTemplateFile>template/bancontact_form.tpl</AdditionalTemplateFile>
+                <MethodLanguage iso="GER">
+                    <Name><![CDATA[Unzer Bancontact]]></Name>
+                    <ChargeName><![CDATA[Unzer Bancontact]]></ChargeName>
+                    <InfoText></InfoText>
+                </MethodLanguage>
+                <MethodLanguage iso="ENG">
+                    <Name><![CDATA[Unzer Bancontact]]></Name>
+                    <ChargeName><![CDATA[Unzer Bancontact]]></ChargeName>
+                    <InfoText></InfoText>
+                </MethodLanguage>
+            </Method>
+            <Method>
+                <Name><![CDATA[Unzer Ratenzahlung (Paylater)]]></Name>
+                <Sort>30</Sort>
+                <SendMail>1</SendMail>
+                <Provider><![CDATA[Unzer]]></Provider>
+                <TSCode>OTHER</TSCode>
+                <PreOrder>1</PreOrder>
+                <Soap>0</Soap>
+                <Curl>1</Curl>
+                <Sockets>0</Sockets>
+                <ClassFile>UnzerPaylaterInstallment.php</ClassFile>
+                <ClassName>UnzerPaylaterInstallment</ClassName>
+                <TemplateFile>template/dummy.tpl</TemplateFile>
+                <AdditionalTemplateFile>template/paylater_installment_form.tpl</AdditionalTemplateFile>
+                <MethodLanguage iso="GER">
+                    <Name><![CDATA[Ratenkauf]]></Name>
+                    <ChargeName><![CDATA[Ratenkauf]]></ChargeName>
+                    <InfoText></InfoText>
+                </MethodLanguage>
+                <MethodLanguage iso="ENG">
+                    <Name><![CDATA[Installment]]></Name>
+                    <ChargeName><![CDATA[Installment]]></ChargeName>
+                    <InfoText></InfoText>
+                </MethodLanguage>
+            </Method>
+            <Method>
+                <Name><![CDATA[Unzer Lastschrift (Paylater)]]></Name>
+                <Sort>40</Sort>
+                <SendMail>1</SendMail>
+                <Provider><![CDATA[Unzer]]></Provider>
+                <TSCode>OTHER</TSCode>
+                <PreOrder>1</PreOrder>
+                <Soap>0</Soap>
+                <Curl>1</Curl>
+                <Sockets>0</Sockets>
+                <ClassFile>UnzerPaylaterDirectDebit.php</ClassFile>
+                <ClassName>UnzerPaylaterDirectDebit</ClassName>
+                <TemplateFile>template/dummy.tpl</TemplateFile>
+                <AdditionalTemplateFile>template/paylater_direct_debit_form.tpl</AdditionalTemplateFile>
+                <MethodLanguage iso="GER">
+                    <Name><![CDATA[Lastschrift]]></Name>
+                    <ChargeName><![CDATA[Lastschrift]]></ChargeName>
+                    <InfoText></InfoText>
+                </MethodLanguage>
+                <MethodLanguage iso="ENG">
+                    <Name><![CDATA[Direct Debit]]></Name>
+                    <ChargeName><![CDATA[Direct Debit]]></ChargeName>
+                    <InfoText></InfoText>
+                </MethodLanguage>
+            </Method>
         </PaymentMethod>
     </Install>
 </jtlshopplugin>
\ No newline at end of file
diff --git a/locale/de-DE/base.mo b/locale/de-DE/base.mo
index 9d94f5a..9b13204 100644
Binary files a/locale/de-DE/base.mo and b/locale/de-DE/base.mo differ
diff --git a/locale/de-DE/base.po b/locale/de-DE/base.po
index a39be70..8229ece 100644
--- a/locale/de-DE/base.po
+++ b/locale/de-DE/base.po
@@ -8,22 +8,28 @@ msgid "Unzer Kreditkarte"
 msgstr "Unzer Kreditkarte"
 
 msgid "Unzer SEPA-Lastschrift"
-msgstr "Unzer Lastschrift"
+msgstr "Unzer SEPA Lastschrift"
 
 msgid "Unzer Lastschrift"
-msgstr "Unzer Lastschrift"
+msgstr "Unzer SEPA Lastschrift"
 
 msgid "Unzer SEPA-Lastschrift (guaranteed)"
-msgstr "Unzer Lastschrift (secured)"
+msgstr "(Veraltet) Unzer Direct Debit (Gesichert)"
 
 msgid "Unzer Lastschrift (secured)"
-msgstr "Unzer Lastschrift (secured)"
+msgstr "(Veraltet) Unzer Direct Debit (Gesichert)"
+
+msgid "Unzer Lastschrift (Paylater)"
+msgstr "Unzer Lastschrift"
 
 msgid "Unzer Rechnung"
-msgstr "Unzer Rechnung"
+msgstr "(Veraltet) Unzer Rechnungskauf"
 
 msgid "Unzer Rechnung (guaranteed)"
-msgstr "Unzer Rechnung (secured)"
+msgstr "(Veraltet) Unzer Rechnungskauf Gesichert"
+
+msgid "Unzer Rechnung (secured)"
+msgstr "(Veraltet) Unzer Rechnungskauf Gesichert"
 
 msgid "Unzer Fakturierung von Rechnungen"
 msgstr "Unzer Fakturierung von Rechnungen"
@@ -68,6 +74,15 @@ msgid "Unzer FlexiPay Installment (Hire Purchase)"
 msgstr "Unzer FlexiPay Instalment (Hire Purchase)"
 
 msgid "Unzer Instalment"
+msgstr "(Veraltet) Unzer Ratenkauf"
+
+msgid "Unzer Ratenkauf"
+msgstr "(Veraltet) Unzer Ratenkauf"
+
+msgid "Unzer Rechnung (Jetzt kaufen, Später bezahlen)"
+msgstr "Unzer Rechnungskauf"
+
+msgid "Unzer Ratenzahlung (Paylater)"
 msgstr "Unzer Ratenkauf"
 
 msgid "hpError"
@@ -167,19 +182,19 @@ msgid "hpPaymentmethodCard"
 msgstr "Kreditkarte"
 
 msgid "hpPaymentmethodSEPA"
-msgstr "Lastschrift"
+msgstr "SEPA Lastschrift"
 
 msgid "hpPaymentmethodSEPAGuaranteed"
-msgstr "Lastschrift (secured)"
+msgstr "(Veraltet) Unzer Direct Debit (Gesichert)"
 
 msgid "hpPaymentmethodInvoice"
-msgstr "Rechnung"
+msgstr "(Veraltet) Rechnung"
 
 msgid "hpPaymentmethodInvoiceGuaranteed"
-msgstr "Rechnung (secured)"
+msgstr "(Veraltet) Rechnung (secured)"
 
 msgid "hpPaymentmethodInvoiceFactoring"
-msgstr "Rechnungskauf"
+msgstr "(Veraltet) Rechnungskauf"
 
 msgid "hpPaymentmethodPayPal"
 msgstr "PayPal"
@@ -209,11 +224,14 @@ msgid "hpPaymentmethodiDEAL"
 msgstr "iDEAL"
 
 msgid "hpPaymentmethodHirePurchaseDirectDebit"
-msgstr "Ratenkauf"
+msgstr "(Veraltet) Ratenkauf"
 
 msgid "hpOpenInPortal"
 msgstr "Bestellung im Insight-Portal anzeigen"
 
+msgid "hpOpenInPaylaterPortal"
+msgstr "Im Unzer Pay Later - Merchant Portal anzeigen"
+
 msgid "hpDelivieryAddress"
 msgstr "Lieferadresse"
 
@@ -398,4 +416,141 @@ msgid "hpPaymentMethodDuringCheckoutNotification"
 msgstr "Die Zahlungsart \"%s\" ist vor Abschluss der Bestellung nicht verwendbar."
 
 msgid "hpPaymentMethodNotConfiguredNotification"
-msgstr "Die Zahlungsart \"%s\" ist nicht konfiguriert!"
\ No newline at end of file
+msgstr "Die Zahlungsart \"%s\" ist nicht konfiguriert!"
+
+msgid "hpWarningWebhookUrlChanged"
+msgstr "Die URL der Unzer Webhook-Verarbeitung hat sich geändert, dadurch kann das Plugin die Zahlungseingänge nicht mehr richtig verarbeiten. Schaue in die <a href=\"https://redirect.solution360.de/?r=docsunzerjtl5#Warum-erhalte-ich-die-Nachricht,-dass-sich-die-URL-des-Webhook-oder-des-Workflows-ge%C3%A4ndert-hat?\" target=\"_blank\">Dokumentation</a>, um zu erfahren wie der Fehler behoben werden kann."
+
+msgid "hpWarningSyncWorkflowUrlChanged"
+msgstr "Die URL der Unzer WaWi Workflow-Verarbeitung hat sich geändert, dadurch kann das Plugin Rechnungen nicht mehr richtig aktivieren. Schaue in die <a href=\"https://redirect.solution360.de/?r=docsunzerjtl5#Warum-erhalte-ich-die-Nachricht,-dass-sich-die-URL-des-Webhook-oder-des-Workflows-ge%C3%A4ndert-hat?\" target=\"_blank\">Dokumentation</a>, um zu erfahren wie der Fehler behoben werden kann."
+
+msgid "hpApplePayRefreshCert"
+msgstr "Erneuern"
+
+msgid "hpApplePayDownloadCert"
+msgstr "CSR herunterladen"
+
+msgid "hpApplePayUploadCert"
+msgstr "Zertifikat hochladen"
+
+msgid "hpApplePayUpload"
+msgstr "Auswählen"
+
+msgid "hpApplePayPaymentGeneral"
+msgstr "Allgemein"
+
+msgid "hpApplePayPaymentGeneralMerchantId"
+msgstr "Händlerkennung"
+
+msgid "hpApplePayPaymentGeneralMerchantIdHelp"
+msgstr "Die Händlerkennung (Merchant Identifier) welche im Apple Developer Account erstellt wurde."
+
+msgid "hpApplePayPaymentGeneralMerchantDomain"
+msgstr "Händler/Shop-URL"
+
+msgid "hpApplePayPaymentGeneralMerchantDomainHelp"
+msgstr "Die Händler/Shop-URL welche im Apple Developer Account für die Händlerkennung hinterlegt wurde."
+
+msgid "hpApplePayPaymentProcessingCertificate"
+msgstr "Payment Processing Zertifikat"
+
+msgid "hpApplePayPaymentProcessingCertificateCSR"
+msgstr "Certificate Signing Request (CSR)"
+
+msgid "hpApplePayPaymentProcessingCertificateCSRHelp"
+msgstr "Die Certificate Signing Request (CSR) Datei zum erstellte des Apple Pay Payment Processing Zertifikat."
+
+msgid "hpApplePayPaymentProcessingCertificateApple"
+msgstr "Apple Pay Zertifikat"
+
+msgid "hpApplePayPaymentProcessingCertificateAppleHelp"
+msgstr "Das von Apple erstellte Payment Processing Zertifikat."
+
+msgid "hpApplePayMerchantIdentityCertificate"
+msgstr "Merchant Identity Zertifikat"
+
+msgid "hpApplePayMerchantIdentityCertificateCSR"
+msgstr "Certificate Signing Request (CSR)"
+
+msgid "hpApplePayMerchantIdentityCertificateCSRHelp"
+msgstr "Die Certificate Signing Request (CSR) Datei zum erstellte des Apple Pay Merchant Identity Zertifikat."
+
+msgid "hpApplePayMerchantIdentityCertificateApple"
+msgstr "Apple Pay Zertifikat"
+
+msgid "hpApplePayMerchantIdentityCertificateAppleHelp"
+msgstr "Das von Apple erstellte Merchant Identity Zertifikat."
+
+msgid "hpApplePayUnzerIDs"
+msgstr "Unzer Payment Processing Zertifikat IDs"
+
+msgid "hpApplePayUpdateCert"
+msgstr "Zertifikat aktivieren"
+
+msgid "CERTIFICATE_TRANSFORMATION_ERROR"
+msgstr "Zertifikat konnte nicht in Text konvertiert werden"
+
+msgid "ERROR_ID_LOAD_ERROR"
+msgstr "Zertifikat konnte nicht geladen werden. Bitte überprüfen Sie, ob das Zertifikat gültig ist."
+
+msgid "hpSettingsActive"
+msgstr "aktiv"
+
+msgid "hpSettingsAddIncomingPayments"
+msgstr "Zahlungseingänge automatisch setzen"
+
+msgid "hpSettingsAddIncomingPaymentsHelp"
+msgstr "Steuert, ob das Plugin automatisch Zahlungseingänge für die JTL-Wawi setzt.<br/>Deaktivieren Sie diese Option nur, wenn Sie die Zahlungseingänge auf andere Art in der JTL-Wawi setzen. <em>(Zum Beispiel per Zahlungsabgleich oder manuell.)</em>"
+
+msgid "hpDeprecationPaymentMethodTitle"
+msgstr "ABSCHAFFUNG: %s"
+
+msgid "hpDeprecationInvoiceNotice"
+msgstr ""
+"Sie verwenden die Zahlungsmethode `%s`. Beachten Sie, dass diese Methode von Unzer abgeschafft wird. Sie wird derzeit noch unterstützt, aber es sind keine weiteren Entwicklungen dafür geplant.\n"
+"\n"
+"Der Ersatz für diese Zahlart ist die neue Zahlart `Unzer Rechnung (Jetzt kaufen, später bezahlen)`.\n"
+"\n"
+"Wenn Sie migrieren möchten, wenden Sie sich bitte an Ihren Ansprechpartner bei Unzer!"
+
+msgid "Key Pairs"
+msgstr "Schlüsselpaare"
+
+msgid "hpKeyPairEdit"
+msgstr "Schlüsselpaar bearbeiten"
+
+msgid "hpKeypairIsB2B"
+msgstr "B2B"
+
+msgid "hpKeypairIsB2BHelp"
+msgstr "Gibt an, ob das Schlüsselpaar nur für B2B Kunden benutzt werden soll."
+
+msgid "hpKeypairCurrencyHelp"
+msgstr "Gibt an für welche Währung das Schlüsselpaar verwendet werden soll."
+
+msgid "hpKeypairPaymentMethodsHelp"
+msgstr "Gibt an für welche Zahlungsart das Schlüsselpaar verwendet werden soll."
+
+msgid "hpSettingsPqSelectorInstalmentInfo"
+msgstr "PQ-Selector für den Ratenzahlungshinweis auf Bestellbestätigungsseite"
+
+msgid "hpSettingsPqSelectorInstalmentInfoHelp"
+msgstr "Der PHP-Query-Selektor für das Einhängen des Ratenzahlungshinweis auf der Bestellbestätigungsseite"
+
+msgid "hpSettingsPqMethodInstalmentInfo"
+msgstr "PQ-Einfügemethode für den Ratenzahlungshinweis auf Bestellbestätigungsseite"
+
+msgid "hpSettingsPqMethodInstalmentInfoHelp"
+msgstr "Die PHP-Query-Einfügemethode für das Einhängen des Ratenzahlungshinweis auf der Bestellbestätigungsseite"
+
+msgid "hpPaymentReference"
+msgstr "Zahlungsreferenz"
+
+msgid "paylater-installment"
+msgstr "Ratenkauf"
+
+msgid "paylater-invoice"
+msgstr "Rechnungskauf"
+
+msgid "paylater-direct-debit"
+msgstr "Lastschrift"
\ No newline at end of file
diff --git a/locale/en-GB/base.mo b/locale/en-GB/base.mo
index 3838d9e..d26514f 100644
Binary files a/locale/en-GB/base.mo and b/locale/en-GB/base.mo differ
diff --git a/locale/en-GB/base.po b/locale/en-GB/base.po
index 0059bfe..93799b2 100644
--- a/locale/en-GB/base.po
+++ b/locale/en-GB/base.po
@@ -11,22 +11,25 @@ msgid "Unzer SEPA-Lastschrift"
 msgstr "Unzer SEPA Direct Debit"
 
 msgid "Unzer Lastschrift"
-msgstr "Unzer Direct Debit"
+msgstr "Unzer SEPA Direct Debit"
 
 msgid "Unzer SEPA-Lastschrift (guaranteed)"
-msgstr "Unzer SEPA Direct Debit (secured)"
+msgstr "(Deprecated) Unzer SEPA Direct Debit (secured)"
 
 msgid "Unzer Lastschrift (secured)"
-msgstr "Unzer Direct Debit (secured)"
+msgstr "(Deprecated) Unzer Direct Debit (secured)"
+
+msgid "Unzer Lastschrift (Paylater)"
+msgstr "Unzer Direct Debit"
 
 msgid "Unzer Rechnung"
-msgstr "Unzer Invoice"
+msgstr "(Deprecated) Unzer Invoice"
 
 msgid "Unzer Rechnung (guaranteed)"
-msgstr "Unzer Ivoice (secured)"
+msgstr "(Deprecated) Unzer Invoice Secured"
 
 msgid "Unzer Rechnung (secured)"
-msgstr "Unzer Ivoice (secured)"
+msgstr "(Deprecated) Unzer Invoice Secured"
 
 msgid "Unzer Fakturierung von Rechnungen"
 msgstr "Unzer Invoice Factoring"
@@ -74,10 +77,16 @@ msgid "Unzer FlexiPay Installment (Hire Purchase)"
 msgstr "Unzer FlexiPay Instalment (Hire Purchase)"
 
 msgid "Unzer Instalment"
-msgstr "Unzer Instalment"
+msgstr "(Deprecated) Unzer Installment"
 
 msgid "Unzer Ratenkauf"
-msgstr "Unzer Instalment"
+msgstr "(Deprecated) Unzer Instalment"
+
+msgid "Unzer Rechnung (Jetzt kaufen, Später bezahlen)"
+msgstr "Unzer Invoice"
+
+msgid "Unzer Ratenzahlung (Paylater)"
+msgstr "Unzer Installment"
 
 msgid "hpError"
 msgstr "Error"
@@ -176,19 +185,19 @@ msgid "hpPaymentmethodCard"
 msgstr "Credit Card"
 
 msgid "hpPaymentmethodSEPA"
-msgstr "Direct Debit"
+msgstr "SEPA Direct Debit"
 
 msgid "hpPaymentmethodSEPAGuaranteed"
-msgstr "Direct Debit (secured)"
+msgstr "(Deprecated) Direct Debit (secured)"
 
 msgid "hpPaymentmethodInvoice"
-msgstr "Invoice"
+msgstr "(Deprecated) Invoice"
 
 msgid "hpPaymentmethodInvoiceGuaranteed"
-msgstr "Invoice (secured)"
+msgstr "(Deprecated) Invoice (secured)"
 
 msgid "hpPaymentmethodInvoiceFactoring"
-msgstr "Invoice (factoring)"
+msgstr "(Deprecated) Invoice (factoring)"
 
 msgid "hpPaymentmethodPayPal"
 msgstr "PayPal"
@@ -218,11 +227,20 @@ msgid "hpPaymentmethodiDEAL"
 msgstr "iDEAL"
 
 msgid "hpPaymentmethodHirePurchaseDirectDebit"
-msgstr "Instalment"
+msgstr "(Deprecated) Instalment"
+
+msgid "paylater-invoice"
+msgstr "Invoice"
+
+msgid "paylater-installment"
+msgstr "Installment"
 
 msgid "hpOpenInPortal"
 msgstr "Open Order in Insight Portal"
 
+msgid "hpOpenInPaylaterPortal"
+msgstr "Open in Unzer Pay Later - Merchant Portal"
+
 msgid "hpDelivieryAddress"
 msgstr "Deliviery Address"
 
@@ -407,4 +425,153 @@ msgid "hpPaymentMethodDuringCheckoutNotification"
 msgstr "The payment method \"%s\" is not usable before order completion."
 
 msgid "hpPaymentMethodNotConfiguredNotification"
-msgstr "The payment method \"%s\" is not configured!"
\ No newline at end of file
+msgstr "The payment method \"%s\" is not configured!"
+
+msgid "hpWarningWebhookUrlChanged"
+msgstr "The URL of the Unzer Webhook Handling page has changed, so the plugin can no longer process incoming payments correctly. See the <a href=\"https://redirect.solution360.de/?r=docsunzerjtl5#Warum-erhalte-ich-die-Nachricht,-dass-sich-die-URL-des-Webhook-oder-des-Workflows-ge%C3%A4ndert-hat?\" target=\"_blank\">documentation</a> to find out how to fix the error"
+
+msgid "hpWarningSyncWorkflowUrlChanged"
+msgstr "The URL of the Unzer WaWi Workflow Handling page has changed, so the plugin can no longer activate invoices correctly. See the <a href=\"https://redirect.solution360.de/?r=docsunzerjtl5#Warum-erhalte-ich-die-Nachricht,-dass-sich-die-URL-des-Webhook-oder-des-Workflows-ge%C3%A4ndert-hat?\" target=\"_blank\">documentation</a> to find out how to fix the error"
+
+msgid "hpApplePayRefreshCert"
+msgstr "Refresh"
+
+msgid "hpApplePayDownloadCert"
+msgstr "Download CSR"
+
+msgid "hpApplePayUploadCert"
+msgstr "Upload Certificate"
+
+msgid "hpApplePayUpload"
+msgstr "Browse"
+
+msgid "hpApplePayPaymentGeneral"
+msgstr "Allgemein"
+
+msgid "hpApplePayPaymentGeneralMerchantId"
+msgstr "Merchant Identifier"
+
+msgid "hpApplePayPaymentGeneralMerchantIdHelp"
+msgstr "The merchant identifier created in the Apple Developer Account."
+
+msgid "hpApplePayPaymentGeneralMerchantDomain"
+msgstr "Merchant Domain"
+
+msgid "hpApplePayPaymentGeneralMerchantDomainHelp"
+msgstr "The merchant/shop URL that was saved in the Apple Developer Account to use with the merchant ID."
+
+msgid "hpApplePayPaymentProcessingCertificate"
+msgstr "Payment Processing Certificate"
+
+msgid "hpApplePayPaymentProcessingCertificateCSR"
+msgstr "Certificate Signing Request (CSR)"
+
+msgid "hpApplePayPaymentProcessingCertificateCSRHelp"
+msgstr "The Certificate Signing Request (CSR) file to create the Apple Pay Payment Processing certificate."
+
+msgid "hpApplePayPaymentProcessingCertificateApple"
+msgstr "Apple Pay Certificate"
+
+msgid "hpApplePayPaymentProcessingCertificateAppleHelp"
+msgstr "The Payment Processing Certificate created by Apple."
+
+msgid "hpApplePayMerchantIdentityCertificate"
+msgstr "Merchant Identity Certificate"
+
+msgid "hpApplePayMerchantIdentityCertificateCSR"
+msgstr "Certificate Signing Request (CSR)"
+
+msgid "hpApplePayMerchantIdentityCertificateCSRHelp"
+msgstr "The Certificate Signing Request (CSR) file to create the Apple Pay Merchant Identity certificate."
+
+msgid "hpApplePayMerchantIdentityCertificateApple"
+msgstr "Apple Pay Certificate"
+
+msgid "hpApplePayMerchantIdentityCertificateAppleHelp"
+msgstr "The Merchant Indentity Certificate created by Apple."
+
+msgid "hpApplePayUnzerIDs"
+msgstr "Unzer Payment Processing Certificate IDs"
+
+msgid "hpApplePayUpdateCert"
+msgstr "Activate Certificate"
+
+msgid "CERTIFICATE_TRANSFORMATION_ERROR"
+msgstr "Certificate could not be converted to text"
+
+msgid "ERROR_ID_LOAD_ERROR"
+msgstr "Certificate could not be loaded. Please check if the certificate is valid."
+
+msgid "hpSettingsActive"
+msgstr "active"
+
+msgid "hpSettingsAddIncomingPayments"
+msgstr "Add Incoming Payments"
+
+msgid "hpSettingsAddIncomingPaymentsHelp"
+msgstr "Controls whether the plugin sets incoming payments automatically for JTL-Wawi.<br/>You should only ever deactivate this option if you set your incoming payments in JTL-Wawi in a different way <em>(e.g. manually or via the payment synchronisation module.)</em>"
+
+msgid "hpDeprecationPaymentMethodTitle"
+msgstr "DEPRECATION: %s"
+
+msgid "hpDeprecationInvoiceNotice"
+msgstr ""
+"You are using the payment method `%s`, note that this method is now deprecated by Unzer. It is currently supported, but there are no further developments planned for it.\n"
+"\n"
+"The replacement for this payment method is the new `Unzer Invoice (Buy Now Pay Later)` payment method..\n"
+"\n"
+"If you want to migrate, please get in touch with your contact person at Unzer!"
+
+msgid "Ungültiger Private Key."
+msgstr "Invalid private key."
+
+msgid "Ungültiger Public Key. Bitte stellen Sie sicher, dass sie hier Ihren Public Key und nicht Ihren Private Key angeben!"
+msgstr "Invalid public key. Please make sure that you enter your public key here and not your private key!"
+
+msgid "Die Webhooks wurden erfolgreich gespeichert."
+msgstr "The webhooks have been saved successfully."
+
+msgid "Key Pairs"
+msgstr "Key Pairs"
+
+msgid "hpKeyPairEdit"
+msgstr "Edit Key Pair"
+
+msgid "hpKeypairIsB2B"
+msgstr "B2B"
+
+msgid "hpKeypairIsB2BHelp"
+msgstr "Specifies whether the key pair is to be used only for B2B clients."
+
+msgid "hpKeypairCurrencyHelp"
+msgstr "Specifies for which currency the key pair is to be used."
+
+msgid "hpKeypairPaymentMethodsHelp"
+msgstr "Specifies for which payment type the key pair is to be used."
+
+msgid "hpSettingsPqSelectorInstallmentInfo"
+msgstr "PQ-Selector for instalment information on the order confirm page"
+
+msgid "hpSettingsPqSelectorInstallmentInfoHelp"
+msgstr "The PHP Query Selector for the injection of the instalment information on the order confirm page"
+
+msgid "hpSettingsPqMethodInstallmentInfo"
+msgstr "PQ-Method for instalment information on the order confirm page"
+
+msgid "hpSettingsPqMethodInstallmentInfoHelp"
+msgstr "The PHP Query Method for the injection of the instalment information on the order confirm page"
+
+msgid "hpPaymentReference"
+msgstr "Payment Reference"
+
+msgid "paylater-direct-debit"
+msgstr "Direct Debit"
+
+msgid "Hinzufügen"
+msgstr "Add"
+
+msgid "Die Einstellungen wurden erfolgreich gespeichert."
+msgstr "The settings have been saved successfully."
+
+msgid "Dokumentation"
+msgstr "Documentation"
diff --git a/paymentmethod/HeidelpayAlipay.php b/paymentmethod/HeidelpayAlipay.php
index e95d739..188de20 100644
--- a/paymentmethod/HeidelpayAlipay.php
+++ b/paymentmethod/HeidelpayAlipay.php
@@ -1,13 +1,16 @@
 <?php
+
 declare(strict_types=1);
 
 namespace Plugin\s360_unzer_shop5\paymentmethod;
 
+use JTL\Checkout\Bestellung;
 use UnzerSDK\Resources\PaymentTypes\BasePaymentType;
 use UnzerSDK\Resources\TransactionTypes\AbstractTransactionType;
 use UnzerSDK\Resources\TransactionTypes\Charge;
 use Plugin\s360_unzer_shop5\src\Payments\HeidelpayPaymentMethod;
 use Plugin\s360_unzer_shop5\src\Payments\Interfaces\RedirectPaymentInterface;
+use Plugin\s360_unzer_shop5\src\Payments\Traits\HasCustomer;
 use Plugin\s360_unzer_shop5\src\Payments\Traits\HasMetadata;
 
 /**
@@ -26,20 +29,32 @@
 class HeidelpayAlipay extends HeidelpayPaymentMethod implements RedirectPaymentInterface
 {
     use HasMetadata;
+    use HasCustomer;
 
     /**
      * @inheritDoc
      * @return AbstractTransactionType|Charge
      */
-    protected function performTransaction(BasePaymentType $payment, $order): AbstractTransactionType
+    protected function performTransaction(BasePaymentType $payment, Bestellung $order): AbstractTransactionType
     {
-        return $this->adapter->getApi()->charge(
+        // Create / Update existing customer resource if needed
+        $customer = $this->createOrFetchHeidelpayCustomer($this->adapter, $this->sessionHelper, false);
+
+        if ($customer->getId()) {
+            $customer = $this->adapter->getCurrentConnection()->updateCustomer($customer);
+        }
+
+        $charge = new Charge(
             $this->getTotalPriceCustomerCurrency($order),
-            $order->Waehrung->cISO,
+            $order->Waehrung->getCode(),
+            $this->getReturnURL($order)
+        );
+        $charge->setOrderId($order->cBestellNr ?? null);
+
+        return $this->adapter->getCurrentConnection()->performCharge(
+            $charge,
             $payment->getId(),
-            $this->getReturnURL($order),
-            null,
-            $order->cBestellNr ?? null,
+            $customer,
             $this->createMetadata()
         );
     }
diff --git a/paymentmethod/HeidelpayCreditCard.php b/paymentmethod/HeidelpayCreditCard.php
index 7fafcb7..48d726f 100644
--- a/paymentmethod/HeidelpayCreditCard.php
+++ b/paymentmethod/HeidelpayCreditCard.php
@@ -1,4 +1,5 @@
 <?php
+
 declare(strict_types=1);
 
 namespace Plugin\s360_unzer_shop5\paymentmethod;
@@ -16,6 +17,7 @@
 use Plugin\s360_unzer_shop5\src\Payments\HeidelpayPaymentMethod;
 use Plugin\s360_unzer_shop5\src\Payments\Interfaces\HandleStepAdditionalInterface;
 use Plugin\s360_unzer_shop5\src\Payments\Interfaces\RedirectPaymentInterface;
+use Plugin\s360_unzer_shop5\src\Payments\Traits\HasCustomer;
 use Plugin\s360_unzer_shop5\src\Payments\Traits\HasMetadata;
 use Plugin\s360_unzer_shop5\src\Utils\Config;
 
@@ -35,9 +37,12 @@
  *
  * @see https://docs.heidelpay.com/docs/card-payment
  */
-class HeidelpayCreditCard extends HeidelpayPaymentMethod implements RedirectPaymentInterface, HandleStepAdditionalInterface
+class HeidelpayCreditCard extends HeidelpayPaymentMethod implements
+    RedirectPaymentInterface,
+    HandleStepAdditionalInterface
 {
     use HasMetadata;
+    use HasCustomer;
 
     // Order Attributes
     public const ATTR_CARD_HOLDER = 'unzer_card_holder';
@@ -68,6 +73,10 @@ public function getOrderAttributes(Bestellung $order, AbstractTransactionType $t
             $oPaymentInfo->cGueltigkeit = Text::convertUTF8($type->getExpiryDate() ?? '');
             $oPaymentInfo->cCVV         = Text::convertUTF8($type->getCvc() ?? '');
             $oPaymentInfo->cKartenTyp   = Text::convertUTF8($type->getBrand() ?? '');
+            $oPaymentInfo->cBankName    = '';
+            $oPaymentInfo->cKartenNr    = '';
+            $oPaymentInfo->cCVV         = '';
+
 
             isset($oPaymentInfo->kZahlungsInfo) ? $oPaymentInfo->updateInDB() : $oPaymentInfo->insertInDB();
 
@@ -82,7 +91,7 @@ public function getOrderAttributes(Bestellung $order, AbstractTransactionType $t
         } catch (Exception $exc) {
             $this->errorLog(
                 'An exception was thrown while trying to get the order attributes '
-                . Text::convertUTF8($exc->getMessage()),
+                    . Text::convertUTF8($exc->getMessage()),
                 static::class
             );
         }
@@ -115,15 +124,26 @@ public function handleStepAdditional(JTLSmarty $view): void
      * @inheritDoc
      * @return AbstractTransactionType|Charge
      */
-    protected function performTransaction(BasePaymentType $payment, $order): AbstractTransactionType
+    protected function performTransaction(BasePaymentType $payment, Bestellung $order): AbstractTransactionType
     {
-        return $this->adapter->getApi()->charge(
+        // Create / Update existing customer resource if needed
+        $customer = $this->createOrFetchHeidelpayCustomer($this->adapter, $this->sessionHelper, false);
+
+        if ($customer->getId()) {
+            $customer = $this->adapter->getCurrentConnection()->updateCustomer($customer);
+        }
+
+        $charge = new Charge(
             $this->getTotalPriceCustomerCurrency($order),
-            $order->Waehrung->cISO,
+            $order->Waehrung->getCode(),
+            $this->getReturnURL($order)
+        );
+        $charge->setOrderId($order->cBestellNr ?? null);
+
+        return $this->adapter->getCurrentConnection()->performCharge(
+            $charge,
             $payment->getId(),
-            $this->getReturnURL($order),
-            null,
-            $order->cBestellNr ?? null,
+            $customer,
             $this->createMetadata()
         );
     }
diff --git a/paymentmethod/HeidelpayEPS.php b/paymentmethod/HeidelpayEPS.php
index 53a6e4d..400e7df 100644
--- a/paymentmethod/HeidelpayEPS.php
+++ b/paymentmethod/HeidelpayEPS.php
@@ -1,13 +1,16 @@
 <?php
+
 declare(strict_types=1);
 
 namespace Plugin\s360_unzer_shop5\paymentmethod;
 
+use JTL\Checkout\Bestellung;
 use UnzerSDK\Resources\PaymentTypes\BasePaymentType;
 use UnzerSDK\Resources\TransactionTypes\AbstractTransactionType;
 use UnzerSDK\Resources\TransactionTypes\Charge;
 use Plugin\s360_unzer_shop5\src\Payments\HeidelpayPaymentMethod;
 use Plugin\s360_unzer_shop5\src\Payments\Interfaces\RedirectPaymentInterface;
+use Plugin\s360_unzer_shop5\src\Payments\Traits\HasCustomer;
 use Plugin\s360_unzer_shop5\src\Payments\Traits\HasMetadata;
 
 /**
@@ -26,20 +29,32 @@
 class HeidelpayEPS extends HeidelpayPaymentMethod implements RedirectPaymentInterface
 {
     use HasMetadata;
+    use HasCustomer;
 
     /**
      * @inheritDoc
      * @return AbstractTransactionType|Charge
      */
-    protected function performTransaction(BasePaymentType $payment, $order): AbstractTransactionType
+    protected function performTransaction(BasePaymentType $payment, Bestellung $order): AbstractTransactionType
     {
-        return $this->adapter->getApi()->charge(
+        // Create / Update existing customer resource if needed
+        $customer = $this->createOrFetchHeidelpayCustomer($this->adapter, $this->sessionHelper, false);
+
+        if ($customer->getId()) {
+            $customer = $this->adapter->getCurrentConnection()->updateCustomer($customer);
+        }
+
+        $charge = new Charge(
             $this->getTotalPriceCustomerCurrency($order),
-            $order->Waehrung->cISO,
+            $order->Waehrung->getCode(),
+            $this->getReturnURL($order)
+        );
+        $charge->setOrderId($order->cBestellNr ?? null);
+
+        return $this->adapter->getCurrentConnection()->performCharge(
+            $charge,
             $payment->getId(),
-            $this->getReturnURL($order),
-            null,
-            $order->cBestellNr ?? null,
+            $customer,
             $this->createMetadata()
         );
     }
diff --git a/paymentmethod/HeidelpayFlexiPayDirect.php b/paymentmethod/HeidelpayFlexiPayDirect.php
index 31c4521..35937c0 100644
--- a/paymentmethod/HeidelpayFlexiPayDirect.php
+++ b/paymentmethod/HeidelpayFlexiPayDirect.php
@@ -1,13 +1,16 @@
 <?php
+
 declare(strict_types=1);
 
 namespace Plugin\s360_unzer_shop5\paymentmethod;
 
+use JTL\Cart\Cart;
 use UnzerSDK\Resources\PaymentTypes\BasePaymentType;
 use UnzerSDK\Resources\TransactionTypes\AbstractTransactionType;
 use UnzerSDK\Resources\TransactionTypes\Charge;
 use Plugin\s360_unzer_shop5\src\Payments\HeidelpayPaymentMethod;
 use Plugin\s360_unzer_shop5\src\Payments\Interfaces\RedirectPaymentInterface;
+use Plugin\s360_unzer_shop5\src\Payments\Traits\HasCustomer;
 use Plugin\s360_unzer_shop5\src\Payments\Traits\HasMetadata;
 
 /**
@@ -21,11 +24,13 @@
  * The payer himself only needs to provide credentials for logging into his online banking account
  * and authorize the payment transfer by his designated OTP-device - most likely via sms TAN.
  *
+ * @deprecated
  * @see https://docs.heidelpay.com/docs/flexipay-direct
  */
 class HeidelpayFlexiPayDirect extends HeidelpayPaymentMethod implements RedirectPaymentInterface
 {
     use HasMetadata;
+    use HasCustomer;
 
     /**
      * @inheritDoc
@@ -33,14 +38,43 @@ class HeidelpayFlexiPayDirect extends HeidelpayPaymentMethod implements Redirect
      */
     protected function performTransaction(BasePaymentType $payment, $order): AbstractTransactionType
     {
-        return $this->adapter->getApi()->charge(
+        // Create / Update existing customer resource if needed
+        $customer = $this->createOrFetchHeidelpayCustomer($this->adapter, $this->sessionHelper, false);
+
+        if ($customer->getId()) {
+            $customer = $this->adapter->getApi()->updateCustomer($customer);
+        }
+
+        $charge = new Charge(
             $this->getTotalPriceCustomerCurrency($order),
-            $order->Waehrung->cISO,
+            $order->Waehrung->getCode(),
+            $this->getReturnURL($order)
+        );
+        $charge->setOrderId($order->cBestellNr ?? null);
+
+        return $this->adapter->getApi()->performCharge(
+            $charge,
             $payment->getId(),
-            $this->getReturnURL($order),
-            null,
-            $order->cBestellNr ?? null,
+            $customer,
             $this->createMetadata()
         );
     }
+
+    /**
+     * @inheritDoc
+     */
+    public function isValid(object $customer, Cart $cart): bool
+    {
+        //! Note: Payment Method is deprecated -> should not be used anymore
+        return false;
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function isSelectable(): bool
+    {
+        //! Note: Payment Method is deprecated -> should not be used anymore
+        return false;
+    }
 }
diff --git a/paymentmethod/HeidelpayGiropay.php b/paymentmethod/HeidelpayGiropay.php
index f60cdb8..bb95268 100644
--- a/paymentmethod/HeidelpayGiropay.php
+++ b/paymentmethod/HeidelpayGiropay.php
@@ -1,13 +1,16 @@
 <?php
+
 declare(strict_types=1);
 
 namespace Plugin\s360_unzer_shop5\paymentmethod;
 
+use JTL\Checkout\Bestellung;
 use UnzerSDK\Resources\PaymentTypes\BasePaymentType;
 use UnzerSDK\Resources\TransactionTypes\AbstractTransactionType;
 use UnzerSDK\Resources\TransactionTypes\Charge;
 use Plugin\s360_unzer_shop5\src\Payments\HeidelpayPaymentMethod;
 use Plugin\s360_unzer_shop5\src\Payments\Interfaces\RedirectPaymentInterface;
+use Plugin\s360_unzer_shop5\src\Payments\Traits\HasCustomer;
 use Plugin\s360_unzer_shop5\src\Payments\Traits\HasMetadata;
 
 /**
@@ -24,20 +27,32 @@
 class HeidelpayGiropay extends HeidelpayPaymentMethod implements RedirectPaymentInterface
 {
     use HasMetadata;
+    use HasCustomer;
 
     /**
      * @inheritDoc
      * @return AbstractTransactionType|Charge
      */
-    protected function performTransaction(BasePaymentType $payment, $order): AbstractTransactionType
+    protected function performTransaction(BasePaymentType $payment, Bestellung $order): AbstractTransactionType
     {
-        return $this->adapter->getApi()->charge(
+        // Create / Update existing customer resource if needed
+        $customer = $this->createOrFetchHeidelpayCustomer($this->adapter, $this->sessionHelper, false);
+
+        if ($customer->getId()) {
+            $customer = $this->adapter->getCurrentConnection()->updateCustomer($customer);
+        }
+
+        $charge = new Charge(
             $this->getTotalPriceCustomerCurrency($order),
-            $order->Waehrung->cISO,
+            $order->Waehrung->getCode(),
+            $this->getReturnURL($order)
+        );
+        $charge->setOrderId($order->cBestellNr ?? null);
+
+        return $this->adapter->getCurrentConnection()->performCharge(
+            $charge,
             $payment->getId(),
-            $this->getReturnURL($order),
-            null,
-            $order->cBestellNr ?? null,
+            $customer,
             $this->createMetadata()
         );
     }
diff --git a/paymentmethod/HeidelpayHirePurchaseDirectDebit.php b/paymentmethod/HeidelpayHirePurchaseDirectDebit.php
index 3a97b34..acacace 100644
--- a/paymentmethod/HeidelpayHirePurchaseDirectDebit.php
+++ b/paymentmethod/HeidelpayHirePurchaseDirectDebit.php
@@ -1,4 +1,5 @@
 <?php
+
 declare(strict_types=1);
 
 namespace Plugin\s360_unzer_shop5\paymentmethod;
@@ -24,6 +25,7 @@
 use Plugin\s360_unzer_shop5\src\Payments\Traits\HasCustomer;
 use Plugin\s360_unzer_shop5\src\Payments\Traits\HasMetadata;
 use Plugin\s360_unzer_shop5\src\Payments\Traits\SupportsB2B;
+use Plugin\s360_unzer_shop5\src\Utils\Compatibility;
 use Plugin\s360_unzer_shop5\src\Utils\Config;
 use Plugin\s360_unzer_shop5\src\Utils\SessionHelper;
 use Plugin\s360_unzer_shop5\src\Utils\TranslatorTrait;
@@ -42,21 +44,24 @@
  * 6 and 3 months are the most common, but other plans are possible as well.
  *
  * @see https://docs.heidelpay.com/docs/hire-purchase-payment
+ * @deprecated
  */
-class HeidelpayHirePurchaseDirectDebit extends HeidelpayPaymentMethod implements HandleStepAdditionalInterface, HandleStepReviewOrderInterface
+class HeidelpayHirePurchaseDirectDebit extends HeidelpayPaymentMethod implements
+    HandleStepAdditionalInterface,
+    HandleStepReviewOrderInterface
 {
-    public const TEMPLATE_REVIEW_ORDER = 'template/hire_purchase_direct_debit';
-    public const ATTR_PDF_LINK = 'unzer_rate_pdf_link';
-    public const ATTR_TOTAL_AMOUNT = 'unzer_rate_total_amount';
-    public const ATTR_TOTAL_PURCHASE_AMOUNT = 'unzer_rate_total_purchase_amount';
-    public const ATTR_TOTAL_INTEREST_AMOUNT = 'unzer_rate_total_interest_amount';
-
     use HasBasket;
     use HasCustomer;
     use HasMetadata;
     use SupportsB2B;
     use TranslatorTrait;
 
+    public const TEMPLATE_REVIEW_ORDER = 'template/hire_purchase_direct_debit';
+    public const ATTR_PDF_LINK = 'unzer_rate_pdf_link';
+    public const ATTR_TOTAL_AMOUNT = 'unzer_rate_total_amount';
+    public const ATTR_TOTAL_PURCHASE_AMOUNT = 'unzer_rate_total_purchase_amount';
+    public const ATTR_TOTAL_INTEREST_AMOUNT = 'unzer_rate_total_interest_amount';
+
     /**
      * Save the instalment rate information.
      *
@@ -82,6 +87,9 @@ public function getOrderAttributes(Bestellung $order, AbstractTransactionType $t
             $oPaymentInfo->cBIC              = Text::convertUTF8($type->getBic() ?? '');
             $oPaymentInfo->cKontoNr          = $oPaymentInfo->cIBAN;
             $oPaymentInfo->cBLZ              = $oPaymentInfo->cBIC;
+            $oPaymentInfo->cBankName         = '';
+            $oPaymentInfo->cKartenNr         = '';
+            $oPaymentInfo->cCVV              = '';
 
             isset($oPaymentInfo->kZahlungsInfo) ? $oPaymentInfo->updateInDB() : $oPaymentInfo->insertInDB();
 
@@ -148,12 +156,30 @@ public function handleStepAdditional(JTLSmarty $view): void
             $this->sessionHelper->getFrontendSession()->getCart()->gibGesamtsummeWaren(true),
             2
         );
-        $data['currency'] = $this->sessionHelper->getFrontendSession()->getCurrency()->cISO;
+        $data['currency'] = $this->sessionHelper->getFrontendSession()->getCurrency()->getCode();
         $data['orderDate'] = date('Y-m-d');
 
         $view->assign('hpPayment', $data);
     }
 
+    /**
+     * @inheritDoc
+     */
+    public function isValid(object $customer, Cart $cart): bool
+    {
+        //! Note: Payment Method is deprecated -> should not be used anymore
+        return false;
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function isSelectable(): bool
+    {
+        //! Note: Payment Method is deprecated -> should not be used anymore
+        return false;
+    }
+
     /**
      * Check if payment settings are correct.
      * @inheritDoc
@@ -205,8 +231,8 @@ public function handleStepReviewOrder(JTLSmarty $view): ?string
         $this->handler->prepareView();
 
         try {
-            $paymentId = $this->sessionHelper->get(SessionHelper::KEY_PAYMENT_ID, '');
-            $payment = $this->adapter->getApi()->fetchPayment($paymentId);
+            $paymentId = $this->sessionHelper->get(SessionHelper::KEY_PAYMENT_ID);
+            $payment = $this->adapter->getCurrentConnection()->fetchPayment($paymentId);
 
             // If currency or basket change, redirect to select payment screen to reauthorize new amounts!
             if ($this->handler->currencyChanged($payment) || $this->handler->basketChanged($payment)) {
@@ -312,7 +338,13 @@ private function authorizeInstalmentTransaction(): bool
     {
         // We need to register an order id here otherwise the auth call will fail!
         // @see: BillPay for similiar behavior
-        $orderId = \baueBestellnummer();
+        if (Compatibility::isShopAtLeast52()) {
+            $orderId = $this->sessionHelper->get(SessionHelper::KEY_ORDER_ID) ?? getOrderHandler()->createOrderNo();
+        } else {
+            $orderId = $this->sessionHelper->get(SessionHelper::KEY_ORDER_ID) ?? \baueBestellnummer();
+        }
+
+        $this->sessionHelper->set(SessionHelper::KEY_ORDER_ID, $orderId);
 
         // Create or fetch customer resource
         $session = $this->sessionHelper->getFrontendSession();
@@ -329,7 +361,7 @@ private function authorizeInstalmentTransaction(): bool
 
         // Update existing customer resource if needed
         if ($customer->getId()) {
-            $customer = $this->adapter->getApi()->updateCustomer($customer);
+            $customer = $this->adapter->getCurrentConnection()->updateCustomer($customer);
             $this->debugLog('Updated Customer Resource: ' . $customer->jsonSerialize(), static::class);
         }
 
@@ -343,13 +375,16 @@ private function authorizeInstalmentTransaction(): bool
             $paymentType = $this->adapter->fetchPaymentType();
 
             // Authorize Transaction
-            $authorization = $this->adapter->getApi()->authorize(
+            $auth = (new Authorization(
                 $paymentType->getTotalPurchaseAmount(),
-                $session->getCurrency()->cISO,
+                $session->getCurrency()->getCode(),
+                Shop::Container()->getLinkService()->getStaticRoute('bestellvorgang.php')
+            ))->setOrderId($orderId);
+
+            $authorization = $this->adapter->getCurrentConnection()->performAuthorization(
+                $auth,
                 $paymentType,
-                Shop::Container()->getLinkService()->getStaticRoute('bestellvorgang.php'),
                 $customer,
-                $orderId,
                 $this->createMetadata(),
                 $basket
             );
@@ -372,7 +407,7 @@ private function authorizeInstalmentTransaction(): bool
             $this->sessionHelper->redirectError(
                 Text::convertUTF8($authorization->getMessage()->getCustomer()),
                 'heidelpayTransactionError',
-                PaymentHandler::REDIRECT_ON_FAILURE_URL
+                PaymentHandler::REDIRECT_TO_PAYMENT_SELECTION_URL
             );
         } catch (UnzerApiException $exc) {
             $msg = $exc->getMerchantMessage() . ' | Id: ' . $exc->getErrorId() . ' | Code: ' . $exc->getCode();
@@ -380,7 +415,7 @@ private function authorizeInstalmentTransaction(): bool
             $this->sessionHelper->redirectError(
                 Text::convertUTF8($exc->getClientMessage()),
                 'UnzerApiException',
-                PaymentHandler::REDIRECT_ON_FAILURE_URL
+                PaymentHandler::REDIRECT_TO_PAYMENT_SELECTION_URL
             );
         } catch (RuntimeException $exc) {
             $this->errorLog(
@@ -390,14 +425,14 @@ private function authorizeInstalmentTransaction(): bool
             $this->sessionHelper->redirectError(
                 $this->trans(Config::LANG_PAYMENT_PROCESS_RUNTIME_EXCEPTION),
                 'paymentRuntimeException',
-                PaymentHandler::REDIRECT_ON_FAILURE_URL
+                PaymentHandler::REDIRECT_TO_PAYMENT_SELECTION_URL
             );
         } catch (Exception $exc) {
             $this->errorLog('An error occured in the payment process: ' . $exc->getMessage(), static::class);
             $this->sessionHelper->redirectError(
                 $this->trans(Config::LANG_PAYMENT_PROCESS_EXCEPTION),
                 'paymentRuntimeException',
-                PaymentHandler::REDIRECT_ON_FAILURE_URL
+                PaymentHandler::REDIRECT_TO_PAYMENT_SELECTION_URL
             );
         }
     }
diff --git a/paymentmethod/HeidelpayInvoice.php b/paymentmethod/HeidelpayInvoice.php
index db3d475..3bb2549 100644
--- a/paymentmethod/HeidelpayInvoice.php
+++ b/paymentmethod/HeidelpayInvoice.php
@@ -1,15 +1,20 @@
 <?php
+
 declare(strict_types=1);
 
 namespace Plugin\s360_unzer_shop5\paymentmethod;
 
+use JTL\Backend\Notification;
+use JTL\Backend\NotificationEntry;
 use UnzerSDK\Resources\PaymentTypes\BasePaymentType;
 use UnzerSDK\Resources\TransactionTypes\AbstractTransactionType;
 use UnzerSDK\Resources\TransactionTypes\Charge;
 use JTL\Checkout\Bestellung;
 use JTL\Checkout\ZahlungsInfo;
 use JTL\Helpers\Text;
+use JTL\Shop;
 use Plugin\s360_unzer_shop5\src\Payments\HeidelpayPaymentMethod;
+use Plugin\s360_unzer_shop5\src\Payments\Traits\HasCustomer;
 use Plugin\s360_unzer_shop5\src\Payments\Traits\HasMetadata;
 
 /**
@@ -21,10 +26,55 @@
  * or manual bank transfer, you will receive a notification of the successful payment.
  *
  * @see https://docs.heidelpay.com/docs/invoice-payment
+ * @deprecated
  */
 class HeidelpayInvoice extends HeidelpayPaymentMethod
 {
     use HasMetadata;
+    use HasCustomer;
+
+    /**
+     * @inheritDoc
+     */
+    public function initBackendNotification(): void
+    {
+        // Add deprecation notice IF paymethod is used (ie assigned to a shipping method)
+        $payMethod = $this->plugin->getPaymentMethods()->getMethodByID($this->moduleID);
+
+        if ($payMethod !== null && $payMethod->getActive()) {
+            $this->kZahlungsart = $payMethod->getMethodID();
+            $result = Shop::Container()->getDB()->select('tversandartzahlungsart', 'kZahlungsart', $this->kZahlungsart);
+
+            if ($result) {
+                $notification = new NotificationEntry(
+                    NotificationEntry::TYPE_INFO,
+                    sprintf(__('hpDeprecationPaymentMethodTitle'), $payMethod->getName()),
+                    sprintf(nl2br(__('hpDeprecationInvoiceNotice')), $payMethod->getName())
+                );
+
+                $notification->setPluginId((string) $this->plugin->getID());
+                Notification::getInstance()->addNotify($notification);
+            }
+        }
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function isSelectable(): bool
+    {
+        // Add deprecation notice log IF payment method is selectable (ie being actively used)
+        $isSelectable = parent::isSelectable();
+        $payMethod = $this->plugin->getPaymentMethods()->getMethodByID($this->moduleID);
+
+        if ($isSelectable && $payMethod !== null && $payMethod->getActive()) {
+            $this->noticeLog(
+                sprintf(nl2br(__('hpDeprecationInvoiceNotice')), $payMethod->getName())
+            );
+        }
+
+        return $isSelectable;
+    }
 
     /**
      * Data the merchant needs to put on the Invoice.
@@ -53,6 +103,9 @@ public function getOrderAttributes(Bestellung $order, AbstractTransactionType $t
         $oPaymentInfo->cKontoNr          = $oPaymentInfo->cIBAN;
         $oPaymentInfo->cBLZ              = $oPaymentInfo->cBIC;
         $oPaymentInfo->cVerwendungszweck = Text::convertUTF8($transaction->getDescriptor() ?? '');
+        $oPaymentInfo->cBankName         = '';
+        $oPaymentInfo->cKartenNr         = '';
+        $oPaymentInfo->cCVV              = '';
 
         isset($oPaymentInfo->kZahlungsInfo) ? $oPaymentInfo->updateInDB() : $oPaymentInfo->insertInDB();
 
@@ -68,15 +121,26 @@ public function getOrderAttributes(Bestellung $order, AbstractTransactionType $t
      * @inheritDoc
      * @return AbstractTransactionType|Charge
      */
-    protected function performTransaction(BasePaymentType $payment, $order): AbstractTransactionType
+    protected function performTransaction(BasePaymentType $payment, Bestellung $order): AbstractTransactionType
     {
-        return $this->adapter->getApi()->charge(
+        // Create / Update existing customer resource if needed
+        $customer = $this->createOrFetchHeidelpayCustomer($this->adapter, $this->sessionHelper, false);
+
+        if ($customer->getId()) {
+            $customer = $this->adapter->getCurrentConnection()->updateCustomer($customer);
+        }
+
+        $charge = new Charge(
             $this->getTotalPriceCustomerCurrency($order),
-            $order->Waehrung->cISO,
+            $order->Waehrung->getCode(),
+            $this->getReturnURL($order)
+        );
+        $charge->setOrderId($order->cBestellNr ?? null);
+
+        return $this->adapter->getCurrentConnection()->performCharge(
+            $charge,
             $payment->getId(),
-            $this->getReturnURL($order),
-            null,
-            $order->cBestellNr ?? null,
+            $customer,
             $this->createMetadata()
         );
     }
diff --git a/paymentmethod/HeidelpayInvoiceFactoring.php b/paymentmethod/HeidelpayInvoiceFactoring.php
index 8553cc7..37d6376 100644
--- a/paymentmethod/HeidelpayInvoiceFactoring.php
+++ b/paymentmethod/HeidelpayInvoiceFactoring.php
@@ -1,4 +1,5 @@
 <?php
+
 declare(strict_types=1);
 
 namespace Plugin\s360_unzer_shop5\paymentmethod;
@@ -28,6 +29,7 @@
  * thus guaranteeing your payment.
  *
  * @see https://docs.heidelpay.com/docs/invoice-payment
+ * @deprecated
  */
 class HeidelpayInvoiceFactoring extends HeidelpayInvoice implements CancelableInterface, HandleStepAdditionalInterface
 {
@@ -139,13 +141,17 @@ protected function performTransaction(BasePaymentType $payment, $order): Abstrac
         );
         $this->debugLog('Basket Resource: ' . $basket->jsonSerialize(), static::class);
 
-        return $this->adapter->getApi()->charge(
+        $charge = new Charge(
             $this->getTotalPriceCustomerCurrency($order),
-            $order->Waehrung->cISO,
+            $order->Waehrung->getCode(),
+            $this->getReturnURL($order)
+        );
+        $charge->setOrderId($order->cBestellNr ?? null);
+
+        return $this->adapter->getApi()->performCharge(
+            $charge,
             $payment->getId(),
-            $this->getReturnURL($order),
             $customer,
-            $order->cBestellNr ?? null,
             $this->createMetadata(),
             $basket
         );
diff --git a/paymentmethod/HeidelpayInvoiceGuaranteed.php b/paymentmethod/HeidelpayInvoiceGuaranteed.php
index 7a7b61c..14a205c 100644
--- a/paymentmethod/HeidelpayInvoiceGuaranteed.php
+++ b/paymentmethod/HeidelpayInvoiceGuaranteed.php
@@ -1,9 +1,11 @@
 <?php
+
 declare(strict_types=1);
 
 namespace Plugin\s360_unzer_shop5\paymentmethod;
 
 use JTL\Checkout\Bestellung;
+use JTL\Shop;
 use UnzerSDK\Resources\PaymentTypes\BasePaymentType;
 use UnzerSDK\Resources\TransactionTypes\AbstractTransactionType;
 use UnzerSDK\Resources\TransactionTypes\Charge;
@@ -14,6 +16,7 @@
 use Plugin\s360_unzer_shop5\src\Payments\Traits\HasCustomer;
 use Plugin\s360_unzer_shop5\src\Payments\Traits\HasMetadata;
 use Plugin\s360_unzer_shop5\src\Payments\Traits\SupportsB2B;
+use Plugin\s360_unzer_shop5\src\Utils\Config;
 use Plugin\s360_unzer_shop5\src\Utils\SessionHelper;
 use UnzerSDK\Constants\CancelReasonCodes;
 use UnzerSDK\Resources\Payment;
@@ -29,6 +32,7 @@
  * it carries out a risk check in advance.
  *
  * @see https://docs.heidelpay.com/docs/invoice-payment
+ * @deprecated
  */
 class HeidelpayInvoiceGuaranteed extends HeidelpayInvoice implements HandleStepAdditionalInterface, CancelableInterface
 {
@@ -52,7 +56,13 @@ public function cancelPaymentTransaction(
         AbstractTransactionType $transaction,
         Bestellung $order
     ): Cancellation {
-        return $transaction->cancel(null, CancelReasonCodes::REASON_CODE_CANCEL);
+        $reference = str_replace(
+            ['%ORDER_ID%', '%SHOPNAME%'],
+            [$order->cBestellNr, Shop::getSettingValue(CONF_GLOBAL, 'global_shopname')],
+            $this->trans(Config::LANG_CANCEL_PAYMENT_REFERENCE)
+        );
+
+        return $transaction->cancel(null, CancelReasonCodes::REASON_CODE_CANCEL, $reference);
     }
 
     /**
@@ -63,12 +73,14 @@ public function cancelPaymentTransaction(
      */
     public function handleStepAdditional(JTLSmarty $view): void
     {
+        $this->adapter->getConnectionForSession();
         $shopCustomer = $this->sessionHelper->getFrontendSession()->getCustomer();
         $customer = $this->createOrFetchHeidelpayCustomer(
             $this->adapter,
             $this->sessionHelper,
             $this->isB2BCustomer($shopCustomer)
         );
+
         $customer->setShippingAddress(
             $this->createHeidelpayAddress(
                 $this->sessionHelper->getFrontendSession()->get('Lieferadresse')
@@ -110,7 +122,7 @@ public function validateAdditional(): bool
      * @inheritDoc
      * @return AbstractTransactionType|Charge
      */
-    protected function performTransaction(BasePaymentType $payment, $order): AbstractTransactionType
+    protected function performTransaction(BasePaymentType $payment, Bestellung $order): AbstractTransactionType
     {
         // Create or fetch customer resource
         $shopCustomer = $this->sessionHelper->getFrontendSession()->getCustomer();
@@ -125,7 +137,7 @@ protected function performTransaction(BasePaymentType $payment, $order): Abstrac
 
         // Update existing customer resource if needed
         if ($customer->getId()) {
-            $customer = $this->adapter->getApi()->updateCustomer($customer);
+            $customer = $this->adapter->getCurrentConnection()->updateCustomer($customer);
             $this->debugLog('Updated Customer Resource: ' . $customer->jsonSerialize(), static::class);
         }
 
@@ -139,13 +151,17 @@ protected function performTransaction(BasePaymentType $payment, $order): Abstrac
         );
         $this->debugLog('Basket Resource: ' . $basket->jsonSerialize(), static::class);
 
-        return $this->adapter->getApi()->charge(
+        $charge = new Charge(
             $this->getTotalPriceCustomerCurrency($order),
-            $order->Waehrung->cISO,
+            $order->Waehrung->getCode(),
+            $this->getReturnURL($order)
+        );
+        $charge->setOrderId($order->cBestellNr ?? null);
+
+        return $this->adapter->getCurrentConnection()->performCharge(
+            $charge,
             $payment->getId(),
-            $this->getReturnURL($order),
             $customer,
-            $order->cBestellNr ?? null,
             $this->createMetadata(),
             $basket
         );
diff --git a/paymentmethod/HeidelpayPayPal.php b/paymentmethod/HeidelpayPayPal.php
index 7299e8a..80b7c76 100644
--- a/paymentmethod/HeidelpayPayPal.php
+++ b/paymentmethod/HeidelpayPayPal.php
@@ -1,8 +1,10 @@
 <?php
+
 declare(strict_types=1);
 
 namespace Plugin\s360_unzer_shop5\paymentmethod;
 
+use JTL\Checkout\Bestellung;
 use UnzerSDK\Resources\PaymentTypes\BasePaymentType;
 use UnzerSDK\Resources\TransactionTypes\AbstractTransactionType;
 use UnzerSDK\Resources\TransactionTypes\Charge;
@@ -38,7 +40,7 @@ class HeidelpayPayPal extends HeidelpayPaymentMethod implements RedirectPaymentI
      * @inheritDoc
      * @return AbstractTransactionType|Charge
      */
-    protected function performTransaction(BasePaymentType $payment, $order): AbstractTransactionType
+    protected function performTransaction(BasePaymentType $payment, Bestellung $order): AbstractTransactionType
     {
         // Create a customer with shipping address for Paypal's Buyer Protection
         $customer = $this->createOrFetchHeidelpayCustomer($this->adapter, $this->sessionHelper, false);
@@ -47,16 +49,20 @@ protected function performTransaction(BasePaymentType $payment, $order): Abstrac
 
         // Update existing customer resource if needed
         if ($customer->getId()) {
-            $customer = $this->adapter->getApi()->updateCustomer($customer);
+            $customer = $this->adapter->getCurrentConnection()->updateCustomer($customer);
         }
 
-        return $this->adapter->getApi()->charge(
+        $charge = new Charge(
             $this->getTotalPriceCustomerCurrency($order),
-            $order->Waehrung->cISO,
+            $order->Waehrung->getCode(),
+            $this->getReturnURL($order)
+        );
+        $charge->setOrderId($order->cBestellNr ?? null);
+
+        return $this->adapter->getCurrentConnection()->performCharge(
+            $charge,
             $payment->getId(),
-            $this->getReturnURL($order),
             $customer,
-            $order->cBestellNr ?? null,
             $this->createMetadata()
         );
     }
diff --git a/paymentmethod/HeidelpayPrepayment.php b/paymentmethod/HeidelpayPrepayment.php
index 4ded596..578d665 100644
--- a/paymentmethod/HeidelpayPrepayment.php
+++ b/paymentmethod/HeidelpayPrepayment.php
@@ -1,4 +1,5 @@
 <?php
+
 declare(strict_types=1);
 
 namespace Plugin\s360_unzer_shop5\paymentmethod;
@@ -10,6 +11,7 @@
 use JTL\Checkout\ZahlungsInfo;
 use JTL\Helpers\Text;
 use Plugin\s360_unzer_shop5\src\Payments\HeidelpayPaymentMethod;
+use Plugin\s360_unzer_shop5\src\Payments\Traits\HasCustomer;
 use Plugin\s360_unzer_shop5\src\Payments\Traits\HasMetadata;
 
 /**
@@ -29,6 +31,7 @@
 class HeidelpayPrepayment extends HeidelpayPaymentMethod
 {
     use HasMetadata;
+    use HasCustomer;
 
     /**
      * Data the merchant needs to put on the Invoice.
@@ -55,6 +58,9 @@ public function getOrderAttributes(Bestellung $order, AbstractTransactionType $t
         $oPaymentInfo->cKontoNr          = $oPaymentInfo->cIBAN;
         $oPaymentInfo->cBLZ              = $oPaymentInfo->cBIC;
         $oPaymentInfo->cVerwendungszweck = Text::convertUTF8($transaction->getDescriptor() ?? '');
+        $oPaymentInfo->cBankName         = '';
+        $oPaymentInfo->cKartenNr         = '';
+        $oPaymentInfo->cCVV              = '';
 
         isset($oPaymentInfo->kZahlungsInfo) ? $oPaymentInfo->updateInDB() : $oPaymentInfo->insertInDB();
 
@@ -70,15 +76,26 @@ public function getOrderAttributes(Bestellung $order, AbstractTransactionType $t
      * @inheritDoc
      * @return AbstractTransactionType|Charge
      */
-    protected function performTransaction(BasePaymentType $payment, $order): AbstractTransactionType
+    protected function performTransaction(BasePaymentType $payment, Bestellung $order): AbstractTransactionType
     {
-        return $this->adapter->getApi()->charge(
+        // Create / Update existing customer resource if needed
+        $customer = $this->createOrFetchHeidelpayCustomer($this->adapter, $this->sessionHelper, false);
+
+        if ($customer->getId()) {
+            $customer = $this->adapter->getCurrentConnection()->updateCustomer($customer);
+        }
+
+        $charge = new Charge(
             $this->getTotalPriceCustomerCurrency($order),
-            $order->Waehrung->cISO,
+            $order->Waehrung->getCode(),
+            $this->getReturnURL($order)
+        );
+        $charge->setOrderId($order->cBestellNr ?? null);
+
+        return $this->adapter->getCurrentConnection()->performCharge(
+            $charge,
             $payment->getId(),
-            $this->getReturnURL($order),
-            null,
-            $order->cBestellNr ?? null,
+            $customer,
             $this->createMetadata()
         );
     }
diff --git a/paymentmethod/HeidelpayPrzelewy24.php b/paymentmethod/HeidelpayPrzelewy24.php
index dcc570c..3ffc6dd 100644
--- a/paymentmethod/HeidelpayPrzelewy24.php
+++ b/paymentmethod/HeidelpayPrzelewy24.php
@@ -1,13 +1,16 @@
 <?php
+
 declare(strict_types=1);
 
 namespace Plugin\s360_unzer_shop5\paymentmethod;
 
+use JTL\Checkout\Bestellung;
 use UnzerSDK\Resources\PaymentTypes\BasePaymentType;
 use UnzerSDK\Resources\TransactionTypes\AbstractTransactionType;
 use UnzerSDK\Resources\TransactionTypes\Charge;
 use Plugin\s360_unzer_shop5\src\Payments\HeidelpayPaymentMethod;
 use Plugin\s360_unzer_shop5\src\Payments\Interfaces\RedirectPaymentInterface;
+use Plugin\s360_unzer_shop5\src\Payments\Traits\HasCustomer;
 use Plugin\s360_unzer_shop5\src\Payments\Traits\HasMetadata;
 
 /**
@@ -24,20 +27,32 @@
 class HeidelpayPrzelewy24 extends HeidelpayPaymentMethod implements RedirectPaymentInterface
 {
     use HasMetadata;
+    use HasCustomer;
 
     /**
      * @inheritDoc
      * @return AbstractTransactionType|Charge
      */
-    protected function performTransaction(BasePaymentType $payment, $order): AbstractTransactionType
+    protected function performTransaction(BasePaymentType $payment, Bestellung $order): AbstractTransactionType
     {
-        return $this->adapter->getApi()->charge(
+        // Create / Update existing customer resource if needed
+        $customer = $this->createOrFetchHeidelpayCustomer($this->adapter, $this->sessionHelper, false);
+
+        if ($customer->getId()) {
+            $customer = $this->adapter->getCurrentConnection()->updateCustomer($customer);
+        }
+
+        $charge = new Charge(
             $this->getTotalPriceCustomerCurrency($order),
-            $order->Waehrung->cISO,
+            $order->Waehrung->getCode(),
+            $this->getReturnURL($order)
+        );
+        $charge->setOrderId($order->cBestellNr ?? null);
+
+        return $this->adapter->getCurrentConnection()->performCharge(
+            $charge,
             $payment->getId(),
-            $this->getReturnURL($order),
-            null,
-            $order->cBestellNr ?? null,
+            $customer,
             $this->createMetadata()
         );
     }
diff --git a/paymentmethod/HeidelpaySEPADirectDebit.php b/paymentmethod/HeidelpaySEPADirectDebit.php
index de4da70..eae63f6 100644
--- a/paymentmethod/HeidelpaySEPADirectDebit.php
+++ b/paymentmethod/HeidelpaySEPADirectDebit.php
@@ -1,8 +1,10 @@
 <?php
+
 declare(strict_types=1);
 
 namespace Plugin\s360_unzer_shop5\paymentmethod;
 
+use JTL\Checkout\Bestellung;
 use UnzerSDK\Resources\PaymentTypes\BasePaymentType;
 use UnzerSDK\Resources\TransactionTypes\AbstractTransactionType;
 use UnzerSDK\Resources\TransactionTypes\Charge;
@@ -11,6 +13,7 @@
 use Plugin\s360_unzer_shop5\src\Payments\HeidelpayPaymentMethod;
 use Plugin\s360_unzer_shop5\src\Payments\Interfaces\HandleStepAdditionalInterface;
 use Plugin\s360_unzer_shop5\src\Payments\Interfaces\RedirectPaymentInterface;
+use Plugin\s360_unzer_shop5\src\Payments\Traits\HasCustomer;
 use Plugin\s360_unzer_shop5\src\Payments\Traits\HasMetadata;
 use Plugin\s360_unzer_shop5\src\Utils\Config;
 use Plugin\s360_unzer_shop5\src\Utils\TranslatorTrait;
@@ -28,9 +31,12 @@
  *
  * @see https://docs.heidelpay.com/docs/sepa-direct-debit-payment
  */
-class HeidelpaySEPADirectDebit extends HeidelpayPaymentMethod implements RedirectPaymentInterface, HandleStepAdditionalInterface
+class HeidelpaySEPADirectDebit extends HeidelpayPaymentMethod implements
+    RedirectPaymentInterface,
+    HandleStepAdditionalInterface
 {
     use HasMetadata;
+    use HasCustomer;
     use TranslatorTrait;
 
     /**
@@ -55,15 +61,26 @@ public function handleStepAdditional(JTLSmarty $view): void
      * @inheritDoc
      * @return AbstractTransactionType|Charge
      */
-    protected function performTransaction(BasePaymentType $payment, $order): AbstractTransactionType
+    protected function performTransaction(BasePaymentType $payment, Bestellung $order): AbstractTransactionType
     {
-        return $this->adapter->getApi()->charge(
+        // Create / Update existing customer resource if needed
+        $customer = $this->createOrFetchHeidelpayCustomer($this->adapter, $this->sessionHelper, false);
+
+        if ($customer->getId()) {
+            $customer = $this->adapter->getCurrentConnection()->updateCustomer($customer);
+        }
+
+        $charge = new Charge(
             $this->getTotalPriceCustomerCurrency($order),
-            $order->Waehrung->cISO,
+            $order->Waehrung->getCode(),
+            $this->getReturnURL($order)
+        );
+        $charge->setOrderId($order->cBestellNr ?? null);
+
+        return $this->adapter->getCurrentConnection()->performCharge(
+            $charge,
             $payment->getId(),
-            $this->getReturnURL($order),
-            null,
-            $order->cBestellNr ?? null,
+            $customer,
             $this->createMetadata()
         );
     }
diff --git a/paymentmethod/HeidelpaySEPADirectDebitGuaranteed.php b/paymentmethod/HeidelpaySEPADirectDebitGuaranteed.php
index db4c691..a1e648b 100644
--- a/paymentmethod/HeidelpaySEPADirectDebitGuaranteed.php
+++ b/paymentmethod/HeidelpaySEPADirectDebitGuaranteed.php
@@ -1,4 +1,5 @@
 <?php
+
 declare(strict_types=1);
 
 namespace Plugin\s360_unzer_shop5\paymentmethod;
@@ -38,7 +39,10 @@
  *
  * @see https://docs.heidelpay.com/docs/sepa-direct-debit-payment
  */
-class HeidelpaySEPADirectDebitGuaranteed extends HeidelpayPaymentMethod implements RedirectPaymentInterface, HandleStepAdditionalInterface, CancelableInterface
+class HeidelpaySEPADirectDebitGuaranteed extends HeidelpayPaymentMethod implements
+    RedirectPaymentInterface,
+    HandleStepAdditionalInterface,
+    CancelableInterface
 {
     use HasBasket;
     use HasCustomer;
@@ -61,7 +65,13 @@ public function cancelPaymentTransaction(
         AbstractTransactionType $transaction,
         Bestellung $order
     ): Cancellation {
-        return $transaction->cancel(null, CancelReasonCodes::REASON_CODE_CANCEL);
+        $reference = str_replace(
+            ['%ORDER_ID%', '%SHOPNAME%'],
+            [$order->cBestellNr, Shop::getSettingValue(CONF_GLOBAL, 'global_shopname')],
+            $this->trans(Config::LANG_CANCEL_PAYMENT_REFERENCE)
+        );
+
+        return $transaction->cancel(null, CancelReasonCodes::REASON_CODE_CANCEL, $reference);
     }
 
     /**
@@ -72,6 +82,7 @@ public function cancelPaymentTransaction(
      */
     public function handleStepAdditional(JTLSmarty $view): void
     {
+        $this->adapter->getConnectionForSession();
         $shopCustomer = $this->sessionHelper->getFrontendSession()->getCustomer();
         $customer = $this->createOrFetchHeidelpayCustomer(
             $this->adapter,
@@ -148,7 +159,7 @@ protected function performTransaction(BasePaymentType $payment, $order): Abstrac
 
         // Update existing customer resource if needed
         if ($customer->getId()) {
-            $customer = $this->adapter->getApi()->updateCustomer($customer);
+            $customer = $this->adapter->getCurrentConnection()->updateCustomer($customer);
             $this->debugLog('Updated Customer Resource: ' . $customer->jsonSerialize(), static::class);
         }
 
@@ -158,17 +169,21 @@ protected function performTransaction(BasePaymentType $payment, $order): Abstrac
             $session->getCart(),
             $order->Waehrung,
             $session->getLanguage(),
-            $payment->getId()
+            $order->cBestellNr ?? $payment->getId()
         );
         $this->debugLog('Basket Resource: ' . $basket->jsonSerialize(), static::class);
 
-        return $this->adapter->getApi()->charge(
+        $charge = new Charge(
             $this->getTotalPriceCustomerCurrency($order),
-            $order->Waehrung->cISO,
+            $order->Waehrung->getCode(),
+            $this->getReturnURL($order)
+        );
+        $charge->setOrderId($order->cBestellNr ?? null);
+
+        return $this->adapter->getCurrentConnection()->performCharge(
+            $charge,
             $payment->getId(),
-            $this->getReturnURL($order),
             $customer,
-            $order->cBestellNr ?? null,
             $this->createMetadata(),
             $basket
         );
diff --git a/paymentmethod/HeidelpaySofort.php b/paymentmethod/HeidelpaySofort.php
index de3fca9..4add54e 100644
--- a/paymentmethod/HeidelpaySofort.php
+++ b/paymentmethod/HeidelpaySofort.php
@@ -1,13 +1,16 @@
 <?php
+
 declare(strict_types=1);
 
 namespace Plugin\s360_unzer_shop5\paymentmethod;
 
+use JTL\Checkout\Bestellung;
 use UnzerSDK\Resources\PaymentTypes\BasePaymentType;
 use UnzerSDK\Resources\TransactionTypes\AbstractTransactionType;
 use UnzerSDK\Resources\TransactionTypes\Charge;
 use Plugin\s360_unzer_shop5\src\Payments\HeidelpayPaymentMethod;
 use Plugin\s360_unzer_shop5\src\Payments\Interfaces\RedirectPaymentInterface;
+use Plugin\s360_unzer_shop5\src\Payments\Traits\HasCustomer;
 use Plugin\s360_unzer_shop5\src\Payments\Traits\HasMetadata;
 
 /**
@@ -28,20 +31,32 @@
 class HeidelpaySofort extends HeidelpayPaymentMethod implements RedirectPaymentInterface
 {
     use HasMetadata;
+    use HasCustomer;
 
     /**
      * @inheritDoc
      * @return AbstractTransactionType|Charge
      */
-    protected function performTransaction(BasePaymentType $payment, $order): AbstractTransactionType
+    protected function performTransaction(BasePaymentType $payment, Bestellung $order): AbstractTransactionType
     {
-        return $this->adapter->getApi()->charge(
+        // Create / Update existing customer resource if needed
+        $customer = $this->createOrFetchHeidelpayCustomer($this->adapter, $this->sessionHelper, false);
+
+        if ($customer->getId()) {
+            $customer = $this->adapter->getCurrentConnection()->updateCustomer($customer);
+        }
+
+        $charge = new Charge(
             $this->getTotalPriceCustomerCurrency($order),
-            $order->Waehrung->cISO,
+            $order->Waehrung->getCode(),
+            $this->getReturnURL($order)
+        );
+        $charge->setOrderId($order->cBestellNr ?? null);
+
+        return $this->adapter->getCurrentConnection()->performCharge(
+            $charge,
             $payment->getId(),
-            $this->getReturnURL($order),
-            null,
-            $order->cBestellNr ?? null,
+            $customer,
             $this->createMetadata()
         );
     }
diff --git a/paymentmethod/HeidelpayWeChatPay.php b/paymentmethod/HeidelpayWeChatPay.php
index 4f304e5..e3178d0 100644
--- a/paymentmethod/HeidelpayWeChatPay.php
+++ b/paymentmethod/HeidelpayWeChatPay.php
@@ -1,13 +1,16 @@
 <?php
+
 declare(strict_types=1);
 
 namespace Plugin\s360_unzer_shop5\paymentmethod;
 
+use JTL\Checkout\Bestellung;
 use UnzerSDK\Resources\PaymentTypes\BasePaymentType;
 use UnzerSDK\Resources\TransactionTypes\AbstractTransactionType;
 use UnzerSDK\Resources\TransactionTypes\Charge;
 use Plugin\s360_unzer_shop5\src\Payments\HeidelpayPaymentMethod;
 use Plugin\s360_unzer_shop5\src\Payments\Interfaces\RedirectPaymentInterface;
+use Plugin\s360_unzer_shop5\src\Payments\Traits\HasCustomer;
 use Plugin\s360_unzer_shop5\src\Payments\Traits\HasMetadata;
 
 /**
@@ -23,20 +26,32 @@
 class HeidelpayWeChatPay extends HeidelpayPaymentMethod implements RedirectPaymentInterface
 {
     use HasMetadata;
+    use HasCustomer;
 
     /**
      * @inheritDoc
      * @return AbstractTransactionType|Charge
      */
-    protected function performTransaction(BasePaymentType $payment, $order): AbstractTransactionType
+    protected function performTransaction(BasePaymentType $payment, Bestellung $order): AbstractTransactionType
     {
-        return $this->adapter->getApi()->charge(
+        // Create / Update existing customer resource if needed
+        $customer = $this->createOrFetchHeidelpayCustomer($this->adapter, $this->sessionHelper, false);
+
+        if ($customer->getId()) {
+            $customer = $this->adapter->getCurrentConnection()->updateCustomer($customer);
+        }
+
+        $charge = new Charge(
             $this->getTotalPriceCustomerCurrency($order),
-            $order->Waehrung->cISO,
+            $order->Waehrung->getCode(),
+            $this->getReturnURL($order)
+        );
+        $charge->setOrderId($order->cBestellNr ?? null);
+
+        return $this->adapter->getCurrentConnection()->performCharge(
+            $charge,
             $payment->getId(),
-            $this->getReturnURL($order),
-            null,
-            $order->cBestellNr ?? null,
+            $customer,
             $this->createMetadata()
         );
     }
diff --git a/paymentmethod/HeidelpayiDEAL.php b/paymentmethod/HeidelpayiDEAL.php
index dc4adf9..4983cba 100644
--- a/paymentmethod/HeidelpayiDEAL.php
+++ b/paymentmethod/HeidelpayiDEAL.php
@@ -1,13 +1,16 @@
 <?php
+
 declare(strict_types=1);
 
 namespace Plugin\s360_unzer_shop5\paymentmethod;
 
+use JTL\Checkout\Bestellung;
 use UnzerSDK\Resources\PaymentTypes\BasePaymentType;
 use UnzerSDK\Resources\TransactionTypes\AbstractTransactionType;
 use UnzerSDK\Resources\TransactionTypes\Charge;
 use Plugin\s360_unzer_shop5\src\Payments\HeidelpayPaymentMethod;
 use Plugin\s360_unzer_shop5\src\Payments\Interfaces\RedirectPaymentInterface;
+use Plugin\s360_unzer_shop5\src\Payments\Traits\HasCustomer;
 use Plugin\s360_unzer_shop5\src\Payments\Traits\HasMetadata;
 
 /**
@@ -29,20 +32,32 @@
 class HeidelpayiDEAL extends HeidelpayPaymentMethod implements RedirectPaymentInterface
 {
     use HasMetadata;
+    use HasCustomer;
 
     /**
      * @inheritDoc
      * @return AbstractTransactionType|Charge
      */
-    protected function performTransaction(BasePaymentType $payment, $order): AbstractTransactionType
+    protected function performTransaction(BasePaymentType $payment, Bestellung $order): AbstractTransactionType
     {
-        return $this->adapter->getApi()->charge(
+        // Create / Update existing customer resource if needed
+        $customer = $this->createOrFetchHeidelpayCustomer($this->adapter, $this->sessionHelper, false);
+
+        if ($customer->getId()) {
+            $customer = $this->adapter->getCurrentConnection()->updateCustomer($customer);
+        }
+
+        $charge = new Charge(
             $this->getTotalPriceCustomerCurrency($order),
-            $order->Waehrung->cISO,
+            $order->Waehrung->getCode(),
+            $this->getReturnURL($order)
+        );
+        $charge->setOrderId($order->cBestellNr ?? null);
+
+        return $this->adapter->getCurrentConnection()->performCharge(
+            $charge,
             $payment->getId(),
-            $this->getReturnURL($order),
-            null,
-            $order->cBestellNr ?? null,
+            $customer,
             $this->createMetadata()
         );
     }
diff --git a/paymentmethod/UnzerApplePay.php b/paymentmethod/UnzerApplePay.php
new file mode 100644
index 0000000..f54613d
--- /dev/null
+++ b/paymentmethod/UnzerApplePay.php
@@ -0,0 +1,142 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Plugin\s360_unzer_shop5\paymentmethod;
+
+use Exception;
+use JTL\Shop;
+use JTL\Smarty\JTLSmarty;
+use Plugin\s360_unzer_shop5\src\ApplePay\CertificationService;
+use UnzerSDK\Resources\PaymentTypes\BasePaymentType;
+use UnzerSDK\Resources\TransactionTypes\AbstractTransactionType;
+use UnzerSDK\Resources\TransactionTypes\Charge;
+use Plugin\s360_unzer_shop5\src\Payments\HeidelpayPaymentMethod;
+use Plugin\s360_unzer_shop5\src\Payments\Interfaces\HandleStepAdditionalInterface;
+use Plugin\s360_unzer_shop5\src\Payments\Traits\HasBasket;
+use Plugin\s360_unzer_shop5\src\Payments\Traits\HasCustomer;
+use Plugin\s360_unzer_shop5\src\Payments\Traits\HasMetadata;
+use Plugin\s360_unzer_shop5\src\Utils\Config;
+
+/**
+ * Unzer Apple Pay Payment Method.
+ *
+ * Apple Pay is a mobile wallet solution available to all users of Apple devices.
+ *
+ * @see https://docs.unzer.com/payment-methods/applepay/
+ */
+class UnzerApplePay extends HeidelpayPaymentMethod implements HandleStepAdditionalInterface
+{
+    use HasCustomer;
+    use HasMetadata;
+    use HasBasket;
+
+    /**
+     * @param JTLSmarty $view
+     * @return void
+     */
+    public function handleStepAdditional(JTLSmarty $view): void
+    {
+        $data = $view->getTemplateVars('hpPayment') ?: [];
+        $session = $this->sessionHelper->getFrontendSession();
+        $countryCode = end(explode('-', $data['locale']));
+
+        $data['snippets'] = [
+            'NOT_SUPPORTED' => $this->plugin->getLocalization()->getTranslation(Config::LANG_APPLE_PAY_NOT_SUPPORTED)
+                                ?? Config::LANG_APPLE_PAY_NOT_SUPPORTED,
+            'CANCEL_BY_USER' => $this->plugin->getLocalization()->getTranslation(Config::LANG_APPLE_PAY_CANCEL_BY_USER)
+                                ?? Config::LANG_APPLE_PAY_CANCEL_BY_USER
+        ];
+
+        $data['paymentRequest'] = [
+            'countryCode'          => $countryCode,
+            'currencyCode'         => $session->getCurrency()->getCode(),
+            'supportedNetworks'    => ['visa', 'masterCard'],
+            'merchantCapabilities' => ['supports3DS'],
+            'total'                => [
+                'label'  =>  Shop::getSettingValue(\CONF_GLOBAL, 'global_shopname'),
+                'amount' => round($session->getCart()->gibGesamtsummeWaren(true), 2),
+            ],
+            'lineItems' => $this->createApplePayLineItems(
+                $session->getCart(),
+                $session->getCurrency(),
+                $session->getLanguage()
+            ),
+        ];
+
+        $view->assign('hpPayment', $data);
+    }
+
+    /**
+     * Checks if apple pay method is fully configured
+     *
+     * @param array $args
+     * @return boolean
+     */
+    public function isValidIntern($args = []): bool
+    {
+        try {
+            /** @var CertificationService $certService */
+            $certService = Shop::Container()->get(CertificationService::class);
+
+            /** @var Config $config */
+            $config = Shop::Container()->get(Config::class);
+
+            $merchantId = $config->get(Config::APPLEPAY_MERCHANT_IDENTIFIER);
+            $merchantDomain = $config->get(Config::APPLEPAY_MERCHANT_DOMAIN);
+            $merchantCert = $certService->get(Config::APPLEPAY_MERCHANT_SIGNED_PEM);
+            $merchantPrivateKey = $certService->get(Config::APPLEPAY_MERCHANT_PRIVATE_KEY);
+            $paymentCert = $certService->get(Config::APPLEPAY_PAYMENT_SIGNED_PEM);
+            $paymentPrivateKey = $certService->get(Config::APPLEPAY_PAYMENT_PRIVATE_KEY);
+
+            if (
+                empty($merchantId) || empty($merchantDomain) ||
+                empty($merchantCert) || empty($merchantPrivateKey) ||
+                empty($paymentCert) || empty($paymentPrivateKey)
+            ) {
+                $this->debugLog('ApplePay Payment Method not fully configured', self::class);
+                return false;
+            }
+        } catch (Exception $exc) {
+            $this->errorLog(
+                'An error occured while validating apple pay payment method: ' . $exc->getMessage(),
+                self::class
+            );
+
+            return false;
+        }
+
+        return parent::isValidIntern($args);
+    }
+
+    /**
+     * @inheritDoc
+     * @return AbstractTransactionType|Charge
+     */
+    protected function performTransaction(BasePaymentType $payment, $order): AbstractTransactionType
+    {
+        // Create a customer with shipping address for Paypal's Buyer Protection
+        $customer = $this->createOrFetchHeidelpayCustomer($this->adapter, $this->sessionHelper, false);
+        $customer->setShippingAddress($this->createHeidelpayAddress($order->Lieferadresse));
+        $customer->setBillingAddress($this->createHeidelpayAddress($order->oRechnungsadresse));
+
+        // Update existing customer resource if needed
+        if ($customer->getId()) {
+            $customer = $this->adapter->getCurrentConnection()->updateCustomer($customer);
+        }
+
+        $charge = new Charge(
+            $this->getTotalPriceCustomerCurrency($order),
+            $order->Waehrung->getCode(),
+            $this->getReturnURL($order)
+        );
+        $charge->setOrderId($order->cBestellNr ?? null);
+
+        return $this->adapter->getCurrentConnection()->performCharge(
+            $charge,
+            $payment->getId(),
+            $customer,
+            $this->createMetadata()
+        );
+    }
+}
diff --git a/paymentmethod/UnzerBancontact.php b/paymentmethod/UnzerBancontact.php
new file mode 100644
index 0000000..2a3a582
--- /dev/null
+++ b/paymentmethod/UnzerBancontact.php
@@ -0,0 +1,80 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Plugin\s360_unzer_shop5\paymentmethod;
+
+use JTL\Shop;
+use JTL\Smarty\JTLSmarty;
+use UnzerSDK\Resources\PaymentTypes\BasePaymentType;
+use UnzerSDK\Resources\TransactionTypes\AbstractTransactionType;
+use UnzerSDK\Resources\TransactionTypes\Charge;
+use Plugin\s360_unzer_shop5\src\Payments\HeidelpayPaymentMethod;
+use Plugin\s360_unzer_shop5\src\Payments\Interfaces\HandleStepAdditionalInterface;
+use Plugin\s360_unzer_shop5\src\Payments\Interfaces\RedirectPaymentInterface;
+use Plugin\s360_unzer_shop5\src\Payments\Traits\HasCustomer;
+use Plugin\s360_unzer_shop5\src\Payments\Traits\HasMetadata;
+use Plugin\s360_unzer_shop5\src\Utils\Config;
+
+/**
+ * Bancontact
+ *
+ * @package Plugin\s360_unzer_shop5\paymentmethod
+ */
+class UnzerBancontact extends HeidelpayPaymentMethod implements RedirectPaymentInterface, HandleStepAdditionalInterface
+{
+    use HasCustomer;
+    use HasMetadata;
+
+    /**
+     * Pass Styling Options to template
+     *
+     * @param JTLSmarty $view
+     * @return void
+     */
+    public function handleStepAdditional(JTLSmarty $view): void
+    {
+        /** @var Config $config */
+        $config = Shop::Container()->get(Config::class);
+        $data = $view->getTemplateVars('hpPayment') ?: [];
+
+        $data['styling'] = [
+            Config::FONT_COLOR  => $config->get(Config::FONT_COLOR),
+            Config::FONT_FAMILY => $config->get(Config::FONT_FAMILY),
+            Config::FONT_SIZE   => $config->get(Config::FONT_SIZE),
+        ];
+
+        $view->assign('hpPayment', $data);
+    }
+
+    /**
+     * @inheritDoc
+     * @return AbstractTransactionType|Charge
+     */
+    protected function performTransaction(BasePaymentType $payment, $order): AbstractTransactionType
+    {
+        // Create a customer with shipping address for Paypal's Buyer Protection
+        $customer = $this->createOrFetchHeidelpayCustomer($this->adapter, $this->sessionHelper, false);
+        $customer->setShippingAddress($this->createHeidelpayAddress($order->Lieferadresse));
+        $customer->setBillingAddress($this->createHeidelpayAddress($order->oRechnungsadresse));
+
+        // Update existing customer resource if needed
+        if ($customer->getId()) {
+            $customer = $this->adapter->getCurrentConnection()->updateCustomer($customer);
+        }
+
+        $charge = new Charge(
+            $this->getTotalPriceCustomerCurrency($order),
+            $order->Waehrung->getCode(),
+            $this->getReturnURL($order)
+        );
+        $charge->setOrderId($order->cBestellNr ?? null);
+
+        return $this->adapter->getCurrentConnection()->performCharge(
+            $charge,
+            $payment->getId(),
+            $customer,
+            $this->createMetadata()
+        );
+    }
+}
diff --git a/paymentmethod/UnzerPaylaterDirectDebit.php b/paymentmethod/UnzerPaylaterDirectDebit.php
new file mode 100644
index 0000000..e885b41
--- /dev/null
+++ b/paymentmethod/UnzerPaylaterDirectDebit.php
@@ -0,0 +1,216 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Plugin\s360_unzer_shop5\paymentmethod;
+
+use DateTime;
+use JTL\Checkout\Bestellung;
+use JTL\Checkout\Lieferadresse;
+use JTL\Shop;
+use JTL\Smarty\JTLSmarty;
+use Plugin\s360_unzer_shop5\src\Payments\HeidelpayPaymentMethod;
+use Plugin\s360_unzer_shop5\src\Payments\Interfaces\CancelableInterface;
+use Plugin\s360_unzer_shop5\src\Payments\Interfaces\HandleStepAdditionalInterface;
+use Plugin\s360_unzer_shop5\src\Payments\Interfaces\HandleStepReviewOrderInterface;
+use Plugin\s360_unzer_shop5\src\Payments\Traits\HasBasket;
+use Plugin\s360_unzer_shop5\src\Payments\Traits\HasCustomer;
+use Plugin\s360_unzer_shop5\src\Payments\Traits\HasMetadata;
+use Plugin\s360_unzer_shop5\src\Payments\Traits\SupportsB2B;
+use Plugin\s360_unzer_shop5\src\Utils\Config;
+use Plugin\s360_unzer_shop5\src\Utils\SessionHelper;
+use UnzerSDK\Resources\EmbeddedResources\RiskData;
+use UnzerSDK\Resources\Payment;
+use UnzerSDK\Resources\PaymentTypes\BasePaymentType;
+use UnzerSDK\Resources\TransactionTypes\AbstractTransactionType;
+use UnzerSDK\Resources\TransactionTypes\Authorization;
+use UnzerSDK\Resources\TransactionTypes\Cancellation;
+use UnzerSDK\Resources\TransactionTypes\Charge;
+
+class UnzerPaylaterDirectDebit extends HeidelpayPaymentMethod implements
+    HandleStepAdditionalInterface,
+    HandleStepReviewOrderInterface,
+    CancelableInterface
+{
+    use HasMetadata;
+    use HasCustomer;
+    use HasBasket;
+    use SupportsB2B;
+
+    /**
+     * Cancel the Charge or authorization
+     *
+     * @param Payment $payment
+     * @param Charge|Authorization $transaction
+     * @param Bestellung $order
+     * @return Cancellation
+     */
+    public function cancelPaymentTransaction(
+        Payment $payment,
+        AbstractTransactionType $transaction,
+        Bestellung $order
+    ): Cancellation {
+        $api = $this->adapter->getConnectionForOrder($order);
+
+        $reference = str_replace(
+            ['%ORDER_ID%', '%SHOPNAME%'],
+            [$order->cBestellNr, Shop::getSettingValue(CONF_GLOBAL, 'global_shopname')],
+            $this->trans(Config::LANG_CANCEL_PAYMENT_REFERENCE)
+        );
+
+        $cancel = (new Cancellation($transaction->getAmount()))->setPaymentReference($reference);
+
+        // Cancel before charge (reversal)
+        if ($transaction instanceof Authorization) {
+            return $api->cancelAuthorizedPayment($payment, $cancel);
+        }
+
+        // Cancel after charge (refund)
+        return $api->cancelChargedPayment($payment, $cancel);
+    }
+
+    /**
+     * Save the payment reference and some other bank data.
+     *
+     * @param Bestellung $order
+     * @param Authorization $transaction
+     * @return array
+     */
+    public function getOrderAttributes(Bestellung $order, AbstractTransactionType $transaction): array
+    {
+        return [
+            self::ATTR_IBAN                   => $transaction->getIban(),
+            self::ATTR_BIC                    => $transaction->getBic(),
+            self::ATTR_TRANSACTION_DESCRIPTOR => $transaction->getDescriptor(),
+            self::ATTR_ACCOUNT_HOLDER         => $transaction->getHolder()
+        ];
+    }
+
+    /**
+     * Different billing and shipping address is allowed, BUT first and last name should be the same.
+     *
+     * @return bool
+     */
+    public function isSelectable(): bool
+    {
+        // @see: https://unz.atlassian.net/browse/S360-21?focusedCommentId=322832
+        // if (isset($_SESSION['Bestellung']->kLieferadresse) && $_SESSION['Bestellung']->kLieferadresse == -1) {
+        //     /** @var Lieferadresse $shipping */
+        //     $shipping = $this->sessionHelper->getFrontendSession()->get('Lieferadresse');
+        //     $billing = $this->sessionHelper->getFrontendSession()->getCustomer();
+
+        //     if ($shipping->cVorname !== $billing->cVorname || $shipping->cNachname !== $billing->cNachname) {
+        //         $this->debugLog(
+        //             'Hide Unzer Paylater Direct Debit as the names for shipping and billing address are different.',
+        //             static::class
+        //         );
+        //         return false;
+        //     }
+        // }
+        if (
+            $this->isB2BCustomer($this->sessionHelper->getFrontendSession()->getCustomer()) ||
+            $this->sessionHelper->getFrontendSession()->getCurrency()->getCode() !== 'EUR'
+        ) {
+            return false;
+        }
+
+        return parent::isSelectable();
+    }
+
+    /**
+     * Add Customer Resource to view.
+     *
+     * @param JTLSmarty $view
+     * @return void
+     */
+    public function handleStepAdditional(JTLSmarty $view): void
+    {
+        $this->adapter->getConnectionForSession();
+        $shopCustomer = $this->sessionHelper->getFrontendSession()->getCustomer();
+        $customer = $this->createOrFetchHeidelpayCustomer(
+            $this->adapter,
+            $this->sessionHelper,
+            $this->isB2BCustomer($shopCustomer)
+        );
+        $customer->setShippingAddress(
+            $this->createHeidelpayAddress(
+                $this->sessionHelper->getFrontendSession()->get('Lieferadresse')
+            )
+        );
+
+        $data = $view->getTemplateVars('hpPayment') ?: [];
+        $data['customer'] = $customer;
+        $data['isB2B'] = $this->isB2BCustomer($shopCustomer);
+
+        $view->assign('hpPayment', $data);
+    }
+
+    /**
+     * Generate and add threat metrix id (fraud prevention).
+     *
+     * @param JTLSmarty $view
+     * @return null|string
+     */
+    public function handleStepReviewOrder(JTLSmarty $view): ?string
+    {
+        $data = $view->getTemplateVars('hpPayment') ?: [];
+        $data['threatMetrixId'] = $this->sessionHelper->generateThreatMetrixId();
+        $view->assign('hpPayment', $data);
+
+        return 'template/partials/_threatMetrix';
+    }
+
+    protected function performTransaction(BasePaymentType $payment, Bestellung $order): AbstractTransactionType
+    {
+        // Create or fetch customer resource
+        $shopCustomer = $this->sessionHelper->getFrontendSession()->getCustomer();
+        $customer = $this->createOrFetchHeidelpayCustomer(
+            $this->adapter,
+            $this->sessionHelper,
+            $this->isB2BCustomer($shopCustomer)
+        );
+        $customer->setShippingAddress($this->createHeidelpayAddress($order->Lieferadresse));
+        $customer->setBillingAddress($this->createHeidelpayAddress($order->oRechnungsadresse));
+        $this->debugLog('Customer Resource: ' . $customer->jsonSerialize(), static::class);
+
+        // Update existing customer resource if needed
+        if ($customer->getId()) {
+            $customer = $this->adapter->getCurrentConnection()->updateCustomer($customer);
+            $this->debugLog('Updated Customer Resource: ' . $customer->jsonSerialize(), static::class);
+        }
+
+        // Create Basket
+        $session = $this->sessionHelper->getFrontendSession();
+        $basket = $this->createHeidelpayBasket(
+            $session->getCart(),
+            $order->Waehrung,
+            $session->getLanguage(),
+            $order->cBestellNr ?? $payment->getId()
+        );
+        $this->debugLog('Basket Resource: ' . $basket->jsonSerialize(), static::class);
+
+        // Authorize Transaction
+        $riskData = (new RiskData())
+            ->setThreatMetrixId($this->sessionHelper->get(SessionHelper::KEY_THREAT_METRIX_ID))
+            ->setRegistrationLevel($shopCustomer->nRegistriert == '1' ? '1' : '0')
+            ->setRegistrationDate(
+                DateTime::createFromFormat('Y-m-d', $shopCustomer->dErstellt ?? date('Y-m-d'))->format('Ymd')
+            );
+
+        $authorization = new Authorization(
+            $this->getTotalPriceCustomerCurrency($order),
+            $order->Waehrung->getCode(),
+            $this->getReturnURL($order)
+        );
+        $authorization->setOrderId($order->cBestellNr ?? null);
+        $authorization->setRiskData($riskData);
+
+        return $this->adapter->getCurrentConnection()->performAuthorization(
+            $authorization,
+            $payment->getId(),
+            $customer,
+            $this->createMetadata(),
+            $basket
+        );
+    }
+}
diff --git a/paymentmethod/UnzerPaylaterInstallment.php b/paymentmethod/UnzerPaylaterInstallment.php
new file mode 100644
index 0000000..49bd088
--- /dev/null
+++ b/paymentmethod/UnzerPaylaterInstallment.php
@@ -0,0 +1,293 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Plugin\s360_unzer_shop5\paymentmethod;
+
+use DateTime;
+use JTL\Cart\Cart;
+use JTL\Checkout\Bestellung;
+use JTL\Checkout\ZahlungsInfo;
+use JTL\Helpers\Text;
+use JTL\Session\Frontend;
+use JTL\Shop;
+use JTL\Smarty\JTLSmarty;
+use Plugin\s360_unzer_shop5\src\Payments\HeidelpayPaymentMethod;
+use Plugin\s360_unzer_shop5\src\Payments\Interfaces\CancelableInterface;
+use Plugin\s360_unzer_shop5\src\Payments\Interfaces\HandleStepAdditionalInterface;
+use Plugin\s360_unzer_shop5\src\Payments\Interfaces\HandleStepReviewOrderInterface;
+use Plugin\s360_unzer_shop5\src\Payments\PaymentHandler;
+use Plugin\s360_unzer_shop5\src\Payments\Traits\HasBasket;
+use Plugin\s360_unzer_shop5\src\Payments\Traits\HasCustomer;
+use Plugin\s360_unzer_shop5\src\Payments\Traits\HasMetadata;
+use Plugin\s360_unzer_shop5\src\Payments\Traits\SupportsB2B;
+use Plugin\s360_unzer_shop5\src\Utils\Config;
+use Plugin\s360_unzer_shop5\src\Utils\SessionHelper;
+use UnzerSDK\Resources\EmbeddedResources\RiskData;
+use UnzerSDK\Resources\PaymentTypes\BasePaymentType;
+use UnzerSDK\Resources\TransactionTypes\AbstractTransactionType;
+use UnzerSDK\Resources\Payment;
+use UnzerSDK\Resources\TransactionTypes\Authorization;
+use UnzerSDK\Resources\TransactionTypes\Cancellation;
+
+class UnzerPaylaterInstallment extends HeidelpayPaymentMethod implements
+    HandleStepAdditionalInterface,
+    HandleStepReviewOrderInterface,
+    CancelableInterface
+{
+    use HasMetadata;
+    use HasCustomer;
+    use HasBasket;
+    use SupportsB2B;
+
+    /**
+     * Cancel the Charge or authorization
+     *
+     * @param Payment $payment
+     * @param Charge|Authorization $transaction
+     * @param Bestellung $order
+     * @return Cancellation
+     */
+    public function cancelPaymentTransaction(
+        Payment $payment,
+        AbstractTransactionType $transaction,
+        Bestellung $order
+    ): Cancellation {
+        $api = $this->adapter->getConnectionForOrder($order);
+
+        $reference = str_replace(
+            ['%ORDER_ID%', '%SHOPNAME%'],
+            [$order->cBestellNr, Shop::getSettingValue(CONF_GLOBAL, 'global_shopname')],
+            $this->trans(Config::LANG_CANCEL_PAYMENT_REFERENCE)
+        );
+
+        $cancel = (new Cancellation($transaction->getAmount()))->setPaymentReference($reference);
+
+        // Cancel before charge (reversal)
+        if ($transaction instanceof Authorization) {
+            return $api->cancelAuthorizedPayment($payment, $cancel);
+        }
+
+        // Cancel after charge (refund)
+        return $api->cancelChargedPayment($payment, $cancel);
+    }
+
+    /**
+     * Data the merchant needs to put on the Invoice.
+     *
+     * The information iban, bic, descriptor and holder data must be be stated on the invoice
+     * so that the customer can make the bank transfer.
+     *
+     * The customer should be informed that he should use the descriptor during online banking transfer.
+     * This is the identifier that links the payment to the customer.
+     *
+     * We also save this data as payment info (tzahlungsinfo) to it is easily accessible.
+     *
+     * @param Bestellung $order
+     * @param Authorization $transaction
+     * @return array
+     */
+    public function getOrderAttributes(Bestellung $order, AbstractTransactionType $transaction): array
+    {
+        // save payment information
+        $oPaymentInfo = new ZahlungsInfo(0, $order->kBestellung);
+        $oPaymentInfo->kKunde            = $order->kKunde;
+        $oPaymentInfo->kBestellung       = $order->kBestellung;
+        $oPaymentInfo->cInhaber          = Text::convertUTF8($transaction->getHolder() ?? '');
+        $oPaymentInfo->cIBAN             = Text::convertUTF8($transaction->getIban() ?? '');
+        $oPaymentInfo->cBIC              = Text::convertUTF8($transaction->getBic() ?? '');
+        $oPaymentInfo->cKontoNr          = $oPaymentInfo->cIBAN;
+        $oPaymentInfo->cBLZ              = $oPaymentInfo->cBIC;
+        $oPaymentInfo->cVerwendungszweck = Text::convertUTF8($transaction->getDescriptor() ?? '');
+        $oPaymentInfo->cBankName         = '';
+        $oPaymentInfo->cKartenNr         = '';
+        $oPaymentInfo->cCVV              = '';
+
+        isset($oPaymentInfo->kZahlungsInfo) ? $oPaymentInfo->updateInDB() : $oPaymentInfo->insertInDB();
+
+        return [
+            self::ATTR_IBAN                   => $oPaymentInfo->cIBAN,
+            self::ATTR_BIC                    => $oPaymentInfo->cBIC,
+            self::ATTR_TRANSACTION_DESCRIPTOR => $oPaymentInfo->cVerwendungszweck,
+            self::ATTR_ACCOUNT_HOLDER         => $oPaymentInfo->cInhaber,
+        ];
+    }
+
+    /**
+     * Only allow B2C Customers
+     */
+    public function isSelectable(): bool
+    {
+        $shopCustomer = $this->sessionHelper->getFrontendSession()->getCustomer();
+        return !$this->isB2BCustomer($shopCustomer) && parent::isSelectable();
+    }
+
+    /**
+     * Load data for installment
+     *
+     * @inheritDoc
+     */
+    public function handleStepAdditional(JTLSmarty $view): void
+    {
+        $this->adapter->getConnectionForSession();
+        $shopCustomer = $this->sessionHelper->getFrontendSession()->getCustomer();
+        $customer = $this->createOrFetchHeidelpayCustomer(
+            $this->adapter,
+            $this->sessionHelper,
+            $this->isB2BCustomer($shopCustomer)
+        );
+        $customer->setShippingAddress(
+            $this->createHeidelpayAddress(
+                $this->sessionHelper->getFrontendSession()->get('Lieferadresse')
+            )
+        );
+        $customer->setBillingAddress(
+            $this->createHeidelpayAddress($this->sessionHelper->getFrontendSession()->getCustomer())
+        );
+
+        $data = $view->getTemplateVars('hpPayment') ?: [];
+        $data['customer'] = $customer;
+        $data['amount'] = round(
+            $this->sessionHelper->getFrontendSession()->getCart()->gibGesamtsummeWaren(true)
+            * Frontend::getCurrency()->getConversionFactor(),
+            2
+        );
+        $data['currency'] = $this->sessionHelper->getFrontendSession()->getCurrency()->getCode();
+        $data['country'] = $customer->getBillingAddress()->getCountry() ?? 'DE';
+
+        $view->assign('hpPayment', $data);
+    }
+
+    /**
+     * Save customer resource id in the session.
+     *
+     * @SuppressWarnings(PHPMD.Superglobals)
+     * @return bool
+     */
+    public function validateAdditional(): bool
+    {
+        $postPaymentData = $_POST['paymentData'] ?? [];
+
+        // Save Customer ID if it exists
+        if (isset($postPaymentData['customerId'])) {
+            $this->sessionHelper->set(SessionHelper::KEY_CUSTOMER_ID, $postPaymentData['customerId']);
+
+            // Save Basket Checksum + currency
+            $this->sessionHelper->set(
+                SessionHelper::KEY_CART_CHECKSUM,
+                Cart::getChecksum($this->sessionHelper->getFrontendSession()->getCart())
+            );
+            $this->sessionHelper->set(
+                SessionHelper::KEY_CART_CURRENCY,
+                $this->sessionHelper->getFrontendSession()->getCurrency()->getCode()
+            );
+
+            return true && parent::validateAdditional();
+        }
+
+        return parent::validateAdditional();
+    }
+
+    /**
+     * Generate and add threat metrix id (fraud prevention).
+     *
+     * @param JTLSmarty $view
+     * @return null|string
+     */
+    public function handleStepReviewOrder(JTLSmarty $view): ?string
+    {
+        $data = $view->getTemplateVars('hpPayment') ?: [];
+        $data['threatMetrixId'] = $this->sessionHelper->generateThreatMetrixId();
+        $view->assign('hpPayment', $data);
+
+        // Check if basket changed
+        $currency = $this->sessionHelper->getFrontendSession()->getCurrency();
+        $basket = $this->sessionHelper->getFrontendSession()->getCart();
+
+        if (
+            Cart::getChecksum($basket) !== $this->sessionHelper->get(SessionHelper::KEY_CART_CHECKSUM) ||
+            $currency->getCode() !== $this->sessionHelper->get(SessionHelper::KEY_CART_CURRENCY)
+        ) {
+            $this->sessionHelper->clearCheckoutSession();
+            $this->sessionHelper->clear(SessionHelper::KEY_CART_CHECKSUM);
+            $this->sessionHelper->clear(SessionHelper::KEY_CART_CURRENCY);
+            $this->sessionHelper->addErrorAlert(
+                'Aborting Checkout. Currency or Basket mismatch. Reauthorization needed!',
+                $this->trans(Config::LANG_CONFIRMATION_CHECKSUM),
+                'basketMismatch',
+                PaymentHandler::REDIRECT_TO_PAYMENT_SELECTION_URL,
+                static::class
+            );
+
+            return null;
+        }
+
+        return 'template/partials/_threatMetrix';
+    }
+
+    /**
+     * Authorizes the order on unzer side.
+     *
+     * With a successful authorize transaction, the amount is authorized and a payment resource is created.
+     * At this point no money has been transferred.
+     *
+     * The charge transaction calls are made when the order is shipped.
+     * With a successful charge transaction, the amount has been prepared to be insured.
+     *
+     * @inheritDoc
+     * @return AbstractTransactionType|Authorization
+     */
+    protected function performTransaction(BasePaymentType $payment, Bestellung $order): AbstractTransactionType
+    {
+        // Create or fetch customer resource
+        $shopCustomer = $this->sessionHelper->getFrontendSession()->getCustomer();
+        $customer = $this->createOrFetchHeidelpayCustomer(
+            $this->adapter,
+            $this->sessionHelper,
+            $this->isB2BCustomer($shopCustomer)
+        );
+        $customer->setShippingAddress($this->createHeidelpayAddress($order->Lieferadresse));
+        $customer->setBillingAddress($this->createHeidelpayAddress($order->oRechnungsadresse));
+        $this->debugLog('Customer Resource: ' . $customer->jsonSerialize(), static::class);
+
+        // Update existing customer resource if needed
+        if ($customer->getId()) {
+            $customer = $this->adapter->getCurrentConnection()->updateCustomer($customer);
+            $this->debugLog('Updated Customer Resource: ' . $customer->jsonSerialize(), static::class);
+        }
+
+        // Create Basket
+        $session = $this->sessionHelper->getFrontendSession();
+        $basket = $this->createHeidelpayBasket(
+            $session->getCart(),
+            $order->Waehrung,
+            $session->getLanguage(),
+            $order->cBestellNr ?? $payment->getId()
+        );
+        $this->debugLog('Basket Resource: ' . $basket->jsonSerialize(), static::class);
+
+        // Authorize Transaction
+        $riskData = (new RiskData())
+            ->setThreatMetrixId($this->sessionHelper->get(SessionHelper::KEY_THREAT_METRIX_ID))
+            ->setRegistrationLevel($shopCustomer->nRegistriert == '1' ? '1' : '0')
+            ->setRegistrationDate(
+                DateTime::createFromFormat('Y-m-d', $shopCustomer->dErstellt ?? date('Y-m-d'))->format('Ymd')
+            );
+
+        $authorization = new Authorization(
+            $this->getTotalPriceCustomerCurrency($order),
+            $order->Waehrung->getCode(),
+            $this->getReturnURL($order)
+        );
+        $authorization->setOrderId($order->cBestellNr ?? null);
+        $authorization->setRiskData($riskData);
+
+        return $this->adapter->getCurrentConnection()->performAuthorization(
+            $authorization,
+            $payment->getId(),
+            $customer,
+            $this->createMetadata(),
+            $basket
+        );
+    }
+}
diff --git a/paymentmethod/UnzerPaylaterInvoice.php b/paymentmethod/UnzerPaylaterInvoice.php
new file mode 100644
index 0000000..4bc28d4
--- /dev/null
+++ b/paymentmethod/UnzerPaylaterInvoice.php
@@ -0,0 +1,309 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Plugin\s360_unzer_shop5\paymentmethod;
+
+use DateTime;
+use JTL\Checkout\Bestellung;
+use JTL\Checkout\Lieferadresse;
+use JTL\Checkout\ZahlungsInfo;
+use JTL\Helpers\Text;
+use JTL\Shop;
+use JTL\Smarty\JTLSmarty;
+use Plugin\s360_unzer_shop5\src\Payments\HeidelpayPaymentMethod;
+use Plugin\s360_unzer_shop5\src\Payments\Interfaces\CancelableInterface;
+use Plugin\s360_unzer_shop5\src\Payments\Interfaces\HandleStepAdditionalInterface;
+use Plugin\s360_unzer_shop5\src\Payments\Interfaces\HandleStepReviewOrderInterface;
+use Plugin\s360_unzer_shop5\src\Payments\Traits\HasBasket;
+use Plugin\s360_unzer_shop5\src\Payments\Traits\HasCustomer;
+use Plugin\s360_unzer_shop5\src\Payments\Traits\HasMetadata;
+use Plugin\s360_unzer_shop5\src\Payments\Traits\SupportsB2B;
+use Plugin\s360_unzer_shop5\src\Utils\Config;
+use Plugin\s360_unzer_shop5\src\Utils\SessionHelper;
+use stdClass;
+use UnzerSDK\Constants\ShippingTypes;
+use UnzerSDK\Resources\EmbeddedResources\RiskData;
+use UnzerSDK\Resources\PaymentTypes\BasePaymentType;
+use UnzerSDK\Resources\TransactionTypes\AbstractTransactionType;
+use UnzerSDK\Resources\TransactionTypes\Authorization;
+use UnzerSDK\Resources\Payment;
+use UnzerSDK\Resources\TransactionTypes\Cancellation;
+use UnzerSDK\Resources\TransactionTypes\Charge;
+
+class UnzerPaylaterInvoice extends HeidelpayPaymentMethod implements
+    HandleStepAdditionalInterface,
+    HandleStepReviewOrderInterface,
+    CancelableInterface
+{
+    use HasMetadata;
+    use HasCustomer;
+    use HasBasket;
+    use SupportsB2B;
+
+    /**
+     * Cancel the Charge or authorization
+     *
+     * @param Payment $payment
+     * @param Charge|Authorization $transaction
+     * @param Bestellung $order
+     * @return Cancellation
+     */
+    public function cancelPaymentTransaction(
+        Payment $payment,
+        AbstractTransactionType $transaction,
+        Bestellung $order
+    ): Cancellation {
+        $api = $this->adapter->getConnectionForOrder($order);
+
+        $reference = str_replace(
+            ['%ORDER_ID%', '%SHOPNAME%'],
+            [$order->cBestellNr, Shop::getSettingValue(CONF_GLOBAL, 'global_shopname')],
+            $this->trans(Config::LANG_CANCEL_PAYMENT_REFERENCE)
+        );
+
+        $cancel = (new Cancellation($transaction->getAmount()))->setPaymentReference($reference);
+
+        // Cancel before charge (reversal)
+        if ($transaction instanceof Authorization) {
+            return $api->cancelAuthorizedPayment($payment, $cancel);
+        }
+
+        // Cancel after charge (refund)
+        return $api->cancelChargedPayment($payment, $cancel);
+    }
+
+
+    /**
+     * Data the merchant needs to put on the Invoice.
+     *
+     * The information iban, bic, descriptor and holder data must be be stated on the invoice
+     * so that the customer can make the bank transfer.
+     *
+     * The customer should be informed that he should use the descriptor during online banking transfer.
+     * This is the identifier that links the payment to the customer.
+     *
+     * We also save this data as payment info (tzahlungsinfo) to it is easily accessible.
+     *
+     * @param Bestellung $order
+     * @param Authorization $transaction
+     * @return array
+     */
+    public function getOrderAttributes(Bestellung $order, AbstractTransactionType $transaction): array
+    {
+        // save payment information
+        $oPaymentInfo = new ZahlungsInfo(0, $order->kBestellung);
+        $oPaymentInfo->kKunde            = $order->kKunde;
+        $oPaymentInfo->kBestellung       = $order->kBestellung;
+        $oPaymentInfo->cInhaber          = Text::convertUTF8($transaction->getHolder() ?? '');
+        $oPaymentInfo->cIBAN             = Text::convertUTF8($transaction->getIban() ?? '');
+        $oPaymentInfo->cBIC              = Text::convertUTF8($transaction->getBic() ?? '');
+        $oPaymentInfo->cKontoNr          = $oPaymentInfo->cIBAN;
+        $oPaymentInfo->cBLZ              = $oPaymentInfo->cBIC;
+        $oPaymentInfo->cVerwendungszweck = Text::convertUTF8($transaction->getDescriptor() ?? '');
+        $oPaymentInfo->cBankName         = '';
+        $oPaymentInfo->cKartenNr         = '';
+        $oPaymentInfo->cCVV              = '';
+
+        isset($oPaymentInfo->kZahlungsInfo) ? $oPaymentInfo->updateInDB() : $oPaymentInfo->insertInDB();
+
+        return [
+            self::ATTR_IBAN                   => $oPaymentInfo->cIBAN,
+            self::ATTR_BIC                    => $oPaymentInfo->cBIC,
+            self::ATTR_TRANSACTION_DESCRIPTOR => $oPaymentInfo->cVerwendungszweck,
+            self::ATTR_ACCOUNT_HOLDER         => $oPaymentInfo->cInhaber,
+        ];
+    }
+
+    /**
+     * Add Customer Resource to view.
+     *
+     * @param JTLSmarty $view
+     * @return void
+     */
+    public function handleStepAdditional(JTLSmarty $view): void
+    {
+        $this->adapter->getConnectionForSession();
+        $shopCustomer = $this->sessionHelper->getFrontendSession()->getCustomer();
+        $customer = $this->createOrFetchHeidelpayCustomer(
+            $this->adapter,
+            $this->sessionHelper,
+            $this->isB2BCustomer($shopCustomer)
+        );
+        $customer->setShippingAddress(
+            $this->createHeidelpayAddress(
+                $this->sessionHelper->getFrontendSession()->get('Lieferadresse')
+            )
+        );
+
+        $data = $view->getTemplateVars('hpPayment') ?: [];
+        $data['customer'] = $customer;
+        $data['isB2B'] = $this->isB2BCustomer($shopCustomer);
+
+        $view->assign('hpPayment', $data);
+    }
+
+    /**
+     * Generate and add threat metrix id (fraud prevention).
+     *
+     * @param JTLSmarty $view
+     * @return null|string
+     */
+    public function handleStepReviewOrder(JTLSmarty $view): ?string
+    {
+        $data = $view->getTemplateVars('hpPayment') ?: [];
+        $data['threatMetrixId'] = $this->sessionHelper->generateThreatMetrixId();
+        $view->assign('hpPayment', $data);
+
+        return 'template/partials/_threatMetrix';
+    }
+
+    /**
+     * Save customer resource id in the session.
+     *
+     * Save different billing address in session AND in the DB!
+     *
+     * @SuppressWarnings(PHPMD.Superglobals)
+     * @return bool
+     */
+    public function validateAdditional(): bool
+    {
+        $postPaymentData = $_POST['paymentData'] ?? [];
+
+        // Save Customer ID if it exists
+        if (isset($postPaymentData['customerId'])) {
+            $this->sessionHelper->set(SessionHelper::KEY_CUSTOMER_ID, $postPaymentData['customerId']);
+            $shopCustomer = $this->sessionHelper->getFrontendSession()->getCustomer();
+            $customer = $this->adapter->getConnectionForSession()->fetchCustomer($postPaymentData['customerId']);
+
+            if (!isset($_SESSION['Bestellung'])) {
+                $_SESSION['Bestellung'] = new stdClass();
+            }
+
+            /** @var Lieferadresse $shipping */
+            $shipping = $this->sessionHelper->getFrontendSession()->get('Lieferadresse');
+
+            if ($this->isB2BCustomer($shopCustomer)) {
+                // Split name into first and lastname
+                $names = $this->getNamesFromAddress($customer->getShippingAddress());
+                $shipping->cVorname = $names['firstname'] ?: $shipping->cVorname;
+                $shipping->cNachname = $names['lastname'] ?: $shipping->cNachname;
+                $shipping->cBundesland = $customer->getShippingAddress()->getState();
+                $shipping->cPLZ = $customer->getShippingAddress()->getZip();
+                $shipping->cOrt = $customer->getShippingAddress()->getCity();
+                $shipping->cLand = $customer->getShippingAddress()->getCountry();
+
+                // split street into street and street number
+                $street = $this->getStreetFromAddress($customer->getShippingAddress());
+                $shipping->cHausnummer = $street['number'] ?: $shipping->cHausnummer;
+                $shipping->cStrasse = $street['street'] ?: $shipping->cStrasse;
+            }
+
+            // Update Billing Address
+            // Split name into first and lastname
+            $names = $this->getNamesFromAddress($customer->getBillingAddress());
+            $shopCustomer->cVorname = $names['firstname'] ?: $shopCustomer->cVorname;
+            $shopCustomer->cNachname = $names['lastname'] ?: $shopCustomer->cNachname;
+
+            if ($this->isB2BCustomer($shopCustomer)) {
+                $shopCustomer->cBundesland = $customer->getBillingAddress()->getState();
+                $shopCustomer->cPLZ = $customer->getBillingAddress()->getZip();
+                $shopCustomer->cOrt = $customer->getBillingAddress()->getCity();
+                $shopCustomer->cLand = $customer->getBillingAddress()->getCountry();
+
+                // split street into street and street number
+                $street = $this->getStreetFromAddress($customer->getBillingAddress());
+                $shopCustomer->cHausnummer = $street['number'] ?: $shopCustomer->cHausnummer;
+                $shopCustomer->cStrasse = $street['street'] ?: $shopCustomer->cStrasse;
+            }
+
+            if ($customer->getShippingAddress()->getShippingType() === ShippingTypes::DIFFERENT_ADDRESS) {
+                // Set kLieferadresse to -1 in the order so that JTL knows to use the delivery address from the session
+                // and not use the billing adress as the delivery address
+                $_SESSION['Bestellung']->kLieferadresse = -1;
+                // $this->sessionHelper->getFrontendSession()->setCustomer($shopCustomer);
+            }
+
+            return true && parent::validateAdditional();
+        }
+
+        return parent::validateAdditional();
+    }
+
+    /**
+     * Authorizes the order on unzer side.
+     *
+     * With a successful authorize transaction, the amount is authorized and a payment resource is created.
+     * At this point no money has been transferred.
+     *
+     * The charge transaction calls are made when the order is shipped.
+     * With a successful charge transaction, the amount has been prepared to be insured.
+     *
+     * @inheritDoc
+     * @return AbstractTransactionType|Authorization
+     */
+    protected function performTransaction(BasePaymentType $payment, $order): AbstractTransactionType
+    {
+        // Create or fetch customer resource
+        $shopCustomer = $this->sessionHelper->getFrontendSession()->getCustomer();
+        $customer = $this->createOrFetchHeidelpayCustomer(
+            $this->adapter,
+            $this->sessionHelper,
+            $this->isB2BCustomer($shopCustomer)
+        );
+
+        if ($customer->getShippingAddress()->getStreet() === null) {
+            $customer->setShippingAddress($this->createHeidelpayAddress($order->Lieferadresse));
+        }
+
+        $customer->getBillingAddress()->setShippingType(
+            $order->kLieferadresse == -1 ? ShippingTypes::DIFFERENT_ADDRESS : ShippingTypes::EQUALS_BILLING
+        );
+
+        if ($customer->getBillingAddress()->getStreet() === null) {
+            $customer->setBillingAddress($this->createHeidelpayAddress($order->oRechnungsadresse));
+        }
+
+        $this->debugLog('Customer Resource: ' . $customer->jsonSerialize(), static::class);
+
+        // Update existing customer resource if needed
+        if ($customer->getId()) {
+            $customer = $this->adapter->getCurrentConnection()->updateCustomer($customer);
+            $this->debugLog('Updated Customer Resource: ' . $customer->jsonSerialize(), static::class);
+        }
+
+        // Create Basket
+        $session = $this->sessionHelper->getFrontendSession();
+        $basket = $this->createHeidelpayBasket(
+            $session->getCart(),
+            $order->Waehrung,
+            $session->getLanguage(),
+            $order->cBestellNr ?? $payment->getId()
+        );
+        $this->debugLog('Basket Resource: ' . $basket->jsonSerialize(), static::class);
+
+        // Authorize Transaction
+        $riskData = (new RiskData())
+            ->setThreatMetrixId($this->sessionHelper->get(SessionHelper::KEY_THREAT_METRIX_ID))
+            ->setRegistrationLevel($shopCustomer->nRegistriert == '1' ? '1' : '0')
+            ->setRegistrationDate(
+                DateTime::createFromFormat('Y-m-d', $shopCustomer->dErstellt ?? date('Y-m-d'))->format('Ymd')
+            );
+
+        $authorization = new Authorization(
+            $this->getTotalPriceCustomerCurrency($order),
+            $order->Waehrung->getCode(),
+            $this->getReturnURL($order)
+        );
+        $authorization->setOrderId($order->cBestellNr ?? null);
+        $authorization->setRiskData($riskData);
+
+        return $this->adapter->getCurrentConnection()->performAuthorization(
+            $authorization,
+            $payment->getId(),
+            $customer,
+            $this->createMetadata(),
+            $basket
+        );
+    }
+}
diff --git a/paymentmethod/template/_includes.tpl b/paymentmethod/template/_includes.tpl
index c0d059b..a02cdd6 100644
--- a/paymentmethod/template/_includes.tpl
+++ b/paymentmethod/template/_includes.tpl
@@ -1,7 +1,7 @@
 <link rel="stylesheet" href="https://static.unzer.com/v1/unzer.css" />
-<link rel="stylesheet" href="{$hpPayment.frontendUrl}css/heidelpay.min.css?v={$hpPayment.pluginVersion}" />
+<link rel="stylesheet" href="{$hpPayment.frontendUrl}css/unzer.min.css?v={$hpPayment.pluginVersion}" />
 <script type="text/javascript" src="https://static.unzer.com/v1/unzer.js" defer="defer"></script>
-<script src="{$hpPayment.frontendUrl}js/heidelpay.min.js?v={$hpPayment.pluginVersion}" defer="defer"></script>
+<script src="{$hpPayment.frontendUrl}js/unzer.min.js?v={$hpPayment.pluginVersion}" defer="defer"></script>
 
 <div id="error-container" style="display: none">
     <div class="alert alert-danger"> </div>
diff --git a/paymentmethod/template/alipay_form.tpl b/paymentmethod/template/alipay_form.tpl
index f98c857..9ba5868 100644
--- a/paymentmethod/template/alipay_form.tpl
+++ b/paymentmethod/template/alipay_form.tpl
@@ -4,7 +4,7 @@
 
 <script>
 $(document).ready(function() {
-    var HpPayment = new window.HpPayment('{$hpPayment.config.publicKey}', window.HpPayment.PAYMENT_TYPES.ALIPAY, {
+    var HpPayment = new window.HpPayment('{$hpPayment.publicKey}', window.HpPayment.PAYMENT_TYPES.ALIPAY, {
         submitButton: $('{if $hpPayment.config.selectorSubmitButton}{$hpPayment.config.selectorSubmitButton}{else}#form_payment_extra .submit, #form_payment_extra .submit_once{/if}').get(0),
         locale: '{$hpPayment.locale}',
         autoSubmit: true
diff --git a/paymentmethod/template/applepay.tpl b/paymentmethod/template/applepay.tpl
new file mode 100644
index 0000000..90103d5
--- /dev/null
+++ b/paymentmethod/template/applepay.tpl
@@ -0,0 +1,35 @@
+{include file="{$hpPayment.pluginPath}paymentmethod/template/_includes.tpl"}
+
+<style>
+    .apple-pay-button {
+        display: block;
+        -webkit-appearance: -apple-pay-button;
+        -apple-pay-button-type: buy;
+        -apple-pay-button-style: black;
+    }
+
+    .applePayButtonContainer {
+        position: relative;
+    }
+</style>
+
+<div class="unzerUI form" novalidate>
+    <div class="applePayButtonContainer">
+        <div class="apple-pay-button apple-pay-button-black" lang="{$hpPayment.locale}" role="link" tabindex="0">
+        </div>
+    </div>
+</div>
+
+<script>
+$(document).ready(function() {
+    const applePayPaymentRequest = {json_encode($hpPayment.paymentRequest)};
+    const snippets = {json_encode($hpPayment.snippets)};
+
+    new window.UnzerApplePay('{$hpPayment.publicKey}', applePayPaymentRequest, snippets, {
+        submitButton: $('{if $hpPayment.config.selectorSubmitButton}{$hpPayment.config.selectorSubmitButton}{else}#form_payment_extra .submit, #form_payment_extra .submit_once{/if}').get(0),
+        locale: '{$hpPayment.locale}'
+    });
+});
+</script>
+
+{include file="{$hpPayment.pluginPath}paymentmethod/template/_footer.tpl"}
\ No newline at end of file
diff --git a/paymentmethod/template/bancontact_form.tpl b/paymentmethod/template/bancontact_form.tpl
new file mode 100644
index 0000000..8d9d05d
--- /dev/null
+++ b/paymentmethod/template/bancontact_form.tpl
@@ -0,0 +1,19 @@
+{include file="{$hpPayment.pluginPath}paymentmethod/template/_includes.tpl"}
+
+<div class="unzerUI form" novalidate>
+    <div id="bancontact-holder" class="field"></div>
+</div>
+
+<script>
+$(document).ready(function() {
+    var HpPayment = new window.HpPayment('{$hpPayment.publicKey}', window.HpPayment.PAYMENT_TYPES.BANCONTACT, {
+        submitButton: $('{if $hpPayment.config.selectorSubmitButton}{$hpPayment.config.selectorSubmitButton}{else}#form_payment_extra .submit, #form_payment_extra .submit_once{/if}').get(0),
+        locale: '{$hpPayment.locale}',
+        {if $hpPayment.styling}
+            styling: {json_encode($hpPayment.styling)}
+        {/if}
+    });
+});
+</script>
+
+{include file="{$hpPayment.pluginPath}paymentmethod/template/_footer.tpl"}
\ No newline at end of file
diff --git a/paymentmethod/template/credit_card_form.tpl b/paymentmethod/template/credit_card_form.tpl
index 6dc08ca..54b2516 100644
--- a/paymentmethod/template/credit_card_form.tpl
+++ b/paymentmethod/template/credit_card_form.tpl
@@ -19,7 +19,7 @@
 
 <script>
 $(document).ready(function() {
-    var HpPayment = new window.HpPayment('{$hpPayment.config.publicKey}', window.HpPayment.PAYMENT_TYPES.CARD, {
+    var HpPayment = new window.HpPayment('{$hpPayment.publicKey}', window.HpPayment.PAYMENT_TYPES.CARD, {
         submitButton: $('{if $hpPayment.config.selectorSubmitButton}{$hpPayment.config.selectorSubmitButton}{else}#form_payment_extra .submit, #form_payment_extra .submit_once{/if}').get(0),
         locale: '{$hpPayment.locale}',
         {if $hpPayment.styling}
diff --git a/paymentmethod/template/eps_form.tpl b/paymentmethod/template/eps_form.tpl
index 9d86af5..dc42024 100644
--- a/paymentmethod/template/eps_form.tpl
+++ b/paymentmethod/template/eps_form.tpl
@@ -6,7 +6,7 @@
 
 <script>
 $(document).ready(function() {
-    var HpPayment = new window.HpPayment('{$hpPayment.config.publicKey}', window.HpPayment.PAYMENT_TYPES.EPS, {
+    var HpPayment = new window.HpPayment('{$hpPayment.publicKey}', window.HpPayment.PAYMENT_TYPES.EPS, {
         submitButton: $('{if $hpPayment.config.selectorSubmitButton}{$hpPayment.config.selectorSubmitButton}{else}#form_payment_extra .submit, #form_payment_extra .submit_once{/if}').get(0),
         locale: '{$hpPayment.locale}',
     });
diff --git a/paymentmethod/template/flexipay_direct_form.tpl b/paymentmethod/template/flexipay_direct_form.tpl
index 91fd1e8..ebbc63e 100644
--- a/paymentmethod/template/flexipay_direct_form.tpl
+++ b/paymentmethod/template/flexipay_direct_form.tpl
@@ -4,7 +4,7 @@
 
 <script>
 $(document).ready(function() {
-    var HpPayment = new window.HpPayment('{$hpPayment.config.publicKey}', window.HpPayment.PAYMENT_TYPES.FLEXIPAY_DIRECT, {
+    var HpPayment = new window.HpPayment('{$hpPayment.publicKey}', window.HpPayment.PAYMENT_TYPES.FLEXIPAY_DIRECT, {
         submitButton: $('{if $hpPayment.config.selectorSubmitButton}{$hpPayment.config.selectorSubmitButton}{else}#form_payment_extra .submit, #form_payment_extra .submit_once{/if}').get(0),
         locale: '{$hpPayment.locale}',
         autoSubmit: true
diff --git a/paymentmethod/template/giropay_form.tpl b/paymentmethod/template/giropay_form.tpl
index 42c5ace..ea759e5 100644
--- a/paymentmethod/template/giropay_form.tpl
+++ b/paymentmethod/template/giropay_form.tpl
@@ -4,7 +4,7 @@
 
 <script>
 $(document).ready(function() {
-    var HpPayment = new window.HpPayment('{$hpPayment.config.publicKey}', window.HpPayment.PAYMENT_TYPES.GIROPAY, {
+    var HpPayment = new window.HpPayment('{$hpPayment.publicKey}', window.HpPayment.PAYMENT_TYPES.GIROPAY, {
         submitButton: $('{if $hpPayment.config.selectorSubmitButton}{$hpPayment.config.selectorSubmitButton}{else}#form_payment_extra .submit, #form_payment_extra .submit_once{/if}').get(0),
         locale: '{$hpPayment.locale}',
         autoSubmit: true
diff --git a/paymentmethod/template/hire_purchase_direct_debit_form.tpl b/paymentmethod/template/hire_purchase_direct_debit_form.tpl
index 82acbeb..4fcb58c 100644
--- a/paymentmethod/template/hire_purchase_direct_debit_form.tpl
+++ b/paymentmethod/template/hire_purchase_direct_debit_form.tpl
@@ -7,7 +7,7 @@
 
 <script>
 $(document).ready(function() {
-    var HpPayment = new window.HpPayment('{$hpPayment.config.publicKey}', window.HpPayment.PAYMENT_TYPES.HIRE_PURCHASE, {
+    var HpPayment = new window.HpPayment('{$hpPayment.publicKey}', window.HpPayment.PAYMENT_TYPES.HIRE_PURCHASE, {
         submitButton: $('{if $hpPayment.config.selectorSubmitButton}{$hpPayment.config.selectorSubmitButton}{else}#form_payment_extra .submit, #form_payment_extra .submit_once{/if}').get(0),
         locale: '{$hpPayment.locale}',
         {if empty($hpPayment.customerId) || $hpPayment.customerId == -1}
diff --git a/paymentmethod/template/ideal_form.tpl b/paymentmethod/template/ideal_form.tpl
index e0a1fc9..a608861 100644
--- a/paymentmethod/template/ideal_form.tpl
+++ b/paymentmethod/template/ideal_form.tpl
@@ -6,7 +6,7 @@
 
 <script>
 $(document).ready(function() {
-    var HpPayment = new window.HpPayment('{$hpPayment.config.publicKey}', window.HpPayment.PAYMENT_TYPES.IDEAL, {
+    var HpPayment = new window.HpPayment('{$hpPayment.publicKey}', window.HpPayment.PAYMENT_TYPES.IDEAL, {
         submitButton: $('{if $hpPayment.config.selectorSubmitButton}{$hpPayment.config.selectorSubmitButton}{else}#form_payment_extra .submit, #form_payment_extra .submit_once{/if}').get(0),
         locale: '{$hpPayment.locale}',
     });
diff --git a/paymentmethod/template/invoice_factoring_form.tpl b/paymentmethod/template/invoice_factoring_form.tpl
index 15aaec9..df415ce 100644
--- a/paymentmethod/template/invoice_factoring_form.tpl
+++ b/paymentmethod/template/invoice_factoring_form.tpl
@@ -6,7 +6,7 @@
 
 <script>
 $(document).ready(function() {
-    var HpPayment = new window.HpPayment('{$hpPayment.config.publicKey}', window.HpPayment.PAYMENT_TYPES.INVOICE_FACTORING, {
+    var HpPayment = new window.HpPayment('{$hpPayment.publicKey}', window.HpPayment.PAYMENT_TYPES.INVOICE_FACTORING, {
         submitButton: $('{if $hpPayment.config.selectorSubmitButton}{$hpPayment.config.selectorSubmitButton}{else}#form_payment_extra .submit, #form_payment_extra .submit_once{/if}').get(0),
         locale: '{$hpPayment.locale}',
         {if empty($hpPayment.customerId) || $hpPayment.customerId == -1}
diff --git a/paymentmethod/template/invoice_form.tpl b/paymentmethod/template/invoice_form.tpl
index f824540..2889e47 100644
--- a/paymentmethod/template/invoice_form.tpl
+++ b/paymentmethod/template/invoice_form.tpl
@@ -4,7 +4,7 @@
 
 <script>
 $(document).ready(function() {
-    var HpPayment = new window.HpPayment('{$hpPayment.config.publicKey}', window.HpPayment.PAYMENT_TYPES.INVOICE, {
+    var HpPayment = new window.HpPayment('{$hpPayment.publicKey}', window.HpPayment.PAYMENT_TYPES.INVOICE, {
         submitButton: $('{if $hpPayment.config.selectorSubmitButton}{$hpPayment.config.selectorSubmitButton}{else}#form_payment_extra .submit, #form_payment_extra .submit_once{/if}').get(0),
         locale: '{$hpPayment.locale}',
         autoSubmit: true
diff --git a/paymentmethod/template/invoice_guaranteed_form.tpl b/paymentmethod/template/invoice_guaranteed_form.tpl
index 8bdea06..ca6918c 100644
--- a/paymentmethod/template/invoice_guaranteed_form.tpl
+++ b/paymentmethod/template/invoice_guaranteed_form.tpl
@@ -6,7 +6,7 @@
 
 <script>
 $(document).ready(function() {
-    var HpPayment = new window.HpPayment('{$hpPayment.config.publicKey}', window.HpPayment.PAYMENT_TYPES.INVOICE_GUARANTEED, {
+    var HpPayment = new window.HpPayment('{$hpPayment.publicKey}', window.HpPayment.PAYMENT_TYPES.INVOICE_GUARANTEED, {
         submitButton: $('{if $hpPayment.config.selectorSubmitButton}{$hpPayment.config.selectorSubmitButton}{else}#form_payment_extra .submit, #form_payment_extra .submit_once{/if}').get(0),
         locale: '{$hpPayment.locale}',
         {if empty($hpPayment.customerId) || $hpPayment.customerId == -1}
diff --git a/paymentmethod/template/paylater_direct_debit_form.tpl b/paymentmethod/template/paylater_direct_debit_form.tpl
new file mode 100644
index 0000000..6b691bf
--- /dev/null
+++ b/paymentmethod/template/paylater_direct_debit_form.tpl
@@ -0,0 +1,24 @@
+{include file="{$hpPayment.pluginPath}paymentmethod/template/_includes.tpl"}
+
+<div class="unzerUI form" novalidate>
+    <div id="customer" class="field"></div>
+    <div id="paylater-direct-debit" class="field"></div>
+</div>
+
+<script>
+$(document).ready(function() {
+    var HpPayment = new window.HpPayment('{$hpPayment.publicKey}', window.HpPayment.PAYMENT_TYPES.PAYLATER_DIRECT_DEBIT, {
+        submitButton: $('{if $hpPayment.config.selectorSubmitButton}{$hpPayment.config.selectorSubmitButton}{else}#form_payment_extra .submit, #form_payment_extra .submit_once{/if}').get(0),
+        locale: '{$hpPayment.locale}',
+        {if empty($hpPayment.customerId) || $hpPayment.customerId == -1}
+            customerId: {if !empty($hpPayment.customer->getId())}'{$hpPayment.customer->getId()}'{else}null{/if},
+        {else}
+            customerId: '{$hpPayment.customerId}',
+        {/if}
+        customer: {$hpPayment.customer->jsonSerialize()},
+        isB2B: {json_encode($hpPayment.isB2B)}
+    });
+});
+</script>
+
+{include file="{$hpPayment.pluginPath}paymentmethod/template/_footer.tpl"}
\ No newline at end of file
diff --git a/paymentmethod/template/paylater_installment_form.tpl b/paymentmethod/template/paylater_installment_form.tpl
new file mode 100644
index 0000000..3cdd4bd
--- /dev/null
+++ b/paymentmethod/template/paylater_installment_form.tpl
@@ -0,0 +1,26 @@
+{include file="{$hpPayment.pluginPath}paymentmethod/template/_includes.tpl"}
+
+<div class="unzerUI form" novalidate>
+    <div id="customer" class="field"></div>
+    <div id="paylater-installment"></div>
+</div>
+
+<script>
+$(document).ready(function() {
+    var HpPayment = new window.HpPayment('{$hpPayment.publicKey}', window.HpPayment.PAYMENT_TYPES.PAYLATER_INSTALLMENT, {
+        submitButton: $('{if $hpPayment.config.selectorSubmitButton}{$hpPayment.config.selectorSubmitButton}{else}#form_payment_extra .submit, #form_payment_extra .submit_once{/if}').get(0),
+        locale: '{$hpPayment.locale}',
+        {if empty($hpPayment.customerId) || $hpPayment.customerId == -1}
+            customerId: {if !empty($hpPayment.customer->getId())}'{$hpPayment.customer->getId()}'{else}null{/if},
+        {else}
+            customerId: '{$hpPayment.customerId}',
+        {/if}
+        customer: {$hpPayment.customer->jsonSerialize()},
+        amount: {json_encode($hpPayment.amount)},
+        currency: {json_encode($hpPayment.currency)},
+        country: {json_encode($hpPayment.country)},
+    });
+});
+</script>
+
+{include file="{$hpPayment.pluginPath}paymentmethod/template/_footer.tpl"}
\ No newline at end of file
diff --git a/paymentmethod/template/paylater_invoice_form.tpl b/paymentmethod/template/paylater_invoice_form.tpl
new file mode 100644
index 0000000..e6d70a9
--- /dev/null
+++ b/paymentmethod/template/paylater_invoice_form.tpl
@@ -0,0 +1,24 @@
+{include file="{$hpPayment.pluginPath}paymentmethod/template/_includes.tpl"}
+
+<div class="unzerUI form" novalidate>
+    <div id="customer" class="field"></div>
+    <div id="paylater-invoice"></div>
+</div>
+
+<script>
+$(document).ready(function() {
+    var HpPayment = new window.HpPayment('{$hpPayment.publicKey}', window.HpPayment.PAYMENT_TYPES.PAYLATER_INVOICE, {
+        submitButton: $('{if $hpPayment.config.selectorSubmitButton}{$hpPayment.config.selectorSubmitButton}{else}#form_payment_extra .submit, #form_payment_extra .submit_once{/if}').get(0),
+        locale: '{$hpPayment.locale}',
+        {if empty($hpPayment.customerId) || $hpPayment.customerId == -1}
+            customerId: {if !empty($hpPayment.customer->getId())}'{$hpPayment.customer->getId()}'{else}null{/if},
+        {else}
+            customerId: '{$hpPayment.customerId}',
+        {/if}
+        customer: {$hpPayment.customer->jsonSerialize()},
+        isB2B: {json_encode($hpPayment.isB2B)}
+    });
+});
+</script>
+
+{include file="{$hpPayment.pluginPath}paymentmethod/template/_footer.tpl"}
\ No newline at end of file
diff --git a/paymentmethod/template/paypal_form.tpl b/paymentmethod/template/paypal_form.tpl
index 15558c3..7703c73 100644
--- a/paymentmethod/template/paypal_form.tpl
+++ b/paymentmethod/template/paypal_form.tpl
@@ -6,7 +6,7 @@
 
 <script>
 $(document).ready(function() {
-    var HpPayment = new window.HpPayment('{$hpPayment.config.publicKey}', window.HpPayment.PAYMENT_TYPES.PAYPAL, {
+    var HpPayment = new window.HpPayment('{$hpPayment.publicKey}', window.HpPayment.PAYMENT_TYPES.PAYPAL, {
         submitButton: $('{if $hpPayment.config.selectorSubmitButton}{$hpPayment.config.selectorSubmitButton}{else}#form_payment_extra .submit, #form_payment_extra .submit_once{/if}').get(0),
         locale: '{$hpPayment.locale}'
     });
diff --git a/paymentmethod/template/prepayment_form.tpl b/paymentmethod/template/prepayment_form.tpl
index a20989c..cf62ad5 100644
--- a/paymentmethod/template/prepayment_form.tpl
+++ b/paymentmethod/template/prepayment_form.tpl
@@ -4,7 +4,7 @@
 
 <script>
 $(document).ready(function() {
-    var HpPayment = new window.HpPayment('{$hpPayment.config.publicKey}', window.HpPayment.PAYMENT_TYPES.PREPAYMENT, {
+    var HpPayment = new window.HpPayment('{$hpPayment.publicKey}', window.HpPayment.PAYMENT_TYPES.PREPAYMENT, {
         submitButton: $('{if $hpPayment.config.selectorSubmitButton}{$hpPayment.config.selectorSubmitButton}{else}#form_payment_extra .submit, #form_payment_extra .submit_once{/if}').get(0),
         locale: '{$hpPayment.locale}',
         autoSubmit: true
diff --git a/paymentmethod/template/przelewy24_form.tpl b/paymentmethod/template/przelewy24_form.tpl
index 8530955..02d06c2 100644
--- a/paymentmethod/template/przelewy24_form.tpl
+++ b/paymentmethod/template/przelewy24_form.tpl
@@ -4,7 +4,7 @@
 
 <script>
 $(document).ready(function() {
-    var HpPayment = new window.HpPayment('{$hpPayment.config.publicKey}', window.HpPayment.PAYMENT_TYPES.PRZELEWY24, {
+    var HpPayment = new window.HpPayment('{$hpPayment.publicKey}', window.HpPayment.PAYMENT_TYPES.PRZELEWY24, {
         submitButton: $('{if $hpPayment.config.selectorSubmitButton}{$hpPayment.config.selectorSubmitButton}{else}#form_payment_extra .submit, #form_payment_extra .submit_once{/if}').get(0),
         locale: '{$hpPayment.locale}',
         autoSubmit: true
diff --git a/paymentmethod/template/sepa_form.tpl b/paymentmethod/template/sepa_form.tpl
index 66ba607..3e9f3bf 100644
--- a/paymentmethod/template/sepa_form.tpl
+++ b/paymentmethod/template/sepa_form.tpl
@@ -11,7 +11,7 @@
 
 <script>
 $(document).ready(function() {
-    var HpPayment = new window.HpPayment('{$hpPayment.config.publicKey}', window.HpPayment.PAYMENT_TYPES.SEPA, {
+    var HpPayment = new window.HpPayment('{$hpPayment.publicKey}', window.HpPayment.PAYMENT_TYPES.SEPA, {
         submitButton: $('{if $hpPayment.config.selectorSubmitButton}{$hpPayment.config.selectorSubmitButton}{else}#form_payment_extra .submit, #form_payment_extra .submit_once{/if}').get(0),
         locale: '{$hpPayment.locale}'
     });
diff --git a/paymentmethod/template/sepa_guaranteed_form.tpl b/paymentmethod/template/sepa_guaranteed_form.tpl
index 157500a..f3e1c1d 100644
--- a/paymentmethod/template/sepa_guaranteed_form.tpl
+++ b/paymentmethod/template/sepa_guaranteed_form.tpl
@@ -12,7 +12,7 @@
 
 <script>
 $(document).ready(function() {
-    var HpPayment = new window.HpPayment('{$hpPayment.config.publicKey}', window.HpPayment.PAYMENT_TYPES.SEPA_GUARANTEED, {
+    var HpPayment = new window.HpPayment('{$hpPayment.publicKey}', window.HpPayment.PAYMENT_TYPES.SEPA_GUARANTEED, {
         submitButton: $('{if $hpPayment.config.selectorSubmitButton}{$hpPayment.config.selectorSubmitButton}{else}#form_payment_extra .submit, #form_payment_extra .submit_once{/if}').get(0),
         locale: '{$hpPayment.locale}',
         {if empty($hpPayment.customerId) || $hpPayment.customerId == -1}
diff --git a/paymentmethod/template/sofort_form.tpl b/paymentmethod/template/sofort_form.tpl
index 293b4c4..3c8b9ba 100644
--- a/paymentmethod/template/sofort_form.tpl
+++ b/paymentmethod/template/sofort_form.tpl
@@ -4,7 +4,7 @@
 
 <script>
 $(document).ready(function() {
-    var HpPayment = new window.HpPayment('{$hpPayment.config.publicKey}', window.HpPayment.PAYMENT_TYPES.SOFORT, {
+    var HpPayment = new window.HpPayment('{$hpPayment.publicKey}', window.HpPayment.PAYMENT_TYPES.SOFORT, {
         submitButton: $('{if $hpPayment.config.selectorSubmitButton}{$hpPayment.config.selectorSubmitButton}{else}#form_payment_extra .submit, #form_payment_extra .submit_once{/if}').get(0),
         locale: '{$hpPayment.locale}',
         autoSubmit: true
diff --git a/paymentmethod/template/wechat_form.tpl b/paymentmethod/template/wechat_form.tpl
index 7de401b..ec93bbf 100644
--- a/paymentmethod/template/wechat_form.tpl
+++ b/paymentmethod/template/wechat_form.tpl
@@ -4,7 +4,7 @@
 
 <script>
 $(document).ready(function() {
-    var HpPayment = new window.HpPayment('{$hpPayment.config.publicKey}', window.HpPayment.PAYMENT_TYPES.WECHAT_PAY, {
+    var HpPayment = new window.HpPayment('{$hpPayment.publicKey}', window.HpPayment.PAYMENT_TYPES.WECHAT_PAY, {
         submitButton: $('{if $hpPayment.config.selectorSubmitButton}{$hpPayment.config.selectorSubmitButton}{else}#form_payment_extra .submit, #form_payment_extra .submit_once{/if}').get(0),
         locale: '{$hpPayment.locale}',
         autoSubmit: true
diff --git a/src/ApplePay/ActivateCertificateResource.php b/src/ApplePay/ActivateCertificateResource.php
new file mode 100644
index 0000000..ef6ccc8
--- /dev/null
+++ b/src/ApplePay/ActivateCertificateResource.php
@@ -0,0 +1,50 @@
+<?php
+declare(strict_types = 1);
+
+namespace Plugin\s360_unzer_shop5\src\ApplePay;
+
+use UnzerSDK\Adapter\HttpAdapterInterface;
+use UnzerSDK\Resources\AbstractUnzerResource;
+
+/**
+ * Apple Pay Certificates Resource
+ *
+ * @see https://docs.unzer.com/payment-methods/applepay/applepay-prerequisites/#upload-the-apple-signed-payment-processing-certificate-to-the-unzer-system
+ */
+class ActivateCertificateResource extends AbstractUnzerResource
+{
+    /**
+     * @var string the unzer certificate id
+     */
+    private string $certificate = '';
+
+    /**
+     * @inheritDoc
+     */
+    public function getUri($appendId = true, $httpMethod = HttpAdapterInterface::REQUEST_GET): string
+    {
+        return '/keypair/applepay/certificates/' . $this->getCertificate() . '/activate';
+    }
+
+    /**
+     * Get the unzer certificate id
+     *
+     * @return string
+     */
+    public function getCertificate(): string
+    {
+        return $this->certificate;
+    }
+
+    /**
+     * Set the unzer certificate id
+     *
+     * @param string $certificate  the unzer certificate id
+     * @return self
+     */
+    public function setCertificate(string $certificate): self
+    {
+        $this->certificate = $certificate;
+        return $this;
+    }
+}
diff --git a/src/ApplePay/CertificateException.php b/src/ApplePay/CertificateException.php
new file mode 100644
index 0000000..ff67d70
--- /dev/null
+++ b/src/ApplePay/CertificateException.php
@@ -0,0 +1,29 @@
+<?php
+declare(strict_types = 1);
+
+namespace Plugin\s360_unzer_shop5\src\ApplePay;
+
+use Exception;
+
+class CertificateException extends Exception
+{
+    public const ERROR_ID_LOAD_ERROR = 'LOAD_CERTIFICATE_ERROR';
+    public const ERROR_ID_TRANSFORMATION_ERROR = 'CERTIFICATE_TRANSFORMATION_ERROR';
+
+    private string $errorId;
+
+    /**
+     * @param string $message
+     * @param string|null $errorId
+     */
+    public function __construct(string $message, string $errorId = null)
+    {
+        parent::__construct($message);
+        $this->errorId = empty($errorId) ? $message : $errorId;
+    }
+
+    public function getErrorId(): string
+    {
+        return $this->errorId;
+    }
+}
diff --git a/src/ApplePay/CertificatesResource.php b/src/ApplePay/CertificatesResource.php
new file mode 100644
index 0000000..d528c7e
--- /dev/null
+++ b/src/ApplePay/CertificatesResource.php
@@ -0,0 +1,129 @@
+<?php
+declare(strict_types = 1);
+
+namespace Plugin\s360_unzer_shop5\src\ApplePay;
+
+use UnzerSDK\Adapter\HttpAdapterInterface;
+use UnzerSDK\Resources\AbstractUnzerResource;
+
+/**
+ * Apple Pay Certificates Resource
+ *
+ * @see https://docs.unzer.com/payment-methods/applepay/applepay-prerequisites/#upload-the-apple-signed-payment-processing-certificate-to-the-unzer-system
+ */
+class CertificatesResource extends AbstractUnzerResource
+{
+    /**
+     * @var string The file type extension.
+     */
+    protected string $format = 'PEM';
+
+    /**
+     * @var string The type of the key.
+     */
+    protected string $type = 'certificate';
+
+    /**
+     * @var string The non-encrypted PKCS #8 private key.
+     */
+    protected string $certificate = '';
+
+    /**
+     * @inheritDoc
+     */
+    public function getUri($appendId = true, $httpMethod = HttpAdapterInterface::REQUEST_GET): string
+    {
+        return '/keypair/applepay/certificates';
+    }
+
+    /**
+     * Get the file type extension.
+     *
+     * @return string
+     */
+    public function getFormat(): string
+    {
+        return $this->format;
+    }
+
+    /**
+     * Set the file type extension.
+     *
+     * @param string $format  The file type extension.
+     * @return self
+     */
+    public function setFormat(string $format): self
+    {
+        $this->format = $format;
+
+        return $this;
+    }
+
+    /**
+     * Get the type of the key.
+     *
+     * @return string
+     */
+    public function getType(): string
+    {
+        return $this->type;
+    }
+
+    /**
+     * Set the type of the key.
+     *
+     * @param string $type  The type of the key.
+     * @return self
+     */
+    public function setType(string $type): self
+    {
+        $this->type = $type;
+
+        return $this;
+    }
+
+    /**
+     * Get the non-encrypted PKCS #8 private key.
+     *
+     * @return string
+     */
+    public function getCertificate(): string
+    {
+        return $this->certificate;
+    }
+
+    /**
+     * Set the non-encrypted PKCS #8 private key.
+     *
+     * @param string $certificate  The non-encrypted PKCS #8 private key.
+     * @return self
+     */
+    public function setCertificate(string $certificate): self
+    {
+        $this->certificate = $certificate;
+
+        return $this;
+    }
+
+    /**
+     * Get the private key resource you received after uploading your private key.
+     *
+     * @return string
+     */
+    public function getPrivateKey(): string
+    {
+        return $this->getSpecialParams()['private-key'] ?? '';
+    }
+
+    /**
+     * Set the private key resource you received after uploading your private key.
+     *
+     * @param string $privateKey  The private key resource you received after uploading your private key.
+     * @return self
+     */
+    public function setPrivateKey(string $privateKey): self
+    {
+        return $this->setSpecialParams(['private-key' => $privateKey]);
+        return $this;
+    }
+}
diff --git a/src/ApplePay/CertificationService.php b/src/ApplePay/CertificationService.php
new file mode 100644
index 0000000..179fa3a
--- /dev/null
+++ b/src/ApplePay/CertificationService.php
@@ -0,0 +1,334 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Plugin\s360_unzer_shop5\src\ApplePay;
+
+use JTL\Helpers\Request;
+use JTL\Services\JTL\CryptoServiceInterface;
+use phpseclib3\Crypt\EC;
+use phpseclib3\Crypt\RSA;
+use Plugin\s360_unzer_shop5\src\ApplePay\CertificatesResource;
+use Plugin\s360_unzer_shop5\src\Payments\HeidelpayApiAdapter;
+use Plugin\s360_unzer_shop5\src\Utils\Config;
+use RuntimeException;
+use SplFileInfo;
+use UnzerSDK\Adapter\HttpAdapterInterface;
+use UnzerSDK\Exceptions\UnzerApiException;
+
+/**
+ * Handle Apple Pay Certificates and keys
+ *
+ * @package Plugin\s360_unzer_shop5\src\ApplePay
+ */
+class CertificationService
+{
+    public const CERT_TYPE_PAYMENT_PROCESSING = 'PAYMENT_PROCESSING';
+    public const CERT_TYPE_MARCHANT_VALIDATION = 'MARCHANT_VALIDATION';
+    public const CERT_TYPE_ALL = 'ALL';
+
+    public const CERTS = [
+        Config::APPLEPAY_PAYMENT_ECC_KEY,
+        Config::APPLEPAY_PAYMENT_CSR,
+        Config::APPLEPAY_PAYMENT_SIGNED_PEM,
+        Config::APPLEPAY_MERCHANT_PRIVATE_KEY,
+        Config::APPLEPAY_MERCHANT_CSR,
+        Config::APPLEPAY_MERCHANT_SIGNED_PEM,
+    ];
+
+    private CryptoServiceInterface $cryptoService;
+    private Config $config;
+    private HeidelpayApiAdapter $apiAdapter;
+
+    /**
+     * @param CryptoServiceInterface $cryptoService
+     * @param Config $config
+     * @param HeidelpayApiAdapter $apiAdapter
+     */
+    public function __construct(CryptoServiceInterface $cryptoService, Config $config, HeidelpayApiAdapter $apiAdapter)
+    {
+        $this->cryptoService = $cryptoService;
+        $this->config = $config;
+        $this->apiAdapter = $apiAdapter;
+    }
+
+    /**
+     * Get all certs and keys
+     *
+     * @return array
+     */
+    public function all(): array
+    {
+        $data = [];
+
+        foreach (self::CERTS as $cert) {
+            $data[$cert] = $this->config->get($cert);
+
+            if ($data[$cert]) {
+                $data[$cert] = $this->cryptoService->decryptXTEA($data[$cert]);
+            }
+        }
+
+        return $data;
+    }
+
+    /**
+     * Get a specific decrypted CERT
+     *
+     * @param string $type
+     * @return ?string
+     */
+    public function get(string $type): ?string
+    {
+        $cert = $this->config->get($type);
+
+        if ($cert) {
+            return trim($this->cryptoService->decryptXTEA($cert));
+        }
+
+        return $cert;
+    }
+
+    /**
+     * Set a specific CERT and encrypt it
+     *
+     * @param string $type
+     * @return self
+     */
+    public function set(string $type, string $cert): self
+    {
+        $cert = trim($cert);
+        $this->config->set($type, !empty($cert) ? $this->cryptoService->encryptXTEA($cert) : '');
+        return $this;
+    }
+
+    /**
+     * Refresh certy
+     *
+     * @param string $type Either PAYMENT_PROCESSING, or MARCHANT_VALIDATION or ALL
+     * @return void
+     */
+    public function refresh(string $type = self::CERT_TYPE_ALL): void
+    {
+        /**
+         * Generate Payment Processing Certificate
+         * @see https://docs.unzer.com/payment-methods/applepay/applepay-prerequisites/
+         */
+        if ($type === self::CERT_TYPE_PAYMENT_PROCESSING || $type == self::CERT_TYPE_ALL) {
+            $paymentPrivate = openssl_pkey_new([
+                'private_key_type' => OPENSSL_KEYTYPE_EC,
+                'curve_name' => 'prime256v1'
+            ]);
+            $paymentCsr = openssl_csr_new([], $paymentPrivate, ['digest_alg' => 'sha256']);
+
+            openssl_pkey_export($paymentPrivate, $privateKeyText);
+            openssl_csr_export($paymentCsr, $paymentCsrText);
+
+            $this->set(Config::APPLEPAY_PAYMENT_ECC_KEY, $privateKeyText);
+            $this->set(Config::APPLEPAY_PAYMENT_CSR, $paymentCsrText);
+            $this->set(Config::APPLEPAY_PAYMENT_SIGNED_PEM, '');
+            $this->config->set(Config::APPLEPAY_UNZER_CERTIFICATE_ID, '');
+            $this->config->set(Config::APPLEPAY_UNZER_PRIVATE_KEY_ID, '');
+        }
+
+        /**
+         * Generate Generate a Merchant Identity Certificate
+         * @see https://docs.unzer.com/payment-methods/applepay/applepay-prerequisites/
+         */
+        if ($type === self::CERT_TYPE_MARCHANT_VALIDATION || $type == self::CERT_TYPE_ALL) {
+            $merchantRsa = openssl_pkey_new([
+                'private_key_type' => OPENSSL_KEYTYPE_RSA,
+                'private_key_bits' => 2048,
+                'encrypt_key' => true
+            ]);
+            $merchantCsr = openssl_csr_new([], $merchantRsa);
+
+            openssl_pkey_export($merchantRsa, $rsaText, BLOWFISH_KEY);
+            openssl_csr_export($merchantCsr, $csrText);
+
+            $this->set(Config::APPLEPAY_MERCHANT_PRIVATE_KEY, $rsaText);
+            $this->set(Config::APPLEPAY_MERCHANT_CSR, $csrText);
+            $this->set(Config::APPLEPAY_MERCHANT_SIGNED_PEM, '');
+            $this->set(Config::APPLEPAY_MERCHANT_NON_ENCRYPTED_PRIVATE_KEY, '');
+        }
+
+        $this->config->save();
+    }
+
+    /**
+     * Upload/Save the signed apple pay certs
+     *
+     * @throws UnzerApiException
+     * @throws RuntimeException
+     * @param string|null $paymentCert
+     * @param string|null $merchantCert
+     * @return void
+     */
+    public function save(?string $paymentCert, ?string $merchantCert): void
+    {
+        if ($paymentCert && file_exists($paymentCert)) {
+            // convert cert to text: openssl x509 -inform der -in apple_pay.cer -out apple_pay.pem
+            $paymentPem = $this->transformCertToText(file_get_contents($paymentCert));
+
+            // Only update cert if it changed
+            if ($paymentPem !== $this->get(Config::APPLEPAY_PAYMENT_SIGNED_PEM)) {
+                // Convert your ECC private key to a non-encrypted PKCS #8 private key:
+                // openssl pkcs8 -topk8 -nocrypt -in ecckey.key -out privatekey.key
+                $signedPrivateKey = EC::loadPrivateKey($this->get(Config::APPLEPAY_PAYMENT_ECC_KEY))->toString('PKCS8');
+                $this->set(Config::APPLEPAY_PAYMENT_SIGNED_PEM, $paymentPem);
+                $this->set(Config::APPLEPAY_PAYMENT_PRIVATE_KEY, $signedPrivateKey);
+
+                // Activate the certificate (just to be sure)
+                $this->activateCertificates();
+            }
+        }
+
+        if ($merchantCert && file_exists($merchantCert)) {
+            // convert cert to text: openssl x509 -inform der -in merchant_id.cer -out merchant_id.pem
+            $nonEncryptedKey = '';
+            $merchantPem = $this->transformCertToText(file_get_contents($merchantCert));
+            openssl_pkey_export(
+                $this->get(Config::APPLEPAY_MERCHANT_PRIVATE_KEY),
+                $nonEncryptedKey,
+                BLOWFISH_KEY,
+                [
+                    'private_key_type' => OPENSSL_KEYTYPE_RSA,
+                    'private_key_bits' => 2048,
+                    'encrypt_key' => false
+                ]
+            );
+
+            $this->set(Config::APPLEPAY_MERCHANT_SIGNED_PEM, $merchantPem);
+            $this->set(
+                Config::APPLEPAY_MERCHANT_NON_ENCRYPTED_PRIVATE_KEY,
+                RSA::loadPrivateKey($nonEncryptedKey)->toString('PKCS1')
+            );
+        }
+
+        $this->config->save();
+    }
+
+    /**
+     * Upload and Activate the current certificates in the unzer system
+     *
+     * @return bool
+     */
+    public function activateCertificates(): bool
+    {
+        // Upload signedPrivateKey to unzer
+        $httpService = $this->apiAdapter->getDefaultConnection()->getHttpService();
+        $keypair = new PrivateKeysResource();
+        $keypair->setParentResource($this->apiAdapter->getDefaultConnection());
+        $keypair->setCertificate($this->get(Config::APPLEPAY_PAYMENT_PRIVATE_KEY));
+
+        $response = json_decode(
+            $httpService->send($keypair->getUri(), $keypair, HttpAdapterInterface::REQUEST_POST),
+            true
+        );
+        $this->config->set(Config::APPLEPAY_UNZER_PRIVATE_KEY_ID, $response['id']);
+
+        // Upload signedCert to unzer
+        $cert = new CertificatesResource();
+        $cert->setParentResource($this->apiAdapter->getDefaultConnection());
+        $cert->setPrivateKey($response['id']);
+        $cert->setCertificate($this->get(Config::APPLEPAY_PAYMENT_SIGNED_PEM));
+
+        $response = json_decode(
+            $httpService->send($cert->getUri(), $cert, HttpAdapterInterface::REQUEST_POST),
+            true
+        );
+
+        $this->config->set(Config::APPLEPAY_UNZER_CERTIFICATE_ID, $response['id']);
+
+        // Activate Certificate
+        $httpService = $this->apiAdapter->getDefaultConnection()->getHttpService();
+        $cert = new ActivateCertificateResource();
+        $cert->setParentResource($this->apiAdapter->getDefaultConnection());
+        $cert->setCertificate($this->config->get(Config::APPLEPAY_UNZER_CERTIFICATE_ID));
+
+        $response = json_decode(
+            $httpService->send($cert->getUri(), $cert, HttpAdapterInterface::REQUEST_POST),
+            true
+        );
+
+        if ($response && $response['active']) {
+            return true;
+        }
+
+        return false;
+    }
+
+    /**
+     * Download either PAYMENT_CSR or MERCHANT_CSR.
+     *
+     * @SuppressWarnings(PHPMD.ExitExpression)
+     * @param string $type
+     * @return never
+     */
+    public function download(string $type)
+    {
+        switch ($type) {
+            case Config::APPLEPAY_PAYMENT_CSR:
+                $name = 'ecc.certSigningRequest';
+                break;
+
+            case Config::APPLEPAY_MERCHANT_CSR:
+                $name = 'merchant_id.certSigningRequest';
+                break;
+
+            default:
+                header(Request::makeHTTPHeader(404));
+                exit;
+        }
+
+        $file = trim($this->get($type));
+
+        header('Content-Description: File Transfer');
+        header('Content-Type: text/csr');
+        header('Content-Disposition: attachment; filename="' . $name . '"');
+        header('Expires: 0');
+        header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
+        header('Pragma: public');
+        header('Content-Length: ' . mb_strlen($file, '8bit'));
+        echo $file;
+        exit;
+    }
+
+    /**
+     * Export Certificate to temporary file (to avoid leaking any infos to attackers)
+     *
+     * @throws RuntimeException if tmp file is not writeable
+     * @param string $key
+     * @return SplFileInfo
+     */
+    public function exportToFile(string $key): SplFileInfo
+    {
+        $fileInfo = new SplFileInfo(tempnam('/tmp', 'applepay-'));
+
+        if (!$fileInfo->isWritable()) {
+            throw new RuntimeException('Could not export certificate ' . $key . ' because tmp file is not writable!');
+        }
+
+        $fileObj = $fileInfo->openFile('w+');
+        $fileObj->fwrite($this->get($key));
+
+        return $fileInfo;
+    }
+
+    /**
+     * Transform a certificate to text content
+     *
+     * `openssl x509 -inform der -in apple_pay.cer -out apple_pay.pem`
+     *
+     * @see https://gist.github.com/ajzele/4585931
+     * @param string $certificate
+     * @return string
+     */
+    public function transformCertToText(string $certificate): string
+    {
+        return
+            '-----BEGIN CERTIFICATE-----' . PHP_EOL
+            . chunk_split(base64_encode($certificate), 64, PHP_EOL)
+            . '-----END CERTIFICATE-----' . PHP_EOL;
+    }
+}
diff --git a/src/ApplePay/PrivateKeysResource.php b/src/ApplePay/PrivateKeysResource.php
new file mode 100644
index 0000000..757d6b8
--- /dev/null
+++ b/src/ApplePay/PrivateKeysResource.php
@@ -0,0 +1,107 @@
+<?php
+declare(strict_types = 1);
+
+namespace Plugin\s360_unzer_shop5\src\ApplePay;
+
+use UnzerSDK\Adapter\HttpAdapterInterface;
+use UnzerSDK\Resources\AbstractUnzerResource;
+
+/**
+ * Apple Pay Private Keys Resource
+ *
+ * @see https://docs.unzer.com/payment-methods/applepay/applepay-prerequisites/#step-6-upload-your-pkcs-8-private-key-and-your-payment-processing-certificate-to-the-unzer-system
+ */
+class PrivateKeysResource extends AbstractUnzerResource
+{
+    /**
+     * @var string The file type extension.
+     */
+    protected string $format = 'PEM';
+
+    /**
+     * @var string The type of the key.
+     */
+    protected string $type = 'private-key';
+
+    /**
+     * @var string The non-encrypted PKCS #8 private key.
+     */
+    protected string $certificate = '';
+
+    /**
+     * @inheritDoc
+     */
+    public function getUri($appendId = true, $httpMethod = HttpAdapterInterface::REQUEST_GET): string
+    {
+        return '/keypair/applepay/privatekeys';
+    }
+
+    /**
+     * Get the file type extension.
+     *
+     * @return string
+     */
+    public function getFormat(): string
+    {
+        return $this->format;
+    }
+
+    /**
+     * Set the file type extension.
+     *
+     * @param string $format  The file type extension.
+     * @return self
+     */
+    public function setFormat(string $format): self
+    {
+        $this->format = $format;
+
+        return $this;
+    }
+
+    /**
+     * Get the type of the key.
+     *
+     * @return string
+     */
+    public function getType(): string
+    {
+        return $this->type;
+    }
+
+    /**
+     * Set the type of the key.
+     *
+     * @param string $type  The type of the key.
+     * @return self
+     */
+    public function setType(string $type): self
+    {
+        $this->type = $type;
+
+        return $this;
+    }
+
+    /**
+     * Get the non-encrypted PKCS #8 private key.
+     *
+     * @return string
+     */
+    public function getCertificate(): string
+    {
+        return $this->certificate;
+    }
+
+    /**
+     * Set the non-encrypted PKCS #8 private key.
+     *
+     * @param string $certificate  The non-encrypted PKCS #8 private key.
+     * @return self
+     */
+    public function setCertificate(string $certificate): self
+    {
+        $this->certificate = $certificate;
+
+        return $this;
+    }
+}
diff --git a/src/Charges/ChargeHandler.php b/src/Charges/ChargeHandler.php
index 2f02ceb..f9382ac 100644
--- a/src/Charges/ChargeHandler.php
+++ b/src/Charges/ChargeHandler.php
@@ -1,12 +1,21 @@
 <?php
-declare(strict_types = 1);
+
+declare(strict_types=1);
 
 namespace Plugin\s360_unzer_shop5\src\Charges;
 
+use InvalidArgumentException;
+use JTL\Cart\CartItem;
 use UnzerSDK\Resources\TransactionTypes\Charge;
 use JTL\Checkout\Bestellung;
+use JTL\Helpers\Tax;
+use Plugin\s360_unzer_shop5\src\Orders\OrderMappingEntity;
+use Plugin\s360_unzer_shop5\src\Payments\HeidelpayApiAdapter;
 use Plugin\s360_unzer_shop5\src\Payments\HeidelpayPaymentMethod;
+use Plugin\s360_unzer_shop5\src\Utils\Config;
 use Plugin\s360_unzer_shop5\src\Utils\JtlLoggerTrait;
+use UnzerSDK\Resources\EmbeddedResources\ShippingData;
+use UnzerSDK\Resources\Payment;
 
 /**
  * Charge Handler
@@ -16,17 +25,143 @@ class ChargeHandler
 {
     use JtlLoggerTrait;
 
-    /**
-     * @var ChargeMappingModel
-     */
-    private $model;
+    private ChargeMappingModel $model;
+    private Config $config;
+    private HeidelpayApiAdapter $adapter;
 
-    /**
-     * @param ChargeMappingModel $model
-     */
-    public function __construct(ChargeMappingModel $model)
+    public function __construct(ChargeMappingModel $model, Config $config, HeidelpayApiAdapter $adapter)
     {
         $this->model = $model;
+        $this->config = $config;
+        $this->adapter = $adapter;
+    }
+
+    /**
+     * Make charge calls for shipment
+     *
+     * @param Bestellung $order
+     * @param HeidelpayPaymentMethod $method
+     * @param Payment $payment
+     * @param OrderMappingEntity $entity
+     * @return void
+     */
+    public function chargeOnShipping(
+        Bestellung $order,
+        HeidelpayPaymentMethod $method,
+        Payment $payment,
+        OrderMappingEntity $entity
+    ): void {
+        $amount = 0;
+        $processedDeliveries = array_map(static function (ChargeMappingEntity $entity) {
+            return $entity->getDeliveryId();
+        }, $this->model->getProcessedDeliveries($order->kBestellung));
+
+        $types = [
+            C_WARENKORBPOS_TYP_GUTSCHEIN,
+            C_WARENKORBPOS_TYP_KUPON,
+            C_WARENKORBPOS_TYP_NEUKUNDENKUPON,
+            C_WARENKORBPOS_TYP_VERPACKUNG,
+            C_WARENKORBPOS_TYP_VERSANDPOS,
+            C_WARENKORBPOS_TYP_VERSANDZUSCHLAG,
+            C_WARENKORBPOS_TYP_VERSAND_ARTIKELABHAENGIG,
+        ];
+
+        // Partial Shipment
+        if ($order->cStatus == \BESTELLUNG_STATUS_TEILVERSANDT) {
+            $this->debugLog('Handle partial delivery for order ' . $order->cBestellNr, self::class);
+
+            // Extras (shipping, coupons if no deliveries where processed yet)
+            if (empty($processedDeliveries)) {
+                $this->debugLog(
+                    'Charge extra positions (shipping, coupons, etc.) if existing for order ' . $order->cBestellNr,
+                    self::class
+                );
+
+                foreach ($order->Positionen as $pos) {
+                    if (in_array($pos->nPosTyp, $types, true)) {
+                        $amount += Tax::getGross(
+                            $pos->fPreis * $pos->nAnzahl,
+                            $this->getTaxRate($pos)
+                        );
+                    }
+                }
+            }
+
+            /** @var \JTL\Checkout\Lieferschein $delivery */
+            foreach ($order->oLieferschein_arr as $delivery) {
+                // Skip already processed delivery
+                if (in_array($delivery->getLieferschein(), $processedDeliveries)) {
+                    $this->debugLog(
+                        'Skip delivery `' . $delivery->getLieferschein() . '` as it was already processed',
+                        static::class
+                    );
+
+                    continue;
+                }
+
+                // accumulate delivery positions
+                foreach ($delivery->oPosition_arr as $pos) {
+                    if (!isset($pos->nAusgeliefert)) {
+                        throw new InvalidArgumentException(
+                            'Missing property of nAusgeliefert for order: ' . $order->cBestellNr
+                        );
+                    }
+
+                    if ($pos->nAusgeliefert < 1) {
+                        continue;
+                    }
+
+                    $amount += Tax::getGross(
+                        $pos->fPreis * (int) $pos->nAusgeliefert,
+                        $this->getTaxRate($pos)
+                    );
+                }
+
+                $chargeInstance = new Charge($amount);
+
+                // Shipping Info
+                if (!empty($delivery->oVersand_arr)) {
+                    /** @var \JTL\Checkout\Versand $shipping */
+                    $shipping = current($delivery->oVersand_arr);
+                    $shippingData = (new ShippingData())
+                        ->setDeliveryTrackingId($shipping->getIdentCode())
+                        ->setDeliveryService($shipping->getLogistik());
+                    $chargeInstance->setShipping($shippingData);
+                }
+
+                // Add charge (mark delivery as processed)
+                $amount = 0;
+                $this->addCharge(
+                    $this->adapter->getConnectionForOrder($order)->performChargeOnPayment(
+                        $payment,
+                        $chargeInstance->setInvoiceId($entity->getInvoiceId())
+                    ),
+                    $method,
+                    $order,
+                    $delivery->getLieferschein()
+                );
+            }
+        }
+
+        // Handle Full Delivery (could also be the last part of a partial order)
+        if ($order->cStatus == \BESTELLUNG_STATUS_VERSANDT) {
+            // If there are already processed deliveries this only captures the remaining amount
+            $chargeInstance = new Charge();
+            $this->debugLog(
+                'Handle full delivery for order (could also be the last partial order) ' . $order->cBestellNr,
+                self::class
+            );
+
+            // Add charge (mark delivery as processed)
+            $this->addCharge(
+                $this->adapter->getConnectionForOrder($order)->performChargeOnPayment(
+                    $payment,
+                    $chargeInstance->setInvoiceId($entity->getInvoiceId())
+                ),
+                $method,
+                $order
+            );
+        }
     }
 
     /**
@@ -35,10 +170,15 @@ public function __construct(ChargeMappingModel $model)
      * @param Charge $charge
      * @param HeidelpayPaymentMethod $paymentMethod
      * @param Bestellung $order
+     * @param int|null $deliveryId
      * @return void
      */
-    public function addCharge(Charge $charge, HeidelpayPaymentMethod $paymentMethod, Bestellung $order): void
-    {
+    public function addCharge(
+        Charge $charge,
+        HeidelpayPaymentMethod $paymentMethod,
+        Bestellung $order,
+        ?int $deliveryId = null
+    ): void {
         // Charge is already marked as incoming payment -> skip!
         if ($this->model->getChargeForOrder((int) $order->kBestellung, $charge->getId())) {
             $paymentMethod->doLog(
@@ -51,19 +191,28 @@ public function addCharge(Charge $charge, HeidelpayPaymentMethod $paymentMethod,
 
         if ($charge->isSuccess()) {
             // Add Incoming Payment
-            $paymentMethod->addIncomingPayment($order, (object) [
-                'fBetrag'  => $charge->getAmount(),
-                'cISO'     => $charge->getCurrency(),
-                'cHinweis' => $charge->getUniqueId() ?? $charge->getPaymentId() ?? $charge->getId()
-            ]);
+            if ($this->config->get(Config::ADD_INCOMING_PAYMENTS, true)) {
+                $paymentMethod->addIncomingPayment($order, (object) [
+                    'fBetrag'  => $charge->getAmount(),
+                    'cISO'     => $charge->getCurrency(),
+                    'cHinweis' => $charge->getShortId() ?? $charge->getUniqueId()
+                                    ?? $charge->getPaymentId() ?? $charge->getId()
+                ]);
+            }
 
             // Save Charge in mapping table
-            $entity = new ChargeMappingEntity;
+            $entity = new ChargeMappingEntity();
             $entity->setOrderId((int) $order->kBestellung);
             $entity->setPaymentId($charge->getPaymentId());
             $entity->setChargeId($charge->getId());
+            $entity->setDeliveryId($deliveryId);
 
             $this->model->save($entity);
+
+            $this->debugLog(
+                'Charge was successfull: ' . print_r($charge->jsonSerialize(), true),
+                static::class
+            );
             return;
         }
 
@@ -94,11 +243,43 @@ public function addCharge(Charge $charge, HeidelpayPaymentMethod $paymentMethod,
      */
     public function markAsPaid(HeidelpayPaymentMethod $paymentMethod, Bestellung $order): void
     {
-        $this->debugLog(
-            'No remaining amount to capture. Mark order ' . $order->cBestellNr . ' as paid.',
-            static::class
-        );
-        $paymentMethod->setOrderStatusToPaid($order);
-        $paymentMethod->sendConfirmationMail($order);
+        if ($this->config->get(Config::ADD_INCOMING_PAYMENTS, true)) {
+            $this->debugLog(
+                'No remaining amount to capture. Mark order ' . $order->cBestellNr . ' as paid.',
+                static::class
+            );
+            $paymentMethod->setOrderStatusToPaid($order);
+            $paymentMethod->sendConfirmationMail($order);
+        }
+    }
+
+    /**
+     * Helper for CartItem::getTaxRate() as this does not exist prior to JTL 5.1.0.
+     *
+     * @param CartItem|stdClass $cartItem
+     * @return float
+     */
+    private function getTaxRate($cartItem): float
+    {
+        if (version_compare(APPLICATION_VERSION, '5.1.0', '>=')) {
+            // Try to get accurate taxrate
+            return CartItem::getTaxRate($cartItem);
+        }
+
+        // JTL 5.0.x
+        $taxRate = Tax::getSalesTax(0);
+        if (($cartItem->kSteuerklasse ?? 0) === 0) {
+            if (isset($cartItem->fMwSt)) {
+                $taxRate = $cartItem->fMwSt;
+            } elseif (isset($cartItem->Artikel)) {
+                $taxRate = ($cartItem->Artikel->kSteuerklasse ?? 0) > 0
+                    ? Tax::getSalesTax((int) $cartItem->Artikel->kSteuerklasse)
+                    : $cartItem->Artikel->fMwSt;
+            }
+        } else {
+            $taxRate = Tax::getSalesTax((int) $cartItem->kSteuerklasse);
+        }
+
+        return (float) $taxRate;
     }
 }
diff --git a/src/Charges/ChargeMappingEntity.php b/src/Charges/ChargeMappingEntity.php
index 7609d28..f13683a 100644
--- a/src/Charges/ChargeMappingEntity.php
+++ b/src/Charges/ChargeMappingEntity.php
@@ -1,4 +1,5 @@
 <?php
+
 declare(strict_types = 1);
 
 namespace Plugin\s360_unzer_shop5\src\Charges;
@@ -28,6 +29,11 @@ class ChargeMappingEntity extends Entity
      */
     private $orderId;
 
+    /**
+     * @var int|null JTL Delivery Id (kLieferschein)
+     */
+    private $deliveryId = null;
+
     /**
      * @var Bestellung|null
      */
@@ -43,6 +49,7 @@ public function toObject(): stdClass
         $data->order_id = $this->getOrderId();
         $data->payment_id = $this->getPaymentId();
         $data->charge_id = $this->getChargeId();
+        $data->delivery_id = $this->getDeliveryId();
 
         return $data;
     }
@@ -58,6 +65,7 @@ public static function create(stdClass $data): Entity
         $entity->setOrderId((int) $data->order_id);
         $entity->setPaymentId($data->payment_id);
         $entity->setChargeId($data->charge_id);
+        $entity->setDeliveryId($data->delivery_id ? (int) $data->delivery_id : null);
         return $entity;
     }
 
@@ -152,4 +160,26 @@ public function setOrder(?Bestellung $order): self
         $this->order = $order;
         return $this;
     }
+
+    /**
+     * Get jTL Delivery Id (kLieferschein)
+     *
+     * @return int|null
+     */
+    public function getDeliveryId(): ?int
+    {
+        return $this->deliveryId;
+    }
+
+    /**
+     * Set jTL Delivery Id (kLieferschein)
+     *
+     * @param int|null $deliveryId  JTL Delivery Id (kLieferschein)
+     * @return self
+     */
+    public function setDeliveryId(?int $deliveryId): self
+    {
+        $this->deliveryId = $deliveryId;
+        return $this;
+    }
 }
diff --git a/src/Charges/ChargeMappingModel.php b/src/Charges/ChargeMappingModel.php
index 28d3f39..6ccf552 100644
--- a/src/Charges/ChargeMappingModel.php
+++ b/src/Charges/ChargeMappingModel.php
@@ -73,4 +73,28 @@ public function getChargeForOrder(int $orderId, string $chargeId): ?ChargeMappin
 
         return null;
     }
+
+     /**
+     * Get all charges which are delivered
+     *
+     * @param integer $orderId
+     * @return ChargeMappingEntity[]|array
+     */
+    public function getProcessedDeliveries(int $orderId): array
+    {
+        $rows = $this->database->selectAll($this->getTable(), 'order_id', $orderId);
+
+        if (empty($rows)) {
+            return [];
+        }
+
+        $data = [];
+        foreach ($rows as $row) {
+            if ($row->delivery_id) {
+                $data[] = $this->createEntity($row);
+            }
+        }
+
+        return $data;
+    }
 }
diff --git a/src/Controllers/Admin/AdminApplePayController.php b/src/Controllers/Admin/AdminApplePayController.php
new file mode 100644
index 0000000..a9a0dd2
--- /dev/null
+++ b/src/Controllers/Admin/AdminApplePayController.php
@@ -0,0 +1,168 @@
+<?php declare(strict_types = 1);
+
+namespace Plugin\s360_unzer_shop5\src\Controllers\Admin;
+
+use Exception;
+use JTL\Helpers\Form;
+use JTL\Helpers\Request;
+use Plugin\s360_unzer_shop5\src\ApplePay\CertificateException;
+use Plugin\s360_unzer_shop5\src\ApplePay\CertificationService;
+use Plugin\s360_unzer_shop5\src\Utils\Config;
+use Plugin\s360_unzer_shop5\src\Utils\JtlLinkHelper;
+use RuntimeException;
+use UnzerSDK\Exceptions\UnzerApiException;
+
+/**
+ * Admin Settings Controller
+ *
+ * @package Plugin\s360_unzer_shop5\src\Controllers\Admin
+ */
+class AdminApplePayController extends AdminController
+{
+    /**
+     * @var CertificationService
+     */
+    private $certService;
+
+    /**
+     * @var JtlLinkHelper
+     */
+    private $linkHelper;
+
+    /**
+     * @required
+     * @param CertificationService $certService
+     * @return void
+     */
+    public function setCertService(CertificationService $certService): void
+    {
+        $this->certService = $certService;
+    }
+
+    /**
+     * Add some global setting variables to view.
+     *
+     * @return void
+     */
+    protected function prepare(): void
+    {
+        parent::prepare();
+
+        $this->linkHelper = new JtlLinkHelper;
+        $this->smarty->assign('hpSettings', [
+            'pluginUrl' => $this->linkHelper->getFullAdminUrl(),
+            'formAction' => $this->linkHelper->getFullAdminTabUrl(JtlLinkHelper::ADMIN_TAB_APPLE_PAY)
+        ]);
+    }
+
+    /**
+     * Redirect to url
+     *
+     * @param string $url
+     * @return void
+     */
+    private function redirect(string $url)
+    {
+        header('Location: ' . $url);
+        exit();
+    }
+
+     /**
+     * Handle Config Action.
+     *
+     * @return string
+     */
+    public function handle(): string
+    {
+        if (!$this->certService) {
+            throw new RuntimeException('Did not set dependency CertificationService!');
+        }
+
+        // Save Settings
+        if (Request::postInt('saveApplePaySettings') === 1 && Form::validateToken()) {
+            $paymentCert = null;
+            $merchantCert = null;
+            $paymentFileKey = 'hpSettings-applepay-payment-upload';
+            $merchantFileKey = 'hpSettings-applepay-merchant-upload';
+
+            // Save general settings
+            $this->config->set(
+                Config::APPLEPAY_MERCHANT_IDENTIFIER,
+                Request::postVar('hpSettings-applepay-merchant-id')
+            );
+            $this->config->set(
+                Config::APPLEPAY_MERCHANT_DOMAIN,
+                Request::postVar('hpSettings-applepay-merchant-domain')
+            );
+            $this->config->save();
+
+            // Transform and save the apple pay certificates
+            if ($_FILES[$paymentFileKey] && $_FILES[$paymentFileKey]['error'] == 0) {
+                $paymentCert = $_FILES[$paymentFileKey]['tmp_name'];
+            }
+
+            if ($_FILES[$merchantFileKey] && $_FILES[$merchantFileKey]['error'] == 0) {
+                $merchantCert = $_FILES[$merchantFileKey]['tmp_name'];
+            }
+
+            try {
+                $this->certService->save($paymentCert, $merchantCert);
+            } catch(CertificateException $exc) {
+                $this->errorLog($exc->getMessage(), CertificationService::class);
+                $this->addError(__($exc->getErrorId()));
+            } catch(UnzerApiException $exc) {
+                $this->errorLog($exc->getMerchantMessage(), CertificationService::class);
+                $this->addError($exc->getMerchantMessage());
+            } catch (Exception $exc) {
+                $this->errorLog($exc->getMessage(), CertificationService::class);
+                $this->addError($exc->getMessage());
+            }
+        }
+
+        // Activate the current certificate in the unzer system
+        if (Request::postInt('activateCertificate') === 1 && Form::validateToken()) {
+            try {
+                $this->certService->activateCertificates();
+            } catch(UnzerApiException $exc) {
+                $this->errorLog($exc->getMerchantMessage(), CertificationService::class);
+                $this->addError($exc->getMerchantMessage());
+            } catch (Exception $exc) {
+                $this->errorLog($exc->getMessage(), CertificationService::class);
+                $this->addError($exc->getMessage());
+            }
+        }
+
+        // Download CSR files for the Merchant to upload to Apple
+        if (Request::getVar('download') && Request::getVar('download') == 'payment_processing_certification') {
+            $this->certService->download(Config::APPLEPAY_PAYMENT_CSR);
+        }
+
+        if (Request::getVar('download') && Request::getVar('download') == 'merchant_identity_certification') {
+            $this->certService->download(Config::APPLEPAY_MERCHANT_CSR);
+        }
+
+        // Refresh Payment Processing Certs and Keys
+        // we redirect to avoid issue with accidentally resubmitting when reloading the page
+        if (Request::postInt('refreshPaymentProcessing') === 1 && Form::validateToken()) {
+            $this->certService->refresh(CertificationService::CERT_TYPE_PAYMENT_PROCESSING);
+            $this->redirect($this->linkHelper->getFullAdminTabUrl(JtlLinkHelper::ADMIN_TAB_APPLE_PAY));
+        }
+
+        // Refresh Merchant Validation Certs and Keys
+        // we redirect to avoid issue with accidentally resubmitting when reloading the page
+        if (Request::postInt('refreshMerchantValidation') === 1 && Form::validateToken()) {
+            $this->certService->refresh(CertificationService::CERT_TYPE_MARCHANT_VALIDATION);
+            $this->redirect($this->linkHelper->getFullAdminTabUrl(JtlLinkHelper::ADMIN_TAB_APPLE_PAY));
+        }
+
+        // Load Settings
+        $settings = $this->smarty->getTemplateVars('hpSettings');
+        $settings['merchantId'] = $this->config->get(Config::APPLEPAY_MERCHANT_IDENTIFIER);
+        $settings['merchantDomain'] = $this->config->get(Config::APPLEPAY_MERCHANT_DOMAIN);
+        $settings['unzerCertificateId'] = $this->config->get(Config::APPLEPAY_UNZER_CERTIFICATE_ID);
+        $settings['unzerPrivateKeyId'] = $this->config->get(Config::APPLEPAY_UNZER_PRIVATE_KEY_ID);
+        $settings['certs'] = $this->certService->all();
+
+        return $this->view('template/applepay', ['hpSettings' => $settings]);
+    }
+}
diff --git a/src/Controllers/Admin/AdminController.php b/src/Controllers/Admin/AdminController.php
index ccbe2ce..f3c49e8 100644
--- a/src/Controllers/Admin/AdminController.php
+++ b/src/Controllers/Admin/AdminController.php
@@ -2,6 +2,7 @@
 
 namespace Plugin\s360_unzer_shop5\src\Controllers\Admin;
 
+use JTL\Link\Link;
 use JTL\Plugin\PluginInterface;
 use Plugin\s360_unzer_shop5\src\Controllers\Controller;
 use Plugin\s360_unzer_shop5\src\Utils\JtlLinkHelper;
@@ -64,6 +65,24 @@ protected function prepare(): void
             'pluginVersion'     => (string) $this->plugin->getCurrentVersion()
         ];
 
+        // Check for correct seo urls of frontend links
+        foreach ($this->plugin->getLinks()->getLinks() as $link) {
+            /** @var Link $link */
+            switch ($link->getHandler()) {
+                case 'sync-workflow.php':
+                    if (!in_array('unzer-sync-workflow', $link->getSEOs())) {
+                        $this->addWarning(__('hpWarningSyncWorkflowUrlChanged'));
+                    }
+                    break;
+
+                case 'webhook.php':
+                    if (!in_array('unzer-webhook', $link->getSEOs())) {
+                        $this->addWarning(__('hpWarningWebhookUrlChanged'));
+                    }
+                    break;
+            }
+        }
+
         $this->smarty->assign('hpAdmin', $data);
     }
 
diff --git a/src/Controllers/Admin/AdminKeyPairsController.php b/src/Controllers/Admin/AdminKeyPairsController.php
new file mode 100644
index 0000000..7cb9ea2
--- /dev/null
+++ b/src/Controllers/Admin/AdminKeyPairsController.php
@@ -0,0 +1,160 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Plugin\s360_unzer_shop5\src\Controllers\Admin;
+
+use JTL\Helpers\Form;
+use UnzerSDK\Validators\PrivateKeyValidator;
+use UnzerSDK\Validators\PublicKeyValidator;
+use JTL\Helpers\Request;
+use Plugin\s360_unzer_shop5\src\Controllers\AjaxResponse;
+use Plugin\s360_unzer_shop5\src\Controllers\HasAjaxResponse;
+use Plugin\s360_unzer_shop5\src\KeyPairs\KeyPairEntity;
+use Plugin\s360_unzer_shop5\src\KeyPairs\KeyPairModel;
+use Plugin\s360_unzer_shop5\src\Utils\JtlLinkHelper;
+
+class AdminKeyPairsController extends AdminController implements AjaxResponse
+{
+    use HasAjaxResponse;
+
+    protected KeyPairModel $model;
+    protected JtlLinkHelper $linkHelper;
+    protected array $paymentMethods = [];
+
+    /**
+     * @required
+     */
+    public function setModel(KeyPairModel $model): void
+    {
+        $this->model = $model;
+    }
+
+    /**
+     * Setup linkhelper and payment methods
+     */
+    protected function prepare(): void
+    {
+        parent::prepare();
+
+        $this->linkHelper = new JtlLinkHelper();
+
+        // Get Unzer Payment Methods
+        $methods = $this->plugin->getPaymentMethods()->getMethods();
+        foreach ($methods as $method) {
+            $this->paymentMethods[$method->getMethodID()] = $method;
+        }
+        uasort(
+            $this->paymentMethods,
+            static fn($foo, $bar) => strnatcmp(strtolower(__($foo->getName())), strtolower(__($bar->getName())))
+        );
+    }
+
+    /**
+     * @return never
+     */
+    public function handleAjax(): void
+    {
+        $this->warnings = [];
+        $item = null;
+
+        if (Request::getVar('action') === 'delete' && Form::validateToken() && Request::postInt('id')) {
+            $this->model->delete(Request::postInt('id'));
+            $this->jsonResponse([
+                'status' => self::RESULT_SUCCESS,
+                'listing' => $this->view('template/partials/_keypair_list', [
+                    'unzerKeypairs' => [
+                        'items' => $this->model->all(),
+                        'currencies' => $this->model->getCurrencies(),
+                        'paymentMethods' => $this->paymentMethods,
+                        'url' => $this->linkHelper->getFullAdminTabUrl(JtlLinkHelper::ADMIN_TAB_ORDERS)
+                    ]
+                ])
+            ]);
+        }
+
+        if (Request::postInt('id')) {
+            $item = $this->model->find(Request::postInt('id'));
+        }
+
+        if (Request::getVar('action') === 'save' && Form::validateToken()) {
+            $item = $this->saveKeypair($item);
+        }
+
+        // Response
+        $data =  [
+            'item' => $item,
+            'items' => $this->model->all(),
+            'currencies' => $this->model->getCurrencies(),
+            'paymentMethods' => $this->paymentMethods,
+            'url' => $this->linkHelper->getFullAdminTabUrl(JtlLinkHelper::ADMIN_TAB_ORDERS)
+        ];
+
+        $this->jsonResponse([
+            'status' => self::RESULT_SUCCESS,
+            'listing' => $this->view('template/partials/_keypair_list', [
+                'unzerKeypairs' => $data
+            ]),
+            'template' => $this->view('template/partials/_keypair_item', [
+                'unzerKeypairs' => $data
+            ])
+        ]);
+    }
+
+    public function handle(): string
+    {
+        return $this->view('template/keypairs', [
+            'unzerKeypairs' => [
+                'items' => $this->model->all(),
+                'currencies' => $this->model->getCurrencies(),
+                'paymentMethods' => $this->paymentMethods,
+                'url' => $this->linkHelper->getFullAdminTabUrl(JtlLinkHelper::ADMIN_TAB_ORDERS)
+            ]
+        ]);
+    }
+
+    private function saveKeypair(?KeyPairEntity $item): KeyPairEntity
+    {
+        $privateKey = Request::postVar('privateKey', '');
+        $info = password_get_info($privateKey);
+
+        // If private key is hashed -> no new user input -> use existing one
+        if (!empty($info) && $info['algo'] > 0 && $item) {
+            $privateKey = $item->getPrivateKey();
+        }
+
+        // Validate Keys
+        $valid = true;
+        if (!PrivateKeyValidator::validate($privateKey)) {
+            $this->addError(__('Ungültiger Private Key.'));
+            $valid = false;
+        }
+
+        if (!PublicKeyValidator::validate(Request::postVar('publicKey', ''))) {
+            $this->addError(
+                __('Ungültiger Public Key. Bitte stellen Sie sicher, dass sie hier Ihren Public Key und nicht Ihren Private Key angeben!')
+            );
+            $valid = false;
+        }
+
+        $item = new KeyPairEntity(
+            $privateKey,
+            Request::postVar('publicKey', ''),
+            Request::postVar('isB2B') === 'on' || Request::postVar('isB2B') === 'true',
+            Request::postInt('currency'),
+            Request::postInt('paymentMethod'),
+        );
+
+        if (Request::postInt('id')) {
+            $item->setId(Request::postInt('id'));
+        }
+
+        // Save Model if everything seems valid
+        if ($valid) {
+            $this->model->save($item);
+            $this->addSuccess(__('Die Einstellungen wurden erfolgreich gespeichert.'));
+        }
+
+        return $item;
+    }
+}
diff --git a/src/Controllers/Admin/AdminOrdersController.php b/src/Controllers/Admin/AdminOrdersController.php
index da2e7dd..3bf7f09 100644
--- a/src/Controllers/Admin/AdminOrdersController.php
+++ b/src/Controllers/Admin/AdminOrdersController.php
@@ -1,4 +1,6 @@
-<?php declare(strict_types = 1);
+<?php
+
+declare(strict_types=1);
 
 namespace Plugin\s360_unzer_shop5\src\Controllers\Admin;
 
@@ -7,6 +9,7 @@
 use UnzerSDK\Resources\TransactionTypes\Charge;
 use UnzerSDK\Resources\TransactionTypes\Shipment;
 use InvalidArgumentException;
+use JTL\Catalog\Currency;
 use JTL\Checkout\Bestellung;
 use JTL\Helpers\Request;
 use JTL\Helpers\Text;
@@ -33,15 +36,8 @@ class AdminOrdersController extends AdminController implements AjaxResponse
     public const TEMPLATE_ID_ORDER_DETAIL = 'template/partials/_order_detail';
     public const TEMPLATE_ID_ORDER_ITEM = 'template/partials/_order_item';
 
-    /**
-     * @var OrderMappingModel
-     */
-    private $model;
-
-    /**
-     * @var HeidelpayApiAdapter
-     */
-    private $adapter;
+    private OrderMappingModel $model;
+    private HeidelpayApiAdapter $adapter;
 
     /**
      * Init dependencies
@@ -53,7 +49,8 @@ protected function prepare(): void
         parent::prepare();
 
         // Abort if there are no API keys set yet (probably new install).
-        if (empty($this->config->get(Config::PRIVATE_KEY))
+        if (
+            empty($this->config->get(Config::PRIVATE_KEY))
             || empty($this->config->get(Config::PUBLIC_KEY))
         ) {
             $this->debugLog('Abort Controller. No API Keys set yet.', static::class);
@@ -142,8 +139,10 @@ private function handleGetOrderDetails(): void
             ]);
         }
 
-        $payment = $this->adapter->fetchPayment($orderMapping->getPaymentId());
         $order = new Bestellung($orderMapping->getId(), true);
+        $api = $this->adapter->getConnectionForOrder($order);
+        $payment = $this->adapter->fetchPayment($orderMapping->getPaymentId());
+        $cancellations = [];
 
         // Load Charges, Cancellations and Shipments
         foreach ($payment->getCharges() as $chg) {
@@ -152,7 +151,42 @@ private function handleGetOrderDetails(): void
 
             foreach ($chg->getCancellations() as $cancel) {
                 /** @var Cancellation $cancel */
-                $this->adapter->getApi()->fetchRefundById($payment, $chg->getId(), $cancel->getId());
+                try {
+                    $cancellations[$cancel->getId()] = $cancel;
+                    $api->fetchRefundById($payment, $chg->getId(), $cancel->getId());
+                } catch (UnzerApiException $exc) {
+                    $this->errorLog(
+                        'Error while loading cancellation: ' . $exc->getMerchantMessage()
+                        . ' | Error-Code: ' . $exc->getCode(),
+                        static::class
+                    );
+                }
+            }
+        }
+
+        foreach ($payment->getReversals() as $reversal) {
+            /** @var Cancellation $reversal */
+            try {
+                $cancellations[$reversal->getId()] = $api->fetchPaymentReversal($payment, $reversal->getId());
+            } catch (UnzerApiException $exc) {
+                $this->errorLog(
+                    'Error while loading cancellation: ' . $exc->getMerchantMessage()
+                    . ' | Error-Code: ' . $exc->getCode(),
+                    static::class
+                );
+            }
+        }
+
+        foreach($payment->getRefunds() as $refund) {
+            /** @var Cancellation $refund */
+            try {
+                $cancellations[$refund->getId()] = $api->fetchPaymentRefund($payment, $refund->getId());
+            } catch (UnzerApiException $exc) {
+                $this->errorLog(
+                    'Error while loading cancellation: ' . $exc->getMerchantMessage()
+                    . ' | Error-Code: ' . $exc->getCode(),
+                    static::class
+                );
             }
         }
 
@@ -164,19 +198,23 @@ private function handleGetOrderDetails(): void
         // Update order mapping
         $orderMapping->setOrder($order);
         $orderMapping->setPaymentState($payment->getStateName());
-        $orderMapping->setInvoiceId($payment->getInvoiceId());
+        // $orderMapping->setInvoiceId($payment->getInvoiceId());
         $this->model->save($orderMapping);
 
         // Load View
-        $url = $this->config->getInsightPortalUrl($orderMapping->getTransactionUniqueId());
+        $url = $this->config->getInsightPortalUrl($orderMapping);
+        $orderMapping->setOrder(null);
+
         $this->jsonResponse([
             'status' => self::RESULT_SUCCESS,
             'data'   => new OrderViewStruct(
                 $orderMapping,
                 $this->view(self::TEMPLATE_ID_ORDER_DETAIL, [
+                    'hpOrderMapping' => $orderMapping,
                     'hpOrder'     => $order,
                     'hpPayment'   => $payment,
-                    'hpPortalUrl' => $url
+                    'hpPortalUrl' => $url,
+                    'hpCancellations' => $cancellations
                 ])
             )
         ]);
@@ -198,7 +236,11 @@ private function handleLoadOrders(): void
 
         foreach ($orders as $order) {
             /** @var OrderMappingEntity $order */
-            $url = $this->config->getInsightPortalUrl($order->getTransactionUniqueId());
+            if ($order->getOrder()->kWaehrung > 0) {
+                $order->getOrder()->Waehrung = new Currency((int)$order->getOrder()->kWaehrung);
+            }
+
+            $url = $this->config->getInsightPortalUrl($order);
             $data[] = new OrderViewStruct(
                 $order,
                 $this->view(self::TEMPLATE_ID_ORDER_ITEM, [
diff --git a/src/Controllers/Admin/AdminSettingsController.php b/src/Controllers/Admin/AdminSettingsController.php
index 2da4560..d2ccce6 100644
--- a/src/Controllers/Admin/AdminSettingsController.php
+++ b/src/Controllers/Admin/AdminSettingsController.php
@@ -1,4 +1,6 @@
-<?php declare(strict_types = 1);
+<?php
+
+declare(strict_types=1);
 
 namespace Plugin\s360_unzer_shop5\src\Controllers\Admin;
 
@@ -7,6 +9,7 @@
 use UnzerSDK\Validators\PublicKeyValidator;
 use JTL\Helpers\Request;
 use JTL\Shop;
+use Plugin\s360_unzer_shop5\src\KeyPairs\KeyPairModel;
 use Plugin\s360_unzer_shop5\src\Payments\HeidelpayApiAdapter;
 use Plugin\s360_unzer_shop5\src\Utils\Config;
 use Plugin\s360_unzer_shop5\src\Utils\JtlLinkHelper;
@@ -54,14 +57,22 @@ public function handle(): string
             $this->registerWebhooks($adapter);
         }
 
-        $settings = $this->smarty->get_template_vars('hpSettings');
+        $settings = $this->smarty->getTemplateVars('hpSettings');
         $settings['config'] = $this->config->all();
 
+
         try {
-            /** @var HeidelpayApiAdapter $adapter */
-            $adapter = Shop::Container()->get(HeidelpayApiAdapter::class);
-            $webhooks = $adapter->getApi()->fetchAllWebhooks();
-            $settings['webhooks'] = \count($webhooks);
+            if (
+                empty($this->config->get(Config::PRIVATE_KEY))
+                || empty($this->config->get(Config::PUBLIC_KEY))
+            ) {
+                $settings['webhooks'] = false;
+            } else {
+                /** @var HeidelpayApiAdapter $adapter */
+                $adapter = Shop::Container()->get(HeidelpayApiAdapter::class);
+                $webhooks = $adapter->getCurrentConnection()->fetchAllWebhooks();
+                $settings['webhooks'] = \count($webhooks);
+            }
         } catch (\Exception $exc) {
             $settings['webhooks'] = false;
         }
@@ -76,8 +87,15 @@ public function handle(): string
      */
     protected function handleSaveRequest(): void
     {
+        // If private key is hashed -> no new user input -> use existing one
+        $privateKey = Request::postVar('privateKey');
+        $info = password_get_info($privateKey);
+        if (!empty($info) && $info['algo'] > 0) {
+            $privateKey = $this->config->get(Config::PRIVATE_KEY);
+        }
+
         // Set Config
-        $this->config->set(Config::PRIVATE_KEY, Request::postVar('privateKey'));
+        $this->config->set(Config::PRIVATE_KEY, $privateKey);
         $this->config->set(Config::PUBLIC_KEY, Request::postVar('publicKey'));
         $this->config->set(Config::MERCHANT_ID, Request::postVar('merchantId'));
         $this->config->set(Config::FONT_SIZE, Request::postVar('fontSize'));
@@ -100,22 +118,31 @@ protected function handleSaveRequest(): void
             Config::PQ_METHOD_PAYMENT_INFORMATION,
             Request::postVar('pqMethodPaymentInformation')
         );
+        $this->config->set(
+            Config::PQ_SELECTOR_INSTALMENT_INFO,
+            Request::postVar('pqSelectorInstalmentInfo')
+        );
+        $this->config->set(
+            Config::PQ_METHOD_INSTALMENT_INFO,
+            Request::postVar('pqMethodInstalmentInfo')
+        );
         $this->config->set(Config::PQ_SELECTOR_ERRORS, Request::postVar('pqSelectorErrors'));
         $this->config->set(Config::PQ_METHOD_ERRORS, Request::postVar('pqMethodErrors'));
         $this->config->set(Config::PQ_SELECTOR_REVIEW_STEP, Request::postVar('pqSelectorReviewStep'));
         $this->config->set(Config::PQ_METHOD_REVIEW_STEP, Request::postVar('pqMethodReviewStep'));
+        $this->config->set(Config::ADD_INCOMING_PAYMENTS, Request::postVar('addIncomingPayments', false));
 
         // Validate
         $valid = true;
-        if (empty(Request::postVar('privateKey')) || !PrivateKeyValidator::validate(Request::postVar('privateKey'))) {
-            $this->addError('Ungültiger Private Key.');
+
+        if (empty($privateKey) || !PrivateKeyValidator::validate($privateKey)) {
+            $this->addError(__('Ungültiger Private Key.'));
             $valid = false;
         }
 
         if (empty(Request::postVar('publicKey')) || !PublicKeyValidator::validate(Request::postVar('publicKey'))) {
             $this->addError(
-                'Ungültiger Public Key. Bitte stellen Sie sicher,
-                 dass sie hier Ihren Public Key und nicht Ihren Private Key angeben!'
+                __('Ungültiger Public Key. Bitte stellen Sie sicher, dass sie hier Ihren Public Key und nicht Ihren Private Key angeben!')
             );
             $valid = false;
         }
@@ -123,7 +150,7 @@ protected function handleSaveRequest(): void
         // If config is valid, save it in DB
         if ($valid) {
             $this->config->save();
-            $this->addSuccess('Die Einstellungen wurden erfolgreich gespeichert.');
+            $this->addSuccess(__('Die Einstellungen wurden erfolgreich gespeichert.'));
 
             // Register Webhooks Event Handlers if needed
             /** @var HeidelpayApiAdapter $adapter */
@@ -142,21 +169,36 @@ protected function registerWebhooks(HeidelpayApiAdapter $adapter): void
     {
         $newEvents = array_keys(PaymentEventSubscriber::getSubscribedEvents());
 
-        if (!empty($newEvents)) {
-            /** @var JtlLinkHelper $linkHelper */
-            $linkHelper = new JtlLinkHelper();
+        if (empty($newEvents)) {
+            return;
+        }
 
-            try {
-                $adapter->getApi()->registerMultipleWebhooks(
+        // Register for all keyparis + default
+        try {
+            $linkHelper = new JtlLinkHelper();
+            $model = new KeyPairModel(Shop::Container()->getDB());
+            $keypairs = $model->all();
+
+            foreach ($keypairs as $keypair) {
+                $adapter->setCurrentConnection(
+                    $keypair->isB2B(),
+                    $keypair->getCurrencyId(),
+                    $keypair->getPaymentMethodId()
+                )->registerMultipleWebhooks(
                     $linkHelper->getFullFrontendFileUrl(JtlLinkHelper::FRONTEND_FILE_WEBHOOKS),
                     $newEvents
                 );
-            } catch (Exception $exc) {
-                $this->errorLog('Could not register webhook: ' . $exc->getMessage(), static::class);
             }
 
-            $this->debugLog('Registered the following new webhooks: ' . implode(', ', $newEvents), static::class);
-            $this->addSuccess('Die Webhooks wurden erfolgreich gespeichert.');
+            $adapter->getDefaultConnection()->registerMultipleWebhooks(
+                $linkHelper->getFullFrontendFileUrl(JtlLinkHelper::FRONTEND_FILE_WEBHOOKS),
+                $newEvents
+            );
+        } catch (Exception $exc) {
+            $this->errorLog('Could not register webhook: ' . $exc->getMessage(), static::class);
         }
+
+        $this->debugLog('Registered the following new webhooks: ' . implode(', ', $newEvents), static::class);
+        $this->addSuccess(__('Die Webhooks wurden erfolgreich gespeichert.'));
     }
 }
diff --git a/src/Controllers/ApplePayController.php b/src/Controllers/ApplePayController.php
new file mode 100644
index 0000000..c80f4fd
--- /dev/null
+++ b/src/Controllers/ApplePayController.php
@@ -0,0 +1,160 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Plugin\s360_unzer_shop5\src\Controllers;
+
+use Exception;
+use JTL\IO\IO;
+use JTL\Plugin\PluginInterface;
+use JTL\Shop;
+use Plugin\s360_unzer_shop5\src\ApplePay\CertificationService;
+use Plugin\s360_unzer_shop5\src\Utils\Config;
+use Plugin\s360_unzer_shop5\src\Utils\SessionHelper;
+use Plugin\s360_unzer_shop5\src\Utils\TranslatorTrait;
+use RuntimeException;
+use UnzerSDK\Adapter\ApplepayAdapter;
+use UnzerSDK\Exceptions\ApplepayMerchantValidationException;
+use UnzerSDK\Resources\ExternalResources\ApplepaySession;
+
+/**
+ * Controller for Apple Pay
+ *
+ * @package Plugin\s360_unzer_shop5\src\Controllers
+ */
+class ApplePayController extends Controller
+{
+    use TranslatorTrait;
+
+    public const IO_FUNCTION_MERCHANT_VALIDATION = 'apple_pay_merchantvalidation';
+    public const IO_FUNCTION_PAYMENT_AUTHORIZED = 'apple_pay_payment_authorized';
+
+    /**
+     * @var IO
+     */
+    private $io;
+
+    /**
+     * @var CertificationService
+     */
+    private $certificationService;
+
+    /**
+     * @var SessionHelper
+     */
+    private $sessionHelper;
+
+    /**
+     * @param PluginInterface $plugin
+     * @param CertificationService $certificationService
+     * @param IO $io
+     */
+    public function __construct(PluginInterface $plugin, CertificationService $certificationService, IO $io)
+    {
+        parent::__construct($plugin);
+
+        $this->sessionHelper = Shop::Container()->get(SessionHelper::class);
+        $this->certificationService = $certificationService;
+        $this->io = $io;
+    }
+
+    /**
+     * Register io functions.
+     *
+     * @return string
+     */
+    public function handle(): string
+    {
+        $this->io->register(self::IO_FUNCTION_MERCHANT_VALIDATION, function ($merchantValidationUrl) {
+            return $this->validateMerchant($merchantValidationUrl);
+        });
+
+        $this->io->register(self::IO_FUNCTION_PAYMENT_AUTHORIZED, function (string $typeId) {
+            return $this->paymentAuthorized($typeId);
+        });
+
+        return '';
+    }
+
+    /**
+     * TODO: Testing
+     * Authorize payment callback
+     *
+     * SIMILAR/SAME as what would happen in the validateAdditional method of the payment method, but
+     * we need it before leaving the page to complete or abort the apple payment authorization
+     *
+     * @param string $typeId
+     * @return void
+     */
+    private function paymentAuthorized(string $typeId)
+    {
+        $response = ['transactionStatus' => 'error'];
+
+        try {
+            $this->sessionHelper->setCheckoutSession($typeId);
+            $response['transactionStatus'] = 'pending'; // Pending, as we did not charge the user yet
+        } catch (\Exception $exc) {
+            $this->errorLog($exc->getMessage(), 'APPLE PAY authorization endpoint: ');
+        }
+
+        $this->debugLog(
+            'Authorize Payment Callback' . print_r(['typeId' => $typeId, 'response' => $response], true),
+            self::class
+        );
+
+        return $response;
+    }
+
+    /**
+     * Do the merchant validation request and return the result to the frontend.
+     *
+     * @param string $merchantValidationUrl
+     * @return string|null
+     */
+    private function validateMerchant(string $merchantValidationUrl)
+    {
+        try {
+            // Init Apple Pay Session for with merchant identifier and domain
+            $merchantId = $this->config->get(Config::APPLEPAY_MERCHANT_IDENTIFIER);
+            $merchantDomain = $this->config->get(Config::APPLEPAY_MERCHANT_DOMAIN);
+
+            $this->debugLog(
+                'Validating merchant: ' . print_r(
+                    [
+                        'url' => $merchantValidationUrl,
+                        'merchantId' => $merchantId,
+                        'merchantDomain' => $merchantDomain
+                    ],
+                    true
+                ),
+                static::class
+            );
+
+            $appleAdapter = new ApplepayAdapter();
+            $applepaySession = new ApplepaySession(
+                $this->config->get(Config::APPLEPAY_MERCHANT_IDENTIFIER),
+                Shop::getSettingValue(\CONF_GLOBAL, 'global_shopname'),
+                $this->config->get(Config::APPLEPAY_MERCHANT_DOMAIN)
+            );
+
+            // Export the Merchant Certificate and its key to tmp files and init the apple pay adapter
+            $certPem = $this->certificationService->exportToFile(Config::APPLEPAY_MERCHANT_SIGNED_PEM);
+            $privKey = $this->certificationService->exportToFile(Config::APPLEPAY_MERCHANT_NON_ENCRYPTED_PRIVATE_KEY);
+
+            $appleAdapter->init($certPem->getRealPath(), $privKey->getRealPath());
+
+            // Send the applepay validation request and delete tmp files (just to be sure)
+            $result = $appleAdapter->validateApplePayMerchant($merchantValidationUrl, $applepaySession);
+            unlink($certPem->getRealPath());
+            unlink($privKey->getRealPath());
+
+            $this->debugLog('Merchant Validation Result: ' . print_r(json_decode($result), true), static::class);
+
+            return json_decode($result);
+        } catch (RuntimeException | ApplepayMerchantValidationException $exc) {
+            // Dont give internal error directly to the frontend.
+            $this->errorLog($exc->getMessage(), 'APPLE PAY Merchant Validation: ');
+            throw new Exception($this->trans(Config::LANG_ERROR_VALIDATING_MERCHANT));
+        }
+    }
+}
diff --git a/src/Controllers/Controller.php b/src/Controllers/Controller.php
index 33ea945..9b3854f 100644
--- a/src/Controllers/Controller.php
+++ b/src/Controllers/Controller.php
@@ -53,11 +53,12 @@ public function __construct(PluginInterface $plugin, JTLSmarty $smarty = null)
     }
 
     /**
-     * Expeected to fill smarty variables and return template.
+     * Expected to fill smarty variables and return template and return a json seriable object
+     * in case of an IO Controller.
      *
-     * @return string
+     * @return mixed
      */
-    abstract public function handle(): string;
+    abstract public function handle();
 
     /**
      * Prepare variable which are passed to the view.
diff --git a/src/Controllers/FrontendOutputController.php b/src/Controllers/FrontendOutputController.php
index 424e2bb..9866631 100644
--- a/src/Controllers/FrontendOutputController.php
+++ b/src/Controllers/FrontendOutputController.php
@@ -1,8 +1,11 @@
-<?php declare(strict_types = 1);
+<?php
+
+declare(strict_types=1);
 
 namespace Plugin\s360_unzer_shop5\src\Controllers;
 
 use JTL\Checkout\Bestellung;
+use JTL\Shop;
 use Plugin\s360_unzer_shop5\src\Utils\Config;
 
 /**
@@ -21,25 +24,25 @@ class FrontendOutputController extends Controller
     public function handle(): string
     {
         // Add "Change Payment Button"/Link
-        if (Shop()->getPageType() == \PAGE_BESTELLVORGANG) {
+        if (Shop::getPageType() == \PAGE_BESTELLVORGANG) {
             $snippet = $this->view(self::TEMPLATE_ID_CHANGE_PAYMENT_METHOD);
             $pqMethod = $this->config->get(Config::PQ_METHOD_CHANGE_PAYMENT_METHOD, 'append');
-            pq(
-                $this->config->get(
-                    Config::PQ_SELECTOR_CHANGE_PAYMENT_METHOD,
-                    '#order-additional-payment'
-                )
-            )->$pqMethod($snippet);
+            $pqSelector = $this->config->get(Config::PQ_SELECTOR_CHANGE_PAYMENT_METHOD);
+
+            if ($pqSelector) {
+                pq($pqSelector)->$pqMethod($snippet);
+            }
         }
 
         // Add Payment Information
-        if (Shop()->getPageType() == \PAGE_BESTELLABSCHLUSS) {
+        if (Shop::getPageType() == \PAGE_BESTELLABSCHLUSS) {
             /** @var Bestellung $order */
-            $order = $this->smarty->get_template_vars('Bestellung');
-            if (!empty($order) && (
+            $order = $this->smarty->getTemplateVars('Bestellung');
+            if (
+                !empty($order) && (
                 strpos($order->Zahlungsart->cModulId, 'unzervorkasse') !== false ||
-                strpos($order->Zahlungsart->cModulId, 'unzerrechnung') !== false
-            )) {
+                strpos($order->Zahlungsart->cModulId, 'unzerrechnung') !== false)
+            ) {
                 $snippet = $this->view(self::TEMPLATE_ID_PAYMENT_INFO);
                 $pqMethod = $this->config->get(Config::PQ_METHOD_PAYMENT_INFORMATION, 'append');
 
diff --git a/src/Controllers/PaymentController.php b/src/Controllers/PaymentController.php
index 74a00bd..1c4f042 100644
--- a/src/Controllers/PaymentController.php
+++ b/src/Controllers/PaymentController.php
@@ -1,10 +1,13 @@
-<?php declare(strict_types = 1);
+<?php
+
+declare(strict_types=1);
 
 namespace Plugin\s360_unzer_shop5\src\Controllers;
 
 use JTL\Helpers\Request;
 use JTL\Plugin\Payment\Method;
 use JTL\Shop;
+use Plugin\s360_unzer_shop5\paymentmethod\UnzerPaylaterInstallment;
 use Plugin\s360_unzer_shop5\src\Payments\HeidelpayPaymentMethod;
 use Plugin\s360_unzer_shop5\src\Payments\Interfaces\HandleStepReviewOrderInterface;
 use Plugin\s360_unzer_shop5\src\Utils\Config;
@@ -33,6 +36,28 @@ public function handle(): string
         $session = Shop::Container()->get(SessionHelper::class);
         $payment = $session->getFrontendSession()->get('Zahlungsart');
 
+        // Clear session if the user changed the currency otherwise we might use the wrong IDs for a new keypair
+        if (Request::verifyGPDataString('curr')) {
+            $session->clearCheckoutSession();
+            $session->clear(SessionHelper::KEY_CUSTOMER_ID);
+        }
+
+        // Clear Payment Data if the customer wants to change his payment or shipping method or changes his address
+        if (
+            Shop::getPageType() === \PAGE_BESTELLVORGANG &&
+            (
+                Request::verifyGPCDataInt('editZahlungsart') > 0 ||
+                Request::verifyGPCDataInt('editVersandart') > 0 ||
+                Request::verifyGPCDataInt('editRechnungsadresse') > 0 ||
+                Request::verifyGPCDataInt('editLieferadresse') > 0
+            )
+        ) {
+            $session->clearCheckoutSession();
+
+            // clear ids to avoid using ids for other keypairs in which they might not exist
+            $session->clear(SessionHelper::KEY_CUSTOMER_ID);
+        }
+
         if (Shop::getPageType() === \PAGE_BESTELLVORGANG && $payment) {
             $checkoutSession = $session->get(SessionHelper::KEY_CHECKOUT_SESSION);
             $paymentMethod = Method::create($payment->cModulId);
@@ -42,6 +67,20 @@ public function handle(): string
                 return self::STATE_ABORT;
             }
 
+            // Instalment Info
+            if ($paymentMethod instanceof UnzerPaylaterInstallment) {
+                $method = $this->config->get(Config::PQ_METHOD_INSTALMENT_INFO, 'after');
+                $data = [
+                    'info' => $this->plugin->getLocalization()->getTranslation(Config::LANG_INSTLAMENT_INFO)
+                ];
+
+                pq(
+                    $this->config->get(Config::PQ_SELECTOR_INSTALMENT_INFO, '#complete-order-button')
+                )->{$method}(
+                    $this->view('template/instalment_info', $data),
+                );
+            }
+
             // Review Order => plugin session contains checkoutSession
             if ($checkoutSession && $paymentMethod instanceof HandleStepReviewOrderInterface) {
                 $this->debugLog('Handle Review Order Step', get_class($paymentMethod));
@@ -60,11 +99,14 @@ public function handle(): string
             }
         }
 
-        // Clear Payment Data if the customer wants to change his payment or shipping method
-        if (Shop::getPageType() === \PAGE_BESTELLVORGANG &&
-            (Request::verifyGPCDataInt('editZahlungsart') > 0 || Request::verifyGPCDataInt('editVersandart') > 0)
-        ) {
-            $session->clearCheckoutSession();
+        // HP-121: Clear Plugin Session on the order status page in case that a user aborted its payment process,
+        // otherwise the existing plugin session would mess things up
+        if (Shop::getPageType() === \PAGE_BESTELLSTATUS || Shop::getPageType() === \PAGE_BESTELLABSCHLUSS) {
+            $session->clear();
+
+            // clear ids to avoid using ids for other keypairs in which they might not exist
+            $session->clear(SessionHelper::KEY_CUSTOMER_ID);
+            $session->clear(SessionHelper::KEY_ORDER_ID);
         }
 
         return self::STATE_ABORT;
diff --git a/src/Controllers/SyncController.php b/src/Controllers/SyncController.php
index 2e908d3..83f3195 100644
--- a/src/Controllers/SyncController.php
+++ b/src/Controllers/SyncController.php
@@ -1,4 +1,6 @@
-<?php declare(strict_types = 1);
+<?php
+
+declare(strict_types=1);
 
 namespace Plugin\s360_unzer_shop5\src\Controllers;
 
@@ -9,14 +11,18 @@
 use JTL\Checkout\Bestellung;
 use JTL\Plugin\PluginInterface;
 use JTL\Shop;
+use Plugin\s360_unzer_shop5\src\Charges\ChargeHandler;
 use Plugin\s360_unzer_shop5\src\Orders\OrderMappingEntity;
 use Plugin\s360_unzer_shop5\src\Orders\OrderMappingModel;
 use Plugin\s360_unzer_shop5\src\Payments\HeidelpayApiAdapter;
 use Plugin\s360_unzer_shop5\src\Payments\HeidelpayPaymentMethod;
 use Plugin\s360_unzer_shop5\src\Payments\Interfaces\CancelableInterface;
 use Plugin\s360_unzer_shop5\src\Payments\PaymentMethodModuleFactory;
+use Plugin\s360_unzer_shop5\src\Utils\Config;
+use Plugin\s360_unzer_shop5\src\Utils\TranslatorTrait;
 use stdClass;
 use UnzerSDK\Constants\ApiResponseCodes;
+use UnzerSDK\Constants\CancelReasonCodes;
 use UnzerSDK\Resources\PaymentTypes\InstallmentSecured;
 
 /**
@@ -26,33 +32,17 @@
  */
 class SyncController extends Controller
 {
+    use TranslatorTrait;
+
     public const ACTION_SHIPMENT = 'shipment';
     public const ACTION_CANCEL = 'cancel';
 
-    /**
-     * @var string
-     */
-    protected $action;
-
-    /**
-     * @var Bestellung
-     */
-    protected $order;
-
-    /**
-     * @var OrderMappingModel
-     */
-    protected $model;
-
-    /**
-     * @var HeidelpayApiAdapter
-     */
-    protected $adapter;
-
-    /**
-     * @var PaymentMethodModuleFactory
-     */
-    protected $factory;
+    protected string $action;
+    protected Bestellung $order;
+    protected OrderMappingModel $model;
+    protected HeidelpayApiAdapter $adapter;
+    protected PaymentMethodModuleFactory $factory;
+    protected ChargeHandler $chargeHandler;
 
     /**
      * @inheritDoc
@@ -62,6 +52,7 @@ public function __construct(PluginInterface $plugin)
         parent::__construct($plugin);
 
         $this->adapter = Shop::Container()->get(HeidelpayApiAdapter::class);
+        $this->chargeHandler = Shop::Container()->get(ChargeHandler::class);
         $this->model = new OrderMappingModel(Shop::Container()->getDB());
         $this->factory = new PaymentMethodModuleFactory();
     }
@@ -110,6 +101,20 @@ public function handle(): string
             return 'error';
         }
 
+        /**
+         *! Because of stupid JTL Shop <-> WaWi matching the payment method by its displayed name it can happen that
+         *! an order with "Unzer Invoice Paylater" turns into an order with "Unzer Invoice" (or default "JTL Invoice").
+         *! This of course messes everything up, especially the logic to determine the API KeyPair...
+         *! So for this case we try to fix that behaviour and reassign the payment method we initially saved for that
+         *! mapped order.
+         */
+        if ($mappedOrder->getPaymentMethodId() && $this->order->kZahlungsart !== $mappedOrder->getPaymentMethodId()) {
+            $this->order->kZahlungsart = $mappedOrder->getPaymentMethodId();
+            $order = new Bestellung($this->order->kBestellung);
+            $order->kZahlungsart = $mappedOrder->getPaymentMethodId();
+            $order->updateInDB();
+        }
+
         // Action routing
         if ($this->action == self::ACTION_SHIPMENT) {
             $this->handleShipment($mappedOrder);
@@ -137,24 +142,57 @@ public function handle(): string
      */
     private function handleShipment(OrderMappingEntity $entity): void
     {
-        $this->debugLog('Handle Shipment for: ' . print_r($entity->toObject(), true));
+        $this->debugLog('Handle Shipment for: ' . print_r($entity->toObject(), true), static::class);
 
-        // Only call shipment if the order is shipped completely.
-        if ($this->order->cStatus != \BESTELLUNG_STATUS_VERSANDT) {
+        // Only call shipment if the order is shipped
+        if (
+            $this->order->cStatus != \BESTELLUNG_STATUS_VERSANDT &&
+            $this->order->cStatus != \BESTELLUNG_STATUS_TEILVERSANDT
+        ) {
+            $this->debugLog(
+                'Skip order because it is not in a shipped state: ' . $entity->getJtlOrderNumber(),
+                static::class
+            );
             return;
         }
 
         // Check if shipment call is supported for this payment
+        // Fill order before, otherwise we cannot determine if b2b or not and might get the wrong api key
+        $this->order->fuelleBestellung();
+        $api = $this->adapter->getConnectionForOrder($this->order);
         $payment = $this->adapter->fetchPayment($entity->getPaymentId());
 
+        // Charge before shipping calls are made
+        if ($this->adapter->shouldChargeBeforeShipping($payment->getPaymentType())) {
+            $method = $this->factory->createForType(
+                $payment->getPaymentType(),
+                ['id-string' => $entity->getPaymentTypeId()]
+            );
+
+            $this->chargeHandler->chargeOnShipping($this->order, $method, $payment, $entity);
+
+            $charge = $payment->getChargeByIndex(0);
+            if ($charge) {
+                $entity->setTransactionUniqueId($charge->getUniqueId());
+                $this->model->save($entity);
+            }
+
+            $this->debugLog(
+                'Charge before shipment call finished: ' . $entity->getJtlOrderNumber(),
+                static::class
+            );
+        }
+
+        // Ship order
         if ($this->adapter->supportsShipment($payment->getPaymentType())) {
             $this->debugLog(
-                'Ship payment ' . $payment->getId() . ' with invoiceId ' . $entity->getInvoiceId(),
+                'Ship payment ' . $payment->getId() . ' with invoiceId ' . $entity->getInvoiceId()
+                . ' for order ' . $entity->getJtlOrderNumber(),
                 static::class
             );
 
             // Ship
-            $shipment = $this->adapter->getApi()->ship($payment, $entity->getInvoiceId());
+            $shipment = $api->ship($payment, $entity->getInvoiceId());
             $entity->setPaymentState($payment->getStateName());
 
             if ($shipment->isSuccess()) {
@@ -173,6 +211,8 @@ private function handleShipment(OrderMappingEntity $entity): void
                 static::class
             );
         }
+
+        $this->debugLog('Finished handleShipment call for order ' . $entity->getJtlOrderNumber(), static::class);
     }
 
     /**
@@ -189,6 +229,8 @@ private function handleShipment(OrderMappingEntity $entity): void
     private function handleCancel(OrderMappingEntity $entity): void
     {
         $this->debugLog('Handle Cancelation for: ' . print_r($entity->toObject(), true));
+
+        $api = $this->adapter->getConnectionForOrder($this->order);
         $payment = $this->adapter->fetchPayment($entity->getPaymentId());
         $method = $this->factory->createForType(
             $payment->getPaymentType(),
@@ -205,9 +247,11 @@ private function handleCancel(OrderMappingEntity $entity): void
         $authorization = $payment->getAuthorization();
         $entity->setPaymentState(PaymentState::STATE_NAME_CANCELED);
 
-        if (!empty($authorization) &&
+        if (
+            !empty($authorization) &&
             !$payment->getPaymentType() instanceof InstallmentSecured &&
-            $authorization instanceof Authorization
+            $authorization instanceof Authorization &&
+            empty($payment->getCharges())
         ) {
             $this->cancelTransaction($payment, $authorization, $method);
             return;
@@ -217,7 +261,7 @@ private function handleCancel(OrderMappingEntity $entity): void
         // Most payment types probably contain only one charge, but for a full cancelation we have to cancel all.
         foreach ($payment->getCharges() as $charge) {
             /** @var Charge $charge */
-            $charge = $this->adapter->getApi()->fetchCharge($charge);
+            $charge = $api->fetchCharge($charge);
 
             if (!$charge->isError()) {
                 try {
@@ -251,13 +295,29 @@ private function handleCancel(OrderMappingEntity $entity): void
      */
     private function cancelTransaction(Payment $payment, $transaction, HeidelpayPaymentMethod $method): void
     {
+        if ($transaction->isError()) {
+            $this->errorLog(
+                'Could not cancel unsuccessful transaction: ' . $transaction->getId(),
+                static::class
+            );
+            return;
+        }
+
         if ($method instanceof CancelableInterface) {
             $cancellation = $method->cancelPaymentTransaction($payment, $transaction, $this->order);
+        } elseif ($transaction instanceof Authorization) {
+            $cancellation = $this->adapter->getCurrentConnection()->cancelAuthorizedPayment($payment);
         } else {
-            $cancellation = $transaction->cancel();
+            $reference = str_replace(
+                ['%ORDER_ID%', '%SHOPNAME%'],
+                [$this->order->cBestellNr, Shop::getSettingValue(CONF_GLOBAL, 'global_shopname')],
+                $this->trans(Config::LANG_CANCEL_PAYMENT_REFERENCE)
+            );
+
+            $cancellation = $transaction->cancel(null, CancelReasonCodes::REASON_CODE_CANCEL, $reference);
         }
 
-        if ($cancellation->isError()) {
+        if ($cancellation->isError() || $cancellation->isPending()) {
             $this->errorLog(
                 'Could not cancel payment: ' . $cancellation->getMessage()->getMerchant() .
                 ' | Error-Code: ' . $cancellation->getMessage()->getCode(),
diff --git a/src/Controllers/SyncWorkflowController.php b/src/Controllers/SyncWorkflowController.php
index 987bbce..8f02ec1 100644
--- a/src/Controllers/SyncWorkflowController.php
+++ b/src/Controllers/SyncWorkflowController.php
@@ -4,6 +4,7 @@
 namespace Plugin\s360_unzer_shop5\src\Controllers;
 
 use Exception;
+use JTL\Checkout\Bestellung;
 use UnzerSDK\Exceptions\UnzerApiException;
 use JTL\Helpers\Request;
 use JTL\Helpers\Text;
@@ -54,9 +55,10 @@ public function handle(): string
         // Validate Request.
         $this->debugLog('Called SyncWorkflowController with the following data: ' . print_r($_POST, true));
         $attrs = [];
-        parse_str(str_replace('|', '&', Request::postVar('attrs')), $attrs);
+        parse_str(str_replace('|', '&', Request::postVar('attrs', '')), $attrs);
 
-        if (empty($attrs) || empty($attrs[HeidelpayPaymentMethod::ATTR_PAYMENT_ID])
+        if (
+            empty($attrs) || empty($attrs[HeidelpayPaymentMethod::ATTR_PAYMENT_ID])
             || !Request::hasGPCData('invoice_id')
         ) {
             $this->errorLog('Missing parameter payment_id or invoice_id' . print_r($attrs, true), static::class);
@@ -87,7 +89,7 @@ public function handle(): string
         }
 
         // Update Payment Resource (needed for HDD, as it needs invoiceDate etc)
-        $this->updatePaymentType($order->getPaymentTypeId());
+        $this->updatePaymentType($order->getPaymentTypeId(), new Bestellung($order->getId(), true));
         $this->debugLog('Number of affected rows: ' . $saved, static::class);
         $this->debugLog(
             'Saved invoice id ' . Request::postVar('invoice_id') . ' for order ' . json_encode($order->jsonSerialize()),
@@ -98,19 +100,17 @@ public function handle(): string
 
     /**
      * Update payment type if necessary
-     *
-     * @param string $paymentTypeId
-     * @return void
      */
-    private function updatePaymentType(string $paymentTypeId): void
+    private function updatePaymentType(string $paymentTypeId, Bestellung $order): void
     {
         try {
+            $api = $this->adapter->getConnectionForOrder($order);
             $paymentType = $this->adapter->fetchPaymentType($paymentTypeId);
 
             if ($paymentType instanceof InstallmentSecured) {
                 $paymentType->setInvoiceDate(date('Y-m-d'));
                 $paymentType->setInvoiceDueDate(date('Y-m-d'));
-                $this->adapter->getApi()->updatePaymentType($paymentType);
+                $api->updatePaymentType($paymentType);
                 $this->debugLog('Updated payment type: ' . json_encode($paymentType->jsonSerialize()));
             }
         } catch (UnzerApiException $exc) {
diff --git a/src/Controllers/WebhookController.php b/src/Controllers/WebhookController.php
index 0c11c72..a63fc56 100644
--- a/src/Controllers/WebhookController.php
+++ b/src/Controllers/WebhookController.php
@@ -1,4 +1,6 @@
-<?php declare(strict_types = 1);
+<?php
+
+declare(strict_types=1);
 
 namespace Plugin\s360_unzer_shop5\src\Controllers;
 
@@ -16,14 +18,8 @@
  */
 class WebhookController extends Controller
 {
-    /**
-     * @var HeidelpayApiAdapter
-     */
-    protected $adapter;
+    protected HeidelpayApiAdapter $adapter;
 
-    /**
-     * @inheritDoc
-     */
     public function __construct(PluginInterface $plugin)
     {
         parent::__construct($plugin);
@@ -45,18 +41,25 @@ public function handle(): string
         // Fetch Webhook resource
         $input = file_get_contents('php://input');
         $event = json_decode($input);
-        $resource = $this->adapter->getApi()->fetchResourceFromEvent(file_get_contents('php://input'));
-        $this->debugLog('Handling event: ' . print_r($input, true), static::class);
-        $this->debugLog('Fetched resource from Event: ' . $resource->jsonSerialize(), static::class);
 
-        if (!$resource instanceof AbstractUnzerResource) {
-            $this->errorLog('Fetched resource is not a AbstractUnzerResource. Abort!', static::class);
+        if (!isset($event->event) or empty($event->event)) {
+            $this->errorLog('Request does not contain an event. Abort!', static::class);
             http_response_code(403);
             exit;
         }
 
-        if (!isset($event->event) or empty($event->event)) {
-            $this->errorLog('Request does not contain an event. Abort!', static::class);
+        if (!isset($event->publicKey) or empty($event->publicKey)) {
+            $this->errorLog('Request does not contain public key Abort!', static::class);
+            http_response_code(403);
+            exit;
+        }
+
+        $resource = $this->adapter->getConnectionForPublicKey($event->publicKey)->fetchResourceFromEvent($input);
+        $this->debugLog('Handling event: ' . print_r($input, true), static::class);
+        $this->debugLog('Fetched resource from Event: ' . $resource->jsonSerialize(), static::class);
+
+        if (!$resource instanceof AbstractUnzerResource) {
+            $this->errorLog('Fetched resource is not a AbstractUnzerResource. Abort!', static::class);
             http_response_code(403);
             exit;
         }
diff --git a/src/Foundation/ServiceProvider.php b/src/Foundation/ServiceProvider.php
index d4a680f..533b7b7 100644
--- a/src/Foundation/ServiceProvider.php
+++ b/src/Foundation/ServiceProvider.php
@@ -1,12 +1,16 @@
 <?php
-declare(strict_types = 1);
+
+declare(strict_types=1);
 
 namespace Plugin\s360_unzer_shop5\src\Foundation;
 
 use JTL\Plugin\Helper;
 use JTL\Services\Container;
+use Plugin\s360_unzer_shop5\src\ApplePay\CertificationService;
 use Plugin\s360_unzer_shop5\src\Charges\ChargeHandler;
 use Plugin\s360_unzer_shop5\src\Charges\ChargeMappingModel;
+use Plugin\s360_unzer_shop5\src\KeyPairs\KeyPairModel;
+use Plugin\s360_unzer_shop5\src\KeyPairs\KeyPairService;
 use Plugin\s360_unzer_shop5\src\Orders\OrderMappingModel;
 use Plugin\s360_unzer_shop5\src\Payments\HeidelpayApiAdapter;
 use Plugin\s360_unzer_shop5\src\Payments\PaymentHandler;
@@ -57,16 +61,27 @@ public function register(): void
             return new Config();
         });
 
+        $this->app->setSingleton(KeyPairService::class, function (Container $app) {
+            return new KeyPairService(
+                new KeyPairModel($app->getDB()),
+                $app->get(Config::class)
+            );
+        });
+
         $this->app->setSingleton(HeidelpayApiAdapter::class, function (Container $app) {
             return new HeidelpayApiAdapter(
-                $app->get(Config::class),
+                $app->get(KeyPairService::class),
                 $app->get(SessionHelper::class),
                 new JtlLinkHelper()
             );
         });
 
         $this->app->setFactory(ChargeHandler::class, function (Container $app) {
-            return new ChargeHandler(new ChargeMappingModel($app->getDB()));
+            return new ChargeHandler(
+                new ChargeMappingModel($app->getDB()),
+                $app->get(Config::class),
+                $app->get(HeidelpayApiAdapter::class)
+            );
         });
 
         $this->app->setFactory(PaymentHandler::class, function (Container $app) {
@@ -79,5 +94,13 @@ public function register(): void
                 new OrderMappingModel($app->getDB())
             );
         });
+
+        $this->app->setFactory(CertificationService::class, function (Container $app) {
+            return new CertificationService(
+                $app->getCryptoService(),
+                $app->get(Config::class),
+                $app->get(HeidelpayApiAdapter::class)
+            );
+        });
     }
 }
diff --git a/src/KeyPairs/KeyPairEntity.php b/src/KeyPairs/KeyPairEntity.php
new file mode 100644
index 0000000..0737aea
--- /dev/null
+++ b/src/KeyPairs/KeyPairEntity.php
@@ -0,0 +1,117 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Plugin\s360_unzer_shop5\src\KeyPairs;
+
+use Plugin\s360_unzer_shop5\src\Foundation\Entity;
+use stdClass;
+
+class KeyPairEntity extends Entity
+{
+    protected string $privateKey;
+    protected string $publicKey;
+    protected bool $isB2B;
+    protected int $currencyId;
+    protected int $paymentMethodId;
+
+    public function __construct(
+        string $privateKey,
+        string $publicKey,
+        bool $isB2B,
+        int $currencyId,
+        int $paymentMethodId
+    ) {
+        $this->privateKey = $privateKey;
+        $this->publicKey = $publicKey;
+        $this->isB2B = $isB2B;
+        $this->currencyId = $currencyId;
+        $this->paymentMethodId = $paymentMethodId;
+    }
+
+    public function toObject(): stdClass
+    {
+        $data = new stdClass();
+
+        $data->id = $this->getId();
+        $data->private_key = $this->getPrivateKey();
+        $data->public_key = $this->getPublicKey();
+        $data->is_b2b = $this->isB2B();
+        $data->currency_id = $this->getCurrencyId();
+        $data->payment_method_id = $this->getPaymentMethodId();
+
+        return $data;
+    }
+
+    public static function create(stdClass $data): Entity
+    {
+        $entity = new self(
+            $data->private_key,
+            $data->public_key,
+            (bool) $data->is_b2b,
+            (int) $data->currency_id,
+            (int) $data->payment_method_id
+        );
+
+        if (!empty($data->id)) {
+            $entity->setId((int) $data->id);
+        }
+
+        return $entity;
+    }
+
+    public function getPrivateKey(): string
+    {
+        return $this->privateKey;
+    }
+
+    public function setPrivateKey(string $privateKey): self
+    {
+        $this->privateKey = $privateKey;
+        return $this;
+    }
+
+    public function getPublicKey(): string
+    {
+        return $this->publicKey;
+    }
+
+    public function setPublicKey(string $publicKey): self
+    {
+        $this->publicKey = $publicKey;
+        return $this;
+    }
+
+    public function isB2B(): bool
+    {
+        return $this->isB2B;
+    }
+
+    public function setIsB2B(bool $isB2B): self
+    {
+        $this->isB2B = $isB2B;
+        return $this;
+    }
+
+    public function getCurrencyId(): int
+    {
+        return $this->currencyId;
+    }
+
+    public function setCurrencyId(int $currencyId): self
+    {
+        $this->currencyId = $currencyId;
+        return $this;
+    }
+
+    public function getPaymentMethodId(): int
+    {
+        return $this->paymentMethodId;
+    }
+
+    public function setPaymentMethodId(int $paymentMethodId): self
+    {
+        $this->paymentMethodId = $paymentMethodId;
+        return $this;
+    }
+}
diff --git a/src/KeyPairs/KeyPairModel.php b/src/KeyPairs/KeyPairModel.php
new file mode 100644
index 0000000..dab9617
--- /dev/null
+++ b/src/KeyPairs/KeyPairModel.php
@@ -0,0 +1,90 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Plugin\s360_unzer_shop5\src\KeyPairs;
+
+use JTL\DB\ReturnType;
+use Plugin\s360_unzer_shop5\src\Foundation\Entity;
+use Plugin\s360_unzer_shop5\src\Foundation\Model;
+use stdClass;
+
+/**
+ * Key Pair Model
+ *
+ * @method KeyPairEntity find(int $id) Find a mapped order by its id.
+ * @package Plugin\s360_unzer_shop5\src\KeyPairs
+ */
+class KeyPairModel extends Model
+{
+    public const TABLE = 'xplugin_s360_unzer_shop5_keypairs';
+
+    public function getTable(): string
+    {
+        return self::TABLE;
+    }
+
+    /**
+     * @return KeyPairEntity
+     */
+    public function createEntity(stdClass $data): Entity
+    {
+        return KeyPairEntity::create($data);
+    }
+
+    /**
+     * @return KeyPairEntity[]
+     */
+    public function all(): array
+    {
+        $result = $this->database->selectAll($this->getTable(), [], []);
+
+        if (empty($result)) {
+            return [];
+        }
+
+        $data = [];
+        foreach ($result as $row) {
+            $data[] = $this->createEntity($row);
+        }
+
+        return $data;
+    }
+
+    public function findKeyPair(bool $isB2B, int $currency, int $paymentMethod): ?KeyPairEntity
+    {
+        $result = $this->database->queryPrepared(
+            "SELECT * FROM {$this->getTable()}
+            WHERE is_b2b = :b2b AND currency_id = :currency AND payment_method_id = :paymentMethod",
+            ['b2b' => $isB2B, 'currency' => $currency, 'paymentMethod' => $paymentMethod],
+            ReturnType::SINGLE_OBJECT
+        );
+
+        if (empty($result)) {
+            return null;
+        }
+
+        return $this->createEntity($result);
+    }
+
+    public function findByPublic(string $publicKey): ?KeyPairEntity
+    {
+        $result = $this->database->selectSingleRow($this->getTable(), 'public_key', $publicKey);
+
+        if (empty($result)) {
+            return null;
+        }
+
+        return $this->createEntity($result);
+    }
+
+    public function getCurrencies()
+    {
+        $result = $this->database->query(
+            'SELECT kWaehrung as id, cISO as name FROM twaehrung',
+            ReturnType::ARRAY_OF_ASSOC_ARRAYS
+        );
+
+        return array_column($result, null, 'id');
+    }
+}
diff --git a/src/KeyPairs/KeyPairService.php b/src/KeyPairs/KeyPairService.php
new file mode 100644
index 0000000..3a7b5ea
--- /dev/null
+++ b/src/KeyPairs/KeyPairService.php
@@ -0,0 +1,62 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Plugin\s360_unzer_shop5\src\KeyPairs;
+
+use Plugin\s360_unzer_shop5\src\Utils\Config;
+
+class KeyPairService
+{
+    private KeyPairModel $model;
+    private Config $config;
+
+    public function __construct(KeyPairModel $model, Config $config)
+    {
+        $this->model = $model;
+        $this->config = $config;
+    }
+
+    public function getPrivateFromPublic(string $public): ?string
+    {
+        $keypair = $this->model->findByPublic($public);
+
+        if (empty($keypair)) {
+            return null;
+        }
+
+        return $keypair->getPrivateKey();
+    }
+
+    public function getPrivateKey(bool $isB2B, int $currency, int $paymentMethod): ?string
+    {
+        $keypair = $this->model->findKeyPair($isB2B, $currency, $paymentMethod);
+
+        if (empty($keypair)) {
+            return null;
+        }
+
+        return $keypair->getPrivateKey();
+    }
+
+    public function getPublicKey(bool $isB2B, int $currency, int $paymentMethod): ?string
+    {
+        $keypair = $this->model->findKeyPair($isB2B, $currency, $paymentMethod);
+
+        if (empty($keypair)) {
+            return null;
+        }
+
+        return $keypair->getPublicKey();
+    }
+
+    public function getDefaultPrivateKey(): ?string
+    {
+        return $this->config->get(Config::PRIVATE_KEY);
+    }
+
+    public function getDefaultPublicKey(): ?string
+    {
+        return $this->config->get(Config::PUBLIC_KEY);
+    }
+}
diff --git a/src/Orders/OrderMappingEntity.php b/src/Orders/OrderMappingEntity.php
index 15f4f2e..ff3cb80 100644
--- a/src/Orders/OrderMappingEntity.php
+++ b/src/Orders/OrderMappingEntity.php
@@ -53,6 +53,8 @@ class OrderMappingEntity extends Entity
      */
     protected $invoiceId;
 
+    protected ?int $paymentMethodId = null;
+
     /**
      * @inheritDoc
      */
@@ -67,6 +69,7 @@ public function toObject(): stdClass
         $data->payment_state = $this->getPaymentState();
         $data->payment_type_name = $this->getPaymentTypeName();
         $data->payment_type_id = $this->getPaymentTypeId();
+        $data->payment_method_id = $this->getPaymentMethodId();
 
         return $data;
     }
@@ -86,6 +89,7 @@ public static function create(stdClass $data): Entity
         $entity->setPaymentState($data->payment_state);
         $entity->setPaymentTypeName($data->payment_type_name);
         $entity->setPaymentTypeId($data->payment_type_id);
+        $entity->setPaymentMethodId($data->payment_method_id ? (int) $data->payment_method_id : null);
         return $entity;
     }
 
@@ -221,6 +225,28 @@ public function setPaymentTypeId(string $paymentTypeId): self
         return $this;
     }
 
+    /**
+     * Get jtl payment method id.
+     *
+     * @return ?int
+     */
+    public function getPaymentMethodId(): ?int
+    {
+        return $this->paymentMethodId;
+    }
+
+    /**
+     * Set jtl payment method id.
+     *
+     * @param ?int $paymentMethodId  Heidelpay payment Method id.
+     * @return self
+     */
+    public function setPaymentMethodId(?int $paymentMethodId): self
+    {
+        $this->paymentMethodId = $paymentMethodId;
+        return $this;
+    }
+
     /**
      * Get wawi invoice id.
      *
diff --git a/src/Orders/OrderMappingModel.php b/src/Orders/OrderMappingModel.php
index 1cc391a..de7909e 100644
--- a/src/Orders/OrderMappingModel.php
+++ b/src/Orders/OrderMappingModel.php
@@ -1,5 +1,6 @@
 <?php
-declare(strict_types = 1);
+
+declare(strict_types=1);
 
 namespace Plugin\s360_unzer_shop5\src\Orders;
 
@@ -55,7 +56,7 @@ public function releaseOrder(int $id): int
         $orderMapping = $this->find($id);
 
         if (!empty($orderMapping)) {
-            $obj = new stdClass;
+            $obj = new stdClass();
             $obj->cAbgeholt = 'N';
 
             return (int) $this->database->update(
@@ -99,7 +100,7 @@ public function findByPayment(string $paymentId): ?OrderMappingEntity
     public function saveOrderAttributes(Bestellung $order, array $attributes): void
     {
         foreach ($attributes as $key => $value) {
-            $attr = new stdClass;
+            $attr = new stdClass();
             $attr->kBestellung = $order->kBestellung;
             $attr->cName = $key;
             $attr->cValue = $value;
@@ -141,11 +142,44 @@ public function loadOrders(int $limit, int $offset, ?string $search = null): arr
         $data = [];
         foreach ($result as $row) {
             $order = new Bestellung();
-            $attrs = get_object_vars($row);
-            foreach ($attrs as $key => $val) {
-                if (property_exists($order, $key)) {
-                    $order->$key = $val;
-                }
+
+            $order->kBestellung          = (int)$row->kBestellung;
+            $order->kWarenkorb           = (int)$row->kWarenkorb;
+            $order->kKunde               = (int)$row->kKunde;
+            $order->kLieferadresse       = (int)$row->kLieferadresse;
+            $order->kRechnungsadresse    = (int)$row->kRechnungsadresse;
+            $order->kZahlungsart         = (int)$row->kZahlungsart;
+            $order->kVersandart          = (int)$row->kVersandart;
+            $order->kSprache             = (int)$row->kSprache;
+            $order->kWaehrung            = (int)$row->kWaehrung;
+            $order->fGuthaben            = $row->fGuthaben;
+            $order->fGesamtsumme         = $row->fGesamtsumme;
+            $order->cSession             = $row->cSession;
+            $order->cVersandartName      = $row->cVersandartName;
+            $order->cZahlungsartName     = $row->cZahlungsartName;
+            $order->cBestellNr           = $row->cBestellNr;
+            $order->cVersandInfo         = $row->cVersandInfo;
+            $order->nLongestMinDelivery  = (int)$row->nLongestMinDelivery;
+            $order->nLongestMaxDelivery  = (int)$row->nLongestMaxDelivery;
+            $order->dVersandDatum        = $row->dVersandDatum;
+            $order->dBezahltDatum        = $row->dBezahltDatum;
+            $order->dBewertungErinnerung = $row->dBewertungErinnerung;
+            $order->cTracking            = $row->cTracking;
+            $order->cKommentar           = $row->cKommentar;
+            $order->cLogistiker          = $row->cLogistiker;
+            $order->cTrackingURL         = $row->cTrackingURL;
+            $order->cIP                  = $row->cIP;
+            $order->cAbgeholt            = $row->cAbgeholt;
+            $order->cStatus              = $row->cStatus;
+            $order->dErstellt            = $row->dErstellt;
+            $order->fWaehrungsFaktor     = $row->fWaehrungsFaktor;
+            $order->cPUIZahlungsdaten    = $row->cPUIZahlungsdaten;
+
+            if (isset($order->nLongestMinDelivery, $order->nLongestMaxDelivery)) {
+                $order->setEstimatedDelivery($order->nLongestMinDelivery, $order->nLongestMaxDelivery);
+                unset($order->nLongestMinDelivery, $order->nLongestMaxDelivery);
+            } else {
+                $order->setEstimatedDelivery();
             }
 
             $entity = $this->createEntity($row);
diff --git a/src/Payments/HeidelpayApiAdapter.php b/src/Payments/HeidelpayApiAdapter.php
index 8d098e8..f99f729 100644
--- a/src/Payments/HeidelpayApiAdapter.php
+++ b/src/Payments/HeidelpayApiAdapter.php
@@ -1,4 +1,6 @@
-<?php declare(strict_types = 1);
+<?php
+
+declare(strict_types=1);
 
 namespace Plugin\s360_unzer_shop5\src\Payments;
 
@@ -8,11 +10,17 @@
 use UnzerSDK\Resources\PaymentTypes\BasePaymentType;
 use UnzerSDK\Resources\PaymentTypes\InstallmentSecured;
 use UnzerSDK\Resources\PaymentTypes\InvoiceSecured;
+use UnzerSDK\Resources\PaymentTypes\PaylaterInvoice;
+use UnzerSDK\Resources\PaymentTypes\PaylaterDirectDebit;
+use UnzerSDK\Resources\PaymentTypes\PaylaterInstallment;
 use UnzerSDK\Resources\TransactionTypes\AbstractTransactionType;
 use UnzerSDK\Resources\TransactionTypes\Authorization;
 use JTL\Cart\Cart;
+use JTL\Checkout\Bestellung;
 use JTL\Helpers\Text;
-use Plugin\s360_unzer_shop5\src\Utils\Config;
+use JTL\Session\Frontend;
+use JTL\Shop;
+use Plugin\s360_unzer_shop5\src\KeyPairs\KeyPairService;
 use Plugin\s360_unzer_shop5\src\Utils\JtlLinkHelper;
 use Plugin\s360_unzer_shop5\src\Utils\JtlLoggerTrait;
 use Plugin\s360_unzer_shop5\src\Utils\SessionHelper;
@@ -33,38 +41,37 @@ class HeidelpayApiAdapter
         InvoiceSecured::class,
         InstallmentSecured::class // Note: shipment docu says no, hdd says yes
     ];
+    public const SHOULD_CHARGE_BEFORE_SHIPPING = [
+        PaylaterInvoice::class,
+        PaylaterInstallment::class,
+        PaylaterDirectDebit::class,
+    ];
 
     /**
      * @var Unzer
+     * @deprecated
      */
     private $api;
 
-    /**
-     * @var Config
-     */
-    private $config;
-
-    /**
-     * @var SessionHelper
-     */
-    private $session;
+    private SessionHelper $session;
+    private JtlLinkHelper $linkHelper;
 
-    /**
-     * @var JtlLinkHelper
-     */
-    private $linkHelper;
+    private array $connections = [];
+    private ?Unzer $currentConnection = null;
+    private ?Unzer $defaultConnection = null;
+    private KeyPairService $keypairService;
 
-    /**
-     * @param Config $config
-     * @param SessionHelper $session
-     * @param JtlLinkHelper $linkHelper
-     */
-    public function __construct(Config $config, SessionHelper $session, JtlLinkHelper $linkHelper)
+    public function __construct(KeyPairService $keyPairService, SessionHelper $session, JtlLinkHelper $linkHelper)
     {
-        $this->config = $config;
+        $this->keypairService = $keyPairService;
         $this->session = $session;
         $this->linkHelper = $linkHelper;
-        $this->createApiClient();
+        $this->setCurrentConnection();
+    }
+
+    public function getKeypairService(): KeyPairService
+    {
+        return $this->keypairService;
     }
 
     /**
@@ -72,19 +79,87 @@ public function __construct(Config $config, SessionHelper $session, JtlLinkHelpe
      *
      * @return Unzer
      */
-    public function createApiClient(): Unzer
+    public function setCurrentConnection(?bool $isB2B = null, ?int $currency = null, ?int $paymentMethod = null): Unzer
+    {
+        // TODO: Try to load defaults from session?
+        if ($isB2B === null || $currency === null || $paymentMethod === null) {
+            $this->currentConnection = $this->getDefaultConnection();
+            return $this->currentConnection;
+        }
+
+        // If no private key exists for the combination use the default connection as the current connection
+        $privateKey = $this->keypairService->getPrivateKey($isB2B, $currency, $paymentMethod);
+        if (empty($privateKey)) {
+            $this->currentConnection = $this->getDefaultConnection();
+            return $this->currentConnection;
+        }
+
+        // Setup connection
+        $key = (int) $isB2B . ":{$currency}:{$paymentMethod}";
+        $this->connections[$key] = new Unzer(
+            $privateKey,
+            $this->mapToLocale(Shop::getLanguageCode() ?? 'eng')
+        );
+
+        $this->currentConnection = $this->connections[$key];
+
+        return $this->currentConnection;
+    }
+
+    public function getCurrentConnection(): Unzer
+    {
+        return $this->currentConnection ?? $this->getDefaultConnection();
+    }
+
+    public function getDefaultConnection(): Unzer
+    {
+        if (empty($this->defaultConnection)) {
+            $this->defaultConnection = new Unzer(
+                $this->keypairService->getDefaultPrivateKey(),
+                $this->mapToLocale(Shop::getLanguageCode() ?? 'eng')
+            );
+        }
+
+        return $this->defaultConnection;
+    }
+
+    public function getConnectionForOrder(Bestellung $order): Unzer
+    {
+        return $this->setCurrentConnection(
+            (isset($order->oKunde->cFirma) && strlen(trim($order->oKunde->cFirma)) > 0) || (isset($order->oRechnungsadresse->cFirma) && strlen(trim($order->oRechnungsadresse->cFirma))),
+            (int) $order->kWaehrung,
+            (int) $order->kZahlungsart
+        );
+    }
+
+    public function getConnectionForSession(): Unzer
     {
-        $this->api = new Unzer(
-            $this->config->get(Config::PRIVATE_KEY),
-            $this->mapToLocale($this->session->getFrontendSession()->getLanguage()->cISOSprache ?? 'eng')
+        return $this->setCurrentConnection(
+            isset(Frontend::getCustomer()->cFirma) && strlen(trim(Frontend::getCustomer()->cFirma)) > 0,
+            (int) Frontend::getCurrency()->getID(),
+            (int) Frontend::get('AktiveZahlungsart')
+        );
+    }
+
+    public function getConnectionForPublicKey(string $publicKey): Unzer
+    {
+        $privateKey = $this->keypairService->getPrivateFromPublic($publicKey);
+
+        if (empty($privateKey)) {
+            return $this->getDefaultConnection();
+        }
+
+        $this->currentConnection = new Unzer(
+            $privateKey,
+            $this->mapToLocale(Shop::getLanguageCode() ?? 'eng')
         );
 
-        return $this->getApi();
+        return $this->currentConnection;
     }
 
     /**
      * Get Api instance.
-     *
+     * @deprecated
      * @return Unzer
      */
     public function getApi(): Unzer
@@ -101,11 +176,14 @@ public function getApi(): Unzer
      */
     public function fetchCustomerId()
     {
-        if (!$this->session->has(SessionHelper::KEY_CUSTOMER_ID)) {
+        if (
+            !$this->session->has(SessionHelper::KEY_CUSTOMER_ID) &&
+            $this->session->getFrontendSession()->getCustomer()->isLoggedIn()
+        ) {
             // Try to fetch the heidelpay customer by its shop id (kKunde).
             try {
-                $customer = $this->getApi()->fetchCustomerByExtCustomerId(
-                    $this->session->getFrontendSession()->getCustomer()->kKunde
+                $customer = $this->getCurrentConnection()->fetchCustomerByExtCustomerId(
+                    (string) $this->session->getFrontendSession()->getCustomer()->getID()
                 );
 
                 $this->session->set(SessionHelper::KEY_CUSTOMER_ID, $customer->getId());
@@ -132,7 +210,7 @@ public function fetchPayment(?string $paymentId = null): Payment
             $paymentId = $this->session->get(SessionHelper::KEY_PAYMENT_ID);
         }
 
-        return $this->api->fetchPayment($paymentId);
+        return $this->getCurrentConnection()->fetchPayment($paymentId);
     }
 
     /**
@@ -169,7 +247,7 @@ public function fetchPaymentType(?string $paymentTypeId = null): BasePaymentType
             );
         }
 
-        return $this->api->fetchPaymentType($paymentTypeId);
+        return $this->getCurrentConnection()->fetchPaymentType($paymentTypeId);
     }
 
     /**
@@ -183,16 +261,32 @@ public function supportsShipment(BasePaymentType $paymentType): bool
         return in_array(get_class($paymentType), self::SUPPORTS_SHIPMENT);
     }
 
+    /**
+     * Checks if a payment method should do a full charge before the shipment call.
+     *
+     * @param BasePaymentType $paymentType
+     * @return bool
+     */
+    public function shouldChargeBeforeShipping(BasePaymentType $paymentType): bool
+    {
+        return in_array(get_class($paymentType), self::SHOULD_CHARGE_BEFORE_SHIPPING);
+    }
+
     /**
      * Redirect transaction to external payment provider.
      *
      * @SuppressWarnings(PHPMD.ExitExpression)
      * @param AbstractTransactionType $transaction
+     * @param Bestellung $order
      * @param array $postData
      * @return void
      */
-    public function redirectTransaction(AbstractTransactionType $transaction, array $postData = []): void
-    {
+    public function redirectTransaction(
+        AbstractTransactionType $transaction,
+        Bestellung $order,
+        array $postData = []
+    ): void {
+        $this->session->set(SessionHelper::KEY_ORDER_ID, $order->cBestellNr);
         $this->session->set(SessionHelper::KEY_PAYMENT_ID, $transaction->getPaymentId());
         $this->session->set(SessionHelper::KEY_SHORT_ID, $transaction->getShortId());
         $this->session->set(SessionHelper::KEY_CONFIRM_POST_ARRAY, $postData);
@@ -214,11 +308,20 @@ public function redirectTransaction(AbstractTransactionType $transaction, array
      */
     public function mapToLocale(string $iso): string
     {
-        switch ($iso) {
-            case 'ger':
-                return 'de-DE';
-            default:
-                return 'en-GB';
-        }
+        $mapping = [
+            'ger' => 'de-DE',
+            'dut' => 'nl-NL',
+            'fin' => 'fi',
+            'dan' => 'da',
+            'fre' => 'fr-FR',
+            'ita' => 'it-IT',
+            'spa' => 'es-ES',
+            'por' => 'pt-PT',
+            'slo' => 'sk-SK',
+            'cze' => 'cs-CZ',
+            'pol' => 'pl-PL',
+        ];
+
+        return $mapping[$iso] ?? 'en-GB';
     }
 }
diff --git a/src/Payments/HeidelpayPaymentMethod.php b/src/Payments/HeidelpayPaymentMethod.php
index ad22c99..78cc26d 100644
--- a/src/Payments/HeidelpayPaymentMethod.php
+++ b/src/Payments/HeidelpayPaymentMethod.php
@@ -1,5 +1,5 @@
 <?php // phpcs:disable PSR1.Files.SideEffects.FoundWithSymbols
-declare(strict_types = 1);
+declare(strict_types=1);
 
 namespace Plugin\s360_unzer_shop5\src\Payments;
 
@@ -23,12 +23,14 @@
 use Plugin\s360_unzer_shop5\src\Payments\Traits\HasPayStatus;
 use Plugin\s360_unzer_shop5\src\Payments\Traits\HasState;
 use Plugin\s360_unzer_shop5\src\Payments\Traits\PriceCurrencyConverter;
+use Plugin\s360_unzer_shop5\src\Utils\Compatibility;
 use Plugin\s360_unzer_shop5\src\Utils\Config;
 use Plugin\s360_unzer_shop5\src\Utils\JtlLoggerTrait;
 use Plugin\s360_unzer_shop5\src\Utils\SessionHelper;
 use Plugin\s360_unzer_shop5\src\Utils\TranslatorTrait;
 use RuntimeException;
 use stdClass;
+use Throwable;
 
 /**
  * Basic Heidepay Payment Method
@@ -37,6 +39,12 @@
  */
 abstract class HeidelpayPaymentMethod extends Method implements NotificationInterface, PaymentStatusInterface
 {
+    use JtlLoggerTrait;
+    use TranslatorTrait;
+    use HasState;
+    use HasPayStatus;
+    use PriceCurrencyConverter;
+
     // Order Attributes
     public const ATTR_IBAN = 'unzer_iban';
     public const ATTR_BIC = 'unzer_bic';
@@ -46,47 +54,25 @@ abstract class HeidelpayPaymentMethod extends Method implements NotificationInte
     public const ATTR_PAYMENT_ID = 'unzer_payment_id';
     public const ATTR_PAYMENT_TYPE_ID = 'unzer_payment_type_id';
 
-    use JtlLoggerTrait;
-    use TranslatorTrait;
-    use HasState;
-    use HasPayStatus;
-    use PriceCurrencyConverter;
-
-    /**
-     * @var PluginInterface
-     */
-    protected $plugin;
-
-    /**
-     * @var SessionHelper
-     */
-    protected $sessionHelper;
-
-    /**
-     * @var HeidelpayApiAdapter
-     */
-    protected $adapter;
-
-    /**
-     * @var PaymentHandler
-     */
-    protected $handler;
-
-    /**
-     * @var string
-     */
-    public $hash = '';
+    protected PluginInterface $plugin;
+    protected SessionHelper $sessionHelper;
+    protected HeidelpayApiAdapter $adapter;
+    protected PaymentHandler $handler;
+    public string $hash = '';
 
     /**
      * Perform the transaction on the payment type (i.e. authorize or charge).
      *
      * @param BasePaymentType $payment
-     * @param stdClass|Bestellung $order
+     * @param Bestellung $order
      * @return AbstractTransactionType
      * @throws UnzerApiException A UnzerApiException is thrown if there is an error returned on API-request.
      * @throws RuntimeException      A RuntimeException is thrown when there is an error while using the SDK.
      */
-    abstract protected function performTransaction(BasePaymentType $payment, $order): AbstractTransactionType;
+    abstract protected function performTransaction(
+        BasePaymentType $payment,
+        Bestellung $order
+    ): AbstractTransactionType;
 
     /**
      * Get order attributes for a specific order
@@ -110,11 +96,16 @@ public function init($nAgainCheckout = 0): self
     {
         parent::init($nAgainCheckout);
 
-        $this->plugin = Shop::Container()->get(Config::PLUGIN_ID);
-        $this->sessionHelper = Shop::Container()->get(SessionHelper::class);
-        $this->handler = Shop::Container()->get(PaymentHandler::class);
-        $this->adapter = Shop::Container()->get(HeidelpayApiAdapter::class);
-        $this->handler->setPaymentMethod($this);
+        try {
+            $this->plugin = Shop::Container()->get(Config::PLUGIN_ID);
+            $this->sessionHelper = Shop::Container()->get(SessionHelper::class);
+            $this->handler = Shop::Container()->get(PaymentHandler::class);
+            $this->adapter = Shop::Container()->get(HeidelpayApiAdapter::class);
+            $this->handler->setPaymentMethod($this);
+        } catch (\Exception $exc) {
+            $this->state = self::STATE_INVALID;
+            $this->errorLog('Could not init PaymentMethod: ' . $exc->getMessage(), static::class);
+        }
 
         return $this;
     }
@@ -219,6 +210,12 @@ public function getReturnURL($order): string
      */
     public function handleAdditional($post): bool
     {
+        // Clear session if the user changed the currency otherwise we might use the wrong IDs for a new keypair
+        if (Request::verifyGPDataString('curr')) {
+            $this->sessionHelper->clearCheckoutSession();
+            $this->sessionHelper->clear(SessionHelper::KEY_CUSTOMER_ID);
+        }
+
         $this->handler->prepareView();
         $paymentData = $this->sessionHelper->getCheckoutSession();
 
@@ -255,6 +252,11 @@ public function validateAdditional(): bool
             return false;
         }
 
+        // Save Customer ID if it exists
+        if (isset($postPaymentData['customerId'])) {
+            $this->sessionHelper->set(SessionHelper::KEY_CUSTOMER_ID, $postPaymentData['customerId']);
+        }
+
         // Check Form Inputs
         if (isset($postPaymentData['resourceId'])) {
             // Abort if CSRF Token is invalid
@@ -284,6 +286,10 @@ public function validateAdditional(): bool
      */
     public function isValidIntern($args = []): bool
     {
+        if ($this->state == self::STATE_INVALID) {
+            return false;
+        }
+
         if ($this->duringCheckout) {
             $this->state = self::STATE_DURING_CHECKOUT;
         }
@@ -322,6 +328,7 @@ public function finalizeOrder(Bestellung $order, string $hash, array $args): boo
     {
         // Validate Payment Request (check: currency changed, order amount, cart checksum)
         if (isset($args['state']) && $args['state'] == self::STATE_DURING_CHECKOUT) {
+            $this->adapter->getConnectionForOrder($order);
             $payment = $this->adapter->fetchPayment();
 
             // Invalid Request (basket, currency mismatch)
@@ -375,16 +382,20 @@ public function handleNotification($order, $hash, $args): void
         $this->handler->finishPayment($hash);
 
         try {
+            $this->adapter->getConnectionForOrder($order);
             $payment = $this->adapter->fetchPayment();
             $transaction = $this->adapter->getPaymentTransaction($payment);
 
-            // Preorder = 1 => Order was not finalized before and therefore no order mapping was saved. Do this now!
-            if (isset($args['state']) && $args['state'] == self::STATE_DURING_CHECKOUT) {
-                // update cBestellNummer because we already have generated it but have no way of telling JTL to use
-                // it in the notify.php so a new one gets generated resulting in mismatched order ids ...
-                $order->cBestellNr = $transaction->getOrderId();
+            // update cBestellNummer because we already have generated it but have no way of telling JTL to use
+            // it in the notify.php so a new one gets generated resulting in mismatched order ids ...
+            $orderNumber = $this->sessionHelper->get(SessionHelper::KEY_ORDER_ID);
+            if (!empty($orderNumber) && $orderNumber != $order->cBestellNr) {
+                $order->cBestellNr = $orderNumber;
                 $order->updateInDB();
+            }
 
+            // Preorder = 1 => Order was not finalized before and therefore no order mapping was saved. Do this now!
+            if (isset($args['state']) && $args['state'] == self::STATE_DURING_CHECKOUT) {
                 $this->handler->saveOrderMapping($transaction->getPayment(), $order);
             }
 
@@ -409,11 +420,14 @@ public function handleNotification($order, $hash, $args): void
                 // Accept successful payment and clean up session
                 $this->handler->acceptPayment($order, $hash, $transaction);
                 $this->sessionHelper->clear();
+                $this->sessionHelper->clear(SessionHelper::KEY_CUSTOMER_ID);
                 $this->sessionHelper->getFrontendSession()->cleanUp();
                 return;
             }
 
             // If the payment is neither successful nor pending, something went wrong.
+            $this->sessionHelper->clear();
+            $this->sessionHelper->clear(SessionHelper::KEY_CUSTOMER_ID);
             $this->handler->revokePayment($order, $hash, $transaction);
             $this->sessionHelper->getFrontendSession()->cleanUp();
 
@@ -444,7 +458,7 @@ public function handleNotification($order, $hash, $args): void
                 'paymentRuntimeException',
                 ['saveInSession' => true]
             );
-        } catch (Exception $exc) {
+        } catch (Throwable $exc) {
             $merchant = 'An error occured in the payment process: ' . $exc->getMessage();
             $this->errorLog($merchant, static::class);
             $this->sessionHelper->getAlertService()->addAlert(
@@ -461,6 +475,8 @@ public function handleNotification($order, $hash, $args): void
      */
     public function preparePaymentProcess(Bestellung $order): void
     {
+        $this->adapter->getConnectionForOrder($order);
+        $transaction = null;
         $redirectError = null;
         $hashes = $this->getPaymentHashes((int) $order->kBestellung ?? -1);
 
@@ -472,9 +488,19 @@ public function preparePaymentProcess(Bestellung $order): void
 
         // Preorder State (Preorder = 1), order not finalized
         if ($this->duringCheckout) {
-            $order->cBestellNr = \baueBestellnummer();
-            $redirectError = PaymentHandler::REDIRECT_ON_FAILURE_URL;
+            if (Compatibility::isShopAtLeast52()) {
+                $order->cBestellNr = $this->sessionHelper->get(SessionHelper::KEY_ORDER_ID)
+                    ?? getOrderHandler()->createOrderNo();
+            } else {
+                $order->cBestellNr = $this->sessionHelper->get(SessionHelper::KEY_ORDER_ID) ?? \baueBestellnummer();
+            }
+
+            $redirectError = PaymentHandler::REDIRECT_TO_PAYMENT_SELECTION_URL;
             $this->state = self::STATE_DURING_CHECKOUT;
+
+            // Save the generated order id in the session so that we can use it later
+            // instead of generating a new one due to redirects etc.
+            $this->sessionHelper->set(SessionHelper::KEY_ORDER_ID, $order->cBestellNr);
         }
 
         try {
@@ -485,7 +511,9 @@ public function preparePaymentProcess(Bestellung $order): void
             $this->handler->preparePayment($transaction, $order, $redirectError);
         } catch (UnzerApiException $exc) {
             $this->saveFailedTransaction($transaction, $order);
-            $merchant = $exc->getMerchantMessage() . ' | Id: ' . $exc->getErrorId() . ' | Code: ' . $exc->getCode();
+            $key = $this->adapter->getCurrentConnection()->getKey();
+            $key = substr($key, 0, -16) . str_repeat('&bull;', 16);
+            $merchant = $exc->getMerchantMessage() . ' | Id: ' . $exc->getErrorId() . ' | Code: ' . $exc->getCode() . ' | API-Key: ' . $key;
 
             $this->sessionHelper->addErrorAlert(
                 Text::convertUTF8($merchant),
@@ -496,8 +524,12 @@ public function preparePaymentProcess(Bestellung $order): void
             );
         } catch (RuntimeException $exc) {
             $this->saveFailedTransaction($transaction, $order);
+            $key = $this->adapter->getCurrentConnection()->getKey();
+            $key = substr($key, 0, -16) . str_repeat('&bull;', 16);
             $merchant = 'An exception was thrown while using the Heidelpay SDK: ';
             $merchant .= Text::convertUTF8($exc->getMessage());
+            $merchant .= ' | API-Key: ' . $key;
+
             $this->sessionHelper->addErrorAlert(
                 $merchant,
                 $this->trans(Config::LANG_PAYMENT_PROCESS_RUNTIME_EXCEPTION),
@@ -505,9 +537,12 @@ public function preparePaymentProcess(Bestellung $order): void
                 $redirectError,
                 static::class
             );
-        } catch (Exception $exc) {
+        } catch (Throwable $exc) {
             $this->saveFailedTransaction($transaction, $order);
-            $merchant = 'An error occured in the payment process: ' . $exc->getMessage();
+            $key = $this->adapter->getCurrentConnection()->getKey();
+            $key = substr($key, 0, -16) . str_repeat('&bull;', 16);
+            $merchant = 'An error occured in the payment process: ' . $exc->getMessage() . ' | API-Key: ' . $key;
+
             $this->sessionHelper->addErrorAlert(
                 $merchant,
                 $this->trans(Config::LANG_PAYMENT_PROCESS_EXCEPTION),
@@ -522,18 +557,24 @@ public function preparePaymentProcess(Bestellung $order): void
      *  If performing the transaction failed, save the order mapping because the order is still created!
      *
      * @param BasePaymentTyp|null $transaction
-     * @param Bestellung|stdClass $order
+     * @param Bestellung $order
      * @return void
      */
-    private function saveFailedTransaction($transaction, $order): void
+    private function saveFailedTransaction($transaction, Bestellung $order): void
     {
         if (is_null($transaction) && !empty($order->cBestellNr)) {
             try {
-                $payment = $this->adapter->getApi()->fetchPaymentByOrderId($order->cBestellNr);
+                $payment = $this->adapter->getConnectionForOrder($order)->fetchPaymentByOrderId($order->cBestellNr);
                 $this->handler->saveOrderMapping($payment, $order);
             } catch (Exception $err) {
-                $this->errorLog('An error occured in the payment process: ' . $err->getMessage(), static::class);
+                $key = $this->adapter->getCurrentConnection()->getKey();
+                $key = substr($key, 0, -16) . str_repeat('&bull;', 16);
+                $this->errorLog('An error occured in the payment process: ' . $err->getMessage() . "\nCurrent API Connection: " . $key, static::class);
             }
+
+            $this->sessionHelper->clearCheckoutSession();
+            $this->sessionHelper->clear(SessionHelper::KEY_CUSTOMER_ID);
+            $this->sessionHelper->clear(SessionHelper::KEY_ORDER_ID);
         }
     }
 }
diff --git a/src/Payments/PaymentHandler.php b/src/Payments/PaymentHandler.php
index cd910c7..a772ab1 100644
--- a/src/Payments/PaymentHandler.php
+++ b/src/Payments/PaymentHandler.php
@@ -1,4 +1,6 @@
-<?php declare(strict_types = 1);
+<?php
+
+declare(strict_types=1);
 
 namespace Plugin\s360_unzer_shop5\src\Payments;
 
@@ -10,15 +12,18 @@
 use JTL\Helpers\Text;
 use JTL\Plugin\Payment\MethodInterface;
 use JTL\Plugin\PluginInterface;
+use JTL\Session\Frontend;
 use JTL\Shop;
 use Plugin\s360_unzer_shop5\src\Charges\ChargeHandler;
 use Plugin\s360_unzer_shop5\src\Orders\OrderMappingEntity;
 use Plugin\s360_unzer_shop5\src\Orders\OrderMappingModel;
 use Plugin\s360_unzer_shop5\src\Payments\Interfaces\RedirectPaymentInterface;
+use Plugin\s360_unzer_shop5\src\Utils\Compatibility;
 use Plugin\s360_unzer_shop5\src\Utils\Config;
 use Plugin\s360_unzer_shop5\src\Utils\JtlLoggerTrait;
 use Plugin\s360_unzer_shop5\src\Utils\SessionHelper;
 use Plugin\s360_unzer_shop5\src\Utils\TranslatorTrait;
+use UnzerSDK\Resources\TransactionTypes\Authorization;
 
 /**
  * Heidelpay Payment Handler.
@@ -36,49 +41,14 @@ class PaymentHandler
     public const REDIRECT_ON_FAILURE_URL = 'bestellvorgang.php';
     public const REDIRECT_TO_PAYMENT_SELECTION_URL = 'bestellvorgang.php?editZahlungsart=1';
 
-    /**
-     * @var PluginInterface
-     */
-    protected $plugin;
-
-    /**
-     * @var Config
-     */
-    protected $config;
-
-    /**
-     * @var SessionHelper
-     */
-    protected $sessionHelper;
-
-    /**
-     * @var HeidelpayApiAdapter
-     */
-    protected $adapter;
-
-    /**
-     * @var ChargeHandler
-     */
-    protected $charges;
-
-    /**
-     * @var OrderMappingModel
-     */
-    protected $model;
-
-    /**
-     * @var HeidelpayPaymentMethod
-     */
-    protected $paymentMethod;
+    protected PluginInterface $plugin;
+    protected Config $config;
+    protected SessionHelper $session;
+    protected HeidelpayApiAdapter $adapter;
+    protected ChargeHandler $charges;
+    protected OrderMappingModel $model;
+    protected HeidelpayPaymentMethod $paymentMethod;
 
-    /**
-     * @param PluginInterface $plugin
-     * @param Config $config
-     * @param SessionHelper $session
-     * @param HeidelpayApiAdapter $adapter
-     * @param ChargeHandler $charges
-     * @param OrderMappingModel $model
-     */
     public function __construct(
         PluginInterface $plugin,
         Config $config,
@@ -132,10 +102,12 @@ public function preparePayment(AbstractTransactionType $transaction, Bestellung
         }
 
         // Redirect Payment
-        if (!$transaction->isError() && $this->isRedirectPayment($this->paymentMethod)
+        if (
+            !$transaction->isError() && $this->isRedirectPayment($this->paymentMethod)
             && $transaction->getRedirectUrl() !== null
         ) {
-            $this->adapter->redirectTransaction($transaction, $_POST);
+            $this->adapter->redirectTransaction($transaction, $order, $_POST);
+            return;
         }
 
         // No-Redirect and no error -> success, so we create the order
@@ -148,12 +120,20 @@ public function preparePayment(AbstractTransactionType $transaction, Bestellung
             }
 
             // Preorder=1, order not finalized yet -> finalize and save the order
-            $finalizedOrder = finalisiereBestellung($transaction->getPayment()->getOrderId() ?? '');
+            if (Compatibility::isShopAtLeast52()) {
+                $finalizedOrder = getOrderHandler()->finalizeOrder(
+                    $this->session->get(SessionHelper::KEY_ORDER_ID) ?? ''
+                );
+            } else {
+                $finalizedOrder = finalisiereBestellung($this->session->get(SessionHelper::KEY_ORDER_ID) ?? '');
+            }
+
             $this->saveOrderMapping($transaction->getPayment(), $finalizedOrder);
             $this->acceptPayment($finalizedOrder, $this->paymentMethod->hash, $transaction);
 
             // Pretend we were redirected to notify -> Redirect to success page
             $this->session->clear();
+            $this->session->clear(SessionHelper::KEY_CUSTOMER_ID);
             $orderHash = $this->paymentMethod->getOrderHash($finalizedOrder);
             $this->debugLog('Redirecting to bestellabschluss.php?i=' . $orderHash, get_class($this->paymentMethod));
             header('Location: bestellabschluss.php?i=' . $orderHash);
@@ -316,7 +296,7 @@ public function validatePaymentRequest(Payment $payment): bool
         }
 
         if ($this->basketChanged($payment)) {
-            $this->plugin->getSession->addErrorAlert(
+            $this->session->addErrorAlert(
                 'Aborting Checkout. Basket mismatch.',
                 $this->trans(Config::LANG_PAYMENT_PROCESS_EXCEPTION),
                 'transactionAborted',
@@ -339,7 +319,7 @@ public function validatePaymentRequest(Payment $payment): bool
     public function currencyChanged(Payment $payment): bool
     {
         $currency = $this->session->getFrontendSession()->getCurrency();
-        return $currency->cISO !== $payment->getCurrency();
+        return $currency->getCode() !== $payment->getCurrency();
     }
 
     /**
@@ -366,9 +346,12 @@ public function basketChanged(Payment $payment): bool
      */
     public function saveOrderMapping(Payment $payment, Bestellung $order): void
     {
-        /** @var Charge $charge */
         $charge = $payment->getChargeByIndex(0);
-        $uniqId = $charge->getUniqueId();
+        $uniqId = null;
+
+        if ($charge instanceof Charge || $charge instanceof Authorization) {
+            $uniqId = $charge->getUniqueId();
+        }
 
         $entity = new OrderMappingEntity();
         $entity->setId((int) $order->kBestellung);
@@ -378,6 +361,7 @@ public function saveOrderMapping(Payment $payment, Bestellung $order): void
         $entity->setPaymentState($payment->getStateName());
         $entity->setPaymentTypeId($payment->getPaymentType() ? $payment->getPaymentType()->getId() : '');
         $entity->setPaymentTypeName($payment->getPaymentType() ? $payment->getPaymentType()->getResourceName() : '');
+        $entity->setPaymentMethodId((int)$order->kZahlungsart);
 
         $this->model->save($entity);
     }
@@ -403,6 +387,8 @@ public function prepareView(): void
         $smarty = Shop::Smarty();
         $data = $smarty->getTemplateVars('hpPayment') ?: [];
 
+        $this->adapter->getConnectionForSession();
+
         $data['frontendTemplateUrl'] = $this->plugin->getPaths()->getFrontendURL() . 'template/';
         $data['frontendUrl']         = $this->plugin->getPaths()->getFrontendURL();
         $data['frontendPath']        = $this->plugin->getPaths()->getFrontendPath();
@@ -415,6 +401,13 @@ public function prepareView(): void
             $this->session->getFrontendSession()->getLanguage()->cISOSprache ?? 'eng'
         );
 
+        $publicKey = $this->adapter->getKeypairService()->getPublicKey(
+            isset(Frontend::getCustomer()->cFirma) && strlen(trim(Frontend::getCustomer()->cFirma)) > 0,
+            (int) Frontend::getCurrency()->getID(),
+            (int) Frontend::get('AktiveZahlungsart')
+        );
+        $data['publicKey'] = $publicKey ?? $this->adapter->getKeypairService()->getDefaultPublicKey();
+
         $smarty->assign('hpPayment', $data);
     }
 }
diff --git a/src/Payments/PaymentMethodModuleFactory.php b/src/Payments/PaymentMethodModuleFactory.php
index c97381b..1ae71c0 100644
--- a/src/Payments/PaymentMethodModuleFactory.php
+++ b/src/Payments/PaymentMethodModuleFactory.php
@@ -1,5 +1,6 @@
 <?php
-declare(strict_types = 1);
+
+declare(strict_types=1);
 
 namespace Plugin\s360_unzer_shop5\src\Payments;
 
@@ -23,9 +24,16 @@
 use InvalidArgumentException;
 use JTL\Plugin\Payment\Method;
 use JTL\Shop;
+use Plugin\s360_unzer_shop5\paymentmethod\UnzerApplePay;
+use Plugin\s360_unzer_shop5\paymentmethod\UnzerBancontact;
+use Plugin\s360_unzer_shop5\paymentmethod\UnzerPaylaterDirectDebit;
+use Plugin\s360_unzer_shop5\paymentmethod\UnzerPaylaterInstallment;
+use Plugin\s360_unzer_shop5\paymentmethod\UnzerPaylaterInvoice;
 use Plugin\s360_unzer_shop5\src\Utils\Config;
 use UnzerSDK\Constants\IdStrings;
 use UnzerSDK\Resources\PaymentTypes\Alipay;
+use UnzerSDK\Resources\PaymentTypes\Applepay;
+use UnzerSDK\Resources\PaymentTypes\Bancontact;
 use UnzerSDK\Resources\PaymentTypes\BasePaymentType;
 use UnzerSDK\Resources\PaymentTypes\Card;
 use UnzerSDK\Resources\PaymentTypes\EPS;
@@ -34,6 +42,9 @@
 use UnzerSDK\Resources\PaymentTypes\InstallmentSecured;
 use UnzerSDK\Resources\PaymentTypes\Invoice;
 use UnzerSDK\Resources\PaymentTypes\InvoiceSecured;
+use UnzerSDK\Resources\PaymentTypes\PaylaterDirectDebit;
+use UnzerSDK\Resources\PaymentTypes\PaylaterInstallment;
+use UnzerSDK\Resources\PaymentTypes\PaylaterInvoice;
 use UnzerSDK\Resources\PaymentTypes\Paypal;
 use UnzerSDK\Resources\PaymentTypes\PIS;
 use UnzerSDK\Resources\PaymentTypes\Prepayment;
@@ -78,10 +89,16 @@ class PaymentMethodModuleFactory
         HeidelpaySofort::class                    => 'unzersofort',
         HeidelpaySEPADirectDebit::class           => ['unzersepalastschrift', 'unzerlastschrift'],
         HeidelpaySEPADirectDebitGuaranteed::class => ['unzersepalastschrift(guaranteed)', 'unzerlastschrift(secured)'],
-        HeidelpayWeChatPay::class                 => 'unzerwechatpay'
+        HeidelpayWeChatPay::class                 => 'unzerwechatpay',
+        UnzerApplePay::class                      => 'unzerapplepay',
+        UnzerPaylaterInvoice::class               => 'unzerrechnung(jetztkaufen,späterbezahlen)',
+        UnzerBancontact::class                    => 'unzerbancontact',
+        UnzerPaylaterInstallment::class           => 'unzerratenzahlung(paylater)',
+        UnzerPaylaterDirectDebit::class           => 'unzerlastschrift(paylater)',
     ];
 
     private const FACTORIES = [
+        Applepay::class                  => 'createApplePayModule',
         Alipay::class                    => 'createAlipayModule',
         Card::class                      => 'createCardModule',
         EPS::class                       => 'createEPSModule',
@@ -92,6 +109,7 @@ class PaymentMethodModuleFactory
         // InvoiceFactoring::class          => 'createInvoiceFactoringModule',
         // InvoiceGuaranteed::class         => 'createInvoiceGuaranteedModule',
         InvoiceSecured::class            => 'createInvoiceSecuredModule',
+        PaylaterInvoice::class           => 'createPaylaterInvoiceModule',
         Paypal::class                    => 'createPaypalModule',
         PIS::class                       => 'createFlexiPayDirectModule',
         Prepayment::class                => 'createPrepaymentModule',
@@ -99,7 +117,10 @@ class PaymentMethodModuleFactory
         SepaDirectDebit::class           => 'createSepaDirectDebitModule',
         SepaDirectDebitSecured::class    => 'createSepaDirectDebitGuaranteedModule',
         Sofort::class                    => 'createSofortModule',
-        Wechatpay::class                 => 'createWechatpayModule'
+        Wechatpay::class                 => 'createWechatpayModule',
+        Bancontact::class                => 'createBancontactModule',
+        PaylaterInstallment::class       => 'createPaylaterInstallmentModule',
+        PaylaterDirectDebit::class       => 'createPaylaterDirectDebitModule',
     ];
 
     public function __construct()
@@ -153,6 +174,26 @@ private function create(string $moduleKey): HeidelpayPaymentMethod
         }
     }
 
+    /**
+     * Create Bancontact Payment Module.
+     *
+     * @return HeidelpayPaymentMethod|UnzerBancontact
+     */
+    public function createBancontactModule(): HeidelpayPaymentMethod
+    {
+        return $this->create(UnzerBancontact::class);
+    }
+
+    /**
+     * Create ApplePay Payment Module.
+     *
+     * @return HeidelpayPaymentMethod|UnzerApplePay
+     */
+    public function createApplePayModule(): HeidelpayPaymentMethod
+    {
+        return $this->create(UnzerApplePay::class);
+    }
+
     /**
      * Create Alipay Payment Module.
      *
@@ -265,6 +306,35 @@ public function createInvoiceSecuredModule(): HeidelpayPaymentMethod
         return $this->create($module);
     }
 
+    /**
+     * Create Paylater Invoice Payment Module.
+     *
+     * @return HeidelpayPaymentMethod|UnzerPaylaterInvoice
+     */
+    public function createPaylaterInvoiceModule(): HeidelpayPaymentMethod
+    {
+        return $this->create(UnzerPaylaterInvoice::class);
+    }
+
+    /**
+     * Create Paylater Installment Payment Module.
+     *
+     * @return HeidelpayPaymentMethod|UnzerPaylaterInstallment
+     */
+    public function createPaylaterInstallmentModule(): HeidelpayPaymentMethod
+    {
+        return $this->create(UnzerPaylaterInstallment::class);
+    }
+
+    /**
+     * Create Paylater Direct Debit Payment Module.
+     *
+     * @return HeidelpayPaymentMethod|UnzerPaylaterDirectDebit
+     */
+    public function createPaylaterDirectDebitModule(): HeidelpayPaymentMethod
+    {
+        return $this->create(UnzerPaylaterDirectDebit::class);
+    }
 
     /**
      * Create Paypayl Payment Module.
diff --git a/src/Payments/Traits/HasBasket.php b/src/Payments/Traits/HasBasket.php
index e06527b..cfccd3c 100644
--- a/src/Payments/Traits/HasBasket.php
+++ b/src/Payments/Traits/HasBasket.php
@@ -1,4 +1,6 @@
-<?php declare(strict_types = 1);
+<?php
+
+declare(strict_types=1);
 
 namespace Plugin\s360_unzer_shop5\src\Payments\Traits;
 
@@ -7,9 +9,11 @@
 use UnzerSDK\Resources\EmbeddedResources\BasketItem;
 use JTL\Cart\Cart;
 use JTL\Cart\CartItem;
+use JTL\Catalog\Currency;
 use JTL\Helpers\Tax;
 use JTL\Helpers\Text;
 use JTL\Language\LanguageHelper;
+use JTL\Session\Frontend;
 
 /**
  * Payment Methods which require a Basket object.
@@ -20,40 +24,94 @@
 trait HasBasket
 {
     /**
-     * Create a Heidelpay Basket instance.
+     * Create apple pay line items from cart
      *
      * @param Cart $cart
      * @param object $currency
      * @param LanguageHelper $lang
      * @param string $orderId
-     * @return Basket
+     * @return array
      */
-    protected function createHeidelpayBasket(Cart $cart, $currency, LanguageHelper $lang, string $orderId = ''): Basket
+    protected function createApplePayLineItems(Cart $cart, $currency, LanguageHelper $lang, string $orderId = ''): array
     {
-        $basket = (new Basket($orderId))
-            ->setAmountTotalGross($cart->gibGesamtsummeWaren(true, false))
-            ->setCurrencyCode($currency->cISO ?? '');
+        $basket = $this->createHeidelpayBasket($cart, $currency, $lang, $orderId);
+        $lineItems = [];
+
+        foreach ($basket->getBasketItems() as $lineItem) {
+            /** @var BasketItem $lineItem */
+            $lineItems[] = [
+                'label'  => $lineItem->getTitle(),
+                'amount' => round($lineItem->getAmountPerUnitGross() * $lineItem->getQuantity(), 2), // Total Amount
+                'type'   => 'final'
+            ];
+        }
 
-        $cumulatedDelta    = 0;
-        $cumulatedDeltaNet = 0;
-        $amountTotalDiscount = 0;
+        return $lineItems;
+    }
 
+    /**
+     * Create a Heidelpay Basket instance.
+     *
+     * @param Cart $cart
+     * @param Currency|object $currency
+     * @param LanguageHelper $lang
+     * @param string $orderId
+     * @return Basket
+     */
+    protected function createHeidelpayBasket(Cart $cart, $currency, LanguageHelper $lang, string $orderId = ''): Basket
+    {
+        $basket = (new Basket())
+            ->setOrderId($orderId)
+            ->setTotalValueGross(
+                round($cart->gibGesamtsummeWaren(true, false) * Frontend::getCurrency()->getConversionFactor(), 2)
+            )
+            ->setCurrencyCode(($currency instanceof Currency ? $currency->getCode() : $currency->cISO) ?? '');
+
+        $cumulatedDelta = 0;
         foreach ($cart->PositionenArr as $position) {
             $basketItem = $this->createHeidelpayBasketItem(
                 $position,
                 $lang,
-                $cumulatedDelta,
-                $cumulatedDeltaNet,
-                $amountTotalDiscount
+                $cumulatedDelta
             );
+
+            // Skip free products which are not a discount because the unzer api does not like them!
+            if ($basketItem->getAmountPerUnitGross() == 0 && $basketItem->getAmountDiscountPerUnitGross() == 0) {
+                continue;
+            }
+
             $basket->addBasketItem($basketItem);
         }
-        $basket->setAmountTotalDiscount($amountTotalDiscount);
 
-        // AmountTotalGross should be the total amount without any coupouns, discounts applied
-        // but gibGesamtsummeWaren() does not consider coupon/voucher positions, so have have to add them here ...
-        if ($basket->getAmountTotalDiscount()) {
-            $basket->setAmountTotalGross($basket->getAmountTotalGross() + $basket->getAmountTotalDiscount());
+        // Check if there is a mismatch between total value gross and sum of all line items, and if so add
+        // an error correction line item (otherwise the unzer api would throw an error due to the mismatch)
+        $totalValueGross = array_reduce(
+            $basket->getBasketItems(),
+            static function (float $sum, BasketItem $item) {
+                $sum += ($item->getAmountPerUnitGross() - $item->getAmountDiscountPerUnitGross()) * $item->getQuantity();
+                return $sum;
+            },
+            0
+        );
+
+        $difference = round($totalValueGross - $basket->getTotalValueGross(), 2);
+        if ($difference < 0) {
+            // Add missing amount as error correction line item
+            $basket->addBasketItem(
+                (new BasketItem())
+                    ->setTitle('ROUNDING ERROR CORRECTION')
+                    ->setQuantity(1)
+                    ->setAmountPerUnitGross($difference * -1)
+            );
+        } elseif ($difference > 0) {
+            // Add "overcharged" amount as discount error correction line item
+            $basket->addBasketItem(
+                (new BasketItem())
+                    ->setTitle('ROUNDING ERROR CORRECTION')
+                    ->setQuantity(1)
+                    ->setAmountPerUnitGross(0)
+                    ->setAmountDiscountPerUnitGross($difference)
+            );
         }
 
         return $basket;
@@ -65,16 +123,12 @@ protected function createHeidelpayBasket(Cart $cart, $currency, LanguageHelper $
      * @param CartItem $position
      * @param LanguageHelper $lang
      * @param float $cumulatedDelta    Rounding Error Delta, @see Cart::useSummationRounding
-     * @param float $cumulatedDeltaNet Rounding Error Delta, @see Cart::useSummationRounding
-     * @param float $amountTotalDiscount
      * @return BasketItem
      */
     protected function createHeidelpayBasketItem(
         CartItem $position,
         LanguageHelper $lang,
-        float &$cumulatedDelta,
-        float &$cumulatedDeltaNet,
-        float &$amountTotalDiscount
+        float &$cumulatedDelta
     ): BasketItem {
         $title = $position->cName;
         if (\is_array($title)) {
@@ -82,39 +136,34 @@ protected function createHeidelpayBasketItem(
         }
 
         // !NOTE: JTL distributes its rounding errors of the total basket sum to the cart positions,
-        // ! so we have to do the same ...
+        // ! so we have to do the same (kinda, as we just need the gross amount per unit and not total) ...
         $grossAmount        = Tax::getGross(
-            $position->fPreis * $position->nAnzahl,
+            $position->fPreis * Frontend::getCurrency()->getConversionFactor(),
             Tax::getSalesTax($position->kSteuerklasse),
             12
         );
-        $netAmount          = $position->fPreis * $position->nAnzahl;
         $roundedGrossAmount = Tax::getGross(
-            $position->fPreis * $position->nAnzahl + $cumulatedDelta,
+            $position->fPreis * Frontend::getCurrency()->getConversionFactor() + $cumulatedDelta,
             Tax::getSalesTax($position->kSteuerklasse),
             2
         );
-        $roundedNetAmount   = \round($position->fPreis * $position->nAnzahl + $cumulatedDeltaNet, 2);
-        $cumulatedDelta    += ($grossAmount - $roundedGrossAmount);
-        $cumulatedDeltaNet += ($netAmount - $roundedNetAmount);
 
-        // Set Basket Item
-        $basketItem = new BasketItem(
-            Text::convertUTF8($title),
-            $roundedNetAmount,
-            $position->fPreis,
-            (int) $position->nAnzahl
-        );
+        $cumulatedDelta += ($grossAmount - $roundedGrossAmount);
 
-        $basketItem->setAmountGross($roundedGrossAmount);
+        // Unzer API thinks that -0.0 is a negative amount and therefore not allowed (seen for SEPA secured and B2B)
+        if ($grossAmount === -0.0 || $grossAmount === 0.0) {
+            $roundedGrossAmount = 0;
+        }
 
-        if ($this->isPromotionLineItemType((string) $position->nPosTyp)) {
-            $basketItem->setAmountGross(0);
-            $basketItem->setAmountNet(0);
-            $basketItem->setAmountPerUnit(0);
-            $basketItem->setAmountDiscount($roundedGrossAmount * -1);
+        // Set Basket Item
+        $basketItem = (new BasketItem())
+            ->setTitle(Text::convertUTF8($title ?? ''))
+            ->setAmountPerUnitGross($roundedGrossAmount)
+            ->setQuantity((int) $position->nAnzahl);
 
-            $amountTotalDiscount += $basketItem->getAmountDiscount();
+        if ($this->isPromotionLineItemType((string) $position->nPosTyp)) {
+            $basketItem->setAmountPerUnitGross(0);
+            $basketItem->setAmountDiscountPerUnitGross($roundedGrossAmount * -1);
         }
 
         $basketItem->setVat((float) Tax::getSalesTax($position->kSteuerklasse));
diff --git a/src/Payments/Traits/HasCustomer.php b/src/Payments/Traits/HasCustomer.php
index 9c70cd7..2cd977f 100644
--- a/src/Payments/Traits/HasCustomer.php
+++ b/src/Payments/Traits/HasCustomer.php
@@ -1,4 +1,6 @@
-<?php declare(strict_types = 1);
+<?php
+
+declare(strict_types=1);
 
 namespace Plugin\s360_unzer_shop5\src\Payments\Traits;
 
@@ -9,8 +11,11 @@
 use JTL\Customer\Customer as ShopCustomer;
 use JTL\Helpers\Text;
 use Plugin\s360_unzer_shop5\src\Payments\HeidelpayApiAdapter;
+use Plugin\s360_unzer_shop5\src\Utils\Logger;
 use Plugin\s360_unzer_shop5\src\Utils\SessionHelper;
-use UnzerSDK\Resources\EmbeddedResources\CompanyInfo;
+use UnzerSDK\Constants\ApiResponseCodes;
+use UnzerSDK\Constants\ShippingTypes;
+use UnzerSDK\Exceptions\UnzerApiException;
 
 /**
  * Payment Methods which require a Customer object.
@@ -35,19 +40,41 @@ protected function createOrFetchHeidelpayCustomer(
     ): Customer {
         if ($session->has(SessionHelper::KEY_CUSTOMER_ID) && $session->get(SessionHelper::KEY_CUSTOMER_ID) != -1) {
             $frontSession = $session->getFrontendSession();
-            $customer = $adapter->getApi()->fetchCustomer($session->get(SessionHelper::KEY_CUSTOMER_ID));
+
+            // Try to fetch customer
+            try {
+                $customer = $adapter->getCurrentConnection()->fetchCustomer($session->get(SessionHelper::KEY_CUSTOMER_ID));
+            } catch (UnzerApiException $exc) {
+                if ($exc->getCode() === ApiResponseCodes::API_ERROR_CUSTOMER_DOES_NOT_EXIST) {
+                    Logger::debug($exc->getMessage() . ' - maybe due to key pair change and invalid session');
+                }
+
+                // Could not load customer for their saved id -> try to create a new customer
+                $session->clear(SessionHelper::KEY_CUSTOMER_ID);
+                return $this->createOrFetchHeidelpayCustomer($adapter, $session, $isB2B);
+            }
 
             if (!empty($frontSession->getCustomer()->cFirma) && empty($customer->getCompany())) {
-                $customer->setCompany(Text::convertUTF8($frontSession->getCustomer()->cFirma));
+                $customer->setCompany(Text::convertUTF8(html_entity_decode($frontSession->getCustomer()->cFirma)));
             }
 
             // Update names as they might have changed (but not on B2B so that we do not overwrite the B2B Form changes)
             if (!$isB2B) {
-                $customer->setFirstname(Text::convertUTF8($frontSession->getCustomer()->cVorname));
-                $customer->setLastname(Text::convertUTF8($frontSession->getCustomer()->cNachname));
+                $customer->setFirstname(Text::convertUTF8(html_entity_decode($frontSession->getCustomer()->cVorname)));
+                $customer->setLastname(Text::convertUTF8(html_entity_decode($frontSession->getCustomer()->cNachname)));
+
+                if ($customer->getShippingAddress()->getShippingType() === ShippingTypes::DIFFERENT_ADDRESS) {
+                    $customer->setFirstname(
+                        Text::convertUTF8(html_entity_decode($frontSession->getDeliveryAddress()->cVorname))
+                    );
+                    $customer->setLastname(
+                        Text::convertUTF8(html_entity_decode($frontSession->getDeliveryAddress()->cNachname))
+                    );
+                }
 
                 // Remove Company Infomartion as we do not want to be treated as a B2B User
                 $customer->setCompany(null);
+                // $customer->setCompanyInfo(new CompanyInfo());
             }
 
             return $customer;
@@ -59,7 +86,7 @@ protected function createOrFetchHeidelpayCustomer(
             return $this->createHeidelpayB2BCustomer($session->getFrontendSession()->getCustomer());
         }
 
-        return $adapter->getApi()->createOrUpdateCustomer(
+        return $adapter->getCurrentConnection()->createOrUpdateCustomer(
             $this->createHeidelpayCustomer($session->getFrontendSession()->getCustomer())
         );
     }
@@ -73,14 +100,28 @@ protected function createOrFetchHeidelpayCustomer(
     protected function createHeidelpayCustomer(ShopCustomer $customer): Customer
     {
         $customerObj = CustomerFactory::createCustomer(
-            Text::convertUTF8($customer->cVorname),
-            Text::convertUTF8($customer->cNachname)
+            Text::convertUTF8(html_entity_decode($customer->cVorname)),
+            Text::convertUTF8(html_entity_decode($customer->cNachname))
         );
 
+        if (
+            !empty($customer->dGeburtstag) &&
+            $customer->dGeburtstag !== '0000-00-00' &&
+            $customer->dGeburtstag !== '_DBNULL_'
+        ) {
+            $customerObj->setBirthDate(date('Y-m-d', strtotime($customer->dGeburtstag)));
+        }
+
         $customerObj->setEmail($customer->cMail);
 
+        if (!empty($customer->cFirma)) {
+            $customerObj->setCompany(
+                html_entity_decode(utf8_encode($customer->cFirma), ENT_COMPAT, 'UTF-8')
+            );
+        }
+
         // Set external customer so we do not have to map it ourself.
-        $customerObj->setCustomerId($customer->kKunde);
+        $customerObj->setCustomerId((string) $customer->kKunde);
 
         return $customerObj;
     }
@@ -93,12 +134,17 @@ protected function createHeidelpayCustomer(ShopCustomer $customer): Customer
      */
     protected function createHeidelpayAddress($address): Address
     {
+        $type = $_SESSION['Bestellung'] && $_SESSION['Bestellung']->kLieferadresse == -1
+            ? ShippingTypes::DIFFERENT_ADDRESS
+            : ShippingTypes::EQUALS_BILLING;
+
         return (new Address())
-            ->setName(Text::convertUTF8($address->cVorname . ' ' . $address->cNachname))
-            ->setStreet(Text::convertUTF8($address->cStrasse . ' ' . $address->cHausnummer))
-            ->setZip(Text::convertUTF8($address->cPLZ))
-            ->setCity(Text::convertUTF8($address->cOrt))
-            ->setCountry(Text::convertUTF8($address->cLand));
+            ->setName(Text::convertUTF8(html_entity_decode($address->cVorname . ' ' . $address->cNachname)))
+            ->setStreet(Text::convertUTF8(html_entity_decode($address->cStrasse . ' ' . $address->cHausnummer)))
+            ->setZip(Text::convertUTF8(html_entity_decode($address->cPLZ)))
+            ->setCity(Text::convertUTF8(html_entity_decode($address->cOrt)))
+            ->setCountry(Text::convertUTF8(html_entity_decode($address->cLand)))
+            ->setShippingType($type);
     }
 
     /**
@@ -110,25 +156,28 @@ protected function createHeidelpayAddress($address): Address
     protected function createHeidelpayB2BCustomer(ShopCustomer $customer): Customer
     {
         $address  = (new Address())
-            ->setName(Text::convertUTF8($customer->cVorname . ' ' . $customer->cNachname))
-            ->setStreet(Text::convertUTF8($customer->cStrasse . ' ' . $customer->cHausnummer))
-            ->setZip(Text::convertUTF8($customer->cPLZ))
-            ->setCity(Text::convertUTF8($customer->cOrt))
-            ->setCountry(Text::convertUTF8($customer->cLand));
+            ->setName(Text::convertUTF8(html_entity_decode($customer->cVorname . ' ' . $customer->cNachname)))
+            ->setStreet(Text::convertUTF8(html_entity_decode($customer->cStrasse . ' ' . $customer->cHausnummer)))
+            ->setZip(Text::convertUTF8(html_entity_decode($customer->cPLZ)))
+            ->setCity(Text::convertUTF8(html_entity_decode($customer->cOrt)))
+            ->setCountry(Text::convertUTF8(html_entity_decode($customer->cLand)));
 
         // Registered = registered in the commercial register with a commercial register number
         if ($customer->cUSTID) {
             $obj = CustomerFactory::createRegisteredB2bCustomer(
                 $address,
-                Text::convertUTF8($customer->cUSTID),
-                Text::convertUTF8($customer->cFirma)
+                Text::convertUTF8(html_entity_decode($customer->cUSTID)),
+                Text::convertUTF8(html_entity_decode($customer->cFirma))
             );
 
-            $obj->setFirstname(Text::convertUTF8($customer->cVorname));
-            $obj->setLastname(Text::convertUTF8($customer->cNachname));
+            $obj->setFirstname(Text::convertUTF8(html_entity_decode($customer->cVorname)));
+            $obj->setLastname(Text::convertUTF8(html_entity_decode($customer->cNachname)));
             $obj->setEmail($customer->cMail);
-            $obj->setSalutation($customer->cAnrede == 'm' ? 'mr' : 'mrs');
-            $obj->setCustomerId($customer->kKunde);
+            $obj->setCustomerId((string) $customer->kKunde);
+
+            if (!empty($customer->cAnrede)) {
+                $obj->setSalutation($customer->cAnrede == 'm' ? 'mr' : ($customer->cAnrede == 'w' ? 'mrs' : null));
+            }
 
             return $obj;
         }
@@ -140,16 +189,60 @@ protected function createHeidelpayB2BCustomer(ShopCustomer $customer): Customer
         }
 
         $obj = CustomerFactory::createNotRegisteredB2bCustomer(
-            Text::convertUTF8($customer->cVorname),
-            Text::convertUTF8($customer->cNachname),
+            Text::convertUTF8(html_entity_decode($customer->cVorname)),
+            Text::convertUTF8(html_entity_decode($customer->cNachname)),
             $birthday,
             $address,
-            Text::convertUTF8($customer->cMail),
-            Text::convertUTF8($customer->cFirma)
+            Text::convertUTF8(html_entity_decode($customer->cMail)),
+            Text::convertUTF8(html_entity_decode($customer->cFirma))
         );
-        $obj->setSalutation($customer->cAnrede == 'm' ? 'mr' : 'mrs');
-        $obj->setCustomerId($customer->kKunde);
+        $obj->setCustomerId((string) $customer->kKunde);
+
+        if (!empty($customer->cAnrede)) {
+            $obj->setSalutation($customer->cAnrede == 'm' ? 'mr' : ($customer->cAnrede == 'w' ? 'mrs' : null));
+        }
 
         return $obj;
     }
+
+    /**
+     * @param Address $address
+     * @return array{firstname: string, lastname: string}
+     */
+    protected function getNamesFromAddress(Address $address): array
+    {
+        $names = mb_split('\s+', $address->getName() ?? '', 2);
+        if (!empty($names) && \count($names) >= 1) {
+            return [
+                'firstname' => current($names) ?? '',
+                'lastname' => end($names) ?? '',
+            ];
+        }
+
+        return ['firstname' => '', 'lastname' => $address->getName() ?? ''];
+    }
+
+    /**
+     * @param Address $address
+     * @return array{number: string, street: string}
+     */
+    protected function getStreetFromAddress(Address $address): array
+    {
+        $data = ['number' => '', 'street' => ''];
+        $split = mb_split(' ', $address->getStreet() ?? '');
+
+        if (\count($split) > 1) {
+            $data['number'] = $split[count($split) - 1];
+            unset($split[count($split) - 1]);
+            $data['street'] = implode(' ', $split);
+        } else {
+            $sStreet = implode(' ', $split);
+            if (mb_strlen($sStreet) > 1) {
+                $data['number'] = mb_substr($sStreet, -1);
+                $data['street'] = mb_substr($sStreet, 0, -1);
+            }
+        }
+
+        return $data;
+    }
 }
diff --git a/src/Payments/Traits/HasMetadata.php b/src/Payments/Traits/HasMetadata.php
index 79ee82e..4aaad73 100644
--- a/src/Payments/Traits/HasMetadata.php
+++ b/src/Payments/Traits/HasMetadata.php
@@ -1,4 +1,6 @@
-<?php declare(strict_types = 1);
+<?php
+
+declare(strict_types=1);
 
 namespace Plugin\s360_unzer_shop5\src\Payments\Traits;
 
@@ -26,8 +28,9 @@ public function createMetadata(): Metadata
 
         return (new Metadata())
             ->setShopType('JTL')
-            ->setShopVersion(Shop::getApplicationVersion())
-            ->addMetadata('Language', sprintf('PHP %s', phpversion()))
-            ->addMetadata('Plugin', sprintf('%s v%s', Config::PLUGIN_ID, $plugin->getMeta()->getVersion()));
+            ->setShopVersion(\APPLICATION_VERSION)
+            ->addMetadata('pluginType', 'unzerdev/jtl5')
+            ->addMetadata('pluginVersion', (string) $plugin->getMeta()->getVersion())
+            ->addMetadata('PHP', phpversion());
     }
 }
diff --git a/src/Utils/Compatibility.php b/src/Utils/Compatibility.php
new file mode 100644
index 0000000..c12bba6
--- /dev/null
+++ b/src/Utils/Compatibility.php
@@ -0,0 +1,25 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Plugin\s360_unzer_shop5\src\Utils;
+
+
+/**
+ * Helper class to allow for shop version checks if they are necessary to call the correct functions
+ * or handle things differently.
+ *
+ * @package Plugin\s360_unzer_shop5\src\Utils
+ */
+final class Compatibility
+{
+    public static function isShopAtLeast53()
+    {
+        return version_compare(\APPLICATION_VERSION, '5.3.0-beta', '>=');
+    }
+
+    public static function isShopAtLeast52()
+    {
+        return version_compare(\APPLICATION_VERSION, '5.2.0-beta', '>=');
+    }
+}
diff --git a/src/Utils/Config.php b/src/Utils/Config.php
index 14ad932..1891df2 100644
--- a/src/Utils/Config.php
+++ b/src/Utils/Config.php
@@ -10,6 +10,7 @@
 use JTL\DB\DbInterface;
 use JTL\Plugin\PluginInterface;
 use JTL\Shop;
+use Plugin\s360_unzer_shop5\src\Orders\OrderMappingEntity;
 
 /**
  * Config Class
@@ -23,6 +24,8 @@ class Config
     public const PLUGIN_SESSION = 's360_heidelpay';
     public const HIP_URL = 'https://insights.unzer.com/merchant/{merchantId}/order/{id}';
     public const HIP_URL_SANDBOX = 'https://sbx-insights.unzer.com/merchant/{merchantId}/order/{id}';
+    public const PAYLATER_PORTAL_URL = 'https://merchant.payolution.com/';
+    public const PAYLATER_PORTAL_URL_SANDBOX = 'https://test-merchant.paylater.unzer.com/';
 
     // Lang Var Keys
     public const LANG_INVALID_TOKEN = 's360_hp_invalid_form_token';
@@ -38,6 +41,11 @@ class Config
     public const LANG_DOWNLOAD_YOUR_PLAN = 's360_hp_download_your_plan';
     public const LANG_CLOSE_MODAL = 's360_hp_close_modal';
     public const LANG_CONFIRMATION_CHECKSUM = 's360_hp_confirmation_checksum';
+    public const LANG_ERROR_VALIDATING_MERCHANT = 's360_hp_error_validating_merchant';
+    public const LANG_APPLE_PAY_NOT_SUPPORTED = 's360_hp_apple_pay_not_supported';
+    public const LANG_APPLE_PAY_CANCEL_BY_USER = 's360_hp_apple_pay_cancel_by_user';
+    public const LANG_CANCEL_PAYMENT_REFERENCE = 's360_hp_cancel_payment_reference';
+    public const LANG_INSTLAMENT_INFO = 's360_hp_instalment_info';
 
     // Config Keys
     public const PRIVATE_KEY = 'privateKey';
@@ -55,6 +63,55 @@ class Config
     public const PQ_METHOD_REVIEW_STEP = 'pqMethodReviewStep';
     public const PQ_SELECTOR_PAYMENT_INFORMATION = 'pqSelectorPaymentInformation';
     public const PQ_METHOD_PAYMENT_INFORMATION = 'pqMethodPaymentInformation';
+    public const ADD_INCOMING_PAYMENTS = 'addIncomingPayments';
+    public const PQ_METHOD_INSTALMENT_INFO = 'pqMethodInstalmentInfo';
+    public const PQ_SELECTOR_INSTALMENT_INFO = 'pqSelectorInstalmentInfo';
+
+    // Apple Pay Config Keys
+    public const APPLEPAY_MERCHANT_IDENTIFIER = 'applepay_merchant_identifier';
+    public const APPLEPAY_MERCHANT_DOMAIN = 'applepay_merchant_domain';
+    public const APPLEPAY_UNZER_PRIVATE_KEY_ID = 'applepay_unzer_private_key_id';
+    public const APPLEPAY_UNZER_CERTIFICATE_ID = 'applepay_unzer_certificate_id';
+
+    /**
+     * @var string Key for `ecckey.key` file content
+     */
+    public const APPLEPAY_PAYMENT_ECC_KEY = 'applepay_payment_ecc_key';
+
+    /**
+     * @var string Key for `ecccertreq.csr` file content
+     */
+    public const APPLEPAY_PAYMENT_CSR = 'applepay_payment_csr';
+
+    /**
+     * @var string Key for `apple_pay.pem` file content
+     */
+    public const APPLEPAY_PAYMENT_SIGNED_PEM = 'applepay_payment_signed_pem';
+
+    /**
+     * @var string Key for `privatekey.key` file content
+     */
+    public const APPLEPAY_PAYMENT_PRIVATE_KEY = 'applepay_payment_private_key';
+
+    /**
+     * @var string Key for `merchant_id.csr` file content
+     */
+    public const APPLEPAY_MERCHANT_CSR = 'applepay_merchant_csr';
+
+    /**
+     * @var string Key for `merchant_id.pem` file content
+     */
+    public const APPLEPAY_MERCHANT_SIGNED_PEM = 'applepay_merchant_signed_pem';
+
+    /**
+     * @var string Key for `encrypted_merchant_id.key` file content
+     */
+    public const APPLEPAY_MERCHANT_PRIVATE_KEY = 'applepay_merchant_private_key';
+
+    /**
+     * @var string Key for `merchant_id.key` file content
+     */
+    public const APPLEPAY_MERCHANT_NON_ENCRYPTED_PRIVATE_KEY = 'applepay_merchant_nonencrypted_private_key';
 
     /**
      * @var DbInterface
@@ -166,17 +223,21 @@ public function getPaymentSetting(string $key, string $moduleId): ?string
     /**
      * Get Insight Portal URL if merchant id is configured
      *
-     * @param string|null $uid
+     * @param OrderMappingEntity|null $orderMapping
      * @return string|null
      */
-    public function getInsightPortalUrl(?string $uid): ?string
+    public function getInsightPortalUrl(?OrderMappingEntity $orderMapping): ?string
     {
         $merchantId = $this->get(self::MERCHANT_ID);
 
-        if (!empty($merchantId) && !empty($uid)) {
+        if ($orderMapping->getPaymentTypeName() === 'paylater-invoice') {
+            return $this->isSandbox() ? self::PAYLATER_PORTAL_URL_SANDBOX : self::PAYLATER_PORTAL_URL;
+        }
+
+        if (!empty($merchantId) && !empty($orderMapping->getTransactionUniqueId())) {
             return str_replace(
                 ['{merchantId}', '{id}'],
-                [$merchantId, $uid],
+                [$merchantId, $orderMapping->getTransactionUniqueId()],
                 $this->isSandbox() ? self::HIP_URL_SANDBOX : self::HIP_URL
             );
         }
diff --git a/src/Utils/JtlLinkHelper.php b/src/Utils/JtlLinkHelper.php
index adc5678..e89581e 100644
--- a/src/Utils/JtlLinkHelper.php
+++ b/src/Utils/JtlLinkHelper.php
@@ -22,6 +22,8 @@ class JtlLinkHelper
      */
     public const ADMIN_TAB_SETTINGS = 'Einstellungen';
     public const ADMIN_TAB_ORDERS = 'Bestellungen';
+    public const ADMIN_TAB_APPLE_PAY = 'Apple Pay';
+    public const ADMIN_TAB_KEYPAIRS = 'Key Pairs';
 
     // Frontend Files
     public const FRONTEND_FILE_WEBHOOKS = 'webhook.php';
diff --git a/src/Utils/JtlLoggerTrait.php b/src/Utils/JtlLoggerTrait.php
index 3a79a5d..7caa5be 100644
--- a/src/Utils/JtlLoggerTrait.php
+++ b/src/Utils/JtlLoggerTrait.php
@@ -1,9 +1,8 @@
 <?php
-declare(strict_types = 1);
 
-namespace Plugin\s360_unzer_shop5\src\Utils;
+declare(strict_types=1);
 
-use JTL\Shop;
+namespace Plugin\s360_unzer_shop5\src\Utils;
 
 /**
  * JTL Logger Trait
@@ -57,23 +56,19 @@ public function errorLog($message, string $context = ''): void
      */
     private function writeLog($message, int $level, string $context = ''): void
     {
-        if ($context !== '') {
-            $context .= ': ';
-        }
-
         if (\is_array($message)) {
             foreach ($message as $msg) {
-                Shop::Container()->getLogService()->addRecord($level, '[Unzer] ' . $context . $msg);
+                Logger::log($context . ' ' . $msg, $level);
             }
 
             return;
         }
 
         if (\is_string($message)) {
-            Shop::Container()->getLogService()->addRecord($level, '[Unzer] ' . $context . $message);
+            Logger::log($context . ' '. $message, $level);
             return;
         }
 
-        Shop::Container()->getLogService()->addRecord($level, '[Unzer] ' . $context . print_r($message, true));
+        Logger::log($context . ' ' . print_r($message, true), $level);
     }
 }
diff --git a/src/Utils/Logger.php b/src/Utils/Logger.php
index fe21fd9..dffb03e 100644
--- a/src/Utils/Logger.php
+++ b/src/Utils/Logger.php
@@ -1,8 +1,11 @@
 <?php
-declare(strict_types = 1);
+
+declare(strict_types=1);
 
 namespace Plugin\s360_unzer_shop5\src\Utils;
 
+use JTL\Exceptions\CircularReferenceException;
+use JTL\Exceptions\ServiceNotFoundException;
 use JTL\Shop;
 
 /**
@@ -23,7 +26,7 @@ class Logger
      */
     public static function debug(string $message, array $context = []): void
     {
-        Shop::Container()->getLogService()->debug(self::LOG_PREFIX . $message, $context);
+        self::log($message, LOGLEVEL_DEBUG, $context);
     }
 
     /**
@@ -35,7 +38,7 @@ public static function debug(string $message, array $context = []): void
      */
     public static function notice(string $message, array $context = []): void
     {
-        Shop::Container()->getLogService()->notice(self::LOG_PREFIX . $message, $context);
+        self::log($message, LOGLEVEL_NOTICE, $context);
     }
 
     /**
@@ -47,6 +50,28 @@ public static function notice(string $message, array $context = []): void
      */
     public static function error(string $message, array $context = []): void
     {
-        Shop::Container()->getLogService()->error(self::LOG_PREFIX . $message, $context);
+        self::log($message, LOGLEVEL_ERROR, $context);
+    }
+
+    public static function log(string $message, int $level, array $context = []): void
+    {
+        try {
+            // fallback for shop versions < 5.3.0
+            $logger = Shop::Container()->getLogService();
+
+            if (Compatibility::isShopAtLeast53()) {
+                /** @var Logger $logger */
+                $logger = Shop::Container()->get(Config::PLUGIN_ID)->getLogger();
+            }
+
+            if ($logger->isHandling($level)) {
+                $logger->addRecord($level, self::LOG_PREFIX . $message, $context);
+            }
+        } catch (ServiceNotFoundException $ex) {
+            // Too bad, no logging service exists. We cannot log this - ignore it.
+        } catch (CircularReferenceException $ex) {
+            // This should not be possible, unless this trait is used within a Logging service.
+            // We cannot log this - ignore it.
+        }
     }
 }
diff --git a/src/Utils/SessionHelper.php b/src/Utils/SessionHelper.php
index 143e602..03a5c10 100644
--- a/src/Utils/SessionHelper.php
+++ b/src/Utils/SessionHelper.php
@@ -1,5 +1,6 @@
 <?php
-declare(strict_types = 1);
+
+declare(strict_types=1);
 
 namespace Plugin\s360_unzer_shop5\src\Utils;
 
@@ -19,18 +20,16 @@ class SessionHelper
 {
     use JtlLoggerTrait;
 
+    public const KEY_ORDER_ID = 'orderId';
     public const KEY_RESOURCE_ID = 'resourceId';
     public const KEY_CART_CHECKSUM = 'cartChecksum';
+    public const KEY_CART_CURRENCY = 'cartCurrency';
     public const KEY_CHECKOUT_SESSION = 'checkoutSession';
     public const KEY_CONFIRM_POST_ARRAY = 'confirmPostArray';
     public const KEY_SHORT_ID = 'shortId';
     public const KEY_PAYMENT_ID = 'paymentId';
     public const KEY_CUSTOMER_ID = 'customerId';
-
-    /**
-     * @var Frontend
-     */
-    private $session;
+    public const KEY_THREAT_METRIX_ID = 'threatMetrixId';
 
     /**
      * @var AlertServiceInterface
@@ -57,7 +56,6 @@ public function __construct()
             }
         }
 
-        $this->session = Frontend::getInstance();
         $this->alerts = Shop::Container()->getAlertService();
     }
 
@@ -91,7 +89,7 @@ public function getAlertService(): AlertServiceInterface
      */
     public function set(string $key, $value): void
     {
-        $this->session->set(
+        Frontend::getInstance()->set(
             $this->buildSessionKey([Config::PLUGIN_SESSION, $key]),
             $value
         );
@@ -106,7 +104,7 @@ public function set(string $key, $value): void
      */
     public function get(string $key, $default = null)
     {
-        return $this->session->get(
+        return Frontend::getInstance()->get(
             $this->buildSessionKey([Config::PLUGIN_SESSION, $key]),
             $default
         );
@@ -170,7 +168,7 @@ public function clear(?string $key = null): void
      */
     public function getFrontendSession(): Frontend
     {
-        return $this->session;
+        return Frontend::getInstance();
     }
 
     /**
@@ -264,4 +262,24 @@ public function redirectError(string $message, string $errorKey, string $url = n
 
         $this->alerts->addAlert(Alert::TYPE_ERROR, $message, $errorKey);
     }
+
+    /**
+     * Generate a new threat metrix id if there is not already one in the session.
+     *
+     * @return string
+     */
+    public function generateThreatMetrixId(): string
+    {
+        if ($this->get(SessionHelper::KEY_THREAT_METRIX_ID)) {
+            return $this->get(SessionHelper::KEY_THREAT_METRIX_ID);
+        }
+
+        $merchantId = pathinfo(Shop::getURL(), PATHINFO_FILENAME);
+        $merchantId = preg_replace('/[^a-z0-9_-]/i', '', $merchantId);
+
+        $id = $merchantId . '-' . bin2hex(openssl_random_pseudo_bytes(16));
+        $this->set(SessionHelper::KEY_THREAT_METRIX_ID, $id);
+
+        return $id;
+    }
 }
diff --git a/src/Webhooks/PaymentEventSubscriber.php b/src/Webhooks/PaymentEventSubscriber.php
index 4de6424..c3ef505 100644
--- a/src/Webhooks/PaymentEventSubscriber.php
+++ b/src/Webhooks/PaymentEventSubscriber.php
@@ -1,5 +1,6 @@
 <?php
-declare(strict_types = 1);
+
+declare(strict_types=1);
 
 namespace Plugin\s360_unzer_shop5\src\Webhooks;
 
@@ -23,20 +24,9 @@ class PaymentEventSubscriber extends EventSubscriber
 {
     use JtlLoggerTrait;
 
-    /**
-     * @var ChargeHandler
-     */
-    private $charges;
-
-    /**
-     * @var OrderMappingModel
-     */
-    private $model;
-
-    /**
-     * @var PaymentMethodModuleFactory
-     */
-    private $paymentMethodFactory;
+    private ChargeHandler $charges;
+    private OrderMappingModel $model;
+    private PaymentMethodModuleFactory $paymentMethodFactory;
 
     public function __construct()
     {
@@ -102,12 +92,14 @@ public function onHandleIncomingPayment(EventPayload $payload)
         }
 
         // Add incoming (successfull) payments
-        /** @var HeidelpayApiAdapter $api */
-        $api = Shop::Container()->get(HeidelpayApiAdapter::class);
+        /** @var HeidelpayApiAdapter $adapter */
+        $adapter = Shop::Container()->get(HeidelpayApiAdapter::class);
+        $api = $adapter->getConnectionForPublicKey($payload->getPublicKey());
+
         foreach ($payment->getCharges() as $charge) {
             // we need to fetch the charge because the charge in the payment object might not contain all information.
             // Especially the isError, isPending, isSuccess flags
-            $charge = $api->getApi()->fetchCharge($charge);
+            $charge = $api->fetchCharge($charge);
             $this->charges->addCharge($charge, $paymentMethod, $orderMapping->getOrder());
         }
 
diff --git a/vendor/autoload.php b/vendor/autoload.php
index 4050b16..80ce826 100644
--- a/vendor/autoload.php
+++ b/vendor/autoload.php
@@ -2,6 +2,11 @@
 
 // autoload.php @generated by Composer
 
+if (PHP_VERSION_ID < 50600) {
+    echo 'Composer 2.3.0 dropped support for autoloading on PHP <5.6 and you are running '.PHP_VERSION.', please upgrade PHP or use Composer 2.2 LTS via "composer self-update --2.2". Aborting.'.PHP_EOL;
+    exit(1);
+}
+
 require_once __DIR__ . '/composer/autoload_real.php';
 
 return ComposerAutoloaderInit798b3a25198002669f69117ca3c6edee::getLoader();
diff --git a/vendor/composer/ClassLoader.php b/vendor/composer/ClassLoader.php
index 6d0c3f2..afef3fa 100644
--- a/vendor/composer/ClassLoader.php
+++ b/vendor/composer/ClassLoader.php
@@ -42,30 +42,75 @@
  */
 class ClassLoader
 {
+    /** @var ?string */
     private $vendorDir;
 
     // PSR-4
+    /**
+     * @var array[]
+     * @psalm-var array<string, array<string, int>>
+     */
     private $prefixLengthsPsr4 = array();
+    /**
+     * @var array[]
+     * @psalm-var array<string, array<int, string>>
+     */
     private $prefixDirsPsr4 = array();
+    /**
+     * @var array[]
+     * @psalm-var array<string, string>
+     */
     private $fallbackDirsPsr4 = array();
 
     // PSR-0
+    /**
+     * @var array[]
+     * @psalm-var array<string, array<string, string[]>>
+     */
     private $prefixesPsr0 = array();
+    /**
+     * @var array[]
+     * @psalm-var array<string, string>
+     */
     private $fallbackDirsPsr0 = array();
 
+    /** @var bool */
     private $useIncludePath = false;
+
+    /**
+     * @var string[]
+     * @psalm-var array<string, string>
+     */
     private $classMap = array();
+
+    /** @var bool */
     private $classMapAuthoritative = false;
+
+    /**
+     * @var bool[]
+     * @psalm-var array<string, bool>
+     */
     private $missingClasses = array();
+
+    /** @var ?string */
     private $apcuPrefix;
 
+    /**
+     * @var self[]
+     */
     private static $registeredLoaders = array();
 
+    /**
+     * @param ?string $vendorDir
+     */
     public function __construct($vendorDir = null)
     {
         $this->vendorDir = $vendorDir;
     }
 
+    /**
+     * @return string[]
+     */
     public function getPrefixes()
     {
         if (!empty($this->prefixesPsr0)) {
@@ -75,28 +120,47 @@ public function getPrefixes()
         return array();
     }
 
+    /**
+     * @return array[]
+     * @psalm-return array<string, array<int, string>>
+     */
     public function getPrefixesPsr4()
     {
         return $this->prefixDirsPsr4;
     }
 
+    /**
+     * @return array[]
+     * @psalm-return array<string, string>
+     */
     public function getFallbackDirs()
     {
         return $this->fallbackDirsPsr0;
     }
 
+    /**
+     * @return array[]
+     * @psalm-return array<string, string>
+     */
     public function getFallbackDirsPsr4()
     {
         return $this->fallbackDirsPsr4;
     }
 
+    /**
+     * @return string[] Array of classname => path
+     * @psalm-return array<string, string>
+     */
     public function getClassMap()
     {
         return $this->classMap;
     }
 
     /**
-     * @param array $classMap Class to filename map
+     * @param string[] $classMap Class to filename map
+     * @psalm-param array<string, string> $classMap
+     *
+     * @return void
      */
     public function addClassMap(array $classMap)
     {
@@ -111,9 +175,11 @@ public function addClassMap(array $classMap)
      * Registers a set of PSR-0 directories for a given prefix, either
      * appending or prepending to the ones previously set for this prefix.
      *
-     * @param string       $prefix  The prefix
-     * @param array|string $paths   The PSR-0 root directories
-     * @param bool         $prepend Whether to prepend the directories
+     * @param string          $prefix  The prefix
+     * @param string[]|string $paths   The PSR-0 root directories
+     * @param bool            $prepend Whether to prepend the directories
+     *
+     * @return void
      */
     public function add($prefix, $paths, $prepend = false)
     {
@@ -156,11 +222,13 @@ public function add($prefix, $paths, $prepend = false)
      * Registers a set of PSR-4 directories for a given namespace, either
      * appending or prepending to the ones previously set for this namespace.
      *
-     * @param string       $prefix  The prefix/namespace, with trailing '\\'
-     * @param array|string $paths   The PSR-4 base directories
-     * @param bool         $prepend Whether to prepend the directories
+     * @param string          $prefix  The prefix/namespace, with trailing '\\'
+     * @param string[]|string $paths   The PSR-4 base directories
+     * @param bool            $prepend Whether to prepend the directories
      *
      * @throws \InvalidArgumentException
+     *
+     * @return void
      */
     public function addPsr4($prefix, $paths, $prepend = false)
     {
@@ -204,8 +272,10 @@ public function addPsr4($prefix, $paths, $prepend = false)
      * Registers a set of PSR-0 directories for a given prefix,
      * replacing any others previously set for this prefix.
      *
-     * @param string       $prefix The prefix
-     * @param array|string $paths  The PSR-0 base directories
+     * @param string          $prefix The prefix
+     * @param string[]|string $paths  The PSR-0 base directories
+     *
+     * @return void
      */
     public function set($prefix, $paths)
     {
@@ -220,10 +290,12 @@ public function set($prefix, $paths)
      * Registers a set of PSR-4 directories for a given namespace,
      * replacing any others previously set for this namespace.
      *
-     * @param string       $prefix The prefix/namespace, with trailing '\\'
-     * @param array|string $paths  The PSR-4 base directories
+     * @param string          $prefix The prefix/namespace, with trailing '\\'
+     * @param string[]|string $paths  The PSR-4 base directories
      *
      * @throws \InvalidArgumentException
+     *
+     * @return void
      */
     public function setPsr4($prefix, $paths)
     {
@@ -243,6 +315,8 @@ public function setPsr4($prefix, $paths)
      * Turns on searching the include path for class files.
      *
      * @param bool $useIncludePath
+     *
+     * @return void
      */
     public function setUseIncludePath($useIncludePath)
     {
@@ -265,6 +339,8 @@ public function getUseIncludePath()
      * that have not been registered with the class map.
      *
      * @param bool $classMapAuthoritative
+     *
+     * @return void
      */
     public function setClassMapAuthoritative($classMapAuthoritative)
     {
@@ -285,6 +361,8 @@ public function isClassMapAuthoritative()
      * APCu prefix to use to cache found/not-found classes, if the extension is enabled.
      *
      * @param string|null $apcuPrefix
+     *
+     * @return void
      */
     public function setApcuPrefix($apcuPrefix)
     {
@@ -305,6 +383,8 @@ public function getApcuPrefix()
      * Registers this instance as an autoloader.
      *
      * @param bool $prepend Whether to prepend the autoloader or not
+     *
+     * @return void
      */
     public function register($prepend = false)
     {
@@ -324,6 +404,8 @@ public function register($prepend = false)
 
     /**
      * Unregisters this instance as an autoloader.
+     *
+     * @return void
      */
     public function unregister()
     {
@@ -403,6 +485,11 @@ public static function getRegisteredLoaders()
         return self::$registeredLoaders;
     }
 
+    /**
+     * @param  string       $class
+     * @param  string       $ext
+     * @return string|false
+     */
     private function findFileWithExtension($class, $ext)
     {
         // PSR-4 lookup
@@ -474,6 +561,10 @@ private function findFileWithExtension($class, $ext)
  * Scope isolated include.
  *
  * Prevents access to $this/self from included files.
+ *
+ * @param  string $file
+ * @return void
+ * @private
  */
 function includeFile($file)
 {
diff --git a/vendor/composer/InstalledVersions.php b/vendor/composer/InstalledVersions.php
index b3a4e16..41bc143 100644
--- a/vendor/composer/InstalledVersions.php
+++ b/vendor/composer/InstalledVersions.php
@@ -20,12 +20,27 @@
  *
  * See also https://getcomposer.org/doc/07-runtime.md#installed-versions
  *
- * To require it's presence, you can require `composer-runtime-api ^2.0`
+ * To require its presence, you can require `composer-runtime-api ^2.0`
+ *
+ * @final
  */
 class InstalledVersions
 {
+    /**
+     * @var mixed[]|null
+     * @psalm-var array{root: array{name: string, version: string, reference: string, pretty_version: string, aliases: string[], dev: bool, install_path: string, type: string}, versions: array<string, array{dev_requirement: bool, pretty_version?: string, version?: string, aliases?: string[], reference?: string, replaced?: string[], provided?: string[], install_path?: string, type?: string}>}|array{}|null
+     */
     private static $installed;
+
+    /**
+     * @var bool|null
+     */
     private static $canGetVendors;
+
+    /**
+     * @var array[]
+     * @psalm-var array<string, array{root: array{name: string, version: string, reference: string, pretty_version: string, aliases: string[], dev: bool, install_path: string, type: string}, versions: array<string, array{dev_requirement: bool, pretty_version?: string, version?: string, aliases?: string[], reference?: string, replaced?: string[], provided?: string[], install_path?: string, type?: string}>}>
+     */
     private static $installedByVendor = array();
 
     /**
@@ -228,7 +243,7 @@ public static function getInstallPath($packageName)
 
     /**
      * @return array
-     * @psalm-return array{name: string, version: string, reference: string, pretty_version: string, aliases: string[], dev: bool, install_path: string}
+     * @psalm-return array{name: string, version: string, reference: string, pretty_version: string, aliases: string[], dev: bool, install_path: string, type: string}
      */
     public static function getRootPackage()
     {
@@ -242,7 +257,7 @@ public static function getRootPackage()
      *
      * @deprecated Use getAllRawData() instead which returns all datasets for all autoloaders present in the process. getRawData only returns the first dataset loaded, which may not be what you expect.
      * @return array[]
-     * @psalm-return array{root: array{name: string, version: string, reference: string, pretty_version: string, aliases: string[], dev: bool, install_path: string}, versions: array<string, array{dev_requirement: bool, pretty_version?: string, version?: string, aliases?: string[], reference?: string, replaced?: string[], provided?: string[], install_path?: string}>}
+     * @psalm-return array{root: array{name: string, version: string, reference: string, pretty_version: string, aliases: string[], dev: bool, install_path: string, type: string}, versions: array<string, array{dev_requirement: bool, pretty_version?: string, version?: string, aliases?: string[], reference?: string, replaced?: string[], provided?: string[], install_path?: string, type?: string}>}
      */
     public static function getRawData()
     {
@@ -265,7 +280,7 @@ public static function getRawData()
      * Returns the raw data of all installed.php which are currently loaded for custom implementations
      *
      * @return array[]
-     * @psalm-return list<array{root: array{name: string, version: string, reference: string, pretty_version: string, aliases: string[], dev: bool, install_path: string}, versions: array<string, array{dev_requirement: bool, pretty_version?: string, version?: string, aliases?: string[], reference?: string, replaced?: string[], provided?: string[], install_path?: string}>}>
+     * @psalm-return list<array{root: array{name: string, version: string, reference: string, pretty_version: string, aliases: string[], dev: bool, install_path: string, type: string}, versions: array<string, array{dev_requirement: bool, pretty_version?: string, version?: string, aliases?: string[], reference?: string, replaced?: string[], provided?: string[], install_path?: string, type?: string}>}>
      */
     public static function getAllRawData()
     {
@@ -288,7 +303,7 @@ public static function getAllRawData()
      * @param  array[] $data A vendor/composer/installed.php data set
      * @return void
      *
-     * @psalm-param array{root: array{name: string, version: string, reference: string, pretty_version: string, aliases: string[], dev: bool, install_path: string}, versions: array<string, array{dev_requirement: bool, pretty_version?: string, version?: string, aliases?: string[], reference?: string, replaced?: string[], provided?: string[], install_path?: string}>} $data
+     * @psalm-param array{root: array{name: string, version: string, reference: string, pretty_version: string, aliases: string[], dev: bool, install_path: string, type: string}, versions: array<string, array{dev_requirement: bool, pretty_version?: string, version?: string, aliases?: string[], reference?: string, replaced?: string[], provided?: string[], install_path?: string, type?: string}>} $data
      */
     public static function reload($data)
     {
@@ -298,7 +313,7 @@ public static function reload($data)
 
     /**
      * @return array[]
-     * @psalm-return list<array{root: array{name: string, version: string, reference: string, pretty_version: string, aliases: string[], dev: bool, install_path: string}, versions: array<string, array{dev_requirement: bool, pretty_version?: string, version?: string, aliases?: string[], reference?: string, replaced?: string[], provided?: string[], install_path?: string}>}>
+     * @psalm-return list<array{root: array{name: string, version: string, reference: string, pretty_version: string, aliases: string[], dev: bool, install_path: string, type: string}, versions: array<string, array{dev_requirement: bool, pretty_version?: string, version?: string, aliases?: string[], reference?: string, replaced?: string[], provided?: string[], install_path?: string, type?: string}>}>
      */
     private static function getInstalled()
     {
diff --git a/vendor/composer/autoload_classmap.php b/vendor/composer/autoload_classmap.php
index b26f1b1..0fb0a2c 100644
--- a/vendor/composer/autoload_classmap.php
+++ b/vendor/composer/autoload_classmap.php
@@ -2,7 +2,7 @@
 
 // autoload_classmap.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname($vendorDir);
 
 return array(
diff --git a/vendor/composer/autoload_files.php b/vendor/composer/autoload_files.php
new file mode 100644
index 0000000..eec29ec
--- /dev/null
+++ b/vendor/composer/autoload_files.php
@@ -0,0 +1,10 @@
+<?php
+
+// autoload_files.php @generated by Composer
+
+$vendorDir = dirname(__DIR__);
+$baseDir = dirname($vendorDir);
+
+return array(
+    'decc78cc4436b1292c6c0d151b19445c' => $vendorDir . '/phpseclib/phpseclib/phpseclib/bootstrap.php',
+);
diff --git a/vendor/composer/autoload_namespaces.php b/vendor/composer/autoload_namespaces.php
index b7fc012..15a2ff3 100644
--- a/vendor/composer/autoload_namespaces.php
+++ b/vendor/composer/autoload_namespaces.php
@@ -2,7 +2,7 @@
 
 // autoload_namespaces.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname($vendorDir);
 
 return array(
diff --git a/vendor/composer/autoload_psr4.php b/vendor/composer/autoload_psr4.php
index 5ba6953..649a98d 100644
--- a/vendor/composer/autoload_psr4.php
+++ b/vendor/composer/autoload_psr4.php
@@ -2,10 +2,12 @@
 
 // autoload_psr4.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname($vendorDir);
 
 return array(
+    'phpseclib3\\' => array($vendorDir . '/phpseclib/phpseclib/phpseclib'),
     'UnzerSDK\\examples\\' => array($vendorDir . '/unzerdev/php-sdk/examples'),
     'UnzerSDK\\' => array($vendorDir . '/unzerdev/php-sdk/src'),
+    'ParagonIE\\ConstantTime\\' => array($vendorDir . '/paragonie/constant_time_encoding/src'),
 );
diff --git a/vendor/composer/autoload_real.php b/vendor/composer/autoload_real.php
index b1f7e52..7453086 100644
--- a/vendor/composer/autoload_real.php
+++ b/vendor/composer/autoload_real.php
@@ -25,33 +25,33 @@ public static function getLoader()
         require __DIR__ . '/platform_check.php';
 
         spl_autoload_register(array('ComposerAutoloaderInit798b3a25198002669f69117ca3c6edee', 'loadClassLoader'), true, true);
-        self::$loader = $loader = new \Composer\Autoload\ClassLoader(\dirname(\dirname(__FILE__)));
+        self::$loader = $loader = new \Composer\Autoload\ClassLoader(\dirname(__DIR__));
         spl_autoload_unregister(array('ComposerAutoloaderInit798b3a25198002669f69117ca3c6edee', 'loadClassLoader'));
 
-        $useStaticLoader = PHP_VERSION_ID >= 50600 && !defined('HHVM_VERSION') && (!function_exists('zend_loader_file_encoded') || !zend_loader_file_encoded());
-        if ($useStaticLoader) {
-            require __DIR__ . '/autoload_static.php';
-
-            call_user_func(\Composer\Autoload\ComposerStaticInit798b3a25198002669f69117ca3c6edee::getInitializer($loader));
-        } else {
-            $map = require __DIR__ . '/autoload_namespaces.php';
-            foreach ($map as $namespace => $path) {
-                $loader->set($namespace, $path);
-            }
-
-            $map = require __DIR__ . '/autoload_psr4.php';
-            foreach ($map as $namespace => $path) {
-                $loader->setPsr4($namespace, $path);
-            }
-
-            $classMap = require __DIR__ . '/autoload_classmap.php';
-            if ($classMap) {
-                $loader->addClassMap($classMap);
-            }
-        }
+        require __DIR__ . '/autoload_static.php';
+        call_user_func(\Composer\Autoload\ComposerStaticInit798b3a25198002669f69117ca3c6edee::getInitializer($loader));
 
         $loader->register(true);
 
+        $includeFiles = \Composer\Autoload\ComposerStaticInit798b3a25198002669f69117ca3c6edee::$files;
+        foreach ($includeFiles as $fileIdentifier => $file) {
+            composerRequire798b3a25198002669f69117ca3c6edee($fileIdentifier, $file);
+        }
+
         return $loader;
     }
 }
+
+/**
+ * @param string $fileIdentifier
+ * @param string $file
+ * @return void
+ */
+function composerRequire798b3a25198002669f69117ca3c6edee($fileIdentifier, $file)
+{
+    if (empty($GLOBALS['__composer_autoload_files'][$fileIdentifier])) {
+        $GLOBALS['__composer_autoload_files'][$fileIdentifier] = true;
+
+        require $file;
+    }
+}
diff --git a/vendor/composer/autoload_static.php b/vendor/composer/autoload_static.php
index 70fb48a..fd07c63 100644
--- a/vendor/composer/autoload_static.php
+++ b/vendor/composer/autoload_static.php
@@ -6,15 +6,31 @@
 
 class ComposerStaticInit798b3a25198002669f69117ca3c6edee
 {
+    public static $files = array (
+        'decc78cc4436b1292c6c0d151b19445c' => __DIR__ . '/..' . '/phpseclib/phpseclib/phpseclib/bootstrap.php',
+    );
+
     public static $prefixLengthsPsr4 = array (
+        'p' => 
+        array (
+            'phpseclib3\\' => 11,
+        ),
         'U' => 
         array (
             'UnzerSDK\\examples\\' => 18,
             'UnzerSDK\\' => 9,
         ),
+        'P' => 
+        array (
+            'ParagonIE\\ConstantTime\\' => 23,
+        ),
     );
 
     public static $prefixDirsPsr4 = array (
+        'phpseclib3\\' => 
+        array (
+            0 => __DIR__ . '/..' . '/phpseclib/phpseclib/phpseclib',
+        ),
         'UnzerSDK\\examples\\' => 
         array (
             0 => __DIR__ . '/..' . '/unzerdev/php-sdk/examples',
@@ -23,6 +39,10 @@ class ComposerStaticInit798b3a25198002669f69117ca3c6edee
         array (
             0 => __DIR__ . '/..' . '/unzerdev/php-sdk/src',
         ),
+        'ParagonIE\\ConstantTime\\' => 
+        array (
+            0 => __DIR__ . '/..' . '/paragonie/constant_time_encoding/src',
+        ),
     );
 
     public static $classMap = array (
diff --git a/vendor/composer/installed.json b/vendor/composer/installed.json
index 54b55bc..ba79a9e 100644
--- a/vendor/composer/installed.json
+++ b/vendor/composer/installed.json
@@ -1,32 +1,268 @@
 {
     "packages": [
+        {
+            "name": "paragonie/constant_time_encoding",
+            "version": "v2.6.3",
+            "version_normalized": "2.6.3.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/paragonie/constant_time_encoding.git",
+                "reference": "58c3f47f650c94ec05a151692652a868995d2938"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/paragonie/constant_time_encoding/zipball/58c3f47f650c94ec05a151692652a868995d2938",
+                "reference": "58c3f47f650c94ec05a151692652a868995d2938",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7|^8"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^6|^7|^8|^9",
+                "vimeo/psalm": "^1|^2|^3|^4"
+            },
+            "time": "2022-06-14T06:56:20+00:00",
+            "type": "library",
+            "installation-source": "dist",
+            "autoload": {
+                "psr-4": {
+                    "ParagonIE\\ConstantTime\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Paragon Initiative Enterprises",
+                    "email": "security@paragonie.com",
+                    "homepage": "https://paragonie.com",
+                    "role": "Maintainer"
+                },
+                {
+                    "name": "Steve 'Sc00bz' Thomas",
+                    "email": "steve@tobtu.com",
+                    "homepage": "https://www.tobtu.com",
+                    "role": "Original Developer"
+                }
+            ],
+            "description": "Constant-time Implementations of RFC 4648 Encoding (Base-64, Base-32, Base-16)",
+            "keywords": [
+                "base16",
+                "base32",
+                "base32_decode",
+                "base32_encode",
+                "base64",
+                "base64_decode",
+                "base64_encode",
+                "bin2hex",
+                "encoding",
+                "hex",
+                "hex2bin",
+                "rfc4648"
+            ],
+            "support": {
+                "email": "info@paragonie.com",
+                "issues": "https://github.com/paragonie/constant_time_encoding/issues",
+                "source": "https://github.com/paragonie/constant_time_encoding"
+            },
+            "install-path": "../paragonie/constant_time_encoding"
+        },
+        {
+            "name": "paragonie/random_compat",
+            "version": "v9.99.100",
+            "version_normalized": "9.99.100.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/paragonie/random_compat.git",
+                "reference": "996434e5492cb4c3edcb9168db6fbb1359ef965a"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/paragonie/random_compat/zipball/996434e5492cb4c3edcb9168db6fbb1359ef965a",
+                "reference": "996434e5492cb4c3edcb9168db6fbb1359ef965a",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">= 7"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "4.*|5.*",
+                "vimeo/psalm": "^1"
+            },
+            "suggest": {
+                "ext-libsodium": "Provides a modern crypto API that can be used to generate random bytes."
+            },
+            "time": "2020-10-15T08:29:30+00:00",
+            "type": "library",
+            "installation-source": "dist",
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Paragon Initiative Enterprises",
+                    "email": "security@paragonie.com",
+                    "homepage": "https://paragonie.com"
+                }
+            ],
+            "description": "PHP 5.x polyfill for random_bytes() and random_int() from PHP 7",
+            "keywords": [
+                "csprng",
+                "polyfill",
+                "pseudorandom",
+                "random"
+            ],
+            "support": {
+                "email": "info@paragonie.com",
+                "issues": "https://github.com/paragonie/random_compat/issues",
+                "source": "https://github.com/paragonie/random_compat"
+            },
+            "install-path": "../paragonie/random_compat"
+        },
+        {
+            "name": "phpseclib/phpseclib",
+            "version": "3.0.37",
+            "version_normalized": "3.0.37.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/phpseclib/phpseclib.git",
+                "reference": "cfa2013d0f68c062055180dd4328cc8b9d1f30b8"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/phpseclib/phpseclib/zipball/cfa2013d0f68c062055180dd4328cc8b9d1f30b8",
+                "reference": "cfa2013d0f68c062055180dd4328cc8b9d1f30b8",
+                "shasum": ""
+            },
+            "require": {
+                "paragonie/constant_time_encoding": "^1|^2",
+                "paragonie/random_compat": "^1.4|^2.0|^9.99.99",
+                "php": ">=5.6.1"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "*"
+            },
+            "suggest": {
+                "ext-dom": "Install the DOM extension to load XML formatted public keys.",
+                "ext-gmp": "Install the GMP (GNU Multiple Precision) extension in order to speed up arbitrary precision integer arithmetic operations.",
+                "ext-libsodium": "SSH2/SFTP can make use of some algorithms provided by the libsodium-php extension.",
+                "ext-mcrypt": "Install the Mcrypt extension in order to speed up a few other cryptographic operations.",
+                "ext-openssl": "Install the OpenSSL extension in order to speed up a wide variety of cryptographic operations."
+            },
+            "time": "2024-03-03T02:14:58+00:00",
+            "type": "library",
+            "installation-source": "dist",
+            "autoload": {
+                "files": [
+                    "phpseclib/bootstrap.php"
+                ],
+                "psr-4": {
+                    "phpseclib3\\": "phpseclib/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Jim Wigginton",
+                    "email": "terrafrost@php.net",
+                    "role": "Lead Developer"
+                },
+                {
+                    "name": "Patrick Monnerat",
+                    "email": "pm@datasphere.ch",
+                    "role": "Developer"
+                },
+                {
+                    "name": "Andreas Fischer",
+                    "email": "bantu@phpbb.com",
+                    "role": "Developer"
+                },
+                {
+                    "name": "Hans-Jürgen Petrich",
+                    "email": "petrich@tronic-media.com",
+                    "role": "Developer"
+                },
+                {
+                    "name": "Graham Campbell",
+                    "email": "graham@alt-three.com",
+                    "role": "Developer"
+                }
+            ],
+            "description": "PHP Secure Communications Library - Pure-PHP implementations of RSA, AES, SSH2, SFTP, X.509 etc.",
+            "homepage": "http://phpseclib.sourceforge.net",
+            "keywords": [
+                "BigInteger",
+                "aes",
+                "asn.1",
+                "asn1",
+                "blowfish",
+                "crypto",
+                "cryptography",
+                "encryption",
+                "rsa",
+                "security",
+                "sftp",
+                "signature",
+                "signing",
+                "ssh",
+                "twofish",
+                "x.509",
+                "x509"
+            ],
+            "support": {
+                "issues": "https://github.com/phpseclib/phpseclib/issues",
+                "source": "https://github.com/phpseclib/phpseclib/tree/3.0.37"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/terrafrost",
+                    "type": "github"
+                },
+                {
+                    "url": "https://www.patreon.com/phpseclib",
+                    "type": "patreon"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/phpseclib/phpseclib",
+                    "type": "tidelift"
+                }
+            ],
+            "install-path": "../phpseclib/phpseclib"
+        },
         {
             "name": "unzerdev/php-sdk",
-            "version": "1.1.4.0",
-            "version_normalized": "1.1.4.0",
+            "version": "3.5.0",
+            "version_normalized": "3.5.0.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/unzerdev/php-sdk.git",
-                "reference": "e18bf5e598f1f6160d373904b4a4b79758033fd5"
+                "reference": "818cb1fb02ef65278221a95d82663ca11ec459e5"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/unzerdev/php-sdk/zipball/e18bf5e598f1f6160d373904b4a4b79758033fd5",
-                "reference": "e18bf5e598f1f6160d373904b4a4b79758033fd5",
+                "url": "https://api.github.com/repos/unzerdev/php-sdk/zipball/818cb1fb02ef65278221a95d82663ca11ec459e5",
+                "reference": "818cb1fb02ef65278221a95d82663ca11ec459e5",
                 "shasum": ""
             },
             "require": {
                 "ext-json": "*",
-                "php": "~7.1.0|~7.2.0|~7.3.0|~7.4.0|~8.0.0"
+                "php": "~7.4.0|~8.0.0|~8.1.0|~8.2.0|~8.3.0"
             },
             "require-dev": {
-                "friendsofphp/php-cs-fixer": "^2.0",
+                "friendsofphp/php-cs-fixer": "^3.0",
                 "phpunit/phpunit": ">6.5 <10.0"
             },
             "suggest": {
                 "ext-curl": "*"
             },
-            "time": "2021-08-31T09:58:12+00:00",
+            "time": "2024-02-08T11:12:26+00:00",
             "type": "library",
             "installation-source": "dist",
             "autoload": {
@@ -39,10 +275,10 @@
             "license": [
                 "Apache-2.0"
             ],
-            "description": "This is the php sdk to connect to the Unzer rest api.",
+            "description": "This is the php sdk to connect to the Unzer rest API.",
             "support": {
                 "email": "support@unzer.com",
-                "source": "https://github.com/unzerdev/php-sdk/tree/1.1.4.0"
+                "source": "https://github.com/unzerdev/php-sdk/tree/3.5.0"
             },
             "install-path": "../unzerdev/php-sdk"
         }
diff --git a/vendor/composer/installed.php b/vendor/composer/installed.php
index 7969377..dfa5509 100644
--- a/vendor/composer/installed.php
+++ b/vendor/composer/installed.php
@@ -5,27 +5,54 @@
         'type' => 'library',
         'install_path' => __DIR__ . '/../../',
         'aliases' => array(),
-        'reference' => '3281df9a970717def890de8a3d9c3353f7abeb17',
+        'reference' => '4e4adff2618f7fe8556a7a6c40978b1b87ea390e',
         'name' => 's360/s360_unzer_shop5',
         'dev' => true,
     ),
     'versions' => array(
+        'paragonie/constant_time_encoding' => array(
+            'pretty_version' => 'v2.6.3',
+            'version' => '2.6.3.0',
+            'type' => 'library',
+            'install_path' => __DIR__ . '/../paragonie/constant_time_encoding',
+            'aliases' => array(),
+            'reference' => '58c3f47f650c94ec05a151692652a868995d2938',
+            'dev_requirement' => false,
+        ),
+        'paragonie/random_compat' => array(
+            'pretty_version' => 'v9.99.100',
+            'version' => '9.99.100.0',
+            'type' => 'library',
+            'install_path' => __DIR__ . '/../paragonie/random_compat',
+            'aliases' => array(),
+            'reference' => '996434e5492cb4c3edcb9168db6fbb1359ef965a',
+            'dev_requirement' => false,
+        ),
+        'phpseclib/phpseclib' => array(
+            'pretty_version' => '3.0.37',
+            'version' => '3.0.37.0',
+            'type' => 'library',
+            'install_path' => __DIR__ . '/../phpseclib/phpseclib',
+            'aliases' => array(),
+            'reference' => 'cfa2013d0f68c062055180dd4328cc8b9d1f30b8',
+            'dev_requirement' => false,
+        ),
         's360/s360_unzer_shop5' => array(
             'pretty_version' => 'dev-master',
             'version' => 'dev-master',
             'type' => 'library',
             'install_path' => __DIR__ . '/../../',
             'aliases' => array(),
-            'reference' => '3281df9a970717def890de8a3d9c3353f7abeb17',
+            'reference' => '4e4adff2618f7fe8556a7a6c40978b1b87ea390e',
             'dev_requirement' => false,
         ),
         'unzerdev/php-sdk' => array(
-            'pretty_version' => '1.1.4.0',
-            'version' => '1.1.4.0',
+            'pretty_version' => '3.5.0',
+            'version' => '3.5.0.0',
             'type' => 'library',
             'install_path' => __DIR__ . '/../unzerdev/php-sdk',
             'aliases' => array(),
-            'reference' => 'e18bf5e598f1f6160d373904b4a4b79758033fd5',
+            'reference' => '818cb1fb02ef65278221a95d82663ca11ec459e5',
             'dev_requirement' => false,
         ),
     ),
diff --git a/vendor/composer/platform_check.php b/vendor/composer/platform_check.php
index 6d3407d..580fa96 100644
--- a/vendor/composer/platform_check.php
+++ b/vendor/composer/platform_check.php
@@ -4,8 +4,8 @@
 
 $issues = array();
 
-if (!(PHP_VERSION_ID >= 70100)) {
-    $issues[] = 'Your Composer dependencies require a PHP version ">= 7.1.0". You are running ' . PHP_VERSION . '.';
+if (!(PHP_VERSION_ID >= 70400)) {
+    $issues[] = 'Your Composer dependencies require a PHP version ">= 7.4.0". You are running ' . PHP_VERSION . '.';
 }
 
 if ($issues) {
diff --git a/vendor/paragonie/constant_time_encoding/LICENSE.txt b/vendor/paragonie/constant_time_encoding/LICENSE.txt
new file mode 100644
index 0000000..91acaca
--- /dev/null
+++ b/vendor/paragonie/constant_time_encoding/LICENSE.txt
@@ -0,0 +1,48 @@
+The MIT License (MIT)
+
+Copyright (c) 2016 - 2022 Paragon Initiative Enterprises
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+------------------------------------------------------------------------------
+This library was based on the work of Steve "Sc00bz" Thomas.
+------------------------------------------------------------------------------
+
+The MIT License (MIT)
+
+Copyright (c) 2014 Steve Thomas
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
diff --git a/vendor/paragonie/constant_time_encoding/README.md b/vendor/paragonie/constant_time_encoding/README.md
new file mode 100644
index 0000000..cedddd8
--- /dev/null
+++ b/vendor/paragonie/constant_time_encoding/README.md
@@ -0,0 +1,84 @@
+# Constant-Time Encoding
+
+[![Build Status](https://github.com/paragonie/constant_time_encoding/actions/workflows/ci.yml/badge.svg)](https://github.com/paragonie/constant_time_encoding/actions)
+[![Latest Stable Version](https://poser.pugx.org/paragonie/constant_time_encoding/v/stable)](https://packagist.org/packages/paragonie/constant_time_encoding)
+[![Latest Unstable Version](https://poser.pugx.org/paragonie/constant_time_encoding/v/unstable)](https://packagist.org/packages/paragonie/constant_time_encoding)
+[![License](https://poser.pugx.org/paragonie/constant_time_encoding/license)](https://packagist.org/packages/paragonie/constant_time_encoding)
+[![Downloads](https://img.shields.io/packagist/dt/paragonie/constant_time_encoding.svg)](https://packagist.org/packages/paragonie/constant_time_encoding)
+
+Based on the [constant-time base64 implementation made by Steve "Sc00bz" Thomas](https://github.com/Sc00bz/ConstTimeEncoding),
+this library aims to offer character encoding functions that do not leak
+information about what you are encoding/decoding via processor cache 
+misses. Further reading on [cache-timing attacks](http://blog.ircmaxell.com/2014/11/its-all-about-time.html).
+
+Our fork offers the following enchancements:
+
+* `mbstring.func_overload` resistance
+* Unit tests
+* Composer- and Packagist-ready
+* Base16 encoding
+* Base32 encoding
+* Uses `pack()` and `unpack()` instead of `chr()` and `ord()`
+
+## PHP Version Requirements
+
+Version 2 of this library should work on **PHP 7** or newer. For PHP 5
+support, see [the v1.x branch](https://github.com/paragonie/constant_time_encoding/tree/v1.x).
+
+If you are adding this as a dependency to a project intended to work on both PHP 5 and PHP 7, please set the required version to `^1|^2` instead of just `^1` or `^2`.
+
+## How to Install
+
+```sh
+composer require paragonie/constant_time_encoding
+```
+
+## How to Use
+
+```php
+use ParagonIE\ConstantTime\Encoding;
+
+// possibly (if applicable): 
+// require 'vendor/autoload.php';
+
+$data = random_bytes(32);
+echo Encoding::base64Encode($data), "\n";
+echo Encoding::base32EncodeUpper($data), "\n";
+echo Encoding::base32Encode($data), "\n";
+echo Encoding::hexEncode($data), "\n";
+echo Encoding::hexEncodeUpper($data), "\n";
+```
+
+Example output:
+ 
+```
+1VilPkeVqirlPifk5scbzcTTbMT2clp+Zkyv9VFFasE=
+2VMKKPSHSWVCVZJ6E7SONRY3ZXCNG3GE6ZZFU7TGJSX7KUKFNLAQ====
+2vmkkpshswvcvzj6e7sonry3zxcng3ge6zzfu7tgjsx7kukfnlaq====
+d558a53e4795aa2ae53e27e4e6c71bcdc4d36cc4f6725a7e664caff551456ac1
+D558A53E4795AA2AE53E27E4E6C71BDCC4D36CC4F6725A7E664CAFF551456AC1
+```
+
+If you only need a particular variant, you can just reference the 
+required class like so:
+
+```php
+use ParagonIE\ConstantTime\Base64;
+use ParagonIE\ConstantTime\Base32;
+
+$data = random_bytes(32);
+echo Base64::encode($data), "\n";
+echo Base32::encode($data), "\n";
+```
+
+Example output:
+
+```
+1VilPkeVqirlPifk5scbzcTTbMT2clp+Zkyv9VFFasE=
+2vmkkpshswvcvzj6e7sonry3zxcng3ge6zzfu7tgjsx7kukfnlaq====
+```
+
+## Support Contracts
+
+If your company uses this library in their products or services, you may be
+interested in [purchasing a support contract from Paragon Initiative Enterprises](https://paragonie.com/enterprise).
diff --git a/vendor/paragonie/constant_time_encoding/composer.json b/vendor/paragonie/constant_time_encoding/composer.json
new file mode 100644
index 0000000..2fe9717
--- /dev/null
+++ b/vendor/paragonie/constant_time_encoding/composer.json
@@ -0,0 +1,56 @@
+{
+  "name": "paragonie/constant_time_encoding",
+  "description": "Constant-time Implementations of RFC 4648 Encoding (Base-64, Base-32, Base-16)",
+  "keywords": [
+    "base64",
+    "encoding",
+    "rfc4648",
+    "base32",
+    "base16",
+    "hex",
+    "bin2hex",
+    "hex2bin",
+    "base64_encode",
+    "base64_decode",
+    "base32_encode",
+    "base32_decode"
+  ],
+  "license": "MIT",
+  "type": "library",
+  "authors": [
+      {
+        "name":     "Paragon Initiative Enterprises",
+        "email":    "security@paragonie.com",
+        "homepage": "https://paragonie.com",
+        "role":     "Maintainer"
+      },
+      {
+        "name":     "Steve 'Sc00bz' Thomas",
+        "email":    "steve@tobtu.com",
+        "homepage": "https://www.tobtu.com",
+        "role":     "Original Developer"
+      }
+  ],
+  "support": {
+    "issues":   "https://github.com/paragonie/constant_time_encoding/issues",
+    "email":    "info@paragonie.com",
+    "source":   "https://github.com/paragonie/constant_time_encoding"
+  },
+  "require": {
+    "php": "^7|^8"
+  },
+  "require-dev": {
+    "phpunit/phpunit": "^6|^7|^8|^9",
+    "vimeo/psalm": "^1|^2|^3|^4"
+  },
+  "autoload": {
+    "psr-4": {
+      "ParagonIE\\ConstantTime\\": "src/"
+    }
+  },
+  "autoload-dev": {
+    "psr-4": {
+      "ParagonIE\\ConstantTime\\Tests\\": "tests/"
+    }
+  }
+}
diff --git a/vendor/paragonie/constant_time_encoding/src/Base32.php b/vendor/paragonie/constant_time_encoding/src/Base32.php
new file mode 100644
index 0000000..7508b3d
--- /dev/null
+++ b/vendor/paragonie/constant_time_encoding/src/Base32.php
@@ -0,0 +1,519 @@
+<?php
+declare(strict_types=1);
+namespace ParagonIE\ConstantTime;
+
+use InvalidArgumentException;
+use RangeException;
+use TypeError;
+
+/**
+ *  Copyright (c) 2016 - 2022 Paragon Initiative Enterprises.
+ *  Copyright (c) 2014 Steve "Sc00bz" Thomas (steve at tobtu dot com)
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+/**
+ * Class Base32
+ * [A-Z][2-7]
+ *
+ * @package ParagonIE\ConstantTime
+ */
+abstract class Base32 implements EncoderInterface
+{
+    /**
+     * Decode a Base32-encoded string into raw binary
+     *
+     * @param string $encodedString
+     * @param bool $strictPadding
+     * @return string
+     */
+    public static function decode(string $encodedString, bool $strictPadding = false): string
+    {
+        return static::doDecode($encodedString, false, $strictPadding);
+    }
+
+    /**
+     * Decode an uppercase Base32-encoded string into raw binary
+     *
+     * @param string $src
+     * @param bool $strictPadding
+     * @return string
+     */
+    public static function decodeUpper(string $src, bool $strictPadding = false): string
+    {
+        return static::doDecode($src, true, $strictPadding);
+    }
+
+    /**
+     * Encode into Base32 (RFC 4648)
+     *
+     * @param string $binString
+     * @return string
+     * @throws TypeError
+     */
+    public static function encode(string $binString): string
+    {
+        return static::doEncode($binString, false, true);
+    }
+    /**
+     * Encode into Base32 (RFC 4648)
+     *
+     * @param string $src
+     * @return string
+     * @throws TypeError
+     */
+    public static function encodeUnpadded(string $src): string
+    {
+        return static::doEncode($src, false, false);
+    }
+
+    /**
+     * Encode into uppercase Base32 (RFC 4648)
+     *
+     * @param string $src
+     * @return string
+     * @throws TypeError
+     */
+    public static function encodeUpper(string $src): string
+    {
+        return static::doEncode($src, true, true);
+    }
+
+    /**
+     * Encode into uppercase Base32 (RFC 4648)
+     *
+     * @param string $src
+     * @return string
+     * @throws TypeError
+     */
+    public static function encodeUpperUnpadded(string $src): string
+    {
+        return static::doEncode($src, true, false);
+    }
+
+    /**
+     * Uses bitwise operators instead of table-lookups to turn 5-bit integers
+     * into 8-bit integers.
+     *
+     * @param int $src
+     * @return int
+     */
+    protected static function decode5Bits(int $src): int
+    {
+        $ret = -1;
+
+        // if ($src > 96 && $src < 123) $ret += $src - 97 + 1; // -64
+        $ret += (((0x60 - $src) & ($src - 0x7b)) >> 8) & ($src - 96);
+
+        // if ($src > 0x31 && $src < 0x38) $ret += $src - 24 + 1; // -23
+        $ret += (((0x31 - $src) & ($src - 0x38)) >> 8) & ($src - 23);
+
+        return $ret;
+    }
+
+    /**
+     * Uses bitwise operators instead of table-lookups to turn 5-bit integers
+     * into 8-bit integers.
+     *
+     * Uppercase variant.
+     *
+     * @param int $src
+     * @return int
+     */
+    protected static function decode5BitsUpper(int $src): int
+    {
+        $ret = -1;
+
+        // if ($src > 64 && $src < 91) $ret += $src - 65 + 1; // -64
+        $ret += (((0x40 - $src) & ($src - 0x5b)) >> 8) & ($src - 64);
+
+        // if ($src > 0x31 && $src < 0x38) $ret += $src - 24 + 1; // -23
+        $ret += (((0x31 - $src) & ($src - 0x38)) >> 8) & ($src - 23);
+
+        return $ret;
+    }
+
+    /**
+     * Uses bitwise operators instead of table-lookups to turn 8-bit integers
+     * into 5-bit integers.
+     *
+     * @param int $src
+     * @return string
+     */
+    protected static function encode5Bits(int $src): string
+    {
+        $diff = 0x61;
+
+        // if ($src > 25) $ret -= 72;
+        $diff -= ((25 - $src) >> 8) & 73;
+
+        return \pack('C', $src + $diff);
+    }
+
+    /**
+     * Uses bitwise operators instead of table-lookups to turn 8-bit integers
+     * into 5-bit integers.
+     *
+     * Uppercase variant.
+     *
+     * @param int $src
+     * @return string
+     */
+    protected static function encode5BitsUpper(int $src): string
+    {
+        $diff = 0x41;
+
+        // if ($src > 25) $ret -= 40;
+        $diff -= ((25 - $src) >> 8) & 41;
+
+        return \pack('C', $src + $diff);
+    }
+
+    /**
+     * @param string $encodedString
+     * @param bool $upper
+     * @return string
+     */
+    public static function decodeNoPadding(string $encodedString, bool $upper = false): string
+    {
+        $srcLen = Binary::safeStrlen($encodedString);
+        if ($srcLen === 0) {
+            return '';
+        }
+        if (($srcLen & 7) === 0) {
+            for ($j = 0; $j < 7 && $j < $srcLen; ++$j) {
+                if ($encodedString[$srcLen - $j - 1] === '=') {
+                    throw new InvalidArgumentException(
+                        "decodeNoPadding() doesn't tolerate padding"
+                    );
+                }
+            }
+        }
+        return static::doDecode(
+            $encodedString,
+            $upper,
+            true
+        );
+    }
+
+    /**
+     * Base32 decoding
+     *
+     * @param string $src
+     * @param bool $upper
+     * @param bool $strictPadding
+     * @return string
+     *
+     * @throws TypeError
+     * @psalm-suppress RedundantCondition
+     */
+    protected static function doDecode(
+        string $src,
+        bool $upper = false,
+        bool $strictPadding = false
+    ): string {
+        // We do this to reduce code duplication:
+        $method = $upper
+            ? 'decode5BitsUpper'
+            : 'decode5Bits';
+
+        // Remove padding
+        $srcLen = Binary::safeStrlen($src);
+        if ($srcLen === 0) {
+            return '';
+        }
+        if ($strictPadding) {
+            if (($srcLen & 7) === 0) {
+                for ($j = 0; $j < 7; ++$j) {
+                    if ($src[$srcLen - 1] === '=') {
+                        $srcLen--;
+                    } else {
+                        break;
+                    }
+                }
+            }
+            if (($srcLen & 7) === 1) {
+                throw new RangeException(
+                    'Incorrect padding'
+                );
+            }
+        } else {
+            $src = \rtrim($src, '=');
+            $srcLen = Binary::safeStrlen($src);
+        }
+
+        $err = 0;
+        $dest = '';
+        // Main loop (no padding):
+        for ($i = 0; $i + 8 <= $srcLen; $i += 8) {
+            /** @var array<int, int> $chunk */
+            $chunk = \unpack('C*', Binary::safeSubstr($src, $i, 8));
+            /** @var int $c0 */
+            $c0 = static::$method($chunk[1]);
+            /** @var int $c1 */
+            $c1 = static::$method($chunk[2]);
+            /** @var int $c2 */
+            $c2 = static::$method($chunk[3]);
+            /** @var int $c3 */
+            $c3 = static::$method($chunk[4]);
+            /** @var int $c4 */
+            $c4 = static::$method($chunk[5]);
+            /** @var int $c5 */
+            $c5 = static::$method($chunk[6]);
+            /** @var int $c6 */
+            $c6 = static::$method($chunk[7]);
+            /** @var int $c7 */
+            $c7 = static::$method($chunk[8]);
+
+            $dest .= \pack(
+                'CCCCC',
+                (($c0 << 3) | ($c1 >> 2)             ) & 0xff,
+                (($c1 << 6) | ($c2 << 1) | ($c3 >> 4)) & 0xff,
+                (($c3 << 4) | ($c4 >> 1)             ) & 0xff,
+                (($c4 << 7) | ($c5 << 2) | ($c6 >> 3)) & 0xff,
+                (($c6 << 5) | ($c7     )             ) & 0xff
+            );
+            $err |= ($c0 | $c1 | $c2 | $c3 | $c4 | $c5 | $c6 | $c7) >> 8;
+        }
+        // The last chunk, which may have padding:
+        if ($i < $srcLen) {
+            /** @var array<int, int> $chunk */
+            $chunk = \unpack('C*', Binary::safeSubstr($src, $i, $srcLen - $i));
+            /** @var int $c0 */
+            $c0 = static::$method($chunk[1]);
+
+            if ($i + 6 < $srcLen) {
+                /** @var int $c1 */
+                $c1 = static::$method($chunk[2]);
+                /** @var int $c2 */
+                $c2 = static::$method($chunk[3]);
+                /** @var int $c3 */
+                $c3 = static::$method($chunk[4]);
+                /** @var int $c4 */
+                $c4 = static::$method($chunk[5]);
+                /** @var int $c5 */
+                $c5 = static::$method($chunk[6]);
+                /** @var int $c6 */
+                $c6 = static::$method($chunk[7]);
+
+                $dest .= \pack(
+                    'CCCC',
+                    (($c0 << 3) | ($c1 >> 2)             ) & 0xff,
+                    (($c1 << 6) | ($c2 << 1) | ($c3 >> 4)) & 0xff,
+                    (($c3 << 4) | ($c4 >> 1)             ) & 0xff,
+                    (($c4 << 7) | ($c5 << 2) | ($c6 >> 3)) & 0xff
+                );
+                $err |= ($c0 | $c1 | $c2 | $c3 | $c4 | $c5 | $c6) >> 8;
+                if ($strictPadding) {
+                    $err |= ($c6 << 5) & 0xff;
+                }
+            } elseif ($i + 5 < $srcLen) {
+                /** @var int $c1 */
+                $c1 = static::$method($chunk[2]);
+                /** @var int $c2 */
+                $c2 = static::$method($chunk[3]);
+                /** @var int $c3 */
+                $c3 = static::$method($chunk[4]);
+                /** @var int $c4 */
+                $c4 = static::$method($chunk[5]);
+                /** @var int $c5 */
+                $c5 = static::$method($chunk[6]);
+
+                $dest .= \pack(
+                    'CCCC',
+                    (($c0 << 3) | ($c1 >> 2)             ) & 0xff,
+                    (($c1 << 6) | ($c2 << 1) | ($c3 >> 4)) & 0xff,
+                    (($c3 << 4) | ($c4 >> 1)             ) & 0xff,
+                    (($c4 << 7) | ($c5 << 2)             ) & 0xff
+                );
+                $err |= ($c0 | $c1 | $c2 | $c3 | $c4 | $c5) >> 8;
+            } elseif ($i + 4 < $srcLen) {
+                /** @var int $c1 */
+                $c1 = static::$method($chunk[2]);
+                /** @var int $c2 */
+                $c2 = static::$method($chunk[3]);
+                /** @var int $c3 */
+                $c3 = static::$method($chunk[4]);
+                /** @var int $c4 */
+                $c4 = static::$method($chunk[5]);
+
+                $dest .= \pack(
+                    'CCC',
+                    (($c0 << 3) | ($c1 >> 2)             ) & 0xff,
+                    (($c1 << 6) | ($c2 << 1) | ($c3 >> 4)) & 0xff,
+                    (($c3 << 4) | ($c4 >> 1)             ) & 0xff
+                );
+                $err |= ($c0 | $c1 | $c2 | $c3 | $c4) >> 8;
+                if ($strictPadding) {
+                    $err |= ($c4 << 7) & 0xff;
+                }
+            } elseif ($i + 3 < $srcLen) {
+                /** @var int $c1 */
+                $c1 = static::$method($chunk[2]);
+                /** @var int $c2 */
+                $c2 = static::$method($chunk[3]);
+                /** @var int $c3 */
+                $c3 = static::$method($chunk[4]);
+
+                $dest .= \pack(
+                    'CC',
+                    (($c0 << 3) | ($c1 >> 2)             ) & 0xff,
+                    (($c1 << 6) | ($c2 << 1) | ($c3 >> 4)) & 0xff
+                );
+                $err |= ($c0 | $c1 | $c2 | $c3) >> 8;
+                if ($strictPadding) {
+                    $err |= ($c3 << 4) & 0xff;
+                }
+            } elseif ($i + 2 < $srcLen) {
+                /** @var int $c1 */
+                $c1 = static::$method($chunk[2]);
+                /** @var int $c2 */
+                $c2 = static::$method($chunk[3]);
+
+                $dest .= \pack(
+                    'CC',
+                    (($c0 << 3) | ($c1 >> 2)             ) & 0xff,
+                    (($c1 << 6) | ($c2 << 1)             ) & 0xff
+                );
+                $err |= ($c0 | $c1 | $c2) >> 8;
+                if ($strictPadding) {
+                    $err |= ($c2 << 6) & 0xff;
+                }
+            } elseif ($i + 1 < $srcLen) {
+                /** @var int $c1 */
+                $c1 = static::$method($chunk[2]);
+
+                $dest .= \pack(
+                    'C',
+                    (($c0 << 3) | ($c1 >> 2)             ) & 0xff
+                );
+                $err |= ($c0 | $c1) >> 8;
+                if ($strictPadding) {
+                    $err |= ($c1 << 6) & 0xff;
+                }
+            } else {
+                $dest .= \pack(
+                    'C',
+                    (($c0 << 3)                          ) & 0xff
+                );
+                $err |= ($c0) >> 8;
+            }
+        }
+        $check = ($err === 0);
+        if (!$check) {
+            throw new RangeException(
+                'Base32::doDecode() only expects characters in the correct base32 alphabet'
+            );
+        }
+        return $dest;
+    }
+
+    /**
+     * Base32 Encoding
+     *
+     * @param string $src
+     * @param bool $upper
+     * @param bool $pad
+     * @return string
+     * @throws TypeError
+     */
+    protected static function doEncode(string $src, bool $upper = false, $pad = true): string
+    {
+        // We do this to reduce code duplication:
+        $method = $upper
+            ? 'encode5BitsUpper'
+            : 'encode5Bits';
+        
+        $dest = '';
+        $srcLen = Binary::safeStrlen($src);
+
+        // Main loop (no padding):
+        for ($i = 0; $i + 5 <= $srcLen; $i += 5) {
+            /** @var array<int, int> $chunk */
+            $chunk = \unpack('C*', Binary::safeSubstr($src, $i, 5));
+            $b0 = $chunk[1];
+            $b1 = $chunk[2];
+            $b2 = $chunk[3];
+            $b3 = $chunk[4];
+            $b4 = $chunk[5];
+            $dest .=
+                static::$method(              ($b0 >> 3)  & 31) .
+                static::$method((($b0 << 2) | ($b1 >> 6)) & 31) .
+                static::$method((($b1 >> 1)             ) & 31) .
+                static::$method((($b1 << 4) | ($b2 >> 4)) & 31) .
+                static::$method((($b2 << 1) | ($b3 >> 7)) & 31) .
+                static::$method((($b3 >> 2)             ) & 31) .
+                static::$method((($b3 << 3) | ($b4 >> 5)) & 31) .
+                static::$method(  $b4                     & 31);
+        }
+        // The last chunk, which may have padding:
+        if ($i < $srcLen) {
+            /** @var array<int, int> $chunk */
+            $chunk = \unpack('C*', Binary::safeSubstr($src, $i, $srcLen - $i));
+            $b0 = $chunk[1];
+            if ($i + 3 < $srcLen) {
+                $b1 = $chunk[2];
+                $b2 = $chunk[3];
+                $b3 = $chunk[4];
+                $dest .=
+                    static::$method(              ($b0 >> 3)  & 31) .
+                    static::$method((($b0 << 2) | ($b1 >> 6)) & 31) .
+                    static::$method((($b1 >> 1)             ) & 31) .
+                    static::$method((($b1 << 4) | ($b2 >> 4)) & 31) .
+                    static::$method((($b2 << 1) | ($b3 >> 7)) & 31) .
+                    static::$method((($b3 >> 2)             ) & 31) .
+                    static::$method((($b3 << 3)             ) & 31);
+                if ($pad) {
+                    $dest .= '=';
+                }
+            } elseif ($i + 2 < $srcLen) {
+                $b1 = $chunk[2];
+                $b2 = $chunk[3];
+                $dest .=
+                    static::$method(              ($b0 >> 3)  & 31) .
+                    static::$method((($b0 << 2) | ($b1 >> 6)) & 31) .
+                    static::$method((($b1 >> 1)             ) & 31) .
+                    static::$method((($b1 << 4) | ($b2 >> 4)) & 31) .
+                    static::$method((($b2 << 1)             ) & 31);
+                if ($pad) {
+                    $dest .= '===';
+                }
+            } elseif ($i + 1 < $srcLen) {
+                $b1 = $chunk[2];
+                $dest .=
+                    static::$method(              ($b0 >> 3)  & 31) .
+                    static::$method((($b0 << 2) | ($b1 >> 6)) & 31) .
+                    static::$method((($b1 >> 1)             ) & 31) .
+                    static::$method((($b1 << 4)             ) & 31);
+                if ($pad) {
+                    $dest .= '====';
+                }
+            } else {
+                $dest .=
+                    static::$method(              ($b0 >> 3)  & 31) .
+                    static::$method( ($b0 << 2)               & 31);
+                if ($pad) {
+                    $dest .= '======';
+                }
+            }
+        }
+        return $dest;
+    }
+}
diff --git a/vendor/paragonie/constant_time_encoding/src/Base32Hex.php b/vendor/paragonie/constant_time_encoding/src/Base32Hex.php
new file mode 100644
index 0000000..b868dd0
--- /dev/null
+++ b/vendor/paragonie/constant_time_encoding/src/Base32Hex.php
@@ -0,0 +1,111 @@
+<?php
+declare(strict_types=1);
+namespace ParagonIE\ConstantTime;
+
+/**
+ *  Copyright (c) 2016 - 2022 Paragon Initiative Enterprises.
+ *  Copyright (c) 2014 Steve "Sc00bz" Thomas (steve at tobtu dot com)
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+/**
+ * Class Base32Hex
+ * [0-9][A-V]
+ *
+ * @package ParagonIE\ConstantTime
+ */
+abstract class Base32Hex extends Base32
+{
+    /**
+     * Uses bitwise operators instead of table-lookups to turn 5-bit integers
+     * into 8-bit integers.
+     *
+     * @param int $src
+     * @return int
+     */
+    protected static function decode5Bits(int $src): int
+    {
+        $ret = -1;
+
+        // if ($src > 0x30 && $src < 0x3a) ret += $src - 0x2e + 1; // -47
+        $ret += (((0x2f - $src) & ($src - 0x3a)) >> 8) & ($src - 47);
+
+        // if ($src > 0x60 && $src < 0x77) ret += $src - 0x61 + 10 + 1; // -86
+        $ret += (((0x60 - $src) & ($src - 0x77)) >> 8) & ($src - 86);
+
+        return $ret;
+    }
+
+    /**
+     * Uses bitwise operators instead of table-lookups to turn 5-bit integers
+     * into 8-bit integers.
+     *
+     * @param int $src
+     * @return int
+     */
+    protected static function decode5BitsUpper(int $src): int
+    {
+        $ret = -1;
+
+        // if ($src > 0x30 && $src < 0x3a) ret += $src - 0x2e + 1; // -47
+        $ret += (((0x2f - $src) & ($src - 0x3a)) >> 8) & ($src - 47);
+
+        // if ($src > 0x40 && $src < 0x57) ret += $src - 0x41 + 10 + 1; // -54
+        $ret += (((0x40 - $src) & ($src - 0x57)) >> 8) & ($src - 54);
+
+        return $ret;
+    }
+
+    /**
+     * Uses bitwise operators instead of table-lookups to turn 8-bit integers
+     * into 5-bit integers.
+     *
+     * @param int $src
+     * @return string
+     */
+    protected static function encode5Bits(int $src): string
+    {
+        $src += 0x30;
+
+        // if ($src > 0x39) $src += 0x61 - 0x3a; // 39
+        $src += ((0x39 - $src) >> 8) & 39;
+
+        return \pack('C', $src);
+    }
+
+    /**
+     * Uses bitwise operators instead of table-lookups to turn 8-bit integers
+     * into 5-bit integers.
+     *
+     * Uppercase variant.
+     *
+     * @param int $src
+     * @return string
+     */
+    protected static function encode5BitsUpper(int $src): string
+    {
+        $src += 0x30;
+
+        // if ($src > 0x39) $src += 0x41 - 0x3a; // 7
+        $src += ((0x39 - $src) >> 8) & 7;
+
+        return \pack('C', $src);
+    }
+}
\ No newline at end of file
diff --git a/vendor/paragonie/constant_time_encoding/src/Base64.php b/vendor/paragonie/constant_time_encoding/src/Base64.php
new file mode 100644
index 0000000..f571617
--- /dev/null
+++ b/vendor/paragonie/constant_time_encoding/src/Base64.php
@@ -0,0 +1,314 @@
+<?php
+declare(strict_types=1);
+namespace ParagonIE\ConstantTime;
+
+use InvalidArgumentException;
+use RangeException;
+use TypeError;
+
+/**
+ *  Copyright (c) 2016 - 2022 Paragon Initiative Enterprises.
+ *  Copyright (c) 2014 Steve "Sc00bz" Thomas (steve at tobtu dot com)
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+/**
+ * Class Base64
+ * [A-Z][a-z][0-9]+/
+ *
+ * @package ParagonIE\ConstantTime
+ */
+abstract class Base64 implements EncoderInterface
+{
+    /**
+     * Encode into Base64
+     *
+     * Base64 character set "[A-Z][a-z][0-9]+/"
+     *
+     * @param string $binString
+     * @return string
+     *
+     * @throws TypeError
+     */
+    public static function encode(string $binString): string
+    {
+        return static::doEncode($binString, true);
+    }
+
+    /**
+     * Encode into Base64, no = padding
+     *
+     * Base64 character set "[A-Z][a-z][0-9]+/"
+     *
+     * @param string $src
+     * @return string
+     *
+     * @throws TypeError
+     */
+    public static function encodeUnpadded(string $src): string
+    {
+        return static::doEncode($src, false);
+    }
+
+    /**
+     * @param string $src
+     * @param bool $pad   Include = padding?
+     * @return string
+     *
+     * @throws TypeError
+     */
+    protected static function doEncode(string $src, bool $pad = true): string
+    {
+        $dest = '';
+        $srcLen = Binary::safeStrlen($src);
+        // Main loop (no padding):
+        for ($i = 0; $i + 3 <= $srcLen; $i += 3) {
+            /** @var array<int, int> $chunk */
+            $chunk = \unpack('C*', Binary::safeSubstr($src, $i, 3));
+            $b0 = $chunk[1];
+            $b1 = $chunk[2];
+            $b2 = $chunk[3];
+
+            $dest .=
+                static::encode6Bits(               $b0 >> 2       ) .
+                static::encode6Bits((($b0 << 4) | ($b1 >> 4)) & 63) .
+                static::encode6Bits((($b1 << 2) | ($b2 >> 6)) & 63) .
+                static::encode6Bits(  $b2                     & 63);
+        }
+        // The last chunk, which may have padding:
+        if ($i < $srcLen) {
+            /** @var array<int, int> $chunk */
+            $chunk = \unpack('C*', Binary::safeSubstr($src, $i, $srcLen - $i));
+            $b0 = $chunk[1];
+            if ($i + 1 < $srcLen) {
+                $b1 = $chunk[2];
+                $dest .=
+                    static::encode6Bits($b0 >> 2) .
+                    static::encode6Bits((($b0 << 4) | ($b1 >> 4)) & 63) .
+                    static::encode6Bits(($b1 << 2) & 63);
+                if ($pad) {
+                    $dest .= '=';
+                }
+            } else {
+                $dest .=
+                    static::encode6Bits( $b0 >> 2) .
+                    static::encode6Bits(($b0 << 4) & 63);
+                if ($pad) {
+                    $dest .= '==';
+                }
+            }
+        }
+        return $dest;
+    }
+
+    /**
+     * decode from base64 into binary
+     *
+     * Base64 character set "./[A-Z][a-z][0-9]"
+     *
+     * @param string $encodedString
+     * @param bool $strictPadding
+     * @return string
+     *
+     * @throws RangeException
+     * @throws TypeError
+     * @psalm-suppress RedundantCondition
+     */
+    public static function decode(string $encodedString, bool $strictPadding = false): string
+    {
+        // Remove padding
+        $srcLen = Binary::safeStrlen($encodedString);
+        if ($srcLen === 0) {
+            return '';
+        }
+
+        if ($strictPadding) {
+            if (($srcLen & 3) === 0) {
+                if ($encodedString[$srcLen - 1] === '=') {
+                    $srcLen--;
+                    if ($encodedString[$srcLen - 1] === '=') {
+                        $srcLen--;
+                    }
+                }
+            }
+            if (($srcLen & 3) === 1) {
+                throw new RangeException(
+                    'Incorrect padding'
+                );
+            }
+            if ($encodedString[$srcLen - 1] === '=') {
+                throw new RangeException(
+                    'Incorrect padding'
+                );
+            }
+        } else {
+            $encodedString = \rtrim($encodedString, '=');
+            $srcLen = Binary::safeStrlen($encodedString);
+        }
+
+        $err = 0;
+        $dest = '';
+        // Main loop (no padding):
+        for ($i = 0; $i + 4 <= $srcLen; $i += 4) {
+            /** @var array<int, int> $chunk */
+            $chunk = \unpack('C*', Binary::safeSubstr($encodedString, $i, 4));
+            $c0 = static::decode6Bits($chunk[1]);
+            $c1 = static::decode6Bits($chunk[2]);
+            $c2 = static::decode6Bits($chunk[3]);
+            $c3 = static::decode6Bits($chunk[4]);
+
+            $dest .= \pack(
+                'CCC',
+                ((($c0 << 2) | ($c1 >> 4)) & 0xff),
+                ((($c1 << 4) | ($c2 >> 2)) & 0xff),
+                ((($c2 << 6) |  $c3      ) & 0xff)
+            );
+            $err |= ($c0 | $c1 | $c2 | $c3) >> 8;
+        }
+        // The last chunk, which may have padding:
+        if ($i < $srcLen) {
+            /** @var array<int, int> $chunk */
+            $chunk = \unpack('C*', Binary::safeSubstr($encodedString, $i, $srcLen - $i));
+            $c0 = static::decode6Bits($chunk[1]);
+
+            if ($i + 2 < $srcLen) {
+                $c1 = static::decode6Bits($chunk[2]);
+                $c2 = static::decode6Bits($chunk[3]);
+                $dest .= \pack(
+                    'CC',
+                    ((($c0 << 2) | ($c1 >> 4)) & 0xff),
+                    ((($c1 << 4) | ($c2 >> 2)) & 0xff)
+                );
+                $err |= ($c0 | $c1 | $c2) >> 8;
+                if ($strictPadding) {
+                    $err |= ($c2 << 6) & 0xff;
+                }
+            } elseif ($i + 1 < $srcLen) {
+                $c1 = static::decode6Bits($chunk[2]);
+                $dest .= \pack(
+                    'C',
+                    ((($c0 << 2) | ($c1 >> 4)) & 0xff)
+                );
+                $err |= ($c0 | $c1) >> 8;
+                if ($strictPadding) {
+                    $err |= ($c1 << 4) & 0xff;
+                }
+            } elseif ($strictPadding) {
+                $err |= 1;
+            }
+        }
+        $check = ($err === 0);
+        if (!$check) {
+            throw new RangeException(
+                'Base64::decode() only expects characters in the correct base64 alphabet'
+            );
+        }
+        return $dest;
+    }
+
+    /**
+     * @param string $encodedString
+     * @return string
+     */
+    public static function decodeNoPadding(string $encodedString): string
+    {
+        $srcLen = Binary::safeStrlen($encodedString);
+        if ($srcLen === 0) {
+            return '';
+        }
+        if (($srcLen & 3) === 0) {
+            if ($encodedString[$srcLen - 1] === '=') {
+                throw new InvalidArgumentException(
+                    "decodeNoPadding() doesn't tolerate padding"
+                );
+            }
+            if (($srcLen & 3) > 1) {
+                if ($encodedString[$srcLen - 2] === '=') {
+                    throw new InvalidArgumentException(
+                        "decodeNoPadding() doesn't tolerate padding"
+                    );
+                }
+            }
+        }
+        return static::decode(
+            $encodedString,
+            true
+        );
+    }
+
+    /**
+     * Uses bitwise operators instead of table-lookups to turn 6-bit integers
+     * into 8-bit integers.
+     *
+     * Base64 character set:
+     * [A-Z]      [a-z]      [0-9]      +     /
+     * 0x41-0x5a, 0x61-0x7a, 0x30-0x39, 0x2b, 0x2f
+     *
+     * @param int $src
+     * @return int
+     */
+    protected static function decode6Bits(int $src): int
+    {
+        $ret = -1;
+
+        // if ($src > 0x40 && $src < 0x5b) $ret += $src - 0x41 + 1; // -64
+        $ret += (((0x40 - $src) & ($src - 0x5b)) >> 8) & ($src - 64);
+
+        // if ($src > 0x60 && $src < 0x7b) $ret += $src - 0x61 + 26 + 1; // -70
+        $ret += (((0x60 - $src) & ($src - 0x7b)) >> 8) & ($src - 70);
+
+        // if ($src > 0x2f && $src < 0x3a) $ret += $src - 0x30 + 52 + 1; // 5
+        $ret += (((0x2f - $src) & ($src - 0x3a)) >> 8) & ($src + 5);
+
+        // if ($src == 0x2b) $ret += 62 + 1;
+        $ret += (((0x2a - $src) & ($src - 0x2c)) >> 8) & 63;
+
+        // if ($src == 0x2f) ret += 63 + 1;
+        $ret += (((0x2e - $src) & ($src - 0x30)) >> 8) & 64;
+
+        return $ret;
+    }
+
+    /**
+     * Uses bitwise operators instead of table-lookups to turn 8-bit integers
+     * into 6-bit integers.
+     *
+     * @param int $src
+     * @return string
+     */
+    protected static function encode6Bits(int $src): string
+    {
+        $diff = 0x41;
+
+        // if ($src > 25) $diff += 0x61 - 0x41 - 26; // 6
+        $diff += ((25 - $src) >> 8) & 6;
+
+        // if ($src > 51) $diff += 0x30 - 0x61 - 26; // -75
+        $diff -= ((51 - $src) >> 8) & 75;
+
+        // if ($src > 61) $diff += 0x2b - 0x30 - 10; // -15
+        $diff -= ((61 - $src) >> 8) & 15;
+
+        // if ($src > 62) $diff += 0x2f - 0x2b - 1; // 3
+        $diff += ((62 - $src) >> 8) & 3;
+
+        return \pack('C', $src + $diff);
+    }
+}
diff --git a/vendor/paragonie/constant_time_encoding/src/Base64DotSlash.php b/vendor/paragonie/constant_time_encoding/src/Base64DotSlash.php
new file mode 100644
index 0000000..5e98a8f
--- /dev/null
+++ b/vendor/paragonie/constant_time_encoding/src/Base64DotSlash.php
@@ -0,0 +1,88 @@
+<?php
+declare(strict_types=1);
+namespace ParagonIE\ConstantTime;
+
+/**
+ *  Copyright (c) 2016 - 2022 Paragon Initiative Enterprises.
+ *  Copyright (c) 2014 Steve "Sc00bz" Thomas (steve at tobtu dot com)
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+/**
+ * Class Base64DotSlash
+ * ./[A-Z][a-z][0-9]
+ *
+ * @package ParagonIE\ConstantTime
+ */
+abstract class Base64DotSlash extends Base64
+{
+    /**
+     * Uses bitwise operators instead of table-lookups to turn 6-bit integers
+     * into 8-bit integers.
+     *
+     * Base64 character set:
+     * ./         [A-Z]      [a-z]     [0-9]
+     * 0x2e-0x2f, 0x41-0x5a, 0x61-0x7a, 0x30-0x39
+     *
+     * @param int $src
+     * @return int
+     */
+    protected static function decode6Bits(int $src): int
+    {
+        $ret = -1;
+
+        // if ($src > 0x2d && $src < 0x30) ret += $src - 0x2e + 1; // -45
+        $ret += (((0x2d - $src) & ($src - 0x30)) >> 8) & ($src - 45);
+
+        // if ($src > 0x40 && $src < 0x5b) ret += $src - 0x41 + 2 + 1; // -62
+        $ret += (((0x40 - $src) & ($src - 0x5b)) >> 8) & ($src - 62);
+
+        // if ($src > 0x60 && $src < 0x7b) ret += $src - 0x61 + 28 + 1; // -68
+        $ret += (((0x60 - $src) & ($src - 0x7b)) >> 8) & ($src - 68);
+
+        // if ($src > 0x2f && $src < 0x3a) ret += $src - 0x30 + 54 + 1; // 7
+        $ret += (((0x2f - $src) & ($src - 0x3a)) >> 8) & ($src + 7);
+
+        return $ret;
+    }
+
+    /**
+     * Uses bitwise operators instead of table-lookups to turn 8-bit integers
+     * into 6-bit integers.
+     *
+     * @param int $src
+     * @return string
+     */
+    protected static function encode6Bits(int $src): string
+    {
+        $src += 0x2e;
+
+        // if ($src > 0x2f) $src += 0x41 - 0x30; // 17
+        $src += ((0x2f - $src) >> 8) & 17;
+
+        // if ($src > 0x5a) $src += 0x61 - 0x5b; // 6
+        $src += ((0x5a - $src) >> 8) & 6;
+
+        // if ($src > 0x7a) $src += 0x30 - 0x7b; // -75
+        $src -= ((0x7a - $src) >> 8) & 75;
+
+        return \pack('C', $src);
+    }
+}
diff --git a/vendor/paragonie/constant_time_encoding/src/Base64DotSlashOrdered.php b/vendor/paragonie/constant_time_encoding/src/Base64DotSlashOrdered.php
new file mode 100644
index 0000000..9780b14
--- /dev/null
+++ b/vendor/paragonie/constant_time_encoding/src/Base64DotSlashOrdered.php
@@ -0,0 +1,82 @@
+<?php
+declare(strict_types=1);
+namespace ParagonIE\ConstantTime;
+
+/**
+ *  Copyright (c) 2016 - 2022 Paragon Initiative Enterprises.
+ *  Copyright (c) 2014 Steve "Sc00bz" Thomas (steve at tobtu dot com)
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+/**
+ * Class Base64DotSlashOrdered
+ * ./[0-9][A-Z][a-z]
+ *
+ * @package ParagonIE\ConstantTime
+ */
+abstract class Base64DotSlashOrdered extends Base64
+{
+    /**
+     * Uses bitwise operators instead of table-lookups to turn 6-bit integers
+     * into 8-bit integers.
+     *
+     * Base64 character set:
+     * [.-9]      [A-Z]      [a-z]
+     * 0x2e-0x39, 0x41-0x5a, 0x61-0x7a
+     *
+     * @param int $src
+     * @return int
+     */
+    protected static function decode6Bits(int $src): int
+    {
+        $ret = -1;
+
+        // if ($src > 0x2d && $src < 0x3a) ret += $src - 0x2e + 1; // -45
+        $ret += (((0x2d - $src) & ($src - 0x3a)) >> 8) & ($src - 45);
+
+        // if ($src > 0x40 && $src < 0x5b) ret += $src - 0x41 + 12 + 1; // -52
+        $ret += (((0x40 - $src) & ($src - 0x5b)) >> 8) & ($src - 52);
+
+        // if ($src > 0x60 && $src < 0x7b) ret += $src - 0x61 + 38 + 1; // -58
+        $ret += (((0x60 - $src) & ($src - 0x7b)) >> 8) & ($src - 58);
+
+        return $ret;
+    }
+
+    /**
+     * Uses bitwise operators instead of table-lookups to turn 8-bit integers
+     * into 6-bit integers.
+     *
+     * @param int $src
+     * @return string
+     */
+    protected static function encode6Bits(int $src): string
+    {
+        $src += 0x2e;
+
+        // if ($src > 0x39) $src += 0x41 - 0x3a; // 7
+        $src += ((0x39 - $src) >> 8) & 7;
+
+        // if ($src > 0x5a) $src += 0x61 - 0x5b; // 6
+        $src += ((0x5a - $src) >> 8) & 6;
+
+        return \pack('C', $src);
+    }
+}
diff --git a/vendor/paragonie/constant_time_encoding/src/Base64UrlSafe.php b/vendor/paragonie/constant_time_encoding/src/Base64UrlSafe.php
new file mode 100644
index 0000000..8192c63
--- /dev/null
+++ b/vendor/paragonie/constant_time_encoding/src/Base64UrlSafe.php
@@ -0,0 +1,95 @@
+<?php
+declare(strict_types=1);
+namespace ParagonIE\ConstantTime;
+
+/**
+ *  Copyright (c) 2016 - 2022 Paragon Initiative Enterprises.
+ *  Copyright (c) 2014 Steve "Sc00bz" Thomas (steve at tobtu dot com)
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+/**
+ * Class Base64UrlSafe
+ * [A-Z][a-z][0-9]\-_
+ *
+ * @package ParagonIE\ConstantTime
+ */
+abstract class Base64UrlSafe extends Base64
+{
+
+    /**
+     * Uses bitwise operators instead of table-lookups to turn 6-bit integers
+     * into 8-bit integers.
+     *
+     * Base64 character set:
+     * [A-Z]      [a-z]      [0-9]      -     _
+     * 0x41-0x5a, 0x61-0x7a, 0x30-0x39, 0x2d, 0x5f
+     *
+     * @param int $src
+     * @return int
+     */
+    protected static function decode6Bits(int $src): int
+    {
+        $ret = -1;
+
+        // if ($src > 0x40 && $src < 0x5b) $ret += $src - 0x41 + 1; // -64
+        $ret += (((0x40 - $src) & ($src - 0x5b)) >> 8) & ($src - 64);
+
+        // if ($src > 0x60 && $src < 0x7b) $ret += $src - 0x61 + 26 + 1; // -70
+        $ret += (((0x60 - $src) & ($src - 0x7b)) >> 8) & ($src - 70);
+
+        // if ($src > 0x2f && $src < 0x3a) $ret += $src - 0x30 + 52 + 1; // 5
+        $ret += (((0x2f - $src) & ($src - 0x3a)) >> 8) & ($src + 5);
+
+        // if ($src == 0x2c) $ret += 62 + 1;
+        $ret += (((0x2c - $src) & ($src - 0x2e)) >> 8) & 63;
+
+        // if ($src == 0x5f) ret += 63 + 1;
+        $ret += (((0x5e - $src) & ($src - 0x60)) >> 8) & 64;
+
+        return $ret;
+    }
+
+    /**
+     * Uses bitwise operators instead of table-lookups to turn 8-bit integers
+     * into 6-bit integers.
+     *
+     * @param int $src
+     * @return string
+     */
+    protected static function encode6Bits(int $src): string
+    {
+        $diff = 0x41;
+
+        // if ($src > 25) $diff += 0x61 - 0x41 - 26; // 6
+        $diff += ((25 - $src) >> 8) & 6;
+
+        // if ($src > 51) $diff += 0x30 - 0x61 - 26; // -75
+        $diff -= ((51 - $src) >> 8) & 75;
+
+        // if ($src > 61) $diff += 0x2d - 0x30 - 10; // -13
+        $diff -= ((61 - $src) >> 8) & 13;
+
+        // if ($src > 62) $diff += 0x5f - 0x2b - 1; // 3
+        $diff += ((62 - $src) >> 8) & 49;
+
+        return \pack('C', $src + $diff);
+    }
+}
diff --git a/vendor/paragonie/constant_time_encoding/src/Binary.php b/vendor/paragonie/constant_time_encoding/src/Binary.php
new file mode 100644
index 0000000..828f3e0
--- /dev/null
+++ b/vendor/paragonie/constant_time_encoding/src/Binary.php
@@ -0,0 +1,90 @@
+<?php
+declare(strict_types=1);
+namespace ParagonIE\ConstantTime;
+
+use TypeError;
+
+/**
+ *  Copyright (c) 2016 - 2022 Paragon Initiative Enterprises.
+ *  Copyright (c) 2014 Steve "Sc00bz" Thomas (steve at tobtu dot com)
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+/**
+ * Class Binary
+ *
+ * Binary string operators that don't choke on
+ * mbstring.func_overload
+ *
+ * @package ParagonIE\ConstantTime
+ */
+abstract class Binary
+{
+    /**
+     * Safe string length
+     *
+     * @ref mbstring.func_overload
+     *
+     * @param string $str
+     * @return int
+     */
+    public static function safeStrlen(string $str): int
+    {
+        if (\function_exists('mb_strlen')) {
+            // mb_strlen in PHP 7.x can return false.
+            /** @psalm-suppress RedundantCast */
+            return (int) \mb_strlen($str, '8bit');
+        } else {
+            return \strlen($str);
+        }
+    }
+
+    /**
+     * Safe substring
+     *
+     * @ref mbstring.func_overload
+     *
+     * @staticvar boolean $exists
+     * @param string $str
+     * @param int $start
+     * @param ?int $length
+     * @return string
+     *
+     * @throws TypeError
+     */
+    public static function safeSubstr(
+        string $str,
+        int $start = 0,
+        $length = null
+    ): string {
+        if ($length === 0) {
+            return '';
+        }
+        if (\function_exists('mb_substr')) {
+            return \mb_substr($str, $start, $length, '8bit');
+        }
+        // Unlike mb_substr(), substr() doesn't accept NULL for length
+        if ($length !== null) {
+            return \substr($str, $start, $length);
+        } else {
+            return \substr($str, $start);
+        }
+    }
+}
diff --git a/vendor/paragonie/constant_time_encoding/src/EncoderInterface.php b/vendor/paragonie/constant_time_encoding/src/EncoderInterface.php
new file mode 100644
index 0000000..9cafbf9
--- /dev/null
+++ b/vendor/paragonie/constant_time_encoding/src/EncoderInterface.php
@@ -0,0 +1,52 @@
+<?php
+declare(strict_types=1);
+namespace ParagonIE\ConstantTime;
+
+/**
+ *  Copyright (c) 2016 - 2022 Paragon Initiative Enterprises.
+ *  Copyright (c) 2014 Steve "Sc00bz" Thomas (steve at tobtu dot com)
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+/**
+ * Interface EncoderInterface
+ * @package ParagonIE\ConstantTime
+ */
+interface EncoderInterface
+{
+    /**
+     * Convert a binary string into a hexadecimal string without cache-timing
+     * leaks
+     *
+     * @param string $binString (raw binary)
+     * @return string
+     */
+    public static function encode(string $binString): string;
+
+    /**
+     * Convert a binary string into a hexadecimal string without cache-timing
+     * leaks
+     *
+     * @param string $encodedString
+     * @param bool $strictPadding Error on invalid padding
+     * @return string (raw binary)
+     */
+    public static function decode(string $encodedString, bool $strictPadding = false): string;
+}
diff --git a/vendor/paragonie/constant_time_encoding/src/Encoding.php b/vendor/paragonie/constant_time_encoding/src/Encoding.php
new file mode 100644
index 0000000..8649f31
--- /dev/null
+++ b/vendor/paragonie/constant_time_encoding/src/Encoding.php
@@ -0,0 +1,262 @@
+<?php
+declare(strict_types=1);
+namespace ParagonIE\ConstantTime;
+
+use TypeError;
+
+/**
+ *  Copyright (c) 2016 - 2022 Paragon Initiative Enterprises.
+ *  Copyright (c) 2014 Steve "Sc00bz" Thomas (steve at tobtu dot com)
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+/**
+ * Class Encoding
+ * @package ParagonIE\ConstantTime
+ */
+abstract class Encoding
+{
+    /**
+     * RFC 4648 Base32 encoding
+     *
+     * @param string $str
+     * @return string
+     * @throws TypeError
+     */
+    public static function base32Encode(string $str): string
+    {
+        return Base32::encode($str);
+    }
+
+    /**
+     * RFC 4648 Base32 encoding
+     *
+     * @param string $str
+     * @return string
+     * @throws TypeError
+     */
+    public static function base32EncodeUpper(string $str): string
+    {
+        return Base32::encodeUpper($str);
+    }
+
+    /**
+     * RFC 4648 Base32 decoding
+     *
+     * @param string $str
+     * @return string
+     * @throws TypeError
+     */
+    public static function base32Decode(string $str): string
+    {
+        return Base32::decode($str);
+    }
+
+    /**
+     * RFC 4648 Base32 decoding
+     *
+     * @param string $str
+     * @return string
+     * @throws TypeError
+     */
+    public static function base32DecodeUpper(string $str): string
+    {
+        return Base32::decodeUpper($str);
+    }
+
+    /**
+     * RFC 4648 Base32 encoding
+     *
+     * @param string $str
+     * @return string
+     * @throws TypeError
+     */
+    public static function base32HexEncode(string $str): string
+    {
+        return Base32Hex::encode($str);
+    }
+
+    /**
+     * RFC 4648 Base32Hex encoding
+     *
+     * @param string $str
+     * @return string
+     * @throws TypeError
+     */
+    public static function base32HexEncodeUpper(string $str): string
+    {
+        return Base32Hex::encodeUpper($str);
+    }
+
+    /**
+     * RFC 4648 Base32Hex decoding
+     *
+     * @param string $str
+     * @return string
+     * @throws TypeError
+     */
+    public static function base32HexDecode(string $str): string
+    {
+        return Base32Hex::decode($str);
+    }
+
+    /**
+     * RFC 4648 Base32Hex decoding
+     *
+     * @param string $str
+     * @return string
+     * @throws TypeError
+     */
+    public static function base32HexDecodeUpper(string $str): string
+    {
+        return Base32Hex::decodeUpper($str);
+    }
+
+    /**
+     * RFC 4648 Base64 encoding
+     *
+     * @param string $str
+     * @return string
+     * @throws TypeError
+     */
+    public static function base64Encode(string $str): string
+    {
+        return Base64::encode($str);
+    }
+
+    /**
+     * RFC 4648 Base64 decoding
+     *
+     * @param string $str
+     * @return string
+     * @throws TypeError
+     */
+    public static function base64Decode(string $str): string
+    {
+        return Base64::decode($str);
+    }
+
+    /**
+     * Encode into Base64
+     *
+     * Base64 character set "./[A-Z][a-z][0-9]"
+     * @param string $str
+     * @return string
+     * @throws TypeError
+     */
+    public static function base64EncodeDotSlash(string $str): string
+    {
+        return Base64DotSlash::encode($str);
+    }
+
+    /**
+     * Decode from base64 to raw binary
+     *
+     * Base64 character set "./[A-Z][a-z][0-9]"
+     *
+     * @param string $str
+     * @return string
+     * @throws \RangeException
+     * @throws TypeError
+     */
+    public static function base64DecodeDotSlash(string $str): string
+    {
+        return Base64DotSlash::decode($str);
+    }
+
+    /**
+     * Encode into Base64
+     *
+     * Base64 character set "[.-9][A-Z][a-z]" or "./[0-9][A-Z][a-z]"
+     * @param string $str
+     * @return string
+     * @throws TypeError
+     */
+    public static function base64EncodeDotSlashOrdered(string $str): string
+    {
+        return Base64DotSlashOrdered::encode($str);
+    }
+
+    /**
+     * Decode from base64 to raw binary
+     *
+     * Base64 character set "[.-9][A-Z][a-z]" or "./[0-9][A-Z][a-z]"
+     *
+     * @param string $str
+     * @return string
+     * @throws \RangeException
+     * @throws TypeError
+     */
+    public static function base64DecodeDotSlashOrdered(string $str): string
+    {
+        return Base64DotSlashOrdered::decode($str);
+    }
+
+    /**
+     * Convert a binary string into a hexadecimal string without cache-timing
+     * leaks
+     *
+     * @param string $bin_string (raw binary)
+     * @return string
+     * @throws TypeError
+     */
+    public static function hexEncode(string $bin_string): string
+    {
+        return Hex::encode($bin_string);
+    }
+
+    /**
+     * Convert a hexadecimal string into a binary string without cache-timing
+     * leaks
+     *
+     * @param string $hex_string
+     * @return string (raw binary)
+     * @throws \RangeException
+     */
+    public static function hexDecode(string $hex_string): string
+    {
+        return Hex::decode($hex_string);
+    }
+
+    /**
+     * Convert a binary string into a hexadecimal string without cache-timing
+     * leaks
+     *
+     * @param string $bin_string (raw binary)
+     * @return string
+     * @throws TypeError
+     */
+    public static function hexEncodeUpper(string $bin_string): string
+    {
+        return Hex::encodeUpper($bin_string);
+    }
+
+    /**
+     * Convert a binary string into a hexadecimal string without cache-timing
+     * leaks
+     *
+     * @param string $bin_string (raw binary)
+     * @return string
+     */
+    public static function hexDecodeUpper(string $bin_string): string
+    {
+        return Hex::decode($bin_string);
+    }
+}
diff --git a/vendor/paragonie/constant_time_encoding/src/Hex.php b/vendor/paragonie/constant_time_encoding/src/Hex.php
new file mode 100644
index 0000000..a9e058c
--- /dev/null
+++ b/vendor/paragonie/constant_time_encoding/src/Hex.php
@@ -0,0 +1,146 @@
+<?php
+declare(strict_types=1);
+namespace ParagonIE\ConstantTime;
+
+use RangeException;
+use TypeError;
+
+/**
+ *  Copyright (c) 2016 - 2022 Paragon Initiative Enterprises.
+ *  Copyright (c) 2014 Steve "Sc00bz" Thomas (steve at tobtu dot com)
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+/**
+ * Class Hex
+ * @package ParagonIE\ConstantTime
+ */
+abstract class Hex implements EncoderInterface
+{
+    /**
+     * Convert a binary string into a hexadecimal string without cache-timing
+     * leaks
+     *
+     * @param string $binString (raw binary)
+     * @return string
+     * @throws TypeError
+     */
+    public static function encode(string $binString): string
+    {
+        $hex = '';
+        $len = Binary::safeStrlen($binString);
+        for ($i = 0; $i < $len; ++$i) {
+            /** @var array<int, int> $chunk */
+            $chunk = \unpack('C', $binString[$i]);
+            $c = $chunk[1] & 0xf;
+            $b = $chunk[1] >> 4;
+
+            $hex .= \pack(
+                'CC',
+                (87 + $b + ((($b - 10) >> 8) & ~38)),
+                (87 + $c + ((($c - 10) >> 8) & ~38))
+            );
+        }
+        return $hex;
+    }
+
+    /**
+     * Convert a binary string into a hexadecimal string without cache-timing
+     * leaks, returning uppercase letters (as per RFC 4648)
+     *
+     * @param string $binString (raw binary)
+     * @return string
+     * @throws TypeError
+     */
+    public static function encodeUpper(string $binString): string
+    {
+        $hex = '';
+        $len = Binary::safeStrlen($binString);
+
+        for ($i = 0; $i < $len; ++$i) {
+            /** @var array<int, int> $chunk */
+            $chunk = \unpack('C', $binString[$i]);
+            $c = $chunk[1] & 0xf;
+            $b = $chunk[1] >> 4;
+
+            $hex .= \pack(
+                'CC',
+                (55 + $b + ((($b - 10) >> 8) & ~6)),
+                (55 + $c + ((($c - 10) >> 8) & ~6))
+            );
+        }
+        return $hex;
+    }
+
+    /**
+     * Convert a hexadecimal string into a binary string without cache-timing
+     * leaks
+     *
+     * @param string $encodedString
+     * @param bool $strictPadding
+     * @return string (raw binary)
+     * @throws RangeException
+     */
+    public static function decode(
+        string $encodedString,
+        bool $strictPadding = false
+    ): string {
+        $hex_pos = 0;
+        $bin = '';
+        $c_acc = 0;
+        $hex_len = Binary::safeStrlen($encodedString);
+        $state = 0;
+        if (($hex_len & 1) !== 0) {
+            if ($strictPadding) {
+                throw new RangeException(
+                    'Expected an even number of hexadecimal characters'
+                );
+            } else {
+                $encodedString = '0' . $encodedString;
+                ++$hex_len;
+            }
+        }
+
+        /** @var array<int, int> $chunk */
+        $chunk = \unpack('C*', $encodedString);
+        while ($hex_pos < $hex_len) {
+            ++$hex_pos;
+            $c = $chunk[$hex_pos];
+            $c_num = $c ^ 48;
+            $c_num0 = ($c_num - 10) >> 8;
+            $c_alpha = ($c & ~32) - 55;
+            $c_alpha0 = (($c_alpha - 10) ^ ($c_alpha - 16)) >> 8;
+
+            if (($c_num0 | $c_alpha0) === 0) {
+                throw new RangeException(
+                    'Expected hexadecimal character'
+                );
+            }
+            $c_val = ($c_num0 & $c_num) | ($c_alpha & $c_alpha0);
+            if ($state === 0) {
+                $c_acc = $c_val * 16;
+            } else {
+                $bin .= \pack('C', $c_acc | $c_val);
+            }
+            $state ^= 1;
+        }
+        return $bin;
+    }
+}
diff --git a/vendor/paragonie/constant_time_encoding/src/RFC4648.php b/vendor/paragonie/constant_time_encoding/src/RFC4648.php
new file mode 100644
index 0000000..f124d65
--- /dev/null
+++ b/vendor/paragonie/constant_time_encoding/src/RFC4648.php
@@ -0,0 +1,186 @@
+<?php
+declare(strict_types=1);
+namespace ParagonIE\ConstantTime;
+
+use TypeError;
+
+/**
+ *  Copyright (c) 2016 - 2022 Paragon Initiative Enterprises.
+ *  Copyright (c) 2014 Steve "Sc00bz" Thomas (steve at tobtu dot com)
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+/**
+ * Class RFC4648
+ *
+ * This class conforms strictly to the RFC
+ *
+ * @package ParagonIE\ConstantTime
+ */
+abstract class RFC4648
+{
+    /**
+     * RFC 4648 Base64 encoding
+     *
+     * "foo" -> "Zm9v"
+     *
+     * @param string $str
+     * @return string
+     *
+     * @throws TypeError
+     */
+    public static function base64Encode(string $str): string
+    {
+        return Base64::encode($str);
+    }
+
+    /**
+     * RFC 4648 Base64 decoding
+     *
+     * "Zm9v" -> "foo"
+     *
+     * @param string $str
+     * @return string
+     *
+     * @throws TypeError
+     */
+    public static function base64Decode(string $str): string
+    {
+        return Base64::decode($str, true);
+    }
+
+    /**
+     * RFC 4648 Base64 (URL Safe) encoding
+     *
+     * "foo" -> "Zm9v"
+     *
+     * @param string $str
+     * @return string
+     *
+     * @throws TypeError
+     */
+    public static function base64UrlSafeEncode(string $str): string
+    {
+        return Base64UrlSafe::encode($str);
+    }
+
+    /**
+     * RFC 4648 Base64 (URL Safe) decoding
+     *
+     * "Zm9v" -> "foo"
+     *
+     * @param string $str
+     * @return string
+     *
+     * @throws TypeError
+     */
+    public static function base64UrlSafeDecode(string $str): string
+    {
+        return Base64UrlSafe::decode($str, true);
+    }
+
+    /**
+     * RFC 4648 Base32 encoding
+     *
+     * "foo" -> "MZXW6==="
+     *
+     * @param string $str
+     * @return string
+     *
+     * @throws TypeError
+     */
+    public static function base32Encode(string $str): string
+    {
+        return Base32::encodeUpper($str);
+    }
+
+    /**
+     * RFC 4648 Base32 encoding
+     *
+     * "MZXW6===" -> "foo"
+     *
+     * @param string $str
+     * @return string
+     *
+     * @throws TypeError
+     */
+    public static function base32Decode(string $str): string
+    {
+        return Base32::decodeUpper($str, true);
+    }
+
+    /**
+     * RFC 4648 Base32-Hex encoding
+     *
+     * "foo" -> "CPNMU==="
+     *
+     * @param string $str
+     * @return string
+     *
+     * @throws TypeError
+     */
+    public static function base32HexEncode(string $str): string
+    {
+        return Base32::encodeUpper($str);
+    }
+
+    /**
+     * RFC 4648 Base32-Hex decoding
+     *
+     * "CPNMU===" -> "foo"
+     *
+     * @param string $str
+     * @return string
+     *
+     * @throws TypeError
+     */
+    public static function base32HexDecode(string $str): string
+    {
+        return Base32::decodeUpper($str, true);
+    }
+
+    /**
+     * RFC 4648 Base16 decoding
+     *
+     * "foo" -> "666F6F"
+     *
+     * @param string $str
+     * @return string
+     *
+     * @throws TypeError
+     */
+    public static function base16Encode(string $str): string
+    {
+        return Hex::encodeUpper($str);
+    }
+
+    /**
+     * RFC 4648 Base16 decoding
+     *
+     * "666F6F" -> "foo"
+     *
+     * @param string $str
+     * @return string
+     */
+    public static function base16Decode(string $str): string
+    {
+        return Hex::decode($str, true);
+    }
+}
\ No newline at end of file
diff --git a/vendor/paragonie/random_compat/LICENSE b/vendor/paragonie/random_compat/LICENSE
new file mode 100644
index 0000000..45c7017
--- /dev/null
+++ b/vendor/paragonie/random_compat/LICENSE
@@ -0,0 +1,22 @@
+The MIT License (MIT)
+
+Copyright (c) 2015 Paragon Initiative Enterprises
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
diff --git a/vendor/paragonie/random_compat/build-phar.sh b/vendor/paragonie/random_compat/build-phar.sh
new file mode 100644
index 0000000..b4a5ba3
--- /dev/null
+++ b/vendor/paragonie/random_compat/build-phar.sh
@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+
+basedir=$( dirname $( readlink -f ${BASH_SOURCE[0]} ) )
+
+php -dphar.readonly=0 "$basedir/other/build_phar.php" $*
\ No newline at end of file
diff --git a/vendor/paragonie/random_compat/composer.json b/vendor/paragonie/random_compat/composer.json
new file mode 100644
index 0000000..f2b9c4e
--- /dev/null
+++ b/vendor/paragonie/random_compat/composer.json
@@ -0,0 +1,34 @@
+{
+  "name":         "paragonie/random_compat",
+  "description":  "PHP 5.x polyfill for random_bytes() and random_int() from PHP 7",
+  "keywords": [
+    "csprng",
+    "random",
+    "polyfill",
+    "pseudorandom"
+  ],
+  "license":      "MIT",
+  "type":         "library",
+  "authors": [
+    {
+      "name":     "Paragon Initiative Enterprises",
+      "email":    "security@paragonie.com",
+      "homepage": "https://paragonie.com"
+    }
+  ],
+  "support": {
+    "issues":     "https://github.com/paragonie/random_compat/issues",
+    "email":      "info@paragonie.com",
+    "source":     "https://github.com/paragonie/random_compat"
+  },
+  "require": {
+    "php": ">= 7"
+  },
+  "require-dev": {
+    "vimeo/psalm": "^1",
+    "phpunit/phpunit": "4.*|5.*"
+  },
+  "suggest": {
+    "ext-libsodium": "Provides a modern crypto API that can be used to generate random bytes."
+  }
+}
diff --git a/vendor/paragonie/random_compat/dist/random_compat.phar.pubkey b/vendor/paragonie/random_compat/dist/random_compat.phar.pubkey
new file mode 100644
index 0000000..eb50ebf
--- /dev/null
+++ b/vendor/paragonie/random_compat/dist/random_compat.phar.pubkey
@@ -0,0 +1,5 @@
+-----BEGIN PUBLIC KEY-----
+MHYwEAYHKoZIzj0CAQYFK4EEACIDYgAEEd+wCqJDrx5B4OldM0dQE0ZMX+lx1ZWm
+pui0SUqD4G29L3NGsz9UhJ/0HjBdbnkhIK5xviT0X5vtjacF6ajgcCArbTB+ds+p
++h7Q084NuSuIpNb6YPfoUFgC/CL9kAoc
+-----END PUBLIC KEY-----
diff --git a/vendor/paragonie/random_compat/dist/random_compat.phar.pubkey.asc b/vendor/paragonie/random_compat/dist/random_compat.phar.pubkey.asc
new file mode 100644
index 0000000..6a1d7f3
--- /dev/null
+++ b/vendor/paragonie/random_compat/dist/random_compat.phar.pubkey.asc
@@ -0,0 +1,11 @@
+-----BEGIN PGP SIGNATURE-----
+Version: GnuPG v2.0.22 (MingW32)
+
+iQEcBAABAgAGBQJWtW1hAAoJEGuXocKCZATaJf0H+wbZGgskK1dcRTsuVJl9IWip
+QwGw/qIKI280SD6/ckoUMxKDCJiFuPR14zmqnS36k7N5UNPnpdTJTS8T11jttSpg
+1LCmgpbEIpgaTah+cELDqFCav99fS+bEiAL5lWDAHBTE/XPjGVCqeehyPYref4IW
+NDBIEsvnHPHPLsn6X5jq4+Yj5oUixgxaMPiR+bcO4Sh+RzOVB6i2D0upWfRXBFXA
+NNnsg9/zjvoC7ZW73y9uSH+dPJTt/Vgfeiv52/v41XliyzbUyLalf02GNPY+9goV
+JHG1ulEEBJOCiUD9cE1PUIJwHA/HqyhHIvV350YoEFiHl8iSwm7SiZu5kPjaq74=
+=B6+8
+-----END PGP SIGNATURE-----
diff --git a/vendor/paragonie/random_compat/lib/random.php b/vendor/paragonie/random_compat/lib/random.php
new file mode 100644
index 0000000..c7731a5
--- /dev/null
+++ b/vendor/paragonie/random_compat/lib/random.php
@@ -0,0 +1,32 @@
+<?php
+/**
+ * Random_* Compatibility Library
+ * for using the new PHP 7 random_* API in PHP 5 projects
+ *
+ * @version 2.99.99
+ * @released 2018-06-06
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2015 - 2018 Paragon Initiative Enterprises
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+// NOP
diff --git a/vendor/paragonie/random_compat/other/build_phar.php b/vendor/paragonie/random_compat/other/build_phar.php
new file mode 100644
index 0000000..70ef4b2
--- /dev/null
+++ b/vendor/paragonie/random_compat/other/build_phar.php
@@ -0,0 +1,57 @@
+<?php
+$dist = dirname(__DIR__).'/dist';
+if (!is_dir($dist)) {
+    mkdir($dist, 0755);
+}
+if (file_exists($dist.'/random_compat.phar')) {
+    unlink($dist.'/random_compat.phar');
+}
+$phar = new Phar(
+    $dist.'/random_compat.phar',
+    FilesystemIterator::CURRENT_AS_FILEINFO | \FilesystemIterator::KEY_AS_FILENAME,
+    'random_compat.phar'
+);
+rename(
+    dirname(__DIR__).'/lib/random.php', 
+    dirname(__DIR__).'/lib/index.php'
+);
+$phar->buildFromDirectory(dirname(__DIR__).'/lib');
+rename(
+    dirname(__DIR__).'/lib/index.php', 
+    dirname(__DIR__).'/lib/random.php'
+);
+
+/**
+ * If we pass an (optional) path to a private key as a second argument, we will
+ * sign the Phar with OpenSSL.
+ * 
+ * If you leave this out, it will produce an unsigned .phar!
+ */
+if ($argc > 1) {
+    if (!@is_readable($argv[1])) {
+        echo 'Could not read the private key file:', $argv[1], "\n";
+        exit(255);
+    }
+    $pkeyFile = file_get_contents($argv[1]);
+    
+    $private = openssl_get_privatekey($pkeyFile);
+    if ($private !== false) {
+        $pkey = '';
+        openssl_pkey_export($private, $pkey);
+        $phar->setSignatureAlgorithm(Phar::OPENSSL, $pkey);
+        
+        /**
+         * Save the corresponding public key to the file
+         */
+        if (!@is_readable($dist.'/random_compat.phar.pubkey')) {
+            $details = openssl_pkey_get_details($private);
+            file_put_contents(
+                $dist.'/random_compat.phar.pubkey',
+                $details['key']
+            );
+        }
+    } else {
+        echo 'An error occurred reading the private key from OpenSSL.', "\n";
+        exit(255);
+    }
+}
diff --git a/vendor/paragonie/random_compat/psalm-autoload.php b/vendor/paragonie/random_compat/psalm-autoload.php
new file mode 100644
index 0000000..d71d1b8
--- /dev/null
+++ b/vendor/paragonie/random_compat/psalm-autoload.php
@@ -0,0 +1,9 @@
+<?php
+
+require_once 'lib/byte_safe_strings.php';
+require_once 'lib/cast_to_int.php';
+require_once 'lib/error_polyfill.php';
+require_once 'other/ide_stubs/libsodium.php';
+require_once 'lib/random.php';
+
+$int = random_int(0, 65536);
diff --git a/vendor/paragonie/random_compat/psalm.xml b/vendor/paragonie/random_compat/psalm.xml
new file mode 100644
index 0000000..596d99d
--- /dev/null
+++ b/vendor/paragonie/random_compat/psalm.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0"?>
+<psalm
+    autoloader="psalm-autoload.php"
+    stopOnFirstError="false"
+    useDocblockTypes="true"
+>
+    <projectFiles>
+        <directory name="lib" />
+    </projectFiles>
+    <issueHandlers>
+        <RedundantConditionGivenDocblockType errorLevel="info" />
+        <UnresolvableInclude errorLevel="info" />
+        <DuplicateClass errorLevel="info" />
+        <InvalidOperand errorLevel="info" />
+        <UndefinedConstant errorLevel="info" />
+        <MissingReturnType errorLevel="info" />
+        <InvalidReturnType errorLevel="info" />
+    </issueHandlers>
+</psalm>
diff --git a/vendor/phpseclib/phpseclib/AUTHORS b/vendor/phpseclib/phpseclib/AUTHORS
new file mode 100644
index 0000000..9f10d26
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/AUTHORS
@@ -0,0 +1,7 @@
+phpseclib Lead Developer:  TerraFrost (Jim Wigginton)
+
+phpseclib Developers:      monnerat (Patrick Monnerat)
+                           bantu (Andreas Fischer)
+                           petrich (Hans-Jürgen Petrich)
+                           GrahamCampbell (Graham Campbell)
+                           hc-jworman
\ No newline at end of file
diff --git a/vendor/phpseclib/phpseclib/BACKERS.md b/vendor/phpseclib/phpseclib/BACKERS.md
new file mode 100644
index 0000000..efca482
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/BACKERS.md
@@ -0,0 +1,17 @@
+# Backers
+
+phpseclib ongoing development is made possible by [Tidelift](https://tidelift.com/subscription/pkg/packagist-phpseclib-phpseclib?utm_source=packagist-phpseclib-phpseclib&utm_medium=referral&utm_campaign=readme) and by contributions by users like you. Thank you.
+
+## Backers
+
+- Allan Simon
+- [ChargeOver](https://chargeover.com/)
+- Raghu Veer Dendukuri
+- Zane Hooper
+- [Setasign](https://www.setasign.com/)
+- [Charles Severance](https://github.com/csev)
+- [Rachel Fish](https://github.com/itsrachelfish)
+- Tharyrok
+- [cjhaas](https://github.com/cjhaas)
+- [istiak-tridip](https://github.com/istiak-tridip)
+- [Anna Filina](https://github.com/afilina)
\ No newline at end of file
diff --git a/vendor/phpseclib/phpseclib/LICENSE b/vendor/phpseclib/phpseclib/LICENSE
new file mode 100644
index 0000000..e7214eb
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/LICENSE
@@ -0,0 +1,20 @@
+Copyright (c) 2011-2019 TerraFrost and other contributors
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
\ No newline at end of file
diff --git a/vendor/phpseclib/phpseclib/README.md b/vendor/phpseclib/phpseclib/README.md
new file mode 100644
index 0000000..37cbcb9
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/README.md
@@ -0,0 +1,97 @@
+# phpseclib - PHP Secure Communications Library
+
+[![CI Status](https://github.com/phpseclib/phpseclib/actions/workflows/ci.yml/badge.svg?branch=3.0&event=push "CI Status")](https://github.com/phpseclib/phpseclib)
+
+## Supporting phpseclib
+
+- [Become a backer or sponsor on Patreon](https://www.patreon.com/phpseclib)
+- [One-time donation via PayPal or crypto-currencies](http://sourceforge.net/donate/index.php?group_id=198487)
+- [Subscribe to Tidelift](https://tidelift.com/subscription/pkg/packagist-phpseclib-phpseclib?utm_source=packagist-phpseclib-phpseclib&utm_medium=referral&utm_campaign=readme)
+
+## Introduction
+
+MIT-licensed pure-PHP implementations of the following:
+
+SSH-2, SFTP, X.509, an arbitrary-precision integer arithmetic library, Ed25519 / Ed449 / Curve25519 / Curve449, ECDSA / ECDH (with support for 66 curves), RSA (PKCS#1 v2.2 compliant), DSA / DH, DES / 3DES / RC4 / Rijndael / AES / Blowfish / Twofish / Salsa20 / ChaCha20, GCM / Poly1305
+
+* [Browse Git](https://github.com/phpseclib/phpseclib)
+
+## Documentation
+
+* [Documentation / Manual](https://phpseclib.com/)
+* [API Documentation](https://api.phpseclib.com/3.0/) (generated by Doctum)
+
+## Branches
+
+### master
+
+* Development Branch
+* Unstable API
+* Do not use in production
+
+### 3.0
+
+* Long term support (LTS) release
+* Major expansion of cryptographic primitives
+* Minimum PHP version: 5.6.1
+* PSR-4 autoloading with namespace rooted at `\phpseclib3`
+* Install via Composer: `composer require phpseclib/phpseclib:~3.0`
+
+### 2.0
+
+* Long term support (LTS) release
+* Modernized version of 1.0
+* Minimum PHP version: 5.3.3
+* PSR-4 autoloading with namespace rooted at `\phpseclib`
+* Install via Composer: `composer require phpseclib/phpseclib:~2.0`
+
+### 1.0
+
+* Long term support (LTS) release
+* PHP4 compatible
+* Composer compatible (PSR-0 autoloading)
+* Install using Composer: `composer require phpseclib/phpseclib:~1.0`
+* [Download 1.0.23 as ZIP](http://sourceforge.net/projects/phpseclib/files/phpseclib1.0.23.zip/download)
+
+## Security contact information
+
+To report a security vulnerability, please use the [Tidelift security contact](https://tidelift.com/security). Tidelift will coordinate the fix and disclosure.
+
+## Support
+
+Need Support?
+
+* [Checkout Questions and Answers on Stack Overflow](http://stackoverflow.com/questions/tagged/phpseclib)
+* [Create a Support Ticket on GitHub](https://github.com/phpseclib/phpseclib/issues/new)
+* [Browse the Support Forum](http://www.frostjedi.com/phpbb/viewforum.php?f=46) (no longer in use)
+
+## Special Thanks
+
+Special Thanks to our $50+ sponsors!:
+
+- Allan Simon
+- [ChargeOver](https://chargeover.com/)
+
+## Contributing
+
+1. Fork the Project
+
+2. Ensure you have Composer installed (see [Composer Download Instructions](https://getcomposer.org/download/))
+
+3. Install Development Dependencies
+    ```sh
+    composer install
+    ```
+
+4. Create a Feature Branch
+
+5. Run continuous integration checks:
+   ```sh
+   composer global require php:^8.1 squizlabs/php_codesniffer friendsofphp/php-cs-fixer vimeo/psalm
+   phpcs --standard=build/php_codesniffer.xml
+   php-cs-fixer fix --config=build/php-cs-fixer.php --diff --dry-run --using-cache=no
+   psalm --config=build/psalm.xml --no-cache --long-progress --report-show-info=false --output-format=text
+   vendor/bin/phpunit --verbose --configuration tests/phpunit.xml
+   ```
+   
+6. Send us a Pull Request
diff --git a/vendor/phpseclib/phpseclib/composer.json b/vendor/phpseclib/phpseclib/composer.json
new file mode 100644
index 0000000..5052d5f
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/composer.json
@@ -0,0 +1,84 @@
+{
+    "name": "phpseclib/phpseclib",
+    "type": "library",
+    "description": "PHP Secure Communications Library - Pure-PHP implementations of RSA, AES, SSH2, SFTP, X.509 etc.",
+    "keywords": [
+        "security",
+        "crypto",
+        "cryptography",
+        "encryption",
+        "signature",
+        "signing",
+        "rsa",
+        "aes",
+        "blowfish",
+        "twofish",
+        "ssh",
+        "sftp",
+        "x509",
+        "x.509",
+        "asn1",
+        "asn.1",
+        "BigInteger"
+        ],
+    "homepage": "http://phpseclib.sourceforge.net",
+    "license": "MIT",
+    "authors": [
+        {
+            "name": "Jim Wigginton",
+            "email": "terrafrost@php.net",
+            "role": "Lead Developer"
+        },
+        {
+            "name": "Patrick Monnerat",
+            "email": "pm@datasphere.ch",
+            "role": "Developer"
+        },
+        {
+            "name": "Andreas Fischer",
+            "email": "bantu@phpbb.com",
+            "role": "Developer"
+        },
+        {
+            "name": "Hans-Jürgen Petrich",
+            "email": "petrich@tronic-media.com",
+            "role": "Developer"
+        },
+        {
+            "name": "Graham Campbell",
+            "email": "graham@alt-three.com",
+            "role": "Developer"
+        }
+    ],
+    "require": {
+        "php": ">=5.6.1",
+        "paragonie/constant_time_encoding": "^1|^2",
+        "paragonie/random_compat": "^1.4|^2.0|^9.99.99"
+    },
+    "require-dev": {
+        "phpunit/phpunit": "*"
+    },
+    "suggest": {
+        "ext-libsodium": "SSH2/SFTP can make use of some algorithms provided by the libsodium-php extension.",
+        "ext-openssl": "Install the OpenSSL extension in order to speed up a wide variety of cryptographic operations.",
+        "ext-mcrypt": "Install the Mcrypt extension in order to speed up a few other cryptographic operations.",
+        "ext-gmp": "Install the GMP (GNU Multiple Precision) extension in order to speed up arbitrary precision integer arithmetic operations.",
+        "ext-dom": "Install the DOM extension to load XML formatted public keys."
+    },
+    "autoload": {
+        "files": [
+            "phpseclib/bootstrap.php"
+        ],
+        "psr-4": {
+            "phpseclib3\\": "phpseclib/"
+        }
+    },
+    "autoload-dev": {
+        "psr-4": {
+            "phpseclib3\\Tests\\": "tests/"
+        }
+    },
+    "config": {
+        "sort-packages": true
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Common/Functions/Strings.php b/vendor/phpseclib/phpseclib/phpseclib/Common/Functions/Strings.php
new file mode 100644
index 0000000..eac793a
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Common/Functions/Strings.php
@@ -0,0 +1,505 @@
+<?php
+
+/**
+ * Common String Functions
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Common\Functions;
+
+use ParagonIE\ConstantTime\Base64;
+use ParagonIE\ConstantTime\Base64UrlSafe;
+use ParagonIE\ConstantTime\Hex;
+use phpseclib3\Math\BigInteger;
+use phpseclib3\Math\Common\FiniteField;
+
+/**
+ * Common String Functions
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class Strings
+{
+    /**
+     * String Shift
+     *
+     * Inspired by array_shift
+     *
+     * @param string $string
+     * @param int $index
+     * @return string
+     */
+    public static function shift(&$string, $index = 1)
+    {
+        $substr = substr($string, 0, $index);
+        $string = substr($string, $index);
+        return $substr;
+    }
+
+    /**
+     * String Pop
+     *
+     * Inspired by array_pop
+     *
+     * @param string $string
+     * @param int $index
+     * @return string
+     */
+    public static function pop(&$string, $index = 1)
+    {
+        $substr = substr($string, -$index);
+        $string = substr($string, 0, -$index);
+        return $substr;
+    }
+
+    /**
+     * Parse SSH2-style string
+     *
+     * Returns either an array or a boolean if $data is malformed.
+     *
+     * Valid characters for $format are as follows:
+     *
+     * C = byte
+     * b = boolean (true/false)
+     * N = uint32
+     * Q = uint64
+     * s = string
+     * i = mpint
+     * L = name-list
+     *
+     * uint64 is not supported.
+     *
+     * @param string $format
+     * @param string $data
+     * @return mixed
+     */
+    public static function unpackSSH2($format, &$data)
+    {
+        $format = self::formatPack($format);
+        $result = [];
+        for ($i = 0; $i < strlen($format); $i++) {
+            switch ($format[$i]) {
+                case 'C':
+                case 'b':
+                    if (!strlen($data)) {
+                        throw new \LengthException('At least one byte needs to be present for successful C / b decodes');
+                    }
+                    break;
+                case 'N':
+                case 'i':
+                case 's':
+                case 'L':
+                    if (strlen($data) < 4) {
+                        throw new \LengthException('At least four byte needs to be present for successful N / i / s / L decodes');
+                    }
+                    break;
+                case 'Q':
+                    if (strlen($data) < 8) {
+                        throw new \LengthException('At least eight byte needs to be present for successful N / i / s / L decodes');
+                    }
+                    break;
+
+                default:
+                    throw new \InvalidArgumentException('$format contains an invalid character');
+            }
+            switch ($format[$i]) {
+                case 'C':
+                    $result[] = ord(self::shift($data));
+                    continue 2;
+                case 'b':
+                    $result[] = ord(self::shift($data)) != 0;
+                    continue 2;
+                case 'N':
+                    list(, $temp) = unpack('N', self::shift($data, 4));
+                    $result[] = $temp;
+                    continue 2;
+                case 'Q':
+                    // pack() added support for Q in PHP 5.6.3 and PHP 5.6 is phpseclib 3's minimum version
+                    // so in theory we could support this BUT, "64-bit format codes are not available for
+                    // 32-bit versions" and phpseclib works on 32-bit installs. on 32-bit installs
+                    // 64-bit floats can be used to get larger numbers then 32-bit signed ints would allow
+                    // for. sure, you're not gonna get the full precision of 64-bit numbers but just because
+                    // you need > 32-bit precision doesn't mean you need the full 64-bit precision
+                    extract(unpack('Nupper/Nlower', self::shift($data, 8)));
+                    $temp = $upper ? 4294967296 * $upper : 0;
+                    $temp += $lower < 0 ? ($lower & 0x7FFFFFFFF) + 0x80000000 : $lower;
+                    // $temp = hexdec(bin2hex(self::shift($data, 8)));
+                    $result[] = $temp;
+                    continue 2;
+            }
+            list(, $length) = unpack('N', self::shift($data, 4));
+            if (strlen($data) < $length) {
+                throw new \LengthException("$length bytes needed; " . strlen($data) . ' bytes available');
+            }
+            $temp = self::shift($data, $length);
+            switch ($format[$i]) {
+                case 'i':
+                    $result[] = new BigInteger($temp, -256);
+                    break;
+                case 's':
+                    $result[] = $temp;
+                    break;
+                case 'L':
+                    $result[] = explode(',', $temp);
+            }
+        }
+
+        return $result;
+    }
+
+    /**
+     * Create SSH2-style string
+     *
+     * @param string $format
+     * @param string|int|float|array|bool ...$elements
+     * @return string
+     */
+    public static function packSSH2($format, ...$elements)
+    {
+        $format = self::formatPack($format);
+        if (strlen($format) != count($elements)) {
+            throw new \InvalidArgumentException('There must be as many arguments as there are characters in the $format string');
+        }
+        $result = '';
+        for ($i = 0; $i < strlen($format); $i++) {
+            $element = $elements[$i];
+            switch ($format[$i]) {
+                case 'C':
+                    if (!is_int($element)) {
+                        throw new \InvalidArgumentException('Bytes must be represented as an integer between 0 and 255, inclusive.');
+                    }
+                    $result .= pack('C', $element);
+                    break;
+                case 'b':
+                    if (!is_bool($element)) {
+                        throw new \InvalidArgumentException('A boolean parameter was expected.');
+                    }
+                    $result .= $element ? "\1" : "\0";
+                    break;
+                case 'Q':
+                    if (!is_int($element) && !is_float($element)) {
+                        throw new \InvalidArgumentException('An integer was expected.');
+                    }
+                    // 4294967296 == 1 << 32
+                    $result .= pack('NN', $element / 4294967296, $element);
+                    break;
+                case 'N':
+                    if (is_float($element)) {
+                        $element = (int) $element;
+                    }
+                    if (!is_int($element)) {
+                        throw new \InvalidArgumentException('An integer was expected.');
+                    }
+                    $result .= pack('N', $element);
+                    break;
+                case 's':
+                    if (!self::is_stringable($element)) {
+                        throw new \InvalidArgumentException('A string was expected.');
+                    }
+                    $result .= pack('Na*', strlen($element), $element);
+                    break;
+                case 'i':
+                    if (!$element instanceof BigInteger && !$element instanceof FiniteField\Integer) {
+                        throw new \InvalidArgumentException('A phpseclib3\Math\BigInteger or phpseclib3\Math\Common\FiniteField\Integer object was expected.');
+                    }
+                    $element = $element->toBytes(true);
+                    $result .= pack('Na*', strlen($element), $element);
+                    break;
+                case 'L':
+                    if (!is_array($element)) {
+                        throw new \InvalidArgumentException('An array was expected.');
+                    }
+                    $element = implode(',', $element);
+                    $result .= pack('Na*', strlen($element), $element);
+                    break;
+                default:
+                    throw new \InvalidArgumentException('$format contains an invalid character');
+            }
+        }
+        return $result;
+    }
+
+    /**
+     * Expand a pack string
+     *
+     * Converts C5 to CCCCC, for example.
+     *
+     * @param string $format
+     * @return string
+     */
+    private static function formatPack($format)
+    {
+        $parts = preg_split('#(\d+)#', $format, -1, PREG_SPLIT_DELIM_CAPTURE);
+        $format = '';
+        for ($i = 1; $i < count($parts); $i += 2) {
+            $format .= substr($parts[$i - 1], 0, -1) . str_repeat(substr($parts[$i - 1], -1), $parts[$i]);
+        }
+        $format .= $parts[$i - 1];
+
+        return $format;
+    }
+
+    /**
+     * Convert binary data into bits
+     *
+     * bin2hex / hex2bin refer to base-256 encoded data as binary, whilst
+     * decbin / bindec refer to base-2 encoded data as binary. For the purposes
+     * of this function, bin refers to base-256 encoded data whilst bits refers
+     * to base-2 encoded data
+     *
+     * @param string $x
+     * @return string
+     */
+    public static function bits2bin($x)
+    {
+        /*
+        // the pure-PHP approach is faster than the GMP approach
+        if (function_exists('gmp_export')) {
+             return strlen($x) ? gmp_export(gmp_init($x, 2)) : gmp_init(0);
+        }
+        */
+
+        if (preg_match('#[^01]#', $x)) {
+            throw new \RuntimeException('The only valid characters are 0 and 1');
+        }
+
+        if (!defined('PHP_INT_MIN')) {
+            define('PHP_INT_MIN', ~PHP_INT_MAX);
+        }
+
+        $length = strlen($x);
+        if (!$length) {
+            return '';
+        }
+        $block_size = PHP_INT_SIZE << 3;
+        $pad = $block_size - ($length % $block_size);
+        if ($pad != $block_size) {
+            $x = str_repeat('0', $pad) . $x;
+        }
+
+        $parts = str_split($x, $block_size);
+        $str = '';
+        foreach ($parts as $part) {
+            $xor = $part[0] == '1' ? PHP_INT_MIN : 0;
+            $part[0] = '0';
+            $str .= pack(
+                PHP_INT_SIZE == 4 ? 'N' : 'J',
+                $xor ^ eval('return 0b' . $part . ';')
+            );
+        }
+        return ltrim($str, "\0");
+    }
+
+    /**
+     * Convert bits to binary data
+     *
+     * @param string $x
+     * @return string
+     */
+    public static function bin2bits($x, $trim = true)
+    {
+        /*
+        // the pure-PHP approach is slower than the GMP approach BUT
+        // i want to the pure-PHP version to be easily unit tested as well
+        if (function_exists('gmp_import')) {
+            return gmp_strval(gmp_import($x), 2);
+        }
+        */
+
+        $len = strlen($x);
+        $mod = $len % PHP_INT_SIZE;
+        if ($mod) {
+            $x = str_pad($x, $len + PHP_INT_SIZE - $mod, "\0", STR_PAD_LEFT);
+        }
+
+        $bits = '';
+        if (PHP_INT_SIZE == 4) {
+            $digits = unpack('N*', $x);
+            foreach ($digits as $digit) {
+                $bits .= sprintf('%032b', $digit);
+            }
+        } else {
+            $digits = unpack('J*', $x);
+            foreach ($digits as $digit) {
+                $bits .= sprintf('%064b', $digit);
+            }
+        }
+
+        return $trim ? ltrim($bits, '0') : $bits;
+    }
+
+    /**
+     * Switch Endianness Bit Order
+     *
+     * @param string $x
+     * @return string
+     */
+    public static function switchEndianness($x)
+    {
+        $r = '';
+        for ($i = strlen($x) - 1; $i >= 0; $i--) {
+            $b = ord($x[$i]);
+            if (PHP_INT_SIZE === 8) {
+                // 3 operations
+                // from http://graphics.stanford.edu/~seander/bithacks.html#ReverseByteWith64BitsDiv
+                $r .= chr((($b * 0x0202020202) & 0x010884422010) % 1023);
+            } else {
+                // 7 operations
+                // from http://graphics.stanford.edu/~seander/bithacks.html#ReverseByteWith32Bits
+                $p1 = ($b * 0x0802) & 0x22110;
+                $p2 = ($b * 0x8020) & 0x88440;
+                $r .= chr(
+                    (($p1 | $p2) * 0x10101) >> 16
+                );
+            }
+        }
+        return $r;
+    }
+
+    /**
+     * Increment the current string
+     *
+     * @param string $var
+     * @return string
+     */
+    public static function increment_str(&$var)
+    {
+        if (function_exists('sodium_increment')) {
+            $var = strrev($var);
+            sodium_increment($var);
+            $var = strrev($var);
+            return $var;
+        }
+
+        for ($i = 4; $i <= strlen($var); $i += 4) {
+            $temp = substr($var, -$i, 4);
+            switch ($temp) {
+                case "\xFF\xFF\xFF\xFF":
+                    $var = substr_replace($var, "\x00\x00\x00\x00", -$i, 4);
+                    break;
+                case "\x7F\xFF\xFF\xFF":
+                    $var = substr_replace($var, "\x80\x00\x00\x00", -$i, 4);
+                    return $var;
+                default:
+                    $temp = unpack('Nnum', $temp);
+                    $var = substr_replace($var, pack('N', $temp['num'] + 1), -$i, 4);
+                    return $var;
+            }
+        }
+
+        $remainder = strlen($var) % 4;
+
+        if ($remainder == 0) {
+            return $var;
+        }
+
+        $temp = unpack('Nnum', str_pad(substr($var, 0, $remainder), 4, "\0", STR_PAD_LEFT));
+        $temp = substr(pack('N', $temp['num'] + 1), -$remainder);
+        $var = substr_replace($var, $temp, 0, $remainder);
+
+        return $var;
+    }
+
+    /**
+     * Find whether the type of a variable is string (or could be converted to one)
+     *
+     * @param mixed $var
+     * @return bool
+     * @psalm-assert-if-true string|\Stringable $var
+     */
+    public static function is_stringable($var)
+    {
+        return is_string($var) || (is_object($var) && method_exists($var, '__toString'));
+    }
+
+    /**
+     * Constant Time Base64-decoding
+     *
+     * ParagoneIE\ConstantTime doesn't use libsodium if it's available so we'll do so
+     * ourselves. see https://github.com/paragonie/constant_time_encoding/issues/39
+     *
+     * @param string $data
+     * @return string
+     */
+    public static function base64_decode($data)
+    {
+        return function_exists('sodium_base642bin') ?
+            sodium_base642bin($data, SODIUM_BASE64_VARIANT_ORIGINAL_NO_PADDING, '=') :
+            Base64::decode($data);
+    }
+
+    /**
+     * Constant Time Base64-decoding (URL safe)
+     *
+     * @param string $data
+     * @return string
+     */
+    public static function base64url_decode($data)
+    {
+        // return self::base64_decode(str_replace(['-', '_'], ['+', '/'], $data));
+
+        return function_exists('sodium_base642bin') ?
+            sodium_base642bin($data, SODIUM_BASE64_VARIANT_URLSAFE_NO_PADDING, '=') :
+            Base64UrlSafe::decode($data);
+    }
+
+    /**
+     * Constant Time Base64-encoding
+     *
+     * @param string $data
+     * @return string
+     */
+    public static function base64_encode($data)
+    {
+        return function_exists('sodium_bin2base64') ?
+            sodium_bin2base64($data, SODIUM_BASE64_VARIANT_ORIGINAL) :
+            Base64::encode($data);
+    }
+
+    /**
+     * Constant Time Base64-encoding (URL safe)
+     *
+     * @param string $data
+     * @return string
+     */
+    public static function base64url_encode($data)
+    {
+        // return str_replace(['+', '/'], ['-', '_'], self::base64_encode($data));
+
+        return function_exists('sodium_bin2base64') ?
+            sodium_bin2base64($data, SODIUM_BASE64_VARIANT_URLSAFE) :
+            Base64UrlSafe::encode($data);
+    }
+
+    /**
+     * Constant Time Hex Decoder
+     *
+     * @param string $data
+     * @return string
+     */
+    public static function hex2bin($data)
+    {
+        return function_exists('sodium_hex2bin') ?
+            sodium_hex2bin($data) :
+            Hex::decode($data);
+    }
+
+    /**
+     * Constant Time Hex Encoder
+     *
+     * @param string $data
+     * @return string
+     */
+    public static function bin2hex($data)
+    {
+        return function_exists('sodium_bin2hex') ?
+            sodium_bin2hex($data) :
+            Hex::encode($data);
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/AES.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/AES.php
new file mode 100644
index 0000000..4038716
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/AES.php
@@ -0,0 +1,116 @@
+<?php
+
+/**
+ * Pure-PHP implementation of AES.
+ *
+ * Uses mcrypt, if available/possible, and an internal implementation, otherwise.
+ *
+ * PHP version 5
+ *
+ * NOTE: Since AES.php is (for compatibility and phpseclib-historical reasons) virtually
+ * just a wrapper to Rijndael.php you may consider using Rijndael.php instead of
+ * to save one include_once().
+ *
+ * If {@link self::setKeyLength() setKeyLength()} isn't called, it'll be calculated from
+ * {@link self::setKey() setKey()}.  ie. if the key is 128-bits, the key length will be 128-bits.  If it's 136-bits
+ * it'll be null-padded to 192-bits and 192 bits will be the key length until {@link self::setKey() setKey()}
+ * is called, again, at which point, it'll be recalculated.
+ *
+ * Since \phpseclib3\Crypt\AES extends \phpseclib3\Crypt\Rijndael, some functions are available to be called that, in the context of AES, don't
+ * make a whole lot of sense.  {@link self::setBlockLength() setBlockLength()}, for instance.  Calling that function,
+ * however possible, won't do anything (AES has a fixed block length whereas Rijndael has a variable one).
+ *
+ * Here's a short example of how to use this library:
+ * <code>
+ * <?php
+ *    include 'vendor/autoload.php';
+ *
+ *    $aes = new \phpseclib3\Crypt\AES('ctr');
+ *
+ *    $aes->setKey('abcdefghijklmnop');
+ *
+ *    $size = 10 * 1024;
+ *    $plaintext = '';
+ *    for ($i = 0; $i < $size; $i++) {
+ *        $plaintext.= 'a';
+ *    }
+ *
+ *    echo $aes->decrypt($aes->encrypt($plaintext));
+ * ?>
+ * </code>
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2008 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt;
+
+/**
+ * Pure-PHP implementation of AES.
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+class AES extends Rijndael
+{
+    /**
+     * Dummy function
+     *
+     * Since \phpseclib3\Crypt\AES extends \phpseclib3\Crypt\Rijndael, this function is, technically, available, but it doesn't do anything.
+     *
+     * @see \phpseclib3\Crypt\Rijndael::setBlockLength()
+     * @param int $length
+     * @throws \BadMethodCallException anytime it's called
+     */
+    public function setBlockLength($length)
+    {
+        throw new \BadMethodCallException('The block length cannot be set for AES.');
+    }
+
+    /**
+     * Sets the key length
+     *
+     * Valid key lengths are 128, 192, and 256.  Set the link to bool(false) to disable a fixed key length
+     *
+     * @see \phpseclib3\Crypt\Rijndael:setKeyLength()
+     * @param int $length
+     * @throws \LengthException if the key length isn't supported
+     */
+    public function setKeyLength($length)
+    {
+        switch ($length) {
+            case 128:
+            case 192:
+            case 256:
+                break;
+            default:
+                throw new \LengthException('Key of size ' . $length . ' not supported by this algorithm. Only keys of sizes 128, 192 or 256 supported');
+        }
+        parent::setKeyLength($length);
+    }
+
+    /**
+     * Sets the key.
+     *
+     * Rijndael supports five different key lengths, AES only supports three.
+     *
+     * @see \phpseclib3\Crypt\Rijndael:setKey()
+     * @see setKeyLength()
+     * @param string $key
+     * @throws \LengthException if the key length isn't supported
+     */
+    public function setKey($key)
+    {
+        switch (strlen($key)) {
+            case 16:
+            case 24:
+            case 32:
+                break;
+            default:
+                throw new \LengthException('Key of size ' . strlen($key) . ' not supported by this algorithm. Only keys of sizes 16, 24 or 32 supported');
+        }
+
+        parent::setKey($key);
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/Blowfish.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/Blowfish.php
new file mode 100644
index 0000000..1225070
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/Blowfish.php
@@ -0,0 +1,918 @@
+<?php
+
+/**
+ * Pure-PHP implementation of Blowfish.
+ *
+ * Uses mcrypt, if available, and an internal implementation, otherwise.
+ *
+ * PHP version 5
+ *
+ * Useful resources are as follows:
+ *
+ *  - {@link http://en.wikipedia.org/wiki/Blowfish_(cipher) Wikipedia description of Blowfish}
+ *
+ * # An overview of bcrypt vs Blowfish
+ *
+ * OpenSSH private keys use a customized version of bcrypt. Specifically, instead of
+ * encrypting OrpheanBeholderScryDoubt 64 times OpenSSH's bcrypt variant encrypts
+ * OxychromaticBlowfishSwatDynamite 64 times. so we can't use crypt().
+ *
+ * bcrypt is basically Blowfish but instead of performing the key expansion once it performs
+ * the expansion 129 times for each round, with the first key expansion interleaving the salt
+ * and password. This renders OpenSSL unusable and forces us to use a pure-PHP implementation
+ * of blowfish.
+ *
+ * # phpseclib's four different _encryptBlock() implementations
+ *
+ * When using Blowfish as an encryption algorithm, _encryptBlock() is called 9 + 512 +
+ * (the number of blocks in the plaintext) times.
+ *
+ * Each of the first 9 calls to _encryptBlock() modify the P-array. Each of the next 512
+ * calls modify the S-boxes. The remaining _encryptBlock() calls operate on the plaintext to
+ * produce the ciphertext. In the pure-PHP implementation of Blowfish these remaining
+ * _encryptBlock() calls are highly optimized through the use of eval(). Among other things,
+ * P-array lookups are eliminated by hard-coding the key-dependent P-array values, and thus we
+ * have explained 2 of the 4 different _encryptBlock() implementations.
+ *
+ * With bcrypt things are a bit different. _encryptBlock() is called 1,079,296 times,
+ * assuming 16 rounds (which is what OpenSSH's bcrypt defaults to). The eval()-optimized
+ * _encryptBlock() isn't as beneficial because the P-array values are not constant. Well, they
+ * are constant, but only for, at most, 777 _encryptBlock() calls, which is equivalent to ~6KB
+ * of data. The average length of back to back _encryptBlock() calls with a fixed P-array is
+ * 514.12, which is ~4KB of data. Creating an eval()-optimized _encryptBlock() has an upfront
+ * cost, which is CPU dependent and is probably not going to be worth it for just ~4KB of
+ * data. Conseqeuently, bcrypt does not benefit from the eval()-optimized _encryptBlock().
+ *
+ * The regular _encryptBlock() does unpack() and pack() on every call, as well, and that can
+ * begin to add up after one million function calls.
+ *
+ * In theory, one might think that it might be beneficial to rewrite all block ciphers so
+ * that, instead of passing strings to _encryptBlock(), you convert the string to an array of
+ * integers and then pass successive subarrays of that array to _encryptBlock. This, however,
+ * kills PHP's memory use. Like let's say you have a 1MB long string. After doing
+ * $in = str_repeat('a', 1024 * 1024); PHP's memory utilization jumps up by ~1MB. After doing
+ * $blocks = str_split($in, 4); it jumps up by an additional ~16MB. After
+ * $blocks = array_map(fn($x) => unpack('N*', $x), $blocks); it jumps up by an additional
+ * ~90MB, yielding a 106x increase in memory usage. Consequently, it bcrypt calls a different
+ * _encryptBlock() then the regular Blowfish does. That said, the Blowfish _encryptBlock() is
+ * basically just a thin wrapper around the bcrypt _encryptBlock(), so there's that.
+ *
+ * This explains 3 of the 4 _encryptBlock() implementations. the last _encryptBlock()
+ * implementation can best be understood by doing Ctrl + F and searching for where
+ * self::$use_reg_intval is defined.
+ *
+ * # phpseclib's three different _setupKey() implementations
+ *
+ * Every bcrypt round is the equivalent of encrypting 512KB of data. Since OpenSSH uses 16
+ * rounds by default that's ~8MB of data that's essentially being encrypted whenever
+ * you use bcrypt. That's a lot of data, however, bcrypt operates within tighter constraints
+ * than regular Blowfish, so we can use that to our advantage. In particular, whereas Blowfish
+ * supports variable length keys, in bcrypt, the initial "key" is the sha512 hash of the
+ * password. sha512 hashes are 512 bits or 64 bytes long and thus the bcrypt keys are of a
+ * fixed length whereas Blowfish keys are not of a fixed length.
+ *
+ * bcrypt actually has two different key expansion steps. The first one (expandstate) is
+ * constantly XOR'ing every _encryptBlock() parameter against the salt prior _encryptBlock()'s
+ * being called. The second one (expand0state) is more similar to Blowfish's _setupKey()
+ * but it can still use the fixed length key optimization discussed above and can do away with
+ * the pack() / unpack() calls.
+ *
+ * I suppose _setupKey() could be made to be a thin wrapper around expandstate() but idk it's
+ * just a lot of work for very marginal benefits as _setupKey() is only called once for
+ * regular Blowfish vs the 128 times it's called --per round-- with bcrypt.
+ *
+ * # blowfish + bcrypt in the same class
+ *
+ * Altho there's a lot of Blowfish code that bcrypt doesn't re-use, bcrypt does re-use the
+ * initial S-boxes, the initial P-array and the int-only _encryptBlock() implementation.
+ *
+ * # Credit
+ *
+ * phpseclib's bcrypt implementation is based losely off of OpenSSH's implementation:
+ *
+ * https://github.com/openssh/openssh-portable/blob/master/openbsd-compat/bcrypt_pbkdf.c
+ *
+ * Here's a short example of how to use this library:
+ * <code>
+ * <?php
+ *    include 'vendor/autoload.php';
+ *
+ *    $blowfish = new \phpseclib3\Crypt\Blowfish('ctr');
+ *
+ *    $blowfish->setKey('12345678901234567890123456789012');
+ *
+ *    $plaintext = str_repeat('a', 1024);
+ *
+ *    echo $blowfish->decrypt($blowfish->encrypt($plaintext));
+ * ?>
+ * </code>
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @author    Hans-Juergen Petrich <petrich@tronic-media.com>
+ * @copyright 2007 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt;
+
+use phpseclib3\Crypt\Common\BlockCipher;
+
+/**
+ * Pure-PHP implementation of Blowfish.
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ * @author  Hans-Juergen Petrich <petrich@tronic-media.com>
+ */
+class Blowfish extends BlockCipher
+{
+    /**
+     * Block Length of the cipher
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::block_size
+     * @var int
+     */
+    protected $block_size = 8;
+
+    /**
+     * The mcrypt specific name of the cipher
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::cipher_name_mcrypt
+     * @var string
+     */
+    protected $cipher_name_mcrypt = 'blowfish';
+
+    /**
+     * Optimizing value while CFB-encrypting
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::cfb_init_len
+     * @var int
+     */
+    protected $cfb_init_len = 500;
+
+    /**
+     * The fixed subkeys boxes ($sbox0 - $sbox3) with 256 entries each
+     *
+     * S-Box 0
+     *
+     * @var    array
+     */
+    private static $sbox0 = [
+        0xd1310ba6, 0x98dfb5ac, 0x2ffd72db, 0xd01adfb7, 0xb8e1afed, 0x6a267e96, 0xba7c9045, 0xf12c7f99,
+        0x24a19947, 0xb3916cf7, 0x0801f2e2, 0x858efc16, 0x636920d8, 0x71574e69, 0xa458fea3, 0xf4933d7e,
+        0x0d95748f, 0x728eb658, 0x718bcd58, 0x82154aee, 0x7b54a41d, 0xc25a59b5, 0x9c30d539, 0x2af26013,
+        0xc5d1b023, 0x286085f0, 0xca417918, 0xb8db38ef, 0x8e79dcb0, 0x603a180e, 0x6c9e0e8b, 0xb01e8a3e,
+        0xd71577c1, 0xbd314b27, 0x78af2fda, 0x55605c60, 0xe65525f3, 0xaa55ab94, 0x57489862, 0x63e81440,
+        0x55ca396a, 0x2aab10b6, 0xb4cc5c34, 0x1141e8ce, 0xa15486af, 0x7c72e993, 0xb3ee1411, 0x636fbc2a,
+        0x2ba9c55d, 0x741831f6, 0xce5c3e16, 0x9b87931e, 0xafd6ba33, 0x6c24cf5c, 0x7a325381, 0x28958677,
+        0x3b8f4898, 0x6b4bb9af, 0xc4bfe81b, 0x66282193, 0x61d809cc, 0xfb21a991, 0x487cac60, 0x5dec8032,
+        0xef845d5d, 0xe98575b1, 0xdc262302, 0xeb651b88, 0x23893e81, 0xd396acc5, 0x0f6d6ff3, 0x83f44239,
+        0x2e0b4482, 0xa4842004, 0x69c8f04a, 0x9e1f9b5e, 0x21c66842, 0xf6e96c9a, 0x670c9c61, 0xabd388f0,
+        0x6a51a0d2, 0xd8542f68, 0x960fa728, 0xab5133a3, 0x6eef0b6c, 0x137a3be4, 0xba3bf050, 0x7efb2a98,
+        0xa1f1651d, 0x39af0176, 0x66ca593e, 0x82430e88, 0x8cee8619, 0x456f9fb4, 0x7d84a5c3, 0x3b8b5ebe,
+        0xe06f75d8, 0x85c12073, 0x401a449f, 0x56c16aa6, 0x4ed3aa62, 0x363f7706, 0x1bfedf72, 0x429b023d,
+        0x37d0d724, 0xd00a1248, 0xdb0fead3, 0x49f1c09b, 0x075372c9, 0x80991b7b, 0x25d479d8, 0xf6e8def7,
+        0xe3fe501a, 0xb6794c3b, 0x976ce0bd, 0x04c006ba, 0xc1a94fb6, 0x409f60c4, 0x5e5c9ec2, 0x196a2463,
+        0x68fb6faf, 0x3e6c53b5, 0x1339b2eb, 0x3b52ec6f, 0x6dfc511f, 0x9b30952c, 0xcc814544, 0xaf5ebd09,
+        0xbee3d004, 0xde334afd, 0x660f2807, 0x192e4bb3, 0xc0cba857, 0x45c8740f, 0xd20b5f39, 0xb9d3fbdb,
+        0x5579c0bd, 0x1a60320a, 0xd6a100c6, 0x402c7279, 0x679f25fe, 0xfb1fa3cc, 0x8ea5e9f8, 0xdb3222f8,
+        0x3c7516df, 0xfd616b15, 0x2f501ec8, 0xad0552ab, 0x323db5fa, 0xfd238760, 0x53317b48, 0x3e00df82,
+        0x9e5c57bb, 0xca6f8ca0, 0x1a87562e, 0xdf1769db, 0xd542a8f6, 0x287effc3, 0xac6732c6, 0x8c4f5573,
+        0x695b27b0, 0xbbca58c8, 0xe1ffa35d, 0xb8f011a0, 0x10fa3d98, 0xfd2183b8, 0x4afcb56c, 0x2dd1d35b,
+        0x9a53e479, 0xb6f84565, 0xd28e49bc, 0x4bfb9790, 0xe1ddf2da, 0xa4cb7e33, 0x62fb1341, 0xcee4c6e8,
+        0xef20cada, 0x36774c01, 0xd07e9efe, 0x2bf11fb4, 0x95dbda4d, 0xae909198, 0xeaad8e71, 0x6b93d5a0,
+        0xd08ed1d0, 0xafc725e0, 0x8e3c5b2f, 0x8e7594b7, 0x8ff6e2fb, 0xf2122b64, 0x8888b812, 0x900df01c,
+        0x4fad5ea0, 0x688fc31c, 0xd1cff191, 0xb3a8c1ad, 0x2f2f2218, 0xbe0e1777, 0xea752dfe, 0x8b021fa1,
+        0xe5a0cc0f, 0xb56f74e8, 0x18acf3d6, 0xce89e299, 0xb4a84fe0, 0xfd13e0b7, 0x7cc43b81, 0xd2ada8d9,
+        0x165fa266, 0x80957705, 0x93cc7314, 0x211a1477, 0xe6ad2065, 0x77b5fa86, 0xc75442f5, 0xfb9d35cf,
+        0xebcdaf0c, 0x7b3e89a0, 0xd6411bd3, 0xae1e7e49, 0x00250e2d, 0x2071b35e, 0x226800bb, 0x57b8e0af,
+        0x2464369b, 0xf009b91e, 0x5563911d, 0x59dfa6aa, 0x78c14389, 0xd95a537f, 0x207d5ba2, 0x02e5b9c5,
+        0x83260376, 0x6295cfa9, 0x11c81968, 0x4e734a41, 0xb3472dca, 0x7b14a94a, 0x1b510052, 0x9a532915,
+        0xd60f573f, 0xbc9bc6e4, 0x2b60a476, 0x81e67400, 0x08ba6fb5, 0x571be91f, 0xf296ec6b, 0x2a0dd915,
+        0xb6636521, 0xe7b9f9b6, 0xff34052e, 0xc5855664, 0x53b02d5d, 0xa99f8fa1, 0x08ba4799, 0x6e85076a
+    ];
+
+    /**
+     * S-Box 1
+     *
+     * @var    array
+     */
+    private static $sbox1 = [
+        0x4b7a70e9, 0xb5b32944, 0xdb75092e, 0xc4192623, 0xad6ea6b0, 0x49a7df7d, 0x9cee60b8, 0x8fedb266,
+        0xecaa8c71, 0x699a17ff, 0x5664526c, 0xc2b19ee1, 0x193602a5, 0x75094c29, 0xa0591340, 0xe4183a3e,
+        0x3f54989a, 0x5b429d65, 0x6b8fe4d6, 0x99f73fd6, 0xa1d29c07, 0xefe830f5, 0x4d2d38e6, 0xf0255dc1,
+        0x4cdd2086, 0x8470eb26, 0x6382e9c6, 0x021ecc5e, 0x09686b3f, 0x3ebaefc9, 0x3c971814, 0x6b6a70a1,
+        0x687f3584, 0x52a0e286, 0xb79c5305, 0xaa500737, 0x3e07841c, 0x7fdeae5c, 0x8e7d44ec, 0x5716f2b8,
+        0xb03ada37, 0xf0500c0d, 0xf01c1f04, 0x0200b3ff, 0xae0cf51a, 0x3cb574b2, 0x25837a58, 0xdc0921bd,
+        0xd19113f9, 0x7ca92ff6, 0x94324773, 0x22f54701, 0x3ae5e581, 0x37c2dadc, 0xc8b57634, 0x9af3dda7,
+        0xa9446146, 0x0fd0030e, 0xecc8c73e, 0xa4751e41, 0xe238cd99, 0x3bea0e2f, 0x3280bba1, 0x183eb331,
+        0x4e548b38, 0x4f6db908, 0x6f420d03, 0xf60a04bf, 0x2cb81290, 0x24977c79, 0x5679b072, 0xbcaf89af,
+        0xde9a771f, 0xd9930810, 0xb38bae12, 0xdccf3f2e, 0x5512721f, 0x2e6b7124, 0x501adde6, 0x9f84cd87,
+        0x7a584718, 0x7408da17, 0xbc9f9abc, 0xe94b7d8c, 0xec7aec3a, 0xdb851dfa, 0x63094366, 0xc464c3d2,
+        0xef1c1847, 0x3215d908, 0xdd433b37, 0x24c2ba16, 0x12a14d43, 0x2a65c451, 0x50940002, 0x133ae4dd,
+        0x71dff89e, 0x10314e55, 0x81ac77d6, 0x5f11199b, 0x043556f1, 0xd7a3c76b, 0x3c11183b, 0x5924a509,
+        0xf28fe6ed, 0x97f1fbfa, 0x9ebabf2c, 0x1e153c6e, 0x86e34570, 0xeae96fb1, 0x860e5e0a, 0x5a3e2ab3,
+        0x771fe71c, 0x4e3d06fa, 0x2965dcb9, 0x99e71d0f, 0x803e89d6, 0x5266c825, 0x2e4cc978, 0x9c10b36a,
+        0xc6150eba, 0x94e2ea78, 0xa5fc3c53, 0x1e0a2df4, 0xf2f74ea7, 0x361d2b3d, 0x1939260f, 0x19c27960,
+        0x5223a708, 0xf71312b6, 0xebadfe6e, 0xeac31f66, 0xe3bc4595, 0xa67bc883, 0xb17f37d1, 0x018cff28,
+        0xc332ddef, 0xbe6c5aa5, 0x65582185, 0x68ab9802, 0xeecea50f, 0xdb2f953b, 0x2aef7dad, 0x5b6e2f84,
+        0x1521b628, 0x29076170, 0xecdd4775, 0x619f1510, 0x13cca830, 0xeb61bd96, 0x0334fe1e, 0xaa0363cf,
+        0xb5735c90, 0x4c70a239, 0xd59e9e0b, 0xcbaade14, 0xeecc86bc, 0x60622ca7, 0x9cab5cab, 0xb2f3846e,
+        0x648b1eaf, 0x19bdf0ca, 0xa02369b9, 0x655abb50, 0x40685a32, 0x3c2ab4b3, 0x319ee9d5, 0xc021b8f7,
+        0x9b540b19, 0x875fa099, 0x95f7997e, 0x623d7da8, 0xf837889a, 0x97e32d77, 0x11ed935f, 0x16681281,
+        0x0e358829, 0xc7e61fd6, 0x96dedfa1, 0x7858ba99, 0x57f584a5, 0x1b227263, 0x9b83c3ff, 0x1ac24696,
+        0xcdb30aeb, 0x532e3054, 0x8fd948e4, 0x6dbc3128, 0x58ebf2ef, 0x34c6ffea, 0xfe28ed61, 0xee7c3c73,
+        0x5d4a14d9, 0xe864b7e3, 0x42105d14, 0x203e13e0, 0x45eee2b6, 0xa3aaabea, 0xdb6c4f15, 0xfacb4fd0,
+        0xc742f442, 0xef6abbb5, 0x654f3b1d, 0x41cd2105, 0xd81e799e, 0x86854dc7, 0xe44b476a, 0x3d816250,
+        0xcf62a1f2, 0x5b8d2646, 0xfc8883a0, 0xc1c7b6a3, 0x7f1524c3, 0x69cb7492, 0x47848a0b, 0x5692b285,
+        0x095bbf00, 0xad19489d, 0x1462b174, 0x23820e00, 0x58428d2a, 0x0c55f5ea, 0x1dadf43e, 0x233f7061,
+        0x3372f092, 0x8d937e41, 0xd65fecf1, 0x6c223bdb, 0x7cde3759, 0xcbee7460, 0x4085f2a7, 0xce77326e,
+        0xa6078084, 0x19f8509e, 0xe8efd855, 0x61d99735, 0xa969a7aa, 0xc50c06c2, 0x5a04abfc, 0x800bcadc,
+        0x9e447a2e, 0xc3453484, 0xfdd56705, 0x0e1e9ec9, 0xdb73dbd3, 0x105588cd, 0x675fda79, 0xe3674340,
+        0xc5c43465, 0x713e38d8, 0x3d28f89e, 0xf16dff20, 0x153e21e7, 0x8fb03d4a, 0xe6e39f2b, 0xdb83adf7
+    ];
+
+    /**
+     * S-Box 2
+     *
+     * @var    array
+     */
+    private static $sbox2 = [
+        0xe93d5a68, 0x948140f7, 0xf64c261c, 0x94692934, 0x411520f7, 0x7602d4f7, 0xbcf46b2e, 0xd4a20068,
+        0xd4082471, 0x3320f46a, 0x43b7d4b7, 0x500061af, 0x1e39f62e, 0x97244546, 0x14214f74, 0xbf8b8840,
+        0x4d95fc1d, 0x96b591af, 0x70f4ddd3, 0x66a02f45, 0xbfbc09ec, 0x03bd9785, 0x7fac6dd0, 0x31cb8504,
+        0x96eb27b3, 0x55fd3941, 0xda2547e6, 0xabca0a9a, 0x28507825, 0x530429f4, 0x0a2c86da, 0xe9b66dfb,
+        0x68dc1462, 0xd7486900, 0x680ec0a4, 0x27a18dee, 0x4f3ffea2, 0xe887ad8c, 0xb58ce006, 0x7af4d6b6,
+        0xaace1e7c, 0xd3375fec, 0xce78a399, 0x406b2a42, 0x20fe9e35, 0xd9f385b9, 0xee39d7ab, 0x3b124e8b,
+        0x1dc9faf7, 0x4b6d1856, 0x26a36631, 0xeae397b2, 0x3a6efa74, 0xdd5b4332, 0x6841e7f7, 0xca7820fb,
+        0xfb0af54e, 0xd8feb397, 0x454056ac, 0xba489527, 0x55533a3a, 0x20838d87, 0xfe6ba9b7, 0xd096954b,
+        0x55a867bc, 0xa1159a58, 0xcca92963, 0x99e1db33, 0xa62a4a56, 0x3f3125f9, 0x5ef47e1c, 0x9029317c,
+        0xfdf8e802, 0x04272f70, 0x80bb155c, 0x05282ce3, 0x95c11548, 0xe4c66d22, 0x48c1133f, 0xc70f86dc,
+        0x07f9c9ee, 0x41041f0f, 0x404779a4, 0x5d886e17, 0x325f51eb, 0xd59bc0d1, 0xf2bcc18f, 0x41113564,
+        0x257b7834, 0x602a9c60, 0xdff8e8a3, 0x1f636c1b, 0x0e12b4c2, 0x02e1329e, 0xaf664fd1, 0xcad18115,
+        0x6b2395e0, 0x333e92e1, 0x3b240b62, 0xeebeb922, 0x85b2a20e, 0xe6ba0d99, 0xde720c8c, 0x2da2f728,
+        0xd0127845, 0x95b794fd, 0x647d0862, 0xe7ccf5f0, 0x5449a36f, 0x877d48fa, 0xc39dfd27, 0xf33e8d1e,
+        0x0a476341, 0x992eff74, 0x3a6f6eab, 0xf4f8fd37, 0xa812dc60, 0xa1ebddf8, 0x991be14c, 0xdb6e6b0d,
+        0xc67b5510, 0x6d672c37, 0x2765d43b, 0xdcd0e804, 0xf1290dc7, 0xcc00ffa3, 0xb5390f92, 0x690fed0b,
+        0x667b9ffb, 0xcedb7d9c, 0xa091cf0b, 0xd9155ea3, 0xbb132f88, 0x515bad24, 0x7b9479bf, 0x763bd6eb,
+        0x37392eb3, 0xcc115979, 0x8026e297, 0xf42e312d, 0x6842ada7, 0xc66a2b3b, 0x12754ccc, 0x782ef11c,
+        0x6a124237, 0xb79251e7, 0x06a1bbe6, 0x4bfb6350, 0x1a6b1018, 0x11caedfa, 0x3d25bdd8, 0xe2e1c3c9,
+        0x44421659, 0x0a121386, 0xd90cec6e, 0xd5abea2a, 0x64af674e, 0xda86a85f, 0xbebfe988, 0x64e4c3fe,
+        0x9dbc8057, 0xf0f7c086, 0x60787bf8, 0x6003604d, 0xd1fd8346, 0xf6381fb0, 0x7745ae04, 0xd736fccc,
+        0x83426b33, 0xf01eab71, 0xb0804187, 0x3c005e5f, 0x77a057be, 0xbde8ae24, 0x55464299, 0xbf582e61,
+        0x4e58f48f, 0xf2ddfda2, 0xf474ef38, 0x8789bdc2, 0x5366f9c3, 0xc8b38e74, 0xb475f255, 0x46fcd9b9,
+        0x7aeb2661, 0x8b1ddf84, 0x846a0e79, 0x915f95e2, 0x466e598e, 0x20b45770, 0x8cd55591, 0xc902de4c,
+        0xb90bace1, 0xbb8205d0, 0x11a86248, 0x7574a99e, 0xb77f19b6, 0xe0a9dc09, 0x662d09a1, 0xc4324633,
+        0xe85a1f02, 0x09f0be8c, 0x4a99a025, 0x1d6efe10, 0x1ab93d1d, 0x0ba5a4df, 0xa186f20f, 0x2868f169,
+        0xdcb7da83, 0x573906fe, 0xa1e2ce9b, 0x4fcd7f52, 0x50115e01, 0xa70683fa, 0xa002b5c4, 0x0de6d027,
+        0x9af88c27, 0x773f8641, 0xc3604c06, 0x61a806b5, 0xf0177a28, 0xc0f586e0, 0x006058aa, 0x30dc7d62,
+        0x11e69ed7, 0x2338ea63, 0x53c2dd94, 0xc2c21634, 0xbbcbee56, 0x90bcb6de, 0xebfc7da1, 0xce591d76,
+        0x6f05e409, 0x4b7c0188, 0x39720a3d, 0x7c927c24, 0x86e3725f, 0x724d9db9, 0x1ac15bb4, 0xd39eb8fc,
+        0xed545578, 0x08fca5b5, 0xd83d7cd3, 0x4dad0fc4, 0x1e50ef5e, 0xb161e6f8, 0xa28514d9, 0x6c51133c,
+        0x6fd5c7e7, 0x56e14ec4, 0x362abfce, 0xddc6c837, 0xd79a3234, 0x92638212, 0x670efa8e, 0x406000e0
+    ];
+
+    /**
+     * S-Box 3
+     *
+     * @var    array
+     */
+    private static $sbox3 = [
+        0x3a39ce37, 0xd3faf5cf, 0xabc27737, 0x5ac52d1b, 0x5cb0679e, 0x4fa33742, 0xd3822740, 0x99bc9bbe,
+        0xd5118e9d, 0xbf0f7315, 0xd62d1c7e, 0xc700c47b, 0xb78c1b6b, 0x21a19045, 0xb26eb1be, 0x6a366eb4,
+        0x5748ab2f, 0xbc946e79, 0xc6a376d2, 0x6549c2c8, 0x530ff8ee, 0x468dde7d, 0xd5730a1d, 0x4cd04dc6,
+        0x2939bbdb, 0xa9ba4650, 0xac9526e8, 0xbe5ee304, 0xa1fad5f0, 0x6a2d519a, 0x63ef8ce2, 0x9a86ee22,
+        0xc089c2b8, 0x43242ef6, 0xa51e03aa, 0x9cf2d0a4, 0x83c061ba, 0x9be96a4d, 0x8fe51550, 0xba645bd6,
+        0x2826a2f9, 0xa73a3ae1, 0x4ba99586, 0xef5562e9, 0xc72fefd3, 0xf752f7da, 0x3f046f69, 0x77fa0a59,
+        0x80e4a915, 0x87b08601, 0x9b09e6ad, 0x3b3ee593, 0xe990fd5a, 0x9e34d797, 0x2cf0b7d9, 0x022b8b51,
+        0x96d5ac3a, 0x017da67d, 0xd1cf3ed6, 0x7c7d2d28, 0x1f9f25cf, 0xadf2b89b, 0x5ad6b472, 0x5a88f54c,
+        0xe029ac71, 0xe019a5e6, 0x47b0acfd, 0xed93fa9b, 0xe8d3c48d, 0x283b57cc, 0xf8d56629, 0x79132e28,
+        0x785f0191, 0xed756055, 0xf7960e44, 0xe3d35e8c, 0x15056dd4, 0x88f46dba, 0x03a16125, 0x0564f0bd,
+        0xc3eb9e15, 0x3c9057a2, 0x97271aec, 0xa93a072a, 0x1b3f6d9b, 0x1e6321f5, 0xf59c66fb, 0x26dcf319,
+        0x7533d928, 0xb155fdf5, 0x03563482, 0x8aba3cbb, 0x28517711, 0xc20ad9f8, 0xabcc5167, 0xccad925f,
+        0x4de81751, 0x3830dc8e, 0x379d5862, 0x9320f991, 0xea7a90c2, 0xfb3e7bce, 0x5121ce64, 0x774fbe32,
+        0xa8b6e37e, 0xc3293d46, 0x48de5369, 0x6413e680, 0xa2ae0810, 0xdd6db224, 0x69852dfd, 0x09072166,
+        0xb39a460a, 0x6445c0dd, 0x586cdecf, 0x1c20c8ae, 0x5bbef7dd, 0x1b588d40, 0xccd2017f, 0x6bb4e3bb,
+        0xdda26a7e, 0x3a59ff45, 0x3e350a44, 0xbcb4cdd5, 0x72eacea8, 0xfa6484bb, 0x8d6612ae, 0xbf3c6f47,
+        0xd29be463, 0x542f5d9e, 0xaec2771b, 0xf64e6370, 0x740e0d8d, 0xe75b1357, 0xf8721671, 0xaf537d5d,
+        0x4040cb08, 0x4eb4e2cc, 0x34d2466a, 0x0115af84, 0xe1b00428, 0x95983a1d, 0x06b89fb4, 0xce6ea048,
+        0x6f3f3b82, 0x3520ab82, 0x011a1d4b, 0x277227f8, 0x611560b1, 0xe7933fdc, 0xbb3a792b, 0x344525bd,
+        0xa08839e1, 0x51ce794b, 0x2f32c9b7, 0xa01fbac9, 0xe01cc87e, 0xbcc7d1f6, 0xcf0111c3, 0xa1e8aac7,
+        0x1a908749, 0xd44fbd9a, 0xd0dadecb, 0xd50ada38, 0x0339c32a, 0xc6913667, 0x8df9317c, 0xe0b12b4f,
+        0xf79e59b7, 0x43f5bb3a, 0xf2d519ff, 0x27d9459c, 0xbf97222c, 0x15e6fc2a, 0x0f91fc71, 0x9b941525,
+        0xfae59361, 0xceb69ceb, 0xc2a86459, 0x12baa8d1, 0xb6c1075e, 0xe3056a0c, 0x10d25065, 0xcb03a442,
+        0xe0ec6e0e, 0x1698db3b, 0x4c98a0be, 0x3278e964, 0x9f1f9532, 0xe0d392df, 0xd3a0342b, 0x8971f21e,
+        0x1b0a7441, 0x4ba3348c, 0xc5be7120, 0xc37632d8, 0xdf359f8d, 0x9b992f2e, 0xe60b6f47, 0x0fe3f11d,
+        0xe54cda54, 0x1edad891, 0xce6279cf, 0xcd3e7e6f, 0x1618b166, 0xfd2c1d05, 0x848fd2c5, 0xf6fb2299,
+        0xf523f357, 0xa6327623, 0x93a83531, 0x56cccd02, 0xacf08162, 0x5a75ebb5, 0x6e163697, 0x88d273cc,
+        0xde966292, 0x81b949d0, 0x4c50901b, 0x71c65614, 0xe6c6c7bd, 0x327a140a, 0x45e1d006, 0xc3f27b9a,
+        0xc9aa53fd, 0x62a80f00, 0xbb25bfe2, 0x35bdd2f6, 0x71126905, 0xb2040222, 0xb6cbcf7c, 0xcd769c2b,
+        0x53113ec0, 0x1640e3d3, 0x38abbd60, 0x2547adf0, 0xba38209c, 0xf746ce76, 0x77afa1c5, 0x20756060,
+        0x85cbfe4e, 0x8ae88dd8, 0x7aaaf9b0, 0x4cf9aa7e, 0x1948c25c, 0x02fb8a8c, 0x01c36ae4, 0xd6ebe1f9,
+        0x90d4f869, 0xa65cdea0, 0x3f09252d, 0xc208e69f, 0xb74e6132, 0xce77e25b, 0x578fdfe3, 0x3ac372e6
+    ];
+
+    /**
+     * P-Array consists of 18 32-bit subkeys
+     *
+     * @var array
+     */
+    private static $parray = [
+        0x243f6a88, 0x85a308d3, 0x13198a2e, 0x03707344, 0xa4093822, 0x299f31d0,
+        0x082efa98, 0xec4e6c89, 0x452821e6, 0x38d01377, 0xbe5466cf, 0x34e90c6c,
+        0xc0ac29b7, 0xc97c50dd, 0x3f84d5b5, 0xb5470917, 0x9216d5d9, 0x8979fb1b
+    ];
+
+    /**
+     * The BCTX-working Array
+     *
+     * Holds the expanded key [p] and the key-depended s-boxes [sb]
+     *
+     * @var array
+     */
+    private $bctx;
+
+    /**
+     * Holds the last used key
+     *
+     * @var array
+     */
+    private $kl;
+
+    /**
+     * The Key Length (in bytes)
+     * {@internal The max value is 256 / 8 = 32, the min value is 128 / 8 = 16.  Exists in conjunction with $Nk
+     *    because the encryption / decryption / key schedule creation requires this number and not $key_length.  We could
+     *    derive this from $key_length or vice versa, but that'd mean we'd have to do multiple shift operations, so in lieu
+     *    of that, we'll just precompute it once.}
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::setKeyLength()
+     * @var int
+     */
+    protected $key_length = 16;
+
+    /**
+     * Default Constructor.
+     *
+     * @param string $mode
+     * @throws \InvalidArgumentException if an invalid / unsupported mode is provided
+     */
+    public function __construct($mode)
+    {
+        parent::__construct($mode);
+
+        if ($this->mode == self::MODE_STREAM) {
+            throw new \InvalidArgumentException('Block ciphers cannot be ran in stream mode');
+        }
+    }
+
+    /**
+     * Sets the key length.
+     *
+     * Key lengths can be between 32 and 448 bits.
+     *
+     * @param int $length
+     */
+    public function setKeyLength($length)
+    {
+        if ($length < 32 || $length > 448) {
+                throw new \LengthException('Key size of ' . $length . ' bits is not supported by this algorithm. Only keys of sizes between 32 and 448 bits are supported');
+        }
+
+        $this->key_length = $length >> 3;
+
+        parent::setKeyLength($length);
+    }
+
+    /**
+     * Test for engine validity
+     *
+     * This is mainly just a wrapper to set things up for \phpseclib3\Crypt\Common\SymmetricKey::isValidEngine()
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::isValidEngine()
+     * @param int $engine
+     * @return bool
+     */
+    protected function isValidEngineHelper($engine)
+    {
+        if ($engine == self::ENGINE_OPENSSL) {
+            if ($this->key_length < 16) {
+                return false;
+            }
+            // quoting https://www.openssl.org/news/openssl-3.0-notes.html, OpenSSL 3.0.1
+            // "Moved all variations of the EVP ciphers CAST5, BF, IDEA, SEED, RC2, RC4, RC5, and DES to the legacy provider"
+            // in theory openssl_get_cipher_methods() should catch this but, on GitHub Actions, at least, it does not
+            if (defined('OPENSSL_VERSION_TEXT') && version_compare(preg_replace('#OpenSSL (\d+\.\d+\.\d+) .*#', '$1', OPENSSL_VERSION_TEXT), '3.0.1', '>=')) {
+                return false;
+            }
+            $this->cipher_name_openssl_ecb = 'bf-ecb';
+            $this->cipher_name_openssl = 'bf-' . $this->openssl_translate_mode();
+        }
+
+        return parent::isValidEngineHelper($engine);
+    }
+
+    /**
+     * Setup the key (expansion)
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::_setupKey()
+     */
+    protected function setupKey()
+    {
+        if (isset($this->kl['key']) && $this->key === $this->kl['key']) {
+            // already expanded
+            return;
+        }
+        $this->kl = ['key' => $this->key];
+
+        /* key-expanding p[] and S-Box building sb[] */
+        $this->bctx = [
+            'p'  => [],
+            'sb' => [
+                self::$sbox0,
+                self::$sbox1,
+                self::$sbox2,
+                self::$sbox3
+            ]
+        ];
+
+        // unpack binary string in unsigned chars
+        $key  = array_values(unpack('C*', $this->key));
+        $keyl = count($key);
+        // with bcrypt $keyl will always be 16 (because the key is the sha512 of the key you provide)
+        for ($j = 0, $i = 0; $i < 18; ++$i) {
+            // xor P1 with the first 32-bits of the key, xor P2 with the second 32-bits ...
+            for ($data = 0, $k = 0; $k < 4; ++$k) {
+                $data = ($data << 8) | $key[$j];
+                if (++$j >= $keyl) {
+                    $j = 0;
+                }
+            }
+            $this->bctx['p'][] = self::$parray[$i] ^ intval($data);
+        }
+
+        // encrypt the zero-string, replace P1 and P2 with the encrypted data,
+        // encrypt P3 and P4 with the new P1 and P2, do it with all P-array and subkeys
+        $data = "\0\0\0\0\0\0\0\0";
+        for ($i = 0; $i < 18; $i += 2) {
+            list($l, $r) = array_values(unpack('N*', $data = $this->encryptBlock($data)));
+            $this->bctx['p'][$i    ] = $l;
+            $this->bctx['p'][$i + 1] = $r;
+        }
+        for ($i = 0; $i < 4; ++$i) {
+            for ($j = 0; $j < 256; $j += 2) {
+                list($l, $r) = array_values(unpack('N*', $data = $this->encryptBlock($data)));
+                $this->bctx['sb'][$i][$j    ] = $l;
+                $this->bctx['sb'][$i][$j + 1] = $r;
+            }
+        }
+    }
+
+    /**
+     * Initialize Static Variables
+     */
+    protected static function initialize_static_variables()
+    {
+        if (is_float(self::$sbox2[0])) {
+            self::$sbox0 = array_map('intval', self::$sbox0);
+            self::$sbox1 = array_map('intval', self::$sbox1);
+            self::$sbox2 = array_map('intval', self::$sbox2);
+            self::$sbox3 = array_map('intval', self::$sbox3);
+            self::$parray = array_map('intval', self::$parray);
+        }
+
+        parent::initialize_static_variables();
+    }
+
+    /**
+     * bcrypt
+     *
+     * @param string $sha2pass
+     * @param string $sha2salt
+     * @access private
+     * @return string
+     */
+    private static function bcrypt_hash($sha2pass, $sha2salt)
+    {
+        $p = self::$parray;
+        $sbox0 = self::$sbox0;
+        $sbox1 = self::$sbox1;
+        $sbox2 = self::$sbox2;
+        $sbox3 = self::$sbox3;
+
+        $cdata = array_values(unpack('N*', 'OxychromaticBlowfishSwatDynamite'));
+        $sha2pass = array_values(unpack('N*', $sha2pass));
+        $sha2salt = array_values(unpack('N*', $sha2salt));
+
+        self::expandstate($sha2salt, $sha2pass, $sbox0, $sbox1, $sbox2, $sbox3, $p);
+        for ($i = 0; $i < 64; $i++) {
+            self::expand0state($sha2salt, $sbox0, $sbox1, $sbox2, $sbox3, $p);
+            self::expand0state($sha2pass, $sbox0, $sbox1, $sbox2, $sbox3, $p);
+        }
+
+        for ($i = 0; $i < 64; $i++) {
+            for ($j = 0; $j < 8; $j += 2) { // count($cdata) == 8
+                list($cdata[$j], $cdata[$j + 1]) = self::encryptBlockHelperFast($cdata[$j], $cdata[$j + 1], $sbox0, $sbox1, $sbox2, $sbox3, $p);
+            }
+        }
+
+        return pack('L*', ...$cdata);
+    }
+
+    /**
+     * Performs OpenSSH-style bcrypt
+     *
+     * @param string $pass
+     * @param string $salt
+     * @param int $keylen
+     * @param int $rounds
+     * @access public
+     * @return string
+     */
+    public static function bcrypt_pbkdf($pass, $salt, $keylen, $rounds)
+    {
+        self::initialize_static_variables();
+
+        if (PHP_INT_SIZE == 4) {
+            throw new \RuntimeException('bcrypt is far too slow to be practical on 32-bit versions of PHP');
+        }
+
+        $sha2pass = hash('sha512', $pass, true);
+        $results = [];
+        $count = 1;
+        while (32 * count($results) < $keylen) {
+            $countsalt = $salt . pack('N', $count++);
+            $sha2salt = hash('sha512', $countsalt, true);
+            $out = $tmpout = self::bcrypt_hash($sha2pass, $sha2salt);
+            for ($i = 1; $i < $rounds; $i++) {
+                $sha2salt = hash('sha512', $tmpout, true);
+                $tmpout = self::bcrypt_hash($sha2pass, $sha2salt);
+                $out ^= $tmpout;
+            }
+            $results[] = $out;
+        }
+        $output = '';
+        for ($i = 0; $i < 32; $i++) {
+            foreach ($results as $result) {
+                $output .= $result[$i];
+            }
+        }
+        return substr($output, 0, $keylen);
+    }
+
+    /**
+     * Key expansion without salt
+     *
+     * @access private
+     * @param int[] $key
+     * @param int[] $sbox0
+     * @param int[] $sbox1
+     * @param int[] $sbox2
+     * @param int[] $sbox3
+     * @param int[] $p
+     * @see self::_bcrypt_hash()
+     */
+    private static function expand0state(array $key, array &$sbox0, array &$sbox1, array &$sbox2, array &$sbox3, array &$p)
+    {
+        // expand0state is basically the same thing as this:
+        //return self::expandstate(array_fill(0, 16, 0), $key);
+        // but this separate function eliminates a bunch of XORs and array lookups
+
+        $p = [
+            $p[0] ^ $key[0],
+            $p[1] ^ $key[1],
+            $p[2] ^ $key[2],
+            $p[3] ^ $key[3],
+            $p[4] ^ $key[4],
+            $p[5] ^ $key[5],
+            $p[6] ^ $key[6],
+            $p[7] ^ $key[7],
+            $p[8] ^ $key[8],
+            $p[9] ^ $key[9],
+            $p[10] ^ $key[10],
+            $p[11] ^ $key[11],
+            $p[12] ^ $key[12],
+            $p[13] ^ $key[13],
+            $p[14] ^ $key[14],
+            $p[15] ^ $key[15],
+            $p[16] ^ $key[0],
+            $p[17] ^ $key[1]
+        ];
+
+        // @codingStandardsIgnoreStart
+        list( $p[0],  $p[1]) = self::encryptBlockHelperFast(     0,      0, $sbox0, $sbox1, $sbox2, $sbox3, $p);
+        list( $p[2],  $p[3]) = self::encryptBlockHelperFast($p[ 0], $p[ 1], $sbox0, $sbox1, $sbox2, $sbox3, $p);
+        list( $p[4],  $p[5]) = self::encryptBlockHelperFast($p[ 2], $p[ 3], $sbox0, $sbox1, $sbox2, $sbox3, $p);
+        list( $p[6],  $p[7]) = self::encryptBlockHelperFast($p[ 4], $p[ 5], $sbox0, $sbox1, $sbox2, $sbox3, $p);
+        list( $p[8],  $p[9]) = self::encryptBlockHelperFast($p[ 6], $p[ 7], $sbox0, $sbox1, $sbox2, $sbox3, $p);
+        list($p[10], $p[11]) = self::encryptBlockHelperFast($p[ 8], $p[ 9], $sbox0, $sbox1, $sbox2, $sbox3, $p);
+        list($p[12], $p[13]) = self::encryptBlockHelperFast($p[10], $p[11], $sbox0, $sbox1, $sbox2, $sbox3, $p);
+        list($p[14], $p[15]) = self::encryptBlockHelperFast($p[12], $p[13], $sbox0, $sbox1, $sbox2, $sbox3, $p);
+        list($p[16], $p[17]) = self::encryptBlockHelperFast($p[14], $p[15], $sbox0, $sbox1, $sbox2, $sbox3, $p);
+        // @codingStandardsIgnoreEnd
+
+        list($sbox0[0], $sbox0[1]) = self::encryptBlockHelperFast($p[16], $p[17], $sbox0, $sbox1, $sbox2, $sbox3, $p);
+        for ($i = 2; $i < 256; $i += 2) {
+            list($sbox0[$i], $sbox0[$i + 1]) = self::encryptBlockHelperFast($sbox0[$i - 2], $sbox0[$i - 1], $sbox0, $sbox1, $sbox2, $sbox3, $p);
+        }
+
+        list($sbox1[0], $sbox1[1]) = self::encryptBlockHelperFast($sbox0[254], $sbox0[255], $sbox0, $sbox1, $sbox2, $sbox3, $p);
+        for ($i = 2; $i < 256; $i += 2) {
+            list($sbox1[$i], $sbox1[$i + 1]) = self::encryptBlockHelperFast($sbox1[$i - 2], $sbox1[$i - 1], $sbox0, $sbox1, $sbox2, $sbox3, $p);
+        }
+
+        list($sbox2[0], $sbox2[1]) = self::encryptBlockHelperFast($sbox1[254], $sbox1[255], $sbox0, $sbox1, $sbox2, $sbox3, $p);
+        for ($i = 2; $i < 256; $i += 2) {
+            list($sbox2[$i], $sbox2[$i + 1]) = self::encryptBlockHelperFast($sbox2[$i - 2], $sbox2[$i - 1], $sbox0, $sbox1, $sbox2, $sbox3, $p);
+        }
+
+        list($sbox3[0], $sbox3[1]) = self::encryptBlockHelperFast($sbox2[254], $sbox2[255], $sbox0, $sbox1, $sbox2, $sbox3, $p);
+        for ($i = 2; $i < 256; $i += 2) {
+            list($sbox3[$i], $sbox3[$i + 1]) = self::encryptBlockHelperFast($sbox3[$i - 2], $sbox3[$i - 1], $sbox0, $sbox1, $sbox2, $sbox3, $p);
+        }
+    }
+
+    /**
+     * Key expansion with salt
+     *
+     * @access private
+     * @param int[] $data
+     * @param int[] $key
+     * @param int[] $sbox0
+     * @param int[] $sbox1
+     * @param int[] $sbox2
+     * @param int[] $sbox3
+     * @param int[] $p
+     * @see self::_bcrypt_hash()
+     */
+    private static function expandstate(array $data, array $key, array &$sbox0, array &$sbox1, array &$sbox2, array &$sbox3, array &$p)
+    {
+        $p = [
+            $p[0] ^ $key[0],
+            $p[1] ^ $key[1],
+            $p[2] ^ $key[2],
+            $p[3] ^ $key[3],
+            $p[4] ^ $key[4],
+            $p[5] ^ $key[5],
+            $p[6] ^ $key[6],
+            $p[7] ^ $key[7],
+            $p[8] ^ $key[8],
+            $p[9] ^ $key[9],
+            $p[10] ^ $key[10],
+            $p[11] ^ $key[11],
+            $p[12] ^ $key[12],
+            $p[13] ^ $key[13],
+            $p[14] ^ $key[14],
+            $p[15] ^ $key[15],
+            $p[16] ^ $key[0],
+            $p[17] ^ $key[1]
+        ];
+
+        // @codingStandardsIgnoreStart
+        list( $p[0],  $p[1]) = self::encryptBlockHelperFast($data[ 0]         , $data[ 1]         , $sbox0, $sbox1, $sbox2, $sbox3, $p);
+        list( $p[2],  $p[3]) = self::encryptBlockHelperFast($data[ 2] ^ $p[ 0], $data[ 3] ^ $p[ 1], $sbox0, $sbox1, $sbox2, $sbox3, $p);
+        list( $p[4],  $p[5]) = self::encryptBlockHelperFast($data[ 4] ^ $p[ 2], $data[ 5] ^ $p[ 3], $sbox0, $sbox1, $sbox2, $sbox3, $p);
+        list( $p[6],  $p[7]) = self::encryptBlockHelperFast($data[ 6] ^ $p[ 4], $data[ 7] ^ $p[ 5], $sbox0, $sbox1, $sbox2, $sbox3, $p);
+        list( $p[8],  $p[9]) = self::encryptBlockHelperFast($data[ 8] ^ $p[ 6], $data[ 9] ^ $p[ 7], $sbox0, $sbox1, $sbox2, $sbox3, $p);
+        list($p[10], $p[11]) = self::encryptBlockHelperFast($data[10] ^ $p[ 8], $data[11] ^ $p[ 9], $sbox0, $sbox1, $sbox2, $sbox3, $p);
+        list($p[12], $p[13]) = self::encryptBlockHelperFast($data[12] ^ $p[10], $data[13] ^ $p[11], $sbox0, $sbox1, $sbox2, $sbox3, $p);
+        list($p[14], $p[15]) = self::encryptBlockHelperFast($data[14] ^ $p[12], $data[15] ^ $p[13], $sbox0, $sbox1, $sbox2, $sbox3, $p);
+        list($p[16], $p[17]) = self::encryptBlockHelperFast($data[ 0] ^ $p[14], $data[ 1] ^ $p[15], $sbox0, $sbox1, $sbox2, $sbox3, $p);
+        // @codingStandardsIgnoreEnd
+
+        list($sbox0[0], $sbox0[1]) = self::encryptBlockHelperFast($data[2] ^ $p[16], $data[3] ^ $p[17], $sbox0, $sbox1, $sbox2, $sbox3, $p);
+        for ($i = 2, $j = 4; $i < 256; $i += 2, $j = ($j + 2) % 16) { // instead of 16 maybe count($data) would be better?
+            list($sbox0[$i], $sbox0[$i + 1]) = self::encryptBlockHelperFast($data[$j] ^ $sbox0[$i - 2], $data[$j + 1] ^ $sbox0[$i - 1], $sbox0, $sbox1, $sbox2, $sbox3, $p);
+        }
+
+        list($sbox1[0], $sbox1[1]) = self::encryptBlockHelperFast($data[2] ^ $sbox0[254], $data[3] ^ $sbox0[255], $sbox0, $sbox1, $sbox2, $sbox3, $p);
+        for ($i = 2, $j = 4; $i < 256; $i += 2, $j = ($j + 2) % 16) {
+            list($sbox1[$i], $sbox1[$i + 1]) = self::encryptBlockHelperFast($data[$j] ^ $sbox1[$i - 2], $data[$j + 1] ^ $sbox1[$i - 1], $sbox0, $sbox1, $sbox2, $sbox3, $p);
+        }
+
+        list($sbox2[0], $sbox2[1]) = self::encryptBlockHelperFast($data[2] ^ $sbox1[254], $data[3] ^ $sbox1[255], $sbox0, $sbox1, $sbox2, $sbox3, $p);
+        for ($i = 2, $j = 4; $i < 256; $i += 2, $j = ($j + 2) % 16) {
+            list($sbox2[$i], $sbox2[$i + 1]) = self::encryptBlockHelperFast($data[$j] ^ $sbox2[$i - 2], $data[$j + 1] ^ $sbox2[$i - 1], $sbox0, $sbox1, $sbox2, $sbox3, $p);
+        }
+
+        list($sbox3[0], $sbox3[1]) = self::encryptBlockHelperFast($data[2] ^ $sbox2[254], $data[3] ^ $sbox2[255], $sbox0, $sbox1, $sbox2, $sbox3, $p);
+        for ($i = 2, $j = 4; $i < 256; $i += 2, $j = ($j + 2) % 16) {
+            list($sbox3[$i], $sbox3[$i + 1]) = self::encryptBlockHelperFast($data[$j] ^ $sbox3[$i - 2], $data[$j + 1] ^ $sbox3[$i - 1], $sbox0, $sbox1, $sbox2, $sbox3, $p);
+        }
+    }
+
+    /**
+     * Encrypts a block
+     *
+     * @param string $in
+     * @return string
+     */
+    protected function encryptBlock($in)
+    {
+        $p = $this->bctx['p'];
+        // extract($this->bctx['sb'], EXTR_PREFIX_ALL, 'sb'); // slower
+        $sb_0 = $this->bctx['sb'][0];
+        $sb_1 = $this->bctx['sb'][1];
+        $sb_2 = $this->bctx['sb'][2];
+        $sb_3 = $this->bctx['sb'][3];
+
+        $in = unpack('N*', $in);
+        $l = $in[1];
+        $r = $in[2];
+
+        list($r, $l) = PHP_INT_SIZE == 4 ?
+            self::encryptBlockHelperSlow($l, $r, $sb_0, $sb_1, $sb_2, $sb_3, $p) :
+            self::encryptBlockHelperFast($l, $r, $sb_0, $sb_1, $sb_2, $sb_3, $p);
+
+        return pack("N*", $r, $l);
+    }
+
+    /**
+     * Fast helper function for block encryption
+     *
+     * @access private
+     * @param int $x0
+     * @param int $x1
+     * @param int[] $sbox0
+     * @param int[] $sbox1
+     * @param int[] $sbox2
+     * @param int[] $sbox3
+     * @param int[] $p
+     * @return int[]
+     */
+    private static function encryptBlockHelperFast($x0, $x1, array $sbox0, array $sbox1, array $sbox2, array $sbox3, array $p)
+    {
+        $x0 ^= $p[0];
+        $x1 ^= ((($sbox0[($x0 & 0xFF000000) >> 24] + $sbox1[($x0 & 0xFF0000) >> 16]) ^ $sbox2[($x0 & 0xFF00) >> 8]) + $sbox3[$x0 & 0xFF]) ^ $p[1];
+        $x0 ^= ((($sbox0[($x1 & 0xFF000000) >> 24] + $sbox1[($x1 & 0xFF0000) >> 16]) ^ $sbox2[($x1 & 0xFF00) >> 8]) + $sbox3[$x1 & 0xFF]) ^ $p[2];
+        $x1 ^= ((($sbox0[($x0 & 0xFF000000) >> 24] + $sbox1[($x0 & 0xFF0000) >> 16]) ^ $sbox2[($x0 & 0xFF00) >> 8]) + $sbox3[$x0 & 0xFF]) ^ $p[3];
+        $x0 ^= ((($sbox0[($x1 & 0xFF000000) >> 24] + $sbox1[($x1 & 0xFF0000) >> 16]) ^ $sbox2[($x1 & 0xFF00) >> 8]) + $sbox3[$x1 & 0xFF]) ^ $p[4];
+        $x1 ^= ((($sbox0[($x0 & 0xFF000000) >> 24] + $sbox1[($x0 & 0xFF0000) >> 16]) ^ $sbox2[($x0 & 0xFF00) >> 8]) + $sbox3[$x0 & 0xFF]) ^ $p[5];
+        $x0 ^= ((($sbox0[($x1 & 0xFF000000) >> 24] + $sbox1[($x1 & 0xFF0000) >> 16]) ^ $sbox2[($x1 & 0xFF00) >> 8]) + $sbox3[$x1 & 0xFF]) ^ $p[6];
+        $x1 ^= ((($sbox0[($x0 & 0xFF000000) >> 24] + $sbox1[($x0 & 0xFF0000) >> 16]) ^ $sbox2[($x0 & 0xFF00) >> 8]) + $sbox3[$x0 & 0xFF]) ^ $p[7];
+        $x0 ^= ((($sbox0[($x1 & 0xFF000000) >> 24] + $sbox1[($x1 & 0xFF0000) >> 16]) ^ $sbox2[($x1 & 0xFF00) >> 8]) + $sbox3[$x1 & 0xFF]) ^ $p[8];
+        $x1 ^= ((($sbox0[($x0 & 0xFF000000) >> 24] + $sbox1[($x0 & 0xFF0000) >> 16]) ^ $sbox2[($x0 & 0xFF00) >> 8]) + $sbox3[$x0 & 0xFF]) ^ $p[9];
+        $x0 ^= ((($sbox0[($x1 & 0xFF000000) >> 24] + $sbox1[($x1 & 0xFF0000) >> 16]) ^ $sbox2[($x1 & 0xFF00) >> 8]) + $sbox3[$x1 & 0xFF]) ^ $p[10];
+        $x1 ^= ((($sbox0[($x0 & 0xFF000000) >> 24] + $sbox1[($x0 & 0xFF0000) >> 16]) ^ $sbox2[($x0 & 0xFF00) >> 8]) + $sbox3[$x0 & 0xFF]) ^ $p[11];
+        $x0 ^= ((($sbox0[($x1 & 0xFF000000) >> 24] + $sbox1[($x1 & 0xFF0000) >> 16]) ^ $sbox2[($x1 & 0xFF00) >> 8]) + $sbox3[$x1 & 0xFF]) ^ $p[12];
+        $x1 ^= ((($sbox0[($x0 & 0xFF000000) >> 24] + $sbox1[($x0 & 0xFF0000) >> 16]) ^ $sbox2[($x0 & 0xFF00) >> 8]) + $sbox3[$x0 & 0xFF]) ^ $p[13];
+        $x0 ^= ((($sbox0[($x1 & 0xFF000000) >> 24] + $sbox1[($x1 & 0xFF0000) >> 16]) ^ $sbox2[($x1 & 0xFF00) >> 8]) + $sbox3[$x1 & 0xFF]) ^ $p[14];
+        $x1 ^= ((($sbox0[($x0 & 0xFF000000) >> 24] + $sbox1[($x0 & 0xFF0000) >> 16]) ^ $sbox2[($x0 & 0xFF00) >> 8]) + $sbox3[$x0 & 0xFF]) ^ $p[15];
+        $x0 ^= ((($sbox0[($x1 & 0xFF000000) >> 24] + $sbox1[($x1 & 0xFF0000) >> 16]) ^ $sbox2[($x1 & 0xFF00) >> 8]) + $sbox3[$x1 & 0xFF]) ^ $p[16];
+
+        return [$x1 & 0xFFFFFFFF ^ $p[17], $x0 & 0xFFFFFFFF];
+    }
+
+    /**
+     * Slow helper function for block encryption
+     *
+     * @access private
+     * @param int $x0
+     * @param int $x1
+     * @param int[] $sbox0
+     * @param int[] $sbox1
+     * @param int[] $sbox2
+     * @param int[] $sbox3
+     * @param int[] $p
+     * @return int[]
+     */
+    private static function encryptBlockHelperSlow($x0, $x1, array $sbox0, array $sbox1, array $sbox2, array $sbox3, array $p)
+    {
+        // -16777216 == intval(0xFF000000) on 32-bit PHP installs
+        $x0 ^= $p[0];
+        $x1 ^= self::safe_intval((self::safe_intval($sbox0[(($x0 & -16777216) >> 24) & 0xFF] + $sbox1[($x0 & 0xFF0000) >> 16]) ^ $sbox2[($x0 & 0xFF00) >> 8]) + $sbox3[$x0 & 0xFF]) ^ $p[1];
+        $x0 ^= self::safe_intval((self::safe_intval($sbox0[(($x1 & -16777216) >> 24) & 0xFF] + $sbox1[($x1 & 0xFF0000) >> 16]) ^ $sbox2[($x1 & 0xFF00) >> 8]) + $sbox3[$x1 & 0xFF]) ^ $p[2];
+        $x1 ^= self::safe_intval((self::safe_intval($sbox0[(($x0 & -16777216) >> 24) & 0xFF] + $sbox1[($x0 & 0xFF0000) >> 16]) ^ $sbox2[($x0 & 0xFF00) >> 8]) + $sbox3[$x0 & 0xFF]) ^ $p[3];
+        $x0 ^= self::safe_intval((self::safe_intval($sbox0[(($x1 & -16777216) >> 24) & 0xFF] + $sbox1[($x1 & 0xFF0000) >> 16]) ^ $sbox2[($x1 & 0xFF00) >> 8]) + $sbox3[$x1 & 0xFF]) ^ $p[4];
+        $x1 ^= self::safe_intval((self::safe_intval($sbox0[(($x0 & -16777216) >> 24) & 0xFF] + $sbox1[($x0 & 0xFF0000) >> 16]) ^ $sbox2[($x0 & 0xFF00) >> 8]) + $sbox3[$x0 & 0xFF]) ^ $p[5];
+        $x0 ^= self::safe_intval((self::safe_intval($sbox0[(($x1 & -16777216) >> 24) & 0xFF] + $sbox1[($x1 & 0xFF0000) >> 16]) ^ $sbox2[($x1 & 0xFF00) >> 8]) + $sbox3[$x1 & 0xFF]) ^ $p[6];
+        $x1 ^= self::safe_intval((self::safe_intval($sbox0[(($x0 & -16777216) >> 24) & 0xFF] + $sbox1[($x0 & 0xFF0000) >> 16]) ^ $sbox2[($x0 & 0xFF00) >> 8]) + $sbox3[$x0 & 0xFF]) ^ $p[7];
+        $x0 ^= self::safe_intval((self::safe_intval($sbox0[(($x1 & -16777216) >> 24) & 0xFF] + $sbox1[($x1 & 0xFF0000) >> 16]) ^ $sbox2[($x1 & 0xFF00) >> 8]) + $sbox3[$x1 & 0xFF]) ^ $p[8];
+        $x1 ^= self::safe_intval((self::safe_intval($sbox0[(($x0 & -16777216) >> 24) & 0xFF] + $sbox1[($x0 & 0xFF0000) >> 16]) ^ $sbox2[($x0 & 0xFF00) >> 8]) + $sbox3[$x0 & 0xFF]) ^ $p[9];
+        $x0 ^= self::safe_intval((self::safe_intval($sbox0[(($x1 & -16777216) >> 24) & 0xFF] + $sbox1[($x1 & 0xFF0000) >> 16]) ^ $sbox2[($x1 & 0xFF00) >> 8]) + $sbox3[$x1 & 0xFF]) ^ $p[10];
+        $x1 ^= self::safe_intval((self::safe_intval($sbox0[(($x0 & -16777216) >> 24) & 0xFF] + $sbox1[($x0 & 0xFF0000) >> 16]) ^ $sbox2[($x0 & 0xFF00) >> 8]) + $sbox3[$x0 & 0xFF]) ^ $p[11];
+        $x0 ^= self::safe_intval((self::safe_intval($sbox0[(($x1 & -16777216) >> 24) & 0xFF] + $sbox1[($x1 & 0xFF0000) >> 16]) ^ $sbox2[($x1 & 0xFF00) >> 8]) + $sbox3[$x1 & 0xFF]) ^ $p[12];
+        $x1 ^= self::safe_intval((self::safe_intval($sbox0[(($x0 & -16777216) >> 24) & 0xFF] + $sbox1[($x0 & 0xFF0000) >> 16]) ^ $sbox2[($x0 & 0xFF00) >> 8]) + $sbox3[$x0 & 0xFF]) ^ $p[13];
+        $x0 ^= self::safe_intval((self::safe_intval($sbox0[(($x1 & -16777216) >> 24) & 0xFF] + $sbox1[($x1 & 0xFF0000) >> 16]) ^ $sbox2[($x1 & 0xFF00) >> 8]) + $sbox3[$x1 & 0xFF]) ^ $p[14];
+        $x1 ^= self::safe_intval((self::safe_intval($sbox0[(($x0 & -16777216) >> 24) & 0xFF] + $sbox1[($x0 & 0xFF0000) >> 16]) ^ $sbox2[($x0 & 0xFF00) >> 8]) + $sbox3[$x0 & 0xFF]) ^ $p[15];
+        $x0 ^= self::safe_intval((self::safe_intval($sbox0[(($x1 & -16777216) >> 24) & 0xFF] + $sbox1[($x1 & 0xFF0000) >> 16]) ^ $sbox2[($x1 & 0xFF00) >> 8]) + $sbox3[$x1 & 0xFF]) ^ $p[16];
+
+        return [$x1 ^ $p[17], $x0];
+    }
+
+    /**
+     * Decrypts a block
+     *
+     * @param string $in
+     * @return string
+     */
+    protected function decryptBlock($in)
+    {
+        $p = $this->bctx['p'];
+        $sb_0 = $this->bctx['sb'][0];
+        $sb_1 = $this->bctx['sb'][1];
+        $sb_2 = $this->bctx['sb'][2];
+        $sb_3 = $this->bctx['sb'][3];
+
+        $in = unpack('N*', $in);
+        $l = $in[1];
+        $r = $in[2];
+
+        for ($i = 17; $i > 2; $i -= 2) {
+            $l ^= $p[$i];
+            $r ^= self::safe_intval((self::safe_intval($sb_0[$l >> 24 & 0xff] + $sb_1[$l >> 16 & 0xff]) ^
+                  $sb_2[$l >>  8 & 0xff]) +
+                  $sb_3[$l       & 0xff]);
+
+            $r ^= $p[$i - 1];
+            $l ^= self::safe_intval((self::safe_intval($sb_0[$r >> 24 & 0xff] + $sb_1[$r >> 16 & 0xff]) ^
+                  $sb_2[$r >>  8 & 0xff]) +
+                  $sb_3[$r       & 0xff]);
+        }
+        return pack('N*', $r ^ $p[0], $l ^ $p[1]);
+    }
+
+    /**
+     * Setup the performance-optimized function for de/encrypt()
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::_setupInlineCrypt()
+     */
+    protected function setupInlineCrypt()
+    {
+        $p = $this->bctx['p'];
+        $init_crypt = '
+            static $sb_0, $sb_1, $sb_2, $sb_3;
+            if (!$sb_0) {
+                $sb_0 = $this->bctx["sb"][0];
+                $sb_1 = $this->bctx["sb"][1];
+                $sb_2 = $this->bctx["sb"][2];
+                $sb_3 = $this->bctx["sb"][3];
+            }
+        ';
+
+        $safeint = self::safe_intval_inline();
+
+        // Generating encrypt code:
+        $encrypt_block = '
+            $in = unpack("N*", $in);
+            $l = $in[1];
+            $r = $in[2];
+        ';
+        for ($i = 0; $i < 16; $i += 2) {
+            $encrypt_block .= '
+                $l^= ' . $p[$i] . ';
+                $r^= ' . sprintf($safeint, '(' . sprintf($safeint, '$sb_0[$l >> 24 & 0xff] + $sb_1[$l >> 16 & 0xff]') . ' ^
+                      $sb_2[$l >>  8 & 0xff]) +
+                      $sb_3[$l       & 0xff]') . ';
+
+                $r^= ' . $p[$i + 1] . ';
+                $l^= ' . sprintf($safeint, '(' . sprintf($safeint, '$sb_0[$r >> 24 & 0xff] + $sb_1[$r >> 16 & 0xff]') . '  ^
+                      $sb_2[$r >>  8 & 0xff]) +
+                      $sb_3[$r       & 0xff]') . ';
+            ';
+        }
+        $encrypt_block .= '
+            $in = pack("N*",
+                $r ^ ' . $p[17] . ',
+                $l ^ ' . $p[16] . '
+            );
+        ';
+         // Generating decrypt code:
+        $decrypt_block = '
+            $in = unpack("N*", $in);
+            $l = $in[1];
+            $r = $in[2];
+        ';
+
+        for ($i = 17; $i > 2; $i -= 2) {
+            $decrypt_block .= '
+                $l^= ' . $p[$i] . ';
+                $r^= ' . sprintf($safeint, '(' . sprintf($safeint, '$sb_0[$l >> 24 & 0xff] + $sb_1[$l >> 16 & 0xff]') . ' ^
+                      $sb_2[$l >>  8 & 0xff]) +
+                      $sb_3[$l       & 0xff]') . ';
+
+                $r^= ' . $p[$i - 1] . ';
+                $l^= ' . sprintf($safeint, '(' . sprintf($safeint, '$sb_0[$r >> 24 & 0xff] + $sb_1[$r >> 16 & 0xff]') . ' ^
+                      $sb_2[$r >>  8 & 0xff]) +
+                      $sb_3[$r       & 0xff]') . ';
+            ';
+        }
+
+        $decrypt_block .= '
+            $in = pack("N*",
+                $r ^ ' . $p[0] . ',
+                $l ^ ' . $p[1] . '
+            );
+        ';
+
+        $this->inline_crypt = $this->createInlineCryptFunction(
+            [
+               'init_crypt'    => $init_crypt,
+               'init_encrypt'  => '',
+               'init_decrypt'  => '',
+               'encrypt_block' => $encrypt_block,
+               'decrypt_block' => $decrypt_block
+            ]
+        );
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/ChaCha20.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/ChaCha20.php
new file mode 100644
index 0000000..b2691b5
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/ChaCha20.php
@@ -0,0 +1,799 @@
+<?php
+
+/**
+ * Pure-PHP implementation of ChaCha20.
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2019 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt;
+
+use phpseclib3\Exception\BadDecryptionException;
+use phpseclib3\Exception\InsufficientSetupException;
+
+/**
+ * Pure-PHP implementation of ChaCha20.
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+class ChaCha20 extends Salsa20
+{
+    /**
+     * The OpenSSL specific name of the cipher
+     *
+     * @var string
+     */
+    protected $cipher_name_openssl = 'chacha20';
+
+    /**
+     * Test for engine validity
+     *
+     * This is mainly just a wrapper to set things up for \phpseclib3\Crypt\Common\SymmetricKey::isValidEngine()
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::__construct()
+     * @param int $engine
+     * @return bool
+     */
+    protected function isValidEngineHelper($engine)
+    {
+        switch ($engine) {
+            case self::ENGINE_LIBSODIUM:
+                // PHP 7.2.0 (30 Nov 2017) added support for libsodium
+
+                // we could probably make it so that if $this->counter == 0 then the first block would be done with either OpenSSL
+                // or PHP and then subsequent blocks would then be done with libsodium but idk - it's not a high priority atm
+
+                // we could also make it so that if $this->counter == 0 and $this->continuousBuffer then do the first string
+                // with libsodium and subsequent strings with openssl or pure-PHP but again not a high priority
+                return function_exists('sodium_crypto_aead_chacha20poly1305_ietf_encrypt') &&
+                       $this->key_length == 32 &&
+                       (($this->usePoly1305 && !isset($this->poly1305Key) && $this->counter == 0) || $this->counter == 1) &&
+                       !$this->continuousBuffer;
+            case self::ENGINE_OPENSSL:
+                // OpenSSL 1.1.0 (released 25 Aug 2016) added support for chacha20.
+                // PHP didn't support OpenSSL 1.1.0 until 7.0.19 (11 May 2017)
+
+                // if you attempt to provide openssl with a 128 bit key (as opposed to a 256 bit key) openssl will null
+                // pad the key to 256 bits and still use the expansion constant for 256-bit keys. the fact that
+                // openssl treats the IV as both the counter and nonce, however, let's us use openssl in continuous mode
+                // whereas libsodium does not
+                if ($this->key_length != 32) {
+                    return false;
+                }
+        }
+
+        return parent::isValidEngineHelper($engine);
+    }
+
+    /**
+     * Encrypts a message.
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::decrypt()
+     * @see self::crypt()
+     * @param string $plaintext
+     * @return string $ciphertext
+     */
+    public function encrypt($plaintext)
+    {
+        $this->setup();
+
+        if ($this->engine == self::ENGINE_LIBSODIUM) {
+            return $this->encrypt_with_libsodium($plaintext);
+        }
+
+        return parent::encrypt($plaintext);
+    }
+
+    /**
+     * Decrypts a message.
+     *
+     * $this->decrypt($this->encrypt($plaintext)) == $this->encrypt($this->encrypt($plaintext)).
+     * At least if the continuous buffer is disabled.
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::encrypt()
+     * @see self::crypt()
+     * @param string $ciphertext
+     * @return string $plaintext
+     */
+    public function decrypt($ciphertext)
+    {
+        $this->setup();
+
+        if ($this->engine == self::ENGINE_LIBSODIUM) {
+            return $this->decrypt_with_libsodium($ciphertext);
+        }
+
+        return parent::decrypt($ciphertext);
+    }
+
+    /**
+     * Encrypts a message with libsodium
+     *
+     * @see self::encrypt()
+     * @param string $plaintext
+     * @return string $text
+     */
+    private function encrypt_with_libsodium($plaintext)
+    {
+        $params = [$plaintext, $this->aad, $this->nonce, $this->key];
+        $ciphertext = strlen($this->nonce) == 8 ?
+            sodium_crypto_aead_chacha20poly1305_encrypt(...$params) :
+            sodium_crypto_aead_chacha20poly1305_ietf_encrypt(...$params);
+        if (!$this->usePoly1305) {
+            return substr($ciphertext, 0, strlen($plaintext));
+        }
+
+        $newciphertext = substr($ciphertext, 0, strlen($plaintext));
+
+        $this->newtag = $this->usingGeneratedPoly1305Key && strlen($this->nonce) == 12 ?
+            substr($ciphertext, strlen($plaintext)) :
+            $this->poly1305($newciphertext);
+
+        return $newciphertext;
+    }
+
+    /**
+     * Decrypts a message with libsodium
+     *
+     * @see self::decrypt()
+     * @param string $ciphertext
+     * @return string $text
+     */
+    private function decrypt_with_libsodium($ciphertext)
+    {
+        $params = [$ciphertext, $this->aad, $this->nonce, $this->key];
+
+        if (isset($this->poly1305Key)) {
+            if ($this->oldtag === false) {
+                throw new InsufficientSetupException('Authentication Tag has not been set');
+            }
+            if ($this->usingGeneratedPoly1305Key && strlen($this->nonce) == 12) {
+                $plaintext = sodium_crypto_aead_chacha20poly1305_ietf_decrypt(...$params);
+                $this->oldtag = false;
+                if ($plaintext === false) {
+                    throw new BadDecryptionException('Derived authentication tag and supplied authentication tag do not match');
+                }
+                return $plaintext;
+            }
+            $newtag = $this->poly1305($ciphertext);
+            if ($this->oldtag != substr($newtag, 0, strlen($this->oldtag))) {
+                $this->oldtag = false;
+                throw new BadDecryptionException('Derived authentication tag and supplied authentication tag do not match');
+            }
+            $this->oldtag = false;
+        }
+
+        $plaintext = strlen($this->nonce) == 8 ?
+            sodium_crypto_aead_chacha20poly1305_encrypt(...$params) :
+            sodium_crypto_aead_chacha20poly1305_ietf_encrypt(...$params);
+
+        return substr($plaintext, 0, strlen($ciphertext));
+    }
+
+    /**
+     * Sets the nonce.
+     *
+     * @param string $nonce
+     */
+    public function setNonce($nonce)
+    {
+        if (!is_string($nonce)) {
+            throw new \UnexpectedValueException('The nonce should be a string');
+        }
+
+        /*
+          from https://tools.ietf.org/html/rfc7539#page-7
+
+          "Note also that the original ChaCha had a 64-bit nonce and 64-bit
+           block count.  We have modified this here to be more consistent with
+           recommendations in Section 3.2 of [RFC5116]."
+         */
+        switch (strlen($nonce)) {
+            case 8:  // 64 bits
+            case 12: // 96 bits
+                break;
+            default:
+                throw new \LengthException('Nonce of size ' . strlen($nonce) . ' not supported by this algorithm. Only 64-bit nonces or 96-bit nonces are supported');
+        }
+
+        $this->nonce = $nonce;
+        $this->changed = true;
+        $this->setEngine();
+    }
+
+    /**
+     * Setup the self::ENGINE_INTERNAL $engine
+     *
+     * (re)init, if necessary, the internal cipher $engine
+     *
+     * _setup() will be called each time if $changed === true
+     * typically this happens when using one or more of following public methods:
+     *
+     * - setKey()
+     *
+     * - setNonce()
+     *
+     * - First run of encrypt() / decrypt() with no init-settings
+     *
+     * @see self::setKey()
+     * @see self::setNonce()
+     * @see self::disableContinuousBuffer()
+     */
+    protected function setup()
+    {
+        if (!$this->changed) {
+            return;
+        }
+
+        $this->enbuffer = $this->debuffer = ['ciphertext' => '', 'counter' => $this->counter];
+
+        $this->changed = $this->nonIVChanged = false;
+
+        if ($this->nonce === false) {
+            throw new InsufficientSetupException('No nonce has been defined');
+        }
+
+        if ($this->key === false) {
+            throw new InsufficientSetupException('No key has been defined');
+        }
+
+        if ($this->usePoly1305 && !isset($this->poly1305Key)) {
+            $this->usingGeneratedPoly1305Key = true;
+            if ($this->engine == self::ENGINE_LIBSODIUM) {
+                return;
+            }
+            $this->createPoly1305Key();
+        }
+
+        $key = $this->key;
+        if (strlen($key) == 16) {
+            $constant = 'expand 16-byte k';
+            $key .= $key;
+        } else {
+            $constant = 'expand 32-byte k';
+        }
+
+        $this->p1 = $constant . $key;
+        $this->p2 = $this->nonce;
+        if (strlen($this->nonce) == 8) {
+            $this->p2 = "\0\0\0\0" . $this->p2;
+        }
+    }
+
+    /**
+     * The quarterround function
+     *
+     * @param int $a
+     * @param int $b
+     * @param int $c
+     * @param int $d
+     */
+    protected static function quarterRound(&$a, &$b, &$c, &$d)
+    {
+        // in https://datatracker.ietf.org/doc/html/rfc7539#section-2.1 the addition,
+        // xor'ing and rotation are all on the same line so i'm keeping it on the same
+        // line here as well
+        // @codingStandardsIgnoreStart
+        $a+= $b; $d = self::leftRotate(intval($d) ^ intval($a), 16);
+        $c+= $d; $b = self::leftRotate(intval($b) ^ intval($c), 12);
+        $a+= $b; $d = self::leftRotate(intval($d) ^ intval($a), 8);
+        $c+= $d; $b = self::leftRotate(intval($b) ^ intval($c), 7);
+        // @codingStandardsIgnoreEnd
+    }
+
+    /**
+     * The doubleround function
+     *
+     * @param int $x0 (by reference)
+     * @param int $x1 (by reference)
+     * @param int $x2 (by reference)
+     * @param int $x3 (by reference)
+     * @param int $x4 (by reference)
+     * @param int $x5 (by reference)
+     * @param int $x6 (by reference)
+     * @param int $x7 (by reference)
+     * @param int $x8 (by reference)
+     * @param int $x9 (by reference)
+     * @param int $x10 (by reference)
+     * @param int $x11 (by reference)
+     * @param int $x12 (by reference)
+     * @param int $x13 (by reference)
+     * @param int $x14 (by reference)
+     * @param int $x15 (by reference)
+     */
+    protected static function doubleRound(&$x0, &$x1, &$x2, &$x3, &$x4, &$x5, &$x6, &$x7, &$x8, &$x9, &$x10, &$x11, &$x12, &$x13, &$x14, &$x15)
+    {
+        // columnRound
+        static::quarterRound($x0, $x4, $x8, $x12);
+        static::quarterRound($x1, $x5, $x9, $x13);
+        static::quarterRound($x2, $x6, $x10, $x14);
+        static::quarterRound($x3, $x7, $x11, $x15);
+        // rowRound
+        static::quarterRound($x0, $x5, $x10, $x15);
+        static::quarterRound($x1, $x6, $x11, $x12);
+        static::quarterRound($x2, $x7, $x8, $x13);
+        static::quarterRound($x3, $x4, $x9, $x14);
+    }
+
+    /**
+     * The Salsa20 hash function function
+     *
+     * On my laptop this loop unrolled / function dereferenced version of parent::salsa20 encrypts 1mb of text in
+     * 0.65s vs the 0.85s that it takes with the parent method.
+     *
+     * If we were free to assume that the host OS would always be 64-bits then the if condition in leftRotate could
+     * be eliminated and we could knock this done to 0.60s.
+     *
+     * For comparison purposes, RC4 takes 0.16s and AES in CTR mode with the Eval engine takes 0.48s.
+     * AES in CTR mode with the PHP engine takes 1.19s. Salsa20 / ChaCha20 do not benefit as much from the Eval
+     * approach due to the fact that there are a lot less variables to de-reference, fewer loops to unroll, etc
+     *
+     * @param string $x
+     */
+    protected static function salsa20($x)
+    {
+        list(, $x0, $x1, $x2, $x3, $x4, $x5, $x6, $x7, $x8, $x9, $x10, $x11, $x12, $x13, $x14, $x15) = unpack('V*', $x);
+        $z0 = $x0;
+        $z1 = $x1;
+        $z2 = $x2;
+        $z3 = $x3;
+        $z4 = $x4;
+        $z5 = $x5;
+        $z6 = $x6;
+        $z7 = $x7;
+        $z8 = $x8;
+        $z9 = $x9;
+        $z10 = $x10;
+        $z11 = $x11;
+        $z12 = $x12;
+        $z13 = $x13;
+        $z14 = $x14;
+        $z15 = $x15;
+
+        // @codingStandardsIgnoreStart
+        // columnRound
+        $x0+= $x4; $x12 = self::leftRotate(intval($x12) ^ intval($x0), 16);
+        $x8+= $x12; $x4 = self::leftRotate(intval($x4) ^ intval($x8), 12);
+        $x0+= $x4; $x12 = self::leftRotate(intval($x12) ^ intval($x0), 8);
+        $x8+= $x12; $x4 = self::leftRotate(intval($x4) ^ intval($x8), 7);
+
+        $x1+= $x5; $x13 = self::leftRotate(intval($x13) ^ intval($x1), 16);
+        $x9+= $x13; $x5 = self::leftRotate(intval($x5) ^ intval($x9), 12);
+        $x1+= $x5; $x13 = self::leftRotate(intval($x13) ^ intval($x1), 8);
+        $x9+= $x13; $x5 = self::leftRotate(intval($x5) ^ intval($x9), 7);
+
+        $x2+= $x6; $x14 = self::leftRotate(intval($x14) ^ intval($x2), 16);
+        $x10+= $x14; $x6 = self::leftRotate(intval($x6) ^ intval($x10), 12);
+        $x2+= $x6; $x14 = self::leftRotate(intval($x14) ^ intval($x2), 8);
+        $x10+= $x14; $x6 = self::leftRotate(intval($x6) ^ intval($x10), 7);
+
+        $x3+= $x7; $x15 = self::leftRotate(intval($x15) ^ intval($x3), 16);
+        $x11+= $x15; $x7 = self::leftRotate(intval($x7) ^ intval($x11), 12);
+        $x3+= $x7; $x15 = self::leftRotate(intval($x15) ^ intval($x3), 8);
+        $x11+= $x15; $x7 = self::leftRotate(intval($x7) ^ intval($x11), 7);
+
+        // rowRound
+        $x0+= $x5; $x15 = self::leftRotate(intval($x15) ^ intval($x0), 16);
+        $x10+= $x15; $x5 = self::leftRotate(intval($x5) ^ intval($x10), 12);
+        $x0+= $x5; $x15 = self::leftRotate(intval($x15) ^ intval($x0), 8);
+        $x10+= $x15; $x5 = self::leftRotate(intval($x5) ^ intval($x10), 7);
+
+        $x1+= $x6; $x12 = self::leftRotate(intval($x12) ^ intval($x1), 16);
+        $x11+= $x12; $x6 = self::leftRotate(intval($x6) ^ intval($x11), 12);
+        $x1+= $x6; $x12 = self::leftRotate(intval($x12) ^ intval($x1), 8);
+        $x11+= $x12; $x6 = self::leftRotate(intval($x6) ^ intval($x11), 7);
+
+        $x2+= $x7; $x13 = self::leftRotate(intval($x13) ^ intval($x2), 16);
+        $x8+= $x13; $x7 = self::leftRotate(intval($x7) ^ intval($x8), 12);
+        $x2+= $x7; $x13 = self::leftRotate(intval($x13) ^ intval($x2), 8);
+        $x8+= $x13; $x7 = self::leftRotate(intval($x7) ^ intval($x8), 7);
+
+        $x3+= $x4; $x14 = self::leftRotate(intval($x14) ^ intval($x3), 16);
+        $x9+= $x14; $x4 = self::leftRotate(intval($x4) ^ intval($x9), 12);
+        $x3+= $x4; $x14 = self::leftRotate(intval($x14) ^ intval($x3), 8);
+        $x9+= $x14; $x4 = self::leftRotate(intval($x4) ^ intval($x9), 7);
+
+        // columnRound
+        $x0+= $x4; $x12 = self::leftRotate(intval($x12) ^ intval($x0), 16);
+        $x8+= $x12; $x4 = self::leftRotate(intval($x4) ^ intval($x8), 12);
+        $x0+= $x4; $x12 = self::leftRotate(intval($x12) ^ intval($x0), 8);
+        $x8+= $x12; $x4 = self::leftRotate(intval($x4) ^ intval($x8), 7);
+
+        $x1+= $x5; $x13 = self::leftRotate(intval($x13) ^ intval($x1), 16);
+        $x9+= $x13; $x5 = self::leftRotate(intval($x5) ^ intval($x9), 12);
+        $x1+= $x5; $x13 = self::leftRotate(intval($x13) ^ intval($x1), 8);
+        $x9+= $x13; $x5 = self::leftRotate(intval($x5) ^ intval($x9), 7);
+
+        $x2+= $x6; $x14 = self::leftRotate(intval($x14) ^ intval($x2), 16);
+        $x10+= $x14; $x6 = self::leftRotate(intval($x6) ^ intval($x10), 12);
+        $x2+= $x6; $x14 = self::leftRotate(intval($x14) ^ intval($x2), 8);
+        $x10+= $x14; $x6 = self::leftRotate(intval($x6) ^ intval($x10), 7);
+
+        $x3+= $x7; $x15 = self::leftRotate(intval($x15) ^ intval($x3), 16);
+        $x11+= $x15; $x7 = self::leftRotate(intval($x7) ^ intval($x11), 12);
+        $x3+= $x7; $x15 = self::leftRotate(intval($x15) ^ intval($x3), 8);
+        $x11+= $x15; $x7 = self::leftRotate(intval($x7) ^ intval($x11), 7);
+
+        // rowRound
+        $x0+= $x5; $x15 = self::leftRotate(intval($x15) ^ intval($x0), 16);
+        $x10+= $x15; $x5 = self::leftRotate(intval($x5) ^ intval($x10), 12);
+        $x0+= $x5; $x15 = self::leftRotate(intval($x15) ^ intval($x0), 8);
+        $x10+= $x15; $x5 = self::leftRotate(intval($x5) ^ intval($x10), 7);
+
+        $x1+= $x6; $x12 = self::leftRotate(intval($x12) ^ intval($x1), 16);
+        $x11+= $x12; $x6 = self::leftRotate(intval($x6) ^ intval($x11), 12);
+        $x1+= $x6; $x12 = self::leftRotate(intval($x12) ^ intval($x1), 8);
+        $x11+= $x12; $x6 = self::leftRotate(intval($x6) ^ intval($x11), 7);
+
+        $x2+= $x7; $x13 = self::leftRotate(intval($x13) ^ intval($x2), 16);
+        $x8+= $x13; $x7 = self::leftRotate(intval($x7) ^ intval($x8), 12);
+        $x2+= $x7; $x13 = self::leftRotate(intval($x13) ^ intval($x2), 8);
+        $x8+= $x13; $x7 = self::leftRotate(intval($x7) ^ intval($x8), 7);
+
+        $x3+= $x4; $x14 = self::leftRotate(intval($x14) ^ intval($x3), 16);
+        $x9+= $x14; $x4 = self::leftRotate(intval($x4) ^ intval($x9), 12);
+        $x3+= $x4; $x14 = self::leftRotate(intval($x14) ^ intval($x3), 8);
+        $x9+= $x14; $x4 = self::leftRotate(intval($x4) ^ intval($x9), 7);
+
+        // columnRound
+        $x0+= $x4; $x12 = self::leftRotate(intval($x12) ^ intval($x0), 16);
+        $x8+= $x12; $x4 = self::leftRotate(intval($x4) ^ intval($x8), 12);
+        $x0+= $x4; $x12 = self::leftRotate(intval($x12) ^ intval($x0), 8);
+        $x8+= $x12; $x4 = self::leftRotate(intval($x4) ^ intval($x8), 7);
+
+        $x1+= $x5; $x13 = self::leftRotate(intval($x13) ^ intval($x1), 16);
+        $x9+= $x13; $x5 = self::leftRotate(intval($x5) ^ intval($x9), 12);
+        $x1+= $x5; $x13 = self::leftRotate(intval($x13) ^ intval($x1), 8);
+        $x9+= $x13; $x5 = self::leftRotate(intval($x5) ^ intval($x9), 7);
+
+        $x2+= $x6; $x14 = self::leftRotate(intval($x14) ^ intval($x2), 16);
+        $x10+= $x14; $x6 = self::leftRotate(intval($x6) ^ intval($x10), 12);
+        $x2+= $x6; $x14 = self::leftRotate(intval($x14) ^ intval($x2), 8);
+        $x10+= $x14; $x6 = self::leftRotate(intval($x6) ^ intval($x10), 7);
+
+        $x3+= $x7; $x15 = self::leftRotate(intval($x15) ^ intval($x3), 16);
+        $x11+= $x15; $x7 = self::leftRotate(intval($x7) ^ intval($x11), 12);
+        $x3+= $x7; $x15 = self::leftRotate(intval($x15) ^ intval($x3), 8);
+        $x11+= $x15; $x7 = self::leftRotate(intval($x7) ^ intval($x11), 7);
+
+        // rowRound
+        $x0+= $x5; $x15 = self::leftRotate(intval($x15) ^ intval($x0), 16);
+        $x10+= $x15; $x5 = self::leftRotate(intval($x5) ^ intval($x10), 12);
+        $x0+= $x5; $x15 = self::leftRotate(intval($x15) ^ intval($x0), 8);
+        $x10+= $x15; $x5 = self::leftRotate(intval($x5) ^ intval($x10), 7);
+
+        $x1+= $x6; $x12 = self::leftRotate(intval($x12) ^ intval($x1), 16);
+        $x11+= $x12; $x6 = self::leftRotate(intval($x6) ^ intval($x11), 12);
+        $x1+= $x6; $x12 = self::leftRotate(intval($x12) ^ intval($x1), 8);
+        $x11+= $x12; $x6 = self::leftRotate(intval($x6) ^ intval($x11), 7);
+
+        $x2+= $x7; $x13 = self::leftRotate(intval($x13) ^ intval($x2), 16);
+        $x8+= $x13; $x7 = self::leftRotate(intval($x7) ^ intval($x8), 12);
+        $x2+= $x7; $x13 = self::leftRotate(intval($x13) ^ intval($x2), 8);
+        $x8+= $x13; $x7 = self::leftRotate(intval($x7) ^ intval($x8), 7);
+
+        $x3+= $x4; $x14 = self::leftRotate(intval($x14) ^ intval($x3), 16);
+        $x9+= $x14; $x4 = self::leftRotate(intval($x4) ^ intval($x9), 12);
+        $x3+= $x4; $x14 = self::leftRotate(intval($x14) ^ intval($x3), 8);
+        $x9+= $x14; $x4 = self::leftRotate(intval($x4) ^ intval($x9), 7);
+
+        // columnRound
+        $x0+= $x4; $x12 = self::leftRotate(intval($x12) ^ intval($x0), 16);
+        $x8+= $x12; $x4 = self::leftRotate(intval($x4) ^ intval($x8), 12);
+        $x0+= $x4; $x12 = self::leftRotate(intval($x12) ^ intval($x0), 8);
+        $x8+= $x12; $x4 = self::leftRotate(intval($x4) ^ intval($x8), 7);
+
+        $x1+= $x5; $x13 = self::leftRotate(intval($x13) ^ intval($x1), 16);
+        $x9+= $x13; $x5 = self::leftRotate(intval($x5) ^ intval($x9), 12);
+        $x1+= $x5; $x13 = self::leftRotate(intval($x13) ^ intval($x1), 8);
+        $x9+= $x13; $x5 = self::leftRotate(intval($x5) ^ intval($x9), 7);
+
+        $x2+= $x6; $x14 = self::leftRotate(intval($x14) ^ intval($x2), 16);
+        $x10+= $x14; $x6 = self::leftRotate(intval($x6) ^ intval($x10), 12);
+        $x2+= $x6; $x14 = self::leftRotate(intval($x14) ^ intval($x2), 8);
+        $x10+= $x14; $x6 = self::leftRotate(intval($x6) ^ intval($x10), 7);
+
+        $x3+= $x7; $x15 = self::leftRotate(intval($x15) ^ intval($x3), 16);
+        $x11+= $x15; $x7 = self::leftRotate(intval($x7) ^ intval($x11), 12);
+        $x3+= $x7; $x15 = self::leftRotate(intval($x15) ^ intval($x3), 8);
+        $x11+= $x15; $x7 = self::leftRotate(intval($x7) ^ intval($x11), 7);
+
+        // rowRound
+        $x0+= $x5; $x15 = self::leftRotate(intval($x15) ^ intval($x0), 16);
+        $x10+= $x15; $x5 = self::leftRotate(intval($x5) ^ intval($x10), 12);
+        $x0+= $x5; $x15 = self::leftRotate(intval($x15) ^ intval($x0), 8);
+        $x10+= $x15; $x5 = self::leftRotate(intval($x5) ^ intval($x10), 7);
+
+        $x1+= $x6; $x12 = self::leftRotate(intval($x12) ^ intval($x1), 16);
+        $x11+= $x12; $x6 = self::leftRotate(intval($x6) ^ intval($x11), 12);
+        $x1+= $x6; $x12 = self::leftRotate(intval($x12) ^ intval($x1), 8);
+        $x11+= $x12; $x6 = self::leftRotate(intval($x6) ^ intval($x11), 7);
+
+        $x2+= $x7; $x13 = self::leftRotate(intval($x13) ^ intval($x2), 16);
+        $x8+= $x13; $x7 = self::leftRotate(intval($x7) ^ intval($x8), 12);
+        $x2+= $x7; $x13 = self::leftRotate(intval($x13) ^ intval($x2), 8);
+        $x8+= $x13; $x7 = self::leftRotate(intval($x7) ^ intval($x8), 7);
+
+        $x3+= $x4; $x14 = self::leftRotate(intval($x14) ^ intval($x3), 16);
+        $x9+= $x14; $x4 = self::leftRotate(intval($x4) ^ intval($x9), 12);
+        $x3+= $x4; $x14 = self::leftRotate(intval($x14) ^ intval($x3), 8);
+        $x9+= $x14; $x4 = self::leftRotate(intval($x4) ^ intval($x9), 7);
+
+        // columnRound
+        $x0+= $x4; $x12 = self::leftRotate(intval($x12) ^ intval($x0), 16);
+        $x8+= $x12; $x4 = self::leftRotate(intval($x4) ^ intval($x8), 12);
+        $x0+= $x4; $x12 = self::leftRotate(intval($x12) ^ intval($x0), 8);
+        $x8+= $x12; $x4 = self::leftRotate(intval($x4) ^ intval($x8), 7);
+
+        $x1+= $x5; $x13 = self::leftRotate(intval($x13) ^ intval($x1), 16);
+        $x9+= $x13; $x5 = self::leftRotate(intval($x5) ^ intval($x9), 12);
+        $x1+= $x5; $x13 = self::leftRotate(intval($x13) ^ intval($x1), 8);
+        $x9+= $x13; $x5 = self::leftRotate(intval($x5) ^ intval($x9), 7);
+
+        $x2+= $x6; $x14 = self::leftRotate(intval($x14) ^ intval($x2), 16);
+        $x10+= $x14; $x6 = self::leftRotate(intval($x6) ^ intval($x10), 12);
+        $x2+= $x6; $x14 = self::leftRotate(intval($x14) ^ intval($x2), 8);
+        $x10+= $x14; $x6 = self::leftRotate(intval($x6) ^ intval($x10), 7);
+
+        $x3+= $x7; $x15 = self::leftRotate(intval($x15) ^ intval($x3), 16);
+        $x11+= $x15; $x7 = self::leftRotate(intval($x7) ^ intval($x11), 12);
+        $x3+= $x7; $x15 = self::leftRotate(intval($x15) ^ intval($x3), 8);
+        $x11+= $x15; $x7 = self::leftRotate(intval($x7) ^ intval($x11), 7);
+
+        // rowRound
+        $x0+= $x5; $x15 = self::leftRotate(intval($x15) ^ intval($x0), 16);
+        $x10+= $x15; $x5 = self::leftRotate(intval($x5) ^ intval($x10), 12);
+        $x0+= $x5; $x15 = self::leftRotate(intval($x15) ^ intval($x0), 8);
+        $x10+= $x15; $x5 = self::leftRotate(intval($x5) ^ intval($x10), 7);
+
+        $x1+= $x6; $x12 = self::leftRotate(intval($x12) ^ intval($x1), 16);
+        $x11+= $x12; $x6 = self::leftRotate(intval($x6) ^ intval($x11), 12);
+        $x1+= $x6; $x12 = self::leftRotate(intval($x12) ^ intval($x1), 8);
+        $x11+= $x12; $x6 = self::leftRotate(intval($x6) ^ intval($x11), 7);
+
+        $x2+= $x7; $x13 = self::leftRotate(intval($x13) ^ intval($x2), 16);
+        $x8+= $x13; $x7 = self::leftRotate(intval($x7) ^ intval($x8), 12);
+        $x2+= $x7; $x13 = self::leftRotate(intval($x13) ^ intval($x2), 8);
+        $x8+= $x13; $x7 = self::leftRotate(intval($x7) ^ intval($x8), 7);
+
+        $x3+= $x4; $x14 = self::leftRotate(intval($x14) ^ intval($x3), 16);
+        $x9+= $x14; $x4 = self::leftRotate(intval($x4) ^ intval($x9), 12);
+        $x3+= $x4; $x14 = self::leftRotate(intval($x14) ^ intval($x3), 8);
+        $x9+= $x14; $x4 = self::leftRotate(intval($x4) ^ intval($x9), 7);
+
+        // columnRound
+        $x0+= $x4; $x12 = self::leftRotate(intval($x12) ^ intval($x0), 16);
+        $x8+= $x12; $x4 = self::leftRotate(intval($x4) ^ intval($x8), 12);
+        $x0+= $x4; $x12 = self::leftRotate(intval($x12) ^ intval($x0), 8);
+        $x8+= $x12; $x4 = self::leftRotate(intval($x4) ^ intval($x8), 7);
+
+        $x1+= $x5; $x13 = self::leftRotate(intval($x13) ^ intval($x1), 16);
+        $x9+= $x13; $x5 = self::leftRotate(intval($x5) ^ intval($x9), 12);
+        $x1+= $x5; $x13 = self::leftRotate(intval($x13) ^ intval($x1), 8);
+        $x9+= $x13; $x5 = self::leftRotate(intval($x5) ^ intval($x9), 7);
+
+        $x2+= $x6; $x14 = self::leftRotate(intval($x14) ^ intval($x2), 16);
+        $x10+= $x14; $x6 = self::leftRotate(intval($x6) ^ intval($x10), 12);
+        $x2+= $x6; $x14 = self::leftRotate(intval($x14) ^ intval($x2), 8);
+        $x10+= $x14; $x6 = self::leftRotate(intval($x6) ^ intval($x10), 7);
+
+        $x3+= $x7; $x15 = self::leftRotate(intval($x15) ^ intval($x3), 16);
+        $x11+= $x15; $x7 = self::leftRotate(intval($x7) ^ intval($x11), 12);
+        $x3+= $x7; $x15 = self::leftRotate(intval($x15) ^ intval($x3), 8);
+        $x11+= $x15; $x7 = self::leftRotate(intval($x7) ^ intval($x11), 7);
+
+        // rowRound
+        $x0+= $x5; $x15 = self::leftRotate(intval($x15) ^ intval($x0), 16);
+        $x10+= $x15; $x5 = self::leftRotate(intval($x5) ^ intval($x10), 12);
+        $x0+= $x5; $x15 = self::leftRotate(intval($x15) ^ intval($x0), 8);
+        $x10+= $x15; $x5 = self::leftRotate(intval($x5) ^ intval($x10), 7);
+
+        $x1+= $x6; $x12 = self::leftRotate(intval($x12) ^ intval($x1), 16);
+        $x11+= $x12; $x6 = self::leftRotate(intval($x6) ^ intval($x11), 12);
+        $x1+= $x6; $x12 = self::leftRotate(intval($x12) ^ intval($x1), 8);
+        $x11+= $x12; $x6 = self::leftRotate(intval($x6) ^ intval($x11), 7);
+
+        $x2+= $x7; $x13 = self::leftRotate(intval($x13) ^ intval($x2), 16);
+        $x8+= $x13; $x7 = self::leftRotate(intval($x7) ^ intval($x8), 12);
+        $x2+= $x7; $x13 = self::leftRotate(intval($x13) ^ intval($x2), 8);
+        $x8+= $x13; $x7 = self::leftRotate(intval($x7) ^ intval($x8), 7);
+
+        $x3+= $x4; $x14 = self::leftRotate(intval($x14) ^ intval($x3), 16);
+        $x9+= $x14; $x4 = self::leftRotate(intval($x4) ^ intval($x9), 12);
+        $x3+= $x4; $x14 = self::leftRotate(intval($x14) ^ intval($x3), 8);
+        $x9+= $x14; $x4 = self::leftRotate(intval($x4) ^ intval($x9), 7);
+
+        // columnRound
+        $x0+= $x4; $x12 = self::leftRotate(intval($x12) ^ intval($x0), 16);
+        $x8+= $x12; $x4 = self::leftRotate(intval($x4) ^ intval($x8), 12);
+        $x0+= $x4; $x12 = self::leftRotate(intval($x12) ^ intval($x0), 8);
+        $x8+= $x12; $x4 = self::leftRotate(intval($x4) ^ intval($x8), 7);
+
+        $x1+= $x5; $x13 = self::leftRotate(intval($x13) ^ intval($x1), 16);
+        $x9+= $x13; $x5 = self::leftRotate(intval($x5) ^ intval($x9), 12);
+        $x1+= $x5; $x13 = self::leftRotate(intval($x13) ^ intval($x1), 8);
+        $x9+= $x13; $x5 = self::leftRotate(intval($x5) ^ intval($x9), 7);
+
+        $x2+= $x6; $x14 = self::leftRotate(intval($x14) ^ intval($x2), 16);
+        $x10+= $x14; $x6 = self::leftRotate(intval($x6) ^ intval($x10), 12);
+        $x2+= $x6; $x14 = self::leftRotate(intval($x14) ^ intval($x2), 8);
+        $x10+= $x14; $x6 = self::leftRotate(intval($x6) ^ intval($x10), 7);
+
+        $x3+= $x7; $x15 = self::leftRotate(intval($x15) ^ intval($x3), 16);
+        $x11+= $x15; $x7 = self::leftRotate(intval($x7) ^ intval($x11), 12);
+        $x3+= $x7; $x15 = self::leftRotate(intval($x15) ^ intval($x3), 8);
+        $x11+= $x15; $x7 = self::leftRotate(intval($x7) ^ intval($x11), 7);
+
+        // rowRound
+        $x0+= $x5; $x15 = self::leftRotate(intval($x15) ^ intval($x0), 16);
+        $x10+= $x15; $x5 = self::leftRotate(intval($x5) ^ intval($x10), 12);
+        $x0+= $x5; $x15 = self::leftRotate(intval($x15) ^ intval($x0), 8);
+        $x10+= $x15; $x5 = self::leftRotate(intval($x5) ^ intval($x10), 7);
+
+        $x1+= $x6; $x12 = self::leftRotate(intval($x12) ^ intval($x1), 16);
+        $x11+= $x12; $x6 = self::leftRotate(intval($x6) ^ intval($x11), 12);
+        $x1+= $x6; $x12 = self::leftRotate(intval($x12) ^ intval($x1), 8);
+        $x11+= $x12; $x6 = self::leftRotate(intval($x6) ^ intval($x11), 7);
+
+        $x2+= $x7; $x13 = self::leftRotate(intval($x13) ^ intval($x2), 16);
+        $x8+= $x13; $x7 = self::leftRotate(intval($x7) ^ intval($x8), 12);
+        $x2+= $x7; $x13 = self::leftRotate(intval($x13) ^ intval($x2), 8);
+        $x8+= $x13; $x7 = self::leftRotate(intval($x7) ^ intval($x8), 7);
+
+        $x3+= $x4; $x14 = self::leftRotate(intval($x14) ^ intval($x3), 16);
+        $x9+= $x14; $x4 = self::leftRotate(intval($x4) ^ intval($x9), 12);
+        $x3+= $x4; $x14 = self::leftRotate(intval($x14) ^ intval($x3), 8);
+        $x9+= $x14; $x4 = self::leftRotate(intval($x4) ^ intval($x9), 7);
+
+        // columnRound
+        $x0+= $x4; $x12 = self::leftRotate(intval($x12) ^ intval($x0), 16);
+        $x8+= $x12; $x4 = self::leftRotate(intval($x4) ^ intval($x8), 12);
+        $x0+= $x4; $x12 = self::leftRotate(intval($x12) ^ intval($x0), 8);
+        $x8+= $x12; $x4 = self::leftRotate(intval($x4) ^ intval($x8), 7);
+
+        $x1+= $x5; $x13 = self::leftRotate(intval($x13) ^ intval($x1), 16);
+        $x9+= $x13; $x5 = self::leftRotate(intval($x5) ^ intval($x9), 12);
+        $x1+= $x5; $x13 = self::leftRotate(intval($x13) ^ intval($x1), 8);
+        $x9+= $x13; $x5 = self::leftRotate(intval($x5) ^ intval($x9), 7);
+
+        $x2+= $x6; $x14 = self::leftRotate(intval($x14) ^ intval($x2), 16);
+        $x10+= $x14; $x6 = self::leftRotate(intval($x6) ^ intval($x10), 12);
+        $x2+= $x6; $x14 = self::leftRotate(intval($x14) ^ intval($x2), 8);
+        $x10+= $x14; $x6 = self::leftRotate(intval($x6) ^ intval($x10), 7);
+
+        $x3+= $x7; $x15 = self::leftRotate(intval($x15) ^ intval($x3), 16);
+        $x11+= $x15; $x7 = self::leftRotate(intval($x7) ^ intval($x11), 12);
+        $x3+= $x7; $x15 = self::leftRotate(intval($x15) ^ intval($x3), 8);
+        $x11+= $x15; $x7 = self::leftRotate(intval($x7) ^ intval($x11), 7);
+
+        // rowRound
+        $x0+= $x5; $x15 = self::leftRotate(intval($x15) ^ intval($x0), 16);
+        $x10+= $x15; $x5 = self::leftRotate(intval($x5) ^ intval($x10), 12);
+        $x0+= $x5; $x15 = self::leftRotate(intval($x15) ^ intval($x0), 8);
+        $x10+= $x15; $x5 = self::leftRotate(intval($x5) ^ intval($x10), 7);
+
+        $x1+= $x6; $x12 = self::leftRotate(intval($x12) ^ intval($x1), 16);
+        $x11+= $x12; $x6 = self::leftRotate(intval($x6) ^ intval($x11), 12);
+        $x1+= $x6; $x12 = self::leftRotate(intval($x12) ^ intval($x1), 8);
+        $x11+= $x12; $x6 = self::leftRotate(intval($x6) ^ intval($x11), 7);
+
+        $x2+= $x7; $x13 = self::leftRotate(intval($x13) ^ intval($x2), 16);
+        $x8+= $x13; $x7 = self::leftRotate(intval($x7) ^ intval($x8), 12);
+        $x2+= $x7; $x13 = self::leftRotate(intval($x13) ^ intval($x2), 8);
+        $x8+= $x13; $x7 = self::leftRotate(intval($x7) ^ intval($x8), 7);
+
+        $x3+= $x4; $x14 = self::leftRotate(intval($x14) ^ intval($x3), 16);
+        $x9+= $x14; $x4 = self::leftRotate(intval($x4) ^ intval($x9), 12);
+        $x3+= $x4; $x14 = self::leftRotate(intval($x14) ^ intval($x3), 8);
+        $x9+= $x14; $x4 = self::leftRotate(intval($x4) ^ intval($x9), 7);
+
+        // columnRound
+        $x0+= $x4; $x12 = self::leftRotate(intval($x12) ^ intval($x0), 16);
+        $x8+= $x12; $x4 = self::leftRotate(intval($x4) ^ intval($x8), 12);
+        $x0+= $x4; $x12 = self::leftRotate(intval($x12) ^ intval($x0), 8);
+        $x8+= $x12; $x4 = self::leftRotate(intval($x4) ^ intval($x8), 7);
+
+        $x1+= $x5; $x13 = self::leftRotate(intval($x13) ^ intval($x1), 16);
+        $x9+= $x13; $x5 = self::leftRotate(intval($x5) ^ intval($x9), 12);
+        $x1+= $x5; $x13 = self::leftRotate(intval($x13) ^ intval($x1), 8);
+        $x9+= $x13; $x5 = self::leftRotate(intval($x5) ^ intval($x9), 7);
+
+        $x2+= $x6; $x14 = self::leftRotate(intval($x14) ^ intval($x2), 16);
+        $x10+= $x14; $x6 = self::leftRotate(intval($x6) ^ intval($x10), 12);
+        $x2+= $x6; $x14 = self::leftRotate(intval($x14) ^ intval($x2), 8);
+        $x10+= $x14; $x6 = self::leftRotate(intval($x6) ^ intval($x10), 7);
+
+        $x3+= $x7; $x15 = self::leftRotate(intval($x15) ^ intval($x3), 16);
+        $x11+= $x15; $x7 = self::leftRotate(intval($x7) ^ intval($x11), 12);
+        $x3+= $x7; $x15 = self::leftRotate(intval($x15) ^ intval($x3), 8);
+        $x11+= $x15; $x7 = self::leftRotate(intval($x7) ^ intval($x11), 7);
+
+        // rowRound
+        $x0+= $x5; $x15 = self::leftRotate(intval($x15) ^ intval($x0), 16);
+        $x10+= $x15; $x5 = self::leftRotate(intval($x5) ^ intval($x10), 12);
+        $x0+= $x5; $x15 = self::leftRotate(intval($x15) ^ intval($x0), 8);
+        $x10+= $x15; $x5 = self::leftRotate(intval($x5) ^ intval($x10), 7);
+
+        $x1+= $x6; $x12 = self::leftRotate(intval($x12) ^ intval($x1), 16);
+        $x11+= $x12; $x6 = self::leftRotate(intval($x6) ^ intval($x11), 12);
+        $x1+= $x6; $x12 = self::leftRotate(intval($x12) ^ intval($x1), 8);
+        $x11+= $x12; $x6 = self::leftRotate(intval($x6) ^ intval($x11), 7);
+
+        $x2+= $x7; $x13 = self::leftRotate(intval($x13) ^ intval($x2), 16);
+        $x8+= $x13; $x7 = self::leftRotate(intval($x7) ^ intval($x8), 12);
+        $x2+= $x7; $x13 = self::leftRotate(intval($x13) ^ intval($x2), 8);
+        $x8+= $x13; $x7 = self::leftRotate(intval($x7) ^ intval($x8), 7);
+
+        $x3+= $x4; $x14 = self::leftRotate(intval($x14) ^ intval($x3), 16);
+        $x9+= $x14; $x4 = self::leftRotate(intval($x4) ^ intval($x9), 12);
+        $x3+= $x4; $x14 = self::leftRotate(intval($x14) ^ intval($x3), 8);
+        $x9+= $x14; $x4 = self::leftRotate(intval($x4) ^ intval($x9), 7);
+
+        // columnRound
+        $x0+= $x4; $x12 = self::leftRotate(intval($x12) ^ intval($x0), 16);
+        $x8+= $x12; $x4 = self::leftRotate(intval($x4) ^ intval($x8), 12);
+        $x0+= $x4; $x12 = self::leftRotate(intval($x12) ^ intval($x0), 8);
+        $x8+= $x12; $x4 = self::leftRotate(intval($x4) ^ intval($x8), 7);
+
+        $x1+= $x5; $x13 = self::leftRotate(intval($x13) ^ intval($x1), 16);
+        $x9+= $x13; $x5 = self::leftRotate(intval($x5) ^ intval($x9), 12);
+        $x1+= $x5; $x13 = self::leftRotate(intval($x13) ^ intval($x1), 8);
+        $x9+= $x13; $x5 = self::leftRotate(intval($x5) ^ intval($x9), 7);
+
+        $x2+= $x6; $x14 = self::leftRotate(intval($x14) ^ intval($x2), 16);
+        $x10+= $x14; $x6 = self::leftRotate(intval($x6) ^ intval($x10), 12);
+        $x2+= $x6; $x14 = self::leftRotate(intval($x14) ^ intval($x2), 8);
+        $x10+= $x14; $x6 = self::leftRotate(intval($x6) ^ intval($x10), 7);
+
+        $x3+= $x7; $x15 = self::leftRotate(intval($x15) ^ intval($x3), 16);
+        $x11+= $x15; $x7 = self::leftRotate(intval($x7) ^ intval($x11), 12);
+        $x3+= $x7; $x15 = self::leftRotate(intval($x15) ^ intval($x3), 8);
+        $x11+= $x15; $x7 = self::leftRotate(intval($x7) ^ intval($x11), 7);
+
+        // rowRound
+        $x0+= $x5; $x15 = self::leftRotate(intval($x15) ^ intval($x0), 16);
+        $x10+= $x15; $x5 = self::leftRotate(intval($x5) ^ intval($x10), 12);
+        $x0+= $x5; $x15 = self::leftRotate(intval($x15) ^ intval($x0), 8);
+        $x10+= $x15; $x5 = self::leftRotate(intval($x5) ^ intval($x10), 7);
+
+        $x1+= $x6; $x12 = self::leftRotate(intval($x12) ^ intval($x1), 16);
+        $x11+= $x12; $x6 = self::leftRotate(intval($x6) ^ intval($x11), 12);
+        $x1+= $x6; $x12 = self::leftRotate(intval($x12) ^ intval($x1), 8);
+        $x11+= $x12; $x6 = self::leftRotate(intval($x6) ^ intval($x11), 7);
+
+        $x2+= $x7; $x13 = self::leftRotate(intval($x13) ^ intval($x2), 16);
+        $x8+= $x13; $x7 = self::leftRotate(intval($x7) ^ intval($x8), 12);
+        $x2+= $x7; $x13 = self::leftRotate(intval($x13) ^ intval($x2), 8);
+        $x8+= $x13; $x7 = self::leftRotate(intval($x7) ^ intval($x8), 7);
+
+        $x3+= $x4; $x14 = self::leftRotate(intval($x14) ^ intval($x3), 16);
+        $x9+= $x14; $x4 = self::leftRotate(intval($x4) ^ intval($x9), 12);
+        $x3+= $x4; $x14 = self::leftRotate(intval($x14) ^ intval($x3), 8);
+        $x9+= $x14; $x4 = self::leftRotate(intval($x4) ^ intval($x9), 7);
+        // @codingStandardsIgnoreEnd
+
+        $x0 += $z0;
+        $x1 += $z1;
+        $x2 += $z2;
+        $x3 += $z3;
+        $x4 += $z4;
+        $x5 += $z5;
+        $x6 += $z6;
+        $x7 += $z7;
+        $x8 += $z8;
+        $x9 += $z9;
+        $x10 += $z10;
+        $x11 += $z11;
+        $x12 += $z12;
+        $x13 += $z13;
+        $x14 += $z14;
+        $x15 += $z15;
+
+        return pack('V*', $x0, $x1, $x2, $x3, $x4, $x5, $x6, $x7, $x8, $x9, $x10, $x11, $x12, $x13, $x14, $x15);
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/AsymmetricKey.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/AsymmetricKey.php
new file mode 100644
index 0000000..09eb5b1
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/AsymmetricKey.php
@@ -0,0 +1,581 @@
+<?php
+
+/**
+ * Base Class for all asymmetric key ciphers
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\Common;
+
+use phpseclib3\Crypt\DSA;
+use phpseclib3\Crypt\Hash;
+use phpseclib3\Crypt\RSA;
+use phpseclib3\Exception\NoKeyLoadedException;
+use phpseclib3\Exception\UnsupportedFormatException;
+use phpseclib3\Math\BigInteger;
+
+/**
+ * Base Class for all asymmetric cipher classes
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class AsymmetricKey
+{
+    /**
+     * Precomputed Zero
+     *
+     * @var \phpseclib3\Math\BigInteger
+     */
+    protected static $zero;
+
+    /**
+     * Precomputed One
+     *
+     * @var \phpseclib3\Math\BigInteger
+     */
+    protected static $one;
+
+    /**
+     * Format of the loaded key
+     *
+     * @var string
+     */
+    protected $format;
+
+    /**
+     * Hash function
+     *
+     * @var \phpseclib3\Crypt\Hash
+     */
+    protected $hash;
+
+    /**
+     * HMAC function
+     *
+     * @var \phpseclib3\Crypt\Hash
+     */
+    private $hmac;
+
+    /**
+     * Supported plugins (lower case)
+     *
+     * @see self::initialize_static_variables()
+     * @var array
+     */
+    private static $plugins = [];
+
+    /**
+     * Invisible plugins
+     *
+     * @see self::initialize_static_variables()
+     * @var array
+     */
+    private static $invisiblePlugins = [];
+
+    /**
+     * Available Engines
+     *
+     * @var boolean[]
+     */
+    protected static $engines = [];
+
+    /**
+     * Key Comment
+     *
+     * @var null|string
+     */
+    private $comment;
+
+    /**
+     * @param string $type
+     * @return array|string
+     */
+    abstract public function toString($type, array $options = []);
+
+    /**
+     * The constructor
+     */
+    protected function __construct()
+    {
+        self::initialize_static_variables();
+
+        $this->hash = new Hash('sha256');
+        $this->hmac = new Hash('sha256');
+    }
+
+    /**
+     * Initialize static variables
+     */
+    protected static function initialize_static_variables()
+    {
+        if (!isset(self::$zero)) {
+            self::$zero = new BigInteger(0);
+            self::$one = new BigInteger(1);
+        }
+
+        self::loadPlugins('Keys');
+        if (static::ALGORITHM != 'RSA' && static::ALGORITHM != 'DH') {
+            self::loadPlugins('Signature');
+        }
+    }
+
+    /**
+     * Load the key
+     *
+     * @param string $key
+     * @param string $password optional
+     * @return \phpseclib3\Crypt\Common\PublicKey|\phpseclib3\Crypt\Common\PrivateKey
+     */
+    public static function load($key, $password = false)
+    {
+        self::initialize_static_variables();
+
+        $class = new \ReflectionClass(static::class);
+        if ($class->isFinal()) {
+            throw new \RuntimeException('load() should not be called from final classes (' . static::class . ')');
+        }
+
+        $components = false;
+        foreach (self::$plugins[static::ALGORITHM]['Keys'] as $format) {
+            if (isset(self::$invisiblePlugins[static::ALGORITHM]) && in_array($format, self::$invisiblePlugins[static::ALGORITHM])) {
+                continue;
+            }
+            try {
+                $components = $format::load($key, $password);
+            } catch (\Exception $e) {
+                $components = false;
+            }
+            if ($components !== false) {
+                break;
+            }
+        }
+
+        if ($components === false) {
+            throw new NoKeyLoadedException('Unable to read key');
+        }
+
+        $components['format'] = $format;
+        $components['secret'] = isset($components['secret']) ? $components['secret'] : '';
+        $comment = isset($components['comment']) ? $components['comment'] : null;
+        $new = static::onLoad($components);
+        $new->format = $format;
+        $new->comment = $comment;
+        return $new instanceof PrivateKey ?
+            $new->withPassword($password) :
+            $new;
+    }
+
+    /**
+     * Loads a private key
+     *
+     * @return PrivateKey
+     * @param string|array $key
+     * @param string $password optional
+     */
+    public static function loadPrivateKey($key, $password = '')
+    {
+        $key = self::load($key, $password);
+        if (!$key instanceof PrivateKey) {
+            throw new NoKeyLoadedException('The key that was loaded was not a private key');
+        }
+        return $key;
+    }
+
+    /**
+     * Loads a public key
+     *
+     * @return PublicKey
+     * @param string|array $key
+     */
+    public static function loadPublicKey($key)
+    {
+        $key = self::load($key);
+        if (!$key instanceof PublicKey) {
+            throw new NoKeyLoadedException('The key that was loaded was not a public key');
+        }
+        return $key;
+    }
+
+    /**
+     * Loads parameters
+     *
+     * @return AsymmetricKey
+     * @param string|array $key
+     */
+    public static function loadParameters($key)
+    {
+        $key = self::load($key);
+        if (!$key instanceof PrivateKey && !$key instanceof PublicKey) {
+            throw new NoKeyLoadedException('The key that was loaded was not a parameter');
+        }
+        return $key;
+    }
+
+    /**
+     * Load the key, assuming a specific format
+     *
+     * @param string $type
+     * @param string $key
+     * @param string $password optional
+     * @return static
+     */
+    public static function loadFormat($type, $key, $password = false)
+    {
+        self::initialize_static_variables();
+
+        $components = false;
+        $format = strtolower($type);
+        if (isset(self::$plugins[static::ALGORITHM]['Keys'][$format])) {
+            $format = self::$plugins[static::ALGORITHM]['Keys'][$format];
+            $components = $format::load($key, $password);
+        }
+
+        if ($components === false) {
+            throw new NoKeyLoadedException('Unable to read key');
+        }
+
+        $components['format'] = $format;
+        $components['secret'] = isset($components['secret']) ? $components['secret'] : '';
+
+        $new = static::onLoad($components);
+        $new->format = $format;
+        return $new instanceof PrivateKey ?
+            $new->withPassword($password) :
+            $new;
+    }
+
+    /**
+     * Loads a private key
+     *
+     * @return PrivateKey
+     * @param string $type
+     * @param string $key
+     * @param string $password optional
+     */
+    public static function loadPrivateKeyFormat($type, $key, $password = false)
+    {
+        $key = self::loadFormat($type, $key, $password);
+        if (!$key instanceof PrivateKey) {
+            throw new NoKeyLoadedException('The key that was loaded was not a private key');
+        }
+        return $key;
+    }
+
+    /**
+     * Loads a public key
+     *
+     * @return PublicKey
+     * @param string $type
+     * @param string $key
+     */
+    public static function loadPublicKeyFormat($type, $key)
+    {
+        $key = self::loadFormat($type, $key);
+        if (!$key instanceof PublicKey) {
+            throw new NoKeyLoadedException('The key that was loaded was not a public key');
+        }
+        return $key;
+    }
+
+    /**
+     * Loads parameters
+     *
+     * @return AsymmetricKey
+     * @param string $type
+     * @param string|array $key
+     */
+    public static function loadParametersFormat($type, $key)
+    {
+        $key = self::loadFormat($type, $key);
+        if (!$key instanceof PrivateKey && !$key instanceof PublicKey) {
+            throw new NoKeyLoadedException('The key that was loaded was not a parameter');
+        }
+        return $key;
+    }
+
+    /**
+     * Validate Plugin
+     *
+     * @param string $format
+     * @param string $type
+     * @param string $method optional
+     * @return mixed
+     */
+    protected static function validatePlugin($format, $type, $method = null)
+    {
+        $type = strtolower($type);
+        if (!isset(self::$plugins[static::ALGORITHM][$format][$type])) {
+            throw new UnsupportedFormatException("$type is not a supported format");
+        }
+        $type = self::$plugins[static::ALGORITHM][$format][$type];
+        if (isset($method) && !method_exists($type, $method)) {
+            throw new UnsupportedFormatException("$type does not implement $method");
+        }
+
+        return $type;
+    }
+
+    /**
+     * Load Plugins
+     *
+     * @param string $format
+     */
+    private static function loadPlugins($format)
+    {
+        if (!isset(self::$plugins[static::ALGORITHM][$format])) {
+            self::$plugins[static::ALGORITHM][$format] = [];
+            foreach (new \DirectoryIterator(__DIR__ . '/../' . static::ALGORITHM . '/Formats/' . $format . '/') as $file) {
+                if ($file->getExtension() != 'php') {
+                    continue;
+                }
+                $name = $file->getBasename('.php');
+                if ($name[0] == '.') {
+                    continue;
+                }
+                $type = 'phpseclib3\Crypt\\' . static::ALGORITHM . '\\Formats\\' . $format . '\\' . $name;
+                $reflect = new \ReflectionClass($type);
+                if ($reflect->isTrait()) {
+                    continue;
+                }
+                self::$plugins[static::ALGORITHM][$format][strtolower($name)] = $type;
+                if ($reflect->hasConstant('IS_INVISIBLE')) {
+                    self::$invisiblePlugins[static::ALGORITHM][] = $type;
+                }
+            }
+        }
+    }
+
+    /**
+     * Returns a list of supported formats.
+     *
+     * @return array
+     */
+    public static function getSupportedKeyFormats()
+    {
+        self::initialize_static_variables();
+
+        return self::$plugins[static::ALGORITHM]['Keys'];
+    }
+
+    /**
+     * Add a fileformat plugin
+     *
+     * The plugin needs to either already be loaded or be auto-loadable.
+     * Loading a plugin whose shortname overwrite an existing shortname will overwrite the old plugin.
+     *
+     * @see self::load()
+     * @param string $fullname
+     * @return bool
+     */
+    public static function addFileFormat($fullname)
+    {
+        self::initialize_static_variables();
+
+        if (class_exists($fullname)) {
+            $meta = new \ReflectionClass($fullname);
+            $shortname = $meta->getShortName();
+            self::$plugins[static::ALGORITHM]['Keys'][strtolower($shortname)] = $fullname;
+            if ($meta->hasConstant('IS_INVISIBLE')) {
+                self::$invisiblePlugins[static::ALGORITHM][] = strtolower($shortname);
+            }
+        }
+    }
+
+    /**
+     * Returns the format of the loaded key.
+     *
+     * If the key that was loaded wasn't in a valid or if the key was auto-generated
+     * with RSA::createKey() then this will throw an exception.
+     *
+     * @see self::load()
+     * @return mixed
+     */
+    public function getLoadedFormat()
+    {
+        if (empty($this->format)) {
+            throw new NoKeyLoadedException('This key was created with createKey - it was not loaded with load. Therefore there is no "loaded format"');
+        }
+
+        $meta = new \ReflectionClass($this->format);
+        return $meta->getShortName();
+    }
+
+    /**
+     * Returns the key's comment
+     *
+     * Not all key formats support comments. If you want to set a comment use toString()
+     *
+     * @return null|string
+     */
+    public function getComment()
+    {
+        return $this->comment;
+    }
+
+    /**
+     * Tests engine validity
+     *
+     */
+    public static function useBestEngine()
+    {
+        static::$engines = [
+            'PHP' => true,
+            'OpenSSL' => extension_loaded('openssl'),
+            // this test can be satisfied by either of the following:
+            // http://php.net/manual/en/book.sodium.php
+            // https://github.com/paragonie/sodium_compat
+            'libsodium' => function_exists('sodium_crypto_sign_keypair')
+        ];
+
+        return static::$engines;
+    }
+
+    /**
+     * Flag to use internal engine only (useful for unit testing)
+     *
+     */
+    public static function useInternalEngine()
+    {
+        static::$engines = [
+            'PHP' => true,
+            'OpenSSL' => false,
+            'libsodium' => false
+        ];
+    }
+
+    /**
+     * __toString() magic method
+     *
+     * @return string
+     */
+    public function __toString()
+    {
+        return $this->toString('PKCS8');
+    }
+
+    /**
+     * Determines which hashing function should be used
+     *
+     * @param string $hash
+     */
+    public function withHash($hash)
+    {
+        $new = clone $this;
+
+        $new->hash = new Hash($hash);
+        $new->hmac = new Hash($hash);
+
+        return $new;
+    }
+
+    /**
+     * Returns the hash algorithm currently being used
+     *
+     */
+    public function getHash()
+    {
+        return clone $this->hash;
+    }
+
+    /**
+     * Compute the pseudorandom k for signature generation,
+     * using the process specified for deterministic DSA.
+     *
+     * @param string $h1
+     * @return string
+     */
+    protected function computek($h1)
+    {
+        $v = str_repeat("\1", strlen($h1));
+
+        $k = str_repeat("\0", strlen($h1));
+
+        $x = $this->int2octets($this->x);
+        $h1 = $this->bits2octets($h1);
+
+        $this->hmac->setKey($k);
+        $k = $this->hmac->hash($v . "\0" . $x . $h1);
+        $this->hmac->setKey($k);
+        $v = $this->hmac->hash($v);
+        $k = $this->hmac->hash($v . "\1" . $x . $h1);
+        $this->hmac->setKey($k);
+        $v = $this->hmac->hash($v);
+
+        $qlen = $this->q->getLengthInBytes();
+
+        while (true) {
+            $t = '';
+            while (strlen($t) < $qlen) {
+                $v = $this->hmac->hash($v);
+                $t = $t . $v;
+            }
+            $k = $this->bits2int($t);
+
+            if (!$k->equals(self::$zero) && $k->compare($this->q) < 0) {
+                break;
+            }
+            $k = $this->hmac->hash($v . "\0");
+            $this->hmac->setKey($k);
+            $v = $this->hmac->hash($v);
+        }
+
+        return $k;
+    }
+
+    /**
+     * Integer to Octet String
+     *
+     * @param \phpseclib3\Math\BigInteger $v
+     * @return string
+     */
+    private function int2octets($v)
+    {
+        $out = $v->toBytes();
+        $rolen = $this->q->getLengthInBytes();
+        if (strlen($out) < $rolen) {
+            return str_pad($out, $rolen, "\0", STR_PAD_LEFT);
+        } elseif (strlen($out) > $rolen) {
+            return substr($out, -$rolen);
+        } else {
+            return $out;
+        }
+    }
+
+    /**
+     * Bit String to Integer
+     *
+     * @param string $in
+     * @return \phpseclib3\Math\BigInteger
+     */
+    protected function bits2int($in)
+    {
+        $v = new BigInteger($in, 256);
+        $vlen = strlen($in) << 3;
+        $qlen = $this->q->getLength();
+        if ($vlen > $qlen) {
+            return $v->bitwise_rightShift($vlen - $qlen);
+        }
+        return $v;
+    }
+
+    /**
+     * Bit String to Octet String
+     *
+     * @param string $in
+     * @return string
+     */
+    private function bits2octets($in)
+    {
+        $z1 = $this->bits2int($in);
+        $z2 = $z1->subtract($this->q);
+        return $z2->compare(self::$zero) < 0 ?
+            $this->int2octets($z1) :
+            $this->int2octets($z2);
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/BlockCipher.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/BlockCipher.php
new file mode 100644
index 0000000..b2642be
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/BlockCipher.php
@@ -0,0 +1,24 @@
+<?php
+
+/**
+ * Base Class for all block ciphers
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @author    Hans-Juergen Petrich <petrich@tronic-media.com>
+ * @copyright 2007 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\Common;
+
+/**
+ * Base Class for all block cipher classes
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class BlockCipher extends SymmetricKey
+{
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/Formats/Keys/JWK.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/Formats/Keys/JWK.php
new file mode 100644
index 0000000..4c761b8
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/Formats/Keys/JWK.php
@@ -0,0 +1,69 @@
+<?php
+
+/**
+ * JSON Web Key (RFC7517) Handler
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\Common\Formats\Keys;
+
+use phpseclib3\Common\Functions\Strings;
+
+/**
+ * JSON Web Key Formatted Key Handler
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class JWK
+{
+    /**
+     * Break a public or private key down into its constituent components
+     *
+     * @param string $key
+     * @param string $password
+     * @return array
+     */
+    public static function load($key, $password = '')
+    {
+        if (!Strings::is_stringable($key)) {
+            throw new \UnexpectedValueException('Key should be a string - not a ' . gettype($key));
+        }
+
+        $key = preg_replace('#\s#', '', $key); // remove whitespace
+
+        if (PHP_VERSION_ID >= 73000) {
+            $key = json_decode($key, null, 512, JSON_THROW_ON_ERROR);
+        } else {
+            $key = json_decode($key);
+            if (!$key) {
+                throw new \RuntimeException('Unable to decode JSON');
+            }
+        }
+
+        if (isset($key->kty)) {
+            return $key;
+        }
+
+        if (count($key->keys) != 1) {
+            throw new \RuntimeException('Although the JWK key format supports multiple keys phpseclib does not');
+        }
+
+        return $key->keys[0];
+    }
+
+    /**
+     * Wrap a key appropriately
+     *
+     * @return string
+     */
+    protected static function wrapKey(array $key, array $options)
+    {
+        return json_encode(['keys' => [$key + $options]]);
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/Formats/Keys/OpenSSH.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/Formats/Keys/OpenSSH.php
new file mode 100644
index 0000000..fe3d85b
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/Formats/Keys/OpenSSH.php
@@ -0,0 +1,220 @@
+<?php
+
+/**
+ * OpenSSH Key Handler
+ *
+ * PHP version 5
+ *
+ * Place in $HOME/.ssh/authorized_keys
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\Common\Formats\Keys;
+
+use phpseclib3\Common\Functions\Strings;
+use phpseclib3\Crypt\AES;
+use phpseclib3\Crypt\Random;
+
+/**
+ * OpenSSH Formatted RSA Key Handler
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class OpenSSH
+{
+    /**
+     * Default comment
+     *
+     * @var string
+     */
+    protected static $comment = 'phpseclib-generated-key';
+
+    /**
+     * Binary key flag
+     *
+     * @var bool
+     */
+    protected static $binary = false;
+
+    /**
+     * Sets the default comment
+     *
+     * @param string $comment
+     */
+    public static function setComment($comment)
+    {
+        self::$comment = str_replace(["\r", "\n"], '', $comment);
+    }
+
+    /**
+     * Break a public or private key down into its constituent components
+     *
+     * $type can be either ssh-dss or ssh-rsa
+     *
+     * @param string $key
+     * @param string $password
+     * @return array
+     */
+    public static function load($key, $password = '')
+    {
+        if (!Strings::is_stringable($key)) {
+            throw new \UnexpectedValueException('Key should be a string - not a ' . gettype($key));
+        }
+
+        // key format is described here:
+        // https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/PROTOCOL.key?annotate=HEAD
+
+        if (strpos($key, 'BEGIN OPENSSH PRIVATE KEY') !== false) {
+            $key = preg_replace('#(?:^-.*?-[\r\n]*$)|\s#ms', '', $key);
+            $key = Strings::base64_decode($key);
+            $magic = Strings::shift($key, 15);
+            if ($magic != "openssh-key-v1\0") {
+                throw new \RuntimeException('Expected openssh-key-v1');
+            }
+            list($ciphername, $kdfname, $kdfoptions, $numKeys) = Strings::unpackSSH2('sssN', $key);
+            if ($numKeys != 1) {
+                // if we wanted to support multiple keys we could update PublicKeyLoader to preview what the # of keys
+                // would be; it'd then call Common\Keys\OpenSSH.php::load() and get the paddedKey. it'd then pass
+                // that to the appropriate key loading parser $numKey times or something
+                throw new \RuntimeException('Although the OpenSSH private key format supports multiple keys phpseclib does not');
+            }
+            switch ($ciphername) {
+                case 'none':
+                    break;
+                case 'aes256-ctr':
+                    if ($kdfname != 'bcrypt') {
+                        throw new \RuntimeException('Only the bcrypt kdf is supported (' . $kdfname . ' encountered)');
+                    }
+                    list($salt, $rounds) = Strings::unpackSSH2('sN', $kdfoptions);
+                    $crypto = new AES('ctr');
+                    //$crypto->setKeyLength(256);
+                    //$crypto->disablePadding();
+                    $crypto->setPassword($password, 'bcrypt', $salt, $rounds, 32);
+                    break;
+                default:
+                    throw new \RuntimeException('The only supported cipherse are: none, aes256-ctr (' . $ciphername . ' is being used)');
+            }
+
+            list($publicKey, $paddedKey) = Strings::unpackSSH2('ss', $key);
+            list($type) = Strings::unpackSSH2('s', $publicKey);
+            if (isset($crypto)) {
+                $paddedKey = $crypto->decrypt($paddedKey);
+            }
+            list($checkint1, $checkint2) = Strings::unpackSSH2('NN', $paddedKey);
+            // any leftover bytes in $paddedKey are for padding? but they should be sequential bytes. eg. 1, 2, 3, etc.
+            if ($checkint1 != $checkint2) {
+                throw new \RuntimeException('The two checkints do not match');
+            }
+            self::checkType($type);
+
+            return compact('type', 'publicKey', 'paddedKey');
+        }
+
+        $parts = explode(' ', $key, 3);
+
+        if (!isset($parts[1])) {
+            $key = base64_decode($parts[0]);
+            $comment = false;
+        } else {
+            $asciiType = $parts[0];
+            self::checkType($parts[0]);
+            $key = base64_decode($parts[1]);
+            $comment = isset($parts[2]) ? $parts[2] : false;
+        }
+        if ($key === false) {
+            throw new \UnexpectedValueException('Key should be a string - not a ' . gettype($key));
+        }
+
+        list($type) = Strings::unpackSSH2('s', $key);
+        self::checkType($type);
+        if (isset($asciiType) && $asciiType != $type) {
+            throw new \RuntimeException('Two different types of keys are claimed: ' . $asciiType . ' and ' . $type);
+        }
+        if (strlen($key) <= 4) {
+            throw new \UnexpectedValueException('Key appears to be malformed');
+        }
+
+        $publicKey = $key;
+
+        return compact('type', 'publicKey', 'comment');
+    }
+
+    /**
+     * Toggle between binary and printable keys
+     *
+     * Printable keys are what are generated by default. These are the ones that go in
+     * $HOME/.ssh/authorized_key.
+     *
+     * @param bool $enabled
+     */
+    public static function setBinaryOutput($enabled)
+    {
+        self::$binary = $enabled;
+    }
+
+    /**
+     * Checks to see if the type is valid
+     *
+     * @param string $candidate
+     */
+    private static function checkType($candidate)
+    {
+        if (!in_array($candidate, static::$types)) {
+            throw new \RuntimeException("The key type ($candidate) is not equal to: " . implode(',', static::$types));
+        }
+    }
+
+    /**
+     * Wrap a private key appropriately
+     *
+     * @param string $publicKey
+     * @param string $privateKey
+     * @param string $password
+     * @param array $options
+     * @return string
+     */
+    protected static function wrapPrivateKey($publicKey, $privateKey, $password, $options)
+    {
+        list(, $checkint) = unpack('N', Random::string(4));
+
+        $comment = isset($options['comment']) ? $options['comment'] : self::$comment;
+        $paddedKey = Strings::packSSH2('NN', $checkint, $checkint) .
+                     $privateKey .
+                     Strings::packSSH2('s', $comment);
+
+        $usesEncryption = !empty($password) && is_string($password);
+
+        /*
+           from http://tools.ietf.org/html/rfc4253#section-6 :
+
+           Note that the length of the concatenation of 'packet_length',
+           'padding_length', 'payload', and 'random padding' MUST be a multiple
+           of the cipher block size or 8, whichever is larger.
+         */
+        $blockSize = $usesEncryption ? 16 : 8;
+        $paddingLength = (($blockSize - 1) * strlen($paddedKey)) % $blockSize;
+        for ($i = 1; $i <= $paddingLength; $i++) {
+            $paddedKey .= chr($i);
+        }
+        if (!$usesEncryption) {
+            $key = Strings::packSSH2('sssNss', 'none', 'none', '', 1, $publicKey, $paddedKey);
+        } else {
+            $rounds = isset($options['rounds']) ? $options['rounds'] : 16;
+            $salt = Random::string(16);
+            $kdfoptions = Strings::packSSH2('sN', $salt, $rounds);
+            $crypto = new AES('ctr');
+            $crypto->setPassword($password, 'bcrypt', $salt, $rounds, 32);
+            $paddedKey = $crypto->encrypt($paddedKey);
+            $key = Strings::packSSH2('sssNss', 'aes256-ctr', 'bcrypt', $kdfoptions, 1, $publicKey, $paddedKey);
+        }
+        $key = "openssh-key-v1\0$key";
+
+        return "-----BEGIN OPENSSH PRIVATE KEY-----\n" .
+               chunk_split(Strings::base64_encode($key), 70, "\n") .
+               "-----END OPENSSH PRIVATE KEY-----\n";
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/Formats/Keys/PKCS.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/Formats/Keys/PKCS.php
new file mode 100644
index 0000000..0219400
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/Formats/Keys/PKCS.php
@@ -0,0 +1,72 @@
+<?php
+
+/**
+ * PKCS Formatted Key Handler
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\Common\Formats\Keys;
+
+/**
+ * PKCS1 Formatted Key Handler
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class PKCS
+{
+    /**
+     * Auto-detect the format
+     */
+    const MODE_ANY = 0;
+    /**
+     * Require base64-encoded PEM's be supplied
+     */
+    const MODE_PEM = 1;
+    /**
+     * Require raw DER's be supplied
+     */
+    const MODE_DER = 2;
+    /**#@-*/
+
+    /**
+     * Is the key a base-64 encoded PEM, DER or should it be auto-detected?
+     *
+     * @var int
+     */
+    protected static $format = self::MODE_ANY;
+
+    /**
+     * Require base64-encoded PEM's be supplied
+     *
+     */
+    public static function requirePEM()
+    {
+        self::$format = self::MODE_PEM;
+    }
+
+    /**
+     * Require raw DER's be supplied
+     *
+     */
+    public static function requireDER()
+    {
+        self::$format = self::MODE_DER;
+    }
+
+    /**
+     * Accept any format and auto detect the format
+     *
+     * This is the default setting
+     *
+     */
+    public static function requireAny()
+    {
+        self::$format = self::MODE_ANY;
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/Formats/Keys/PKCS1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/Formats/Keys/PKCS1.php
new file mode 100644
index 0000000..4c639c0
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/Formats/Keys/PKCS1.php
@@ -0,0 +1,209 @@
+<?php
+
+/**
+ * PKCS1 Formatted Key Handler
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\Common\Formats\Keys;
+
+use phpseclib3\Common\Functions\Strings;
+use phpseclib3\Crypt\AES;
+use phpseclib3\Crypt\DES;
+use phpseclib3\Crypt\Random;
+use phpseclib3\Crypt\TripleDES;
+use phpseclib3\Exception\UnsupportedAlgorithmException;
+use phpseclib3\File\ASN1;
+
+/**
+ * PKCS1 Formatted Key Handler
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class PKCS1 extends PKCS
+{
+    /**
+     * Default encryption algorithm
+     *
+     * @var string
+     */
+    private static $defaultEncryptionAlgorithm = 'AES-128-CBC';
+
+    /**
+     * Sets the default encryption algorithm
+     *
+     * @param string $algo
+     */
+    public static function setEncryptionAlgorithm($algo)
+    {
+        self::$defaultEncryptionAlgorithm = $algo;
+    }
+
+    /**
+     * Returns the mode constant corresponding to the mode string
+     *
+     * @param string $mode
+     * @return int
+     * @throws \UnexpectedValueException if the block cipher mode is unsupported
+     */
+    private static function getEncryptionMode($mode)
+    {
+        switch ($mode) {
+            case 'CBC':
+            case 'ECB':
+            case 'CFB':
+            case 'OFB':
+            case 'CTR':
+                return $mode;
+        }
+        throw new \UnexpectedValueException('Unsupported block cipher mode of operation');
+    }
+
+    /**
+     * Returns a cipher object corresponding to a string
+     *
+     * @param string $algo
+     * @return string
+     * @throws \UnexpectedValueException if the encryption algorithm is unsupported
+     */
+    private static function getEncryptionObject($algo)
+    {
+        $modes = '(CBC|ECB|CFB|OFB|CTR)';
+        switch (true) {
+            case preg_match("#^AES-(128|192|256)-$modes$#", $algo, $matches):
+                $cipher = new AES(self::getEncryptionMode($matches[2]));
+                $cipher->setKeyLength($matches[1]);
+                return $cipher;
+            case preg_match("#^DES-EDE3-$modes$#", $algo, $matches):
+                return new TripleDES(self::getEncryptionMode($matches[1]));
+            case preg_match("#^DES-$modes$#", $algo, $matches):
+                return new DES(self::getEncryptionMode($matches[1]));
+            default:
+                throw new UnsupportedAlgorithmException($algo . ' is not a supported algorithm');
+        }
+    }
+
+    /**
+     * Generate a symmetric key for PKCS#1 keys
+     *
+     * @param string $password
+     * @param string $iv
+     * @param int $length
+     * @return string
+     */
+    private static function generateSymmetricKey($password, $iv, $length)
+    {
+        $symkey = '';
+        $iv = substr($iv, 0, 8);
+        while (strlen($symkey) < $length) {
+            $symkey .= md5($symkey . $password . $iv, true);
+        }
+        return substr($symkey, 0, $length);
+    }
+
+    /**
+     * Break a public or private key down into its constituent components
+     *
+     * @param string $key
+     * @param string $password optional
+     * @return array
+     */
+    protected static function load($key, $password)
+    {
+        if (!Strings::is_stringable($key)) {
+            throw new \UnexpectedValueException('Key should be a string - not a ' . gettype($key));
+        }
+
+        /* Although PKCS#1 proposes a format that public and private keys can use, encrypting them is
+           "outside the scope" of PKCS#1.  PKCS#1 then refers you to PKCS#12 and PKCS#15 if you're wanting to
+           protect private keys, however, that's not what OpenSSL* does.  OpenSSL protects private keys by adding
+           two new "fields" to the key - DEK-Info and Proc-Type.  These fields are discussed here:
+
+           http://tools.ietf.org/html/rfc1421#section-4.6.1.1
+           http://tools.ietf.org/html/rfc1421#section-4.6.1.3
+
+           DES-EDE3-CBC as an algorithm, however, is not discussed anywhere, near as I can tell.
+           DES-CBC and DES-EDE are discussed in RFC1423, however, DES-EDE3-CBC isn't, nor is its key derivation
+           function.  As is, the definitive authority on this encoding scheme isn't the IETF but rather OpenSSL's
+           own implementation.  ie. the implementation *is* the standard and any bugs that may exist in that
+           implementation are part of the standard, as well.
+
+           * OpenSSL is the de facto standard.  It's utilized by OpenSSH and other projects */
+        if (preg_match('#DEK-Info: (.+),(.+)#', $key, $matches)) {
+            $iv = Strings::hex2bin(trim($matches[2]));
+            // remove the Proc-Type / DEK-Info sections as they're no longer needed
+            $key = preg_replace('#^(?:Proc-Type|DEK-Info): .*#m', '', $key);
+            $ciphertext = ASN1::extractBER($key);
+            if ($ciphertext === false) {
+                $ciphertext = $key;
+            }
+            $crypto = self::getEncryptionObject($matches[1]);
+            $crypto->setKey(self::generateSymmetricKey($password, $iv, $crypto->getKeyLength() >> 3));
+            $crypto->setIV($iv);
+            $key = $crypto->decrypt($ciphertext);
+        } else {
+            if (self::$format != self::MODE_DER) {
+                $decoded = ASN1::extractBER($key);
+                if ($decoded !== false) {
+                    $key = $decoded;
+                } elseif (self::$format == self::MODE_PEM) {
+                    throw new \UnexpectedValueException('Expected base64-encoded PEM format but was unable to decode base64 text');
+                }
+            }
+        }
+
+        return $key;
+    }
+
+    /**
+     * Wrap a private key appropriately
+     *
+     * @param string $key
+     * @param string $type
+     * @param string $password
+     * @param array $options optional
+     * @return string
+     */
+    protected static function wrapPrivateKey($key, $type, $password, array $options = [])
+    {
+        if (empty($password) || !is_string($password)) {
+            return "-----BEGIN $type PRIVATE KEY-----\r\n" .
+                   chunk_split(Strings::base64_encode($key), 64) .
+                   "-----END $type PRIVATE KEY-----";
+        }
+
+        $encryptionAlgorithm = isset($options['encryptionAlgorithm']) ? $options['encryptionAlgorithm'] : self::$defaultEncryptionAlgorithm;
+
+        $cipher = self::getEncryptionObject($encryptionAlgorithm);
+        $iv = Random::string($cipher->getBlockLength() >> 3);
+        $cipher->setKey(self::generateSymmetricKey($password, $iv, $cipher->getKeyLength() >> 3));
+        $cipher->setIV($iv);
+        $iv = strtoupper(Strings::bin2hex($iv));
+        return "-----BEGIN $type PRIVATE KEY-----\r\n" .
+               "Proc-Type: 4,ENCRYPTED\r\n" .
+               "DEK-Info: " . $encryptionAlgorithm . ",$iv\r\n" .
+               "\r\n" .
+               chunk_split(Strings::base64_encode($cipher->encrypt($key)), 64) .
+               "-----END $type PRIVATE KEY-----";
+    }
+
+    /**
+     * Wrap a public key appropriately
+     *
+     * @param string $key
+     * @param string $type
+     * @return string
+     */
+    protected static function wrapPublicKey($key, $type)
+    {
+        return "-----BEGIN $type PUBLIC KEY-----\r\n" .
+               chunk_split(Strings::base64_encode($key), 64) .
+               "-----END $type PUBLIC KEY-----";
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/Formats/Keys/PKCS8.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/Formats/Keys/PKCS8.php
new file mode 100644
index 0000000..7aa5548
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/Formats/Keys/PKCS8.php
@@ -0,0 +1,725 @@
+<?php
+
+/**
+ * PKCS#8 Formatted Key Handler
+ *
+ * PHP version 5
+ *
+ * Used by PHP's openssl_public_encrypt() and openssl's rsautl (when -pubin is set)
+ *
+ * Processes keys with the following headers:
+ *
+ * -----BEGIN ENCRYPTED PRIVATE KEY-----
+ * -----BEGIN PRIVATE KEY-----
+ * -----BEGIN PUBLIC KEY-----
+ *
+ * Analogous to ssh-keygen's pkcs8 format (as specified by -m). Although PKCS8
+ * is specific to private keys it's basically creating a DER-encoded wrapper
+ * for keys. This just extends that same concept to public keys (much like ssh-keygen)
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\Common\Formats\Keys;
+
+use phpseclib3\Common\Functions\Strings;
+use phpseclib3\Crypt\AES;
+use phpseclib3\Crypt\DES;
+use phpseclib3\Crypt\Random;
+use phpseclib3\Crypt\RC2;
+use phpseclib3\Crypt\RC4;
+use phpseclib3\Crypt\TripleDES;
+use phpseclib3\Exception\InsufficientSetupException;
+use phpseclib3\Exception\UnsupportedAlgorithmException;
+use phpseclib3\File\ASN1;
+use phpseclib3\File\ASN1\Maps;
+
+/**
+ * PKCS#8 Formatted Key Handler
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class PKCS8 extends PKCS
+{
+    /**
+     * Default encryption algorithm
+     *
+     * @var string
+     */
+    private static $defaultEncryptionAlgorithm = 'id-PBES2';
+
+    /**
+     * Default encryption scheme
+     *
+     * Only used when defaultEncryptionAlgorithm is id-PBES2
+     *
+     * @var string
+     */
+    private static $defaultEncryptionScheme = 'aes128-CBC-PAD';
+
+    /**
+     * Default PRF
+     *
+     * Only used when defaultEncryptionAlgorithm is id-PBES2
+     *
+     * @var string
+     */
+    private static $defaultPRF = 'id-hmacWithSHA256';
+
+    /**
+     * Default Iteration Count
+     *
+     * @var int
+     */
+    private static $defaultIterationCount = 2048;
+
+    /**
+     * OIDs loaded
+     *
+     * @var bool
+     */
+    private static $oidsLoaded = false;
+
+    /**
+     * Sets the default encryption algorithm
+     *
+     * @param string $algo
+     */
+    public static function setEncryptionAlgorithm($algo)
+    {
+        self::$defaultEncryptionAlgorithm = $algo;
+    }
+
+    /**
+     * Sets the default encryption algorithm for PBES2
+     *
+     * @param string $algo
+     */
+    public static function setEncryptionScheme($algo)
+    {
+        self::$defaultEncryptionScheme = $algo;
+    }
+
+    /**
+     * Sets the iteration count
+     *
+     * @param int $count
+     */
+    public static function setIterationCount($count)
+    {
+        self::$defaultIterationCount = $count;
+    }
+
+    /**
+     * Sets the PRF for PBES2
+     *
+     * @param string $algo
+     */
+    public static function setPRF($algo)
+    {
+        self::$defaultPRF = $algo;
+    }
+
+    /**
+     * Returns a SymmetricKey object based on a PBES1 $algo
+     *
+     * @return \phpseclib3\Crypt\Common\SymmetricKey
+     * @param string $algo
+     */
+    private static function getPBES1EncryptionObject($algo)
+    {
+        $algo = preg_match('#^pbeWith(?:MD2|MD5|SHA1|SHA)And(.*?)-CBC$#', $algo, $matches) ?
+            $matches[1] :
+            substr($algo, 13); // strlen('pbeWithSHAAnd') == 13
+
+        switch ($algo) {
+            case 'DES':
+                $cipher = new DES('cbc');
+                break;
+            case 'RC2':
+                $cipher = new RC2('cbc');
+                $cipher->setKeyLength(64);
+                break;
+            case '3-KeyTripleDES':
+                $cipher = new TripleDES('cbc');
+                break;
+            case '2-KeyTripleDES':
+                $cipher = new TripleDES('cbc');
+                $cipher->setKeyLength(128);
+                break;
+            case '128BitRC2':
+                $cipher = new RC2('cbc');
+                $cipher->setKeyLength(128);
+                break;
+            case '40BitRC2':
+                $cipher = new RC2('cbc');
+                $cipher->setKeyLength(40);
+                break;
+            case '128BitRC4':
+                $cipher = new RC4();
+                $cipher->setKeyLength(128);
+                break;
+            case '40BitRC4':
+                $cipher = new RC4();
+                $cipher->setKeyLength(40);
+                break;
+            default:
+                throw new UnsupportedAlgorithmException("$algo is not a supported algorithm");
+        }
+
+        return $cipher;
+    }
+
+    /**
+     * Returns a hash based on a PBES1 $algo
+     *
+     * @return string
+     * @param string $algo
+     */
+    private static function getPBES1Hash($algo)
+    {
+        if (preg_match('#^pbeWith(MD2|MD5|SHA1|SHA)And.*?-CBC$#', $algo, $matches)) {
+            return $matches[1] == 'SHA' ? 'sha1' : $matches[1];
+        }
+
+        return 'sha1';
+    }
+
+    /**
+     * Returns a KDF baesd on a PBES1 $algo
+     *
+     * @return string
+     * @param string $algo
+     */
+    private static function getPBES1KDF($algo)
+    {
+        switch ($algo) {
+            case 'pbeWithMD2AndDES-CBC':
+            case 'pbeWithMD2AndRC2-CBC':
+            case 'pbeWithMD5AndDES-CBC':
+            case 'pbeWithMD5AndRC2-CBC':
+            case 'pbeWithSHA1AndDES-CBC':
+            case 'pbeWithSHA1AndRC2-CBC':
+                return 'pbkdf1';
+        }
+
+        return 'pkcs12';
+    }
+
+    /**
+     * Returns a SymmetricKey object baesd on a PBES2 $algo
+     *
+     * @return SymmetricKey
+     * @param string $algo
+     */
+    private static function getPBES2EncryptionObject($algo)
+    {
+        switch ($algo) {
+            case 'desCBC':
+                $cipher = new DES('cbc');
+                break;
+            case 'des-EDE3-CBC':
+                $cipher = new TripleDES('cbc');
+                break;
+            case 'rc2CBC':
+                $cipher = new RC2('cbc');
+                // in theory this can be changed
+                $cipher->setKeyLength(128);
+                break;
+            case 'rc5-CBC-PAD':
+                throw new UnsupportedAlgorithmException('rc5-CBC-PAD is not supported for PBES2 PKCS#8 keys');
+            case 'aes128-CBC-PAD':
+            case 'aes192-CBC-PAD':
+            case 'aes256-CBC-PAD':
+                $cipher = new AES('cbc');
+                $cipher->setKeyLength(substr($algo, 3, 3));
+                break;
+            default:
+                throw new UnsupportedAlgorithmException("$algo is not supported");
+        }
+
+        return $cipher;
+    }
+
+    /**
+     * Initialize static variables
+     *
+     */
+    private static function initialize_static_variables()
+    {
+        if (!isset(static::$childOIDsLoaded)) {
+            throw new InsufficientSetupException('This class should not be called directly');
+        }
+
+        if (!static::$childOIDsLoaded) {
+            ASN1::loadOIDs(is_array(static::OID_NAME) ?
+                array_combine(static::OID_NAME, static::OID_VALUE) :
+                [static::OID_NAME => static::OID_VALUE]);
+            static::$childOIDsLoaded = true;
+        }
+        if (!self::$oidsLoaded) {
+            // from https://tools.ietf.org/html/rfc2898
+            ASN1::loadOIDs([
+               // PBES1 encryption schemes
+               'pbeWithMD2AndDES-CBC' => '1.2.840.113549.1.5.1',
+               'pbeWithMD2AndRC2-CBC' => '1.2.840.113549.1.5.4',
+               'pbeWithMD5AndDES-CBC' => '1.2.840.113549.1.5.3',
+               'pbeWithMD5AndRC2-CBC' => '1.2.840.113549.1.5.6',
+               'pbeWithSHA1AndDES-CBC' => '1.2.840.113549.1.5.10',
+               'pbeWithSHA1AndRC2-CBC' => '1.2.840.113549.1.5.11',
+
+               // from PKCS#12:
+               // https://tools.ietf.org/html/rfc7292
+               'pbeWithSHAAnd128BitRC4' => '1.2.840.113549.1.12.1.1',
+               'pbeWithSHAAnd40BitRC4' => '1.2.840.113549.1.12.1.2',
+               'pbeWithSHAAnd3-KeyTripleDES-CBC' => '1.2.840.113549.1.12.1.3',
+               'pbeWithSHAAnd2-KeyTripleDES-CBC' => '1.2.840.113549.1.12.1.4',
+               'pbeWithSHAAnd128BitRC2-CBC' => '1.2.840.113549.1.12.1.5',
+               'pbeWithSHAAnd40BitRC2-CBC' => '1.2.840.113549.1.12.1.6',
+
+               'id-PBKDF2' => '1.2.840.113549.1.5.12',
+               'id-PBES2' => '1.2.840.113549.1.5.13',
+               'id-PBMAC1' => '1.2.840.113549.1.5.14',
+
+               // from PKCS#5 v2.1:
+               // http://www.rsa.com/rsalabs/pkcs/files/h11302-wp-pkcs5v2-1-password-based-cryptography-standard.pdf
+               'id-hmacWithSHA1' => '1.2.840.113549.2.7',
+               'id-hmacWithSHA224' => '1.2.840.113549.2.8',
+               'id-hmacWithSHA256' => '1.2.840.113549.2.9',
+               'id-hmacWithSHA384' => '1.2.840.113549.2.10',
+               'id-hmacWithSHA512' => '1.2.840.113549.2.11',
+               'id-hmacWithSHA512-224' => '1.2.840.113549.2.12',
+               'id-hmacWithSHA512-256' => '1.2.840.113549.2.13',
+
+               'desCBC'       => '1.3.14.3.2.7',
+               'des-EDE3-CBC' => '1.2.840.113549.3.7',
+               'rc2CBC' => '1.2.840.113549.3.2',
+               'rc5-CBC-PAD' => '1.2.840.113549.3.9',
+
+               'aes128-CBC-PAD' => '2.16.840.1.101.3.4.1.2',
+               'aes192-CBC-PAD' => '2.16.840.1.101.3.4.1.22',
+               'aes256-CBC-PAD' => '2.16.840.1.101.3.4.1.42'
+            ]);
+            self::$oidsLoaded = true;
+        }
+    }
+
+    /**
+     * Break a public or private key down into its constituent components
+     *
+     * @param string $key
+     * @param string $password optional
+     * @return array
+     */
+    protected static function load($key, $password = '')
+    {
+        if (!Strings::is_stringable($key)) {
+            throw new \UnexpectedValueException('Key should be a string - not a ' . gettype($key));
+        }
+
+        $isPublic = strpos($key, 'PUBLIC') !== false;
+        $isPrivate = strpos($key, 'PRIVATE') !== false;
+
+        $decoded = self::preParse($key);
+
+        $meta = [];
+
+        $decrypted = ASN1::asn1map($decoded[0], Maps\EncryptedPrivateKeyInfo::MAP);
+        if (strlen($password) && is_array($decrypted)) {
+            $algorithm = $decrypted['encryptionAlgorithm']['algorithm'];
+            switch ($algorithm) {
+                // PBES1
+                case 'pbeWithMD2AndDES-CBC':
+                case 'pbeWithMD2AndRC2-CBC':
+                case 'pbeWithMD5AndDES-CBC':
+                case 'pbeWithMD5AndRC2-CBC':
+                case 'pbeWithSHA1AndDES-CBC':
+                case 'pbeWithSHA1AndRC2-CBC':
+                case 'pbeWithSHAAnd3-KeyTripleDES-CBC':
+                case 'pbeWithSHAAnd2-KeyTripleDES-CBC':
+                case 'pbeWithSHAAnd128BitRC2-CBC':
+                case 'pbeWithSHAAnd40BitRC2-CBC':
+                case 'pbeWithSHAAnd128BitRC4':
+                case 'pbeWithSHAAnd40BitRC4':
+                    $cipher = self::getPBES1EncryptionObject($algorithm);
+                    $hash = self::getPBES1Hash($algorithm);
+                    $kdf = self::getPBES1KDF($algorithm);
+
+                    $meta['meta']['algorithm'] = $algorithm;
+
+                    $temp = ASN1::decodeBER($decrypted['encryptionAlgorithm']['parameters']);
+                    if (!$temp) {
+                        throw new \RuntimeException('Unable to decode BER');
+                    }
+                    extract(ASN1::asn1map($temp[0], Maps\PBEParameter::MAP));
+                    $iterationCount = (int) $iterationCount->toString();
+                    $cipher->setPassword($password, $kdf, $hash, $salt, $iterationCount);
+                    $key = $cipher->decrypt($decrypted['encryptedData']);
+                    $decoded = ASN1::decodeBER($key);
+                    if (!$decoded) {
+                        throw new \RuntimeException('Unable to decode BER 2');
+                    }
+
+                    break;
+                case 'id-PBES2':
+                    $meta['meta']['algorithm'] = $algorithm;
+
+                    $temp = ASN1::decodeBER($decrypted['encryptionAlgorithm']['parameters']);
+                    if (!$temp) {
+                        throw new \RuntimeException('Unable to decode BER');
+                    }
+                    $temp = ASN1::asn1map($temp[0], Maps\PBES2params::MAP);
+                    extract($temp);
+
+                    $cipher = self::getPBES2EncryptionObject($encryptionScheme['algorithm']);
+                    $meta['meta']['cipher'] = $encryptionScheme['algorithm'];
+
+                    $temp = ASN1::decodeBER($decrypted['encryptionAlgorithm']['parameters']);
+                    if (!$temp) {
+                        throw new \RuntimeException('Unable to decode BER');
+                    }
+                    $temp = ASN1::asn1map($temp[0], Maps\PBES2params::MAP);
+                    extract($temp);
+
+                    if (!$cipher instanceof RC2) {
+                        $cipher->setIV($encryptionScheme['parameters']['octetString']);
+                    } else {
+                        $temp = ASN1::decodeBER($encryptionScheme['parameters']);
+                        if (!$temp) {
+                            throw new \RuntimeException('Unable to decode BER');
+                        }
+                        extract(ASN1::asn1map($temp[0], Maps\RC2CBCParameter::MAP));
+                        $effectiveKeyLength = (int) $rc2ParametersVersion->toString();
+                        switch ($effectiveKeyLength) {
+                            case 160:
+                                $effectiveKeyLength = 40;
+                                break;
+                            case 120:
+                                $effectiveKeyLength = 64;
+                                break;
+                            case 58:
+                                $effectiveKeyLength = 128;
+                                break;
+                            //default: // should be >= 256
+                        }
+                        $cipher->setIV($iv);
+                        $cipher->setKeyLength($effectiveKeyLength);
+                    }
+
+                    $meta['meta']['keyDerivationFunc'] = $keyDerivationFunc['algorithm'];
+                    switch ($keyDerivationFunc['algorithm']) {
+                        case 'id-PBKDF2':
+                            $temp = ASN1::decodeBER($keyDerivationFunc['parameters']);
+                            if (!$temp) {
+                                throw new \RuntimeException('Unable to decode BER');
+                            }
+                            $prf = ['algorithm' => 'id-hmacWithSHA1'];
+                            $params = ASN1::asn1map($temp[0], Maps\PBKDF2params::MAP);
+                            extract($params);
+                            $meta['meta']['prf'] = $prf['algorithm'];
+                            $hash = str_replace('-', '/', substr($prf['algorithm'], 11));
+                            $params = [
+                                $password,
+                                'pbkdf2',
+                                $hash,
+                                $salt,
+                                (int) $iterationCount->toString()
+                            ];
+                            if (isset($keyLength)) {
+                                $params[] = (int) $keyLength->toString();
+                            }
+                            $cipher->setPassword(...$params);
+                            $key = $cipher->decrypt($decrypted['encryptedData']);
+                            $decoded = ASN1::decodeBER($key);
+                            if (!$decoded) {
+                                throw new \RuntimeException('Unable to decode BER 3');
+                            }
+                            break;
+                        default:
+                            throw new UnsupportedAlgorithmException('Only PBKDF2 is supported for PBES2 PKCS#8 keys');
+                    }
+                    break;
+                case 'id-PBMAC1':
+                    //$temp = ASN1::decodeBER($decrypted['encryptionAlgorithm']['parameters']);
+                    //$value = ASN1::asn1map($temp[0], Maps\PBMAC1params::MAP);
+                    // since i can't find any implementation that does PBMAC1 it is unsupported
+                    throw new UnsupportedAlgorithmException('Only PBES1 and PBES2 PKCS#8 keys are supported.');
+                // at this point we'll assume that the key conforms to PublicKeyInfo
+            }
+        }
+
+        $private = ASN1::asn1map($decoded[0], Maps\OneAsymmetricKey::MAP);
+        if (is_array($private)) {
+            if ($isPublic) {
+                throw new \UnexpectedValueException('Human readable string claims public key but DER encoded string claims private key');
+            }
+
+            if (isset($private['privateKeyAlgorithm']['parameters']) && !$private['privateKeyAlgorithm']['parameters'] instanceof ASN1\Element && isset($decoded[0]['content'][1]['content'][1])) {
+                $temp = $decoded[0]['content'][1]['content'][1];
+                $private['privateKeyAlgorithm']['parameters'] = new ASN1\Element(substr($key, $temp['start'], $temp['length']));
+            }
+            if (is_array(static::OID_NAME)) {
+                if (!in_array($private['privateKeyAlgorithm']['algorithm'], static::OID_NAME)) {
+                    throw new UnsupportedAlgorithmException($private['privateKeyAlgorithm']['algorithm'] . ' is not a supported key type');
+                }
+            } else {
+                if ($private['privateKeyAlgorithm']['algorithm'] != static::OID_NAME) {
+                    throw new UnsupportedAlgorithmException('Only ' . static::OID_NAME . ' keys are supported; this is a ' . $private['privateKeyAlgorithm']['algorithm'] . ' key');
+                }
+            }
+            if (isset($private['publicKey'])) {
+                if ($private['publicKey'][0] != "\0") {
+                    throw new \UnexpectedValueException('The first byte of the public key should be null - not ' . bin2hex($private['publicKey'][0]));
+                }
+                $private['publicKey'] = substr($private['publicKey'], 1);
+            }
+            return $private + $meta;
+        }
+
+        // EncryptedPrivateKeyInfo and PublicKeyInfo have largely identical "signatures". the only difference
+        // is that the former has an octet string and the later has a bit string. the first byte of a bit
+        // string represents the number of bits in the last byte that are to be ignored but, currently,
+        // bit strings wanting a non-zero amount of bits trimmed are not supported
+        $public = ASN1::asn1map($decoded[0], Maps\PublicKeyInfo::MAP);
+
+        if (is_array($public)) {
+            if ($isPrivate) {
+                throw new \UnexpectedValueException('Human readable string claims private key but DER encoded string claims public key');
+            }
+
+            if ($public['publicKey'][0] != "\0") {
+                throw new \UnexpectedValueException('The first byte of the public key should be null - not ' . bin2hex($public['publicKey'][0]));
+            }
+            if (is_array(static::OID_NAME)) {
+                if (!in_array($public['publicKeyAlgorithm']['algorithm'], static::OID_NAME)) {
+                    throw new UnsupportedAlgorithmException($public['publicKeyAlgorithm']['algorithm'] . ' is not a supported key type');
+                }
+            } else {
+                if ($public['publicKeyAlgorithm']['algorithm'] != static::OID_NAME) {
+                    throw new UnsupportedAlgorithmException('Only ' . static::OID_NAME . ' keys are supported; this is a ' . $public['publicKeyAlgorithm']['algorithm'] . ' key');
+                }
+            }
+            if (isset($public['publicKeyAlgorithm']['parameters']) && !$public['publicKeyAlgorithm']['parameters'] instanceof ASN1\Element && isset($decoded[0]['content'][0]['content'][1])) {
+                $temp = $decoded[0]['content'][0]['content'][1];
+                $public['publicKeyAlgorithm']['parameters'] = new ASN1\Element(substr($key, $temp['start'], $temp['length']));
+            }
+            $public['publicKey'] = substr($public['publicKey'], 1);
+            return $public;
+        }
+
+        throw new \RuntimeException('Unable to parse using either OneAsymmetricKey or PublicKeyInfo ASN1 maps');
+    }
+
+    /**
+     * Wrap a private key appropriately
+     *
+     * @param string $key
+     * @param string $attr
+     * @param mixed $params
+     * @param string $password
+     * @param string $oid optional
+     * @param string $publicKey optional
+     * @param array $options optional
+     * @return string
+     */
+    protected static function wrapPrivateKey($key, $attr, $params, $password, $oid = null, $publicKey = '', array $options = [])
+    {
+        self::initialize_static_variables();
+
+        $key = [
+            'version' => 'v1',
+            'privateKeyAlgorithm' => [
+                'algorithm' => is_string(static::OID_NAME) ? static::OID_NAME : $oid
+             ],
+            'privateKey' => $key
+        ];
+        if ($oid != 'id-Ed25519' && $oid != 'id-Ed448') {
+            $key['privateKeyAlgorithm']['parameters'] = $params;
+        }
+        if (!empty($attr)) {
+            $key['attributes'] = $attr;
+        }
+        if (!empty($publicKey)) {
+            $key['version'] = 'v2';
+            $key['publicKey'] = $publicKey;
+        }
+        $key = ASN1::encodeDER($key, Maps\OneAsymmetricKey::MAP);
+        if (!empty($password) && is_string($password)) {
+            $salt = Random::string(8);
+
+            $iterationCount = isset($options['iterationCount']) ? $options['iterationCount'] : self::$defaultIterationCount;
+            $encryptionAlgorithm = isset($options['encryptionAlgorithm']) ? $options['encryptionAlgorithm'] : self::$defaultEncryptionAlgorithm;
+            $encryptionScheme = isset($options['encryptionScheme']) ? $options['encryptionScheme'] : self::$defaultEncryptionScheme;
+            $prf = isset($options['PRF']) ? $options['PRF'] : self::$defaultPRF;
+
+            if ($encryptionAlgorithm == 'id-PBES2') {
+                $crypto = self::getPBES2EncryptionObject($encryptionScheme);
+                $hash = str_replace('-', '/', substr($prf, 11));
+                $kdf = 'pbkdf2';
+                $iv = Random::string($crypto->getBlockLength() >> 3);
+
+                $PBKDF2params = [
+                    'salt' => $salt,
+                    'iterationCount' => $iterationCount,
+                    'prf' => ['algorithm' => $prf, 'parameters' => null]
+                ];
+                $PBKDF2params = ASN1::encodeDER($PBKDF2params, Maps\PBKDF2params::MAP);
+
+                if (!$crypto instanceof RC2) {
+                    $params = ['octetString' => $iv];
+                } else {
+                    $params = [
+                        'rc2ParametersVersion' => 58,
+                        'iv' => $iv
+                    ];
+                    $params = ASN1::encodeDER($params, Maps\RC2CBCParameter::MAP);
+                    $params = new ASN1\Element($params);
+                }
+
+                $params = [
+                    'keyDerivationFunc' => [
+                        'algorithm' => 'id-PBKDF2',
+                        'parameters' => new ASN1\Element($PBKDF2params)
+                    ],
+                    'encryptionScheme' => [
+                        'algorithm' => $encryptionScheme,
+                        'parameters' => $params
+                    ]
+                ];
+                $params = ASN1::encodeDER($params, Maps\PBES2params::MAP);
+
+                $crypto->setIV($iv);
+            } else {
+                $crypto = self::getPBES1EncryptionObject($encryptionAlgorithm);
+                $hash = self::getPBES1Hash($encryptionAlgorithm);
+                $kdf = self::getPBES1KDF($encryptionAlgorithm);
+
+                $params = [
+                    'salt' => $salt,
+                    'iterationCount' => $iterationCount
+                ];
+                $params = ASN1::encodeDER($params, Maps\PBEParameter::MAP);
+            }
+            $crypto->setPassword($password, $kdf, $hash, $salt, $iterationCount);
+            $key = $crypto->encrypt($key);
+
+            $key = [
+                'encryptionAlgorithm' => [
+                    'algorithm' => $encryptionAlgorithm,
+                    'parameters' => new ASN1\Element($params)
+                ],
+                'encryptedData' => $key
+            ];
+
+            $key = ASN1::encodeDER($key, Maps\EncryptedPrivateKeyInfo::MAP);
+
+            return "-----BEGIN ENCRYPTED PRIVATE KEY-----\r\n" .
+                   chunk_split(Strings::base64_encode($key), 64) .
+                   "-----END ENCRYPTED PRIVATE KEY-----";
+        }
+
+        return "-----BEGIN PRIVATE KEY-----\r\n" .
+               chunk_split(Strings::base64_encode($key), 64) .
+               "-----END PRIVATE KEY-----";
+    }
+
+    /**
+     * Wrap a public key appropriately
+     *
+     * @param string $key
+     * @param mixed $params
+     * @param string $oid
+     * @return string
+     */
+    protected static function wrapPublicKey($key, $params, $oid = null)
+    {
+        self::initialize_static_variables();
+
+        $key = [
+            'publicKeyAlgorithm' => [
+                'algorithm' => is_string(static::OID_NAME) ? static::OID_NAME : $oid
+            ],
+            'publicKey' => "\0" . $key
+        ];
+
+        if ($oid != 'id-Ed25519' && $oid != 'id-Ed448') {
+            $key['publicKeyAlgorithm']['parameters'] = $params;
+        }
+
+        $key = ASN1::encodeDER($key, Maps\PublicKeyInfo::MAP);
+
+        return "-----BEGIN PUBLIC KEY-----\r\n" .
+               chunk_split(Strings::base64_encode($key), 64) .
+               "-----END PUBLIC KEY-----";
+    }
+
+    /**
+     * Perform some preliminary parsing of the key
+     *
+     * @param string $key
+     * @return array
+     */
+    private static function preParse(&$key)
+    {
+        self::initialize_static_variables();
+
+        if (self::$format != self::MODE_DER) {
+            $decoded = ASN1::extractBER($key);
+            if ($decoded !== false) {
+                $key = $decoded;
+            } elseif (self::$format == self::MODE_PEM) {
+                throw new \UnexpectedValueException('Expected base64-encoded PEM format but was unable to decode base64 text');
+            }
+        }
+
+        $decoded = ASN1::decodeBER($key);
+        if (!$decoded) {
+            throw new \RuntimeException('Unable to decode BER');
+        }
+
+        return $decoded;
+    }
+
+    /**
+     * Returns the encryption parameters used by the key
+     *
+     * @param string $key
+     * @return array
+     */
+    public static function extractEncryptionAlgorithm($key)
+    {
+        if (!Strings::is_stringable($key)) {
+            throw new \UnexpectedValueException('Key should be a string - not a ' . gettype($key));
+        }
+
+        $decoded = self::preParse($key);
+
+        $r = ASN1::asn1map($decoded[0], ASN1\Maps\EncryptedPrivateKeyInfo::MAP);
+        if (!is_array($r)) {
+            throw new \RuntimeException('Unable to parse using EncryptedPrivateKeyInfo map');
+        }
+
+        if ($r['encryptionAlgorithm']['algorithm'] == 'id-PBES2') {
+            $decoded = ASN1::decodeBER($r['encryptionAlgorithm']['parameters']->element);
+            if (!$decoded) {
+                throw new \RuntimeException('Unable to decode BER');
+            }
+            $r['encryptionAlgorithm']['parameters'] = ASN1::asn1map($decoded[0], ASN1\Maps\PBES2params::MAP);
+
+            $kdf = &$r['encryptionAlgorithm']['parameters']['keyDerivationFunc'];
+            switch ($kdf['algorithm']) {
+                case 'id-PBKDF2':
+                    $decoded = ASN1::decodeBER($kdf['parameters']->element);
+                    if (!$decoded) {
+                        throw new \RuntimeException('Unable to decode BER');
+                    }
+                    $kdf['parameters'] = ASN1::asn1map($decoded[0], Maps\PBKDF2params::MAP);
+            }
+        }
+
+        return $r['encryptionAlgorithm'];
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/Formats/Keys/PuTTY.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/Formats/Keys/PuTTY.php
new file mode 100644
index 0000000..85da83a
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/Formats/Keys/PuTTY.php
@@ -0,0 +1,374 @@
+<?php
+
+/**
+ * PuTTY Formatted Key Handler
+ *
+ * See PuTTY's SSHPUBK.C and https://tartarus.org/~simon/putty-snapshots/htmldoc/AppendixC.html
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\Common\Formats\Keys;
+
+use phpseclib3\Common\Functions\Strings;
+use phpseclib3\Crypt\AES;
+use phpseclib3\Crypt\Hash;
+use phpseclib3\Crypt\Random;
+use phpseclib3\Exception\UnsupportedAlgorithmException;
+
+/**
+ * PuTTY Formatted Key Handler
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class PuTTY
+{
+    /**
+     * Default comment
+     *
+     * @var string
+     */
+    private static $comment = 'phpseclib-generated-key';
+
+    /**
+     * Default version
+     *
+     * @var int
+     */
+    private static $version = 2;
+
+    /**
+     * Sets the default comment
+     *
+     * @param string $comment
+     */
+    public static function setComment($comment)
+    {
+        self::$comment = str_replace(["\r", "\n"], '', $comment);
+    }
+
+    /**
+     * Sets the default version
+     *
+     * @param int $version
+     */
+    public static function setVersion($version)
+    {
+        if ($version != 2 && $version != 3) {
+            throw new \RuntimeException('Only supported versions are 2 and 3');
+        }
+        self::$version = $version;
+    }
+
+    /**
+     * Generate a symmetric key for PuTTY v2 keys
+     *
+     * @param string $password
+     * @param int $length
+     * @return string
+     */
+    private static function generateV2Key($password, $length)
+    {
+        $symkey = '';
+        $sequence = 0;
+        while (strlen($symkey) < $length) {
+            $temp = pack('Na*', $sequence++, $password);
+            $symkey .= Strings::hex2bin(sha1($temp));
+        }
+        return substr($symkey, 0, $length);
+    }
+
+    /**
+     * Generate a symmetric key for PuTTY v3 keys
+     *
+     * @param string $password
+     * @param string $flavour
+     * @param int $memory
+     * @param int $passes
+     * @param string $salt
+     * @return array
+     */
+    private static function generateV3Key($password, $flavour, $memory, $passes, $salt)
+    {
+        if (!function_exists('sodium_crypto_pwhash')) {
+            throw new \RuntimeException('sodium_crypto_pwhash needs to exist for Argon2 password hasing');
+        }
+
+        switch ($flavour) {
+            case 'Argon2i':
+                $flavour = SODIUM_CRYPTO_PWHASH_ALG_ARGON2I13;
+                break;
+            case 'Argon2id':
+                $flavour = SODIUM_CRYPTO_PWHASH_ALG_ARGON2ID13;
+                break;
+            default:
+                throw new UnsupportedAlgorithmException('Only Argon2i and Argon2id are supported');
+        }
+
+        $length = 80; // keylen + ivlen + mac_keylen
+        $temp = sodium_crypto_pwhash($length, $password, $salt, $passes, $memory << 10, $flavour);
+
+        $symkey = substr($temp, 0, 32);
+        $symiv = substr($temp, 32, 16);
+        $hashkey = substr($temp, -32);
+
+        return compact('symkey', 'symiv', 'hashkey');
+    }
+
+    /**
+     * Break a public or private key down into its constituent components
+     *
+     * @param string $key
+     * @param string $password
+     * @return array
+     */
+    public static function load($key, $password)
+    {
+        if (!Strings::is_stringable($key)) {
+            throw new \UnexpectedValueException('Key should be a string - not a ' . gettype($key));
+        }
+
+        if (strpos($key, 'BEGIN SSH2 PUBLIC KEY') !== false) {
+            $lines = preg_split('#[\r\n]+#', $key);
+            switch (true) {
+                case $lines[0] != '---- BEGIN SSH2 PUBLIC KEY ----':
+                    throw new \UnexpectedValueException('Key doesn\'t start with ---- BEGIN SSH2 PUBLIC KEY ----');
+                case $lines[count($lines) - 1] != '---- END SSH2 PUBLIC KEY ----':
+                    throw new \UnexpectedValueException('Key doesn\'t end with ---- END SSH2 PUBLIC KEY ----');
+            }
+            $lines = array_splice($lines, 1, -1);
+            $lines = array_map(function ($line) {
+                return rtrim($line, "\r\n");
+            }, $lines);
+            $data = $current = '';
+            $values = [];
+            $in_value = false;
+            foreach ($lines as $line) {
+                switch (true) {
+                    case preg_match('#^(.*?): (.*)#', $line, $match):
+                        $in_value = $line[strlen($line) - 1] == '\\';
+                        $current = strtolower($match[1]);
+                        $values[$current] = $in_value ? substr($match[2], 0, -1) : $match[2];
+                        break;
+                    case $in_value:
+                        $in_value = $line[strlen($line) - 1] == '\\';
+                        $values[$current] .= $in_value ? substr($line, 0, -1) : $line;
+                        break;
+                    default:
+                        $data .= $line;
+                }
+            }
+
+            $components = call_user_func([static::PUBLIC_HANDLER, 'load'], $data);
+            if ($components === false) {
+                throw new \UnexpectedValueException('Unable to decode public key');
+            }
+            $components += $values;
+            $components['comment'] = str_replace(['\\\\', '\"'], ['\\', '"'], $values['comment']);
+
+            return $components;
+        }
+
+        $components = [];
+
+        $key = preg_split('#\r\n|\r|\n#', trim($key));
+        if (Strings::shift($key[0], strlen('PuTTY-User-Key-File-')) != 'PuTTY-User-Key-File-') {
+            return false;
+        }
+        $version = (int) Strings::shift($key[0], 3); // should be either "2: " or "3: 0" prior to int casting
+        if ($version != 2 && $version != 3) {
+            throw new \RuntimeException('Only v2 and v3 PuTTY private keys are supported');
+        }
+        $components['type'] = $type = rtrim($key[0]);
+        if (!in_array($type, static::$types)) {
+            $error = count(static::$types) == 1 ?
+                'Only ' . static::$types[0] . ' keys are supported. ' :
+                '';
+            throw new UnsupportedAlgorithmException($error . 'This is an unsupported ' . $type . ' key');
+        }
+        $encryption = trim(preg_replace('#Encryption: (.+)#', '$1', $key[1]));
+        $components['comment'] = trim(preg_replace('#Comment: (.+)#', '$1', $key[2]));
+
+        $publicLength = trim(preg_replace('#Public-Lines: (\d+)#', '$1', $key[3]));
+        $public = Strings::base64_decode(implode('', array_map('trim', array_slice($key, 4, $publicLength))));
+
+        $source = Strings::packSSH2('ssss', $type, $encryption, $components['comment'], $public);
+
+        extract(unpack('Nlength', Strings::shift($public, 4)));
+        $newtype = Strings::shift($public, $length);
+        if ($newtype != $type) {
+            throw new \RuntimeException('The binary type does not match the human readable type field');
+        }
+
+        $components['public'] = $public;
+
+        switch ($version) {
+            case 3:
+                $hashkey = '';
+                break;
+            case 2:
+                $hashkey = 'putty-private-key-file-mac-key';
+        }
+
+        $offset = $publicLength + 4;
+        switch ($encryption) {
+            case 'aes256-cbc':
+                $crypto = new AES('cbc');
+                switch ($version) {
+                    case 3:
+                        $flavour = trim(preg_replace('#Key-Derivation: (.*)#', '$1', $key[$offset++]));
+                        $memory = trim(preg_replace('#Argon2-Memory: (\d+)#', '$1', $key[$offset++]));
+                        $passes = trim(preg_replace('#Argon2-Passes: (\d+)#', '$1', $key[$offset++]));
+                        $parallelism = trim(preg_replace('#Argon2-Parallelism: (\d+)#', '$1', $key[$offset++]));
+                        $salt = Strings::hex2bin(trim(preg_replace('#Argon2-Salt: ([0-9a-f]+)#', '$1', $key[$offset++])));
+
+                        extract(self::generateV3Key($password, $flavour, $memory, $passes, $salt));
+
+                        break;
+                    case 2:
+                        $symkey = self::generateV2Key($password, 32);
+                        $symiv = str_repeat("\0", $crypto->getBlockLength() >> 3);
+                        $hashkey .= $password;
+                }
+        }
+
+        switch ($version) {
+            case 3:
+                $hash = new Hash('sha256');
+                $hash->setKey($hashkey);
+                break;
+            case 2:
+                $hash = new Hash('sha1');
+                $hash->setKey(sha1($hashkey, true));
+        }
+
+        $privateLength = trim(preg_replace('#Private-Lines: (\d+)#', '$1', $key[$offset++]));
+        $private = Strings::base64_decode(implode('', array_map('trim', array_slice($key, $offset, $privateLength))));
+
+        if ($encryption != 'none') {
+            $crypto->setKey($symkey);
+            $crypto->setIV($symiv);
+            $crypto->disablePadding();
+            $private = $crypto->decrypt($private);
+        }
+
+        $source .= Strings::packSSH2('s', $private);
+
+        $hmac = trim(preg_replace('#Private-MAC: (.+)#', '$1', $key[$offset + $privateLength]));
+        $hmac = Strings::hex2bin($hmac);
+
+        if (!hash_equals($hash->hash($source), $hmac)) {
+            throw new \UnexpectedValueException('MAC validation error');
+        }
+
+        $components['private'] = $private;
+
+        return $components;
+    }
+
+    /**
+     * Wrap a private key appropriately
+     *
+     * @param string $public
+     * @param string $private
+     * @param string $type
+     * @param string $password
+     * @param array $options optional
+     * @return string
+     */
+    protected static function wrapPrivateKey($public, $private, $type, $password, array $options = [])
+    {
+        $encryption = (!empty($password) || is_string($password)) ? 'aes256-cbc' : 'none';
+        $comment = isset($options['comment']) ? $options['comment'] : self::$comment;
+        $version = isset($options['version']) ? $options['version'] : self::$version;
+
+        $key = "PuTTY-User-Key-File-$version: $type\r\n";
+        $key .= "Encryption: $encryption\r\n";
+        $key .= "Comment: $comment\r\n";
+
+        $public = Strings::packSSH2('s', $type) . $public;
+
+        $source = Strings::packSSH2('ssss', $type, $encryption, $comment, $public);
+
+        $public = Strings::base64_encode($public);
+        $key .= "Public-Lines: " . ((strlen($public) + 63) >> 6) . "\r\n";
+        $key .= chunk_split($public, 64);
+
+        if (empty($password) && !is_string($password)) {
+            $source .= Strings::packSSH2('s', $private);
+            switch ($version) {
+                case 3:
+                    $hash = new Hash('sha256');
+                    $hash->setKey('');
+                    break;
+                case 2:
+                    $hash = new Hash('sha1');
+                    $hash->setKey(sha1('putty-private-key-file-mac-key', true));
+            }
+        } else {
+            $private .= Random::string(16 - (strlen($private) & 15));
+            $source .= Strings::packSSH2('s', $private);
+            $crypto = new AES('cbc');
+
+            switch ($version) {
+                case 3:
+                    $salt = Random::string(16);
+                    $key .= "Key-Derivation: Argon2id\r\n";
+                    $key .= "Argon2-Memory: 8192\r\n";
+                    $key .= "Argon2-Passes: 13\r\n";
+                    $key .= "Argon2-Parallelism: 1\r\n";
+                    $key .= "Argon2-Salt: " . Strings::bin2hex($salt) . "\r\n";
+                    extract(self::generateV3Key($password, 'Argon2id', 8192, 13, $salt));
+
+                    $hash = new Hash('sha256');
+                    $hash->setKey($hashkey);
+
+                    break;
+                case 2:
+                    $symkey = self::generateV2Key($password, 32);
+                    $symiv = str_repeat("\0", $crypto->getBlockLength() >> 3);
+                    $hashkey = 'putty-private-key-file-mac-key' . $password;
+
+                    $hash = new Hash('sha1');
+                    $hash->setKey(sha1($hashkey, true));
+            }
+
+            $crypto->setKey($symkey);
+            $crypto->setIV($symiv);
+            $crypto->disablePadding();
+            $private = $crypto->encrypt($private);
+            $mac = $hash->hash($source);
+        }
+
+        $private = Strings::base64_encode($private);
+        $key .= 'Private-Lines: ' . ((strlen($private) + 63) >> 6) . "\r\n";
+        $key .= chunk_split($private, 64);
+        $key .= 'Private-MAC: ' . Strings::bin2hex($hash->hash($source)) . "\r\n";
+
+        return $key;
+    }
+
+    /**
+     * Wrap a public key appropriately
+     *
+     * This is basically the format described in RFC 4716 (https://tools.ietf.org/html/rfc4716)
+     *
+     * @param string $key
+     * @param string $type
+     * @return string
+     */
+    protected static function wrapPublicKey($key, $type)
+    {
+        $key = pack('Na*a*', strlen($type), $type, $key);
+        $key = "---- BEGIN SSH2 PUBLIC KEY ----\r\n" .
+               'Comment: "' . str_replace(['\\', '"'], ['\\\\', '\"'], self::$comment) . "\"\r\n" .
+               chunk_split(Strings::base64_encode($key), 64) .
+               '---- END SSH2 PUBLIC KEY ----';
+        return $key;
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/Formats/Signature/Raw.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/Formats/Signature/Raw.php
new file mode 100644
index 0000000..ab8e7e4
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/Formats/Signature/Raw.php
@@ -0,0 +1,60 @@
+<?php
+
+/**
+ * Raw Signature Handler
+ *
+ * PHP version 5
+ *
+ * Handles signatures as arrays
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\Common\Formats\Signature;
+
+use phpseclib3\Math\BigInteger;
+
+/**
+ * Raw Signature Handler
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class Raw
+{
+    /**
+     * Loads a signature
+     *
+     * @param array $sig
+     * @return array|bool
+     */
+    public static function load($sig)
+    {
+        switch (true) {
+            case !is_array($sig):
+            case !isset($sig['r']) || !isset($sig['s']):
+            case !$sig['r'] instanceof BigInteger:
+            case !$sig['s'] instanceof BigInteger:
+                return false;
+        }
+
+        return [
+            'r' => $sig['r'],
+            's' => $sig['s']
+        ];
+    }
+
+    /**
+     * Returns a signature in the appropriate format
+     *
+     * @param \phpseclib3\Math\BigInteger $r
+     * @param \phpseclib3\Math\BigInteger $s
+     * @return string
+     */
+    public static function save(BigInteger $r, BigInteger $s)
+    {
+        return compact('r', 's');
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/PrivateKey.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/PrivateKey.php
new file mode 100644
index 0000000..a6e1eb0
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/PrivateKey.php
@@ -0,0 +1,31 @@
+<?php
+
+/**
+ * PrivateKey interface
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2009 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\Common;
+
+/**
+ * PrivateKey interface
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+interface PrivateKey
+{
+    public function sign($message);
+    //public function decrypt($ciphertext);
+    public function getPublicKey();
+    public function toString($type, array $options = []);
+
+    /**
+     * @param string|false $password
+     * @return mixed
+     */
+    public function withPassword($password = false);
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/PublicKey.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/PublicKey.php
new file mode 100644
index 0000000..48a5875
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/PublicKey.php
@@ -0,0 +1,25 @@
+<?php
+
+/**
+ * PublicKey interface
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2009 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\Common;
+
+/**
+ * PublicKey interface
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+interface PublicKey
+{
+    public function verify($message, $signature);
+    //public function encrypt($plaintext);
+    public function toString($type, array $options = []);
+    public function getFingerprint($algorithm);
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/StreamCipher.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/StreamCipher.php
new file mode 100644
index 0000000..0e2d6f0
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/StreamCipher.php
@@ -0,0 +1,54 @@
+<?php
+
+/**
+ * Base Class for all stream ciphers
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @author    Hans-Juergen Petrich <petrich@tronic-media.com>
+ * @copyright 2007 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\Common;
+
+/**
+ * Base Class for all stream cipher classes
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class StreamCipher extends SymmetricKey
+{
+    /**
+     * Block Length of the cipher
+     *
+     * Stream ciphers do not have a block size
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::block_size
+     * @var int
+     */
+    protected $block_size = 0;
+
+    /**
+     * Default Constructor.
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::__construct()
+     * @return \phpseclib3\Crypt\Common\StreamCipher
+     */
+    public function __construct()
+    {
+        parent::__construct('stream');
+    }
+
+    /**
+     * Stream ciphers not use an IV
+     *
+     * @return bool
+     */
+    public function usesIV()
+    {
+        return false;
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/SymmetricKey.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/SymmetricKey.php
new file mode 100644
index 0000000..175508d
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/SymmetricKey.php
@@ -0,0 +1,3398 @@
+<?php
+
+/**
+ * Base Class for all \phpseclib3\Crypt\* cipher classes
+ *
+ * PHP version 5
+ *
+ * Internally for phpseclib developers:
+ *  If you plan to add a new cipher class, please note following rules:
+ *
+ *  - The new \phpseclib3\Crypt\* cipher class should extend \phpseclib3\Crypt\Common\SymmetricKey
+ *
+ *  - Following methods are then required to be overridden/overloaded:
+ *
+ *    - encryptBlock()
+ *
+ *    - decryptBlock()
+ *
+ *    - setupKey()
+ *
+ *  - All other methods are optional to be overridden/overloaded
+ *
+ *  - Look at the source code of the current ciphers how they extend \phpseclib3\Crypt\Common\SymmetricKey
+ *    and take one of them as a start up for the new cipher class.
+ *
+ *  - Please read all the other comments/notes/hints here also for each class var/method
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @author    Hans-Juergen Petrich <petrich@tronic-media.com>
+ * @copyright 2007 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\Common;
+
+use phpseclib3\Common\Functions\Strings;
+use phpseclib3\Crypt\Blowfish;
+use phpseclib3\Crypt\Hash;
+use phpseclib3\Exception\BadDecryptionException;
+use phpseclib3\Exception\BadModeException;
+use phpseclib3\Exception\InconsistentSetupException;
+use phpseclib3\Exception\InsufficientSetupException;
+use phpseclib3\Exception\UnsupportedAlgorithmException;
+use phpseclib3\Math\BigInteger;
+use phpseclib3\Math\BinaryField;
+use phpseclib3\Math\PrimeField;
+
+/**
+ * Base Class for all \phpseclib3\Crypt\* cipher classes
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ * @author  Hans-Juergen Petrich <petrich@tronic-media.com>
+ */
+abstract class SymmetricKey
+{
+    /**
+     * Encrypt / decrypt using the Counter mode.
+     *
+     * Set to -1 since that's what Crypt/Random.php uses to index the CTR mode.
+     *
+     * @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Counter_.28CTR.29
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::encrypt()
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::decrypt()
+     */
+    const MODE_CTR = -1;
+    /**
+     * Encrypt / decrypt using the Electronic Code Book mode.
+     *
+     * @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Electronic_codebook_.28ECB.29
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::encrypt()
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::decrypt()
+     */
+    const MODE_ECB = 1;
+    /**
+     * Encrypt / decrypt using the Code Book Chaining mode.
+     *
+     * @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Cipher-block_chaining_.28CBC.29
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::encrypt()
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::decrypt()
+     */
+    const MODE_CBC = 2;
+    /**
+     * Encrypt / decrypt using the Cipher Feedback mode.
+     *
+     * @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Cipher_feedback_.28CFB.29
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::encrypt()
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::decrypt()
+     */
+    const MODE_CFB = 3;
+    /**
+     * Encrypt / decrypt using the Cipher Feedback mode (8bit)
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::encrypt()
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::decrypt()
+     */
+    const MODE_CFB8 = 7;
+    /**
+     * Encrypt / decrypt using the Output Feedback mode (8bit)
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::encrypt()
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::decrypt()
+     */
+    const MODE_OFB8 = 8;
+    /**
+     * Encrypt / decrypt using the Output Feedback mode.
+     *
+     * @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Output_feedback_.28OFB.29
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::encrypt()
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::decrypt()
+     */
+    const MODE_OFB = 4;
+    /**
+     * Encrypt / decrypt using Galois/Counter mode.
+     *
+     * @link https://en.wikipedia.org/wiki/Galois/Counter_Mode
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::encrypt()
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::decrypt()
+     */
+    const MODE_GCM = 5;
+    /**
+     * Encrypt / decrypt using streaming mode.
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::encrypt()
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::decrypt()
+     */
+    const MODE_STREAM = 6;
+
+    /**
+     * Mode Map
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::__construct()
+     */
+    const MODE_MAP = [
+        'ctr'    => self::MODE_CTR,
+        'ecb'    => self::MODE_ECB,
+        'cbc'    => self::MODE_CBC,
+        'cfb'    => self::MODE_CFB,
+        'cfb8'   => self::MODE_CFB8,
+        'ofb'    => self::MODE_OFB,
+        'ofb8'   => self::MODE_OFB8,
+        'gcm'    => self::MODE_GCM,
+        'stream' => self::MODE_STREAM
+    ];
+
+    /**
+     * Base value for the internal implementation $engine switch
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::__construct()
+     */
+    const ENGINE_INTERNAL = 1;
+    /**
+     * Base value for the eval() implementation $engine switch
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::__construct()
+     */
+    const ENGINE_EVAL = 2;
+    /**
+     * Base value for the mcrypt implementation $engine switch
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::__construct()
+     */
+    const ENGINE_MCRYPT = 3;
+    /**
+     * Base value for the openssl implementation $engine switch
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::__construct()
+     */
+    const ENGINE_OPENSSL = 4;
+    /**
+     * Base value for the libsodium implementation $engine switch
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::__construct()
+     */
+    const ENGINE_LIBSODIUM = 5;
+    /**
+     * Base value for the openssl / gcm implementation $engine switch
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::__construct()
+     */
+    const ENGINE_OPENSSL_GCM = 6;
+
+    /**
+     * Engine Reverse Map
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::getEngine()
+     */
+    const ENGINE_MAP = [
+        self::ENGINE_INTERNAL    => 'PHP',
+        self::ENGINE_EVAL        => 'Eval',
+        self::ENGINE_MCRYPT      => 'mcrypt',
+        self::ENGINE_OPENSSL     => 'OpenSSL',
+        self::ENGINE_LIBSODIUM   => 'libsodium',
+        self::ENGINE_OPENSSL_GCM => 'OpenSSL (GCM)'
+    ];
+
+    /**
+     * The Encryption Mode
+     *
+     * @see self::__construct()
+     * @var int
+     */
+    protected $mode;
+
+    /**
+     * The Block Length of the block cipher
+     *
+     * @var int
+     */
+    protected $block_size = 16;
+
+    /**
+     * The Key
+     *
+     * @see self::setKey()
+     * @var string
+     */
+    protected $key = false;
+
+    /**
+     * HMAC Key
+     *
+     * @see self::setupGCM()
+     * @var ?string
+     */
+    protected $hKey = false;
+
+    /**
+     * The Initialization Vector
+     *
+     * @see self::setIV()
+     * @var string
+     */
+    protected $iv = false;
+
+    /**
+     * A "sliding" Initialization Vector
+     *
+     * @see self::enableContinuousBuffer()
+     * @see self::clearBuffers()
+     * @var string
+     */
+    protected $encryptIV;
+
+    /**
+     * A "sliding" Initialization Vector
+     *
+     * @see self::enableContinuousBuffer()
+     * @see self::clearBuffers()
+     * @var string
+     */
+    protected $decryptIV;
+
+    /**
+     * Continuous Buffer status
+     *
+     * @see self::enableContinuousBuffer()
+     * @var bool
+     */
+    protected $continuousBuffer = false;
+
+    /**
+     * Encryption buffer for CTR, OFB and CFB modes
+     *
+     * @see self::encrypt()
+     * @see self::clearBuffers()
+     * @var array
+     */
+    protected $enbuffer;
+
+    /**
+     * Decryption buffer for CTR, OFB and CFB modes
+     *
+     * @see self::decrypt()
+     * @see self::clearBuffers()
+     * @var array
+     */
+    protected $debuffer;
+
+    /**
+     * mcrypt resource for encryption
+     *
+     * The mcrypt resource can be recreated every time something needs to be created or it can be created just once.
+     * Since mcrypt operates in continuous mode, by default, it'll need to be recreated when in non-continuous mode.
+     *
+     * @see self::encrypt()
+     * @var resource
+     */
+    private $enmcrypt;
+
+    /**
+     * mcrypt resource for decryption
+     *
+     * The mcrypt resource can be recreated every time something needs to be created or it can be created just once.
+     * Since mcrypt operates in continuous mode, by default, it'll need to be recreated when in non-continuous mode.
+     *
+     * @see self::decrypt()
+     * @var resource
+     */
+    private $demcrypt;
+
+    /**
+     * Does the enmcrypt resource need to be (re)initialized?
+     *
+     * @see \phpseclib3\Crypt\Twofish::setKey()
+     * @see \phpseclib3\Crypt\Twofish::setIV()
+     * @var bool
+     */
+    private $enchanged = true;
+
+    /**
+     * Does the demcrypt resource need to be (re)initialized?
+     *
+     * @see \phpseclib3\Crypt\Twofish::setKey()
+     * @see \phpseclib3\Crypt\Twofish::setIV()
+     * @var bool
+     */
+    private $dechanged = true;
+
+    /**
+     * mcrypt resource for CFB mode
+     *
+     * mcrypt's CFB mode, in (and only in) buffered context,
+     * is broken, so phpseclib implements the CFB mode by it self,
+     * even when the mcrypt php extension is available.
+     *
+     * In order to do the CFB-mode work (fast) phpseclib
+     * use a separate ECB-mode mcrypt resource.
+     *
+     * @link http://phpseclib.sourceforge.net/cfb-demo.phps
+     * @see self::encrypt()
+     * @see self::decrypt()
+     * @see self::setupMcrypt()
+     * @var resource
+     */
+    private $ecb;
+
+    /**
+     * Optimizing value while CFB-encrypting
+     *
+     * Only relevant if $continuousBuffer enabled
+     * and $engine == self::ENGINE_MCRYPT
+     *
+     * It's faster to re-init $enmcrypt if
+     * $buffer bytes > $cfb_init_len than
+     * using the $ecb resource furthermore.
+     *
+     * This value depends of the chosen cipher
+     * and the time it would be needed for it's
+     * initialization [by mcrypt_generic_init()]
+     * which, typically, depends on the complexity
+     * on its internaly Key-expanding algorithm.
+     *
+     * @see self::encrypt()
+     * @var int
+     */
+    protected $cfb_init_len = 600;
+
+    /**
+     * Does internal cipher state need to be (re)initialized?
+     *
+     * @see self::setKey()
+     * @see self::setIV()
+     * @see self::disableContinuousBuffer()
+     * @var bool
+     */
+    protected $changed = true;
+
+    /**
+     * Does Eval engie need to be (re)initialized?
+     *
+     * @see self::setup()
+     * @var bool
+     */
+    protected $nonIVChanged = true;
+
+    /**
+     * Padding status
+     *
+     * @see self::enablePadding()
+     * @var bool
+     */
+    private $padding = true;
+
+    /**
+     * Is the mode one that is paddable?
+     *
+     * @see self::__construct()
+     * @var bool
+     */
+    private $paddable = false;
+
+    /**
+     * Holds which crypt engine internaly should be use,
+     * which will be determined automatically on __construct()
+     *
+     * Currently available $engines are:
+     * - self::ENGINE_LIBSODIUM   (very fast, php-extension: libsodium, extension_loaded('libsodium') required)
+     * - self::ENGINE_OPENSSL_GCM (very fast, php-extension: openssl, extension_loaded('openssl') required)
+     * - self::ENGINE_OPENSSL     (very fast, php-extension: openssl, extension_loaded('openssl') required)
+     * - self::ENGINE_MCRYPT      (fast, php-extension: mcrypt, extension_loaded('mcrypt') required)
+     * - self::ENGINE_EVAL        (medium, pure php-engine, no php-extension required)
+     * - self::ENGINE_INTERNAL    (slower, pure php-engine, no php-extension required)
+     *
+     * @see self::setEngine()
+     * @see self::encrypt()
+     * @see self::decrypt()
+     * @var int
+     */
+    protected $engine;
+
+    /**
+     * Holds the preferred crypt engine
+     *
+     * @see self::setEngine()
+     * @see self::setPreferredEngine()
+     * @var int
+     */
+    private $preferredEngine;
+
+    /**
+     * The mcrypt specific name of the cipher
+     *
+     * Only used if $engine == self::ENGINE_MCRYPT
+     *
+     * @link http://www.php.net/mcrypt_module_open
+     * @link http://www.php.net/mcrypt_list_algorithms
+     * @see self::setupMcrypt()
+     * @var string
+     */
+    protected $cipher_name_mcrypt;
+
+    /**
+     * The openssl specific name of the cipher
+     *
+     * Only used if $engine == self::ENGINE_OPENSSL
+     *
+     * @link http://www.php.net/openssl-get-cipher-methods
+     * @var string
+     */
+    protected $cipher_name_openssl;
+
+    /**
+     * The openssl specific name of the cipher in ECB mode
+     *
+     * If OpenSSL does not support the mode we're trying to use (CTR)
+     * it can still be emulated with ECB mode.
+     *
+     * @link http://www.php.net/openssl-get-cipher-methods
+     * @var string
+     */
+    protected $cipher_name_openssl_ecb;
+
+    /**
+     * The default salt used by setPassword()
+     *
+     * @see self::setPassword()
+     * @var string
+     */
+    private $password_default_salt = 'phpseclib/salt';
+
+    /**
+     * The name of the performance-optimized callback function
+     *
+     * Used by encrypt() / decrypt()
+     * only if $engine == self::ENGINE_INTERNAL
+     *
+     * @see self::encrypt()
+     * @see self::decrypt()
+     * @see self::setupInlineCrypt()
+     * @var Callback
+     */
+    protected $inline_crypt;
+
+    /**
+     * If OpenSSL can be used in ECB but not in CTR we can emulate CTR
+     *
+     * @see self::openssl_ctr_process()
+     * @var bool
+     */
+    private $openssl_emulate_ctr = false;
+
+    /**
+     * Don't truncate / null pad key
+     *
+     * @see self::clearBuffers()
+     * @var bool
+     */
+    private $skip_key_adjustment = false;
+
+    /**
+     * Has the key length explicitly been set or should it be derived from the key, itself?
+     *
+     * @see self::setKeyLength()
+     * @var bool
+     */
+    protected $explicit_key_length = false;
+
+    /**
+     * Hash subkey for GHASH
+     *
+     * @see self::setupGCM()
+     * @see self::ghash()
+     * @var BinaryField\Integer
+     */
+    private $h;
+
+    /**
+     * Additional authenticated data
+     *
+     * @var string
+     */
+    protected $aad = '';
+
+    /**
+     * Authentication Tag produced after a round of encryption
+     *
+     * @var string
+     */
+    protected $newtag = false;
+
+    /**
+     * Authentication Tag to be verified during decryption
+     *
+     * @var string
+     */
+    protected $oldtag = false;
+
+    /**
+     * GCM Binary Field
+     *
+     * @see self::__construct()
+     * @see self::ghash()
+     * @var BinaryField
+     */
+    private static $gcmField;
+
+    /**
+     * Poly1305 Prime Field
+     *
+     * @see self::enablePoly1305()
+     * @see self::poly1305()
+     * @var PrimeField
+     */
+    private static $poly1305Field;
+
+    /**
+     * Flag for using regular vs "safe" intval
+     *
+     * @see self::initialize_static_variables()
+     * @var boolean
+     */
+    protected static $use_reg_intval;
+
+    /**
+     * Poly1305 Key
+     *
+     * @see self::setPoly1305Key()
+     * @see self::poly1305()
+     * @var string
+     */
+    protected $poly1305Key;
+
+    /**
+     * Poly1305 Flag
+     *
+     * @see self::setPoly1305Key()
+     * @see self::enablePoly1305()
+     * @var boolean
+     */
+    protected $usePoly1305 = false;
+
+    /**
+     * The Original Initialization Vector
+     *
+     * GCM uses the nonce to build the IV but we want to be able to distinguish between nonce-derived
+     * IV's and user-set IV's
+     *
+     * @see self::setIV()
+     * @var string
+     */
+    private $origIV = false;
+
+    /**
+     * Nonce
+     *
+     * Only used with GCM. We could re-use setIV() but nonce's can be of a different length and
+     * toggling between GCM and other modes could be more complicated if we re-used setIV()
+     *
+     * @see self::setNonce()
+     * @var string
+     */
+    protected $nonce = false;
+
+    /**
+     * Default Constructor.
+     *
+     * $mode could be:
+     *
+     * - ecb
+     *
+     * - cbc
+     *
+     * - ctr
+     *
+     * - cfb
+     *
+     * - cfb8
+     *
+     * - ofb
+     *
+     * - ofb8
+     *
+     * - gcm
+     *
+     * @param string $mode
+     * @throws BadModeException if an invalid / unsupported mode is provided
+     */
+    public function __construct($mode)
+    {
+        $mode = strtolower($mode);
+        // necessary because of 5.6 compatibility; we can't do isset(self::MODE_MAP[$mode]) in 5.6
+        $map = self::MODE_MAP;
+        if (!isset($map[$mode])) {
+            throw new BadModeException('No valid mode has been specified');
+        }
+
+        $mode = self::MODE_MAP[$mode];
+
+        // $mode dependent settings
+        switch ($mode) {
+            case self::MODE_ECB:
+            case self::MODE_CBC:
+                $this->paddable = true;
+                break;
+            case self::MODE_CTR:
+            case self::MODE_CFB:
+            case self::MODE_CFB8:
+            case self::MODE_OFB:
+            case self::MODE_OFB8:
+            case self::MODE_STREAM:
+                $this->paddable = false;
+                break;
+            case self::MODE_GCM:
+                if ($this->block_size != 16) {
+                    throw new BadModeException('GCM is only valid for block ciphers with a block size of 128 bits');
+                }
+                if (!isset(self::$gcmField)) {
+                    self::$gcmField = new BinaryField(128, 7, 2, 1, 0);
+                }
+                $this->paddable = false;
+                break;
+            default:
+                throw new BadModeException('No valid mode has been specified');
+        }
+
+        $this->mode = $mode;
+
+        static::initialize_static_variables();
+    }
+
+    /**
+     * Initialize static variables
+     */
+    protected static function initialize_static_variables()
+    {
+        if (!isset(self::$use_reg_intval)) {
+            switch (true) {
+                // PHP_OS & "\xDF\xDF\xDF" == strtoupper(substr(PHP_OS, 0, 3)), but a lot faster
+                case (PHP_OS & "\xDF\xDF\xDF") === 'WIN':
+                case !function_exists('php_uname'):
+                case !is_string(php_uname('m')):
+                case (php_uname('m') & "\xDF\xDF\xDF") != 'ARM':
+                case defined('PHP_INT_SIZE') && PHP_INT_SIZE == 8:
+                    self::$use_reg_intval = true;
+                    break;
+                case (php_uname('m') & "\xDF\xDF\xDF") == 'ARM':
+                    switch (true) {
+                        /* PHP 7.0.0 introduced a bug that affected 32-bit ARM processors:
+
+                           https://github.com/php/php-src/commit/716da71446ebbd40fa6cf2cea8a4b70f504cc3cd
+
+                           altho the changelogs make no mention of it, this bug was fixed with this commit:
+
+                           https://github.com/php/php-src/commit/c1729272b17a1fe893d1a54e423d3b71470f3ee8
+
+                           affected versions of PHP are: 7.0.x, 7.1.0 - 7.1.23 and 7.2.0 - 7.2.11 */
+                        case PHP_VERSION_ID >= 70000 && PHP_VERSION_ID <= 70123:
+                        case PHP_VERSION_ID >= 70200 && PHP_VERSION_ID <= 70211:
+                            self::$use_reg_intval = false;
+                            break;
+                        default:
+                            self::$use_reg_intval = true;
+                    }
+            }
+        }
+    }
+
+    /**
+     * Sets the initialization vector.
+     *
+     * setIV() is not required when ecb or gcm modes are being used.
+     *
+     * {@internal Can be overwritten by a sub class, but does not have to be}
+     *
+     * @param string $iv
+     * @throws \LengthException if the IV length isn't equal to the block size
+     * @throws \BadMethodCallException if an IV is provided when one shouldn't be
+     */
+    public function setIV($iv)
+    {
+        if ($this->mode == self::MODE_ECB) {
+            throw new \BadMethodCallException('This mode does not require an IV.');
+        }
+
+        if ($this->mode == self::MODE_GCM) {
+            throw new \BadMethodCallException('Use setNonce instead');
+        }
+
+        if (!$this->usesIV()) {
+            throw new \BadMethodCallException('This algorithm does not use an IV.');
+        }
+
+        if (strlen($iv) != $this->block_size) {
+            throw new \LengthException('Received initialization vector of size ' . strlen($iv) . ', but size ' . $this->block_size . ' is required');
+        }
+
+        $this->iv = $this->origIV = $iv;
+        $this->changed = true;
+    }
+
+    /**
+     * Enables Poly1305 mode.
+     *
+     * Once enabled Poly1305 cannot be disabled.
+     *
+     * @throws \BadMethodCallException if Poly1305 is enabled whilst in GCM mode
+     */
+    public function enablePoly1305()
+    {
+        if ($this->mode == self::MODE_GCM) {
+            throw new \BadMethodCallException('Poly1305 cannot be used in GCM mode');
+        }
+
+        $this->usePoly1305 = true;
+    }
+
+    /**
+     * Enables Poly1305 mode.
+     *
+     * Once enabled Poly1305 cannot be disabled. If $key is not passed then an attempt to call createPoly1305Key
+     * will be made.
+     *
+     * @param string $key optional
+     * @throws \LengthException if the key isn't long enough
+     * @throws \BadMethodCallException if Poly1305 is enabled whilst in GCM mode
+     */
+    public function setPoly1305Key($key = null)
+    {
+        if ($this->mode == self::MODE_GCM) {
+            throw new \BadMethodCallException('Poly1305 cannot be used in GCM mode');
+        }
+
+        if (!is_string($key) || strlen($key) != 32) {
+            throw new \LengthException('The Poly1305 key must be 32 bytes long (256 bits)');
+        }
+
+        if (!isset(self::$poly1305Field)) {
+            // 2^130-5
+            self::$poly1305Field = new PrimeField(new BigInteger('3fffffffffffffffffffffffffffffffb', 16));
+        }
+
+        $this->poly1305Key = $key;
+        $this->usePoly1305 = true;
+    }
+
+    /**
+     * Sets the nonce.
+     *
+     * setNonce() is only required when gcm is used
+     *
+     * @param string $nonce
+     * @throws \BadMethodCallException if an nonce is provided when one shouldn't be
+     */
+    public function setNonce($nonce)
+    {
+        if ($this->mode != self::MODE_GCM) {
+            throw new \BadMethodCallException('Nonces are only used in GCM mode.');
+        }
+
+        $this->nonce = $nonce;
+        $this->setEngine();
+    }
+
+    /**
+     * Sets additional authenticated data
+     *
+     * setAAD() is only used by gcm or in poly1305 mode
+     *
+     * @param string $aad
+     * @throws \BadMethodCallException if mode isn't GCM or if poly1305 isn't being utilized
+     */
+    public function setAAD($aad)
+    {
+        if ($this->mode != self::MODE_GCM && !$this->usePoly1305) {
+            throw new \BadMethodCallException('Additional authenticated data is only utilized in GCM mode or with Poly1305');
+        }
+
+        $this->aad = $aad;
+    }
+
+    /**
+     * Returns whether or not the algorithm uses an IV
+     *
+     * @return bool
+     */
+    public function usesIV()
+    {
+        return $this->mode != self::MODE_GCM && $this->mode != self::MODE_ECB;
+    }
+
+    /**
+     * Returns whether or not the algorithm uses a nonce
+     *
+     * @return bool
+     */
+    public function usesNonce()
+    {
+        return $this->mode == self::MODE_GCM;
+    }
+
+    /**
+     * Returns the current key length in bits
+     *
+     * @return int
+     */
+    public function getKeyLength()
+    {
+        return $this->key_length << 3;
+    }
+
+    /**
+     * Returns the current block length in bits
+     *
+     * @return int
+     */
+    public function getBlockLength()
+    {
+        return $this->block_size << 3;
+    }
+
+    /**
+     * Returns the current block length in bytes
+     *
+     * @return int
+     */
+    public function getBlockLengthInBytes()
+    {
+        return $this->block_size;
+    }
+
+    /**
+     * Sets the key length.
+     *
+     * Keys with explicitly set lengths need to be treated accordingly
+     *
+     * @param int $length
+     */
+    public function setKeyLength($length)
+    {
+        $this->explicit_key_length = $length >> 3;
+
+        if (is_string($this->key) && strlen($this->key) != $this->explicit_key_length) {
+            $this->key = false;
+            throw new InconsistentSetupException('Key has already been set and is not ' . $this->explicit_key_length . ' bytes long');
+        }
+    }
+
+    /**
+     * Sets the key.
+     *
+     * The min/max length(s) of the key depends on the cipher which is used.
+     * If the key not fits the length(s) of the cipher it will paded with null bytes
+     * up to the closest valid key length.  If the key is more than max length,
+     * we trim the excess bits.
+     *
+     * If the key is not explicitly set, it'll be assumed to be all null bytes.
+     *
+     * {@internal Could, but not must, extend by the child Crypt_* class}
+     *
+     * @param string $key
+     */
+    public function setKey($key)
+    {
+        if ($this->explicit_key_length !== false && strlen($key) != $this->explicit_key_length) {
+            throw new InconsistentSetupException('Key length has already been set to ' . $this->explicit_key_length . ' bytes and this key is ' . strlen($key) . ' bytes');
+        }
+
+        $this->key = $key;
+        $this->key_length = strlen($key);
+        $this->setEngine();
+    }
+
+    /**
+     * Sets the password.
+     *
+     * Depending on what $method is set to, setPassword()'s (optional) parameters are as follows:
+     *     {@link http://en.wikipedia.org/wiki/PBKDF2 pbkdf2} or pbkdf1:
+     *         $hash, $salt, $count, $dkLen
+     *
+     *         Where $hash (default = sha1) currently supports the following hashes: see: Crypt/Hash.php
+     *     {@link https://en.wikipedia.org/wiki/Bcrypt bcypt}:
+     *         $salt, $rounds, $keylen
+     *
+     *         This is a modified version of bcrypt used by OpenSSH.
+     *
+     * {@internal Could, but not must, extend by the child Crypt_* class}
+     *
+     * @see Crypt/Hash.php
+     * @param string $password
+     * @param string $method
+     * @param int|string ...$func_args
+     * @throws \LengthException if pbkdf1 is being used and the derived key length exceeds the hash length
+     * @throws \RuntimeException if bcrypt is being used and a salt isn't provided
+     * @return bool
+     */
+    public function setPassword($password, $method = 'pbkdf2', ...$func_args)
+    {
+        $key = '';
+
+        $method = strtolower($method);
+        switch ($method) {
+            case 'bcrypt':
+                if (!isset($func_args[2])) {
+                    throw new \RuntimeException('A salt must be provided for bcrypt to work');
+                }
+
+                $salt = $func_args[0];
+
+                $rounds = isset($func_args[1]) ? $func_args[1] : 16;
+                $keylen = isset($func_args[2]) ? $func_args[2] : $this->key_length;
+
+                $key = Blowfish::bcrypt_pbkdf($password, $salt, $keylen + $this->block_size, $rounds);
+
+                $this->setKey(substr($key, 0, $keylen));
+                $this->setIV(substr($key, $keylen));
+
+                return true;
+            case 'pkcs12': // from https://tools.ietf.org/html/rfc7292#appendix-B.2
+            case 'pbkdf1':
+            case 'pbkdf2':
+                // Hash function
+                $hash = isset($func_args[0]) ? strtolower($func_args[0]) : 'sha1';
+                $hashObj = new Hash();
+                $hashObj->setHash($hash);
+
+                // WPA and WPA2 use the SSID as the salt
+                $salt = isset($func_args[1]) ? $func_args[1] : $this->password_default_salt;
+
+                // RFC2898#section-4.2 uses 1,000 iterations by default
+                // WPA and WPA2 use 4,096.
+                $count = isset($func_args[2]) ? $func_args[2] : 1000;
+
+                // Keylength
+                if (isset($func_args[3])) {
+                    if ($func_args[3] <= 0) {
+                        throw new \LengthException('Derived key length cannot be longer 0 or less');
+                    }
+                    $dkLen = $func_args[3];
+                } else {
+                    $key_length = $this->explicit_key_length !== false ? $this->explicit_key_length : $this->key_length;
+                    $dkLen = $method == 'pbkdf1' ? 2 * $key_length : $key_length;
+                }
+
+                switch (true) {
+                    case $method == 'pkcs12':
+                        /*
+                         In this specification, however, all passwords are created from
+                         BMPStrings with a NULL terminator.  This means that each character in
+                         the original BMPString is encoded in 2 bytes in big-endian format
+                         (most-significant byte first).  There are no Unicode byte order
+                         marks.  The 2 bytes produced from the last character in the BMPString
+                         are followed by 2 additional bytes with the value 0x00.
+
+                         -- https://tools.ietf.org/html/rfc7292#appendix-B.1
+                         */
+                        $password = "\0" . chunk_split($password, 1, "\0") . "\0";
+
+                        /*
+                         This standard specifies 3 different values for the ID byte mentioned
+                         above:
+
+                         1.  If ID=1, then the pseudorandom bits being produced are to be used
+                             as key material for performing encryption or decryption.
+
+                         2.  If ID=2, then the pseudorandom bits being produced are to be used
+                             as an IV (Initial Value) for encryption or decryption.
+
+                         3.  If ID=3, then the pseudorandom bits being produced are to be used
+                             as an integrity key for MACing.
+                         */
+                        // Construct a string, D (the "diversifier"), by concatenating v/8
+                        // copies of ID.
+                        $blockLength = $hashObj->getBlockLengthInBytes();
+                        $d1 = str_repeat(chr(1), $blockLength);
+                        $d2 = str_repeat(chr(2), $blockLength);
+                        $s = '';
+                        if (strlen($salt)) {
+                            while (strlen($s) < $blockLength) {
+                                $s .= $salt;
+                            }
+                        }
+                        $s = substr($s, 0, $blockLength);
+
+                        $p = '';
+                        if (strlen($password)) {
+                            while (strlen($p) < $blockLength) {
+                                $p .= $password;
+                            }
+                        }
+                        $p = substr($p, 0, $blockLength);
+
+                        $i = $s . $p;
+
+                        $this->setKey(self::pkcs12helper($dkLen, $hashObj, $i, $d1, $count));
+                        if ($this->usesIV()) {
+                            $this->setIV(self::pkcs12helper($this->block_size, $hashObj, $i, $d2, $count));
+                        }
+
+                        return true;
+                    case $method == 'pbkdf1':
+                        if ($dkLen > $hashObj->getLengthInBytes()) {
+                            throw new \LengthException('Derived key length cannot be longer than the hash length');
+                        }
+                        $t = $password . $salt;
+                        for ($i = 0; $i < $count; ++$i) {
+                            $t = $hashObj->hash($t);
+                        }
+                        $key = substr($t, 0, $dkLen);
+
+                        $this->setKey(substr($key, 0, $dkLen >> 1));
+                        if ($this->usesIV()) {
+                            $this->setIV(substr($key, $dkLen >> 1));
+                        }
+
+                        return true;
+                    case !in_array($hash, hash_algos()):
+                        $i = 1;
+                        $hashObj->setKey($password);
+                        while (strlen($key) < $dkLen) {
+                            $f = $u = $hashObj->hash($salt . pack('N', $i++));
+                            for ($j = 2; $j <= $count; ++$j) {
+                                $u = $hashObj->hash($u);
+                                $f ^= $u;
+                            }
+                            $key .= $f;
+                        }
+                        $key = substr($key, 0, $dkLen);
+                        break;
+                    default:
+                        $key = hash_pbkdf2($hash, $password, $salt, $count, $dkLen, true);
+                }
+                break;
+            default:
+                throw new UnsupportedAlgorithmException($method . ' is not a supported password hashing method');
+        }
+
+        $this->setKey($key);
+
+        return true;
+    }
+
+    /**
+     * PKCS#12 KDF Helper Function
+     *
+     * As discussed here:
+     *
+     * {@link https://tools.ietf.org/html/rfc7292#appendix-B}
+     *
+     * @see self::setPassword()
+     * @param int $n
+     * @param \phpseclib3\Crypt\Hash $hashObj
+     * @param string $i
+     * @param string $d
+     * @param int $count
+     * @return string $a
+     */
+    private static function pkcs12helper($n, $hashObj, $i, $d, $count)
+    {
+        static $one;
+        if (!isset($one)) {
+            $one = new BigInteger(1);
+        }
+
+        $blockLength = $hashObj->getBlockLength() >> 3;
+
+        $c = ceil($n / $hashObj->getLengthInBytes());
+        $a = '';
+        for ($j = 1; $j <= $c; $j++) {
+            $ai = $d . $i;
+            for ($k = 0; $k < $count; $k++) {
+                $ai = $hashObj->hash($ai);
+            }
+            $b = '';
+            while (strlen($b) < $blockLength) {
+                $b .= $ai;
+            }
+            $b = substr($b, 0, $blockLength);
+            $b = new BigInteger($b, 256);
+            $newi = '';
+            for ($k = 0; $k < strlen($i); $k += $blockLength) {
+                $temp = substr($i, $k, $blockLength);
+                $temp = new BigInteger($temp, 256);
+                $temp->setPrecision($blockLength << 3);
+                $temp = $temp->add($b);
+                $temp = $temp->add($one);
+                $newi .= $temp->toBytes(false);
+            }
+            $i = $newi;
+            $a .= $ai;
+        }
+
+        return substr($a, 0, $n);
+    }
+
+    /**
+     * Encrypts a message.
+     *
+     * $plaintext will be padded with additional bytes such that it's length is a multiple of the block size. Other cipher
+     * implementations may or may not pad in the same manner.  Other common approaches to padding and the reasons why it's
+     * necessary are discussed in the following
+     * URL:
+     *
+     * {@link http://www.di-mgt.com.au/cryptopad.html http://www.di-mgt.com.au/cryptopad.html}
+     *
+     * An alternative to padding is to, separately, send the length of the file.  This is what SSH, in fact, does.
+     * strlen($plaintext) will still need to be a multiple of the block size, however, arbitrary values can be added to make it that
+     * length.
+     *
+     * {@internal Could, but not must, extend by the child Crypt_* class}
+     *
+     * @see self::decrypt()
+     * @param string $plaintext
+     * @return string $ciphertext
+     */
+    public function encrypt($plaintext)
+    {
+        if ($this->paddable) {
+            $plaintext = $this->pad($plaintext);
+        }
+
+        $this->setup();
+
+        if ($this->mode == self::MODE_GCM) {
+            $oldIV = $this->iv;
+            Strings::increment_str($this->iv);
+            $cipher = new static('ctr');
+            $cipher->setKey($this->key);
+            $cipher->setIV($this->iv);
+            $ciphertext = $cipher->encrypt($plaintext);
+
+            $s = $this->ghash(
+                self::nullPad128($this->aad) .
+                self::nullPad128($ciphertext) .
+                self::len64($this->aad) .
+                self::len64($ciphertext)
+            );
+            $cipher->encryptIV = $this->iv = $this->encryptIV = $this->decryptIV = $oldIV;
+            $this->newtag = $cipher->encrypt($s);
+            return $ciphertext;
+        }
+
+        if (isset($this->poly1305Key)) {
+            $cipher = clone $this;
+            unset($cipher->poly1305Key);
+            $this->usePoly1305 = false;
+            $ciphertext = $cipher->encrypt($plaintext);
+            $this->newtag = $this->poly1305($ciphertext);
+            return $ciphertext;
+        }
+
+        if ($this->engine === self::ENGINE_OPENSSL) {
+            switch ($this->mode) {
+                case self::MODE_STREAM:
+                    return openssl_encrypt($plaintext, $this->cipher_name_openssl, $this->key, OPENSSL_RAW_DATA | OPENSSL_ZERO_PADDING);
+                case self::MODE_ECB:
+                    return openssl_encrypt($plaintext, $this->cipher_name_openssl, $this->key, OPENSSL_RAW_DATA | OPENSSL_ZERO_PADDING);
+                case self::MODE_CBC:
+                    $result = openssl_encrypt($plaintext, $this->cipher_name_openssl, $this->key, OPENSSL_RAW_DATA | OPENSSL_ZERO_PADDING, $this->encryptIV);
+                    if ($this->continuousBuffer) {
+                        $this->encryptIV = substr($result, -$this->block_size);
+                    }
+                    return $result;
+                case self::MODE_CTR:
+                    return $this->openssl_ctr_process($plaintext, $this->encryptIV, $this->enbuffer);
+                case self::MODE_CFB:
+                    // cfb loosely routines inspired by openssl's:
+                    // {@link http://cvs.openssl.org/fileview?f=openssl/crypto/modes/cfb128.c&v=1.3.2.2.2.1}
+                    $ciphertext = '';
+                    if ($this->continuousBuffer) {
+                        $iv = &$this->encryptIV;
+                        $pos = &$this->enbuffer['pos'];
+                    } else {
+                        $iv = $this->encryptIV;
+                        $pos = 0;
+                    }
+                    $len = strlen($plaintext);
+                    $i = 0;
+                    if ($pos) {
+                        $orig_pos = $pos;
+                        $max = $this->block_size - $pos;
+                        if ($len >= $max) {
+                            $i = $max;
+                            $len -= $max;
+                            $pos = 0;
+                        } else {
+                            $i = $len;
+                            $pos += $len;
+                            $len = 0;
+                        }
+                        // ie. $i = min($max, $len), $len-= $i, $pos+= $i, $pos%= $blocksize
+                        $ciphertext = substr($iv, $orig_pos) ^ $plaintext;
+                        $iv = substr_replace($iv, $ciphertext, $orig_pos, $i);
+                        $plaintext = substr($plaintext, $i);
+                    }
+
+                    $overflow = $len % $this->block_size;
+
+                    if ($overflow) {
+                        $ciphertext .= openssl_encrypt(substr($plaintext, 0, -$overflow) . str_repeat("\0", $this->block_size), $this->cipher_name_openssl, $this->key, OPENSSL_RAW_DATA | OPENSSL_ZERO_PADDING, $iv);
+                        $iv = Strings::pop($ciphertext, $this->block_size);
+
+                        $size = $len - $overflow;
+                        $block = $iv ^ substr($plaintext, -$overflow);
+                        $iv = substr_replace($iv, $block, 0, $overflow);
+                        $ciphertext .= $block;
+                        $pos = $overflow;
+                    } elseif ($len) {
+                        $ciphertext = openssl_encrypt($plaintext, $this->cipher_name_openssl, $this->key, OPENSSL_RAW_DATA | OPENSSL_ZERO_PADDING, $iv);
+                        $iv = substr($ciphertext, -$this->block_size);
+                    }
+
+                    return $ciphertext;
+                case self::MODE_CFB8:
+                    $ciphertext = openssl_encrypt($plaintext, $this->cipher_name_openssl, $this->key, OPENSSL_RAW_DATA | OPENSSL_ZERO_PADDING, $this->encryptIV);
+                    if ($this->continuousBuffer) {
+                        if (($len = strlen($ciphertext)) >= $this->block_size) {
+                            $this->encryptIV = substr($ciphertext, -$this->block_size);
+                        } else {
+                            $this->encryptIV = substr($this->encryptIV, $len - $this->block_size) . substr($ciphertext, -$len);
+                        }
+                    }
+                    return $ciphertext;
+                case self::MODE_OFB8:
+                    $ciphertext = '';
+                    $len = strlen($plaintext);
+                    $iv = $this->encryptIV;
+
+                    for ($i = 0; $i < $len; ++$i) {
+                        $xor = openssl_encrypt($iv, $this->cipher_name_openssl_ecb, $this->key, $this->openssl_options, $this->decryptIV);
+                        $ciphertext .= $plaintext[$i] ^ $xor;
+                        $iv = substr($iv, 1) . $xor[0];
+                    }
+
+                    if ($this->continuousBuffer) {
+                        $this->encryptIV = $iv;
+                    }
+                    break;
+                case self::MODE_OFB:
+                    return $this->openssl_ofb_process($plaintext, $this->encryptIV, $this->enbuffer);
+            }
+        }
+
+        if ($this->engine === self::ENGINE_MCRYPT) {
+            set_error_handler(function () {
+            });
+            if ($this->enchanged) {
+                mcrypt_generic_init($this->enmcrypt, $this->key, $this->getIV($this->encryptIV));
+                $this->enchanged = false;
+            }
+
+            // re: {@link http://phpseclib.sourceforge.net/cfb-demo.phps}
+            // using mcrypt's default handing of CFB the above would output two different things.  using phpseclib's
+            // rewritten CFB implementation the above outputs the same thing twice.
+            if ($this->mode == self::MODE_CFB && $this->continuousBuffer) {
+                $block_size = $this->block_size;
+                $iv = &$this->encryptIV;
+                $pos = &$this->enbuffer['pos'];
+                $len = strlen($plaintext);
+                $ciphertext = '';
+                $i = 0;
+                if ($pos) {
+                    $orig_pos = $pos;
+                    $max = $block_size - $pos;
+                    if ($len >= $max) {
+                        $i = $max;
+                        $len -= $max;
+                        $pos = 0;
+                    } else {
+                        $i = $len;
+                        $pos += $len;
+                        $len = 0;
+                    }
+                    $ciphertext = substr($iv, $orig_pos) ^ $plaintext;
+                    $iv = substr_replace($iv, $ciphertext, $orig_pos, $i);
+                    $this->enbuffer['enmcrypt_init'] = true;
+                }
+                if ($len >= $block_size) {
+                    if ($this->enbuffer['enmcrypt_init'] === false || $len > $this->cfb_init_len) {
+                        if ($this->enbuffer['enmcrypt_init'] === true) {
+                            mcrypt_generic_init($this->enmcrypt, $this->key, $iv);
+                            $this->enbuffer['enmcrypt_init'] = false;
+                        }
+                        $ciphertext .= mcrypt_generic($this->enmcrypt, substr($plaintext, $i, $len - $len % $block_size));
+                        $iv = substr($ciphertext, -$block_size);
+                        $len %= $block_size;
+                    } else {
+                        while ($len >= $block_size) {
+                            $iv = mcrypt_generic($this->ecb, $iv) ^ substr($plaintext, $i, $block_size);
+                            $ciphertext .= $iv;
+                            $len -= $block_size;
+                            $i += $block_size;
+                        }
+                    }
+                }
+
+                if ($len) {
+                    $iv = mcrypt_generic($this->ecb, $iv);
+                    $block = $iv ^ substr($plaintext, -$len);
+                    $iv = substr_replace($iv, $block, 0, $len);
+                    $ciphertext .= $block;
+                    $pos = $len;
+                }
+
+                restore_error_handler();
+
+                return $ciphertext;
+            }
+
+            $ciphertext = mcrypt_generic($this->enmcrypt, $plaintext);
+
+            if (!$this->continuousBuffer) {
+                mcrypt_generic_init($this->enmcrypt, $this->key, $this->getIV($this->encryptIV));
+            }
+
+            restore_error_handler();
+
+            return $ciphertext;
+        }
+
+        if ($this->engine === self::ENGINE_EVAL) {
+            $inline = $this->inline_crypt;
+            return $inline('encrypt', $plaintext);
+        }
+
+        $buffer = &$this->enbuffer;
+        $block_size = $this->block_size;
+        $ciphertext = '';
+        switch ($this->mode) {
+            case self::MODE_ECB:
+                for ($i = 0; $i < strlen($plaintext); $i += $block_size) {
+                    $ciphertext .= $this->encryptBlock(substr($plaintext, $i, $block_size));
+                }
+                break;
+            case self::MODE_CBC:
+                $xor = $this->encryptIV;
+                for ($i = 0; $i < strlen($plaintext); $i += $block_size) {
+                    $block = substr($plaintext, $i, $block_size);
+                    $block = $this->encryptBlock($block ^ $xor);
+                    $xor = $block;
+                    $ciphertext .= $block;
+                }
+                if ($this->continuousBuffer) {
+                    $this->encryptIV = $xor;
+                }
+                break;
+            case self::MODE_CTR:
+                $xor = $this->encryptIV;
+                if (strlen($buffer['ciphertext'])) {
+                    for ($i = 0; $i < strlen($plaintext); $i += $block_size) {
+                        $block = substr($plaintext, $i, $block_size);
+                        if (strlen($block) > strlen($buffer['ciphertext'])) {
+                            $buffer['ciphertext'] .= $this->encryptBlock($xor);
+                            Strings::increment_str($xor);
+                        }
+                        $key = Strings::shift($buffer['ciphertext'], $block_size);
+                        $ciphertext .= $block ^ $key;
+                    }
+                } else {
+                    for ($i = 0; $i < strlen($plaintext); $i += $block_size) {
+                        $block = substr($plaintext, $i, $block_size);
+                        $key = $this->encryptBlock($xor);
+                        Strings::increment_str($xor);
+                        $ciphertext .= $block ^ $key;
+                    }
+                }
+                if ($this->continuousBuffer) {
+                    $this->encryptIV = $xor;
+                    if ($start = strlen($plaintext) % $block_size) {
+                        $buffer['ciphertext'] = substr($key, $start) . $buffer['ciphertext'];
+                    }
+                }
+                break;
+            case self::MODE_CFB:
+                // cfb loosely routines inspired by openssl's:
+                // {@link http://cvs.openssl.org/fileview?f=openssl/crypto/modes/cfb128.c&v=1.3.2.2.2.1}
+                if ($this->continuousBuffer) {
+                    $iv = &$this->encryptIV;
+                    $pos = &$buffer['pos'];
+                } else {
+                    $iv = $this->encryptIV;
+                    $pos = 0;
+                }
+                $len = strlen($plaintext);
+                $i = 0;
+                if ($pos) {
+                    $orig_pos = $pos;
+                    $max = $block_size - $pos;
+                    if ($len >= $max) {
+                        $i = $max;
+                        $len -= $max;
+                        $pos = 0;
+                    } else {
+                        $i = $len;
+                        $pos += $len;
+                        $len = 0;
+                    }
+                    // ie. $i = min($max, $len), $len-= $i, $pos+= $i, $pos%= $blocksize
+                    $ciphertext = substr($iv, $orig_pos) ^ $plaintext;
+                    $iv = substr_replace($iv, $ciphertext, $orig_pos, $i);
+                }
+                while ($len >= $block_size) {
+                    $iv = $this->encryptBlock($iv) ^ substr($plaintext, $i, $block_size);
+                    $ciphertext .= $iv;
+                    $len -= $block_size;
+                    $i += $block_size;
+                }
+                if ($len) {
+                    $iv = $this->encryptBlock($iv);
+                    $block = $iv ^ substr($plaintext, $i);
+                    $iv = substr_replace($iv, $block, 0, $len);
+                    $ciphertext .= $block;
+                    $pos = $len;
+                }
+                break;
+            case self::MODE_CFB8:
+                $ciphertext = '';
+                $len = strlen($plaintext);
+                $iv = $this->encryptIV;
+
+                for ($i = 0; $i < $len; ++$i) {
+                    $ciphertext .= ($c = $plaintext[$i] ^ $this->encryptBlock($iv));
+                    $iv = substr($iv, 1) . $c;
+                }
+
+                if ($this->continuousBuffer) {
+                    if ($len >= $block_size) {
+                        $this->encryptIV = substr($ciphertext, -$block_size);
+                    } else {
+                        $this->encryptIV = substr($this->encryptIV, $len - $block_size) . substr($ciphertext, -$len);
+                    }
+                }
+                break;
+            case self::MODE_OFB8:
+                $ciphertext = '';
+                $len = strlen($plaintext);
+                $iv = $this->encryptIV;
+
+                for ($i = 0; $i < $len; ++$i) {
+                    $xor = $this->encryptBlock($iv);
+                    $ciphertext .= $plaintext[$i] ^ $xor;
+                    $iv = substr($iv, 1) . $xor[0];
+                }
+
+                if ($this->continuousBuffer) {
+                    $this->encryptIV = $iv;
+                }
+                break;
+            case self::MODE_OFB:
+                $xor = $this->encryptIV;
+                if (strlen($buffer['xor'])) {
+                    for ($i = 0; $i < strlen($plaintext); $i += $block_size) {
+                        $block = substr($plaintext, $i, $block_size);
+                        if (strlen($block) > strlen($buffer['xor'])) {
+                            $xor = $this->encryptBlock($xor);
+                            $buffer['xor'] .= $xor;
+                        }
+                        $key = Strings::shift($buffer['xor'], $block_size);
+                        $ciphertext .= $block ^ $key;
+                    }
+                } else {
+                    for ($i = 0; $i < strlen($plaintext); $i += $block_size) {
+                        $xor = $this->encryptBlock($xor);
+                        $ciphertext .= substr($plaintext, $i, $block_size) ^ $xor;
+                    }
+                    $key = $xor;
+                }
+                if ($this->continuousBuffer) {
+                    $this->encryptIV = $xor;
+                    if ($start = strlen($plaintext) % $block_size) {
+                        $buffer['xor'] = substr($key, $start) . $buffer['xor'];
+                    }
+                }
+                break;
+            case self::MODE_STREAM:
+                $ciphertext = $this->encryptBlock($plaintext);
+                break;
+        }
+
+        return $ciphertext;
+    }
+
+    /**
+     * Decrypts a message.
+     *
+     * If strlen($ciphertext) is not a multiple of the block size, null bytes will be added to the end of the string until
+     * it is.
+     *
+     * {@internal Could, but not must, extend by the child Crypt_* class}
+     *
+     * @see self::encrypt()
+     * @param string $ciphertext
+     * @return string $plaintext
+     * @throws \LengthException if we're inside a block cipher and the ciphertext length is not a multiple of the block size
+     */
+    public function decrypt($ciphertext)
+    {
+        if ($this->paddable && strlen($ciphertext) % $this->block_size) {
+            throw new \LengthException('The ciphertext length (' . strlen($ciphertext) . ') needs to be a multiple of the block size (' . $this->block_size . ')');
+        }
+        $this->setup();
+
+        if ($this->mode == self::MODE_GCM || isset($this->poly1305Key)) {
+            if ($this->oldtag === false) {
+                throw new InsufficientSetupException('Authentication Tag has not been set');
+            }
+
+            if (isset($this->poly1305Key)) {
+                $newtag = $this->poly1305($ciphertext);
+            } else {
+                $oldIV = $this->iv;
+                Strings::increment_str($this->iv);
+                $cipher = new static('ctr');
+                $cipher->setKey($this->key);
+                $cipher->setIV($this->iv);
+                $plaintext = $cipher->decrypt($ciphertext);
+
+                $s = $this->ghash(
+                    self::nullPad128($this->aad) .
+                    self::nullPad128($ciphertext) .
+                    self::len64($this->aad) .
+                    self::len64($ciphertext)
+                );
+                $cipher->encryptIV = $this->iv = $this->encryptIV = $this->decryptIV = $oldIV;
+                $newtag = $cipher->encrypt($s);
+            }
+            if ($this->oldtag != substr($newtag, 0, strlen($newtag))) {
+                $cipher = clone $this;
+                unset($cipher->poly1305Key);
+                $this->usePoly1305 = false;
+                $plaintext = $cipher->decrypt($ciphertext);
+                $this->oldtag = false;
+                throw new BadDecryptionException('Derived authentication tag and supplied authentication tag do not match');
+            }
+            $this->oldtag = false;
+            return $plaintext;
+        }
+
+        if ($this->engine === self::ENGINE_OPENSSL) {
+            switch ($this->mode) {
+                case self::MODE_STREAM:
+                    $plaintext = openssl_decrypt($ciphertext, $this->cipher_name_openssl, $this->key, OPENSSL_RAW_DATA | OPENSSL_ZERO_PADDING);
+                    break;
+                case self::MODE_ECB:
+                    $plaintext = openssl_decrypt($ciphertext, $this->cipher_name_openssl, $this->key, OPENSSL_RAW_DATA | OPENSSL_ZERO_PADDING);
+                    break;
+                case self::MODE_CBC:
+                    $offset = $this->block_size;
+                    $plaintext = openssl_decrypt($ciphertext, $this->cipher_name_openssl, $this->key, OPENSSL_RAW_DATA | OPENSSL_ZERO_PADDING, $this->decryptIV);
+                    if ($this->continuousBuffer) {
+                        $this->decryptIV = substr($ciphertext, -$offset, $this->block_size);
+                    }
+                    break;
+                case self::MODE_CTR:
+                    $plaintext = $this->openssl_ctr_process($ciphertext, $this->decryptIV, $this->debuffer);
+                    break;
+                case self::MODE_CFB:
+                    // cfb loosely routines inspired by openssl's:
+                    // {@link http://cvs.openssl.org/fileview?f=openssl/crypto/modes/cfb128.c&v=1.3.2.2.2.1}
+                    $plaintext = '';
+                    if ($this->continuousBuffer) {
+                        $iv = &$this->decryptIV;
+                        $pos = &$this->debuffer['pos'];
+                    } else {
+                        $iv = $this->decryptIV;
+                        $pos = 0;
+                    }
+                    $len = strlen($ciphertext);
+                    $i = 0;
+                    if ($pos) {
+                        $orig_pos = $pos;
+                        $max = $this->block_size - $pos;
+                        if ($len >= $max) {
+                            $i = $max;
+                            $len -= $max;
+                            $pos = 0;
+                        } else {
+                            $i = $len;
+                            $pos += $len;
+                            $len = 0;
+                        }
+                        // ie. $i = min($max, $len), $len-= $i, $pos+= $i, $pos%= $this->blocksize
+                        $plaintext = substr($iv, $orig_pos) ^ $ciphertext;
+                        $iv = substr_replace($iv, substr($ciphertext, 0, $i), $orig_pos, $i);
+                        $ciphertext = substr($ciphertext, $i);
+                    }
+                    $overflow = $len % $this->block_size;
+                    if ($overflow) {
+                        $plaintext .= openssl_decrypt(substr($ciphertext, 0, -$overflow), $this->cipher_name_openssl, $this->key, OPENSSL_RAW_DATA | OPENSSL_ZERO_PADDING, $iv);
+                        if ($len - $overflow) {
+                            $iv = substr($ciphertext, -$overflow - $this->block_size, -$overflow);
+                        }
+                        $iv = openssl_encrypt(str_repeat("\0", $this->block_size), $this->cipher_name_openssl, $this->key, OPENSSL_RAW_DATA | OPENSSL_ZERO_PADDING, $iv);
+                        $plaintext .= $iv ^ substr($ciphertext, -$overflow);
+                        $iv = substr_replace($iv, substr($ciphertext, -$overflow), 0, $overflow);
+                        $pos = $overflow;
+                    } elseif ($len) {
+                        $plaintext .= openssl_decrypt($ciphertext, $this->cipher_name_openssl, $this->key, OPENSSL_RAW_DATA | OPENSSL_ZERO_PADDING, $iv);
+                        $iv = substr($ciphertext, -$this->block_size);
+                    }
+                    break;
+                case self::MODE_CFB8:
+                    $plaintext = openssl_decrypt($ciphertext, $this->cipher_name_openssl, $this->key, OPENSSL_RAW_DATA | OPENSSL_ZERO_PADDING, $this->decryptIV);
+                    if ($this->continuousBuffer) {
+                        if (($len = strlen($ciphertext)) >= $this->block_size) {
+                            $this->decryptIV = substr($ciphertext, -$this->block_size);
+                        } else {
+                            $this->decryptIV = substr($this->decryptIV, $len - $this->block_size) . substr($ciphertext, -$len);
+                        }
+                    }
+                    break;
+                case self::MODE_OFB8:
+                    $plaintext = '';
+                    $len = strlen($ciphertext);
+                    $iv = $this->decryptIV;
+
+                    for ($i = 0; $i < $len; ++$i) {
+                        $xor = openssl_encrypt($iv, $this->cipher_name_openssl_ecb, $this->key, $this->openssl_options, $this->decryptIV);
+                        $plaintext .= $ciphertext[$i] ^ $xor;
+                        $iv = substr($iv, 1) . $xor[0];
+                    }
+
+                    if ($this->continuousBuffer) {
+                        $this->decryptIV = $iv;
+                    }
+                    break;
+                case self::MODE_OFB:
+                    $plaintext = $this->openssl_ofb_process($ciphertext, $this->decryptIV, $this->debuffer);
+            }
+
+            return $this->paddable ? $this->unpad($plaintext) : $plaintext;
+        }
+
+        if ($this->engine === self::ENGINE_MCRYPT) {
+            set_error_handler(function () {
+            });
+            $block_size = $this->block_size;
+            if ($this->dechanged) {
+                mcrypt_generic_init($this->demcrypt, $this->key, $this->getIV($this->decryptIV));
+                $this->dechanged = false;
+            }
+
+            if ($this->mode == self::MODE_CFB && $this->continuousBuffer) {
+                $iv = &$this->decryptIV;
+                $pos = &$this->debuffer['pos'];
+                $len = strlen($ciphertext);
+                $plaintext = '';
+                $i = 0;
+                if ($pos) {
+                    $orig_pos = $pos;
+                    $max = $block_size - $pos;
+                    if ($len >= $max) {
+                        $i = $max;
+                        $len -= $max;
+                        $pos = 0;
+                    } else {
+                        $i = $len;
+                        $pos += $len;
+                        $len = 0;
+                    }
+                    // ie. $i = min($max, $len), $len-= $i, $pos+= $i, $pos%= $blocksize
+                    $plaintext = substr($iv, $orig_pos) ^ $ciphertext;
+                    $iv = substr_replace($iv, substr($ciphertext, 0, $i), $orig_pos, $i);
+                }
+                if ($len >= $block_size) {
+                    $cb = substr($ciphertext, $i, $len - $len % $block_size);
+                    $plaintext .= mcrypt_generic($this->ecb, $iv . $cb) ^ $cb;
+                    $iv = substr($cb, -$block_size);
+                    $len %= $block_size;
+                }
+                if ($len) {
+                    $iv = mcrypt_generic($this->ecb, $iv);
+                    $plaintext .= $iv ^ substr($ciphertext, -$len);
+                    $iv = substr_replace($iv, substr($ciphertext, -$len), 0, $len);
+                    $pos = $len;
+                }
+
+                restore_error_handler();
+
+                return $plaintext;
+            }
+
+            $plaintext = mdecrypt_generic($this->demcrypt, $ciphertext);
+
+            if (!$this->continuousBuffer) {
+                mcrypt_generic_init($this->demcrypt, $this->key, $this->getIV($this->decryptIV));
+            }
+
+            restore_error_handler();
+
+            return $this->paddable ? $this->unpad($plaintext) : $plaintext;
+        }
+
+        if ($this->engine === self::ENGINE_EVAL) {
+            $inline = $this->inline_crypt;
+            return $inline('decrypt', $ciphertext);
+        }
+
+        $block_size = $this->block_size;
+
+        $buffer = &$this->debuffer;
+        $plaintext = '';
+        switch ($this->mode) {
+            case self::MODE_ECB:
+                for ($i = 0; $i < strlen($ciphertext); $i += $block_size) {
+                    $plaintext .= $this->decryptBlock(substr($ciphertext, $i, $block_size));
+                }
+                break;
+            case self::MODE_CBC:
+                $xor = $this->decryptIV;
+                for ($i = 0; $i < strlen($ciphertext); $i += $block_size) {
+                    $block = substr($ciphertext, $i, $block_size);
+                    $plaintext .= $this->decryptBlock($block) ^ $xor;
+                    $xor = $block;
+                }
+                if ($this->continuousBuffer) {
+                    $this->decryptIV = $xor;
+                }
+                break;
+            case self::MODE_CTR:
+                $xor = $this->decryptIV;
+                if (strlen($buffer['ciphertext'])) {
+                    for ($i = 0; $i < strlen($ciphertext); $i += $block_size) {
+                        $block = substr($ciphertext, $i, $block_size);
+                        if (strlen($block) > strlen($buffer['ciphertext'])) {
+                            $buffer['ciphertext'] .= $this->encryptBlock($xor);
+                            Strings::increment_str($xor);
+                        }
+                        $key = Strings::shift($buffer['ciphertext'], $block_size);
+                        $plaintext .= $block ^ $key;
+                    }
+                } else {
+                    for ($i = 0; $i < strlen($ciphertext); $i += $block_size) {
+                        $block = substr($ciphertext, $i, $block_size);
+                        $key = $this->encryptBlock($xor);
+                        Strings::increment_str($xor);
+                        $plaintext .= $block ^ $key;
+                    }
+                }
+                if ($this->continuousBuffer) {
+                    $this->decryptIV = $xor;
+                    if ($start = strlen($ciphertext) % $block_size) {
+                        $buffer['ciphertext'] = substr($key, $start) . $buffer['ciphertext'];
+                    }
+                }
+                break;
+            case self::MODE_CFB:
+                if ($this->continuousBuffer) {
+                    $iv = &$this->decryptIV;
+                    $pos = &$buffer['pos'];
+                } else {
+                    $iv = $this->decryptIV;
+                    $pos = 0;
+                }
+                $len = strlen($ciphertext);
+                $i = 0;
+                if ($pos) {
+                    $orig_pos = $pos;
+                    $max = $block_size - $pos;
+                    if ($len >= $max) {
+                        $i = $max;
+                        $len -= $max;
+                        $pos = 0;
+                    } else {
+                        $i = $len;
+                        $pos += $len;
+                        $len = 0;
+                    }
+                    // ie. $i = min($max, $len), $len-= $i, $pos+= $i, $pos%= $blocksize
+                    $plaintext = substr($iv, $orig_pos) ^ $ciphertext;
+                    $iv = substr_replace($iv, substr($ciphertext, 0, $i), $orig_pos, $i);
+                }
+                while ($len >= $block_size) {
+                    $iv = $this->encryptBlock($iv);
+                    $cb = substr($ciphertext, $i, $block_size);
+                    $plaintext .= $iv ^ $cb;
+                    $iv = $cb;
+                    $len -= $block_size;
+                    $i += $block_size;
+                }
+                if ($len) {
+                    $iv = $this->encryptBlock($iv);
+                    $plaintext .= $iv ^ substr($ciphertext, $i);
+                    $iv = substr_replace($iv, substr($ciphertext, $i), 0, $len);
+                    $pos = $len;
+                }
+                break;
+            case self::MODE_CFB8:
+                $plaintext = '';
+                $len = strlen($ciphertext);
+                $iv = $this->decryptIV;
+
+                for ($i = 0; $i < $len; ++$i) {
+                    $plaintext .= $ciphertext[$i] ^ $this->encryptBlock($iv);
+                    $iv = substr($iv, 1) . $ciphertext[$i];
+                }
+
+                if ($this->continuousBuffer) {
+                    if ($len >= $block_size) {
+                        $this->decryptIV = substr($ciphertext, -$block_size);
+                    } else {
+                        $this->decryptIV = substr($this->decryptIV, $len - $block_size) . substr($ciphertext, -$len);
+                    }
+                }
+                break;
+            case self::MODE_OFB8:
+                $plaintext = '';
+                $len = strlen($ciphertext);
+                $iv = $this->decryptIV;
+
+                for ($i = 0; $i < $len; ++$i) {
+                    $xor = $this->encryptBlock($iv);
+                    $plaintext .= $ciphertext[$i] ^ $xor;
+                    $iv = substr($iv, 1) . $xor[0];
+                }
+
+                if ($this->continuousBuffer) {
+                    $this->decryptIV = $iv;
+                }
+                break;
+            case self::MODE_OFB:
+                $xor = $this->decryptIV;
+                if (strlen($buffer['xor'])) {
+                    for ($i = 0; $i < strlen($ciphertext); $i += $block_size) {
+                        $block = substr($ciphertext, $i, $block_size);
+                        if (strlen($block) > strlen($buffer['xor'])) {
+                            $xor = $this->encryptBlock($xor);
+                            $buffer['xor'] .= $xor;
+                        }
+                        $key = Strings::shift($buffer['xor'], $block_size);
+                        $plaintext .= $block ^ $key;
+                    }
+                } else {
+                    for ($i = 0; $i < strlen($ciphertext); $i += $block_size) {
+                        $xor = $this->encryptBlock($xor);
+                        $plaintext .= substr($ciphertext, $i, $block_size) ^ $xor;
+                    }
+                    $key = $xor;
+                }
+                if ($this->continuousBuffer) {
+                    $this->decryptIV = $xor;
+                    if ($start = strlen($ciphertext) % $block_size) {
+                        $buffer['xor'] = substr($key, $start) . $buffer['xor'];
+                    }
+                }
+                break;
+            case self::MODE_STREAM:
+                $plaintext = $this->decryptBlock($ciphertext);
+                break;
+        }
+        return $this->paddable ? $this->unpad($plaintext) : $plaintext;
+    }
+
+    /**
+     * Get the authentication tag
+     *
+     * Only used in GCM or Poly1305 mode
+     *
+     * @see self::encrypt()
+     * @param int $length optional
+     * @return string
+     * @throws \LengthException if $length isn't of a sufficient length
+     * @throws \RuntimeException if GCM mode isn't being used
+     */
+    public function getTag($length = 16)
+    {
+        if ($this->mode != self::MODE_GCM && !$this->usePoly1305) {
+            throw new \BadMethodCallException('Authentication tags are only utilized in GCM mode or with Poly1305');
+        }
+
+        if ($this->newtag === false) {
+            throw new \BadMethodCallException('A tag can only be returned after a round of encryption has been performed');
+        }
+
+        // the tag is 128-bits. it can't be greater than 16 bytes because that's bigger than the tag is. if it
+        // were 0 you might as well be doing CTR and less than 4 provides minimal security that could be trivially
+        // easily brute forced.
+        // see https://nvlpubs.nist.gov/nistpubs/Legacy/SP/nistspecialpublication800-38d.pdf#page=36
+        // for more info
+        if ($length < 4 || $length > 16) {
+            throw new \LengthException('The authentication tag must be between 4 and 16 bytes long');
+        }
+
+        return $length == 16 ?
+            $this->newtag :
+            substr($this->newtag, 0, $length);
+    }
+
+    /**
+     * Sets the authentication tag
+     *
+     * Only used in GCM mode
+     *
+     * @see self::decrypt()
+     * @param string $tag
+     * @throws \LengthException if $length isn't of a sufficient length
+     * @throws \RuntimeException if GCM mode isn't being used
+     */
+    public function setTag($tag)
+    {
+        if ($this->usePoly1305 && !isset($this->poly1305Key) && method_exists($this, 'createPoly1305Key')) {
+            $this->createPoly1305Key();
+        }
+
+        if ($this->mode != self::MODE_GCM && !$this->usePoly1305) {
+            throw new \BadMethodCallException('Authentication tags are only utilized in GCM mode or with Poly1305');
+        }
+
+        $length = strlen($tag);
+        if ($length < 4 || $length > 16) {
+            throw new \LengthException('The authentication tag must be between 4 and 16 bytes long');
+        }
+        $this->oldtag = $tag;
+    }
+
+    /**
+     * Get the IV
+     *
+     * mcrypt requires an IV even if ECB is used
+     *
+     * @see self::encrypt()
+     * @see self::decrypt()
+     * @param string $iv
+     * @return string
+     */
+    protected function getIV($iv)
+    {
+        return $this->mode == self::MODE_ECB ? str_repeat("\0", $this->block_size) : $iv;
+    }
+
+    /**
+     * OpenSSL CTR Processor
+     *
+     * PHP's OpenSSL bindings do not operate in continuous mode so we'll wrap around it. Since the keystream
+     * for CTR is the same for both encrypting and decrypting this function is re-used by both SymmetricKey::encrypt()
+     * and SymmetricKey::decrypt(). Also, OpenSSL doesn't implement CTR for all of it's symmetric ciphers so this
+     * function will emulate CTR with ECB when necessary.
+     *
+     * @see self::encrypt()
+     * @see self::decrypt()
+     * @param string $plaintext
+     * @param string $encryptIV
+     * @param array $buffer
+     * @return string
+     */
+    private function openssl_ctr_process($plaintext, &$encryptIV, &$buffer)
+    {
+        $ciphertext = '';
+
+        $block_size = $this->block_size;
+        $key = $this->key;
+
+        if ($this->openssl_emulate_ctr) {
+            $xor = $encryptIV;
+            if (strlen($buffer['ciphertext'])) {
+                for ($i = 0; $i < strlen($plaintext); $i += $block_size) {
+                    $block = substr($plaintext, $i, $block_size);
+                    if (strlen($block) > strlen($buffer['ciphertext'])) {
+                        $buffer['ciphertext'] .= openssl_encrypt($xor, $this->cipher_name_openssl_ecb, $key, OPENSSL_RAW_DATA | OPENSSL_ZERO_PADDING);
+                    }
+                    Strings::increment_str($xor);
+                    $otp = Strings::shift($buffer['ciphertext'], $block_size);
+                    $ciphertext .= $block ^ $otp;
+                }
+            } else {
+                for ($i = 0; $i < strlen($plaintext); $i += $block_size) {
+                    $block = substr($plaintext, $i, $block_size);
+                    $otp = openssl_encrypt($xor, $this->cipher_name_openssl_ecb, $key, OPENSSL_RAW_DATA | OPENSSL_ZERO_PADDING);
+                    Strings::increment_str($xor);
+                    $ciphertext .= $block ^ $otp;
+                }
+            }
+            if ($this->continuousBuffer) {
+                $encryptIV = $xor;
+                if ($start = strlen($plaintext) % $block_size) {
+                    $buffer['ciphertext'] = substr($key, $start) . $buffer['ciphertext'];
+                }
+            }
+
+            return $ciphertext;
+        }
+
+        if (strlen($buffer['ciphertext'])) {
+            $ciphertext = $plaintext ^ Strings::shift($buffer['ciphertext'], strlen($plaintext));
+            $plaintext = substr($plaintext, strlen($ciphertext));
+
+            if (!strlen($plaintext)) {
+                return $ciphertext;
+            }
+        }
+
+        $overflow = strlen($plaintext) % $block_size;
+        if ($overflow) {
+            $plaintext2 = Strings::pop($plaintext, $overflow); // ie. trim $plaintext to a multiple of $block_size and put rest of $plaintext in $plaintext2
+            $encrypted = openssl_encrypt($plaintext . str_repeat("\0", $block_size), $this->cipher_name_openssl, $key, OPENSSL_RAW_DATA | OPENSSL_ZERO_PADDING, $encryptIV);
+            $temp = Strings::pop($encrypted, $block_size);
+            $ciphertext .= $encrypted . ($plaintext2 ^ $temp);
+            if ($this->continuousBuffer) {
+                $buffer['ciphertext'] = substr($temp, $overflow);
+                $encryptIV = $temp;
+            }
+        } elseif (!strlen($buffer['ciphertext'])) {
+            $ciphertext .= openssl_encrypt($plaintext . str_repeat("\0", $block_size), $this->cipher_name_openssl, $key, OPENSSL_RAW_DATA | OPENSSL_ZERO_PADDING, $encryptIV);
+            $temp = Strings::pop($ciphertext, $block_size);
+            if ($this->continuousBuffer) {
+                $encryptIV = $temp;
+            }
+        }
+        if ($this->continuousBuffer) {
+            $encryptIV = openssl_decrypt($encryptIV, $this->cipher_name_openssl_ecb, $key, OPENSSL_RAW_DATA | OPENSSL_ZERO_PADDING);
+            if ($overflow) {
+                Strings::increment_str($encryptIV);
+            }
+        }
+
+        return $ciphertext;
+    }
+
+    /**
+     * OpenSSL OFB Processor
+     *
+     * PHP's OpenSSL bindings do not operate in continuous mode so we'll wrap around it. Since the keystream
+     * for OFB is the same for both encrypting and decrypting this function is re-used by both SymmetricKey::encrypt()
+     * and SymmetricKey::decrypt().
+     *
+     * @see self::encrypt()
+     * @see self::decrypt()
+     * @param string $plaintext
+     * @param string $encryptIV
+     * @param array $buffer
+     * @return string
+     */
+    private function openssl_ofb_process($plaintext, &$encryptIV, &$buffer)
+    {
+        if (strlen($buffer['xor'])) {
+            $ciphertext = $plaintext ^ $buffer['xor'];
+            $buffer['xor'] = substr($buffer['xor'], strlen($ciphertext));
+            $plaintext = substr($plaintext, strlen($ciphertext));
+        } else {
+            $ciphertext = '';
+        }
+
+        $block_size = $this->block_size;
+
+        $len = strlen($plaintext);
+        $key = $this->key;
+        $overflow = $len % $block_size;
+
+        if (strlen($plaintext)) {
+            if ($overflow) {
+                $ciphertext .= openssl_encrypt(substr($plaintext, 0, -$overflow) . str_repeat("\0", $block_size), $this->cipher_name_openssl, $key, OPENSSL_RAW_DATA | OPENSSL_ZERO_PADDING, $encryptIV);
+                $xor = Strings::pop($ciphertext, $block_size);
+                if ($this->continuousBuffer) {
+                    $encryptIV = $xor;
+                }
+                $ciphertext .= Strings::shift($xor, $overflow) ^ substr($plaintext, -$overflow);
+                if ($this->continuousBuffer) {
+                    $buffer['xor'] = $xor;
+                }
+            } else {
+                $ciphertext = openssl_encrypt($plaintext, $this->cipher_name_openssl, $key, OPENSSL_RAW_DATA | OPENSSL_ZERO_PADDING, $encryptIV);
+                if ($this->continuousBuffer) {
+                    $encryptIV = substr($ciphertext, -$block_size) ^ substr($plaintext, -$block_size);
+                }
+            }
+        }
+
+        return $ciphertext;
+    }
+
+    /**
+     * phpseclib <-> OpenSSL Mode Mapper
+     *
+     * May need to be overwritten by classes extending this one in some cases
+     *
+     * @return string
+     */
+    protected function openssl_translate_mode()
+    {
+        switch ($this->mode) {
+            case self::MODE_ECB:
+                return 'ecb';
+            case self::MODE_CBC:
+                return 'cbc';
+            case self::MODE_CTR:
+            case self::MODE_GCM:
+                return 'ctr';
+            case self::MODE_CFB:
+                return 'cfb';
+            case self::MODE_CFB8:
+                return 'cfb8';
+            case self::MODE_OFB:
+                return 'ofb';
+        }
+    }
+
+    /**
+     * Pad "packets".
+     *
+     * Block ciphers working by encrypting between their specified [$this->]block_size at a time
+     * If you ever need to encrypt or decrypt something that isn't of the proper length, it becomes necessary to
+     * pad the input so that it is of the proper length.
+     *
+     * Padding is enabled by default.  Sometimes, however, it is undesirable to pad strings.  Such is the case in SSH,
+     * where "packets" are padded with random bytes before being encrypted.  Unpad these packets and you risk stripping
+     * away characters that shouldn't be stripped away. (SSH knows how many bytes are added because the length is
+     * transmitted separately)
+     *
+     * @see self::disablePadding()
+     */
+    public function enablePadding()
+    {
+        $this->padding = true;
+    }
+
+    /**
+     * Do not pad packets.
+     *
+     * @see self::enablePadding()
+     */
+    public function disablePadding()
+    {
+        $this->padding = false;
+    }
+
+    /**
+     * Treat consecutive "packets" as if they are a continuous buffer.
+     *
+     * Say you have a 32-byte plaintext $plaintext.  Using the default behavior, the two following code snippets
+     * will yield different outputs:
+     *
+     * <code>
+     *    echo $rijndael->encrypt(substr($plaintext,  0, 16));
+     *    echo $rijndael->encrypt(substr($plaintext, 16, 16));
+     * </code>
+     * <code>
+     *    echo $rijndael->encrypt($plaintext);
+     * </code>
+     *
+     * The solution is to enable the continuous buffer.  Although this will resolve the above discrepancy, it creates
+     * another, as demonstrated with the following:
+     *
+     * <code>
+     *    $rijndael->encrypt(substr($plaintext, 0, 16));
+     *    echo $rijndael->decrypt($rijndael->encrypt(substr($plaintext, 16, 16)));
+     * </code>
+     * <code>
+     *    echo $rijndael->decrypt($rijndael->encrypt(substr($plaintext, 16, 16)));
+     * </code>
+     *
+     * With the continuous buffer disabled, these would yield the same output.  With it enabled, they yield different
+     * outputs.  The reason is due to the fact that the initialization vector's change after every encryption /
+     * decryption round when the continuous buffer is enabled.  When it's disabled, they remain constant.
+     *
+     * Put another way, when the continuous buffer is enabled, the state of the \phpseclib3\Crypt\*() object changes after each
+     * encryption / decryption round, whereas otherwise, it'd remain constant.  For this reason, it's recommended that
+     * continuous buffers not be used.  They do offer better security and are, in fact, sometimes required (SSH uses them),
+     * however, they are also less intuitive and more likely to cause you problems.
+     *
+     * {@internal Could, but not must, extend by the child Crypt_* class}
+     *
+     * @see self::disableContinuousBuffer()
+     */
+    public function enableContinuousBuffer()
+    {
+        if ($this->mode == self::MODE_ECB) {
+            return;
+        }
+
+        if ($this->mode == self::MODE_GCM) {
+            throw new \BadMethodCallException('This mode does not run in continuous mode');
+        }
+
+        $this->continuousBuffer = true;
+
+        $this->setEngine();
+    }
+
+    /**
+     * Treat consecutive packets as if they are a discontinuous buffer.
+     *
+     * The default behavior.
+     *
+     * {@internal Could, but not must, extend by the child Crypt_* class}
+     *
+     * @see self::enableContinuousBuffer()
+     */
+    public function disableContinuousBuffer()
+    {
+        if ($this->mode == self::MODE_ECB) {
+            return;
+        }
+        if (!$this->continuousBuffer) {
+            return;
+        }
+
+        $this->continuousBuffer = false;
+
+        $this->setEngine();
+    }
+
+    /**
+     * Test for engine validity
+     *
+     * @see self::__construct()
+     * @param int $engine
+     * @return bool
+     */
+    protected function isValidEngineHelper($engine)
+    {
+        switch ($engine) {
+            case self::ENGINE_OPENSSL:
+                $this->openssl_emulate_ctr = false;
+                $result = $this->cipher_name_openssl &&
+                          extension_loaded('openssl');
+                if (!$result) {
+                    return false;
+                }
+
+                $methods = openssl_get_cipher_methods();
+                if (in_array($this->cipher_name_openssl, $methods)) {
+                    return true;
+                }
+                // not all of openssl's symmetric cipher's support ctr. for those
+                // that don't we'll emulate it
+                switch ($this->mode) {
+                    case self::MODE_CTR:
+                        if (in_array($this->cipher_name_openssl_ecb, $methods)) {
+                            $this->openssl_emulate_ctr = true;
+                            return true;
+                        }
+                }
+                return false;
+            case self::ENGINE_MCRYPT:
+                set_error_handler(function () {
+                });
+                $result = $this->cipher_name_mcrypt &&
+                          extension_loaded('mcrypt') &&
+                          in_array($this->cipher_name_mcrypt, mcrypt_list_algorithms());
+                restore_error_handler();
+                return $result;
+            case self::ENGINE_EVAL:
+                return method_exists($this, 'setupInlineCrypt');
+            case self::ENGINE_INTERNAL:
+                return true;
+        }
+
+        return false;
+    }
+
+    /**
+     * Test for engine validity
+     *
+     * @see self::__construct()
+     * @param string $engine
+     * @return bool
+     */
+    public function isValidEngine($engine)
+    {
+        static $reverseMap;
+        if (!isset($reverseMap)) {
+            $reverseMap = array_map('strtolower', self::ENGINE_MAP);
+            $reverseMap = array_flip($reverseMap);
+        }
+        $engine = strtolower($engine);
+        if (!isset($reverseMap[$engine])) {
+            return false;
+        }
+
+        return $this->isValidEngineHelper($reverseMap[$engine]);
+    }
+
+    /**
+     * Sets the preferred crypt engine
+     *
+     * Currently, $engine could be:
+     *
+     * - libsodium[very fast]
+     *
+     * - OpenSSL  [very fast]
+     *
+     * - mcrypt   [fast]
+     *
+     * - Eval     [slow]
+     *
+     * - PHP      [slowest]
+     *
+     * If the preferred crypt engine is not available the fastest available one will be used
+     *
+     * @see self::__construct()
+     * @param string $engine
+     */
+    public function setPreferredEngine($engine)
+    {
+        static $reverseMap;
+        if (!isset($reverseMap)) {
+            $reverseMap = array_map('strtolower', self::ENGINE_MAP);
+            $reverseMap = array_flip($reverseMap);
+        }
+        $engine = is_string($engine) ? strtolower($engine) : '';
+        $this->preferredEngine = isset($reverseMap[$engine]) ? $reverseMap[$engine] : self::ENGINE_LIBSODIUM;
+
+        $this->setEngine();
+    }
+
+    /**
+     * Returns the engine currently being utilized
+     *
+     * @see self::setEngine()
+     */
+    public function getEngine()
+    {
+        return self::ENGINE_MAP[$this->engine];
+    }
+
+    /**
+     * Sets the engine as appropriate
+     *
+     * @see self::__construct()
+     */
+    protected function setEngine()
+    {
+        $this->engine = null;
+
+        $candidateEngines = [
+            self::ENGINE_LIBSODIUM,
+            self::ENGINE_OPENSSL_GCM,
+            self::ENGINE_OPENSSL,
+            self::ENGINE_MCRYPT,
+            self::ENGINE_EVAL
+        ];
+        if (isset($this->preferredEngine)) {
+            $temp = [$this->preferredEngine];
+            $candidateEngines = array_merge(
+                $temp,
+                array_diff($candidateEngines, $temp)
+            );
+        }
+        foreach ($candidateEngines as $engine) {
+            if ($this->isValidEngineHelper($engine)) {
+                $this->engine = $engine;
+                break;
+            }
+        }
+        if (!$this->engine) {
+            $this->engine = self::ENGINE_INTERNAL;
+        }
+
+        if ($this->engine != self::ENGINE_MCRYPT && $this->enmcrypt) {
+            set_error_handler(function () {
+            });
+            // Closing the current mcrypt resource(s). _mcryptSetup() will, if needed,
+            // (re)open them with the module named in $this->cipher_name_mcrypt
+            mcrypt_module_close($this->enmcrypt);
+            mcrypt_module_close($this->demcrypt);
+            $this->enmcrypt = null;
+            $this->demcrypt = null;
+
+            if ($this->ecb) {
+                mcrypt_module_close($this->ecb);
+                $this->ecb = null;
+            }
+            restore_error_handler();
+        }
+
+        $this->changed = $this->nonIVChanged = true;
+    }
+
+    /**
+     * Encrypts a block
+     *
+     * Note: Must be extended by the child \phpseclib3\Crypt\* class
+     *
+     * @param string $in
+     * @return string
+     */
+    abstract protected function encryptBlock($in);
+
+    /**
+     * Decrypts a block
+     *
+     * Note: Must be extended by the child \phpseclib3\Crypt\* class
+     *
+     * @param string $in
+     * @return string
+     */
+    abstract protected function decryptBlock($in);
+
+    /**
+     * Setup the key (expansion)
+     *
+     * Only used if $engine == self::ENGINE_INTERNAL
+     *
+     * Note: Must extend by the child \phpseclib3\Crypt\* class
+     *
+     * @see self::setup()
+     */
+    abstract protected function setupKey();
+
+    /**
+     * Setup the self::ENGINE_INTERNAL $engine
+     *
+     * (re)init, if necessary, the internal cipher $engine and flush all $buffers
+     * Used (only) if $engine == self::ENGINE_INTERNAL
+     *
+     * _setup() will be called each time if $changed === true
+     * typically this happens when using one or more of following public methods:
+     *
+     * - setKey()
+     *
+     * - setIV()
+     *
+     * - disableContinuousBuffer()
+     *
+     * - First run of encrypt() / decrypt() with no init-settings
+     *
+     * {@internal setup() is always called before en/decryption.}
+     *
+     * {@internal Could, but not must, extend by the child Crypt_* class}
+     *
+     * @see self::setKey()
+     * @see self::setIV()
+     * @see self::disableContinuousBuffer()
+     */
+    protected function setup()
+    {
+        if (!$this->changed) {
+            return;
+        }
+
+        $this->changed = false;
+
+        if ($this->usePoly1305 && !isset($this->poly1305Key) && method_exists($this, 'createPoly1305Key')) {
+            $this->createPoly1305Key();
+        }
+
+        $this->enbuffer = $this->debuffer = ['ciphertext' => '', 'xor' => '', 'pos' => 0, 'enmcrypt_init' => true];
+        //$this->newtag = $this->oldtag = false;
+
+        if ($this->usesNonce()) {
+            if ($this->nonce === false) {
+                throw new InsufficientSetupException('No nonce has been defined');
+            }
+            if ($this->mode == self::MODE_GCM && !in_array($this->engine, [self::ENGINE_LIBSODIUM, self::ENGINE_OPENSSL_GCM])) {
+                $this->setupGCM();
+            }
+        } else {
+            $this->iv = $this->origIV;
+        }
+
+        if ($this->iv === false && !in_array($this->mode, [self::MODE_STREAM, self::MODE_ECB])) {
+            if ($this->mode != self::MODE_GCM || !in_array($this->engine, [self::ENGINE_LIBSODIUM, self::ENGINE_OPENSSL_GCM])) {
+                throw new InsufficientSetupException('No IV has been defined');
+            }
+        }
+
+        if ($this->key === false) {
+            throw new InsufficientSetupException('No key has been defined');
+        }
+
+        $this->encryptIV = $this->decryptIV = $this->iv;
+
+        switch ($this->engine) {
+            case self::ENGINE_MCRYPT:
+                $this->enchanged = $this->dechanged = true;
+
+                set_error_handler(function () {
+                });
+
+                if (!isset($this->enmcrypt)) {
+                    static $mcrypt_modes = [
+                        self::MODE_CTR    => 'ctr',
+                        self::MODE_ECB    => MCRYPT_MODE_ECB,
+                        self::MODE_CBC    => MCRYPT_MODE_CBC,
+                        self::MODE_CFB    => 'ncfb',
+                        self::MODE_CFB8   => MCRYPT_MODE_CFB,
+                        self::MODE_OFB    => MCRYPT_MODE_NOFB,
+                        self::MODE_OFB8   => MCRYPT_MODE_OFB,
+                        self::MODE_STREAM => MCRYPT_MODE_STREAM,
+                    ];
+
+                    $this->demcrypt = mcrypt_module_open($this->cipher_name_mcrypt, '', $mcrypt_modes[$this->mode], '');
+                    $this->enmcrypt = mcrypt_module_open($this->cipher_name_mcrypt, '', $mcrypt_modes[$this->mode], '');
+
+                    // we need the $ecb mcrypt resource (only) in MODE_CFB with enableContinuousBuffer()
+                    // to workaround mcrypt's broken ncfb implementation in buffered mode
+                    // see: {@link http://phpseclib.sourceforge.net/cfb-demo.phps}
+                    if ($this->mode == self::MODE_CFB) {
+                        $this->ecb = mcrypt_module_open($this->cipher_name_mcrypt, '', MCRYPT_MODE_ECB, '');
+                    }
+                } // else should mcrypt_generic_deinit be called?
+
+                if ($this->mode == self::MODE_CFB) {
+                    mcrypt_generic_init($this->ecb, $this->key, str_repeat("\0", $this->block_size));
+                }
+
+                restore_error_handler();
+
+                break;
+            case self::ENGINE_INTERNAL:
+                $this->setupKey();
+                break;
+            case self::ENGINE_EVAL:
+                if ($this->nonIVChanged) {
+                    $this->setupKey();
+                    $this->setupInlineCrypt();
+                }
+        }
+
+        $this->nonIVChanged = false;
+    }
+
+    /**
+     * Pads a string
+     *
+     * Pads a string using the RSA PKCS padding standards so that its length is a multiple of the blocksize.
+     * $this->block_size - (strlen($text) % $this->block_size) bytes are added, each of which is equal to
+     * chr($this->block_size - (strlen($text) % $this->block_size)
+     *
+     * If padding is disabled and $text is not a multiple of the blocksize, the string will be padded regardless
+     * and padding will, hence forth, be enabled.
+     *
+     * @see self::unpad()
+     * @param string $text
+     * @throws \LengthException if padding is disabled and the plaintext's length is not a multiple of the block size
+     * @return string
+     */
+    protected function pad($text)
+    {
+        $length = strlen($text);
+
+        if (!$this->padding) {
+            if ($length % $this->block_size == 0) {
+                return $text;
+            } else {
+                throw new \LengthException("The plaintext's length ($length) is not a multiple of the block size ({$this->block_size}). Try enabling padding.");
+            }
+        }
+
+        $pad = $this->block_size - ($length % $this->block_size);
+
+        return str_pad($text, $length + $pad, chr($pad));
+    }
+
+    /**
+     * Unpads a string.
+     *
+     * If padding is enabled and the reported padding length is invalid the encryption key will be assumed to be wrong
+     * and false will be returned.
+     *
+     * @see self::pad()
+     * @param string $text
+     * @throws \LengthException if the ciphertext's length is not a multiple of the block size
+     * @return string
+     */
+    protected function unpad($text)
+    {
+        if (!$this->padding) {
+            return $text;
+        }
+
+        $length = ord($text[strlen($text) - 1]);
+
+        if (!$length || $length > $this->block_size) {
+            throw new BadDecryptionException("The ciphertext has an invalid padding length ($length) compared to the block size ({$this->block_size})");
+        }
+
+        return substr($text, 0, -$length);
+    }
+
+    /**
+     * Setup the performance-optimized function for de/encrypt()
+     *
+     * Stores the created (or existing) callback function-name
+     * in $this->inline_crypt
+     *
+     * Internally for phpseclib developers:
+     *
+     *     _setupInlineCrypt() would be called only if:
+     *
+     *     - $this->engine === self::ENGINE_EVAL
+     *
+     *     - each time on _setup(), after(!) _setupKey()
+     *
+     *
+     *     This ensures that _setupInlineCrypt() has always a
+     *     full ready2go initializated internal cipher $engine state
+     *     where, for example, the keys already expanded,
+     *     keys/block_size calculated and such.
+     *
+     *     It is, each time if called, the responsibility of _setupInlineCrypt():
+     *
+     *     - to set $this->inline_crypt to a valid and fully working callback function
+     *       as a (faster) replacement for encrypt() / decrypt()
+     *
+     *     - NOT to create unlimited callback functions (for memory reasons!)
+     *       no matter how often _setupInlineCrypt() would be called. At some
+     *       point of amount they must be generic re-useable.
+     *
+     *     - the code of _setupInlineCrypt() it self,
+     *       and the generated callback code,
+     *       must be, in following order:
+     *       - 100% safe
+     *       - 100% compatible to encrypt()/decrypt()
+     *       - using only php5+ features/lang-constructs/php-extensions if
+     *         compatibility (down to php4) or fallback is provided
+     *       - readable/maintainable/understandable/commented and... not-cryptic-styled-code :-)
+     *       - >= 10% faster than encrypt()/decrypt() [which is, by the way,
+     *         the reason for the existence of _setupInlineCrypt() :-)]
+     *       - memory-nice
+     *       - short (as good as possible)
+     *
+     * Note: - _setupInlineCrypt() is using _createInlineCryptFunction() to create the full callback function code.
+     *       - In case of using inline crypting, _setupInlineCrypt() must extend by the child \phpseclib3\Crypt\* class.
+     *       - The following variable names are reserved:
+     *         - $_*  (all variable names prefixed with an underscore)
+     *         - $self (object reference to it self. Do not use $this, but $self instead)
+     *         - $in (the content of $in has to en/decrypt by the generated code)
+     *       - The callback function should not use the 'return' statement, but en/decrypt'ing the content of $in only
+     *
+     * {@internal If a Crypt_* class providing inline crypting it must extend _setupInlineCrypt()}
+     *
+     * @see self::setup()
+     * @see self::createInlineCryptFunction()
+     * @see self::encrypt()
+     * @see self::decrypt()
+     */
+    //protected function setupInlineCrypt();
+
+    /**
+     * Creates the performance-optimized function for en/decrypt()
+     *
+     * Internally for phpseclib developers:
+     *
+     *    _createInlineCryptFunction():
+     *
+     *    - merge the $cipher_code [setup'ed by _setupInlineCrypt()]
+     *      with the current [$this->]mode of operation code
+     *
+     *    - create the $inline function, which called by encrypt() / decrypt()
+     *      as its replacement to speed up the en/decryption operations.
+     *
+     *    - return the name of the created $inline callback function
+     *
+     *    - used to speed up en/decryption
+     *
+     *
+     *
+     *    The main reason why can speed up things [up to 50%] this way are:
+     *
+     *    - using variables more effective then regular.
+     *      (ie no use of expensive arrays but integers $k_0, $k_1 ...
+     *      or even, for example, the pure $key[] values hardcoded)
+     *
+     *    - avoiding 1000's of function calls of ie _encryptBlock()
+     *      but inlining the crypt operations.
+     *      in the mode of operation for() loop.
+     *
+     *    - full loop unroll the (sometimes key-dependent) rounds
+     *      avoiding this way ++$i counters and runtime-if's etc...
+     *
+     *    The basic code architectur of the generated $inline en/decrypt()
+     *    lambda function, in pseudo php, is:
+     *
+     *    <code>
+     *    +----------------------------------------------------------------------------------------------+
+     *    | callback $inline = create_function:                                                          |
+     *    | lambda_function_0001_crypt_ECB($action, $text)                                               |
+     *    | {                                                                                            |
+     *    |     INSERT PHP CODE OF:                                                                      |
+     *    |     $cipher_code['init_crypt'];                  // general init code.                       |
+     *    |                                                  // ie: $sbox'es declarations used for       |
+     *    |                                                  //     encrypt and decrypt'ing.             |
+     *    |                                                                                              |
+     *    |     switch ($action) {                                                                       |
+     *    |         case 'encrypt':                                                                      |
+     *    |             INSERT PHP CODE OF:                                                              |
+     *    |             $cipher_code['init_encrypt'];       // encrypt sepcific init code.               |
+     *    |                                                    ie: specified $key or $box                |
+     *    |                                                        declarations for encrypt'ing.         |
+     *    |                                                                                              |
+     *    |             foreach ($ciphertext) {                                                          |
+     *    |                 $in = $block_size of $ciphertext;                                            |
+     *    |                                                                                              |
+     *    |                 INSERT PHP CODE OF:                                                          |
+     *    |                 $cipher_code['encrypt_block'];  // encrypt's (string) $in, which is always:  |
+     *    |                                                 // strlen($in) == $this->block_size          |
+     *    |                                                 // here comes the cipher algorithm in action |
+     *    |                                                 // for encryption.                           |
+     *    |                                                 // $cipher_code['encrypt_block'] has to      |
+     *    |                                                 // encrypt the content of the $in variable   |
+     *    |                                                                                              |
+     *    |                 $plaintext .= $in;                                                           |
+     *    |             }                                                                                |
+     *    |             return $plaintext;                                                               |
+     *    |                                                                                              |
+     *    |         case 'decrypt':                                                                      |
+     *    |             INSERT PHP CODE OF:                                                              |
+     *    |             $cipher_code['init_decrypt'];       // decrypt sepcific init code                |
+     *    |                                                    ie: specified $key or $box                |
+     *    |                                                        declarations for decrypt'ing.         |
+     *    |             foreach ($plaintext) {                                                           |
+     *    |                 $in = $block_size of $plaintext;                                             |
+     *    |                                                                                              |
+     *    |                 INSERT PHP CODE OF:                                                          |
+     *    |                 $cipher_code['decrypt_block'];  // decrypt's (string) $in, which is always   |
+     *    |                                                 // strlen($in) == $this->block_size          |
+     *    |                                                 // here comes the cipher algorithm in action |
+     *    |                                                 // for decryption.                           |
+     *    |                                                 // $cipher_code['decrypt_block'] has to      |
+     *    |                                                 // decrypt the content of the $in variable   |
+     *    |                 $ciphertext .= $in;                                                          |
+     *    |             }                                                                                |
+     *    |             return $ciphertext;                                                              |
+     *    |     }                                                                                        |
+     *    | }                                                                                            |
+     *    +----------------------------------------------------------------------------------------------+
+     *    </code>
+     *
+     *    See also the \phpseclib3\Crypt\*::_setupInlineCrypt()'s for
+     *    productive inline $cipher_code's how they works.
+     *
+     *    Structure of:
+     *    <code>
+     *    $cipher_code = [
+     *        'init_crypt'    => (string) '', // optional
+     *        'init_encrypt'  => (string) '', // optional
+     *        'init_decrypt'  => (string) '', // optional
+     *        'encrypt_block' => (string) '', // required
+     *        'decrypt_block' => (string) ''  // required
+     *    ];
+     *    </code>
+     *
+     * @see self::setupInlineCrypt()
+     * @see self::encrypt()
+     * @see self::decrypt()
+     * @param array $cipher_code
+     * @return string (the name of the created callback function)
+     */
+    protected function createInlineCryptFunction($cipher_code)
+    {
+        $block_size = $this->block_size;
+
+        // optional
+        $init_crypt    = isset($cipher_code['init_crypt'])    ? $cipher_code['init_crypt']    : '';
+        $init_encrypt  = isset($cipher_code['init_encrypt'])  ? $cipher_code['init_encrypt']  : '';
+        $init_decrypt  = isset($cipher_code['init_decrypt'])  ? $cipher_code['init_decrypt']  : '';
+        // required
+        $encrypt_block = $cipher_code['encrypt_block'];
+        $decrypt_block = $cipher_code['decrypt_block'];
+
+        // Generating mode of operation inline code,
+        // merged with the $cipher_code algorithm
+        // for encrypt- and decryption.
+        switch ($this->mode) {
+            case self::MODE_ECB:
+                $encrypt = $init_encrypt . '
+                    $_ciphertext = "";
+                    $_plaintext_len = strlen($_text);
+
+                    for ($_i = 0; $_i < $_plaintext_len; $_i+= ' . $block_size . ') {
+                        $in = substr($_text, $_i, ' . $block_size . ');
+                        ' . $encrypt_block . '
+                        $_ciphertext.= $in;
+                    }
+
+                    return $_ciphertext;
+                    ';
+
+                $decrypt = $init_decrypt . '
+                    $_plaintext = "";
+                    $_text = str_pad($_text, strlen($_text) + (' . $block_size . ' - strlen($_text) % ' . $block_size . ') % ' . $block_size . ', chr(0));
+                    $_ciphertext_len = strlen($_text);
+
+                    for ($_i = 0; $_i < $_ciphertext_len; $_i+= ' . $block_size . ') {
+                        $in = substr($_text, $_i, ' . $block_size . ');
+                        ' . $decrypt_block . '
+                        $_plaintext.= $in;
+                    }
+
+                    return $this->unpad($_plaintext);
+                    ';
+                break;
+            case self::MODE_CTR:
+                $encrypt = $init_encrypt . '
+                    $_ciphertext = "";
+                    $_plaintext_len = strlen($_text);
+                    $_xor = $this->encryptIV;
+                    $_buffer = &$this->enbuffer;
+                    if (strlen($_buffer["ciphertext"])) {
+                        for ($_i = 0; $_i < $_plaintext_len; $_i+= ' . $block_size . ') {
+                            $_block = substr($_text, $_i, ' . $block_size . ');
+                            if (strlen($_block) > strlen($_buffer["ciphertext"])) {
+                                $in = $_xor;
+                                ' . $encrypt_block . '
+                                \phpseclib3\Common\Functions\Strings::increment_str($_xor);
+                                $_buffer["ciphertext"].= $in;
+                            }
+                            $_key = \phpseclib3\Common\Functions\Strings::shift($_buffer["ciphertext"], ' . $block_size . ');
+                            $_ciphertext.= $_block ^ $_key;
+                        }
+                    } else {
+                        for ($_i = 0; $_i < $_plaintext_len; $_i+= ' . $block_size . ') {
+                            $_block = substr($_text, $_i, ' . $block_size . ');
+                            $in = $_xor;
+                            ' . $encrypt_block . '
+                            \phpseclib3\Common\Functions\Strings::increment_str($_xor);
+                            $_key = $in;
+                            $_ciphertext.= $_block ^ $_key;
+                        }
+                    }
+                    if ($this->continuousBuffer) {
+                        $this->encryptIV = $_xor;
+                        if ($_start = $_plaintext_len % ' . $block_size . ') {
+                            $_buffer["ciphertext"] = substr($_key, $_start) . $_buffer["ciphertext"];
+                        }
+                    }
+
+                    return $_ciphertext;
+                ';
+
+                $decrypt = $init_encrypt . '
+                    $_plaintext = "";
+                    $_ciphertext_len = strlen($_text);
+                    $_xor = $this->decryptIV;
+                    $_buffer = &$this->debuffer;
+
+                    if (strlen($_buffer["ciphertext"])) {
+                        for ($_i = 0; $_i < $_ciphertext_len; $_i+= ' . $block_size . ') {
+                            $_block = substr($_text, $_i, ' . $block_size . ');
+                            if (strlen($_block) > strlen($_buffer["ciphertext"])) {
+                                $in = $_xor;
+                                ' . $encrypt_block . '
+                                \phpseclib3\Common\Functions\Strings::increment_str($_xor);
+                                $_buffer["ciphertext"].= $in;
+                            }
+                            $_key = \phpseclib3\Common\Functions\Strings::shift($_buffer["ciphertext"], ' . $block_size . ');
+                            $_plaintext.= $_block ^ $_key;
+                        }
+                    } else {
+                        for ($_i = 0; $_i < $_ciphertext_len; $_i+= ' . $block_size . ') {
+                            $_block = substr($_text, $_i, ' . $block_size . ');
+                            $in = $_xor;
+                            ' . $encrypt_block . '
+                            \phpseclib3\Common\Functions\Strings::increment_str($_xor);
+                            $_key = $in;
+                            $_plaintext.= $_block ^ $_key;
+                        }
+                    }
+                    if ($this->continuousBuffer) {
+                        $this->decryptIV = $_xor;
+                        if ($_start = $_ciphertext_len % ' . $block_size . ') {
+                            $_buffer["ciphertext"] = substr($_key, $_start) . $_buffer["ciphertext"];
+                        }
+                    }
+
+                    return $_plaintext;
+                    ';
+                break;
+            case self::MODE_CFB:
+                $encrypt = $init_encrypt . '
+                    $_ciphertext = "";
+                    $_buffer = &$this->enbuffer;
+
+                    if ($this->continuousBuffer) {
+                        $_iv = &$this->encryptIV;
+                        $_pos = &$_buffer["pos"];
+                    } else {
+                        $_iv = $this->encryptIV;
+                        $_pos = 0;
+                    }
+                    $_len = strlen($_text);
+                    $_i = 0;
+                    if ($_pos) {
+                        $_orig_pos = $_pos;
+                        $_max = ' . $block_size . ' - $_pos;
+                        if ($_len >= $_max) {
+                            $_i = $_max;
+                            $_len-= $_max;
+                            $_pos = 0;
+                        } else {
+                            $_i = $_len;
+                            $_pos+= $_len;
+                            $_len = 0;
+                        }
+                        $_ciphertext = substr($_iv, $_orig_pos) ^ $_text;
+                        $_iv = substr_replace($_iv, $_ciphertext, $_orig_pos, $_i);
+                    }
+                    while ($_len >= ' . $block_size . ') {
+                        $in = $_iv;
+                        ' . $encrypt_block . ';
+                        $_iv = $in ^ substr($_text, $_i, ' . $block_size . ');
+                        $_ciphertext.= $_iv;
+                        $_len-= ' . $block_size . ';
+                        $_i+= ' . $block_size . ';
+                    }
+                    if ($_len) {
+                        $in = $_iv;
+                        ' . $encrypt_block . '
+                        $_iv = $in;
+                        $_block = $_iv ^ substr($_text, $_i);
+                        $_iv = substr_replace($_iv, $_block, 0, $_len);
+                        $_ciphertext.= $_block;
+                        $_pos = $_len;
+                    }
+                    return $_ciphertext;
+                ';
+
+                $decrypt = $init_encrypt . '
+                    $_plaintext = "";
+                    $_buffer = &$this->debuffer;
+
+                    if ($this->continuousBuffer) {
+                        $_iv = &$this->decryptIV;
+                        $_pos = &$_buffer["pos"];
+                    } else {
+                        $_iv = $this->decryptIV;
+                        $_pos = 0;
+                    }
+                    $_len = strlen($_text);
+                    $_i = 0;
+                    if ($_pos) {
+                        $_orig_pos = $_pos;
+                        $_max = ' . $block_size . ' - $_pos;
+                        if ($_len >= $_max) {
+                            $_i = $_max;
+                            $_len-= $_max;
+                            $_pos = 0;
+                        } else {
+                            $_i = $_len;
+                            $_pos+= $_len;
+                            $_len = 0;
+                        }
+                        $_plaintext = substr($_iv, $_orig_pos) ^ $_text;
+                        $_iv = substr_replace($_iv, substr($_text, 0, $_i), $_orig_pos, $_i);
+                    }
+                    while ($_len >= ' . $block_size . ') {
+                        $in = $_iv;
+                        ' . $encrypt_block . '
+                        $_iv = $in;
+                        $cb = substr($_text, $_i, ' . $block_size . ');
+                        $_plaintext.= $_iv ^ $cb;
+                        $_iv = $cb;
+                        $_len-= ' . $block_size . ';
+                        $_i+= ' . $block_size . ';
+                    }
+                    if ($_len) {
+                        $in = $_iv;
+                        ' . $encrypt_block . '
+                        $_iv = $in;
+                        $_plaintext.= $_iv ^ substr($_text, $_i);
+                        $_iv = substr_replace($_iv, substr($_text, $_i), 0, $_len);
+                        $_pos = $_len;
+                    }
+
+                    return $_plaintext;
+                    ';
+                break;
+            case self::MODE_CFB8:
+                $encrypt = $init_encrypt . '
+                    $_ciphertext = "";
+                    $_len = strlen($_text);
+                    $_iv = $this->encryptIV;
+
+                    for ($_i = 0; $_i < $_len; ++$_i) {
+                        $in = $_iv;
+                        ' . $encrypt_block . '
+                        $_ciphertext .= ($_c = $_text[$_i] ^ $in);
+                        $_iv = substr($_iv, 1) . $_c;
+                    }
+
+                    if ($this->continuousBuffer) {
+                        if ($_len >= ' . $block_size . ') {
+                            $this->encryptIV = substr($_ciphertext, -' . $block_size . ');
+                        } else {
+                            $this->encryptIV = substr($this->encryptIV, $_len - ' . $block_size . ') . substr($_ciphertext, -$_len);
+                        }
+                    }
+
+                    return $_ciphertext;
+                    ';
+                $decrypt = $init_encrypt . '
+                    $_plaintext = "";
+                    $_len = strlen($_text);
+                    $_iv = $this->decryptIV;
+
+                    for ($_i = 0; $_i < $_len; ++$_i) {
+                        $in = $_iv;
+                        ' . $encrypt_block . '
+                        $_plaintext .= $_text[$_i] ^ $in;
+                        $_iv = substr($_iv, 1) . $_text[$_i];
+                    }
+
+                    if ($this->continuousBuffer) {
+                        if ($_len >= ' . $block_size . ') {
+                            $this->decryptIV = substr($_text, -' . $block_size . ');
+                        } else {
+                            $this->decryptIV = substr($this->decryptIV, $_len - ' . $block_size . ') . substr($_text, -$_len);
+                        }
+                    }
+
+                    return $_plaintext;
+                    ';
+                break;
+            case self::MODE_OFB8:
+                $encrypt = $init_encrypt . '
+                    $_ciphertext = "";
+                    $_len = strlen($_text);
+                    $_iv = $this->encryptIV;
+
+                    for ($_i = 0; $_i < $_len; ++$_i) {
+                        $in = $_iv;
+                        ' . $encrypt_block . '
+                        $_ciphertext.= $_text[$_i] ^ $in;
+                        $_iv = substr($_iv, 1) . $in[0];
+                    }
+
+                    if ($this->continuousBuffer) {
+                        $this->encryptIV = $_iv;
+                    }
+
+                    return $_ciphertext;
+                    ';
+                $decrypt = $init_encrypt . '
+                    $_plaintext = "";
+                    $_len = strlen($_text);
+                    $_iv = $this->decryptIV;
+
+                    for ($_i = 0; $_i < $_len; ++$_i) {
+                        $in = $_iv;
+                        ' . $encrypt_block . '
+                        $_plaintext.= $_text[$_i] ^ $in;
+                        $_iv = substr($_iv, 1) . $in[0];
+                    }
+
+                    if ($this->continuousBuffer) {
+                        $this->decryptIV = $_iv;
+                    }
+
+                    return $_plaintext;
+                    ';
+                break;
+            case self::MODE_OFB:
+                $encrypt = $init_encrypt . '
+                    $_ciphertext = "";
+                    $_plaintext_len = strlen($_text);
+                    $_xor = $this->encryptIV;
+                    $_buffer = &$this->enbuffer;
+
+                    if (strlen($_buffer["xor"])) {
+                        for ($_i = 0; $_i < $_plaintext_len; $_i+= ' . $block_size . ') {
+                            $_block = substr($_text, $_i, ' . $block_size . ');
+                            if (strlen($_block) > strlen($_buffer["xor"])) {
+                                $in = $_xor;
+                                ' . $encrypt_block . '
+                                $_xor = $in;
+                                $_buffer["xor"].= $_xor;
+                            }
+                            $_key = \phpseclib3\Common\Functions\Strings::shift($_buffer["xor"], ' . $block_size . ');
+                            $_ciphertext.= $_block ^ $_key;
+                        }
+                    } else {
+                        for ($_i = 0; $_i < $_plaintext_len; $_i+= ' . $block_size . ') {
+                            $in = $_xor;
+                            ' . $encrypt_block . '
+                            $_xor = $in;
+                            $_ciphertext.= substr($_text, $_i, ' . $block_size . ') ^ $_xor;
+                        }
+                        $_key = $_xor;
+                    }
+                    if ($this->continuousBuffer) {
+                        $this->encryptIV = $_xor;
+                        if ($_start = $_plaintext_len % ' . $block_size . ') {
+                             $_buffer["xor"] = substr($_key, $_start) . $_buffer["xor"];
+                        }
+                    }
+                    return $_ciphertext;
+                    ';
+
+                $decrypt = $init_encrypt . '
+                    $_plaintext = "";
+                    $_ciphertext_len = strlen($_text);
+                    $_xor = $this->decryptIV;
+                    $_buffer = &$this->debuffer;
+
+                    if (strlen($_buffer["xor"])) {
+                        for ($_i = 0; $_i < $_ciphertext_len; $_i+= ' . $block_size . ') {
+                            $_block = substr($_text, $_i, ' . $block_size . ');
+                            if (strlen($_block) > strlen($_buffer["xor"])) {
+                                $in = $_xor;
+                                ' . $encrypt_block . '
+                                $_xor = $in;
+                                $_buffer["xor"].= $_xor;
+                            }
+                            $_key = \phpseclib3\Common\Functions\Strings::shift($_buffer["xor"], ' . $block_size . ');
+                            $_plaintext.= $_block ^ $_key;
+                        }
+                    } else {
+                        for ($_i = 0; $_i < $_ciphertext_len; $_i+= ' . $block_size . ') {
+                            $in = $_xor;
+                            ' . $encrypt_block . '
+                            $_xor = $in;
+                            $_plaintext.= substr($_text, $_i, ' . $block_size . ') ^ $_xor;
+                        }
+                        $_key = $_xor;
+                    }
+                    if ($this->continuousBuffer) {
+                        $this->decryptIV = $_xor;
+                        if ($_start = $_ciphertext_len % ' . $block_size . ') {
+                             $_buffer["xor"] = substr($_key, $_start) . $_buffer["xor"];
+                        }
+                    }
+                    return $_plaintext;
+                    ';
+                break;
+            case self::MODE_STREAM:
+                $encrypt = $init_encrypt . '
+                    $_ciphertext = "";
+                    ' . $encrypt_block . '
+                    return $_ciphertext;
+                    ';
+                $decrypt = $init_decrypt . '
+                    $_plaintext = "";
+                    ' . $decrypt_block . '
+                    return $_plaintext;
+                    ';
+                break;
+            // case self::MODE_CBC:
+            default:
+                $encrypt = $init_encrypt . '
+                    $_ciphertext = "";
+                    $_plaintext_len = strlen($_text);
+
+                    $in = $this->encryptIV;
+
+                    for ($_i = 0; $_i < $_plaintext_len; $_i+= ' . $block_size . ') {
+                        $in = substr($_text, $_i, ' . $block_size . ') ^ $in;
+                        ' . $encrypt_block . '
+                        $_ciphertext.= $in;
+                    }
+
+                    if ($this->continuousBuffer) {
+                        $this->encryptIV = $in;
+                    }
+
+                    return $_ciphertext;
+                    ';
+
+                $decrypt = $init_decrypt . '
+                    $_plaintext = "";
+                    $_text = str_pad($_text, strlen($_text) + (' . $block_size . ' - strlen($_text) % ' . $block_size . ') % ' . $block_size . ', chr(0));
+                    $_ciphertext_len = strlen($_text);
+
+                    $_iv = $this->decryptIV;
+
+                    for ($_i = 0; $_i < $_ciphertext_len; $_i+= ' . $block_size . ') {
+                        $in = $_block = substr($_text, $_i, ' . $block_size . ');
+                        ' . $decrypt_block . '
+                        $_plaintext.= $in ^ $_iv;
+                        $_iv = $_block;
+                    }
+
+                    if ($this->continuousBuffer) {
+                        $this->decryptIV = $_iv;
+                    }
+
+                    return $this->unpad($_plaintext);
+                    ';
+                break;
+        }
+
+        // Before discrediting this, please read the following:
+        // @see https://github.com/phpseclib/phpseclib/issues/1293
+        // @see https://github.com/phpseclib/phpseclib/pull/1143
+        eval('$func = function ($_action, $_text) { ' . $init_crypt . 'if ($_action == "encrypt") { ' . $encrypt . ' } else { ' . $decrypt . ' }};');
+
+        return \Closure::bind($func, $this, static::class);
+    }
+
+    /**
+     * Convert float to int
+     *
+     * On ARM CPUs converting floats to ints doesn't always work
+     *
+     * @param string $x
+     * @return int
+     */
+    protected static function safe_intval($x)
+    {
+        if (is_int($x)) {
+            return $x;
+        }
+
+        if (self::$use_reg_intval) {
+            return PHP_INT_SIZE == 4 && PHP_VERSION_ID >= 80100 ? intval($x) : $x;
+        }
+
+        return (fmod($x, 0x80000000) & 0x7FFFFFFF) |
+            ((fmod(floor($x / 0x80000000), 2) & 1) << 31);
+    }
+
+    /**
+     * eval()'able string for in-line float to int
+     *
+     * @return string
+     */
+    protected static function safe_intval_inline()
+    {
+        if (self::$use_reg_intval) {
+            return PHP_INT_SIZE == 4 && PHP_VERSION_ID >= 80100 ? 'intval(%s)' : '%s';
+        }
+
+        $safeint = '(is_int($temp = %s) ? $temp : (fmod($temp, 0x80000000) & 0x7FFFFFFF) | ';
+        return $safeint . '((fmod(floor($temp / 0x80000000), 2) & 1) << 31))';
+    }
+
+    /**
+     * Sets up GCM parameters
+     *
+     * See steps 1-2 of https://nvlpubs.nist.gov/nistpubs/Legacy/SP/nistspecialpublication800-38d.pdf#page=23
+     * for more info
+     *
+     */
+    private function setupGCM()
+    {
+        // don't keep on re-calculating $this->h
+        if (!$this->h || $this->hKey != $this->key) {
+            $cipher = new static('ecb');
+            $cipher->setKey($this->key);
+            $cipher->disablePadding();
+
+            $this->h = self::$gcmField->newInteger(
+                Strings::switchEndianness($cipher->encrypt("\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"))
+            );
+            $this->hKey = $this->key;
+        }
+
+        if (strlen($this->nonce) == 12) {
+            $this->iv = $this->nonce . "\0\0\0\1";
+        } else {
+            $this->iv = $this->ghash(
+                self::nullPad128($this->nonce) . str_repeat("\0", 8) . self::len64($this->nonce)
+            );
+        }
+    }
+
+    /**
+     * Performs GHASH operation
+     *
+     * See https://nvlpubs.nist.gov/nistpubs/Legacy/SP/nistspecialpublication800-38d.pdf#page=20
+     * for more info
+     *
+     * @see self::decrypt()
+     * @see self::encrypt()
+     * @param string $x
+     * @return string
+     */
+    private function ghash($x)
+    {
+        $h = $this->h;
+        $y = ["\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"];
+        $x = str_split($x, 16);
+        $n = 0;
+        // the switchEndianness calls are necessary because the multiplication algorithm in BinaryField/Integer
+        // interprets strings as polynomials in big endian order whereas in GCM they're interpreted in little
+        // endian order per https://nvlpubs.nist.gov/nistpubs/Legacy/SP/nistspecialpublication800-38d.pdf#page=19.
+        // big endian order is what binary field elliptic curves use per http://www.secg.org/sec1-v2.pdf#page=18.
+
+        // we could switchEndianness here instead of in the while loop but doing so in the while loop seems like it
+        // might be slightly more performant
+        //$x = Strings::switchEndianness($x);
+        foreach ($x as $xn) {
+            $xn = Strings::switchEndianness($xn);
+            $t = $y[$n] ^ $xn;
+            $temp = self::$gcmField->newInteger($t);
+            $y[++$n] = $temp->multiply($h)->toBytes();
+            $y[$n] = substr($y[$n], 1);
+        }
+        $y[$n] = Strings::switchEndianness($y[$n]);
+        return $y[$n];
+    }
+
+    /**
+     * Returns the bit length of a string in a packed format
+     *
+     * @see self::decrypt()
+     * @see self::encrypt()
+     * @see self::setupGCM()
+     * @param string $str
+     * @return string
+     */
+    private static function len64($str)
+    {
+        return "\0\0\0\0" . pack('N', 8 * strlen($str));
+    }
+
+    /**
+     * NULL pads a string to be a multiple of 128
+     *
+     * @see self::decrypt()
+     * @see self::encrypt()
+     * @see self::setupGCM()
+     * @param string $str
+     * @return string
+     */
+    protected static function nullPad128($str)
+    {
+        $len = strlen($str);
+        return $str . str_repeat("\0", 16 * ceil($len / 16) - $len);
+    }
+
+    /**
+     * Calculates Poly1305 MAC
+     *
+     * On my system ChaCha20, with libsodium, takes 0.5s. With this custom Poly1305 implementation
+     * it takes 1.2s.
+     *
+     * @see self::decrypt()
+     * @see self::encrypt()
+     * @param string $text
+     * @return string
+     */
+    protected function poly1305($text)
+    {
+        $s = $this->poly1305Key; // strlen($this->poly1305Key) == 32
+        $r = Strings::shift($s, 16);
+        $r = strrev($r);
+        $r &= "\x0f\xff\xff\xfc\x0f\xff\xff\xfc\x0f\xff\xff\xfc\x0f\xff\xff\xff";
+        $s = strrev($s);
+
+        $r = self::$poly1305Field->newInteger(new BigInteger($r, 256));
+        $s = self::$poly1305Field->newInteger(new BigInteger($s, 256));
+        $a = self::$poly1305Field->newInteger(new BigInteger());
+
+        $blocks = str_split($text, 16);
+        foreach ($blocks as $block) {
+            $n = strrev($block . chr(1));
+            $n = self::$poly1305Field->newInteger(new BigInteger($n, 256));
+            $a = $a->add($n);
+            $a = $a->multiply($r);
+        }
+        $r = $a->toBigInteger()->add($s->toBigInteger());
+        $mask = "\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF";
+        return strrev($r->toBytes()) & $mask;
+    }
+
+    /**
+     * Return the mode
+     *
+     * You can do $obj instanceof AES or whatever to get the cipher but you can't do that to get the mode
+     *
+     * @return string
+     */
+    public function getMode()
+    {
+        return array_flip(self::MODE_MAP)[$this->mode];
+    }
+
+    /**
+     * Is the continuous buffer enabled?
+     *
+     * @return boolean
+     */
+    public function continuousBufferEnabled()
+    {
+        return $this->continuousBuffer;
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/Traits/Fingerprint.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/Traits/Fingerprint.php
new file mode 100644
index 0000000..9ca8926
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/Traits/Fingerprint.php
@@ -0,0 +1,57 @@
+<?php
+
+/**
+ * Fingerprint Trait for Public Keys
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\Common\Traits;
+
+use phpseclib3\Crypt\Hash;
+
+/**
+ * Fingerprint Trait for Private Keys
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+trait Fingerprint
+{
+    /**
+     * Returns the public key's fingerprint
+     *
+     * The public key's fingerprint is returned, which is equivalent to running `ssh-keygen -lf rsa.pub`. If there is
+     * no public key currently loaded, false is returned.
+     * Example output (md5): "c1:b1:30:29:d7:b8:de:6c:97:77:10:d7:46:41:63:87" (as specified by RFC 4716)
+     *
+     * @param string $algorithm The hashing algorithm to be used. Valid options are 'md5' and 'sha256'. False is returned
+     * for invalid values.
+     * @return mixed
+     */
+    public function getFingerprint($algorithm = 'md5')
+    {
+        $type = self::validatePlugin('Keys', 'OpenSSH', 'savePublicKey');
+        if ($type === false) {
+            return false;
+        }
+        $key = $this->toString('OpenSSH', ['binary' => true]);
+        if ($key === false) {
+            return false;
+        }
+        switch ($algorithm) {
+            case 'sha256':
+                $hash = new Hash('sha256');
+                $base = base64_encode($hash->hash($key));
+                return substr($base, 0, strlen($base) - 1);
+            case 'md5':
+                return substr(chunk_split(md5($key), 2, ':'), 0, -1);
+            default:
+                return false;
+        }
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/Traits/PasswordProtected.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/Traits/PasswordProtected.php
new file mode 100644
index 0000000..0ac274e
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/Traits/PasswordProtected.php
@@ -0,0 +1,46 @@
+<?php
+
+/**
+ * Password Protected Trait for Private Keys
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\Common\Traits;
+
+/**
+ * Password Protected Trait for Private Keys
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+trait PasswordProtected
+{
+    /**
+     * Password
+     *
+     * @var string|bool
+     */
+    private $password = false;
+
+    /**
+     * Sets the password
+     *
+     * Private keys can be encrypted with a password.  To unset the password, pass in the empty string or false.
+     * Or rather, pass in $password such that empty($password) && !is_string($password) is true.
+     *
+     * @see self::createKey()
+     * @see self::load()
+     * @param string|bool $password
+     */
+    public function withPassword($password = false)
+    {
+        $new = clone $this;
+        $new->password = $password;
+        return $new;
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/DES.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/DES.php
new file mode 100644
index 0000000..3b03830
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/DES.php
@@ -0,0 +1,1392 @@
+<?php
+
+/**
+ * Pure-PHP implementation of DES.
+ *
+ * Uses mcrypt, if available, and an internal implementation, otherwise.
+ *
+ * PHP version 5
+ *
+ * Useful resources are as follows:
+ *
+ *  - {@link http://en.wikipedia.org/wiki/DES_supplementary_material Wikipedia: DES supplementary material}
+ *  - {@link http://www.itl.nist.gov/fipspubs/fip46-2.htm FIPS 46-2 - (DES), Data Encryption Standard}
+ *  - {@link http://www.cs.eku.edu/faculty/styer/460/Encrypt/JS-DES.html JavaScript DES Example}
+ *
+ * Here's a short example of how to use this library:
+ * <code>
+ * <?php
+ *    include 'vendor/autoload.php';
+ *
+ *    $des = new \phpseclib3\Crypt\DES('ctr');
+ *
+ *    $des->setKey('abcdefgh');
+ *
+ *    $size = 10 * 1024;
+ *    $plaintext = '';
+ *    for ($i = 0; $i < $size; $i++) {
+ *        $plaintext.= 'a';
+ *    }
+ *
+ *    echo $des->decrypt($des->encrypt($plaintext));
+ * ?>
+ * </code>
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2007 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt;
+
+use phpseclib3\Crypt\Common\BlockCipher;
+use phpseclib3\Exception\BadModeException;
+
+/**
+ * Pure-PHP implementation of DES.
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+class DES extends BlockCipher
+{
+    /**
+     * Contains $keys[self::ENCRYPT]
+     *
+     * @see \phpseclib3\Crypt\DES::setupKey()
+     * @see \phpseclib3\Crypt\DES::processBlock()
+     */
+    const ENCRYPT = 0;
+    /**
+     * Contains $keys[self::DECRYPT]
+     *
+     * @see \phpseclib3\Crypt\DES::setupKey()
+     * @see \phpseclib3\Crypt\DES::processBlock()
+     */
+    const DECRYPT = 1;
+
+    /**
+     * Block Length of the cipher
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::block_size
+     * @var int
+     */
+    protected $block_size = 8;
+
+    /**
+     * Key Length (in bytes)
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::setKeyLength()
+     * @var int
+     */
+    protected $key_length = 8;
+
+    /**
+     * The mcrypt specific name of the cipher
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::cipher_name_mcrypt
+     * @var string
+     */
+    protected $cipher_name_mcrypt = 'des';
+
+    /**
+     * The OpenSSL names of the cipher / modes
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::openssl_mode_names
+     * @var array
+     */
+    protected $openssl_mode_names = [
+        self::MODE_ECB => 'des-ecb',
+        self::MODE_CBC => 'des-cbc',
+        self::MODE_CFB => 'des-cfb',
+        self::MODE_OFB => 'des-ofb'
+        // self::MODE_CTR is undefined for DES
+    ];
+
+    /**
+     * Optimizing value while CFB-encrypting
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::cfb_init_len
+     * @var int
+     */
+    protected $cfb_init_len = 500;
+
+    /**
+     * Switch for DES/3DES encryption
+     *
+     * Used only if $engine == self::ENGINE_INTERNAL
+     *
+     * @see self::setupKey()
+     * @see self::processBlock()
+     * @var int
+     */
+    protected $des_rounds = 1;
+
+    /**
+     * max possible size of $key
+     *
+     * @see self::setKey()
+     * @var string
+     */
+    protected $key_length_max = 8;
+
+    /**
+     * The Key Schedule
+     *
+     * @see self::setupKey()
+     * @var array
+     */
+    private $keys;
+
+    /**
+     * Key Cache "key"
+     *
+     * @see self::setupKey()
+     * @var array
+     */
+    private $kl;
+
+    /**
+     * Shuffle table.
+     *
+     * For each byte value index, the entry holds an 8-byte string
+     * with each byte containing all bits in the same state as the
+     * corresponding bit in the index value.
+     *
+     * @see self::processBlock()
+     * @see self::setupKey()
+     * @var array
+     */
+    protected static $shuffle = [
+        "\x00\x00\x00\x00\x00\x00\x00\x00", "\x00\x00\x00\x00\x00\x00\x00\xFF",
+        "\x00\x00\x00\x00\x00\x00\xFF\x00", "\x00\x00\x00\x00\x00\x00\xFF\xFF",
+        "\x00\x00\x00\x00\x00\xFF\x00\x00", "\x00\x00\x00\x00\x00\xFF\x00\xFF",
+        "\x00\x00\x00\x00\x00\xFF\xFF\x00", "\x00\x00\x00\x00\x00\xFF\xFF\xFF",
+        "\x00\x00\x00\x00\xFF\x00\x00\x00", "\x00\x00\x00\x00\xFF\x00\x00\xFF",
+        "\x00\x00\x00\x00\xFF\x00\xFF\x00", "\x00\x00\x00\x00\xFF\x00\xFF\xFF",
+        "\x00\x00\x00\x00\xFF\xFF\x00\x00", "\x00\x00\x00\x00\xFF\xFF\x00\xFF",
+        "\x00\x00\x00\x00\xFF\xFF\xFF\x00", "\x00\x00\x00\x00\xFF\xFF\xFF\xFF",
+        "\x00\x00\x00\xFF\x00\x00\x00\x00", "\x00\x00\x00\xFF\x00\x00\x00\xFF",
+        "\x00\x00\x00\xFF\x00\x00\xFF\x00", "\x00\x00\x00\xFF\x00\x00\xFF\xFF",
+        "\x00\x00\x00\xFF\x00\xFF\x00\x00", "\x00\x00\x00\xFF\x00\xFF\x00\xFF",
+        "\x00\x00\x00\xFF\x00\xFF\xFF\x00", "\x00\x00\x00\xFF\x00\xFF\xFF\xFF",
+        "\x00\x00\x00\xFF\xFF\x00\x00\x00", "\x00\x00\x00\xFF\xFF\x00\x00\xFF",
+        "\x00\x00\x00\xFF\xFF\x00\xFF\x00", "\x00\x00\x00\xFF\xFF\x00\xFF\xFF",
+        "\x00\x00\x00\xFF\xFF\xFF\x00\x00", "\x00\x00\x00\xFF\xFF\xFF\x00\xFF",
+        "\x00\x00\x00\xFF\xFF\xFF\xFF\x00", "\x00\x00\x00\xFF\xFF\xFF\xFF\xFF",
+        "\x00\x00\xFF\x00\x00\x00\x00\x00", "\x00\x00\xFF\x00\x00\x00\x00\xFF",
+        "\x00\x00\xFF\x00\x00\x00\xFF\x00", "\x00\x00\xFF\x00\x00\x00\xFF\xFF",
+        "\x00\x00\xFF\x00\x00\xFF\x00\x00", "\x00\x00\xFF\x00\x00\xFF\x00\xFF",
+        "\x00\x00\xFF\x00\x00\xFF\xFF\x00", "\x00\x00\xFF\x00\x00\xFF\xFF\xFF",
+        "\x00\x00\xFF\x00\xFF\x00\x00\x00", "\x00\x00\xFF\x00\xFF\x00\x00\xFF",
+        "\x00\x00\xFF\x00\xFF\x00\xFF\x00", "\x00\x00\xFF\x00\xFF\x00\xFF\xFF",
+        "\x00\x00\xFF\x00\xFF\xFF\x00\x00", "\x00\x00\xFF\x00\xFF\xFF\x00\xFF",
+        "\x00\x00\xFF\x00\xFF\xFF\xFF\x00", "\x00\x00\xFF\x00\xFF\xFF\xFF\xFF",
+        "\x00\x00\xFF\xFF\x00\x00\x00\x00", "\x00\x00\xFF\xFF\x00\x00\x00\xFF",
+        "\x00\x00\xFF\xFF\x00\x00\xFF\x00", "\x00\x00\xFF\xFF\x00\x00\xFF\xFF",
+        "\x00\x00\xFF\xFF\x00\xFF\x00\x00", "\x00\x00\xFF\xFF\x00\xFF\x00\xFF",
+        "\x00\x00\xFF\xFF\x00\xFF\xFF\x00", "\x00\x00\xFF\xFF\x00\xFF\xFF\xFF",
+        "\x00\x00\xFF\xFF\xFF\x00\x00\x00", "\x00\x00\xFF\xFF\xFF\x00\x00\xFF",
+        "\x00\x00\xFF\xFF\xFF\x00\xFF\x00", "\x00\x00\xFF\xFF\xFF\x00\xFF\xFF",
+        "\x00\x00\xFF\xFF\xFF\xFF\x00\x00", "\x00\x00\xFF\xFF\xFF\xFF\x00\xFF",
+        "\x00\x00\xFF\xFF\xFF\xFF\xFF\x00", "\x00\x00\xFF\xFF\xFF\xFF\xFF\xFF",
+        "\x00\xFF\x00\x00\x00\x00\x00\x00", "\x00\xFF\x00\x00\x00\x00\x00\xFF",
+        "\x00\xFF\x00\x00\x00\x00\xFF\x00", "\x00\xFF\x00\x00\x00\x00\xFF\xFF",
+        "\x00\xFF\x00\x00\x00\xFF\x00\x00", "\x00\xFF\x00\x00\x00\xFF\x00\xFF",
+        "\x00\xFF\x00\x00\x00\xFF\xFF\x00", "\x00\xFF\x00\x00\x00\xFF\xFF\xFF",
+        "\x00\xFF\x00\x00\xFF\x00\x00\x00", "\x00\xFF\x00\x00\xFF\x00\x00\xFF",
+        "\x00\xFF\x00\x00\xFF\x00\xFF\x00", "\x00\xFF\x00\x00\xFF\x00\xFF\xFF",
+        "\x00\xFF\x00\x00\xFF\xFF\x00\x00", "\x00\xFF\x00\x00\xFF\xFF\x00\xFF",
+        "\x00\xFF\x00\x00\xFF\xFF\xFF\x00", "\x00\xFF\x00\x00\xFF\xFF\xFF\xFF",
+        "\x00\xFF\x00\xFF\x00\x00\x00\x00", "\x00\xFF\x00\xFF\x00\x00\x00\xFF",
+        "\x00\xFF\x00\xFF\x00\x00\xFF\x00", "\x00\xFF\x00\xFF\x00\x00\xFF\xFF",
+        "\x00\xFF\x00\xFF\x00\xFF\x00\x00", "\x00\xFF\x00\xFF\x00\xFF\x00\xFF",
+        "\x00\xFF\x00\xFF\x00\xFF\xFF\x00", "\x00\xFF\x00\xFF\x00\xFF\xFF\xFF",
+        "\x00\xFF\x00\xFF\xFF\x00\x00\x00", "\x00\xFF\x00\xFF\xFF\x00\x00\xFF",
+        "\x00\xFF\x00\xFF\xFF\x00\xFF\x00", "\x00\xFF\x00\xFF\xFF\x00\xFF\xFF",
+        "\x00\xFF\x00\xFF\xFF\xFF\x00\x00", "\x00\xFF\x00\xFF\xFF\xFF\x00\xFF",
+        "\x00\xFF\x00\xFF\xFF\xFF\xFF\x00", "\x00\xFF\x00\xFF\xFF\xFF\xFF\xFF",
+        "\x00\xFF\xFF\x00\x00\x00\x00\x00", "\x00\xFF\xFF\x00\x00\x00\x00\xFF",
+        "\x00\xFF\xFF\x00\x00\x00\xFF\x00", "\x00\xFF\xFF\x00\x00\x00\xFF\xFF",
+        "\x00\xFF\xFF\x00\x00\xFF\x00\x00", "\x00\xFF\xFF\x00\x00\xFF\x00\xFF",
+        "\x00\xFF\xFF\x00\x00\xFF\xFF\x00", "\x00\xFF\xFF\x00\x00\xFF\xFF\xFF",
+        "\x00\xFF\xFF\x00\xFF\x00\x00\x00", "\x00\xFF\xFF\x00\xFF\x00\x00\xFF",
+        "\x00\xFF\xFF\x00\xFF\x00\xFF\x00", "\x00\xFF\xFF\x00\xFF\x00\xFF\xFF",
+        "\x00\xFF\xFF\x00\xFF\xFF\x00\x00", "\x00\xFF\xFF\x00\xFF\xFF\x00\xFF",
+        "\x00\xFF\xFF\x00\xFF\xFF\xFF\x00", "\x00\xFF\xFF\x00\xFF\xFF\xFF\xFF",
+        "\x00\xFF\xFF\xFF\x00\x00\x00\x00", "\x00\xFF\xFF\xFF\x00\x00\x00\xFF",
+        "\x00\xFF\xFF\xFF\x00\x00\xFF\x00", "\x00\xFF\xFF\xFF\x00\x00\xFF\xFF",
+        "\x00\xFF\xFF\xFF\x00\xFF\x00\x00", "\x00\xFF\xFF\xFF\x00\xFF\x00\xFF",
+        "\x00\xFF\xFF\xFF\x00\xFF\xFF\x00", "\x00\xFF\xFF\xFF\x00\xFF\xFF\xFF",
+        "\x00\xFF\xFF\xFF\xFF\x00\x00\x00", "\x00\xFF\xFF\xFF\xFF\x00\x00\xFF",
+        "\x00\xFF\xFF\xFF\xFF\x00\xFF\x00", "\x00\xFF\xFF\xFF\xFF\x00\xFF\xFF",
+        "\x00\xFF\xFF\xFF\xFF\xFF\x00\x00", "\x00\xFF\xFF\xFF\xFF\xFF\x00\xFF",
+        "\x00\xFF\xFF\xFF\xFF\xFF\xFF\x00", "\x00\xFF\xFF\xFF\xFF\xFF\xFF\xFF",
+        "\xFF\x00\x00\x00\x00\x00\x00\x00", "\xFF\x00\x00\x00\x00\x00\x00\xFF",
+        "\xFF\x00\x00\x00\x00\x00\xFF\x00", "\xFF\x00\x00\x00\x00\x00\xFF\xFF",
+        "\xFF\x00\x00\x00\x00\xFF\x00\x00", "\xFF\x00\x00\x00\x00\xFF\x00\xFF",
+        "\xFF\x00\x00\x00\x00\xFF\xFF\x00", "\xFF\x00\x00\x00\x00\xFF\xFF\xFF",
+        "\xFF\x00\x00\x00\xFF\x00\x00\x00", "\xFF\x00\x00\x00\xFF\x00\x00\xFF",
+        "\xFF\x00\x00\x00\xFF\x00\xFF\x00", "\xFF\x00\x00\x00\xFF\x00\xFF\xFF",
+        "\xFF\x00\x00\x00\xFF\xFF\x00\x00", "\xFF\x00\x00\x00\xFF\xFF\x00\xFF",
+        "\xFF\x00\x00\x00\xFF\xFF\xFF\x00", "\xFF\x00\x00\x00\xFF\xFF\xFF\xFF",
+        "\xFF\x00\x00\xFF\x00\x00\x00\x00", "\xFF\x00\x00\xFF\x00\x00\x00\xFF",
+        "\xFF\x00\x00\xFF\x00\x00\xFF\x00", "\xFF\x00\x00\xFF\x00\x00\xFF\xFF",
+        "\xFF\x00\x00\xFF\x00\xFF\x00\x00", "\xFF\x00\x00\xFF\x00\xFF\x00\xFF",
+        "\xFF\x00\x00\xFF\x00\xFF\xFF\x00", "\xFF\x00\x00\xFF\x00\xFF\xFF\xFF",
+        "\xFF\x00\x00\xFF\xFF\x00\x00\x00", "\xFF\x00\x00\xFF\xFF\x00\x00\xFF",
+        "\xFF\x00\x00\xFF\xFF\x00\xFF\x00", "\xFF\x00\x00\xFF\xFF\x00\xFF\xFF",
+        "\xFF\x00\x00\xFF\xFF\xFF\x00\x00", "\xFF\x00\x00\xFF\xFF\xFF\x00\xFF",
+        "\xFF\x00\x00\xFF\xFF\xFF\xFF\x00", "\xFF\x00\x00\xFF\xFF\xFF\xFF\xFF",
+        "\xFF\x00\xFF\x00\x00\x00\x00\x00", "\xFF\x00\xFF\x00\x00\x00\x00\xFF",
+        "\xFF\x00\xFF\x00\x00\x00\xFF\x00", "\xFF\x00\xFF\x00\x00\x00\xFF\xFF",
+        "\xFF\x00\xFF\x00\x00\xFF\x00\x00", "\xFF\x00\xFF\x00\x00\xFF\x00\xFF",
+        "\xFF\x00\xFF\x00\x00\xFF\xFF\x00", "\xFF\x00\xFF\x00\x00\xFF\xFF\xFF",
+        "\xFF\x00\xFF\x00\xFF\x00\x00\x00", "\xFF\x00\xFF\x00\xFF\x00\x00\xFF",
+        "\xFF\x00\xFF\x00\xFF\x00\xFF\x00", "\xFF\x00\xFF\x00\xFF\x00\xFF\xFF",
+        "\xFF\x00\xFF\x00\xFF\xFF\x00\x00", "\xFF\x00\xFF\x00\xFF\xFF\x00\xFF",
+        "\xFF\x00\xFF\x00\xFF\xFF\xFF\x00", "\xFF\x00\xFF\x00\xFF\xFF\xFF\xFF",
+        "\xFF\x00\xFF\xFF\x00\x00\x00\x00", "\xFF\x00\xFF\xFF\x00\x00\x00\xFF",
+        "\xFF\x00\xFF\xFF\x00\x00\xFF\x00", "\xFF\x00\xFF\xFF\x00\x00\xFF\xFF",
+        "\xFF\x00\xFF\xFF\x00\xFF\x00\x00", "\xFF\x00\xFF\xFF\x00\xFF\x00\xFF",
+        "\xFF\x00\xFF\xFF\x00\xFF\xFF\x00", "\xFF\x00\xFF\xFF\x00\xFF\xFF\xFF",
+        "\xFF\x00\xFF\xFF\xFF\x00\x00\x00", "\xFF\x00\xFF\xFF\xFF\x00\x00\xFF",
+        "\xFF\x00\xFF\xFF\xFF\x00\xFF\x00", "\xFF\x00\xFF\xFF\xFF\x00\xFF\xFF",
+        "\xFF\x00\xFF\xFF\xFF\xFF\x00\x00", "\xFF\x00\xFF\xFF\xFF\xFF\x00\xFF",
+        "\xFF\x00\xFF\xFF\xFF\xFF\xFF\x00", "\xFF\x00\xFF\xFF\xFF\xFF\xFF\xFF",
+        "\xFF\xFF\x00\x00\x00\x00\x00\x00", "\xFF\xFF\x00\x00\x00\x00\x00\xFF",
+        "\xFF\xFF\x00\x00\x00\x00\xFF\x00", "\xFF\xFF\x00\x00\x00\x00\xFF\xFF",
+        "\xFF\xFF\x00\x00\x00\xFF\x00\x00", "\xFF\xFF\x00\x00\x00\xFF\x00\xFF",
+        "\xFF\xFF\x00\x00\x00\xFF\xFF\x00", "\xFF\xFF\x00\x00\x00\xFF\xFF\xFF",
+        "\xFF\xFF\x00\x00\xFF\x00\x00\x00", "\xFF\xFF\x00\x00\xFF\x00\x00\xFF",
+        "\xFF\xFF\x00\x00\xFF\x00\xFF\x00", "\xFF\xFF\x00\x00\xFF\x00\xFF\xFF",
+        "\xFF\xFF\x00\x00\xFF\xFF\x00\x00", "\xFF\xFF\x00\x00\xFF\xFF\x00\xFF",
+        "\xFF\xFF\x00\x00\xFF\xFF\xFF\x00", "\xFF\xFF\x00\x00\xFF\xFF\xFF\xFF",
+        "\xFF\xFF\x00\xFF\x00\x00\x00\x00", "\xFF\xFF\x00\xFF\x00\x00\x00\xFF",
+        "\xFF\xFF\x00\xFF\x00\x00\xFF\x00", "\xFF\xFF\x00\xFF\x00\x00\xFF\xFF",
+        "\xFF\xFF\x00\xFF\x00\xFF\x00\x00", "\xFF\xFF\x00\xFF\x00\xFF\x00\xFF",
+        "\xFF\xFF\x00\xFF\x00\xFF\xFF\x00", "\xFF\xFF\x00\xFF\x00\xFF\xFF\xFF",
+        "\xFF\xFF\x00\xFF\xFF\x00\x00\x00", "\xFF\xFF\x00\xFF\xFF\x00\x00\xFF",
+        "\xFF\xFF\x00\xFF\xFF\x00\xFF\x00", "\xFF\xFF\x00\xFF\xFF\x00\xFF\xFF",
+        "\xFF\xFF\x00\xFF\xFF\xFF\x00\x00", "\xFF\xFF\x00\xFF\xFF\xFF\x00\xFF",
+        "\xFF\xFF\x00\xFF\xFF\xFF\xFF\x00", "\xFF\xFF\x00\xFF\xFF\xFF\xFF\xFF",
+        "\xFF\xFF\xFF\x00\x00\x00\x00\x00", "\xFF\xFF\xFF\x00\x00\x00\x00\xFF",
+        "\xFF\xFF\xFF\x00\x00\x00\xFF\x00", "\xFF\xFF\xFF\x00\x00\x00\xFF\xFF",
+        "\xFF\xFF\xFF\x00\x00\xFF\x00\x00", "\xFF\xFF\xFF\x00\x00\xFF\x00\xFF",
+        "\xFF\xFF\xFF\x00\x00\xFF\xFF\x00", "\xFF\xFF\xFF\x00\x00\xFF\xFF\xFF",
+        "\xFF\xFF\xFF\x00\xFF\x00\x00\x00", "\xFF\xFF\xFF\x00\xFF\x00\x00\xFF",
+        "\xFF\xFF\xFF\x00\xFF\x00\xFF\x00", "\xFF\xFF\xFF\x00\xFF\x00\xFF\xFF",
+        "\xFF\xFF\xFF\x00\xFF\xFF\x00\x00", "\xFF\xFF\xFF\x00\xFF\xFF\x00\xFF",
+        "\xFF\xFF\xFF\x00\xFF\xFF\xFF\x00", "\xFF\xFF\xFF\x00\xFF\xFF\xFF\xFF",
+        "\xFF\xFF\xFF\xFF\x00\x00\x00\x00", "\xFF\xFF\xFF\xFF\x00\x00\x00\xFF",
+        "\xFF\xFF\xFF\xFF\x00\x00\xFF\x00", "\xFF\xFF\xFF\xFF\x00\x00\xFF\xFF",
+        "\xFF\xFF\xFF\xFF\x00\xFF\x00\x00", "\xFF\xFF\xFF\xFF\x00\xFF\x00\xFF",
+        "\xFF\xFF\xFF\xFF\x00\xFF\xFF\x00", "\xFF\xFF\xFF\xFF\x00\xFF\xFF\xFF",
+        "\xFF\xFF\xFF\xFF\xFF\x00\x00\x00", "\xFF\xFF\xFF\xFF\xFF\x00\x00\xFF",
+        "\xFF\xFF\xFF\xFF\xFF\x00\xFF\x00", "\xFF\xFF\xFF\xFF\xFF\x00\xFF\xFF",
+        "\xFF\xFF\xFF\xFF\xFF\xFF\x00\x00", "\xFF\xFF\xFF\xFF\xFF\xFF\x00\xFF",
+        "\xFF\xFF\xFF\xFF\xFF\xFF\xFF\x00", "\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF"
+    ];
+
+    /**
+     * IP mapping helper table.
+     *
+     * Indexing this table with each source byte performs the initial bit permutation.
+     *
+     * @var array
+     */
+    protected static $ipmap = [
+        0x00, 0x10, 0x01, 0x11, 0x20, 0x30, 0x21, 0x31,
+        0x02, 0x12, 0x03, 0x13, 0x22, 0x32, 0x23, 0x33,
+        0x40, 0x50, 0x41, 0x51, 0x60, 0x70, 0x61, 0x71,
+        0x42, 0x52, 0x43, 0x53, 0x62, 0x72, 0x63, 0x73,
+        0x04, 0x14, 0x05, 0x15, 0x24, 0x34, 0x25, 0x35,
+        0x06, 0x16, 0x07, 0x17, 0x26, 0x36, 0x27, 0x37,
+        0x44, 0x54, 0x45, 0x55, 0x64, 0x74, 0x65, 0x75,
+        0x46, 0x56, 0x47, 0x57, 0x66, 0x76, 0x67, 0x77,
+        0x80, 0x90, 0x81, 0x91, 0xA0, 0xB0, 0xA1, 0xB1,
+        0x82, 0x92, 0x83, 0x93, 0xA2, 0xB2, 0xA3, 0xB3,
+        0xC0, 0xD0, 0xC1, 0xD1, 0xE0, 0xF0, 0xE1, 0xF1,
+        0xC2, 0xD2, 0xC3, 0xD3, 0xE2, 0xF2, 0xE3, 0xF3,
+        0x84, 0x94, 0x85, 0x95, 0xA4, 0xB4, 0xA5, 0xB5,
+        0x86, 0x96, 0x87, 0x97, 0xA6, 0xB6, 0xA7, 0xB7,
+        0xC4, 0xD4, 0xC5, 0xD5, 0xE4, 0xF4, 0xE5, 0xF5,
+        0xC6, 0xD6, 0xC7, 0xD7, 0xE6, 0xF6, 0xE7, 0xF7,
+        0x08, 0x18, 0x09, 0x19, 0x28, 0x38, 0x29, 0x39,
+        0x0A, 0x1A, 0x0B, 0x1B, 0x2A, 0x3A, 0x2B, 0x3B,
+        0x48, 0x58, 0x49, 0x59, 0x68, 0x78, 0x69, 0x79,
+        0x4A, 0x5A, 0x4B, 0x5B, 0x6A, 0x7A, 0x6B, 0x7B,
+        0x0C, 0x1C, 0x0D, 0x1D, 0x2C, 0x3C, 0x2D, 0x3D,
+        0x0E, 0x1E, 0x0F, 0x1F, 0x2E, 0x3E, 0x2F, 0x3F,
+        0x4C, 0x5C, 0x4D, 0x5D, 0x6C, 0x7C, 0x6D, 0x7D,
+        0x4E, 0x5E, 0x4F, 0x5F, 0x6E, 0x7E, 0x6F, 0x7F,
+        0x88, 0x98, 0x89, 0x99, 0xA8, 0xB8, 0xA9, 0xB9,
+        0x8A, 0x9A, 0x8B, 0x9B, 0xAA, 0xBA, 0xAB, 0xBB,
+        0xC8, 0xD8, 0xC9, 0xD9, 0xE8, 0xF8, 0xE9, 0xF9,
+        0xCA, 0xDA, 0xCB, 0xDB, 0xEA, 0xFA, 0xEB, 0xFB,
+        0x8C, 0x9C, 0x8D, 0x9D, 0xAC, 0xBC, 0xAD, 0xBD,
+        0x8E, 0x9E, 0x8F, 0x9F, 0xAE, 0xBE, 0xAF, 0xBF,
+        0xCC, 0xDC, 0xCD, 0xDD, 0xEC, 0xFC, 0xED, 0xFD,
+        0xCE, 0xDE, 0xCF, 0xDF, 0xEE, 0xFE, 0xEF, 0xFF
+    ];
+
+    /**
+     * Inverse IP mapping helper table.
+     * Indexing this table with a byte value reverses the bit order.
+     *
+     * @var array
+     */
+    protected static $invipmap = [
+        0x00, 0x80, 0x40, 0xC0, 0x20, 0xA0, 0x60, 0xE0,
+        0x10, 0x90, 0x50, 0xD0, 0x30, 0xB0, 0x70, 0xF0,
+        0x08, 0x88, 0x48, 0xC8, 0x28, 0xA8, 0x68, 0xE8,
+        0x18, 0x98, 0x58, 0xD8, 0x38, 0xB8, 0x78, 0xF8,
+        0x04, 0x84, 0x44, 0xC4, 0x24, 0xA4, 0x64, 0xE4,
+        0x14, 0x94, 0x54, 0xD4, 0x34, 0xB4, 0x74, 0xF4,
+        0x0C, 0x8C, 0x4C, 0xCC, 0x2C, 0xAC, 0x6C, 0xEC,
+        0x1C, 0x9C, 0x5C, 0xDC, 0x3C, 0xBC, 0x7C, 0xFC,
+        0x02, 0x82, 0x42, 0xC2, 0x22, 0xA2, 0x62, 0xE2,
+        0x12, 0x92, 0x52, 0xD2, 0x32, 0xB2, 0x72, 0xF2,
+        0x0A, 0x8A, 0x4A, 0xCA, 0x2A, 0xAA, 0x6A, 0xEA,
+        0x1A, 0x9A, 0x5A, 0xDA, 0x3A, 0xBA, 0x7A, 0xFA,
+        0x06, 0x86, 0x46, 0xC6, 0x26, 0xA6, 0x66, 0xE6,
+        0x16, 0x96, 0x56, 0xD6, 0x36, 0xB6, 0x76, 0xF6,
+        0x0E, 0x8E, 0x4E, 0xCE, 0x2E, 0xAE, 0x6E, 0xEE,
+        0x1E, 0x9E, 0x5E, 0xDE, 0x3E, 0xBE, 0x7E, 0xFE,
+        0x01, 0x81, 0x41, 0xC1, 0x21, 0xA1, 0x61, 0xE1,
+        0x11, 0x91, 0x51, 0xD1, 0x31, 0xB1, 0x71, 0xF1,
+        0x09, 0x89, 0x49, 0xC9, 0x29, 0xA9, 0x69, 0xE9,
+        0x19, 0x99, 0x59, 0xD9, 0x39, 0xB9, 0x79, 0xF9,
+        0x05, 0x85, 0x45, 0xC5, 0x25, 0xA5, 0x65, 0xE5,
+        0x15, 0x95, 0x55, 0xD5, 0x35, 0xB5, 0x75, 0xF5,
+        0x0D, 0x8D, 0x4D, 0xCD, 0x2D, 0xAD, 0x6D, 0xED,
+        0x1D, 0x9D, 0x5D, 0xDD, 0x3D, 0xBD, 0x7D, 0xFD,
+        0x03, 0x83, 0x43, 0xC3, 0x23, 0xA3, 0x63, 0xE3,
+        0x13, 0x93, 0x53, 0xD3, 0x33, 0xB3, 0x73, 0xF3,
+        0x0B, 0x8B, 0x4B, 0xCB, 0x2B, 0xAB, 0x6B, 0xEB,
+        0x1B, 0x9B, 0x5B, 0xDB, 0x3B, 0xBB, 0x7B, 0xFB,
+        0x07, 0x87, 0x47, 0xC7, 0x27, 0xA7, 0x67, 0xE7,
+        0x17, 0x97, 0x57, 0xD7, 0x37, 0xB7, 0x77, 0xF7,
+        0x0F, 0x8F, 0x4F, 0xCF, 0x2F, 0xAF, 0x6F, 0xEF,
+        0x1F, 0x9F, 0x5F, 0xDF, 0x3F, 0xBF, 0x7F, 0xFF
+    ];
+
+    /**
+     * Pre-permuted S-box1
+     *
+     * Each box ($sbox1-$sbox8) has been vectorized, then each value pre-permuted using the
+     * P table: concatenation can then be replaced by exclusive ORs.
+     *
+     * @var array
+     */
+    protected static $sbox1 = [
+        0x00808200, 0x00000000, 0x00008000, 0x00808202,
+        0x00808002, 0x00008202, 0x00000002, 0x00008000,
+        0x00000200, 0x00808200, 0x00808202, 0x00000200,
+        0x00800202, 0x00808002, 0x00800000, 0x00000002,
+        0x00000202, 0x00800200, 0x00800200, 0x00008200,
+        0x00008200, 0x00808000, 0x00808000, 0x00800202,
+        0x00008002, 0x00800002, 0x00800002, 0x00008002,
+        0x00000000, 0x00000202, 0x00008202, 0x00800000,
+        0x00008000, 0x00808202, 0x00000002, 0x00808000,
+        0x00808200, 0x00800000, 0x00800000, 0x00000200,
+        0x00808002, 0x00008000, 0x00008200, 0x00800002,
+        0x00000200, 0x00000002, 0x00800202, 0x00008202,
+        0x00808202, 0x00008002, 0x00808000, 0x00800202,
+        0x00800002, 0x00000202, 0x00008202, 0x00808200,
+        0x00000202, 0x00800200, 0x00800200, 0x00000000,
+        0x00008002, 0x00008200, 0x00000000, 0x00808002
+    ];
+
+    /**
+     * Pre-permuted S-box2
+     *
+     * @var array
+     */
+    protected static $sbox2 = [
+        0x40084010, 0x40004000, 0x00004000, 0x00084010,
+        0x00080000, 0x00000010, 0x40080010, 0x40004010,
+        0x40000010, 0x40084010, 0x40084000, 0x40000000,
+        0x40004000, 0x00080000, 0x00000010, 0x40080010,
+        0x00084000, 0x00080010, 0x40004010, 0x00000000,
+        0x40000000, 0x00004000, 0x00084010, 0x40080000,
+        0x00080010, 0x40000010, 0x00000000, 0x00084000,
+        0x00004010, 0x40084000, 0x40080000, 0x00004010,
+        0x00000000, 0x00084010, 0x40080010, 0x00080000,
+        0x40004010, 0x40080000, 0x40084000, 0x00004000,
+        0x40080000, 0x40004000, 0x00000010, 0x40084010,
+        0x00084010, 0x00000010, 0x00004000, 0x40000000,
+        0x00004010, 0x40084000, 0x00080000, 0x40000010,
+        0x00080010, 0x40004010, 0x40000010, 0x00080010,
+        0x00084000, 0x00000000, 0x40004000, 0x00004010,
+        0x40000000, 0x40080010, 0x40084010, 0x00084000
+    ];
+
+    /**
+     * Pre-permuted S-box3
+     *
+     * @var array
+     */
+    protected static $sbox3 = [
+        0x00000104, 0x04010100, 0x00000000, 0x04010004,
+        0x04000100, 0x00000000, 0x00010104, 0x04000100,
+        0x00010004, 0x04000004, 0x04000004, 0x00010000,
+        0x04010104, 0x00010004, 0x04010000, 0x00000104,
+        0x04000000, 0x00000004, 0x04010100, 0x00000100,
+        0x00010100, 0x04010000, 0x04010004, 0x00010104,
+        0x04000104, 0x00010100, 0x00010000, 0x04000104,
+        0x00000004, 0x04010104, 0x00000100, 0x04000000,
+        0x04010100, 0x04000000, 0x00010004, 0x00000104,
+        0x00010000, 0x04010100, 0x04000100, 0x00000000,
+        0x00000100, 0x00010004, 0x04010104, 0x04000100,
+        0x04000004, 0x00000100, 0x00000000, 0x04010004,
+        0x04000104, 0x00010000, 0x04000000, 0x04010104,
+        0x00000004, 0x00010104, 0x00010100, 0x04000004,
+        0x04010000, 0x04000104, 0x00000104, 0x04010000,
+        0x00010104, 0x00000004, 0x04010004, 0x00010100
+    ];
+
+    /**
+     * Pre-permuted S-box4
+     *
+     * @var array
+     */
+    protected static $sbox4 = [
+        0x80401000, 0x80001040, 0x80001040, 0x00000040,
+        0x00401040, 0x80400040, 0x80400000, 0x80001000,
+        0x00000000, 0x00401000, 0x00401000, 0x80401040,
+        0x80000040, 0x00000000, 0x00400040, 0x80400000,
+        0x80000000, 0x00001000, 0x00400000, 0x80401000,
+        0x00000040, 0x00400000, 0x80001000, 0x00001040,
+        0x80400040, 0x80000000, 0x00001040, 0x00400040,
+        0x00001000, 0x00401040, 0x80401040, 0x80000040,
+        0x00400040, 0x80400000, 0x00401000, 0x80401040,
+        0x80000040, 0x00000000, 0x00000000, 0x00401000,
+        0x00001040, 0x00400040, 0x80400040, 0x80000000,
+        0x80401000, 0x80001040, 0x80001040, 0x00000040,
+        0x80401040, 0x80000040, 0x80000000, 0x00001000,
+        0x80400000, 0x80001000, 0x00401040, 0x80400040,
+        0x80001000, 0x00001040, 0x00400000, 0x80401000,
+        0x00000040, 0x00400000, 0x00001000, 0x00401040
+    ];
+
+    /**
+     * Pre-permuted S-box5
+     *
+     * @var array
+     */
+    protected static $sbox5 = [
+        0x00000080, 0x01040080, 0x01040000, 0x21000080,
+        0x00040000, 0x00000080, 0x20000000, 0x01040000,
+        0x20040080, 0x00040000, 0x01000080, 0x20040080,
+        0x21000080, 0x21040000, 0x00040080, 0x20000000,
+        0x01000000, 0x20040000, 0x20040000, 0x00000000,
+        0x20000080, 0x21040080, 0x21040080, 0x01000080,
+        0x21040000, 0x20000080, 0x00000000, 0x21000000,
+        0x01040080, 0x01000000, 0x21000000, 0x00040080,
+        0x00040000, 0x21000080, 0x00000080, 0x01000000,
+        0x20000000, 0x01040000, 0x21000080, 0x20040080,
+        0x01000080, 0x20000000, 0x21040000, 0x01040080,
+        0x20040080, 0x00000080, 0x01000000, 0x21040000,
+        0x21040080, 0x00040080, 0x21000000, 0x21040080,
+        0x01040000, 0x00000000, 0x20040000, 0x21000000,
+        0x00040080, 0x01000080, 0x20000080, 0x00040000,
+        0x00000000, 0x20040000, 0x01040080, 0x20000080
+    ];
+
+    /**
+     * Pre-permuted S-box6
+     *
+     * @var array
+     */
+    protected static $sbox6 = [
+        0x10000008, 0x10200000, 0x00002000, 0x10202008,
+        0x10200000, 0x00000008, 0x10202008, 0x00200000,
+        0x10002000, 0x00202008, 0x00200000, 0x10000008,
+        0x00200008, 0x10002000, 0x10000000, 0x00002008,
+        0x00000000, 0x00200008, 0x10002008, 0x00002000,
+        0x00202000, 0x10002008, 0x00000008, 0x10200008,
+        0x10200008, 0x00000000, 0x00202008, 0x10202000,
+        0x00002008, 0x00202000, 0x10202000, 0x10000000,
+        0x10002000, 0x00000008, 0x10200008, 0x00202000,
+        0x10202008, 0x00200000, 0x00002008, 0x10000008,
+        0x00200000, 0x10002000, 0x10000000, 0x00002008,
+        0x10000008, 0x10202008, 0x00202000, 0x10200000,
+        0x00202008, 0x10202000, 0x00000000, 0x10200008,
+        0x00000008, 0x00002000, 0x10200000, 0x00202008,
+        0x00002000, 0x00200008, 0x10002008, 0x00000000,
+        0x10202000, 0x10000000, 0x00200008, 0x10002008
+    ];
+
+    /**
+     * Pre-permuted S-box7
+     *
+     * @var array
+     */
+    protected static $sbox7 = [
+        0x00100000, 0x02100001, 0x02000401, 0x00000000,
+        0x00000400, 0x02000401, 0x00100401, 0x02100400,
+        0x02100401, 0x00100000, 0x00000000, 0x02000001,
+        0x00000001, 0x02000000, 0x02100001, 0x00000401,
+        0x02000400, 0x00100401, 0x00100001, 0x02000400,
+        0x02000001, 0x02100000, 0x02100400, 0x00100001,
+        0x02100000, 0x00000400, 0x00000401, 0x02100401,
+        0x00100400, 0x00000001, 0x02000000, 0x00100400,
+        0x02000000, 0x00100400, 0x00100000, 0x02000401,
+        0x02000401, 0x02100001, 0x02100001, 0x00000001,
+        0x00100001, 0x02000000, 0x02000400, 0x00100000,
+        0x02100400, 0x00000401, 0x00100401, 0x02100400,
+        0x00000401, 0x02000001, 0x02100401, 0x02100000,
+        0x00100400, 0x00000000, 0x00000001, 0x02100401,
+        0x00000000, 0x00100401, 0x02100000, 0x00000400,
+        0x02000001, 0x02000400, 0x00000400, 0x00100001
+    ];
+
+    /**
+     * Pre-permuted S-box8
+     *
+     * @var array
+     */
+    protected static $sbox8 = [
+        0x08000820, 0x00000800, 0x00020000, 0x08020820,
+        0x08000000, 0x08000820, 0x00000020, 0x08000000,
+        0x00020020, 0x08020000, 0x08020820, 0x00020800,
+        0x08020800, 0x00020820, 0x00000800, 0x00000020,
+        0x08020000, 0x08000020, 0x08000800, 0x00000820,
+        0x00020800, 0x00020020, 0x08020020, 0x08020800,
+        0x00000820, 0x00000000, 0x00000000, 0x08020020,
+        0x08000020, 0x08000800, 0x00020820, 0x00020000,
+        0x00020820, 0x00020000, 0x08020800, 0x00000800,
+        0x00000020, 0x08020020, 0x00000800, 0x00020820,
+        0x08000800, 0x00000020, 0x08000020, 0x08020000,
+        0x08020020, 0x08000000, 0x00020000, 0x08000820,
+        0x00000000, 0x08020820, 0x00020020, 0x08000020,
+        0x08020000, 0x08000800, 0x08000820, 0x00000000,
+        0x08020820, 0x00020800, 0x00020800, 0x00000820,
+        0x00000820, 0x00020020, 0x08000000, 0x08020800
+    ];
+
+    /**
+     * Default Constructor.
+     *
+     * @param string $mode
+     * @throws BadModeException if an invalid / unsupported mode is provided
+     */
+    public function __construct($mode)
+    {
+        parent::__construct($mode);
+
+        if ($this->mode == self::MODE_STREAM) {
+            throw new BadModeException('Block ciphers cannot be ran in stream mode');
+        }
+    }
+
+    /**
+     * Test for engine validity
+     *
+     * This is mainly just a wrapper to set things up for \phpseclib3\Crypt\Common\SymmetricKey::isValidEngine()
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::isValidEngine()
+     * @param int $engine
+     * @return bool
+     */
+    protected function isValidEngineHelper($engine)
+    {
+        if ($this->key_length_max == 8) {
+            if ($engine == self::ENGINE_OPENSSL) {
+                // quoting https://www.openssl.org/news/openssl-3.0-notes.html, OpenSSL 3.0.1
+                // "Moved all variations of the EVP ciphers CAST5, BF, IDEA, SEED, RC2, RC4, RC5, and DES to the legacy provider"
+                // in theory openssl_get_cipher_methods() should catch this but, on GitHub Actions, at least, it does not
+                if (defined('OPENSSL_VERSION_TEXT') && version_compare(preg_replace('#OpenSSL (\d+\.\d+\.\d+) .*#', '$1', OPENSSL_VERSION_TEXT), '3.0.1', '>=')) {
+                    return false;
+                }
+                $this->cipher_name_openssl_ecb = 'des-ecb';
+                $this->cipher_name_openssl = 'des-' . $this->openssl_translate_mode();
+            }
+        }
+
+        return parent::isValidEngineHelper($engine);
+    }
+
+    /**
+     * Sets the key.
+     *
+     * Keys must be 64-bits long or 8 bytes long.
+     *
+     * DES also requires that every eighth bit be a parity bit, however, we'll ignore that.
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::setKey()
+     * @param string $key
+     */
+    public function setKey($key)
+    {
+        if (!($this instanceof TripleDES) && strlen($key) != 8) {
+            throw new \LengthException('Key of size ' . strlen($key) . ' not supported by this algorithm. Only keys of size 8 are supported');
+        }
+
+        // Sets the key
+        parent::setKey($key);
+    }
+
+    /**
+     * Encrypts a block
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::encryptBlock()
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::encrypt()
+     * @see self::encrypt()
+     * @param string $in
+     * @return string
+     */
+    protected function encryptBlock($in)
+    {
+        return $this->processBlock($in, self::ENCRYPT);
+    }
+
+    /**
+     * Decrypts a block
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::decryptBlock()
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::decrypt()
+     * @see self::decrypt()
+     * @param string $in
+     * @return string
+     */
+    protected function decryptBlock($in)
+    {
+        return $this->processBlock($in, self::DECRYPT);
+    }
+
+    /**
+     * Encrypts or decrypts a 64-bit block
+     *
+     * $mode should be either self::ENCRYPT or self::DECRYPT.  See
+     * {@link http://en.wikipedia.org/wiki/Image:Feistel.png Feistel.png} to get a general
+     * idea of what this function does.
+     *
+     * @see self::encryptBlock()
+     * @see self::decryptBlock()
+     * @param string $block
+     * @param int $mode
+     * @return string
+     */
+    private function processBlock($block, $mode)
+    {
+        static $sbox1, $sbox2, $sbox3, $sbox4, $sbox5, $sbox6, $sbox7, $sbox8, $shuffleip, $shuffleinvip;
+        if (!$sbox1) {
+            $sbox1 = array_map('intval', self::$sbox1);
+            $sbox2 = array_map('intval', self::$sbox2);
+            $sbox3 = array_map('intval', self::$sbox3);
+            $sbox4 = array_map('intval', self::$sbox4);
+            $sbox5 = array_map('intval', self::$sbox5);
+            $sbox6 = array_map('intval', self::$sbox6);
+            $sbox7 = array_map('intval', self::$sbox7);
+            $sbox8 = array_map('intval', self::$sbox8);
+            /* Merge $shuffle with $[inv]ipmap */
+            for ($i = 0; $i < 256; ++$i) {
+                $shuffleip[]    =  self::$shuffle[self::$ipmap[$i]];
+                $shuffleinvip[] =  self::$shuffle[self::$invipmap[$i]];
+            }
+        }
+
+        $keys  = $this->keys[$mode];
+        $ki    = -1;
+
+        // Do the initial IP permutation.
+        $t = unpack('Nl/Nr', $block);
+        list($l, $r) = [$t['l'], $t['r']];
+        $block = ($shuffleip[ $r        & 0xFF] & "\x80\x80\x80\x80\x80\x80\x80\x80") |
+                 ($shuffleip[($r >>  8) & 0xFF] & "\x40\x40\x40\x40\x40\x40\x40\x40") |
+                 ($shuffleip[($r >> 16) & 0xFF] & "\x20\x20\x20\x20\x20\x20\x20\x20") |
+                 ($shuffleip[($r >> 24) & 0xFF] & "\x10\x10\x10\x10\x10\x10\x10\x10") |
+                 ($shuffleip[ $l        & 0xFF] & "\x08\x08\x08\x08\x08\x08\x08\x08") |
+                 ($shuffleip[($l >>  8) & 0xFF] & "\x04\x04\x04\x04\x04\x04\x04\x04") |
+                 ($shuffleip[($l >> 16) & 0xFF] & "\x02\x02\x02\x02\x02\x02\x02\x02") |
+                 ($shuffleip[($l >> 24) & 0xFF] & "\x01\x01\x01\x01\x01\x01\x01\x01");
+
+        // Extract L0 and R0.
+        $t = unpack('Nl/Nr', $block);
+        list($l, $r) = [$t['l'], $t['r']];
+
+        for ($des_round = 0; $des_round < $this->des_rounds; ++$des_round) {
+            // Perform the 16 steps.
+            for ($i = 0; $i < 16; $i++) {
+                // start of "the Feistel (F) function" - see the following URL:
+                // http://en.wikipedia.org/wiki/Image:Data_Encryption_Standard_InfoBox_Diagram.png
+                // Merge key schedule.
+                $b1 = (($r >>  3) & 0x1FFFFFFF) ^ ($r << 29) ^ $keys[++$ki];
+                $b2 = (($r >> 31) & 0x00000001) ^ ($r <<  1) ^ $keys[++$ki];
+
+                // S-box indexing.
+                $t = $sbox1[($b1 >> 24) & 0x3F] ^ $sbox2[($b2 >> 24) & 0x3F] ^
+                     $sbox3[($b1 >> 16) & 0x3F] ^ $sbox4[($b2 >> 16) & 0x3F] ^
+                     $sbox5[($b1 >>  8) & 0x3F] ^ $sbox6[($b2 >>  8) & 0x3F] ^
+                     $sbox7[ $b1        & 0x3F] ^ $sbox8[ $b2        & 0x3F] ^ $l;
+                // end of "the Feistel (F) function"
+
+                $l = $r;
+                $r = $t;
+            }
+
+            // Last step should not permute L & R.
+            $t = $l;
+            $l = $r;
+            $r = $t;
+        }
+
+        // Perform the inverse IP permutation.
+        return ($shuffleinvip[($r >> 24) & 0xFF] & "\x80\x80\x80\x80\x80\x80\x80\x80") |
+               ($shuffleinvip[($l >> 24) & 0xFF] & "\x40\x40\x40\x40\x40\x40\x40\x40") |
+               ($shuffleinvip[($r >> 16) & 0xFF] & "\x20\x20\x20\x20\x20\x20\x20\x20") |
+               ($shuffleinvip[($l >> 16) & 0xFF] & "\x10\x10\x10\x10\x10\x10\x10\x10") |
+               ($shuffleinvip[($r >>  8) & 0xFF] & "\x08\x08\x08\x08\x08\x08\x08\x08") |
+               ($shuffleinvip[($l >>  8) & 0xFF] & "\x04\x04\x04\x04\x04\x04\x04\x04") |
+               ($shuffleinvip[ $r        & 0xFF] & "\x02\x02\x02\x02\x02\x02\x02\x02") |
+               ($shuffleinvip[ $l        & 0xFF] & "\x01\x01\x01\x01\x01\x01\x01\x01");
+    }
+
+    /**
+     * Creates the key schedule
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::setupKey()
+     */
+    protected function setupKey()
+    {
+        if (isset($this->kl['key']) && $this->key === $this->kl['key'] && $this->des_rounds === $this->kl['des_rounds']) {
+            // already expanded
+            return;
+        }
+        $this->kl = ['key' => $this->key, 'des_rounds' => $this->des_rounds];
+
+        static $shifts = [ // number of key bits shifted per round
+            1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1
+        ];
+
+        static $pc1map = [
+            0x00, 0x00, 0x08, 0x08, 0x04, 0x04, 0x0C, 0x0C,
+            0x02, 0x02, 0x0A, 0x0A, 0x06, 0x06, 0x0E, 0x0E,
+            0x10, 0x10, 0x18, 0x18, 0x14, 0x14, 0x1C, 0x1C,
+            0x12, 0x12, 0x1A, 0x1A, 0x16, 0x16, 0x1E, 0x1E,
+            0x20, 0x20, 0x28, 0x28, 0x24, 0x24, 0x2C, 0x2C,
+            0x22, 0x22, 0x2A, 0x2A, 0x26, 0x26, 0x2E, 0x2E,
+            0x30, 0x30, 0x38, 0x38, 0x34, 0x34, 0x3C, 0x3C,
+            0x32, 0x32, 0x3A, 0x3A, 0x36, 0x36, 0x3E, 0x3E,
+            0x40, 0x40, 0x48, 0x48, 0x44, 0x44, 0x4C, 0x4C,
+            0x42, 0x42, 0x4A, 0x4A, 0x46, 0x46, 0x4E, 0x4E,
+            0x50, 0x50, 0x58, 0x58, 0x54, 0x54, 0x5C, 0x5C,
+            0x52, 0x52, 0x5A, 0x5A, 0x56, 0x56, 0x5E, 0x5E,
+            0x60, 0x60, 0x68, 0x68, 0x64, 0x64, 0x6C, 0x6C,
+            0x62, 0x62, 0x6A, 0x6A, 0x66, 0x66, 0x6E, 0x6E,
+            0x70, 0x70, 0x78, 0x78, 0x74, 0x74, 0x7C, 0x7C,
+            0x72, 0x72, 0x7A, 0x7A, 0x76, 0x76, 0x7E, 0x7E,
+            0x80, 0x80, 0x88, 0x88, 0x84, 0x84, 0x8C, 0x8C,
+            0x82, 0x82, 0x8A, 0x8A, 0x86, 0x86, 0x8E, 0x8E,
+            0x90, 0x90, 0x98, 0x98, 0x94, 0x94, 0x9C, 0x9C,
+            0x92, 0x92, 0x9A, 0x9A, 0x96, 0x96, 0x9E, 0x9E,
+            0xA0, 0xA0, 0xA8, 0xA8, 0xA4, 0xA4, 0xAC, 0xAC,
+            0xA2, 0xA2, 0xAA, 0xAA, 0xA6, 0xA6, 0xAE, 0xAE,
+            0xB0, 0xB0, 0xB8, 0xB8, 0xB4, 0xB4, 0xBC, 0xBC,
+            0xB2, 0xB2, 0xBA, 0xBA, 0xB6, 0xB6, 0xBE, 0xBE,
+            0xC0, 0xC0, 0xC8, 0xC8, 0xC4, 0xC4, 0xCC, 0xCC,
+            0xC2, 0xC2, 0xCA, 0xCA, 0xC6, 0xC6, 0xCE, 0xCE,
+            0xD0, 0xD0, 0xD8, 0xD8, 0xD4, 0xD4, 0xDC, 0xDC,
+            0xD2, 0xD2, 0xDA, 0xDA, 0xD6, 0xD6, 0xDE, 0xDE,
+            0xE0, 0xE0, 0xE8, 0xE8, 0xE4, 0xE4, 0xEC, 0xEC,
+            0xE2, 0xE2, 0xEA, 0xEA, 0xE6, 0xE6, 0xEE, 0xEE,
+            0xF0, 0xF0, 0xF8, 0xF8, 0xF4, 0xF4, 0xFC, 0xFC,
+            0xF2, 0xF2, 0xFA, 0xFA, 0xF6, 0xF6, 0xFE, 0xFE
+        ];
+
+        // Mapping tables for the PC-2 transformation.
+        static $pc2mapc1 = [
+            0x00000000, 0x00000400, 0x00200000, 0x00200400,
+            0x00000001, 0x00000401, 0x00200001, 0x00200401,
+            0x02000000, 0x02000400, 0x02200000, 0x02200400,
+            0x02000001, 0x02000401, 0x02200001, 0x02200401
+        ];
+        static $pc2mapc2 = [
+            0x00000000, 0x00000800, 0x08000000, 0x08000800,
+            0x00010000, 0x00010800, 0x08010000, 0x08010800,
+            0x00000000, 0x00000800, 0x08000000, 0x08000800,
+            0x00010000, 0x00010800, 0x08010000, 0x08010800,
+            0x00000100, 0x00000900, 0x08000100, 0x08000900,
+            0x00010100, 0x00010900, 0x08010100, 0x08010900,
+            0x00000100, 0x00000900, 0x08000100, 0x08000900,
+            0x00010100, 0x00010900, 0x08010100, 0x08010900,
+            0x00000010, 0x00000810, 0x08000010, 0x08000810,
+            0x00010010, 0x00010810, 0x08010010, 0x08010810,
+            0x00000010, 0x00000810, 0x08000010, 0x08000810,
+            0x00010010, 0x00010810, 0x08010010, 0x08010810,
+            0x00000110, 0x00000910, 0x08000110, 0x08000910,
+            0x00010110, 0x00010910, 0x08010110, 0x08010910,
+            0x00000110, 0x00000910, 0x08000110, 0x08000910,
+            0x00010110, 0x00010910, 0x08010110, 0x08010910,
+            0x00040000, 0x00040800, 0x08040000, 0x08040800,
+            0x00050000, 0x00050800, 0x08050000, 0x08050800,
+            0x00040000, 0x00040800, 0x08040000, 0x08040800,
+            0x00050000, 0x00050800, 0x08050000, 0x08050800,
+            0x00040100, 0x00040900, 0x08040100, 0x08040900,
+            0x00050100, 0x00050900, 0x08050100, 0x08050900,
+            0x00040100, 0x00040900, 0x08040100, 0x08040900,
+            0x00050100, 0x00050900, 0x08050100, 0x08050900,
+            0x00040010, 0x00040810, 0x08040010, 0x08040810,
+            0x00050010, 0x00050810, 0x08050010, 0x08050810,
+            0x00040010, 0x00040810, 0x08040010, 0x08040810,
+            0x00050010, 0x00050810, 0x08050010, 0x08050810,
+            0x00040110, 0x00040910, 0x08040110, 0x08040910,
+            0x00050110, 0x00050910, 0x08050110, 0x08050910,
+            0x00040110, 0x00040910, 0x08040110, 0x08040910,
+            0x00050110, 0x00050910, 0x08050110, 0x08050910,
+            0x01000000, 0x01000800, 0x09000000, 0x09000800,
+            0x01010000, 0x01010800, 0x09010000, 0x09010800,
+            0x01000000, 0x01000800, 0x09000000, 0x09000800,
+            0x01010000, 0x01010800, 0x09010000, 0x09010800,
+            0x01000100, 0x01000900, 0x09000100, 0x09000900,
+            0x01010100, 0x01010900, 0x09010100, 0x09010900,
+            0x01000100, 0x01000900, 0x09000100, 0x09000900,
+            0x01010100, 0x01010900, 0x09010100, 0x09010900,
+            0x01000010, 0x01000810, 0x09000010, 0x09000810,
+            0x01010010, 0x01010810, 0x09010010, 0x09010810,
+            0x01000010, 0x01000810, 0x09000010, 0x09000810,
+            0x01010010, 0x01010810, 0x09010010, 0x09010810,
+            0x01000110, 0x01000910, 0x09000110, 0x09000910,
+            0x01010110, 0x01010910, 0x09010110, 0x09010910,
+            0x01000110, 0x01000910, 0x09000110, 0x09000910,
+            0x01010110, 0x01010910, 0x09010110, 0x09010910,
+            0x01040000, 0x01040800, 0x09040000, 0x09040800,
+            0x01050000, 0x01050800, 0x09050000, 0x09050800,
+            0x01040000, 0x01040800, 0x09040000, 0x09040800,
+            0x01050000, 0x01050800, 0x09050000, 0x09050800,
+            0x01040100, 0x01040900, 0x09040100, 0x09040900,
+            0x01050100, 0x01050900, 0x09050100, 0x09050900,
+            0x01040100, 0x01040900, 0x09040100, 0x09040900,
+            0x01050100, 0x01050900, 0x09050100, 0x09050900,
+            0x01040010, 0x01040810, 0x09040010, 0x09040810,
+            0x01050010, 0x01050810, 0x09050010, 0x09050810,
+            0x01040010, 0x01040810, 0x09040010, 0x09040810,
+            0x01050010, 0x01050810, 0x09050010, 0x09050810,
+            0x01040110, 0x01040910, 0x09040110, 0x09040910,
+            0x01050110, 0x01050910, 0x09050110, 0x09050910,
+            0x01040110, 0x01040910, 0x09040110, 0x09040910,
+            0x01050110, 0x01050910, 0x09050110, 0x09050910
+        ];
+        static $pc2mapc3 = [
+            0x00000000, 0x00000004, 0x00001000, 0x00001004,
+            0x00000000, 0x00000004, 0x00001000, 0x00001004,
+            0x10000000, 0x10000004, 0x10001000, 0x10001004,
+            0x10000000, 0x10000004, 0x10001000, 0x10001004,
+            0x00000020, 0x00000024, 0x00001020, 0x00001024,
+            0x00000020, 0x00000024, 0x00001020, 0x00001024,
+            0x10000020, 0x10000024, 0x10001020, 0x10001024,
+            0x10000020, 0x10000024, 0x10001020, 0x10001024,
+            0x00080000, 0x00080004, 0x00081000, 0x00081004,
+            0x00080000, 0x00080004, 0x00081000, 0x00081004,
+            0x10080000, 0x10080004, 0x10081000, 0x10081004,
+            0x10080000, 0x10080004, 0x10081000, 0x10081004,
+            0x00080020, 0x00080024, 0x00081020, 0x00081024,
+            0x00080020, 0x00080024, 0x00081020, 0x00081024,
+            0x10080020, 0x10080024, 0x10081020, 0x10081024,
+            0x10080020, 0x10080024, 0x10081020, 0x10081024,
+            0x20000000, 0x20000004, 0x20001000, 0x20001004,
+            0x20000000, 0x20000004, 0x20001000, 0x20001004,
+            0x30000000, 0x30000004, 0x30001000, 0x30001004,
+            0x30000000, 0x30000004, 0x30001000, 0x30001004,
+            0x20000020, 0x20000024, 0x20001020, 0x20001024,
+            0x20000020, 0x20000024, 0x20001020, 0x20001024,
+            0x30000020, 0x30000024, 0x30001020, 0x30001024,
+            0x30000020, 0x30000024, 0x30001020, 0x30001024,
+            0x20080000, 0x20080004, 0x20081000, 0x20081004,
+            0x20080000, 0x20080004, 0x20081000, 0x20081004,
+            0x30080000, 0x30080004, 0x30081000, 0x30081004,
+            0x30080000, 0x30080004, 0x30081000, 0x30081004,
+            0x20080020, 0x20080024, 0x20081020, 0x20081024,
+            0x20080020, 0x20080024, 0x20081020, 0x20081024,
+            0x30080020, 0x30080024, 0x30081020, 0x30081024,
+            0x30080020, 0x30080024, 0x30081020, 0x30081024,
+            0x00000002, 0x00000006, 0x00001002, 0x00001006,
+            0x00000002, 0x00000006, 0x00001002, 0x00001006,
+            0x10000002, 0x10000006, 0x10001002, 0x10001006,
+            0x10000002, 0x10000006, 0x10001002, 0x10001006,
+            0x00000022, 0x00000026, 0x00001022, 0x00001026,
+            0x00000022, 0x00000026, 0x00001022, 0x00001026,
+            0x10000022, 0x10000026, 0x10001022, 0x10001026,
+            0x10000022, 0x10000026, 0x10001022, 0x10001026,
+            0x00080002, 0x00080006, 0x00081002, 0x00081006,
+            0x00080002, 0x00080006, 0x00081002, 0x00081006,
+            0x10080002, 0x10080006, 0x10081002, 0x10081006,
+            0x10080002, 0x10080006, 0x10081002, 0x10081006,
+            0x00080022, 0x00080026, 0x00081022, 0x00081026,
+            0x00080022, 0x00080026, 0x00081022, 0x00081026,
+            0x10080022, 0x10080026, 0x10081022, 0x10081026,
+            0x10080022, 0x10080026, 0x10081022, 0x10081026,
+            0x20000002, 0x20000006, 0x20001002, 0x20001006,
+            0x20000002, 0x20000006, 0x20001002, 0x20001006,
+            0x30000002, 0x30000006, 0x30001002, 0x30001006,
+            0x30000002, 0x30000006, 0x30001002, 0x30001006,
+            0x20000022, 0x20000026, 0x20001022, 0x20001026,
+            0x20000022, 0x20000026, 0x20001022, 0x20001026,
+            0x30000022, 0x30000026, 0x30001022, 0x30001026,
+            0x30000022, 0x30000026, 0x30001022, 0x30001026,
+            0x20080002, 0x20080006, 0x20081002, 0x20081006,
+            0x20080002, 0x20080006, 0x20081002, 0x20081006,
+            0x30080002, 0x30080006, 0x30081002, 0x30081006,
+            0x30080002, 0x30080006, 0x30081002, 0x30081006,
+            0x20080022, 0x20080026, 0x20081022, 0x20081026,
+            0x20080022, 0x20080026, 0x20081022, 0x20081026,
+            0x30080022, 0x30080026, 0x30081022, 0x30081026,
+            0x30080022, 0x30080026, 0x30081022, 0x30081026
+        ];
+        static $pc2mapc4 = [
+            0x00000000, 0x00100000, 0x00000008, 0x00100008,
+            0x00000200, 0x00100200, 0x00000208, 0x00100208,
+            0x00000000, 0x00100000, 0x00000008, 0x00100008,
+            0x00000200, 0x00100200, 0x00000208, 0x00100208,
+            0x04000000, 0x04100000, 0x04000008, 0x04100008,
+            0x04000200, 0x04100200, 0x04000208, 0x04100208,
+            0x04000000, 0x04100000, 0x04000008, 0x04100008,
+            0x04000200, 0x04100200, 0x04000208, 0x04100208,
+            0x00002000, 0x00102000, 0x00002008, 0x00102008,
+            0x00002200, 0x00102200, 0x00002208, 0x00102208,
+            0x00002000, 0x00102000, 0x00002008, 0x00102008,
+            0x00002200, 0x00102200, 0x00002208, 0x00102208,
+            0x04002000, 0x04102000, 0x04002008, 0x04102008,
+            0x04002200, 0x04102200, 0x04002208, 0x04102208,
+            0x04002000, 0x04102000, 0x04002008, 0x04102008,
+            0x04002200, 0x04102200, 0x04002208, 0x04102208,
+            0x00000000, 0x00100000, 0x00000008, 0x00100008,
+            0x00000200, 0x00100200, 0x00000208, 0x00100208,
+            0x00000000, 0x00100000, 0x00000008, 0x00100008,
+            0x00000200, 0x00100200, 0x00000208, 0x00100208,
+            0x04000000, 0x04100000, 0x04000008, 0x04100008,
+            0x04000200, 0x04100200, 0x04000208, 0x04100208,
+            0x04000000, 0x04100000, 0x04000008, 0x04100008,
+            0x04000200, 0x04100200, 0x04000208, 0x04100208,
+            0x00002000, 0x00102000, 0x00002008, 0x00102008,
+            0x00002200, 0x00102200, 0x00002208, 0x00102208,
+            0x00002000, 0x00102000, 0x00002008, 0x00102008,
+            0x00002200, 0x00102200, 0x00002208, 0x00102208,
+            0x04002000, 0x04102000, 0x04002008, 0x04102008,
+            0x04002200, 0x04102200, 0x04002208, 0x04102208,
+            0x04002000, 0x04102000, 0x04002008, 0x04102008,
+            0x04002200, 0x04102200, 0x04002208, 0x04102208,
+            0x00020000, 0x00120000, 0x00020008, 0x00120008,
+            0x00020200, 0x00120200, 0x00020208, 0x00120208,
+            0x00020000, 0x00120000, 0x00020008, 0x00120008,
+            0x00020200, 0x00120200, 0x00020208, 0x00120208,
+            0x04020000, 0x04120000, 0x04020008, 0x04120008,
+            0x04020200, 0x04120200, 0x04020208, 0x04120208,
+            0x04020000, 0x04120000, 0x04020008, 0x04120008,
+            0x04020200, 0x04120200, 0x04020208, 0x04120208,
+            0x00022000, 0x00122000, 0x00022008, 0x00122008,
+            0x00022200, 0x00122200, 0x00022208, 0x00122208,
+            0x00022000, 0x00122000, 0x00022008, 0x00122008,
+            0x00022200, 0x00122200, 0x00022208, 0x00122208,
+            0x04022000, 0x04122000, 0x04022008, 0x04122008,
+            0x04022200, 0x04122200, 0x04022208, 0x04122208,
+            0x04022000, 0x04122000, 0x04022008, 0x04122008,
+            0x04022200, 0x04122200, 0x04022208, 0x04122208,
+            0x00020000, 0x00120000, 0x00020008, 0x00120008,
+            0x00020200, 0x00120200, 0x00020208, 0x00120208,
+            0x00020000, 0x00120000, 0x00020008, 0x00120008,
+            0x00020200, 0x00120200, 0x00020208, 0x00120208,
+            0x04020000, 0x04120000, 0x04020008, 0x04120008,
+            0x04020200, 0x04120200, 0x04020208, 0x04120208,
+            0x04020000, 0x04120000, 0x04020008, 0x04120008,
+            0x04020200, 0x04120200, 0x04020208, 0x04120208,
+            0x00022000, 0x00122000, 0x00022008, 0x00122008,
+            0x00022200, 0x00122200, 0x00022208, 0x00122208,
+            0x00022000, 0x00122000, 0x00022008, 0x00122008,
+            0x00022200, 0x00122200, 0x00022208, 0x00122208,
+            0x04022000, 0x04122000, 0x04022008, 0x04122008,
+            0x04022200, 0x04122200, 0x04022208, 0x04122208,
+            0x04022000, 0x04122000, 0x04022008, 0x04122008,
+            0x04022200, 0x04122200, 0x04022208, 0x04122208
+        ];
+        static $pc2mapd1 = [
+            0x00000000, 0x00000001, 0x08000000, 0x08000001,
+            0x00200000, 0x00200001, 0x08200000, 0x08200001,
+            0x00000002, 0x00000003, 0x08000002, 0x08000003,
+            0x00200002, 0x00200003, 0x08200002, 0x08200003
+        ];
+        static $pc2mapd2 = [
+            0x00000000, 0x00100000, 0x00000800, 0x00100800,
+            0x00000000, 0x00100000, 0x00000800, 0x00100800,
+            0x04000000, 0x04100000, 0x04000800, 0x04100800,
+            0x04000000, 0x04100000, 0x04000800, 0x04100800,
+            0x00000004, 0x00100004, 0x00000804, 0x00100804,
+            0x00000004, 0x00100004, 0x00000804, 0x00100804,
+            0x04000004, 0x04100004, 0x04000804, 0x04100804,
+            0x04000004, 0x04100004, 0x04000804, 0x04100804,
+            0x00000000, 0x00100000, 0x00000800, 0x00100800,
+            0x00000000, 0x00100000, 0x00000800, 0x00100800,
+            0x04000000, 0x04100000, 0x04000800, 0x04100800,
+            0x04000000, 0x04100000, 0x04000800, 0x04100800,
+            0x00000004, 0x00100004, 0x00000804, 0x00100804,
+            0x00000004, 0x00100004, 0x00000804, 0x00100804,
+            0x04000004, 0x04100004, 0x04000804, 0x04100804,
+            0x04000004, 0x04100004, 0x04000804, 0x04100804,
+            0x00000200, 0x00100200, 0x00000A00, 0x00100A00,
+            0x00000200, 0x00100200, 0x00000A00, 0x00100A00,
+            0x04000200, 0x04100200, 0x04000A00, 0x04100A00,
+            0x04000200, 0x04100200, 0x04000A00, 0x04100A00,
+            0x00000204, 0x00100204, 0x00000A04, 0x00100A04,
+            0x00000204, 0x00100204, 0x00000A04, 0x00100A04,
+            0x04000204, 0x04100204, 0x04000A04, 0x04100A04,
+            0x04000204, 0x04100204, 0x04000A04, 0x04100A04,
+            0x00000200, 0x00100200, 0x00000A00, 0x00100A00,
+            0x00000200, 0x00100200, 0x00000A00, 0x00100A00,
+            0x04000200, 0x04100200, 0x04000A00, 0x04100A00,
+            0x04000200, 0x04100200, 0x04000A00, 0x04100A00,
+            0x00000204, 0x00100204, 0x00000A04, 0x00100A04,
+            0x00000204, 0x00100204, 0x00000A04, 0x00100A04,
+            0x04000204, 0x04100204, 0x04000A04, 0x04100A04,
+            0x04000204, 0x04100204, 0x04000A04, 0x04100A04,
+            0x00020000, 0x00120000, 0x00020800, 0x00120800,
+            0x00020000, 0x00120000, 0x00020800, 0x00120800,
+            0x04020000, 0x04120000, 0x04020800, 0x04120800,
+            0x04020000, 0x04120000, 0x04020800, 0x04120800,
+            0x00020004, 0x00120004, 0x00020804, 0x00120804,
+            0x00020004, 0x00120004, 0x00020804, 0x00120804,
+            0x04020004, 0x04120004, 0x04020804, 0x04120804,
+            0x04020004, 0x04120004, 0x04020804, 0x04120804,
+            0x00020000, 0x00120000, 0x00020800, 0x00120800,
+            0x00020000, 0x00120000, 0x00020800, 0x00120800,
+            0x04020000, 0x04120000, 0x04020800, 0x04120800,
+            0x04020000, 0x04120000, 0x04020800, 0x04120800,
+            0x00020004, 0x00120004, 0x00020804, 0x00120804,
+            0x00020004, 0x00120004, 0x00020804, 0x00120804,
+            0x04020004, 0x04120004, 0x04020804, 0x04120804,
+            0x04020004, 0x04120004, 0x04020804, 0x04120804,
+            0x00020200, 0x00120200, 0x00020A00, 0x00120A00,
+            0x00020200, 0x00120200, 0x00020A00, 0x00120A00,
+            0x04020200, 0x04120200, 0x04020A00, 0x04120A00,
+            0x04020200, 0x04120200, 0x04020A00, 0x04120A00,
+            0x00020204, 0x00120204, 0x00020A04, 0x00120A04,
+            0x00020204, 0x00120204, 0x00020A04, 0x00120A04,
+            0x04020204, 0x04120204, 0x04020A04, 0x04120A04,
+            0x04020204, 0x04120204, 0x04020A04, 0x04120A04,
+            0x00020200, 0x00120200, 0x00020A00, 0x00120A00,
+            0x00020200, 0x00120200, 0x00020A00, 0x00120A00,
+            0x04020200, 0x04120200, 0x04020A00, 0x04120A00,
+            0x04020200, 0x04120200, 0x04020A00, 0x04120A00,
+            0x00020204, 0x00120204, 0x00020A04, 0x00120A04,
+            0x00020204, 0x00120204, 0x00020A04, 0x00120A04,
+            0x04020204, 0x04120204, 0x04020A04, 0x04120A04,
+            0x04020204, 0x04120204, 0x04020A04, 0x04120A04
+        ];
+        static $pc2mapd3 = [
+            0x00000000, 0x00010000, 0x02000000, 0x02010000,
+            0x00000020, 0x00010020, 0x02000020, 0x02010020,
+            0x00040000, 0x00050000, 0x02040000, 0x02050000,
+            0x00040020, 0x00050020, 0x02040020, 0x02050020,
+            0x00002000, 0x00012000, 0x02002000, 0x02012000,
+            0x00002020, 0x00012020, 0x02002020, 0x02012020,
+            0x00042000, 0x00052000, 0x02042000, 0x02052000,
+            0x00042020, 0x00052020, 0x02042020, 0x02052020,
+            0x00000000, 0x00010000, 0x02000000, 0x02010000,
+            0x00000020, 0x00010020, 0x02000020, 0x02010020,
+            0x00040000, 0x00050000, 0x02040000, 0x02050000,
+            0x00040020, 0x00050020, 0x02040020, 0x02050020,
+            0x00002000, 0x00012000, 0x02002000, 0x02012000,
+            0x00002020, 0x00012020, 0x02002020, 0x02012020,
+            0x00042000, 0x00052000, 0x02042000, 0x02052000,
+            0x00042020, 0x00052020, 0x02042020, 0x02052020,
+            0x00000010, 0x00010010, 0x02000010, 0x02010010,
+            0x00000030, 0x00010030, 0x02000030, 0x02010030,
+            0x00040010, 0x00050010, 0x02040010, 0x02050010,
+            0x00040030, 0x00050030, 0x02040030, 0x02050030,
+            0x00002010, 0x00012010, 0x02002010, 0x02012010,
+            0x00002030, 0x00012030, 0x02002030, 0x02012030,
+            0x00042010, 0x00052010, 0x02042010, 0x02052010,
+            0x00042030, 0x00052030, 0x02042030, 0x02052030,
+            0x00000010, 0x00010010, 0x02000010, 0x02010010,
+            0x00000030, 0x00010030, 0x02000030, 0x02010030,
+            0x00040010, 0x00050010, 0x02040010, 0x02050010,
+            0x00040030, 0x00050030, 0x02040030, 0x02050030,
+            0x00002010, 0x00012010, 0x02002010, 0x02012010,
+            0x00002030, 0x00012030, 0x02002030, 0x02012030,
+            0x00042010, 0x00052010, 0x02042010, 0x02052010,
+            0x00042030, 0x00052030, 0x02042030, 0x02052030,
+            0x20000000, 0x20010000, 0x22000000, 0x22010000,
+            0x20000020, 0x20010020, 0x22000020, 0x22010020,
+            0x20040000, 0x20050000, 0x22040000, 0x22050000,
+            0x20040020, 0x20050020, 0x22040020, 0x22050020,
+            0x20002000, 0x20012000, 0x22002000, 0x22012000,
+            0x20002020, 0x20012020, 0x22002020, 0x22012020,
+            0x20042000, 0x20052000, 0x22042000, 0x22052000,
+            0x20042020, 0x20052020, 0x22042020, 0x22052020,
+            0x20000000, 0x20010000, 0x22000000, 0x22010000,
+            0x20000020, 0x20010020, 0x22000020, 0x22010020,
+            0x20040000, 0x20050000, 0x22040000, 0x22050000,
+            0x20040020, 0x20050020, 0x22040020, 0x22050020,
+            0x20002000, 0x20012000, 0x22002000, 0x22012000,
+            0x20002020, 0x20012020, 0x22002020, 0x22012020,
+            0x20042000, 0x20052000, 0x22042000, 0x22052000,
+            0x20042020, 0x20052020, 0x22042020, 0x22052020,
+            0x20000010, 0x20010010, 0x22000010, 0x22010010,
+            0x20000030, 0x20010030, 0x22000030, 0x22010030,
+            0x20040010, 0x20050010, 0x22040010, 0x22050010,
+            0x20040030, 0x20050030, 0x22040030, 0x22050030,
+            0x20002010, 0x20012010, 0x22002010, 0x22012010,
+            0x20002030, 0x20012030, 0x22002030, 0x22012030,
+            0x20042010, 0x20052010, 0x22042010, 0x22052010,
+            0x20042030, 0x20052030, 0x22042030, 0x22052030,
+            0x20000010, 0x20010010, 0x22000010, 0x22010010,
+            0x20000030, 0x20010030, 0x22000030, 0x22010030,
+            0x20040010, 0x20050010, 0x22040010, 0x22050010,
+            0x20040030, 0x20050030, 0x22040030, 0x22050030,
+            0x20002010, 0x20012010, 0x22002010, 0x22012010,
+            0x20002030, 0x20012030, 0x22002030, 0x22012030,
+            0x20042010, 0x20052010, 0x22042010, 0x22052010,
+            0x20042030, 0x20052030, 0x22042030, 0x22052030
+        ];
+        static $pc2mapd4 = [
+            0x00000000, 0x00000400, 0x01000000, 0x01000400,
+            0x00000000, 0x00000400, 0x01000000, 0x01000400,
+            0x00000100, 0x00000500, 0x01000100, 0x01000500,
+            0x00000100, 0x00000500, 0x01000100, 0x01000500,
+            0x10000000, 0x10000400, 0x11000000, 0x11000400,
+            0x10000000, 0x10000400, 0x11000000, 0x11000400,
+            0x10000100, 0x10000500, 0x11000100, 0x11000500,
+            0x10000100, 0x10000500, 0x11000100, 0x11000500,
+            0x00080000, 0x00080400, 0x01080000, 0x01080400,
+            0x00080000, 0x00080400, 0x01080000, 0x01080400,
+            0x00080100, 0x00080500, 0x01080100, 0x01080500,
+            0x00080100, 0x00080500, 0x01080100, 0x01080500,
+            0x10080000, 0x10080400, 0x11080000, 0x11080400,
+            0x10080000, 0x10080400, 0x11080000, 0x11080400,
+            0x10080100, 0x10080500, 0x11080100, 0x11080500,
+            0x10080100, 0x10080500, 0x11080100, 0x11080500,
+            0x00000008, 0x00000408, 0x01000008, 0x01000408,
+            0x00000008, 0x00000408, 0x01000008, 0x01000408,
+            0x00000108, 0x00000508, 0x01000108, 0x01000508,
+            0x00000108, 0x00000508, 0x01000108, 0x01000508,
+            0x10000008, 0x10000408, 0x11000008, 0x11000408,
+            0x10000008, 0x10000408, 0x11000008, 0x11000408,
+            0x10000108, 0x10000508, 0x11000108, 0x11000508,
+            0x10000108, 0x10000508, 0x11000108, 0x11000508,
+            0x00080008, 0x00080408, 0x01080008, 0x01080408,
+            0x00080008, 0x00080408, 0x01080008, 0x01080408,
+            0x00080108, 0x00080508, 0x01080108, 0x01080508,
+            0x00080108, 0x00080508, 0x01080108, 0x01080508,
+            0x10080008, 0x10080408, 0x11080008, 0x11080408,
+            0x10080008, 0x10080408, 0x11080008, 0x11080408,
+            0x10080108, 0x10080508, 0x11080108, 0x11080508,
+            0x10080108, 0x10080508, 0x11080108, 0x11080508,
+            0x00001000, 0x00001400, 0x01001000, 0x01001400,
+            0x00001000, 0x00001400, 0x01001000, 0x01001400,
+            0x00001100, 0x00001500, 0x01001100, 0x01001500,
+            0x00001100, 0x00001500, 0x01001100, 0x01001500,
+            0x10001000, 0x10001400, 0x11001000, 0x11001400,
+            0x10001000, 0x10001400, 0x11001000, 0x11001400,
+            0x10001100, 0x10001500, 0x11001100, 0x11001500,
+            0x10001100, 0x10001500, 0x11001100, 0x11001500,
+            0x00081000, 0x00081400, 0x01081000, 0x01081400,
+            0x00081000, 0x00081400, 0x01081000, 0x01081400,
+            0x00081100, 0x00081500, 0x01081100, 0x01081500,
+            0x00081100, 0x00081500, 0x01081100, 0x01081500,
+            0x10081000, 0x10081400, 0x11081000, 0x11081400,
+            0x10081000, 0x10081400, 0x11081000, 0x11081400,
+            0x10081100, 0x10081500, 0x11081100, 0x11081500,
+            0x10081100, 0x10081500, 0x11081100, 0x11081500,
+            0x00001008, 0x00001408, 0x01001008, 0x01001408,
+            0x00001008, 0x00001408, 0x01001008, 0x01001408,
+            0x00001108, 0x00001508, 0x01001108, 0x01001508,
+            0x00001108, 0x00001508, 0x01001108, 0x01001508,
+            0x10001008, 0x10001408, 0x11001008, 0x11001408,
+            0x10001008, 0x10001408, 0x11001008, 0x11001408,
+            0x10001108, 0x10001508, 0x11001108, 0x11001508,
+            0x10001108, 0x10001508, 0x11001108, 0x11001508,
+            0x00081008, 0x00081408, 0x01081008, 0x01081408,
+            0x00081008, 0x00081408, 0x01081008, 0x01081408,
+            0x00081108, 0x00081508, 0x01081108, 0x01081508,
+            0x00081108, 0x00081508, 0x01081108, 0x01081508,
+            0x10081008, 0x10081408, 0x11081008, 0x11081408,
+            0x10081008, 0x10081408, 0x11081008, 0x11081408,
+            0x10081108, 0x10081508, 0x11081108, 0x11081508,
+            0x10081108, 0x10081508, 0x11081108, 0x11081508
+        ];
+
+        $keys = [];
+        for ($des_round = 0; $des_round < $this->des_rounds; ++$des_round) {
+            // pad the key and remove extra characters as appropriate.
+            $key = str_pad(substr($this->key, $des_round * 8, 8), 8, "\0");
+
+            // Perform the PC/1 transformation and compute C and D.
+            $t = unpack('Nl/Nr', $key);
+            list($l, $r) = [$t['l'], $t['r']];
+            $key = (self::$shuffle[$pc1map[ $r        & 0xFF]] & "\x80\x80\x80\x80\x80\x80\x80\x00") |
+                   (self::$shuffle[$pc1map[($r >>  8) & 0xFF]] & "\x40\x40\x40\x40\x40\x40\x40\x00") |
+                   (self::$shuffle[$pc1map[($r >> 16) & 0xFF]] & "\x20\x20\x20\x20\x20\x20\x20\x00") |
+                   (self::$shuffle[$pc1map[($r >> 24) & 0xFF]] & "\x10\x10\x10\x10\x10\x10\x10\x00") |
+                   (self::$shuffle[$pc1map[ $l        & 0xFF]] & "\x08\x08\x08\x08\x08\x08\x08\x00") |
+                   (self::$shuffle[$pc1map[($l >>  8) & 0xFF]] & "\x04\x04\x04\x04\x04\x04\x04\x00") |
+                   (self::$shuffle[$pc1map[($l >> 16) & 0xFF]] & "\x02\x02\x02\x02\x02\x02\x02\x00") |
+                   (self::$shuffle[$pc1map[($l >> 24) & 0xFF]] & "\x01\x01\x01\x01\x01\x01\x01\x00");
+            $key = unpack('Nc/Nd', $key);
+            $c = ( $key['c'] >> 4) & 0x0FFFFFFF;
+            $d = (($key['d'] >> 4) & 0x0FFFFFF0) | ($key['c'] & 0x0F);
+
+            $keys[$des_round] = [
+                self::ENCRYPT => [],
+                self::DECRYPT => array_fill(0, 32, 0)
+            ];
+            for ($i = 0, $ki = 31; $i < 16; ++$i, $ki -= 2) {
+                $c <<= $shifts[$i];
+                $c = ($c | ($c >> 28)) & 0x0FFFFFFF;
+                $d <<= $shifts[$i];
+                $d = ($d | ($d >> 28)) & 0x0FFFFFFF;
+
+                // Perform the PC-2 transformation.
+                $cp = $pc2mapc1[ $c >> 24        ] | $pc2mapc2[($c >> 16) & 0xFF] |
+                      $pc2mapc3[($c >>  8) & 0xFF] | $pc2mapc4[ $c        & 0xFF];
+                $dp = $pc2mapd1[ $d >> 24        ] | $pc2mapd2[($d >> 16) & 0xFF] |
+                      $pc2mapd3[($d >>  8) & 0xFF] | $pc2mapd4[ $d        & 0xFF];
+
+                // Reorder: odd bytes/even bytes. Push the result in key schedule.
+                $val1 = ( $cp        & intval(0xFF000000)) | (($cp <<  8) & 0x00FF0000) |
+                        (($dp >> 16) & 0x0000FF00) | (($dp >>  8) & 0x000000FF);
+                $val2 = (($cp <<  8) & intval(0xFF000000)) | (($cp << 16) & 0x00FF0000) |
+                        (($dp >>  8) & 0x0000FF00) | ( $dp        & 0x000000FF);
+                $keys[$des_round][self::ENCRYPT][       ] = $val1;
+                $keys[$des_round][self::DECRYPT][$ki - 1] = $val1;
+                $keys[$des_round][self::ENCRYPT][       ] = $val2;
+                $keys[$des_round][self::DECRYPT][$ki    ] = $val2;
+            }
+        }
+
+        switch ($this->des_rounds) {
+            case 3: // 3DES keys
+                $this->keys = [
+                    self::ENCRYPT => array_merge(
+                        $keys[0][self::ENCRYPT],
+                        $keys[1][self::DECRYPT],
+                        $keys[2][self::ENCRYPT]
+                    ),
+                    self::DECRYPT => array_merge(
+                        $keys[2][self::DECRYPT],
+                        $keys[1][self::ENCRYPT],
+                        $keys[0][self::DECRYPT]
+                    )
+                ];
+                break;
+            // case 1: // DES keys
+            default:
+                $this->keys = [
+                    self::ENCRYPT => $keys[0][self::ENCRYPT],
+                    self::DECRYPT => $keys[0][self::DECRYPT]
+                ];
+        }
+    }
+
+    /**
+     * Setup the performance-optimized function for de/encrypt()
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::setupInlineCrypt()
+     */
+    protected function setupInlineCrypt()
+    {
+        // Engine configuration for:
+        // -  DES ($des_rounds == 1) or
+        // - 3DES ($des_rounds == 3)
+        $des_rounds = $this->des_rounds;
+
+        $init_crypt = 'static $sbox1, $sbox2, $sbox3, $sbox4, $sbox5, $sbox6, $sbox7, $sbox8, $shuffleip, $shuffleinvip;
+            if (!$sbox1) {
+                $sbox1 = array_map("intval", self::$sbox1);
+                $sbox2 = array_map("intval", self::$sbox2);
+                $sbox3 = array_map("intval", self::$sbox3);
+                $sbox4 = array_map("intval", self::$sbox4);
+                $sbox5 = array_map("intval", self::$sbox5);
+                $sbox6 = array_map("intval", self::$sbox6);
+                $sbox7 = array_map("intval", self::$sbox7);
+                $sbox8 = array_map("intval", self::$sbox8);'
+                /* Merge $shuffle with $[inv]ipmap */ . '
+                for ($i = 0; $i < 256; ++$i) {
+                    $shuffleip[]    =  self::$shuffle[self::$ipmap[$i]];
+                    $shuffleinvip[] =  self::$shuffle[self::$invipmap[$i]];
+                }
+            }
+        ';
+
+        $k = [
+            self::ENCRYPT => $this->keys[self::ENCRYPT],
+            self::DECRYPT => $this->keys[self::DECRYPT]
+        ];
+        $init_encrypt = '';
+        $init_decrypt = '';
+
+        // Creating code for en- and decryption.
+        $crypt_block = [];
+        foreach ([self::ENCRYPT, self::DECRYPT] as $c) {
+            /* Do the initial IP permutation. */
+            $crypt_block[$c] = '
+                $in = unpack("N*", $in);
+                $l  = $in[1];
+                $r  = $in[2];
+                $in = unpack("N*",
+                    ($shuffleip[ $r        & 0xFF] & "\x80\x80\x80\x80\x80\x80\x80\x80") |
+                    ($shuffleip[($r >>  8) & 0xFF] & "\x40\x40\x40\x40\x40\x40\x40\x40") |
+                    ($shuffleip[($r >> 16) & 0xFF] & "\x20\x20\x20\x20\x20\x20\x20\x20") |
+                    ($shuffleip[($r >> 24) & 0xFF] & "\x10\x10\x10\x10\x10\x10\x10\x10") |
+                    ($shuffleip[ $l        & 0xFF] & "\x08\x08\x08\x08\x08\x08\x08\x08") |
+                    ($shuffleip[($l >>  8) & 0xFF] & "\x04\x04\x04\x04\x04\x04\x04\x04") |
+                    ($shuffleip[($l >> 16) & 0xFF] & "\x02\x02\x02\x02\x02\x02\x02\x02") |
+                    ($shuffleip[($l >> 24) & 0xFF] & "\x01\x01\x01\x01\x01\x01\x01\x01")
+                );
+                ' . /* Extract L0 and R0 */ '
+                $l = $in[1];
+                $r = $in[2];
+            ';
+
+            $l = '$l';
+            $r = '$r';
+
+            // Perform DES or 3DES.
+            for ($ki = -1, $des_round = 0; $des_round < $des_rounds; ++$des_round) {
+                // Perform the 16 steps.
+                for ($i = 0; $i < 16; ++$i) {
+                    // start of "the Feistel (F) function" - see the following URL:
+                    // http://en.wikipedia.org/wiki/Image:Data_Encryption_Standard_InfoBox_Diagram.png
+                    // Merge key schedule.
+                    $crypt_block[$c] .= '
+                        $b1 = ((' . $r . ' >>  3) & 0x1FFFFFFF)  ^ (' . $r . ' << 29) ^ ' . $k[$c][++$ki] . ';
+                        $b2 = ((' . $r . ' >> 31) & 0x00000001)  ^ (' . $r . ' <<  1) ^ ' . $k[$c][++$ki] . ';' .
+                        /* S-box indexing. */
+                        $l . ' = $sbox1[($b1 >> 24) & 0x3F] ^ $sbox2[($b2 >> 24) & 0x3F] ^
+                                 $sbox3[($b1 >> 16) & 0x3F] ^ $sbox4[($b2 >> 16) & 0x3F] ^
+                                 $sbox5[($b1 >>  8) & 0x3F] ^ $sbox6[($b2 >>  8) & 0x3F] ^
+                                 $sbox7[ $b1        & 0x3F] ^ $sbox8[ $b2        & 0x3F] ^ ' . $l . ';
+                    ';
+                    // end of "the Feistel (F) function"
+
+                    // swap L & R
+                    list($l, $r) = [$r, $l];
+                }
+                list($l, $r) = [$r, $l];
+            }
+
+            // Perform the inverse IP permutation.
+            $crypt_block[$c] .= '$in =
+                ($shuffleinvip[($l >> 24) & 0xFF] & "\x80\x80\x80\x80\x80\x80\x80\x80") |
+                ($shuffleinvip[($r >> 24) & 0xFF] & "\x40\x40\x40\x40\x40\x40\x40\x40") |
+                ($shuffleinvip[($l >> 16) & 0xFF] & "\x20\x20\x20\x20\x20\x20\x20\x20") |
+                ($shuffleinvip[($r >> 16) & 0xFF] & "\x10\x10\x10\x10\x10\x10\x10\x10") |
+                ($shuffleinvip[($l >>  8) & 0xFF] & "\x08\x08\x08\x08\x08\x08\x08\x08") |
+                ($shuffleinvip[($r >>  8) & 0xFF] & "\x04\x04\x04\x04\x04\x04\x04\x04") |
+                ($shuffleinvip[ $l        & 0xFF] & "\x02\x02\x02\x02\x02\x02\x02\x02") |
+                ($shuffleinvip[ $r        & 0xFF] & "\x01\x01\x01\x01\x01\x01\x01\x01");
+            ';
+        }
+
+        // Creates the inline-crypt function
+        $this->inline_crypt = $this->createInlineCryptFunction(
+            [
+               'init_crypt'    => $init_crypt,
+               'init_encrypt'  => $init_encrypt,
+               'init_decrypt'  => $init_decrypt,
+               'encrypt_block' => $crypt_block[self::ENCRYPT],
+               'decrypt_block' => $crypt_block[self::DECRYPT]
+            ]
+        );
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/DH.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/DH.php
new file mode 100644
index 0000000..e1deaf0
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/DH.php
@@ -0,0 +1,405 @@
+<?php
+
+/**
+ * Pure-PHP (EC)DH implementation
+ *
+ * PHP version 5
+ *
+ * Here's an example of how to compute a shared secret with this library:
+ * <code>
+ * <?php
+ * include 'vendor/autoload.php';
+ *
+ * $ourPrivate = \phpseclib3\Crypt\DH::createKey();
+ * $secret = DH::computeSecret($ourPrivate, $theirPublic);
+ *
+ * ?>
+ * </code>
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt;
+
+use phpseclib3\Crypt\Common\AsymmetricKey;
+use phpseclib3\Crypt\DH\Parameters;
+use phpseclib3\Crypt\DH\PrivateKey;
+use phpseclib3\Crypt\DH\PublicKey;
+use phpseclib3\Exception\NoKeyLoadedException;
+use phpseclib3\Exception\UnsupportedOperationException;
+use phpseclib3\Math\BigInteger;
+
+/**
+ * Pure-PHP (EC)DH implementation
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class DH extends AsymmetricKey
+{
+    /**
+     * Algorithm Name
+     *
+     * @var string
+     */
+    const ALGORITHM = 'DH';
+
+    /**
+     * DH prime
+     *
+     * @var \phpseclib3\Math\BigInteger
+     */
+    protected $prime;
+
+    /**
+     * DH Base
+     *
+     * Prime divisor of p-1
+     *
+     * @var \phpseclib3\Math\BigInteger
+     */
+    protected $base;
+
+    /**
+     * Public Key
+     *
+     * @var \phpseclib3\Math\BigInteger
+     */
+    protected $publicKey;
+
+    /**
+     * Create DH parameters
+     *
+     * This method is a bit polymorphic. It can take any of the following:
+     *  - two BigInteger's (prime and base)
+     *  - an integer representing the size of the prime in bits (the base is assumed to be 2)
+     *  - a string (eg. diffie-hellman-group14-sha1)
+     *
+     * @return Parameters
+     */
+    public static function createParameters(...$args)
+    {
+        $class = new \ReflectionClass(static::class);
+        if ($class->isFinal()) {
+            throw new \RuntimeException('createParameters() should not be called from final classes (' . static::class . ')');
+        }
+
+        $params = new Parameters();
+        if (count($args) == 2 && $args[0] instanceof BigInteger && $args[1] instanceof BigInteger) {
+            //if (!$args[0]->isPrime()) {
+            //    throw new \InvalidArgumentException('The first parameter should be a prime number');
+            //}
+            $params->prime = $args[0];
+            $params->base = $args[1];
+            return $params;
+        } elseif (count($args) == 1 && is_numeric($args[0])) {
+            $params->prime = BigInteger::randomPrime($args[0]);
+            $params->base = new BigInteger(2);
+            return $params;
+        } elseif (count($args) != 1 || !is_string($args[0])) {
+            throw new \InvalidArgumentException('Valid parameters are either: two BigInteger\'s (prime and base), a single integer (the length of the prime; base is assumed to be 2) or a string');
+        }
+        switch ($args[0]) {
+            // see http://tools.ietf.org/html/rfc2409#section-6.2 and
+            // http://tools.ietf.org/html/rfc2412, appendex E
+            case 'diffie-hellman-group1-sha1':
+                $prime = 'FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E088A67CC74' .
+                         '020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B302B0A6DF25F1437' .
+                         '4FE1356D6D51C245E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED' .
+                         'EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE65381FFFFFFFFFFFFFFFF';
+                break;
+            // see http://tools.ietf.org/html/rfc3526#section-3
+            case 'diffie-hellman-group14-sha1': // 2048-bit MODP Group
+            case 'diffie-hellman-group14-sha256':
+                $prime = 'FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E088A67CC74' .
+                         '020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B302B0A6DF25F1437' .
+                         '4FE1356D6D51C245E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED' .
+                         'EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3DC2007CB8A163BF05' .
+                         '98DA48361C55D39A69163FA8FD24CF5F83655D23DCA3AD961C62F356208552BB' .
+                         '9ED529077096966D670C354E4ABC9804F1746C08CA18217C32905E462E36CE3B' .
+                         'E39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9DE2BCBF695581718' .
+                         '3995497CEA956AE515D2261898FA051015728E5A8AACAA68FFFFFFFFFFFFFFFF';
+                break;
+            // see https://tools.ietf.org/html/rfc3526#section-4
+            case 'diffie-hellman-group15-sha512': // 3072-bit MODP Group
+                $prime = 'FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E088A67CC74' .
+                         '020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B302B0A6DF25F1437' .
+                         '4FE1356D6D51C245E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED' .
+                         'EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3DC2007CB8A163BF05' .
+                         '98DA48361C55D39A69163FA8FD24CF5F83655D23DCA3AD961C62F356208552BB' .
+                         '9ED529077096966D670C354E4ABC9804F1746C08CA18217C32905E462E36CE3B' .
+                         'E39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9DE2BCBF695581718' .
+                         '3995497CEA956AE515D2261898FA051015728E5A8AAAC42DAD33170D04507A33' .
+                         'A85521ABDF1CBA64ECFB850458DBEF0A8AEA71575D060C7DB3970F85A6E1E4C7' .
+                         'ABF5AE8CDB0933D71E8C94E04A25619DCEE3D2261AD2EE6BF12FFA06D98A0864' .
+                         'D87602733EC86A64521F2B18177B200CBBE117577A615D6C770988C0BAD946E2' .
+                         '08E24FA074E5AB3143DB5BFCE0FD108E4B82D120A93AD2CAFFFFFFFFFFFFFFFF';
+                break;
+            // see https://tools.ietf.org/html/rfc3526#section-5
+            case 'diffie-hellman-group16-sha512': // 4096-bit MODP Group
+                $prime = 'FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E088A67CC74' .
+                         '020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B302B0A6DF25F1437' .
+                         '4FE1356D6D51C245E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED' .
+                         'EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3DC2007CB8A163BF05' .
+                         '98DA48361C55D39A69163FA8FD24CF5F83655D23DCA3AD961C62F356208552BB' .
+                         '9ED529077096966D670C354E4ABC9804F1746C08CA18217C32905E462E36CE3B' .
+                         'E39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9DE2BCBF695581718' .
+                         '3995497CEA956AE515D2261898FA051015728E5A8AAAC42DAD33170D04507A33' .
+                         'A85521ABDF1CBA64ECFB850458DBEF0A8AEA71575D060C7DB3970F85A6E1E4C7' .
+                         'ABF5AE8CDB0933D71E8C94E04A25619DCEE3D2261AD2EE6BF12FFA06D98A0864' .
+                         'D87602733EC86A64521F2B18177B200CBBE117577A615D6C770988C0BAD946E2' .
+                         '08E24FA074E5AB3143DB5BFCE0FD108E4B82D120A92108011A723C12A787E6D7' .
+                         '88719A10BDBA5B2699C327186AF4E23C1A946834B6150BDA2583E9CA2AD44CE8' .
+                         'DBBBC2DB04DE8EF92E8EFC141FBECAA6287C59474E6BC05D99B2964FA090C3A2' .
+                         '233BA186515BE7ED1F612970CEE2D7AFB81BDD762170481CD0069127D5B05AA9' .
+                         '93B4EA988D8FDDC186FFB7DC90A6C08F4DF435C934063199FFFFFFFFFFFFFFFF';
+                break;
+            // see https://tools.ietf.org/html/rfc3526#section-6
+            case 'diffie-hellman-group17-sha512': // 6144-bit MODP Group
+                $prime = 'FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E088A67CC74' .
+                         '020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B302B0A6DF25F1437' .
+                         '4FE1356D6D51C245E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED' .
+                         'EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3DC2007CB8A163BF05' .
+                         '98DA48361C55D39A69163FA8FD24CF5F83655D23DCA3AD961C62F356208552BB' .
+                         '9ED529077096966D670C354E4ABC9804F1746C08CA18217C32905E462E36CE3B' .
+                         'E39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9DE2BCBF695581718' .
+                         '3995497CEA956AE515D2261898FA051015728E5A8AAAC42DAD33170D04507A33' .
+                         'A85521ABDF1CBA64ECFB850458DBEF0A8AEA71575D060C7DB3970F85A6E1E4C7' .
+                         'ABF5AE8CDB0933D71E8C94E04A25619DCEE3D2261AD2EE6BF12FFA06D98A0864' .
+                         'D87602733EC86A64521F2B18177B200CBBE117577A615D6C770988C0BAD946E2' .
+                         '08E24FA074E5AB3143DB5BFCE0FD108E4B82D120A92108011A723C12A787E6D7' .
+                         '88719A10BDBA5B2699C327186AF4E23C1A946834B6150BDA2583E9CA2AD44CE8' .
+                         'DBBBC2DB04DE8EF92E8EFC141FBECAA6287C59474E6BC05D99B2964FA090C3A2' .
+                         '233BA186515BE7ED1F612970CEE2D7AFB81BDD762170481CD0069127D5B05AA9' .
+                         '93B4EA988D8FDDC186FFB7DC90A6C08F4DF435C93402849236C3FAB4D27C7026' .
+                         'C1D4DCB2602646DEC9751E763DBA37BDF8FF9406AD9E530EE5DB382F413001AE' .
+                         'B06A53ED9027D831179727B0865A8918DA3EDBEBCF9B14ED44CE6CBACED4BB1B' .
+                         'DB7F1447E6CC254B332051512BD7AF426FB8F401378CD2BF5983CA01C64B92EC' .
+                         'F032EA15D1721D03F482D7CE6E74FEF6D55E702F46980C82B5A84031900B1C9E' .
+                         '59E7C97FBEC7E8F323A97A7E36CC88BE0F1D45B7FF585AC54BD407B22B4154AA' .
+                         'CC8F6D7EBF48E1D814CC5ED20F8037E0A79715EEF29BE32806A1D58BB7C5DA76' .
+                         'F550AA3D8A1FBFF0EB19CCB1A313D55CDA56C9EC2EF29632387FE8D76E3C0468' .
+                         '043E8F663F4860EE12BF2D5B0B7474D6E694F91E6DCC4024FFFFFFFFFFFFFFFF';
+                break;
+            // see https://tools.ietf.org/html/rfc3526#section-7
+            case 'diffie-hellman-group18-sha512': // 8192-bit MODP Group
+                $prime = 'FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E088A67CC74' .
+                         '020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B302B0A6DF25F1437' .
+                         '4FE1356D6D51C245E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED' .
+                         'EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3DC2007CB8A163BF05' .
+                         '98DA48361C55D39A69163FA8FD24CF5F83655D23DCA3AD961C62F356208552BB' .
+                         '9ED529077096966D670C354E4ABC9804F1746C08CA18217C32905E462E36CE3B' .
+                         'E39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9DE2BCBF695581718' .
+                         '3995497CEA956AE515D2261898FA051015728E5A8AAAC42DAD33170D04507A33' .
+                         'A85521ABDF1CBA64ECFB850458DBEF0A8AEA71575D060C7DB3970F85A6E1E4C7' .
+                         'ABF5AE8CDB0933D71E8C94E04A25619DCEE3D2261AD2EE6BF12FFA06D98A0864' .
+                         'D87602733EC86A64521F2B18177B200CBBE117577A615D6C770988C0BAD946E2' .
+                         '08E24FA074E5AB3143DB5BFCE0FD108E4B82D120A92108011A723C12A787E6D7' .
+                         '88719A10BDBA5B2699C327186AF4E23C1A946834B6150BDA2583E9CA2AD44CE8' .
+                         'DBBBC2DB04DE8EF92E8EFC141FBECAA6287C59474E6BC05D99B2964FA090C3A2' .
+                         '233BA186515BE7ED1F612970CEE2D7AFB81BDD762170481CD0069127D5B05AA9' .
+                         '93B4EA988D8FDDC186FFB7DC90A6C08F4DF435C93402849236C3FAB4D27C7026' .
+                         'C1D4DCB2602646DEC9751E763DBA37BDF8FF9406AD9E530EE5DB382F413001AE' .
+                         'B06A53ED9027D831179727B0865A8918DA3EDBEBCF9B14ED44CE6CBACED4BB1B' .
+                         'DB7F1447E6CC254B332051512BD7AF426FB8F401378CD2BF5983CA01C64B92EC' .
+                         'F032EA15D1721D03F482D7CE6E74FEF6D55E702F46980C82B5A84031900B1C9E' .
+                         '59E7C97FBEC7E8F323A97A7E36CC88BE0F1D45B7FF585AC54BD407B22B4154AA' .
+                         'CC8F6D7EBF48E1D814CC5ED20F8037E0A79715EEF29BE32806A1D58BB7C5DA76' .
+                         'F550AA3D8A1FBFF0EB19CCB1A313D55CDA56C9EC2EF29632387FE8D76E3C0468' .
+                         '043E8F663F4860EE12BF2D5B0B7474D6E694F91E6DBE115974A3926F12FEE5E4' .
+                         '38777CB6A932DF8CD8BEC4D073B931BA3BC832B68D9DD300741FA7BF8AFC47ED' .
+                         '2576F6936BA424663AAB639C5AE4F5683423B4742BF1C978238F16CBE39D652D' .
+                         'E3FDB8BEFC848AD922222E04A4037C0713EB57A81A23F0C73473FC646CEA306B' .
+                         '4BCBC8862F8385DDFA9D4B7FA2C087E879683303ED5BDD3A062B3CF5B3A278A6' .
+                         '6D2A13F83F44F82DDF310EE074AB6A364597E899A0255DC164F31CC50846851D' .
+                         'F9AB48195DED7EA1B1D510BD7EE74D73FAF36BC31ECFA268359046F4EB879F92' .
+                         '4009438B481C6CD7889A002ED5EE382BC9190DA6FC026E479558E4475677E9AA' .
+                         '9E3050E2765694DFC81F56E880B96E7160C980DD98EDD3DFFFFFFFFFFFFFFFFF';
+                break;
+            default:
+                throw new \InvalidArgumentException('Invalid named prime provided');
+        }
+
+        $params->prime = new BigInteger($prime, 16);
+        $params->base = new BigInteger(2);
+
+        return $params;
+    }
+
+    /**
+     * Create public / private key pair.
+     *
+     * The rationale for the second parameter is described in http://tools.ietf.org/html/rfc4419#section-6.2 :
+     *
+     * "To increase the speed of the key exchange, both client and server may
+     *  reduce the size of their private exponents.  It should be at least
+     *  twice as long as the key material that is generated from the shared
+     *  secret.  For more details, see the paper by van Oorschot and Wiener
+     *  [VAN-OORSCHOT]."
+     *
+     * $length is in bits
+     *
+     * @param Parameters $params
+     * @param int $length optional
+     * @return DH\PrivateKey
+     */
+    public static function createKey(Parameters $params, $length = 0)
+    {
+        $class = new \ReflectionClass(static::class);
+        if ($class->isFinal()) {
+            throw new \RuntimeException('createKey() should not be called from final classes (' . static::class . ')');
+        }
+
+        $one = new BigInteger(1);
+        if ($length) {
+            $max = $one->bitwise_leftShift($length);
+            $max = $max->subtract($one);
+        } else {
+            $max = $params->prime->subtract($one);
+        }
+
+        $key = new PrivateKey();
+        $key->prime = $params->prime;
+        $key->base = $params->base;
+        $key->privateKey = BigInteger::randomRange($one, $max);
+        $key->publicKey = $key->base->powMod($key->privateKey, $key->prime);
+        return $key;
+    }
+
+    /**
+     * Compute Shared Secret
+     *
+     * @param PrivateKey|EC $private
+     * @param PublicKey|BigInteger|string $public
+     * @return mixed
+     */
+    public static function computeSecret($private, $public)
+    {
+        if ($private instanceof PrivateKey) { // DH\PrivateKey
+            switch (true) {
+                case $public instanceof PublicKey:
+                    if (!$private->prime->equals($public->prime) || !$private->base->equals($public->base)) {
+                        throw new \InvalidArgumentException('The public and private key do not share the same prime and / or base numbers');
+                    }
+                    return $public->publicKey->powMod($private->privateKey, $private->prime)->toBytes(true);
+                case is_string($public):
+                    $public = new BigInteger($public, -256);
+                    // fall-through
+                case $public instanceof BigInteger:
+                    return $public->powMod($private->privateKey, $private->prime)->toBytes(true);
+                default:
+                    throw new \InvalidArgumentException('$public needs to be an instance of DH\PublicKey, a BigInteger or a string');
+            }
+        }
+
+        if ($private instanceof EC\PrivateKey) {
+            switch (true) {
+                case $public instanceof EC\PublicKey:
+                    $public = $public->getEncodedCoordinates();
+                    // fall-through
+                case is_string($public):
+                    $point = $private->multiply($public);
+                    switch ($private->getCurve()) {
+                        case 'Curve25519':
+                        case 'Curve448':
+                            $secret = $point;
+                            break;
+                        default:
+                            // according to https://www.secg.org/sec1-v2.pdf#page=33 only X is returned
+                            $secret = substr($point, 1, (strlen($point) - 1) >> 1);
+                    }
+                    /*
+                    if (($secret[0] & "\x80") === "\x80") {
+                        $secret = "\0$secret";
+                    }
+                    */
+                    return $secret;
+                default:
+                    throw new \InvalidArgumentException('$public needs to be an instance of EC\PublicKey or a string (an encoded coordinate)');
+            }
+        }
+    }
+
+    /**
+     * Load the key
+     *
+     * @param string $key
+     * @param string $password optional
+     * @return AsymmetricKey
+     */
+    public static function load($key, $password = false)
+    {
+        try {
+            return EC::load($key, $password);
+        } catch (NoKeyLoadedException $e) {
+        }
+
+        return parent::load($key, $password);
+    }
+
+    /**
+     * OnLoad Handler
+     *
+     * @return bool
+     */
+    protected static function onLoad(array $components)
+    {
+        if (!isset($components['privateKey']) && !isset($components['publicKey'])) {
+            $new = new Parameters();
+        } else {
+            $new = isset($components['privateKey']) ?
+                new PrivateKey() :
+                new PublicKey();
+        }
+
+        $new->prime = $components['prime'];
+        $new->base = $components['base'];
+
+        if (isset($components['privateKey'])) {
+            $new->privateKey = $components['privateKey'];
+        }
+        if (isset($components['publicKey'])) {
+            $new->publicKey = $components['publicKey'];
+        }
+
+        return $new;
+    }
+
+    /**
+     * Determines which hashing function should be used
+     *
+     * @param string $hash
+     */
+    public function withHash($hash)
+    {
+        throw new UnsupportedOperationException('DH does not use a hash algorithm');
+    }
+
+    /**
+     * Returns the hash algorithm currently being used
+     *
+     */
+    public function getHash()
+    {
+        throw new UnsupportedOperationException('DH does not use a hash algorithm');
+    }
+
+    /**
+     * Returns the parameters
+     *
+     * A public / private key is only returned if the currently loaded "key" contains an x or y
+     * value.
+     *
+     * @see self::getPublicKey()
+     * @return mixed
+     */
+    public function getParameters()
+    {
+        $type = DH::validatePlugin('Keys', 'PKCS1', 'saveParameters');
+
+        $key = $type::saveParameters($this->prime, $this->base);
+        return DH::load($key, 'PKCS1');
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/DH/Formats/Keys/PKCS1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/DH/Formats/Keys/PKCS1.php
new file mode 100644
index 0000000..65a0a5d
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/DH/Formats/Keys/PKCS1.php
@@ -0,0 +1,77 @@
+<?php
+
+/**
+ * "PKCS1" Formatted EC Key Handler
+ *
+ * PHP version 5
+ *
+ * Processes keys with the following headers:
+ *
+ * -----BEGIN DH PARAMETERS-----
+ *
+ * Technically, PKCS1 is for RSA keys, only, but we're using PKCS1 to describe
+ * DSA, whose format isn't really formally described anywhere, so might as well
+ * use it to describe this, too.
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\DH\Formats\Keys;
+
+use phpseclib3\Crypt\Common\Formats\Keys\PKCS1 as Progenitor;
+use phpseclib3\File\ASN1;
+use phpseclib3\File\ASN1\Maps;
+use phpseclib3\Math\BigInteger;
+
+/**
+ * "PKCS1" Formatted DH Key Handler
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class PKCS1 extends Progenitor
+{
+    /**
+     * Break a public or private key down into its constituent components
+     *
+     * @param string $key
+     * @param string $password optional
+     * @return array
+     */
+    public static function load($key, $password = '')
+    {
+        $key = parent::load($key, $password);
+
+        $decoded = ASN1::decodeBER($key);
+        if (!$decoded) {
+            throw new \RuntimeException('Unable to decode BER');
+        }
+
+        $components = ASN1::asn1map($decoded[0], Maps\DHParameter::MAP);
+        if (!is_array($components)) {
+            throw new \RuntimeException('Unable to perform ASN1 mapping on parameters');
+        }
+
+        return $components;
+    }
+
+    /**
+     * Convert EC parameters to the appropriate format
+     *
+     * @return string
+     */
+    public static function saveParameters(BigInteger $prime, BigInteger $base, array $options = [])
+    {
+        $params = [
+            'prime' => $prime,
+            'base' => $base
+        ];
+        $params = ASN1::encodeDER($params, Maps\DHParameter::MAP);
+
+        return "-----BEGIN DH PARAMETERS-----\r\n" .
+               chunk_split(base64_encode($params), 64) .
+               "-----END DH PARAMETERS-----\r\n";
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/DH/Formats/Keys/PKCS8.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/DH/Formats/Keys/PKCS8.php
new file mode 100644
index 0000000..c330a3c
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/DH/Formats/Keys/PKCS8.php
@@ -0,0 +1,132 @@
+<?php
+
+/**
+ * PKCS#8 Formatted DH Key Handler
+ *
+ * PHP version 5
+ *
+ * Processes keys with the following headers:
+ *
+ * -----BEGIN ENCRYPTED PRIVATE KEY-----
+ * -----BEGIN PRIVATE KEY-----
+ * -----BEGIN PUBLIC KEY-----
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\DH\Formats\Keys;
+
+use phpseclib3\Crypt\Common\Formats\Keys\PKCS8 as Progenitor;
+use phpseclib3\File\ASN1;
+use phpseclib3\File\ASN1\Maps;
+use phpseclib3\Math\BigInteger;
+
+/**
+ * PKCS#8 Formatted DH Key Handler
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class PKCS8 extends Progenitor
+{
+    /**
+     * OID Name
+     *
+     * @var string
+     */
+    const OID_NAME = 'dhKeyAgreement';
+
+    /**
+     * OID Value
+     *
+     * @var string
+     */
+    const OID_VALUE = '1.2.840.113549.1.3.1';
+
+    /**
+     * Child OIDs loaded
+     *
+     * @var bool
+     */
+    protected static $childOIDsLoaded = false;
+
+    /**
+     * Break a public or private key down into its constituent components
+     *
+     * @param string $key
+     * @param string $password optional
+     * @return array
+     */
+    public static function load($key, $password = '')
+    {
+        $key = parent::load($key, $password);
+
+        $type = isset($key['privateKey']) ? 'privateKey' : 'publicKey';
+
+        $decoded = ASN1::decodeBER($key[$type . 'Algorithm']['parameters']->element);
+        if (empty($decoded)) {
+            throw new \RuntimeException('Unable to decode BER of parameters');
+        }
+        $components = ASN1::asn1map($decoded[0], Maps\DHParameter::MAP);
+        if (!is_array($components)) {
+            throw new \RuntimeException('Unable to perform ASN1 mapping on parameters');
+        }
+
+        $decoded = ASN1::decodeBER($key[$type]);
+        switch (true) {
+            case !isset($decoded):
+            case !isset($decoded[0]['content']):
+            case !$decoded[0]['content'] instanceof BigInteger:
+                throw new \RuntimeException('Unable to decode BER of parameters');
+        }
+        $components[$type] = $decoded[0]['content'];
+
+        return $components;
+    }
+
+    /**
+     * Convert a private key to the appropriate format.
+     *
+     * @param \phpseclib3\Math\BigInteger $prime
+     * @param \phpseclib3\Math\BigInteger $base
+     * @param \phpseclib3\Math\BigInteger $privateKey
+     * @param \phpseclib3\Math\BigInteger $publicKey
+     * @param string $password optional
+     * @param array $options optional
+     * @return string
+     */
+    public static function savePrivateKey(BigInteger $prime, BigInteger $base, BigInteger $privateKey, BigInteger $publicKey, $password = '', array $options = [])
+    {
+        $params = [
+            'prime' => $prime,
+            'base' => $base
+        ];
+        $params = ASN1::encodeDER($params, Maps\DHParameter::MAP);
+        $params = new ASN1\Element($params);
+        $key = ASN1::encodeDER($privateKey, ['type' => ASN1::TYPE_INTEGER]);
+        return self::wrapPrivateKey($key, [], $params, $password, null, '', $options);
+    }
+
+    /**
+     * Convert a public key to the appropriate format
+     *
+     * @param \phpseclib3\Math\BigInteger $prime
+     * @param \phpseclib3\Math\BigInteger $base
+     * @param \phpseclib3\Math\BigInteger $publicKey
+     * @param array $options optional
+     * @return string
+     */
+    public static function savePublicKey(BigInteger $prime, BigInteger $base, BigInteger $publicKey, array $options = [])
+    {
+        $params = [
+            'prime' => $prime,
+            'base' => $base
+        ];
+        $params = ASN1::encodeDER($params, Maps\DHParameter::MAP);
+        $params = new ASN1\Element($params);
+        $key = ASN1::encodeDER($publicKey, ['type' => ASN1::TYPE_INTEGER]);
+        return self::wrapPublicKey($key, $params);
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/DH/Parameters.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/DH/Parameters.php
new file mode 100644
index 0000000..c0ded84
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/DH/Parameters.php
@@ -0,0 +1,36 @@
+<?php
+
+/**
+ * DH Parameters
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\DH;
+
+use phpseclib3\Crypt\DH;
+
+/**
+ * DH Parameters
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+final class Parameters extends DH
+{
+    /**
+     * Returns the parameters
+     *
+     * @param string $type
+     * @param array $options optional
+     * @return string
+     */
+    public function toString($type = 'PKCS1', array $options = [])
+    {
+        $type = self::validatePlugin('Keys', 'PKCS1', 'saveParameters');
+
+        return $type::saveParameters($this->prime, $this->base, $options);
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/DH/PrivateKey.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/DH/PrivateKey.php
new file mode 100644
index 0000000..737781f
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/DH/PrivateKey.php
@@ -0,0 +1,75 @@
+<?php
+
+/**
+ * DH Private Key
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\DH;
+
+use phpseclib3\Crypt\Common;
+use phpseclib3\Crypt\DH;
+
+/**
+ * DH Private Key
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+final class PrivateKey extends DH
+{
+    use Common\Traits\PasswordProtected;
+
+    /**
+     * Private Key
+     *
+     * @var \phpseclib3\Math\BigInteger
+     */
+    protected $privateKey;
+
+    /**
+     * Public Key
+     *
+     * @var \phpseclib3\Math\BigInteger
+     */
+    protected $publicKey;
+
+    /**
+     * Returns the public key
+     *
+     * @return DH\PublicKey
+     */
+    public function getPublicKey()
+    {
+        $type = self::validatePlugin('Keys', 'PKCS8', 'savePublicKey');
+
+        if (!isset($this->publicKey)) {
+            $this->publicKey = $this->base->powMod($this->privateKey, $this->prime);
+        }
+
+        $key = $type::savePublicKey($this->prime, $this->base, $this->publicKey);
+
+        return DH::loadFormat('PKCS8', $key);
+    }
+
+    /**
+     * Returns the private key
+     *
+     * @param string $type
+     * @param array $options optional
+     * @return string
+     */
+    public function toString($type, array $options = [])
+    {
+        $type = self::validatePlugin('Keys', $type, 'savePrivateKey');
+
+        if (!isset($this->publicKey)) {
+            $this->publicKey = $this->base->powMod($this->privateKey, $this->prime);
+        }
+
+        return $type::savePrivateKey($this->prime, $this->base, $this->privateKey, $this->publicKey, $this->password, $options);
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/DH/PublicKey.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/DH/PublicKey.php
new file mode 100644
index 0000000..87726a5
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/DH/PublicKey.php
@@ -0,0 +1,49 @@
+<?php
+
+/**
+ * DH Public Key
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\DH;
+
+use phpseclib3\Crypt\Common;
+use phpseclib3\Crypt\DH;
+
+/**
+ * DH Public Key
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+final class PublicKey extends DH
+{
+    use Common\Traits\Fingerprint;
+
+    /**
+     * Returns the public key
+     *
+     * @param string $type
+     * @param array $options optional
+     * @return string
+     */
+    public function toString($type, array $options = [])
+    {
+        $type = self::validatePlugin('Keys', $type, 'savePublicKey');
+
+        return $type::savePublicKey($this->prime, $this->base, $this->publicKey, $options);
+    }
+
+    /**
+     * Returns the public key as a BigInteger
+     *
+     * @return \phpseclib3\Math\BigInteger
+     */
+    public function toBigInteger()
+    {
+        return $this->publicKey;
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/DSA.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/DSA.php
new file mode 100644
index 0000000..0123c66
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/DSA.php
@@ -0,0 +1,337 @@
+<?php
+
+/**
+ * Pure-PHP FIPS 186-4 compliant implementation of DSA.
+ *
+ * PHP version 5
+ *
+ * Here's an example of how to create signatures and verify signatures with this library:
+ * <code>
+ * <?php
+ * include 'vendor/autoload.php';
+ *
+ * $private = \phpseclib3\Crypt\DSA::createKey();
+ * $public = $private->getPublicKey();
+ *
+ * $plaintext = 'terrafrost';
+ *
+ * $signature = $private->sign($plaintext);
+ *
+ * echo $public->verify($plaintext, $signature) ? 'verified' : 'unverified';
+ * ?>
+ * </code>
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt;
+
+use phpseclib3\Crypt\Common\AsymmetricKey;
+use phpseclib3\Crypt\DSA\Parameters;
+use phpseclib3\Crypt\DSA\PrivateKey;
+use phpseclib3\Crypt\DSA\PublicKey;
+use phpseclib3\Exception\InsufficientSetupException;
+use phpseclib3\Math\BigInteger;
+
+/**
+ * Pure-PHP FIPS 186-4 compliant implementation of DSA.
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class DSA extends AsymmetricKey
+{
+    /**
+     * Algorithm Name
+     *
+     * @var string
+     */
+    const ALGORITHM = 'DSA';
+
+    /**
+     * DSA Prime P
+     *
+     * @var \phpseclib3\Math\BigInteger
+     */
+    protected $p;
+
+    /**
+     * DSA Group Order q
+     *
+     * Prime divisor of p-1
+     *
+     * @var \phpseclib3\Math\BigInteger
+     */
+    protected $q;
+
+    /**
+     * DSA Group Generator G
+     *
+     * @var \phpseclib3\Math\BigInteger
+     */
+    protected $g;
+
+    /**
+     * DSA public key value y
+     *
+     * @var \phpseclib3\Math\BigInteger
+     */
+    protected $y;
+
+    /**
+     * Signature Format
+     *
+     * @var string
+     */
+    protected $sigFormat;
+
+    /**
+     * Signature Format (Short)
+     *
+     * @var string
+     */
+    protected $shortFormat;
+
+    /**
+     * Create DSA parameters
+     *
+     * @param int $L
+     * @param int $N
+     * @return \phpseclib3\Crypt\DSA|bool
+     */
+    public static function createParameters($L = 2048, $N = 224)
+    {
+        self::initialize_static_variables();
+
+        $class = new \ReflectionClass(static::class);
+        if ($class->isFinal()) {
+            throw new \RuntimeException('createParameters() should not be called from final classes (' . static::class . ')');
+        }
+
+        if (!isset(self::$engines['PHP'])) {
+            self::useBestEngine();
+        }
+
+        switch (true) {
+            case $N == 160:
+            /*
+              in FIPS 186-1 and 186-2 N was fixed at 160 whereas K had an upper bound of 1024.
+              RFC 4253 (SSH Transport Layer Protocol) references FIPS 186-2 and as such most
+              SSH DSA implementations only support keys with an N of 160.
+              puttygen let's you set the size of L (but not the size of N) and uses 2048 as the
+              default L value. that's not really compliant with any of the FIPS standards, however,
+              for the purposes of maintaining compatibility with puttygen, we'll support it
+            */
+            //case ($L >= 512 || $L <= 1024) && (($L & 0x3F) == 0) && $N == 160:
+            // FIPS 186-3 changed this as follows:
+            //case $L == 1024 && $N == 160:
+            case $L == 2048 && $N == 224:
+            case $L == 2048 && $N == 256:
+            case $L == 3072 && $N == 256:
+                break;
+            default:
+                throw new \InvalidArgumentException('Invalid values for N and L');
+        }
+
+        $two = new BigInteger(2);
+
+        $q = BigInteger::randomPrime($N);
+        $divisor = $q->multiply($two);
+
+        do {
+            $x = BigInteger::random($L);
+            list(, $c) = $x->divide($divisor);
+            $p = $x->subtract($c->subtract(self::$one));
+        } while ($p->getLength() != $L || !$p->isPrime());
+
+        $p_1 = $p->subtract(self::$one);
+        list($e) = $p_1->divide($q);
+
+        // quoting http://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.186-4.pdf#page=50 ,
+        // "h could be obtained from a random number generator or from a counter that
+        //  changes after each use". PuTTY (sshdssg.c) starts h off at 1 and increments
+        // it on each loop. wikipedia says "commonly h = 2 is used" so we'll just do that
+        $h = clone $two;
+        while (true) {
+            $g = $h->powMod($e, $p);
+            if (!$g->equals(self::$one)) {
+                break;
+            }
+            $h = $h->add(self::$one);
+        }
+
+        $dsa = new Parameters();
+        $dsa->p = $p;
+        $dsa->q = $q;
+        $dsa->g = $g;
+
+        return $dsa;
+    }
+
+    /**
+     * Create public / private key pair.
+     *
+     * This method is a bit polymorphic. It can take a DSA/Parameters object, L / N as two distinct parameters or
+     * no parameters (at which point L and N will be generated with this method)
+     *
+     * Returns the private key, from which the publickey can be extracted
+     *
+     * @param int[] ...$args
+     * @return DSA\PrivateKey
+     */
+    public static function createKey(...$args)
+    {
+        self::initialize_static_variables();
+
+        $class = new \ReflectionClass(static::class);
+        if ($class->isFinal()) {
+            throw new \RuntimeException('createKey() should not be called from final classes (' . static::class . ')');
+        }
+
+        if (!isset(self::$engines['PHP'])) {
+            self::useBestEngine();
+        }
+
+        if (count($args) == 2 && is_int($args[0]) && is_int($args[1])) {
+            $params = self::createParameters($args[0], $args[1]);
+        } elseif (count($args) == 1 && $args[0] instanceof Parameters) {
+            $params = $args[0];
+        } elseif (!count($args)) {
+            $params = self::createParameters();
+        } else {
+            throw new InsufficientSetupException('Valid parameters are either two integers (L and N), a single DSA object or no parameters at all.');
+        }
+
+        $private = new PrivateKey();
+        $private->p = $params->p;
+        $private->q = $params->q;
+        $private->g = $params->g;
+
+        $private->x = BigInteger::randomRange(self::$one, $private->q->subtract(self::$one));
+        $private->y = $private->g->powMod($private->x, $private->p);
+
+        //$public = clone $private;
+        //unset($public->x);
+
+        return $private
+            ->withHash($params->hash->getHash())
+            ->withSignatureFormat($params->shortFormat);
+    }
+
+    /**
+     * OnLoad Handler
+     *
+     * @return bool
+     */
+    protected static function onLoad(array $components)
+    {
+        if (!isset(self::$engines['PHP'])) {
+            self::useBestEngine();
+        }
+
+        if (!isset($components['x']) && !isset($components['y'])) {
+            $new = new Parameters();
+        } elseif (isset($components['x'])) {
+            $new = new PrivateKey();
+            $new->x = $components['x'];
+        } else {
+            $new = new PublicKey();
+        }
+
+        $new->p = $components['p'];
+        $new->q = $components['q'];
+        $new->g = $components['g'];
+
+        if (isset($components['y'])) {
+            $new->y = $components['y'];
+        }
+
+        return $new;
+    }
+
+    /**
+     * Constructor
+     *
+     * PublicKey and PrivateKey objects can only be created from abstract RSA class
+     */
+    protected function __construct()
+    {
+        $this->sigFormat = self::validatePlugin('Signature', 'ASN1');
+        $this->shortFormat = 'ASN1';
+
+        parent::__construct();
+    }
+
+    /**
+     * Returns the key size
+     *
+     * More specifically, this L (the length of DSA Prime P) and N (the length of DSA Group Order q)
+     *
+     * @return array
+     */
+    public function getLength()
+    {
+        return ['L' => $this->p->getLength(), 'N' => $this->q->getLength()];
+    }
+
+    /**
+     * Returns the current engine being used
+     *
+     * @see self::useInternalEngine()
+     * @see self::useBestEngine()
+     * @return string
+     */
+    public function getEngine()
+    {
+        if (!isset(self::$engines['PHP'])) {
+            self::useBestEngine();
+        }
+        return self::$engines['OpenSSL'] && in_array($this->hash->getHash(), openssl_get_md_methods()) ?
+            'OpenSSL' : 'PHP';
+    }
+
+    /**
+     * Returns the parameters
+     *
+     * A public / private key is only returned if the currently loaded "key" contains an x or y
+     * value.
+     *
+     * @see self::getPublicKey()
+     * @return mixed
+     */
+    public function getParameters()
+    {
+        $type = self::validatePlugin('Keys', 'PKCS1', 'saveParameters');
+
+        $key = $type::saveParameters($this->p, $this->q, $this->g);
+        return DSA::load($key, 'PKCS1')
+            ->withHash($this->hash->getHash())
+            ->withSignatureFormat($this->shortFormat);
+    }
+
+    /**
+     * Determines the signature padding mode
+     *
+     * Valid values are: ASN1, SSH2, Raw
+     *
+     * @param string $format
+     */
+    public function withSignatureFormat($format)
+    {
+        $new = clone $this;
+        $new->shortFormat = $format;
+        $new->sigFormat = self::validatePlugin('Signature', $format);
+        return $new;
+    }
+
+    /**
+     * Returns the signature format currently being used
+     *
+     */
+    public function getSignatureFormat()
+    {
+        return $this->shortFormat;
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/DSA/Formats/Keys/OpenSSH.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/DSA/Formats/Keys/OpenSSH.php
new file mode 100644
index 0000000..cc204fa
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/DSA/Formats/Keys/OpenSSH.php
@@ -0,0 +1,118 @@
+<?php
+
+/**
+ * OpenSSH Formatted DSA Key Handler
+ *
+ * PHP version 5
+ *
+ * Place in $HOME/.ssh/authorized_keys
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\DSA\Formats\Keys;
+
+use phpseclib3\Common\Functions\Strings;
+use phpseclib3\Crypt\Common\Formats\Keys\OpenSSH as Progenitor;
+use phpseclib3\Math\BigInteger;
+
+/**
+ * OpenSSH Formatted DSA Key Handler
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class OpenSSH extends Progenitor
+{
+    /**
+     * Supported Key Types
+     *
+     * @var array
+     */
+    protected static $types = ['ssh-dss'];
+
+    /**
+     * Break a public or private key down into its constituent components
+     *
+     * @param string $key
+     * @param string $password optional
+     * @return array
+     */
+    public static function load($key, $password = '')
+    {
+        $parsed = parent::load($key, $password);
+
+        if (isset($parsed['paddedKey'])) {
+            list($type) = Strings::unpackSSH2('s', $parsed['paddedKey']);
+            if ($type != $parsed['type']) {
+                throw new \RuntimeException("The public and private keys are not of the same type ($type vs $parsed[type])");
+            }
+
+            list($p, $q, $g, $y, $x, $comment) = Strings::unpackSSH2('i5s', $parsed['paddedKey']);
+
+            return compact('p', 'q', 'g', 'y', 'x', 'comment');
+        }
+
+        list($p, $q, $g, $y) = Strings::unpackSSH2('iiii', $parsed['publicKey']);
+
+        $comment = $parsed['comment'];
+
+        return compact('p', 'q', 'g', 'y', 'comment');
+    }
+
+    /**
+     * Convert a public key to the appropriate format
+     *
+     * @param \phpseclib3\Math\BigInteger $p
+     * @param \phpseclib3\Math\BigInteger $q
+     * @param \phpseclib3\Math\BigInteger $g
+     * @param \phpseclib3\Math\BigInteger $y
+     * @param array $options optional
+     * @return string
+     */
+    public static function savePublicKey(BigInteger $p, BigInteger $q, BigInteger $g, BigInteger $y, array $options = [])
+    {
+        if ($q->getLength() != 160) {
+            throw new \InvalidArgumentException('SSH only supports keys with an N (length of Group Order q) of 160');
+        }
+
+        // from <http://tools.ietf.org/html/rfc4253#page-15>:
+        // string    "ssh-dss"
+        // mpint     p
+        // mpint     q
+        // mpint     g
+        // mpint     y
+        $DSAPublicKey = Strings::packSSH2('siiii', 'ssh-dss', $p, $q, $g, $y);
+
+        if (isset($options['binary']) ? $options['binary'] : self::$binary) {
+            return $DSAPublicKey;
+        }
+
+        $comment = isset($options['comment']) ? $options['comment'] : self::$comment;
+        $DSAPublicKey = 'ssh-dss ' . base64_encode($DSAPublicKey) . ' ' . $comment;
+
+        return $DSAPublicKey;
+    }
+
+    /**
+     * Convert a private key to the appropriate format.
+     *
+     * @param \phpseclib3\Math\BigInteger $p
+     * @param \phpseclib3\Math\BigInteger $q
+     * @param \phpseclib3\Math\BigInteger $g
+     * @param \phpseclib3\Math\BigInteger $y
+     * @param \phpseclib3\Math\BigInteger $x
+     * @param string $password optional
+     * @param array $options optional
+     * @return string
+     */
+    public static function savePrivateKey(BigInteger $p, BigInteger $q, BigInteger $g, BigInteger $y, BigInteger $x, $password = '', array $options = [])
+    {
+        $publicKey = self::savePublicKey($p, $q, $g, $y, ['binary' => true]);
+        $privateKey = Strings::packSSH2('si5', 'ssh-dss', $p, $q, $g, $y, $x);
+
+        return self::wrapPrivateKey($publicKey, $privateKey, $password, $options);
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/DSA/Formats/Keys/PKCS1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/DSA/Formats/Keys/PKCS1.php
new file mode 100644
index 0000000..52a0499
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/DSA/Formats/Keys/PKCS1.php
@@ -0,0 +1,143 @@
+<?php
+
+/**
+ * PKCS#1 Formatted DSA Key Handler
+ *
+ * PHP version 5
+ *
+ * Used by File/X509.php
+ *
+ * Processes keys with the following headers:
+ *
+ * -----BEGIN DSA PRIVATE KEY-----
+ * -----BEGIN DSA PUBLIC KEY-----
+ * -----BEGIN DSA PARAMETERS-----
+ *
+ * Analogous to ssh-keygen's pem format (as specified by -m)
+ *
+ * Also, technically, PKCS1 decribes RSA but I am not aware of a formal specification for DSA.
+ * The DSA private key format seems to have been adapted from the RSA private key format so
+ * we're just re-using that as the name.
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\DSA\Formats\Keys;
+
+use phpseclib3\Common\Functions\Strings;
+use phpseclib3\Crypt\Common\Formats\Keys\PKCS1 as Progenitor;
+use phpseclib3\File\ASN1;
+use phpseclib3\File\ASN1\Maps;
+use phpseclib3\Math\BigInteger;
+
+/**
+ * PKCS#1 Formatted DSA Key Handler
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class PKCS1 extends Progenitor
+{
+    /**
+     * Break a public or private key down into its constituent components
+     *
+     * @param string $key
+     * @param string $password optional
+     * @return array
+     */
+    public static function load($key, $password = '')
+    {
+        $key = parent::load($key, $password);
+
+        $decoded = ASN1::decodeBER($key);
+        if (!$decoded) {
+            throw new \RuntimeException('Unable to decode BER');
+        }
+
+        $key = ASN1::asn1map($decoded[0], Maps\DSAParams::MAP);
+        if (is_array($key)) {
+            return $key;
+        }
+
+        $key = ASN1::asn1map($decoded[0], Maps\DSAPrivateKey::MAP);
+        if (is_array($key)) {
+            return $key;
+        }
+
+        $key = ASN1::asn1map($decoded[0], Maps\DSAPublicKey::MAP);
+        if (is_array($key)) {
+            return $key;
+        }
+
+        throw new \RuntimeException('Unable to perform ASN1 mapping');
+    }
+
+    /**
+     * Convert DSA parameters to the appropriate format
+     *
+     * @param \phpseclib3\Math\BigInteger $p
+     * @param \phpseclib3\Math\BigInteger $q
+     * @param \phpseclib3\Math\BigInteger $g
+     * @return string
+     */
+    public static function saveParameters(BigInteger $p, BigInteger $q, BigInteger $g)
+    {
+        $key = [
+            'p' => $p,
+            'q' => $q,
+            'g' => $g
+        ];
+
+        $key = ASN1::encodeDER($key, Maps\DSAParams::MAP);
+
+        return "-----BEGIN DSA PARAMETERS-----\r\n" .
+               chunk_split(Strings::base64_encode($key), 64) .
+               "-----END DSA PARAMETERS-----\r\n";
+    }
+
+    /**
+     * Convert a private key to the appropriate format.
+     *
+     * @param \phpseclib3\Math\BigInteger $p
+     * @param \phpseclib3\Math\BigInteger $q
+     * @param \phpseclib3\Math\BigInteger $g
+     * @param \phpseclib3\Math\BigInteger $y
+     * @param \phpseclib3\Math\BigInteger $x
+     * @param string $password optional
+     * @param array $options optional
+     * @return string
+     */
+    public static function savePrivateKey(BigInteger $p, BigInteger $q, BigInteger $g, BigInteger $y, BigInteger $x, $password = '', array $options = [])
+    {
+        $key = [
+            'version' => 0,
+            'p' => $p,
+            'q' => $q,
+            'g' => $g,
+            'y' => $y,
+            'x' => $x
+        ];
+
+        $key = ASN1::encodeDER($key, Maps\DSAPrivateKey::MAP);
+
+        return self::wrapPrivateKey($key, 'DSA', $password, $options);
+    }
+
+    /**
+     * Convert a public key to the appropriate format
+     *
+     * @param \phpseclib3\Math\BigInteger $p
+     * @param \phpseclib3\Math\BigInteger $q
+     * @param \phpseclib3\Math\BigInteger $g
+     * @param \phpseclib3\Math\BigInteger $y
+     * @return string
+     */
+    public static function savePublicKey(BigInteger $p, BigInteger $q, BigInteger $g, BigInteger $y)
+    {
+        $key = ASN1::encodeDER($y, Maps\DSAPublicKey::MAP);
+
+        return self::wrapPublicKey($key, 'DSA');
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/DSA/Formats/Keys/PKCS8.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/DSA/Formats/Keys/PKCS8.php
new file mode 100644
index 0000000..004881e
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/DSA/Formats/Keys/PKCS8.php
@@ -0,0 +1,146 @@
+<?php
+
+/**
+ * PKCS#8 Formatted DSA Key Handler
+ *
+ * PHP version 5
+ *
+ * Processes keys with the following headers:
+ *
+ * -----BEGIN ENCRYPTED PRIVATE KEY-----
+ * -----BEGIN PRIVATE KEY-----
+ * -----BEGIN PUBLIC KEY-----
+ *
+ * Analogous to ssh-keygen's pkcs8 format (as specified by -m). Although PKCS8
+ * is specific to private keys it's basically creating a DER-encoded wrapper
+ * for keys. This just extends that same concept to public keys (much like ssh-keygen)
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\DSA\Formats\Keys;
+
+use phpseclib3\Crypt\Common\Formats\Keys\PKCS8 as Progenitor;
+use phpseclib3\File\ASN1;
+use phpseclib3\File\ASN1\Maps;
+use phpseclib3\Math\BigInteger;
+
+/**
+ * PKCS#8 Formatted DSA Key Handler
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class PKCS8 extends Progenitor
+{
+    /**
+     * OID Name
+     *
+     * @var string
+     */
+    const OID_NAME = 'id-dsa';
+
+    /**
+     * OID Value
+     *
+     * @var string
+     */
+    const OID_VALUE = '1.2.840.10040.4.1';
+
+    /**
+     * Child OIDs loaded
+     *
+     * @var bool
+     */
+    protected static $childOIDsLoaded = false;
+
+    /**
+     * Break a public or private key down into its constituent components
+     *
+     * @param string $key
+     * @param string $password optional
+     * @return array
+     */
+    public static function load($key, $password = '')
+    {
+        $key = parent::load($key, $password);
+
+        $type = isset($key['privateKey']) ? 'privateKey' : 'publicKey';
+
+        $decoded = ASN1::decodeBER($key[$type . 'Algorithm']['parameters']->element);
+        if (!$decoded) {
+            throw new \RuntimeException('Unable to decode BER of parameters');
+        }
+        $components = ASN1::asn1map($decoded[0], Maps\DSAParams::MAP);
+        if (!is_array($components)) {
+            throw new \RuntimeException('Unable to perform ASN1 mapping on parameters');
+        }
+
+        $decoded = ASN1::decodeBER($key[$type]);
+        if (empty($decoded)) {
+            throw new \RuntimeException('Unable to decode BER');
+        }
+
+        $var = $type == 'privateKey' ? 'x' : 'y';
+        $components[$var] = ASN1::asn1map($decoded[0], Maps\DSAPublicKey::MAP);
+        if (!$components[$var] instanceof BigInteger) {
+            throw new \RuntimeException('Unable to perform ASN1 mapping');
+        }
+
+        if (isset($key['meta'])) {
+            $components['meta'] = $key['meta'];
+        }
+
+        return $components;
+    }
+
+    /**
+     * Convert a private key to the appropriate format.
+     *
+     * @param \phpseclib3\Math\BigInteger $p
+     * @param \phpseclib3\Math\BigInteger $q
+     * @param \phpseclib3\Math\BigInteger $g
+     * @param \phpseclib3\Math\BigInteger $y
+     * @param \phpseclib3\Math\BigInteger $x
+     * @param string $password optional
+     * @param array $options optional
+     * @return string
+     */
+    public static function savePrivateKey(BigInteger $p, BigInteger $q, BigInteger $g, BigInteger $y, BigInteger $x, $password = '', array $options = [])
+    {
+        $params = [
+            'p' => $p,
+            'q' => $q,
+            'g' => $g
+        ];
+        $params = ASN1::encodeDER($params, Maps\DSAParams::MAP);
+        $params = new ASN1\Element($params);
+        $key = ASN1::encodeDER($x, Maps\DSAPublicKey::MAP);
+        return self::wrapPrivateKey($key, [], $params, $password, null, '', $options);
+    }
+
+    /**
+     * Convert a public key to the appropriate format
+     *
+     * @param \phpseclib3\Math\BigInteger $p
+     * @param \phpseclib3\Math\BigInteger $q
+     * @param \phpseclib3\Math\BigInteger $g
+     * @param \phpseclib3\Math\BigInteger $y
+     * @param array $options optional
+     * @return string
+     */
+    public static function savePublicKey(BigInteger $p, BigInteger $q, BigInteger $g, BigInteger $y, array $options = [])
+    {
+        $params = [
+            'p' => $p,
+            'q' => $q,
+            'g' => $g
+        ];
+        $params = ASN1::encodeDER($params, Maps\DSAParams::MAP);
+        $params = new ASN1\Element($params);
+        $key = ASN1::encodeDER($y, Maps\DSAPublicKey::MAP);
+        return self::wrapPublicKey($key, $params);
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/DSA/Formats/Keys/PuTTY.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/DSA/Formats/Keys/PuTTY.php
new file mode 100644
index 0000000..177bfdd
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/DSA/Formats/Keys/PuTTY.php
@@ -0,0 +1,109 @@
+<?php
+
+/**
+ * PuTTY Formatted DSA Key Handler
+ *
+ * puttygen does not generate DSA keys with an N of anything other than 160, however,
+ * it can still load them and convert them. PuTTY will load them, too, but SSH servers
+ * won't accept them. Since PuTTY formatted keys are primarily used with SSH this makes
+ * keys with N > 160 kinda useless, hence this handlers not supporting such keys.
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\DSA\Formats\Keys;
+
+use phpseclib3\Common\Functions\Strings;
+use phpseclib3\Crypt\Common\Formats\Keys\PuTTY as Progenitor;
+use phpseclib3\Math\BigInteger;
+
+/**
+ * PuTTY Formatted DSA Key Handler
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class PuTTY extends Progenitor
+{
+    /**
+     * Public Handler
+     *
+     * @var string
+     */
+    const PUBLIC_HANDLER = 'phpseclib3\Crypt\DSA\Formats\Keys\OpenSSH';
+
+    /**
+     * Algorithm Identifier
+     *
+     * @var array
+     */
+    protected static $types = ['ssh-dss'];
+
+    /**
+     * Break a public or private key down into its constituent components
+     *
+     * @param string $key
+     * @param string $password optional
+     * @return array
+     */
+    public static function load($key, $password = '')
+    {
+        $components = parent::load($key, $password);
+        if (!isset($components['private'])) {
+            return $components;
+        }
+        extract($components);
+        unset($components['public'], $components['private']);
+
+        list($p, $q, $g, $y) = Strings::unpackSSH2('iiii', $public);
+        list($x) = Strings::unpackSSH2('i', $private);
+
+        return compact('p', 'q', 'g', 'y', 'x', 'comment');
+    }
+
+    /**
+     * Convert a private key to the appropriate format.
+     *
+     * @param \phpseclib3\Math\BigInteger $p
+     * @param \phpseclib3\Math\BigInteger $q
+     * @param \phpseclib3\Math\BigInteger $g
+     * @param \phpseclib3\Math\BigInteger $y
+     * @param \phpseclib3\Math\BigInteger $x
+     * @param string $password optional
+     * @param array $options optional
+     * @return string
+     */
+    public static function savePrivateKey(BigInteger $p, BigInteger $q, BigInteger $g, BigInteger $y, BigInteger $x, $password = false, array $options = [])
+    {
+        if ($q->getLength() != 160) {
+            throw new \InvalidArgumentException('SSH only supports keys with an N (length of Group Order q) of 160');
+        }
+
+        $public = Strings::packSSH2('iiii', $p, $q, $g, $y);
+        $private = Strings::packSSH2('i', $x);
+
+        return self::wrapPrivateKey($public, $private, 'ssh-dss', $password, $options);
+    }
+
+    /**
+     * Convert a public key to the appropriate format
+     *
+     * @param \phpseclib3\Math\BigInteger $p
+     * @param \phpseclib3\Math\BigInteger $q
+     * @param \phpseclib3\Math\BigInteger $g
+     * @param \phpseclib3\Math\BigInteger $y
+     * @return string
+     */
+    public static function savePublicKey(BigInteger $p, BigInteger $q, BigInteger $g, BigInteger $y)
+    {
+        if ($q->getLength() != 160) {
+            throw new \InvalidArgumentException('SSH only supports keys with an N (length of Group Order q) of 160');
+        }
+
+        return self::wrapPublicKey(Strings::packSSH2('iiii', $p, $q, $g, $y), 'ssh-dss');
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/DSA/Formats/Keys/Raw.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/DSA/Formats/Keys/Raw.php
new file mode 100644
index 0000000..201aa6f
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/DSA/Formats/Keys/Raw.php
@@ -0,0 +1,85 @@
+<?php
+
+/**
+ * Raw DSA Key Handler
+ *
+ * PHP version 5
+ *
+ * Reads and creates arrays as DSA keys
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\DSA\Formats\Keys;
+
+use phpseclib3\Math\BigInteger;
+
+/**
+ * Raw DSA Key Handler
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class Raw
+{
+    /**
+     * Break a public or private key down into its constituent components
+     *
+     * @param array $key
+     * @param string $password optional
+     * @return array
+     */
+    public static function load($key, $password = '')
+    {
+        if (!is_array($key)) {
+            throw new \UnexpectedValueException('Key should be a array - not a ' . gettype($key));
+        }
+
+        switch (true) {
+            case !isset($key['p']) || !isset($key['q']) || !isset($key['g']):
+            case !$key['p'] instanceof BigInteger:
+            case !$key['q'] instanceof BigInteger:
+            case !$key['g'] instanceof BigInteger:
+            case !isset($key['x']) && !isset($key['y']):
+            case isset($key['x']) && !$key['x'] instanceof BigInteger:
+            case isset($key['y']) && !$key['y'] instanceof BigInteger:
+                throw new \UnexpectedValueException('Key appears to be malformed');
+        }
+
+        $options = ['p' => 1, 'q' => 1, 'g' => 1, 'x' => 1, 'y' => 1];
+
+        return array_intersect_key($key, $options);
+    }
+
+    /**
+     * Convert a private key to the appropriate format.
+     *
+     * @param \phpseclib3\Math\BigInteger $p
+     * @param \phpseclib3\Math\BigInteger $q
+     * @param \phpseclib3\Math\BigInteger $g
+     * @param \phpseclib3\Math\BigInteger $y
+     * @param \phpseclib3\Math\BigInteger $x
+     * @param string $password optional
+     * @return string
+     */
+    public static function savePrivateKey(BigInteger $p, BigInteger $q, BigInteger $g, BigInteger $y, BigInteger $x, $password = '')
+    {
+        return compact('p', 'q', 'g', 'y', 'x');
+    }
+
+    /**
+     * Convert a public key to the appropriate format
+     *
+     * @param \phpseclib3\Math\BigInteger $p
+     * @param \phpseclib3\Math\BigInteger $q
+     * @param \phpseclib3\Math\BigInteger $g
+     * @param \phpseclib3\Math\BigInteger $y
+     * @return string
+     */
+    public static function savePublicKey(BigInteger $p, BigInteger $q, BigInteger $g, BigInteger $y)
+    {
+        return compact('p', 'q', 'g', 'y');
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/DSA/Formats/Keys/XML.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/DSA/Formats/Keys/XML.php
new file mode 100644
index 0000000..fc36367
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/DSA/Formats/Keys/XML.php
@@ -0,0 +1,132 @@
+<?php
+
+/**
+ * XML Formatted DSA Key Handler
+ *
+ * While XKMS defines a private key format for RSA it does not do so for DSA. Quoting that standard:
+ *
+ * "[XKMS] does not specify private key parameters for the DSA signature algorithm since the algorithm only
+ *  supports signature modes and so the application of server generated keys and key recovery is of limited
+ *  value"
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\DSA\Formats\Keys;
+
+use phpseclib3\Common\Functions\Strings;
+use phpseclib3\Exception\BadConfigurationException;
+use phpseclib3\Math\BigInteger;
+
+/**
+ * XML Formatted DSA Key Handler
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class XML
+{
+    /**
+     * Break a public or private key down into its constituent components
+     *
+     * @param string $key
+     * @param string $password optional
+     * @return array
+     */
+    public static function load($key, $password = '')
+    {
+        if (!Strings::is_stringable($key)) {
+            throw new \UnexpectedValueException('Key should be a string - not a ' . gettype($key));
+        }
+
+        if (!class_exists('DOMDocument')) {
+            throw new BadConfigurationException('The dom extension is not setup correctly on this system');
+        }
+
+        $use_errors = libxml_use_internal_errors(true);
+
+        $dom = new \DOMDocument();
+        if (substr($key, 0, 5) != '<?xml') {
+            $key = '<xml>' . $key . '</xml>';
+        }
+        if (!$dom->loadXML($key)) {
+            libxml_use_internal_errors($use_errors);
+            throw new \UnexpectedValueException('Key does not appear to contain XML');
+        }
+        $xpath = new \DOMXPath($dom);
+        $keys = ['p', 'q', 'g', 'y', 'j', 'seed', 'pgencounter'];
+        foreach ($keys as $key) {
+            // $dom->getElementsByTagName($key) is case-sensitive
+            $temp = $xpath->query("//*[translate(local-name(), 'ABCDEFGHIJKLMNOPQRSTUVWXYZ','abcdefghijklmnopqrstuvwxyz')='$key']");
+            if (!$temp->length) {
+                continue;
+            }
+            $value = new BigInteger(Strings::base64_decode($temp->item(0)->nodeValue), 256);
+            switch ($key) {
+                case 'p': // a prime modulus meeting the [DSS] requirements
+                    // Parameters P, Q, and G can be public and common to a group of users. They might be known
+                    // from application context. As such, they are optional but P and Q must either both appear
+                    // or both be absent
+                    $components['p'] = $value;
+                    break;
+                case 'q': // an integer in the range 2**159 < Q < 2**160 which is a prime divisor of P-1
+                    $components['q'] = $value;
+                    break;
+                case 'g': // an integer with certain properties with respect to P and Q
+                    $components['g'] = $value;
+                    break;
+                case 'y': // G**X mod P (where X is part of the private key and not made public)
+                    $components['y'] = $value;
+                    // the remaining options do not do anything
+                case 'j': // (P - 1) / Q
+                    // Parameter J is available for inclusion solely for efficiency as it is calculatable from
+                    // P and Q
+                case 'seed': // a DSA prime generation seed
+                    // Parameters seed and pgenCounter are used in the DSA prime number generation algorithm
+                    // specified in [DSS]. As such, they are optional but must either both be present or both
+                    // be absent
+                case 'pgencounter': // a DSA prime generation counter
+            }
+        }
+
+        libxml_use_internal_errors($use_errors);
+
+        if (!isset($components['y'])) {
+            throw new \UnexpectedValueException('Key is missing y component');
+        }
+
+        switch (true) {
+            case !isset($components['p']):
+            case !isset($components['q']):
+            case !isset($components['g']):
+                return ['y' => $components['y']];
+        }
+
+        return $components;
+    }
+
+    /**
+     * Convert a public key to the appropriate format
+     *
+     * See https://www.w3.org/TR/xmldsig-core/#sec-DSAKeyValue
+     *
+     * @param \phpseclib3\Math\BigInteger $p
+     * @param \phpseclib3\Math\BigInteger $q
+     * @param \phpseclib3\Math\BigInteger $g
+     * @param \phpseclib3\Math\BigInteger $y
+     * @return string
+     */
+    public static function savePublicKey(BigInteger $p, BigInteger $q, BigInteger $g, BigInteger $y)
+    {
+        return "<DSAKeyValue>\r\n" .
+               '  <P>' . Strings::base64_encode($p->toBytes()) . "</P>\r\n" .
+               '  <Q>' . Strings::base64_encode($q->toBytes()) . "</Q>\r\n" .
+               '  <G>' . Strings::base64_encode($g->toBytes()) . "</G>\r\n" .
+               '  <Y>' . Strings::base64_encode($y->toBytes()) . "</Y>\r\n" .
+               '</DSAKeyValue>';
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/DSA/Formats/Signature/ASN1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/DSA/Formats/Signature/ASN1.php
new file mode 100644
index 0000000..df52bee
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/DSA/Formats/Signature/ASN1.php
@@ -0,0 +1,62 @@
+<?php
+
+/**
+ * ASN1 Signature Handler
+ *
+ * PHP version 5
+ *
+ * Handles signatures in the format described in
+ * https://tools.ietf.org/html/rfc3279#section-2.2.2
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\DSA\Formats\Signature;
+
+use phpseclib3\File\ASN1 as Encoder;
+use phpseclib3\File\ASN1\Maps;
+use phpseclib3\Math\BigInteger;
+
+/**
+ * ASN1 Signature Handler
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class ASN1
+{
+    /**
+     * Loads a signature
+     *
+     * @param string $sig
+     * @return array|bool
+     */
+    public static function load($sig)
+    {
+        if (!is_string($sig)) {
+            return false;
+        }
+
+        $decoded = Encoder::decodeBER($sig);
+        if (empty($decoded)) {
+            return false;
+        }
+        $components = Encoder::asn1map($decoded[0], Maps\DssSigValue::MAP);
+
+        return $components;
+    }
+
+    /**
+     * Returns a signature in the appropriate format
+     *
+     * @param \phpseclib3\Math\BigInteger $r
+     * @param \phpseclib3\Math\BigInteger $s
+     * @return string
+     */
+    public static function save(BigInteger $r, BigInteger $s)
+    {
+        return Encoder::encodeDER(compact('r', 's'), Maps\DssSigValue::MAP);
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/DSA/Formats/Signature/Raw.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/DSA/Formats/Signature/Raw.php
new file mode 100644
index 0000000..2657a2a
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/DSA/Formats/Signature/Raw.php
@@ -0,0 +1,25 @@
+<?php
+
+/**
+ * Raw DSA Signature Handler
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\DSA\Formats\Signature;
+
+use phpseclib3\Crypt\Common\Formats\Signature\Raw as Progenitor;
+
+/**
+ * Raw DSA Signature Handler
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class Raw extends Progenitor
+{
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/DSA/Formats/Signature/SSH2.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/DSA/Formats/Signature/SSH2.php
new file mode 100644
index 0000000..dbfceab
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/DSA/Formats/Signature/SSH2.php
@@ -0,0 +1,74 @@
+<?php
+
+/**
+ * SSH2 Signature Handler
+ *
+ * PHP version 5
+ *
+ * Handles signatures in the format used by SSH2
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\DSA\Formats\Signature;
+
+use phpseclib3\Common\Functions\Strings;
+use phpseclib3\Math\BigInteger;
+
+/**
+ * SSH2 Signature Handler
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class SSH2
+{
+    /**
+     * Loads a signature
+     *
+     * @param string $sig
+     * @return mixed
+     */
+    public static function load($sig)
+    {
+        if (!is_string($sig)) {
+            return false;
+        }
+
+        $result = Strings::unpackSSH2('ss', $sig);
+        if ($result === false) {
+            return false;
+        }
+        list($type, $blob) = $result;
+        if ($type != 'ssh-dss' || strlen($blob) != 40) {
+            return false;
+        }
+
+        return [
+            'r' => new BigInteger(substr($blob, 0, 20), 256),
+            's' => new BigInteger(substr($blob, 20), 256)
+        ];
+    }
+
+    /**
+     * Returns a signature in the appropriate format
+     *
+     * @param \phpseclib3\Math\BigInteger $r
+     * @param \phpseclib3\Math\BigInteger $s
+     * @return string
+     */
+    public static function save(BigInteger $r, BigInteger $s)
+    {
+        if ($r->getLength() > 160 || $s->getLength() > 160) {
+            return false;
+        }
+        return Strings::packSSH2(
+            'ss',
+            'ssh-dss',
+            str_pad($r->toBytes(), 20, "\0", STR_PAD_LEFT) .
+            str_pad($s->toBytes(), 20, "\0", STR_PAD_LEFT)
+        );
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/DSA/Parameters.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/DSA/Parameters.php
new file mode 100644
index 0000000..84d16ba
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/DSA/Parameters.php
@@ -0,0 +1,36 @@
+<?php
+
+/**
+ * DSA Parameters
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\DSA;
+
+use phpseclib3\Crypt\DSA;
+
+/**
+ * DSA Parameters
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+final class Parameters extends DSA
+{
+    /**
+     * Returns the parameters
+     *
+     * @param string $type
+     * @param array $options optional
+     * @return string
+     */
+    public function toString($type = 'PKCS1', array $options = [])
+    {
+        $type = self::validatePlugin('Keys', 'PKCS1', 'saveParameters');
+
+        return $type::saveParameters($this->p, $this->q, $this->g, $options);
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/DSA/PrivateKey.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/DSA/PrivateKey.php
new file mode 100644
index 0000000..74d3e69
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/DSA/PrivateKey.php
@@ -0,0 +1,152 @@
+<?php
+
+/**
+ * DSA Private Key
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\DSA;
+
+use phpseclib3\Crypt\Common;
+use phpseclib3\Crypt\DSA;
+use phpseclib3\Crypt\DSA\Formats\Signature\ASN1 as ASN1Signature;
+use phpseclib3\Math\BigInteger;
+
+/**
+ * DSA Private Key
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+final class PrivateKey extends DSA implements Common\PrivateKey
+{
+    use Common\Traits\PasswordProtected;
+
+    /**
+     * DSA secret exponent x
+     *
+     * @var \phpseclib3\Math\BigInteger
+     */
+    protected $x;
+
+    /**
+     * Returns the public key
+     *
+     * If you do "openssl rsa -in private.rsa -pubout -outform PEM" you get a PKCS8 formatted key
+     * that contains a publicKeyAlgorithm AlgorithmIdentifier and a publicKey BIT STRING.
+     * An AlgorithmIdentifier contains an OID and a parameters field. With RSA public keys this
+     * parameters field is NULL. With DSA PKCS8 public keys it is not - it contains the p, q and g
+     * variables. The publicKey BIT STRING contains, simply, the y variable. This can be verified
+     * by getting a DSA PKCS8 public key:
+     *
+     * "openssl dsa -in private.dsa -pubout -outform PEM"
+     *
+     * ie. just swap out rsa with dsa in the rsa command above.
+     *
+     * A PKCS1 public key corresponds to the publicKey portion of the PKCS8 key. In the case of RSA
+     * the publicKey portion /is/ the key. In the case of DSA it is not. You cannot verify a signature
+     * without the parameters and the PKCS1 DSA public key format does not include the parameters.
+     *
+     * @see self::getPrivateKey()
+     * @return mixed
+     */
+    public function getPublicKey()
+    {
+        $type = self::validatePlugin('Keys', 'PKCS8', 'savePublicKey');
+
+        if (!isset($this->y)) {
+            $this->y = $this->g->powMod($this->x, $this->p);
+        }
+
+        $key = $type::savePublicKey($this->p, $this->q, $this->g, $this->y);
+
+        return DSA::loadFormat('PKCS8', $key)
+            ->withHash($this->hash->getHash())
+            ->withSignatureFormat($this->shortFormat);
+    }
+
+    /**
+     * Create a signature
+     *
+     * @see self::verify()
+     * @param string $message
+     * @return mixed
+     */
+    public function sign($message)
+    {
+        $format = $this->sigFormat;
+
+        if (self::$engines['OpenSSL'] && in_array($this->hash->getHash(), openssl_get_md_methods())) {
+            $signature = '';
+            $result = openssl_sign($message, $signature, $this->toString('PKCS8'), $this->hash->getHash());
+
+            if ($result) {
+                if ($this->shortFormat == 'ASN1') {
+                    return $signature;
+                }
+
+                extract(ASN1Signature::load($signature));
+
+                return $format::save($r, $s);
+            }
+        }
+
+        $h = $this->hash->hash($message);
+        $h = $this->bits2int($h);
+
+        while (true) {
+            $k = BigInteger::randomRange(self::$one, $this->q->subtract(self::$one));
+            $r = $this->g->powMod($k, $this->p);
+            list(, $r) = $r->divide($this->q);
+            if ($r->equals(self::$zero)) {
+                continue;
+            }
+            $kinv = $k->modInverse($this->q);
+            $temp = $h->add($this->x->multiply($r));
+            $temp = $kinv->multiply($temp);
+            list(, $s) = $temp->divide($this->q);
+            if (!$s->equals(self::$zero)) {
+                break;
+            }
+        }
+
+        // the following is an RFC6979 compliant implementation of deterministic DSA
+        // it's unused because it's mainly intended for use when a good CSPRNG isn't
+        // available. if phpseclib's CSPRNG isn't good then even key generation is
+        // suspect
+        /*
+        $h1 = $this->hash->hash($message);
+        $k = $this->computek($h1);
+        $r = $this->g->powMod($k, $this->p);
+        list(, $r) = $r->divide($this->q);
+        $kinv = $k->modInverse($this->q);
+        $h1 = $this->bits2int($h1);
+        $temp = $h1->add($this->x->multiply($r));
+        $temp = $kinv->multiply($temp);
+        list(, $s) = $temp->divide($this->q);
+        */
+
+        return $format::save($r, $s);
+    }
+
+    /**
+     * Returns the private key
+     *
+     * @param string $type
+     * @param array $options optional
+     * @return string
+     */
+    public function toString($type, array $options = [])
+    {
+        $type = self::validatePlugin('Keys', $type, 'savePrivateKey');
+
+        if (!isset($this->y)) {
+            $this->y = $this->g->powMod($this->x, $this->p);
+        }
+
+        return $type::savePrivateKey($this->p, $this->q, $this->g, $this->y, $this->x, $this->password, $options);
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/DSA/PublicKey.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/DSA/PublicKey.php
new file mode 100644
index 0000000..c14ffbd
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/DSA/PublicKey.php
@@ -0,0 +1,86 @@
+<?php
+
+/**
+ * DSA Public Key
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\DSA;
+
+use phpseclib3\Crypt\Common;
+use phpseclib3\Crypt\DSA;
+use phpseclib3\Crypt\DSA\Formats\Signature\ASN1 as ASN1Signature;
+
+/**
+ * DSA Public Key
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+final class PublicKey extends DSA implements Common\PublicKey
+{
+    use Common\Traits\Fingerprint;
+
+    /**
+     * Verify a signature
+     *
+     * @see self::verify()
+     * @param string $message
+     * @param string $signature
+     * @return mixed
+     */
+    public function verify($message, $signature)
+    {
+        $format = $this->sigFormat;
+
+        $params = $format::load($signature);
+        if ($params === false || count($params) != 2) {
+            return false;
+        }
+        extract($params);
+
+        if (self::$engines['OpenSSL'] && in_array($this->hash->getHash(), openssl_get_md_methods())) {
+            $sig = $format != 'ASN1' ? ASN1Signature::save($r, $s) : $signature;
+
+            $result = openssl_verify($message, $sig, $this->toString('PKCS8'), $this->hash->getHash());
+
+            if ($result != -1) {
+                return (bool) $result;
+            }
+        }
+
+        $q_1 = $this->q->subtract(self::$one);
+        if (!$r->between(self::$one, $q_1) || !$s->between(self::$one, $q_1)) {
+            return false;
+        }
+
+        $w = $s->modInverse($this->q);
+        $h = $this->hash->hash($message);
+        $h = $this->bits2int($h);
+        list(, $u1) = $h->multiply($w)->divide($this->q);
+        list(, $u2) = $r->multiply($w)->divide($this->q);
+        $v1 = $this->g->powMod($u1, $this->p);
+        $v2 = $this->y->powMod($u2, $this->p);
+        list(, $v) = $v1->multiply($v2)->divide($this->p);
+        list(, $v) = $v->divide($this->q);
+
+        return $v->equals($r);
+    }
+
+    /**
+     * Returns the public key
+     *
+     * @param string $type
+     * @param array $options optional
+     * @return string
+     */
+    public function toString($type, array $options = [])
+    {
+        $type = self::validatePlugin('Keys', $type, 'savePublicKey');
+
+        return $type::savePublicKey($this->p, $this->q, $this->g, $this->y, $options);
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC.php
new file mode 100644
index 0000000..10b3825
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC.php
@@ -0,0 +1,480 @@
+<?php
+
+/**
+ * Pure-PHP implementation of EC.
+ *
+ * PHP version 5
+ *
+ * Here's an example of how to create signatures and verify signatures with this library:
+ * <code>
+ * <?php
+ * include 'vendor/autoload.php';
+ *
+ * $private = \phpseclib3\Crypt\EC::createKey('secp256k1');
+ * $public = $private->getPublicKey();
+ *
+ * $plaintext = 'terrafrost';
+ *
+ * $signature = $private->sign($plaintext);
+ *
+ * echo $public->verify($plaintext, $signature) ? 'verified' : 'unverified';
+ * ?>
+ * </code>
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt;
+
+use phpseclib3\Crypt\Common\AsymmetricKey;
+use phpseclib3\Crypt\EC\BaseCurves\Montgomery as MontgomeryCurve;
+use phpseclib3\Crypt\EC\BaseCurves\TwistedEdwards as TwistedEdwardsCurve;
+use phpseclib3\Crypt\EC\Curves\Curve25519;
+use phpseclib3\Crypt\EC\Curves\Ed25519;
+use phpseclib3\Crypt\EC\Curves\Ed448;
+use phpseclib3\Crypt\EC\Formats\Keys\PKCS1;
+use phpseclib3\Crypt\EC\Parameters;
+use phpseclib3\Crypt\EC\PrivateKey;
+use phpseclib3\Crypt\EC\PublicKey;
+use phpseclib3\Exception\UnsupportedAlgorithmException;
+use phpseclib3\Exception\UnsupportedCurveException;
+use phpseclib3\Exception\UnsupportedOperationException;
+use phpseclib3\File\ASN1;
+use phpseclib3\File\ASN1\Maps\ECParameters;
+use phpseclib3\Math\BigInteger;
+
+/**
+ * Pure-PHP implementation of EC.
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class EC extends AsymmetricKey
+{
+    /**
+     * Algorithm Name
+     *
+     * @var string
+     */
+    const ALGORITHM = 'EC';
+
+    /**
+     * Public Key QA
+     *
+     * @var object[]
+     */
+    protected $QA;
+
+    /**
+     * Curve
+     *
+     * @var \phpseclib3\Crypt\EC\BaseCurves\Base
+     */
+    protected $curve;
+
+    /**
+     * Signature Format
+     *
+     * @var string
+     */
+    protected $format;
+
+    /**
+     * Signature Format (Short)
+     *
+     * @var string
+     */
+    protected $shortFormat;
+
+    /**
+     * Curve Name
+     *
+     * @var string
+     */
+    private $curveName;
+
+    /**
+     * Curve Order
+     *
+     * Used for deterministic ECDSA
+     *
+     * @var \phpseclib3\Math\BigInteger
+     */
+    protected $q;
+
+    /**
+     * Alias for the private key
+     *
+     * Used for deterministic ECDSA. AsymmetricKey expects $x. I don't like x because
+     * with x you have x * the base point yielding an (x, y)-coordinate that is the
+     * public key. But the x is different depending on which side of the equal sign
+     * you're on. It's less ambiguous if you do dA * base point = (x, y)-coordinate.
+     *
+     * @var \phpseclib3\Math\BigInteger
+     */
+    protected $x;
+
+    /**
+     * Context
+     *
+     * @var string
+     */
+    protected $context;
+
+    /**
+     * Signature Format
+     *
+     * @var string
+     */
+    protected $sigFormat;
+
+    /**
+     * Create public / private key pair.
+     *
+     * @param string $curve
+     * @return \phpseclib3\Crypt\EC\PrivateKey
+     */
+    public static function createKey($curve)
+    {
+        self::initialize_static_variables();
+
+        $class = new \ReflectionClass(static::class);
+        if ($class->isFinal()) {
+            throw new \RuntimeException('createKey() should not be called from final classes (' . static::class . ')');
+        }
+
+        if (!isset(self::$engines['PHP'])) {
+            self::useBestEngine();
+        }
+
+        $curve = strtolower($curve);
+        if (self::$engines['libsodium'] && $curve == 'ed25519' && function_exists('sodium_crypto_sign_keypair')) {
+            $kp = sodium_crypto_sign_keypair();
+
+            $privatekey = EC::loadFormat('libsodium', sodium_crypto_sign_secretkey($kp));
+            //$publickey = EC::loadFormat('libsodium', sodium_crypto_sign_publickey($kp));
+
+            $privatekey->curveName = 'Ed25519';
+            //$publickey->curveName = $curve;
+
+            return $privatekey;
+        }
+
+        $privatekey = new PrivateKey();
+
+        $curveName = $curve;
+        if (preg_match('#(?:^curve|^ed)\d+$#', $curveName)) {
+            $curveName = ucfirst($curveName);
+        } elseif (substr($curveName, 0, 10) == 'brainpoolp') {
+            $curveName = 'brainpoolP' . substr($curveName, 10);
+        }
+        $curve = '\phpseclib3\Crypt\EC\Curves\\' . $curveName;
+
+        if (!class_exists($curve)) {
+            throw new UnsupportedCurveException('Named Curve of ' . $curveName . ' is not supported');
+        }
+
+        $reflect = new \ReflectionClass($curve);
+        $curveName = $reflect->isFinal() ?
+            $reflect->getParentClass()->getShortName() :
+            $reflect->getShortName();
+
+        $curve = new $curve();
+        if ($curve instanceof TwistedEdwardsCurve) {
+            $arr = $curve->extractSecret(Random::string($curve instanceof Ed448 ? 57 : 32));
+            $privatekey->dA = $dA = $arr['dA'];
+            $privatekey->secret = $arr['secret'];
+        } else {
+            $privatekey->dA = $dA = $curve->createRandomMultiplier();
+        }
+        if ($curve instanceof Curve25519 && self::$engines['libsodium']) {
+            //$r = pack('H*', '0900000000000000000000000000000000000000000000000000000000000000');
+            //$QA = sodium_crypto_scalarmult($dA->toBytes(), $r);
+            $QA = sodium_crypto_box_publickey_from_secretkey($dA->toBytes());
+            $privatekey->QA = [$curve->convertInteger(new BigInteger(strrev($QA), 256))];
+        } else {
+            $privatekey->QA = $curve->multiplyPoint($curve->getBasePoint(), $dA);
+        }
+        $privatekey->curve = $curve;
+
+        //$publickey = clone $privatekey;
+        //unset($publickey->dA);
+        //unset($publickey->x);
+
+        $privatekey->curveName = $curveName;
+        //$publickey->curveName = $curveName;
+
+        if ($privatekey->curve instanceof TwistedEdwardsCurve) {
+            return $privatekey->withHash($curve::HASH);
+        }
+
+        return $privatekey;
+    }
+
+    /**
+     * OnLoad Handler
+     *
+     * @return bool
+     */
+    protected static function onLoad(array $components)
+    {
+        if (!isset(self::$engines['PHP'])) {
+            self::useBestEngine();
+        }
+
+        if (!isset($components['dA']) && !isset($components['QA'])) {
+            $new = new Parameters();
+            $new->curve = $components['curve'];
+            return $new;
+        }
+
+        $new = isset($components['dA']) ?
+            new PrivateKey() :
+            new PublicKey();
+        $new->curve = $components['curve'];
+        $new->QA = $components['QA'];
+
+        if (isset($components['dA'])) {
+            $new->dA = $components['dA'];
+            $new->secret = $components['secret'];
+        }
+
+        if ($new->curve instanceof TwistedEdwardsCurve) {
+            return $new->withHash($components['curve']::HASH);
+        }
+
+        return $new;
+    }
+
+    /**
+     * Constructor
+     *
+     * PublicKey and PrivateKey objects can only be created from abstract RSA class
+     */
+    protected function __construct()
+    {
+        $this->sigFormat = self::validatePlugin('Signature', 'ASN1');
+        $this->shortFormat = 'ASN1';
+
+        parent::__construct();
+    }
+
+    /**
+     * Returns the curve
+     *
+     * Returns a string if it's a named curve, an array if not
+     *
+     * @return string|array
+     */
+    public function getCurve()
+    {
+        if ($this->curveName) {
+            return $this->curveName;
+        }
+
+        if ($this->curve instanceof MontgomeryCurve) {
+            $this->curveName = $this->curve instanceof Curve25519 ? 'Curve25519' : 'Curve448';
+            return $this->curveName;
+        }
+
+        if ($this->curve instanceof TwistedEdwardsCurve) {
+            $this->curveName = $this->curve instanceof Ed25519 ? 'Ed25519' : 'Ed448';
+            return $this->curveName;
+        }
+
+        $params = $this->getParameters()->toString('PKCS8', ['namedCurve' => true]);
+        $decoded = ASN1::extractBER($params);
+        $decoded = ASN1::decodeBER($decoded);
+        $decoded = ASN1::asn1map($decoded[0], ECParameters::MAP);
+        if (isset($decoded['namedCurve'])) {
+            $this->curveName = $decoded['namedCurve'];
+            return $decoded['namedCurve'];
+        }
+
+        if (!$namedCurves) {
+            PKCS1::useSpecifiedCurve();
+        }
+
+        return $decoded;
+    }
+
+    /**
+     * Returns the key size
+     *
+     * Quoting https://tools.ietf.org/html/rfc5656#section-2,
+     *
+     * "The size of a set of elliptic curve domain parameters on a prime
+     *  curve is defined as the number of bits in the binary representation
+     *  of the field order, commonly denoted by p.  Size on a
+     *  characteristic-2 curve is defined as the number of bits in the binary
+     *  representation of the field, commonly denoted by m.  A set of
+     *  elliptic curve domain parameters defines a group of order n generated
+     *  by a base point P"
+     *
+     * @return int
+     */
+    public function getLength()
+    {
+        return $this->curve->getLength();
+    }
+
+    /**
+     * Returns the current engine being used
+     *
+     * @see self::useInternalEngine()
+     * @see self::useBestEngine()
+     * @return string
+     */
+    public function getEngine()
+    {
+        if (!isset(self::$engines['PHP'])) {
+            self::useBestEngine();
+        }
+        if ($this->curve instanceof TwistedEdwardsCurve) {
+            return $this->curve instanceof Ed25519 && self::$engines['libsodium'] && !isset($this->context) ?
+                'libsodium' : 'PHP';
+        }
+
+        return self::$engines['OpenSSL'] && in_array($this->hash->getHash(), openssl_get_md_methods()) ?
+            'OpenSSL' : 'PHP';
+    }
+
+    /**
+     * Returns the public key coordinates as a string
+     *
+     * Used by ECDH
+     *
+     * @return string
+     */
+    public function getEncodedCoordinates()
+    {
+        if ($this->curve instanceof MontgomeryCurve) {
+            return strrev($this->QA[0]->toBytes(true));
+        }
+        if ($this->curve instanceof TwistedEdwardsCurve) {
+            return $this->curve->encodePoint($this->QA);
+        }
+        return "\4" . $this->QA[0]->toBytes(true) . $this->QA[1]->toBytes(true);
+    }
+
+    /**
+     * Returns the parameters
+     *
+     * @see self::getPublicKey()
+     * @param string $type optional
+     * @return mixed
+     */
+    public function getParameters($type = 'PKCS1')
+    {
+        $type = self::validatePlugin('Keys', $type, 'saveParameters');
+
+        $key = $type::saveParameters($this->curve);
+
+        return EC::load($key, 'PKCS1')
+            ->withHash($this->hash->getHash())
+            ->withSignatureFormat($this->shortFormat);
+    }
+
+    /**
+     * Determines the signature padding mode
+     *
+     * Valid values are: ASN1, SSH2, Raw
+     *
+     * @param string $format
+     */
+    public function withSignatureFormat($format)
+    {
+        if ($this->curve instanceof MontgomeryCurve) {
+            throw new UnsupportedOperationException('Montgomery Curves cannot be used to create signatures');
+        }
+
+        $new = clone $this;
+        $new->shortFormat = $format;
+        $new->sigFormat = self::validatePlugin('Signature', $format);
+        return $new;
+    }
+
+    /**
+     * Returns the signature format currently being used
+     *
+     */
+    public function getSignatureFormat()
+    {
+        return $this->shortFormat;
+    }
+
+    /**
+     * Sets the context
+     *
+     * Used by Ed25519 / Ed448.
+     *
+     * @see self::sign()
+     * @see self::verify()
+     * @param string $context optional
+     */
+    public function withContext($context = null)
+    {
+        if (!$this->curve instanceof TwistedEdwardsCurve) {
+            throw new UnsupportedCurveException('Only Ed25519 and Ed448 support contexts');
+        }
+
+        $new = clone $this;
+        if (!isset($context)) {
+            $new->context = null;
+            return $new;
+        }
+        if (!is_string($context)) {
+            throw new \InvalidArgumentException('setContext expects a string');
+        }
+        if (strlen($context) > 255) {
+            throw new \LengthException('The context is supposed to be, at most, 255 bytes long');
+        }
+        $new->context = $context;
+        return $new;
+    }
+
+    /**
+     * Returns the signature format currently being used
+     *
+     */
+    public function getContext()
+    {
+        return $this->context;
+    }
+
+    /**
+     * Determines which hashing function should be used
+     *
+     * @param string $hash
+     */
+    public function withHash($hash)
+    {
+        if ($this->curve instanceof MontgomeryCurve) {
+            throw new UnsupportedOperationException('Montgomery Curves cannot be used to create signatures');
+        }
+        if ($this->curve instanceof Ed25519 && $hash != 'sha512') {
+            throw new UnsupportedAlgorithmException('Ed25519 only supports sha512 as a hash');
+        }
+        if ($this->curve instanceof Ed448 && $hash != 'shake256-912') {
+            throw new UnsupportedAlgorithmException('Ed448 only supports shake256 with a length of 114 bytes');
+        }
+
+        return parent::withHash($hash);
+    }
+
+    /**
+     * __toString() magic method
+     *
+     * @return string
+     */
+    public function __toString()
+    {
+        if ($this->curve instanceof MontgomeryCurve) {
+            return '';
+        }
+
+        return parent::__toString();
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/BaseCurves/Base.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/BaseCurves/Base.php
new file mode 100644
index 0000000..dbc914b
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/BaseCurves/Base.php
@@ -0,0 +1,218 @@
+<?php
+
+/**
+ * Curve methods common to all curves
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\BaseCurves;
+
+use phpseclib3\Math\BigInteger;
+
+/**
+ * Base
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class Base
+{
+    /**
+     * The Order
+     *
+     * @var BigInteger
+     */
+    protected $order;
+
+    /**
+     * Finite Field Integer factory
+     *
+     * @var \phpseclib3\Math\FiniteField\Integer
+     */
+    protected $factory;
+
+    /**
+     * Returns a random integer
+     *
+     * @return object
+     */
+    public function randomInteger()
+    {
+        return $this->factory->randomInteger();
+    }
+
+    /**
+     * Converts a BigInteger to a \phpseclib3\Math\FiniteField\Integer integer
+     *
+     * @return object
+     */
+    public function convertInteger(BigInteger $x)
+    {
+        return $this->factory->newInteger($x);
+    }
+
+    /**
+     * Returns the length, in bytes, of the modulo
+     *
+     * @return integer
+     */
+    public function getLengthInBytes()
+    {
+        return $this->factory->getLengthInBytes();
+    }
+
+    /**
+     * Returns the length, in bits, of the modulo
+     *
+     * @return integer
+     */
+    public function getLength()
+    {
+        return $this->factory->getLength();
+    }
+
+    /**
+     * Multiply a point on the curve by a scalar
+     *
+     * Uses the montgomery ladder technique as described here:
+     *
+     * https://en.wikipedia.org/wiki/Elliptic_curve_point_multiplication#Montgomery_ladder
+     * https://github.com/phpecc/phpecc/issues/16#issuecomment-59176772
+     *
+     * @return array
+     */
+    public function multiplyPoint(array $p, BigInteger $d)
+    {
+        $alreadyInternal = isset($p[2]);
+        $r = $alreadyInternal ?
+            [[], $p] :
+            [[], $this->convertToInternal($p)];
+
+        $d = $d->toBits();
+        for ($i = 0; $i < strlen($d); $i++) {
+            $d_i = (int) $d[$i];
+            $r[1 - $d_i] = $this->addPoint($r[0], $r[1]);
+            $r[$d_i] = $this->doublePoint($r[$d_i]);
+        }
+
+        return $alreadyInternal ? $r[0] : $this->convertToAffine($r[0]);
+    }
+
+    /**
+     * Creates a random scalar multiplier
+     *
+     * @return BigInteger
+     */
+    public function createRandomMultiplier()
+    {
+        static $one;
+        if (!isset($one)) {
+            $one = new BigInteger(1);
+        }
+
+        return BigInteger::randomRange($one, $this->order->subtract($one));
+    }
+
+    /**
+     * Performs range check
+     */
+    public function rangeCheck(BigInteger $x)
+    {
+        static $zero;
+        if (!isset($zero)) {
+            $zero = new BigInteger();
+        }
+
+        if (!isset($this->order)) {
+            throw new \RuntimeException('setOrder needs to be called before this method');
+        }
+        if ($x->compare($this->order) > 0 || $x->compare($zero) <= 0) {
+            throw new \RangeException('x must be between 1 and the order of the curve');
+        }
+    }
+
+    /**
+     * Sets the Order
+     */
+    public function setOrder(BigInteger $order)
+    {
+        $this->order = $order;
+    }
+
+    /**
+     * Returns the Order
+     *
+     * @return \phpseclib3\Math\BigInteger
+     */
+    public function getOrder()
+    {
+        return $this->order;
+    }
+
+    /**
+     * Use a custom defined modular reduction function
+     *
+     * @return object
+     */
+    public function setReduction(callable $func)
+    {
+        $this->factory->setReduction($func);
+    }
+
+    /**
+     * Returns the affine point
+     *
+     * @return object[]
+     */
+    public function convertToAffine(array $p)
+    {
+        return $p;
+    }
+
+    /**
+     * Converts an affine point to a jacobian coordinate
+     *
+     * @return object[]
+     */
+    public function convertToInternal(array $p)
+    {
+        return $p;
+    }
+
+    /**
+     * Negates a point
+     *
+     * @return object[]
+     */
+    public function negatePoint(array $p)
+    {
+        $temp = [
+            $p[0],
+            $p[1]->negate()
+        ];
+        if (isset($p[2])) {
+            $temp[] = $p[2];
+        }
+        return $temp;
+    }
+
+    /**
+     * Multiply and Add Points
+     *
+     * @return int[]
+     */
+    public function multiplyAddPoints(array $points, array $scalars)
+    {
+        $p1 = $this->convertToInternal($points[0]);
+        $p2 = $this->convertToInternal($points[1]);
+        $p1 = $this->multiplyPoint($p1, $scalars[0]);
+        $p2 = $this->multiplyPoint($p2, $scalars[1]);
+        $r = $this->addPoint($p1, $p2);
+        return $this->convertToAffine($r);
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/BaseCurves/Binary.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/BaseCurves/Binary.php
new file mode 100644
index 0000000..4fc6c70
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/BaseCurves/Binary.php
@@ -0,0 +1,373 @@
+<?php
+
+/**
+ * Curves over y^2 + x*y = x^3 + a*x^2 + b
+ *
+ * These are curves used in SEC 2 over prime fields: http://www.secg.org/SEC2-Ver-1.0.pdf
+ * The curve is a weierstrass curve with a[3] and a[2] set to 0.
+ *
+ * Uses Jacobian Coordinates for speed if able:
+ *
+ * https://en.wikipedia.org/wiki/Jacobian_curve
+ * https://en.wikibooks.org/wiki/Cryptography/Prime_Curve/Jacobian_Coordinates
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\BaseCurves;
+
+use phpseclib3\Math\BigInteger;
+use phpseclib3\Math\BinaryField;
+use phpseclib3\Math\BinaryField\Integer as BinaryInteger;
+
+/**
+ * Curves over y^2 + x*y = x^3 + a*x^2 + b
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+class Binary extends Base
+{
+    /**
+     * Binary Field Integer factory
+     *
+     * @var \phpseclib3\Math\BinaryField
+     */
+    protected $factory;
+
+    /**
+     * Cofficient for x^1
+     *
+     * @var object
+     */
+    protected $a;
+
+    /**
+     * Cofficient for x^0
+     *
+     * @var object
+     */
+    protected $b;
+
+    /**
+     * Base Point
+     *
+     * @var object
+     */
+    protected $p;
+
+    /**
+     * The number one over the specified finite field
+     *
+     * @var object
+     */
+    protected $one;
+
+    /**
+     * The modulo
+     *
+     * @var BigInteger
+     */
+    protected $modulo;
+
+    /**
+     * The Order
+     *
+     * @var BigInteger
+     */
+    protected $order;
+
+    /**
+     * Sets the modulo
+     */
+    public function setModulo(...$modulo)
+    {
+        $this->modulo = $modulo;
+        $this->factory = new BinaryField(...$modulo);
+
+        $this->one = $this->factory->newInteger("\1");
+    }
+
+    /**
+     * Set coefficients a and b
+     *
+     * @param string $a
+     * @param string $b
+     */
+    public function setCoefficients($a, $b)
+    {
+        if (!isset($this->factory)) {
+            throw new \RuntimeException('setModulo needs to be called before this method');
+        }
+        $this->a = $this->factory->newInteger(pack('H*', $a));
+        $this->b = $this->factory->newInteger(pack('H*', $b));
+    }
+
+    /**
+     * Set x and y coordinates for the base point
+     *
+     * @param string|BinaryInteger $x
+     * @param string|BinaryInteger $y
+     */
+    public function setBasePoint($x, $y)
+    {
+        switch (true) {
+            case !is_string($x) && !$x instanceof BinaryInteger:
+                throw new \UnexpectedValueException('Argument 1 passed to Binary::setBasePoint() must be a string or an instance of BinaryField\Integer');
+            case !is_string($y) && !$y instanceof BinaryInteger:
+                throw new \UnexpectedValueException('Argument 2 passed to Binary::setBasePoint() must be a string or an instance of BinaryField\Integer');
+        }
+        if (!isset($this->factory)) {
+            throw new \RuntimeException('setModulo needs to be called before this method');
+        }
+        $this->p = [
+            is_string($x) ? $this->factory->newInteger(pack('H*', $x)) : $x,
+            is_string($y) ? $this->factory->newInteger(pack('H*', $y)) : $y
+        ];
+    }
+
+    /**
+     * Retrieve the base point as an array
+     *
+     * @return array
+     */
+    public function getBasePoint()
+    {
+        if (!isset($this->factory)) {
+            throw new \RuntimeException('setModulo needs to be called before this method');
+        }
+        /*
+        if (!isset($this->p)) {
+            throw new \RuntimeException('setBasePoint needs to be called before this method');
+        }
+        */
+        return $this->p;
+    }
+
+    /**
+     * Adds two points on the curve
+     *
+     * @return FiniteField[]
+     */
+    public function addPoint(array $p, array $q)
+    {
+        if (!isset($this->factory)) {
+            throw new \RuntimeException('setModulo needs to be called before this method');
+        }
+
+        if (!count($p) || !count($q)) {
+            if (count($q)) {
+                return $q;
+            }
+            if (count($p)) {
+                return $p;
+            }
+            return [];
+        }
+
+        if (!isset($p[2]) || !isset($q[2])) {
+            throw new \RuntimeException('Affine coordinates need to be manually converted to "Jacobi" coordinates or vice versa');
+        }
+
+        if ($p[0]->equals($q[0])) {
+            return !$p[1]->equals($q[1]) ? [] : $this->doublePoint($p);
+        }
+
+        // formulas from http://hyperelliptic.org/EFD/g12o/auto-shortw-jacobian.html
+
+        list($x1, $y1, $z1) = $p;
+        list($x2, $y2, $z2) = $q;
+
+        $o1 = $z1->multiply($z1);
+        $b = $x2->multiply($o1);
+
+        if ($z2->equals($this->one)) {
+            $d = $y2->multiply($o1)->multiply($z1);
+            $e = $x1->add($b);
+            $f = $y1->add($d);
+            $z3 = $e->multiply($z1);
+            $h = $f->multiply($x2)->add($z3->multiply($y2));
+            $i = $f->add($z3);
+            $g = $z3->multiply($z3);
+            $p1 = $this->a->multiply($g);
+            $p2 = $f->multiply($i);
+            $p3 = $e->multiply($e)->multiply($e);
+            $x3 = $p1->add($p2)->add($p3);
+            $y3 = $i->multiply($x3)->add($g->multiply($h));
+
+            return [$x3, $y3, $z3];
+        }
+
+        $o2 = $z2->multiply($z2);
+        $a = $x1->multiply($o2);
+        $c = $y1->multiply($o2)->multiply($z2);
+        $d = $y2->multiply($o1)->multiply($z1);
+        $e = $a->add($b);
+        $f = $c->add($d);
+        $g = $e->multiply($z1);
+        $h = $f->multiply($x2)->add($g->multiply($y2));
+        $z3 = $g->multiply($z2);
+        $i = $f->add($z3);
+        $p1 = $this->a->multiply($z3->multiply($z3));
+        $p2 = $f->multiply($i);
+        $p3 = $e->multiply($e)->multiply($e);
+        $x3 = $p1->add($p2)->add($p3);
+        $y3 = $i->multiply($x3)->add($g->multiply($g)->multiply($h));
+
+        return [$x3, $y3, $z3];
+    }
+
+    /**
+     * Doubles a point on a curve
+     *
+     * @return FiniteField[]
+     */
+    public function doublePoint(array $p)
+    {
+        if (!isset($this->factory)) {
+            throw new \RuntimeException('setModulo needs to be called before this method');
+        }
+
+        if (!count($p)) {
+            return [];
+        }
+
+        if (!isset($p[2])) {
+            throw new \RuntimeException('Affine coordinates need to be manually converted to "Jacobi" coordinates or vice versa');
+        }
+
+        // formulas from http://hyperelliptic.org/EFD/g12o/auto-shortw-jacobian.html
+
+        list($x1, $y1, $z1) = $p;
+
+        $a = $x1->multiply($x1);
+        $b = $a->multiply($a);
+
+        if ($z1->equals($this->one)) {
+            $x3 = $b->add($this->b);
+            $z3 = clone $x1;
+            $p1 = $a->add($y1)->add($z3)->multiply($this->b);
+            $p2 = $a->add($y1)->multiply($b);
+            $y3 = $p1->add($p2);
+
+            return [$x3, $y3, $z3];
+        }
+
+        $c = $z1->multiply($z1);
+        $d = $c->multiply($c);
+        $x3 = $b->add($this->b->multiply($d->multiply($d)));
+        $z3 = $x1->multiply($c);
+        $p1 = $b->multiply($z3);
+        $p2 = $a->add($y1->multiply($z1))->add($z3)->multiply($x3);
+        $y3 = $p1->add($p2);
+
+        return [$x3, $y3, $z3];
+    }
+
+    /**
+     * Returns the X coordinate and the derived Y coordinate
+     *
+     * Not supported because it is covered by patents.
+     * Quoting https://www.openssl.org/docs/man1.1.0/apps/ecparam.html ,
+     *
+     * "Due to patent issues the compressed option is disabled by default for binary curves
+     *  and can be enabled by defining the preprocessor macro OPENSSL_EC_BIN_PT_COMP at
+     *  compile time."
+     *
+     * @return array
+     */
+    public function derivePoint($m)
+    {
+        throw new \RuntimeException('Point compression on binary finite field elliptic curves is not supported');
+    }
+
+    /**
+     * Tests whether or not the x / y values satisfy the equation
+     *
+     * @return boolean
+     */
+    public function verifyPoint(array $p)
+    {
+        list($x, $y) = $p;
+        $lhs = $y->multiply($y);
+        $lhs = $lhs->add($x->multiply($y));
+        $x2 = $x->multiply($x);
+        $x3 = $x2->multiply($x);
+        $rhs = $x3->add($this->a->multiply($x2))->add($this->b);
+
+        return $lhs->equals($rhs);
+    }
+
+    /**
+     * Returns the modulo
+     *
+     * @return \phpseclib3\Math\BigInteger
+     */
+    public function getModulo()
+    {
+        return $this->modulo;
+    }
+
+    /**
+     * Returns the a coefficient
+     *
+     * @return \phpseclib3\Math\PrimeField\Integer
+     */
+    public function getA()
+    {
+        return $this->a;
+    }
+
+    /**
+     * Returns the a coefficient
+     *
+     * @return \phpseclib3\Math\PrimeField\Integer
+     */
+    public function getB()
+    {
+        return $this->b;
+    }
+
+    /**
+     * Returns the affine point
+     *
+     * A Jacobian Coordinate is of the form (x, y, z).
+     * To convert a Jacobian Coordinate to an Affine Point
+     * you do (x / z^2, y / z^3)
+     *
+     * @return \phpseclib3\Math\PrimeField\Integer[]
+     */
+    public function convertToAffine(array $p)
+    {
+        if (!isset($p[2])) {
+            return $p;
+        }
+        list($x, $y, $z) = $p;
+        $z = $this->one->divide($z);
+        $z2 = $z->multiply($z);
+        return [
+            $x->multiply($z2),
+            $y->multiply($z2)->multiply($z)
+        ];
+    }
+
+    /**
+     * Converts an affine point to a jacobian coordinate
+     *
+     * @return \phpseclib3\Math\PrimeField\Integer[]
+     */
+    public function convertToInternal(array $p)
+    {
+        if (isset($p[2])) {
+            return $p;
+        }
+
+        $p[2] = clone $this->one;
+        $p['fresh'] = true;
+        return $p;
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/BaseCurves/KoblitzPrime.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/BaseCurves/KoblitzPrime.php
new file mode 100644
index 0000000..d8492eb
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/BaseCurves/KoblitzPrime.php
@@ -0,0 +1,335 @@
+<?php
+
+/**
+ * Generalized Koblitz Curves over y^2 = x^3 + b.
+ *
+ * According to http://www.secg.org/SEC2-Ver-1.0.pdf Koblitz curves are over the GF(2**m)
+ * finite field. Both the $a$ and $b$ coefficients are either 0 or 1. However, SEC2
+ * generalizes the definition to include curves over GF(P) "which possess an efficiently
+ * computable endomorphism".
+ *
+ * For these generalized Koblitz curves $b$ doesn't have to be 0 or 1. Whether or not $a$
+ * has any restrictions on it is unclear, however, for all the GF(P) Koblitz curves defined
+ * in SEC2 v1.0 $a$ is $0$ so all of the methods defined herein will assume that it is.
+ *
+ * I suppose we could rename the $b$ coefficient to $a$, however, the documentation refers
+ * to $b$ so we'll just keep it.
+ *
+ * If a later version of SEC2 comes out wherein some $a$ values are non-zero we can create a
+ * new method for those. eg. KoblitzA1Prime.php or something.
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\BaseCurves;
+
+use phpseclib3\Math\BigInteger;
+use phpseclib3\Math\PrimeField;
+
+/**
+ * Curves over y^2 = x^3 + b
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+class KoblitzPrime extends Prime
+{
+    /**
+     * Basis
+     *
+     * @var list<array{a: BigInteger, b: BigInteger}>
+     */
+    protected $basis;
+
+    /**
+     * Beta
+     *
+     * @var PrimeField\Integer
+     */
+    protected $beta;
+
+    // don't overwrite setCoefficients() with one that only accepts one parameter so that
+    // one might be able to switch between KoblitzPrime and Prime more easily (for benchmarking
+    // purposes).
+
+    /**
+     * Multiply and Add Points
+     *
+     * Uses a efficiently computable endomorphism to achieve a slight speedup
+     *
+     * Adapted from:
+     * https://github.com/indutny/elliptic/blob/725bd91/lib/elliptic/curve/short.js#L219
+     *
+     * @return int[]
+     */
+    public function multiplyAddPoints(array $points, array $scalars)
+    {
+        static $zero, $one, $two;
+        if (!isset($two)) {
+            $two = new BigInteger(2);
+            $one = new BigInteger(1);
+        }
+
+        if (!isset($this->beta)) {
+            // get roots
+            $inv = $this->one->divide($this->two)->negate();
+            $s = $this->three->negate()->squareRoot()->multiply($inv);
+            $betas = [
+                $inv->add($s),
+                $inv->subtract($s)
+            ];
+            $this->beta = $betas[0]->compare($betas[1]) < 0 ? $betas[0] : $betas[1];
+            //echo strtoupper($this->beta->toHex(true)) . "\n"; exit;
+        }
+
+        if (!isset($this->basis)) {
+            $factory = new PrimeField($this->order);
+            $tempOne = $factory->newInteger($one);
+            $tempTwo = $factory->newInteger($two);
+            $tempThree = $factory->newInteger(new BigInteger(3));
+
+            $inv = $tempOne->divide($tempTwo)->negate();
+            $s = $tempThree->negate()->squareRoot()->multiply($inv);
+
+            $lambdas = [
+                $inv->add($s),
+                $inv->subtract($s)
+            ];
+
+            $lhs = $this->multiplyPoint($this->p, $lambdas[0])[0];
+            $rhs = $this->p[0]->multiply($this->beta);
+            $lambda = $lhs->equals($rhs) ? $lambdas[0] : $lambdas[1];
+
+            $this->basis = static::extendedGCD($lambda->toBigInteger(), $this->order);
+            ///*
+            foreach ($this->basis as $basis) {
+                echo strtoupper($basis['a']->toHex(true)) . "\n";
+                echo strtoupper($basis['b']->toHex(true)) . "\n\n";
+            }
+            exit;
+            //*/
+        }
+
+        $npoints = $nscalars = [];
+        for ($i = 0; $i < count($points); $i++) {
+            $p = $points[$i];
+            $k = $scalars[$i]->toBigInteger();
+
+            // begin split
+            list($v1, $v2) = $this->basis;
+
+            $c1 = $v2['b']->multiply($k);
+            list($c1, $r) = $c1->divide($this->order);
+            if ($this->order->compare($r->multiply($two)) <= 0) {
+                $c1 = $c1->add($one);
+            }
+
+            $c2 = $v1['b']->negate()->multiply($k);
+            list($c2, $r) = $c2->divide($this->order);
+            if ($this->order->compare($r->multiply($two)) <= 0) {
+                $c2 = $c2->add($one);
+            }
+
+            $p1 = $c1->multiply($v1['a']);
+            $p2 = $c2->multiply($v2['a']);
+            $q1 = $c1->multiply($v1['b']);
+            $q2 = $c2->multiply($v2['b']);
+
+            $k1 = $k->subtract($p1)->subtract($p2);
+            $k2 = $q1->add($q2)->negate();
+            // end split
+
+            $beta = [
+                $p[0]->multiply($this->beta),
+                $p[1],
+                clone $this->one
+            ];
+
+            if (isset($p['naf'])) {
+                $beta['naf'] = array_map(function ($p) {
+                    return [
+                        $p[0]->multiply($this->beta),
+                        $p[1],
+                        clone $this->one
+                    ];
+                }, $p['naf']);
+                $beta['nafwidth'] = $p['nafwidth'];
+            }
+
+            if ($k1->isNegative()) {
+                $k1 = $k1->negate();
+                $p = $this->negatePoint($p);
+            }
+
+            if ($k2->isNegative()) {
+                $k2 = $k2->negate();
+                $beta = $this->negatePoint($beta);
+            }
+
+            $pos = 2 * $i;
+            $npoints[$pos] = $p;
+            $nscalars[$pos] = $this->factory->newInteger($k1);
+
+            $pos++;
+            $npoints[$pos] = $beta;
+            $nscalars[$pos] = $this->factory->newInteger($k2);
+        }
+
+        return parent::multiplyAddPoints($npoints, $nscalars);
+    }
+
+    /**
+     * Returns the numerator and denominator of the slope
+     *
+     * @return FiniteField[]
+     */
+    protected function doublePointHelper(array $p)
+    {
+        $numerator = $this->three->multiply($p[0])->multiply($p[0]);
+        $denominator = $this->two->multiply($p[1]);
+        return [$numerator, $denominator];
+    }
+
+    /**
+     * Doubles a jacobian coordinate on the curve
+     *
+     * See http://hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-0.html#doubling-dbl-2009-l
+     *
+     * @return FiniteField[]
+     */
+    protected function jacobianDoublePoint(array $p)
+    {
+        list($x1, $y1, $z1) = $p;
+        $a = $x1->multiply($x1);
+        $b = $y1->multiply($y1);
+        $c = $b->multiply($b);
+        $d = $x1->add($b);
+        $d = $d->multiply($d)->subtract($a)->subtract($c)->multiply($this->two);
+        $e = $this->three->multiply($a);
+        $f = $e->multiply($e);
+        $x3 = $f->subtract($this->two->multiply($d));
+        $y3 = $e->multiply($d->subtract($x3))->subtract(
+            $this->eight->multiply($c)
+        );
+        $z3 = $this->two->multiply($y1)->multiply($z1);
+        return [$x3, $y3, $z3];
+    }
+
+    /**
+     * Doubles a "fresh" jacobian coordinate on the curve
+     *
+     * See http://hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-0.html#doubling-mdbl-2007-bl
+     *
+     * @return FiniteField[]
+     */
+    protected function jacobianDoublePointMixed(array $p)
+    {
+        list($x1, $y1) = $p;
+        $xx = $x1->multiply($x1);
+        $yy = $y1->multiply($y1);
+        $yyyy = $yy->multiply($yy);
+        $s = $x1->add($yy);
+        $s = $s->multiply($s)->subtract($xx)->subtract($yyyy)->multiply($this->two);
+        $m = $this->three->multiply($xx);
+        $t = $m->multiply($m)->subtract($this->two->multiply($s));
+        $x3 = $t;
+        $y3 = $s->subtract($t);
+        $y3 = $m->multiply($y3)->subtract($this->eight->multiply($yyyy));
+        $z3 = $this->two->multiply($y1);
+        return [$x3, $y3, $z3];
+    }
+
+    /**
+     * Tests whether or not the x / y values satisfy the equation
+     *
+     * @return boolean
+     */
+    public function verifyPoint(array $p)
+    {
+        list($x, $y) = $p;
+        $lhs = $y->multiply($y);
+        $temp = $x->multiply($x)->multiply($x);
+        $rhs = $temp->add($this->b);
+
+        return $lhs->equals($rhs);
+    }
+
+    /**
+     * Calculates the parameters needed from the Euclidean algorithm as discussed at
+     * http://diamond.boisestate.edu/~liljanab/MATH308/GuideToECC.pdf#page=148
+     *
+     * @param BigInteger $u
+     * @param BigInteger $v
+     * @return BigInteger[]
+     */
+    protected static function extendedGCD(BigInteger $u, BigInteger $v)
+    {
+        $one = new BigInteger(1);
+        $zero = new BigInteger();
+
+        $a = clone $one;
+        $b = clone $zero;
+        $c = clone $zero;
+        $d = clone $one;
+
+        $stop = $v->bitwise_rightShift($v->getLength() >> 1);
+
+        $a1 = clone $zero;
+        $b1 = clone $zero;
+        $a2 = clone $zero;
+        $b2 = clone $zero;
+
+        $postGreatestIndex = 0;
+
+        while (!$v->equals($zero)) {
+            list($q) = $u->divide($v);
+
+            $temp = $u;
+            $u = $v;
+            $v = $temp->subtract($v->multiply($q));
+
+            $temp = $a;
+            $a = $c;
+            $c = $temp->subtract($a->multiply($q));
+
+            $temp = $b;
+            $b = $d;
+            $d = $temp->subtract($b->multiply($q));
+
+            if ($v->compare($stop) > 0) {
+                $a0 = $v;
+                $b0 = $c;
+            } else {
+                $postGreatestIndex++;
+            }
+
+            if ($postGreatestIndex == 1) {
+                $a1 = $v;
+                $b1 = $c->negate();
+            }
+
+            if ($postGreatestIndex == 2) {
+                $rhs = $a0->multiply($a0)->add($b0->multiply($b0));
+                $lhs = $v->multiply($v)->add($b->multiply($b));
+                if ($lhs->compare($rhs) <= 0) {
+                    $a2 = $a0;
+                    $b2 = $b0->negate();
+                } else {
+                    $a2 = $v;
+                    $b2 = $c->negate();
+                }
+
+                break;
+            }
+        }
+
+        return [
+            ['a' => $a1, 'b' => $b1],
+            ['a' => $a2, 'b' => $b2]
+        ];
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/BaseCurves/Montgomery.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/BaseCurves/Montgomery.php
new file mode 100644
index 0000000..e3fa50b
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/BaseCurves/Montgomery.php
@@ -0,0 +1,279 @@
+<?php
+
+/**
+ * Curves over y^2 = x^3 + a*x + x
+ *
+ * Technically, a Montgomery curve has a coefficient for y^2 but for Curve25519 and Curve448 that
+ * coefficient is 1.
+ *
+ * Curve25519 and Curve448 do not make use of the y coordinate, which makes it unsuitable for use
+ * with ECDSA / EdDSA. A few other differences between Curve25519 and Ed25519 are discussed at
+ * https://crypto.stackexchange.com/a/43058/4520
+ *
+ * More info:
+ *
+ * https://en.wikipedia.org/wiki/Montgomery_curve
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2019 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\BaseCurves;
+
+use phpseclib3\Crypt\EC\Curves\Curve25519;
+use phpseclib3\Math\BigInteger;
+use phpseclib3\Math\PrimeField;
+use phpseclib3\Math\PrimeField\Integer as PrimeInteger;
+
+/**
+ * Curves over y^2 = x^3 + a*x + x
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+class Montgomery extends Base
+{
+    /**
+     * Prime Field Integer factory
+     *
+     * @var \phpseclib3\Math\PrimeField
+     */
+    protected $factory;
+
+    /**
+     * Cofficient for x
+     *
+     * @var object
+     */
+    protected $a;
+
+    /**
+     * Constant used for point doubling
+     *
+     * @var object
+     */
+    protected $a24;
+
+    /**
+     * The Number Zero
+     *
+     * @var object
+     */
+    protected $zero;
+
+    /**
+     * The Number One
+     *
+     * @var object
+     */
+    protected $one;
+
+    /**
+     * Base Point
+     *
+     * @var object
+     */
+    protected $p;
+
+    /**
+     * The modulo
+     *
+     * @var BigInteger
+     */
+    protected $modulo;
+
+    /**
+     * The Order
+     *
+     * @var BigInteger
+     */
+    protected $order;
+
+    /**
+     * Sets the modulo
+     */
+    public function setModulo(BigInteger $modulo)
+    {
+        $this->modulo = $modulo;
+        $this->factory = new PrimeField($modulo);
+        $this->zero = $this->factory->newInteger(new BigInteger());
+        $this->one = $this->factory->newInteger(new BigInteger(1));
+    }
+
+    /**
+     * Set coefficients a
+     */
+    public function setCoefficients(BigInteger $a)
+    {
+        if (!isset($this->factory)) {
+            throw new \RuntimeException('setModulo needs to be called before this method');
+        }
+        $this->a = $this->factory->newInteger($a);
+        $two = $this->factory->newInteger(new BigInteger(2));
+        $four = $this->factory->newInteger(new BigInteger(4));
+        $this->a24 = $this->a->subtract($two)->divide($four);
+    }
+
+    /**
+     * Set x and y coordinates for the base point
+     *
+     * @param BigInteger|PrimeInteger $x
+     * @param BigInteger|PrimeInteger $y
+     * @return PrimeInteger[]
+     */
+    public function setBasePoint($x, $y)
+    {
+        switch (true) {
+            case !$x instanceof BigInteger && !$x instanceof PrimeInteger:
+                throw new \UnexpectedValueException('Argument 1 passed to Prime::setBasePoint() must be an instance of either BigInteger or PrimeField\Integer');
+            case !$y instanceof BigInteger && !$y instanceof PrimeInteger:
+                throw new \UnexpectedValueException('Argument 2 passed to Prime::setBasePoint() must be an instance of either BigInteger or PrimeField\Integer');
+        }
+        if (!isset($this->factory)) {
+            throw new \RuntimeException('setModulo needs to be called before this method');
+        }
+        $this->p = [
+            $x instanceof BigInteger ? $this->factory->newInteger($x) : $x,
+            $y instanceof BigInteger ? $this->factory->newInteger($y) : $y
+        ];
+    }
+
+    /**
+     * Retrieve the base point as an array
+     *
+     * @return array
+     */
+    public function getBasePoint()
+    {
+        if (!isset($this->factory)) {
+            throw new \RuntimeException('setModulo needs to be called before this method');
+        }
+        /*
+        if (!isset($this->p)) {
+            throw new \RuntimeException('setBasePoint needs to be called before this method');
+        }
+        */
+        return $this->p;
+    }
+
+    /**
+     * Doubles and adds a point on a curve
+     *
+     * See https://tools.ietf.org/html/draft-ietf-tls-curve25519-01#appendix-A.1.3
+     *
+     * @return FiniteField[][]
+     */
+    private function doubleAndAddPoint(array $p, array $q, PrimeInteger $x1)
+    {
+        if (!isset($this->factory)) {
+            throw new \RuntimeException('setModulo needs to be called before this method');
+        }
+
+        if (!count($p) || !count($q)) {
+            return [];
+        }
+
+        if (!isset($p[1])) {
+            throw new \RuntimeException('Affine coordinates need to be manually converted to XZ coordinates');
+        }
+
+        list($x2, $z2) = $p;
+        list($x3, $z3) = $q;
+
+        $a = $x2->add($z2);
+        $aa = $a->multiply($a);
+        $b = $x2->subtract($z2);
+        $bb = $b->multiply($b);
+        $e = $aa->subtract($bb);
+        $c = $x3->add($z3);
+        $d = $x3->subtract($z3);
+        $da = $d->multiply($a);
+        $cb = $c->multiply($b);
+        $temp = $da->add($cb);
+        $x5 = $temp->multiply($temp);
+        $temp = $da->subtract($cb);
+        $z5 = $x1->multiply($temp->multiply($temp));
+        $x4 = $aa->multiply($bb);
+        $temp = static::class == Curve25519::class ? $bb : $aa;
+        $z4 = $e->multiply($temp->add($this->a24->multiply($e)));
+
+        return [
+            [$x4, $z4],
+            [$x5, $z5]
+        ];
+    }
+
+    /**
+     * Multiply a point on the curve by a scalar
+     *
+     * Uses the montgomery ladder technique as described here:
+     *
+     * https://en.wikipedia.org/wiki/Elliptic_curve_point_multiplication#Montgomery_ladder
+     * https://github.com/phpecc/phpecc/issues/16#issuecomment-59176772
+     *
+     * @return array
+     */
+    public function multiplyPoint(array $p, BigInteger $d)
+    {
+        $p1 = [$this->one, $this->zero];
+        $alreadyInternal = isset($x[1]);
+        $p2 = $this->convertToInternal($p);
+        $x = $p[0];
+
+        $b = $d->toBits();
+        $b = str_pad($b, 256, '0', STR_PAD_LEFT);
+        for ($i = 0; $i < strlen($b); $i++) {
+            $b_i = (int) $b[$i];
+            if ($b_i) {
+                list($p2, $p1) = $this->doubleAndAddPoint($p2, $p1, $x);
+            } else {
+                list($p1, $p2) = $this->doubleAndAddPoint($p1, $p2, $x);
+            }
+        }
+
+        return $alreadyInternal ? $p1 : $this->convertToAffine($p1);
+    }
+
+    /**
+     * Converts an affine point to an XZ coordinate
+     *
+     * From https://hyperelliptic.org/EFD/g1p/auto-montgom-xz.html
+     *
+     * XZ coordinates represent x y as X Z satsfying the following equations:
+     *
+     *   x=X/Z
+     *
+     * @return \phpseclib3\Math\PrimeField\Integer[]
+     */
+    public function convertToInternal(array $p)
+    {
+        if (empty($p)) {
+            return [clone $this->zero, clone $this->one];
+        }
+
+        if (isset($p[1])) {
+            return $p;
+        }
+
+        $p[1] = clone $this->one;
+
+        return $p;
+    }
+
+    /**
+     * Returns the affine point
+     *
+     * @return \phpseclib3\Math\PrimeField\Integer[]
+     */
+    public function convertToAffine(array $p)
+    {
+        if (!isset($p[1])) {
+            return $p;
+        }
+        list($x, $z) = $p;
+        return [$x->divide($z)];
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/BaseCurves/Prime.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/BaseCurves/Prime.php
new file mode 100644
index 0000000..6250dfb
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/BaseCurves/Prime.php
@@ -0,0 +1,785 @@
+<?php
+
+/**
+ * Curves over y^2 = x^3 + a*x + b
+ *
+ * These are curves used in SEC 2 over prime fields: http://www.secg.org/SEC2-Ver-1.0.pdf
+ * The curve is a weierstrass curve with a[1], a[3] and a[2] set to 0.
+ *
+ * Uses Jacobian Coordinates for speed if able:
+ *
+ * https://en.wikipedia.org/wiki/Jacobian_curve
+ * https://en.wikibooks.org/wiki/Cryptography/Prime_Curve/Jacobian_Coordinates
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\BaseCurves;
+
+use phpseclib3\Common\Functions\Strings;
+use phpseclib3\Math\BigInteger;
+use phpseclib3\Math\Common\FiniteField\Integer;
+use phpseclib3\Math\PrimeField;
+use phpseclib3\Math\PrimeField\Integer as PrimeInteger;
+
+/**
+ * Curves over y^2 = x^3 + a*x + b
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+class Prime extends Base
+{
+    /**
+     * Prime Field Integer factory
+     *
+     * @var \phpseclib3\Math\PrimeFields
+     */
+    protected $factory;
+
+    /**
+     * Cofficient for x^1
+     *
+     * @var object
+     */
+    protected $a;
+
+    /**
+     * Cofficient for x^0
+     *
+     * @var object
+     */
+    protected $b;
+
+    /**
+     * Base Point
+     *
+     * @var object
+     */
+    protected $p;
+
+    /**
+     * The number one over the specified finite field
+     *
+     * @var object
+     */
+    protected $one;
+
+    /**
+     * The number two over the specified finite field
+     *
+     * @var object
+     */
+    protected $two;
+
+    /**
+     * The number three over the specified finite field
+     *
+     * @var object
+     */
+    protected $three;
+
+    /**
+     * The number four over the specified finite field
+     *
+     * @var object
+     */
+    protected $four;
+
+    /**
+     * The number eight over the specified finite field
+     *
+     * @var object
+     */
+    protected $eight;
+
+    /**
+     * The modulo
+     *
+     * @var BigInteger
+     */
+    protected $modulo;
+
+    /**
+     * The Order
+     *
+     * @var BigInteger
+     */
+    protected $order;
+
+    /**
+     * Sets the modulo
+     */
+    public function setModulo(BigInteger $modulo)
+    {
+        $this->modulo = $modulo;
+        $this->factory = new PrimeField($modulo);
+        $this->two = $this->factory->newInteger(new BigInteger(2));
+        $this->three = $this->factory->newInteger(new BigInteger(3));
+        // used by jacobian coordinates
+        $this->one = $this->factory->newInteger(new BigInteger(1));
+        $this->four = $this->factory->newInteger(new BigInteger(4));
+        $this->eight = $this->factory->newInteger(new BigInteger(8));
+    }
+
+    /**
+     * Set coefficients a and b
+     */
+    public function setCoefficients(BigInteger $a, BigInteger $b)
+    {
+        if (!isset($this->factory)) {
+            throw new \RuntimeException('setModulo needs to be called before this method');
+        }
+        $this->a = $this->factory->newInteger($a);
+        $this->b = $this->factory->newInteger($b);
+    }
+
+    /**
+     * Set x and y coordinates for the base point
+     *
+     * @param BigInteger|PrimeInteger $x
+     * @param BigInteger|PrimeInteger $y
+     * @return PrimeInteger[]
+     */
+    public function setBasePoint($x, $y)
+    {
+        switch (true) {
+            case !$x instanceof BigInteger && !$x instanceof PrimeInteger:
+                throw new \UnexpectedValueException('Argument 1 passed to Prime::setBasePoint() must be an instance of either BigInteger or PrimeField\Integer');
+            case !$y instanceof BigInteger && !$y instanceof PrimeInteger:
+                throw new \UnexpectedValueException('Argument 2 passed to Prime::setBasePoint() must be an instance of either BigInteger or PrimeField\Integer');
+        }
+        if (!isset($this->factory)) {
+            throw new \RuntimeException('setModulo needs to be called before this method');
+        }
+        $this->p = [
+            $x instanceof BigInteger ? $this->factory->newInteger($x) : $x,
+            $y instanceof BigInteger ? $this->factory->newInteger($y) : $y
+        ];
+    }
+
+    /**
+     * Retrieve the base point as an array
+     *
+     * @return array
+     */
+    public function getBasePoint()
+    {
+        if (!isset($this->factory)) {
+            throw new \RuntimeException('setModulo needs to be called before this method');
+        }
+        /*
+        if (!isset($this->p)) {
+            throw new \RuntimeException('setBasePoint needs to be called before this method');
+        }
+        */
+        return $this->p;
+    }
+
+    /**
+     * Adds two "fresh" jacobian form on the curve
+     *
+     * @return FiniteField[]
+     */
+    protected function jacobianAddPointMixedXY(array $p, array $q)
+    {
+        list($u1, $s1) = $p;
+        list($u2, $s2) = $q;
+        if ($u1->equals($u2)) {
+            if (!$s1->equals($s2)) {
+                return [];
+            } else {
+                return $this->doublePoint($p);
+            }
+        }
+        $h = $u2->subtract($u1);
+        $r = $s2->subtract($s1);
+        $h2 = $h->multiply($h);
+        $h3 = $h2->multiply($h);
+        $v = $u1->multiply($h2);
+        $x3 = $r->multiply($r)->subtract($h3)->subtract($v->multiply($this->two));
+        $y3 = $r->multiply(
+            $v->subtract($x3)
+        )->subtract(
+            $s1->multiply($h3)
+        );
+        return [$x3, $y3, $h];
+    }
+
+    /**
+     * Adds one "fresh" jacobian form on the curve
+     *
+     * The second parameter should be the "fresh" one
+     *
+     * @return FiniteField[]
+     */
+    protected function jacobianAddPointMixedX(array $p, array $q)
+    {
+        list($u1, $s1, $z1) = $p;
+        list($x2, $y2) = $q;
+
+        $z12 = $z1->multiply($z1);
+
+        $u2 = $x2->multiply($z12);
+        $s2 = $y2->multiply($z12->multiply($z1));
+        if ($u1->equals($u2)) {
+            if (!$s1->equals($s2)) {
+                return [];
+            } else {
+                return $this->doublePoint($p);
+            }
+        }
+        $h = $u2->subtract($u1);
+        $r = $s2->subtract($s1);
+        $h2 = $h->multiply($h);
+        $h3 = $h2->multiply($h);
+        $v = $u1->multiply($h2);
+        $x3 = $r->multiply($r)->subtract($h3)->subtract($v->multiply($this->two));
+        $y3 = $r->multiply(
+            $v->subtract($x3)
+        )->subtract(
+            $s1->multiply($h3)
+        );
+        $z3 = $h->multiply($z1);
+        return [$x3, $y3, $z3];
+    }
+
+    /**
+     * Adds two jacobian coordinates on the curve
+     *
+     * @return FiniteField[]
+     */
+    protected function jacobianAddPoint(array $p, array $q)
+    {
+        list($x1, $y1, $z1) = $p;
+        list($x2, $y2, $z2) = $q;
+
+        $z12 = $z1->multiply($z1);
+        $z22 = $z2->multiply($z2);
+
+        $u1 = $x1->multiply($z22);
+        $u2 = $x2->multiply($z12);
+        $s1 = $y1->multiply($z22->multiply($z2));
+        $s2 = $y2->multiply($z12->multiply($z1));
+        if ($u1->equals($u2)) {
+            if (!$s1->equals($s2)) {
+                return [];
+            } else {
+                return $this->doublePoint($p);
+            }
+        }
+        $h = $u2->subtract($u1);
+        $r = $s2->subtract($s1);
+        $h2 = $h->multiply($h);
+        $h3 = $h2->multiply($h);
+        $v = $u1->multiply($h2);
+        $x3 = $r->multiply($r)->subtract($h3)->subtract($v->multiply($this->two));
+        $y3 = $r->multiply(
+            $v->subtract($x3)
+        )->subtract(
+            $s1->multiply($h3)
+        );
+        $z3 = $h->multiply($z1)->multiply($z2);
+        return [$x3, $y3, $z3];
+    }
+
+    /**
+     * Adds two points on the curve
+     *
+     * @return FiniteField[]
+     */
+    public function addPoint(array $p, array $q)
+    {
+        if (!isset($this->factory)) {
+            throw new \RuntimeException('setModulo needs to be called before this method');
+        }
+
+        if (!count($p) || !count($q)) {
+            if (count($q)) {
+                return $q;
+            }
+            if (count($p)) {
+                return $p;
+            }
+            return [];
+        }
+
+        // use jacobian coordinates
+        if (isset($p[2]) && isset($q[2])) {
+            if (isset($p['fresh']) && isset($q['fresh'])) {
+                return $this->jacobianAddPointMixedXY($p, $q);
+            }
+            if (isset($p['fresh'])) {
+                return $this->jacobianAddPointMixedX($q, $p);
+            }
+            if (isset($q['fresh'])) {
+                return $this->jacobianAddPointMixedX($p, $q);
+            }
+            return $this->jacobianAddPoint($p, $q);
+        }
+
+        if (isset($p[2]) || isset($q[2])) {
+            throw new \RuntimeException('Affine coordinates need to be manually converted to Jacobi coordinates or vice versa');
+        }
+
+        if ($p[0]->equals($q[0])) {
+            if (!$p[1]->equals($q[1])) {
+                return [];
+            } else { // eg. doublePoint
+                list($numerator, $denominator) = $this->doublePointHelper($p);
+            }
+        } else {
+            $numerator = $q[1]->subtract($p[1]);
+            $denominator = $q[0]->subtract($p[0]);
+        }
+        $slope = $numerator->divide($denominator);
+        $x = $slope->multiply($slope)->subtract($p[0])->subtract($q[0]);
+        $y = $slope->multiply($p[0]->subtract($x))->subtract($p[1]);
+
+        return [$x, $y];
+    }
+
+    /**
+     * Returns the numerator and denominator of the slope
+     *
+     * @return FiniteField[]
+     */
+    protected function doublePointHelper(array $p)
+    {
+        $numerator = $this->three->multiply($p[0])->multiply($p[0])->add($this->a);
+        $denominator = $this->two->multiply($p[1]);
+        return [$numerator, $denominator];
+    }
+
+    /**
+     * Doubles a jacobian coordinate on the curve
+     *
+     * @return FiniteField[]
+     */
+    protected function jacobianDoublePoint(array $p)
+    {
+        list($x, $y, $z) = $p;
+        $x2 = $x->multiply($x);
+        $y2 = $y->multiply($y);
+        $z2 = $z->multiply($z);
+        $s = $this->four->multiply($x)->multiply($y2);
+        $m1 = $this->three->multiply($x2);
+        $m2 = $this->a->multiply($z2->multiply($z2));
+        $m = $m1->add($m2);
+        $x1 = $m->multiply($m)->subtract($this->two->multiply($s));
+        $y1 = $m->multiply($s->subtract($x1))->subtract(
+            $this->eight->multiply($y2->multiply($y2))
+        );
+        $z1 = $this->two->multiply($y)->multiply($z);
+        return [$x1, $y1, $z1];
+    }
+
+    /**
+     * Doubles a "fresh" jacobian coordinate on the curve
+     *
+     * @return FiniteField[]
+     */
+    protected function jacobianDoublePointMixed(array $p)
+    {
+        list($x, $y) = $p;
+        $x2 = $x->multiply($x);
+        $y2 = $y->multiply($y);
+        $s = $this->four->multiply($x)->multiply($y2);
+        $m1 = $this->three->multiply($x2);
+        $m = $m1->add($this->a);
+        $x1 = $m->multiply($m)->subtract($this->two->multiply($s));
+        $y1 = $m->multiply($s->subtract($x1))->subtract(
+            $this->eight->multiply($y2->multiply($y2))
+        );
+        $z1 = $this->two->multiply($y);
+        return [$x1, $y1, $z1];
+    }
+
+    /**
+     * Doubles a point on a curve
+     *
+     * @return FiniteField[]
+     */
+    public function doublePoint(array $p)
+    {
+        if (!isset($this->factory)) {
+            throw new \RuntimeException('setModulo needs to be called before this method');
+        }
+
+        if (!count($p)) {
+            return [];
+        }
+
+        // use jacobian coordinates
+        if (isset($p[2])) {
+            if (isset($p['fresh'])) {
+                return $this->jacobianDoublePointMixed($p);
+            }
+            return $this->jacobianDoublePoint($p);
+        }
+
+        list($numerator, $denominator) = $this->doublePointHelper($p);
+
+        $slope = $numerator->divide($denominator);
+
+        $x = $slope->multiply($slope)->subtract($p[0])->subtract($p[0]);
+        $y = $slope->multiply($p[0]->subtract($x))->subtract($p[1]);
+
+        return [$x, $y];
+    }
+
+    /**
+     * Returns the X coordinate and the derived Y coordinate
+     *
+     * @return array
+     */
+    public function derivePoint($m)
+    {
+        $y = ord(Strings::shift($m));
+        $x = new BigInteger($m, 256);
+        $xp = $this->convertInteger($x);
+        switch ($y) {
+            case 2:
+                $ypn = false;
+                break;
+            case 3:
+                $ypn = true;
+                break;
+            default:
+                throw new \RuntimeException('Coordinate not in recognized format');
+        }
+        $temp = $xp->multiply($this->a);
+        $temp = $xp->multiply($xp)->multiply($xp)->add($temp);
+        $temp = $temp->add($this->b);
+        $b = $temp->squareRoot();
+        if (!$b) {
+            throw new \RuntimeException('Unable to derive Y coordinate');
+        }
+        $bn = $b->isOdd();
+        $yp = $ypn == $bn ? $b : $b->negate();
+        return [$xp, $yp];
+    }
+
+    /**
+     * Tests whether or not the x / y values satisfy the equation
+     *
+     * @return boolean
+     */
+    public function verifyPoint(array $p)
+    {
+        list($x, $y) = $p;
+        $lhs = $y->multiply($y);
+        $temp = $x->multiply($this->a);
+        $temp = $x->multiply($x)->multiply($x)->add($temp);
+        $rhs = $temp->add($this->b);
+
+        return $lhs->equals($rhs);
+    }
+
+    /**
+     * Returns the modulo
+     *
+     * @return \phpseclib3\Math\BigInteger
+     */
+    public function getModulo()
+    {
+        return $this->modulo;
+    }
+
+    /**
+     * Returns the a coefficient
+     *
+     * @return \phpseclib3\Math\PrimeField\Integer
+     */
+    public function getA()
+    {
+        return $this->a;
+    }
+
+    /**
+     * Returns the a coefficient
+     *
+     * @return \phpseclib3\Math\PrimeField\Integer
+     */
+    public function getB()
+    {
+        return $this->b;
+    }
+
+    /**
+     * Multiply and Add Points
+     *
+     * Adapted from:
+     * https://github.com/indutny/elliptic/blob/725bd91/lib/elliptic/curve/base.js#L125
+     *
+     * @return int[]
+     */
+    public function multiplyAddPoints(array $points, array $scalars)
+    {
+        $length = count($points);
+
+        foreach ($points as &$point) {
+            $point = $this->convertToInternal($point);
+        }
+
+        $wnd = [$this->getNAFPoints($points[0], 7)];
+        $wndWidth = [isset($points[0]['nafwidth']) ? $points[0]['nafwidth'] : 7];
+        for ($i = 1; $i < $length; $i++) {
+            $wnd[] = $this->getNAFPoints($points[$i], 1);
+            $wndWidth[] = isset($points[$i]['nafwidth']) ? $points[$i]['nafwidth'] : 1;
+        }
+
+        $naf = [];
+
+        // comb all window NAFs
+
+        $max = 0;
+        for ($i = $length - 1; $i >= 1; $i -= 2) {
+            $a = $i - 1;
+            $b = $i;
+            if ($wndWidth[$a] != 1 || $wndWidth[$b] != 1) {
+                $naf[$a] = $scalars[$a]->getNAF($wndWidth[$a]);
+                $naf[$b] = $scalars[$b]->getNAF($wndWidth[$b]);
+                $max = max(count($naf[$a]), count($naf[$b]), $max);
+                continue;
+            }
+
+            $comb = [
+                $points[$a], // 1
+                null,        // 3
+                null,        // 5
+                $points[$b]  // 7
+            ];
+
+            $comb[1] = $this->addPoint($points[$a], $points[$b]);
+            $comb[2] = $this->addPoint($points[$a], $this->negatePoint($points[$b]));
+
+            $index = [
+                -3, /* -1 -1 */
+                -1, /* -1  0 */
+                -5, /* -1  1 */
+                -7, /*  0 -1 */
+                 0, /*  0 -1 */
+                 7, /*  0  1 */
+                 5, /*  1 -1 */
+                 1, /*  1  0 */
+                 3  /*  1  1 */
+            ];
+
+            $jsf = self::getJSFPoints($scalars[$a], $scalars[$b]);
+
+            $max = max(count($jsf[0]), $max);
+            if ($max > 0) {
+                $naf[$a] = array_fill(0, $max, 0);
+                $naf[$b] = array_fill(0, $max, 0);
+            } else {
+                $naf[$a] = [];
+                $naf[$b] = [];
+            }
+
+            for ($j = 0; $j < $max; $j++) {
+                $ja = isset($jsf[0][$j]) ? $jsf[0][$j] : 0;
+                $jb = isset($jsf[1][$j]) ? $jsf[1][$j] : 0;
+
+                $naf[$a][$j] = $index[3 * ($ja + 1) + $jb + 1];
+                $naf[$b][$j] = 0;
+                $wnd[$a] = $comb;
+            }
+        }
+
+        $acc = [];
+        $temp = [0, 0, 0, 0];
+        for ($i = $max; $i >= 0; $i--) {
+            $k = 0;
+            while ($i >= 0) {
+                $zero = true;
+                for ($j = 0; $j < $length; $j++) {
+                    $temp[$j] = isset($naf[$j][$i]) ? $naf[$j][$i] : 0;
+                    if ($temp[$j] != 0) {
+                        $zero = false;
+                    }
+                }
+                if (!$zero) {
+                    break;
+                }
+                $k++;
+                $i--;
+            }
+
+            if ($i >= 0) {
+                $k++;
+            }
+            while ($k--) {
+                $acc = $this->doublePoint($acc);
+            }
+
+            if ($i < 0) {
+                break;
+            }
+
+            for ($j = 0; $j < $length; $j++) {
+                $z = $temp[$j];
+                $p = null;
+                if ($z == 0) {
+                    continue;
+                }
+                $p = $z > 0 ?
+                    $wnd[$j][($z - 1) >> 1] :
+                    $this->negatePoint($wnd[$j][(-$z - 1) >> 1]);
+                $acc = $this->addPoint($acc, $p);
+            }
+        }
+
+        return $this->convertToAffine($acc);
+    }
+
+    /**
+     * Precomputes NAF points
+     *
+     * Adapted from:
+     * https://github.com/indutny/elliptic/blob/725bd91/lib/elliptic/curve/base.js#L351
+     *
+     * @return int[]
+     */
+    private function getNAFPoints(array $point, $wnd)
+    {
+        if (isset($point['naf'])) {
+            return $point['naf'];
+        }
+
+        $res = [$point];
+        $max = (1 << $wnd) - 1;
+        $dbl = $max == 1 ? null : $this->doublePoint($point);
+        for ($i = 1; $i < $max; $i++) {
+            $res[] = $this->addPoint($res[$i - 1], $dbl);
+        }
+
+        $point['naf'] = $res;
+
+        /*
+        $str = '';
+        foreach ($res as $re) {
+            $re[0] = bin2hex($re[0]->toBytes());
+            $re[1] = bin2hex($re[1]->toBytes());
+            $str.= "            ['$re[0]', '$re[1]'],\r\n";
+        }
+        file_put_contents('temp.txt', $str);
+        exit;
+        */
+
+        return $res;
+    }
+
+    /**
+     * Precomputes points in Joint Sparse Form
+     *
+     * Adapted from:
+     * https://github.com/indutny/elliptic/blob/725bd91/lib/elliptic/utils.js#L96
+     *
+     * @return int[]
+     */
+    private static function getJSFPoints(Integer $k1, Integer $k2)
+    {
+        static $three;
+        if (!isset($three)) {
+            $three = new BigInteger(3);
+        }
+
+        $jsf = [[], []];
+        $k1 = $k1->toBigInteger();
+        $k2 = $k2->toBigInteger();
+        $d1 = 0;
+        $d2 = 0;
+
+        while ($k1->compare(new BigInteger(-$d1)) > 0 || $k2->compare(new BigInteger(-$d2)) > 0) {
+            // first phase
+            $m14 = $k1->testBit(0) + 2 * $k1->testBit(1);
+            $m14 += $d1;
+            $m14 &= 3;
+
+            $m24 = $k2->testBit(0) + 2 * $k2->testBit(1);
+            $m24 += $d2;
+            $m24 &= 3;
+
+            if ($m14 == 3) {
+                $m14 = -1;
+            }
+            if ($m24 == 3) {
+                $m24 = -1;
+            }
+
+            $u1 = 0;
+            if ($m14 & 1) { // if $m14 is odd
+                $m8 = $k1->testBit(0) + 2 * $k1->testBit(1) + 4 * $k1->testBit(2);
+                $m8 += $d1;
+                $m8 &= 7;
+                $u1 = ($m8 == 3 || $m8 == 5) && $m24 == 2 ? -$m14 : $m14;
+            }
+            $jsf[0][] = $u1;
+
+            $u2 = 0;
+            if ($m24 & 1) { // if $m24 is odd
+                $m8 = $k2->testBit(0) + 2 * $k2->testBit(1) + 4 * $k2->testBit(2);
+                $m8 += $d2;
+                $m8 &= 7;
+                $u2 = ($m8 == 3 || $m8 == 5) && $m14 == 2 ? -$m24 : $m24;
+            }
+            $jsf[1][] = $u2;
+
+            // second phase
+            if (2 * $d1 == $u1 + 1) {
+                $d1 = 1 - $d1;
+            }
+            if (2 * $d2 == $u2 + 1) {
+                $d2 = 1 - $d2;
+            }
+            $k1 = $k1->bitwise_rightShift(1);
+            $k2 = $k2->bitwise_rightShift(1);
+        }
+
+        return $jsf;
+    }
+
+    /**
+     * Returns the affine point
+     *
+     * A Jacobian Coordinate is of the form (x, y, z).
+     * To convert a Jacobian Coordinate to an Affine Point
+     * you do (x / z^2, y / z^3)
+     *
+     * @return \phpseclib3\Math\PrimeField\Integer[]
+     */
+    public function convertToAffine(array $p)
+    {
+        if (!isset($p[2])) {
+            return $p;
+        }
+        list($x, $y, $z) = $p;
+        $z = $this->one->divide($z);
+        $z2 = $z->multiply($z);
+        return [
+            $x->multiply($z2),
+            $y->multiply($z2)->multiply($z)
+        ];
+    }
+
+    /**
+     * Converts an affine point to a jacobian coordinate
+     *
+     * @return \phpseclib3\Math\PrimeField\Integer[]
+     */
+    public function convertToInternal(array $p)
+    {
+        if (isset($p[2])) {
+            return $p;
+        }
+
+        $p[2] = clone $this->one;
+        $p['fresh'] = true;
+        return $p;
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/BaseCurves/TwistedEdwards.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/BaseCurves/TwistedEdwards.php
new file mode 100644
index 0000000..2521a4c
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/BaseCurves/TwistedEdwards.php
@@ -0,0 +1,215 @@
+<?php
+
+/**
+ * Curves over a*x^2 + y^2 = 1 + d*x^2*y^2
+ *
+ * http://www.secg.org/SEC2-Ver-1.0.pdf provides for curves with custom parameters.
+ * ie. the coefficients can be arbitrary set through specially formatted keys, etc.
+ * As such, Prime.php is built very generically and it's not able to take full
+ * advantage of curves with 0 coefficients to produce simplified point doubling,
+ * point addition. Twisted Edwards curves, in contrast, do not have a way, currently,
+ * to customize them. As such, we can omit the super generic stuff from this class
+ * and let the named curves (Ed25519 and Ed448) define their own custom tailored
+ * point addition and point doubling methods.
+ *
+ * More info:
+ *
+ * https://en.wikipedia.org/wiki/Twisted_Edwards_curve
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\BaseCurves;
+
+use phpseclib3\Math\BigInteger;
+use phpseclib3\Math\PrimeField;
+use phpseclib3\Math\PrimeField\Integer as PrimeInteger;
+
+/**
+ * Curves over a*x^2 + y^2 = 1 + d*x^2*y^2
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+class TwistedEdwards extends Base
+{
+    /**
+     * The modulo
+     *
+     * @var BigInteger
+     */
+    protected $modulo;
+
+    /**
+     * Cofficient for x^2
+     *
+     * @var object
+     */
+    protected $a;
+
+    /**
+     * Cofficient for x^2*y^2
+     *
+     * @var object
+     */
+    protected $d;
+
+    /**
+     * Base Point
+     *
+     * @var object[]
+     */
+    protected $p;
+
+    /**
+     * The number zero over the specified finite field
+     *
+     * @var object
+     */
+    protected $zero;
+
+    /**
+     * The number one over the specified finite field
+     *
+     * @var object
+     */
+    protected $one;
+
+    /**
+     * The number two over the specified finite field
+     *
+     * @var object
+     */
+    protected $two;
+
+    /**
+     * Sets the modulo
+     */
+    public function setModulo(BigInteger $modulo)
+    {
+        $this->modulo = $modulo;
+        $this->factory = new PrimeField($modulo);
+        $this->zero = $this->factory->newInteger(new BigInteger(0));
+        $this->one = $this->factory->newInteger(new BigInteger(1));
+        $this->two = $this->factory->newInteger(new BigInteger(2));
+    }
+
+    /**
+     * Set coefficients a and b
+     */
+    public function setCoefficients(BigInteger $a, BigInteger $d)
+    {
+        if (!isset($this->factory)) {
+            throw new \RuntimeException('setModulo needs to be called before this method');
+        }
+        $this->a = $this->factory->newInteger($a);
+        $this->d = $this->factory->newInteger($d);
+    }
+
+    /**
+     * Set x and y coordinates for the base point
+     */
+    public function setBasePoint($x, $y)
+    {
+        switch (true) {
+            case !$x instanceof BigInteger && !$x instanceof PrimeInteger:
+                throw new \UnexpectedValueException('Argument 1 passed to Prime::setBasePoint() must be an instance of either BigInteger or PrimeField\Integer');
+            case !$y instanceof BigInteger && !$y instanceof PrimeInteger:
+                throw new \UnexpectedValueException('Argument 2 passed to Prime::setBasePoint() must be an instance of either BigInteger or PrimeField\Integer');
+        }
+        if (!isset($this->factory)) {
+            throw new \RuntimeException('setModulo needs to be called before this method');
+        }
+        $this->p = [
+            $x instanceof BigInteger ? $this->factory->newInteger($x) : $x,
+            $y instanceof BigInteger ? $this->factory->newInteger($y) : $y
+        ];
+    }
+
+    /**
+     * Returns the a coefficient
+     *
+     * @return \phpseclib3\Math\PrimeField\Integer
+     */
+    public function getA()
+    {
+        return $this->a;
+    }
+
+    /**
+     * Returns the a coefficient
+     *
+     * @return \phpseclib3\Math\PrimeField\Integer
+     */
+    public function getD()
+    {
+        return $this->d;
+    }
+
+    /**
+     * Retrieve the base point as an array
+     *
+     * @return array
+     */
+    public function getBasePoint()
+    {
+        if (!isset($this->factory)) {
+            throw new \RuntimeException('setModulo needs to be called before this method');
+        }
+        /*
+        if (!isset($this->p)) {
+            throw new \RuntimeException('setBasePoint needs to be called before this method');
+        }
+        */
+        return $this->p;
+    }
+
+    /**
+     * Returns the affine point
+     *
+     * @return \phpseclib3\Math\PrimeField\Integer[]
+     */
+    public function convertToAffine(array $p)
+    {
+        if (!isset($p[2])) {
+            return $p;
+        }
+        list($x, $y, $z) = $p;
+        $z = $this->one->divide($z);
+        return [
+            $x->multiply($z),
+            $y->multiply($z)
+        ];
+    }
+
+    /**
+     * Returns the modulo
+     *
+     * @return \phpseclib3\Math\BigInteger
+     */
+    public function getModulo()
+    {
+        return $this->modulo;
+    }
+
+    /**
+     * Tests whether or not the x / y values satisfy the equation
+     *
+     * @return boolean
+     */
+    public function verifyPoint(array $p)
+    {
+        list($x, $y) = $p;
+        $x2 = $x->multiply($x);
+        $y2 = $y->multiply($y);
+
+        $lhs = $this->a->multiply($x2)->add($y2);
+        $rhs = $this->d->multiply($x2)->multiply($y2)->add($this->one);
+
+        return $lhs->equals($rhs);
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/Curve25519.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/Curve25519.php
new file mode 100644
index 0000000..0f3f4d8
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/Curve25519.php
@@ -0,0 +1,81 @@
+<?php
+
+/**
+ * Curve25519
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2019 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Montgomery;
+use phpseclib3\Math\BigInteger;
+
+class Curve25519 extends Montgomery
+{
+    public function __construct()
+    {
+        // 2^255 - 19
+        $this->setModulo(new BigInteger('7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFED', 16));
+        $this->a24 = $this->factory->newInteger(new BigInteger('121666'));
+        $this->p = [$this->factory->newInteger(new BigInteger(9))];
+        // 2^252 + 0x14def9dea2f79cd65812631a5cf5d3ed
+        $this->setOrder(new BigInteger('1000000000000000000000000000000014DEF9DEA2F79CD65812631A5CF5D3ED', 16));
+
+        /*
+        $this->setCoefficients(
+            new BigInteger('486662'), // a
+        );
+        $this->setBasePoint(
+            new BigInteger(9),
+            new BigInteger('14781619447589544791020593568409986887264606134616475288964881837755586237401')
+        );
+        */
+    }
+
+    /**
+     * Multiply a point on the curve by a scalar
+     *
+     * Modifies the scalar as described at https://tools.ietf.org/html/rfc7748#page-8
+     *
+     * @return array
+     */
+    public function multiplyPoint(array $p, BigInteger $d)
+    {
+        //$r = strrev(sodium_crypto_scalarmult($d->toBytes(), strrev($p[0]->toBytes())));
+        //return [$this->factory->newInteger(new BigInteger($r, 256))];
+
+        $d = $d->toBytes();
+        $d &= "\xF8" . str_repeat("\xFF", 30) . "\x7F";
+        $d = strrev($d);
+        $d |= "\x40";
+        $d = new BigInteger($d, -256);
+
+        return parent::multiplyPoint($p, $d);
+    }
+
+    /**
+     * Creates a random scalar multiplier
+     *
+     * @return BigInteger
+     */
+    public function createRandomMultiplier()
+    {
+        return BigInteger::random(256);
+    }
+
+    /**
+     * Performs range check
+     */
+    public function rangeCheck(BigInteger $x)
+    {
+        if ($x->getLength() > 256 || $x->isNegative()) {
+            throw new \RangeException('x must be a positive integer less than 256 bytes in length');
+        }
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/Curve448.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/Curve448.php
new file mode 100644
index 0000000..f4a4423
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/Curve448.php
@@ -0,0 +1,92 @@
+<?php
+
+/**
+ * Curve448
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2019 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Montgomery;
+use phpseclib3\Math\BigInteger;
+
+class Curve448 extends Montgomery
+{
+    public function __construct()
+    {
+        // 2^448 - 2^224 - 1
+        $this->setModulo(new BigInteger(
+            'FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFE' .
+            'FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF',
+            16
+        ));
+        $this->a24 = $this->factory->newInteger(new BigInteger('39081'));
+        $this->p = [$this->factory->newInteger(new BigInteger(5))];
+        // 2^446 - 0x8335dc163bb124b65129c96fde933d8d723a70aadc873d6d54a7bb0d
+        $this->setOrder(new BigInteger(
+            '3FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF' .
+            '7CCA23E9C44EDB49AED63690216CC2728DC58F552378C292AB5844F3',
+            16
+        ));
+
+        /*
+        $this->setCoefficients(
+            new BigInteger('156326'), // a
+        );
+        $this->setBasePoint(
+            new BigInteger(5),
+            new BigInteger(
+                '355293926785568175264127502063783334808976399387714271831880898' .
+                '435169088786967410002932673765864550910142774147268105838985595290' .
+                '606362')
+        );
+        */
+    }
+
+    /**
+     * Multiply a point on the curve by a scalar
+     *
+     * Modifies the scalar as described at https://tools.ietf.org/html/rfc7748#page-8
+     *
+     * @return array
+     */
+    public function multiplyPoint(array $p, BigInteger $d)
+    {
+        //$r = strrev(sodium_crypto_scalarmult($d->toBytes(), strrev($p[0]->toBytes())));
+        //return [$this->factory->newInteger(new BigInteger($r, 256))];
+
+        $d = $d->toBytes();
+        $d[0] = $d[0] & "\xFC";
+        $d = strrev($d);
+        $d |= "\x80";
+        $d = new BigInteger($d, 256);
+
+        return parent::multiplyPoint($p, $d);
+    }
+
+    /**
+     * Creates a random scalar multiplier
+     *
+     * @return BigInteger
+     */
+    public function createRandomMultiplier()
+    {
+        return BigInteger::random(446);
+    }
+
+    /**
+     * Performs range check
+     */
+    public function rangeCheck(BigInteger $x)
+    {
+        if ($x->getLength() > 448 || $x->isNegative()) {
+            throw new \RangeException('x must be a positive integer less than 446 bytes in length');
+        }
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/Ed25519.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/Ed25519.php
new file mode 100644
index 0000000..9d3de68
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/Ed25519.php
@@ -0,0 +1,333 @@
+<?php
+
+/**
+ * Ed25519
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\TwistedEdwards;
+use phpseclib3\Crypt\Hash;
+use phpseclib3\Crypt\Random;
+use phpseclib3\Math\BigInteger;
+
+class Ed25519 extends TwistedEdwards
+{
+    const HASH = 'sha512';
+    /*
+      Per https://tools.ietf.org/html/rfc8032#page-6 EdDSA has several parameters, one of which is b:
+
+      2.   An integer b with 2^(b-1) > p.  EdDSA public keys have exactly b
+           bits, and EdDSA signatures have exactly 2*b bits.  b is
+           recommended to be a multiple of 8, so public key and signature
+           lengths are an integral number of octets.
+
+      SIZE corresponds to b
+    */
+    const SIZE = 32;
+
+    public function __construct()
+    {
+        // 2^255 - 19
+        $this->setModulo(new BigInteger('7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFED', 16));
+        $this->setCoefficients(
+            // -1
+            new BigInteger('7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEC', 16), // a
+            // -121665/121666
+            new BigInteger('52036CEE2B6FFE738CC740797779E89800700A4D4141D8AB75EB4DCA135978A3', 16)  // d
+        );
+        $this->setBasePoint(
+            new BigInteger('216936D3CD6E53FEC0A4E231FDD6DC5C692CC7609525A7B2C9562D608F25D51A', 16),
+            new BigInteger('6666666666666666666666666666666666666666666666666666666666666658', 16)
+        );
+        $this->setOrder(new BigInteger('1000000000000000000000000000000014DEF9DEA2F79CD65812631A5CF5D3ED', 16));
+        // algorithm 14.47 from http://cacr.uwaterloo.ca/hac/about/chap14.pdf#page=16
+        /*
+        $this->setReduction(function($x) {
+            $parts = $x->bitwise_split(255);
+            $className = $this->className;
+
+            if (count($parts) > 2) {
+                list(, $r) = $x->divide($className::$modulo);
+                return $r;
+            }
+
+            $zero = new BigInteger();
+            $c = new BigInteger(19);
+
+            switch (count($parts)) {
+                case 2:
+                    list($qi, $ri) = $parts;
+                    break;
+                case 1:
+                    $qi = $zero;
+                    list($ri) = $parts;
+                    break;
+                case 0:
+                    return $zero;
+            }
+            $r = $ri;
+
+            while ($qi->compare($zero) > 0) {
+                $temp = $qi->multiply($c)->bitwise_split(255);
+                if (count($temp) == 2) {
+                    list($qi, $ri) = $temp;
+                } else {
+                    $qi = $zero;
+                    list($ri) = $temp;
+                }
+                $r = $r->add($ri);
+            }
+
+            while ($r->compare($className::$modulo) > 0) {
+                $r = $r->subtract($className::$modulo);
+            }
+            return $r;
+        });
+        */
+    }
+
+    /**
+     * Recover X from Y
+     *
+     * Implements steps 2-4 at https://tools.ietf.org/html/rfc8032#section-5.1.3
+     *
+     * Used by EC\Keys\Common.php
+     *
+     * @param BigInteger $y
+     * @param boolean $sign
+     * @return object[]
+     */
+    public function recoverX(BigInteger $y, $sign)
+    {
+        $y = $this->factory->newInteger($y);
+
+        $y2 = $y->multiply($y);
+        $u = $y2->subtract($this->one);
+        $v = $this->d->multiply($y2)->add($this->one);
+        $x2 = $u->divide($v);
+        if ($x2->equals($this->zero)) {
+            if ($sign) {
+                throw new \RuntimeException('Unable to recover X coordinate (x2 = 0)');
+            }
+            return clone $this->zero;
+        }
+        // find the square root
+        /* we don't do $x2->squareRoot() because, quoting from
+           https://tools.ietf.org/html/rfc8032#section-5.1.1:
+
+           "For point decoding or "decompression", square roots modulo p are
+            needed.  They can be computed using the Tonelli-Shanks algorithm or
+            the special case for p = 5 (mod 8).  To find a square root of a,
+            first compute the candidate root x = a^((p+3)/8) (mod p)."
+         */
+        $exp = $this->getModulo()->add(new BigInteger(3));
+        $exp = $exp->bitwise_rightShift(3);
+        $x = $x2->pow($exp);
+
+        // If v x^2 = -u (mod p), set x <-- x * 2^((p-1)/4), which is a square root.
+        if (!$x->multiply($x)->subtract($x2)->equals($this->zero)) {
+            $temp = $this->getModulo()->subtract(new BigInteger(1));
+            $temp = $temp->bitwise_rightShift(2);
+            $temp = $this->two->pow($temp);
+            $x = $x->multiply($temp);
+            if (!$x->multiply($x)->subtract($x2)->equals($this->zero)) {
+                throw new \RuntimeException('Unable to recover X coordinate');
+            }
+        }
+        if ($x->isOdd() != $sign) {
+            $x = $x->negate();
+        }
+
+        return [$x, $y];
+    }
+
+    /**
+     * Extract Secret Scalar
+     *
+     * Implements steps 1-3 at https://tools.ietf.org/html/rfc8032#section-5.1.5
+     *
+     * Used by the various key handlers
+     *
+     * @param string $str
+     * @return array
+     */
+    public function extractSecret($str)
+    {
+        if (strlen($str) != 32) {
+            throw new \LengthException('Private Key should be 32-bytes long');
+        }
+        // 1.  Hash the 32-byte private key using SHA-512, storing the digest in
+        //     a 64-octet large buffer, denoted h.  Only the lower 32 bytes are
+        //     used for generating the public key.
+        $hash = new Hash('sha512');
+        $h = $hash->hash($str);
+        $h = substr($h, 0, 32);
+        // 2.  Prune the buffer: The lowest three bits of the first octet are
+        //     cleared, the highest bit of the last octet is cleared, and the
+        //     second highest bit of the last octet is set.
+        $h[0] = $h[0] & chr(0xF8);
+        $h = strrev($h);
+        $h[0] = ($h[0] & chr(0x3F)) | chr(0x40);
+        // 3.  Interpret the buffer as the little-endian integer, forming a
+        //     secret scalar s.
+        $dA = new BigInteger($h, 256);
+
+        return [
+            'dA' => $dA,
+            'secret' => $str
+        ];
+    }
+
+    /**
+     * Encode a point as a string
+     *
+     * @param array $point
+     * @return string
+     */
+    public function encodePoint($point)
+    {
+        list($x, $y) = $point;
+        $y = $y->toBytes();
+        $y[0] = $y[0] & chr(0x7F);
+        if ($x->isOdd()) {
+            $y[0] = $y[0] | chr(0x80);
+        }
+        $y = strrev($y);
+
+        return $y;
+    }
+
+    /**
+     * Creates a random scalar multiplier
+     *
+     * @return \phpseclib3\Math\PrimeField\Integer
+     */
+    public function createRandomMultiplier()
+    {
+        return $this->extractSecret(Random::string(32))['dA'];
+    }
+
+    /**
+     * Converts an affine point to an extended homogeneous coordinate
+     *
+     * From https://tools.ietf.org/html/rfc8032#section-5.1.4 :
+     *
+     * A point (x,y) is represented in extended homogeneous coordinates (X, Y, Z, T),
+     * with x = X/Z, y = Y/Z, x * y = T/Z.
+     *
+     * @return \phpseclib3\Math\PrimeField\Integer[]
+     */
+    public function convertToInternal(array $p)
+    {
+        if (empty($p)) {
+            return [clone $this->zero, clone $this->one, clone $this->one, clone $this->zero];
+        }
+
+        if (isset($p[2])) {
+            return $p;
+        }
+
+        $p[2] = clone $this->one;
+        $p[3] = $p[0]->multiply($p[1]);
+
+        return $p;
+    }
+
+    /**
+     * Doubles a point on a curve
+     *
+     * @return FiniteField[]
+     */
+    public function doublePoint(array $p)
+    {
+        if (!isset($this->factory)) {
+            throw new \RuntimeException('setModulo needs to be called before this method');
+        }
+
+        if (!count($p)) {
+            return [];
+        }
+
+        if (!isset($p[2])) {
+            throw new \RuntimeException('Affine coordinates need to be manually converted to "Jacobi" coordinates or vice versa');
+        }
+
+        // from https://tools.ietf.org/html/rfc8032#page-12
+
+        list($x1, $y1, $z1, $t1) = $p;
+
+        $a = $x1->multiply($x1);
+        $b = $y1->multiply($y1);
+        $c = $this->two->multiply($z1)->multiply($z1);
+        $h = $a->add($b);
+        $temp = $x1->add($y1);
+        $e = $h->subtract($temp->multiply($temp));
+        $g = $a->subtract($b);
+        $f = $c->add($g);
+
+        $x3 = $e->multiply($f);
+        $y3 = $g->multiply($h);
+        $t3 = $e->multiply($h);
+        $z3 = $f->multiply($g);
+
+        return [$x3, $y3, $z3, $t3];
+    }
+
+    /**
+     * Adds two points on the curve
+     *
+     * @return FiniteField[]
+     */
+    public function addPoint(array $p, array $q)
+    {
+        if (!isset($this->factory)) {
+            throw new \RuntimeException('setModulo needs to be called before this method');
+        }
+
+        if (!count($p) || !count($q)) {
+            if (count($q)) {
+                return $q;
+            }
+            if (count($p)) {
+                return $p;
+            }
+            return [];
+        }
+
+        if (!isset($p[2]) || !isset($q[2])) {
+            throw new \RuntimeException('Affine coordinates need to be manually converted to "Jacobi" coordinates or vice versa');
+        }
+
+        if ($p[0]->equals($q[0])) {
+            return !$p[1]->equals($q[1]) ? [] : $this->doublePoint($p);
+        }
+
+        // from https://tools.ietf.org/html/rfc8032#page-12
+
+        list($x1, $y1, $z1, $t1) = $p;
+        list($x2, $y2, $z2, $t2) = $q;
+
+        $a = $y1->subtract($x1)->multiply($y2->subtract($x2));
+        $b = $y1->add($x1)->multiply($y2->add($x2));
+        $c = $t1->multiply($this->two)->multiply($this->d)->multiply($t2);
+        $d = $z1->multiply($this->two)->multiply($z2);
+        $e = $b->subtract($a);
+        $f = $d->subtract($c);
+        $g = $d->add($c);
+        $h = $b->add($a);
+
+        $x3 = $e->multiply($f);
+        $y3 = $g->multiply($h);
+        $t3 = $e->multiply($h);
+        $z3 = $f->multiply($g);
+
+        return [$x3, $y3, $z3, $t3];
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/Ed448.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/Ed448.php
new file mode 100644
index 0000000..5451f90
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/Ed448.php
@@ -0,0 +1,273 @@
+<?php
+
+/**
+ * Ed448
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\TwistedEdwards;
+use phpseclib3\Crypt\Hash;
+use phpseclib3\Crypt\Random;
+use phpseclib3\Math\BigInteger;
+
+class Ed448 extends TwistedEdwards
+{
+    const HASH = 'shake256-912';
+    const SIZE = 57;
+
+    public function __construct()
+    {
+        // 2^448 - 2^224 - 1
+        $this->setModulo(new BigInteger(
+            'FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFE' .
+            'FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF',
+            16
+        ));
+        $this->setCoefficients(
+            new BigInteger(1),
+            // -39081
+            new BigInteger('FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFE' .
+                           'FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF6756', 16)
+        );
+        $this->setBasePoint(
+            new BigInteger('4F1970C66BED0DED221D15A622BF36DA9E146570470F1767EA6DE324' .
+                           'A3D3A46412AE1AF72AB66511433B80E18B00938E2626A82BC70CC05E', 16),
+            new BigInteger('693F46716EB6BC248876203756C9C7624BEA73736CA3984087789C1E' .
+                           '05A0C2D73AD3FF1CE67C39C4FDBD132C4ED7C8AD9808795BF230FA14', 16)
+        );
+        $this->setOrder(new BigInteger(
+            '3FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF' .
+            '7CCA23E9C44EDB49AED63690216CC2728DC58F552378C292AB5844F3',
+            16
+        ));
+    }
+
+    /**
+     * Recover X from Y
+     *
+     * Implements steps 2-4 at https://tools.ietf.org/html/rfc8032#section-5.2.3
+     *
+     * Used by EC\Keys\Common.php
+     *
+     * @param BigInteger $y
+     * @param boolean $sign
+     * @return object[]
+     */
+    public function recoverX(BigInteger $y, $sign)
+    {
+        $y = $this->factory->newInteger($y);
+
+        $y2 = $y->multiply($y);
+        $u = $y2->subtract($this->one);
+        $v = $this->d->multiply($y2)->subtract($this->one);
+        $x2 = $u->divide($v);
+        if ($x2->equals($this->zero)) {
+            if ($sign) {
+                throw new \RuntimeException('Unable to recover X coordinate (x2 = 0)');
+            }
+            return clone $this->zero;
+        }
+        // find the square root
+        $exp = $this->getModulo()->add(new BigInteger(1));
+        $exp = $exp->bitwise_rightShift(2);
+        $x = $x2->pow($exp);
+
+        if (!$x->multiply($x)->subtract($x2)->equals($this->zero)) {
+            throw new \RuntimeException('Unable to recover X coordinate');
+        }
+        if ($x->isOdd() != $sign) {
+            $x = $x->negate();
+        }
+
+        return [$x, $y];
+    }
+
+    /**
+     * Extract Secret Scalar
+     *
+     * Implements steps 1-3 at https://tools.ietf.org/html/rfc8032#section-5.2.5
+     *
+     * Used by the various key handlers
+     *
+     * @param string $str
+     * @return array
+     */
+    public function extractSecret($str)
+    {
+        if (strlen($str) != 57) {
+            throw new \LengthException('Private Key should be 57-bytes long');
+        }
+        // 1.  Hash the 57-byte private key using SHAKE256(x, 114), storing the
+        //     digest in a 114-octet large buffer, denoted h.  Only the lower 57
+        //     bytes are used for generating the public key.
+        $hash = new Hash('shake256-912');
+        $h = $hash->hash($str);
+        $h = substr($h, 0, 57);
+        // 2.  Prune the buffer: The two least significant bits of the first
+        //     octet are cleared, all eight bits the last octet are cleared, and
+        //     the highest bit of the second to last octet is set.
+        $h[0] = $h[0] & chr(0xFC);
+        $h = strrev($h);
+        $h[0] = "\0";
+        $h[1] = $h[1] | chr(0x80);
+        // 3.  Interpret the buffer as the little-endian integer, forming a
+        //     secret scalar s.
+        $dA = new BigInteger($h, 256);
+
+        return [
+            'dA' => $dA,
+            'secret' => $str
+        ];
+
+        $dA->secret = $str;
+        return $dA;
+    }
+
+    /**
+     * Encode a point as a string
+     *
+     * @param array $point
+     * @return string
+     */
+    public function encodePoint($point)
+    {
+        list($x, $y) = $point;
+        $y = "\0" . $y->toBytes();
+        if ($x->isOdd()) {
+            $y[0] = $y[0] | chr(0x80);
+        }
+        $y = strrev($y);
+
+        return $y;
+    }
+
+    /**
+     * Creates a random scalar multiplier
+     *
+     * @return \phpseclib3\Math\PrimeField\Integer
+     */
+    public function createRandomMultiplier()
+    {
+        return $this->extractSecret(Random::string(57))['dA'];
+    }
+
+    /**
+     * Converts an affine point to an extended homogeneous coordinate
+     *
+     * From https://tools.ietf.org/html/rfc8032#section-5.2.4 :
+     *
+     * A point (x,y) is represented in extended homogeneous coordinates (X, Y, Z, T),
+     * with x = X/Z, y = Y/Z, x * y = T/Z.
+     *
+     * @return \phpseclib3\Math\PrimeField\Integer[]
+     */
+    public function convertToInternal(array $p)
+    {
+        if (empty($p)) {
+            return [clone $this->zero, clone $this->one, clone $this->one];
+        }
+
+        if (isset($p[2])) {
+            return $p;
+        }
+
+        $p[2] = clone $this->one;
+
+        return $p;
+    }
+
+    /**
+     * Doubles a point on a curve
+     *
+     * @return FiniteField[]
+     */
+    public function doublePoint(array $p)
+    {
+        if (!isset($this->factory)) {
+            throw new \RuntimeException('setModulo needs to be called before this method');
+        }
+
+        if (!count($p)) {
+            return [];
+        }
+
+        if (!isset($p[2])) {
+            throw new \RuntimeException('Affine coordinates need to be manually converted to "Jacobi" coordinates or vice versa');
+        }
+
+        // from https://tools.ietf.org/html/rfc8032#page-18
+
+        list($x1, $y1, $z1) = $p;
+
+        $b = $x1->add($y1);
+        $b = $b->multiply($b);
+        $c = $x1->multiply($x1);
+        $d = $y1->multiply($y1);
+        $e = $c->add($d);
+        $h = $z1->multiply($z1);
+        $j = $e->subtract($this->two->multiply($h));
+
+        $x3 = $b->subtract($e)->multiply($j);
+        $y3 = $c->subtract($d)->multiply($e);
+        $z3 = $e->multiply($j);
+
+        return [$x3, $y3, $z3];
+    }
+
+    /**
+     * Adds two points on the curve
+     *
+     * @return FiniteField[]
+     */
+    public function addPoint(array $p, array $q)
+    {
+        if (!isset($this->factory)) {
+            throw new \RuntimeException('setModulo needs to be called before this method');
+        }
+
+        if (!count($p) || !count($q)) {
+            if (count($q)) {
+                return $q;
+            }
+            if (count($p)) {
+                return $p;
+            }
+            return [];
+        }
+
+        if (!isset($p[2]) || !isset($q[2])) {
+            throw new \RuntimeException('Affine coordinates need to be manually converted to "Jacobi" coordinates or vice versa');
+        }
+
+        if ($p[0]->equals($q[0])) {
+            return !$p[1]->equals($q[1]) ? [] : $this->doublePoint($p);
+        }
+
+        // from https://tools.ietf.org/html/rfc8032#page-17
+
+        list($x1, $y1, $z1) = $p;
+        list($x2, $y2, $z2) = $q;
+
+        $a = $z1->multiply($z2);
+        $b = $a->multiply($a);
+        $c = $x1->multiply($x2);
+        $d = $y1->multiply($y2);
+        $e = $this->d->multiply($c)->multiply($d);
+        $f = $b->subtract($e);
+        $g = $b->add($e);
+        $h = $x1->add($y1)->multiply($x2->add($y2));
+
+        $x3 = $a->multiply($f)->multiply($h->subtract($c)->subtract($d));
+        $y3 = $a->multiply($g)->multiply($d->subtract($c));
+        $z3 = $f->multiply($g);
+
+        return [$x3, $y3, $z3];
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/brainpoolP160r1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/brainpoolP160r1.php
new file mode 100644
index 0000000..7bc2272
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/brainpoolP160r1.php
@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * brainpoolP160r1
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Prime;
+use phpseclib3\Math\BigInteger;
+
+class brainpoolP160r1 extends Prime
+{
+    public function __construct()
+    {
+        $this->setModulo(new BigInteger('E95E4A5F737059DC60DFC7AD95B3D8139515620F', 16));
+        $this->setCoefficients(
+            new BigInteger('340E7BE2A280EB74E2BE61BADA745D97E8F7C300', 16),
+            new BigInteger('1E589A8595423412134FAA2DBDEC95C8D8675E58', 16)
+        );
+        $this->setBasePoint(
+            new BigInteger('BED5AF16EA3F6A4F62938C4631EB5AF7BDBCDBC3', 16),
+            new BigInteger('1667CB477A1A8EC338F94741669C976316DA6321', 16)
+        );
+        $this->setOrder(new BigInteger('E95E4A5F737059DC60DF5991D45029409E60FC09', 16));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/brainpoolP160t1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/brainpoolP160t1.php
new file mode 100644
index 0000000..ebfb29a
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/brainpoolP160t1.php
@@ -0,0 +1,47 @@
+<?php
+
+/**
+ * brainpoolP160t1
+ *
+ * This curve is a twisted version of brainpoolP160r1 with A = -3. With brainpool,
+ * the curves ending in r1 are the "regular" curves and the curves ending in "t1"
+ * are the twisted version of the r1 curves. Per https://tools.ietf.org/html/rfc5639#page-7
+ * you can convert a point on an r1 curve to a point on a t1 curve thusly:
+ *
+ *     F(x,y) := (x*Z^2, y*Z^3)
+ *
+ * The advantage of A = -3 is that some of the point doubling and point addition can be
+ * slightly optimized. See http://hyperelliptic.org/EFD/g1p/auto-shortw-projective-3.html
+ * vs http://hyperelliptic.org/EFD/g1p/auto-shortw-projective.html for example.
+ *
+ * phpseclib does not currently take advantage of this optimization opportunity
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Prime;
+use phpseclib3\Math\BigInteger;
+
+class brainpoolP160t1 extends Prime
+{
+    public function __construct()
+    {
+        $this->setModulo(new BigInteger('E95E4A5F737059DC60DFC7AD95B3D8139515620F', 16));
+        $this->setCoefficients(
+            new BigInteger('E95E4A5F737059DC60DFC7AD95B3D8139515620C', 16), // eg. -3
+            new BigInteger('7A556B6DAE535B7B51ED2C4D7DAA7A0B5C55F380', 16)
+        );
+        $this->setBasePoint(
+            new BigInteger('B199B13B9B34EFC1397E64BAEB05ACC265FF2378', 16),
+            new BigInteger('ADD6718B7C7C1961F0991B842443772152C9E0AD', 16)
+        );
+        $this->setOrder(new BigInteger('E95E4A5F737059DC60DF5991D45029409E60FC09', 16));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/brainpoolP192r1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/brainpoolP192r1.php
new file mode 100644
index 0000000..6ec848b
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/brainpoolP192r1.php
@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * brainpoolP192r1
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Prime;
+use phpseclib3\Math\BigInteger;
+
+class brainpoolP192r1 extends Prime
+{
+    public function __construct()
+    {
+        $this->setModulo(new BigInteger('C302F41D932A36CDA7A3463093D18DB78FCE476DE1A86297', 16));
+        $this->setCoefficients(
+            new BigInteger('6A91174076B1E0E19C39C031FE8685C1CAE040E5C69A28EF', 16),
+            new BigInteger('469A28EF7C28CCA3DC721D044F4496BCCA7EF4146FBF25C9', 16)
+        );
+        $this->setBasePoint(
+            new BigInteger('C0A0647EAAB6A48753B033C56CB0F0900A2F5C4853375FD6', 16),
+            new BigInteger('14B690866ABD5BB88B5F4828C1490002E6773FA2FA299B8F', 16)
+        );
+        $this->setOrder(new BigInteger('C302F41D932A36CDA7A3462F9E9E916B5BE8F1029AC4ACC1', 16));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/brainpoolP192t1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/brainpoolP192t1.php
new file mode 100644
index 0000000..e6a86bb
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/brainpoolP192t1.php
@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * brainpoolP192t1
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Prime;
+use phpseclib3\Math\BigInteger;
+
+class brainpoolP192t1 extends Prime
+{
+    public function __construct()
+    {
+        $this->setModulo(new BigInteger('C302F41D932A36CDA7A3463093D18DB78FCE476DE1A86297', 16));
+        $this->setCoefficients(
+            new BigInteger('C302F41D932A36CDA7A3463093D18DB78FCE476DE1A86294', 16), // eg. -3
+            new BigInteger('13D56FFAEC78681E68F9DEB43B35BEC2FB68542E27897B79', 16)
+        );
+        $this->setBasePoint(
+            new BigInteger('3AE9E58C82F63C30282E1FE7BBF43FA72C446AF6F4618129', 16),
+            new BigInteger('097E2C5667C2223A902AB5CA449D0084B7E5B3DE7CCC01C9', 16)
+        );
+        $this->setOrder(new BigInteger('C302F41D932A36CDA7A3462F9E9E916B5BE8F1029AC4ACC1', 16));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/brainpoolP224r1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/brainpoolP224r1.php
new file mode 100644
index 0000000..3d7d872
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/brainpoolP224r1.php
@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * brainpoolP224r1
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Prime;
+use phpseclib3\Math\BigInteger;
+
+class brainpoolP224r1 extends Prime
+{
+    public function __construct()
+    {
+        $this->setModulo(new BigInteger('D7C134AA264366862A18302575D1D787B09F075797DA89F57EC8C0FF', 16));
+        $this->setCoefficients(
+            new BigInteger('68A5E62CA9CE6C1C299803A6C1530B514E182AD8B0042A59CAD29F43', 16),
+            new BigInteger('2580F63CCFE44138870713B1A92369E33E2135D266DBB372386C400B', 16)
+        );
+        $this->setBasePoint(
+            new BigInteger('0D9029AD2C7E5CF4340823B2A87DC68C9E4CE3174C1E6EFDEE12C07D', 16),
+            new BigInteger('58AA56F772C0726F24C6B89E4ECDAC24354B9E99CAA3F6D3761402CD', 16)
+        );
+        $this->setOrder(new BigInteger('D7C134AA264366862A18302575D0FB98D116BC4B6DDEBCA3A5A7939F', 16));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/brainpoolP224t1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/brainpoolP224t1.php
new file mode 100644
index 0000000..3d4f928
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/brainpoolP224t1.php
@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * brainpoolP224t1
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Prime;
+use phpseclib3\Math\BigInteger;
+
+class brainpoolP224t1 extends Prime
+{
+    public function __construct()
+    {
+        $this->setModulo(new BigInteger('D7C134AA264366862A18302575D1D787B09F075797DA89F57EC8C0FF', 16));
+        $this->setCoefficients(
+            new BigInteger('D7C134AA264366862A18302575D1D787B09F075797DA89F57EC8C0FC', 16), // eg. -3
+            new BigInteger('4B337D934104CD7BEF271BF60CED1ED20DA14C08B3BB64F18A60888D', 16)
+        );
+        $this->setBasePoint(
+            new BigInteger('6AB1E344CE25FF3896424E7FFE14762ECB49F8928AC0C76029B4D580', 16),
+            new BigInteger('0374E9F5143E568CD23F3F4D7C0D4B1E41C8CC0D1C6ABD5F1A46DB4C', 16)
+        );
+        $this->setOrder(new BigInteger('D7C134AA264366862A18302575D0FB98D116BC4B6DDEBCA3A5A7939F', 16));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/brainpoolP256r1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/brainpoolP256r1.php
new file mode 100644
index 0000000..5780da7
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/brainpoolP256r1.php
@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * brainpoolP256r1
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Prime;
+use phpseclib3\Math\BigInteger;
+
+class brainpoolP256r1 extends Prime
+{
+    public function __construct()
+    {
+        $this->setModulo(new BigInteger('A9FB57DBA1EEA9BC3E660A909D838D726E3BF623D52620282013481D1F6E5377', 16));
+        $this->setCoefficients(
+            new BigInteger('7D5A0975FC2C3057EEF67530417AFFE7FB8055C126DC5C6CE94A4B44F330B5D9', 16),
+            new BigInteger('26DC5C6CE94A4B44F330B5D9BBD77CBF958416295CF7E1CE6BCCDC18FF8C07B6', 16)
+        );
+        $this->setBasePoint(
+            new BigInteger('8BD2AEB9CB7E57CB2C4B482FFC81B7AFB9DE27E1E3BD23C23A4453BD9ACE3262', 16),
+            new BigInteger('547EF835C3DAC4FD97F8461A14611DC9C27745132DED8E545C1D54C72F046997', 16)
+        );
+        $this->setOrder(new BigInteger('A9FB57DBA1EEA9BC3E660A909D838D718C397AA3B561A6F7901E0E82974856A7', 16));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/brainpoolP256t1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/brainpoolP256t1.php
new file mode 100644
index 0000000..724d8b8
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/brainpoolP256t1.php
@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * brainpoolP256t1
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Prime;
+use phpseclib3\Math\BigInteger;
+
+class brainpoolP256t1 extends Prime
+{
+    public function __construct()
+    {
+        $this->setModulo(new BigInteger('A9FB57DBA1EEA9BC3E660A909D838D726E3BF623D52620282013481D1F6E5377', 16));
+        $this->setCoefficients(
+            new BigInteger('A9FB57DBA1EEA9BC3E660A909D838D726E3BF623D52620282013481D1F6E5374', 16), // eg. -3
+            new BigInteger('662C61C430D84EA4FE66A7733D0B76B7BF93EBC4AF2F49256AE58101FEE92B04', 16)
+        );
+        $this->setBasePoint(
+            new BigInteger('A3E8EB3CC1CFE7B7732213B23A656149AFA142C47AAFBC2B79A191562E1305F4', 16),
+            new BigInteger('2D996C823439C56D7F7B22E14644417E69BCB6DE39D027001DABE8F35B25C9BE', 16)
+        );
+        $this->setOrder(new BigInteger('A9FB57DBA1EEA9BC3E660A909D838D718C397AA3B561A6F7901E0E82974856A7', 16));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/brainpoolP320r1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/brainpoolP320r1.php
new file mode 100644
index 0000000..182e622
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/brainpoolP320r1.php
@@ -0,0 +1,40 @@
+<?php
+
+/**
+ * brainpoolP320r1
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Prime;
+use phpseclib3\Math\BigInteger;
+
+class brainpoolP320r1 extends Prime
+{
+    public function __construct()
+    {
+        $this->setModulo(new BigInteger('D35E472036BC4FB7E13C785ED201E065F98FCFA6F6F40DEF4F9' .
+                                        '2B9EC7893EC28FCD412B1F1B32E27', 16));
+        $this->setCoefficients(
+            new BigInteger('3EE30B568FBAB0F883CCEBD46D3F3BB8A2A73513F5EB79DA66190EB085FFA9F4' .
+                           '92F375A97D860EB4', 16),
+            new BigInteger('520883949DFDBC42D3AD198640688A6FE13F41349554B49ACC31DCCD88453981' .
+                           '6F5EB4AC8FB1F1A6', 16)
+        );
+        $this->setBasePoint(
+            new BigInteger('43BD7E9AFB53D8B85289BCC48EE5BFE6F20137D10A087EB6E7871E2A10A599C7' .
+                           '10AF8D0D39E20611', 16),
+            new BigInteger('14FDD05545EC1CC8AB4093247F77275E0743FFED117182EAA9C77877AAAC6AC7' .
+                           'D35245D1692E8EE1', 16)
+        );
+        $this->setOrder(new BigInteger('D35E472036BC4FB7E13C785ED201E065F98FCFA5B68F12A32D4' .
+                                       '82EC7EE8658E98691555B44C59311', 16));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/brainpoolP320t1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/brainpoolP320t1.php
new file mode 100644
index 0000000..d5a620d
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/brainpoolP320t1.php
@@ -0,0 +1,40 @@
+<?php
+
+/**
+ * brainpoolP320t1
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Prime;
+use phpseclib3\Math\BigInteger;
+
+class brainpoolP320t1 extends Prime
+{
+    public function __construct()
+    {
+        $this->setModulo(new BigInteger('D35E472036BC4FB7E13C785ED201E065F98FCFA6F6F40DEF4F9' .
+                                        '2B9EC7893EC28FCD412B1F1B32E27', 16));
+        $this->setCoefficients(
+            new BigInteger('D35E472036BC4FB7E13C785ED201E065F98FCFA6F6F40DEF4F92B9EC7893EC28' .
+                           'FCD412B1F1B32E24', 16), // eg. -3
+            new BigInteger('A7F561E038EB1ED560B3D147DB782013064C19F27ED27C6780AAF77FB8A547CE' .
+                           'B5B4FEF422340353', 16)
+        );
+        $this->setBasePoint(
+            new BigInteger('925BE9FB01AFC6FB4D3E7D4990010F813408AB106C4F09CB7EE07868CC136FFF' .
+                           '3357F624A21BED52', 16),
+            new BigInteger('63BA3A7A27483EBF6671DBEF7ABB30EBEE084E58A0B077AD42A5A0989D1EE71B' .
+                           '1B9BC0455FB0D2C3', 16)
+        );
+        $this->setOrder(new BigInteger('D35E472036BC4FB7E13C785ED201E065F98FCFA5B68F12A32D4' .
+                                       '82EC7EE8658E98691555B44C59311', 16));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/brainpoolP384r1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/brainpoolP384r1.php
new file mode 100644
index 0000000..a20b4b4
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/brainpoolP384r1.php
@@ -0,0 +1,58 @@
+<?php
+
+/**
+ * brainpoolP384r1
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Prime;
+use phpseclib3\Math\BigInteger;
+
+class brainpoolP384r1 extends Prime
+{
+    public function __construct()
+    {
+        $this->setModulo(new BigInteger(
+            '8CB91E82A3386D280F5D6F7E50E641DF152F7109ED5456B412B1DA197FB71123ACD3A729901D1A7' .
+            '1874700133107EC53',
+            16
+        ));
+        $this->setCoefficients(
+            new BigInteger(
+                '7BC382C63D8C150C3C72080ACE05AFA0C2BEA28E4FB22787139165EFBA91F90F8AA5814A503' .
+                'AD4EB04A8C7DD22CE2826',
+                16
+            ),
+            new BigInteger(
+                '4A8C7DD22CE28268B39B55416F0447C2FB77DE107DCD2A62E880EA53EEB62D57CB4390295DB' .
+                'C9943AB78696FA504C11',
+                16
+            )
+        );
+        $this->setBasePoint(
+            new BigInteger(
+                '1D1C64F068CF45FFA2A63A81B7C13F6B8847A3E77EF14FE3DB7FCAFE0CBD10E8E826E03436D' .
+                '646AAEF87B2E247D4AF1E',
+                16
+            ),
+            new BigInteger(
+                '8ABE1D7520F9C2A45CB1EB8E95CFD55262B70B29FEEC5864E19C054FF99129280E464621779' .
+                '1811142820341263C5315',
+                16
+            )
+        );
+        $this->setOrder(new BigInteger(
+            '8CB91E82A3386D280F5D6F7E50E641DF152F7109ED5456B31F166E6CAC0425A7CF3AB6AF6B7FC31' .
+            '03B883202E9046565',
+            16
+        ));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/brainpoolP384t1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/brainpoolP384t1.php
new file mode 100644
index 0000000..366660e
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/brainpoolP384t1.php
@@ -0,0 +1,58 @@
+<?php
+
+/**
+ * brainpoolP384t1
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Prime;
+use phpseclib3\Math\BigInteger;
+
+class brainpoolP384t1 extends Prime
+{
+    public function __construct()
+    {
+        $this->setModulo(new BigInteger(
+            '8CB91E82A3386D280F5D6F7E50E641DF152F7109ED5456B412B1DA197FB71123ACD3A729901D1A7' .
+            '1874700133107EC53',
+            16
+        ));
+        $this->setCoefficients(
+            new BigInteger(
+                '8CB91E82A3386D280F5D6F7E50E641DF152F7109ED5456B412B1DA197FB71123ACD3A729901' .
+                'D1A71874700133107EC50',
+                16
+            ), // eg. -3
+            new BigInteger(
+                '7F519EADA7BDA81BD826DBA647910F8C4B9346ED8CCDC64E4B1ABD11756DCE1D2074AA263B8' .
+                '8805CED70355A33B471EE',
+                16
+            )
+        );
+        $this->setBasePoint(
+            new BigInteger(
+                '18DE98B02DB9A306F2AFCD7235F72A819B80AB12EBD653172476FECD462AABFFC4FF191B946' .
+                'A5F54D8D0AA2F418808CC',
+                16
+            ),
+            new BigInteger(
+                '25AB056962D30651A114AFD2755AD336747F93475B7A1FCA3B88F2B6A208CCFE469408584DC' .
+                '2B2912675BF5B9E582928',
+                16
+            )
+        );
+        $this->setOrder(new BigInteger(
+            '8CB91E82A3386D280F5D6F7E50E641DF152F7109ED5456B31F166E6CAC0425A7CF3AB6AF6B7FC31' .
+            '03B883202E9046565',
+            16
+        ));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/brainpoolP512r1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/brainpoolP512r1.php
new file mode 100644
index 0000000..5efe5e1
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/brainpoolP512r1.php
@@ -0,0 +1,58 @@
+<?php
+
+/**
+ * brainpoolP512r1
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Prime;
+use phpseclib3\Math\BigInteger;
+
+class brainpoolP512r1 extends Prime
+{
+    public function __construct()
+    {
+        $this->setModulo(new BigInteger(
+            'AADD9DB8DBE9C48B3FD4E6AE33C9FC07CB308DB3B3C9D20ED6639CCA703308717D4D9B009BC' .
+            '66842AECDA12AE6A380E62881FF2F2D82C68528AA6056583A48F3',
+            16
+        ));
+        $this->setCoefficients(
+            new BigInteger(
+                '7830A3318B603B89E2327145AC234CC594CBDD8D3DF91610A83441CAEA9863BC2DED5D5AA82' .
+                '53AA10A2EF1C98B9AC8B57F1117A72BF2C7B9E7C1AC4D77FC94CA',
+                16
+            ),
+            new BigInteger(
+                '3DF91610A83441CAEA9863BC2DED5D5AA8253AA10A2EF1C98B9AC8B57F1117A72BF2C7B9E7C' .
+                '1AC4D77FC94CADC083E67984050B75EBAE5DD2809BD638016F723',
+                16
+            )
+        );
+        $this->setBasePoint(
+            new BigInteger(
+                '81AEE4BDD82ED9645A21322E9C4C6A9385ED9F70B5D916C1B43B62EEF4D0098EFF3B1F78E2D' .
+                '0D48D50D1687B93B97D5F7C6D5047406A5E688B352209BCB9F822',
+                16
+            ),
+            new BigInteger(
+                '7DDE385D566332ECC0EABFA9CF7822FDF209F70024A57B1AA000C55B881F8111B2DCDE494A5' .
+                'F485E5BCA4BD88A2763AED1CA2B2FA8F0540678CD1E0F3AD80892',
+                16
+            )
+        );
+        $this->setOrder(new BigInteger(
+            'AADD9DB8DBE9C48B3FD4E6AE33C9FC07CB308DB3B3C9D20ED6639CCA70330870553E5C414CA' .
+            '92619418661197FAC10471DB1D381085DDADDB58796829CA90069',
+            16
+        ));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/brainpoolP512t1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/brainpoolP512t1.php
new file mode 100644
index 0000000..745863a
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/brainpoolP512t1.php
@@ -0,0 +1,58 @@
+<?php
+
+/**
+ * brainpoolP512t1
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Prime;
+use phpseclib3\Math\BigInteger;
+
+class brainpoolP512t1 extends Prime
+{
+    public function __construct()
+    {
+        $this->setModulo(new BigInteger(
+            'AADD9DB8DBE9C48B3FD4E6AE33C9FC07CB308DB3B3C9D20ED6639CCA703308717D4D9B009BC' .
+            '66842AECDA12AE6A380E62881FF2F2D82C68528AA6056583A48F3',
+            16
+        ));
+        $this->setCoefficients(
+            new BigInteger(
+                'AADD9DB8DBE9C48B3FD4E6AE33C9FC07CB308DB3B3C9D20ED6639CCA703308717D4D9B009BC' .
+                '66842AECDA12AE6A380E62881FF2F2D82C68528AA6056583A48F0',
+                16
+            ), // eg. -3
+            new BigInteger(
+                '7CBBBCF9441CFAB76E1890E46884EAE321F70C0BCB4981527897504BEC3E36A62BCDFA23049' .
+                '76540F6450085F2DAE145C22553B465763689180EA2571867423E',
+                16
+            )
+        );
+        $this->setBasePoint(
+            new BigInteger(
+                '640ECE5C12788717B9C1BA06CBC2A6FEBA85842458C56DDE9DB1758D39C0313D82BA51735CD' .
+                'B3EA499AA77A7D6943A64F7A3F25FE26F06B51BAA2696FA9035DA',
+                16
+            ),
+            new BigInteger(
+                '5B534BD595F5AF0FA2C892376C84ACE1BB4E3019B71634C01131159CAE03CEE9D9932184BEE' .
+                'F216BD71DF2DADF86A627306ECFF96DBB8BACE198B61E00F8B332',
+                16
+            )
+        );
+        $this->setOrder(new BigInteger(
+            'AADD9DB8DBE9C48B3FD4E6AE33C9FC07CB308DB3B3C9D20ED6639CCA70330870553E5C414CA' .
+            '92619418661197FAC10471DB1D381085DDADDB58796829CA90069',
+            16
+        ));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/nistb233.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/nistb233.php
new file mode 100644
index 0000000..bae12b0
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/nistb233.php
@@ -0,0 +1,18 @@
+<?php
+
+/**
+ * nistb233
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+final class nistb233 extends sect233r1
+{
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/nistb409.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/nistb409.php
new file mode 100644
index 0000000..a46153d
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/nistb409.php
@@ -0,0 +1,18 @@
+<?php
+
+/**
+ * nistb409
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+final class nistb409 extends sect409r1
+{
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/nistk163.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/nistk163.php
new file mode 100644
index 0000000..8b26376
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/nistk163.php
@@ -0,0 +1,18 @@
+<?php
+
+/**
+ * nistk163
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+final class nistk163 extends sect163k1
+{
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/nistk233.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/nistk233.php
new file mode 100644
index 0000000..69e1413
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/nistk233.php
@@ -0,0 +1,18 @@
+<?php
+
+/**
+ * nistk233
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+final class nistk233 extends sect233k1
+{
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/nistk283.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/nistk283.php
new file mode 100644
index 0000000..9e95f10
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/nistk283.php
@@ -0,0 +1,18 @@
+<?php
+
+/**
+ * sect283k1
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+final class nistk283 extends sect283k1
+{
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/nistk409.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/nistk409.php
new file mode 100644
index 0000000..06bd9af
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/nistk409.php
@@ -0,0 +1,18 @@
+<?php
+
+/**
+ * nistk409
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+final class nistk409 extends sect409k1
+{
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/nistp192.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/nistp192.php
new file mode 100644
index 0000000..ddead3c
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/nistp192.php
@@ -0,0 +1,18 @@
+<?php
+
+/**
+ * nistp192
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+final class nistp192 extends secp192r1
+{
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/nistp224.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/nistp224.php
new file mode 100644
index 0000000..746571b
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/nistp224.php
@@ -0,0 +1,18 @@
+<?php
+
+/**
+ * nistp224
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+final class nistp224 extends secp224r1
+{
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/nistp256.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/nistp256.php
new file mode 100644
index 0000000..a26c0f9
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/nistp256.php
@@ -0,0 +1,18 @@
+<?php
+
+/**
+ * nistp256
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+final class nistp256 extends secp256r1
+{
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/nistp384.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/nistp384.php
new file mode 100644
index 0000000..1f20c02
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/nistp384.php
@@ -0,0 +1,18 @@
+<?php
+
+/**
+ * nistp384
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+final class nistp384 extends secp384r1
+{
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/nistp521.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/nistp521.php
new file mode 100644
index 0000000..86fa050
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/nistp521.php
@@ -0,0 +1,18 @@
+<?php
+
+/**
+ * nistp521
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+final class nistp521 extends secp521r1
+{
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/nistt571.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/nistt571.php
new file mode 100644
index 0000000..7908b38
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/nistt571.php
@@ -0,0 +1,18 @@
+<?php
+
+/**
+ * nistt571
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+final class nistt571 extends sect571k1
+{
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/prime192v1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/prime192v1.php
new file mode 100644
index 0000000..e9c13cd
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/prime192v1.php
@@ -0,0 +1,18 @@
+<?php
+
+/**
+ * prime192v1
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+final class prime192v1 extends secp192r1
+{
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/prime192v2.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/prime192v2.php
new file mode 100644
index 0000000..e3e341f
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/prime192v2.php
@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * prime192v2
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Prime;
+use phpseclib3\Math\BigInteger;
+
+class prime192v2 extends Prime
+{
+    public function __construct()
+    {
+        $this->setModulo(new BigInteger('FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFFFFFFFFFF', 16));
+        $this->setCoefficients(
+            new BigInteger('FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFFFFFFFFFC', 16),
+            new BigInteger('CC22D6DFB95C6B25E49C0D6364A4E5980C393AA21668D953', 16)
+        );
+        $this->setBasePoint(
+            new BigInteger('EEA2BAE7E1497842F2DE7769CFE9C989C072AD696F48034A', 16),
+            new BigInteger('6574D11D69B6EC7A672BB82A083DF2F2B0847DE970B2DE15', 16)
+        );
+        $this->setOrder(new BigInteger('FFFFFFFFFFFFFFFFFFFFFFFE5FB1A724DC80418648D8DD31', 16));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/prime192v3.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/prime192v3.php
new file mode 100644
index 0000000..1e97992
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/prime192v3.php
@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * prime192v3
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Prime;
+use phpseclib3\Math\BigInteger;
+
+class prime192v3 extends Prime
+{
+    public function __construct()
+    {
+        $this->setModulo(new BigInteger('FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFFFFFFFFFF', 16));
+        $this->setCoefficients(
+            new BigInteger('FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFFFFFFFFFC', 16),
+            new BigInteger('22123DC2395A05CAA7423DAECCC94760A7D462256BD56916', 16)
+        );
+        $this->setBasePoint(
+            new BigInteger('7D29778100C65A1DA1783716588DCE2B8B4AEE8E228F1896', 16),
+            new BigInteger('38A90F22637337334B49DCB66A6DC8F9978ACA7648A943B0', 16)
+        );
+        $this->setOrder(new BigInteger('FFFFFFFFFFFFFFFFFFFFFFFF7A62D031C83F4294F640EC13', 16));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/prime239v1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/prime239v1.php
new file mode 100644
index 0000000..084be9d
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/prime239v1.php
@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * prime239v1
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Prime;
+use phpseclib3\Math\BigInteger;
+
+class prime239v1 extends Prime
+{
+    public function __construct()
+    {
+        $this->setModulo(new BigInteger('7FFFFFFFFFFFFFFFFFFFFFFF7FFFFFFFFFFF8000000000007FFFFFFFFFFF', 16));
+        $this->setCoefficients(
+            new BigInteger('7FFFFFFFFFFFFFFFFFFFFFFF7FFFFFFFFFFF8000000000007FFFFFFFFFFC', 16),
+            new BigInteger('6B016C3BDCF18941D0D654921475CA71A9DB2FB27D1D37796185C2942C0A', 16)
+        );
+        $this->setBasePoint(
+            new BigInteger('0FFA963CDCA8816CCC33B8642BEDF905C3D358573D3F27FBBD3B3CB9AAAF', 16),
+            new BigInteger('7DEBE8E4E90A5DAE6E4054CA530BA04654B36818CE226B39FCCB7B02F1AE', 16)
+        );
+        $this->setOrder(new BigInteger('7FFFFFFFFFFFFFFFFFFFFFFF7FFFFF9E5E9A9F5D9071FBD1522688909D0B', 16));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/prime239v2.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/prime239v2.php
new file mode 100644
index 0000000..21941b8
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/prime239v2.php
@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * prime239v2
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Prime;
+use phpseclib3\Math\BigInteger;
+
+class prime239v2 extends Prime
+{
+    public function __construct()
+    {
+        $this->setModulo(new BigInteger('7FFFFFFFFFFFFFFFFFFFFFFF7FFFFFFFFFFF8000000000007FFFFFFFFFFF', 16));
+        $this->setCoefficients(
+            new BigInteger('7FFFFFFFFFFFFFFFFFFFFFFF7FFFFFFFFFFF8000000000007FFFFFFFFFFC', 16),
+            new BigInteger('617FAB6832576CBBFED50D99F0249C3FEE58B94BA0038C7AE84C8C832F2C', 16)
+        );
+        $this->setBasePoint(
+            new BigInteger('38AF09D98727705120C921BB5E9E26296A3CDCF2F35757A0EAFD87B830E7', 16),
+            new BigInteger('5B0125E4DBEA0EC7206DA0FC01D9B081329FB555DE6EF460237DFF8BE4BA', 16)
+        );
+        $this->setOrder(new BigInteger('7FFFFFFFFFFFFFFFFFFFFFFF800000CFA7E8594377D414C03821BC582063', 16));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/prime239v3.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/prime239v3.php
new file mode 100644
index 0000000..78c50f0
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/prime239v3.php
@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * prime239v3
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Prime;
+use phpseclib3\Math\BigInteger;
+
+class prime239v3 extends Prime
+{
+    public function __construct()
+    {
+        $this->setModulo(new BigInteger('7FFFFFFFFFFFFFFFFFFFFFFF7FFFFFFFFFFF8000000000007FFFFFFFFFFF', 16));
+        $this->setCoefficients(
+            new BigInteger('7FFFFFFFFFFFFFFFFFFFFFFF7FFFFFFFFFFF8000000000007FFFFFFFFFFC', 16),
+            new BigInteger('255705FA2A306654B1F4CB03D6A750A30C250102D4988717D9BA15AB6D3E', 16)
+        );
+        $this->setBasePoint(
+            new BigInteger('6768AE8E18BB92CFCF005C949AA2C6D94853D0E660BBF854B1C9505FE95A', 16),
+            new BigInteger('1607E6898F390C06BC1D552BAD226F3B6FCFE48B6E818499AF18E3ED6CF3', 16)
+        );
+        $this->setOrder(new BigInteger('7FFFFFFFFFFFFFFFFFFFFFFF7FFFFF975DEB41B3A6057C3C432146526551', 16));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/prime256v1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/prime256v1.php
new file mode 100644
index 0000000..c72b22e
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/prime256v1.php
@@ -0,0 +1,18 @@
+<?php
+
+/**
+ * prime256v1
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+final class prime256v1 extends secp256r1
+{
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp112r1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp112r1.php
new file mode 100644
index 0000000..d1d3194
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp112r1.php
@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * secp112r1
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Prime;
+use phpseclib3\Math\BigInteger;
+
+class secp112r1 extends Prime
+{
+    public function __construct()
+    {
+        $this->setModulo(new BigInteger('DB7C2ABF62E35E668076BEAD208B', 16));
+        $this->setCoefficients(
+            new BigInteger('DB7C2ABF62E35E668076BEAD2088', 16),
+            new BigInteger('659EF8BA043916EEDE8911702B22', 16)
+        );
+        $this->setBasePoint(
+            new BigInteger('09487239995A5EE76B55F9C2F098', 16),
+            new BigInteger('A89CE5AF8724C0A23E0E0FF77500', 16)
+        );
+        $this->setOrder(new BigInteger('DB7C2ABF62E35E7628DFAC6561C5', 16));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp112r2.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp112r2.php
new file mode 100644
index 0000000..da44e7f
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp112r2.php
@@ -0,0 +1,35 @@
+<?php
+
+/**
+ * secp112r2
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Prime;
+use phpseclib3\Math\BigInteger;
+
+class secp112r2 extends Prime
+{
+    public function __construct()
+    {
+        // same modulo as secp112r1
+        $this->setModulo(new BigInteger('DB7C2ABF62E35E668076BEAD208B', 16));
+        $this->setCoefficients(
+            new BigInteger('6127C24C05F38A0AAAF65C0EF02C', 16),
+            new BigInteger('51DEF1815DB5ED74FCC34C85D709', 16)
+        );
+        $this->setBasePoint(
+            new BigInteger('4BA30AB5E892B4E1649DD0928643', 16),
+            new BigInteger('ADCD46F5882E3747DEF36E956E97', 16)
+        );
+        $this->setOrder(new BigInteger('36DF0AAFD8B8D7597CA10520D04B', 16));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp128r1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp128r1.php
new file mode 100644
index 0000000..34456bc
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp128r1.php
@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * secp128r1
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Prime;
+use phpseclib3\Math\BigInteger;
+
+class secp128r1 extends Prime
+{
+    public function __construct()
+    {
+        $this->setModulo(new BigInteger('FFFFFFFDFFFFFFFFFFFFFFFFFFFFFFFF', 16));
+        $this->setCoefficients(
+            new BigInteger('FFFFFFFDFFFFFFFFFFFFFFFFFFFFFFFC', 16),
+            new BigInteger('E87579C11079F43DD824993C2CEE5ED3', 16)
+        );
+        $this->setBasePoint(
+            new BigInteger('161FF7528B899B2D0C28607CA52C5B86', 16),
+            new BigInteger('CF5AC8395BAFEB13C02DA292DDED7A83', 16)
+        );
+        $this->setOrder(new BigInteger('FFFFFFFE0000000075A30D1B9038A115', 16));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp128r2.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp128r2.php
new file mode 100644
index 0000000..e102c34
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp128r2.php
@@ -0,0 +1,35 @@
+<?php
+
+/**
+ * secp128r2
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Prime;
+use phpseclib3\Math\BigInteger;
+
+class secp128r2 extends Prime
+{
+    public function __construct()
+    {
+        // same as secp128r1
+        $this->setModulo(new BigInteger('FFFFFFFDFFFFFFFFFFFFFFFFFFFFFFFF', 16));
+        $this->setCoefficients(
+            new BigInteger('D6031998D1B3BBFEBF59CC9BBFF9AEE1', 16),
+            new BigInteger('5EEEFCA380D02919DC2C6558BB6D8A5D', 16)
+        );
+        $this->setBasePoint(
+            new BigInteger('7B6AA5D85E572983E6FB32A7CDEBC140', 16),
+            new BigInteger('27B6916A894D3AEE7106FE805FC34B44', 16)
+        );
+        $this->setOrder(new BigInteger('3FFFFFFF7FFFFFFFBE0024720613B5A3', 16));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp160k1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp160k1.php
new file mode 100644
index 0000000..c6a3334
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp160k1.php
@@ -0,0 +1,46 @@
+<?php
+
+/**
+ * secp160k1
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\KoblitzPrime;
+use phpseclib3\Math\BigInteger;
+
+class secp160k1 extends KoblitzPrime
+{
+    public function __construct()
+    {
+        // same as secp160r2
+        $this->setModulo(new BigInteger('FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFAC73', 16));
+        $this->setCoefficients(
+            new BigInteger('0000000000000000000000000000000000000000', 16),
+            new BigInteger('0000000000000000000000000000000000000007', 16)
+        );
+        $this->setBasePoint(
+            new BigInteger('3B4C382CE37AA192A4019E763036F4F5DD4D7EBB', 16),
+            new BigInteger('938CF935318FDCED6BC28286531733C3F03C4FEE', 16)
+        );
+        $this->setOrder(new BigInteger('0100000000000000000001B8FA16DFAB9ACA16B6B3', 16));
+
+        $this->basis = [];
+        $this->basis[] = [
+            'a' => new BigInteger('0096341F1138933BC2F505', -16),
+            'b' => new BigInteger('FF6E9D0418C67BB8D5F562', -16)
+        ];
+        $this->basis[] = [
+            'a' => new BigInteger('01BDCB3A09AAAABEAFF4A8', -16),
+            'b' => new BigInteger('04D12329FF0EF498EA67', -16)
+        ];
+        $this->beta = $this->factory->newInteger(new BigInteger('645B7345A143464942CC46D7CF4D5D1E1E6CBB68', -16));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp160r1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp160r1.php
new file mode 100644
index 0000000..af46877
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp160r1.php
@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * secp160r1
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Prime;
+use phpseclib3\Math\BigInteger;
+
+class secp160r1 extends Prime
+{
+    public function __construct()
+    {
+        $this->setModulo(new BigInteger('FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF7FFFFFFF', 16));
+        $this->setCoefficients(
+            new BigInteger('FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF7FFFFFFC', 16),
+            new BigInteger('1C97BEFC54BD7A8B65ACF89F81D4D4ADC565FA45', 16)
+        );
+        $this->setBasePoint(
+            new BigInteger('4A96B5688EF573284664698968C38BB913CBFC82', 16),
+            new BigInteger('23A628553168947D59DCC912042351377AC5FB32', 16)
+        );
+        $this->setOrder(new BigInteger('0100000000000000000001F4C8F927AED3CA752257', 16));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp160r2.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp160r2.php
new file mode 100644
index 0000000..9bd23d2
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp160r2.php
@@ -0,0 +1,35 @@
+<?php
+
+/**
+ * secp160r2
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Prime;
+use phpseclib3\Math\BigInteger;
+
+class secp160r2 extends Prime
+{
+    public function __construct()
+    {
+        // same as secp160k1
+        $this->setModulo(new BigInteger('FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFAC73', 16));
+        $this->setCoefficients(
+            new BigInteger('FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFAC70', 16),
+            new BigInteger('B4E134D3FB59EB8BAB57274904664D5AF50388BA', 16)
+        );
+        $this->setBasePoint(
+            new BigInteger('52DCB034293A117E1F4FF11B30F7199D3144CE6D', 16),
+            new BigInteger('FEAFFEF2E331F296E071FA0DF9982CFEA7D43F2E', 16)
+        );
+        $this->setOrder(new BigInteger('0100000000000000000000351EE786A818F3A1A16B', 16));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp192k1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp192k1.php
new file mode 100644
index 0000000..79ff2e0
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp192k1.php
@@ -0,0 +1,45 @@
+<?php
+
+/**
+ * secp192k1
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\KoblitzPrime;
+use phpseclib3\Math\BigInteger;
+
+class secp192k1 extends KoblitzPrime
+{
+    public function __construct()
+    {
+        $this->setModulo(new BigInteger('FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFEE37', 16));
+        $this->setCoefficients(
+            new BigInteger('000000000000000000000000000000000000000000000000', 16),
+            new BigInteger('000000000000000000000000000000000000000000000003', 16)
+        );
+        $this->setBasePoint(
+            new BigInteger('DB4FF10EC057E9AE26B07D0280B7F4341DA5D1B1EAE06C7D', 16),
+            new BigInteger('9B2F2F6D9C5628A7844163D015BE86344082AA88D95E2F9D', 16)
+        );
+        $this->setOrder(new BigInteger('FFFFFFFFFFFFFFFFFFFFFFFE26F2FC170F69466A74DEFD8D', 16));
+
+        $this->basis = [];
+        $this->basis[] = [
+            'a' => new BigInteger('00B3FB3400DEC5C4ADCEB8655C', -16),
+            'b' => new BigInteger('8EE96418CCF4CFC7124FDA0F', -16)
+        ];
+        $this->basis[] = [
+            'a' => new BigInteger('01D90D03E8F096B9948B20F0A9', -16),
+            'b' => new BigInteger('42E49819ABBA9474E1083F6B', -16)
+        ];
+        $this->beta = $this->factory->newInteger(new BigInteger('447A96E6C647963E2F7809FEAAB46947F34B0AA3CA0BBA74', -16));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp192r1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp192r1.php
new file mode 100644
index 0000000..83ab1c7
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp192r1.php
@@ -0,0 +1,78 @@
+<?php
+
+/**
+ * secp192r1
+ *
+ * This is the NIST P-192 curve
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Prime;
+use phpseclib3\Math\BigInteger;
+
+class secp192r1 extends Prime
+{
+    public function __construct()
+    {
+        $modulo = new BigInteger('FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFFFFFFFFFF', 16);
+        $this->setModulo($modulo);
+
+        // algorithm 2.27 from http://diamond.boisestate.edu/~liljanab/MATH308/GuideToECC.pdf#page=66
+        /* in theory this should be faster than regular modular reductions save for one small issue.
+           to convert to / from base-2**8 with BCMath you have to call bcmul() and bcdiv() a lot.
+           to convert to / from base-2**8 with PHP64 you have to call base256_rshift() a lot.
+           in short, converting to / from base-2**8 is pretty expensive and that expense is
+           enough to offset whatever else might be gained by a simplified reduction algorithm.
+           now, if PHP supported unsigned integers things might be different. no bit-shifting
+           would be required for the PHP engine and it'd be a lot faster. but as is, BigInteger
+           uses base-2**31 or base-2**26 depending on whether or not the system is has a 32-bit
+           or a 64-bit OS.
+        */
+        /*
+        $m_length = $this->getLengthInBytes();
+        $this->setReduction(function($c) use ($m_length) {
+            $cBytes = $c->toBytes();
+            $className = $this->className;
+
+            if (strlen($cBytes) > 2 * $m_length) {
+                list(, $r) = $c->divide($className::$modulo);
+                return $r;
+            }
+
+            $c = str_pad($cBytes, 48, "\0", STR_PAD_LEFT);
+            $c = array_reverse(str_split($c, 8));
+
+            $null = "\0\0\0\0\0\0\0\0";
+            $s1 = new BigInteger($c[2] . $c[1] . $c[0], 256);
+            $s2 = new BigInteger($null . $c[3] . $c[3], 256);
+            $s3 = new BigInteger($c[4] . $c[4] . $null, 256);
+            $s4 = new BigInteger($c[5] . $c[5] . $c[5], 256);
+
+            $r = $s1->add($s2)->add($s3)->add($s4);
+            while ($r->compare($className::$modulo) >= 0) {
+                $r = $r->subtract($className::$modulo);
+            }
+
+            return $r;
+        });
+        */
+
+        $this->setCoefficients(
+            new BigInteger('FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFFFFFFFFFC', 16),
+            new BigInteger('64210519E59C80E70FA7E9AB72243049FEB8DEECC146B9B1', 16)
+        );
+        $this->setBasePoint(
+            new BigInteger('188DA80EB03090F67CBF20EB43A18800F4FF0AFD82FF1012', 16),
+            new BigInteger('07192B95FFC8DA78631011ED6B24CDD573F977A11E794811', 16)
+        );
+        $this->setOrder(new BigInteger('FFFFFFFFFFFFFFFFFFFFFFFF99DEF836146BC9B1B4D22831', 16));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp224k1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp224k1.php
new file mode 100644
index 0000000..79a5c54
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp224k1.php
@@ -0,0 +1,45 @@
+<?php
+
+/**
+ * secp224k1
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\KoblitzPrime;
+use phpseclib3\Math\BigInteger;
+
+class secp224k1 extends KoblitzPrime
+{
+    public function __construct()
+    {
+        $this->setModulo(new BigInteger('FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFE56D', 16));
+        $this->setCoefficients(
+            new BigInteger('00000000000000000000000000000000000000000000000000000000', 16),
+            new BigInteger('00000000000000000000000000000000000000000000000000000005', 16)
+        );
+        $this->setBasePoint(
+            new BigInteger('A1455B334DF099DF30FC28A169A467E9E47075A90F7E650EB6B7A45C', 16),
+            new BigInteger('7E089FED7FBA344282CAFBD6F7E319F7C0B0BD59E2CA4BDB556D61A5', 16)
+        );
+        $this->setOrder(new BigInteger('010000000000000000000000000001DCE8D2EC6184CAF0A971769FB1F7', 16));
+
+        $this->basis = [];
+        $this->basis[] = [
+            'a' => new BigInteger('00B8ADF1378A6EB73409FA6C9C637D', -16),
+            'b' => new BigInteger('94730F82B358A3776A826298FA6F', -16)
+        ];
+        $this->basis[] = [
+            'a' => new BigInteger('01DCE8D2EC6184CAF0A972769FCC8B', -16),
+            'b' => new BigInteger('4D2100BA3DC75AAB747CCF355DEC', -16)
+        ];
+        $this->beta = $this->factory->newInteger(new BigInteger('01F178FFA4B17C89E6F73AECE2AAD57AF4C0A748B63C830947B27E04', -16));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp224r1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp224r1.php
new file mode 100644
index 0000000..a9e474a
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp224r1.php
@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * secp224r1
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Prime;
+use phpseclib3\Math\BigInteger;
+
+class secp224r1 extends Prime
+{
+    public function __construct()
+    {
+        $this->setModulo(new BigInteger('FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF000000000000000000000001', 16));
+        $this->setCoefficients(
+            new BigInteger('FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFE', 16),
+            new BigInteger('B4050A850C04B3ABF54132565044B0B7D7BFD8BA270B39432355FFB4', 16)
+        );
+        $this->setBasePoint(
+            new BigInteger('B70E0CBD6BB4BF7F321390B94A03C1D356C21122343280D6115C1D21', 16),
+            new BigInteger('BD376388B5F723FB4C22DFE6CD4375A05A07476444D5819985007E34', 16)
+        );
+        $this->setOrder(new BigInteger('FFFFFFFFFFFFFFFFFFFFFFFFFFFF16A2E0B8F03E13DD29455C5C2A3D', 16));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp256k1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp256k1.php
new file mode 100644
index 0000000..462e7a1
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp256k1.php
@@ -0,0 +1,49 @@
+<?php
+
+/**
+ * secp256k1
+ *
+ * This is the curve used in Bitcoin
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+//use phpseclib3\Crypt\EC\BaseCurves\Prime;
+use phpseclib3\Crypt\EC\BaseCurves\KoblitzPrime;
+use phpseclib3\Math\BigInteger;
+
+//class secp256k1 extends Prime
+class secp256k1 extends KoblitzPrime
+{
+    public function __construct()
+    {
+        $this->setModulo(new BigInteger('FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFC2F', 16));
+        $this->setCoefficients(
+            new BigInteger('0000000000000000000000000000000000000000000000000000000000000000', 16),
+            new BigInteger('0000000000000000000000000000000000000000000000000000000000000007', 16)
+        );
+        $this->setOrder(new BigInteger('FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141', 16));
+        $this->setBasePoint(
+            new BigInteger('79BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798', 16),
+            new BigInteger('483ADA7726A3C4655DA4FBFC0E1108A8FD17B448A68554199C47D08FFB10D4B8', 16)
+        );
+
+        $this->basis = [];
+        $this->basis[] = [
+            'a' => new BigInteger('3086D221A7D46BCDE86C90E49284EB15', -16),
+            'b' => new BigInteger('FF1BBC8129FEF177D790AB8056F5401B3D', -16)
+        ];
+        $this->basis[] = [
+            'a' => new BigInteger('114CA50F7A8E2F3F657C1108D9D44CFD8', -16),
+            'b' => new BigInteger('3086D221A7D46BCDE86C90E49284EB15', -16)
+        ];
+        $this->beta = $this->factory->newInteger(new BigInteger('7AE96A2B657C07106E64479EAC3434E99CF0497512F58995C1396C28719501EE', -16));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp256r1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp256r1.php
new file mode 100644
index 0000000..9003373
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp256r1.php
@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * secp256r1
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Prime;
+use phpseclib3\Math\BigInteger;
+
+class secp256r1 extends Prime
+{
+    public function __construct()
+    {
+        $this->setModulo(new BigInteger('FFFFFFFF00000001000000000000000000000000FFFFFFFFFFFFFFFFFFFFFFFF', 16));
+        $this->setCoefficients(
+            new BigInteger('FFFFFFFF00000001000000000000000000000000FFFFFFFFFFFFFFFFFFFFFFFC', 16),
+            new BigInteger('5AC635D8AA3A93E7B3EBBD55769886BC651D06B0CC53B0F63BCE3C3E27D2604B', 16)
+        );
+        $this->setBasePoint(
+            new BigInteger('6B17D1F2E12C4247F8BCE6E563A440F277037D812DEB33A0F4A13945D898C296', 16),
+            new BigInteger('4FE342E2FE1A7F9B8EE7EB4A7C0F9E162BCE33576B315ECECBB6406837BF51F5', 16)
+        );
+        $this->setOrder(new BigInteger('FFFFFFFF00000000FFFFFFFFFFFFFFFFBCE6FAADA7179E84F3B9CAC2FC632551', 16));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp384r1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp384r1.php
new file mode 100644
index 0000000..98764a3
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp384r1.php
@@ -0,0 +1,52 @@
+<?php
+
+/**
+ * secp384r1
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Prime;
+use phpseclib3\Math\BigInteger;
+
+class secp384r1 extends Prime
+{
+    public function __construct()
+    {
+        $this->setModulo(new BigInteger(
+            'FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFF0000000000000000FFFFFFFF',
+            16
+        ));
+        $this->setCoefficients(
+            new BigInteger(
+                'FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFF0000000000000000FFFFFFFC',
+                16
+            ),
+            new BigInteger(
+                'B3312FA7E23EE7E4988E056BE3F82D19181D9C6EFE8141120314088F5013875AC656398D8A2ED19D2A85C8EDD3EC2AEF',
+                16
+            )
+        );
+        $this->setBasePoint(
+            new BigInteger(
+                'AA87CA22BE8B05378EB1C71EF320AD746E1D3B628BA79B9859F741E082542A385502F25DBF55296C3A545E3872760AB7',
+                16
+            ),
+            new BigInteger(
+                '3617DE4A96262C6F5D9E98BF9292DC29F8F41DBD289A147CE9DA3113B5F0B8C00A60B1CE1D7E819D7A431D7C90EA0E5F',
+                16
+            )
+        );
+        $this->setOrder(new BigInteger(
+            'FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFC7634D81F4372DDF581A0DB248B0A77AECEC196ACCC52973',
+            16
+        ));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp521r1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp521r1.php
new file mode 100644
index 0000000..b89a4ea
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/secp521r1.php
@@ -0,0 +1,46 @@
+<?php
+
+/**
+ * secp521r1
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Prime;
+use phpseclib3\Math\BigInteger;
+
+class secp521r1 extends Prime
+{
+    public function __construct()
+    {
+        $this->setModulo(new BigInteger('01FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF' .
+                                        'FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF' .
+                                        'FFFF', 16));
+        $this->setCoefficients(
+            new BigInteger('01FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF' .
+                           'FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF' .
+                           'FFFC', 16),
+            new BigInteger('0051953EB9618E1C9A1F929A21A0B68540EEA2DA725B99B315F3B8B489918EF1' .
+                           '09E156193951EC7E937B1652C0BD3BB1BF073573DF883D2C34F1EF451FD46B50' .
+                           '3F00', 16)
+        );
+        $this->setBasePoint(
+            new BigInteger('00C6858E06B70404E9CD9E3ECB662395B4429C648139053FB521F828AF606B4D' .
+                           '3DBAA14B5E77EFE75928FE1DC127A2FFA8DE3348B3C1856A429BF97E7E31C2E5' .
+                           'BD66', 16),
+            new BigInteger('011839296A789A3BC0045C8A5FB42C7D1BD998F54449579B446817AFBD17273E' .
+                           '662C97EE72995EF42640C550B9013FAD0761353C7086A272C24088BE94769FD1' .
+                           '6650', 16)
+        );
+        $this->setOrder(new BigInteger('01FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF' .
+                                       'FFFA51868783BF2F966B7FCC0148F709A5D03BB5C9B8899C47AEBB6FB71E9138' .
+                                       '6409', 16));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect113r1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect113r1.php
new file mode 100644
index 0000000..77ec760
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect113r1.php
@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * sect113r1
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Binary;
+use phpseclib3\Math\BigInteger;
+
+class sect113r1 extends Binary
+{
+    public function __construct()
+    {
+        $this->setModulo(113, 9, 0);
+        $this->setCoefficients(
+            '003088250CA6E7C7FE649CE85820F7',
+            '00E8BEE4D3E2260744188BE0E9C723'
+        );
+        $this->setBasePoint(
+            '009D73616F35F4AB1407D73562C10F',
+            '00A52830277958EE84D1315ED31886'
+        );
+        $this->setOrder(new BigInteger('0100000000000000D9CCEC8A39E56F', 16));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect113r2.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect113r2.php
new file mode 100644
index 0000000..2185d60
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect113r2.php
@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * sect113r2
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Binary;
+use phpseclib3\Math\BigInteger;
+
+class sect113r2 extends Binary
+{
+    public function __construct()
+    {
+        $this->setModulo(113, 9, 0);
+        $this->setCoefficients(
+            '00689918DBEC7E5A0DD6DFC0AA55C7',
+            '0095E9A9EC9B297BD4BF36E059184F'
+        );
+        $this->setBasePoint(
+            '01A57A6A7B26CA5EF52FCDB8164797',
+            '00B3ADC94ED1FE674C06E695BABA1D'
+        );
+        $this->setOrder(new BigInteger('010000000000000108789B2496AF93', 16));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect131r1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect131r1.php
new file mode 100644
index 0000000..1365cb6
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect131r1.php
@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * sect131r1
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Binary;
+use phpseclib3\Math\BigInteger;
+
+class sect131r1 extends Binary
+{
+    public function __construct()
+    {
+        $this->setModulo(131, 8, 3, 2, 0);
+        $this->setCoefficients(
+            '07A11B09A76B562144418FF3FF8C2570B8',
+            '0217C05610884B63B9C6C7291678F9D341'
+        );
+        $this->setBasePoint(
+            '0081BAF91FDF9833C40F9C181343638399',
+            '078C6E7EA38C001F73C8134B1B4EF9E150'
+        );
+        $this->setOrder(new BigInteger('0400000000000000023123953A9464B54D', 16));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect131r2.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect131r2.php
new file mode 100644
index 0000000..93c11b2
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect131r2.php
@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * sect131r2
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Binary;
+use phpseclib3\Math\BigInteger;
+
+class sect131r2 extends Binary
+{
+    public function __construct()
+    {
+        $this->setModulo(131, 8, 3, 2, 0);
+        $this->setCoefficients(
+            '03E5A88919D7CAFCBF415F07C2176573B2',
+            '04B8266A46C55657AC734CE38F018F2192'
+        );
+        $this->setBasePoint(
+            '0356DCD8F2F95031AD652D23951BB366A8',
+            '0648F06D867940A5366D9E265DE9EB240F'
+        );
+        $this->setOrder(new BigInteger('0400000000000000016954A233049BA98F', 16));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect163k1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect163k1.php
new file mode 100644
index 0000000..3c8574b
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect163k1.php
@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * sect163k1
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Binary;
+use phpseclib3\Math\BigInteger;
+
+class sect163k1 extends Binary
+{
+    public function __construct()
+    {
+        $this->setModulo(163, 7, 6, 3, 0);
+        $this->setCoefficients(
+            '000000000000000000000000000000000000000001',
+            '000000000000000000000000000000000000000001'
+        );
+        $this->setBasePoint(
+            '02FE13C0537BBC11ACAA07D793DE4E6D5E5C94EEE8',
+            '0289070FB05D38FF58321F2E800536D538CCDAA3D9'
+        );
+        $this->setOrder(new BigInteger('04000000000000000000020108A2E0CC0D99F8A5EF', 16));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect163r1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect163r1.php
new file mode 100644
index 0000000..26afd87
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect163r1.php
@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * sect163r1
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Binary;
+use phpseclib3\Math\BigInteger;
+
+class sect163r1 extends Binary
+{
+    public function __construct()
+    {
+        $this->setModulo(163, 7, 6, 3, 0);
+        $this->setCoefficients(
+            '07B6882CAAEFA84F9554FF8428BD88E246D2782AE2',
+            '0713612DCDDCB40AAB946BDA29CA91F73AF958AFD9'
+        );
+        $this->setBasePoint(
+            '0369979697AB43897789566789567F787A7876A654',
+            '00435EDB42EFAFB2989D51FEFCE3C80988F41FF883'
+        );
+        $this->setOrder(new BigInteger('03FFFFFFFFFFFFFFFFFFFF48AAB689C29CA710279B', 16));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect163r2.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect163r2.php
new file mode 100644
index 0000000..38f9466
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect163r2.php
@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * sect163r2
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Binary;
+use phpseclib3\Math\BigInteger;
+
+class sect163r2 extends Binary
+{
+    public function __construct()
+    {
+        $this->setModulo(163, 7, 6, 3, 0);
+        $this->setCoefficients(
+            '000000000000000000000000000000000000000001',
+            '020A601907B8C953CA1481EB10512F78744A3205FD'
+        );
+        $this->setBasePoint(
+            '03F0EBA16286A2D57EA0991168D4994637E8343E36',
+            '00D51FBC6C71A0094FA2CDD545B11C5C0C797324F1'
+        );
+        $this->setOrder(new BigInteger('040000000000000000000292FE77E70C12A4234C33', 16));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect193r1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect193r1.php
new file mode 100644
index 0000000..951f261
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect193r1.php
@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * sect193r1
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Binary;
+use phpseclib3\Math\BigInteger;
+
+class sect193r1 extends Binary
+{
+    public function __construct()
+    {
+        $this->setModulo(193, 15, 0);
+        $this->setCoefficients(
+            '0017858FEB7A98975169E171F77B4087DE098AC8A911DF7B01',
+            '00FDFB49BFE6C3A89FACADAA7A1E5BBC7CC1C2E5D831478814'
+        );
+        $this->setBasePoint(
+            '01F481BC5F0FF84A74AD6CDF6FDEF4BF6179625372D8C0C5E1',
+            '0025E399F2903712CCF3EA9E3A1AD17FB0B3201B6AF7CE1B05'
+        );
+        $this->setOrder(new BigInteger('01000000000000000000000000C7F34A778F443ACC920EBA49', 16));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect193r2.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect193r2.php
new file mode 100644
index 0000000..e3ff47a
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect193r2.php
@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * sect193r2
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Binary;
+use phpseclib3\Math\BigInteger;
+
+class sect193r2 extends Binary
+{
+    public function __construct()
+    {
+        $this->setModulo(193, 15, 0);
+        $this->setCoefficients(
+            '0163F35A5137C2CE3EA6ED8667190B0BC43ECD69977702709B',
+            '00C9BB9E8927D4D64C377E2AB2856A5B16E3EFB7F61D4316AE'
+        );
+        $this->setBasePoint(
+            '00D9B67D192E0367C803F39E1A7E82CA14A651350AAE617E8F',
+            '01CE94335607C304AC29E7DEFBD9CA01F596F927224CDECF6C'
+        );
+        $this->setOrder(new BigInteger('010000000000000000000000015AAB561B005413CCD4EE99D5', 16));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect233k1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect233k1.php
new file mode 100644
index 0000000..eea3f7a
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect233k1.php
@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * sect233k1
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Binary;
+use phpseclib3\Math\BigInteger;
+
+class sect233k1 extends Binary
+{
+    public function __construct()
+    {
+        $this->setModulo(233, 74, 0);
+        $this->setCoefficients(
+            '000000000000000000000000000000000000000000000000000000000000',
+            '000000000000000000000000000000000000000000000000000000000001'
+        );
+        $this->setBasePoint(
+            '017232BA853A7E731AF129F22FF4149563A419C26BF50A4C9D6EEFAD6126',
+            '01DB537DECE819B7F70F555A67C427A8CD9BF18AEB9B56E0C11056FAE6A3'
+        );
+        $this->setOrder(new BigInteger('8000000000000000000000000000069D5BB915BCD46EFB1AD5F173ABDF', 16));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect233r1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect233r1.php
new file mode 100644
index 0000000..68219f0
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect233r1.php
@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * sect233r1
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Binary;
+use phpseclib3\Math\BigInteger;
+
+class sect233r1 extends Binary
+{
+    public function __construct()
+    {
+        $this->setModulo(233, 74, 0);
+        $this->setCoefficients(
+            '000000000000000000000000000000000000000000000000000000000001',
+            '0066647EDE6C332C7F8C0923BB58213B333B20E9CE4281FE115F7D8F90AD'
+        );
+        $this->setBasePoint(
+            '00FAC9DFCBAC8313BB2139F1BB755FEF65BC391F8B36F8F8EB7371FD558B',
+            '01006A08A41903350678E58528BEBF8A0BEFF867A7CA36716F7E01F81052'
+        );
+        $this->setOrder(new BigInteger('01000000000000000000000000000013E974E72F8A6922031D2603CFE0D7', 16));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect239k1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect239k1.php
new file mode 100644
index 0000000..0e6994b
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect239k1.php
@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * sect239k1
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wiggint  on <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Binary;
+use phpseclib3\Math\BigInteger;
+
+class sect239k1 extends Binary
+{
+    public function __construct()
+    {
+        $this->setModulo(239, 158, 0);
+        $this->setCoefficients(
+            '000000000000000000000000000000000000000000000000000000000000',
+            '000000000000000000000000000000000000000000000000000000000001'
+        );
+        $this->setBasePoint(
+            '29A0B6A887A983E9730988A68727A8B2D126C44CC2CC7B2A6555193035DC',
+            '76310804F12E549BDB011C103089E73510ACB275FC312A5DC6B76553F0CA'
+        );
+        $this->setOrder(new BigInteger('2000000000000000000000000000005A79FEC67CB6E91F1C1DA800E478A5', 16));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect283k1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect283k1.php
new file mode 100644
index 0000000..279c24a
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect283k1.php
@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * sect283k1
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wiggint  on <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Binary;
+use phpseclib3\Math\BigInteger;
+
+class sect283k1 extends Binary
+{
+    public function __construct()
+    {
+        $this->setModulo(283, 12, 7, 5, 0);
+        $this->setCoefficients(
+            '000000000000000000000000000000000000000000000000000000000000000000000000',
+            '000000000000000000000000000000000000000000000000000000000000000000000001'
+        );
+        $this->setBasePoint(
+            '0503213F78CA44883F1A3B8162F188E553CD265F23C1567A16876913B0C2AC2458492836',
+            '01CCDA380F1C9E318D90F95D07E5426FE87E45C0E8184698E45962364E34116177DD2259'
+        );
+        $this->setOrder(new BigInteger('01FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFE9AE2ED07577265DFF7F94451E061E163C61', 16));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect283r1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect283r1.php
new file mode 100644
index 0000000..e44a607
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect283r1.php
@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * sect283r1
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wiggint  on <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Binary;
+use phpseclib3\Math\BigInteger;
+
+class sect283r1 extends Binary
+{
+    public function __construct()
+    {
+        $this->setModulo(283, 12, 7, 5, 0);
+        $this->setCoefficients(
+            '000000000000000000000000000000000000000000000000000000000000000000000001',
+            '027B680AC8B8596DA5A4AF8A19A0303FCA97FD7645309FA2A581485AF6263E313B79A2F5'
+        );
+        $this->setBasePoint(
+            '05F939258DB7DD90E1934F8C70B0DFEC2EED25B8557EAC9C80E2E198F8CDBECD86B12053',
+            '03676854FE24141CB98FE6D4B20D02B4516FF702350EDDB0826779C813F0DF45BE8112F4'
+        );
+        $this->setOrder(new BigInteger('03FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEF90399660FC938A90165B042A7CEFADB307', 16));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect409k1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect409k1.php
new file mode 100644
index 0000000..1fe329d
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect409k1.php
@@ -0,0 +1,38 @@
+<?php
+
+/**
+ * sect409k1
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wiggint  on <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Binary;
+use phpseclib3\Math\BigInteger;
+
+class sect409k1 extends Binary
+{
+    public function __construct()
+    {
+        $this->setModulo(409, 87, 0);
+        $this->setCoefficients(
+            '00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000',
+            '00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001'
+        );
+        $this->setBasePoint(
+            '0060F05F658F49C1AD3AB1890F7184210EFD0987E307C84C27ACCFB8F9F67CC2C460189EB5AAAA62EE222EB1B35540CFE9023746',
+            '01E369050B7C4E42ACBA1DACBF04299C3460782F918EA427E6325165E9EA10E3DA5F6C42E9C55215AA9CA27A5863EC48D8E0286B'
+        );
+        $this->setOrder(new BigInteger(
+            '7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFE5F' .
+            '83B2D4EA20400EC4557D5ED3E3E7CA5B4B5C83B8E01E5FCF',
+            16
+        ));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect409r1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect409r1.php
new file mode 100644
index 0000000..3e209ef
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect409r1.php
@@ -0,0 +1,38 @@
+<?php
+
+/**
+ * sect409r1
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wiggint  on <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Binary;
+use phpseclib3\Math\BigInteger;
+
+class sect409r1 extends Binary
+{
+    public function __construct()
+    {
+        $this->setModulo(409, 87, 0);
+        $this->setCoefficients(
+            '00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001',
+            '0021A5C2C8EE9FEB5C4B9A753B7B476B7FD6422EF1F3DD674761FA99D6AC27C8A9A197B272822F6CD57A55AA4F50AE317B13545F'
+        );
+        $this->setBasePoint(
+            '015D4860D088DDB3496B0C6064756260441CDE4AF1771D4DB01FFE5B34E59703DC255A868A1180515603AEAB60794E54BB7996A7',
+            '0061B1CFAB6BE5F32BBFA78324ED106A7636B9C5A7BD198D0158AA4F5488D08F38514F1FDF4B4F40D2181B3681C364BA0273C706'
+        );
+        $this->setOrder(new BigInteger(
+            '010000000000000000000000000000000000000000000000000001E2' .
+            'AAD6A612F33307BE5FA47C3C9E052F838164CD37D9A21173',
+            16
+        ));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect571k1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect571k1.php
new file mode 100644
index 0000000..3c54eab
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect571k1.php
@@ -0,0 +1,42 @@
+<?php
+
+/**
+ * sect571k1
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wiggint  on <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Binary;
+use phpseclib3\Math\BigInteger;
+
+class sect571k1 extends Binary
+{
+    public function __construct()
+    {
+        $this->setModulo(571, 10, 5, 2, 0);
+        $this->setCoefficients(
+            '000000000000000000000000000000000000000000000000000000000000000000000000' .
+            '000000000000000000000000000000000000000000000000000000000000000000000000',
+            '000000000000000000000000000000000000000000000000000000000000000000000000' .
+            '000000000000000000000000000000000000000000000000000000000000000000000001'
+        );
+        $this->setBasePoint(
+            '026EB7A859923FBC82189631F8103FE4AC9CA2970012D5D46024804801841CA443709584' .
+            '93B205E647DA304DB4CEB08CBBD1BA39494776FB988B47174DCA88C7E2945283A01C8972',
+            '0349DC807F4FBF374F4AEADE3BCA95314DD58CEC9F307A54FFC61EFC006D8A2C9D4979C0' .
+            'AC44AEA74FBEBBB9F772AEDCB620B01A7BA7AF1B320430C8591984F601CD4C143EF1C7A3'
+        );
+        $this->setOrder(new BigInteger(
+            '020000000000000000000000000000000000000000000000000000000000000000000000' .
+            '131850E1F19A63E4B391A8DB917F4138B630D84BE5D639381E91DEB45CFE778F637C1001',
+            16
+        ));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect571r1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect571r1.php
new file mode 100644
index 0000000..172c1af
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/sect571r1.php
@@ -0,0 +1,42 @@
+<?php
+
+/**
+ * sect571r1
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wiggint  on <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Binary;
+use phpseclib3\Math\BigInteger;
+
+class sect571r1 extends Binary
+{
+    public function __construct()
+    {
+        $this->setModulo(571, 10, 5, 2, 0);
+        $this->setCoefficients(
+            '000000000000000000000000000000000000000000000000000000000000000000000000' .
+            '000000000000000000000000000000000000000000000000000000000000000000000001',
+            '02F40E7E2221F295DE297117B7F3D62F5C6A97FFCB8CEFF1CD6BA8CE4A9A18AD84FFABBD' .
+            '8EFA59332BE7AD6756A66E294AFD185A78FF12AA520E4DE739BACA0C7FFEFF7F2955727A'
+        );
+        $this->setBasePoint(
+            '0303001D34B856296C16C0D40D3CD7750A93D1D2955FA80AA5F40FC8DB7B2ABDBDE53950' .
+            'F4C0D293CDD711A35B67FB1499AE60038614F1394ABFA3B4C850D927E1E7769C8EEC2D19',
+            '037BF27342DA639B6DCCFFFEB73D69D78C6C27A6009CBBCA1980F8533921E8A684423E43' .
+            'BAB08A576291AF8F461BB2A8B3531D2F0485C19B16E2F1516E23DD3C1A4827AF1B8AC15B'
+        );
+        $this->setOrder(new BigInteger(
+            '03FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF' .
+            'E661CE18FF55987308059B186823851EC7DD9CA1161DE93D5174D66E8382E9BB2FE84E47',
+            16
+        ));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Keys/Common.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Keys/Common.php
new file mode 100644
index 0000000..63402b4
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Keys/Common.php
@@ -0,0 +1,549 @@
+<?php
+
+/**
+ * Generic EC Key Parsing Helper functions
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\EC\Formats\Keys;
+
+use phpseclib3\Common\Functions\Strings;
+use phpseclib3\Crypt\EC\BaseCurves\Base as BaseCurve;
+use phpseclib3\Crypt\EC\BaseCurves\Binary as BinaryCurve;
+use phpseclib3\Crypt\EC\BaseCurves\Prime as PrimeCurve;
+use phpseclib3\Crypt\EC\BaseCurves\TwistedEdwards as TwistedEdwardsCurve;
+use phpseclib3\Exception\UnsupportedCurveException;
+use phpseclib3\File\ASN1;
+use phpseclib3\File\ASN1\Maps;
+use phpseclib3\Math\BigInteger;
+
+/**
+ * Generic EC Key Parsing Helper functions
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+trait Common
+{
+    /**
+     * Curve OIDs
+     *
+     * @var array
+     */
+    private static $curveOIDs = [];
+
+    /**
+     * Child OIDs loaded
+     *
+     * @var bool
+     */
+    protected static $childOIDsLoaded = false;
+
+    /**
+     * Use Named Curves
+     *
+     * @var bool
+     */
+    private static $useNamedCurves = true;
+
+    /**
+     * Initialize static variables
+     */
+    private static function initialize_static_variables()
+    {
+        if (empty(self::$curveOIDs)) {
+            // the sec* curves are from the standards for efficient cryptography group
+            // sect* curves are curves over binary finite fields
+            // secp* curves are curves over prime finite fields
+            // sec*r* curves are regular curves; sec*k* curves are koblitz curves
+            // brainpool*r* curves are regular prime finite field curves
+            // brainpool*t* curves are twisted versions of the brainpool*r* curves
+            self::$curveOIDs = [
+                'prime192v1' => '1.2.840.10045.3.1.1', // J.5.1, example 1 (aka secp192r1)
+                'prime192v2' => '1.2.840.10045.3.1.2', // J.5.1, example 2
+                'prime192v3' => '1.2.840.10045.3.1.3', // J.5.1, example 3
+                'prime239v1' => '1.2.840.10045.3.1.4', // J.5.2, example 1
+                'prime239v2' => '1.2.840.10045.3.1.5', // J.5.2, example 2
+                'prime239v3' => '1.2.840.10045.3.1.6', // J.5.2, example 3
+                'prime256v1' => '1.2.840.10045.3.1.7', // J.5.3, example 1 (aka secp256r1)
+
+                // https://tools.ietf.org/html/rfc5656#section-10
+                'nistp256' => '1.2.840.10045.3.1.7', // aka secp256r1
+                'nistp384' => '1.3.132.0.34', // aka secp384r1
+                'nistp521' => '1.3.132.0.35', // aka secp521r1
+
+                'nistk163' => '1.3.132.0.1', // aka sect163k1
+                'nistp192' => '1.2.840.10045.3.1.1', // aka secp192r1
+                'nistp224' => '1.3.132.0.33', // aka secp224r1
+                'nistk233' => '1.3.132.0.26', // aka sect233k1
+                'nistb233' => '1.3.132.0.27', // aka sect233r1
+                'nistk283' => '1.3.132.0.16', // aka sect283k1
+                'nistk409' => '1.3.132.0.36', // aka sect409k1
+                'nistb409' => '1.3.132.0.37', // aka sect409r1
+                'nistt571' => '1.3.132.0.38', // aka sect571k1
+
+                // from https://tools.ietf.org/html/rfc5915
+                'secp192r1' => '1.2.840.10045.3.1.1', // aka prime192v1
+                'sect163k1' => '1.3.132.0.1',
+                'sect163r2' => '1.3.132.0.15',
+                'secp224r1' => '1.3.132.0.33',
+                'sect233k1' => '1.3.132.0.26',
+                'sect233r1' => '1.3.132.0.27',
+                'secp256r1' => '1.2.840.10045.3.1.7', // aka prime256v1
+                'sect283k1' => '1.3.132.0.16',
+                'sect283r1' => '1.3.132.0.17',
+                'secp384r1' => '1.3.132.0.34',
+                'sect409k1' => '1.3.132.0.36',
+                'sect409r1' => '1.3.132.0.37',
+                'secp521r1' => '1.3.132.0.35',
+                'sect571k1' => '1.3.132.0.38',
+                'sect571r1' => '1.3.132.0.39',
+                // from http://www.secg.org/SEC2-Ver-1.0.pdf
+                'secp112r1' => '1.3.132.0.6',
+                'secp112r2' => '1.3.132.0.7',
+                'secp128r1' => '1.3.132.0.28',
+                'secp128r2' => '1.3.132.0.29',
+                'secp160k1' => '1.3.132.0.9',
+                'secp160r1' => '1.3.132.0.8',
+                'secp160r2' => '1.3.132.0.30',
+                'secp192k1' => '1.3.132.0.31',
+                'secp224k1' => '1.3.132.0.32',
+                'secp256k1' => '1.3.132.0.10',
+
+                'sect113r1' => '1.3.132.0.4',
+                'sect113r2' => '1.3.132.0.5',
+                'sect131r1' => '1.3.132.0.22',
+                'sect131r2' => '1.3.132.0.23',
+                'sect163r1' => '1.3.132.0.2',
+                'sect193r1' => '1.3.132.0.24',
+                'sect193r2' => '1.3.132.0.25',
+                'sect239k1' => '1.3.132.0.3',
+
+                // from http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.202.2977&rep=rep1&type=pdf#page=36
+                /*
+                'c2pnb163v1' => '1.2.840.10045.3.0.1', // J.4.1, example 1
+                'c2pnb163v2' => '1.2.840.10045.3.0.2', // J.4.1, example 2
+                'c2pnb163v3' => '1.2.840.10045.3.0.3', // J.4.1, example 3
+                'c2pnb172w1' => '1.2.840.10045.3.0.4', // J.4.2, example 1
+                'c2tnb191v1' => '1.2.840.10045.3.0.5', // J.4.3, example 1
+                'c2tnb191v2' => '1.2.840.10045.3.0.6', // J.4.3, example 2
+                'c2tnb191v3' => '1.2.840.10045.3.0.7', // J.4.3, example 3
+                'c2onb191v4' => '1.2.840.10045.3.0.8', // J.4.3, example 4
+                'c2onb191v5' => '1.2.840.10045.3.0.9', // J.4.3, example 5
+                'c2pnb208w1' => '1.2.840.10045.3.0.10', // J.4.4, example 1
+                'c2tnb239v1' => '1.2.840.10045.3.0.11', // J.4.5, example 1
+                'c2tnb239v2' => '1.2.840.10045.3.0.12', // J.4.5, example 2
+                'c2tnb239v3' => '1.2.840.10045.3.0.13', // J.4.5, example 3
+                'c2onb239v4' => '1.2.840.10045.3.0.14', // J.4.5, example 4
+                'c2onb239v5' => '1.2.840.10045.3.0.15', // J.4.5, example 5
+                'c2pnb272w1' => '1.2.840.10045.3.0.16', // J.4.6, example 1
+                'c2pnb304w1' => '1.2.840.10045.3.0.17', // J.4.7, example 1
+                'c2tnb359v1' => '1.2.840.10045.3.0.18', // J.4.8, example 1
+                'c2pnb368w1' => '1.2.840.10045.3.0.19', // J.4.9, example 1
+                'c2tnb431r1' => '1.2.840.10045.3.0.20', // J.4.10, example 1
+                */
+
+                // http://www.ecc-brainpool.org/download/Domain-parameters.pdf
+                // https://tools.ietf.org/html/rfc5639
+                'brainpoolP160r1' => '1.3.36.3.3.2.8.1.1.1',
+                'brainpoolP160t1' => '1.3.36.3.3.2.8.1.1.2',
+                'brainpoolP192r1' => '1.3.36.3.3.2.8.1.1.3',
+                'brainpoolP192t1' => '1.3.36.3.3.2.8.1.1.4',
+                'brainpoolP224r1' => '1.3.36.3.3.2.8.1.1.5',
+                'brainpoolP224t1' => '1.3.36.3.3.2.8.1.1.6',
+                'brainpoolP256r1' => '1.3.36.3.3.2.8.1.1.7',
+                'brainpoolP256t1' => '1.3.36.3.3.2.8.1.1.8',
+                'brainpoolP320r1' => '1.3.36.3.3.2.8.1.1.9',
+                'brainpoolP320t1' => '1.3.36.3.3.2.8.1.1.10',
+                'brainpoolP384r1' => '1.3.36.3.3.2.8.1.1.11',
+                'brainpoolP384t1' => '1.3.36.3.3.2.8.1.1.12',
+                'brainpoolP512r1' => '1.3.36.3.3.2.8.1.1.13',
+                'brainpoolP512t1' => '1.3.36.3.3.2.8.1.1.14'
+            ];
+            ASN1::loadOIDs([
+                'prime-field' => '1.2.840.10045.1.1',
+                'characteristic-two-field' => '1.2.840.10045.1.2',
+                'characteristic-two-basis' => '1.2.840.10045.1.2.3',
+                // per http://www.secg.org/SEC1-Ver-1.0.pdf#page=84, gnBasis "not used here"
+                'gnBasis' => '1.2.840.10045.1.2.3.1', // NULL
+                'tpBasis' => '1.2.840.10045.1.2.3.2', // Trinomial
+                'ppBasis' => '1.2.840.10045.1.2.3.3'  // Pentanomial
+            ] + self::$curveOIDs);
+        }
+    }
+
+    /**
+     * Explicitly set the curve
+     *
+     * If the key contains an implicit curve phpseclib needs the curve
+     * to be explicitly provided
+     *
+     * @param \phpseclib3\Crypt\EC\BaseCurves\Base $curve
+     */
+    public static function setImplicitCurve(BaseCurve $curve)
+    {
+        self::$implicitCurve = $curve;
+    }
+
+    /**
+     * Returns an instance of \phpseclib3\Crypt\EC\BaseCurves\Base based
+     * on the curve parameters
+     *
+     * @param array $params
+     * @return \phpseclib3\Crypt\EC\BaseCurves\Base|false
+     */
+    protected static function loadCurveByParam(array $params)
+    {
+        if (count($params) > 1) {
+            throw new \RuntimeException('No parameters are present');
+        }
+        if (isset($params['namedCurve'])) {
+            $curve = '\phpseclib3\Crypt\EC\Curves\\' . $params['namedCurve'];
+            if (!class_exists($curve)) {
+                throw new UnsupportedCurveException('Named Curve of ' . $params['namedCurve'] . ' is not supported');
+            }
+            return new $curve();
+        }
+        if (isset($params['implicitCurve'])) {
+            if (!isset(self::$implicitCurve)) {
+                throw new \RuntimeException('Implicit curves can be provided by calling setImplicitCurve');
+            }
+            return self::$implicitCurve;
+        }
+        if (isset($params['specifiedCurve'])) {
+            $data = $params['specifiedCurve'];
+            switch ($data['fieldID']['fieldType']) {
+                case 'prime-field':
+                    $curve = new PrimeCurve();
+                    $curve->setModulo($data['fieldID']['parameters']);
+                    $curve->setCoefficients(
+                        new BigInteger($data['curve']['a'], 256),
+                        new BigInteger($data['curve']['b'], 256)
+                    );
+                    $point = self::extractPoint("\0" . $data['base'], $curve);
+                    $curve->setBasePoint(...$point);
+                    $curve->setOrder($data['order']);
+                    return $curve;
+                case 'characteristic-two-field':
+                    $curve = new BinaryCurve();
+                    $params = ASN1::decodeBER($data['fieldID']['parameters']);
+                    $params = ASN1::asn1map($params[0], Maps\Characteristic_two::MAP);
+                    $modulo = [(int) $params['m']->toString()];
+                    switch ($params['basis']) {
+                        case 'tpBasis':
+                            $modulo[] = (int) $params['parameters']->toString();
+                            break;
+                        case 'ppBasis':
+                            $temp = ASN1::decodeBER($params['parameters']);
+                            $temp = ASN1::asn1map($temp[0], Maps\Pentanomial::MAP);
+                            $modulo[] = (int) $temp['k3']->toString();
+                            $modulo[] = (int) $temp['k2']->toString();
+                            $modulo[] = (int) $temp['k1']->toString();
+                    }
+                    $modulo[] = 0;
+                    $curve->setModulo(...$modulo);
+                    $len = ceil($modulo[0] / 8);
+                    $curve->setCoefficients(
+                        Strings::bin2hex($data['curve']['a']),
+                        Strings::bin2hex($data['curve']['b'])
+                    );
+                    $point = self::extractPoint("\0" . $data['base'], $curve);
+                    $curve->setBasePoint(...$point);
+                    $curve->setOrder($data['order']);
+                    return $curve;
+                default:
+                    throw new UnsupportedCurveException('Field Type of ' . $data['fieldID']['fieldType'] . ' is not supported');
+            }
+        }
+        throw new \RuntimeException('No valid parameters are present');
+    }
+
+    /**
+     * Extract points from a string
+     *
+     * Supports both compressed and uncompressed points
+     *
+     * @param string $str
+     * @param \phpseclib3\Crypt\EC\BaseCurves\Base $curve
+     * @return object[]
+     */
+    public static function extractPoint($str, BaseCurve $curve)
+    {
+        if ($curve instanceof TwistedEdwardsCurve) {
+            // first step of point deciding as discussed at the following URL's:
+            // https://tools.ietf.org/html/rfc8032#section-5.1.3
+            // https://tools.ietf.org/html/rfc8032#section-5.2.3
+            $y = $str;
+            $y = strrev($y);
+            $sign = (bool) (ord($y[0]) & 0x80);
+            $y[0] = $y[0] & chr(0x7F);
+            $y = new BigInteger($y, 256);
+            if ($y->compare($curve->getModulo()) >= 0) {
+                throw new \RuntimeException('The Y coordinate should not be >= the modulo');
+            }
+            $point = $curve->recoverX($y, $sign);
+            if (!$curve->verifyPoint($point)) {
+                throw new \RuntimeException('Unable to verify that point exists on curve');
+            }
+            return $point;
+        }
+
+        // the first byte of a bit string represents the number of bits in the last byte that are to be ignored but,
+        // currently, bit strings wanting a non-zero amount of bits trimmed are not supported
+        if (($val = Strings::shift($str)) != "\0") {
+            throw new \UnexpectedValueException('extractPoint expects the first byte to be null - not ' . Strings::bin2hex($val));
+        }
+        if ($str == "\0") {
+            return [];
+        }
+
+        $keylen = strlen($str);
+        $order = $curve->getLengthInBytes();
+        // point compression is being used
+        if ($keylen == $order + 1) {
+            return $curve->derivePoint($str);
+        }
+
+        // point compression is not being used
+        if ($keylen == 2 * $order + 1) {
+            preg_match("#(.)(.{{$order}})(.{{$order}})#s", $str, $matches);
+            list(, $w, $x, $y) = $matches;
+            if ($w != "\4") {
+                throw new \UnexpectedValueException('The first byte of an uncompressed point should be 04 - not ' . Strings::bin2hex($val));
+            }
+            $point = [
+                $curve->convertInteger(new BigInteger($x, 256)),
+                $curve->convertInteger(new BigInteger($y, 256))
+            ];
+
+            if (!$curve->verifyPoint($point)) {
+                throw new \RuntimeException('Unable to verify that point exists on curve');
+            }
+
+            return $point;
+        }
+
+        throw new \UnexpectedValueException('The string representation of the points is not of an appropriate length');
+    }
+
+    /**
+     * Encode Parameters
+     *
+     * @todo Maybe at some point this could be moved to __toString() for each of the curves?
+     * @param \phpseclib3\Crypt\EC\BaseCurves\Base $curve
+     * @param bool $returnArray optional
+     * @param array $options optional
+     * @return string|false
+     */
+    private static function encodeParameters(BaseCurve $curve, $returnArray = false, array $options = [])
+    {
+        $useNamedCurves = isset($options['namedCurve']) ? $options['namedCurve'] : self::$useNamedCurves;
+
+        $reflect = new \ReflectionClass($curve);
+        $name = $reflect->getShortName();
+        if ($useNamedCurves) {
+            if (isset(self::$curveOIDs[$name])) {
+                if ($reflect->isFinal()) {
+                    $reflect = $reflect->getParentClass();
+                    $name = $reflect->getShortName();
+                }
+                return $returnArray ?
+                    ['namedCurve' => $name] :
+                    ASN1::encodeDER(['namedCurve' => $name], Maps\ECParameters::MAP);
+            }
+            foreach (new \DirectoryIterator(__DIR__ . '/../../Curves/') as $file) {
+                if ($file->getExtension() != 'php') {
+                    continue;
+                }
+                $testName = $file->getBasename('.php');
+                $class = 'phpseclib3\Crypt\EC\Curves\\' . $testName;
+                $reflect = new \ReflectionClass($class);
+                if ($reflect->isFinal()) {
+                    continue;
+                }
+                $candidate = new $class();
+                switch ($name) {
+                    case 'Prime':
+                        if (!$candidate instanceof PrimeCurve) {
+                            break;
+                        }
+                        if (!$candidate->getModulo()->equals($curve->getModulo())) {
+                            break;
+                        }
+                        if ($candidate->getA()->toBytes() != $curve->getA()->toBytes()) {
+                            break;
+                        }
+                        if ($candidate->getB()->toBytes() != $curve->getB()->toBytes()) {
+                            break;
+                        }
+
+                        list($candidateX, $candidateY) = $candidate->getBasePoint();
+                        list($curveX, $curveY) = $curve->getBasePoint();
+                        if ($candidateX->toBytes() != $curveX->toBytes()) {
+                            break;
+                        }
+                        if ($candidateY->toBytes() != $curveY->toBytes()) {
+                            break;
+                        }
+
+                        return $returnArray ?
+                            ['namedCurve' => $testName] :
+                            ASN1::encodeDER(['namedCurve' => $testName], Maps\ECParameters::MAP);
+                    case 'Binary':
+                        if (!$candidate instanceof BinaryCurve) {
+                            break;
+                        }
+                        if ($candidate->getModulo() != $curve->getModulo()) {
+                            break;
+                        }
+                        if ($candidate->getA()->toBytes() != $curve->getA()->toBytes()) {
+                            break;
+                        }
+                        if ($candidate->getB()->toBytes() != $curve->getB()->toBytes()) {
+                            break;
+                        }
+
+                        list($candidateX, $candidateY) = $candidate->getBasePoint();
+                        list($curveX, $curveY) = $curve->getBasePoint();
+                        if ($candidateX->toBytes() != $curveX->toBytes()) {
+                            break;
+                        }
+                        if ($candidateY->toBytes() != $curveY->toBytes()) {
+                            break;
+                        }
+
+                        return $returnArray ?
+                            ['namedCurve' => $testName] :
+                            ASN1::encodeDER(['namedCurve' => $testName], Maps\ECParameters::MAP);
+                }
+            }
+        }
+
+        $order = $curve->getOrder();
+        // we could try to calculate the order thusly:
+        // https://crypto.stackexchange.com/a/27914/4520
+        // https://en.wikipedia.org/wiki/Schoof%E2%80%93Elkies%E2%80%93Atkin_algorithm
+        if (!$order) {
+            throw new \RuntimeException('Specified Curves need the order to be specified');
+        }
+        $point = $curve->getBasePoint();
+        $x = $point[0]->toBytes();
+        $y = $point[1]->toBytes();
+
+        if ($curve instanceof PrimeCurve) {
+            /*
+             * valid versions are:
+             *
+             * ecdpVer1:
+             *   - neither the curve or the base point are generated verifiably randomly.
+             * ecdpVer2:
+             *   - curve and base point are generated verifiably at random and curve.seed is present
+             * ecdpVer3:
+             *   - base point is generated verifiably at random but curve is not. curve.seed is present
+             */
+            // other (optional) parameters can be calculated using the methods discused at
+            // https://crypto.stackexchange.com/q/28947/4520
+            $data = [
+                'version' => 'ecdpVer1',
+                'fieldID' => [
+                    'fieldType' => 'prime-field',
+                    'parameters' => $curve->getModulo()
+                ],
+                'curve' => [
+                    'a' => $curve->getA()->toBytes(),
+                    'b' => $curve->getB()->toBytes()
+                ],
+                'base' => "\4" . $x . $y,
+                'order' => $order
+            ];
+
+            return $returnArray ?
+                ['specifiedCurve' => $data] :
+                ASN1::encodeDER(['specifiedCurve' => $data], Maps\ECParameters::MAP);
+        }
+        if ($curve instanceof BinaryCurve) {
+            $modulo = $curve->getModulo();
+            $basis = count($modulo);
+            $m = array_shift($modulo);
+            array_pop($modulo); // the last parameter should always be 0
+            //rsort($modulo);
+            switch ($basis) {
+                case 3:
+                    $basis = 'tpBasis';
+                    $modulo = new BigInteger($modulo[0]);
+                    break;
+                case 5:
+                    $basis = 'ppBasis';
+                    // these should be in strictly ascending order (hence the commented out rsort above)
+                    $modulo = [
+                        'k1' => new BigInteger($modulo[2]),
+                        'k2' => new BigInteger($modulo[1]),
+                        'k3' => new BigInteger($modulo[0])
+                    ];
+                    $modulo = ASN1::encodeDER($modulo, Maps\Pentanomial::MAP);
+                    $modulo = new ASN1\Element($modulo);
+            }
+            $params = ASN1::encodeDER([
+                'm' => new BigInteger($m),
+                'basis' => $basis,
+                'parameters' => $modulo
+            ], Maps\Characteristic_two::MAP);
+            $params = new ASN1\Element($params);
+            $a = ltrim($curve->getA()->toBytes(), "\0");
+            if (!strlen($a)) {
+                $a = "\0";
+            }
+            $b = ltrim($curve->getB()->toBytes(), "\0");
+            if (!strlen($b)) {
+                $b = "\0";
+            }
+            $data = [
+                'version' => 'ecdpVer1',
+                'fieldID' => [
+                    'fieldType' => 'characteristic-two-field',
+                    'parameters' => $params
+                ],
+                'curve' => [
+                    'a' => $a,
+                    'b' => $b
+                ],
+                'base' => "\4" . $x . $y,
+                'order' => $order
+            ];
+
+            return $returnArray ?
+                ['specifiedCurve' => $data] :
+                ASN1::encodeDER(['specifiedCurve' => $data], Maps\ECParameters::MAP);
+        }
+
+        throw new UnsupportedCurveException('Curve cannot be serialized');
+    }
+
+    /**
+     * Use Specified Curve
+     *
+     * A specified curve has all the coefficients, the base points, etc, explicitely included.
+     * A specified curve is a more verbose way of representing a curve
+     */
+    public static function useSpecifiedCurve()
+    {
+        self::$useNamedCurves = false;
+    }
+
+    /**
+     * Use Named Curve
+     *
+     * A named curve does not include any parameters. It is up to the EC parameters to
+     * know what the coefficients, the base points, etc, are from the name of the curve.
+     * A named curve is a more concise way of representing a curve
+     */
+    public static function useNamedCurve()
+    {
+        self::$useNamedCurves = true;
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Keys/JWK.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Keys/JWK.php
new file mode 100644
index 0000000..fd18a98
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Keys/JWK.php
@@ -0,0 +1,189 @@
+<?php
+
+/**
+ * JSON Web Key (RFC7517 / RFC8037) Formatted EC Handler
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\EC\Formats\Keys;
+
+use phpseclib3\Common\Functions\Strings;
+use phpseclib3\Crypt\Common\Formats\Keys\JWK as Progenitor;
+use phpseclib3\Crypt\EC\BaseCurves\Base as BaseCurve;
+use phpseclib3\Crypt\EC\BaseCurves\TwistedEdwards as TwistedEdwardsCurve;
+use phpseclib3\Crypt\EC\Curves\Ed25519;
+use phpseclib3\Crypt\EC\Curves\secp256k1;
+use phpseclib3\Crypt\EC\Curves\secp256r1;
+use phpseclib3\Crypt\EC\Curves\secp384r1;
+use phpseclib3\Crypt\EC\Curves\secp521r1;
+use phpseclib3\Exception\UnsupportedCurveException;
+use phpseclib3\Math\BigInteger;
+
+/**
+ * JWK Formatted EC Handler
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class JWK extends Progenitor
+{
+    use Common;
+
+    /**
+     * Break a public or private key down into its constituent components
+     *
+     * @param string $key
+     * @param string $password optional
+     * @return array
+     */
+    public static function load($key, $password = '')
+    {
+        $key = parent::load($key, $password);
+
+        switch ($key->kty) {
+            case 'EC':
+                switch ($key->crv) {
+                    case 'P-256':
+                    case 'P-384':
+                    case 'P-521':
+                    case 'secp256k1':
+                        break;
+                    default:
+                        throw new UnsupportedCurveException('Only P-256, P-384, P-521 and secp256k1 curves are accepted (' . $key->crv . ' provided)');
+                }
+                break;
+            case 'OKP':
+                switch ($key->crv) {
+                    case 'Ed25519':
+                    case 'Ed448':
+                        break;
+                    default:
+                        throw new UnsupportedCurveException('Only Ed25519 and Ed448 curves are accepted (' . $key->crv . ' provided)');
+                }
+                break;
+            default:
+                throw new \Exception('Only EC and OKP JWK keys are supported');
+        }
+
+        $curve = '\phpseclib3\Crypt\EC\Curves\\' . str_replace('P-', 'nistp', $key->crv);
+        $curve = new $curve();
+
+        if ($curve instanceof TwistedEdwardsCurve) {
+            $QA = self::extractPoint(Strings::base64url_decode($key->x), $curve);
+            if (!isset($key->d)) {
+                return compact('curve', 'QA');
+            }
+            $arr = $curve->extractSecret(Strings::base64url_decode($key->d));
+            return compact('curve', 'QA') + $arr;
+        }
+
+        $QA = [
+            $curve->convertInteger(new BigInteger(Strings::base64url_decode($key->x), 256)),
+            $curve->convertInteger(new BigInteger(Strings::base64url_decode($key->y), 256))
+        ];
+
+        if (!$curve->verifyPoint($QA)) {
+            throw new \RuntimeException('Unable to verify that point exists on curve');
+        }
+
+        if (!isset($key->d)) {
+            return compact('curve', 'QA');
+        }
+
+        $dA = new BigInteger(Strings::base64url_decode($key->d), 256);
+
+        $curve->rangeCheck($dA);
+
+        return compact('curve', 'dA', 'QA');
+    }
+
+    /**
+     * Returns the alias that corresponds to a curve
+     *
+     * @return string
+     */
+    private static function getAlias(BaseCurve $curve)
+    {
+        switch (true) {
+            case $curve instanceof secp256r1:
+                return 'P-256';
+            case $curve instanceof secp384r1:
+                return 'P-384';
+            case $curve instanceof secp521r1:
+                return 'P-521';
+            case $curve instanceof secp256k1:
+                return 'secp256k1';
+        }
+
+        $reflect = new \ReflectionClass($curve);
+        $curveName = $reflect->isFinal() ?
+            $reflect->getParentClass()->getShortName() :
+            $reflect->getShortName();
+        throw new UnsupportedCurveException("$curveName is not a supported curve");
+    }
+
+    /**
+     * Return the array superstructure for an EC public key
+     *
+     * @param \phpseclib3\Crypt\EC\BaseCurves\Base $curve
+     * @param \phpseclib3\Math\Common\FiniteField\Integer[] $publicKey
+     * @return array
+     */
+    private static function savePublicKeyHelper(BaseCurve $curve, array $publicKey)
+    {
+        if ($curve instanceof TwistedEdwardsCurve) {
+            return [
+                'kty' => 'OKP',
+                'crv' => $curve instanceof Ed25519 ? 'Ed25519' : 'Ed448',
+                'x' => Strings::base64url_encode($curve->encodePoint($publicKey))
+            ];
+        }
+
+        return [
+            'kty' => 'EC',
+            'crv' => self::getAlias($curve),
+            'x' => Strings::base64url_encode($publicKey[0]->toBytes()),
+            'y' => Strings::base64url_encode($publicKey[1]->toBytes())
+        ];
+    }
+
+    /**
+     * Convert an EC public key to the appropriate format
+     *
+     * @param \phpseclib3\Crypt\EC\BaseCurves\Base $curve
+     * @param \phpseclib3\Math\Common\FiniteField\Integer[] $publicKey
+     * @param array $options optional
+     * @return string
+     */
+    public static function savePublicKey(BaseCurve $curve, array $publicKey, array $options = [])
+    {
+        $key = self::savePublicKeyHelper($curve, $publicKey);
+
+        return self::wrapKey($key, $options);
+    }
+
+    /**
+     * Convert a private key to the appropriate format.
+     *
+     * @param \phpseclib3\Math\BigInteger $privateKey
+     * @param \phpseclib3\Crypt\EC\Curves\Ed25519 $curve
+     * @param \phpseclib3\Math\Common\FiniteField\Integer[] $publicKey
+     * @param string $secret optional
+     * @param string $password optional
+     * @param array $options optional
+     * @return string
+     */
+    public static function savePrivateKey(BigInteger $privateKey, BaseCurve $curve, array $publicKey, $secret = null, $password = '', array $options = [])
+    {
+        $key = self::savePublicKeyHelper($curve, $publicKey);
+        $key['d'] = $curve instanceof TwistedEdwardsCurve ? $secret : $privateKey->toBytes();
+        $key['d'] = Strings::base64url_encode($key['d']);
+
+        return self::wrapKey($key, $options);
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Keys/MontgomeryPrivate.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Keys/MontgomeryPrivate.php
new file mode 100644
index 0000000..5741b05
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Keys/MontgomeryPrivate.php
@@ -0,0 +1,101 @@
+<?php
+
+/**
+ * Montgomery Private Key Handler
+ *
+ * "Naked" Curve25519 private keys can pretty much be any sequence of random 32x bytes so unless
+ * we have a "hidden" key handler pretty much every 32 byte string will be loaded as a curve25519
+ * private key even if it probably isn't one by PublicKeyLoader.
+ *
+ * "Naked" Curve25519 public keys also a string of 32 bytes so distinguishing between a "naked"
+ * curve25519 private key and a public key is nigh impossible, hence separate plugins for each
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\EC\Formats\Keys;
+
+use phpseclib3\Crypt\EC\BaseCurves\Montgomery as MontgomeryCurve;
+use phpseclib3\Crypt\EC\Curves\Curve25519;
+use phpseclib3\Crypt\EC\Curves\Curve448;
+use phpseclib3\Exception\UnsupportedFormatException;
+use phpseclib3\Math\BigInteger;
+
+/**
+ * Montgomery Curve Private Key Handler
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class MontgomeryPrivate
+{
+    /**
+     * Is invisible flag
+     *
+     */
+    const IS_INVISIBLE = true;
+
+    /**
+     * Break a public or private key down into its constituent components
+     *
+     * @param string $key
+     * @param string $password optional
+     * @return array
+     */
+    public static function load($key, $password = '')
+    {
+        switch (strlen($key)) {
+            case 32:
+                $curve = new Curve25519();
+                break;
+            case 56:
+                $curve = new Curve448();
+                break;
+            default:
+                throw new \LengthException('The only supported lengths are 32 and 56');
+        }
+
+        $components = ['curve' => $curve];
+        $components['dA'] = new BigInteger($key, 256);
+        $curve->rangeCheck($components['dA']);
+        // note that EC::getEncodedCoordinates does some additional "magic" (it does strrev on the result)
+        $components['QA'] = $components['curve']->multiplyPoint($components['curve']->getBasePoint(), $components['dA']);
+
+        return $components;
+    }
+
+    /**
+     * Convert an EC public key to the appropriate format
+     *
+     * @param \phpseclib3\Crypt\EC\BaseCurves\Montgomery $curve
+     * @param \phpseclib3\Math\Common\FiniteField\Integer[] $publicKey
+     * @return string
+     */
+    public static function savePublicKey(MontgomeryCurve $curve, array $publicKey)
+    {
+        return strrev($publicKey[0]->toBytes());
+    }
+
+    /**
+     * Convert a private key to the appropriate format.
+     *
+     * @param \phpseclib3\Math\BigInteger $privateKey
+     * @param \phpseclib3\Crypt\EC\BaseCurves\Montgomery $curve
+     * @param \phpseclib3\Math\Common\FiniteField\Integer[] $publicKey
+     * @param string $secret optional
+     * @param string $password optional
+     * @return string
+     */
+    public static function savePrivateKey(BigInteger $privateKey, MontgomeryCurve $curve, array $publicKey, $secret = null, $password = '')
+    {
+        if (!empty($password) && is_string($password)) {
+            throw new UnsupportedFormatException('MontgomeryPrivate private keys do not support encryption');
+        }
+
+        return $privateKey->toBytes();
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Keys/MontgomeryPublic.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Keys/MontgomeryPublic.php
new file mode 100644
index 0000000..d1ad48a
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Keys/MontgomeryPublic.php
@@ -0,0 +1,71 @@
+<?php
+
+/**
+ * Montgomery Public Key Handler
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\EC\Formats\Keys;
+
+use phpseclib3\Crypt\EC\BaseCurves\Montgomery as MontgomeryCurve;
+use phpseclib3\Crypt\EC\Curves\Curve25519;
+use phpseclib3\Crypt\EC\Curves\Curve448;
+use phpseclib3\Math\BigInteger;
+
+/**
+ * Montgomery Public Key Handler
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class MontgomeryPublic
+{
+    /**
+     * Is invisible flag
+     *
+     */
+    const IS_INVISIBLE = true;
+
+    /**
+     * Break a public or private key down into its constituent components
+     *
+     * @param string $key
+     * @param string $password optional
+     * @return array
+     */
+    public static function load($key, $password = '')
+    {
+        switch (strlen($key)) {
+            case 32:
+                $curve = new Curve25519();
+                break;
+            case 56:
+                $curve = new Curve448();
+                break;
+            default:
+                throw new \LengthException('The only supported lengths are 32 and 56');
+        }
+
+        $components = ['curve' => $curve];
+        $components['QA'] = [$components['curve']->convertInteger(new BigInteger(strrev($key), 256))];
+
+        return $components;
+    }
+
+    /**
+     * Convert an EC public key to the appropriate format
+     *
+     * @param \phpseclib3\Crypt\EC\BaseCurves\Montgomery $curve
+     * @param \phpseclib3\Math\Common\FiniteField\Integer[] $publicKey
+     * @return string
+     */
+    public static function savePublicKey(MontgomeryCurve $curve, array $publicKey)
+    {
+        return strrev($publicKey[0]->toBytes());
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Keys/OpenSSH.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Keys/OpenSSH.php
new file mode 100644
index 0000000..2cd3e19
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Keys/OpenSSH.php
@@ -0,0 +1,209 @@
+<?php
+
+/**
+ * OpenSSH Formatted EC Key Handler
+ *
+ * PHP version 5
+ *
+ * Place in $HOME/.ssh/authorized_keys
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\EC\Formats\Keys;
+
+use phpseclib3\Common\Functions\Strings;
+use phpseclib3\Crypt\Common\Formats\Keys\OpenSSH as Progenitor;
+use phpseclib3\Crypt\EC\BaseCurves\Base as BaseCurve;
+use phpseclib3\Crypt\EC\Curves\Ed25519;
+use phpseclib3\Exception\UnsupportedCurveException;
+use phpseclib3\Math\BigInteger;
+
+/**
+ * OpenSSH Formatted EC Key Handler
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class OpenSSH extends Progenitor
+{
+    use Common;
+
+    /**
+     * Supported Key Types
+     *
+     * @var array
+     */
+    protected static $types = [
+        'ecdsa-sha2-nistp256',
+        'ecdsa-sha2-nistp384',
+        'ecdsa-sha2-nistp521',
+        'ssh-ed25519'
+    ];
+
+    /**
+     * Break a public or private key down into its constituent components
+     *
+     * @param string $key
+     * @param string $password optional
+     * @return array
+     */
+    public static function load($key, $password = '')
+    {
+        $parsed = parent::load($key, $password);
+
+        if (isset($parsed['paddedKey'])) {
+            $paddedKey = $parsed['paddedKey'];
+            list($type) = Strings::unpackSSH2('s', $paddedKey);
+            if ($type != $parsed['type']) {
+                throw new \RuntimeException("The public and private keys are not of the same type ($type vs $parsed[type])");
+            }
+            if ($type == 'ssh-ed25519') {
+                list(, $key, $comment) = Strings::unpackSSH2('sss', $paddedKey);
+                $key = libsodium::load($key);
+                $key['comment'] = $comment;
+                return $key;
+            }
+            list($curveName, $publicKey, $privateKey, $comment) = Strings::unpackSSH2('ssis', $paddedKey);
+            $curve = self::loadCurveByParam(['namedCurve' => $curveName]);
+            $curve->rangeCheck($privateKey);
+            return [
+                'curve' => $curve,
+                'dA' => $privateKey,
+                'QA' => self::extractPoint("\0$publicKey", $curve),
+                'comment' => $comment
+            ];
+        }
+
+        if ($parsed['type'] == 'ssh-ed25519') {
+            if (Strings::shift($parsed['publicKey'], 4) != "\0\0\0\x20") {
+                throw new \RuntimeException('Length of ssh-ed25519 key should be 32');
+            }
+
+            $curve = new Ed25519();
+            $qa = self::extractPoint($parsed['publicKey'], $curve);
+        } else {
+            list($curveName, $publicKey) = Strings::unpackSSH2('ss', $parsed['publicKey']);
+            $curveName = '\phpseclib3\Crypt\EC\Curves\\' . $curveName;
+            $curve = new $curveName();
+
+            $qa = self::extractPoint("\0" . $publicKey, $curve);
+        }
+
+        return [
+            'curve' => $curve,
+            'QA' => $qa,
+            'comment' => $parsed['comment']
+        ];
+    }
+
+    /**
+     * Returns the alias that corresponds to a curve
+     *
+     * @return string
+     */
+    private static function getAlias(BaseCurve $curve)
+    {
+        self::initialize_static_variables();
+
+        $reflect = new \ReflectionClass($curve);
+        $name = $reflect->getShortName();
+
+        $oid = self::$curveOIDs[$name];
+        $aliases = array_filter(self::$curveOIDs, function ($v) use ($oid) {
+            return $v == $oid;
+        });
+        $aliases = array_keys($aliases);
+
+        for ($i = 0; $i < count($aliases); $i++) {
+            if (in_array('ecdsa-sha2-' . $aliases[$i], self::$types)) {
+                $alias = $aliases[$i];
+                break;
+            }
+        }
+
+        if (!isset($alias)) {
+            throw new UnsupportedCurveException($name . ' is not a curve that the OpenSSH plugin supports');
+        }
+
+        return $alias;
+    }
+
+    /**
+     * Convert an EC public key to the appropriate format
+     *
+     * @param \phpseclib3\Crypt\EC\BaseCurves\Base $curve
+     * @param \phpseclib3\Math\Common\FiniteField\Integer[] $publicKey
+     * @param array $options optional
+     * @return string
+     */
+    public static function savePublicKey(BaseCurve $curve, array $publicKey, array $options = [])
+    {
+        $comment = isset($options['comment']) ? $options['comment'] : self::$comment;
+
+        if ($curve instanceof Ed25519) {
+            $key = Strings::packSSH2('ss', 'ssh-ed25519', $curve->encodePoint($publicKey));
+
+            if (isset($options['binary']) ? $options['binary'] : self::$binary) {
+                return $key;
+            }
+
+            $key = 'ssh-ed25519 ' . base64_encode($key) . ' ' . $comment;
+            return $key;
+        }
+
+        $alias = self::getAlias($curve);
+
+        $points = "\4" . $publicKey[0]->toBytes() . $publicKey[1]->toBytes();
+        $key = Strings::packSSH2('sss', 'ecdsa-sha2-' . $alias, $alias, $points);
+
+        if (isset($options['binary']) ? $options['binary'] : self::$binary) {
+            return $key;
+        }
+
+        $key = 'ecdsa-sha2-' . $alias . ' ' . base64_encode($key) . ' ' . $comment;
+
+        return $key;
+    }
+
+    /**
+     * Convert a private key to the appropriate format.
+     *
+     * @param \phpseclib3\Math\BigInteger $privateKey
+     * @param \phpseclib3\Crypt\EC\Curves\Ed25519 $curve
+     * @param \phpseclib3\Math\Common\FiniteField\Integer[] $publicKey
+     * @param string $secret optional
+     * @param string $password optional
+     * @param array $options optional
+     * @return string
+     */
+    public static function savePrivateKey(BigInteger $privateKey, BaseCurve $curve, array $publicKey, $secret = null, $password = '', array $options = [])
+    {
+        if ($curve instanceof Ed25519) {
+            if (!isset($secret)) {
+                throw new \RuntimeException('Private Key does not have a secret set');
+            }
+            if (strlen($secret) != 32) {
+                throw new \RuntimeException('Private Key secret is not of the correct length');
+            }
+
+            $pubKey = $curve->encodePoint($publicKey);
+
+            $publicKey = Strings::packSSH2('ss', 'ssh-ed25519', $pubKey);
+            $privateKey = Strings::packSSH2('sss', 'ssh-ed25519', $pubKey, $secret . $pubKey);
+
+            return self::wrapPrivateKey($publicKey, $privateKey, $password, $options);
+        }
+
+        $alias = self::getAlias($curve);
+
+        $points = "\4" . $publicKey[0]->toBytes() . $publicKey[1]->toBytes();
+        $publicKey = self::savePublicKey($curve, $publicKey, ['binary' => true]);
+
+        $privateKey = Strings::packSSH2('sssi', 'ecdsa-sha2-' . $alias, $alias, $points, $privateKey);
+
+        return self::wrapPrivateKey($publicKey, $privateKey, $password, $options);
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Keys/PKCS1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Keys/PKCS1.php
new file mode 100644
index 0000000..9f4b330
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Keys/PKCS1.php
@@ -0,0 +1,194 @@
+<?php
+
+/**
+ * "PKCS1" (RFC5915) Formatted EC Key Handler
+ *
+ * PHP version 5
+ *
+ * Used by File/X509.php
+ *
+ * Processes keys with the following headers:
+ *
+ * -----BEGIN EC PRIVATE KEY-----
+ * -----BEGIN EC PARAMETERS-----
+ *
+ * Technically, PKCS1 is for RSA keys, only, but we're using PKCS1 to describe
+ * DSA, whose format isn't really formally described anywhere, so might as well
+ * use it to describe this, too. PKCS1 is easier to remember than RFC5915, after
+ * all. I suppose this could also be named IETF but idk
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\EC\Formats\Keys;
+
+use phpseclib3\Common\Functions\Strings;
+use phpseclib3\Crypt\Common\Formats\Keys\PKCS1 as Progenitor;
+use phpseclib3\Crypt\EC\BaseCurves\Base as BaseCurve;
+use phpseclib3\Crypt\EC\BaseCurves\Montgomery as MontgomeryCurve;
+use phpseclib3\Crypt\EC\BaseCurves\TwistedEdwards as TwistedEdwardsCurve;
+use phpseclib3\Exception\UnsupportedCurveException;
+use phpseclib3\File\ASN1;
+use phpseclib3\File\ASN1\Maps;
+use phpseclib3\Math\BigInteger;
+
+/**
+ * "PKCS1" (RFC5915) Formatted EC Key Handler
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class PKCS1 extends Progenitor
+{
+    use Common;
+
+    /**
+     * Break a public or private key down into its constituent components
+     *
+     * @param string $key
+     * @param string $password optional
+     * @return array
+     */
+    public static function load($key, $password = '')
+    {
+        self::initialize_static_variables();
+
+        if (!Strings::is_stringable($key)) {
+            throw new \UnexpectedValueException('Key should be a string - not a ' . gettype($key));
+        }
+
+        if (strpos($key, 'BEGIN EC PARAMETERS') && strpos($key, 'BEGIN EC PRIVATE KEY')) {
+            $components = [];
+
+            preg_match('#-*BEGIN EC PRIVATE KEY-*[^-]*-*END EC PRIVATE KEY-*#s', $key, $matches);
+            $decoded = parent::load($matches[0], $password);
+            $decoded = ASN1::decodeBER($decoded);
+            if (!$decoded) {
+                throw new \RuntimeException('Unable to decode BER');
+            }
+
+            $ecPrivate = ASN1::asn1map($decoded[0], Maps\ECPrivateKey::MAP);
+            if (!is_array($ecPrivate)) {
+                throw new \RuntimeException('Unable to perform ASN1 mapping');
+            }
+
+            if (isset($ecPrivate['parameters'])) {
+                $components['curve'] = self::loadCurveByParam($ecPrivate['parameters']);
+            }
+
+            preg_match('#-*BEGIN EC PARAMETERS-*[^-]*-*END EC PARAMETERS-*#s', $key, $matches);
+            $decoded = parent::load($matches[0], '');
+            $decoded = ASN1::decodeBER($decoded);
+            if (!$decoded) {
+                throw new \RuntimeException('Unable to decode BER');
+            }
+            $ecParams = ASN1::asn1map($decoded[0], Maps\ECParameters::MAP);
+            if (!is_array($ecParams)) {
+                throw new \RuntimeException('Unable to perform ASN1 mapping');
+            }
+            $ecParams = self::loadCurveByParam($ecParams);
+
+            // comparing $ecParams and $components['curve'] directly won't work because they'll have different Math\Common\FiniteField classes
+            // even if the modulo is the same
+            if (isset($components['curve']) && self::encodeParameters($ecParams, false, []) != self::encodeParameters($components['curve'], false, [])) {
+                throw new \RuntimeException('EC PARAMETERS does not correspond to EC PRIVATE KEY');
+            }
+
+            if (!isset($components['curve'])) {
+                $components['curve'] = $ecParams;
+            }
+
+            $components['dA'] = new BigInteger($ecPrivate['privateKey'], 256);
+            $components['curve']->rangeCheck($components['dA']);
+            $components['QA'] = isset($ecPrivate['publicKey']) ?
+                self::extractPoint($ecPrivate['publicKey'], $components['curve']) :
+                $components['curve']->multiplyPoint($components['curve']->getBasePoint(), $components['dA']);
+
+            return $components;
+        }
+
+        $key = parent::load($key, $password);
+
+        $decoded = ASN1::decodeBER($key);
+        if (!$decoded) {
+            throw new \RuntimeException('Unable to decode BER');
+        }
+
+        $key = ASN1::asn1map($decoded[0], Maps\ECParameters::MAP);
+        if (is_array($key)) {
+            return ['curve' => self::loadCurveByParam($key)];
+        }
+
+        $key = ASN1::asn1map($decoded[0], Maps\ECPrivateKey::MAP);
+        if (!is_array($key)) {
+            throw new \RuntimeException('Unable to perform ASN1 mapping');
+        }
+        if (!isset($key['parameters'])) {
+            throw new \RuntimeException('Key cannot be loaded without parameters');
+        }
+
+        $components = [];
+        $components['curve'] = self::loadCurveByParam($key['parameters']);
+        $components['dA'] = new BigInteger($key['privateKey'], 256);
+        $components['QA'] = isset($ecPrivate['publicKey']) ?
+            self::extractPoint($ecPrivate['publicKey'], $components['curve']) :
+            $components['curve']->multiplyPoint($components['curve']->getBasePoint(), $components['dA']);
+
+        return $components;
+    }
+
+    /**
+     * Convert EC parameters to the appropriate format
+     *
+     * @return string
+     */
+    public static function saveParameters(BaseCurve $curve, array $options = [])
+    {
+        self::initialize_static_variables();
+
+        if ($curve instanceof TwistedEdwardsCurve || $curve instanceof MontgomeryCurve) {
+            throw new UnsupportedCurveException('TwistedEdwards and Montgomery Curves are not supported');
+        }
+
+        $key = self::encodeParameters($curve, false, $options);
+
+        return "-----BEGIN EC PARAMETERS-----\r\n" .
+               chunk_split(Strings::base64_encode($key), 64) .
+               "-----END EC PARAMETERS-----\r\n";
+    }
+
+    /**
+     * Convert a private key to the appropriate format.
+     *
+     * @param \phpseclib3\Math\BigInteger $privateKey
+     * @param \phpseclib3\Crypt\EC\BaseCurves\Base $curve
+     * @param \phpseclib3\Math\Common\FiniteField\Integer[] $publicKey
+     * @param string $secret optional
+     * @param string $password optional
+     * @param array $options optional
+     * @return string
+     */
+    public static function savePrivateKey(BigInteger $privateKey, BaseCurve $curve, array $publicKey, $secret = null, $password = '', array $options = [])
+    {
+        self::initialize_static_variables();
+
+        if ($curve instanceof TwistedEdwardsCurve  || $curve instanceof MontgomeryCurve) {
+            throw new UnsupportedCurveException('TwistedEdwards Curves are not supported');
+        }
+
+        $publicKey = "\4" . $publicKey[0]->toBytes() . $publicKey[1]->toBytes();
+
+        $key = [
+            'version' => 'ecPrivkeyVer1',
+            'privateKey' => $privateKey->toBytes(),
+            'parameters' => new ASN1\Element(self::encodeParameters($curve)),
+            'publicKey' => "\0" . $publicKey
+        ];
+
+        $key = ASN1::encodeDER($key, Maps\ECPrivateKey::MAP);
+
+        return self::wrapPrivateKey($key, 'EC', $password, $options);
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Keys/PKCS8.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Keys/PKCS8.php
new file mode 100644
index 0000000..0ec7742
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Keys/PKCS8.php
@@ -0,0 +1,234 @@
+<?php
+
+/**
+ * PKCS#8 Formatted EC Key Handler
+ *
+ * PHP version 5
+ *
+ * Processes keys with the following headers:
+ *
+ * -----BEGIN ENCRYPTED PRIVATE KEY-----
+ * -----BEGIN PRIVATE KEY-----
+ * -----BEGIN PUBLIC KEY-----
+ *
+ * Analogous to ssh-keygen's pkcs8 format (as specified by -m). Although PKCS8
+ * is specific to private keys it's basically creating a DER-encoded wrapper
+ * for keys. This just extends that same concept to public keys (much like ssh-keygen)
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\EC\Formats\Keys;
+
+use phpseclib3\Crypt\Common\Formats\Keys\PKCS8 as Progenitor;
+use phpseclib3\Crypt\EC\BaseCurves\Base as BaseCurve;
+use phpseclib3\Crypt\EC\BaseCurves\Montgomery as MontgomeryCurve;
+use phpseclib3\Crypt\EC\BaseCurves\TwistedEdwards as TwistedEdwardsCurve;
+use phpseclib3\Crypt\EC\Curves\Ed25519;
+use phpseclib3\Crypt\EC\Curves\Ed448;
+use phpseclib3\Exception\UnsupportedCurveException;
+use phpseclib3\File\ASN1;
+use phpseclib3\File\ASN1\Maps;
+use phpseclib3\Math\BigInteger;
+
+/**
+ * PKCS#8 Formatted EC Key Handler
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class PKCS8 extends Progenitor
+{
+    use Common;
+
+    /**
+     * OID Name
+     *
+     * @var array
+     */
+    const OID_NAME = ['id-ecPublicKey', 'id-Ed25519', 'id-Ed448'];
+
+    /**
+     * OID Value
+     *
+     * @var string
+     */
+    const OID_VALUE = ['1.2.840.10045.2.1', '1.3.101.112', '1.3.101.113'];
+
+    /**
+     * Break a public or private key down into its constituent components
+     *
+     * @param string $key
+     * @param string $password optional
+     * @return array
+     */
+    public static function load($key, $password = '')
+    {
+        // initialize_static_variables() is defined in both the trait and the parent class
+        // when it's defined in two places it's the traits one that's called
+        // the parent one is needed, as well, but the parent one is called by other methods
+        // in the parent class as needed and in the context of the parent it's the parent
+        // one that's called
+        self::initialize_static_variables();
+
+        $key = parent::load($key, $password);
+
+        $type = isset($key['privateKey']) ? 'privateKey' : 'publicKey';
+
+        switch ($key[$type . 'Algorithm']['algorithm']) {
+            case 'id-Ed25519':
+            case 'id-Ed448':
+                return self::loadEdDSA($key);
+        }
+
+        $decoded = ASN1::decodeBER($key[$type . 'Algorithm']['parameters']->element);
+        if (!$decoded) {
+            throw new \RuntimeException('Unable to decode BER');
+        }
+        $params = ASN1::asn1map($decoded[0], Maps\ECParameters::MAP);
+        if (!$params) {
+            throw new \RuntimeException('Unable to decode the parameters using Maps\ECParameters');
+        }
+
+        $components = [];
+        $components['curve'] = self::loadCurveByParam($params);
+
+        if ($type == 'publicKey') {
+            $components['QA'] = self::extractPoint("\0" . $key['publicKey'], $components['curve']);
+
+            return $components;
+        }
+
+        $decoded = ASN1::decodeBER($key['privateKey']);
+        if (!$decoded) {
+            throw new \RuntimeException('Unable to decode BER');
+        }
+        $key = ASN1::asn1map($decoded[0], Maps\ECPrivateKey::MAP);
+        if (isset($key['parameters']) && $params != $key['parameters']) {
+            throw new \RuntimeException('The PKCS8 parameter field does not match the private key parameter field');
+        }
+
+        $components['dA'] = new BigInteger($key['privateKey'], 256);
+        $components['curve']->rangeCheck($components['dA']);
+        $components['QA'] = isset($key['publicKey']) ?
+            self::extractPoint($key['publicKey'], $components['curve']) :
+            $components['curve']->multiplyPoint($components['curve']->getBasePoint(), $components['dA']);
+
+        return $components;
+    }
+
+    /**
+     * Break a public or private EdDSA key down into its constituent components
+     *
+     * @return array
+     */
+    private static function loadEdDSA(array $key)
+    {
+        $components = [];
+
+        if (isset($key['privateKey'])) {
+            $components['curve'] = $key['privateKeyAlgorithm']['algorithm'] == 'id-Ed25519' ? new Ed25519() : new Ed448();
+
+            // 0x04 == octet string
+            // 0x20 == length (32 bytes)
+            if (substr($key['privateKey'], 0, 2) != "\x04\x20") {
+                throw new \RuntimeException('The first two bytes of the private key field should be 0x0420');
+            }
+            $arr = $components['curve']->extractSecret(substr($key['privateKey'], 2));
+            $components['dA'] = $arr['dA'];
+            $components['secret'] = $arr['secret'];
+        }
+
+        if (isset($key['publicKey'])) {
+            if (!isset($components['curve'])) {
+                $components['curve'] = $key['publicKeyAlgorithm']['algorithm'] == 'id-Ed25519' ? new Ed25519() : new Ed448();
+            }
+
+            $components['QA'] = self::extractPoint($key['publicKey'], $components['curve']);
+        }
+
+        if (isset($key['privateKey']) && !isset($components['QA'])) {
+            $components['QA'] = $components['curve']->multiplyPoint($components['curve']->getBasePoint(), $components['dA']);
+        }
+
+        return $components;
+    }
+
+    /**
+     * Convert an EC public key to the appropriate format
+     *
+     * @param \phpseclib3\Crypt\EC\BaseCurves\Base $curve
+     * @param \phpseclib3\Math\Common\FiniteField\Integer[] $publicKey
+     * @param array $options optional
+     * @return string
+     */
+    public static function savePublicKey(BaseCurve $curve, array $publicKey, array $options = [])
+    {
+        self::initialize_static_variables();
+
+        if ($curve instanceof MontgomeryCurve) {
+            throw new UnsupportedCurveException('Montgomery Curves are not supported');
+        }
+
+        if ($curve instanceof TwistedEdwardsCurve) {
+            return self::wrapPublicKey(
+                $curve->encodePoint($publicKey),
+                null,
+                $curve instanceof Ed25519 ? 'id-Ed25519' : 'id-Ed448'
+            );
+        }
+
+        $params = new ASN1\Element(self::encodeParameters($curve, false, $options));
+
+        $key = "\4" . $publicKey[0]->toBytes() . $publicKey[1]->toBytes();
+
+        return self::wrapPublicKey($key, $params, 'id-ecPublicKey');
+    }
+
+    /**
+     * Convert a private key to the appropriate format.
+     *
+     * @param \phpseclib3\Math\BigInteger $privateKey
+     * @param \phpseclib3\Crypt\EC\BaseCurves\Base $curve
+     * @param \phpseclib3\Math\Common\FiniteField\Integer[] $publicKey
+     * @param string $secret optional
+     * @param string $password optional
+     * @param array $options optional
+     * @return string
+     */
+    public static function savePrivateKey(BigInteger $privateKey, BaseCurve $curve, array $publicKey, $secret = null, $password = '', array $options = [])
+    {
+        self::initialize_static_variables();
+
+        if ($curve instanceof MontgomeryCurve) {
+            throw new UnsupportedCurveException('Montgomery Curves are not supported');
+        }
+
+        if ($curve instanceof TwistedEdwardsCurve) {
+            return self::wrapPrivateKey(
+                "\x04\x20" . $secret,
+                [],
+                null,
+                $password,
+                $curve instanceof Ed25519 ? 'id-Ed25519' : 'id-Ed448'
+            );
+        }
+
+        $publicKey = "\4" . $publicKey[0]->toBytes() . $publicKey[1]->toBytes();
+
+        $params = new ASN1\Element(self::encodeParameters($curve, false, $options));
+
+        $key = [
+            'version' => 'ecPrivkeyVer1',
+            'privateKey' => $privateKey->toBytes(),
+            //'parameters' => $params,
+            'publicKey' => "\0" . $publicKey
+        ];
+
+        $key = ASN1::encodeDER($key, Maps\ECPrivateKey::MAP);
+
+        return self::wrapPrivateKey($key, [], $params, $password, 'id-ecPublicKey', '', $options);
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Keys/PuTTY.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Keys/PuTTY.php
new file mode 100644
index 0000000..866c883
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Keys/PuTTY.php
@@ -0,0 +1,138 @@
+<?php
+
+/**
+ * PuTTY Formatted EC Key Handler
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\EC\Formats\Keys;
+
+use phpseclib3\Common\Functions\Strings;
+use phpseclib3\Crypt\Common\Formats\Keys\PuTTY as Progenitor;
+use phpseclib3\Crypt\EC\BaseCurves\Base as BaseCurve;
+use phpseclib3\Crypt\EC\BaseCurves\TwistedEdwards as TwistedEdwardsCurve;
+use phpseclib3\Math\BigInteger;
+
+/**
+ * PuTTY Formatted EC Key Handler
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class PuTTY extends Progenitor
+{
+    use Common;
+
+    /**
+     * Public Handler
+     *
+     * @var string
+     */
+    const PUBLIC_HANDLER = 'phpseclib3\Crypt\EC\Formats\Keys\OpenSSH';
+
+    /**
+     * Supported Key Types
+     *
+     * @var array
+     */
+    protected static $types = [
+        'ecdsa-sha2-nistp256',
+        'ecdsa-sha2-nistp384',
+        'ecdsa-sha2-nistp521',
+        'ssh-ed25519'
+    ];
+
+    /**
+     * Break a public or private key down into its constituent components
+     *
+     * @param string $key
+     * @param string $password optional
+     * @return array
+     */
+    public static function load($key, $password = '')
+    {
+        $components = parent::load($key, $password);
+        if (!isset($components['private'])) {
+            return $components;
+        }
+
+        $private = $components['private'];
+
+        $temp = Strings::base64_encode(Strings::packSSH2('s', $components['type']) . $components['public']);
+        $components = OpenSSH::load($components['type'] . ' ' . $temp . ' ' . $components['comment']);
+
+        if ($components['curve'] instanceof TwistedEdwardsCurve) {
+            if (Strings::shift($private, 4) != "\0\0\0\x20") {
+                throw new \RuntimeException('Length of ssh-ed25519 key should be 32');
+            }
+            $arr = $components['curve']->extractSecret($private);
+            $components['dA'] = $arr['dA'];
+            $components['secret'] = $arr['secret'];
+        } else {
+            list($components['dA']) = Strings::unpackSSH2('i', $private);
+            $components['curve']->rangeCheck($components['dA']);
+        }
+
+        return $components;
+    }
+
+    /**
+     * Convert a private key to the appropriate format.
+     *
+     * @param \phpseclib3\Math\BigInteger $privateKey
+     * @param \phpseclib3\Crypt\EC\BaseCurves\Base $curve
+     * @param \phpseclib3\Math\Common\FiniteField\Integer[] $publicKey
+     * @param string $secret optional
+     * @param string $password optional
+     * @param array $options optional
+     * @return string
+     */
+    public static function savePrivateKey(BigInteger $privateKey, BaseCurve $curve, array $publicKey, $secret = null, $password = false, array $options = [])
+    {
+        self::initialize_static_variables();
+
+        $public = explode(' ', OpenSSH::savePublicKey($curve, $publicKey));
+        $name = $public[0];
+        $public = Strings::base64_decode($public[1]);
+        list(, $length) = unpack('N', Strings::shift($public, 4));
+        Strings::shift($public, $length);
+
+        // PuTTY pads private keys with a null byte per the following:
+        // https://github.com/github/putty/blob/a3d14d77f566a41fc61dfdc5c2e0e384c9e6ae8b/sshecc.c#L1926
+        if (!$curve instanceof TwistedEdwardsCurve) {
+            $private = $privateKey->toBytes();
+            if (!(strlen($privateKey->toBits()) & 7)) {
+                $private = "\0$private";
+            }
+        }
+
+        $private = $curve instanceof TwistedEdwardsCurve ?
+            Strings::packSSH2('s', $secret) :
+            Strings::packSSH2('s', $private);
+
+        return self::wrapPrivateKey($public, $private, $name, $password, $options);
+    }
+
+    /**
+     * Convert an EC public key to the appropriate format
+     *
+     * @param \phpseclib3\Crypt\EC\BaseCurves\Base $curve
+     * @param \phpseclib3\Math\Common\FiniteField[] $publicKey
+     * @return string
+     */
+    public static function savePublicKey(BaseCurve $curve, array $publicKey)
+    {
+        $public = explode(' ', OpenSSH::savePublicKey($curve, $publicKey));
+        $type = $public[0];
+        $public = Strings::base64_decode($public[1]);
+        list(, $length) = unpack('N', Strings::shift($public, 4));
+        Strings::shift($public, $length);
+
+        return self::wrapPublicKey($public, $type);
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Keys/XML.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Keys/XML.php
new file mode 100644
index 0000000..27d9218
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Keys/XML.php
@@ -0,0 +1,485 @@
+<?php
+
+/**
+ * XML Formatted EC Key Handler
+ *
+ * More info:
+ *
+ * https://www.w3.org/TR/xmldsig-core/#sec-ECKeyValue
+ * http://en.wikipedia.org/wiki/XML_Signature
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\EC\Formats\Keys;
+
+use phpseclib3\Common\Functions\Strings;
+use phpseclib3\Crypt\EC\BaseCurves\Base as BaseCurve;
+use phpseclib3\Crypt\EC\BaseCurves\Montgomery as MontgomeryCurve;
+use phpseclib3\Crypt\EC\BaseCurves\Prime as PrimeCurve;
+use phpseclib3\Crypt\EC\BaseCurves\TwistedEdwards as TwistedEdwardsCurve;
+use phpseclib3\Exception\BadConfigurationException;
+use phpseclib3\Exception\UnsupportedCurveException;
+use phpseclib3\Math\BigInteger;
+
+/**
+ * XML Formatted EC Key Handler
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class XML
+{
+    use Common;
+
+    /**
+     * Default namespace
+     *
+     * @var string
+     */
+    private static $namespace;
+
+    /**
+     * Flag for using RFC4050 syntax
+     *
+     * @var bool
+     */
+    private static $rfc4050 = false;
+
+    /**
+     * Break a public or private key down into its constituent components
+     *
+     * @param string $key
+     * @param string $password optional
+     * @return array
+     */
+    public static function load($key, $password = '')
+    {
+        self::initialize_static_variables();
+
+        if (!Strings::is_stringable($key)) {
+            throw new \UnexpectedValueException('Key should be a string - not a ' . gettype($key));
+        }
+
+        if (!class_exists('DOMDocument')) {
+            throw new BadConfigurationException('The dom extension is not setup correctly on this system');
+        }
+
+        $use_errors = libxml_use_internal_errors(true);
+
+        $temp = self::isolateNamespace($key, 'http://www.w3.org/2009/xmldsig11#');
+        if ($temp) {
+            $key = $temp;
+        }
+
+        $temp = self::isolateNamespace($key, 'http://www.w3.org/2001/04/xmldsig-more#');
+        if ($temp) {
+            $key = $temp;
+        }
+
+        $dom = new \DOMDocument();
+        if (substr($key, 0, 5) != '<?xml') {
+            $key = '<xml>' . $key . '</xml>';
+        }
+
+        if (!$dom->loadXML($key)) {
+            libxml_use_internal_errors($use_errors);
+            throw new \UnexpectedValueException('Key does not appear to contain XML');
+        }
+        $xpath = new \DOMXPath($dom);
+        libxml_use_internal_errors($use_errors);
+        $curve = self::loadCurveByParam($xpath);
+
+        $pubkey = self::query($xpath, 'publickey', 'Public Key is not present');
+
+        $QA = self::query($xpath, 'ecdsakeyvalue')->length ?
+            self::extractPointRFC4050($xpath, $curve) :
+            self::extractPoint("\0" . $pubkey, $curve);
+
+        libxml_use_internal_errors($use_errors);
+
+        return compact('curve', 'QA');
+    }
+
+    /**
+     * Case-insensitive xpath query
+     *
+     * @param \DOMXPath $xpath
+     * @param string $name
+     * @param string $error optional
+     * @param bool $decode optional
+     * @return \DOMNodeList
+     */
+    private static function query(\DOMXPath $xpath, $name, $error = null, $decode = true)
+    {
+        $query = '/';
+        $names = explode('/', $name);
+        foreach ($names as $name) {
+            $query .= "/*[translate(local-name(), 'ABCDEFGHIJKLMNOPQRSTUVWXYZ','abcdefghijklmnopqrstuvwxyz')='$name']";
+        }
+        $result = $xpath->query($query);
+        if (!isset($error)) {
+            return $result;
+        }
+
+        if (!$result->length) {
+            throw new \RuntimeException($error);
+        }
+        return $decode ? self::decodeValue($result->item(0)->textContent) : $result->item(0)->textContent;
+    }
+
+    /**
+     * Finds the first element in the relevant namespace, strips the namespacing and returns the XML for that element.
+     *
+     * @param string $xml
+     * @param string $ns
+     */
+    private static function isolateNamespace($xml, $ns)
+    {
+        $dom = new \DOMDocument();
+        if (!$dom->loadXML($xml)) {
+            return false;
+        }
+        $xpath = new \DOMXPath($dom);
+        $nodes = $xpath->query("//*[namespace::*[.='$ns'] and not(../namespace::*[.='$ns'])]");
+        if (!$nodes->length) {
+            return false;
+        }
+        $node = $nodes->item(0);
+        $ns_name = $node->lookupPrefix($ns);
+        if ($ns_name) {
+            $node->removeAttributeNS($ns, $ns_name);
+        }
+        return $dom->saveXML($node);
+    }
+
+    /**
+     * Decodes the value
+     *
+     * @param string $value
+     */
+    private static function decodeValue($value)
+    {
+        return Strings::base64_decode(str_replace(["\r", "\n", ' ', "\t"], '', $value));
+    }
+
+    /**
+     * Extract points from an XML document
+     *
+     * @param \DOMXPath $xpath
+     * @param \phpseclib3\Crypt\EC\BaseCurves\Base $curve
+     * @return object[]
+     */
+    private static function extractPointRFC4050(\DOMXPath $xpath, BaseCurve $curve)
+    {
+        $x = self::query($xpath, 'publickey/x');
+        $y = self::query($xpath, 'publickey/y');
+        if (!$x->length || !$x->item(0)->hasAttribute('Value')) {
+            throw new \RuntimeException('Public Key / X coordinate not found');
+        }
+        if (!$y->length || !$y->item(0)->hasAttribute('Value')) {
+            throw new \RuntimeException('Public Key / Y coordinate not found');
+        }
+        $point = [
+            $curve->convertInteger(new BigInteger($x->item(0)->getAttribute('Value'))),
+            $curve->convertInteger(new BigInteger($y->item(0)->getAttribute('Value')))
+        ];
+        if (!$curve->verifyPoint($point)) {
+            throw new \RuntimeException('Unable to verify that point exists on curve');
+        }
+        return $point;
+    }
+
+    /**
+     * Returns an instance of \phpseclib3\Crypt\EC\BaseCurves\Base based
+     * on the curve parameters
+     *
+     * @param \DomXPath $xpath
+     * @return \phpseclib3\Crypt\EC\BaseCurves\Base|false
+     */
+    private static function loadCurveByParam(\DOMXPath $xpath)
+    {
+        $namedCurve = self::query($xpath, 'namedcurve');
+        if ($namedCurve->length == 1) {
+            $oid = $namedCurve->item(0)->getAttribute('URN');
+            $oid = preg_replace('#[^\d.]#', '', $oid);
+            $name = array_search($oid, self::$curveOIDs);
+            if ($name === false) {
+                throw new UnsupportedCurveException('Curve with OID of ' . $oid . ' is not supported');
+            }
+
+            $curve = '\phpseclib3\Crypt\EC\Curves\\' . $name;
+            if (!class_exists($curve)) {
+                throw new UnsupportedCurveException('Named Curve of ' . $name . ' is not supported');
+            }
+            return new $curve();
+        }
+
+        $params = self::query($xpath, 'explicitparams');
+        if ($params->length) {
+            return self::loadCurveByParamRFC4050($xpath);
+        }
+
+        $params = self::query($xpath, 'ecparameters');
+        if (!$params->length) {
+            throw new \RuntimeException('No parameters are present');
+        }
+
+        $fieldTypes = [
+            'prime-field' => ['fieldid/prime/p'],
+            'gnb' => ['fieldid/gnb/m'],
+            'tnb' => ['fieldid/tnb/k'],
+            'pnb' => ['fieldid/pnb/k1', 'fieldid/pnb/k2', 'fieldid/pnb/k3'],
+            'unknown' => []
+        ];
+
+        foreach ($fieldTypes as $type => $queries) {
+            foreach ($queries as $query) {
+                $result = self::query($xpath, $query);
+                if (!$result->length) {
+                    continue 2;
+                }
+                $param = preg_replace('#.*/#', '', $query);
+                $$param = self::decodeValue($result->item(0)->textContent);
+            }
+            break;
+        }
+
+        $a = self::query($xpath, 'curve/a', 'A coefficient is not present');
+        $b = self::query($xpath, 'curve/b', 'B coefficient is not present');
+        $base = self::query($xpath, 'base', 'Base point is not present');
+        $order = self::query($xpath, 'order', 'Order is not present');
+
+        switch ($type) {
+            case 'prime-field':
+                $curve = new PrimeCurve();
+                $curve->setModulo(new BigInteger($p, 256));
+                $curve->setCoefficients(
+                    new BigInteger($a, 256),
+                    new BigInteger($b, 256)
+                );
+                $point = self::extractPoint("\0" . $base, $curve);
+                $curve->setBasePoint(...$point);
+                $curve->setOrder(new BigInteger($order, 256));
+                return $curve;
+            case 'gnb':
+            case 'tnb':
+            case 'pnb':
+            default:
+                throw new UnsupportedCurveException('Field Type of ' . $type . ' is not supported');
+        }
+    }
+
+    /**
+     * Returns an instance of \phpseclib3\Crypt\EC\BaseCurves\Base based
+     * on the curve parameters
+     *
+     * @param \DomXPath $xpath
+     * @return \phpseclib3\Crypt\EC\BaseCurves\Base|false
+     */
+    private static function loadCurveByParamRFC4050(\DOMXPath $xpath)
+    {
+        $fieldTypes = [
+            'prime-field' => ['primefieldparamstype/p'],
+            'unknown' => []
+        ];
+
+        foreach ($fieldTypes as $type => $queries) {
+            foreach ($queries as $query) {
+                $result = self::query($xpath, $query);
+                if (!$result->length) {
+                    continue 2;
+                }
+                $param = preg_replace('#.*/#', '', $query);
+                $$param = $result->item(0)->textContent;
+            }
+            break;
+        }
+
+        $a = self::query($xpath, 'curveparamstype/a', 'A coefficient is not present', false);
+        $b = self::query($xpath, 'curveparamstype/b', 'B coefficient is not present', false);
+        $x = self::query($xpath, 'basepointparams/basepoint/ecpointtype/x', 'Base Point X is not present', false);
+        $y = self::query($xpath, 'basepointparams/basepoint/ecpointtype/y', 'Base Point Y is not present', false);
+        $order = self::query($xpath, 'order', 'Order is not present', false);
+
+        switch ($type) {
+            case 'prime-field':
+                $curve = new PrimeCurve();
+
+                $p = str_replace(["\r", "\n", ' ', "\t"], '', $p);
+                $curve->setModulo(new BigInteger($p));
+
+                $a = str_replace(["\r", "\n", ' ', "\t"], '', $a);
+                $b = str_replace(["\r", "\n", ' ', "\t"], '', $b);
+                $curve->setCoefficients(
+                    new BigInteger($a),
+                    new BigInteger($b)
+                );
+
+                $x = str_replace(["\r", "\n", ' ', "\t"], '', $x);
+                $y = str_replace(["\r", "\n", ' ', "\t"], '', $y);
+                $curve->setBasePoint(
+                    new BigInteger($x),
+                    new BigInteger($y)
+                );
+
+                $order = str_replace(["\r", "\n", ' ', "\t"], '', $order);
+                $curve->setOrder(new BigInteger($order));
+                return $curve;
+            default:
+                throw new UnsupportedCurveException('Field Type of ' . $type . ' is not supported');
+        }
+    }
+
+    /**
+     * Sets the namespace. dsig11 is the most common one.
+     *
+     * Set to null to unset. Used only for creating public keys.
+     *
+     * @param string $namespace
+     */
+    public static function setNamespace($namespace)
+    {
+        self::$namespace = $namespace;
+    }
+
+    /**
+     * Uses the XML syntax specified in https://tools.ietf.org/html/rfc4050
+     */
+    public static function enableRFC4050Syntax()
+    {
+        self::$rfc4050 = true;
+    }
+
+    /**
+     * Uses the XML syntax specified in https://www.w3.org/TR/xmldsig-core/#sec-ECParameters
+     */
+    public static function disableRFC4050Syntax()
+    {
+        self::$rfc4050 = false;
+    }
+
+    /**
+     * Convert a public key to the appropriate format
+     *
+     * @param \phpseclib3\Crypt\EC\BaseCurves\Base $curve
+     * @param \phpseclib3\Math\Common\FiniteField\Integer[] $publicKey
+     * @param array $options optional
+     * @return string
+     */
+    public static function savePublicKey(BaseCurve $curve, array $publicKey, array $options = [])
+    {
+        self::initialize_static_variables();
+
+        if ($curve instanceof TwistedEdwardsCurve || $curve instanceof MontgomeryCurve) {
+            throw new UnsupportedCurveException('TwistedEdwards and Montgomery Curves are not supported');
+        }
+
+        if (empty(static::$namespace)) {
+            $pre = $post = '';
+        } else {
+            $pre = static::$namespace . ':';
+            $post = ':' . static::$namespace;
+        }
+
+        if (self::$rfc4050) {
+            return '<' . $pre . 'ECDSAKeyValue xmlns' . $post . '="http://www.w3.org/2001/04/xmldsig-more#">' . "\r\n" .
+                   self::encodeXMLParameters($curve, $pre, $options) . "\r\n" .
+                   '<' . $pre . 'PublicKey>' . "\r\n" .
+                   '<' . $pre . 'X Value="' . $publicKey[0] . '" />' . "\r\n" .
+                   '<' . $pre . 'Y Value="' . $publicKey[1] . '" />' . "\r\n" .
+                   '</' . $pre . 'PublicKey>' . "\r\n" .
+                   '</' . $pre . 'ECDSAKeyValue>';
+        }
+
+        $publicKey = "\4" . $publicKey[0]->toBytes() . $publicKey[1]->toBytes();
+
+        return '<' . $pre . 'ECDSAKeyValue xmlns' . $post . '="http://www.w3.org/2009/xmldsig11#">' . "\r\n" .
+               self::encodeXMLParameters($curve, $pre, $options) . "\r\n" .
+               '<' . $pre . 'PublicKey>' . Strings::base64_encode($publicKey) . '</' . $pre . 'PublicKey>' . "\r\n" .
+               '</' . $pre . 'ECDSAKeyValue>';
+    }
+
+    /**
+     * Encode Parameters
+     *
+     * @param \phpseclib3\Crypt\EC\BaseCurves\Base $curve
+     * @param string $pre
+     * @param array $options optional
+     * @return string|false
+     */
+    private static function encodeXMLParameters(BaseCurve $curve, $pre, array $options = [])
+    {
+        $result = self::encodeParameters($curve, true, $options);
+
+        if (isset($result['namedCurve'])) {
+            $namedCurve = '<' . $pre . 'NamedCurve URI="urn:oid:' . self::$curveOIDs[$result['namedCurve']] . '" />';
+            return self::$rfc4050 ?
+                '<DomainParameters>' . str_replace('URI', 'URN', $namedCurve) . '</DomainParameters>' :
+                $namedCurve;
+        }
+
+        if (self::$rfc4050) {
+            $xml = '<' . $pre . 'ExplicitParams>' . "\r\n" .
+                  '<' . $pre . 'FieldParams>' . "\r\n";
+            $temp = $result['specifiedCurve'];
+            switch ($temp['fieldID']['fieldType']) {
+                case 'prime-field':
+                    $xml .= '<' . $pre . 'PrimeFieldParamsType>' . "\r\n" .
+                           '<' . $pre . 'P>' . $temp['fieldID']['parameters'] . '</' . $pre . 'P>' . "\r\n" .
+                           '</' . $pre . 'PrimeFieldParamsType>' . "\r\n";
+                    $a = $curve->getA();
+                    $b = $curve->getB();
+                    list($x, $y) = $curve->getBasePoint();
+                    break;
+                default:
+                    throw new UnsupportedCurveException('Field Type of ' . $temp['fieldID']['fieldType'] . ' is not supported');
+            }
+            $xml .= '</' . $pre . 'FieldParams>' . "\r\n" .
+                   '<' . $pre . 'CurveParamsType>' . "\r\n" .
+                   '<' . $pre . 'A>' . $a . '</' . $pre . 'A>' . "\r\n" .
+                   '<' . $pre . 'B>' . $b . '</' . $pre . 'B>' . "\r\n" .
+                   '</' . $pre . 'CurveParamsType>' . "\r\n" .
+                   '<' . $pre . 'BasePointParams>' . "\r\n" .
+                   '<' . $pre . 'BasePoint>' . "\r\n" .
+                   '<' . $pre . 'ECPointType>' . "\r\n" .
+                   '<' . $pre . 'X>' . $x . '</' . $pre . 'X>' . "\r\n" .
+                   '<' . $pre . 'Y>' . $y . '</' . $pre . 'Y>' . "\r\n" .
+                   '</' . $pre . 'ECPointType>' . "\r\n" .
+                   '</' . $pre . 'BasePoint>' . "\r\n" .
+                   '<' . $pre . 'Order>' . $curve->getOrder() . '</' . $pre . 'Order>' . "\r\n" .
+                   '</' . $pre . 'BasePointParams>' . "\r\n" .
+                   '</' . $pre . 'ExplicitParams>' . "\r\n";
+
+            return $xml;
+        }
+
+        if (isset($result['specifiedCurve'])) {
+            $xml = '<' . $pre . 'ECParameters>' . "\r\n" .
+                   '<' . $pre . 'FieldID>' . "\r\n";
+            $temp = $result['specifiedCurve'];
+            switch ($temp['fieldID']['fieldType']) {
+                case 'prime-field':
+                    $xml .= '<' . $pre . 'Prime>' . "\r\n" .
+                           '<' . $pre . 'P>' . Strings::base64_encode($temp['fieldID']['parameters']->toBytes()) . '</' . $pre . 'P>' . "\r\n" .
+                           '</' . $pre . 'Prime>' . "\r\n" ;
+                    break;
+                default:
+                    throw new UnsupportedCurveException('Field Type of ' . $temp['fieldID']['fieldType'] . ' is not supported');
+            }
+            $xml .= '</' . $pre . 'FieldID>' . "\r\n" .
+                   '<' . $pre . 'Curve>' . "\r\n" .
+                   '<' . $pre . 'A>' . Strings::base64_encode($temp['curve']['a']) . '</' . $pre . 'A>' . "\r\n" .
+                   '<' . $pre . 'B>' . Strings::base64_encode($temp['curve']['b']) . '</' . $pre . 'B>' . "\r\n" .
+                   '</' . $pre . 'Curve>' . "\r\n" .
+                   '<' . $pre . 'Base>' . Strings::base64_encode($temp['base']) . '</' . $pre . 'Base>' . "\r\n" .
+                   '<' . $pre . 'Order>' . Strings::base64_encode($temp['order']) . '</' . $pre . 'Order>' . "\r\n" .
+                   '</' . $pre . 'ECParameters>';
+            return $xml;
+        }
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Keys/libsodium.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Keys/libsodium.php
new file mode 100644
index 0000000..2be6ba5
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Keys/libsodium.php
@@ -0,0 +1,116 @@
+<?php
+
+/**
+ * libsodium Key Handler
+ *
+ * Different NaCl implementations store the key differently.
+ * https://blog.mozilla.org/warner/2011/11/29/ed25519-keys/ elaborates.
+ * libsodium appears to use the same format as SUPERCOP.
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\EC\Formats\Keys;
+
+use phpseclib3\Crypt\EC\Curves\Ed25519;
+use phpseclib3\Exception\UnsupportedFormatException;
+use phpseclib3\Math\BigInteger;
+
+/**
+ * libsodium Key Handler
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class libsodium
+{
+    use Common;
+
+    /**
+     * Is invisible flag
+     *
+     */
+    const IS_INVISIBLE = true;
+
+    /**
+     * Break a public or private key down into its constituent components
+     *
+     * @param string $key
+     * @param string $password optional
+     * @return array
+     */
+    public static function load($key, $password = '')
+    {
+        switch (strlen($key)) {
+            case 32:
+                $public = $key;
+                break;
+            case 64:
+                $private = substr($key, 0, 32);
+                $public = substr($key, -32);
+                break;
+            case 96:
+                $public = substr($key, -32);
+                if (substr($key, 32, 32) != $public) {
+                    throw new \RuntimeException('Keys with 96 bytes should have the 2nd and 3rd set of 32 bytes match');
+                }
+                $private = substr($key, 0, 32);
+                break;
+            default:
+                throw new \RuntimeException('libsodium keys need to either be 32 bytes long, 64 bytes long or 96 bytes long');
+        }
+
+        $curve = new Ed25519();
+        $components = ['curve' => $curve];
+        if (isset($private)) {
+            $arr = $curve->extractSecret($private);
+            $components['dA'] = $arr['dA'];
+            $components['secret'] = $arr['secret'];
+        }
+        $components['QA'] = isset($public) ?
+            self::extractPoint($public, $curve) :
+            $curve->multiplyPoint($curve->getBasePoint(), $components['dA']);
+
+        return $components;
+    }
+
+    /**
+     * Convert an EC public key to the appropriate format
+     *
+     * @param \phpseclib3\Crypt\EC\Curves\Ed25519 $curve
+     * @param \phpseclib3\Math\Common\FiniteField\Integer[] $publicKey
+     * @return string
+     */
+    public static function savePublicKey(Ed25519 $curve, array $publicKey)
+    {
+        return $curve->encodePoint($publicKey);
+    }
+
+    /**
+     * Convert a private key to the appropriate format.
+     *
+     * @param \phpseclib3\Math\BigInteger $privateKey
+     * @param \phpseclib3\Crypt\EC\Curves\Ed25519 $curve
+     * @param \phpseclib3\Math\Common\FiniteField\Integer[] $publicKey
+     * @param string $secret optional
+     * @param string $password optional
+     * @return string
+     */
+    public static function savePrivateKey(BigInteger $privateKey, Ed25519 $curve, array $publicKey, $secret = null, $password = '')
+    {
+        if (!isset($secret)) {
+            throw new \RuntimeException('Private Key does not have a secret set');
+        }
+        if (strlen($secret) != 32) {
+            throw new \RuntimeException('Private Key secret is not of the correct length');
+        }
+        if (!empty($password) && is_string($password)) {
+            throw new UnsupportedFormatException('libsodium private keys do not support encryption');
+        }
+        return $secret . $curve->encodePoint($publicKey);
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Signature/ASN1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Signature/ASN1.php
new file mode 100644
index 0000000..d2a80a1
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Signature/ASN1.php
@@ -0,0 +1,62 @@
+<?php
+
+/**
+ * ASN1 Signature Handler
+ *
+ * PHP version 5
+ *
+ * Handles signatures in the format described in
+ * https://tools.ietf.org/html/rfc3279#section-2.2.3
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\EC\Formats\Signature;
+
+use phpseclib3\File\ASN1 as Encoder;
+use phpseclib3\File\ASN1\Maps\EcdsaSigValue;
+use phpseclib3\Math\BigInteger;
+
+/**
+ * ASN1 Signature Handler
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class ASN1
+{
+    /**
+     * Loads a signature
+     *
+     * @param string $sig
+     * @return array
+     */
+    public static function load($sig)
+    {
+        if (!is_string($sig)) {
+            return false;
+        }
+
+        $decoded = Encoder::decodeBER($sig);
+        if (empty($decoded)) {
+            return false;
+        }
+        $components = Encoder::asn1map($decoded[0], EcdsaSigValue::MAP);
+
+        return $components;
+    }
+
+    /**
+     * Returns a signature in the appropriate format
+     *
+     * @param \phpseclib3\Math\BigInteger $r
+     * @param \phpseclib3\Math\BigInteger $s
+     * @return string
+     */
+    public static function save(BigInteger $r, BigInteger $s)
+    {
+        return Encoder::encodeDER(compact('r', 's'), EcdsaSigValue::MAP);
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Signature/IEEE.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Signature/IEEE.php
new file mode 100644
index 0000000..69139da
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Signature/IEEE.php
@@ -0,0 +1,66 @@
+<?php
+
+/**
+ * IEEE P1363 Signature Handler
+ *
+ * PHP version 5
+ *
+ * Handles signatures in the format described in
+ * https://standards.ieee.org/ieee/1363/2049/ and
+ * https://developer.mozilla.org/en-US/docs/Web/API/SubtleCrypto/sign#ecdsa
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\EC\Formats\Signature;
+
+use phpseclib3\Math\BigInteger;
+
+/**
+ * ASN1 Signature Handler
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class IEEE
+{
+    /**
+     * Loads a signature
+     *
+     * @param string $sig
+     * @return array
+     */
+    public static function load($sig)
+    {
+        if (!is_string($sig)) {
+            return false;
+        }
+
+        $len = strlen($sig);
+        if ($len & 1) {
+            return false;
+        }
+
+        $r = new BigInteger(substr($sig, 0, $len >> 1), 256);
+        $s = new BigInteger(substr($sig, $len >> 1), 256);
+
+        return compact('r', 's');
+    }
+
+    /**
+     * Returns a signature in the appropriate format
+     *
+     * @param \phpseclib3\Math\BigInteger $r
+     * @param \phpseclib3\Math\BigInteger $s
+     * @return string
+     */
+    public static function save(BigInteger $r, BigInteger $s)
+    {
+        $r = $r->toBytes();
+        $s = $s->toBytes();
+        $len = max(strlen($r), strlen($s));
+        return str_pad($r, $len, "\0", STR_PAD_LEFT) . str_pad($s, $len, "\0", STR_PAD_LEFT);
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Signature/Raw.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Signature/Raw.php
new file mode 100644
index 0000000..7e4b47f
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Signature/Raw.php
@@ -0,0 +1,25 @@
+<?php
+
+/**
+ * Raw EC Signature Handler
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\EC\Formats\Signature;
+
+use phpseclib3\Crypt\Common\Formats\Signature\Raw as Progenitor;
+
+/**
+ * Raw DSA Signature Handler
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class Raw extends Progenitor
+{
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Signature/SSH2.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Signature/SSH2.php
new file mode 100644
index 0000000..e064442
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Signature/SSH2.php
@@ -0,0 +1,94 @@
+<?php
+
+/**
+ * SSH2 Signature Handler
+ *
+ * PHP version 5
+ *
+ * Handles signatures in the format used by SSH2
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\EC\Formats\Signature;
+
+use phpseclib3\Common\Functions\Strings;
+use phpseclib3\Math\BigInteger;
+
+/**
+ * SSH2 Signature Handler
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class SSH2
+{
+    /**
+     * Loads a signature
+     *
+     * @param string $sig
+     * @return mixed
+     */
+    public static function load($sig)
+    {
+        if (!is_string($sig)) {
+            return false;
+        }
+
+        $result = Strings::unpackSSH2('ss', $sig);
+        if ($result === false) {
+            return false;
+        }
+        list($type, $blob) = $result;
+        switch ($type) {
+            // see https://tools.ietf.org/html/rfc5656#section-3.1.2
+            case 'ecdsa-sha2-nistp256':
+            case 'ecdsa-sha2-nistp384':
+            case 'ecdsa-sha2-nistp521':
+                break;
+            default:
+                return false;
+        }
+
+        $result = Strings::unpackSSH2('ii', $blob);
+        if ($result === false) {
+            return false;
+        }
+
+        return [
+            'r' => $result[0],
+            's' => $result[1]
+        ];
+    }
+
+    /**
+     * Returns a signature in the appropriate format
+     *
+     * @param \phpseclib3\Math\BigInteger $r
+     * @param \phpseclib3\Math\BigInteger $s
+     * @param string $curve
+     * @return string
+     */
+    public static function save(BigInteger $r, BigInteger $s, $curve)
+    {
+        switch ($curve) {
+            case 'secp256r1':
+                $curve = 'nistp256';
+                break;
+            case 'secp384r1':
+                $curve = 'nistp384';
+                break;
+            case 'secp521r1':
+                $curve = 'nistp521';
+                break;
+            default:
+                return false;
+        }
+
+        $blob = Strings::packSSH2('ii', $r, $s);
+
+        return Strings::packSSH2('ss', 'ecdsa-sha2-' . $curve, $blob);
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Parameters.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Parameters.php
new file mode 100644
index 0000000..c0ed64a
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Parameters.php
@@ -0,0 +1,36 @@
+<?php
+
+/**
+ * EC Parameters
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\EC;
+
+use phpseclib3\Crypt\EC;
+
+/**
+ * EC Parameters
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+final class Parameters extends EC
+{
+    /**
+     * Returns the parameters
+     *
+     * @param string $type
+     * @param array $options optional
+     * @return string
+     */
+    public function toString($type = 'PKCS1', array $options = [])
+    {
+        $type = self::validatePlugin('Keys', 'PKCS1', 'saveParameters');
+
+        return $type::saveParameters($this->curve, $options);
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/PrivateKey.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/PrivateKey.php
new file mode 100644
index 0000000..5988696
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/PrivateKey.php
@@ -0,0 +1,256 @@
+<?php
+
+/**
+ * EC Private Key
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\EC;
+
+use phpseclib3\Common\Functions\Strings;
+use phpseclib3\Crypt\Common;
+use phpseclib3\Crypt\EC;
+use phpseclib3\Crypt\EC\BaseCurves\Montgomery as MontgomeryCurve;
+use phpseclib3\Crypt\EC\BaseCurves\TwistedEdwards as TwistedEdwardsCurve;
+use phpseclib3\Crypt\EC\Curves\Curve25519;
+use phpseclib3\Crypt\EC\Curves\Ed25519;
+use phpseclib3\Crypt\EC\Formats\Keys\PKCS1;
+use phpseclib3\Crypt\EC\Formats\Signature\ASN1 as ASN1Signature;
+use phpseclib3\Crypt\Hash;
+use phpseclib3\Exception\UnsupportedOperationException;
+use phpseclib3\Math\BigInteger;
+
+/**
+ * EC Private Key
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+final class PrivateKey extends EC implements Common\PrivateKey
+{
+    use Common\Traits\PasswordProtected;
+
+    /**
+     * Private Key dA
+     *
+     * sign() converts this to a BigInteger so one might wonder why this is a FiniteFieldInteger instead of
+     * a BigInteger. That's because a FiniteFieldInteger, when converted to a byte string, is null padded by
+     * a certain amount whereas a BigInteger isn't.
+     *
+     * @var object
+     */
+    protected $dA;
+
+    /**
+     * @var string
+     */
+    protected $secret;
+
+    /**
+     * Multiplies an encoded point by the private key
+     *
+     * Used by ECDH
+     *
+     * @param string $coordinates
+     * @return string
+     */
+    public function multiply($coordinates)
+    {
+        if ($this->curve instanceof MontgomeryCurve) {
+            if ($this->curve instanceof Curve25519 && self::$engines['libsodium']) {
+                return sodium_crypto_scalarmult($this->dA->toBytes(), $coordinates);
+            }
+
+            $point = [$this->curve->convertInteger(new BigInteger(strrev($coordinates), 256))];
+            $point = $this->curve->multiplyPoint($point, $this->dA);
+            return strrev($point[0]->toBytes(true));
+        }
+        if (!$this->curve instanceof TwistedEdwardsCurve) {
+            $coordinates = "\0$coordinates";
+        }
+        $point = PKCS1::extractPoint($coordinates, $this->curve);
+        $point = $this->curve->multiplyPoint($point, $this->dA);
+        if ($this->curve instanceof TwistedEdwardsCurve) {
+            return $this->curve->encodePoint($point);
+        }
+        if (empty($point)) {
+            throw new \RuntimeException('The infinity point is invalid');
+        }
+        return "\4" . $point[0]->toBytes(true) . $point[1]->toBytes(true);
+    }
+
+    /**
+     * Create a signature
+     *
+     * @see self::verify()
+     * @param string $message
+     * @return mixed
+     */
+    public function sign($message)
+    {
+        if ($this->curve instanceof MontgomeryCurve) {
+            throw new UnsupportedOperationException('Montgomery Curves cannot be used to create signatures');
+        }
+
+        $dA = $this->dA;
+        $order = $this->curve->getOrder();
+
+        $shortFormat = $this->shortFormat;
+        $format = $this->sigFormat;
+        if ($format === false) {
+            return false;
+        }
+
+        if ($this->curve instanceof TwistedEdwardsCurve) {
+            if ($this->curve instanceof Ed25519 && self::$engines['libsodium'] && !isset($this->context)) {
+                $result = sodium_crypto_sign_detached($message, $this->withPassword()->toString('libsodium'));
+                return $shortFormat == 'SSH2' ? Strings::packSSH2('ss', 'ssh-' . strtolower($this->getCurve()), $result) : $result;
+            }
+
+            // contexts (Ed25519ctx) are supported but prehashing (Ed25519ph) is not.
+            // quoting https://tools.ietf.org/html/rfc8032#section-8.5 ,
+            // "The Ed25519ph and Ed448ph variants ... SHOULD NOT be used"
+            $A = $this->curve->encodePoint($this->QA);
+            $curve = $this->curve;
+            $hash = new Hash($curve::HASH);
+
+            $secret = substr($hash->hash($this->secret), $curve::SIZE);
+
+            if ($curve instanceof Ed25519) {
+                $dom = !isset($this->context) ? '' :
+                    'SigEd25519 no Ed25519 collisions' . "\0" . chr(strlen($this->context)) . $this->context;
+            } else {
+                $context = isset($this->context) ? $this->context : '';
+                $dom = 'SigEd448' . "\0" . chr(strlen($context)) . $context;
+            }
+            // SHA-512(dom2(F, C) || prefix || PH(M))
+            $r = $hash->hash($dom . $secret . $message);
+            $r = strrev($r);
+            $r = new BigInteger($r, 256);
+            list(, $r) = $r->divide($order);
+            $R = $curve->multiplyPoint($curve->getBasePoint(), $r);
+            $R = $curve->encodePoint($R);
+            $k = $hash->hash($dom . $R . $A . $message);
+            $k = strrev($k);
+            $k = new BigInteger($k, 256);
+            list(, $k) = $k->divide($order);
+            $S = $k->multiply($dA)->add($r);
+            list(, $S) = $S->divide($order);
+            $S = str_pad(strrev($S->toBytes()), $curve::SIZE, "\0");
+            return $shortFormat == 'SSH2' ? Strings::packSSH2('ss', 'ssh-' . strtolower($this->getCurve()), $R . $S) : $R . $S;
+        }
+
+        if (self::$engines['OpenSSL'] && in_array($this->hash->getHash(), openssl_get_md_methods())) {
+            $signature = '';
+            // altho PHP's OpenSSL bindings only supported EC key creation in PHP 7.1 they've long
+            // supported signing / verification
+            // we use specified curves to avoid issues with OpenSSL possibly not supporting a given named curve;
+            // doing this may mean some curve-specific optimizations can't be used but idk if OpenSSL even
+            // has curve-specific optimizations
+            $result = openssl_sign($message, $signature, $this->withPassword()->toString('PKCS8', ['namedCurve' => false]), $this->hash->getHash());
+
+            if ($result) {
+                if ($shortFormat == 'ASN1') {
+                    return $signature;
+                }
+
+                extract(ASN1Signature::load($signature));
+
+                return $shortFormat == 'SSH2' ? $format::save($r, $s, $this->getCurve()) : $format::save($r, $s);
+            }
+        }
+
+        $e = $this->hash->hash($message);
+        $e = new BigInteger($e, 256);
+
+        $Ln = $this->hash->getLength() - $order->getLength();
+        $z = $Ln > 0 ? $e->bitwise_rightShift($Ln) : $e;
+
+        while (true) {
+            $k = BigInteger::randomRange(self::$one, $order->subtract(self::$one));
+            list($x, $y) = $this->curve->multiplyPoint($this->curve->getBasePoint(), $k);
+            $x = $x->toBigInteger();
+            list(, $r) = $x->divide($order);
+            if ($r->equals(self::$zero)) {
+                continue;
+            }
+            $kinv = $k->modInverse($order);
+            $temp = $z->add($dA->multiply($r));
+            $temp = $kinv->multiply($temp);
+            list(, $s) = $temp->divide($order);
+            if (!$s->equals(self::$zero)) {
+                break;
+            }
+        }
+
+        // the following is an RFC6979 compliant implementation of deterministic ECDSA
+        // it's unused because it's mainly intended for use when a good CSPRNG isn't
+        // available. if phpseclib's CSPRNG isn't good then even key generation is
+        // suspect
+        /*
+        // if this were actually being used it'd probably be better if this lived in load() and createKey()
+        $this->q = $this->curve->getOrder();
+        $dA = $this->dA->toBigInteger();
+        $this->x = $dA;
+
+        $h1 = $this->hash->hash($message);
+        $k = $this->computek($h1);
+        list($x, $y) = $this->curve->multiplyPoint($this->curve->getBasePoint(), $k);
+        $x = $x->toBigInteger();
+        list(, $r) = $x->divide($this->q);
+        $kinv = $k->modInverse($this->q);
+        $h1 = $this->bits2int($h1);
+        $temp = $h1->add($dA->multiply($r));
+        $temp = $kinv->multiply($temp);
+        list(, $s) = $temp->divide($this->q);
+        */
+
+        return $shortFormat == 'SSH2' ? $format::save($r, $s, $this->getCurve()) : $format::save($r, $s);
+    }
+
+    /**
+     * Returns the private key
+     *
+     * @param string $type
+     * @param array $options optional
+     * @return string
+     */
+    public function toString($type, array $options = [])
+    {
+        $type = self::validatePlugin('Keys', $type, 'savePrivateKey');
+
+        return $type::savePrivateKey($this->dA, $this->curve, $this->QA, $this->secret, $this->password, $options);
+    }
+
+    /**
+     * Returns the public key
+     *
+     * @see self::getPrivateKey()
+     * @return mixed
+     */
+    public function getPublicKey()
+    {
+        $format = 'PKCS8';
+        if ($this->curve instanceof MontgomeryCurve) {
+            $format = 'MontgomeryPublic';
+        }
+
+        $type = self::validatePlugin('Keys', $format, 'savePublicKey');
+
+        $key = $type::savePublicKey($this->curve, $this->QA);
+        $key = EC::loadFormat($format, $key);
+        if ($this->curve instanceof MontgomeryCurve) {
+            return $key;
+        }
+        $key = $key
+            ->withHash($this->hash->getHash())
+            ->withSignatureFormat($this->shortFormat);
+        if ($this->curve instanceof TwistedEdwardsCurve) {
+            $key = $key->withContext($this->context);
+        }
+        return $key;
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/PublicKey.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/PublicKey.php
new file mode 100644
index 0000000..4558ce3
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/PublicKey.php
@@ -0,0 +1,172 @@
+<?php
+
+/**
+ * EC Public Key
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\EC;
+
+use phpseclib3\Common\Functions\Strings;
+use phpseclib3\Crypt\Common;
+use phpseclib3\Crypt\EC;
+use phpseclib3\Crypt\EC\BaseCurves\Montgomery as MontgomeryCurve;
+use phpseclib3\Crypt\EC\BaseCurves\TwistedEdwards as TwistedEdwardsCurve;
+use phpseclib3\Crypt\EC\Curves\Ed25519;
+use phpseclib3\Crypt\EC\Formats\Keys\PKCS1;
+use phpseclib3\Crypt\EC\Formats\Signature\ASN1 as ASN1Signature;
+use phpseclib3\Crypt\Hash;
+use phpseclib3\Exception\UnsupportedOperationException;
+use phpseclib3\Math\BigInteger;
+
+/**
+ * EC Public Key
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+final class PublicKey extends EC implements Common\PublicKey
+{
+    use Common\Traits\Fingerprint;
+
+    /**
+     * Verify a signature
+     *
+     * @see self::verify()
+     * @param string $message
+     * @param string $signature
+     * @return mixed
+     */
+    public function verify($message, $signature)
+    {
+        if ($this->curve instanceof MontgomeryCurve) {
+            throw new UnsupportedOperationException('Montgomery Curves cannot be used to create signatures');
+        }
+
+        $shortFormat = $this->shortFormat;
+        $format = $this->sigFormat;
+        if ($format === false) {
+            return false;
+        }
+
+        $order = $this->curve->getOrder();
+
+        if ($this->curve instanceof TwistedEdwardsCurve) {
+            if ($shortFormat == 'SSH2') {
+                list(, $signature) = Strings::unpackSSH2('ss', $signature);
+            }
+
+            if ($this->curve instanceof Ed25519 && self::$engines['libsodium'] && !isset($this->context)) {
+                return sodium_crypto_sign_verify_detached($signature, $message, $this->toString('libsodium'));
+            }
+
+            $curve = $this->curve;
+            if (strlen($signature) != 2 * $curve::SIZE) {
+                return false;
+            }
+
+            $R = substr($signature, 0, $curve::SIZE);
+            $S = substr($signature, $curve::SIZE);
+
+            try {
+                $R = PKCS1::extractPoint($R, $curve);
+                $R = $this->curve->convertToInternal($R);
+            } catch (\Exception $e) {
+                return false;
+            }
+
+            $S = strrev($S);
+            $S = new BigInteger($S, 256);
+
+            if ($S->compare($order) >= 0) {
+                return false;
+            }
+
+            $A = $curve->encodePoint($this->QA);
+
+            if ($curve instanceof Ed25519) {
+                $dom2 = !isset($this->context) ? '' :
+                    'SigEd25519 no Ed25519 collisions' . "\0" . chr(strlen($this->context)) . $this->context;
+            } else {
+                $context = isset($this->context) ? $this->context : '';
+                $dom2 = 'SigEd448' . "\0" . chr(strlen($context)) . $context;
+            }
+
+            $hash = new Hash($curve::HASH);
+            $k = $hash->hash($dom2 . substr($signature, 0, $curve::SIZE) . $A . $message);
+            $k = strrev($k);
+            $k = new BigInteger($k, 256);
+            list(, $k) = $k->divide($order);
+
+            $qa = $curve->convertToInternal($this->QA);
+
+            $lhs = $curve->multiplyPoint($curve->getBasePoint(), $S);
+            $rhs = $curve->multiplyPoint($qa, $k);
+            $rhs = $curve->addPoint($rhs, $R);
+            $rhs = $curve->convertToAffine($rhs);
+
+            return $lhs[0]->equals($rhs[0]) && $lhs[1]->equals($rhs[1]);
+        }
+
+        $params = $format::load($signature);
+        if ($params === false || count($params) != 2) {
+            return false;
+        }
+        extract($params);
+
+        if (self::$engines['OpenSSL'] && in_array($this->hash->getHash(), openssl_get_md_methods())) {
+            $sig = $format != 'ASN1' ? ASN1Signature::save($r, $s) : $signature;
+
+            $result = openssl_verify($message, $sig, $this->toString('PKCS8', ['namedCurve' => false]), $this->hash->getHash());
+
+            if ($result != -1) {
+                return (bool) $result;
+            }
+        }
+
+        $n_1 = $order->subtract(self::$one);
+        if (!$r->between(self::$one, $n_1) || !$s->between(self::$one, $n_1)) {
+            return false;
+        }
+
+        $e = $this->hash->hash($message);
+        $e = new BigInteger($e, 256);
+
+        $Ln = $this->hash->getLength() - $order->getLength();
+        $z = $Ln > 0 ? $e->bitwise_rightShift($Ln) : $e;
+
+        $w = $s->modInverse($order);
+        list(, $u1) = $z->multiply($w)->divide($order);
+        list(, $u2) = $r->multiply($w)->divide($order);
+
+        $u1 = $this->curve->convertInteger($u1);
+        $u2 = $this->curve->convertInteger($u2);
+
+        list($x1, $y1) = $this->curve->multiplyAddPoints(
+            [$this->curve->getBasePoint(), $this->QA],
+            [$u1, $u2]
+        );
+
+        $x1 = $x1->toBigInteger();
+        list(, $x1) = $x1->divide($order);
+
+        return $x1->equals($r);
+    }
+
+    /**
+     * Returns the public key
+     *
+     * @param string $type
+     * @param array $options optional
+     * @return string
+     */
+    public function toString($type, array $options = [])
+    {
+        $type = self::validatePlugin('Keys', $type, 'savePublicKey');
+
+        return $type::savePublicKey($this->curve, $this->QA, $options);
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/Hash.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/Hash.php
new file mode 100644
index 0000000..0e02544
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/Hash.php
@@ -0,0 +1,1455 @@
+<?php
+
+/**
+ * Wrapper around hash() and hash_hmac() functions supporting truncated hashes
+ * such as sha256-96.  Any hash algorithm returned by hash_algos() (and
+ * truncated versions thereof) are supported.
+ *
+ * If {@link self::setKey() setKey()} is called, {@link self::hash() hash()} will
+ * return the HMAC as opposed to the hash.
+ *
+ * Here's a short example of how to use this library:
+ * <code>
+ * <?php
+ *    include 'vendor/autoload.php';
+ *
+ *    $hash = new \phpseclib3\Crypt\Hash('sha512');
+ *
+ *    $hash->setKey('abcdefg');
+ *
+ *    echo base64_encode($hash->hash('abcdefg'));
+ * ?>
+ * </code>
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @author    Andreas Fischer <bantu@phpbb.com>
+ * @copyright 2015 Andreas Fischer
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt;
+
+use phpseclib3\Common\Functions\Strings;
+use phpseclib3\Exception\InsufficientSetupException;
+use phpseclib3\Exception\UnsupportedAlgorithmException;
+use phpseclib3\Math\BigInteger;
+use phpseclib3\Math\PrimeField;
+
+/**
+ * @author  Jim Wigginton <terrafrost@php.net>
+ * @author  Andreas Fischer <bantu@phpbb.com>
+ */
+class Hash
+{
+    /**
+     * Padding Types
+     *
+     */
+    const PADDING_KECCAK = 1;
+
+    /**
+     * Padding Types
+     *
+     */
+    const PADDING_SHA3 = 2;
+
+    /**
+     * Padding Types
+     *
+     */
+    const PADDING_SHAKE = 3;
+
+    /**
+     * Padding Type
+     *
+     * Only used by SHA3
+     *
+     * @var int
+     */
+    private $paddingType = 0;
+
+    /**
+     * Hash Parameter
+     *
+     * @see self::setHash()
+     * @var int
+     */
+    private $hashParam;
+
+    /**
+     * Byte-length of hash output (Internal HMAC)
+     *
+     * @see self::setHash()
+     * @var int
+     */
+    private $length;
+
+    /**
+     * Hash Algorithm
+     *
+     * @see self::setHash()
+     * @var string
+     */
+    private $algo;
+
+    /**
+     * Key
+     *
+     * @see self::setKey()
+     * @var string
+     */
+    private $key = false;
+
+    /**
+     * Nonce
+     *
+     * @see self::setNonce()
+     * @var string
+     */
+    private $nonce = false;
+
+    /**
+     * Hash Parameters
+     *
+     * @var array
+     */
+    private $parameters = [];
+
+    /**
+     * Computed Key
+     *
+     * @see self::_computeKey()
+     * @var string
+     */
+    private $computedKey = false;
+
+    /**
+     * Outer XOR (Internal HMAC)
+     *
+     * Used only for sha512/*
+     *
+     * @see self::hash()
+     * @var string
+     */
+    private $opad;
+
+    /**
+     * Inner XOR (Internal HMAC)
+     *
+     * Used only for sha512/*
+     *
+     * @see self::hash()
+     * @var string
+     */
+    private $ipad;
+
+    /**
+     * Recompute AES Key
+     *
+     * Used only for umac
+     *
+     * @see self::hash()
+     * @var boolean
+     */
+    private $recomputeAESKey;
+
+    /**
+     * umac cipher object
+     *
+     * @see self::hash()
+     * @var \phpseclib3\Crypt\AES
+     */
+    private $c;
+
+    /**
+     * umac pad
+     *
+     * @see self::hash()
+     * @var string
+     */
+    private $pad;
+
+    /**
+     * Block Size
+     *
+     * @var int
+     */
+    private $blockSize;
+
+    /**#@+
+     * UMAC variables
+     *
+     * @var PrimeField
+     */
+    private static $factory36;
+    private static $factory64;
+    private static $factory128;
+    private static $offset64;
+    private static $offset128;
+    private static $marker64;
+    private static $marker128;
+    private static $maxwordrange64;
+    private static $maxwordrange128;
+    /**#@-*/
+
+    /**
+     * Default Constructor.
+     *
+     * @param string $hash
+     */
+    public function __construct($hash = 'sha256')
+    {
+        $this->setHash($hash);
+    }
+
+    /**
+     * Sets the key for HMACs
+     *
+     * Keys can be of any length.
+     *
+     * @param string $key
+     */
+    public function setKey($key = false)
+    {
+        $this->key = $key;
+        $this->computeKey();
+        $this->recomputeAESKey = true;
+    }
+
+    /**
+     * Sets the nonce for UMACs
+     *
+     * Keys can be of any length.
+     *
+     * @param string $nonce
+     */
+    public function setNonce($nonce = false)
+    {
+        switch (true) {
+            case !is_string($nonce):
+            case strlen($nonce) > 0 && strlen($nonce) <= 16:
+                $this->recomputeAESKey = true;
+                $this->nonce = $nonce;
+                return;
+        }
+
+        throw new \LengthException('The nonce length must be between 1 and 16 bytes, inclusive');
+    }
+
+    /**
+     * Pre-compute the key used by the HMAC
+     *
+     * Quoting http://tools.ietf.org/html/rfc2104#section-2, "Applications that use keys longer than B bytes
+     * will first hash the key using H and then use the resultant L byte string as the actual key to HMAC."
+     *
+     * As documented in https://www.reddit.com/r/PHP/comments/9nct2l/symfonypolyfill_hash_pbkdf2_correct_fix_for/
+     * when doing an HMAC multiple times it's faster to compute the hash once instead of computing it during
+     * every call
+     *
+     */
+    private function computeKey()
+    {
+        if ($this->key === false) {
+            $this->computedKey = false;
+            return;
+        }
+
+        if (strlen($this->key) <= $this->getBlockLengthInBytes()) {
+            $this->computedKey = $this->key;
+            return;
+        }
+
+        $this->computedKey = is_array($this->algo) ?
+            call_user_func($this->algo, $this->key) :
+            hash($this->algo, $this->key, true);
+    }
+
+    /**
+     * Gets the hash function.
+     *
+     * As set by the constructor or by the setHash() method.
+     *
+     * @return string
+     */
+    public function getHash()
+    {
+        return $this->hashParam;
+    }
+
+    /**
+     * Sets the hash function.
+     *
+     * @param string $hash
+     */
+    public function setHash($hash)
+    {
+        $this->hashParam = $hash = strtolower($hash);
+        switch ($hash) {
+            case 'umac-32':
+            case 'umac-64':
+            case 'umac-96':
+            case 'umac-128':
+                $this->blockSize = 128;
+                $this->length = abs(substr($hash, -3)) >> 3;
+                $this->algo = 'umac';
+                return;
+            case 'md2-96':
+            case 'md5-96':
+            case 'sha1-96':
+            case 'sha224-96':
+            case 'sha256-96':
+            case 'sha384-96':
+            case 'sha512-96':
+            case 'sha512/224-96':
+            case 'sha512/256-96':
+                $hash = substr($hash, 0, -3);
+                $this->length = 12; // 96 / 8 = 12
+                break;
+            case 'md2':
+            case 'md5':
+                $this->length = 16;
+                break;
+            case 'sha1':
+                $this->length = 20;
+                break;
+            case 'sha224':
+            case 'sha512/224':
+            case 'sha3-224':
+                $this->length = 28;
+                break;
+            case 'keccak256':
+                $this->paddingType = self::PADDING_KECCAK;
+                // fall-through
+            case 'sha256':
+            case 'sha512/256':
+            case 'sha3-256':
+                $this->length = 32;
+                break;
+            case 'sha384':
+            case 'sha3-384':
+                $this->length = 48;
+                break;
+            case 'sha512':
+            case 'sha3-512':
+                $this->length = 64;
+                break;
+            default:
+                if (preg_match('#^(shake(?:128|256))-(\d+)$#', $hash, $matches)) {
+                    $this->paddingType = self::PADDING_SHAKE;
+                    $hash = $matches[1];
+                    $this->length = $matches[2] >> 3;
+                } else {
+                    throw new UnsupportedAlgorithmException(
+                        "$hash is not a supported algorithm"
+                    );
+                }
+        }
+
+        switch ($hash) {
+            case 'md2':
+            case 'md2-96':
+                $this->blockSize = 128;
+                break;
+            case 'md5-96':
+            case 'sha1-96':
+            case 'sha224-96':
+            case 'sha256-96':
+            case 'md5':
+            case 'sha1':
+            case 'sha224':
+            case 'sha256':
+                $this->blockSize = 512;
+                break;
+            case 'sha3-224':
+                $this->blockSize = 1152; // 1600 - 2*224
+                break;
+            case 'sha3-256':
+            case 'shake256':
+            case 'keccak256':
+                $this->blockSize = 1088; // 1600 - 2*256
+                break;
+            case 'sha3-384':
+                $this->blockSize = 832; // 1600 - 2*384
+                break;
+            case 'sha3-512':
+                $this->blockSize = 576; // 1600 - 2*512
+                break;
+            case 'shake128':
+                $this->blockSize = 1344; // 1600 - 2*128
+                break;
+            default:
+                $this->blockSize = 1024;
+        }
+
+        if (in_array(substr($hash, 0, 5), ['sha3-', 'shake', 'kecca'])) {
+            // PHP 7.1.0 introduced support for "SHA3 fixed mode algorithms":
+            // http://php.net/ChangeLog-7.php#7.1.0
+            if (version_compare(PHP_VERSION, '7.1.0') < 0 || substr($hash, 0, 5) != 'sha3-') {
+                //preg_match('#(\d+)$#', $hash, $matches);
+                //$this->parameters['capacity'] = 2 * $matches[1]; // 1600 - $this->blockSize
+                //$this->parameters['rate'] = 1600 - $this->parameters['capacity']; // == $this->blockSize
+                if (!$this->paddingType) {
+                    $this->paddingType = self::PADDING_SHA3;
+                }
+                $this->parameters = [
+                    'capacity' => 1600 - $this->blockSize,
+                    'rate' => $this->blockSize,
+                    'length' => $this->length,
+                    'padding' => $this->paddingType
+                ];
+                $hash = ['phpseclib3\Crypt\Hash', PHP_INT_SIZE == 8 ? 'sha3_64' : 'sha3_32'];
+            }
+        }
+
+        if ($hash == 'sha512/224' || $hash == 'sha512/256') {
+            // PHP 7.1.0 introduced sha512/224 and sha512/256 support:
+            // http://php.net/ChangeLog-7.php#7.1.0
+            if (version_compare(PHP_VERSION, '7.1.0') < 0) {
+                // from http://csrc.nist.gov/publications/fips/fips180-4/fips-180-4.pdf#page=24
+                $initial = $hash == 'sha512/256' ?
+                    [
+                        '22312194FC2BF72C', '9F555FA3C84C64C2', '2393B86B6F53B151', '963877195940EABD',
+                        '96283EE2A88EFFE3', 'BE5E1E2553863992', '2B0199FC2C85B8AA', '0EB72DDC81C52CA2'
+                    ] :
+                    [
+                        '8C3D37C819544DA2', '73E1996689DCD4D6', '1DFAB7AE32FF9C82', '679DD514582F9FCF',
+                        '0F6D2B697BD44DA8', '77E36F7304C48942', '3F9D85A86A1D36C8', '1112E6AD91D692A1'
+                    ];
+                for ($i = 0; $i < 8; $i++) {
+                    $initial[$i] = new BigInteger($initial[$i], 16);
+                    $initial[$i]->setPrecision(64);
+                }
+
+                $this->parameters = compact('initial');
+
+                $hash = ['phpseclib3\Crypt\Hash', 'sha512'];
+            }
+        }
+
+        if (is_array($hash)) {
+            $b = $this->blockSize >> 3;
+            $this->ipad = str_repeat(chr(0x36), $b);
+            $this->opad = str_repeat(chr(0x5C), $b);
+        }
+
+        $this->algo = $hash;
+
+        $this->computeKey();
+    }
+
+    /**
+     * KDF: Key-Derivation Function
+     *
+     * The key-derivation function generates pseudorandom bits used to key the hash functions.
+     *
+     * @param int $index a non-negative integer less than 2^64
+     * @param int $numbytes a non-negative integer less than 2^64
+     * @return string string of length numbytes bytes
+     */
+    private function kdf($index, $numbytes)
+    {
+        $this->c->setIV(pack('N4', 0, $index, 0, 1));
+
+        return $this->c->encrypt(str_repeat("\0", $numbytes));
+    }
+
+    /**
+     * PDF Algorithm
+     *
+     * @return string string of length taglen bytes.
+     */
+    private function pdf()
+    {
+        $k = $this->key;
+        $nonce = $this->nonce;
+        $taglen = $this->length;
+
+        //
+        // Extract and zero low bit(s) of Nonce if needed
+        //
+        if ($taglen <= 8) {
+            $last = strlen($nonce) - 1;
+            $mask = $taglen == 4 ? "\3" : "\1";
+            $index = $nonce[$last] & $mask;
+            $nonce[$last] = $nonce[$last] ^ $index;
+        }
+
+        //
+        // Make Nonce BLOCKLEN bytes by appending zeroes if needed
+        //
+        $nonce = str_pad($nonce, 16, "\0");
+
+        //
+        // Generate subkey, encipher and extract indexed substring
+        //
+        $kp = $this->kdf(0, 16);
+        $c = new AES('ctr');
+        $c->disablePadding();
+        $c->setKey($kp);
+        $c->setIV($nonce);
+        $t = $c->encrypt("\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0");
+
+        // we could use ord() but per https://paragonie.com/blog/2016/06/constant-time-encoding-boring-cryptography-rfc-4648-and-you
+        // unpack() doesn't leak timing info
+        return $taglen <= 8 ?
+            substr($t, unpack('C', $index)[1] * $taglen, $taglen) :
+            substr($t, 0, $taglen);
+    }
+
+    /**
+     * UHASH Algorithm
+     *
+     * @param string $m string of length less than 2^67 bits.
+     * @param int $taglen the integer 4, 8, 12 or 16.
+     * @return string string of length taglen bytes.
+     */
+    private function uhash($m, $taglen)
+    {
+        //
+        // One internal iteration per 4 bytes of output
+        //
+        $iters = $taglen >> 2;
+
+        //
+        // Define total key needed for all iterations using KDF.
+        // L1Key reuses most key material between iterations.
+        //
+        //$L1Key  = $this->kdf(1, 1024 + ($iters - 1) * 16);
+        $L1Key  = $this->kdf(1, (1024 + ($iters - 1)) * 16);
+        $L2Key  = $this->kdf(2, $iters * 24);
+        $L3Key1 = $this->kdf(3, $iters * 64);
+        $L3Key2 = $this->kdf(4, $iters * 4);
+
+        //
+        // For each iteration, extract key and do three-layer hash.
+        // If bytelength(M) <= 1024, then skip L2-HASH.
+        //
+        $y = '';
+        for ($i = 0; $i < $iters; $i++) {
+            $L1Key_i  = substr($L1Key, $i * 16, 1024);
+            $L2Key_i  = substr($L2Key, $i * 24, 24);
+            $L3Key1_i = substr($L3Key1, $i * 64, 64);
+            $L3Key2_i = substr($L3Key2, $i * 4, 4);
+
+            $a = self::L1Hash($L1Key_i, $m);
+            $b = strlen($m) <= 1024 ? "\0\0\0\0\0\0\0\0$a" : self::L2Hash($L2Key_i, $a);
+            $c = self::L3Hash($L3Key1_i, $L3Key2_i, $b);
+            $y .= $c;
+        }
+
+        return $y;
+    }
+
+    /**
+     * L1-HASH Algorithm
+     *
+     * The first-layer hash breaks the message into 1024-byte chunks and
+     * hashes each with a function called NH.  Concatenating the results
+     * forms a string, which is up to 128 times shorter than the original.
+     *
+     * @param string $k string of length 1024 bytes.
+     * @param string $m string of length less than 2^67 bits.
+     * @return string string of length (8 * ceil(bitlength(M)/8192)) bytes.
+     */
+    private static function L1Hash($k, $m)
+    {
+        //
+        // Break M into 1024 byte chunks (final chunk may be shorter)
+        //
+        $m = str_split($m, 1024);
+
+        //
+        // For each chunk, except the last: endian-adjust, NH hash
+        // and add bit-length.  Use results to build Y.
+        //
+        $length = new BigInteger(1024 * 8);
+        $y = '';
+        for ($i = 0; $i < count($m) - 1; $i++) {
+            $m[$i] = pack('N*', ...unpack('V*', $m[$i])); // ENDIAN-SWAP
+            $y .= static::nh($k, $m[$i], $length);
+        }
+
+        //
+        // For the last chunk: pad to 32-byte boundary, endian-adjust,
+        // NH hash and add bit-length.  Concatenate the result to Y.
+        //
+        $length = count($m) ? strlen($m[$i]) : 0;
+        $pad = 32 - ($length % 32);
+        $pad = max(32, $length + $pad % 32);
+        $m[$i] = str_pad(isset($m[$i]) ? $m[$i] : '', $pad, "\0"); // zeropad
+        $m[$i] = pack('N*', ...unpack('V*', $m[$i])); // ENDIAN-SWAP
+
+        $y .= static::nh($k, $m[$i], new BigInteger($length * 8));
+
+        return $y;
+    }
+
+    /**
+     * NH Algorithm
+     *
+     * @param string $k string of length 1024 bytes.
+     * @param string $m string with length divisible by 32 bytes.
+     * @return string string of length 8 bytes.
+     */
+    private static function nh($k, $m, $length)
+    {
+        $toUInt32 = function ($x) {
+            $x = new BigInteger($x, 256);
+            $x->setPrecision(32);
+            return $x;
+        };
+
+        //
+        // Break M and K into 4-byte chunks
+        //
+        //$t = strlen($m) >> 2;
+        $m = str_split($m, 4);
+        $t = count($m);
+        $k = str_split($k, 4);
+        $k = array_pad(array_slice($k, 0, $t), $t, 0);
+
+        $m = array_map($toUInt32, $m);
+        $k = array_map($toUInt32, $k);
+
+        //
+        // Perform NH hash on the chunks, pairing words for multiplication
+        // which are 4 apart to accommodate vector-parallelism.
+        //
+        $y = new BigInteger();
+        $y->setPrecision(64);
+        $i = 0;
+        while ($i < $t) {
+            $temp = $m[$i]->add($k[$i]);
+            $temp->setPrecision(64);
+            $temp = $temp->multiply($m[$i + 4]->add($k[$i + 4]));
+            $y = $y->add($temp);
+
+            $temp = $m[$i + 1]->add($k[$i + 1]);
+            $temp->setPrecision(64);
+            $temp = $temp->multiply($m[$i + 5]->add($k[$i + 5]));
+            $y = $y->add($temp);
+
+            $temp = $m[$i + 2]->add($k[$i + 2]);
+            $temp->setPrecision(64);
+            $temp = $temp->multiply($m[$i + 6]->add($k[$i + 6]));
+            $y = $y->add($temp);
+
+            $temp = $m[$i + 3]->add($k[$i + 3]);
+            $temp->setPrecision(64);
+            $temp = $temp->multiply($m[$i + 7]->add($k[$i + 7]));
+            $y = $y->add($temp);
+
+            $i += 8;
+        }
+
+        return $y->add($length)->toBytes();
+    }
+
+    /**
+     * L2-HASH: Second-Layer Hash
+     *
+     * The second-layer rehashes the L1-HASH output using a polynomial hash
+     * called POLY.  If the L1-HASH output is long, then POLY is called once
+     * on a prefix of the L1-HASH output and called using different settings
+     * on the remainder.  (This two-step hashing of the L1-HASH output is
+     * needed only if the message length is greater than 16 megabytes.)
+     * Careful implementation of POLY is necessary to avoid a possible
+     * timing attack (see Section 6.6 for more information).
+     *
+     * @param string $k string of length 24 bytes.
+     * @param string $m string of length less than 2^64 bytes.
+     * @return string string of length 16 bytes.
+     */
+    private static function L2Hash($k, $m)
+    {
+        //
+        //  Extract keys and restrict to special key-sets
+        //
+        $k64 = $k & "\x01\xFF\xFF\xFF\x01\xFF\xFF\xFF";
+        $k64 = new BigInteger($k64, 256);
+        $k128 = substr($k, 8) & "\x01\xFF\xFF\xFF\x01\xFF\xFF\xFF\x01\xFF\xFF\xFF\x01\xFF\xFF\xFF";
+        $k128 = new BigInteger($k128, 256);
+
+        //
+        // If M is no more than 2^17 bytes, hash under 64-bit prime,
+        // otherwise, hash first 2^17 bytes under 64-bit prime and
+        // remainder under 128-bit prime.
+        //
+        if (strlen($m) <= 0x20000) { // 2^14 64-bit words
+            $y = self::poly(64, self::$maxwordrange64, $k64, $m);
+        } else {
+            $m_1 = substr($m, 0, 0x20000); // 1 << 17
+            $m_2 = substr($m, 0x20000) . "\x80";
+            $length = strlen($m_2);
+            $pad = 16 - ($length % 16);
+            $pad %= 16;
+            $m_2 = str_pad($m_2, $length + $pad, "\0"); // zeropad
+            $y = self::poly(64, self::$maxwordrange64, $k64, $m_1);
+            $y = str_pad($y, 16, "\0", STR_PAD_LEFT);
+            $y = self::poly(128, self::$maxwordrange128, $k128, $y . $m_2);
+        }
+
+        return str_pad($y, 16, "\0", STR_PAD_LEFT);
+    }
+
+    /**
+     * POLY Algorithm
+     *
+     * @param int $wordbits the integer 64 or 128.
+     * @param BigInteger $maxwordrange positive integer less than 2^wordbits.
+     * @param BigInteger $k integer in the range 0 ... prime(wordbits) - 1.
+     * @param string $m string with length divisible by (wordbits / 8) bytes.
+     * @return integer in the range 0 ... prime(wordbits) - 1.
+     */
+    private static function poly($wordbits, $maxwordrange, $k, $m)
+    {
+        //
+        // Define constants used for fixing out-of-range words
+        //
+        $wordbytes = $wordbits >> 3;
+        if ($wordbits == 128) {
+            $factory = self::$factory128;
+            $offset = self::$offset128;
+            $marker = self::$marker128;
+        } else {
+            $factory = self::$factory64;
+            $offset = self::$offset64;
+            $marker = self::$marker64;
+        }
+
+        $k = $factory->newInteger($k);
+
+        //
+        // Break M into chunks of length wordbytes bytes
+        //
+        $m_i = str_split($m, $wordbytes);
+
+        //
+        // Each input word m is compared with maxwordrange.  If not smaller
+        // then 'marker' and (m - offset), both in range, are hashed.
+        //
+        $y = $factory->newInteger(new BigInteger(1));
+        foreach ($m_i as $m) {
+            $m = $factory->newInteger(new BigInteger($m, 256));
+            if ($m->compare($maxwordrange) >= 0) {
+                $y = $k->multiply($y)->add($marker);
+                $y = $k->multiply($y)->add($m->subtract($offset));
+            } else {
+                $y = $k->multiply($y)->add($m);
+            }
+        }
+
+        return $y->toBytes();
+    }
+
+    /**
+     * L3-HASH: Third-Layer Hash
+     *
+     * The output from L2-HASH is 16 bytes long.  This final hash function
+     * hashes the 16-byte string to a fixed length of 4 bytes.
+     *
+     * @param string $k1 string of length 64 bytes.
+     * @param string $k2 string of length 4 bytes.
+     * @param string $m string of length 16 bytes.
+     * @return string string of length 4 bytes.
+     */
+    private static function L3Hash($k1, $k2, $m)
+    {
+        $factory = self::$factory36;
+
+        $y = $factory->newInteger(new BigInteger());
+        for ($i = 0; $i < 8; $i++) {
+            $m_i = $factory->newInteger(new BigInteger(substr($m, 2 * $i, 2), 256));
+            $k_i = $factory->newInteger(new BigInteger(substr($k1, 8 * $i, 8), 256));
+            $y = $y->add($m_i->multiply($k_i));
+        }
+        $y = str_pad(substr($y->toBytes(), -4), 4, "\0", STR_PAD_LEFT);
+        $y = $y ^ $k2;
+
+        return $y;
+    }
+
+    /**
+     * Compute the Hash / HMAC / UMAC.
+     *
+     * @param string $text
+     * @return string
+     */
+    public function hash($text)
+    {
+        $algo = $this->algo;
+        if ($algo == 'umac') {
+            if ($this->recomputeAESKey) {
+                if (!is_string($this->nonce)) {
+                    throw new InsufficientSetupException('No nonce has been set');
+                }
+                if (!is_string($this->key)) {
+                    throw new InsufficientSetupException('No key has been set');
+                }
+                if (strlen($this->key) != 16) {
+                    throw new \LengthException('Key must be 16 bytes long');
+                }
+
+                if (!isset(self::$maxwordrange64)) {
+                    $one = new BigInteger(1);
+
+                    $prime36 = new BigInteger("\x00\x00\x00\x0F\xFF\xFF\xFF\xFB", 256);
+                    self::$factory36 = new PrimeField($prime36);
+
+                    $prime64 = new BigInteger("\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xC5", 256);
+                    self::$factory64 = new PrimeField($prime64);
+
+                    $prime128 = new BigInteger("\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\x61", 256);
+                    self::$factory128 = new PrimeField($prime128);
+
+                    self::$offset64 = new BigInteger("\1\0\0\0\0\0\0\0\0", 256);
+                    self::$offset64 = self::$factory64->newInteger(self::$offset64->subtract($prime64));
+                    self::$offset128 = new BigInteger("\1\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", 256);
+                    self::$offset128 = self::$factory128->newInteger(self::$offset128->subtract($prime128));
+
+                    self::$marker64 = self::$factory64->newInteger($prime64->subtract($one));
+                    self::$marker128 = self::$factory128->newInteger($prime128->subtract($one));
+
+                    $maxwordrange64 = $one->bitwise_leftShift(64)->subtract($one->bitwise_leftShift(32));
+                    self::$maxwordrange64 = self::$factory64->newInteger($maxwordrange64);
+
+                    $maxwordrange128 = $one->bitwise_leftShift(128)->subtract($one->bitwise_leftShift(96));
+                    self::$maxwordrange128 = self::$factory128->newInteger($maxwordrange128);
+                }
+
+                $this->c = new AES('ctr');
+                $this->c->disablePadding();
+                $this->c->setKey($this->key);
+
+                $this->pad = $this->pdf();
+
+                $this->recomputeAESKey = false;
+            }
+
+            $hashedmessage = $this->uhash($text, $this->length);
+            return $hashedmessage ^ $this->pad;
+        }
+
+        if (is_array($algo)) {
+            if (empty($this->key) || !is_string($this->key)) {
+                return substr($algo($text, ...array_values($this->parameters)), 0, $this->length);
+            }
+
+            // SHA3 HMACs are discussed at https://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.202.pdf#page=30
+
+            $key    = str_pad($this->computedKey, $b, chr(0));
+            $temp   = $this->ipad ^ $key;
+            $temp  .= $text;
+            $temp   = substr($algo($temp, ...array_values($this->parameters)), 0, $this->length);
+            $output = $this->opad ^ $key;
+            $output .= $temp;
+            $output = $algo($output, ...array_values($this->parameters));
+
+            return substr($output, 0, $this->length);
+        }
+
+        $output = !empty($this->key) || is_string($this->key) ?
+            hash_hmac($algo, $text, $this->computedKey, true) :
+            hash($algo, $text, true);
+
+        return strlen($output) > $this->length
+            ? substr($output, 0, $this->length)
+            : $output;
+    }
+
+    /**
+     * Returns the hash length (in bits)
+     *
+     * @return int
+     */
+    public function getLength()
+    {
+        return $this->length << 3;
+    }
+
+    /**
+     * Returns the hash length (in bytes)
+     *
+     * @return int
+     */
+    public function getLengthInBytes()
+    {
+        return $this->length;
+    }
+
+    /**
+     * Returns the block length (in bits)
+     *
+     * @return int
+     */
+    public function getBlockLength()
+    {
+        return $this->blockSize;
+    }
+
+    /**
+     * Returns the block length (in bytes)
+     *
+     * @return int
+     */
+    public function getBlockLengthInBytes()
+    {
+        return $this->blockSize >> 3;
+    }
+
+    /**
+     * Pads SHA3 based on the mode
+     *
+     * @param int $padLength
+     * @param int $padType
+     * @return string
+     */
+    private static function sha3_pad($padLength, $padType)
+    {
+        switch ($padType) {
+            case self::PADDING_KECCAK:
+                $temp = chr(0x01) . str_repeat("\0", $padLength - 1);
+                $temp[$padLength - 1] = $temp[$padLength - 1] | chr(0x80);
+                return $temp;
+            case self::PADDING_SHAKE:
+                $temp = chr(0x1F) . str_repeat("\0", $padLength - 1);
+                $temp[$padLength - 1] = $temp[$padLength - 1] | chr(0x80);
+                return $temp;
+            //case self::PADDING_SHA3:
+            default:
+                // from https://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.202.pdf#page=36
+                return $padLength == 1 ? chr(0x86) : chr(0x06) . str_repeat("\0", $padLength - 2) . chr(0x80);
+        }
+    }
+
+    /**
+     * Pure-PHP 32-bit implementation of SHA3
+     *
+     * Whereas BigInteger.php's 32-bit engine works on PHP 64-bit this 32-bit implementation
+     * of SHA3 will *not* work on PHP 64-bit. This is because this implementation
+     * employees bitwise NOTs and bitwise left shifts. And the round constants only work
+     * on 32-bit PHP. eg. dechex(-2147483648) returns 80000000 on 32-bit PHP and
+     * FFFFFFFF80000000 on 64-bit PHP. Sure, we could do bitwise ANDs but that would slow
+     * things down.
+     *
+     * SHA512 requires BigInteger to simulate 64-bit unsigned integers because SHA2 employees
+     * addition whereas SHA3 just employees bitwise operators. PHP64 only supports signed
+     * 64-bit integers, which complicates addition, whereas that limitation isn't an issue
+     * for SHA3.
+     *
+     * In https://ws680.nist.gov/publication/get_pdf.cfm?pub_id=919061#page=16 KECCAK[C] is
+     * defined as "the KECCAK instance with KECCAK-f[1600] as the underlying permutation and
+     * capacity c". This is relevant because, altho the KECCAK standard defines a mode
+     * (KECCAK-f[800]) designed for 32-bit machines that mode is incompatible with SHA3
+     *
+     * @param string $p
+     * @param int $c
+     * @param int $r
+     * @param int $d
+     * @param int $padType
+     */
+    private static function sha3_32($p, $c, $r, $d, $padType)
+    {
+        $block_size = $r >> 3;
+        $padLength = $block_size - (strlen($p) % $block_size);
+        $num_ints = $block_size >> 2;
+
+        $p .= static::sha3_pad($padLength, $padType);
+
+        $n = strlen($p) / $r; // number of blocks
+
+        $s = [
+            [[0, 0], [0, 0], [0, 0], [0, 0], [0, 0]],
+            [[0, 0], [0, 0], [0, 0], [0, 0], [0, 0]],
+            [[0, 0], [0, 0], [0, 0], [0, 0], [0, 0]],
+            [[0, 0], [0, 0], [0, 0], [0, 0], [0, 0]],
+            [[0, 0], [0, 0], [0, 0], [0, 0], [0, 0]]
+        ];
+
+        $p = str_split($p, $block_size);
+
+        foreach ($p as $pi) {
+            $pi = unpack('V*', $pi);
+            $x = $y = 0;
+            for ($i = 1; $i <= $num_ints; $i += 2) {
+                $s[$x][$y][0] ^= $pi[$i + 1];
+                $s[$x][$y][1] ^= $pi[$i];
+                if (++$y == 5) {
+                    $y = 0;
+                    $x++;
+                }
+            }
+            static::processSHA3Block32($s);
+        }
+
+        $z = '';
+        $i = $j = 0;
+        while (strlen($z) < $d) {
+            $z .= pack('V2', $s[$i][$j][1], $s[$i][$j++][0]);
+            if ($j == 5) {
+                $j = 0;
+                $i++;
+                if ($i == 5) {
+                    $i = 0;
+                    static::processSHA3Block32($s);
+                }
+            }
+        }
+
+        return $z;
+    }
+
+    /**
+     * 32-bit block processing method for SHA3
+     *
+     * @param array $s
+     */
+    private static function processSHA3Block32(&$s)
+    {
+        static $rotationOffsets = [
+            [ 0,  1, 62, 28, 27],
+            [36, 44,  6, 55, 20],
+            [ 3, 10, 43, 25, 39],
+            [41, 45, 15, 21,  8],
+            [18,  2, 61, 56, 14]
+        ];
+
+        // the standards give these constants in hexadecimal notation. it's tempting to want to use
+        // that same notation, here, however, we can't, because 0x80000000, on PHP32, is a positive
+        // float - not the negative int that we need to be in PHP32. so we use -2147483648 instead
+        static $roundConstants = [
+            [0, 1],
+            [0, 32898],
+            [-2147483648, 32906],
+            [-2147483648, -2147450880],
+            [0, 32907],
+            [0, -2147483647],
+            [-2147483648, -2147450751],
+            [-2147483648, 32777],
+            [0, 138],
+            [0, 136],
+            [0, -2147450871],
+            [0, -2147483638],
+            [0, -2147450741],
+            [-2147483648, 139],
+            [-2147483648, 32905],
+            [-2147483648, 32771],
+            [-2147483648, 32770],
+            [-2147483648, 128],
+            [0, 32778],
+            [-2147483648, -2147483638],
+            [-2147483648, -2147450751],
+            [-2147483648, 32896],
+            [0, -2147483647],
+            [-2147483648, -2147450872]
+        ];
+
+        for ($round = 0; $round < 24; $round++) {
+            // theta step
+            $parity = $rotated = [];
+            for ($i = 0; $i < 5; $i++) {
+                $parity[] = [
+                    $s[0][$i][0] ^ $s[1][$i][0] ^ $s[2][$i][0] ^ $s[3][$i][0] ^ $s[4][$i][0],
+                    $s[0][$i][1] ^ $s[1][$i][1] ^ $s[2][$i][1] ^ $s[3][$i][1] ^ $s[4][$i][1]
+                ];
+                $rotated[] = static::rotateLeft32($parity[$i], 1);
+            }
+
+            $temp = [
+                [$parity[4][0] ^ $rotated[1][0], $parity[4][1] ^ $rotated[1][1]],
+                [$parity[0][0] ^ $rotated[2][0], $parity[0][1] ^ $rotated[2][1]],
+                [$parity[1][0] ^ $rotated[3][0], $parity[1][1] ^ $rotated[3][1]],
+                [$parity[2][0] ^ $rotated[4][0], $parity[2][1] ^ $rotated[4][1]],
+                [$parity[3][0] ^ $rotated[0][0], $parity[3][1] ^ $rotated[0][1]]
+            ];
+            for ($i = 0; $i < 5; $i++) {
+                for ($j = 0; $j < 5; $j++) {
+                    $s[$i][$j][0] ^= $temp[$j][0];
+                    $s[$i][$j][1] ^= $temp[$j][1];
+                }
+            }
+
+            $st = $s;
+
+            // rho and pi steps
+            for ($i = 0; $i < 5; $i++) {
+                for ($j = 0; $j < 5; $j++) {
+                    $st[(2 * $i + 3 * $j) % 5][$j] = static::rotateLeft32($s[$j][$i], $rotationOffsets[$j][$i]);
+                }
+            }
+
+            // chi step
+            for ($i = 0; $i < 5; $i++) {
+                $s[$i][0] = [
+                    $st[$i][0][0] ^ (~$st[$i][1][0] & $st[$i][2][0]),
+                    $st[$i][0][1] ^ (~$st[$i][1][1] & $st[$i][2][1])
+                ];
+                $s[$i][1] = [
+                    $st[$i][1][0] ^ (~$st[$i][2][0] & $st[$i][3][0]),
+                    $st[$i][1][1] ^ (~$st[$i][2][1] & $st[$i][3][1])
+                ];
+                $s[$i][2] = [
+                    $st[$i][2][0] ^ (~$st[$i][3][0] & $st[$i][4][0]),
+                    $st[$i][2][1] ^ (~$st[$i][3][1] & $st[$i][4][1])
+                ];
+                $s[$i][3] = [
+                    $st[$i][3][0] ^ (~$st[$i][4][0] & $st[$i][0][0]),
+                    $st[$i][3][1] ^ (~$st[$i][4][1] & $st[$i][0][1])
+                ];
+                $s[$i][4] = [
+                    $st[$i][4][0] ^ (~$st[$i][0][0] & $st[$i][1][0]),
+                    $st[$i][4][1] ^ (~$st[$i][0][1] & $st[$i][1][1])
+                ];
+            }
+
+            // iota step
+            $s[0][0][0] ^= $roundConstants[$round][0];
+            $s[0][0][1] ^= $roundConstants[$round][1];
+        }
+    }
+
+    /**
+     * Rotate 32-bit int
+     *
+     * @param array $x
+     * @param int $shift
+     */
+    private static function rotateLeft32($x, $shift)
+    {
+        if ($shift < 32) {
+            list($hi, $lo) = $x;
+        } else {
+            $shift -= 32;
+            list($lo, $hi) = $x;
+        }
+
+        return [
+            ($hi << $shift) | (($lo >> (32 - $shift)) & (1 << $shift) - 1),
+            ($lo << $shift) | (($hi >> (32 - $shift)) & (1 << $shift) - 1)
+        ];
+    }
+
+    /**
+     * Pure-PHP 64-bit implementation of SHA3
+     *
+     * @param string $p
+     * @param int $c
+     * @param int $r
+     * @param int $d
+     * @param int $padType
+     */
+    private static function sha3_64($p, $c, $r, $d, $padType)
+    {
+        $block_size = $r >> 3;
+        $padLength = $block_size - (strlen($p) % $block_size);
+        $num_ints = $block_size >> 2;
+
+        $p .= static::sha3_pad($padLength, $padType);
+
+        $n = strlen($p) / $r; // number of blocks
+
+        $s = [
+            [0, 0, 0, 0, 0],
+            [0, 0, 0, 0, 0],
+            [0, 0, 0, 0, 0],
+            [0, 0, 0, 0, 0],
+            [0, 0, 0, 0, 0]
+        ];
+
+        $p = str_split($p, $block_size);
+
+        foreach ($p as $pi) {
+            $pi = unpack('P*', $pi);
+            $x = $y = 0;
+            foreach ($pi as $subpi) {
+                $s[$x][$y++] ^= $subpi;
+                if ($y == 5) {
+                    $y = 0;
+                    $x++;
+                }
+            }
+            static::processSHA3Block64($s);
+        }
+
+        $z = '';
+        $i = $j = 0;
+        while (strlen($z) < $d) {
+            $z .= pack('P', $s[$i][$j++]);
+            if ($j == 5) {
+                $j = 0;
+                $i++;
+                if ($i == 5) {
+                    $i = 0;
+                    static::processSHA3Block64($s);
+                }
+            }
+        }
+
+        return $z;
+    }
+
+    /**
+     * 64-bit block processing method for SHA3
+     *
+     * @param array $s
+     */
+    private static function processSHA3Block64(&$s)
+    {
+        static $rotationOffsets = [
+            [ 0,  1, 62, 28, 27],
+            [36, 44,  6, 55, 20],
+            [ 3, 10, 43, 25, 39],
+            [41, 45, 15, 21,  8],
+            [18,  2, 61, 56, 14]
+        ];
+
+        static $roundConstants = [
+            1,
+            32898,
+            -9223372036854742902,
+            -9223372034707259392,
+            32907,
+            2147483649,
+            -9223372034707259263,
+            -9223372036854743031,
+            138,
+            136,
+            2147516425,
+            2147483658,
+            2147516555,
+            -9223372036854775669,
+            -9223372036854742903,
+            -9223372036854743037,
+            -9223372036854743038,
+            -9223372036854775680,
+            32778,
+            -9223372034707292150,
+            -9223372034707259263,
+            -9223372036854742912,
+            2147483649,
+            -9223372034707259384
+        ];
+
+        for ($round = 0; $round < 24; $round++) {
+            // theta step
+            $parity = [];
+            for ($i = 0; $i < 5; $i++) {
+                $parity[] = $s[0][$i] ^ $s[1][$i] ^ $s[2][$i] ^ $s[3][$i] ^ $s[4][$i];
+            }
+            $temp = [
+                $parity[4] ^ static::rotateLeft64($parity[1], 1),
+                $parity[0] ^ static::rotateLeft64($parity[2], 1),
+                $parity[1] ^ static::rotateLeft64($parity[3], 1),
+                $parity[2] ^ static::rotateLeft64($parity[4], 1),
+                $parity[3] ^ static::rotateLeft64($parity[0], 1)
+            ];
+            for ($i = 0; $i < 5; $i++) {
+                for ($j = 0; $j < 5; $j++) {
+                    $s[$i][$j] ^= $temp[$j];
+                }
+            }
+
+            $st = $s;
+
+            // rho and pi steps
+            for ($i = 0; $i < 5; $i++) {
+                for ($j = 0; $j < 5; $j++) {
+                    $st[(2 * $i + 3 * $j) % 5][$j] = static::rotateLeft64($s[$j][$i], $rotationOffsets[$j][$i]);
+                }
+            }
+
+            // chi step
+            for ($i = 0; $i < 5; $i++) {
+                $s[$i] = [
+                    $st[$i][0] ^ (~$st[$i][1] & $st[$i][2]),
+                    $st[$i][1] ^ (~$st[$i][2] & $st[$i][3]),
+                    $st[$i][2] ^ (~$st[$i][3] & $st[$i][4]),
+                    $st[$i][3] ^ (~$st[$i][4] & $st[$i][0]),
+                    $st[$i][4] ^ (~$st[$i][0] & $st[$i][1])
+                ];
+            }
+
+            // iota step
+            $s[0][0] ^= $roundConstants[$round];
+        }
+    }
+
+    /**
+     * Rotate 64-bit int
+     *
+     * @param int $x
+     * @param int $shift
+     */
+    private static function rotateLeft64($x, $shift)
+    {
+        return ($x << $shift) | (($x >> (64 - $shift)) & ((1 << $shift) - 1));
+    }
+
+    /**
+     * Pure-PHP implementation of SHA512
+     *
+     * @param string $m
+     * @param array $hash
+     * @return string
+     */
+    private static function sha512($m, $hash)
+    {
+        static $k;
+
+        if (!isset($k)) {
+            // Initialize table of round constants
+            // (first 64 bits of the fractional parts of the cube roots of the first 80 primes 2..409)
+            $k = [
+                '428a2f98d728ae22', '7137449123ef65cd', 'b5c0fbcfec4d3b2f', 'e9b5dba58189dbbc',
+                '3956c25bf348b538', '59f111f1b605d019', '923f82a4af194f9b', 'ab1c5ed5da6d8118',
+                'd807aa98a3030242', '12835b0145706fbe', '243185be4ee4b28c', '550c7dc3d5ffb4e2',
+                '72be5d74f27b896f', '80deb1fe3b1696b1', '9bdc06a725c71235', 'c19bf174cf692694',
+                'e49b69c19ef14ad2', 'efbe4786384f25e3', '0fc19dc68b8cd5b5', '240ca1cc77ac9c65',
+                '2de92c6f592b0275', '4a7484aa6ea6e483', '5cb0a9dcbd41fbd4', '76f988da831153b5',
+                '983e5152ee66dfab', 'a831c66d2db43210', 'b00327c898fb213f', 'bf597fc7beef0ee4',
+                'c6e00bf33da88fc2', 'd5a79147930aa725', '06ca6351e003826f', '142929670a0e6e70',
+                '27b70a8546d22ffc', '2e1b21385c26c926', '4d2c6dfc5ac42aed', '53380d139d95b3df',
+                '650a73548baf63de', '766a0abb3c77b2a8', '81c2c92e47edaee6', '92722c851482353b',
+                'a2bfe8a14cf10364', 'a81a664bbc423001', 'c24b8b70d0f89791', 'c76c51a30654be30',
+                'd192e819d6ef5218', 'd69906245565a910', 'f40e35855771202a', '106aa07032bbd1b8',
+                '19a4c116b8d2d0c8', '1e376c085141ab53', '2748774cdf8eeb99', '34b0bcb5e19b48a8',
+                '391c0cb3c5c95a63', '4ed8aa4ae3418acb', '5b9cca4f7763e373', '682e6ff3d6b2b8a3',
+                '748f82ee5defb2fc', '78a5636f43172f60', '84c87814a1f0ab72', '8cc702081a6439ec',
+                '90befffa23631e28', 'a4506cebde82bde9', 'bef9a3f7b2c67915', 'c67178f2e372532b',
+                'ca273eceea26619c', 'd186b8c721c0c207', 'eada7dd6cde0eb1e', 'f57d4f7fee6ed178',
+                '06f067aa72176fba', '0a637dc5a2c898a6', '113f9804bef90dae', '1b710b35131c471b',
+                '28db77f523047d84', '32caab7b40c72493', '3c9ebe0a15c9bebc', '431d67c49c100d4c',
+                '4cc5d4becb3e42b6', '597f299cfc657e2a', '5fcb6fab3ad6faec', '6c44198c4a475817'
+            ];
+
+            for ($i = 0; $i < 80; $i++) {
+                $k[$i] = new BigInteger($k[$i], 16);
+            }
+        }
+
+        // Pre-processing
+        $length = strlen($m);
+        // to round to nearest 112 mod 128, we'll add 128 - (length + (128 - 112)) % 128
+        $m .= str_repeat(chr(0), 128 - (($length + 16) & 0x7F));
+        $m[$length] = chr(0x80);
+        // we don't support hashing strings 512MB long
+        $m .= pack('N4', 0, 0, 0, $length << 3);
+
+        // Process the message in successive 1024-bit chunks
+        $chunks = str_split($m, 128);
+        foreach ($chunks as $chunk) {
+            $w = [];
+            for ($i = 0; $i < 16; $i++) {
+                $temp = new BigInteger(Strings::shift($chunk, 8), 256);
+                $temp->setPrecision(64);
+                $w[] = $temp;
+            }
+
+            // Extend the sixteen 32-bit words into eighty 32-bit words
+            for ($i = 16; $i < 80; $i++) {
+                $temp = [
+                          $w[$i - 15]->bitwise_rightRotate(1),
+                          $w[$i - 15]->bitwise_rightRotate(8),
+                          $w[$i - 15]->bitwise_rightShift(7)
+                ];
+                $s0 = $temp[0]->bitwise_xor($temp[1]);
+                $s0 = $s0->bitwise_xor($temp[2]);
+                $temp = [
+                          $w[$i - 2]->bitwise_rightRotate(19),
+                          $w[$i - 2]->bitwise_rightRotate(61),
+                          $w[$i - 2]->bitwise_rightShift(6)
+                ];
+                $s1 = $temp[0]->bitwise_xor($temp[1]);
+                $s1 = $s1->bitwise_xor($temp[2]);
+                $w[$i] = clone $w[$i - 16];
+                $w[$i] = $w[$i]->add($s0);
+                $w[$i] = $w[$i]->add($w[$i - 7]);
+                $w[$i] = $w[$i]->add($s1);
+            }
+
+            // Initialize hash value for this chunk
+            $a = clone $hash[0];
+            $b = clone $hash[1];
+            $c = clone $hash[2];
+            $d = clone $hash[3];
+            $e = clone $hash[4];
+            $f = clone $hash[5];
+            $g = clone $hash[6];
+            $h = clone $hash[7];
+
+            // Main loop
+            for ($i = 0; $i < 80; $i++) {
+                $temp = [
+                    $a->bitwise_rightRotate(28),
+                    $a->bitwise_rightRotate(34),
+                    $a->bitwise_rightRotate(39)
+                ];
+                $s0 = $temp[0]->bitwise_xor($temp[1]);
+                $s0 = $s0->bitwise_xor($temp[2]);
+                $temp = [
+                    $a->bitwise_and($b),
+                    $a->bitwise_and($c),
+                    $b->bitwise_and($c)
+                ];
+                $maj = $temp[0]->bitwise_xor($temp[1]);
+                $maj = $maj->bitwise_xor($temp[2]);
+                $t2 = $s0->add($maj);
+
+                $temp = [
+                    $e->bitwise_rightRotate(14),
+                    $e->bitwise_rightRotate(18),
+                    $e->bitwise_rightRotate(41)
+                ];
+                $s1 = $temp[0]->bitwise_xor($temp[1]);
+                $s1 = $s1->bitwise_xor($temp[2]);
+                $temp = [
+                    $e->bitwise_and($f),
+                    $g->bitwise_and($e->bitwise_not())
+                ];
+                $ch = $temp[0]->bitwise_xor($temp[1]);
+                $t1 = $h->add($s1);
+                $t1 = $t1->add($ch);
+                $t1 = $t1->add($k[$i]);
+                $t1 = $t1->add($w[$i]);
+
+                $h = clone $g;
+                $g = clone $f;
+                $f = clone $e;
+                $e = $d->add($t1);
+                $d = clone $c;
+                $c = clone $b;
+                $b = clone $a;
+                $a = $t1->add($t2);
+            }
+
+            // Add this chunk's hash to result so far
+            $hash = [
+                $hash[0]->add($a),
+                $hash[1]->add($b),
+                $hash[2]->add($c),
+                $hash[3]->add($d),
+                $hash[4]->add($e),
+                $hash[5]->add($f),
+                $hash[6]->add($g),
+                $hash[7]->add($h)
+            ];
+        }
+
+        // Produce the final hash value (big-endian)
+        // (\phpseclib3\Crypt\Hash::hash() trims the output for hashes but not for HMACs.  as such, we trim the output here)
+        $temp = $hash[0]->toBytes() . $hash[1]->toBytes() . $hash[2]->toBytes() . $hash[3]->toBytes() .
+                $hash[4]->toBytes() . $hash[5]->toBytes() . $hash[6]->toBytes() . $hash[7]->toBytes();
+
+        return $temp;
+    }
+
+    /**
+     *  __toString() magic method
+     */
+    public function __toString()
+    {
+        return $this->getHash();
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/PublicKeyLoader.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/PublicKeyLoader.php
new file mode 100644
index 0000000..61afbae
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/PublicKeyLoader.php
@@ -0,0 +1,111 @@
+<?php
+
+/**
+ * PublicKeyLoader
+ *
+ * Returns a PublicKey or PrivateKey object.
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2009 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt;
+
+use phpseclib3\Crypt\Common\AsymmetricKey;
+use phpseclib3\Crypt\Common\PrivateKey;
+use phpseclib3\Crypt\Common\PublicKey;
+use phpseclib3\Exception\NoKeyLoadedException;
+use phpseclib3\File\X509;
+
+/**
+ * PublicKeyLoader
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class PublicKeyLoader
+{
+    /**
+     * Loads a public or private key
+     *
+     * @return AsymmetricKey
+     * @param string|array $key
+     * @param string $password optional
+     */
+    public static function load($key, $password = false)
+    {
+        try {
+            return EC::load($key, $password);
+        } catch (NoKeyLoadedException $e) {
+        }
+
+        try {
+            return RSA::load($key, $password);
+        } catch (NoKeyLoadedException $e) {
+        }
+
+        try {
+            return DSA::load($key, $password);
+        } catch (NoKeyLoadedException $e) {
+        }
+
+        try {
+            $x509 = new X509();
+            $x509->loadX509($key);
+            $key = $x509->getPublicKey();
+            if ($key) {
+                return $key;
+            }
+        } catch (\Exception $e) {
+        }
+
+        throw new NoKeyLoadedException('Unable to read key');
+    }
+
+    /**
+     * Loads a private key
+     *
+     * @return PrivateKey
+     * @param string|array $key
+     * @param string $password optional
+     */
+    public static function loadPrivateKey($key, $password = false)
+    {
+        $key = self::load($key, $password);
+        if (!$key instanceof PrivateKey) {
+            throw new NoKeyLoadedException('The key that was loaded was not a private key');
+        }
+        return $key;
+    }
+
+    /**
+     * Loads a public key
+     *
+     * @return PublicKey
+     * @param string|array $key
+     */
+    public static function loadPublicKey($key)
+    {
+        $key = self::load($key);
+        if (!$key instanceof PublicKey) {
+            throw new NoKeyLoadedException('The key that was loaded was not a public key');
+        }
+        return $key;
+    }
+
+    /**
+     * Loads parameters
+     *
+     * @return AsymmetricKey
+     * @param string|array $key
+     */
+    public static function loadParameters($key)
+    {
+        $key = self::load($key);
+        if (!$key instanceof PrivateKey && !$key instanceof PublicKey) {
+            throw new NoKeyLoadedException('The key that was loaded was not a parameter');
+        }
+        return $key;
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/RC2.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/RC2.php
new file mode 100644
index 0000000..654c906
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/RC2.php
@@ -0,0 +1,640 @@
+<?php
+
+/**
+ * Pure-PHP implementation of RC2.
+ *
+ * Uses mcrypt, if available, and an internal implementation, otherwise.
+ *
+ * PHP version 5
+ *
+ * Useful resources are as follows:
+ *
+ *  - {@link http://tools.ietf.org/html/rfc2268}
+ *
+ * Here's a short example of how to use this library:
+ * <code>
+ * <?php
+ *    include 'vendor/autoload.php';
+ *
+ *    $rc2 = new \phpseclib3\Crypt\RC2('ctr');
+ *
+ *    $rc2->setKey('abcdefgh');
+ *
+ *    $plaintext = str_repeat('a', 1024);
+ *
+ *    echo $rc2->decrypt($rc2->encrypt($plaintext));
+ * ?>
+ * </code>
+ *
+ * @author   Patrick Monnerat <pm@datasphere.ch>
+ * @license  http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link     http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt;
+
+use phpseclib3\Crypt\Common\BlockCipher;
+use phpseclib3\Exception\BadModeException;
+
+/**
+ * Pure-PHP implementation of RC2.
+ *
+ */
+class RC2 extends BlockCipher
+{
+    /**
+     * Block Length of the cipher
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::block_size
+     * @var int
+     */
+    protected $block_size = 8;
+
+    /**
+     * The Key
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::key
+     * @see self::setKey()
+     * @var string
+     */
+    protected $key;
+
+    /**
+     * The Original (unpadded) Key
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::key
+     * @see self::setKey()
+     * @see self::encrypt()
+     * @see self::decrypt()
+     * @var string
+     */
+    private $orig_key;
+
+    /**
+     * Key Length (in bytes)
+     *
+     * @see \phpseclib3\Crypt\RC2::setKeyLength()
+     * @var int
+     */
+    protected $key_length = 16; // = 128 bits
+
+    /**
+     * The mcrypt specific name of the cipher
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::cipher_name_mcrypt
+     * @var string
+     */
+    protected $cipher_name_mcrypt = 'rc2';
+
+    /**
+     * Optimizing value while CFB-encrypting
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::cfb_init_len
+     * @var int
+     */
+    protected $cfb_init_len = 500;
+
+    /**
+     * The key length in bits.
+     *
+     * {@internal Should be in range [1..1024].}
+     *
+     * {@internal Changing this value after setting the key has no effect.}
+     *
+     * @see self::setKeyLength()
+     * @see self::setKey()
+     * @var int
+     */
+    private $default_key_length = 1024;
+
+    /**
+     * The key length in bits.
+     *
+     * {@internal Should be in range [1..1024].}
+     *
+     * @see self::isValidEnine()
+     * @see self::setKey()
+     * @var int
+     */
+    private $current_key_length;
+
+    /**
+     * The Key Schedule
+     *
+     * @see self::setupKey()
+     * @var array
+     */
+    private $keys;
+
+    /**
+     * Key expansion randomization table.
+     * Twice the same 256-value sequence to save a modulus in key expansion.
+     *
+     * @see self::setKey()
+     * @var array
+     */
+    private static $pitable = [
+        0xD9, 0x78, 0xF9, 0xC4, 0x19, 0xDD, 0xB5, 0xED,
+        0x28, 0xE9, 0xFD, 0x79, 0x4A, 0xA0, 0xD8, 0x9D,
+        0xC6, 0x7E, 0x37, 0x83, 0x2B, 0x76, 0x53, 0x8E,
+        0x62, 0x4C, 0x64, 0x88, 0x44, 0x8B, 0xFB, 0xA2,
+        0x17, 0x9A, 0x59, 0xF5, 0x87, 0xB3, 0x4F, 0x13,
+        0x61, 0x45, 0x6D, 0x8D, 0x09, 0x81, 0x7D, 0x32,
+        0xBD, 0x8F, 0x40, 0xEB, 0x86, 0xB7, 0x7B, 0x0B,
+        0xF0, 0x95, 0x21, 0x22, 0x5C, 0x6B, 0x4E, 0x82,
+        0x54, 0xD6, 0x65, 0x93, 0xCE, 0x60, 0xB2, 0x1C,
+        0x73, 0x56, 0xC0, 0x14, 0xA7, 0x8C, 0xF1, 0xDC,
+        0x12, 0x75, 0xCA, 0x1F, 0x3B, 0xBE, 0xE4, 0xD1,
+        0x42, 0x3D, 0xD4, 0x30, 0xA3, 0x3C, 0xB6, 0x26,
+        0x6F, 0xBF, 0x0E, 0xDA, 0x46, 0x69, 0x07, 0x57,
+        0x27, 0xF2, 0x1D, 0x9B, 0xBC, 0x94, 0x43, 0x03,
+        0xF8, 0x11, 0xC7, 0xF6, 0x90, 0xEF, 0x3E, 0xE7,
+        0x06, 0xC3, 0xD5, 0x2F, 0xC8, 0x66, 0x1E, 0xD7,
+        0x08, 0xE8, 0xEA, 0xDE, 0x80, 0x52, 0xEE, 0xF7,
+        0x84, 0xAA, 0x72, 0xAC, 0x35, 0x4D, 0x6A, 0x2A,
+        0x96, 0x1A, 0xD2, 0x71, 0x5A, 0x15, 0x49, 0x74,
+        0x4B, 0x9F, 0xD0, 0x5E, 0x04, 0x18, 0xA4, 0xEC,
+        0xC2, 0xE0, 0x41, 0x6E, 0x0F, 0x51, 0xCB, 0xCC,
+        0x24, 0x91, 0xAF, 0x50, 0xA1, 0xF4, 0x70, 0x39,
+        0x99, 0x7C, 0x3A, 0x85, 0x23, 0xB8, 0xB4, 0x7A,
+        0xFC, 0x02, 0x36, 0x5B, 0x25, 0x55, 0x97, 0x31,
+        0x2D, 0x5D, 0xFA, 0x98, 0xE3, 0x8A, 0x92, 0xAE,
+        0x05, 0xDF, 0x29, 0x10, 0x67, 0x6C, 0xBA, 0xC9,
+        0xD3, 0x00, 0xE6, 0xCF, 0xE1, 0x9E, 0xA8, 0x2C,
+        0x63, 0x16, 0x01, 0x3F, 0x58, 0xE2, 0x89, 0xA9,
+        0x0D, 0x38, 0x34, 0x1B, 0xAB, 0x33, 0xFF, 0xB0,
+        0xBB, 0x48, 0x0C, 0x5F, 0xB9, 0xB1, 0xCD, 0x2E,
+        0xC5, 0xF3, 0xDB, 0x47, 0xE5, 0xA5, 0x9C, 0x77,
+        0x0A, 0xA6, 0x20, 0x68, 0xFE, 0x7F, 0xC1, 0xAD,
+        0xD9, 0x78, 0xF9, 0xC4, 0x19, 0xDD, 0xB5, 0xED,
+        0x28, 0xE9, 0xFD, 0x79, 0x4A, 0xA0, 0xD8, 0x9D,
+        0xC6, 0x7E, 0x37, 0x83, 0x2B, 0x76, 0x53, 0x8E,
+        0x62, 0x4C, 0x64, 0x88, 0x44, 0x8B, 0xFB, 0xA2,
+        0x17, 0x9A, 0x59, 0xF5, 0x87, 0xB3, 0x4F, 0x13,
+        0x61, 0x45, 0x6D, 0x8D, 0x09, 0x81, 0x7D, 0x32,
+        0xBD, 0x8F, 0x40, 0xEB, 0x86, 0xB7, 0x7B, 0x0B,
+        0xF0, 0x95, 0x21, 0x22, 0x5C, 0x6B, 0x4E, 0x82,
+        0x54, 0xD6, 0x65, 0x93, 0xCE, 0x60, 0xB2, 0x1C,
+        0x73, 0x56, 0xC0, 0x14, 0xA7, 0x8C, 0xF1, 0xDC,
+        0x12, 0x75, 0xCA, 0x1F, 0x3B, 0xBE, 0xE4, 0xD1,
+        0x42, 0x3D, 0xD4, 0x30, 0xA3, 0x3C, 0xB6, 0x26,
+        0x6F, 0xBF, 0x0E, 0xDA, 0x46, 0x69, 0x07, 0x57,
+        0x27, 0xF2, 0x1D, 0x9B, 0xBC, 0x94, 0x43, 0x03,
+        0xF8, 0x11, 0xC7, 0xF6, 0x90, 0xEF, 0x3E, 0xE7,
+        0x06, 0xC3, 0xD5, 0x2F, 0xC8, 0x66, 0x1E, 0xD7,
+        0x08, 0xE8, 0xEA, 0xDE, 0x80, 0x52, 0xEE, 0xF7,
+        0x84, 0xAA, 0x72, 0xAC, 0x35, 0x4D, 0x6A, 0x2A,
+        0x96, 0x1A, 0xD2, 0x71, 0x5A, 0x15, 0x49, 0x74,
+        0x4B, 0x9F, 0xD0, 0x5E, 0x04, 0x18, 0xA4, 0xEC,
+        0xC2, 0xE0, 0x41, 0x6E, 0x0F, 0x51, 0xCB, 0xCC,
+        0x24, 0x91, 0xAF, 0x50, 0xA1, 0xF4, 0x70, 0x39,
+        0x99, 0x7C, 0x3A, 0x85, 0x23, 0xB8, 0xB4, 0x7A,
+        0xFC, 0x02, 0x36, 0x5B, 0x25, 0x55, 0x97, 0x31,
+        0x2D, 0x5D, 0xFA, 0x98, 0xE3, 0x8A, 0x92, 0xAE,
+        0x05, 0xDF, 0x29, 0x10, 0x67, 0x6C, 0xBA, 0xC9,
+        0xD3, 0x00, 0xE6, 0xCF, 0xE1, 0x9E, 0xA8, 0x2C,
+        0x63, 0x16, 0x01, 0x3F, 0x58, 0xE2, 0x89, 0xA9,
+        0x0D, 0x38, 0x34, 0x1B, 0xAB, 0x33, 0xFF, 0xB0,
+        0xBB, 0x48, 0x0C, 0x5F, 0xB9, 0xB1, 0xCD, 0x2E,
+        0xC5, 0xF3, 0xDB, 0x47, 0xE5, 0xA5, 0x9C, 0x77,
+        0x0A, 0xA6, 0x20, 0x68, 0xFE, 0x7F, 0xC1, 0xAD
+    ];
+
+    /**
+     * Inverse key expansion randomization table.
+     *
+     * @see self::setKey()
+     * @var array
+     */
+    private static $invpitable = [
+        0xD1, 0xDA, 0xB9, 0x6F, 0x9C, 0xC8, 0x78, 0x66,
+        0x80, 0x2C, 0xF8, 0x37, 0xEA, 0xE0, 0x62, 0xA4,
+        0xCB, 0x71, 0x50, 0x27, 0x4B, 0x95, 0xD9, 0x20,
+        0x9D, 0x04, 0x91, 0xE3, 0x47, 0x6A, 0x7E, 0x53,
+        0xFA, 0x3A, 0x3B, 0xB4, 0xA8, 0xBC, 0x5F, 0x68,
+        0x08, 0xCA, 0x8F, 0x14, 0xD7, 0xC0, 0xEF, 0x7B,
+        0x5B, 0xBF, 0x2F, 0xE5, 0xE2, 0x8C, 0xBA, 0x12,
+        0xE1, 0xAF, 0xB2, 0x54, 0x5D, 0x59, 0x76, 0xDB,
+        0x32, 0xA2, 0x58, 0x6E, 0x1C, 0x29, 0x64, 0xF3,
+        0xE9, 0x96, 0x0C, 0x98, 0x19, 0x8D, 0x3E, 0x26,
+        0xAB, 0xA5, 0x85, 0x16, 0x40, 0xBD, 0x49, 0x67,
+        0xDC, 0x22, 0x94, 0xBB, 0x3C, 0xC1, 0x9B, 0xEB,
+        0x45, 0x28, 0x18, 0xD8, 0x1A, 0x42, 0x7D, 0xCC,
+        0xFB, 0x65, 0x8E, 0x3D, 0xCD, 0x2A, 0xA3, 0x60,
+        0xAE, 0x93, 0x8A, 0x48, 0x97, 0x51, 0x15, 0xF7,
+        0x01, 0x0B, 0xB7, 0x36, 0xB1, 0x2E, 0x11, 0xFD,
+        0x84, 0x2D, 0x3F, 0x13, 0x88, 0xB3, 0x34, 0x24,
+        0x1B, 0xDE, 0xC5, 0x1D, 0x4D, 0x2B, 0x17, 0x31,
+        0x74, 0xA9, 0xC6, 0x43, 0x6D, 0x39, 0x90, 0xBE,
+        0xC3, 0xB0, 0x21, 0x6B, 0xF6, 0x0F, 0xD5, 0x99,
+        0x0D, 0xAC, 0x1F, 0x5C, 0x9E, 0xF5, 0xF9, 0x4C,
+        0xD6, 0xDF, 0x89, 0xE4, 0x8B, 0xFF, 0xC7, 0xAA,
+        0xE7, 0xED, 0x46, 0x25, 0xB6, 0x06, 0x5E, 0x35,
+        0xB5, 0xEC, 0xCE, 0xE8, 0x6C, 0x30, 0x55, 0x61,
+        0x4A, 0xFE, 0xA0, 0x79, 0x03, 0xF0, 0x10, 0x72,
+        0x7C, 0xCF, 0x52, 0xA6, 0xA7, 0xEE, 0x44, 0xD3,
+        0x9A, 0x57, 0x92, 0xD0, 0x5A, 0x7A, 0x41, 0x7F,
+        0x0E, 0x00, 0x63, 0xF2, 0x4F, 0x05, 0x83, 0xC9,
+        0xA1, 0xD4, 0xDD, 0xC4, 0x56, 0xF4, 0xD2, 0x77,
+        0x81, 0x09, 0x82, 0x33, 0x9F, 0x07, 0x86, 0x75,
+        0x38, 0x4E, 0x69, 0xF1, 0xAD, 0x23, 0x73, 0x87,
+        0x70, 0x02, 0xC2, 0x1E, 0xB8, 0x0A, 0xFC, 0xE6
+    ];
+
+    /**
+     * Default Constructor.
+     *
+     * @param string $mode
+     * @throws \InvalidArgumentException if an invalid / unsupported mode is provided
+     */
+    public function __construct($mode)
+    {
+        parent::__construct($mode);
+
+        if ($this->mode == self::MODE_STREAM) {
+            throw new BadModeException('Block ciphers cannot be ran in stream mode');
+        }
+    }
+
+    /**
+     * Test for engine validity
+     *
+     * This is mainly just a wrapper to set things up for \phpseclib3\Crypt\Common\SymmetricKey::isValidEngine()
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::__construct()
+     * @param int $engine
+     * @return bool
+     */
+    protected function isValidEngineHelper($engine)
+    {
+        switch ($engine) {
+            case self::ENGINE_OPENSSL:
+                if ($this->current_key_length != 128 || strlen($this->orig_key) < 16) {
+                    return false;
+                }
+                // quoting https://www.openssl.org/news/openssl-3.0-notes.html, OpenSSL 3.0.1
+                // "Moved all variations of the EVP ciphers CAST5, BF, IDEA, SEED, RC2, RC4, RC5, and DES to the legacy provider"
+                // in theory openssl_get_cipher_methods() should catch this but, on GitHub Actions, at least, it does not
+                if (defined('OPENSSL_VERSION_TEXT') && version_compare(preg_replace('#OpenSSL (\d+\.\d+\.\d+) .*#', '$1', OPENSSL_VERSION_TEXT), '3.0.1', '>=')) {
+                    return false;
+                }
+                $this->cipher_name_openssl_ecb = 'rc2-ecb';
+                $this->cipher_name_openssl = 'rc2-' . $this->openssl_translate_mode();
+        }
+
+        return parent::isValidEngineHelper($engine);
+    }
+
+    /**
+     * Sets the key length.
+     *
+     * Valid key lengths are 8 to 1024.
+     * Calling this function after setting the key has no effect until the next
+     *  \phpseclib3\Crypt\RC2::setKey() call.
+     *
+     * @param int $length in bits
+     * @throws \LengthException if the key length isn't supported
+     */
+    public function setKeyLength($length)
+    {
+        if ($length < 8 || $length > 1024) {
+            throw new \LengthException('Key size of ' . $length . ' bits is not supported by this algorithm. Only keys between 1 and 1024 bits, inclusive, are supported');
+        }
+
+        $this->default_key_length = $this->current_key_length = $length;
+        $this->explicit_key_length = $length >> 3;
+    }
+
+    /**
+     * Returns the current key length
+     *
+     * @return int
+     */
+    public function getKeyLength()
+    {
+        return $this->current_key_length;
+    }
+
+    /**
+     * Sets the key.
+     *
+     * Keys can be of any length. RC2, itself, uses 8 to 1024 bit keys (eg.
+     * strlen($key) <= 128), however, we only use the first 128 bytes if $key
+     * has more then 128 bytes in it, and set $key to a single null byte if
+     * it is empty.
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::setKey()
+     * @param string $key
+     * @param int|boolean $t1 optional Effective key length in bits.
+     * @throws \LengthException if the key length isn't supported
+     */
+    public function setKey($key, $t1 = false)
+    {
+        $this->orig_key = $key;
+
+        if ($t1 === false) {
+            $t1 = $this->default_key_length;
+        }
+
+        if ($t1 < 1 || $t1 > 1024) {
+            throw new \LengthException('Key size of ' . $length . ' bits is not supported by this algorithm. Only keys between 1 and 1024 bits, inclusive, are supported');
+        }
+
+        $this->current_key_length = $t1;
+        if (strlen($key) < 1 || strlen($key) > 128) {
+            throw new \LengthException('Key of size ' . strlen($key) . ' not supported by this algorithm. Only keys of sizes between 8 and 1024 bits, inclusive, are supported');
+        }
+
+        $t = strlen($key);
+
+        // The mcrypt RC2 implementation only supports effective key length
+        // of 1024 bits. It is however possible to handle effective key
+        // lengths in range 1..1024 by expanding the key and applying
+        // inverse pitable mapping to the first byte before submitting it
+        // to mcrypt.
+
+        // Key expansion.
+        $l = array_values(unpack('C*', $key));
+        $t8 = ($t1 + 7) >> 3;
+        $tm = 0xFF >> (8 * $t8 - $t1);
+
+        // Expand key.
+        $pitable = self::$pitable;
+        for ($i = $t; $i < 128; $i++) {
+            $l[$i] = $pitable[$l[$i - 1] + $l[$i - $t]];
+        }
+        $i = 128 - $t8;
+        $l[$i] = $pitable[$l[$i] & $tm];
+        while ($i--) {
+            $l[$i] = $pitable[$l[$i + 1] ^ $l[$i + $t8]];
+        }
+
+        // Prepare the key for mcrypt.
+        $l[0] = self::$invpitable[$l[0]];
+        array_unshift($l, 'C*');
+
+        $this->key = pack(...$l);
+        $this->key_length = strlen($this->key);
+        $this->changed = $this->nonIVChanged = true;
+        $this->setEngine();
+    }
+
+    /**
+     * Encrypts a message.
+     *
+     * Mostly a wrapper for \phpseclib3\Crypt\Common\SymmetricKey::encrypt, with some additional OpenSSL handling code
+     *
+     * @see self::decrypt()
+     * @param string $plaintext
+     * @return string $ciphertext
+     */
+    public function encrypt($plaintext)
+    {
+        if ($this->engine == self::ENGINE_OPENSSL) {
+            $temp = $this->key;
+            $this->key = $this->orig_key;
+            $result = parent::encrypt($plaintext);
+            $this->key = $temp;
+            return $result;
+        }
+
+        return parent::encrypt($plaintext);
+    }
+
+    /**
+     * Decrypts a message.
+     *
+     * Mostly a wrapper for \phpseclib3\Crypt\Common\SymmetricKey::decrypt, with some additional OpenSSL handling code
+     *
+     * @see self::encrypt()
+     * @param string $ciphertext
+     * @return string $plaintext
+     */
+    public function decrypt($ciphertext)
+    {
+        if ($this->engine == self::ENGINE_OPENSSL) {
+            $temp = $this->key;
+            $this->key = $this->orig_key;
+            $result = parent::decrypt($ciphertext);
+            $this->key = $temp;
+            return $result;
+        }
+
+        return parent::decrypt($ciphertext);
+    }
+
+    /**
+     * Encrypts a block
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::encryptBlock()
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::encrypt()
+     * @param string $in
+     * @return string
+     */
+    protected function encryptBlock($in)
+    {
+        list($r0, $r1, $r2, $r3) = array_values(unpack('v*', $in));
+        $keys = $this->keys;
+        $limit = 20;
+        $actions = [$limit => 44, 44 => 64];
+        $j = 0;
+
+        for (;;) {
+            // Mixing round.
+            $r0 = (($r0 + $keys[$j++] + ((($r1 ^ $r2) & $r3) ^ $r1)) & 0xFFFF) << 1;
+            $r0 |= $r0 >> 16;
+            $r1 = (($r1 + $keys[$j++] + ((($r2 ^ $r3) & $r0) ^ $r2)) & 0xFFFF) << 2;
+            $r1 |= $r1 >> 16;
+            $r2 = (($r2 + $keys[$j++] + ((($r3 ^ $r0) & $r1) ^ $r3)) & 0xFFFF) << 3;
+            $r2 |= $r2 >> 16;
+            $r3 = (($r3 + $keys[$j++] + ((($r0 ^ $r1) & $r2) ^ $r0)) & 0xFFFF) << 5;
+            $r3 |= $r3 >> 16;
+
+            if ($j === $limit) {
+                if ($limit === 64) {
+                    break;
+                }
+
+                // Mashing round.
+                $r0 += $keys[$r3 & 0x3F];
+                $r1 += $keys[$r0 & 0x3F];
+                $r2 += $keys[$r1 & 0x3F];
+                $r3 += $keys[$r2 & 0x3F];
+                $limit = $actions[$limit];
+            }
+        }
+
+        return pack('vvvv', $r0, $r1, $r2, $r3);
+    }
+
+    /**
+     * Decrypts a block
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::decryptBlock()
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::decrypt()
+     * @param string $in
+     * @return string
+     */
+    protected function decryptBlock($in)
+    {
+        list($r0, $r1, $r2, $r3) = array_values(unpack('v*', $in));
+        $keys = $this->keys;
+        $limit = 44;
+        $actions = [$limit => 20, 20 => 0];
+        $j = 64;
+
+        for (;;) {
+            // R-mixing round.
+            $r3 = ($r3 | ($r3 << 16)) >> 5;
+            $r3 = ($r3 - $keys[--$j] - ((($r0 ^ $r1) & $r2) ^ $r0)) & 0xFFFF;
+            $r2 = ($r2 | ($r2 << 16)) >> 3;
+            $r2 = ($r2 - $keys[--$j] - ((($r3 ^ $r0) & $r1) ^ $r3)) & 0xFFFF;
+            $r1 = ($r1 | ($r1 << 16)) >> 2;
+            $r1 = ($r1 - $keys[--$j] - ((($r2 ^ $r3) & $r0) ^ $r2)) & 0xFFFF;
+            $r0 = ($r0 | ($r0 << 16)) >> 1;
+            $r0 = ($r0 - $keys[--$j] - ((($r1 ^ $r2) & $r3) ^ $r1)) & 0xFFFF;
+
+            if ($j === $limit) {
+                if ($limit === 0) {
+                    break;
+                }
+
+                // R-mashing round.
+                $r3 = ($r3 - $keys[$r2 & 0x3F]) & 0xFFFF;
+                $r2 = ($r2 - $keys[$r1 & 0x3F]) & 0xFFFF;
+                $r1 = ($r1 - $keys[$r0 & 0x3F]) & 0xFFFF;
+                $r0 = ($r0 - $keys[$r3 & 0x3F]) & 0xFFFF;
+                $limit = $actions[$limit];
+            }
+        }
+
+        return pack('vvvv', $r0, $r1, $r2, $r3);
+    }
+
+    /**
+     * Creates the key schedule
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::setupKey()
+     */
+    protected function setupKey()
+    {
+        if (!isset($this->key)) {
+            $this->setKey('');
+        }
+
+        // Key has already been expanded in \phpseclib3\Crypt\RC2::setKey():
+        // Only the first value must be altered.
+        $l = unpack('Ca/Cb/v*', $this->key);
+        array_unshift($l, self::$pitable[$l['a']] | ($l['b'] << 8));
+        unset($l['a']);
+        unset($l['b']);
+        $this->keys = $l;
+    }
+
+    /**
+     * Setup the performance-optimized function for de/encrypt()
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::setupInlineCrypt()
+     */
+    protected function setupInlineCrypt()
+    {
+        // Init code for both, encrypt and decrypt.
+        $init_crypt = '$keys = $this->keys;';
+
+        $keys = $this->keys;
+
+        // $in is the current 8 bytes block which has to be en/decrypt
+        $encrypt_block = $decrypt_block = '
+            $in = unpack("v4", $in);
+            $r0 = $in[1];
+            $r1 = $in[2];
+            $r2 = $in[3];
+            $r3 = $in[4];
+        ';
+
+        // Create code for encryption.
+        $limit = 20;
+        $actions = [$limit => 44, 44 => 64];
+        $j = 0;
+
+        for (;;) {
+            // Mixing round.
+            $encrypt_block .= '
+                $r0 = (($r0 + ' . $keys[$j++] . ' +
+                       ((($r1 ^ $r2) & $r3) ^ $r1)) & 0xFFFF) << 1;
+                $r0 |= $r0 >> 16;
+                $r1 = (($r1 + ' . $keys[$j++] . ' +
+                       ((($r2 ^ $r3) & $r0) ^ $r2)) & 0xFFFF) << 2;
+                $r1 |= $r1 >> 16;
+                $r2 = (($r2 + ' . $keys[$j++] . ' +
+                       ((($r3 ^ $r0) & $r1) ^ $r3)) & 0xFFFF) << 3;
+                $r2 |= $r2 >> 16;
+                $r3 = (($r3 + ' . $keys[$j++] . ' +
+                       ((($r0 ^ $r1) & $r2) ^ $r0)) & 0xFFFF) << 5;
+                $r3 |= $r3 >> 16;';
+
+            if ($j === $limit) {
+                if ($limit === 64) {
+                    break;
+                }
+
+                // Mashing round.
+                $encrypt_block .= '
+                    $r0 += $keys[$r3 & 0x3F];
+                    $r1 += $keys[$r0 & 0x3F];
+                    $r2 += $keys[$r1 & 0x3F];
+                    $r3 += $keys[$r2 & 0x3F];';
+                $limit = $actions[$limit];
+            }
+        }
+
+        $encrypt_block .= '$in = pack("v4", $r0, $r1, $r2, $r3);';
+
+        // Create code for decryption.
+        $limit = 44;
+        $actions = [$limit => 20, 20 => 0];
+        $j = 64;
+
+        for (;;) {
+            // R-mixing round.
+            $decrypt_block .= '
+                $r3 = ($r3 | ($r3 << 16)) >> 5;
+                $r3 = ($r3 - ' . $keys[--$j] . ' -
+                       ((($r0 ^ $r1) & $r2) ^ $r0)) & 0xFFFF;
+                $r2 = ($r2 | ($r2 << 16)) >> 3;
+                $r2 = ($r2 - ' . $keys[--$j] . ' -
+                       ((($r3 ^ $r0) & $r1) ^ $r3)) & 0xFFFF;
+                $r1 = ($r1 | ($r1 << 16)) >> 2;
+                $r1 = ($r1 - ' . $keys[--$j] . ' -
+                       ((($r2 ^ $r3) & $r0) ^ $r2)) & 0xFFFF;
+                $r0 = ($r0 | ($r0 << 16)) >> 1;
+                $r0 = ($r0 - ' . $keys[--$j] . ' -
+                       ((($r1 ^ $r2) & $r3) ^ $r1)) & 0xFFFF;';
+
+            if ($j === $limit) {
+                if ($limit === 0) {
+                    break;
+                }
+
+                // R-mashing round.
+                $decrypt_block .= '
+                    $r3 = ($r3 - $keys[$r2 & 0x3F]) & 0xFFFF;
+                    $r2 = ($r2 - $keys[$r1 & 0x3F]) & 0xFFFF;
+                    $r1 = ($r1 - $keys[$r0 & 0x3F]) & 0xFFFF;
+                    $r0 = ($r0 - $keys[$r3 & 0x3F]) & 0xFFFF;';
+                $limit = $actions[$limit];
+            }
+        }
+
+        $decrypt_block .= '$in = pack("v4", $r0, $r1, $r2, $r3);';
+
+        // Creates the inline-crypt function
+        $this->inline_crypt = $this->createInlineCryptFunction(
+            [
+               'init_crypt'    => $init_crypt,
+               'encrypt_block' => $encrypt_block,
+               'decrypt_block' => $decrypt_block
+            ]
+        );
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/RC4.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/RC4.php
new file mode 100644
index 0000000..5f3bff2
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/RC4.php
@@ -0,0 +1,280 @@
+<?php
+
+/**
+ * Pure-PHP implementation of RC4.
+ *
+ * Uses mcrypt, if available, and an internal implementation, otherwise.
+ *
+ * PHP version 5
+ *
+ * Useful resources are as follows:
+ *
+ *  - {@link http://www.mozilla.org/projects/security/pki/nss/draft-kaukonen-cipher-arcfour-03.txt ARCFOUR Algorithm}
+ *  - {@link http://en.wikipedia.org/wiki/RC4 - Wikipedia: RC4}
+ *
+ * RC4 is also known as ARCFOUR or ARC4.  The reason is elaborated upon at Wikipedia.  This class is named RC4 and not
+ * ARCFOUR or ARC4 because RC4 is how it is referred to in the SSH1 specification.
+ *
+ * Here's a short example of how to use this library:
+ * <code>
+ * <?php
+ *    include 'vendor/autoload.php';
+ *
+ *    $rc4 = new \phpseclib3\Crypt\RC4();
+ *
+ *    $rc4->setKey('abcdefgh');
+ *
+ *    $size = 10 * 1024;
+ *    $plaintext = '';
+ *    for ($i = 0; $i < $size; $i++) {
+ *        $plaintext.= 'a';
+ *    }
+ *
+ *    echo $rc4->decrypt($rc4->encrypt($plaintext));
+ * ?>
+ * </code>
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2007 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt;
+
+use phpseclib3\Crypt\Common\StreamCipher;
+
+/**
+ * Pure-PHP implementation of RC4.
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+class RC4 extends StreamCipher
+{
+    /**
+     * @see \phpseclib3\Crypt\RC4::_crypt()
+     */
+    const ENCRYPT = 0;
+
+    /**
+     * @see \phpseclib3\Crypt\RC4::_crypt()
+     */
+    const DECRYPT = 1;
+
+    /**
+     * Key Length (in bytes)
+     *
+     * @see \phpseclib3\Crypt\RC4::setKeyLength()
+     * @var int
+     */
+    protected $key_length = 128; // = 1024 bits
+
+    /**
+     * The mcrypt specific name of the cipher
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::cipher_name_mcrypt
+     * @var string
+     */
+    protected $cipher_name_mcrypt = 'arcfour';
+
+    /**
+     * The Key
+     *
+     * @see self::setKey()
+     * @var string
+     */
+    protected $key;
+
+    /**
+     * The Key Stream for decryption and encryption
+     *
+     * @see self::setKey()
+     * @var array
+     */
+    private $stream;
+
+    /**
+     * Test for engine validity
+     *
+     * This is mainly just a wrapper to set things up for \phpseclib3\Crypt\Common\SymmetricKey::isValidEngine()
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::__construct()
+     * @param int $engine
+     * @return bool
+     */
+    protected function isValidEngineHelper($engine)
+    {
+        if ($engine == self::ENGINE_OPENSSL) {
+            if ($this->continuousBuffer) {
+                return false;
+            }
+            // quoting https://www.openssl.org/news/openssl-3.0-notes.html, OpenSSL 3.0.1
+            // "Moved all variations of the EVP ciphers CAST5, BF, IDEA, SEED, RC2, RC4, RC5, and DES to the legacy provider"
+            // in theory openssl_get_cipher_methods() should catch this but, on GitHub Actions, at least, it does not
+            if (defined('OPENSSL_VERSION_TEXT') && version_compare(preg_replace('#OpenSSL (\d+\.\d+\.\d+) .*#', '$1', OPENSSL_VERSION_TEXT), '3.0.1', '>=')) {
+                return false;
+            }
+            $this->cipher_name_openssl = 'rc4-40';
+        }
+
+        return parent::isValidEngineHelper($engine);
+    }
+
+    /**
+     * Sets the key length
+     *
+     * Keys can be between 1 and 256 bytes long.
+     *
+     * @param int $length
+     * @throws \LengthException if the key length is invalid
+     */
+    public function setKeyLength($length)
+    {
+        if ($length < 8 || $length > 2048) {
+            throw new \LengthException('Key size of ' . $length . ' bits is not supported by this algorithm. Only keys between 1 and 256 bytes are supported');
+        }
+
+        $this->key_length = $length >> 3;
+
+        parent::setKeyLength($length);
+    }
+
+    /**
+     * Sets the key length
+     *
+     * Keys can be between 1 and 256 bytes long.
+     *
+     * @param string $key
+     */
+    public function setKey($key)
+    {
+        $length = strlen($key);
+        if ($length < 1 || $length > 256) {
+            throw new \LengthException('Key size of ' . $length . ' bytes is not supported by RC4. Keys must be between 1 and 256 bytes long');
+        }
+
+        parent::setKey($key);
+    }
+
+    /**
+     * Encrypts a message.
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::decrypt()
+     * @see self::crypt()
+     * @param string $plaintext
+     * @return string $ciphertext
+     */
+    public function encrypt($plaintext)
+    {
+        if ($this->engine != self::ENGINE_INTERNAL) {
+            return parent::encrypt($plaintext);
+        }
+        return $this->crypt($plaintext, self::ENCRYPT);
+    }
+
+    /**
+     * Decrypts a message.
+     *
+     * $this->decrypt($this->encrypt($plaintext)) == $this->encrypt($this->encrypt($plaintext)).
+     * At least if the continuous buffer is disabled.
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::encrypt()
+     * @see self::crypt()
+     * @param string $ciphertext
+     * @return string $plaintext
+     */
+    public function decrypt($ciphertext)
+    {
+        if ($this->engine != self::ENGINE_INTERNAL) {
+            return parent::decrypt($ciphertext);
+        }
+        return $this->crypt($ciphertext, self::DECRYPT);
+    }
+
+    /**
+     * Encrypts a block
+     *
+     * @param string $in
+     */
+    protected function encryptBlock($in)
+    {
+        // RC4 does not utilize this method
+    }
+
+    /**
+     * Decrypts a block
+     *
+     * @param string $in
+     */
+    protected function decryptBlock($in)
+    {
+        // RC4 does not utilize this method
+    }
+
+    /**
+     * Setup the key (expansion)
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::_setupKey()
+     */
+    protected function setupKey()
+    {
+        $key = $this->key;
+        $keyLength = strlen($key);
+        $keyStream = range(0, 255);
+        $j = 0;
+        for ($i = 0; $i < 256; $i++) {
+            $j = ($j + $keyStream[$i] + ord($key[$i % $keyLength])) & 255;
+            $temp = $keyStream[$i];
+            $keyStream[$i] = $keyStream[$j];
+            $keyStream[$j] = $temp;
+        }
+
+        $this->stream = [];
+        $this->stream[self::DECRYPT] = $this->stream[self::ENCRYPT] = [
+            0, // index $i
+            0, // index $j
+            $keyStream
+        ];
+    }
+
+    /**
+     * Encrypts or decrypts a message.
+     *
+     * @see self::encrypt()
+     * @see self::decrypt()
+     * @param string $text
+     * @param int $mode
+     * @return string $text
+     */
+    private function crypt($text, $mode)
+    {
+        if ($this->changed) {
+            $this->setup();
+        }
+
+        $stream = &$this->stream[$mode];
+        if ($this->continuousBuffer) {
+            $i = &$stream[0];
+            $j = &$stream[1];
+            $keyStream = &$stream[2];
+        } else {
+            $i = $stream[0];
+            $j = $stream[1];
+            $keyStream = $stream[2];
+        }
+
+        $len = strlen($text);
+        for ($k = 0; $k < $len; ++$k) {
+            $i = ($i + 1) & 255;
+            $ksi = $keyStream[$i];
+            $j = ($j + $ksi) & 255;
+            $ksj = $keyStream[$j];
+
+            $keyStream[$i] = $ksj;
+            $keyStream[$j] = $ksi;
+            $text[$k] = $text[$k] ^ chr($keyStream[($ksj + $ksi) & 255]);
+        }
+
+        return $text;
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/RSA.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/RSA.php
new file mode 100644
index 0000000..19dcfea
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/RSA.php
@@ -0,0 +1,934 @@
+<?php
+
+/**
+ * Pure-PHP PKCS#1 (v2.1) compliant implementation of RSA.
+ *
+ * PHP version 5
+ *
+ * Here's an example of how to encrypt and decrypt text with this library:
+ * <code>
+ * <?php
+ * include 'vendor/autoload.php';
+ *
+ * $private = \phpseclib3\Crypt\RSA::createKey();
+ * $public = $private->getPublicKey();
+ *
+ * $plaintext = 'terrafrost';
+ *
+ * $ciphertext = $public->encrypt($plaintext);
+ *
+ * echo $private->decrypt($ciphertext);
+ * ?>
+ * </code>
+ *
+ * Here's an example of how to create signatures and verify signatures with this library:
+ * <code>
+ * <?php
+ * include 'vendor/autoload.php';
+ *
+ * $private = \phpseclib3\Crypt\RSA::createKey();
+ * $public = $private->getPublicKey();
+ *
+ * $plaintext = 'terrafrost';
+ *
+ * $signature = $private->sign($plaintext);
+ *
+ * echo $public->verify($plaintext, $signature) ? 'verified' : 'unverified';
+ * ?>
+ * </code>
+ *
+ * One thing to consider when using this: so phpseclib uses PSS mode by default.
+ * Technically, id-RSASSA-PSS has a different key format than rsaEncryption. So
+ * should phpseclib save to the id-RSASSA-PSS format by default or the
+ * rsaEncryption format? For stand-alone keys I figure rsaEncryption is better
+ * because SSH doesn't use PSS and idk how many SSH servers would be able to
+ * decode an id-RSASSA-PSS key. For X.509 certificates the id-RSASSA-PSS
+ * format is used by default (unless you change it up to use PKCS1 instead)
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2009 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt;
+
+use phpseclib3\Crypt\Common\AsymmetricKey;
+use phpseclib3\Crypt\RSA\Formats\Keys\PSS;
+use phpseclib3\Crypt\RSA\PrivateKey;
+use phpseclib3\Crypt\RSA\PublicKey;
+use phpseclib3\Exception\InconsistentSetupException;
+use phpseclib3\Exception\UnsupportedAlgorithmException;
+use phpseclib3\Math\BigInteger;
+
+/**
+ * Pure-PHP PKCS#1 compliant implementation of RSA.
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class RSA extends AsymmetricKey
+{
+    /**
+     * Algorithm Name
+     *
+     * @var string
+     */
+    const ALGORITHM = 'RSA';
+
+    /**
+     * Use {@link http://en.wikipedia.org/wiki/Optimal_Asymmetric_Encryption_Padding Optimal Asymmetric Encryption Padding}
+     * (OAEP) for encryption / decryption.
+     *
+     * Uses sha256 by default
+     *
+     * @see self::setHash()
+     * @see self::setMGFHash()
+     * @see self::encrypt()
+     * @see self::decrypt()
+     */
+    const ENCRYPTION_OAEP = 1;
+
+    /**
+     * Use PKCS#1 padding.
+     *
+     * Although self::PADDING_OAEP / self::PADDING_PSS  offers more security, including PKCS#1 padding is necessary for purposes of backwards
+     * compatibility with protocols (like SSH-1) written before OAEP's introduction.
+     *
+     * @see self::encrypt()
+     * @see self::decrypt()
+     */
+    const ENCRYPTION_PKCS1 = 2;
+
+    /**
+     * Do not use any padding
+     *
+     * Although this method is not recommended it can none-the-less sometimes be useful if you're trying to decrypt some legacy
+     * stuff, if you're trying to diagnose why an encrypted message isn't decrypting, etc.
+     *
+     * @see self::encrypt()
+     * @see self::decrypt()
+     */
+    const ENCRYPTION_NONE = 4;
+
+    /**
+     * Use the Probabilistic Signature Scheme for signing
+     *
+     * Uses sha256 and 0 as the salt length
+     *
+     * @see self::setSaltLength()
+     * @see self::setMGFHash()
+     * @see self::setHash()
+     * @see self::sign()
+     * @see self::verify()
+     * @see self::setHash()
+     */
+    const SIGNATURE_PSS = 16;
+
+    /**
+     * Use a relaxed version of PKCS#1 padding for signature verification
+     *
+     * @see self::sign()
+     * @see self::verify()
+     * @see self::setHash()
+     */
+    const SIGNATURE_RELAXED_PKCS1 = 32;
+
+    /**
+     * Use PKCS#1 padding for signature verification
+     *
+     * @see self::sign()
+     * @see self::verify()
+     * @see self::setHash()
+     */
+    const SIGNATURE_PKCS1 = 64;
+
+    /**
+     * Encryption padding mode
+     *
+     * @var int
+     */
+    protected $encryptionPadding = self::ENCRYPTION_OAEP;
+
+    /**
+     * Signature padding mode
+     *
+     * @var int
+     */
+    protected $signaturePadding = self::SIGNATURE_PSS;
+
+    /**
+     * Length of hash function output
+     *
+     * @var int
+     */
+    protected $hLen;
+
+    /**
+     * Length of salt
+     *
+     * @var int
+     */
+    protected $sLen;
+
+    /**
+     * Label
+     *
+     * @var string
+     */
+    protected $label = '';
+
+    /**
+     * Hash function for the Mask Generation Function
+     *
+     * @var \phpseclib3\Crypt\Hash
+     */
+    protected $mgfHash;
+
+    /**
+     * Length of MGF hash function output
+     *
+     * @var int
+     */
+    protected $mgfHLen;
+
+    /**
+     * Modulus (ie. n)
+     *
+     * @var \phpseclib3\Math\BigInteger
+     */
+    protected $modulus;
+
+    /**
+     * Modulus length
+     *
+     * @var \phpseclib3\Math\BigInteger
+     */
+    protected $k;
+
+    /**
+     * Exponent (ie. e or d)
+     *
+     * @var \phpseclib3\Math\BigInteger
+     */
+    protected $exponent;
+
+    /**
+     * Default public exponent
+     *
+     * @var int
+     * @link http://en.wikipedia.org/wiki/65537_%28number%29
+     */
+    private static $defaultExponent = 65537;
+
+    /**
+     * Enable Blinding?
+     *
+     * @var bool
+     */
+    protected static $enableBlinding = true;
+
+    /**
+     * OpenSSL configuration file name.
+     *
+     * @see self::createKey()
+     * @var ?string
+     */
+    protected static $configFile;
+
+    /**
+     * Smallest Prime
+     *
+     * Per <http://cseweb.ucsd.edu/~hovav/dist/survey.pdf#page=5>, this number ought not result in primes smaller
+     * than 256 bits. As a consequence if the key you're trying to create is 1024 bits and you've set smallestPrime
+     * to 384 bits then you're going to get a 384 bit prime and a 640 bit prime (384 + 1024 % 384). At least if
+     * engine is set to self::ENGINE_INTERNAL. If Engine is set to self::ENGINE_OPENSSL then smallest Prime is
+     * ignored (ie. multi-prime RSA support is more intended as a way to speed up RSA key generation when there's
+     * a chance neither gmp nor OpenSSL are installed)
+     *
+     * @var int
+     */
+    private static $smallestPrime = 4096;
+
+    /**
+     * Public Exponent
+     *
+     * @var \phpseclib3\Math\BigInteger
+     */
+    protected $publicExponent;
+
+    /**
+     * Sets the public exponent for key generation
+     *
+     * This will be 65537 unless changed.
+     *
+     * @param int $val
+     */
+    public static function setExponent($val)
+    {
+        self::$defaultExponent = $val;
+    }
+
+    /**
+     * Sets the smallest prime number in bits. Used for key generation
+     *
+     * This will be 4096 unless changed.
+     *
+     * @param int $val
+     */
+    public static function setSmallestPrime($val)
+    {
+        self::$smallestPrime = $val;
+    }
+
+    /**
+     * Sets the OpenSSL config file path
+     *
+     * Set to the empty string to use the default config file
+     *
+     * @param string $val
+     */
+    public static function setOpenSSLConfigPath($val)
+    {
+        self::$configFile = $val;
+    }
+
+    /**
+     * Create a private key
+     *
+     * The public key can be extracted from the private key
+     *
+     * @return RSA\PrivateKey
+     * @param int $bits
+     */
+    public static function createKey($bits = 2048)
+    {
+        self::initialize_static_variables();
+
+        $class = new \ReflectionClass(static::class);
+        if ($class->isFinal()) {
+            throw new \RuntimeException('createKey() should not be called from final classes (' . static::class . ')');
+        }
+
+        $regSize = $bits >> 1; // divide by two to see how many bits P and Q would be
+        if ($regSize > self::$smallestPrime) {
+            $num_primes = floor($bits / self::$smallestPrime);
+            $regSize = self::$smallestPrime;
+        } else {
+            $num_primes = 2;
+        }
+
+        if ($num_primes == 2 && $bits >= 384 && self::$defaultExponent == 65537) {
+            if (!isset(self::$engines['PHP'])) {
+                self::useBestEngine();
+            }
+
+            // OpenSSL uses 65537 as the exponent and requires RSA keys be 384 bits minimum
+            if (self::$engines['OpenSSL']) {
+                $config = [];
+                if (self::$configFile) {
+                    $config['config'] = self::$configFile;
+                }
+                $rsa = openssl_pkey_new(['private_key_bits' => $bits] + $config);
+                openssl_pkey_export($rsa, $privatekeystr, null, $config);
+
+                // clear the buffer of error strings stemming from a minimalistic openssl.cnf
+                // https://github.com/php/php-src/issues/11054 talks about other errors this'll pick up
+                while (openssl_error_string() !== false) {
+                }
+
+                return RSA::load($privatekeystr);
+            }
+        }
+
+        static $e;
+        if (!isset($e)) {
+            $e = new BigInteger(self::$defaultExponent);
+        }
+
+        $n = clone self::$one;
+        $exponents = $coefficients = $primes = [];
+        $lcm = [
+            'top' => clone self::$one,
+            'bottom' => false
+        ];
+
+        do {
+            for ($i = 1; $i <= $num_primes; $i++) {
+                if ($i != $num_primes) {
+                    $primes[$i] = BigInteger::randomPrime($regSize);
+                } else {
+                    extract(BigInteger::minMaxBits($bits));
+                    /** @var BigInteger $min
+                     *  @var BigInteger $max
+                     */
+                    list($min) = $min->divide($n);
+                    $min = $min->add(self::$one);
+                    list($max) = $max->divide($n);
+                    $primes[$i] = BigInteger::randomRangePrime($min, $max);
+                }
+
+                // the first coefficient is calculated differently from the rest
+                // ie. instead of being $primes[1]->modInverse($primes[2]), it's $primes[2]->modInverse($primes[1])
+                if ($i > 2) {
+                    $coefficients[$i] = $n->modInverse($primes[$i]);
+                }
+
+                $n = $n->multiply($primes[$i]);
+
+                $temp = $primes[$i]->subtract(self::$one);
+
+                // textbook RSA implementations use Euler's totient function instead of the least common multiple.
+                // see http://en.wikipedia.org/wiki/Euler%27s_totient_function
+                $lcm['top'] = $lcm['top']->multiply($temp);
+                $lcm['bottom'] = $lcm['bottom'] === false ? $temp : $lcm['bottom']->gcd($temp);
+            }
+
+            list($temp) = $lcm['top']->divide($lcm['bottom']);
+            $gcd = $temp->gcd($e);
+            $i0 = 1;
+        } while (!$gcd->equals(self::$one));
+
+        $coefficients[2] = $primes[2]->modInverse($primes[1]);
+
+        $d = $e->modInverse($temp);
+
+        foreach ($primes as $i => $prime) {
+            $temp = $prime->subtract(self::$one);
+            $exponents[$i] = $e->modInverse($temp);
+        }
+
+        // from <http://tools.ietf.org/html/rfc3447#appendix-A.1.2>:
+        // RSAPrivateKey ::= SEQUENCE {
+        //     version           Version,
+        //     modulus           INTEGER,  -- n
+        //     publicExponent    INTEGER,  -- e
+        //     privateExponent   INTEGER,  -- d
+        //     prime1            INTEGER,  -- p
+        //     prime2            INTEGER,  -- q
+        //     exponent1         INTEGER,  -- d mod (p-1)
+        //     exponent2         INTEGER,  -- d mod (q-1)
+        //     coefficient       INTEGER,  -- (inverse of q) mod p
+        //     otherPrimeInfos   OtherPrimeInfos OPTIONAL
+        // }
+        $privatekey = new PrivateKey();
+        $privatekey->modulus = $n;
+        $privatekey->k = $bits >> 3;
+        $privatekey->publicExponent = $e;
+        $privatekey->exponent = $d;
+        $privatekey->primes = $primes;
+        $privatekey->exponents = $exponents;
+        $privatekey->coefficients = $coefficients;
+
+        /*
+        $publickey = new PublicKey;
+        $publickey->modulus = $n;
+        $publickey->k = $bits >> 3;
+        $publickey->exponent = $e;
+        $publickey->publicExponent = $e;
+        $publickey->isPublic = true;
+        */
+
+        return $privatekey;
+    }
+
+    /**
+     * OnLoad Handler
+     *
+     * @return bool
+     */
+    protected static function onLoad(array $components)
+    {
+        $key = $components['isPublicKey'] ?
+            new PublicKey() :
+            new PrivateKey();
+
+        $key->modulus = $components['modulus'];
+        $key->publicExponent = $components['publicExponent'];
+        $key->k = $key->modulus->getLengthInBytes();
+
+        if ($components['isPublicKey'] || !isset($components['privateExponent'])) {
+            $key->exponent = $key->publicExponent;
+        } else {
+            $key->privateExponent = $components['privateExponent'];
+            $key->exponent = $key->privateExponent;
+            $key->primes = $components['primes'];
+            $key->exponents = $components['exponents'];
+            $key->coefficients = $components['coefficients'];
+        }
+
+        if ($components['format'] == PSS::class) {
+            // in the X509 world RSA keys are assumed to use PKCS1 padding by default. only if the key is
+            // explicitly a PSS key is the use of PSS assumed. phpseclib does not work like this. phpseclib
+            // uses PSS padding by default. it assumes the more secure method by default and altho it provides
+            // for the less secure PKCS1 method you have to go out of your way to use it. this is consistent
+            // with the latest trends in crypto. libsodium (NaCl) is actually a little more extreme in that
+            // not only does it defaults to the most secure methods - it doesn't even let you choose less
+            // secure methods
+            //$key = $key->withPadding(self::SIGNATURE_PSS);
+            if (isset($components['hash'])) {
+                $key = $key->withHash($components['hash']);
+            }
+            if (isset($components['MGFHash'])) {
+                $key = $key->withMGFHash($components['MGFHash']);
+            }
+            if (isset($components['saltLength'])) {
+                $key = $key->withSaltLength($components['saltLength']);
+            }
+        }
+
+        return $key;
+    }
+
+    /**
+     * Initialize static variables
+     */
+    protected static function initialize_static_variables()
+    {
+        if (!isset(self::$configFile)) {
+            self::$configFile = dirname(__FILE__) . '/../openssl.cnf';
+        }
+
+        parent::initialize_static_variables();
+    }
+
+    /**
+     * Constructor
+     *
+     * PublicKey and PrivateKey objects can only be created from abstract RSA class
+     */
+    protected function __construct()
+    {
+        parent::__construct();
+
+        $this->hLen = $this->hash->getLengthInBytes();
+        $this->mgfHash = new Hash('sha256');
+        $this->mgfHLen = $this->mgfHash->getLengthInBytes();
+    }
+
+    /**
+     * Integer-to-Octet-String primitive
+     *
+     * See {@link http://tools.ietf.org/html/rfc3447#section-4.1 RFC3447#section-4.1}.
+     *
+     * @param bool|\phpseclib3\Math\BigInteger $x
+     * @param int $xLen
+     * @return bool|string
+     */
+    protected function i2osp($x, $xLen)
+    {
+        if ($x === false) {
+            return false;
+        }
+        $x = $x->toBytes();
+        if (strlen($x) > $xLen) {
+            throw new \OutOfRangeException('Resultant string length out of range');
+        }
+        return str_pad($x, $xLen, chr(0), STR_PAD_LEFT);
+    }
+
+    /**
+     * Octet-String-to-Integer primitive
+     *
+     * See {@link http://tools.ietf.org/html/rfc3447#section-4.2 RFC3447#section-4.2}.
+     *
+     * @param string $x
+     * @return \phpseclib3\Math\BigInteger
+     */
+    protected function os2ip($x)
+    {
+        return new BigInteger($x, 256);
+    }
+
+    /**
+     * EMSA-PKCS1-V1_5-ENCODE
+     *
+     * See {@link http://tools.ietf.org/html/rfc3447#section-9.2 RFC3447#section-9.2}.
+     *
+     * @param string $m
+     * @param int $emLen
+     * @throws \LengthException if the intended encoded message length is too short
+     * @return string
+     */
+    protected function emsa_pkcs1_v1_5_encode($m, $emLen)
+    {
+        $h = $this->hash->hash($m);
+
+        // see http://tools.ietf.org/html/rfc3447#page-43
+        switch ($this->hash->getHash()) {
+            case 'md2':
+                $t = "\x30\x20\x30\x0c\x06\x08\x2a\x86\x48\x86\xf7\x0d\x02\x02\x05\x00\x04\x10";
+                break;
+            case 'md5':
+                $t = "\x30\x20\x30\x0c\x06\x08\x2a\x86\x48\x86\xf7\x0d\x02\x05\x05\x00\x04\x10";
+                break;
+            case 'sha1':
+                $t = "\x30\x21\x30\x09\x06\x05\x2b\x0e\x03\x02\x1a\x05\x00\x04\x14";
+                break;
+            case 'sha256':
+                $t = "\x30\x31\x30\x0d\x06\x09\x60\x86\x48\x01\x65\x03\x04\x02\x01\x05\x00\x04\x20";
+                break;
+            case 'sha384':
+                $t = "\x30\x41\x30\x0d\x06\x09\x60\x86\x48\x01\x65\x03\x04\x02\x02\x05\x00\x04\x30";
+                break;
+            case 'sha512':
+                $t = "\x30\x51\x30\x0d\x06\x09\x60\x86\x48\x01\x65\x03\x04\x02\x03\x05\x00\x04\x40";
+                break;
+            // from https://www.emc.com/collateral/white-papers/h11300-pkcs-1v2-2-rsa-cryptography-standard-wp.pdf#page=40
+            case 'sha224':
+                $t = "\x30\x2d\x30\x0d\x06\x09\x60\x86\x48\x01\x65\x03\x04\x02\x04\x05\x00\x04\x1c";
+                break;
+            case 'sha512/224':
+                $t = "\x30\x2d\x30\x0d\x06\x09\x60\x86\x48\x01\x65\x03\x04\x02\x05\x05\x00\x04\x1c";
+                break;
+            case 'sha512/256':
+                $t = "\x30\x31\x30\x0d\x06\x09\x60\x86\x48\x01\x65\x03\x04\x02\x06\x05\x00\x04\x20";
+        }
+        $t .= $h;
+        $tLen = strlen($t);
+
+        if ($emLen < $tLen + 11) {
+            throw new \LengthException('Intended encoded message length too short');
+        }
+
+        $ps = str_repeat(chr(0xFF), $emLen - $tLen - 3);
+
+        $em = "\0\1$ps\0$t";
+
+        return $em;
+    }
+
+    /**
+     * EMSA-PKCS1-V1_5-ENCODE (without NULL)
+     *
+     * Quoting https://tools.ietf.org/html/rfc8017#page-65,
+     *
+     * "The parameters field associated with id-sha1, id-sha224, id-sha256,
+     *  id-sha384, id-sha512, id-sha512/224, and id-sha512/256 should
+     *  generally be omitted, but if present, it shall have a value of type
+     *  NULL"
+     *
+     * @param string $m
+     * @param int $emLen
+     * @return string
+     */
+    protected function emsa_pkcs1_v1_5_encode_without_null($m, $emLen)
+    {
+        $h = $this->hash->hash($m);
+
+        // see http://tools.ietf.org/html/rfc3447#page-43
+        switch ($this->hash->getHash()) {
+            case 'sha1':
+                $t = "\x30\x1f\x30\x07\x06\x05\x2b\x0e\x03\x02\x1a\x04\x14";
+                break;
+            case 'sha256':
+                $t = "\x30\x2f\x30\x0b\x06\x09\x60\x86\x48\x01\x65\x03\x04\x02\x01\x04\x20";
+                break;
+            case 'sha384':
+                $t = "\x30\x3f\x30\x0b\x06\x09\x60\x86\x48\x01\x65\x03\x04\x02\x02\x04\x30";
+                break;
+            case 'sha512':
+                $t = "\x30\x4f\x30\x0b\x06\x09\x60\x86\x48\x01\x65\x03\x04\x02\x03\x04\x40";
+                break;
+            // from https://www.emc.com/collateral/white-papers/h11300-pkcs-1v2-2-rsa-cryptography-standard-wp.pdf#page=40
+            case 'sha224':
+                $t = "\x30\x2b\x30\x0b\x06\x09\x60\x86\x48\x01\x65\x03\x04\x02\x04\x04\x1c";
+                break;
+            case 'sha512/224':
+                $t = "\x30\x2b\x30\x0b\x06\x09\x60\x86\x48\x01\x65\x03\x04\x02\x05\x04\x1c";
+                break;
+            case 'sha512/256':
+                $t = "\x30\x2f\x30\x0b\x06\x09\x60\x86\x48\x01\x65\x03\x04\x02\x06\x04\x20";
+                break;
+            default:
+                throw new UnsupportedAlgorithmException('md2 and md5 require NULLs');
+        }
+        $t .= $h;
+        $tLen = strlen($t);
+
+        if ($emLen < $tLen + 11) {
+            throw new \LengthException('Intended encoded message length too short');
+        }
+
+        $ps = str_repeat(chr(0xFF), $emLen - $tLen - 3);
+
+        $em = "\0\1$ps\0$t";
+
+        return $em;
+    }
+
+    /**
+     * MGF1
+     *
+     * See {@link http://tools.ietf.org/html/rfc3447#appendix-B.2.1 RFC3447#appendix-B.2.1}.
+     *
+     * @param string $mgfSeed
+     * @param int $maskLen
+     * @return string
+     */
+    protected function mgf1($mgfSeed, $maskLen)
+    {
+        // if $maskLen would yield strings larger than 4GB, PKCS#1 suggests a "Mask too long" error be output.
+
+        $t = '';
+        $count = ceil($maskLen / $this->mgfHLen);
+        for ($i = 0; $i < $count; $i++) {
+            $c = pack('N', $i);
+            $t .= $this->mgfHash->hash($mgfSeed . $c);
+        }
+
+        return substr($t, 0, $maskLen);
+    }
+
+    /**
+     * Returns the key size
+     *
+     * More specifically, this returns the size of the modulo in bits.
+     *
+     * @return int
+     */
+    public function getLength()
+    {
+        return !isset($this->modulus) ? 0 : $this->modulus->getLength();
+    }
+
+    /**
+     * Determines which hashing function should be used
+     *
+     * Used with signature production / verification and (if the encryption mode is self::PADDING_OAEP) encryption and
+     * decryption.
+     *
+     * @param string $hash
+     */
+    public function withHash($hash)
+    {
+        $new = clone $this;
+
+        // \phpseclib3\Crypt\Hash supports algorithms that PKCS#1 doesn't support.  md5-96 and sha1-96, for example.
+        switch (strtolower($hash)) {
+            case 'md2':
+            case 'md5':
+            case 'sha1':
+            case 'sha256':
+            case 'sha384':
+            case 'sha512':
+            case 'sha224':
+            case 'sha512/224':
+            case 'sha512/256':
+                $new->hash = new Hash($hash);
+                break;
+            default:
+                throw new UnsupportedAlgorithmException(
+                    'The only supported hash algorithms are: md2, md5, sha1, sha256, sha384, sha512, sha224, sha512/224, sha512/256'
+                );
+        }
+        $new->hLen = $new->hash->getLengthInBytes();
+
+        return $new;
+    }
+
+    /**
+     * Determines which hashing function should be used for the mask generation function
+     *
+     * The mask generation function is used by self::PADDING_OAEP and self::PADDING_PSS and although it's
+     * best if Hash and MGFHash are set to the same thing this is not a requirement.
+     *
+     * @param string $hash
+     */
+    public function withMGFHash($hash)
+    {
+        $new = clone $this;
+
+        // \phpseclib3\Crypt\Hash supports algorithms that PKCS#1 doesn't support.  md5-96 and sha1-96, for example.
+        switch (strtolower($hash)) {
+            case 'md2':
+            case 'md5':
+            case 'sha1':
+            case 'sha256':
+            case 'sha384':
+            case 'sha512':
+            case 'sha224':
+            case 'sha512/224':
+            case 'sha512/256':
+                $new->mgfHash = new Hash($hash);
+                break;
+            default:
+                throw new UnsupportedAlgorithmException(
+                    'The only supported hash algorithms are: md2, md5, sha1, sha256, sha384, sha512, sha224, sha512/224, sha512/256'
+                );
+        }
+        $new->mgfHLen = $new->mgfHash->getLengthInBytes();
+
+        return $new;
+    }
+
+    /**
+     * Returns the MGF hash algorithm currently being used
+     *
+     */
+    public function getMGFHash()
+    {
+        return clone $this->mgfHash;
+    }
+
+    /**
+     * Determines the salt length
+     *
+     * Used by RSA::PADDING_PSS
+     *
+     * To quote from {@link http://tools.ietf.org/html/rfc3447#page-38 RFC3447#page-38}:
+     *
+     *    Typical salt lengths in octets are hLen (the length of the output
+     *    of the hash function Hash) and 0.
+     *
+     * @param int $sLen
+     */
+    public function withSaltLength($sLen)
+    {
+        $new = clone $this;
+        $new->sLen = $sLen;
+        return $new;
+    }
+
+    /**
+     * Returns the salt length currently being used
+     *
+     */
+    public function getSaltLength()
+    {
+        return $this->sLen !== null ? $this->sLen : $this->hLen;
+    }
+
+    /**
+     * Determines the label
+     *
+     * Used by RSA::PADDING_OAEP
+     *
+     * To quote from {@link http://tools.ietf.org/html/rfc3447#page-17 RFC3447#page-17}:
+     *
+     *    Both the encryption and the decryption operations of RSAES-OAEP take
+     *    the value of a label L as input.  In this version of PKCS #1, L is
+     *    the empty string; other uses of the label are outside the scope of
+     *    this document.
+     *
+     * @param string $label
+     */
+    public function withLabel($label)
+    {
+        $new = clone $this;
+        $new->label = $label;
+        return $new;
+    }
+
+    /**
+     * Returns the label currently being used
+     *
+     */
+    public function getLabel()
+    {
+        return $this->label;
+    }
+
+    /**
+     * Determines the padding modes
+     *
+     * Example: $key->withPadding(RSA::ENCRYPTION_PKCS1 | RSA::SIGNATURE_PKCS1);
+     *
+     * @param int $padding
+     */
+    public function withPadding($padding)
+    {
+        $masks = [
+            self::ENCRYPTION_OAEP,
+            self::ENCRYPTION_PKCS1,
+            self::ENCRYPTION_NONE
+        ];
+        $encryptedCount = 0;
+        $selected = 0;
+        foreach ($masks as $mask) {
+            if ($padding & $mask) {
+                $selected = $mask;
+                $encryptedCount++;
+            }
+        }
+        if ($encryptedCount > 1) {
+            throw new InconsistentSetupException('Multiple encryption padding modes have been selected; at most only one should be selected');
+        }
+        $encryptionPadding = $selected;
+
+        $masks = [
+            self::SIGNATURE_PSS,
+            self::SIGNATURE_RELAXED_PKCS1,
+            self::SIGNATURE_PKCS1
+        ];
+        $signatureCount = 0;
+        $selected = 0;
+        foreach ($masks as $mask) {
+            if ($padding & $mask) {
+                $selected = $mask;
+                $signatureCount++;
+            }
+        }
+        if ($signatureCount > 1) {
+            throw new InconsistentSetupException('Multiple signature padding modes have been selected; at most only one should be selected');
+        }
+        $signaturePadding = $selected;
+
+        $new = clone $this;
+        if ($encryptedCount) {
+            $new->encryptionPadding = $encryptionPadding;
+        }
+        if ($signatureCount) {
+            $new->signaturePadding = $signaturePadding;
+        }
+        return $new;
+    }
+
+    /**
+     * Returns the padding currently being used
+     *
+     */
+    public function getPadding()
+    {
+        return $this->signaturePadding | $this->encryptionPadding;
+    }
+
+    /**
+     * Returns the current engine being used
+     *
+     * OpenSSL is only used in this class (and it's subclasses) for key generation
+     * Even then it depends on the parameters you're using. It's not used for
+     * multi-prime RSA nor is it used if the key length is outside of the range
+     * supported by OpenSSL
+     *
+     * @see self::useInternalEngine()
+     * @see self::useBestEngine()
+     * @return string
+     */
+    public function getEngine()
+    {
+        if (!isset(self::$engines['PHP'])) {
+            self::useBestEngine();
+        }
+        return self::$engines['OpenSSL'] && self::$defaultExponent == 65537 ?
+            'OpenSSL' :
+            'PHP';
+    }
+
+    /**
+     * Enable RSA Blinding
+     *
+     */
+    public static function enableBlinding()
+    {
+        static::$enableBlinding = true;
+    }
+
+    /**
+     * Disable RSA Blinding
+     *
+     */
+    public static function disableBlinding()
+    {
+        static::$enableBlinding = false;
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/RSA/Formats/Keys/JWK.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/RSA/Formats/Keys/JWK.php
new file mode 100644
index 0000000..87f543d
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/RSA/Formats/Keys/JWK.php
@@ -0,0 +1,142 @@
+<?php
+
+/**
+ * JSON Web Key (RFC7517) Formatted RSA Handler
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\RSA\Formats\Keys;
+
+use phpseclib3\Common\Functions\Strings;
+use phpseclib3\Crypt\Common\Formats\Keys\JWK as Progenitor;
+use phpseclib3\Math\BigInteger;
+
+/**
+ * JWK Formatted RSA Handler
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class JWK extends Progenitor
+{
+    /**
+     * Break a public or private key down into its constituent components
+     *
+     * @param string $key
+     * @param string $password optional
+     * @return array
+     */
+    public static function load($key, $password = '')
+    {
+        $key = parent::load($key, $password);
+
+        if ($key->kty != 'RSA') {
+            throw new \RuntimeException('Only RSA JWK keys are supported');
+        }
+
+        $count = $publicCount = 0;
+        $vars = ['n', 'e', 'd', 'p', 'q', 'dp', 'dq', 'qi'];
+        foreach ($vars as $var) {
+            if (!isset($key->$var) || !is_string($key->$var)) {
+                continue;
+            }
+            $count++;
+            $value = new BigInteger(Strings::base64url_decode($key->$var), 256);
+            switch ($var) {
+                case 'n':
+                    $publicCount++;
+                    $components['modulus'] = $value;
+                    break;
+                case 'e':
+                    $publicCount++;
+                    $components['publicExponent'] = $value;
+                    break;
+                case 'd':
+                    $components['privateExponent'] = $value;
+                    break;
+                case 'p':
+                    $components['primes'][1] = $value;
+                    break;
+                case 'q':
+                    $components['primes'][2] = $value;
+                    break;
+                case 'dp':
+                    $components['exponents'][1] = $value;
+                    break;
+                case 'dq':
+                    $components['exponents'][2] = $value;
+                    break;
+                case 'qi':
+                    $components['coefficients'][2] = $value;
+            }
+        }
+
+        if ($count == count($vars)) {
+            return $components + ['isPublicKey' => false];
+        }
+
+        if ($count == 2 && $publicCount == 2) {
+            return $components + ['isPublicKey' => true];
+        }
+
+        throw new \UnexpectedValueException('Key does not have an appropriate number of RSA parameters');
+    }
+
+    /**
+     * Convert a private key to the appropriate format.
+     *
+     * @param \phpseclib3\Math\BigInteger $n
+     * @param \phpseclib3\Math\BigInteger $e
+     * @param \phpseclib3\Math\BigInteger $d
+     * @param array $primes
+     * @param array $exponents
+     * @param array $coefficients
+     * @param string $password optional
+     * @param array $options optional
+     * @return string
+     */
+    public static function savePrivateKey(BigInteger $n, BigInteger $e, BigInteger $d, array $primes, array $exponents, array $coefficients, $password = '', array $options = [])
+    {
+        if (count($primes) != 2) {
+            throw new \InvalidArgumentException('JWK does not support multi-prime RSA keys');
+        }
+
+        $key = [
+            'kty' => 'RSA',
+            'n' => Strings::base64url_encode($n->toBytes()),
+            'e' => Strings::base64url_encode($e->toBytes()),
+            'd' => Strings::base64url_encode($d->toBytes()),
+            'p' => Strings::base64url_encode($primes[1]->toBytes()),
+            'q' => Strings::base64url_encode($primes[2]->toBytes()),
+            'dp' => Strings::base64url_encode($exponents[1]->toBytes()),
+            'dq' => Strings::base64url_encode($exponents[2]->toBytes()),
+            'qi' => Strings::base64url_encode($coefficients[2]->toBytes())
+        ];
+
+        return self::wrapKey($key, $options);
+    }
+
+    /**
+     * Convert a public key to the appropriate format
+     *
+     * @param \phpseclib3\Math\BigInteger $n
+     * @param \phpseclib3\Math\BigInteger $e
+     * @param array $options optional
+     * @return string
+     */
+    public static function savePublicKey(BigInteger $n, BigInteger $e, array $options = [])
+    {
+        $key = [
+            'kty' => 'RSA',
+            'n' => Strings::base64url_encode($n->toBytes()),
+            'e' => Strings::base64url_encode($e->toBytes())
+        ];
+
+        return self::wrapKey($key, $options);
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/RSA/Formats/Keys/MSBLOB.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/RSA/Formats/Keys/MSBLOB.php
new file mode 100644
index 0000000..e9a0c4f
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/RSA/Formats/Keys/MSBLOB.php
@@ -0,0 +1,228 @@
+<?php
+
+/**
+ * Miccrosoft BLOB Formatted RSA Key Handler
+ *
+ * More info:
+ *
+ * https://msdn.microsoft.com/en-us/library/windows/desktop/aa375601(v=vs.85).aspx
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\RSA\Formats\Keys;
+
+use phpseclib3\Common\Functions\Strings;
+use phpseclib3\Exception\UnsupportedFormatException;
+use phpseclib3\Math\BigInteger;
+
+/**
+ * Microsoft BLOB Formatted RSA Key Handler
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class MSBLOB
+{
+    /**
+     * Public/Private Key Pair
+     *
+     */
+    const PRIVATEKEYBLOB = 0x7;
+    /**
+     * Public Key
+     *
+     */
+    const PUBLICKEYBLOB = 0x6;
+    /**
+     * Public Key
+     *
+     */
+    const PUBLICKEYBLOBEX = 0xA;
+    /**
+     * RSA public key exchange algorithm
+     *
+     */
+    const CALG_RSA_KEYX = 0x0000A400;
+    /**
+     * RSA public key exchange algorithm
+     *
+     */
+    const CALG_RSA_SIGN = 0x00002400;
+    /**
+     * Public Key
+     *
+     */
+    const RSA1 = 0x31415352;
+    /**
+     * Private Key
+     *
+     */
+    const RSA2 = 0x32415352;
+
+    /**
+     * Break a public or private key down into its constituent components
+     *
+     * @param string $key
+     * @param string $password optional
+     * @return array
+     */
+    public static function load($key, $password = '')
+    {
+        if (!Strings::is_stringable($key)) {
+            throw new \UnexpectedValueException('Key should be a string - not a ' . gettype($key));
+        }
+
+        $key = Strings::base64_decode($key);
+
+        if (!is_string($key)) {
+            throw new \UnexpectedValueException('Base64 decoding produced an error');
+        }
+        if (strlen($key) < 20) {
+            throw new \UnexpectedValueException('Key appears to be malformed');
+        }
+
+        // PUBLICKEYSTRUC  publickeystruc
+        // https://msdn.microsoft.com/en-us/library/windows/desktop/aa387453(v=vs.85).aspx
+        extract(unpack('atype/aversion/vreserved/Valgo', Strings::shift($key, 8)));
+        /**
+         * @var string $type
+         * @var string $version
+         * @var integer $reserved
+         * @var integer $algo
+         */
+        switch (ord($type)) {
+            case self::PUBLICKEYBLOB:
+            case self::PUBLICKEYBLOBEX:
+                $publickey = true;
+                break;
+            case self::PRIVATEKEYBLOB:
+                $publickey = false;
+                break;
+            default:
+                throw new \UnexpectedValueException('Key appears to be malformed');
+        }
+
+        $components = ['isPublicKey' => $publickey];
+
+        // https://msdn.microsoft.com/en-us/library/windows/desktop/aa375549(v=vs.85).aspx
+        switch ($algo) {
+            case self::CALG_RSA_KEYX:
+            case self::CALG_RSA_SIGN:
+                break;
+            default:
+                throw new \UnexpectedValueException('Key appears to be malformed');
+        }
+
+        // RSAPUBKEY rsapubkey
+        // https://msdn.microsoft.com/en-us/library/windows/desktop/aa387685(v=vs.85).aspx
+        // could do V for pubexp but that's unsigned 32-bit whereas some PHP installs only do signed 32-bit
+        extract(unpack('Vmagic/Vbitlen/a4pubexp', Strings::shift($key, 12)));
+        /**
+         * @var integer $magic
+         * @var integer $bitlen
+         * @var string $pubexp
+         */
+        switch ($magic) {
+            case self::RSA2:
+                $components['isPublicKey'] = false;
+                // fall-through
+            case self::RSA1:
+                break;
+            default:
+                throw new \UnexpectedValueException('Key appears to be malformed');
+        }
+
+        $baseLength = $bitlen / 16;
+        if (strlen($key) != 2 * $baseLength && strlen($key) != 9 * $baseLength) {
+            throw new \UnexpectedValueException('Key appears to be malformed');
+        }
+
+        $components[$components['isPublicKey'] ? 'publicExponent' : 'privateExponent'] = new BigInteger(strrev($pubexp), 256);
+        // BYTE modulus[rsapubkey.bitlen/8]
+        $components['modulus'] = new BigInteger(strrev(Strings::shift($key, $bitlen / 8)), 256);
+
+        if ($publickey) {
+            return $components;
+        }
+
+        $components['isPublicKey'] = false;
+
+        // BYTE prime1[rsapubkey.bitlen/16]
+        $components['primes'] = [1 => new BigInteger(strrev(Strings::shift($key, $bitlen / 16)), 256)];
+        // BYTE prime2[rsapubkey.bitlen/16]
+        $components['primes'][] = new BigInteger(strrev(Strings::shift($key, $bitlen / 16)), 256);
+        // BYTE exponent1[rsapubkey.bitlen/16]
+        $components['exponents'] = [1 => new BigInteger(strrev(Strings::shift($key, $bitlen / 16)), 256)];
+        // BYTE exponent2[rsapubkey.bitlen/16]
+        $components['exponents'][] = new BigInteger(strrev(Strings::shift($key, $bitlen / 16)), 256);
+        // BYTE coefficient[rsapubkey.bitlen/16]
+        $components['coefficients'] = [2 => new BigInteger(strrev(Strings::shift($key, $bitlen / 16)), 256)];
+        if (isset($components['privateExponent'])) {
+            $components['publicExponent'] = $components['privateExponent'];
+        }
+        // BYTE privateExponent[rsapubkey.bitlen/8]
+        $components['privateExponent'] = new BigInteger(strrev(Strings::shift($key, $bitlen / 8)), 256);
+
+        return $components;
+    }
+
+    /**
+     * Convert a private key to the appropriate format.
+     *
+     * @param \phpseclib3\Math\BigInteger $n
+     * @param \phpseclib3\Math\BigInteger $e
+     * @param \phpseclib3\Math\BigInteger $d
+     * @param array $primes
+     * @param array $exponents
+     * @param array $coefficients
+     * @param string $password optional
+     * @return string
+     */
+    public static function savePrivateKey(BigInteger $n, BigInteger $e, BigInteger $d, array $primes, array $exponents, array $coefficients, $password = '')
+    {
+        if (count($primes) != 2) {
+            throw new \InvalidArgumentException('MSBLOB does not support multi-prime RSA keys');
+        }
+
+        if (!empty($password) && is_string($password)) {
+            throw new UnsupportedFormatException('MSBLOB private keys do not support encryption');
+        }
+
+        $n = strrev($n->toBytes());
+        $e = str_pad(strrev($e->toBytes()), 4, "\0");
+        $key = pack('aavV', chr(self::PRIVATEKEYBLOB), chr(2), 0, self::CALG_RSA_KEYX);
+        $key .= pack('VVa*', self::RSA2, 8 * strlen($n), $e);
+        $key .= $n;
+        $key .= strrev($primes[1]->toBytes());
+        $key .= strrev($primes[2]->toBytes());
+        $key .= strrev($exponents[1]->toBytes());
+        $key .= strrev($exponents[2]->toBytes());
+        $key .= strrev($coefficients[2]->toBytes());
+        $key .= strrev($d->toBytes());
+
+        return Strings::base64_encode($key);
+    }
+
+    /**
+     * Convert a public key to the appropriate format
+     *
+     * @param \phpseclib3\Math\BigInteger $n
+     * @param \phpseclib3\Math\BigInteger $e
+     * @return string
+     */
+    public static function savePublicKey(BigInteger $n, BigInteger $e)
+    {
+        $n = strrev($n->toBytes());
+        $e = str_pad(strrev($e->toBytes()), 4, "\0");
+        $key = pack('aavV', chr(self::PUBLICKEYBLOB), chr(2), 0, self::CALG_RSA_KEYX);
+        $key .= pack('VVa*', self::RSA1, 8 * strlen($n), $e);
+        $key .= $n;
+
+        return Strings::base64_encode($key);
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/RSA/Formats/Keys/OpenSSH.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/RSA/Formats/Keys/OpenSSH.php
new file mode 100644
index 0000000..2367810
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/RSA/Formats/Keys/OpenSSH.php
@@ -0,0 +1,132 @@
+<?php
+
+/**
+ * OpenSSH Formatted RSA Key Handler
+ *
+ * PHP version 5
+ *
+ * Place in $HOME/.ssh/authorized_keys
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\RSA\Formats\Keys;
+
+use phpseclib3\Common\Functions\Strings;
+use phpseclib3\Crypt\Common\Formats\Keys\OpenSSH as Progenitor;
+use phpseclib3\Math\BigInteger;
+
+/**
+ * OpenSSH Formatted RSA Key Handler
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class OpenSSH extends Progenitor
+{
+    /**
+     * Supported Key Types
+     *
+     * @var array
+     */
+    protected static $types = ['ssh-rsa'];
+
+    /**
+     * Break a public or private key down into its constituent components
+     *
+     * @param string $key
+     * @param string $password optional
+     * @return array
+     */
+    public static function load($key, $password = '')
+    {
+        static $one;
+        if (!isset($one)) {
+            $one = new BigInteger(1);
+        }
+
+        $parsed = parent::load($key, $password);
+
+        if (isset($parsed['paddedKey'])) {
+            list($type) = Strings::unpackSSH2('s', $parsed['paddedKey']);
+            if ($type != $parsed['type']) {
+                throw new \RuntimeException("The public and private keys are not of the same type ($type vs $parsed[type])");
+            }
+
+            $primes = $coefficients = [];
+
+            list(
+                $modulus,
+                $publicExponent,
+                $privateExponent,
+                $coefficients[2],
+                $primes[1],
+                $primes[2],
+                $comment,
+            ) = Strings::unpackSSH2('i6s', $parsed['paddedKey']);
+
+            $temp = $primes[1]->subtract($one);
+            $exponents = [1 => $publicExponent->modInverse($temp)];
+            $temp = $primes[2]->subtract($one);
+            $exponents[] = $publicExponent->modInverse($temp);
+
+            $isPublicKey = false;
+
+            return compact('publicExponent', 'modulus', 'privateExponent', 'primes', 'coefficients', 'exponents', 'comment', 'isPublicKey');
+        }
+
+        list($publicExponent, $modulus) = Strings::unpackSSH2('ii', $parsed['publicKey']);
+
+        return [
+            'isPublicKey' => true,
+            'modulus' => $modulus,
+            'publicExponent' => $publicExponent,
+            'comment' => $parsed['comment']
+        ];
+    }
+
+    /**
+     * Convert a public key to the appropriate format
+     *
+     * @param \phpseclib3\Math\BigInteger $n
+     * @param \phpseclib3\Math\BigInteger $e
+     * @param array $options optional
+     * @return string
+     */
+    public static function savePublicKey(BigInteger $n, BigInteger $e, array $options = [])
+    {
+        $RSAPublicKey = Strings::packSSH2('sii', 'ssh-rsa', $e, $n);
+
+        if (isset($options['binary']) ? $options['binary'] : self::$binary) {
+            return $RSAPublicKey;
+        }
+
+        $comment = isset($options['comment']) ? $options['comment'] : self::$comment;
+        $RSAPublicKey = 'ssh-rsa ' . base64_encode($RSAPublicKey) . ' ' . $comment;
+
+        return $RSAPublicKey;
+    }
+
+    /**
+     * Convert a private key to the appropriate format.
+     *
+     * @param \phpseclib3\Math\BigInteger $n
+     * @param \phpseclib3\Math\BigInteger $e
+     * @param \phpseclib3\Math\BigInteger $d
+     * @param array $primes
+     * @param array $exponents
+     * @param array $coefficients
+     * @param string $password optional
+     * @param array $options optional
+     * @return string
+     */
+    public static function savePrivateKey(BigInteger $n, BigInteger $e, BigInteger $d, array $primes, array $exponents, array $coefficients, $password = '', array $options = [])
+    {
+        $publicKey = self::savePublicKey($n, $e, ['binary' => true]);
+        $privateKey = Strings::packSSH2('si6', 'ssh-rsa', $n, $e, $d, $coefficients[2], $primes[1], $primes[2]);
+
+        return self::wrapPrivateKey($publicKey, $privateKey, $password, $options);
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/RSA/Formats/Keys/PKCS1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/RSA/Formats/Keys/PKCS1.php
new file mode 100644
index 0000000..276c602
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/RSA/Formats/Keys/PKCS1.php
@@ -0,0 +1,160 @@
+<?php
+
+/**
+ * PKCS#1 Formatted RSA Key Handler
+ *
+ * PHP version 5
+ *
+ * Used by File/X509.php
+ *
+ * Processes keys with the following headers:
+ *
+ * -----BEGIN RSA PRIVATE KEY-----
+ * -----BEGIN RSA PUBLIC KEY-----
+ *
+ * Analogous to ssh-keygen's pem format (as specified by -m)
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\RSA\Formats\Keys;
+
+use phpseclib3\Common\Functions\Strings;
+use phpseclib3\Crypt\Common\Formats\Keys\PKCS1 as Progenitor;
+use phpseclib3\File\ASN1;
+use phpseclib3\File\ASN1\Maps;
+use phpseclib3\Math\BigInteger;
+
+/**
+ * PKCS#1 Formatted RSA Key Handler
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class PKCS1 extends Progenitor
+{
+    /**
+     * Break a public or private key down into its constituent components
+     *
+     * @param string $key
+     * @param string $password optional
+     * @return array
+     */
+    public static function load($key, $password = '')
+    {
+        if (!Strings::is_stringable($key)) {
+            throw new \UnexpectedValueException('Key should be a string - not a ' . gettype($key));
+        }
+
+        if (strpos($key, 'PUBLIC') !== false) {
+            $components = ['isPublicKey' => true];
+        } elseif (strpos($key, 'PRIVATE') !== false) {
+            $components = ['isPublicKey' => false];
+        } else {
+            $components = [];
+        }
+
+        $key = parent::load($key, $password);
+
+        $decoded = ASN1::decodeBER($key);
+        if (!$decoded) {
+            throw new \RuntimeException('Unable to decode BER');
+        }
+
+        $key = ASN1::asn1map($decoded[0], Maps\RSAPrivateKey::MAP);
+        if (is_array($key)) {
+            $components += [
+                'modulus' => $key['modulus'],
+                'publicExponent' => $key['publicExponent'],
+                'privateExponent' => $key['privateExponent'],
+                'primes' => [1 => $key['prime1'], $key['prime2']],
+                'exponents' => [1 => $key['exponent1'], $key['exponent2']],
+                'coefficients' => [2 => $key['coefficient']]
+            ];
+            if ($key['version'] == 'multi') {
+                foreach ($key['otherPrimeInfos'] as $primeInfo) {
+                    $components['primes'][] = $primeInfo['prime'];
+                    $components['exponents'][] = $primeInfo['exponent'];
+                    $components['coefficients'][] = $primeInfo['coefficient'];
+                }
+            }
+            if (!isset($components['isPublicKey'])) {
+                $components['isPublicKey'] = false;
+            }
+            return $components;
+        }
+
+        $key = ASN1::asn1map($decoded[0], Maps\RSAPublicKey::MAP);
+
+        if (!is_array($key)) {
+            throw new \RuntimeException('Unable to perform ASN1 mapping');
+        }
+
+        if (!isset($components['isPublicKey'])) {
+            $components['isPublicKey'] = true;
+        }
+
+        return $components + $key;
+    }
+
+    /**
+     * Convert a private key to the appropriate format.
+     *
+     * @param \phpseclib3\Math\BigInteger $n
+     * @param \phpseclib3\Math\BigInteger $e
+     * @param \phpseclib3\Math\BigInteger $d
+     * @param array $primes
+     * @param array $exponents
+     * @param array $coefficients
+     * @param string $password optional
+     * @param array $options optional
+     * @return string
+     */
+    public static function savePrivateKey(BigInteger $n, BigInteger $e, BigInteger $d, array $primes, array $exponents, array $coefficients, $password = '', array $options = [])
+    {
+        $num_primes = count($primes);
+        $key = [
+            'version' => $num_primes == 2 ? 'two-prime' : 'multi',
+            'modulus' => $n,
+            'publicExponent' => $e,
+            'privateExponent' => $d,
+            'prime1' => $primes[1],
+            'prime2' => $primes[2],
+            'exponent1' => $exponents[1],
+            'exponent2' => $exponents[2],
+            'coefficient' => $coefficients[2]
+        ];
+        for ($i = 3; $i <= $num_primes; $i++) {
+            $key['otherPrimeInfos'][] = [
+                'prime' => $primes[$i],
+                'exponent' => $exponents[$i],
+                'coefficient' => $coefficients[$i]
+            ];
+        }
+
+        $key = ASN1::encodeDER($key, Maps\RSAPrivateKey::MAP);
+
+        return self::wrapPrivateKey($key, 'RSA', $password, $options);
+    }
+
+    /**
+     * Convert a public key to the appropriate format
+     *
+     * @param \phpseclib3\Math\BigInteger $n
+     * @param \phpseclib3\Math\BigInteger $e
+     * @return string
+     */
+    public static function savePublicKey(BigInteger $n, BigInteger $e)
+    {
+        $key = [
+            'modulus' => $n,
+            'publicExponent' => $e
+        ];
+
+        $key = ASN1::encodeDER($key, Maps\RSAPublicKey::MAP);
+
+        return self::wrapPublicKey($key, 'RSA');
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/RSA/Formats/Keys/PKCS8.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/RSA/Formats/Keys/PKCS8.php
new file mode 100644
index 0000000..1eaac6e
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/RSA/Formats/Keys/PKCS8.php
@@ -0,0 +1,122 @@
+<?php
+
+/**
+ * PKCS#8 Formatted RSA Key Handler
+ *
+ * PHP version 5
+ *
+ * Used by PHP's openssl_public_encrypt() and openssl's rsautl (when -pubin is set)
+ *
+ * Processes keys with the following headers:
+ *
+ * -----BEGIN ENCRYPTED PRIVATE KEY-----
+ * -----BEGIN PRIVATE KEY-----
+ * -----BEGIN PUBLIC KEY-----
+ *
+ * Analogous to ssh-keygen's pkcs8 format (as specified by -m). Although PKCS8
+ * is specific to private keys it's basically creating a DER-encoded wrapper
+ * for keys. This just extends that same concept to public keys (much like ssh-keygen)
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\RSA\Formats\Keys;
+
+use phpseclib3\Crypt\Common\Formats\Keys\PKCS8 as Progenitor;
+use phpseclib3\File\ASN1;
+use phpseclib3\Math\BigInteger;
+
+/**
+ * PKCS#8 Formatted RSA Key Handler
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class PKCS8 extends Progenitor
+{
+    /**
+     * OID Name
+     *
+     * @var string
+     */
+    const OID_NAME = 'rsaEncryption';
+
+    /**
+     * OID Value
+     *
+     * @var string
+     */
+    const OID_VALUE = '1.2.840.113549.1.1.1';
+
+    /**
+     * Child OIDs loaded
+     *
+     * @var bool
+     */
+    protected static $childOIDsLoaded = false;
+
+    /**
+     * Break a public or private key down into its constituent components
+     *
+     * @param string $key
+     * @param string $password optional
+     * @return array
+     */
+    public static function load($key, $password = '')
+    {
+        $key = parent::load($key, $password);
+
+        if (isset($key['privateKey'])) {
+            $components['isPublicKey'] = false;
+            $type = 'private';
+        } else {
+            $components['isPublicKey'] = true;
+            $type = 'public';
+        }
+
+        $result = $components + PKCS1::load($key[$type . 'Key']);
+
+        if (isset($key['meta'])) {
+            $result['meta'] = $key['meta'];
+        }
+
+        return $result;
+    }
+
+    /**
+     * Convert a private key to the appropriate format.
+     *
+     * @param \phpseclib3\Math\BigInteger $n
+     * @param \phpseclib3\Math\BigInteger $e
+     * @param \phpseclib3\Math\BigInteger $d
+     * @param array $primes
+     * @param array $exponents
+     * @param array $coefficients
+     * @param string $password optional
+     * @param array $options optional
+     * @return string
+     */
+    public static function savePrivateKey(BigInteger $n, BigInteger $e, BigInteger $d, array $primes, array $exponents, array $coefficients, $password = '', array $options = [])
+    {
+        $key = PKCS1::savePrivateKey($n, $e, $d, $primes, $exponents, $coefficients);
+        $key = ASN1::extractBER($key);
+        return self::wrapPrivateKey($key, [], null, $password, null, '', $options);
+    }
+
+    /**
+     * Convert a public key to the appropriate format
+     *
+     * @param \phpseclib3\Math\BigInteger $n
+     * @param \phpseclib3\Math\BigInteger $e
+     * @param array $options optional
+     * @return string
+     */
+    public static function savePublicKey(BigInteger $n, BigInteger $e, array $options = [])
+    {
+        $key = PKCS1::savePublicKey($n, $e);
+        $key = ASN1::extractBER($key);
+        return self::wrapPublicKey($key, null);
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/RSA/Formats/Keys/PSS.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/RSA/Formats/Keys/PSS.php
new file mode 100644
index 0000000..ed75b9b
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/RSA/Formats/Keys/PSS.php
@@ -0,0 +1,238 @@
+<?php
+
+/**
+ * PKCS#8 Formatted RSA-PSS Key Handler
+ *
+ * PHP version 5
+ *
+ * Used by PHP's openssl_public_encrypt() and openssl's rsautl (when -pubin is set)
+ *
+ * Processes keys with the following headers:
+ *
+ * -----BEGIN ENCRYPTED PRIVATE KEY-----
+ * -----BEGIN PRIVATE KEY-----
+ * -----BEGIN PUBLIC KEY-----
+ *
+ * Analogous to "openssl genpkey -algorithm rsa-pss".
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\RSA\Formats\Keys;
+
+use phpseclib3\Common\Functions\Strings;
+use phpseclib3\Crypt\Common\Formats\Keys\PKCS8 as Progenitor;
+use phpseclib3\File\ASN1;
+use phpseclib3\File\ASN1\Maps;
+use phpseclib3\Math\BigInteger;
+
+/**
+ * PKCS#8 Formatted RSA-PSS Key Handler
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class PSS extends Progenitor
+{
+    /**
+     * OID Name
+     *
+     * @var string
+     */
+    const OID_NAME = 'id-RSASSA-PSS';
+
+    /**
+     * OID Value
+     *
+     * @var string
+     */
+    const OID_VALUE = '1.2.840.113549.1.1.10';
+
+    /**
+     * OIDs loaded
+     *
+     * @var bool
+     */
+    private static $oidsLoaded = false;
+
+    /**
+     * Child OIDs loaded
+     *
+     * @var bool
+     */
+    protected static $childOIDsLoaded = false;
+
+    /**
+     * Initialize static variables
+     */
+    private static function initialize_static_variables()
+    {
+        if (!self::$oidsLoaded) {
+            ASN1::loadOIDs([
+                'md2' => '1.2.840.113549.2.2',
+                'md4' => '1.2.840.113549.2.4',
+                'md5' => '1.2.840.113549.2.5',
+                'id-sha1' => '1.3.14.3.2.26',
+                'id-sha256' => '2.16.840.1.101.3.4.2.1',
+                'id-sha384' => '2.16.840.1.101.3.4.2.2',
+                'id-sha512' => '2.16.840.1.101.3.4.2.3',
+                'id-sha224' => '2.16.840.1.101.3.4.2.4',
+                'id-sha512/224' => '2.16.840.1.101.3.4.2.5',
+                'id-sha512/256' => '2.16.840.1.101.3.4.2.6',
+
+                'id-mgf1' => '1.2.840.113549.1.1.8'
+            ]);
+            self::$oidsLoaded = true;
+        }
+    }
+
+    /**
+     * Break a public or private key down into its constituent components
+     *
+     * @param string $key
+     * @param string $password optional
+     * @return array
+     */
+    public static function load($key, $password = '')
+    {
+        self::initialize_static_variables();
+
+        if (!Strings::is_stringable($key)) {
+            throw new \UnexpectedValueException('Key should be a string - not a ' . gettype($key));
+        }
+
+        $components = ['isPublicKey' => strpos($key, 'PUBLIC') !== false];
+
+        $key = parent::load($key, $password);
+
+        $type = isset($key['privateKey']) ? 'private' : 'public';
+
+        $result = $components + PKCS1::load($key[$type . 'Key']);
+
+        if (isset($key[$type . 'KeyAlgorithm']['parameters'])) {
+            $decoded = ASN1::decodeBER($key[$type . 'KeyAlgorithm']['parameters']);
+            if ($decoded === false) {
+                throw new \UnexpectedValueException('Unable to decode parameters');
+            }
+            $params = ASN1::asn1map($decoded[0], Maps\RSASSA_PSS_params::MAP);
+        } else {
+            $params = [];
+        }
+
+        if (isset($params['maskGenAlgorithm']['parameters'])) {
+            $decoded = ASN1::decodeBER($params['maskGenAlgorithm']['parameters']);
+            if ($decoded === false) {
+                throw new \UnexpectedValueException('Unable to decode parameters');
+            }
+            $params['maskGenAlgorithm']['parameters'] = ASN1::asn1map($decoded[0], Maps\HashAlgorithm::MAP);
+        } else {
+            $params['maskGenAlgorithm'] = [
+                'algorithm' => 'id-mgf1',
+                'parameters' => ['algorithm' => 'id-sha1']
+            ];
+        }
+
+        if (!isset($params['hashAlgorithm']['algorithm'])) {
+            $params['hashAlgorithm']['algorithm'] = 'id-sha1';
+        }
+
+        $result['hash'] = str_replace('id-', '', $params['hashAlgorithm']['algorithm']);
+        $result['MGFHash'] = str_replace('id-', '', $params['maskGenAlgorithm']['parameters']['algorithm']);
+        if (isset($params['saltLength'])) {
+            $result['saltLength'] = (int) $params['saltLength']->toString();
+        }
+
+        if (isset($key['meta'])) {
+            $result['meta'] = $key['meta'];
+        }
+
+        return $result;
+    }
+
+    /**
+     * Convert a private key to the appropriate format.
+     *
+     * @param \phpseclib3\Math\BigInteger $n
+     * @param \phpseclib3\Math\BigInteger $e
+     * @param \phpseclib3\Math\BigInteger $d
+     * @param array $primes
+     * @param array $exponents
+     * @param array $coefficients
+     * @param string $password optional
+     * @param array $options optional
+     * @return string
+     */
+    public static function savePrivateKey(BigInteger $n, BigInteger $e, BigInteger $d, array $primes, array $exponents, array $coefficients, $password = '', array $options = [])
+    {
+        self::initialize_static_variables();
+
+        $key = PKCS1::savePrivateKey($n, $e, $d, $primes, $exponents, $coefficients);
+        $key = ASN1::extractBER($key);
+        $params = self::savePSSParams($options);
+        return self::wrapPrivateKey($key, [], $params, $password, null, '', $options);
+    }
+
+    /**
+     * Convert a public key to the appropriate format
+     *
+     * @param \phpseclib3\Math\BigInteger $n
+     * @param \phpseclib3\Math\BigInteger $e
+     * @param array $options optional
+     * @return string
+     */
+    public static function savePublicKey(BigInteger $n, BigInteger $e, array $options = [])
+    {
+        self::initialize_static_variables();
+
+        $key = PKCS1::savePublicKey($n, $e);
+        $key = ASN1::extractBER($key);
+        $params = self::savePSSParams($options);
+        return self::wrapPublicKey($key, $params);
+    }
+
+    /**
+     * Encodes PSS parameters
+     *
+     * @param array $options
+     * @return string
+     */
+    public static function savePSSParams(array $options)
+    {
+        /*
+         The trailerField field is an integer.  It provides
+         compatibility with IEEE Std 1363a-2004 [P1363A].  The value
+         MUST be 1, which represents the trailer field with hexadecimal
+         value 0xBC.  Other trailer fields, including the trailer field
+         composed of HashID concatenated with 0xCC that is specified in
+         IEEE Std 1363a, are not supported.  Implementations that
+         perform signature generation MUST omit the trailerField field,
+         indicating that the default trailer field value was used.
+         Implementations that perform signature validation MUST
+         recognize both a present trailerField field with value 1 and an
+         absent trailerField field.
+
+         source: https://tools.ietf.org/html/rfc4055#page-9
+        */
+        $params = [
+            'trailerField' => new BigInteger(1)
+        ];
+        if (isset($options['hash'])) {
+            $params['hashAlgorithm']['algorithm'] = 'id-' . $options['hash'];
+        }
+        if (isset($options['MGFHash'])) {
+            $temp = ['algorithm' => 'id-' . $options['MGFHash']];
+            $temp = ASN1::encodeDER($temp, Maps\HashAlgorithm::MAP);
+            $params['maskGenAlgorithm'] = [
+                'algorithm' => 'id-mgf1',
+                'parameters' => new ASN1\Element($temp)
+            ];
+        }
+        if (isset($options['saltLength'])) {
+            $params['saltLength'] = new BigInteger($options['saltLength']);
+        }
+
+        return new ASN1\Element(ASN1::encodeDER($params, Maps\RSASSA_PSS_params::MAP));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/RSA/Formats/Keys/PuTTY.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/RSA/Formats/Keys/PuTTY.php
new file mode 100644
index 0000000..fe35717
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/RSA/Formats/Keys/PuTTY.php
@@ -0,0 +1,121 @@
+<?php
+
+/**
+ * PuTTY Formatted RSA Key Handler
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\RSA\Formats\Keys;
+
+use phpseclib3\Common\Functions\Strings;
+use phpseclib3\Crypt\Common\Formats\Keys\PuTTY as Progenitor;
+use phpseclib3\Math\BigInteger;
+
+/**
+ * PuTTY Formatted RSA Key Handler
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class PuTTY extends Progenitor
+{
+    /**
+     * Public Handler
+     *
+     * @var string
+     */
+    const PUBLIC_HANDLER = 'phpseclib3\Crypt\RSA\Formats\Keys\OpenSSH';
+
+    /**
+     * Algorithm Identifier
+     *
+     * @var array
+     */
+    protected static $types = ['ssh-rsa'];
+
+    /**
+     * Break a public or private key down into its constituent components
+     *
+     * @param string $key
+     * @param string $password optional
+     * @return array
+     */
+    public static function load($key, $password = '')
+    {
+        static $one;
+        if (!isset($one)) {
+            $one = new BigInteger(1);
+        }
+
+        $components = parent::load($key, $password);
+        if (!isset($components['private'])) {
+            return $components;
+        }
+        extract($components);
+        unset($components['public'], $components['private']);
+
+        $isPublicKey = false;
+
+        $result = Strings::unpackSSH2('ii', $public);
+        if ($result === false) {
+            throw new \UnexpectedValueException('Key appears to be malformed');
+        }
+        list($publicExponent, $modulus) = $result;
+
+        $result = Strings::unpackSSH2('iiii', $private);
+        if ($result === false) {
+            throw new \UnexpectedValueException('Key appears to be malformed');
+        }
+        $primes = $coefficients = [];
+        list($privateExponent, $primes[1], $primes[2], $coefficients[2]) = $result;
+
+        $temp = $primes[1]->subtract($one);
+        $exponents = [1 => $publicExponent->modInverse($temp)];
+        $temp = $primes[2]->subtract($one);
+        $exponents[] = $publicExponent->modInverse($temp);
+
+        return compact('publicExponent', 'modulus', 'privateExponent', 'primes', 'coefficients', 'exponents', 'comment', 'isPublicKey');
+    }
+
+    /**
+     * Convert a private key to the appropriate format.
+     *
+     * @param \phpseclib3\Math\BigInteger $n
+     * @param \phpseclib3\Math\BigInteger $e
+     * @param \phpseclib3\Math\BigInteger $d
+     * @param array $primes
+     * @param array $exponents
+     * @param array $coefficients
+     * @param string $password optional
+     * @param array $options optional
+     * @return string
+     */
+    public static function savePrivateKey(BigInteger $n, BigInteger $e, BigInteger $d, array $primes, array $exponents, array $coefficients, $password = '', array $options = [])
+    {
+        if (count($primes) != 2) {
+            throw new \InvalidArgumentException('PuTTY does not support multi-prime RSA keys');
+        }
+
+        $public =  Strings::packSSH2('ii', $e, $n);
+        $private = Strings::packSSH2('iiii', $d, $primes[1], $primes[2], $coefficients[2]);
+
+        return self::wrapPrivateKey($public, $private, 'ssh-rsa', $password, $options);
+    }
+
+    /**
+     * Convert a public key to the appropriate format
+     *
+     * @param \phpseclib3\Math\BigInteger $n
+     * @param \phpseclib3\Math\BigInteger $e
+     * @return string
+     */
+    public static function savePublicKey(BigInteger $n, BigInteger $e)
+    {
+        return self::wrapPublicKey(Strings::packSSH2('ii', $e, $n), 'ssh-rsa');
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/RSA/Formats/Keys/Raw.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/RSA/Formats/Keys/Raw.php
new file mode 100644
index 0000000..db72878
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/RSA/Formats/Keys/Raw.php
@@ -0,0 +1,184 @@
+<?php
+
+/**
+ * Raw RSA Key Handler
+ *
+ * PHP version 5
+ *
+ * An array containing two \phpseclib3\Math\BigInteger objects.
+ *
+ * The exponent can be indexed with any of the following:
+ *
+ * 0, e, exponent, publicExponent
+ *
+ * The modulus can be indexed with any of the following:
+ *
+ * 1, n, modulo, modulus
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\RSA\Formats\Keys;
+
+use phpseclib3\Math\BigInteger;
+
+/**
+ * Raw RSA Key Handler
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class Raw
+{
+    /**
+     * Break a public or private key down into its constituent components
+     *
+     * @param string $key
+     * @param string $password optional
+     * @return array
+     */
+    public static function load($key, $password = '')
+    {
+        if (!is_array($key)) {
+            throw new \UnexpectedValueException('Key should be a array - not a ' . gettype($key));
+        }
+
+        $key = array_change_key_case($key, CASE_LOWER);
+
+        $components = ['isPublicKey' => false];
+
+        foreach (['e', 'exponent', 'publicexponent', 0, 'privateexponent', 'd'] as $index) {
+            if (isset($key[$index])) {
+                $components['publicExponent'] = $key[$index];
+                break;
+            }
+        }
+
+        foreach (['n', 'modulo', 'modulus', 1] as $index) {
+            if (isset($key[$index])) {
+                $components['modulus'] = $key[$index];
+                break;
+            }
+        }
+
+        if (!isset($components['publicExponent']) || !isset($components['modulus'])) {
+            throw new \UnexpectedValueException('Modulus / exponent not present');
+        }
+
+        if (isset($key['primes'])) {
+            $components['primes'] = $key['primes'];
+        } elseif (isset($key['p']) && isset($key['q'])) {
+            $indices = [
+                ['p', 'q'],
+                ['prime1', 'prime2']
+            ];
+            foreach ($indices as $index) {
+                list($i0, $i1) = $index;
+                if (isset($key[$i0]) && isset($key[$i1])) {
+                    $components['primes'] = [1 => $key[$i0], $key[$i1]];
+                }
+            }
+        }
+
+        if (isset($key['exponents'])) {
+            $components['exponents'] = $key['exponents'];
+        } else {
+            $indices = [
+                ['dp', 'dq'],
+                ['exponent1', 'exponent2']
+            ];
+            foreach ($indices as $index) {
+                list($i0, $i1) = $index;
+                if (isset($key[$i0]) && isset($key[$i1])) {
+                    $components['exponents'] = [1 => $key[$i0], $key[$i1]];
+                }
+            }
+        }
+
+        if (isset($key['coefficients'])) {
+            $components['coefficients'] = $key['coefficients'];
+        } else {
+            foreach (['inverseq', 'q\'', 'coefficient'] as $index) {
+                if (isset($key[$index])) {
+                    $components['coefficients'] = [2 => $key[$index]];
+                }
+            }
+        }
+
+        if (!isset($components['primes'])) {
+            $components['isPublicKey'] = true;
+            return $components;
+        }
+
+        if (!isset($components['exponents'])) {
+            $one = new BigInteger(1);
+            $temp = $components['primes'][1]->subtract($one);
+            $exponents = [1 => $components['publicExponent']->modInverse($temp)];
+            $temp = $components['primes'][2]->subtract($one);
+            $exponents[] = $components['publicExponent']->modInverse($temp);
+            $components['exponents'] = $exponents;
+        }
+
+        if (!isset($components['coefficients'])) {
+            $components['coefficients'] = [2 => $components['primes'][2]->modInverse($components['primes'][1])];
+        }
+
+        foreach (['privateexponent', 'd'] as $index) {
+            if (isset($key[$index])) {
+                $components['privateExponent'] = $key[$index];
+                break;
+            }
+        }
+
+        return $components;
+    }
+
+    /**
+     * Convert a private key to the appropriate format.
+     *
+     * @param \phpseclib3\Math\BigInteger $n
+     * @param \phpseclib3\Math\BigInteger $e
+     * @param \phpseclib3\Math\BigInteger $d
+     * @param array $primes
+     * @param array $exponents
+     * @param array $coefficients
+     * @param string $password optional
+     * @param array $options optional
+     * @return array
+     */
+    public static function savePrivateKey(BigInteger $n, BigInteger $e, BigInteger $d, array $primes, array $exponents, array $coefficients, $password = '', array $options = [])
+    {
+        if (!empty($password) && is_string($password)) {
+            throw new UnsupportedFormatException('Raw private keys do not support encryption');
+        }
+
+        return [
+            'e' => clone $e,
+            'n' => clone $n,
+            'd' => clone $d,
+            'primes' => array_map(function ($var) {
+                return clone $var;
+            }, $primes),
+            'exponents' => array_map(function ($var) {
+                return clone $var;
+            }, $exponents),
+            'coefficients' => array_map(function ($var) {
+                return clone $var;
+            }, $coefficients)
+        ];
+    }
+
+    /**
+     * Convert a public key to the appropriate format
+     *
+     * @param \phpseclib3\Math\BigInteger $n
+     * @param \phpseclib3\Math\BigInteger $e
+     * @return array
+     */
+    public static function savePublicKey(BigInteger $n, BigInteger $e)
+    {
+        return ['e' => clone $e, 'n' => clone $n];
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/RSA/Formats/Keys/XML.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/RSA/Formats/Keys/XML.php
new file mode 100644
index 0000000..280048c
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/RSA/Formats/Keys/XML.php
@@ -0,0 +1,171 @@
+<?php
+
+/**
+ * XML Formatted RSA Key Handler
+ *
+ * More info:
+ *
+ * http://www.w3.org/TR/xmldsig-core/#sec-RSAKeyValue
+ * http://www.w3.org/TR/xkms2/#XKMS_2_0_Paragraph_269
+ * http://en.wikipedia.org/wiki/XML_Signature
+ * http://en.wikipedia.org/wiki/XKMS
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\RSA\Formats\Keys;
+
+use phpseclib3\Common\Functions\Strings;
+use phpseclib3\Exception\BadConfigurationException;
+use phpseclib3\Exception\UnsupportedFormatException;
+use phpseclib3\Math\BigInteger;
+
+/**
+ * XML Formatted RSA Key Handler
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class XML
+{
+    /**
+     * Break a public or private key down into its constituent components
+     *
+     * @param string $key
+     * @param string $password optional
+     * @return array
+     */
+    public static function load($key, $password = '')
+    {
+        if (!Strings::is_stringable($key)) {
+            throw new \UnexpectedValueException('Key should be a string - not a ' . gettype($key));
+        }
+
+        if (!class_exists('DOMDocument')) {
+            throw new BadConfigurationException('The dom extension is not setup correctly on this system');
+        }
+
+        $components = [
+            'isPublicKey' => false,
+            'primes' => [],
+            'exponents' => [],
+            'coefficients' => []
+        ];
+
+        $use_errors = libxml_use_internal_errors(true);
+
+        $dom = new \DOMDocument();
+        if (substr($key, 0, 5) != '<?xml') {
+            $key = '<xml>' . $key . '</xml>';
+        }
+        if (!$dom->loadXML($key)) {
+            libxml_use_internal_errors($use_errors);
+            throw new \UnexpectedValueException('Key does not appear to contain XML');
+        }
+        $xpath = new \DOMXPath($dom);
+        $keys = ['modulus', 'exponent', 'p', 'q', 'dp', 'dq', 'inverseq', 'd'];
+        foreach ($keys as $key) {
+            // $dom->getElementsByTagName($key) is case-sensitive
+            $temp = $xpath->query("//*[translate(local-name(), 'ABCDEFGHIJKLMNOPQRSTUVWXYZ','abcdefghijklmnopqrstuvwxyz')='$key']");
+            if (!$temp->length) {
+                continue;
+            }
+            $value = new BigInteger(Strings::base64_decode($temp->item(0)->nodeValue), 256);
+            switch ($key) {
+                case 'modulus':
+                    $components['modulus'] = $value;
+                    break;
+                case 'exponent':
+                    $components['publicExponent'] = $value;
+                    break;
+                case 'p':
+                    $components['primes'][1] = $value;
+                    break;
+                case 'q':
+                    $components['primes'][2] = $value;
+                    break;
+                case 'dp':
+                    $components['exponents'][1] = $value;
+                    break;
+                case 'dq':
+                    $components['exponents'][2] = $value;
+                    break;
+                case 'inverseq':
+                    $components['coefficients'][2] = $value;
+                    break;
+                case 'd':
+                    $components['privateExponent'] = $value;
+            }
+        }
+
+        libxml_use_internal_errors($use_errors);
+
+        foreach ($components as $key => $value) {
+            if (is_array($value) && !count($value)) {
+                unset($components[$key]);
+            }
+        }
+
+        if (isset($components['modulus']) && isset($components['publicExponent'])) {
+            if (count($components) == 3) {
+                $components['isPublicKey'] = true;
+            }
+            return $components;
+        }
+
+        throw new \UnexpectedValueException('Modulus / exponent not present');
+    }
+
+    /**
+     * Convert a private key to the appropriate format.
+     *
+     * @param \phpseclib3\Math\BigInteger $n
+     * @param \phpseclib3\Math\BigInteger $e
+     * @param \phpseclib3\Math\BigInteger $d
+     * @param array $primes
+     * @param array $exponents
+     * @param array $coefficients
+     * @param string $password optional
+     * @return string
+     */
+    public static function savePrivateKey(BigInteger $n, BigInteger $e, BigInteger $d, array $primes, array $exponents, array $coefficients, $password = '')
+    {
+        if (count($primes) != 2) {
+            throw new \InvalidArgumentException('XML does not support multi-prime RSA keys');
+        }
+
+        if (!empty($password) && is_string($password)) {
+            throw new UnsupportedFormatException('XML private keys do not support encryption');
+        }
+
+        return "<RSAKeyPair>\r\n" .
+               '  <Modulus>' . Strings::base64_encode($n->toBytes()) . "</Modulus>\r\n" .
+               '  <Exponent>' . Strings::base64_encode($e->toBytes()) . "</Exponent>\r\n" .
+               '  <P>' . Strings::base64_encode($primes[1]->toBytes()) . "</P>\r\n" .
+               '  <Q>' . Strings::base64_encode($primes[2]->toBytes()) . "</Q>\r\n" .
+               '  <DP>' . Strings::base64_encode($exponents[1]->toBytes()) . "</DP>\r\n" .
+               '  <DQ>' . Strings::base64_encode($exponents[2]->toBytes()) . "</DQ>\r\n" .
+               '  <InverseQ>' . Strings::base64_encode($coefficients[2]->toBytes()) . "</InverseQ>\r\n" .
+               '  <D>' . Strings::base64_encode($d->toBytes()) . "</D>\r\n" .
+               '</RSAKeyPair>';
+    }
+
+    /**
+     * Convert a public key to the appropriate format
+     *
+     * @param \phpseclib3\Math\BigInteger $n
+     * @param \phpseclib3\Math\BigInteger $e
+     * @return string
+     */
+    public static function savePublicKey(BigInteger $n, BigInteger $e)
+    {
+        return "<RSAKeyValue>\r\n" .
+               '  <Modulus>' . Strings::base64_encode($n->toBytes()) . "</Modulus>\r\n" .
+               '  <Exponent>' . Strings::base64_encode($e->toBytes()) . "</Exponent>\r\n" .
+               '</RSAKeyValue>';
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/RSA/PrivateKey.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/RSA/PrivateKey.php
new file mode 100644
index 0000000..37dd09a
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/RSA/PrivateKey.php
@@ -0,0 +1,530 @@
+<?php
+
+/**
+ * RSA Private Key
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\RSA;
+
+use phpseclib3\Crypt\Common;
+use phpseclib3\Crypt\Random;
+use phpseclib3\Crypt\RSA;
+use phpseclib3\Crypt\RSA\Formats\Keys\PSS;
+use phpseclib3\Exception\UnsupportedFormatException;
+use phpseclib3\Math\BigInteger;
+
+/**
+ * Raw RSA Key Handler
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+final class PrivateKey extends RSA implements Common\PrivateKey
+{
+    use Common\Traits\PasswordProtected;
+
+    /**
+     * Primes for Chinese Remainder Theorem (ie. p and q)
+     *
+     * @var array
+     */
+    protected $primes;
+
+    /**
+     * Exponents for Chinese Remainder Theorem (ie. dP and dQ)
+     *
+     * @var array
+     */
+    protected $exponents;
+
+    /**
+     * Coefficients for Chinese Remainder Theorem (ie. qInv)
+     *
+     * @var array
+     */
+    protected $coefficients;
+
+    /**
+     * Private Exponent
+     *
+     * @var \phpseclib3\Math\BigInteger
+     */
+    protected $privateExponent;
+
+    /**
+     * RSADP
+     *
+     * See {@link http://tools.ietf.org/html/rfc3447#section-5.1.2 RFC3447#section-5.1.2}.
+     *
+     * @return bool|\phpseclib3\Math\BigInteger
+     */
+    private function rsadp(BigInteger $c)
+    {
+        if ($c->compare(self::$zero) < 0 || $c->compare($this->modulus) > 0) {
+            throw new \OutOfRangeException('Ciphertext representative out of range');
+        }
+        return $this->exponentiate($c);
+    }
+
+    /**
+     * RSASP1
+     *
+     * See {@link http://tools.ietf.org/html/rfc3447#section-5.2.1 RFC3447#section-5.2.1}.
+     *
+     * @return bool|\phpseclib3\Math\BigInteger
+     */
+    private function rsasp1(BigInteger $m)
+    {
+        if ($m->compare(self::$zero) < 0 || $m->compare($this->modulus) > 0) {
+            throw new \OutOfRangeException('Signature representative out of range');
+        }
+        return $this->exponentiate($m);
+    }
+
+    /**
+     * Exponentiate
+     *
+     * @param \phpseclib3\Math\BigInteger $x
+     * @return \phpseclib3\Math\BigInteger
+     */
+    protected function exponentiate(BigInteger $x)
+    {
+        switch (true) {
+            case empty($this->primes):
+            case $this->primes[1]->equals(self::$zero):
+            case empty($this->coefficients):
+            case $this->coefficients[2]->equals(self::$zero):
+            case empty($this->exponents):
+            case $this->exponents[1]->equals(self::$zero):
+                return $x->modPow($this->exponent, $this->modulus);
+        }
+
+        $num_primes = count($this->primes);
+
+        if (!static::$enableBlinding) {
+            $m_i = [
+                1 => $x->modPow($this->exponents[1], $this->primes[1]),
+                2 => $x->modPow($this->exponents[2], $this->primes[2])
+            ];
+            $h = $m_i[1]->subtract($m_i[2]);
+            $h = $h->multiply($this->coefficients[2]);
+            list(, $h) = $h->divide($this->primes[1]);
+            $m = $m_i[2]->add($h->multiply($this->primes[2]));
+
+            $r = $this->primes[1];
+            for ($i = 3; $i <= $num_primes; $i++) {
+                $m_i = $x->modPow($this->exponents[$i], $this->primes[$i]);
+
+                $r = $r->multiply($this->primes[$i - 1]);
+
+                $h = $m_i->subtract($m);
+                $h = $h->multiply($this->coefficients[$i]);
+                list(, $h) = $h->divide($this->primes[$i]);
+
+                $m = $m->add($r->multiply($h));
+            }
+        } else {
+            $smallest = $this->primes[1];
+            for ($i = 2; $i <= $num_primes; $i++) {
+                if ($smallest->compare($this->primes[$i]) > 0) {
+                    $smallest = $this->primes[$i];
+                }
+            }
+
+            $r = BigInteger::randomRange(self::$one, $smallest->subtract(self::$one));
+
+            $m_i = [
+                1 => $this->blind($x, $r, 1),
+                2 => $this->blind($x, $r, 2)
+            ];
+            $h = $m_i[1]->subtract($m_i[2]);
+            $h = $h->multiply($this->coefficients[2]);
+            list(, $h) = $h->divide($this->primes[1]);
+            $m = $m_i[2]->add($h->multiply($this->primes[2]));
+
+            $r = $this->primes[1];
+            for ($i = 3; $i <= $num_primes; $i++) {
+                $m_i = $this->blind($x, $r, $i);
+
+                $r = $r->multiply($this->primes[$i - 1]);
+
+                $h = $m_i->subtract($m);
+                $h = $h->multiply($this->coefficients[$i]);
+                list(, $h) = $h->divide($this->primes[$i]);
+
+                $m = $m->add($r->multiply($h));
+            }
+        }
+
+        return $m;
+    }
+
+    /**
+     * Performs RSA Blinding
+     *
+     * Protects against timing attacks by employing RSA Blinding.
+     * Returns $x->modPow($this->exponents[$i], $this->primes[$i])
+     *
+     * @param \phpseclib3\Math\BigInteger $x
+     * @param \phpseclib3\Math\BigInteger $r
+     * @param int $i
+     * @return \phpseclib3\Math\BigInteger
+     */
+    private function blind(BigInteger $x, BigInteger $r, $i)
+    {
+        $x = $x->multiply($r->modPow($this->publicExponent, $this->primes[$i]));
+        $x = $x->modPow($this->exponents[$i], $this->primes[$i]);
+
+        $r = $r->modInverse($this->primes[$i]);
+        $x = $x->multiply($r);
+        list(, $x) = $x->divide($this->primes[$i]);
+
+        return $x;
+    }
+
+    /**
+     * EMSA-PSS-ENCODE
+     *
+     * See {@link http://tools.ietf.org/html/rfc3447#section-9.1.1 RFC3447#section-9.1.1}.
+     *
+     * @return string
+     * @param string $m
+     * @throws \RuntimeException on encoding error
+     * @param int $emBits
+     */
+    private function emsa_pss_encode($m, $emBits)
+    {
+        // if $m is larger than two million terrabytes and you're using sha1, PKCS#1 suggests a "Label too long" error
+        // be output.
+
+        $emLen = ($emBits + 1) >> 3; // ie. ceil($emBits / 8)
+        $sLen = $this->sLen !== null ? $this->sLen : $this->hLen;
+
+        $mHash = $this->hash->hash($m);
+        if ($emLen < $this->hLen + $sLen + 2) {
+            throw new \LengthException('RSA modulus too short');
+        }
+
+        $salt = Random::string($sLen);
+        $m2 = "\0\0\0\0\0\0\0\0" . $mHash . $salt;
+        $h = $this->hash->hash($m2);
+        $ps = str_repeat(chr(0), $emLen - $sLen - $this->hLen - 2);
+        $db = $ps . chr(1) . $salt;
+        $dbMask = $this->mgf1($h, $emLen - $this->hLen - 1); // ie. stlren($db)
+        $maskedDB = $db ^ $dbMask;
+        $maskedDB[0] = ~chr(0xFF << ($emBits & 7)) & $maskedDB[0];
+        $em = $maskedDB . $h . chr(0xBC);
+
+        return $em;
+    }
+
+    /**
+     * RSASSA-PSS-SIGN
+     *
+     * See {@link http://tools.ietf.org/html/rfc3447#section-8.1.1 RFC3447#section-8.1.1}.
+     *
+     * @param string $m
+     * @return bool|string
+     */
+    private function rsassa_pss_sign($m)
+    {
+        // EMSA-PSS encoding
+
+        $em = $this->emsa_pss_encode($m, 8 * $this->k - 1);
+
+        // RSA signature
+
+        $m = $this->os2ip($em);
+        $s = $this->rsasp1($m);
+        $s = $this->i2osp($s, $this->k);
+
+        // Output the signature S
+
+        return $s;
+    }
+
+    /**
+     * RSASSA-PKCS1-V1_5-SIGN
+     *
+     * See {@link http://tools.ietf.org/html/rfc3447#section-8.2.1 RFC3447#section-8.2.1}.
+     *
+     * @param string $m
+     * @throws \LengthException if the RSA modulus is too short
+     * @return bool|string
+     */
+    private function rsassa_pkcs1_v1_5_sign($m)
+    {
+        // EMSA-PKCS1-v1_5 encoding
+
+        // If the encoding operation outputs "intended encoded message length too short," output "RSA modulus
+        // too short" and stop.
+        try {
+            $em = $this->emsa_pkcs1_v1_5_encode($m, $this->k);
+        } catch (\LengthException $e) {
+            throw new \LengthException('RSA modulus too short');
+        }
+
+        // RSA signature
+
+        $m = $this->os2ip($em);
+        $s = $this->rsasp1($m);
+        $s = $this->i2osp($s, $this->k);
+
+        // Output the signature S
+
+        return $s;
+    }
+
+    /**
+     * Create a signature
+     *
+     * @see self::verify()
+     * @param string $message
+     * @return string
+     */
+    public function sign($message)
+    {
+        switch ($this->signaturePadding) {
+            case self::SIGNATURE_PKCS1:
+            case self::SIGNATURE_RELAXED_PKCS1:
+                return $this->rsassa_pkcs1_v1_5_sign($message);
+            //case self::SIGNATURE_PSS:
+            default:
+                return $this->rsassa_pss_sign($message);
+        }
+    }
+
+    /**
+     * RSAES-PKCS1-V1_5-DECRYPT
+     *
+     * See {@link http://tools.ietf.org/html/rfc3447#section-7.2.2 RFC3447#section-7.2.2}.
+     *
+     * @param string $c
+     * @return bool|string
+     */
+    private function rsaes_pkcs1_v1_5_decrypt($c)
+    {
+        // Length checking
+
+        if (strlen($c) != $this->k) { // or if k < 11
+            throw new \LengthException('Ciphertext representative too long');
+        }
+
+        // RSA decryption
+
+        $c = $this->os2ip($c);
+        $m = $this->rsadp($c);
+        $em = $this->i2osp($m, $this->k);
+
+        // EME-PKCS1-v1_5 decoding
+
+        if (ord($em[0]) != 0 || ord($em[1]) > 2) {
+            throw new \RuntimeException('Decryption error');
+        }
+
+        $ps = substr($em, 2, strpos($em, chr(0), 2) - 2);
+        $m = substr($em, strlen($ps) + 3);
+
+        if (strlen($ps) < 8) {
+            throw new \RuntimeException('Decryption error');
+        }
+
+        // Output M
+
+        return $m;
+    }
+
+    /**
+     * RSAES-OAEP-DECRYPT
+     *
+     * See {@link http://tools.ietf.org/html/rfc3447#section-7.1.2 RFC3447#section-7.1.2}.  The fact that the error
+     * messages aren't distinguishable from one another hinders debugging, but, to quote from RFC3447#section-7.1.2:
+     *
+     *    Note.  Care must be taken to ensure that an opponent cannot
+     *    distinguish the different error conditions in Step 3.g, whether by
+     *    error message or timing, or, more generally, learn partial
+     *    information about the encoded message EM.  Otherwise an opponent may
+     *    be able to obtain useful information about the decryption of the
+     *    ciphertext C, leading to a chosen-ciphertext attack such as the one
+     *    observed by Manger [36].
+     *
+     * @param string $c
+     * @return bool|string
+     */
+    private function rsaes_oaep_decrypt($c)
+    {
+        // Length checking
+
+        // if $l is larger than two million terrabytes and you're using sha1, PKCS#1 suggests a "Label too long" error
+        // be output.
+
+        if (strlen($c) != $this->k || $this->k < 2 * $this->hLen + 2) {
+            throw new \LengthException('Ciphertext representative too long');
+        }
+
+        // RSA decryption
+
+        $c = $this->os2ip($c);
+        $m = $this->rsadp($c);
+        $em = $this->i2osp($m, $this->k);
+
+        // EME-OAEP decoding
+
+        $lHash = $this->hash->hash($this->label);
+        $y = ord($em[0]);
+        $maskedSeed = substr($em, 1, $this->hLen);
+        $maskedDB = substr($em, $this->hLen + 1);
+        $seedMask = $this->mgf1($maskedDB, $this->hLen);
+        $seed = $maskedSeed ^ $seedMask;
+        $dbMask = $this->mgf1($seed, $this->k - $this->hLen - 1);
+        $db = $maskedDB ^ $dbMask;
+        $lHash2 = substr($db, 0, $this->hLen);
+        $m = substr($db, $this->hLen);
+        $hashesMatch = hash_equals($lHash, $lHash2);
+        $leadingZeros = 1;
+        $patternMatch = 0;
+        $offset = 0;
+        for ($i = 0; $i < strlen($m); $i++) {
+            $patternMatch |= $leadingZeros & ($m[$i] === "\1");
+            $leadingZeros &= $m[$i] === "\0";
+            $offset += $patternMatch ? 0 : 1;
+        }
+
+        // we do | instead of || to avoid https://en.wikipedia.org/wiki/Short-circuit_evaluation
+        // to protect against timing attacks
+        if (!$hashesMatch | !$patternMatch) {
+            throw new \RuntimeException('Decryption error');
+        }
+
+        // Output the message M
+
+        return substr($m, $offset + 1);
+    }
+
+    /**
+     * Raw Encryption / Decryption
+     *
+     * Doesn't use padding and is not recommended.
+     *
+     * @param string $m
+     * @return bool|string
+     * @throws \LengthException if strlen($m) > $this->k
+     */
+    private function raw_encrypt($m)
+    {
+        if (strlen($m) > $this->k) {
+            throw new \LengthException('Ciphertext representative too long');
+        }
+
+        $temp = $this->os2ip($m);
+        $temp = $this->rsadp($temp);
+        return  $this->i2osp($temp, $this->k);
+    }
+
+    /**
+     * Decryption
+     *
+     * @see self::encrypt()
+     * @param string $ciphertext
+     * @return bool|string
+     */
+    public function decrypt($ciphertext)
+    {
+        switch ($this->encryptionPadding) {
+            case self::ENCRYPTION_NONE:
+                return $this->raw_encrypt($ciphertext);
+            case self::ENCRYPTION_PKCS1:
+                return $this->rsaes_pkcs1_v1_5_decrypt($ciphertext);
+            //case self::ENCRYPTION_OAEP:
+            default:
+                return $this->rsaes_oaep_decrypt($ciphertext);
+        }
+    }
+
+    /**
+     * Returns the public key
+     *
+     * @return mixed
+     */
+    public function getPublicKey()
+    {
+        $type = self::validatePlugin('Keys', 'PKCS8', 'savePublicKey');
+        if (empty($this->modulus) || empty($this->publicExponent)) {
+            throw new \RuntimeException('Public key components not found');
+        }
+
+        $key = $type::savePublicKey($this->modulus, $this->publicExponent);
+        return RSA::loadFormat('PKCS8', $key)
+            ->withHash($this->hash->getHash())
+            ->withMGFHash($this->mgfHash->getHash())
+            ->withSaltLength($this->sLen)
+            ->withLabel($this->label)
+            ->withPadding($this->signaturePadding | $this->encryptionPadding);
+    }
+
+    /**
+     * Returns the private key
+     *
+     * @param string $type
+     * @param array $options optional
+     * @return string
+     */
+    public function toString($type, array $options = [])
+    {
+        $type = self::validatePlugin(
+            'Keys',
+            $type,
+            empty($this->primes) ? 'savePublicKey' : 'savePrivateKey'
+        );
+
+        if ($type == PSS::class) {
+            if ($this->signaturePadding == self::SIGNATURE_PSS) {
+                $options += [
+                    'hash' => $this->hash->getHash(),
+                    'MGFHash' => $this->mgfHash->getHash(),
+                    'saltLength' => $this->getSaltLength()
+                ];
+            } else {
+                throw new UnsupportedFormatException('The PSS format can only be used when the signature method has been explicitly set to PSS');
+            }
+        }
+
+        if (empty($this->primes)) {
+            return $type::savePublicKey($this->modulus, $this->exponent, $options);
+        }
+
+        return $type::savePrivateKey($this->modulus, $this->publicExponent, $this->exponent, $this->primes, $this->exponents, $this->coefficients, $this->password, $options);
+
+        /*
+        $key = $type::savePrivateKey($this->modulus, $this->publicExponent, $this->exponent, $this->primes, $this->exponents, $this->coefficients, $this->password, $options);
+        if ($key !== false || count($this->primes) == 2) {
+            return $key;
+        }
+
+        $nSize = $this->getSize() >> 1;
+
+        $primes = [1 => clone self::$one, clone self::$one];
+        $i = 1;
+        foreach ($this->primes as $prime) {
+            $primes[$i] = $primes[$i]->multiply($prime);
+            if ($primes[$i]->getLength() >= $nSize) {
+                $i++;
+            }
+        }
+
+        $exponents = [];
+        $coefficients = [2 => $primes[2]->modInverse($primes[1])];
+
+        foreach ($primes as $i => $prime) {
+            $temp = $prime->subtract(self::$one);
+            $exponents[$i] = $this->modulus->modInverse($temp);
+        }
+
+        return $type::savePrivateKey($this->modulus, $this->publicExponent, $this->exponent, $primes, $exponents, $coefficients, $this->password, $options);
+        */
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/RSA/PublicKey.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/RSA/PublicKey.php
new file mode 100644
index 0000000..58939a9
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/RSA/PublicKey.php
@@ -0,0 +1,513 @@
+<?php
+
+/**
+ * RSA Public Key
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\RSA;
+
+use phpseclib3\Common\Functions\Strings;
+use phpseclib3\Crypt\Common;
+use phpseclib3\Crypt\Hash;
+use phpseclib3\Crypt\Random;
+use phpseclib3\Crypt\RSA;
+use phpseclib3\Crypt\RSA\Formats\Keys\PSS;
+use phpseclib3\Exception\UnsupportedAlgorithmException;
+use phpseclib3\Exception\UnsupportedFormatException;
+use phpseclib3\File\ASN1;
+use phpseclib3\File\ASN1\Maps\DigestInfo;
+use phpseclib3\Math\BigInteger;
+
+/**
+ * Raw RSA Key Handler
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+final class PublicKey extends RSA implements Common\PublicKey
+{
+    use Common\Traits\Fingerprint;
+
+    /**
+     * Exponentiate
+     *
+     * @param \phpseclib3\Math\BigInteger $x
+     * @return \phpseclib3\Math\BigInteger
+     */
+    private function exponentiate(BigInteger $x)
+    {
+        return $x->modPow($this->exponent, $this->modulus);
+    }
+
+    /**
+     * RSAVP1
+     *
+     * See {@link http://tools.ietf.org/html/rfc3447#section-5.2.2 RFC3447#section-5.2.2}.
+     *
+     * @param \phpseclib3\Math\BigInteger $s
+     * @return bool|\phpseclib3\Math\BigInteger
+     */
+    private function rsavp1($s)
+    {
+        if ($s->compare(self::$zero) < 0 || $s->compare($this->modulus) > 0) {
+            return false;
+        }
+        return $this->exponentiate($s);
+    }
+
+    /**
+     * RSASSA-PKCS1-V1_5-VERIFY
+     *
+     * See {@link http://tools.ietf.org/html/rfc3447#section-8.2.2 RFC3447#section-8.2.2}.
+     *
+     * @param string $m
+     * @param string $s
+     * @throws \LengthException if the RSA modulus is too short
+     * @return bool
+     */
+    private function rsassa_pkcs1_v1_5_verify($m, $s)
+    {
+        // Length checking
+
+        if (strlen($s) != $this->k) {
+            return false;
+        }
+
+        // RSA verification
+
+        $s = $this->os2ip($s);
+        $m2 = $this->rsavp1($s);
+        if ($m2 === false) {
+            return false;
+        }
+        $em = $this->i2osp($m2, $this->k);
+        if ($em === false) {
+            return false;
+        }
+
+        // EMSA-PKCS1-v1_5 encoding
+
+        $exception = false;
+
+        // If the encoding operation outputs "intended encoded message length too short," output "RSA modulus
+        // too short" and stop.
+        try {
+            $em2 = $this->emsa_pkcs1_v1_5_encode($m, $this->k);
+            $r1 = hash_equals($em, $em2);
+        } catch (\LengthException $e) {
+            $exception = true;
+        }
+
+        try {
+            $em3 = $this->emsa_pkcs1_v1_5_encode_without_null($m, $this->k);
+            $r2 = hash_equals($em, $em3);
+        } catch (\LengthException $e) {
+            $exception = true;
+        } catch (UnsupportedAlgorithmException $e) {
+            $r2 = false;
+        }
+
+        if ($exception) {
+            throw new \LengthException('RSA modulus too short');
+        }
+
+        // Compare
+        return $r1 || $r2;
+    }
+
+    /**
+     * RSASSA-PKCS1-V1_5-VERIFY (relaxed matching)
+     *
+     * Per {@link http://tools.ietf.org/html/rfc3447#page-43 RFC3447#page-43} PKCS1 v1.5
+     * specified the use BER encoding rather than DER encoding that PKCS1 v2.0 specified.
+     * This means that under rare conditions you can have a perfectly valid v1.5 signature
+     * that fails to validate with _rsassa_pkcs1_v1_5_verify(). PKCS1 v2.1 also recommends
+     * that if you're going to validate these types of signatures you "should indicate
+     * whether the underlying BER encoding is a DER encoding and hence whether the signature
+     * is valid with respect to the specification given in [PKCS1 v2.0+]". so if you do
+     * $rsa->getLastPadding() and get RSA::PADDING_RELAXED_PKCS1 back instead of
+     * RSA::PADDING_PKCS1... that means BER encoding was used.
+     *
+     * @param string $m
+     * @param string $s
+     * @return bool
+     */
+    private function rsassa_pkcs1_v1_5_relaxed_verify($m, $s)
+    {
+        // Length checking
+
+        if (strlen($s) != $this->k) {
+            return false;
+        }
+
+        // RSA verification
+
+        $s = $this->os2ip($s);
+        $m2 = $this->rsavp1($s);
+        if ($m2 === false) {
+            return false;
+        }
+        $em = $this->i2osp($m2, $this->k);
+        if ($em === false) {
+            return false;
+        }
+
+        if (Strings::shift($em, 2) != "\0\1") {
+            return false;
+        }
+
+        $em = ltrim($em, "\xFF");
+        if (Strings::shift($em) != "\0") {
+            return false;
+        }
+
+        $decoded = ASN1::decodeBER($em);
+        if (!is_array($decoded) || empty($decoded[0]) || strlen($em) > $decoded[0]['length']) {
+            return false;
+        }
+
+        static $oids;
+        if (!isset($oids)) {
+            $oids = [
+                'md2' => '1.2.840.113549.2.2',
+                'md4' => '1.2.840.113549.2.4', // from PKCS1 v1.5
+                'md5' => '1.2.840.113549.2.5',
+                'id-sha1' => '1.3.14.3.2.26',
+                'id-sha256' => '2.16.840.1.101.3.4.2.1',
+                'id-sha384' => '2.16.840.1.101.3.4.2.2',
+                'id-sha512' => '2.16.840.1.101.3.4.2.3',
+                // from PKCS1 v2.2
+                'id-sha224' => '2.16.840.1.101.3.4.2.4',
+                'id-sha512/224' => '2.16.840.1.101.3.4.2.5',
+                'id-sha512/256' => '2.16.840.1.101.3.4.2.6',
+            ];
+            ASN1::loadOIDs($oids);
+        }
+
+        $decoded = ASN1::asn1map($decoded[0], DigestInfo::MAP);
+        if (!isset($decoded) || $decoded === false) {
+            return false;
+        }
+
+        if (!isset($oids[$decoded['digestAlgorithm']['algorithm']])) {
+            return false;
+        }
+
+        if (isset($decoded['digestAlgorithm']['parameters']) && $decoded['digestAlgorithm']['parameters'] !== ['null' => '']) {
+            return false;
+        }
+
+        $hash = $decoded['digestAlgorithm']['algorithm'];
+        $hash = substr($hash, 0, 3) == 'id-' ?
+            substr($hash, 3) :
+            $hash;
+        $hash = new Hash($hash);
+        $em = $hash->hash($m);
+        $em2 = $decoded['digest'];
+
+        return hash_equals($em, $em2);
+    }
+
+    /**
+     * EMSA-PSS-VERIFY
+     *
+     * See {@link http://tools.ietf.org/html/rfc3447#section-9.1.2 RFC3447#section-9.1.2}.
+     *
+     * @param string $m
+     * @param string $em
+     * @param int $emBits
+     * @return string
+     */
+    private function emsa_pss_verify($m, $em, $emBits)
+    {
+        // if $m is larger than two million terrabytes and you're using sha1, PKCS#1 suggests a "Label too long" error
+        // be output.
+
+        $emLen = ($emBits + 7) >> 3; // ie. ceil($emBits / 8);
+        $sLen = $this->sLen !== null ? $this->sLen : $this->hLen;
+
+        $mHash = $this->hash->hash($m);
+        if ($emLen < $this->hLen + $sLen + 2) {
+            return false;
+        }
+
+        if ($em[strlen($em) - 1] != chr(0xBC)) {
+            return false;
+        }
+
+        $maskedDB = substr($em, 0, -$this->hLen - 1);
+        $h = substr($em, -$this->hLen - 1, $this->hLen);
+        $temp = chr(0xFF << ($emBits & 7));
+        if ((~$maskedDB[0] & $temp) != $temp) {
+            return false;
+        }
+        $dbMask = $this->mgf1($h, $emLen - $this->hLen - 1);
+        $db = $maskedDB ^ $dbMask;
+        $db[0] = ~chr(0xFF << ($emBits & 7)) & $db[0];
+        $temp = $emLen - $this->hLen - $sLen - 2;
+        if (substr($db, 0, $temp) != str_repeat(chr(0), $temp) || ord($db[$temp]) != 1) {
+            return false;
+        }
+        $salt = substr($db, $temp + 1); // should be $sLen long
+        $m2 = "\0\0\0\0\0\0\0\0" . $mHash . $salt;
+        $h2 = $this->hash->hash($m2);
+        return hash_equals($h, $h2);
+    }
+
+    /**
+     * RSASSA-PSS-VERIFY
+     *
+     * See {@link http://tools.ietf.org/html/rfc3447#section-8.1.2 RFC3447#section-8.1.2}.
+     *
+     * @param string $m
+     * @param string $s
+     * @return bool|string
+     */
+    private function rsassa_pss_verify($m, $s)
+    {
+        // Length checking
+
+        if (strlen($s) != $this->k) {
+            return false;
+        }
+
+        // RSA verification
+
+        $modBits = strlen($this->modulus->toBits());
+
+        $s2 = $this->os2ip($s);
+        $m2 = $this->rsavp1($s2);
+        $em = $this->i2osp($m2, $this->k);
+        if ($em === false) {
+            return false;
+        }
+
+        // EMSA-PSS verification
+
+        return $this->emsa_pss_verify($m, $em, $modBits - 1);
+    }
+
+    /**
+     * Verifies a signature
+     *
+     * @see self::sign()
+     * @param string $message
+     * @param string $signature
+     * @return bool
+     */
+    public function verify($message, $signature)
+    {
+        switch ($this->signaturePadding) {
+            case self::SIGNATURE_RELAXED_PKCS1:
+                return $this->rsassa_pkcs1_v1_5_relaxed_verify($message, $signature);
+            case self::SIGNATURE_PKCS1:
+                return $this->rsassa_pkcs1_v1_5_verify($message, $signature);
+            //case self::SIGNATURE_PSS:
+            default:
+                return $this->rsassa_pss_verify($message, $signature);
+        }
+    }
+
+    /**
+     * RSAES-PKCS1-V1_5-ENCRYPT
+     *
+     * See {@link http://tools.ietf.org/html/rfc3447#section-7.2.1 RFC3447#section-7.2.1}.
+     *
+     * @param string $m
+     * @param bool $pkcs15_compat optional
+     * @throws \LengthException if strlen($m) > $this->k - 11
+     * @return bool|string
+     */
+    private function rsaes_pkcs1_v1_5_encrypt($m, $pkcs15_compat = false)
+    {
+        $mLen = strlen($m);
+
+        // Length checking
+
+        if ($mLen > $this->k - 11) {
+            throw new \LengthException('Message too long');
+        }
+
+        // EME-PKCS1-v1_5 encoding
+
+        $psLen = $this->k - $mLen - 3;
+        $ps = '';
+        while (strlen($ps) != $psLen) {
+            $temp = Random::string($psLen - strlen($ps));
+            $temp = str_replace("\x00", '', $temp);
+            $ps .= $temp;
+        }
+        $type = 2;
+        $em = chr(0) . chr($type) . $ps . chr(0) . $m;
+
+        // RSA encryption
+        $m = $this->os2ip($em);
+        $c = $this->rsaep($m);
+        $c = $this->i2osp($c, $this->k);
+
+        // Output the ciphertext C
+
+        return $c;
+    }
+
+    /**
+     * RSAES-OAEP-ENCRYPT
+     *
+     * See {@link http://tools.ietf.org/html/rfc3447#section-7.1.1 RFC3447#section-7.1.1} and
+     * {http://en.wikipedia.org/wiki/Optimal_Asymmetric_Encryption_Padding OAES}.
+     *
+     * @param string $m
+     * @throws \LengthException if strlen($m) > $this->k - 2 * $this->hLen - 2
+     * @return string
+     */
+    private function rsaes_oaep_encrypt($m)
+    {
+        $mLen = strlen($m);
+
+        // Length checking
+
+        // if $l is larger than two million terrabytes and you're using sha1, PKCS#1 suggests a "Label too long" error
+        // be output.
+
+        if ($mLen > $this->k - 2 * $this->hLen - 2) {
+            throw new \LengthException('Message too long');
+        }
+
+        // EME-OAEP encoding
+
+        $lHash = $this->hash->hash($this->label);
+        $ps = str_repeat(chr(0), $this->k - $mLen - 2 * $this->hLen - 2);
+        $db = $lHash . $ps . chr(1) . $m;
+        $seed = Random::string($this->hLen);
+        $dbMask = $this->mgf1($seed, $this->k - $this->hLen - 1);
+        $maskedDB = $db ^ $dbMask;
+        $seedMask = $this->mgf1($maskedDB, $this->hLen);
+        $maskedSeed = $seed ^ $seedMask;
+        $em = chr(0) . $maskedSeed . $maskedDB;
+
+        // RSA encryption
+
+        $m = $this->os2ip($em);
+        $c = $this->rsaep($m);
+        $c = $this->i2osp($c, $this->k);
+
+        // Output the ciphertext C
+
+        return $c;
+    }
+
+    /**
+     * RSAEP
+     *
+     * See {@link http://tools.ietf.org/html/rfc3447#section-5.1.1 RFC3447#section-5.1.1}.
+     *
+     * @param \phpseclib3\Math\BigInteger $m
+     * @return bool|\phpseclib3\Math\BigInteger
+     */
+    private function rsaep($m)
+    {
+        if ($m->compare(self::$zero) < 0 || $m->compare($this->modulus) > 0) {
+            throw new \OutOfRangeException('Message representative out of range');
+        }
+        return $this->exponentiate($m);
+    }
+
+    /**
+     * Raw Encryption / Decryption
+     *
+     * Doesn't use padding and is not recommended.
+     *
+     * @param string $m
+     * @return bool|string
+     * @throws \LengthException if strlen($m) > $this->k
+     */
+    private function raw_encrypt($m)
+    {
+        if (strlen($m) > $this->k) {
+            throw new \LengthException('Message too long');
+        }
+
+        $temp = $this->os2ip($m);
+        $temp = $this->rsaep($temp);
+        return  $this->i2osp($temp, $this->k);
+    }
+
+    /**
+     * Encryption
+     *
+     * Both self::PADDING_OAEP and self::PADDING_PKCS1 both place limits on how long $plaintext can be.
+     * If $plaintext exceeds those limits it will be broken up so that it does and the resultant ciphertext's will
+     * be concatenated together.
+     *
+     * @see self::decrypt()
+     * @param string $plaintext
+     * @return bool|string
+     * @throws \LengthException if the RSA modulus is too short
+     */
+    public function encrypt($plaintext)
+    {
+        switch ($this->encryptionPadding) {
+            case self::ENCRYPTION_NONE:
+                return $this->raw_encrypt($plaintext);
+            case self::ENCRYPTION_PKCS1:
+                return $this->rsaes_pkcs1_v1_5_encrypt($plaintext);
+            //case self::ENCRYPTION_OAEP:
+            default:
+                return $this->rsaes_oaep_encrypt($plaintext);
+        }
+    }
+
+    /**
+     * Returns the public key
+     *
+     * The public key is only returned under two circumstances - if the private key had the public key embedded within it
+     * or if the public key was set via setPublicKey().  If the currently loaded key is supposed to be the public key this
+     * function won't return it since this library, for the most part, doesn't distinguish between public and private keys.
+     *
+     * @param string $type
+     * @param array $options optional
+     * @return mixed
+     */
+    public function toString($type, array $options = [])
+    {
+        $type = self::validatePlugin('Keys', $type, 'savePublicKey');
+
+        if ($type == PSS::class) {
+            if ($this->signaturePadding == self::SIGNATURE_PSS) {
+                $options += [
+                    'hash' => $this->hash->getHash(),
+                    'MGFHash' => $this->mgfHash->getHash(),
+                    'saltLength' => $this->getSaltLength()
+                ];
+            } else {
+                throw new UnsupportedFormatException('The PSS format can only be used when the signature method has been explicitly set to PSS');
+            }
+        }
+
+        return $type::savePublicKey($this->modulus, $this->publicExponent, $options);
+    }
+
+    /**
+     * Converts a public key to a private key
+     *
+     * @return RSA
+     */
+    public function asPrivateKey()
+    {
+        $new = new PrivateKey();
+        $new->exponent = $this->exponent;
+        $new->modulus = $this->modulus;
+        $new->k = $this->k;
+        $new->format = $this->format;
+        return $new
+            ->withHash($this->hash->getHash())
+            ->withMGFHash($this->mgfHash->getHash())
+            ->withSaltLength($this->sLen)
+            ->withLabel($this->label)
+            ->withPadding($this->signaturePadding | $this->encryptionPadding);
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/Random.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/Random.php
new file mode 100644
index 0000000..f813a2e
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/Random.php
@@ -0,0 +1,222 @@
+<?php
+
+/**
+ * Random Number Generator
+ *
+ * PHP version 5
+ *
+ * Here's a short example of how to use this library:
+ * <code>
+ * <?php
+ *    include 'vendor/autoload.php';
+ *
+ *    echo bin2hex(\phpseclib3\Crypt\Random::string(8));
+ * ?>
+ * </code>
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2007 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt;
+
+/**
+ * Pure-PHP Random Number Generator
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class Random
+{
+    /**
+     * Generate a random string.
+     *
+     * Although microoptimizations are generally discouraged as they impair readability this function is ripe with
+     * microoptimizations because this function has the potential of being called a huge number of times.
+     * eg. for RSA key generation.
+     *
+     * @param int $length
+     * @throws \RuntimeException if a symmetric cipher is needed but not loaded
+     * @return string
+     */
+    public static function string($length)
+    {
+        if (!$length) {
+            return '';
+        }
+
+        try {
+            return random_bytes($length);
+        } catch (\Exception $e) {
+            // random_compat will throw an Exception, which in PHP 5 does not implement Throwable
+        } catch (\Throwable $e) {
+            // If a sufficient source of randomness is unavailable, random_bytes() will throw an
+            // object that implements the Throwable interface (Exception, TypeError, Error).
+            // We don't actually need to do anything here. The string() method should just continue
+            // as normal. Note, however, that if we don't have a sufficient source of randomness for
+            // random_bytes(), most of the other calls here will fail too, so we'll end up using
+            // the PHP implementation.
+        }
+        // at this point we have no choice but to use a pure-PHP CSPRNG
+
+        // cascade entropy across multiple PHP instances by fixing the session and collecting all
+        // environmental variables, including the previous session data and the current session
+        // data.
+        //
+        // mt_rand seeds itself by looking at the PID and the time, both of which are (relatively)
+        // easy to guess at. linux uses mouse clicks, keyboard timings, etc, as entropy sources, but
+        // PHP isn't low level to be able to use those as sources and on a web server there's not likely
+        // going to be a ton of keyboard or mouse action. web servers do have one thing that we can use
+        // however, a ton of people visiting the website. obviously you don't want to base your seeding
+        // solely on parameters a potential attacker sends but (1) not everything in $_SERVER is controlled
+        // by the user and (2) this isn't just looking at the data sent by the current user - it's based
+        // on the data sent by all users. one user requests the page and a hash of their info is saved.
+        // another user visits the page and the serialization of their data is utilized along with the
+        // server environment stuff and a hash of the previous http request data (which itself utilizes
+        // a hash of the session data before that). certainly an attacker should be assumed to have
+        // full control over his own http requests. he, however, is not going to have control over
+        // everyone's http requests.
+        static $crypto = false, $v;
+        if ($crypto === false) {
+            // save old session data
+            $old_session_id = session_id();
+            $old_use_cookies = ini_get('session.use_cookies');
+            $old_session_cache_limiter = session_cache_limiter();
+            $_OLD_SESSION = isset($_SESSION) ? $_SESSION : false;
+            if ($old_session_id != '') {
+                session_write_close();
+            }
+
+            session_id(1);
+            ini_set('session.use_cookies', 0);
+            session_cache_limiter('');
+            session_start();
+
+            $v = (isset($_SERVER) ? self::safe_serialize($_SERVER) : '') .
+                 (isset($_POST) ? self::safe_serialize($_POST) : '') .
+                 (isset($_GET) ? self::safe_serialize($_GET) : '') .
+                 (isset($_COOKIE) ? self::safe_serialize($_COOKIE) : '') .
+                 // as of PHP 8.1 $GLOBALS can't be accessed by reference, which eliminates
+                 // the need for phpseclib_safe_serialize. see https://wiki.php.net/rfc/restrict_globals_usage
+                 // for more info
+                 (version_compare(PHP_VERSION, '8.1.0', '>=') ? serialize($GLOBALS) : self::safe_serialize($GLOBALS)) .
+                 self::safe_serialize($_SESSION) .
+                 self::safe_serialize($_OLD_SESSION);
+            $v = $seed = $_SESSION['seed'] = sha1($v, true);
+            if (!isset($_SESSION['count'])) {
+                $_SESSION['count'] = 0;
+            }
+            $_SESSION['count']++;
+
+            session_write_close();
+
+            // restore old session data
+            if ($old_session_id != '') {
+                session_id($old_session_id);
+                session_start();
+                ini_set('session.use_cookies', $old_use_cookies);
+                session_cache_limiter($old_session_cache_limiter);
+            } else {
+                if ($_OLD_SESSION !== false) {
+                    $_SESSION = $_OLD_SESSION;
+                    unset($_OLD_SESSION);
+                } else {
+                    unset($_SESSION);
+                }
+            }
+
+            // in SSH2 a shared secret and an exchange hash are generated through the key exchange process.
+            // the IV client to server is the hash of that "nonce" with the letter A and for the encryption key it's the letter C.
+            // if the hash doesn't produce enough a key or an IV that's long enough concat successive hashes of the
+            // original hash and the current hash. we'll be emulating that. for more info see the following URL:
+            //
+            // http://tools.ietf.org/html/rfc4253#section-7.2
+            //
+            // see the is_string($crypto) part for an example of how to expand the keys
+            $key = sha1($seed . 'A', true);
+            $iv = sha1($seed . 'C', true);
+
+            // ciphers are used as per the nist.gov link below. also, see this link:
+            //
+            // http://en.wikipedia.org/wiki/Cryptographically_secure_pseudorandom_number_generator#Designs_based_on_cryptographic_primitives
+            switch (true) {
+                case class_exists('\phpseclib3\Crypt\AES'):
+                    $crypto = new AES('ctr');
+                    break;
+                case class_exists('\phpseclib3\Crypt\Twofish'):
+                    $crypto = new Twofish('ctr');
+                    break;
+                case class_exists('\phpseclib3\Crypt\Blowfish'):
+                    $crypto = new Blowfish('ctr');
+                    break;
+                case class_exists('\phpseclib3\Crypt\TripleDES'):
+                    $crypto = new TripleDES('ctr');
+                    break;
+                case class_exists('\phpseclib3\Crypt\DES'):
+                    $crypto = new DES('ctr');
+                    break;
+                case class_exists('\phpseclib3\Crypt\RC4'):
+                    $crypto = new RC4();
+                    break;
+                default:
+                    throw new \RuntimeException(__CLASS__ . ' requires at least one symmetric cipher be loaded');
+            }
+
+            $crypto->setKey(substr($key, 0, $crypto->getKeyLength() >> 3));
+            $crypto->setIV(substr($iv, 0, $crypto->getBlockLength() >> 3));
+            $crypto->enableContinuousBuffer();
+        }
+
+        //return $crypto->encrypt(str_repeat("\0", $length));
+
+        // the following is based off of ANSI X9.31:
+        //
+        // http://csrc.nist.gov/groups/STM/cavp/documents/rng/931rngext.pdf
+        //
+        // OpenSSL uses that same standard for it's random numbers:
+        //
+        // http://www.opensource.apple.com/source/OpenSSL/OpenSSL-38/openssl/fips-1.0/rand/fips_rand.c
+        // (do a search for "ANS X9.31 A.2.4")
+        $result = '';
+        while (strlen($result) < $length) {
+            $i = $crypto->encrypt(microtime()); // strlen(microtime()) == 21
+            $r = $crypto->encrypt($i ^ $v); // strlen($v) == 20
+            $v = $crypto->encrypt($r ^ $i); // strlen($r) == 20
+            $result .= $r;
+        }
+
+        return substr($result, 0, $length);
+    }
+
+    /**
+     * Safely serialize variables
+     *
+     * If a class has a private __sleep() it'll emit a warning
+     * @return mixed
+     * @param mixed $arr
+     */
+    private static function safe_serialize(&$arr)
+    {
+        if (is_object($arr)) {
+            return '';
+        }
+        if (!is_array($arr)) {
+            return serialize($arr);
+        }
+        // prevent circular array recursion
+        if (isset($arr['__phpseclib_marker'])) {
+            return '';
+        }
+        $safearr = [];
+        $arr['__phpseclib_marker'] = true;
+        foreach (array_keys($arr) as $key) {
+            // do not recurse on the '__phpseclib_marker' key itself, for smaller memory usage
+            if ($key !== '__phpseclib_marker') {
+                $safearr[$key] = self::safe_serialize($arr[$key]);
+            }
+        }
+        unset($arr['__phpseclib_marker']);
+        return serialize($safearr);
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/Rijndael.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/Rijndael.php
new file mode 100644
index 0000000..ff31f9c
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/Rijndael.php
@@ -0,0 +1,1036 @@
+<?php
+
+/**
+ * Pure-PHP implementation of Rijndael.
+ *
+ * Uses mcrypt, if available/possible, and an internal implementation, otherwise.
+ *
+ * PHP version 5
+ *
+ * If {@link self::setBlockLength() setBlockLength()} isn't called, it'll be assumed to be 128 bits.  If
+ * {@link self::setKeyLength() setKeyLength()} isn't called, it'll be calculated from
+ * {@link self::setKey() setKey()}.  ie. if the key is 128-bits, the key length will be 128-bits.  If it's
+ * 136-bits it'll be null-padded to 192-bits and 192 bits will be the key length until
+ * {@link self::setKey() setKey()} is called, again, at which point, it'll be recalculated.
+ *
+ * Not all Rijndael implementations may support 160-bits or 224-bits as the block length / key length.  mcrypt, for example,
+ * does not.  AES, itself, only supports block lengths of 128 and key lengths of 128, 192, and 256.
+ * {@link http://csrc.nist.gov/archive/aes/rijndael/Rijndael-ammended.pdf#page=10 Rijndael-ammended.pdf#page=10} defines the
+ * algorithm for block lengths of 192 and 256 but not for block lengths / key lengths of 160 and 224.  Indeed, 160 and 224
+ * are first defined as valid key / block lengths in
+ * {@link http://csrc.nist.gov/archive/aes/rijndael/Rijndael-ammended.pdf#page=44 Rijndael-ammended.pdf#page=44}:
+ * Extensions: Other block and Cipher Key lengths.
+ * Note: Use of 160/224-bit Keys must be explicitly set by setKeyLength(160) respectively setKeyLength(224).
+ *
+ * {@internal The variable names are the same as those in
+ * {@link http://www.csrc.nist.gov/publications/fips/fips197/fips-197.pdf#page=10 fips-197.pdf#page=10}.}}
+ *
+ * Here's a short example of how to use this library:
+ * <code>
+ * <?php
+ *    include 'vendor/autoload.php';
+ *
+ *    $rijndael = new \phpseclib3\Crypt\Rijndael('ctr');
+ *
+ *    $rijndael->setKey('abcdefghijklmnop');
+ *
+ *    $size = 10 * 1024;
+ *    $plaintext = '';
+ *    for ($i = 0; $i < $size; $i++) {
+ *        $plaintext.= 'a';
+ *    }
+ *
+ *    echo $rijndael->decrypt($rijndael->encrypt($plaintext));
+ * ?>
+ * </code>
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2008 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt;
+
+use phpseclib3\Common\Functions\Strings;
+use phpseclib3\Crypt\Common\BlockCipher;
+use phpseclib3\Exception\BadDecryptionException;
+use phpseclib3\Exception\BadModeException;
+use phpseclib3\Exception\InconsistentSetupException;
+use phpseclib3\Exception\InsufficientSetupException;
+
+/**
+ * Pure-PHP implementation of Rijndael.
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+class Rijndael extends BlockCipher
+{
+    /**
+     * The mcrypt specific name of the cipher
+     *
+     * Mcrypt is useable for 128/192/256-bit $block_size/$key_length. For 160/224 not.
+     * \phpseclib3\Crypt\Rijndael determines automatically whether mcrypt is useable
+     * or not for the current $block_size/$key_length.
+     * In case of, $cipher_name_mcrypt will be set dynamically at run time accordingly.
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::cipher_name_mcrypt
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::engine
+     * @see self::isValidEngine()
+     * @var string
+     */
+    protected $cipher_name_mcrypt = 'rijndael-128';
+
+    /**
+     * The Key Schedule
+     *
+     * @see self::setup()
+     * @var array
+     */
+    private $w;
+
+    /**
+     * The Inverse Key Schedule
+     *
+     * @see self::setup()
+     * @var array
+     */
+    private $dw;
+
+    /**
+     * The Block Length divided by 32
+     *
+     * {@internal The max value is 256 / 32 = 8, the min value is 128 / 32 = 4.  Exists in conjunction with $block_size
+     *    because the encryption / decryption / key schedule creation requires this number and not $block_size.  We could
+     *    derive this from $block_size or vice versa, but that'd mean we'd have to do multiple shift operations, so in lieu
+     *    of that, we'll just precompute it once.}
+     *
+     * @see self::setBlockLength()
+     * @var int
+     */
+    private $Nb = 4;
+
+    /**
+     * The Key Length (in bytes)
+     *
+     * {@internal The max value is 256 / 8 = 32, the min value is 128 / 8 = 16.  Exists in conjunction with $Nk
+     *    because the encryption / decryption / key schedule creation requires this number and not $key_length.  We could
+     *    derive this from $key_length or vice versa, but that'd mean we'd have to do multiple shift operations, so in lieu
+     *    of that, we'll just precompute it once.}
+     *
+     * @see self::setKeyLength()
+     * @var int
+     */
+    protected $key_length = 16;
+
+    /**
+     * The Key Length divided by 32
+     *
+     * @see self::setKeyLength()
+     * @var int
+     * @internal The max value is 256 / 32 = 8, the min value is 128 / 32 = 4
+     */
+    private $Nk = 4;
+
+    /**
+     * The Number of Rounds
+     *
+     * {@internal The max value is 14, the min value is 10.}
+     *
+     * @var int
+     */
+    private $Nr;
+
+    /**
+     * Shift offsets
+     *
+     * @var array
+     */
+    private $c;
+
+    /**
+     * Holds the last used key- and block_size information
+     *
+     * @var array
+     */
+    private $kl;
+
+    /**
+     * Default Constructor.
+     *
+     * @param string $mode
+     * @throws \InvalidArgumentException if an invalid / unsupported mode is provided
+     */
+    public function __construct($mode)
+    {
+        parent::__construct($mode);
+
+        if ($this->mode == self::MODE_STREAM) {
+            throw new BadModeException('Block ciphers cannot be ran in stream mode');
+        }
+    }
+
+    /**
+     * Sets the key length.
+     *
+     * Valid key lengths are 128, 160, 192, 224, and 256.
+     *
+     * Note: phpseclib extends Rijndael (and AES) for using 160- and 224-bit keys but they are officially not defined
+     *       and the most (if not all) implementations are not able using 160/224-bit keys but round/pad them up to
+     *       192/256 bits as, for example, mcrypt will do.
+     *
+     *       That said, if you want be compatible with other Rijndael and AES implementations,
+     *       you should not setKeyLength(160) or setKeyLength(224).
+     *
+     * Additional: In case of 160- and 224-bit keys, phpseclib will/can, for that reason, not use
+     *             the mcrypt php extension, even if available.
+     *             This results then in slower encryption.
+     *
+     * @throws \LengthException if the key length is invalid
+     * @param int $length
+     */
+    public function setKeyLength($length)
+    {
+        switch ($length) {
+            case 128:
+            case 160:
+            case 192:
+            case 224:
+            case 256:
+                $this->key_length = $length >> 3;
+                break;
+            default:
+                throw new \LengthException('Key size of ' . $length . ' bits is not supported by this algorithm. Only keys of sizes 128, 160, 192, 224 or 256 bits are supported');
+        }
+
+        parent::setKeyLength($length);
+    }
+
+    /**
+     * Sets the key.
+     *
+     * Rijndael supports five different key lengths
+     *
+     * @see setKeyLength()
+     * @param string $key
+     * @throws \LengthException if the key length isn't supported
+     */
+    public function setKey($key)
+    {
+        switch (strlen($key)) {
+            case 16:
+            case 20:
+            case 24:
+            case 28:
+            case 32:
+                break;
+            default:
+                throw new \LengthException('Key of size ' . strlen($key) . ' not supported by this algorithm. Only keys of sizes 16, 20, 24, 28 or 32 are supported');
+        }
+
+        parent::setKey($key);
+    }
+
+    /**
+     * Sets the block length
+     *
+     * Valid block lengths are 128, 160, 192, 224, and 256.
+     *
+     * @param int $length
+     */
+    public function setBlockLength($length)
+    {
+        switch ($length) {
+            case 128:
+            case 160:
+            case 192:
+            case 224:
+            case 256:
+                break;
+            default:
+                throw new \LengthException('Key size of ' . $length . ' bits is not supported by this algorithm. Only keys of sizes 128, 160, 192, 224 or 256 bits are supported');
+        }
+
+        $this->Nb = $length >> 5;
+        $this->block_size = $length >> 3;
+        $this->changed = $this->nonIVChanged = true;
+        $this->setEngine();
+    }
+
+    /**
+     * Test for engine validity
+     *
+     * This is mainly just a wrapper to set things up for \phpseclib3\Crypt\Common\SymmetricKey::isValidEngine()
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::__construct()
+     * @param int $engine
+     * @return bool
+     */
+    protected function isValidEngineHelper($engine)
+    {
+        switch ($engine) {
+            case self::ENGINE_LIBSODIUM:
+                return function_exists('sodium_crypto_aead_aes256gcm_is_available') &&
+                       sodium_crypto_aead_aes256gcm_is_available() &&
+                       $this->mode == self::MODE_GCM &&
+                       $this->key_length == 32 &&
+                       $this->nonce && strlen($this->nonce) == 12 &&
+                       $this->block_size == 16;
+            case self::ENGINE_OPENSSL_GCM:
+                if (!extension_loaded('openssl')) {
+                    return false;
+                }
+                $methods = openssl_get_cipher_methods();
+                return $this->mode == self::MODE_GCM &&
+                       version_compare(PHP_VERSION, '7.1.0', '>=') &&
+                       in_array('aes-' . $this->getKeyLength() . '-gcm', $methods) &&
+                       $this->block_size == 16;
+            case self::ENGINE_OPENSSL:
+                if ($this->block_size != 16) {
+                    return false;
+                }
+                $this->cipher_name_openssl_ecb = 'aes-' . ($this->key_length << 3) . '-ecb';
+                $this->cipher_name_openssl = 'aes-' . ($this->key_length << 3) . '-' . $this->openssl_translate_mode();
+                break;
+            case self::ENGINE_MCRYPT:
+                $this->cipher_name_mcrypt = 'rijndael-' . ($this->block_size << 3);
+                if ($this->key_length % 8) { // is it a 160/224-bit key?
+                    // mcrypt is not usable for them, only for 128/192/256-bit keys
+                    return false;
+                }
+        }
+
+        return parent::isValidEngineHelper($engine);
+    }
+
+    /**
+     * Encrypts a block
+     *
+     * @param string $in
+     * @return string
+     */
+    protected function encryptBlock($in)
+    {
+        static $tables;
+        if (empty($tables)) {
+            $tables = &$this->getTables();
+        }
+        $t0   = $tables[0];
+        $t1   = $tables[1];
+        $t2   = $tables[2];
+        $t3   = $tables[3];
+        $sbox = $tables[4];
+
+        $state = [];
+        $words = unpack('N*', $in);
+
+        $c = $this->c;
+        $w = $this->w;
+        $Nb = $this->Nb;
+        $Nr = $this->Nr;
+
+        // addRoundKey
+        $wc = $Nb - 1;
+        foreach ($words as $word) {
+            $state[] = $word ^ $w[++$wc];
+        }
+
+        // fips-197.pdf#page=19, "Figure 5. Pseudo Code for the Cipher", states that this loop has four components -
+        // subBytes, shiftRows, mixColumns, and addRoundKey. fips-197.pdf#page=30, "Implementation Suggestions Regarding
+        // Various Platforms" suggests that performs enhanced implementations are described in Rijndael-ammended.pdf.
+        // Rijndael-ammended.pdf#page=20, "Implementation aspects / 32-bit processor", discusses such an optimization.
+        // Unfortunately, the description given there is not quite correct.  Per aes.spec.v316.pdf#page=19 [1],
+        // equation (7.4.7) is supposed to use addition instead of subtraction, so we'll do that here, as well.
+
+        // [1] http://fp.gladman.plus.com/cryptography_technology/rijndael/aes.spec.v316.pdf
+        $temp = [];
+        for ($round = 1; $round < $Nr; ++$round) {
+            $i = 0; // $c[0] == 0
+            $j = $c[1];
+            $k = $c[2];
+            $l = $c[3];
+
+            while ($i < $Nb) {
+                $temp[$i] = $t0[$state[$i] >> 24 & 0x000000FF] ^
+                            $t1[$state[$j] >> 16 & 0x000000FF] ^
+                            $t2[$state[$k] >>  8 & 0x000000FF] ^
+                            $t3[$state[$l]       & 0x000000FF] ^
+                            $w[++$wc];
+                ++$i;
+                $j = ($j + 1) % $Nb;
+                $k = ($k + 1) % $Nb;
+                $l = ($l + 1) % $Nb;
+            }
+            $state = $temp;
+        }
+
+        // subWord
+        for ($i = 0; $i < $Nb; ++$i) {
+            $state[$i] =   $sbox[$state[$i]       & 0x000000FF]        |
+                          ($sbox[$state[$i] >>  8 & 0x000000FF] <<  8) |
+                          ($sbox[$state[$i] >> 16 & 0x000000FF] << 16) |
+                          ($sbox[$state[$i] >> 24 & 0x000000FF] << 24);
+        }
+
+        // shiftRows + addRoundKey
+        $i = 0; // $c[0] == 0
+        $j = $c[1];
+        $k = $c[2];
+        $l = $c[3];
+        while ($i < $Nb) {
+            $temp[$i] = ($state[$i] & intval(0xFF000000)) ^
+                        ($state[$j] & 0x00FF0000) ^
+                        ($state[$k] & 0x0000FF00) ^
+                        ($state[$l] & 0x000000FF) ^
+                         $w[$i];
+            ++$i;
+            $j = ($j + 1) % $Nb;
+            $k = ($k + 1) % $Nb;
+            $l = ($l + 1) % $Nb;
+        }
+
+        return pack('N*', ...$temp);
+    }
+
+    /**
+     * Decrypts a block
+     *
+     * @param string $in
+     * @return string
+     */
+    protected function decryptBlock($in)
+    {
+        static $invtables;
+        if (empty($invtables)) {
+            $invtables = &$this->getInvTables();
+        }
+        $dt0   = $invtables[0];
+        $dt1   = $invtables[1];
+        $dt2   = $invtables[2];
+        $dt3   = $invtables[3];
+        $isbox = $invtables[4];
+
+        $state = [];
+        $words = unpack('N*', $in);
+
+        $c  = $this->c;
+        $dw = $this->dw;
+        $Nb = $this->Nb;
+        $Nr = $this->Nr;
+
+        // addRoundKey
+        $wc = $Nb - 1;
+        foreach ($words as $word) {
+            $state[] = $word ^ $dw[++$wc];
+        }
+
+        $temp = [];
+        for ($round = $Nr - 1; $round > 0; --$round) {
+            $i = 0; // $c[0] == 0
+            $j = $Nb - $c[1];
+            $k = $Nb - $c[2];
+            $l = $Nb - $c[3];
+
+            while ($i < $Nb) {
+                $temp[$i] = $dt0[$state[$i] >> 24 & 0x000000FF] ^
+                            $dt1[$state[$j] >> 16 & 0x000000FF] ^
+                            $dt2[$state[$k] >>  8 & 0x000000FF] ^
+                            $dt3[$state[$l]       & 0x000000FF] ^
+                            $dw[++$wc];
+                ++$i;
+                $j = ($j + 1) % $Nb;
+                $k = ($k + 1) % $Nb;
+                $l = ($l + 1) % $Nb;
+            }
+            $state = $temp;
+        }
+
+        // invShiftRows + invSubWord + addRoundKey
+        $i = 0; // $c[0] == 0
+        $j = $Nb - $c[1];
+        $k = $Nb - $c[2];
+        $l = $Nb - $c[3];
+
+        while ($i < $Nb) {
+            $word = ($state[$i] & intval(0xFF000000)) |
+                    ($state[$j] & 0x00FF0000) |
+                    ($state[$k] & 0x0000FF00) |
+                    ($state[$l] & 0x000000FF);
+
+            $temp[$i] = $dw[$i] ^ ($isbox[$word       & 0x000000FF]        |
+                                  ($isbox[$word >>  8 & 0x000000FF] <<  8) |
+                                  ($isbox[$word >> 16 & 0x000000FF] << 16) |
+                                  ($isbox[$word >> 24 & 0x000000FF] << 24));
+            ++$i;
+            $j = ($j + 1) % $Nb;
+            $k = ($k + 1) % $Nb;
+            $l = ($l + 1) % $Nb;
+        }
+
+        return pack('N*', ...$temp);
+    }
+
+    /**
+     * Setup the self::ENGINE_INTERNAL $engine
+     *
+     * (re)init, if necessary, the internal cipher $engine and flush all $buffers
+     * Used (only) if $engine == self::ENGINE_INTERNAL
+     *
+     * _setup() will be called each time if $changed === true
+     * typically this happens when using one or more of following public methods:
+     *
+     * - setKey()
+     *
+     * - setIV()
+     *
+     * - disableContinuousBuffer()
+     *
+     * - First run of encrypt() / decrypt() with no init-settings
+     *
+     * {@internal setup() is always called before en/decryption.}
+     *
+     * {@internal Could, but not must, extend by the child Crypt_* class}
+     *
+     * @see self::setKey()
+     * @see self::setIV()
+     * @see self::disableContinuousBuffer()
+     */
+    protected function setup()
+    {
+        if (!$this->changed) {
+            return;
+        }
+
+        parent::setup();
+
+        if (is_string($this->iv) && strlen($this->iv) != $this->block_size) {
+            throw new InconsistentSetupException('The IV length (' . strlen($this->iv) . ') does not match the block size (' . $this->block_size . ')');
+        }
+    }
+
+    /**
+     * Setup the key (expansion)
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::setupKey()
+     */
+    protected function setupKey()
+    {
+        // Each number in $rcon is equal to the previous number multiplied by two in Rijndael's finite field.
+        // See http://en.wikipedia.org/wiki/Finite_field_arithmetic#Multiplicative_inverse
+        static $rcon;
+
+        if (!isset($rcon)) {
+            $rcon = [0,
+                0x01000000, 0x02000000, 0x04000000, 0x08000000, 0x10000000,
+                0x20000000, 0x40000000, 0x80000000, 0x1B000000, 0x36000000,
+                0x6C000000, 0xD8000000, 0xAB000000, 0x4D000000, 0x9A000000,
+                0x2F000000, 0x5E000000, 0xBC000000, 0x63000000, 0xC6000000,
+                0x97000000, 0x35000000, 0x6A000000, 0xD4000000, 0xB3000000,
+                0x7D000000, 0xFA000000, 0xEF000000, 0xC5000000, 0x91000000
+            ];
+            $rcon = array_map('intval', $rcon);
+        }
+
+        if (isset($this->kl['key']) && $this->key === $this->kl['key'] && $this->key_length === $this->kl['key_length'] && $this->block_size === $this->kl['block_size']) {
+            // already expanded
+            return;
+        }
+        $this->kl = ['key' => $this->key, 'key_length' => $this->key_length, 'block_size' => $this->block_size];
+
+        $this->Nk = $this->key_length >> 2;
+        // see Rijndael-ammended.pdf#page=44
+        $this->Nr = max($this->Nk, $this->Nb) + 6;
+
+        // shift offsets for Nb = 5, 7 are defined in Rijndael-ammended.pdf#page=44,
+        //     "Table 8: Shift offsets in Shiftrow for the alternative block lengths"
+        // shift offsets for Nb = 4, 6, 8 are defined in Rijndael-ammended.pdf#page=14,
+        //     "Table 2: Shift offsets for different block lengths"
+        switch ($this->Nb) {
+            case 4:
+            case 5:
+            case 6:
+                $this->c = [0, 1, 2, 3];
+                break;
+            case 7:
+                $this->c = [0, 1, 2, 4];
+                break;
+            case 8:
+                $this->c = [0, 1, 3, 4];
+        }
+
+        $w = array_values(unpack('N*words', $this->key));
+
+        $length = $this->Nb * ($this->Nr + 1);
+        for ($i = $this->Nk; $i < $length; $i++) {
+            $temp = $w[$i - 1];
+            if ($i % $this->Nk == 0) {
+                // according to <http://php.net/language.types.integer>, "the size of an integer is platform-dependent".
+                // on a 32-bit machine, it's 32-bits, and on a 64-bit machine, it's 64-bits. on a 32-bit machine,
+                // 0xFFFFFFFF << 8 == 0xFFFFFF00, but on a 64-bit machine, it equals 0xFFFFFFFF00. as such, doing 'and'
+                // with 0xFFFFFFFF (or 0xFFFFFF00) on a 32-bit machine is unnecessary, but on a 64-bit machine, it is.
+                $temp = (($temp << 8) & intval(0xFFFFFF00)) | (($temp >> 24) & 0x000000FF); // rotWord
+                $temp = $this->subWord($temp) ^ $rcon[$i / $this->Nk];
+            } elseif ($this->Nk > 6 && $i % $this->Nk == 4) {
+                $temp = $this->subWord($temp);
+            }
+            $w[$i] = $w[$i - $this->Nk] ^ $temp;
+        }
+
+        // convert the key schedule from a vector of $Nb * ($Nr + 1) length to a matrix with $Nr + 1 rows and $Nb columns
+        // and generate the inverse key schedule.  more specifically,
+        // according to <http://csrc.nist.gov/archive/aes/rijndael/Rijndael-ammended.pdf#page=23> (section 5.3.3),
+        // "The key expansion for the Inverse Cipher is defined as follows:
+        //        1. Apply the Key Expansion.
+        //        2. Apply InvMixColumn to all Round Keys except the first and the last one."
+        // also, see fips-197.pdf#page=27, "5.3.5 Equivalent Inverse Cipher"
+        list($dt0, $dt1, $dt2, $dt3) = $this->getInvTables();
+        $temp = $this->w = $this->dw = [];
+        for ($i = $row = $col = 0; $i < $length; $i++, $col++) {
+            if ($col == $this->Nb) {
+                if ($row == 0) {
+                    $this->dw[0] = $this->w[0];
+                } else {
+                    // subWord + invMixColumn + invSubWord = invMixColumn
+                    $j = 0;
+                    while ($j < $this->Nb) {
+                        $dw = $this->subWord($this->w[$row][$j]);
+                        $temp[$j] = $dt0[$dw >> 24 & 0x000000FF] ^
+                                    $dt1[$dw >> 16 & 0x000000FF] ^
+                                    $dt2[$dw >>  8 & 0x000000FF] ^
+                                    $dt3[$dw       & 0x000000FF];
+                        $j++;
+                    }
+                    $this->dw[$row] = $temp;
+                }
+
+                $col = 0;
+                $row++;
+            }
+            $this->w[$row][$col] = $w[$i];
+        }
+
+        $this->dw[$row] = $this->w[$row];
+
+        // Converting to 1-dim key arrays (both ascending)
+        $this->dw = array_reverse($this->dw);
+        $w  = array_pop($this->w);
+        $dw = array_pop($this->dw);
+        foreach ($this->w as $r => $wr) {
+            foreach ($wr as $c => $wc) {
+                $w[]  = $wc;
+                $dw[] = $this->dw[$r][$c];
+            }
+        }
+        $this->w  = $w;
+        $this->dw = $dw;
+    }
+
+    /**
+     * Performs S-Box substitutions
+     *
+     * @return array
+     * @param int $word
+     */
+    private function subWord($word)
+    {
+        static $sbox;
+        if (empty($sbox)) {
+            list(, , , , $sbox) = self::getTables();
+        }
+
+        return  $sbox[$word       & 0x000000FF]        |
+               ($sbox[$word >>  8 & 0x000000FF] <<  8) |
+               ($sbox[$word >> 16 & 0x000000FF] << 16) |
+               ($sbox[$word >> 24 & 0x000000FF] << 24);
+    }
+
+    /**
+     * Provides the mixColumns and sboxes tables
+     *
+     * @see self::encryptBlock()
+     * @see self::setupInlineCrypt()
+     * @see self::subWord()
+     * @return array &$tables
+     */
+    protected function &getTables()
+    {
+        static $tables;
+        if (empty($tables)) {
+            // according to <http://csrc.nist.gov/archive/aes/rijndael/Rijndael-ammended.pdf#page=19> (section 5.2.1),
+            // precomputed tables can be used in the mixColumns phase. in that example, they're assigned t0...t3, so
+            // those are the names we'll use.
+            $t3 = array_map('intval', [
+                // with array_map('intval', ...) we ensure we have only int's and not
+                // some slower floats converted by php automatically on high values
+                0x6363A5C6, 0x7C7C84F8, 0x777799EE, 0x7B7B8DF6, 0xF2F20DFF, 0x6B6BBDD6, 0x6F6FB1DE, 0xC5C55491,
+                0x30305060, 0x01010302, 0x6767A9CE, 0x2B2B7D56, 0xFEFE19E7, 0xD7D762B5, 0xABABE64D, 0x76769AEC,
+                0xCACA458F, 0x82829D1F, 0xC9C94089, 0x7D7D87FA, 0xFAFA15EF, 0x5959EBB2, 0x4747C98E, 0xF0F00BFB,
+                0xADADEC41, 0xD4D467B3, 0xA2A2FD5F, 0xAFAFEA45, 0x9C9CBF23, 0xA4A4F753, 0x727296E4, 0xC0C05B9B,
+                0xB7B7C275, 0xFDFD1CE1, 0x9393AE3D, 0x26266A4C, 0x36365A6C, 0x3F3F417E, 0xF7F702F5, 0xCCCC4F83,
+                0x34345C68, 0xA5A5F451, 0xE5E534D1, 0xF1F108F9, 0x717193E2, 0xD8D873AB, 0x31315362, 0x15153F2A,
+                0x04040C08, 0xC7C75295, 0x23236546, 0xC3C35E9D, 0x18182830, 0x9696A137, 0x05050F0A, 0x9A9AB52F,
+                0x0707090E, 0x12123624, 0x80809B1B, 0xE2E23DDF, 0xEBEB26CD, 0x2727694E, 0xB2B2CD7F, 0x75759FEA,
+                0x09091B12, 0x83839E1D, 0x2C2C7458, 0x1A1A2E34, 0x1B1B2D36, 0x6E6EB2DC, 0x5A5AEEB4, 0xA0A0FB5B,
+                0x5252F6A4, 0x3B3B4D76, 0xD6D661B7, 0xB3B3CE7D, 0x29297B52, 0xE3E33EDD, 0x2F2F715E, 0x84849713,
+                0x5353F5A6, 0xD1D168B9, 0x00000000, 0xEDED2CC1, 0x20206040, 0xFCFC1FE3, 0xB1B1C879, 0x5B5BEDB6,
+                0x6A6ABED4, 0xCBCB468D, 0xBEBED967, 0x39394B72, 0x4A4ADE94, 0x4C4CD498, 0x5858E8B0, 0xCFCF4A85,
+                0xD0D06BBB, 0xEFEF2AC5, 0xAAAAE54F, 0xFBFB16ED, 0x4343C586, 0x4D4DD79A, 0x33335566, 0x85859411,
+                0x4545CF8A, 0xF9F910E9, 0x02020604, 0x7F7F81FE, 0x5050F0A0, 0x3C3C4478, 0x9F9FBA25, 0xA8A8E34B,
+                0x5151F3A2, 0xA3A3FE5D, 0x4040C080, 0x8F8F8A05, 0x9292AD3F, 0x9D9DBC21, 0x38384870, 0xF5F504F1,
+                0xBCBCDF63, 0xB6B6C177, 0xDADA75AF, 0x21216342, 0x10103020, 0xFFFF1AE5, 0xF3F30EFD, 0xD2D26DBF,
+                0xCDCD4C81, 0x0C0C1418, 0x13133526, 0xECEC2FC3, 0x5F5FE1BE, 0x9797A235, 0x4444CC88, 0x1717392E,
+                0xC4C45793, 0xA7A7F255, 0x7E7E82FC, 0x3D3D477A, 0x6464ACC8, 0x5D5DE7BA, 0x19192B32, 0x737395E6,
+                0x6060A0C0, 0x81819819, 0x4F4FD19E, 0xDCDC7FA3, 0x22226644, 0x2A2A7E54, 0x9090AB3B, 0x8888830B,
+                0x4646CA8C, 0xEEEE29C7, 0xB8B8D36B, 0x14143C28, 0xDEDE79A7, 0x5E5EE2BC, 0x0B0B1D16, 0xDBDB76AD,
+                0xE0E03BDB, 0x32325664, 0x3A3A4E74, 0x0A0A1E14, 0x4949DB92, 0x06060A0C, 0x24246C48, 0x5C5CE4B8,
+                0xC2C25D9F, 0xD3D36EBD, 0xACACEF43, 0x6262A6C4, 0x9191A839, 0x9595A431, 0xE4E437D3, 0x79798BF2,
+                0xE7E732D5, 0xC8C8438B, 0x3737596E, 0x6D6DB7DA, 0x8D8D8C01, 0xD5D564B1, 0x4E4ED29C, 0xA9A9E049,
+                0x6C6CB4D8, 0x5656FAAC, 0xF4F407F3, 0xEAEA25CF, 0x6565AFCA, 0x7A7A8EF4, 0xAEAEE947, 0x08081810,
+                0xBABAD56F, 0x787888F0, 0x25256F4A, 0x2E2E725C, 0x1C1C2438, 0xA6A6F157, 0xB4B4C773, 0xC6C65197,
+                0xE8E823CB, 0xDDDD7CA1, 0x74749CE8, 0x1F1F213E, 0x4B4BDD96, 0xBDBDDC61, 0x8B8B860D, 0x8A8A850F,
+                0x707090E0, 0x3E3E427C, 0xB5B5C471, 0x6666AACC, 0x4848D890, 0x03030506, 0xF6F601F7, 0x0E0E121C,
+                0x6161A3C2, 0x35355F6A, 0x5757F9AE, 0xB9B9D069, 0x86869117, 0xC1C15899, 0x1D1D273A, 0x9E9EB927,
+                0xE1E138D9, 0xF8F813EB, 0x9898B32B, 0x11113322, 0x6969BBD2, 0xD9D970A9, 0x8E8E8907, 0x9494A733,
+                0x9B9BB62D, 0x1E1E223C, 0x87879215, 0xE9E920C9, 0xCECE4987, 0x5555FFAA, 0x28287850, 0xDFDF7AA5,
+                0x8C8C8F03, 0xA1A1F859, 0x89898009, 0x0D0D171A, 0xBFBFDA65, 0xE6E631D7, 0x4242C684, 0x6868B8D0,
+                0x4141C382, 0x9999B029, 0x2D2D775A, 0x0F0F111E, 0xB0B0CB7B, 0x5454FCA8, 0xBBBBD66D, 0x16163A2C
+            ]);
+
+            foreach ($t3 as $t3i) {
+                $t0[] = (($t3i << 24) & intval(0xFF000000)) | (($t3i >>  8) & 0x00FFFFFF);
+                $t1[] = (($t3i << 16) & intval(0xFFFF0000)) | (($t3i >> 16) & 0x0000FFFF);
+                $t2[] = (($t3i <<  8) & intval(0xFFFFFF00)) | (($t3i >> 24) & 0x000000FF);
+            }
+
+            $tables = [
+                // The Precomputed mixColumns tables t0 - t3
+                $t0,
+                $t1,
+                $t2,
+                $t3,
+                // The SubByte S-Box
+                [
+                    0x63, 0x7C, 0x77, 0x7B, 0xF2, 0x6B, 0x6F, 0xC5, 0x30, 0x01, 0x67, 0x2B, 0xFE, 0xD7, 0xAB, 0x76,
+                    0xCA, 0x82, 0xC9, 0x7D, 0xFA, 0x59, 0x47, 0xF0, 0xAD, 0xD4, 0xA2, 0xAF, 0x9C, 0xA4, 0x72, 0xC0,
+                    0xB7, 0xFD, 0x93, 0x26, 0x36, 0x3F, 0xF7, 0xCC, 0x34, 0xA5, 0xE5, 0xF1, 0x71, 0xD8, 0x31, 0x15,
+                    0x04, 0xC7, 0x23, 0xC3, 0x18, 0x96, 0x05, 0x9A, 0x07, 0x12, 0x80, 0xE2, 0xEB, 0x27, 0xB2, 0x75,
+                    0x09, 0x83, 0x2C, 0x1A, 0x1B, 0x6E, 0x5A, 0xA0, 0x52, 0x3B, 0xD6, 0xB3, 0x29, 0xE3, 0x2F, 0x84,
+                    0x53, 0xD1, 0x00, 0xED, 0x20, 0xFC, 0xB1, 0x5B, 0x6A, 0xCB, 0xBE, 0x39, 0x4A, 0x4C, 0x58, 0xCF,
+                    0xD0, 0xEF, 0xAA, 0xFB, 0x43, 0x4D, 0x33, 0x85, 0x45, 0xF9, 0x02, 0x7F, 0x50, 0x3C, 0x9F, 0xA8,
+                    0x51, 0xA3, 0x40, 0x8F, 0x92, 0x9D, 0x38, 0xF5, 0xBC, 0xB6, 0xDA, 0x21, 0x10, 0xFF, 0xF3, 0xD2,
+                    0xCD, 0x0C, 0x13, 0xEC, 0x5F, 0x97, 0x44, 0x17, 0xC4, 0xA7, 0x7E, 0x3D, 0x64, 0x5D, 0x19, 0x73,
+                    0x60, 0x81, 0x4F, 0xDC, 0x22, 0x2A, 0x90, 0x88, 0x46, 0xEE, 0xB8, 0x14, 0xDE, 0x5E, 0x0B, 0xDB,
+                    0xE0, 0x32, 0x3A, 0x0A, 0x49, 0x06, 0x24, 0x5C, 0xC2, 0xD3, 0xAC, 0x62, 0x91, 0x95, 0xE4, 0x79,
+                    0xE7, 0xC8, 0x37, 0x6D, 0x8D, 0xD5, 0x4E, 0xA9, 0x6C, 0x56, 0xF4, 0xEA, 0x65, 0x7A, 0xAE, 0x08,
+                    0xBA, 0x78, 0x25, 0x2E, 0x1C, 0xA6, 0xB4, 0xC6, 0xE8, 0xDD, 0x74, 0x1F, 0x4B, 0xBD, 0x8B, 0x8A,
+                    0x70, 0x3E, 0xB5, 0x66, 0x48, 0x03, 0xF6, 0x0E, 0x61, 0x35, 0x57, 0xB9, 0x86, 0xC1, 0x1D, 0x9E,
+                    0xE1, 0xF8, 0x98, 0x11, 0x69, 0xD9, 0x8E, 0x94, 0x9B, 0x1E, 0x87, 0xE9, 0xCE, 0x55, 0x28, 0xDF,
+                    0x8C, 0xA1, 0x89, 0x0D, 0xBF, 0xE6, 0x42, 0x68, 0x41, 0x99, 0x2D, 0x0F, 0xB0, 0x54, 0xBB, 0x16
+                ]
+            ];
+        }
+        return $tables;
+    }
+
+    /**
+     * Provides the inverse mixColumns and inverse sboxes tables
+     *
+     * @see self::decryptBlock()
+     * @see self::setupInlineCrypt()
+     * @see self::setupKey()
+     * @return array &$tables
+     */
+    protected function &getInvTables()
+    {
+        static $tables;
+        if (empty($tables)) {
+            $dt3 = array_map('intval', [
+                0xF4A75051, 0x4165537E, 0x17A4C31A, 0x275E963A, 0xAB6BCB3B, 0x9D45F11F, 0xFA58ABAC, 0xE303934B,
+                0x30FA5520, 0x766DF6AD, 0xCC769188, 0x024C25F5, 0xE5D7FC4F, 0x2ACBD7C5, 0x35448026, 0x62A38FB5,
+                0xB15A49DE, 0xBA1B6725, 0xEA0E9845, 0xFEC0E15D, 0x2F7502C3, 0x4CF01281, 0x4697A38D, 0xD3F9C66B,
+                0x8F5FE703, 0x929C9515, 0x6D7AEBBF, 0x5259DA95, 0xBE832DD4, 0x7421D358, 0xE0692949, 0xC9C8448E,
+                0xC2896A75, 0x8E7978F4, 0x583E6B99, 0xB971DD27, 0xE14FB6BE, 0x88AD17F0, 0x20AC66C9, 0xCE3AB47D,
+                0xDF4A1863, 0x1A3182E5, 0x51336097, 0x537F4562, 0x6477E0B1, 0x6BAE84BB, 0x81A01CFE, 0x082B94F9,
+                0x48685870, 0x45FD198F, 0xDE6C8794, 0x7BF8B752, 0x73D323AB, 0x4B02E272, 0x1F8F57E3, 0x55AB2A66,
+                0xEB2807B2, 0xB5C2032F, 0xC57B9A86, 0x3708A5D3, 0x2887F230, 0xBFA5B223, 0x036ABA02, 0x16825CED,
+                0xCF1C2B8A, 0x79B492A7, 0x07F2F0F3, 0x69E2A14E, 0xDAF4CD65, 0x05BED506, 0x34621FD1, 0xA6FE8AC4,
+                0x2E539D34, 0xF355A0A2, 0x8AE13205, 0xF6EB75A4, 0x83EC390B, 0x60EFAA40, 0x719F065E, 0x6E1051BD,
+                0x218AF93E, 0xDD063D96, 0x3E05AEDD, 0xE6BD464D, 0x548DB591, 0xC45D0571, 0x06D46F04, 0x5015FF60,
+                0x98FB2419, 0xBDE997D6, 0x4043CC89, 0xD99E7767, 0xE842BDB0, 0x898B8807, 0x195B38E7, 0xC8EEDB79,
+                0x7C0A47A1, 0x420FE97C, 0x841EC9F8, 0x00000000, 0x80868309, 0x2BED4832, 0x1170AC1E, 0x5A724E6C,
+                0x0EFFFBFD, 0x8538560F, 0xAED51E3D, 0x2D392736, 0x0FD9640A, 0x5CA62168, 0x5B54D19B, 0x362E3A24,
+                0x0A67B10C, 0x57E70F93, 0xEE96D2B4, 0x9B919E1B, 0xC0C54F80, 0xDC20A261, 0x774B695A, 0x121A161C,
+                0x93BA0AE2, 0xA02AE5C0, 0x22E0433C, 0x1B171D12, 0x090D0B0E, 0x8BC7ADF2, 0xB6A8B92D, 0x1EA9C814,
+                0xF1198557, 0x75074CAF, 0x99DDBBEE, 0x7F60FDA3, 0x01269FF7, 0x72F5BC5C, 0x663BC544, 0xFB7E345B,
+                0x4329768B, 0x23C6DCCB, 0xEDFC68B6, 0xE4F163B8, 0x31DCCAD7, 0x63851042, 0x97224013, 0xC6112084,
+                0x4A247D85, 0xBB3DF8D2, 0xF93211AE, 0x29A16DC7, 0x9E2F4B1D, 0xB230F3DC, 0x8652EC0D, 0xC1E3D077,
+                0xB3166C2B, 0x70B999A9, 0x9448FA11, 0xE9642247, 0xFC8CC4A8, 0xF03F1AA0, 0x7D2CD856, 0x3390EF22,
+                0x494EC787, 0x38D1C1D9, 0xCAA2FE8C, 0xD40B3698, 0xF581CFA6, 0x7ADE28A5, 0xB78E26DA, 0xADBFA43F,
+                0x3A9DE42C, 0x78920D50, 0x5FCC9B6A, 0x7E466254, 0x8D13C2F6, 0xD8B8E890, 0x39F75E2E, 0xC3AFF582,
+                0x5D80BE9F, 0xD0937C69, 0xD52DA96F, 0x2512B3CF, 0xAC993BC8, 0x187DA710, 0x9C636EE8, 0x3BBB7BDB,
+                0x267809CD, 0x5918F46E, 0x9AB701EC, 0x4F9AA883, 0x956E65E6, 0xFFE67EAA, 0xBCCF0821, 0x15E8E6EF,
+                0xE79BD9BA, 0x6F36CE4A, 0x9F09D4EA, 0xB07CD629, 0xA4B2AF31, 0x3F23312A, 0xA59430C6, 0xA266C035,
+                0x4EBC3774, 0x82CAA6FC, 0x90D0B0E0, 0xA7D81533, 0x04984AF1, 0xECDAF741, 0xCD500E7F, 0x91F62F17,
+                0x4DD68D76, 0xEFB04D43, 0xAA4D54CC, 0x9604DFE4, 0xD1B5E39E, 0x6A881B4C, 0x2C1FB8C1, 0x65517F46,
+                0x5EEA049D, 0x8C355D01, 0x877473FA, 0x0B412EFB, 0x671D5AB3, 0xDBD25292, 0x105633E9, 0xD647136D,
+                0xD7618C9A, 0xA10C7A37, 0xF8148E59, 0x133C89EB, 0xA927EECE, 0x61C935B7, 0x1CE5EDE1, 0x47B13C7A,
+                0xD2DF599C, 0xF2733F55, 0x14CE7918, 0xC737BF73, 0xF7CDEA53, 0xFDAA5B5F, 0x3D6F14DF, 0x44DB8678,
+                0xAFF381CA, 0x68C43EB9, 0x24342C38, 0xA3405FC2, 0x1DC37216, 0xE2250CBC, 0x3C498B28, 0x0D9541FF,
+                0xA8017139, 0x0CB3DE08, 0xB4E49CD8, 0x56C19064, 0xCB84617B, 0x32B670D5, 0x6C5C7448, 0xB85742D0
+            ]);
+
+            foreach ($dt3 as $dt3i) {
+                $dt0[] = (($dt3i << 24) & intval(0xFF000000)) | (($dt3i >>  8) & 0x00FFFFFF);
+                $dt1[] = (($dt3i << 16) & intval(0xFFFF0000)) | (($dt3i >> 16) & 0x0000FFFF);
+                $dt2[] = (($dt3i <<  8) & intval(0xFFFFFF00)) | (($dt3i >> 24) & 0x000000FF);
+            };
+
+            $tables = [
+                // The Precomputed inverse mixColumns tables dt0 - dt3
+                $dt0,
+                $dt1,
+                $dt2,
+                $dt3,
+                // The inverse SubByte S-Box
+                [
+                    0x52, 0x09, 0x6A, 0xD5, 0x30, 0x36, 0xA5, 0x38, 0xBF, 0x40, 0xA3, 0x9E, 0x81, 0xF3, 0xD7, 0xFB,
+                    0x7C, 0xE3, 0x39, 0x82, 0x9B, 0x2F, 0xFF, 0x87, 0x34, 0x8E, 0x43, 0x44, 0xC4, 0xDE, 0xE9, 0xCB,
+                    0x54, 0x7B, 0x94, 0x32, 0xA6, 0xC2, 0x23, 0x3D, 0xEE, 0x4C, 0x95, 0x0B, 0x42, 0xFA, 0xC3, 0x4E,
+                    0x08, 0x2E, 0xA1, 0x66, 0x28, 0xD9, 0x24, 0xB2, 0x76, 0x5B, 0xA2, 0x49, 0x6D, 0x8B, 0xD1, 0x25,
+                    0x72, 0xF8, 0xF6, 0x64, 0x86, 0x68, 0x98, 0x16, 0xD4, 0xA4, 0x5C, 0xCC, 0x5D, 0x65, 0xB6, 0x92,
+                    0x6C, 0x70, 0x48, 0x50, 0xFD, 0xED, 0xB9, 0xDA, 0x5E, 0x15, 0x46, 0x57, 0xA7, 0x8D, 0x9D, 0x84,
+                    0x90, 0xD8, 0xAB, 0x00, 0x8C, 0xBC, 0xD3, 0x0A, 0xF7, 0xE4, 0x58, 0x05, 0xB8, 0xB3, 0x45, 0x06,
+                    0xD0, 0x2C, 0x1E, 0x8F, 0xCA, 0x3F, 0x0F, 0x02, 0xC1, 0xAF, 0xBD, 0x03, 0x01, 0x13, 0x8A, 0x6B,
+                    0x3A, 0x91, 0x11, 0x41, 0x4F, 0x67, 0xDC, 0xEA, 0x97, 0xF2, 0xCF, 0xCE, 0xF0, 0xB4, 0xE6, 0x73,
+                    0x96, 0xAC, 0x74, 0x22, 0xE7, 0xAD, 0x35, 0x85, 0xE2, 0xF9, 0x37, 0xE8, 0x1C, 0x75, 0xDF, 0x6E,
+                    0x47, 0xF1, 0x1A, 0x71, 0x1D, 0x29, 0xC5, 0x89, 0x6F, 0xB7, 0x62, 0x0E, 0xAA, 0x18, 0xBE, 0x1B,
+                    0xFC, 0x56, 0x3E, 0x4B, 0xC6, 0xD2, 0x79, 0x20, 0x9A, 0xDB, 0xC0, 0xFE, 0x78, 0xCD, 0x5A, 0xF4,
+                    0x1F, 0xDD, 0xA8, 0x33, 0x88, 0x07, 0xC7, 0x31, 0xB1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xEC, 0x5F,
+                    0x60, 0x51, 0x7F, 0xA9, 0x19, 0xB5, 0x4A, 0x0D, 0x2D, 0xE5, 0x7A, 0x9F, 0x93, 0xC9, 0x9C, 0xEF,
+                    0xA0, 0xE0, 0x3B, 0x4D, 0xAE, 0x2A, 0xF5, 0xB0, 0xC8, 0xEB, 0xBB, 0x3C, 0x83, 0x53, 0x99, 0x61,
+                    0x17, 0x2B, 0x04, 0x7E, 0xBA, 0x77, 0xD6, 0x26, 0xE1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0C, 0x7D
+                ]
+            ];
+        }
+        return $tables;
+    }
+
+    /**
+     * Setup the performance-optimized function for de/encrypt()
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::setupInlineCrypt()
+     */
+    protected function setupInlineCrypt()
+    {
+        $w  = $this->w;
+        $dw = $this->dw;
+        $init_encrypt = '';
+        $init_decrypt = '';
+
+        $Nr = $this->Nr;
+        $Nb = $this->Nb;
+        $c  = $this->c;
+
+        // Generating encrypt code:
+        $init_encrypt .= '
+            if (empty($tables)) {
+                $tables = &$this->getTables();
+            }
+            $t0   = $tables[0];
+            $t1   = $tables[1];
+            $t2   = $tables[2];
+            $t3   = $tables[3];
+            $sbox = $tables[4];
+        ';
+
+        $s  = 'e';
+        $e  = 's';
+        $wc = $Nb - 1;
+
+        // Preround: addRoundKey
+        $encrypt_block = '$in = unpack("N*", $in);' . "\n";
+        for ($i = 0; $i < $Nb; ++$i) {
+            $encrypt_block .= '$s' . $i . ' = $in[' . ($i + 1) . '] ^ ' . $w[++$wc] . ";\n";
+        }
+
+        // Mainrounds: shiftRows + subWord + mixColumns + addRoundKey
+        for ($round = 1; $round < $Nr; ++$round) {
+            list($s, $e) = [$e, $s];
+            for ($i = 0; $i < $Nb; ++$i) {
+                $encrypt_block .=
+                    '$' . $e . $i . ' =
+                    $t0[($' . $s . $i                  . ' >> 24) & 0xff] ^
+                    $t1[($' . $s . (($i + $c[1]) % $Nb) . ' >> 16) & 0xff] ^
+                    $t2[($' . $s . (($i + $c[2]) % $Nb) . ' >>  8) & 0xff] ^
+                    $t3[ $' . $s . (($i + $c[3]) % $Nb) . '        & 0xff] ^
+                    ' . $w[++$wc] . ";\n";
+            }
+        }
+
+        // Finalround: subWord + shiftRows + addRoundKey
+        for ($i = 0; $i < $Nb; ++$i) {
+            $encrypt_block .=
+                '$' . $e . $i . ' =
+                 $sbox[ $' . $e . $i . '        & 0xff]        |
+                ($sbox[($' . $e . $i . ' >>  8) & 0xff] <<  8) |
+                ($sbox[($' . $e . $i . ' >> 16) & 0xff] << 16) |
+                ($sbox[($' . $e . $i . ' >> 24) & 0xff] << 24);' . "\n";
+        }
+        $encrypt_block .= '$in = pack("N*"' . "\n";
+        for ($i = 0; $i < $Nb; ++$i) {
+            $encrypt_block .= ',
+                ($' . $e . $i                  . ' & ' . ((int)0xFF000000) . ') ^
+                ($' . $e . (($i + $c[1]) % $Nb) . ' &         0x00FF0000   ) ^
+                ($' . $e . (($i + $c[2]) % $Nb) . ' &         0x0000FF00   ) ^
+                ($' . $e . (($i + $c[3]) % $Nb) . ' &         0x000000FF   ) ^
+                ' . $w[$i] . "\n";
+        }
+        $encrypt_block .= ');';
+
+        // Generating decrypt code:
+        $init_decrypt .= '
+            if (empty($invtables)) {
+                $invtables = &$this->getInvTables();
+            }
+            $dt0   = $invtables[0];
+            $dt1   = $invtables[1];
+            $dt2   = $invtables[2];
+            $dt3   = $invtables[3];
+            $isbox = $invtables[4];
+        ';
+
+        $s  = 'e';
+        $e  = 's';
+        $wc = $Nb - 1;
+
+        // Preround: addRoundKey
+        $decrypt_block = '$in = unpack("N*", $in);' . "\n";
+        for ($i = 0; $i < $Nb; ++$i) {
+            $decrypt_block .= '$s' . $i . ' = $in[' . ($i + 1) . '] ^ ' . $dw[++$wc] . ';' . "\n";
+        }
+
+        // Mainrounds: shiftRows + subWord + mixColumns + addRoundKey
+        for ($round = 1; $round < $Nr; ++$round) {
+            list($s, $e) = [$e, $s];
+            for ($i = 0; $i < $Nb; ++$i) {
+                $decrypt_block .=
+                    '$' . $e . $i . ' =
+                    $dt0[($' . $s . $i                        . ' >> 24) & 0xff] ^
+                    $dt1[($' . $s . (($Nb + $i - $c[1]) % $Nb) . ' >> 16) & 0xff] ^
+                    $dt2[($' . $s . (($Nb + $i - $c[2]) % $Nb) . ' >>  8) & 0xff] ^
+                    $dt3[ $' . $s . (($Nb + $i - $c[3]) % $Nb) . '        & 0xff] ^
+                    ' . $dw[++$wc] . ";\n";
+            }
+        }
+
+        // Finalround: subWord + shiftRows + addRoundKey
+        for ($i = 0; $i < $Nb; ++$i) {
+            $decrypt_block .=
+                '$' . $e . $i . ' =
+                 $isbox[ $' . $e . $i . '        & 0xff]        |
+                ($isbox[($' . $e . $i . ' >>  8) & 0xff] <<  8) |
+                ($isbox[($' . $e . $i . ' >> 16) & 0xff] << 16) |
+                ($isbox[($' . $e . $i . ' >> 24) & 0xff] << 24);' . "\n";
+        }
+        $decrypt_block .= '$in = pack("N*"' . "\n";
+        for ($i = 0; $i < $Nb; ++$i) {
+            $decrypt_block .= ',
+                ($' . $e . $i .                        ' & ' . ((int)0xFF000000) . ') ^
+                ($' . $e . (($Nb + $i - $c[1]) % $Nb) . ' &         0x00FF0000   ) ^
+                ($' . $e . (($Nb + $i - $c[2]) % $Nb) . ' &         0x0000FF00   ) ^
+                ($' . $e . (($Nb + $i - $c[3]) % $Nb) . ' &         0x000000FF   ) ^
+                ' . $dw[$i] . "\n";
+        }
+        $decrypt_block .= ');';
+
+        $this->inline_crypt = $this->createInlineCryptFunction(
+            [
+               'init_crypt'    => 'static $tables; static $invtables;',
+               'init_encrypt'  => $init_encrypt,
+               'init_decrypt'  => $init_decrypt,
+               'encrypt_block' => $encrypt_block,
+               'decrypt_block' => $decrypt_block
+            ]
+        );
+    }
+
+    /**
+     * Encrypts a message.
+     *
+     * @see self::decrypt()
+     * @see parent::encrypt()
+     * @param string $plaintext
+     * @return string
+     */
+    public function encrypt($plaintext)
+    {
+        $this->setup();
+
+        switch ($this->engine) {
+            case self::ENGINE_LIBSODIUM:
+                $this->newtag = sodium_crypto_aead_aes256gcm_encrypt($plaintext, $this->aad, $this->nonce, $this->key);
+                return Strings::shift($this->newtag, strlen($plaintext));
+            case self::ENGINE_OPENSSL_GCM:
+                return openssl_encrypt(
+                    $plaintext,
+                    'aes-' . $this->getKeyLength() . '-gcm',
+                    $this->key,
+                    OPENSSL_RAW_DATA,
+                    $this->nonce,
+                    $this->newtag,
+                    $this->aad
+                );
+        }
+
+        return parent::encrypt($plaintext);
+    }
+
+    /**
+     * Decrypts a message.
+     *
+     * @see self::encrypt()
+     * @see parent::decrypt()
+     * @param string $ciphertext
+     * @return string
+     */
+    public function decrypt($ciphertext)
+    {
+        $this->setup();
+
+        switch ($this->engine) {
+            case self::ENGINE_LIBSODIUM:
+                if ($this->oldtag === false) {
+                    throw new InsufficientSetupException('Authentication Tag has not been set');
+                }
+                if (strlen($this->oldtag) != 16) {
+                    break;
+                }
+                $plaintext = sodium_crypto_aead_aes256gcm_decrypt($ciphertext . $this->oldtag, $this->aad, $this->nonce, $this->key);
+                if ($plaintext === false) {
+                    $this->oldtag = false;
+                    throw new BadDecryptionException('Error decrypting ciphertext with libsodium');
+                }
+                return $plaintext;
+            case self::ENGINE_OPENSSL_GCM:
+                if ($this->oldtag === false) {
+                    throw new InsufficientSetupException('Authentication Tag has not been set');
+                }
+                $plaintext = openssl_decrypt(
+                    $ciphertext,
+                    'aes-' . $this->getKeyLength() . '-gcm',
+                    $this->key,
+                    OPENSSL_RAW_DATA,
+                    $this->nonce,
+                    $this->oldtag,
+                    $this->aad
+                );
+                if ($plaintext === false) {
+                    $this->oldtag = false;
+                    throw new BadDecryptionException('Error decrypting ciphertext with OpenSSL');
+                }
+                return $plaintext;
+        }
+
+        return parent::decrypt($ciphertext);
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/Salsa20.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/Salsa20.php
new file mode 100644
index 0000000..0a35f47
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/Salsa20.php
@@ -0,0 +1,526 @@
+<?php
+
+/**
+ * Pure-PHP implementation of Salsa20.
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2019 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt;
+
+use phpseclib3\Common\Functions\Strings;
+use phpseclib3\Crypt\Common\StreamCipher;
+use phpseclib3\Exception\BadDecryptionException;
+use phpseclib3\Exception\InsufficientSetupException;
+
+/**
+ * Pure-PHP implementation of Salsa20.
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+class Salsa20 extends StreamCipher
+{
+    /**
+     * Part 1 of the state
+     *
+     * @var string|false
+     */
+    protected $p1 = false;
+
+    /**
+     * Part 2 of the state
+     *
+     * @var string|false
+     */
+    protected $p2 = false;
+
+    /**
+     * Key Length (in bytes)
+     *
+     * @var int
+     */
+    protected $key_length = 32; // = 256 bits
+
+    /**
+     * @see \phpseclib3\Crypt\Salsa20::crypt()
+     */
+    const ENCRYPT = 0;
+
+    /**
+     * @see \phpseclib3\Crypt\Salsa20::crypt()
+     */
+    const DECRYPT = 1;
+
+    /**
+     * Encryption buffer for continuous mode
+     *
+     * @var array
+     */
+    protected $enbuffer;
+
+    /**
+     * Decryption buffer for continuous mode
+     *
+     * @var array
+     */
+    protected $debuffer;
+
+    /**
+     * Counter
+     *
+     * @var int
+     */
+    protected $counter = 0;
+
+    /**
+     * Using Generated Poly1305 Key
+     *
+     * @var boolean
+     */
+    protected $usingGeneratedPoly1305Key = false;
+
+    /**
+     * Salsa20 uses a nonce
+     *
+     * @return bool
+     */
+    public function usesNonce()
+    {
+        return true;
+    }
+
+    /**
+     * Sets the key.
+     *
+     * @param string $key
+     * @throws \LengthException if the key length isn't supported
+     */
+    public function setKey($key)
+    {
+        switch (strlen($key)) {
+            case 16:
+            case 32:
+                break;
+            default:
+                throw new \LengthException('Key of size ' . strlen($key) . ' not supported by this algorithm. Only keys of sizes 16 or 32 are supported');
+        }
+
+        parent::setKey($key);
+    }
+
+    /**
+     * Sets the nonce.
+     *
+     * @param string $nonce
+     */
+    public function setNonce($nonce)
+    {
+        if (strlen($nonce) != 8) {
+            throw new \LengthException('Nonce of size ' . strlen($key) . ' not supported by this algorithm. Only an 64-bit nonce is supported');
+        }
+
+        $this->nonce = $nonce;
+        $this->changed = true;
+        $this->setEngine();
+    }
+
+    /**
+     * Sets the counter.
+     *
+     * @param int $counter
+     */
+    public function setCounter($counter)
+    {
+        $this->counter = $counter;
+        $this->setEngine();
+    }
+
+    /**
+     * Creates a Poly1305 key using the method discussed in RFC8439
+     *
+     * See https://tools.ietf.org/html/rfc8439#section-2.6.1
+     */
+    protected function createPoly1305Key()
+    {
+        if ($this->nonce === false) {
+            throw new InsufficientSetupException('No nonce has been defined');
+        }
+
+        if ($this->key === false) {
+            throw new InsufficientSetupException('No key has been defined');
+        }
+
+        $c = clone $this;
+        $c->setCounter(0);
+        $c->usePoly1305 = false;
+        $block = $c->encrypt(str_repeat("\0", 256));
+        $this->setPoly1305Key(substr($block, 0, 32));
+
+        if ($this->counter == 0) {
+            $this->counter++;
+        }
+    }
+
+    /**
+     * Setup the self::ENGINE_INTERNAL $engine
+     *
+     * (re)init, if necessary, the internal cipher $engine
+     *
+     * _setup() will be called each time if $changed === true
+     * typically this happens when using one or more of following public methods:
+     *
+     * - setKey()
+     *
+     * - setNonce()
+     *
+     * - First run of encrypt() / decrypt() with no init-settings
+     *
+     * @see self::setKey()
+     * @see self::setNonce()
+     * @see self::disableContinuousBuffer()
+     */
+    protected function setup()
+    {
+        if (!$this->changed) {
+            return;
+        }
+
+        $this->enbuffer = $this->debuffer = ['ciphertext' => '', 'counter' => $this->counter];
+
+        $this->changed = $this->nonIVChanged = false;
+
+        if ($this->nonce === false) {
+            throw new InsufficientSetupException('No nonce has been defined');
+        }
+
+        if ($this->key === false) {
+            throw new InsufficientSetupException('No key has been defined');
+        }
+
+        if ($this->usePoly1305 && !isset($this->poly1305Key)) {
+            $this->usingGeneratedPoly1305Key = true;
+            $this->createPoly1305Key();
+        }
+
+        $key = $this->key;
+        if (strlen($key) == 16) {
+            $constant = 'expand 16-byte k';
+            $key .= $key;
+        } else {
+            $constant = 'expand 32-byte k';
+        }
+
+        $this->p1 = substr($constant, 0, 4) .
+                    substr($key, 0, 16) .
+                    substr($constant, 4, 4) .
+                    $this->nonce .
+                    "\0\0\0\0";
+        $this->p2 = substr($constant, 8, 4) .
+                    substr($key, 16, 16) .
+                    substr($constant, 12, 4);
+    }
+
+    /**
+     * Setup the key (expansion)
+     */
+    protected function setupKey()
+    {
+        // Salsa20 does not utilize this method
+    }
+
+    /**
+     * Encrypts a message.
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::decrypt()
+     * @see self::crypt()
+     * @param string $plaintext
+     * @return string $ciphertext
+     */
+    public function encrypt($plaintext)
+    {
+        $ciphertext = $this->crypt($plaintext, self::ENCRYPT);
+        if (isset($this->poly1305Key)) {
+            $this->newtag = $this->poly1305($ciphertext);
+        }
+        return $ciphertext;
+    }
+
+    /**
+     * Decrypts a message.
+     *
+     * $this->decrypt($this->encrypt($plaintext)) == $this->encrypt($this->encrypt($plaintext)).
+     * At least if the continuous buffer is disabled.
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::encrypt()
+     * @see self::crypt()
+     * @param string $ciphertext
+     * @return string $plaintext
+     */
+    public function decrypt($ciphertext)
+    {
+        if (isset($this->poly1305Key)) {
+            if ($this->oldtag === false) {
+                throw new InsufficientSetupException('Authentication Tag has not been set');
+            }
+            $newtag = $this->poly1305($ciphertext);
+            if ($this->oldtag != substr($newtag, 0, strlen($this->oldtag))) {
+                $this->oldtag = false;
+                throw new BadDecryptionException('Derived authentication tag and supplied authentication tag do not match');
+            }
+            $this->oldtag = false;
+        }
+
+        return $this->crypt($ciphertext, self::DECRYPT);
+    }
+
+    /**
+     * Encrypts a block
+     *
+     * @param string $in
+     */
+    protected function encryptBlock($in)
+    {
+        // Salsa20 does not utilize this method
+    }
+
+    /**
+     * Decrypts a block
+     *
+     * @param string $in
+     */
+    protected function decryptBlock($in)
+    {
+        // Salsa20 does not utilize this method
+    }
+
+    /**
+     * Encrypts or decrypts a message.
+     *
+     * @see self::encrypt()
+     * @see self::decrypt()
+     * @param string $text
+     * @param int $mode
+     * @return string $text
+     */
+    private function crypt($text, $mode)
+    {
+        $this->setup();
+        if (!$this->continuousBuffer) {
+            if ($this->engine == self::ENGINE_OPENSSL) {
+                $iv = pack('V', $this->counter) . $this->p2;
+                return openssl_encrypt(
+                    $text,
+                    $this->cipher_name_openssl,
+                    $this->key,
+                    OPENSSL_RAW_DATA,
+                    $iv
+                );
+            }
+            $i = $this->counter;
+            $blocks = str_split($text, 64);
+            foreach ($blocks as &$block) {
+                $block ^= static::salsa20($this->p1 . pack('V', $i++) . $this->p2);
+            }
+
+            return implode('', $blocks);
+        }
+
+        if ($mode == self::ENCRYPT) {
+            $buffer = &$this->enbuffer;
+        } else {
+            $buffer = &$this->debuffer;
+        }
+        if (!strlen($buffer['ciphertext'])) {
+            $ciphertext = '';
+        } else {
+            $ciphertext = $text ^ Strings::shift($buffer['ciphertext'], strlen($text));
+            $text = substr($text, strlen($ciphertext));
+            if (!strlen($text)) {
+                return $ciphertext;
+            }
+        }
+
+        $overflow = strlen($text) % 64; // & 0x3F
+        if ($overflow) {
+            $text2 = Strings::pop($text, $overflow);
+            if ($this->engine == self::ENGINE_OPENSSL) {
+                $iv = pack('V', $buffer['counter']) . $this->p2;
+                // at this point $text should be a multiple of 64
+                $buffer['counter'] += (strlen($text) >> 6) + 1; // ie. divide by 64
+                $encrypted = openssl_encrypt(
+                    $text . str_repeat("\0", 64),
+                    $this->cipher_name_openssl,
+                    $this->key,
+                    OPENSSL_RAW_DATA,
+                    $iv
+                );
+                $temp = Strings::pop($encrypted, 64);
+            } else {
+                $blocks = str_split($text, 64);
+                if (strlen($text)) {
+                    foreach ($blocks as &$block) {
+                        $block ^= static::salsa20($this->p1 . pack('V', $buffer['counter']++) . $this->p2);
+                    }
+                }
+                $encrypted = implode('', $blocks);
+                $temp = static::salsa20($this->p1 . pack('V', $buffer['counter']++) . $this->p2);
+            }
+            $ciphertext .= $encrypted . ($text2 ^ $temp);
+            $buffer['ciphertext'] = substr($temp, $overflow);
+        } elseif (!strlen($buffer['ciphertext'])) {
+            if ($this->engine == self::ENGINE_OPENSSL) {
+                $iv = pack('V', $buffer['counter']) . $this->p2;
+                $buffer['counter'] += (strlen($text) >> 6);
+                $ciphertext .= openssl_encrypt(
+                    $text,
+                    $this->cipher_name_openssl,
+                    $this->key,
+                    OPENSSL_RAW_DATA,
+                    $iv
+                );
+            } else {
+                $blocks = str_split($text, 64);
+                foreach ($blocks as &$block) {
+                    $block ^= static::salsa20($this->p1 . pack('V', $buffer['counter']++) . $this->p2);
+                }
+                $ciphertext .= implode('', $blocks);
+            }
+        }
+
+        return $ciphertext;
+    }
+
+    /**
+     * Left Rotate
+     *
+     * @param int $x
+     * @param int $n
+     * @return int
+     */
+    protected static function leftRotate($x, $n)
+    {
+        if (PHP_INT_SIZE == 8) {
+            $r1 = $x << $n;
+            $r1 &= 0xFFFFFFFF;
+            $r2 = ($x & 0xFFFFFFFF) >> (32 - $n);
+        } else {
+            $x = (int) $x;
+            $r1 = $x << $n;
+            $r2 = $x >> (32 - $n);
+            $r2 &= (1 << $n) - 1;
+        }
+        return $r1 | $r2;
+    }
+
+    /**
+     * The quarterround function
+     *
+     * @param int $a
+     * @param int $b
+     * @param int $c
+     * @param int $d
+     */
+    protected static function quarterRound(&$a, &$b, &$c, &$d)
+    {
+        $b ^= self::leftRotate($a + $d, 7);
+        $c ^= self::leftRotate($b + $a, 9);
+        $d ^= self::leftRotate($c + $b, 13);
+        $a ^= self::leftRotate($d + $c, 18);
+    }
+
+    /**
+     * The doubleround function
+     *
+     * @param int $x0 (by reference)
+     * @param int $x1 (by reference)
+     * @param int $x2 (by reference)
+     * @param int $x3 (by reference)
+     * @param int $x4 (by reference)
+     * @param int $x5 (by reference)
+     * @param int $x6 (by reference)
+     * @param int $x7 (by reference)
+     * @param int $x8 (by reference)
+     * @param int $x9 (by reference)
+     * @param int $x10 (by reference)
+     * @param int $x11 (by reference)
+     * @param int $x12 (by reference)
+     * @param int $x13 (by reference)
+     * @param int $x14 (by reference)
+     * @param int $x15 (by reference)
+     */
+    protected static function doubleRound(&$x0, &$x1, &$x2, &$x3, &$x4, &$x5, &$x6, &$x7, &$x8, &$x9, &$x10, &$x11, &$x12, &$x13, &$x14, &$x15)
+    {
+        // columnRound
+        static::quarterRound($x0, $x4, $x8, $x12);
+        static::quarterRound($x5, $x9, $x13, $x1);
+        static::quarterRound($x10, $x14, $x2, $x6);
+        static::quarterRound($x15, $x3, $x7, $x11);
+        // rowRound
+        static::quarterRound($x0, $x1, $x2, $x3);
+        static::quarterRound($x5, $x6, $x7, $x4);
+        static::quarterRound($x10, $x11, $x8, $x9);
+        static::quarterRound($x15, $x12, $x13, $x14);
+    }
+
+    /**
+     * The Salsa20 hash function function
+     *
+     * @param string $x
+     */
+    protected static function salsa20($x)
+    {
+        $z = $x = unpack('V*', $x);
+        for ($i = 0; $i < 10; $i++) {
+            static::doubleRound($z[1], $z[2], $z[3], $z[4], $z[5], $z[6], $z[7], $z[8], $z[9], $z[10], $z[11], $z[12], $z[13], $z[14], $z[15], $z[16]);
+        }
+
+        for ($i = 1; $i <= 16; $i++) {
+            $x[$i] += $z[$i];
+        }
+
+        return pack('V*', ...$x);
+    }
+
+    /**
+     * Calculates Poly1305 MAC
+     *
+     * @see self::decrypt()
+     * @see self::encrypt()
+     * @param string $ciphertext
+     * @return string
+     */
+    protected function poly1305($ciphertext)
+    {
+        if (!$this->usingGeneratedPoly1305Key) {
+            return parent::poly1305($this->aad . $ciphertext);
+        } else {
+            /*
+            sodium_crypto_aead_chacha20poly1305_encrypt does not calculate the poly1305 tag
+            the same way sodium_crypto_aead_chacha20poly1305_ietf_encrypt does. you can see
+            how the latter encrypts it in Salsa20::encrypt(). here's how the former encrypts
+            it:
+
+            $this->newtag = $this->poly1305(
+                $this->aad .
+                pack('V', strlen($this->aad)) . "\0\0\0\0" .
+                $ciphertext .
+                pack('V', strlen($ciphertext)) . "\0\0\0\0"
+            );
+
+            phpseclib opts to use the IETF construction, even when the nonce is 64-bits
+            instead of 96-bits
+            */
+            return parent::poly1305(
+                self::nullPad128($this->aad) .
+                self::nullPad128($ciphertext) .
+                pack('V', strlen($this->aad)) . "\0\0\0\0" .
+                pack('V', strlen($ciphertext)) . "\0\0\0\0"
+            );
+        }
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/TripleDES.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/TripleDES.php
new file mode 100644
index 0000000..1ff5ed0
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/TripleDES.php
@@ -0,0 +1,436 @@
+<?php
+
+/**
+ * Pure-PHP implementation of Triple DES.
+ *
+ * Uses mcrypt, if available, and an internal implementation, otherwise.  Operates in the EDE3 mode (encrypt-decrypt-encrypt).
+ *
+ * PHP version 5
+ *
+ * Here's a short example of how to use this library:
+ * <code>
+ * <?php
+ *    include 'vendor/autoload.php';
+ *
+ *    $des = new \phpseclib3\Crypt\TripleDES('ctr');
+ *
+ *    $des->setKey('abcdefghijklmnopqrstuvwx');
+ *
+ *    $size = 10 * 1024;
+ *    $plaintext = '';
+ *    for ($i = 0; $i < $size; $i++) {
+ *        $plaintext.= 'a';
+ *    }
+ *
+ *    echo $des->decrypt($des->encrypt($plaintext));
+ * ?>
+ * </code>
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2007 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt;
+
+/**
+ * Pure-PHP implementation of Triple DES.
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+class TripleDES extends DES
+{
+    /**
+     * Encrypt / decrypt using inner chaining
+     *
+     * Inner chaining is used by SSH-1 and is generally considered to be less secure then outer chaining (self::MODE_CBC3).
+     */
+    const MODE_3CBC = -2;
+
+    /**
+     * Encrypt / decrypt using outer chaining
+     *
+     * Outer chaining is used by SSH-2 and when the mode is set to \phpseclib3\Crypt\Common\BlockCipher::MODE_CBC.
+     */
+    const MODE_CBC3 = self::MODE_CBC;
+
+    /**
+     * Key Length (in bytes)
+     *
+     * @see \phpseclib3\Crypt\TripleDES::setKeyLength()
+     * @var int
+     */
+    protected $key_length = 24;
+
+    /**
+     * The mcrypt specific name of the cipher
+     *
+     * @see \phpseclib3\Crypt\DES::cipher_name_mcrypt
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::cipher_name_mcrypt
+     * @var string
+     */
+    protected $cipher_name_mcrypt = 'tripledes';
+
+    /**
+     * Optimizing value while CFB-encrypting
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::cfb_init_len
+     * @var int
+     */
+    protected $cfb_init_len = 750;
+
+    /**
+     * max possible size of $key
+     *
+     * @see self::setKey()
+     * @see \phpseclib3\Crypt\DES::setKey()
+     * @var string
+     */
+    protected $key_length_max = 24;
+
+    /**
+     * Internal flag whether using self::MODE_3CBC or not
+     *
+     * @var bool
+     */
+    private $mode_3cbc;
+
+    /**
+     * The \phpseclib3\Crypt\DES objects
+     *
+     * Used only if $mode_3cbc === true
+     *
+     * @var array
+     */
+    private $des;
+
+    /**
+     * Default Constructor.
+     *
+     * Determines whether or not the mcrypt or OpenSSL extensions should be used.
+     *
+     * $mode could be:
+     *
+     * - ecb
+     *
+     * - cbc
+     *
+     * - ctr
+     *
+     * - cfb
+     *
+     * - ofb
+     *
+     * - 3cbc
+     *
+     * - cbc3 (same as cbc)
+     *
+     * @see \phpseclib3\Crypt\DES::__construct()
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::__construct()
+     * @param string $mode
+     */
+    public function __construct($mode)
+    {
+        switch (strtolower($mode)) {
+            // In case of self::MODE_3CBC, we init as CRYPT_DES_MODE_CBC
+            // and additional flag us internally as 3CBC
+            case '3cbc':
+                parent::__construct('cbc');
+                $this->mode_3cbc = true;
+
+                // This three $des'es will do the 3CBC work (if $key > 64bits)
+                $this->des = [
+                    new DES('cbc'),
+                    new DES('cbc'),
+                    new DES('cbc'),
+                ];
+
+                // we're going to be doing the padding, ourselves, so disable it in the \phpseclib3\Crypt\DES objects
+                $this->des[0]->disablePadding();
+                $this->des[1]->disablePadding();
+                $this->des[2]->disablePadding();
+                break;
+            case 'cbc3':
+                $mode = 'cbc';
+                // fall-through
+            // If not 3CBC, we init as usual
+            default:
+                parent::__construct($mode);
+
+                if ($this->mode == self::MODE_STREAM) {
+                    throw new BadModeException('Block ciphers cannot be ran in stream mode');
+                }
+        }
+    }
+
+    /**
+     * Test for engine validity
+     *
+     * This is mainly just a wrapper to set things up for \phpseclib3\Crypt\Common\SymmetricKey::isValidEngine()
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::__construct()
+     * @param int $engine
+     * @return bool
+     */
+    protected function isValidEngineHelper($engine)
+    {
+        if ($engine == self::ENGINE_OPENSSL) {
+            $this->cipher_name_openssl_ecb = 'des-ede3';
+            $mode = $this->openssl_translate_mode();
+            $this->cipher_name_openssl = $mode == 'ecb' ? 'des-ede3' : 'des-ede3-' . $mode;
+        }
+
+        return parent::isValidEngineHelper($engine);
+    }
+
+    /**
+     * Sets the initialization vector.
+     *
+     * SetIV is not required when \phpseclib3\Crypt\Common\SymmetricKey::MODE_ECB is being used.
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::setIV()
+     * @param string $iv
+     */
+    public function setIV($iv)
+    {
+        parent::setIV($iv);
+        if ($this->mode_3cbc) {
+            $this->des[0]->setIV($iv);
+            $this->des[1]->setIV($iv);
+            $this->des[2]->setIV($iv);
+        }
+    }
+
+    /**
+     * Sets the key length.
+     *
+     * Valid key lengths are 128 and 192 bits.
+     *
+     * If you want to use a 64-bit key use DES.php
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey:setKeyLength()
+     * @throws \LengthException if the key length is invalid
+     * @param int $length
+     */
+    public function setKeyLength($length)
+    {
+        switch ($length) {
+            case 128:
+            case 192:
+                break;
+            default:
+                throw new \LengthException('Key size of ' . $length . ' bits is not supported by this algorithm. Only keys of sizes 128 or 192 bits are supported');
+        }
+
+        parent::setKeyLength($length);
+    }
+
+    /**
+     * Sets the key.
+     *
+     * Triple DES can use 128-bit (eg. strlen($key) == 16) or 192-bit (eg. strlen($key) == 24) keys.
+     *
+     * DES also requires that every eighth bit be a parity bit, however, we'll ignore that.
+     *
+     * @see \phpseclib3\Crypt\DES::setKey()
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::setKey()
+     * @throws \LengthException if the key length is invalid
+     * @param string $key
+     */
+    public function setKey($key)
+    {
+        if ($this->explicit_key_length !== false && strlen($key) != $this->explicit_key_length) {
+            throw new \LengthException('Key length has already been set to ' . $this->explicit_key_length . ' bytes and this key is ' . strlen($key) . ' bytes');
+        }
+
+        switch (strlen($key)) {
+            case 16:
+                $key .= substr($key, 0, 8);
+                break;
+            case 24:
+                break;
+            default:
+                throw new \LengthException('Key of size ' . strlen($key) . ' not supported by this algorithm. Only keys of sizes 16 or 24 are supported');
+        }
+
+        // copied from self::setKey()
+        $this->key = $key;
+        $this->key_length = strlen($key);
+        $this->changed = $this->nonIVChanged = true;
+        $this->setEngine();
+
+        if ($this->mode_3cbc) {
+            $this->des[0]->setKey(substr($key, 0, 8));
+            $this->des[1]->setKey(substr($key, 8, 8));
+            $this->des[2]->setKey(substr($key, 16, 8));
+        }
+    }
+
+    /**
+     * Encrypts a message.
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::encrypt()
+     * @param string $plaintext
+     * @return string $cipertext
+     */
+    public function encrypt($plaintext)
+    {
+        // parent::en/decrypt() is able to do all the work for all modes and keylengths,
+        // except for: self::MODE_3CBC (inner chaining CBC) with a key > 64bits
+
+        // if the key is smaller then 8, do what we'd normally do
+        if ($this->mode_3cbc && strlen($this->key) > 8) {
+            return $this->des[2]->encrypt(
+                $this->des[1]->decrypt(
+                    $this->des[0]->encrypt(
+                        $this->pad($plaintext)
+                    )
+                )
+            );
+        }
+
+        return parent::encrypt($plaintext);
+    }
+
+    /**
+     * Decrypts a message.
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::decrypt()
+     * @param string $ciphertext
+     * @return string $plaintext
+     */
+    public function decrypt($ciphertext)
+    {
+        if ($this->mode_3cbc && strlen($this->key) > 8) {
+            return $this->unpad(
+                $this->des[0]->decrypt(
+                    $this->des[1]->encrypt(
+                        $this->des[2]->decrypt(
+                            str_pad($ciphertext, (strlen($ciphertext) + 7) & 0xFFFFFFF8, "\0")
+                        )
+                    )
+                )
+            );
+        }
+
+        return parent::decrypt($ciphertext);
+    }
+
+    /**
+     * Treat consecutive "packets" as if they are a continuous buffer.
+     *
+     * Say you have a 16-byte plaintext $plaintext.  Using the default behavior, the two following code snippets
+     * will yield different outputs:
+     *
+     * <code>
+     *    echo $des->encrypt(substr($plaintext, 0, 8));
+     *    echo $des->encrypt(substr($plaintext, 8, 8));
+     * </code>
+     * <code>
+     *    echo $des->encrypt($plaintext);
+     * </code>
+     *
+     * The solution is to enable the continuous buffer.  Although this will resolve the above discrepancy, it creates
+     * another, as demonstrated with the following:
+     *
+     * <code>
+     *    $des->encrypt(substr($plaintext, 0, 8));
+     *    echo $des->decrypt($des->encrypt(substr($plaintext, 8, 8)));
+     * </code>
+     * <code>
+     *    echo $des->decrypt($des->encrypt(substr($plaintext, 8, 8)));
+     * </code>
+     *
+     * With the continuous buffer disabled, these would yield the same output.  With it enabled, they yield different
+     * outputs.  The reason is due to the fact that the initialization vector's change after every encryption /
+     * decryption round when the continuous buffer is enabled.  When it's disabled, they remain constant.
+     *
+     * Put another way, when the continuous buffer is enabled, the state of the \phpseclib3\Crypt\DES() object changes after each
+     * encryption / decryption round, whereas otherwise, it'd remain constant.  For this reason, it's recommended that
+     * continuous buffers not be used.  They do offer better security and are, in fact, sometimes required (SSH uses them),
+     * however, they are also less intuitive and more likely to cause you problems.
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::enableContinuousBuffer()
+     * @see self::disableContinuousBuffer()
+     */
+    public function enableContinuousBuffer()
+    {
+        parent::enableContinuousBuffer();
+        if ($this->mode_3cbc) {
+            $this->des[0]->enableContinuousBuffer();
+            $this->des[1]->enableContinuousBuffer();
+            $this->des[2]->enableContinuousBuffer();
+        }
+    }
+
+    /**
+     * Treat consecutive packets as if they are a discontinuous buffer.
+     *
+     * The default behavior.
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::disableContinuousBuffer()
+     * @see self::enableContinuousBuffer()
+     */
+    public function disableContinuousBuffer()
+    {
+        parent::disableContinuousBuffer();
+        if ($this->mode_3cbc) {
+            $this->des[0]->disableContinuousBuffer();
+            $this->des[1]->disableContinuousBuffer();
+            $this->des[2]->disableContinuousBuffer();
+        }
+    }
+
+    /**
+     * Creates the key schedule
+     *
+     * @see \phpseclib3\Crypt\DES::setupKey()
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::setupKey()
+     */
+    protected function setupKey()
+    {
+        switch (true) {
+            // if $key <= 64bits we configure our internal pure-php cipher engine
+            // to act as regular [1]DES, not as 3DES. mcrypt.so::tripledes does the same.
+            case strlen($this->key) <= 8:
+                $this->des_rounds = 1;
+                break;
+
+            // otherwise, if $key > 64bits, we configure our engine to work as 3DES.
+            default:
+                $this->des_rounds = 3;
+
+                // (only) if 3CBC is used we have, of course, to setup the $des[0-2] keys also separately.
+                if ($this->mode_3cbc) {
+                    $this->des[0]->setupKey();
+                    $this->des[1]->setupKey();
+                    $this->des[2]->setupKey();
+
+                    // because $des[0-2] will, now, do all the work we can return here
+                    // not need unnecessary stress parent::setupKey() with our, now unused, $key.
+                    return;
+                }
+        }
+        // setup our key
+        parent::setupKey();
+    }
+
+    /**
+     * Sets the internal crypt engine
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::__construct()
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::setPreferredEngine()
+     * @param int $engine
+     */
+    public function setPreferredEngine($engine)
+    {
+        if ($this->mode_3cbc) {
+            $this->des[0]->setPreferredEngine($engine);
+            $this->des[1]->setPreferredEngine($engine);
+            $this->des[2]->setPreferredEngine($engine);
+        }
+
+        parent::setPreferredEngine($engine);
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/Twofish.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/Twofish.php
new file mode 100644
index 0000000..bf76563
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/Twofish.php
@@ -0,0 +1,816 @@
+<?php
+
+/**
+ * Pure-PHP implementation of Twofish.
+ *
+ * Uses mcrypt, if available, and an internal implementation, otherwise.
+ *
+ * PHP version 5
+ *
+ * Useful resources are as follows:
+ *
+ *  - {@link http://en.wikipedia.org/wiki/Twofish Wikipedia description of Twofish}
+ *
+ * Here's a short example of how to use this library:
+ * <code>
+ * <?php
+ *    include 'vendor/autoload.php';
+ *
+ *    $twofish = new \phpseclib3\Crypt\Twofish('ctr');
+ *
+ *    $twofish->setKey('12345678901234567890123456789012');
+ *
+ *    $plaintext = str_repeat('a', 1024);
+ *
+ *    echo $twofish->decrypt($twofish->encrypt($plaintext));
+ * ?>
+ * </code>
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @author    Hans-Juergen Petrich <petrich@tronic-media.com>
+ * @copyright 2007 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt;
+
+use phpseclib3\Crypt\Common\BlockCipher;
+use phpseclib3\Exception\BadModeException;
+
+/**
+ * Pure-PHP implementation of Twofish.
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ * @author  Hans-Juergen Petrich <petrich@tronic-media.com>
+ */
+class Twofish extends BlockCipher
+{
+    /**
+     * The mcrypt specific name of the cipher
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::cipher_name_mcrypt
+     * @var string
+     */
+    protected $cipher_name_mcrypt = 'twofish';
+
+    /**
+     * Optimizing value while CFB-encrypting
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::cfb_init_len
+     * @var int
+     */
+    protected $cfb_init_len = 800;
+
+    /**
+     * Q-Table
+     *
+     * @var array
+     */
+    private static $q0 = [
+        0xA9, 0x67, 0xB3, 0xE8, 0x04, 0xFD, 0xA3, 0x76,
+        0x9A, 0x92, 0x80, 0x78, 0xE4, 0xDD, 0xD1, 0x38,
+        0x0D, 0xC6, 0x35, 0x98, 0x18, 0xF7, 0xEC, 0x6C,
+        0x43, 0x75, 0x37, 0x26, 0xFA, 0x13, 0x94, 0x48,
+        0xF2, 0xD0, 0x8B, 0x30, 0x84, 0x54, 0xDF, 0x23,
+        0x19, 0x5B, 0x3D, 0x59, 0xF3, 0xAE, 0xA2, 0x82,
+        0x63, 0x01, 0x83, 0x2E, 0xD9, 0x51, 0x9B, 0x7C,
+        0xA6, 0xEB, 0xA5, 0xBE, 0x16, 0x0C, 0xE3, 0x61,
+        0xC0, 0x8C, 0x3A, 0xF5, 0x73, 0x2C, 0x25, 0x0B,
+        0xBB, 0x4E, 0x89, 0x6B, 0x53, 0x6A, 0xB4, 0xF1,
+        0xE1, 0xE6, 0xBD, 0x45, 0xE2, 0xF4, 0xB6, 0x66,
+        0xCC, 0x95, 0x03, 0x56, 0xD4, 0x1C, 0x1E, 0xD7,
+        0xFB, 0xC3, 0x8E, 0xB5, 0xE9, 0xCF, 0xBF, 0xBA,
+        0xEA, 0x77, 0x39, 0xAF, 0x33, 0xC9, 0x62, 0x71,
+        0x81, 0x79, 0x09, 0xAD, 0x24, 0xCD, 0xF9, 0xD8,
+        0xE5, 0xC5, 0xB9, 0x4D, 0x44, 0x08, 0x86, 0xE7,
+        0xA1, 0x1D, 0xAA, 0xED, 0x06, 0x70, 0xB2, 0xD2,
+        0x41, 0x7B, 0xA0, 0x11, 0x31, 0xC2, 0x27, 0x90,
+        0x20, 0xF6, 0x60, 0xFF, 0x96, 0x5C, 0xB1, 0xAB,
+        0x9E, 0x9C, 0x52, 0x1B, 0x5F, 0x93, 0x0A, 0xEF,
+        0x91, 0x85, 0x49, 0xEE, 0x2D, 0x4F, 0x8F, 0x3B,
+        0x47, 0x87, 0x6D, 0x46, 0xD6, 0x3E, 0x69, 0x64,
+        0x2A, 0xCE, 0xCB, 0x2F, 0xFC, 0x97, 0x05, 0x7A,
+        0xAC, 0x7F, 0xD5, 0x1A, 0x4B, 0x0E, 0xA7, 0x5A,
+        0x28, 0x14, 0x3F, 0x29, 0x88, 0x3C, 0x4C, 0x02,
+        0xB8, 0xDA, 0xB0, 0x17, 0x55, 0x1F, 0x8A, 0x7D,
+        0x57, 0xC7, 0x8D, 0x74, 0xB7, 0xC4, 0x9F, 0x72,
+        0x7E, 0x15, 0x22, 0x12, 0x58, 0x07, 0x99, 0x34,
+        0x6E, 0x50, 0xDE, 0x68, 0x65, 0xBC, 0xDB, 0xF8,
+        0xC8, 0xA8, 0x2B, 0x40, 0xDC, 0xFE, 0x32, 0xA4,
+        0xCA, 0x10, 0x21, 0xF0, 0xD3, 0x5D, 0x0F, 0x00,
+        0x6F, 0x9D, 0x36, 0x42, 0x4A, 0x5E, 0xC1, 0xE0
+    ];
+
+    /**
+     * Q-Table
+     *
+     * @var array
+     */
+    private static $q1 = [
+        0x75, 0xF3, 0xC6, 0xF4, 0xDB, 0x7B, 0xFB, 0xC8,
+        0x4A, 0xD3, 0xE6, 0x6B, 0x45, 0x7D, 0xE8, 0x4B,
+        0xD6, 0x32, 0xD8, 0xFD, 0x37, 0x71, 0xF1, 0xE1,
+        0x30, 0x0F, 0xF8, 0x1B, 0x87, 0xFA, 0x06, 0x3F,
+        0x5E, 0xBA, 0xAE, 0x5B, 0x8A, 0x00, 0xBC, 0x9D,
+        0x6D, 0xC1, 0xB1, 0x0E, 0x80, 0x5D, 0xD2, 0xD5,
+        0xA0, 0x84, 0x07, 0x14, 0xB5, 0x90, 0x2C, 0xA3,
+        0xB2, 0x73, 0x4C, 0x54, 0x92, 0x74, 0x36, 0x51,
+        0x38, 0xB0, 0xBD, 0x5A, 0xFC, 0x60, 0x62, 0x96,
+        0x6C, 0x42, 0xF7, 0x10, 0x7C, 0x28, 0x27, 0x8C,
+        0x13, 0x95, 0x9C, 0xC7, 0x24, 0x46, 0x3B, 0x70,
+        0xCA, 0xE3, 0x85, 0xCB, 0x11, 0xD0, 0x93, 0xB8,
+        0xA6, 0x83, 0x20, 0xFF, 0x9F, 0x77, 0xC3, 0xCC,
+        0x03, 0x6F, 0x08, 0xBF, 0x40, 0xE7, 0x2B, 0xE2,
+        0x79, 0x0C, 0xAA, 0x82, 0x41, 0x3A, 0xEA, 0xB9,
+        0xE4, 0x9A, 0xA4, 0x97, 0x7E, 0xDA, 0x7A, 0x17,
+        0x66, 0x94, 0xA1, 0x1D, 0x3D, 0xF0, 0xDE, 0xB3,
+        0x0B, 0x72, 0xA7, 0x1C, 0xEF, 0xD1, 0x53, 0x3E,
+        0x8F, 0x33, 0x26, 0x5F, 0xEC, 0x76, 0x2A, 0x49,
+        0x81, 0x88, 0xEE, 0x21, 0xC4, 0x1A, 0xEB, 0xD9,
+        0xC5, 0x39, 0x99, 0xCD, 0xAD, 0x31, 0x8B, 0x01,
+        0x18, 0x23, 0xDD, 0x1F, 0x4E, 0x2D, 0xF9, 0x48,
+        0x4F, 0xF2, 0x65, 0x8E, 0x78, 0x5C, 0x58, 0x19,
+        0x8D, 0xE5, 0x98, 0x57, 0x67, 0x7F, 0x05, 0x64,
+        0xAF, 0x63, 0xB6, 0xFE, 0xF5, 0xB7, 0x3C, 0xA5,
+        0xCE, 0xE9, 0x68, 0x44, 0xE0, 0x4D, 0x43, 0x69,
+        0x29, 0x2E, 0xAC, 0x15, 0x59, 0xA8, 0x0A, 0x9E,
+        0x6E, 0x47, 0xDF, 0x34, 0x35, 0x6A, 0xCF, 0xDC,
+        0x22, 0xC9, 0xC0, 0x9B, 0x89, 0xD4, 0xED, 0xAB,
+        0x12, 0xA2, 0x0D, 0x52, 0xBB, 0x02, 0x2F, 0xA9,
+        0xD7, 0x61, 0x1E, 0xB4, 0x50, 0x04, 0xF6, 0xC2,
+        0x16, 0x25, 0x86, 0x56, 0x55, 0x09, 0xBE, 0x91
+    ];
+
+    /**
+     * M-Table
+     *
+     * @var array
+     */
+    private static $m0 = [
+        0xBCBC3275, 0xECEC21F3, 0x202043C6, 0xB3B3C9F4, 0xDADA03DB, 0x02028B7B, 0xE2E22BFB, 0x9E9EFAC8,
+        0xC9C9EC4A, 0xD4D409D3, 0x18186BE6, 0x1E1E9F6B, 0x98980E45, 0xB2B2387D, 0xA6A6D2E8, 0x2626B74B,
+        0x3C3C57D6, 0x93938A32, 0x8282EED8, 0x525298FD, 0x7B7BD437, 0xBBBB3771, 0x5B5B97F1, 0x474783E1,
+        0x24243C30, 0x5151E20F, 0xBABAC6F8, 0x4A4AF31B, 0xBFBF4887, 0x0D0D70FA, 0xB0B0B306, 0x7575DE3F,
+        0xD2D2FD5E, 0x7D7D20BA, 0x666631AE, 0x3A3AA35B, 0x59591C8A, 0x00000000, 0xCDCD93BC, 0x1A1AE09D,
+        0xAEAE2C6D, 0x7F7FABC1, 0x2B2BC7B1, 0xBEBEB90E, 0xE0E0A080, 0x8A8A105D, 0x3B3B52D2, 0x6464BAD5,
+        0xD8D888A0, 0xE7E7A584, 0x5F5FE807, 0x1B1B1114, 0x2C2CC2B5, 0xFCFCB490, 0x3131272C, 0x808065A3,
+        0x73732AB2, 0x0C0C8173, 0x79795F4C, 0x6B6B4154, 0x4B4B0292, 0x53536974, 0x94948F36, 0x83831F51,
+        0x2A2A3638, 0xC4C49CB0, 0x2222C8BD, 0xD5D5F85A, 0xBDBDC3FC, 0x48487860, 0xFFFFCE62, 0x4C4C0796,
+        0x4141776C, 0xC7C7E642, 0xEBEB24F7, 0x1C1C1410, 0x5D5D637C, 0x36362228, 0x6767C027, 0xE9E9AF8C,
+        0x4444F913, 0x1414EA95, 0xF5F5BB9C, 0xCFCF18C7, 0x3F3F2D24, 0xC0C0E346, 0x7272DB3B, 0x54546C70,
+        0x29294CCA, 0xF0F035E3, 0x0808FE85, 0xC6C617CB, 0xF3F34F11, 0x8C8CE4D0, 0xA4A45993, 0xCACA96B8,
+        0x68683BA6, 0xB8B84D83, 0x38382820, 0xE5E52EFF, 0xADAD569F, 0x0B0B8477, 0xC8C81DC3, 0x9999FFCC,
+        0x5858ED03, 0x19199A6F, 0x0E0E0A08, 0x95957EBF, 0x70705040, 0xF7F730E7, 0x6E6ECF2B, 0x1F1F6EE2,
+        0xB5B53D79, 0x09090F0C, 0x616134AA, 0x57571682, 0x9F9F0B41, 0x9D9D803A, 0x111164EA, 0x2525CDB9,
+        0xAFAFDDE4, 0x4545089A, 0xDFDF8DA4, 0xA3A35C97, 0xEAEAD57E, 0x353558DA, 0xEDEDD07A, 0x4343FC17,
+        0xF8F8CB66, 0xFBFBB194, 0x3737D3A1, 0xFAFA401D, 0xC2C2683D, 0xB4B4CCF0, 0x32325DDE, 0x9C9C71B3,
+        0x5656E70B, 0xE3E3DA72, 0x878760A7, 0x15151B1C, 0xF9F93AEF, 0x6363BFD1, 0x3434A953, 0x9A9A853E,
+        0xB1B1428F, 0x7C7CD133, 0x88889B26, 0x3D3DA65F, 0xA1A1D7EC, 0xE4E4DF76, 0x8181942A, 0x91910149,
+        0x0F0FFB81, 0xEEEEAA88, 0x161661EE, 0xD7D77321, 0x9797F5C4, 0xA5A5A81A, 0xFEFE3FEB, 0x6D6DB5D9,
+        0x7878AEC5, 0xC5C56D39, 0x1D1DE599, 0x7676A4CD, 0x3E3EDCAD, 0xCBCB6731, 0xB6B6478B, 0xEFEF5B01,
+        0x12121E18, 0x6060C523, 0x6A6AB0DD, 0x4D4DF61F, 0xCECEE94E, 0xDEDE7C2D, 0x55559DF9, 0x7E7E5A48,
+        0x2121B24F, 0x03037AF2, 0xA0A02665, 0x5E5E198E, 0x5A5A6678, 0x65654B5C, 0x62624E58, 0xFDFD4519,
+        0x0606F48D, 0x404086E5, 0xF2F2BE98, 0x3333AC57, 0x17179067, 0x05058E7F, 0xE8E85E05, 0x4F4F7D64,
+        0x89896AAF, 0x10109563, 0x74742FB6, 0x0A0A75FE, 0x5C5C92F5, 0x9B9B74B7, 0x2D2D333C, 0x3030D6A5,
+        0x2E2E49CE, 0x494989E9, 0x46467268, 0x77775544, 0xA8A8D8E0, 0x9696044D, 0x2828BD43, 0xA9A92969,
+        0xD9D97929, 0x8686912E, 0xD1D187AC, 0xF4F44A15, 0x8D8D1559, 0xD6D682A8, 0xB9B9BC0A, 0x42420D9E,
+        0xF6F6C16E, 0x2F2FB847, 0xDDDD06DF, 0x23233934, 0xCCCC6235, 0xF1F1C46A, 0xC1C112CF, 0x8585EBDC,
+        0x8F8F9E22, 0x7171A1C9, 0x9090F0C0, 0xAAAA539B, 0x0101F189, 0x8B8BE1D4, 0x4E4E8CED, 0x8E8E6FAB,
+        0xABABA212, 0x6F6F3EA2, 0xE6E6540D, 0xDBDBF252, 0x92927BBB, 0xB7B7B602, 0x6969CA2F, 0x3939D9A9,
+        0xD3D30CD7, 0xA7A72361, 0xA2A2AD1E, 0xC3C399B4, 0x6C6C4450, 0x07070504, 0x04047FF6, 0x272746C2,
+        0xACACA716, 0xD0D07625, 0x50501386, 0xDCDCF756, 0x84841A55, 0xE1E15109, 0x7A7A25BE, 0x1313EF91
+    ];
+
+    /**
+     * M-Table
+     *
+     * @var array
+     */
+    private static $m1 = [
+        0xA9D93939, 0x67901717, 0xB3719C9C, 0xE8D2A6A6, 0x04050707, 0xFD985252, 0xA3658080, 0x76DFE4E4,
+        0x9A084545, 0x92024B4B, 0x80A0E0E0, 0x78665A5A, 0xE4DDAFAF, 0xDDB06A6A, 0xD1BF6363, 0x38362A2A,
+        0x0D54E6E6, 0xC6432020, 0x3562CCCC, 0x98BEF2F2, 0x181E1212, 0xF724EBEB, 0xECD7A1A1, 0x6C774141,
+        0x43BD2828, 0x7532BCBC, 0x37D47B7B, 0x269B8888, 0xFA700D0D, 0x13F94444, 0x94B1FBFB, 0x485A7E7E,
+        0xF27A0303, 0xD0E48C8C, 0x8B47B6B6, 0x303C2424, 0x84A5E7E7, 0x54416B6B, 0xDF06DDDD, 0x23C56060,
+        0x1945FDFD, 0x5BA33A3A, 0x3D68C2C2, 0x59158D8D, 0xF321ECEC, 0xAE316666, 0xA23E6F6F, 0x82165757,
+        0x63951010, 0x015BEFEF, 0x834DB8B8, 0x2E918686, 0xD9B56D6D, 0x511F8383, 0x9B53AAAA, 0x7C635D5D,
+        0xA63B6868, 0xEB3FFEFE, 0xA5D63030, 0xBE257A7A, 0x16A7ACAC, 0x0C0F0909, 0xE335F0F0, 0x6123A7A7,
+        0xC0F09090, 0x8CAFE9E9, 0x3A809D9D, 0xF5925C5C, 0x73810C0C, 0x2C273131, 0x2576D0D0, 0x0BE75656,
+        0xBB7B9292, 0x4EE9CECE, 0x89F10101, 0x6B9F1E1E, 0x53A93434, 0x6AC4F1F1, 0xB499C3C3, 0xF1975B5B,
+        0xE1834747, 0xE66B1818, 0xBDC82222, 0x450E9898, 0xE26E1F1F, 0xF4C9B3B3, 0xB62F7474, 0x66CBF8F8,
+        0xCCFF9999, 0x95EA1414, 0x03ED5858, 0x56F7DCDC, 0xD4E18B8B, 0x1C1B1515, 0x1EADA2A2, 0xD70CD3D3,
+        0xFB2BE2E2, 0xC31DC8C8, 0x8E195E5E, 0xB5C22C2C, 0xE9894949, 0xCF12C1C1, 0xBF7E9595, 0xBA207D7D,
+        0xEA641111, 0x77840B0B, 0x396DC5C5, 0xAF6A8989, 0x33D17C7C, 0xC9A17171, 0x62CEFFFF, 0x7137BBBB,
+        0x81FB0F0F, 0x793DB5B5, 0x0951E1E1, 0xADDC3E3E, 0x242D3F3F, 0xCDA47676, 0xF99D5555, 0xD8EE8282,
+        0xE5864040, 0xC5AE7878, 0xB9CD2525, 0x4D049696, 0x44557777, 0x080A0E0E, 0x86135050, 0xE730F7F7,
+        0xA1D33737, 0x1D40FAFA, 0xAA346161, 0xED8C4E4E, 0x06B3B0B0, 0x706C5454, 0xB22A7373, 0xD2523B3B,
+        0x410B9F9F, 0x7B8B0202, 0xA088D8D8, 0x114FF3F3, 0x3167CBCB, 0xC2462727, 0x27C06767, 0x90B4FCFC,
+        0x20283838, 0xF67F0404, 0x60784848, 0xFF2EE5E5, 0x96074C4C, 0x5C4B6565, 0xB1C72B2B, 0xAB6F8E8E,
+        0x9E0D4242, 0x9CBBF5F5, 0x52F2DBDB, 0x1BF34A4A, 0x5FA63D3D, 0x9359A4A4, 0x0ABCB9B9, 0xEF3AF9F9,
+        0x91EF1313, 0x85FE0808, 0x49019191, 0xEE611616, 0x2D7CDEDE, 0x4FB22121, 0x8F42B1B1, 0x3BDB7272,
+        0x47B82F2F, 0x8748BFBF, 0x6D2CAEAE, 0x46E3C0C0, 0xD6573C3C, 0x3E859A9A, 0x6929A9A9, 0x647D4F4F,
+        0x2A948181, 0xCE492E2E, 0xCB17C6C6, 0x2FCA6969, 0xFCC3BDBD, 0x975CA3A3, 0x055EE8E8, 0x7AD0EDED,
+        0xAC87D1D1, 0x7F8E0505, 0xD5BA6464, 0x1AA8A5A5, 0x4BB72626, 0x0EB9BEBE, 0xA7608787, 0x5AF8D5D5,
+        0x28223636, 0x14111B1B, 0x3FDE7575, 0x2979D9D9, 0x88AAEEEE, 0x3C332D2D, 0x4C5F7979, 0x02B6B7B7,
+        0xB896CACA, 0xDA583535, 0xB09CC4C4, 0x17FC4343, 0x551A8484, 0x1FF64D4D, 0x8A1C5959, 0x7D38B2B2,
+        0x57AC3333, 0xC718CFCF, 0x8DF40606, 0x74695353, 0xB7749B9B, 0xC4F59797, 0x9F56ADAD, 0x72DAE3E3,
+        0x7ED5EAEA, 0x154AF4F4, 0x229E8F8F, 0x12A2ABAB, 0x584E6262, 0x07E85F5F, 0x99E51D1D, 0x34392323,
+        0x6EC1F6F6, 0x50446C6C, 0xDE5D3232, 0x68724646, 0x6526A0A0, 0xBC93CDCD, 0xDB03DADA, 0xF8C6BABA,
+        0xC8FA9E9E, 0xA882D6D6, 0x2BCF6E6E, 0x40507070, 0xDCEB8585, 0xFE750A0A, 0x328A9393, 0xA48DDFDF,
+        0xCA4C2929, 0x10141C1C, 0x2173D7D7, 0xF0CCB4B4, 0xD309D4D4, 0x5D108A8A, 0x0FE25151, 0x00000000,
+        0x6F9A1919, 0x9DE01A1A, 0x368F9494, 0x42E6C7C7, 0x4AECC9C9, 0x5EFDD2D2, 0xC1AB7F7F, 0xE0D8A8A8
+    ];
+
+    /**
+     * M-Table
+     *
+     * @var array
+     */
+    private static $m2 = [
+        0xBC75BC32, 0xECF3EC21, 0x20C62043, 0xB3F4B3C9, 0xDADBDA03, 0x027B028B, 0xE2FBE22B, 0x9EC89EFA,
+        0xC94AC9EC, 0xD4D3D409, 0x18E6186B, 0x1E6B1E9F, 0x9845980E, 0xB27DB238, 0xA6E8A6D2, 0x264B26B7,
+        0x3CD63C57, 0x9332938A, 0x82D882EE, 0x52FD5298, 0x7B377BD4, 0xBB71BB37, 0x5BF15B97, 0x47E14783,
+        0x2430243C, 0x510F51E2, 0xBAF8BAC6, 0x4A1B4AF3, 0xBF87BF48, 0x0DFA0D70, 0xB006B0B3, 0x753F75DE,
+        0xD25ED2FD, 0x7DBA7D20, 0x66AE6631, 0x3A5B3AA3, 0x598A591C, 0x00000000, 0xCDBCCD93, 0x1A9D1AE0,
+        0xAE6DAE2C, 0x7FC17FAB, 0x2BB12BC7, 0xBE0EBEB9, 0xE080E0A0, 0x8A5D8A10, 0x3BD23B52, 0x64D564BA,
+        0xD8A0D888, 0xE784E7A5, 0x5F075FE8, 0x1B141B11, 0x2CB52CC2, 0xFC90FCB4, 0x312C3127, 0x80A38065,
+        0x73B2732A, 0x0C730C81, 0x794C795F, 0x6B546B41, 0x4B924B02, 0x53745369, 0x9436948F, 0x8351831F,
+        0x2A382A36, 0xC4B0C49C, 0x22BD22C8, 0xD55AD5F8, 0xBDFCBDC3, 0x48604878, 0xFF62FFCE, 0x4C964C07,
+        0x416C4177, 0xC742C7E6, 0xEBF7EB24, 0x1C101C14, 0x5D7C5D63, 0x36283622, 0x672767C0, 0xE98CE9AF,
+        0x441344F9, 0x149514EA, 0xF59CF5BB, 0xCFC7CF18, 0x3F243F2D, 0xC046C0E3, 0x723B72DB, 0x5470546C,
+        0x29CA294C, 0xF0E3F035, 0x088508FE, 0xC6CBC617, 0xF311F34F, 0x8CD08CE4, 0xA493A459, 0xCAB8CA96,
+        0x68A6683B, 0xB883B84D, 0x38203828, 0xE5FFE52E, 0xAD9FAD56, 0x0B770B84, 0xC8C3C81D, 0x99CC99FF,
+        0x580358ED, 0x196F199A, 0x0E080E0A, 0x95BF957E, 0x70407050, 0xF7E7F730, 0x6E2B6ECF, 0x1FE21F6E,
+        0xB579B53D, 0x090C090F, 0x61AA6134, 0x57825716, 0x9F419F0B, 0x9D3A9D80, 0x11EA1164, 0x25B925CD,
+        0xAFE4AFDD, 0x459A4508, 0xDFA4DF8D, 0xA397A35C, 0xEA7EEAD5, 0x35DA3558, 0xED7AEDD0, 0x431743FC,
+        0xF866F8CB, 0xFB94FBB1, 0x37A137D3, 0xFA1DFA40, 0xC23DC268, 0xB4F0B4CC, 0x32DE325D, 0x9CB39C71,
+        0x560B56E7, 0xE372E3DA, 0x87A78760, 0x151C151B, 0xF9EFF93A, 0x63D163BF, 0x345334A9, 0x9A3E9A85,
+        0xB18FB142, 0x7C337CD1, 0x8826889B, 0x3D5F3DA6, 0xA1ECA1D7, 0xE476E4DF, 0x812A8194, 0x91499101,
+        0x0F810FFB, 0xEE88EEAA, 0x16EE1661, 0xD721D773, 0x97C497F5, 0xA51AA5A8, 0xFEEBFE3F, 0x6DD96DB5,
+        0x78C578AE, 0xC539C56D, 0x1D991DE5, 0x76CD76A4, 0x3EAD3EDC, 0xCB31CB67, 0xB68BB647, 0xEF01EF5B,
+        0x1218121E, 0x602360C5, 0x6ADD6AB0, 0x4D1F4DF6, 0xCE4ECEE9, 0xDE2DDE7C, 0x55F9559D, 0x7E487E5A,
+        0x214F21B2, 0x03F2037A, 0xA065A026, 0x5E8E5E19, 0x5A785A66, 0x655C654B, 0x6258624E, 0xFD19FD45,
+        0x068D06F4, 0x40E54086, 0xF298F2BE, 0x335733AC, 0x17671790, 0x057F058E, 0xE805E85E, 0x4F644F7D,
+        0x89AF896A, 0x10631095, 0x74B6742F, 0x0AFE0A75, 0x5CF55C92, 0x9BB79B74, 0x2D3C2D33, 0x30A530D6,
+        0x2ECE2E49, 0x49E94989, 0x46684672, 0x77447755, 0xA8E0A8D8, 0x964D9604, 0x284328BD, 0xA969A929,
+        0xD929D979, 0x862E8691, 0xD1ACD187, 0xF415F44A, 0x8D598D15, 0xD6A8D682, 0xB90AB9BC, 0x429E420D,
+        0xF66EF6C1, 0x2F472FB8, 0xDDDFDD06, 0x23342339, 0xCC35CC62, 0xF16AF1C4, 0xC1CFC112, 0x85DC85EB,
+        0x8F228F9E, 0x71C971A1, 0x90C090F0, 0xAA9BAA53, 0x018901F1, 0x8BD48BE1, 0x4EED4E8C, 0x8EAB8E6F,
+        0xAB12ABA2, 0x6FA26F3E, 0xE60DE654, 0xDB52DBF2, 0x92BB927B, 0xB702B7B6, 0x692F69CA, 0x39A939D9,
+        0xD3D7D30C, 0xA761A723, 0xA21EA2AD, 0xC3B4C399, 0x6C506C44, 0x07040705, 0x04F6047F, 0x27C22746,
+        0xAC16ACA7, 0xD025D076, 0x50865013, 0xDC56DCF7, 0x8455841A, 0xE109E151, 0x7ABE7A25, 0x139113EF
+    ];
+
+    /**
+     * M-Table
+     *
+     * @var array
+     */
+    private static $m3 = [
+        0xD939A9D9, 0x90176790, 0x719CB371, 0xD2A6E8D2, 0x05070405, 0x9852FD98, 0x6580A365, 0xDFE476DF,
+        0x08459A08, 0x024B9202, 0xA0E080A0, 0x665A7866, 0xDDAFE4DD, 0xB06ADDB0, 0xBF63D1BF, 0x362A3836,
+        0x54E60D54, 0x4320C643, 0x62CC3562, 0xBEF298BE, 0x1E12181E, 0x24EBF724, 0xD7A1ECD7, 0x77416C77,
+        0xBD2843BD, 0x32BC7532, 0xD47B37D4, 0x9B88269B, 0x700DFA70, 0xF94413F9, 0xB1FB94B1, 0x5A7E485A,
+        0x7A03F27A, 0xE48CD0E4, 0x47B68B47, 0x3C24303C, 0xA5E784A5, 0x416B5441, 0x06DDDF06, 0xC56023C5,
+        0x45FD1945, 0xA33A5BA3, 0x68C23D68, 0x158D5915, 0x21ECF321, 0x3166AE31, 0x3E6FA23E, 0x16578216,
+        0x95106395, 0x5BEF015B, 0x4DB8834D, 0x91862E91, 0xB56DD9B5, 0x1F83511F, 0x53AA9B53, 0x635D7C63,
+        0x3B68A63B, 0x3FFEEB3F, 0xD630A5D6, 0x257ABE25, 0xA7AC16A7, 0x0F090C0F, 0x35F0E335, 0x23A76123,
+        0xF090C0F0, 0xAFE98CAF, 0x809D3A80, 0x925CF592, 0x810C7381, 0x27312C27, 0x76D02576, 0xE7560BE7,
+        0x7B92BB7B, 0xE9CE4EE9, 0xF10189F1, 0x9F1E6B9F, 0xA93453A9, 0xC4F16AC4, 0x99C3B499, 0x975BF197,
+        0x8347E183, 0x6B18E66B, 0xC822BDC8, 0x0E98450E, 0x6E1FE26E, 0xC9B3F4C9, 0x2F74B62F, 0xCBF866CB,
+        0xFF99CCFF, 0xEA1495EA, 0xED5803ED, 0xF7DC56F7, 0xE18BD4E1, 0x1B151C1B, 0xADA21EAD, 0x0CD3D70C,
+        0x2BE2FB2B, 0x1DC8C31D, 0x195E8E19, 0xC22CB5C2, 0x8949E989, 0x12C1CF12, 0x7E95BF7E, 0x207DBA20,
+        0x6411EA64, 0x840B7784, 0x6DC5396D, 0x6A89AF6A, 0xD17C33D1, 0xA171C9A1, 0xCEFF62CE, 0x37BB7137,
+        0xFB0F81FB, 0x3DB5793D, 0x51E10951, 0xDC3EADDC, 0x2D3F242D, 0xA476CDA4, 0x9D55F99D, 0xEE82D8EE,
+        0x8640E586, 0xAE78C5AE, 0xCD25B9CD, 0x04964D04, 0x55774455, 0x0A0E080A, 0x13508613, 0x30F7E730,
+        0xD337A1D3, 0x40FA1D40, 0x3461AA34, 0x8C4EED8C, 0xB3B006B3, 0x6C54706C, 0x2A73B22A, 0x523BD252,
+        0x0B9F410B, 0x8B027B8B, 0x88D8A088, 0x4FF3114F, 0x67CB3167, 0x4627C246, 0xC06727C0, 0xB4FC90B4,
+        0x28382028, 0x7F04F67F, 0x78486078, 0x2EE5FF2E, 0x074C9607, 0x4B655C4B, 0xC72BB1C7, 0x6F8EAB6F,
+        0x0D429E0D, 0xBBF59CBB, 0xF2DB52F2, 0xF34A1BF3, 0xA63D5FA6, 0x59A49359, 0xBCB90ABC, 0x3AF9EF3A,
+        0xEF1391EF, 0xFE0885FE, 0x01914901, 0x6116EE61, 0x7CDE2D7C, 0xB2214FB2, 0x42B18F42, 0xDB723BDB,
+        0xB82F47B8, 0x48BF8748, 0x2CAE6D2C, 0xE3C046E3, 0x573CD657, 0x859A3E85, 0x29A96929, 0x7D4F647D,
+        0x94812A94, 0x492ECE49, 0x17C6CB17, 0xCA692FCA, 0xC3BDFCC3, 0x5CA3975C, 0x5EE8055E, 0xD0ED7AD0,
+        0x87D1AC87, 0x8E057F8E, 0xBA64D5BA, 0xA8A51AA8, 0xB7264BB7, 0xB9BE0EB9, 0x6087A760, 0xF8D55AF8,
+        0x22362822, 0x111B1411, 0xDE753FDE, 0x79D92979, 0xAAEE88AA, 0x332D3C33, 0x5F794C5F, 0xB6B702B6,
+        0x96CAB896, 0x5835DA58, 0x9CC4B09C, 0xFC4317FC, 0x1A84551A, 0xF64D1FF6, 0x1C598A1C, 0x38B27D38,
+        0xAC3357AC, 0x18CFC718, 0xF4068DF4, 0x69537469, 0x749BB774, 0xF597C4F5, 0x56AD9F56, 0xDAE372DA,
+        0xD5EA7ED5, 0x4AF4154A, 0x9E8F229E, 0xA2AB12A2, 0x4E62584E, 0xE85F07E8, 0xE51D99E5, 0x39233439,
+        0xC1F66EC1, 0x446C5044, 0x5D32DE5D, 0x72466872, 0x26A06526, 0x93CDBC93, 0x03DADB03, 0xC6BAF8C6,
+        0xFA9EC8FA, 0x82D6A882, 0xCF6E2BCF, 0x50704050, 0xEB85DCEB, 0x750AFE75, 0x8A93328A, 0x8DDFA48D,
+        0x4C29CA4C, 0x141C1014, 0x73D72173, 0xCCB4F0CC, 0x09D4D309, 0x108A5D10, 0xE2510FE2, 0x00000000,
+        0x9A196F9A, 0xE01A9DE0, 0x8F94368F, 0xE6C742E6, 0xECC94AEC, 0xFDD25EFD, 0xAB7FC1AB, 0xD8A8E0D8
+    ];
+
+    /**
+     * The Key Schedule Array
+     *
+     * @var array
+     */
+    private $K = [];
+
+    /**
+     * The Key depended S-Table 0
+     *
+     * @var array
+     */
+    private $S0 = [];
+
+    /**
+     * The Key depended S-Table 1
+     *
+     * @var array
+     */
+    private $S1 = [];
+
+    /**
+     * The Key depended S-Table 2
+     *
+     * @var array
+     */
+    private $S2 = [];
+
+    /**
+     * The Key depended S-Table 3
+     *
+     * @var array
+     */
+    private $S3 = [];
+
+    /**
+     * Holds the last used key
+     *
+     * @var array
+     */
+    private $kl;
+
+    /**
+     * The Key Length (in bytes)
+     *
+     * @see Crypt_Twofish::setKeyLength()
+     * @var int
+     */
+    protected $key_length = 16;
+
+    /**
+     * Default Constructor.
+     *
+     * @param string $mode
+     * @throws BadModeException if an invalid / unsupported mode is provided
+     */
+    public function __construct($mode)
+    {
+        parent::__construct($mode);
+
+        if ($this->mode == self::MODE_STREAM) {
+            throw new BadModeException('Block ciphers cannot be ran in stream mode');
+        }
+    }
+
+    /**
+     * Initialize Static Variables
+     */
+    protected static function initialize_static_variables()
+    {
+        if (is_float(self::$m3[0])) {
+            self::$m0 = array_map('intval', self::$m0);
+            self::$m1 = array_map('intval', self::$m1);
+            self::$m2 = array_map('intval', self::$m2);
+            self::$m3 = array_map('intval', self::$m3);
+            self::$q0 = array_map('intval', self::$q0);
+            self::$q1 = array_map('intval', self::$q1);
+        }
+
+        parent::initialize_static_variables();
+    }
+
+    /**
+     * Sets the key length.
+     *
+     * Valid key lengths are 128, 192 or 256 bits
+     *
+     * @param int $length
+     */
+    public function setKeyLength($length)
+    {
+        switch ($length) {
+            case 128:
+            case 192:
+            case 256:
+                break;
+            default:
+                throw new \LengthException('Key of size ' . $length . ' not supported by this algorithm. Only keys of sizes 16, 24 or 32 supported');
+        }
+
+        parent::setKeyLength($length);
+    }
+
+    /**
+     * Sets the key.
+     *
+     * Rijndael supports five different key lengths
+     *
+     * @see setKeyLength()
+     * @param string $key
+     * @throws \LengthException if the key length isn't supported
+     */
+    public function setKey($key)
+    {
+        switch (strlen($key)) {
+            case 16:
+            case 24:
+            case 32:
+                break;
+            default:
+                throw new \LengthException('Key of size ' . strlen($key) . ' not supported by this algorithm. Only keys of sizes 16, 24 or 32 supported');
+        }
+
+        parent::setKey($key);
+    }
+
+    /**
+     * Setup the key (expansion)
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::_setupKey()
+     */
+    protected function setupKey()
+    {
+        if (isset($this->kl['key']) && $this->key === $this->kl['key']) {
+            // already expanded
+            return;
+        }
+        $this->kl = ['key' => $this->key];
+
+        /* Key expanding and generating the key-depended s-boxes */
+        $le_longs = unpack('V*', $this->key);
+        $key = unpack('C*', $this->key);
+        $m0 = self::$m0;
+        $m1 = self::$m1;
+        $m2 = self::$m2;
+        $m3 = self::$m3;
+        $q0 = self::$q0;
+        $q1 = self::$q1;
+
+        $K = $S0 = $S1 = $S2 = $S3 = [];
+
+        switch (strlen($this->key)) {
+            case 16:
+                list($s7, $s6, $s5, $s4) = $this->mdsrem($le_longs[1], $le_longs[2]);
+                list($s3, $s2, $s1, $s0) = $this->mdsrem($le_longs[3], $le_longs[4]);
+                for ($i = 0, $j = 1; $i < 40; $i += 2, $j += 2) {
+                    $A = $m0[$q0[$q0[$i] ^ $key[ 9]] ^ $key[1]] ^
+                         $m1[$q0[$q1[$i] ^ $key[10]] ^ $key[2]] ^
+                         $m2[$q1[$q0[$i] ^ $key[11]] ^ $key[3]] ^
+                         $m3[$q1[$q1[$i] ^ $key[12]] ^ $key[4]];
+                    $B = $m0[$q0[$q0[$j] ^ $key[13]] ^ $key[5]] ^
+                         $m1[$q0[$q1[$j] ^ $key[14]] ^ $key[6]] ^
+                         $m2[$q1[$q0[$j] ^ $key[15]] ^ $key[7]] ^
+                         $m3[$q1[$q1[$j] ^ $key[16]] ^ $key[8]];
+                    $B = ($B << 8) | ($B >> 24 & 0xff);
+                    $A = self::safe_intval($A + $B);
+                    $K[] = $A;
+                    $A = self::safe_intval($A + $B);
+                    $K[] = ($A << 9 | $A >> 23 & 0x1ff);
+                }
+                for ($i = 0; $i < 256; ++$i) {
+                    $S0[$i] = $m0[$q0[$q0[$i] ^ $s4] ^ $s0];
+                    $S1[$i] = $m1[$q0[$q1[$i] ^ $s5] ^ $s1];
+                    $S2[$i] = $m2[$q1[$q0[$i] ^ $s6] ^ $s2];
+                    $S3[$i] = $m3[$q1[$q1[$i] ^ $s7] ^ $s3];
+                }
+                break;
+            case 24:
+                list($sb, $sa, $s9, $s8) = $this->mdsrem($le_longs[1], $le_longs[2]);
+                list($s7, $s6, $s5, $s4) = $this->mdsrem($le_longs[3], $le_longs[4]);
+                list($s3, $s2, $s1, $s0) = $this->mdsrem($le_longs[5], $le_longs[6]);
+                for ($i = 0, $j = 1; $i < 40; $i += 2, $j += 2) {
+                    $A = $m0[$q0[$q0[$q1[$i] ^ $key[17]] ^ $key[ 9]] ^ $key[1]] ^
+                         $m1[$q0[$q1[$q1[$i] ^ $key[18]] ^ $key[10]] ^ $key[2]] ^
+                         $m2[$q1[$q0[$q0[$i] ^ $key[19]] ^ $key[11]] ^ $key[3]] ^
+                         $m3[$q1[$q1[$q0[$i] ^ $key[20]] ^ $key[12]] ^ $key[4]];
+                    $B = $m0[$q0[$q0[$q1[$j] ^ $key[21]] ^ $key[13]] ^ $key[5]] ^
+                         $m1[$q0[$q1[$q1[$j] ^ $key[22]] ^ $key[14]] ^ $key[6]] ^
+                         $m2[$q1[$q0[$q0[$j] ^ $key[23]] ^ $key[15]] ^ $key[7]] ^
+                         $m3[$q1[$q1[$q0[$j] ^ $key[24]] ^ $key[16]] ^ $key[8]];
+                    $B = ($B << 8) | ($B >> 24 & 0xff);
+                    $A = self::safe_intval($A + $B);
+                    $K[] = $A;
+                    $A = self::safe_intval($A + $B);
+                    $K[] = ($A << 9 | $A >> 23 & 0x1ff);
+                }
+                for ($i = 0; $i < 256; ++$i) {
+                    $S0[$i] = $m0[$q0[$q0[$q1[$i] ^ $s8] ^ $s4] ^ $s0];
+                    $S1[$i] = $m1[$q0[$q1[$q1[$i] ^ $s9] ^ $s5] ^ $s1];
+                    $S2[$i] = $m2[$q1[$q0[$q0[$i] ^ $sa] ^ $s6] ^ $s2];
+                    $S3[$i] = $m3[$q1[$q1[$q0[$i] ^ $sb] ^ $s7] ^ $s3];
+                }
+                break;
+            default: // 32
+                list($sf, $se, $sd, $sc) = $this->mdsrem($le_longs[1], $le_longs[2]);
+                list($sb, $sa, $s9, $s8) = $this->mdsrem($le_longs[3], $le_longs[4]);
+                list($s7, $s6, $s5, $s4) = $this->mdsrem($le_longs[5], $le_longs[6]);
+                list($s3, $s2, $s1, $s0) = $this->mdsrem($le_longs[7], $le_longs[8]);
+                for ($i = 0, $j = 1; $i < 40; $i += 2, $j += 2) {
+                    $A = $m0[$q0[$q0[$q1[$q1[$i] ^ $key[25]] ^ $key[17]] ^ $key[ 9]] ^ $key[1]] ^
+                         $m1[$q0[$q1[$q1[$q0[$i] ^ $key[26]] ^ $key[18]] ^ $key[10]] ^ $key[2]] ^
+                         $m2[$q1[$q0[$q0[$q0[$i] ^ $key[27]] ^ $key[19]] ^ $key[11]] ^ $key[3]] ^
+                         $m3[$q1[$q1[$q0[$q1[$i] ^ $key[28]] ^ $key[20]] ^ $key[12]] ^ $key[4]];
+                    $B = $m0[$q0[$q0[$q1[$q1[$j] ^ $key[29]] ^ $key[21]] ^ $key[13]] ^ $key[5]] ^
+                         $m1[$q0[$q1[$q1[$q0[$j] ^ $key[30]] ^ $key[22]] ^ $key[14]] ^ $key[6]] ^
+                         $m2[$q1[$q0[$q0[$q0[$j] ^ $key[31]] ^ $key[23]] ^ $key[15]] ^ $key[7]] ^
+                         $m3[$q1[$q1[$q0[$q1[$j] ^ $key[32]] ^ $key[24]] ^ $key[16]] ^ $key[8]];
+                    $B = ($B << 8) | ($B >> 24 & 0xff);
+                    $A = self::safe_intval($A + $B);
+                    $K[] = $A;
+                    $A = self::safe_intval($A + $B);
+                    $K[] = ($A << 9 | $A >> 23 & 0x1ff);
+                }
+                for ($i = 0; $i < 256; ++$i) {
+                    $S0[$i] = $m0[$q0[$q0[$q1[$q1[$i] ^ $sc] ^ $s8] ^ $s4] ^ $s0];
+                    $S1[$i] = $m1[$q0[$q1[$q1[$q0[$i] ^ $sd] ^ $s9] ^ $s5] ^ $s1];
+                    $S2[$i] = $m2[$q1[$q0[$q0[$q0[$i] ^ $se] ^ $sa] ^ $s6] ^ $s2];
+                    $S3[$i] = $m3[$q1[$q1[$q0[$q1[$i] ^ $sf] ^ $sb] ^ $s7] ^ $s3];
+                }
+        }
+
+        $this->K  = $K;
+        $this->S0 = $S0;
+        $this->S1 = $S1;
+        $this->S2 = $S2;
+        $this->S3 = $S3;
+    }
+
+    /**
+     * _mdsrem function using by the twofish cipher algorithm
+     *
+     * @param string $A
+     * @param string $B
+     * @return array
+     */
+    private function mdsrem($A, $B)
+    {
+        // No gain by unrolling this loop.
+        for ($i = 0; $i < 8; ++$i) {
+            // Get most significant coefficient.
+            $t = 0xff & ($B >> 24);
+
+            // Shift the others up.
+            $B = ($B << 8) | (0xff & ($A >> 24));
+            $A <<= 8;
+
+            $u = $t << 1;
+
+            // Subtract the modular polynomial on overflow.
+            if ($t & 0x80) {
+                $u ^= 0x14d;
+            }
+
+            // Remove t * (a * x^2 + 1).
+            $B ^= $t ^ ($u << 16);
+
+            // Form u = a*t + t/a = t*(a + 1/a).
+            $u ^= 0x7fffffff & ($t >> 1);
+
+            // Add the modular polynomial on underflow.
+            if ($t & 0x01) {
+                $u ^= 0xa6 ;
+            }
+
+            // Remove t * (a + 1/a) * (x^3 + x).
+            $B ^= ($u << 24) | ($u << 8);
+        }
+
+        return [
+            0xff & $B >> 24,
+            0xff & $B >> 16,
+            0xff & $B >>  8,
+            0xff & $B];
+    }
+
+    /**
+     * Encrypts a block
+     *
+     * @param string $in
+     * @return string
+     */
+    protected function encryptBlock($in)
+    {
+        $S0 = $this->S0;
+        $S1 = $this->S1;
+        $S2 = $this->S2;
+        $S3 = $this->S3;
+        $K  = $this->K;
+
+        $in = unpack("V4", $in);
+        $R0 = $K[0] ^ $in[1];
+        $R1 = $K[1] ^ $in[2];
+        $R2 = $K[2] ^ $in[3];
+        $R3 = $K[3] ^ $in[4];
+
+        $ki = 7;
+        while ($ki < 39) {
+            $t0 = $S0[ $R0        & 0xff] ^
+                  $S1[($R0 >>  8) & 0xff] ^
+                  $S2[($R0 >> 16) & 0xff] ^
+                  $S3[($R0 >> 24) & 0xff];
+            $t1 = $S0[($R1 >> 24) & 0xff] ^
+                  $S1[ $R1        & 0xff] ^
+                  $S2[($R1 >>  8) & 0xff] ^
+                  $S3[($R1 >> 16) & 0xff];
+            $R2 ^= self::safe_intval($t0 + $t1 + $K[++$ki]);
+            $R2 = ($R2 >> 1 & 0x7fffffff) | ($R2 << 31);
+            $R3 = ((($R3 >> 31) & 1) | ($R3 << 1)) ^ self::safe_intval($t0 + ($t1 << 1) + $K[++$ki]);
+
+            $t0 = $S0[ $R2        & 0xff] ^
+                  $S1[($R2 >>  8) & 0xff] ^
+                  $S2[($R2 >> 16) & 0xff] ^
+                  $S3[($R2 >> 24) & 0xff];
+            $t1 = $S0[($R3 >> 24) & 0xff] ^
+                  $S1[ $R3        & 0xff] ^
+                  $S2[($R3 >>  8) & 0xff] ^
+                  $S3[($R3 >> 16) & 0xff];
+            $R0 ^= self::safe_intval($t0 + $t1 + $K[++$ki]);
+            $R0 = ($R0 >> 1 & 0x7fffffff) | ($R0 << 31);
+            $R1 = ((($R1 >> 31) & 1) | ($R1 << 1)) ^ self::safe_intval($t0 + ($t1 << 1) + $K[++$ki]);
+        }
+
+        // @codingStandardsIgnoreStart
+        return pack("V4", $K[4] ^ $R2,
+                          $K[5] ^ $R3,
+                          $K[6] ^ $R0,
+                          $K[7] ^ $R1);
+        // @codingStandardsIgnoreEnd
+    }
+
+    /**
+     * Decrypts a block
+     *
+     * @param string $in
+     * @return string
+     */
+    protected function decryptBlock($in)
+    {
+        $S0 = $this->S0;
+        $S1 = $this->S1;
+        $S2 = $this->S2;
+        $S3 = $this->S3;
+        $K  = $this->K;
+
+        $in = unpack("V4", $in);
+        $R0 = $K[4] ^ $in[1];
+        $R1 = $K[5] ^ $in[2];
+        $R2 = $K[6] ^ $in[3];
+        $R3 = $K[7] ^ $in[4];
+
+        $ki = 40;
+        while ($ki > 8) {
+            $t0 = $S0[$R0       & 0xff] ^
+                  $S1[$R0 >>  8 & 0xff] ^
+                  $S2[$R0 >> 16 & 0xff] ^
+                  $S3[$R0 >> 24 & 0xff];
+            $t1 = $S0[$R1 >> 24 & 0xff] ^
+                  $S1[$R1       & 0xff] ^
+                  $S2[$R1 >>  8 & 0xff] ^
+                  $S3[$R1 >> 16 & 0xff];
+            $R3 ^= self::safe_intval($t0 + ($t1 << 1) + $K[--$ki]);
+            $R3 = $R3 >> 1 & 0x7fffffff | $R3 << 31;
+            $R2 = ($R2 >> 31 & 0x1 | $R2 << 1) ^ self::safe_intval($t0 + $t1 + $K[--$ki]);
+
+            $t0 = $S0[$R2       & 0xff] ^
+                  $S1[$R2 >>  8 & 0xff] ^
+                  $S2[$R2 >> 16 & 0xff] ^
+                  $S3[$R2 >> 24 & 0xff];
+            $t1 = $S0[$R3 >> 24 & 0xff] ^
+                  $S1[$R3       & 0xff] ^
+                  $S2[$R3 >>  8 & 0xff] ^
+                  $S3[$R3 >> 16 & 0xff];
+            $R1 ^= self::safe_intval($t0 + ($t1 << 1) + $K[--$ki]);
+            $R1 = $R1 >> 1 & 0x7fffffff | $R1 << 31;
+            $R0 = ($R0 >> 31 & 0x1 | $R0 << 1) ^ self::safe_intval($t0 + $t1 + $K[--$ki]);
+        }
+
+        // @codingStandardsIgnoreStart
+        return pack("V4", $K[0] ^ $R2,
+                          $K[1] ^ $R3,
+                          $K[2] ^ $R0,
+                          $K[3] ^ $R1);
+        // @codingStandardsIgnoreEnd
+    }
+
+    /**
+     * Setup the performance-optimized function for de/encrypt()
+     *
+     * @see \phpseclib3\Crypt\Common\SymmetricKey::_setupInlineCrypt()
+     */
+    protected function setupInlineCrypt()
+    {
+        $K = $this->K;
+        $init_crypt = '
+            static $S0, $S1, $S2, $S3;
+            if (!$S0) {
+                for ($i = 0; $i < 256; ++$i) {
+                    $S0[] = (int)$this->S0[$i];
+                    $S1[] = (int)$this->S1[$i];
+                    $S2[] = (int)$this->S2[$i];
+                    $S3[] = (int)$this->S3[$i];
+                }
+            }
+        ';
+
+        $safeint = self::safe_intval_inline();
+
+        // Generating encrypt code:
+        $encrypt_block = '
+            $in = unpack("V4", $in);
+            $R0 = ' . $K[0] . ' ^ $in[1];
+            $R1 = ' . $K[1] . ' ^ $in[2];
+            $R2 = ' . $K[2] . ' ^ $in[3];
+            $R3 = ' . $K[3] . ' ^ $in[4];
+        ';
+        for ($ki = 7, $i = 0; $i < 8; ++$i) {
+            $encrypt_block .= '
+                $t0 = $S0[ $R0        & 0xff] ^
+                      $S1[($R0 >>  8) & 0xff] ^
+                      $S2[($R0 >> 16) & 0xff] ^
+                      $S3[($R0 >> 24) & 0xff];
+                $t1 = $S0[($R1 >> 24) & 0xff] ^
+                      $S1[ $R1        & 0xff] ^
+                      $S2[($R1 >>  8) & 0xff] ^
+                      $S3[($R1 >> 16) & 0xff];
+                    $R2^= ' . sprintf($safeint, '$t0 + $t1 + ' . $K[++$ki]) . ';
+                $R2 = ($R2 >> 1 & 0x7fffffff) | ($R2 << 31);
+                $R3 = ((($R3 >> 31) & 1) | ($R3 << 1)) ^ ' . sprintf($safeint, '($t0 + ($t1 << 1) + ' . $K[++$ki] . ')') . ';
+
+                $t0 = $S0[ $R2        & 0xff] ^
+                      $S1[($R2 >>  8) & 0xff] ^
+                      $S2[($R2 >> 16) & 0xff] ^
+                      $S3[($R2 >> 24) & 0xff];
+                $t1 = $S0[($R3 >> 24) & 0xff] ^
+                      $S1[ $R3        & 0xff] ^
+                      $S2[($R3 >>  8) & 0xff] ^
+                      $S3[($R3 >> 16) & 0xff];
+                $R0^= ' . sprintf($safeint, '($t0 + $t1 + ' . $K[++$ki] . ')') . ';
+                $R0 = ($R0 >> 1 & 0x7fffffff) | ($R0 << 31);
+                $R1 = ((($R1 >> 31) & 1) | ($R1 << 1)) ^ ' . sprintf($safeint, '($t0 + ($t1 << 1) + ' . $K[++$ki] . ')') . ';
+            ';
+        }
+        $encrypt_block .= '
+            $in = pack("V4", ' . $K[4] . ' ^ $R2,
+                             ' . $K[5] . ' ^ $R3,
+                             ' . $K[6] . ' ^ $R0,
+                             ' . $K[7] . ' ^ $R1);
+        ';
+
+        // Generating decrypt code:
+        $decrypt_block = '
+            $in = unpack("V4", $in);
+            $R0 = ' . $K[4] . ' ^ $in[1];
+            $R1 = ' . $K[5] . ' ^ $in[2];
+            $R2 = ' . $K[6] . ' ^ $in[3];
+            $R3 = ' . $K[7] . ' ^ $in[4];
+        ';
+        for ($ki = 40, $i = 0; $i < 8; ++$i) {
+            $decrypt_block .= '
+                $t0 = $S0[$R0       & 0xff] ^
+                      $S1[$R0 >>  8 & 0xff] ^
+                      $S2[$R0 >> 16 & 0xff] ^
+                      $S3[$R0 >> 24 & 0xff];
+                $t1 = $S0[$R1 >> 24 & 0xff] ^
+                      $S1[$R1       & 0xff] ^
+                      $S2[$R1 >>  8 & 0xff] ^
+                      $S3[$R1 >> 16 & 0xff];
+                $R3^= ' . sprintf($safeint, '$t0 + ($t1 << 1) + ' . $K[--$ki]) . ';
+                $R3 = $R3 >> 1 & 0x7fffffff | $R3 << 31;
+                $R2 = ($R2 >> 31 & 0x1 | $R2 << 1) ^ ' . sprintf($safeint, '($t0 + $t1 + ' . $K[--$ki] . ')') . ';
+
+                $t0 = $S0[$R2       & 0xff] ^
+                      $S1[$R2 >>  8 & 0xff] ^
+                      $S2[$R2 >> 16 & 0xff] ^
+                      $S3[$R2 >> 24 & 0xff];
+                $t1 = $S0[$R3 >> 24 & 0xff] ^
+                      $S1[$R3       & 0xff] ^
+                      $S2[$R3 >>  8 & 0xff] ^
+                      $S3[$R3 >> 16 & 0xff];
+                $R1^= ' . sprintf($safeint, '$t0 + ($t1 << 1) + ' . $K[--$ki]) . ';
+                $R1 = $R1 >> 1 & 0x7fffffff | $R1 << 31;
+                $R0 = ($R0 >> 31 & 0x1 | $R0 << 1) ^ ' . sprintf($safeint, '($t0 + $t1 + ' . $K[--$ki] . ')') . ';
+            ';
+        }
+        $decrypt_block .= '
+            $in = pack("V4", ' . $K[0] . ' ^ $R2,
+                             ' . $K[1] . ' ^ $R3,
+                             ' . $K[2] . ' ^ $R0,
+                             ' . $K[3] . ' ^ $R1);
+        ';
+
+        $this->inline_crypt = $this->createInlineCryptFunction(
+            [
+               'init_crypt'    => $init_crypt,
+               'init_encrypt'  => '',
+               'init_decrypt'  => '',
+               'encrypt_block' => $encrypt_block,
+               'decrypt_block' => $decrypt_block
+            ]
+        );
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Exception/BadConfigurationException.php b/vendor/phpseclib/phpseclib/phpseclib/Exception/BadConfigurationException.php
new file mode 100644
index 0000000..1aabcae
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Exception/BadConfigurationException.php
@@ -0,0 +1,23 @@
+<?php
+
+/**
+ * BadConfigurationException
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Exception;
+
+/**
+ * BadConfigurationException
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+class BadConfigurationException extends \RuntimeException
+{
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Exception/BadDecryptionException.php b/vendor/phpseclib/phpseclib/phpseclib/Exception/BadDecryptionException.php
new file mode 100644
index 0000000..88331dc
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Exception/BadDecryptionException.php
@@ -0,0 +1,23 @@
+<?php
+
+/**
+ * BadDecryptionException
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Exception;
+
+/**
+ * BadDecryptionException
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+class BadDecryptionException extends \RuntimeException
+{
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Exception/BadModeException.php b/vendor/phpseclib/phpseclib/phpseclib/Exception/BadModeException.php
new file mode 100644
index 0000000..87689b2
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Exception/BadModeException.php
@@ -0,0 +1,23 @@
+<?php
+
+/**
+ * BadModeException
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Exception;
+
+/**
+ * BadModeException
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+class BadModeException extends \RuntimeException
+{
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Exception/ConnectionClosedException.php b/vendor/phpseclib/phpseclib/phpseclib/Exception/ConnectionClosedException.php
new file mode 100644
index 0000000..6aaccba
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Exception/ConnectionClosedException.php
@@ -0,0 +1,23 @@
+<?php
+
+/**
+ * ConnectionClosedException
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Exception;
+
+/**
+ * ConnectionClosedException
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+class ConnectionClosedException extends \RuntimeException
+{
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Exception/FileNotFoundException.php b/vendor/phpseclib/phpseclib/phpseclib/Exception/FileNotFoundException.php
new file mode 100644
index 0000000..66e7270
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Exception/FileNotFoundException.php
@@ -0,0 +1,23 @@
+<?php
+
+/**
+ * FileNotFoundException
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Exception;
+
+/**
+ * FileNotFoundException
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+class FileNotFoundException extends \RuntimeException
+{
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Exception/InconsistentSetupException.php b/vendor/phpseclib/phpseclib/phpseclib/Exception/InconsistentSetupException.php
new file mode 100644
index 0000000..23c38fb
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Exception/InconsistentSetupException.php
@@ -0,0 +1,23 @@
+<?php
+
+/**
+ * InconsistentSetupException
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Exception;
+
+/**
+ * InconsistentSetupException
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+class InconsistentSetupException extends \RuntimeException
+{
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Exception/InsufficientSetupException.php b/vendor/phpseclib/phpseclib/phpseclib/Exception/InsufficientSetupException.php
new file mode 100644
index 0000000..4f4114d
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Exception/InsufficientSetupException.php
@@ -0,0 +1,23 @@
+<?php
+
+/**
+ * InsufficientSetupException
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Exception;
+
+/**
+ * InsufficientSetupException
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+class InsufficientSetupException extends \RuntimeException
+{
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Exception/NoKeyLoadedException.php b/vendor/phpseclib/phpseclib/phpseclib/Exception/NoKeyLoadedException.php
new file mode 100644
index 0000000..7ec2fe9
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Exception/NoKeyLoadedException.php
@@ -0,0 +1,23 @@
+<?php
+
+/**
+ * NoKeyLoadedException
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Exception;
+
+/**
+ * NoKeyLoadedException
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+class NoKeyLoadedException extends \RuntimeException
+{
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Exception/NoSupportedAlgorithmsException.php b/vendor/phpseclib/phpseclib/phpseclib/Exception/NoSupportedAlgorithmsException.php
new file mode 100644
index 0000000..b3ea8f3
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Exception/NoSupportedAlgorithmsException.php
@@ -0,0 +1,23 @@
+<?php
+
+/**
+ * NoSupportedAlgorithmsException
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Exception;
+
+/**
+ * NoSupportedAlgorithmsException
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+class NoSupportedAlgorithmsException extends \RuntimeException
+{
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Exception/UnableToConnectException.php b/vendor/phpseclib/phpseclib/phpseclib/Exception/UnableToConnectException.php
new file mode 100644
index 0000000..bfa005b
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Exception/UnableToConnectException.php
@@ -0,0 +1,23 @@
+<?php
+
+/**
+ * UnableToConnectException
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Exception;
+
+/**
+ * UnableToConnectException
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+class UnableToConnectException extends \RuntimeException
+{
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Exception/UnsupportedAlgorithmException.php b/vendor/phpseclib/phpseclib/phpseclib/Exception/UnsupportedAlgorithmException.php
new file mode 100644
index 0000000..210a9a5
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Exception/UnsupportedAlgorithmException.php
@@ -0,0 +1,23 @@
+<?php
+
+/**
+ * UnsupportedAlgorithmException
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Exception;
+
+/**
+ * UnsupportedAlgorithmException
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+class UnsupportedAlgorithmException extends \RuntimeException
+{
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Exception/UnsupportedCurveException.php b/vendor/phpseclib/phpseclib/phpseclib/Exception/UnsupportedCurveException.php
new file mode 100644
index 0000000..9915215
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Exception/UnsupportedCurveException.php
@@ -0,0 +1,23 @@
+<?php
+
+/**
+ * UnsupportedCurveException
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Exception;
+
+/**
+ * UnsupportedCurveException
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+class UnsupportedCurveException extends \RuntimeException
+{
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Exception/UnsupportedFormatException.php b/vendor/phpseclib/phpseclib/phpseclib/Exception/UnsupportedFormatException.php
new file mode 100644
index 0000000..e207d7e
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Exception/UnsupportedFormatException.php
@@ -0,0 +1,23 @@
+<?php
+
+/**
+ * UnsupportedFormatException
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Exception;
+
+/**
+ * UnsupportedFormatException
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+class UnsupportedFormatException extends \RuntimeException
+{
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Exception/UnsupportedOperationException.php b/vendor/phpseclib/phpseclib/phpseclib/Exception/UnsupportedOperationException.php
new file mode 100644
index 0000000..9a11544
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Exception/UnsupportedOperationException.php
@@ -0,0 +1,23 @@
+<?php
+
+/**
+ * UnsupportedOperationException
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Exception;
+
+/**
+ * UnsupportedOperationException
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+class UnsupportedOperationException extends \RuntimeException
+{
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ANSI.php b/vendor/phpseclib/phpseclib/phpseclib/File/ANSI.php
new file mode 100644
index 0000000..5803a37
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ANSI.php
@@ -0,0 +1,551 @@
+<?php
+
+/**
+ * Pure-PHP ANSI Decoder
+ *
+ * PHP version 5
+ *
+ * If you call read() in \phpseclib3\Net\SSH2 you may get {@link http://en.wikipedia.org/wiki/ANSI_escape_code ANSI escape codes} back.
+ * They'd look like chr(0x1B) . '[00m' or whatever (0x1B = ESC).  They tell a
+ * {@link http://en.wikipedia.org/wiki/Terminal_emulator terminal emulator} how to format the characters, what
+ * color to display them in, etc. \phpseclib3\File\ANSI is a {@link http://en.wikipedia.org/wiki/VT100 VT100} terminal emulator.
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2012 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File;
+
+/**
+ * Pure-PHP ANSI Decoder
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+class ANSI
+{
+    /**
+     * Max Width
+     *
+     * @var int
+     */
+    private $max_x;
+
+    /**
+     * Max Height
+     *
+     * @var int
+     */
+    private $max_y;
+
+    /**
+     * Max History
+     *
+     * @var int
+     */
+    private $max_history;
+
+    /**
+     * History
+     *
+     * @var array
+     */
+    private $history;
+
+    /**
+     * History Attributes
+     *
+     * @var array
+     */
+    private $history_attrs;
+
+    /**
+     * Current Column
+     *
+     * @var int
+     */
+    private $x;
+
+    /**
+     * Current Row
+     *
+     * @var int
+     */
+    private $y;
+
+    /**
+     * Old Column
+     *
+     * @var int
+     */
+    private $old_x;
+
+    /**
+     * Old Row
+     *
+     * @var int
+     */
+    private $old_y;
+
+    /**
+     * An empty attribute cell
+     *
+     * @var object
+     */
+    private $base_attr_cell;
+
+    /**
+     * The current attribute cell
+     *
+     * @var object
+     */
+    private $attr_cell;
+
+    /**
+     * An empty attribute row
+     *
+     * @var array
+     */
+    private $attr_row;
+
+    /**
+     * The current screen text
+     *
+     * @var list<string>
+     */
+    private $screen;
+
+    /**
+     * The current screen attributes
+     *
+     * @var array
+     */
+    private $attrs;
+
+    /**
+     * Current ANSI code
+     *
+     * @var string
+     */
+    private $ansi;
+
+    /**
+     * Tokenization
+     *
+     * @var array
+     */
+    private $tokenization;
+
+    /**
+     * Default Constructor.
+     *
+     * @return \phpseclib3\File\ANSI
+     */
+    public function __construct()
+    {
+        $attr_cell = new \stdClass();
+        $attr_cell->bold = false;
+        $attr_cell->underline = false;
+        $attr_cell->blink = false;
+        $attr_cell->background = 'black';
+        $attr_cell->foreground = 'white';
+        $attr_cell->reverse = false;
+        $this->base_attr_cell = clone $attr_cell;
+        $this->attr_cell = clone $attr_cell;
+
+        $this->setHistory(200);
+        $this->setDimensions(80, 24);
+    }
+
+    /**
+     * Set terminal width and height
+     *
+     * Resets the screen as well
+     *
+     * @param int $x
+     * @param int $y
+     */
+    public function setDimensions($x, $y)
+    {
+        $this->max_x = $x - 1;
+        $this->max_y = $y - 1;
+        $this->x = $this->y = 0;
+        $this->history = $this->history_attrs = [];
+        $this->attr_row = array_fill(0, $this->max_x + 2, $this->base_attr_cell);
+        $this->screen = array_fill(0, $this->max_y + 1, '');
+        $this->attrs = array_fill(0, $this->max_y + 1, $this->attr_row);
+        $this->ansi = '';
+    }
+
+    /**
+     * Set the number of lines that should be logged past the terminal height
+     *
+     * @param int $history
+     */
+    public function setHistory($history)
+    {
+        $this->max_history = $history;
+    }
+
+    /**
+     * Load a string
+     *
+     * @param string $source
+     */
+    public function loadString($source)
+    {
+        $this->setDimensions($this->max_x + 1, $this->max_y + 1);
+        $this->appendString($source);
+    }
+
+    /**
+     * Appdend a string
+     *
+     * @param string $source
+     */
+    public function appendString($source)
+    {
+        $this->tokenization = [''];
+        for ($i = 0; $i < strlen($source); $i++) {
+            if (strlen($this->ansi)) {
+                $this->ansi .= $source[$i];
+                $chr = ord($source[$i]);
+                // http://en.wikipedia.org/wiki/ANSI_escape_code#Sequence_elements
+                // single character CSI's not currently supported
+                switch (true) {
+                    case $this->ansi == "\x1B=":
+                        $this->ansi = '';
+                        continue 2;
+                    case strlen($this->ansi) == 2 && $chr >= 64 && $chr <= 95 && $chr != ord('['):
+                    case strlen($this->ansi) > 2 && $chr >= 64 && $chr <= 126:
+                        break;
+                    default:
+                        continue 2;
+                }
+                $this->tokenization[] = $this->ansi;
+                $this->tokenization[] = '';
+                // http://ascii-table.com/ansi-escape-sequences-vt-100.php
+                switch ($this->ansi) {
+                    case "\x1B[H": // Move cursor to upper left corner
+                        $this->old_x = $this->x;
+                        $this->old_y = $this->y;
+                        $this->x = $this->y = 0;
+                        break;
+                    case "\x1B[J": // Clear screen from cursor down
+                        $this->history = array_merge($this->history, array_slice(array_splice($this->screen, $this->y + 1), 0, $this->old_y));
+                        $this->screen = array_merge($this->screen, array_fill($this->y, $this->max_y, ''));
+
+                        $this->history_attrs = array_merge($this->history_attrs, array_slice(array_splice($this->attrs, $this->y + 1), 0, $this->old_y));
+                        $this->attrs = array_merge($this->attrs, array_fill($this->y, $this->max_y, $this->attr_row));
+
+                        if (count($this->history) == $this->max_history) {
+                            array_shift($this->history);
+                            array_shift($this->history_attrs);
+                        }
+                        // fall-through
+                    case "\x1B[K": // Clear screen from cursor right
+                        $this->screen[$this->y] = substr($this->screen[$this->y], 0, $this->x);
+
+                        array_splice($this->attrs[$this->y], $this->x + 1, $this->max_x - $this->x, array_fill($this->x, $this->max_x - ($this->x - 1), $this->base_attr_cell));
+                        break;
+                    case "\x1B[2K": // Clear entire line
+                        $this->screen[$this->y] = str_repeat(' ', $this->x);
+                        $this->attrs[$this->y] = $this->attr_row;
+                        break;
+                    case "\x1B[?1h": // set cursor key to application
+                    case "\x1B[?25h": // show the cursor
+                    case "\x1B(B": // set united states g0 character set
+                        break;
+                    case "\x1BE": // Move to next line
+                        $this->newLine();
+                        $this->x = 0;
+                        break;
+                    default:
+                        switch (true) {
+                            case preg_match('#\x1B\[(\d+)B#', $this->ansi, $match): // Move cursor down n lines
+                                $this->old_y = $this->y;
+                                $this->y += (int) $match[1];
+                                break;
+                            case preg_match('#\x1B\[(\d+);(\d+)H#', $this->ansi, $match): // Move cursor to screen location v,h
+                                $this->old_x = $this->x;
+                                $this->old_y = $this->y;
+                                $this->x = $match[2] - 1;
+                                $this->y = (int) $match[1] - 1;
+                                break;
+                            case preg_match('#\x1B\[(\d+)C#', $this->ansi, $match): // Move cursor right n lines
+                                $this->old_x = $this->x;
+                                $this->x += $match[1];
+                                break;
+                            case preg_match('#\x1B\[(\d+)D#', $this->ansi, $match): // Move cursor left n lines
+                                $this->old_x = $this->x;
+                                $this->x -= $match[1];
+                                if ($this->x < 0) {
+                                    $this->x = 0;
+                                }
+                                break;
+                            case preg_match('#\x1B\[(\d+);(\d+)r#', $this->ansi, $match): // Set top and bottom lines of a window
+                                break;
+                            case preg_match('#\x1B\[(\d*(?:;\d*)*)m#', $this->ansi, $match): // character attributes
+                                $attr_cell = &$this->attr_cell;
+                                $mods = explode(';', $match[1]);
+                                foreach ($mods as $mod) {
+                                    switch ($mod) {
+                                        case '':
+                                        case '0': // Turn off character attributes
+                                            $attr_cell = clone $this->base_attr_cell;
+                                            break;
+                                        case '1': // Turn bold mode on
+                                            $attr_cell->bold = true;
+                                            break;
+                                        case '4': // Turn underline mode on
+                                            $attr_cell->underline = true;
+                                            break;
+                                        case '5': // Turn blinking mode on
+                                            $attr_cell->blink = true;
+                                            break;
+                                        case '7': // Turn reverse video on
+                                            $attr_cell->reverse = !$attr_cell->reverse;
+                                            $temp = $attr_cell->background;
+                                            $attr_cell->background = $attr_cell->foreground;
+                                            $attr_cell->foreground = $temp;
+                                            break;
+                                        default: // set colors
+                                            //$front = $attr_cell->reverse ? &$attr_cell->background : &$attr_cell->foreground;
+                                            $front = &$attr_cell->{ $attr_cell->reverse ? 'background' : 'foreground' };
+                                            //$back = $attr_cell->reverse ? &$attr_cell->foreground : &$attr_cell->background;
+                                            $back = &$attr_cell->{ $attr_cell->reverse ? 'foreground' : 'background' };
+                                            switch ($mod) {
+                                                // @codingStandardsIgnoreStart
+                                                case '30': $front = 'black'; break;
+                                                case '31': $front = 'red'; break;
+                                                case '32': $front = 'green'; break;
+                                                case '33': $front = 'yellow'; break;
+                                                case '34': $front = 'blue'; break;
+                                                case '35': $front = 'magenta'; break;
+                                                case '36': $front = 'cyan'; break;
+                                                case '37': $front = 'white'; break;
+
+                                                case '40': $back = 'black'; break;
+                                                case '41': $back = 'red'; break;
+                                                case '42': $back = 'green'; break;
+                                                case '43': $back = 'yellow'; break;
+                                                case '44': $back = 'blue'; break;
+                                                case '45': $back = 'magenta'; break;
+                                                case '46': $back = 'cyan'; break;
+                                                case '47': $back = 'white'; break;
+                                                // @codingStandardsIgnoreEnd
+
+                                                default:
+                                                    //user_error('Unsupported attribute: ' . $mod);
+                                                    $this->ansi = '';
+                                                    break 2;
+                                            }
+                                    }
+                                }
+                                break;
+                            default:
+                                //user_error("{$this->ansi} is unsupported\r\n");
+                        }
+                }
+                $this->ansi = '';
+                continue;
+            }
+
+            $this->tokenization[count($this->tokenization) - 1] .= $source[$i];
+            switch ($source[$i]) {
+                case "\r":
+                    $this->x = 0;
+                    break;
+                case "\n":
+                    $this->newLine();
+                    break;
+                case "\x08": // backspace
+                    if ($this->x) {
+                        $this->x--;
+                        $this->attrs[$this->y][$this->x] = clone $this->base_attr_cell;
+                        $this->screen[$this->y] = substr_replace(
+                            $this->screen[$this->y],
+                            $source[$i],
+                            $this->x,
+                            1
+                        );
+                    }
+                    break;
+                case "\x0F": // shift
+                    break;
+                case "\x1B": // start ANSI escape code
+                    $this->tokenization[count($this->tokenization) - 1] = substr($this->tokenization[count($this->tokenization) - 1], 0, -1);
+                    //if (!strlen($this->tokenization[count($this->tokenization) - 1])) {
+                    //    array_pop($this->tokenization);
+                    //}
+                    $this->ansi .= "\x1B";
+                    break;
+                default:
+                    $this->attrs[$this->y][$this->x] = clone $this->attr_cell;
+                    if ($this->x > strlen($this->screen[$this->y])) {
+                        $this->screen[$this->y] = str_repeat(' ', $this->x);
+                    }
+                    $this->screen[$this->y] = substr_replace(
+                        $this->screen[$this->y],
+                        $source[$i],
+                        $this->x,
+                        1
+                    );
+
+                    if ($this->x > $this->max_x) {
+                        $this->x = 0;
+                        $this->newLine();
+                    } else {
+                        $this->x++;
+                    }
+            }
+        }
+    }
+
+    /**
+     * Add a new line
+     *
+     * Also update the $this->screen and $this->history buffers
+     *
+     */
+    private function newLine()
+    {
+        //if ($this->y < $this->max_y) {
+        //    $this->y++;
+        //}
+
+        while ($this->y >= $this->max_y) {
+            $this->history = array_merge($this->history, [array_shift($this->screen)]);
+            $this->screen[] = '';
+
+            $this->history_attrs = array_merge($this->history_attrs, [array_shift($this->attrs)]);
+            $this->attrs[] = $this->attr_row;
+
+            if (count($this->history) >= $this->max_history) {
+                array_shift($this->history);
+                array_shift($this->history_attrs);
+            }
+
+            $this->y--;
+        }
+        $this->y++;
+    }
+
+    /**
+     * Returns the current coordinate without preformating
+     *
+     * @param \stdClass $last_attr
+     * @param \stdClass $cur_attr
+     * @param string $char
+     * @return string
+     */
+    private function processCoordinate(\stdClass $last_attr, \stdClass $cur_attr, $char)
+    {
+        $output = '';
+
+        if ($last_attr != $cur_attr) {
+            $close = $open = '';
+            if ($last_attr->foreground != $cur_attr->foreground) {
+                if ($cur_attr->foreground != 'white') {
+                    $open .= '<span style="color: ' . $cur_attr->foreground . '">';
+                }
+                if ($last_attr->foreground != 'white') {
+                    $close = '</span>' . $close;
+                }
+            }
+            if ($last_attr->background != $cur_attr->background) {
+                if ($cur_attr->background != 'black') {
+                    $open .= '<span style="background: ' . $cur_attr->background . '">';
+                }
+                if ($last_attr->background != 'black') {
+                    $close = '</span>' . $close;
+                }
+            }
+            if ($last_attr->bold != $cur_attr->bold) {
+                if ($cur_attr->bold) {
+                    $open .= '<b>';
+                } else {
+                    $close = '</b>' . $close;
+                }
+            }
+            if ($last_attr->underline != $cur_attr->underline) {
+                if ($cur_attr->underline) {
+                    $open .= '<u>';
+                } else {
+                    $close = '</u>' . $close;
+                }
+            }
+            if ($last_attr->blink != $cur_attr->blink) {
+                if ($cur_attr->blink) {
+                    $open .= '<blink>';
+                } else {
+                    $close = '</blink>' . $close;
+                }
+            }
+            $output .= $close . $open;
+        }
+
+        $output .= htmlspecialchars($char);
+
+        return $output;
+    }
+
+    /**
+     * Returns the current screen without preformating
+     *
+     * @return string
+     */
+    private function getScreenHelper()
+    {
+        $output = '';
+        $last_attr = $this->base_attr_cell;
+        for ($i = 0; $i <= $this->max_y; $i++) {
+            for ($j = 0; $j <= $this->max_x; $j++) {
+                $cur_attr = $this->attrs[$i][$j];
+                $output .= $this->processCoordinate($last_attr, $cur_attr, isset($this->screen[$i][$j]) ? $this->screen[$i][$j] : '');
+                $last_attr = $this->attrs[$i][$j];
+            }
+            $output .= "\r\n";
+        }
+        $output = substr($output, 0, -2);
+        // close any remaining open tags
+        $output .= $this->processCoordinate($last_attr, $this->base_attr_cell, '');
+        return rtrim($output);
+    }
+
+    /**
+     * Returns the current screen
+     *
+     * @return string
+     */
+    public function getScreen()
+    {
+        return '<pre width="' . ($this->max_x + 1) . '" style="color: white; background: black">' . $this->getScreenHelper() . '</pre>';
+    }
+
+    /**
+     * Returns the current screen and the x previous lines
+     *
+     * @return string
+     */
+    public function getHistory()
+    {
+        $scrollback = '';
+        $last_attr = $this->base_attr_cell;
+        for ($i = 0; $i < count($this->history); $i++) {
+            for ($j = 0; $j <= $this->max_x + 1; $j++) {
+                $cur_attr = $this->history_attrs[$i][$j];
+                $scrollback .= $this->processCoordinate($last_attr, $cur_attr, isset($this->history[$i][$j]) ? $this->history[$i][$j] : '');
+                $last_attr = $this->history_attrs[$i][$j];
+            }
+            $scrollback .= "\r\n";
+        }
+        $base_attr_cell = $this->base_attr_cell;
+        $this->base_attr_cell = $last_attr;
+        $scrollback .= $this->getScreen();
+        $this->base_attr_cell = $base_attr_cell;
+
+        return '<pre width="' . ($this->max_x + 1) . '" style="color: white; background: black">' . $scrollback . '</span></pre>';
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1.php
new file mode 100644
index 0000000..c4b06a5
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1.php
@@ -0,0 +1,1513 @@
+<?php
+
+/**
+ * Pure-PHP ASN.1 Parser
+ *
+ * PHP version 5
+ *
+ * ASN.1 provides the semantics for data encoded using various schemes.  The most commonly
+ * utilized scheme is DER or the "Distinguished Encoding Rules".  PEM's are base64 encoded
+ * DER blobs.
+ *
+ * \phpseclib3\File\ASN1 decodes and encodes DER formatted messages and places them in a semantic context.
+ *
+ * Uses the 1988 ASN.1 syntax.
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2012 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File;
+
+use phpseclib3\Common\Functions\Strings;
+use phpseclib3\File\ASN1\Element;
+use phpseclib3\Math\BigInteger;
+
+/**
+ * Pure-PHP ASN.1 Parser
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class ASN1
+{
+    // Tag Classes
+    // http://www.itu.int/ITU-T/studygroups/com17/languages/X.690-0207.pdf#page=12
+    const CLASS_UNIVERSAL        = 0;
+    const CLASS_APPLICATION      = 1;
+    const CLASS_CONTEXT_SPECIFIC = 2;
+    const CLASS_PRIVATE          = 3;
+
+    // Tag Classes
+    // http://www.obj-sys.com/asn1tutorial/node124.html
+    const TYPE_BOOLEAN           = 1;
+    const TYPE_INTEGER           = 2;
+    const TYPE_BIT_STRING        = 3;
+    const TYPE_OCTET_STRING      = 4;
+    const TYPE_NULL              = 5;
+    const TYPE_OBJECT_IDENTIFIER = 6;
+    //const TYPE_OBJECT_DESCRIPTOR = 7;
+    //const TYPE_INSTANCE_OF       = 8; // EXTERNAL
+    const TYPE_REAL              = 9;
+    const TYPE_ENUMERATED        = 10;
+    //const TYPE_EMBEDDED          = 11;
+    const TYPE_UTF8_STRING       = 12;
+    //const TYPE_RELATIVE_OID      = 13;
+    const TYPE_SEQUENCE          = 16; // SEQUENCE OF
+    const TYPE_SET               = 17; // SET OF
+
+    // More Tag Classes
+    // http://www.obj-sys.com/asn1tutorial/node10.html
+    const TYPE_NUMERIC_STRING   = 18;
+    const TYPE_PRINTABLE_STRING = 19;
+    const TYPE_TELETEX_STRING   = 20; // T61String
+    const TYPE_VIDEOTEX_STRING  = 21;
+    const TYPE_IA5_STRING       = 22;
+    const TYPE_UTC_TIME         = 23;
+    const TYPE_GENERALIZED_TIME = 24;
+    const TYPE_GRAPHIC_STRING   = 25;
+    const TYPE_VISIBLE_STRING   = 26; // ISO646String
+    const TYPE_GENERAL_STRING   = 27;
+    const TYPE_UNIVERSAL_STRING = 28;
+    //const TYPE_CHARACTER_STRING = 29;
+    const TYPE_BMP_STRING       = 30;
+
+    // Tag Aliases
+    // These tags are kinda place holders for other tags.
+    const TYPE_CHOICE = -1;
+    const TYPE_ANY    = -2;
+
+    /**
+     * ASN.1 object identifiers
+     *
+     * @var array
+     * @link http://en.wikipedia.org/wiki/Object_identifier
+     */
+    private static $oids = [];
+
+    /**
+     * ASN.1 object identifier reverse mapping
+     *
+     * @var array
+     */
+    private static $reverseOIDs = [];
+
+    /**
+     * Default date format
+     *
+     * @var string
+     * @link http://php.net/class.datetime
+     */
+    private static $format = 'D, d M Y H:i:s O';
+
+    /**
+     * Filters
+     *
+     * If the mapping type is self::TYPE_ANY what do we actually encode it as?
+     *
+     * @var array
+     * @see self::encode_der()
+     */
+    private static $filters;
+
+    /**
+     * Current Location of most recent ASN.1 encode process
+     *
+     * Useful for debug purposes
+     *
+     * @var array
+     * @see self::encode_der()
+     */
+    private static $location;
+
+    /**
+     * DER Encoded String
+     *
+     * In case we need to create ASN1\Element object's..
+     *
+     * @var string
+     * @see self::decodeDER()
+     */
+    private static $encoded;
+
+    /**
+     * Type mapping table for the ANY type.
+     *
+     * Structured or unknown types are mapped to a \phpseclib3\File\ASN1\Element.
+     * Unambiguous types get the direct mapping (int/real/bool).
+     * Others are mapped as a choice, with an extra indexing level.
+     *
+     * @var array
+     */
+    const ANY_MAP = [
+        self::TYPE_BOOLEAN              => true,
+        self::TYPE_INTEGER              => true,
+        self::TYPE_BIT_STRING           => 'bitString',
+        self::TYPE_OCTET_STRING         => 'octetString',
+        self::TYPE_NULL                 => 'null',
+        self::TYPE_OBJECT_IDENTIFIER    => 'objectIdentifier',
+        self::TYPE_REAL                 => true,
+        self::TYPE_ENUMERATED           => 'enumerated',
+        self::TYPE_UTF8_STRING          => 'utf8String',
+        self::TYPE_NUMERIC_STRING       => 'numericString',
+        self::TYPE_PRINTABLE_STRING     => 'printableString',
+        self::TYPE_TELETEX_STRING       => 'teletexString',
+        self::TYPE_VIDEOTEX_STRING      => 'videotexString',
+        self::TYPE_IA5_STRING           => 'ia5String',
+        self::TYPE_UTC_TIME             => 'utcTime',
+        self::TYPE_GENERALIZED_TIME     => 'generalTime',
+        self::TYPE_GRAPHIC_STRING       => 'graphicString',
+        self::TYPE_VISIBLE_STRING       => 'visibleString',
+        self::TYPE_GENERAL_STRING       => 'generalString',
+        self::TYPE_UNIVERSAL_STRING     => 'universalString',
+        //self::TYPE_CHARACTER_STRING     => 'characterString',
+        self::TYPE_BMP_STRING           => 'bmpString'
+    ];
+
+    /**
+     * String type to character size mapping table.
+     *
+     * Non-convertable types are absent from this table.
+     * size == 0 indicates variable length encoding.
+     *
+     * @var array
+     */
+    const STRING_TYPE_SIZE = [
+        self::TYPE_UTF8_STRING      => 0,
+        self::TYPE_BMP_STRING       => 2,
+        self::TYPE_UNIVERSAL_STRING => 4,
+        self::TYPE_PRINTABLE_STRING => 1,
+        self::TYPE_TELETEX_STRING   => 1,
+        self::TYPE_IA5_STRING       => 1,
+        self::TYPE_VISIBLE_STRING   => 1,
+    ];
+
+    /**
+     * Parse BER-encoding
+     *
+     * Serves a similar purpose to openssl's asn1parse
+     *
+     * @param Element|string $encoded
+     * @return ?array
+     */
+    public static function decodeBER($encoded)
+    {
+        if ($encoded instanceof Element) {
+            $encoded = $encoded->element;
+        }
+
+        self::$encoded = $encoded;
+
+        $decoded = self::decode_ber($encoded);
+        if ($decoded === false) {
+            return null;
+        }
+
+        return [$decoded];
+    }
+
+    /**
+     * Parse BER-encoding (Helper function)
+     *
+     * Sometimes we want to get the BER encoding of a particular tag.  $start lets us do that without having to reencode.
+     * $encoded is passed by reference for the recursive calls done for self::TYPE_BIT_STRING and
+     * self::TYPE_OCTET_STRING. In those cases, the indefinite length is used.
+     *
+     * @param string $encoded
+     * @param int $start
+     * @param int $encoded_pos
+     * @return array|bool
+     */
+    private static function decode_ber($encoded, $start = 0, $encoded_pos = 0)
+    {
+        $current = ['start' => $start];
+
+        if (!isset($encoded[$encoded_pos])) {
+            return false;
+        }
+        $type = ord($encoded[$encoded_pos++]);
+        $startOffset = 1;
+
+        $constructed = ($type >> 5) & 1;
+
+        $tag = $type & 0x1F;
+        if ($tag == 0x1F) {
+            $tag = 0;
+            // process septets (since the eighth bit is ignored, it's not an octet)
+            do {
+                if (!isset($encoded[$encoded_pos])) {
+                    return false;
+                }
+                $temp = ord($encoded[$encoded_pos++]);
+                $startOffset++;
+                $loop = $temp >> 7;
+                $tag <<= 7;
+                $temp &= 0x7F;
+                // "bits 7 to 1 of the first subsequent octet shall not all be zero"
+                if ($startOffset == 2 && $temp == 0) {
+                    return false;
+                }
+                $tag |= $temp;
+            } while ($loop);
+        }
+
+        $start += $startOffset;
+
+        // Length, as discussed in paragraph 8.1.3 of X.690-0207.pdf#page=13
+        if (!isset($encoded[$encoded_pos])) {
+            return false;
+        }
+        $length = ord($encoded[$encoded_pos++]);
+        $start++;
+        if ($length == 0x80) { // indefinite length
+            // "[A sender shall] use the indefinite form (see 8.1.3.6) if the encoding is constructed and is not all
+            //  immediately available." -- paragraph 8.1.3.2.c
+            $length = strlen($encoded) - $encoded_pos;
+        } elseif ($length & 0x80) { // definite length, long form
+            // technically, the long form of the length can be represented by up to 126 octets (bytes), but we'll only
+            // support it up to four.
+            $length &= 0x7F;
+            $temp = substr($encoded, $encoded_pos, $length);
+            $encoded_pos += $length;
+            // tags of indefinte length don't really have a header length; this length includes the tag
+            $current += ['headerlength' => $length + 2];
+            $start += $length;
+            extract(unpack('Nlength', substr(str_pad($temp, 4, chr(0), STR_PAD_LEFT), -4)));
+            /** @var integer $length */
+        } else {
+            $current += ['headerlength' => 2];
+        }
+
+        if ($length > (strlen($encoded) - $encoded_pos)) {
+            return false;
+        }
+
+        $content = substr($encoded, $encoded_pos, $length);
+        $content_pos = 0;
+
+        // at this point $length can be overwritten. it's only accurate for definite length things as is
+
+        /* Class is UNIVERSAL, APPLICATION, PRIVATE, or CONTEXT-SPECIFIC. The UNIVERSAL class is restricted to the ASN.1
+           built-in types. It defines an application-independent data type that must be distinguishable from all other
+           data types. The other three classes are user defined. The APPLICATION class distinguishes data types that
+           have a wide, scattered use within a particular presentation context. PRIVATE distinguishes data types within
+           a particular organization or country. CONTEXT-SPECIFIC distinguishes members of a sequence or set, the
+           alternatives of a CHOICE, or universally tagged set members. Only the class number appears in braces for this
+           data type; the term CONTEXT-SPECIFIC does not appear.
+
+             -- http://www.obj-sys.com/asn1tutorial/node12.html */
+        $class = ($type >> 6) & 3;
+        switch ($class) {
+            case self::CLASS_APPLICATION:
+            case self::CLASS_PRIVATE:
+            case self::CLASS_CONTEXT_SPECIFIC:
+                if (!$constructed) {
+                    return [
+                        'type'     => $class,
+                        'constant' => $tag,
+                        'content'  => $content,
+                        'length'   => $length + $start - $current['start']
+                    ] + $current;
+                }
+
+                $newcontent = [];
+                $remainingLength = $length;
+                while ($remainingLength > 0) {
+                    $temp = self::decode_ber($content, $start, $content_pos);
+                    if ($temp === false) {
+                        break;
+                    }
+                    $length = $temp['length'];
+                    // end-of-content octets - see paragraph 8.1.5
+                    if (substr($content, $content_pos + $length, 2) == "\0\0") {
+                        $length += 2;
+                        $start += $length;
+                        $newcontent[] = $temp;
+                        break;
+                    }
+                    $start += $length;
+                    $remainingLength -= $length;
+                    $newcontent[] = $temp;
+                    $content_pos += $length;
+                }
+
+                return [
+                    'type'     => $class,
+                    'constant' => $tag,
+                    // the array encapsulation is for BC with the old format
+                    'content'  => $newcontent,
+                    // the only time when $content['headerlength'] isn't defined is when the length is indefinite.
+                    // the absence of $content['headerlength'] is how we know if something is indefinite or not.
+                    // technically, it could be defined to be 2 and then another indicator could be used but whatever.
+                    'length'   => $start - $current['start']
+                ] + $current;
+        }
+
+        $current += ['type' => $tag];
+
+        // decode UNIVERSAL tags
+        switch ($tag) {
+            case self::TYPE_BOOLEAN:
+                // "The contents octets shall consist of a single octet." -- paragraph 8.2.1
+                if ($constructed || strlen($content) != 1) {
+                    return false;
+                }
+                $current['content'] = (bool) ord($content[$content_pos]);
+                break;
+            case self::TYPE_INTEGER:
+            case self::TYPE_ENUMERATED:
+                if ($constructed) {
+                    return false;
+                }
+                $current['content'] = new BigInteger(substr($content, $content_pos), -256);
+                break;
+            case self::TYPE_REAL: // not currently supported
+                return false;
+            case self::TYPE_BIT_STRING:
+                // The initial octet shall encode, as an unsigned binary integer with bit 1 as the least significant bit,
+                // the number of unused bits in the final subsequent octet. The number shall be in the range zero to
+                // seven.
+                if (!$constructed) {
+                    $current['content'] = substr($content, $content_pos);
+                } else {
+                    $temp = self::decode_ber($content, $start, $content_pos);
+                    if ($temp === false) {
+                        return false;
+                    }
+                    $length -= (strlen($content) - $content_pos);
+                    $last = count($temp) - 1;
+                    for ($i = 0; $i < $last; $i++) {
+                        // all subtags should be bit strings
+                        if ($temp[$i]['type'] != self::TYPE_BIT_STRING) {
+                            return false;
+                        }
+                        $current['content'] .= substr($temp[$i]['content'], 1);
+                    }
+                    // all subtags should be bit strings
+                    if ($temp[$last]['type'] != self::TYPE_BIT_STRING) {
+                        return false;
+                    }
+                    $current['content'] = $temp[$last]['content'][0] . $current['content'] . substr($temp[$i]['content'], 1);
+                }
+                break;
+            case self::TYPE_OCTET_STRING:
+                if (!$constructed) {
+                    $current['content'] = substr($content, $content_pos);
+                } else {
+                    $current['content'] = '';
+                    $length = 0;
+                    while (substr($content, $content_pos, 2) != "\0\0") {
+                        $temp = self::decode_ber($content, $length + $start, $content_pos);
+                        if ($temp === false) {
+                            return false;
+                        }
+                        $content_pos += $temp['length'];
+                        // all subtags should be octet strings
+                        if ($temp['type'] != self::TYPE_OCTET_STRING) {
+                            return false;
+                        }
+                        $current['content'] .= $temp['content'];
+                        $length += $temp['length'];
+                    }
+                    if (substr($content, $content_pos, 2) == "\0\0") {
+                        $length += 2; // +2 for the EOC
+                    }
+                }
+                break;
+            case self::TYPE_NULL:
+                // "The contents octets shall not contain any octets." -- paragraph 8.8.2
+                if ($constructed || strlen($content)) {
+                    return false;
+                }
+                break;
+            case self::TYPE_SEQUENCE:
+            case self::TYPE_SET:
+                if (!$constructed) {
+                    return false;
+                }
+                $offset = 0;
+                $current['content'] = [];
+                $content_len = strlen($content);
+                while ($content_pos < $content_len) {
+                    // if indefinite length construction was used and we have an end-of-content string next
+                    // see paragraphs 8.1.1.3, 8.1.3.2, 8.1.3.6, 8.1.5, and (for an example) 8.6.4.2
+                    if (!isset($current['headerlength']) && substr($content, $content_pos, 2) == "\0\0") {
+                        $length = $offset + 2; // +2 for the EOC
+                        break 2;
+                    }
+                    $temp = self::decode_ber($content, $start + $offset, $content_pos);
+                    if ($temp === false) {
+                        return false;
+                    }
+                    $content_pos += $temp['length'];
+                    $current['content'][] = $temp;
+                    $offset += $temp['length'];
+                }
+                break;
+            case self::TYPE_OBJECT_IDENTIFIER:
+                if ($constructed) {
+                    return false;
+                }
+                $current['content'] = self::decodeOID(substr($content, $content_pos));
+                if ($current['content'] === false) {
+                    return false;
+                }
+                break;
+            /* Each character string type shall be encoded as if it had been declared:
+               [UNIVERSAL x] IMPLICIT OCTET STRING
+
+                 -- X.690-0207.pdf#page=23 (paragraph 8.21.3)
+
+               Per that, we're not going to do any validation.  If there are any illegal characters in the string,
+               we don't really care */
+            case self::TYPE_NUMERIC_STRING:
+                // 0,1,2,3,4,5,6,7,8,9, and space
+            case self::TYPE_PRINTABLE_STRING:
+                // Upper and lower case letters, digits, space, apostrophe, left/right parenthesis, plus sign, comma,
+                // hyphen, full stop, solidus, colon, equal sign, question mark
+            case self::TYPE_TELETEX_STRING:
+                // The Teletex character set in CCITT's T61, space, and delete
+                // see http://en.wikipedia.org/wiki/Teletex#Character_sets
+            case self::TYPE_VIDEOTEX_STRING:
+                // The Videotex character set in CCITT's T.100 and T.101, space, and delete
+            case self::TYPE_VISIBLE_STRING:
+                // Printing character sets of international ASCII, and space
+            case self::TYPE_IA5_STRING:
+                // International Alphabet 5 (International ASCII)
+            case self::TYPE_GRAPHIC_STRING:
+                // All registered G sets, and space
+            case self::TYPE_GENERAL_STRING:
+                // All registered C and G sets, space and delete
+            case self::TYPE_UTF8_STRING:
+                // ????
+            case self::TYPE_BMP_STRING:
+                if ($constructed) {
+                    return false;
+                }
+                $current['content'] = substr($content, $content_pos);
+                break;
+            case self::TYPE_UTC_TIME:
+            case self::TYPE_GENERALIZED_TIME:
+                if ($constructed) {
+                    return false;
+                }
+                $current['content'] = self::decodeTime(substr($content, $content_pos), $tag);
+                break;
+            default:
+                return false;
+        }
+
+        $start += $length;
+
+        // ie. length is the length of the full TLV encoding - it's not just the length of the value
+        return $current + ['length' => $start - $current['start']];
+    }
+
+    /**
+     * ASN.1 Map
+     *
+     * Provides an ASN.1 semantic mapping ($mapping) from a parsed BER-encoding to a human readable format.
+     *
+     * "Special" mappings may be applied on a per tag-name basis via $special.
+     *
+     * @param array $decoded
+     * @param array $mapping
+     * @param array $special
+     * @return array|bool|Element|string|null
+     */
+    public static function asn1map(array $decoded, $mapping, $special = [])
+    {
+        if (isset($mapping['explicit']) && is_array($decoded['content'])) {
+            $decoded = $decoded['content'][0];
+        }
+
+        switch (true) {
+            case $mapping['type'] == self::TYPE_ANY:
+                $intype = $decoded['type'];
+                // !isset(self::ANY_MAP[$intype]) produces a fatal error on PHP 5.6
+                if (isset($decoded['constant']) || !array_key_exists($intype, self::ANY_MAP) || (ord(self::$encoded[$decoded['start']]) & 0x20)) {
+                    return new Element(substr(self::$encoded, $decoded['start'], $decoded['length']));
+                }
+                $inmap = self::ANY_MAP[$intype];
+                if (is_string($inmap)) {
+                    return [$inmap => self::asn1map($decoded, ['type' => $intype] + $mapping, $special)];
+                }
+                break;
+            case $mapping['type'] == self::TYPE_CHOICE:
+                foreach ($mapping['children'] as $key => $option) {
+                    switch (true) {
+                        case isset($option['constant']) && $option['constant'] == $decoded['constant']:
+                        case !isset($option['constant']) && $option['type'] == $decoded['type']:
+                            $value = self::asn1map($decoded, $option, $special);
+                            break;
+                        case !isset($option['constant']) && $option['type'] == self::TYPE_CHOICE:
+                            $v = self::asn1map($decoded, $option, $special);
+                            if (isset($v)) {
+                                $value = $v;
+                            }
+                    }
+                    if (isset($value)) {
+                        if (isset($special[$key])) {
+                            $value = $special[$key]($value);
+                        }
+                        return [$key => $value];
+                    }
+                }
+                return null;
+            case isset($mapping['implicit']):
+            case isset($mapping['explicit']):
+            case $decoded['type'] == $mapping['type']:
+                break;
+            default:
+                // if $decoded['type'] and $mapping['type'] are both strings, but different types of strings,
+                // let it through
+                switch (true) {
+                    case $decoded['type'] < 18: // self::TYPE_NUMERIC_STRING == 18
+                    case $decoded['type'] > 30: // self::TYPE_BMP_STRING == 30
+                    case $mapping['type'] < 18:
+                    case $mapping['type'] > 30:
+                        return null;
+                }
+        }
+
+        if (isset($mapping['implicit'])) {
+            $decoded['type'] = $mapping['type'];
+        }
+
+        switch ($decoded['type']) {
+            case self::TYPE_SEQUENCE:
+                $map = [];
+
+                // ignore the min and max
+                if (isset($mapping['min']) && isset($mapping['max'])) {
+                    $child = $mapping['children'];
+                    foreach ($decoded['content'] as $content) {
+                        if (($map[] = self::asn1map($content, $child, $special)) === null) {
+                            return null;
+                        }
+                    }
+
+                    return $map;
+                }
+
+                $n = count($decoded['content']);
+                $i = 0;
+
+                foreach ($mapping['children'] as $key => $child) {
+                    $maymatch = $i < $n; // Match only existing input.
+                    if ($maymatch) {
+                        $temp = $decoded['content'][$i];
+
+                        if ($child['type'] != self::TYPE_CHOICE) {
+                            // Get the mapping and input class & constant.
+                            $childClass = $tempClass = self::CLASS_UNIVERSAL;
+                            $constant = null;
+                            if (isset($temp['constant'])) {
+                                $tempClass = $temp['type'];
+                            }
+                            if (isset($child['class'])) {
+                                $childClass = $child['class'];
+                                $constant = $child['cast'];
+                            } elseif (isset($child['constant'])) {
+                                $childClass = self::CLASS_CONTEXT_SPECIFIC;
+                                $constant = $child['constant'];
+                            }
+
+                            if (isset($constant) && isset($temp['constant'])) {
+                                // Can only match if constants and class match.
+                                $maymatch = $constant == $temp['constant'] && $childClass == $tempClass;
+                            } else {
+                                // Can only match if no constant expected and type matches or is generic.
+                                $maymatch = !isset($child['constant']) && array_search($child['type'], [$temp['type'], self::TYPE_ANY, self::TYPE_CHOICE]) !== false;
+                            }
+                        }
+                    }
+
+                    if ($maymatch) {
+                        // Attempt submapping.
+                        $candidate = self::asn1map($temp, $child, $special);
+                        $maymatch = $candidate !== null;
+                    }
+
+                    if ($maymatch) {
+                        // Got the match: use it.
+                        if (isset($special[$key])) {
+                            $candidate = $special[$key]($candidate);
+                        }
+                        $map[$key] = $candidate;
+                        $i++;
+                    } elseif (isset($child['default'])) {
+                        $map[$key] = $child['default'];
+                    } elseif (!isset($child['optional'])) {
+                        return null; // Syntax error.
+                    }
+                }
+
+                // Fail mapping if all input items have not been consumed.
+                return $i < $n ? null : $map;
+
+            // the main diff between sets and sequences is the encapsulation of the foreach in another for loop
+            case self::TYPE_SET:
+                $map = [];
+
+                // ignore the min and max
+                if (isset($mapping['min']) && isset($mapping['max'])) {
+                    $child = $mapping['children'];
+                    foreach ($decoded['content'] as $content) {
+                        if (($map[] = self::asn1map($content, $child, $special)) === null) {
+                            return null;
+                        }
+                    }
+
+                    return $map;
+                }
+
+                for ($i = 0; $i < count($decoded['content']); $i++) {
+                    $temp = $decoded['content'][$i];
+                    $tempClass = self::CLASS_UNIVERSAL;
+                    if (isset($temp['constant'])) {
+                        $tempClass = $temp['type'];
+                    }
+
+                    foreach ($mapping['children'] as $key => $child) {
+                        if (isset($map[$key])) {
+                            continue;
+                        }
+                        $maymatch = true;
+                        if ($child['type'] != self::TYPE_CHOICE) {
+                            $childClass = self::CLASS_UNIVERSAL;
+                            $constant = null;
+                            if (isset($child['class'])) {
+                                $childClass = $child['class'];
+                                $constant = $child['cast'];
+                            } elseif (isset($child['constant'])) {
+                                $childClass = self::CLASS_CONTEXT_SPECIFIC;
+                                $constant = $child['constant'];
+                            }
+
+                            if (isset($constant) && isset($temp['constant'])) {
+                                // Can only match if constants and class match.
+                                $maymatch = $constant == $temp['constant'] && $childClass == $tempClass;
+                            } else {
+                                // Can only match if no constant expected and type matches or is generic.
+                                $maymatch = !isset($child['constant']) && array_search($child['type'], [$temp['type'], self::TYPE_ANY, self::TYPE_CHOICE]) !== false;
+                            }
+                        }
+
+                        if ($maymatch) {
+                            // Attempt submapping.
+                            $candidate = self::asn1map($temp, $child, $special);
+                            $maymatch = $candidate !== null;
+                        }
+
+                        if (!$maymatch) {
+                            break;
+                        }
+
+                        // Got the match: use it.
+                        if (isset($special[$key])) {
+                            $candidate = $special[$key]($candidate);
+                        }
+                        $map[$key] = $candidate;
+                        break;
+                    }
+                }
+
+                foreach ($mapping['children'] as $key => $child) {
+                    if (!isset($map[$key])) {
+                        if (isset($child['default'])) {
+                            $map[$key] = $child['default'];
+                        } elseif (!isset($child['optional'])) {
+                            return null;
+                        }
+                    }
+                }
+                return $map;
+            case self::TYPE_OBJECT_IDENTIFIER:
+                return isset(self::$oids[$decoded['content']]) ? self::$oids[$decoded['content']] : $decoded['content'];
+            case self::TYPE_UTC_TIME:
+            case self::TYPE_GENERALIZED_TIME:
+                // for explicitly tagged optional stuff
+                if (is_array($decoded['content'])) {
+                    $decoded['content'] = $decoded['content'][0]['content'];
+                }
+                // for implicitly tagged optional stuff
+                // in theory, doing isset($mapping['implicit']) would work but malformed certs do exist
+                // in the wild that OpenSSL decodes without issue so we'll support them as well
+                if (!is_object($decoded['content'])) {
+                    $decoded['content'] = self::decodeTime($decoded['content'], $decoded['type']);
+                }
+                return $decoded['content'] ? $decoded['content']->format(self::$format) : false;
+            case self::TYPE_BIT_STRING:
+                if (isset($mapping['mapping'])) {
+                    $offset = ord($decoded['content'][0]);
+                    $size = (strlen($decoded['content']) - 1) * 8 - $offset;
+                    /*
+                       From X.680-0207.pdf#page=46 (21.7):
+
+                       "When a "NamedBitList" is used in defining a bitstring type ASN.1 encoding rules are free to add (or remove)
+                        arbitrarily any trailing 0 bits to (or from) values that are being encoded or decoded. Application designers should
+                        therefore ensure that different semantics are not associated with such values which differ only in the number of trailing
+                        0 bits."
+                    */
+                    $bits = count($mapping['mapping']) == $size ? [] : array_fill(0, count($mapping['mapping']) - $size, false);
+                    for ($i = strlen($decoded['content']) - 1; $i > 0; $i--) {
+                        $current = ord($decoded['content'][$i]);
+                        for ($j = $offset; $j < 8; $j++) {
+                            $bits[] = (bool) ($current & (1 << $j));
+                        }
+                        $offset = 0;
+                    }
+                    $values = [];
+                    $map = array_reverse($mapping['mapping']);
+                    foreach ($map as $i => $value) {
+                        if ($bits[$i]) {
+                            $values[] = $value;
+                        }
+                    }
+                    return $values;
+                }
+                // fall-through
+            case self::TYPE_OCTET_STRING:
+                return $decoded['content'];
+            case self::TYPE_NULL:
+                return '';
+            case self::TYPE_BOOLEAN:
+            case self::TYPE_NUMERIC_STRING:
+            case self::TYPE_PRINTABLE_STRING:
+            case self::TYPE_TELETEX_STRING:
+            case self::TYPE_VIDEOTEX_STRING:
+            case self::TYPE_IA5_STRING:
+            case self::TYPE_GRAPHIC_STRING:
+            case self::TYPE_VISIBLE_STRING:
+            case self::TYPE_GENERAL_STRING:
+            case self::TYPE_UNIVERSAL_STRING:
+            case self::TYPE_UTF8_STRING:
+            case self::TYPE_BMP_STRING:
+                return $decoded['content'];
+            case self::TYPE_INTEGER:
+            case self::TYPE_ENUMERATED:
+                $temp = $decoded['content'];
+                if (isset($mapping['implicit'])) {
+                    $temp = new BigInteger($decoded['content'], -256);
+                }
+                if (isset($mapping['mapping'])) {
+                    $temp = (int) $temp->toString();
+                    return isset($mapping['mapping'][$temp]) ?
+                        $mapping['mapping'][$temp] :
+                        false;
+                }
+                return $temp;
+        }
+    }
+
+    /**
+     * DER-decode the length
+     *
+     * DER supports lengths up to (2**8)**127, however, we'll only support lengths up to (2**8)**4.  See
+     * {@link http://itu.int/ITU-T/studygroups/com17/languages/X.690-0207.pdf#p=13 X.690 paragraph 8.1.3} for more information.
+     *
+     * @param string $string
+     * @return int
+     */
+    public static function decodeLength(&$string)
+    {
+        $length = ord(Strings::shift($string));
+        if ($length & 0x80) { // definite length, long form
+            $length &= 0x7F;
+            $temp = Strings::shift($string, $length);
+            list(, $length) = unpack('N', substr(str_pad($temp, 4, chr(0), STR_PAD_LEFT), -4));
+        }
+        return $length;
+    }
+
+    /**
+     * ASN.1 Encode
+     *
+     * DER-encodes an ASN.1 semantic mapping ($mapping).  Some libraries would probably call this function
+     * an ASN.1 compiler.
+     *
+     * "Special" mappings can be applied via $special.
+     *
+     * @param Element|string|array $source
+     * @param array $mapping
+     * @param array $special
+     * @return string
+     */
+    public static function encodeDER($source, $mapping, $special = [])
+    {
+        self::$location = [];
+        return self::encode_der($source, $mapping, null, $special);
+    }
+
+    /**
+     * ASN.1 Encode (Helper function)
+     *
+     * @param Element|string|array|null $source
+     * @param array $mapping
+     * @param int $idx
+     * @param array $special
+     * @return string
+     */
+    private static function encode_der($source, array $mapping, $idx = null, array $special = [])
+    {
+        if ($source instanceof Element) {
+            return $source->element;
+        }
+
+        // do not encode (implicitly optional) fields with value set to default
+        if (isset($mapping['default']) && $source === $mapping['default']) {
+            return '';
+        }
+
+        if (isset($idx)) {
+            if (isset($special[$idx])) {
+                $source = $special[$idx]($source);
+            }
+            self::$location[] = $idx;
+        }
+
+        $tag = $mapping['type'];
+
+        switch ($tag) {
+            case self::TYPE_SET:    // Children order is not important, thus process in sequence.
+            case self::TYPE_SEQUENCE:
+                $tag |= 0x20; // set the constructed bit
+
+                // ignore the min and max
+                if (isset($mapping['min']) && isset($mapping['max'])) {
+                    $value = [];
+                    $child = $mapping['children'];
+
+                    foreach ($source as $content) {
+                        $temp = self::encode_der($content, $child, null, $special);
+                        if ($temp === false) {
+                            return false;
+                        }
+                        $value[] = $temp;
+                    }
+                    /* "The encodings of the component values of a set-of value shall appear in ascending order, the encodings being compared
+                        as octet strings with the shorter components being padded at their trailing end with 0-octets.
+                        NOTE - The padding octets are for comparison purposes only and do not appear in the encodings."
+
+                       -- sec 11.6 of http://www.itu.int/ITU-T/studygroups/com17/languages/X.690-0207.pdf  */
+                    if ($mapping['type'] == self::TYPE_SET) {
+                        sort($value);
+                    }
+                    $value = implode('', $value);
+                    break;
+                }
+
+                $value = '';
+                foreach ($mapping['children'] as $key => $child) {
+                    if (!array_key_exists($key, $source)) {
+                        if (!isset($child['optional'])) {
+                            return false;
+                        }
+                        continue;
+                    }
+
+                    $temp = self::encode_der($source[$key], $child, $key, $special);
+                    if ($temp === false) {
+                        return false;
+                    }
+
+                    // An empty child encoding means it has been optimized out.
+                    // Else we should have at least one tag byte.
+                    if ($temp === '') {
+                        continue;
+                    }
+
+                    // if isset($child['constant']) is true then isset($child['optional']) should be true as well
+                    if (isset($child['constant'])) {
+                        /*
+                           From X.680-0207.pdf#page=58 (30.6):
+
+                           "The tagging construction specifies explicit tagging if any of the following holds:
+                            ...
+                            c) the "Tag Type" alternative is used and the value of "TagDefault" for the module is IMPLICIT TAGS or
+                            AUTOMATIC TAGS, but the type defined by "Type" is an untagged choice type, an untagged open type, or
+                            an untagged "DummyReference" (see ITU-T Rec. X.683 | ISO/IEC 8824-4, 8.3)."
+                         */
+                        if (isset($child['explicit']) || $child['type'] == self::TYPE_CHOICE) {
+                            $subtag = chr((self::CLASS_CONTEXT_SPECIFIC << 6) | 0x20 | $child['constant']);
+                            $temp = $subtag . self::encodeLength(strlen($temp)) . $temp;
+                        } else {
+                            $subtag = chr((self::CLASS_CONTEXT_SPECIFIC << 6) | (ord($temp[0]) & 0x20) | $child['constant']);
+                            $temp = $subtag . substr($temp, 1);
+                        }
+                    }
+                    $value .= $temp;
+                }
+                break;
+            case self::TYPE_CHOICE:
+                $temp = false;
+
+                foreach ($mapping['children'] as $key => $child) {
+                    if (!isset($source[$key])) {
+                        continue;
+                    }
+
+                    $temp = self::encode_der($source[$key], $child, $key, $special);
+                    if ($temp === false) {
+                        return false;
+                    }
+
+                    // An empty child encoding means it has been optimized out.
+                    // Else we should have at least one tag byte.
+                    if ($temp === '') {
+                        continue;
+                    }
+
+                    $tag = ord($temp[0]);
+
+                    // if isset($child['constant']) is true then isset($child['optional']) should be true as well
+                    if (isset($child['constant'])) {
+                        if (isset($child['explicit']) || $child['type'] == self::TYPE_CHOICE) {
+                            $subtag = chr((self::CLASS_CONTEXT_SPECIFIC << 6) | 0x20 | $child['constant']);
+                            $temp = $subtag . self::encodeLength(strlen($temp)) . $temp;
+                        } else {
+                            $subtag = chr((self::CLASS_CONTEXT_SPECIFIC << 6) | (ord($temp[0]) & 0x20) | $child['constant']);
+                            $temp = $subtag . substr($temp, 1);
+                        }
+                    }
+                }
+
+                if (isset($idx)) {
+                    array_pop(self::$location);
+                }
+
+                if ($temp && isset($mapping['cast'])) {
+                    $temp[0] = chr(($mapping['class'] << 6) | ($tag & 0x20) | $mapping['cast']);
+                }
+
+                return $temp;
+            case self::TYPE_INTEGER:
+            case self::TYPE_ENUMERATED:
+                if (!isset($mapping['mapping'])) {
+                    if (is_numeric($source)) {
+                        $source = new BigInteger($source);
+                    }
+                    $value = $source->toBytes(true);
+                } else {
+                    $value = array_search($source, $mapping['mapping']);
+                    if ($value === false) {
+                        return false;
+                    }
+                    $value = new BigInteger($value);
+                    $value = $value->toBytes(true);
+                }
+                if (!strlen($value)) {
+                    $value = chr(0);
+                }
+                break;
+            case self::TYPE_UTC_TIME:
+            case self::TYPE_GENERALIZED_TIME:
+                $format = $mapping['type'] == self::TYPE_UTC_TIME ? 'y' : 'Y';
+                $format .= 'mdHis';
+                // if $source does _not_ include timezone information within it then assume that the timezone is GMT
+                $date = new \DateTime($source, new \DateTimeZone('GMT'));
+                // if $source _does_ include timezone information within it then convert the time to GMT
+                $date->setTimezone(new \DateTimeZone('GMT'));
+                $value = $date->format($format) . 'Z';
+                break;
+            case self::TYPE_BIT_STRING:
+                if (isset($mapping['mapping'])) {
+                    $bits = array_fill(0, count($mapping['mapping']), 0);
+                    $size = 0;
+                    for ($i = 0; $i < count($mapping['mapping']); $i++) {
+                        if (in_array($mapping['mapping'][$i], $source)) {
+                            $bits[$i] = 1;
+                            $size = $i;
+                        }
+                    }
+
+                    if (isset($mapping['min']) && $mapping['min'] >= 1 && $size < $mapping['min']) {
+                        $size = $mapping['min'] - 1;
+                    }
+
+                    $offset = 8 - (($size + 1) & 7);
+                    $offset = $offset !== 8 ? $offset : 0;
+
+                    $value = chr($offset);
+
+                    for ($i = $size + 1; $i < count($mapping['mapping']); $i++) {
+                        unset($bits[$i]);
+                    }
+
+                    $bits = implode('', array_pad($bits, $size + $offset + 1, 0));
+                    $bytes = explode(' ', rtrim(chunk_split($bits, 8, ' ')));
+                    foreach ($bytes as $byte) {
+                        $value .= chr(bindec($byte));
+                    }
+
+                    break;
+                }
+                // fall-through
+            case self::TYPE_OCTET_STRING:
+                /* The initial octet shall encode, as an unsigned binary integer with bit 1 as the least significant bit,
+                   the number of unused bits in the final subsequent octet. The number shall be in the range zero to seven.
+
+                   -- http://www.itu.int/ITU-T/studygroups/com17/languages/X.690-0207.pdf#page=16 */
+                $value = $source;
+                break;
+            case self::TYPE_OBJECT_IDENTIFIER:
+                $value = self::encodeOID($source);
+                break;
+            case self::TYPE_ANY:
+                $loc = self::$location;
+                if (isset($idx)) {
+                    array_pop(self::$location);
+                }
+
+                switch (true) {
+                    case !isset($source):
+                        return self::encode_der(null, ['type' => self::TYPE_NULL] + $mapping, null, $special);
+                    case is_int($source):
+                    case $source instanceof BigInteger:
+                        return self::encode_der($source, ['type' => self::TYPE_INTEGER] + $mapping, null, $special);
+                    case is_float($source):
+                        return self::encode_der($source, ['type' => self::TYPE_REAL] + $mapping, null, $special);
+                    case is_bool($source):
+                        return self::encode_der($source, ['type' => self::TYPE_BOOLEAN] + $mapping, null, $special);
+                    case is_array($source) && count($source) == 1:
+                        $typename = implode('', array_keys($source));
+                        $outtype = array_search($typename, self::ANY_MAP, true);
+                        if ($outtype !== false) {
+                            return self::encode_der($source[$typename], ['type' => $outtype] + $mapping, null, $special);
+                        }
+                }
+
+                $filters = self::$filters;
+                foreach ($loc as $part) {
+                    if (!isset($filters[$part])) {
+                        $filters = false;
+                        break;
+                    }
+                    $filters = $filters[$part];
+                }
+                if ($filters === false) {
+                    throw new \RuntimeException('No filters defined for ' . implode('/', $loc));
+                }
+                return self::encode_der($source, $filters + $mapping, null, $special);
+            case self::TYPE_NULL:
+                $value = '';
+                break;
+            case self::TYPE_NUMERIC_STRING:
+            case self::TYPE_TELETEX_STRING:
+            case self::TYPE_PRINTABLE_STRING:
+            case self::TYPE_UNIVERSAL_STRING:
+            case self::TYPE_UTF8_STRING:
+            case self::TYPE_BMP_STRING:
+            case self::TYPE_IA5_STRING:
+            case self::TYPE_VISIBLE_STRING:
+            case self::TYPE_VIDEOTEX_STRING:
+            case self::TYPE_GRAPHIC_STRING:
+            case self::TYPE_GENERAL_STRING:
+                $value = $source;
+                break;
+            case self::TYPE_BOOLEAN:
+                $value = $source ? "\xFF" : "\x00";
+                break;
+            default:
+                throw new \RuntimeException('Mapping provides no type definition for ' . implode('/', self::$location));
+        }
+
+        if (isset($idx)) {
+            array_pop(self::$location);
+        }
+
+        if (isset($mapping['cast'])) {
+            if (isset($mapping['explicit']) || $mapping['type'] == self::TYPE_CHOICE) {
+                $value = chr($tag) . self::encodeLength(strlen($value)) . $value;
+                $tag = ($mapping['class'] << 6) | 0x20 | $mapping['cast'];
+            } else {
+                $tag = ($mapping['class'] << 6) | (ord($temp[0]) & 0x20) | $mapping['cast'];
+            }
+        }
+
+        return chr($tag) . self::encodeLength(strlen($value)) . $value;
+    }
+
+    /**
+     * BER-decode the OID
+     *
+     * Called by _decode_ber()
+     *
+     * @param string $content
+     * @return string
+     */
+    public static function decodeOID($content)
+    {
+        static $eighty;
+        if (!$eighty) {
+            $eighty = new BigInteger(80);
+        }
+
+        $oid = [];
+        $pos = 0;
+        $len = strlen($content);
+        // see https://github.com/openjdk/jdk/blob/2deb318c9f047ec5a4b160d66a4b52f93688ec42/src/java.base/share/classes/sun/security/util/ObjectIdentifier.java#L55
+        if ($len > 4096) {
+            //throw new \RuntimeException("Object identifier size is limited to 4096 bytes ($len bytes present)");
+            return false;
+        }
+
+        if (ord($content[$len - 1]) & 0x80) {
+            return false;
+        }
+
+        $n = new BigInteger();
+        while ($pos < $len) {
+            $temp = ord($content[$pos++]);
+            $n = $n->bitwise_leftShift(7);
+            $n = $n->bitwise_or(new BigInteger($temp & 0x7F));
+            if (~$temp & 0x80) {
+                $oid[] = $n;
+                $n = new BigInteger();
+            }
+        }
+        $part1 = array_shift($oid);
+        $first = floor(ord($content[0]) / 40);
+        /*
+          "This packing of the first two object identifier components recognizes that only three values are allocated from the root
+           node, and at most 39 subsequent values from nodes reached by X = 0 and X = 1."
+
+          -- https://www.itu.int/ITU-T/studygroups/com17/languages/X.690-0207.pdf#page=22
+        */
+        if ($first <= 2) { // ie. 0 <= ord($content[0]) < 120 (0x78)
+            array_unshift($oid, ord($content[0]) % 40);
+            array_unshift($oid, $first);
+        } else {
+            array_unshift($oid, $part1->subtract($eighty));
+            array_unshift($oid, 2);
+        }
+
+        return implode('.', $oid);
+    }
+
+    /**
+     * DER-encode the OID
+     *
+     * Called by _encode_der()
+     *
+     * @param string $source
+     * @return string
+     */
+    public static function encodeOID($source)
+    {
+        static $mask, $zero, $forty;
+        if (!$mask) {
+            $mask = new BigInteger(0x7F);
+            $zero = new BigInteger();
+            $forty = new BigInteger(40);
+        }
+
+        if (!preg_match('#(?:\d+\.)+#', $source)) {
+            $oid = isset(self::$reverseOIDs[$source]) ? self::$reverseOIDs[$source] : false;
+        } else {
+            $oid = $source;
+        }
+        if ($oid === false) {
+            throw new \RuntimeException('Invalid OID');
+        }
+
+        $parts = explode('.', $oid);
+        $part1 = array_shift($parts);
+        $part2 = array_shift($parts);
+
+        $first = new BigInteger($part1);
+        $first = $first->multiply($forty);
+        $first = $first->add(new BigInteger($part2));
+
+        array_unshift($parts, $first->toString());
+
+        $value = '';
+        foreach ($parts as $part) {
+            if (!$part) {
+                $temp = "\0";
+            } else {
+                $temp = '';
+                $part = new BigInteger($part);
+                while (!$part->equals($zero)) {
+                    $submask = $part->bitwise_and($mask);
+                    $submask->setPrecision(8);
+                    $temp = (chr(0x80) | $submask->toBytes()) . $temp;
+                    $part = $part->bitwise_rightShift(7);
+                }
+                $temp[strlen($temp) - 1] = $temp[strlen($temp) - 1] & chr(0x7F);
+            }
+            $value .= $temp;
+        }
+
+        return $value;
+    }
+
+    /**
+     * BER-decode the time
+     *
+     * Called by _decode_ber() and in the case of implicit tags asn1map().
+     *
+     * @param string $content
+     * @param int $tag
+     * @return \DateTime|false
+     */
+    private static function decodeTime($content, $tag)
+    {
+        /* UTCTime:
+           http://tools.ietf.org/html/rfc5280#section-4.1.2.5.1
+           http://www.obj-sys.com/asn1tutorial/node15.html
+
+           GeneralizedTime:
+           http://tools.ietf.org/html/rfc5280#section-4.1.2.5.2
+           http://www.obj-sys.com/asn1tutorial/node14.html */
+
+        $format = 'YmdHis';
+
+        if ($tag == self::TYPE_UTC_TIME) {
+            // https://www.itu.int/ITU-T/studygroups/com17/languages/X.690-0207.pdf#page=28 says "the seconds
+            // element shall always be present" but none-the-less I've seen X509 certs where it isn't and if the
+            // browsers parse it phpseclib ought to too
+            if (preg_match('#^(\d{10})(Z|[+-]\d{4})$#', $content, $matches)) {
+                $content = $matches[1] . '00' . $matches[2];
+            }
+            $prefix = substr($content, 0, 2) >= 50 ? '19' : '20';
+            $content = $prefix . $content;
+        } elseif (strpos($content, '.') !== false) {
+            $format .= '.u';
+        }
+
+        if ($content[strlen($content) - 1] == 'Z') {
+            $content = substr($content, 0, -1) . '+0000';
+        }
+
+        if (strpos($content, '-') !== false || strpos($content, '+') !== false) {
+            $format .= 'O';
+        }
+
+        // error supression isn't necessary as of PHP 7.0:
+        // http://php.net/manual/en/migration70.other-changes.php
+        return @\DateTime::createFromFormat($format, $content);
+    }
+
+    /**
+     * Set the time format
+     *
+     * Sets the time / date format for asn1map().
+     *
+     * @param string $format
+     */
+    public static function setTimeFormat($format)
+    {
+        self::$format = $format;
+    }
+
+    /**
+     * Load OIDs
+     *
+     * Load the relevant OIDs for a particular ASN.1 semantic mapping.
+     * Previously loaded OIDs are retained.
+     *
+     * @param array $oids
+     */
+    public static function loadOIDs(array $oids)
+    {
+        self::$reverseOIDs += $oids;
+        self::$oids = array_flip(self::$reverseOIDs);
+    }
+
+    /**
+     * Set filters
+     *
+     * See \phpseclib3\File\X509, etc, for an example.
+     * Previously loaded filters are not retained.
+     *
+     * @param array $filters
+     */
+    public static function setFilters(array $filters)
+    {
+        self::$filters = $filters;
+    }
+
+    /**
+     * String type conversion
+     *
+     * This is a lazy conversion, dealing only with character size.
+     * No real conversion table is used.
+     *
+     * @param string $in
+     * @param int $from
+     * @param int $to
+     * @return string
+     */
+    public static function convert($in, $from = self::TYPE_UTF8_STRING, $to = self::TYPE_UTF8_STRING)
+    {
+        // isset(self::STRING_TYPE_SIZE[$from] returns a fatal error on PHP 5.6
+        if (!array_key_exists($from, self::STRING_TYPE_SIZE) || !array_key_exists($to, self::STRING_TYPE_SIZE)) {
+            return false;
+        }
+        $insize = self::STRING_TYPE_SIZE[$from];
+        $outsize = self::STRING_TYPE_SIZE[$to];
+        $inlength = strlen($in);
+        $out = '';
+
+        for ($i = 0; $i < $inlength;) {
+            if ($inlength - $i < $insize) {
+                return false;
+            }
+
+            // Get an input character as a 32-bit value.
+            $c = ord($in[$i++]);
+            switch (true) {
+                case $insize == 4:
+                    $c = ($c << 8) | ord($in[$i++]);
+                    $c = ($c << 8) | ord($in[$i++]);
+                    // fall-through
+                case $insize == 2:
+                    $c = ($c << 8) | ord($in[$i++]);
+                    // fall-through
+                case $insize == 1:
+                    break;
+                case ($c & 0x80) == 0x00:
+                    break;
+                case ($c & 0x40) == 0x00:
+                    return false;
+                default:
+                    $bit = 6;
+                    do {
+                        if ($bit > 25 || $i >= $inlength || (ord($in[$i]) & 0xC0) != 0x80) {
+                            return false;
+                        }
+                        $c = ($c << 6) | (ord($in[$i++]) & 0x3F);
+                        $bit += 5;
+                        $mask = 1 << $bit;
+                    } while ($c & $bit);
+                    $c &= $mask - 1;
+                    break;
+            }
+
+            // Convert and append the character to output string.
+            $v = '';
+            switch (true) {
+                case $outsize == 4:
+                    $v .= chr($c & 0xFF);
+                    $c >>= 8;
+                    $v .= chr($c & 0xFF);
+                    $c >>= 8;
+                    // fall-through
+                case $outsize == 2:
+                    $v .= chr($c & 0xFF);
+                    $c >>= 8;
+                    // fall-through
+                case $outsize == 1:
+                    $v .= chr($c & 0xFF);
+                    $c >>= 8;
+                    if ($c) {
+                        return false;
+                    }
+                    break;
+                case ($c & (PHP_INT_SIZE == 8 ? 0x80000000 : (1 << 31))) != 0:
+                    return false;
+                case $c >= 0x04000000:
+                    $v .= chr(0x80 | ($c & 0x3F));
+                    $c = ($c >> 6) | 0x04000000;
+                    // fall-through
+                case $c >= 0x00200000:
+                    $v .= chr(0x80 | ($c & 0x3F));
+                    $c = ($c >> 6) | 0x00200000;
+                    // fall-through
+                case $c >= 0x00010000:
+                    $v .= chr(0x80 | ($c & 0x3F));
+                    $c = ($c >> 6) | 0x00010000;
+                    // fall-through
+                case $c >= 0x00000800:
+                    $v .= chr(0x80 | ($c & 0x3F));
+                    $c = ($c >> 6) | 0x00000800;
+                    // fall-through
+                case $c >= 0x00000080:
+                    $v .= chr(0x80 | ($c & 0x3F));
+                    $c = ($c >> 6) | 0x000000C0;
+                    // fall-through
+                default:
+                    $v .= chr($c);
+                    break;
+            }
+            $out .= strrev($v);
+        }
+        return $out;
+    }
+
+    /**
+     * Extract raw BER from Base64 encoding
+     *
+     * @param string $str
+     * @return string
+     */
+    public static function extractBER($str)
+    {
+        /* X.509 certs are assumed to be base64 encoded but sometimes they'll have additional things in them
+         * above and beyond the ceritificate.
+         * ie. some may have the following preceding the -----BEGIN CERTIFICATE----- line:
+         *
+         * Bag Attributes
+         *     localKeyID: 01 00 00 00
+         * subject=/O=organization/OU=org unit/CN=common name
+         * issuer=/O=organization/CN=common name
+         */
+        if (strlen($str) > ini_get('pcre.backtrack_limit')) {
+            $temp = $str;
+        } else {
+            $temp = preg_replace('#.*?^-+[^-]+-+[\r\n ]*$#ms', '', $str, 1);
+            $temp = preg_replace('#-+END.*[\r\n ]*.*#ms', '', $temp, 1);
+        }
+        // remove new lines
+        $temp = str_replace(["\r", "\n", ' '], '', $temp);
+        // remove the -----BEGIN CERTIFICATE----- and -----END CERTIFICATE----- stuff
+        $temp = preg_replace('#^-+[^-]+-+|-+[^-]+-+$#', '', $temp);
+        $temp = preg_match('#^[a-zA-Z\d/+]*={0,2}$#', $temp) ? Strings::base64_decode($temp) : false;
+        return $temp != false ? $temp : $str;
+    }
+
+    /**
+     * DER-encode the length
+     *
+     * DER supports lengths up to (2**8)**127, however, we'll only support lengths up to (2**8)**4.  See
+     * {@link http://itu.int/ITU-T/studygroups/com17/languages/X.690-0207.pdf#p=13 X.690 paragraph 8.1.3} for more information.
+     *
+     * @param int $length
+     * @return string
+     */
+    public static function encodeLength($length)
+    {
+        if ($length <= 0x7F) {
+            return chr($length);
+        }
+
+        $temp = ltrim(pack('N', $length), chr(0));
+        return pack('Ca*', 0x80 | strlen($temp), $temp);
+    }
+
+    /**
+     * Returns the OID corresponding to a name
+     *
+     * What's returned in the associative array returned by loadX509() (or load*()) is either a name or an OID if
+     * no OID to name mapping is available. The problem with this is that what may be an unmapped OID in one version
+     * of phpseclib may not be unmapped in the next version, so apps that are looking at this OID may not be able
+     * to work from version to version.
+     *
+     * This method will return the OID if a name is passed to it and if no mapping is avialable it'll assume that
+     * what's being passed to it already is an OID and return that instead. A few examples.
+     *
+     * getOID('2.16.840.1.101.3.4.2.1') == '2.16.840.1.101.3.4.2.1'
+     * getOID('id-sha256') == '2.16.840.1.101.3.4.2.1'
+     * getOID('zzz') == 'zzz'
+     *
+     * @param string $name
+     * @return string
+     */
+    public static function getOID($name)
+    {
+        return isset(self::$reverseOIDs[$name]) ? self::$reverseOIDs[$name] : $name;
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Element.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Element.php
new file mode 100644
index 0000000..6540b42
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Element.php
@@ -0,0 +1,43 @@
+<?php
+
+/**
+ * ASN.1 Raw Element
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2012 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1;
+
+/**
+ * ASN.1 Raw Element
+ *
+ * An ASN.1 ANY mapping will return an ASN1\Element object. Use of this object
+ * will also bypass the normal encoding rules in ASN1::encodeDER()
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+class Element
+{
+    /**
+     * Raw element value
+     *
+     * @var string
+     */
+    public $element;
+
+    /**
+     * Constructor
+     *
+     * @param string $encoded
+     * @return \phpseclib3\File\ASN1\Element
+     */
+    public function __construct($encoded)
+    {
+        $this->element = $encoded;
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/AccessDescription.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/AccessDescription.php
new file mode 100644
index 0000000..1cbc5a5
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/AccessDescription.php
@@ -0,0 +1,32 @@
+<?php
+
+/**
+ * AccessDescription
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * AccessDescription
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class AccessDescription
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'accessMethod' => ['type' => ASN1::TYPE_OBJECT_IDENTIFIER],
+            'accessLocation' => GeneralName::MAP
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/AdministrationDomainName.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/AdministrationDomainName.php
new file mode 100644
index 0000000..04183a1
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/AdministrationDomainName.php
@@ -0,0 +1,36 @@
+<?php
+
+/**
+ * AdministrationDomainName
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * AdministrationDomainName
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class AdministrationDomainName
+{
+    const MAP = [
+        'type' => ASN1::TYPE_CHOICE,
+        // if class isn't present it's assumed to be \phpseclib3\File\ASN1::CLASS_UNIVERSAL or
+        // (if constant is present) \phpseclib3\File\ASN1::CLASS_CONTEXT_SPECIFIC
+        'class' => ASN1::CLASS_APPLICATION,
+        'cast' => 2,
+        'children' => [
+            'numeric' => ['type' => ASN1::TYPE_NUMERIC_STRING],
+            'printable' => ['type' => ASN1::TYPE_PRINTABLE_STRING]
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/AlgorithmIdentifier.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/AlgorithmIdentifier.php
new file mode 100644
index 0000000..0da7eb1
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/AlgorithmIdentifier.php
@@ -0,0 +1,35 @@
+<?php
+
+/**
+ * AlgorithmIdentifier
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * AlgorithmIdentifier
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class AlgorithmIdentifier
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'algorithm' => ['type' => ASN1::TYPE_OBJECT_IDENTIFIER],
+            'parameters' => [
+                'type' => ASN1::TYPE_ANY,
+                'optional' => true
+            ]
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/AnotherName.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/AnotherName.php
new file mode 100644
index 0000000..d96c170
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/AnotherName.php
@@ -0,0 +1,37 @@
+<?php
+
+/**
+ * AnotherName
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * AnotherName
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class AnotherName
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'type-id' => ['type' => ASN1::TYPE_OBJECT_IDENTIFIER],
+            'value' => [
+                'type' => ASN1::TYPE_ANY,
+                'constant' => 0,
+                'optional' => true,
+                'explicit' => true
+            ]
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/Attribute.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/Attribute.php
new file mode 100644
index 0000000..38a6aee
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/Attribute.php
@@ -0,0 +1,37 @@
+<?php
+
+/**
+ * Attribute
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * Attribute
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class Attribute
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'type' => AttributeType::MAP,
+            'value' => [
+                'type' => ASN1::TYPE_SET,
+                'min' => 1,
+                'max' => -1,
+                'children' => AttributeValue::MAP
+            ]
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/AttributeType.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/AttributeType.php
new file mode 100644
index 0000000..5cbc2bc
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/AttributeType.php
@@ -0,0 +1,26 @@
+<?php
+
+/**
+ * AttributeType
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * AttributeType
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class AttributeType
+{
+    const MAP = ['type' => ASN1::TYPE_OBJECT_IDENTIFIER];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/AttributeTypeAndValue.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/AttributeTypeAndValue.php
new file mode 100644
index 0000000..fe414f1
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/AttributeTypeAndValue.php
@@ -0,0 +1,32 @@
+<?php
+
+/**
+ * AttributeTypeAndValue
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * AttributeTypeAndValue
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class AttributeTypeAndValue
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'type' => AttributeType::MAP,
+            'value' => AttributeValue::MAP
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/AttributeValue.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/AttributeValue.php
new file mode 100644
index 0000000..3b3b6d2
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/AttributeValue.php
@@ -0,0 +1,26 @@
+<?php
+
+/**
+ * AttributeValue
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * AttributeValue
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class AttributeValue
+{
+    const MAP = ['type' => ASN1::TYPE_ANY];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/Attributes.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/Attributes.php
new file mode 100644
index 0000000..cd53ecf
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/Attributes.php
@@ -0,0 +1,31 @@
+<?php
+
+/**
+ * Attributes
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * Attributes
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class Attributes
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SET,
+        'min' => 1,
+        'max' => -1,
+        'children' => Attribute::MAP
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/AuthorityInfoAccessSyntax.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/AuthorityInfoAccessSyntax.php
new file mode 100644
index 0000000..3e80a55
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/AuthorityInfoAccessSyntax.php
@@ -0,0 +1,31 @@
+<?php
+
+/**
+ * AuthorityInfoAccessSyntax
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * AuthorityInfoAccessSyntax
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class AuthorityInfoAccessSyntax
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'min' => 1,
+        'max' => -1,
+        'children' => AccessDescription::MAP
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/AuthorityKeyIdentifier.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/AuthorityKeyIdentifier.php
new file mode 100644
index 0000000..e7ec5b2
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/AuthorityKeyIdentifier.php
@@ -0,0 +1,45 @@
+<?php
+
+/**
+ * AuthorityKeyIdentifier
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * AuthorityKeyIdentifier
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class AuthorityKeyIdentifier
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'keyIdentifier' => [
+                'constant' => 0,
+                'optional' => true,
+                'implicit' => true
+            ] + KeyIdentifier::MAP,
+            'authorityCertIssuer' => [
+                'constant' => 1,
+                'optional' => true,
+                'implicit' => true
+            ] + GeneralNames::MAP,
+            'authorityCertSerialNumber' => [
+                'constant' => 2,
+                'optional' => true,
+                'implicit' => true
+            ] + CertificateSerialNumber::MAP
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/BaseDistance.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/BaseDistance.php
new file mode 100644
index 0000000..e59668a
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/BaseDistance.php
@@ -0,0 +1,26 @@
+<?php
+
+/**
+ * BaseDistance
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * BaseDistance
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class BaseDistance
+{
+    const MAP = ['type' => ASN1::TYPE_INTEGER];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/BasicConstraints.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/BasicConstraints.php
new file mode 100644
index 0000000..587ef1b
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/BasicConstraints.php
@@ -0,0 +1,39 @@
+<?php
+
+/**
+ * BasicConstraints
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * BasicConstraints
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class BasicConstraints
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'cA' => [
+                'type' => ASN1::TYPE_BOOLEAN,
+                'optional' => true,
+                'default' => false
+            ],
+            'pathLenConstraint' => [
+                'type' => ASN1::TYPE_INTEGER,
+                'optional' => true
+            ]
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/BuiltInDomainDefinedAttribute.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/BuiltInDomainDefinedAttribute.php
new file mode 100644
index 0000000..e81bc78
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/BuiltInDomainDefinedAttribute.php
@@ -0,0 +1,32 @@
+<?php
+
+/**
+ * BuiltInDomainDefinedAttribute
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * BuiltInDomainDefinedAttribute
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class BuiltInDomainDefinedAttribute
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'type' => ['type' => ASN1::TYPE_PRINTABLE_STRING],
+            'value' => ['type' => ASN1::TYPE_PRINTABLE_STRING]
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/BuiltInDomainDefinedAttributes.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/BuiltInDomainDefinedAttributes.php
new file mode 100644
index 0000000..471e88f
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/BuiltInDomainDefinedAttributes.php
@@ -0,0 +1,31 @@
+<?php
+
+/**
+ * BuiltInDomainDefinedAttributes
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * BuiltInDomainDefinedAttributes
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class BuiltInDomainDefinedAttributes
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'min' => 1,
+        'max' => 4, // ub-domain-defined-attributes
+        'children' => BuiltInDomainDefinedAttribute::MAP
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/BuiltInStandardAttributes.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/BuiltInStandardAttributes.php
new file mode 100644
index 0000000..752f400
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/BuiltInStandardAttributes.php
@@ -0,0 +1,67 @@
+<?php
+
+/**
+ * BuiltInStandardAttributes
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * BuiltInStandardAttributes
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class BuiltInStandardAttributes
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'country-name' => ['optional' => true] + CountryName::MAP,
+            'administration-domain-name' => ['optional' => true] + AdministrationDomainName::MAP,
+            'network-address' => [
+                'constant' => 0,
+                'optional' => true,
+                'implicit' => true
+            ] + NetworkAddress::MAP,
+            'terminal-identifier' => [
+                'constant' => 1,
+                'optional' => true,
+                'implicit' => true
+            ] + TerminalIdentifier::MAP,
+            'private-domain-name' => [
+                'constant' => 2,
+                'optional' => true,
+                'explicit' => true
+            ] + PrivateDomainName::MAP,
+            'organization-name' => [
+                'constant' => 3,
+                'optional' => true,
+                'implicit' => true
+            ] + OrganizationName::MAP,
+            'numeric-user-identifier' => [
+                'constant' => 4,
+                'optional' => true,
+                'implicit' => true
+            ] + NumericUserIdentifier::MAP,
+            'personal-name' => [
+                'constant' => 5,
+                'optional' => true,
+                'implicit' => true
+            ] + PersonalName::MAP,
+            'organizational-unit-names' => [
+                'constant' => 6,
+                'optional' => true,
+                'implicit' => true
+            ] + OrganizationalUnitNames::MAP
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/CPSuri.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/CPSuri.php
new file mode 100644
index 0000000..56e5888
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/CPSuri.php
@@ -0,0 +1,26 @@
+<?php
+
+/**
+ * CPSuri
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * CPSuri
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class CPSuri
+{
+    const MAP = ['type' => ASN1::TYPE_IA5_STRING];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/CRLDistributionPoints.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/CRLDistributionPoints.php
new file mode 100644
index 0000000..79860b2
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/CRLDistributionPoints.php
@@ -0,0 +1,31 @@
+<?php
+
+/**
+ * CRLDistributionPoints
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * CRLDistributionPoints
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class CRLDistributionPoints
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'min' => 1,
+        'max' => -1,
+        'children' => DistributionPoint::MAP
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/CRLNumber.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/CRLNumber.php
new file mode 100644
index 0000000..f6cb956
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/CRLNumber.php
@@ -0,0 +1,26 @@
+<?php
+
+/**
+ * CRLNumber
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * CRLNumber
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class CRLNumber
+{
+    const MAP = ['type' => ASN1::TYPE_INTEGER];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/CRLReason.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/CRLReason.php
new file mode 100644
index 0000000..d373652
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/CRLReason.php
@@ -0,0 +1,41 @@
+<?php
+
+/**
+ * CRLReason
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * CRLReason
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class CRLReason
+{
+    const MAP = [
+        'type' => ASN1::TYPE_ENUMERATED,
+        'mapping' => [
+            'unspecified',
+            'keyCompromise',
+            'cACompromise',
+            'affiliationChanged',
+            'superseded',
+            'cessationOfOperation',
+            'certificateHold',
+            // Value 7 is not used.
+            8 => 'removeFromCRL',
+            'privilegeWithdrawn',
+            'aACompromise'
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/CertPolicyId.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/CertPolicyId.php
new file mode 100644
index 0000000..d7e7776
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/CertPolicyId.php
@@ -0,0 +1,26 @@
+<?php
+
+/**
+ * CertPolicyId
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * CertPolicyId
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class CertPolicyId
+{
+    const MAP = ['type' => ASN1::TYPE_OBJECT_IDENTIFIER];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/Certificate.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/Certificate.php
new file mode 100644
index 0000000..01943a0
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/Certificate.php
@@ -0,0 +1,33 @@
+<?php
+
+/**
+ * Certificate
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * Certificate
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class Certificate
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'tbsCertificate' => TBSCertificate::MAP,
+            'signatureAlgorithm' => AlgorithmIdentifier::MAP,
+            'signature' => ['type' => ASN1::TYPE_BIT_STRING]
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/CertificateIssuer.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/CertificateIssuer.php
new file mode 100644
index 0000000..ccd68dd
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/CertificateIssuer.php
@@ -0,0 +1,24 @@
+<?php
+
+/**
+ * CertificateIssuer
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+/**
+ * CertificateIssuer
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class CertificateIssuer
+{
+    const MAP = GeneralNames::MAP;
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/CertificateList.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/CertificateList.php
new file mode 100644
index 0000000..d54ed6d
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/CertificateList.php
@@ -0,0 +1,33 @@
+<?php
+
+/**
+ * CertificateList
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * CertificateList
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class CertificateList
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'tbsCertList' => TBSCertList::MAP,
+            'signatureAlgorithm' => AlgorithmIdentifier::MAP,
+            'signature' => ['type' => ASN1::TYPE_BIT_STRING]
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/CertificatePolicies.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/CertificatePolicies.php
new file mode 100644
index 0000000..ec0fa6b
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/CertificatePolicies.php
@@ -0,0 +1,31 @@
+<?php
+
+/**
+ * CertificatePolicies
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * CertificatePolicies
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class CertificatePolicies
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'min' => 1,
+        'max' => -1,
+        'children' => PolicyInformation::MAP
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/CertificateSerialNumber.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/CertificateSerialNumber.php
new file mode 100644
index 0000000..06ec944
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/CertificateSerialNumber.php
@@ -0,0 +1,26 @@
+<?php
+
+/**
+ * CertificateSerialNumber
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * CertificateSerialNumber
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class CertificateSerialNumber
+{
+    const MAP = ['type' => ASN1::TYPE_INTEGER];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/CertificationRequest.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/CertificationRequest.php
new file mode 100644
index 0000000..2da70ed
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/CertificationRequest.php
@@ -0,0 +1,33 @@
+<?php
+
+/**
+ * CertificationRequest
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * CertificationRequest
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class CertificationRequest
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'certificationRequestInfo' => CertificationRequestInfo::MAP,
+            'signatureAlgorithm' => AlgorithmIdentifier::MAP,
+            'signature' => ['type' => ASN1::TYPE_BIT_STRING]
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/CertificationRequestInfo.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/CertificationRequestInfo.php
new file mode 100644
index 0000000..ce6dc88
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/CertificationRequestInfo.php
@@ -0,0 +1,41 @@
+<?php
+
+/**
+ * CertificationRequestInfo
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * CertificationRequestInfo
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class CertificationRequestInfo
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'version' => [
+                'type' => ASN1::TYPE_INTEGER,
+                'mapping' => ['v1']
+            ],
+            'subject' => Name::MAP,
+            'subjectPKInfo' => SubjectPublicKeyInfo::MAP,
+            'attributes' => [
+                'constant' => 0,
+                'optional' => true,
+                'implicit' => true
+            ] + Attributes::MAP,
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/Characteristic_two.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/Characteristic_two.php
new file mode 100644
index 0000000..5bf59bb
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/Characteristic_two.php
@@ -0,0 +1,36 @@
+<?php
+
+/**
+ * Characteristic_two
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * Characteristic_two
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class Characteristic_two
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'm' => ['type' => ASN1::TYPE_INTEGER], // field size 2**m
+            'basis' => ['type' => ASN1::TYPE_OBJECT_IDENTIFIER],
+            'parameters' => [
+                'type' => ASN1::TYPE_ANY,
+                'optional' => true
+            ]
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/CountryName.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/CountryName.php
new file mode 100644
index 0000000..737d844
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/CountryName.php
@@ -0,0 +1,36 @@
+<?php
+
+/**
+ * CountryName
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * CountryName
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class CountryName
+{
+    const MAP = [
+        'type' => ASN1::TYPE_CHOICE,
+        // if class isn't present it's assumed to be \phpseclib3\File\ASN1::CLASS_UNIVERSAL or
+        // (if constant is present) \phpseclib3\File\ASN1::CLASS_CONTEXT_SPECIFIC
+        'class' => ASN1::CLASS_APPLICATION,
+        'cast' => 1,
+        'children' => [
+            'x121-dcc-code' => ['type' => ASN1::TYPE_NUMERIC_STRING],
+            'iso-3166-alpha2-code' => ['type' => ASN1::TYPE_PRINTABLE_STRING]
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/Curve.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/Curve.php
new file mode 100644
index 0000000..621f103
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/Curve.php
@@ -0,0 +1,36 @@
+<?php
+
+/**
+ * Curve
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * Curve
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class Curve
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'a' => FieldElement::MAP,
+            'b' => FieldElement::MAP,
+            'seed' => [
+                'type' => ASN1::TYPE_BIT_STRING,
+                'optional' => true
+            ]
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/DHParameter.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/DHParameter.php
new file mode 100644
index 0000000..26863db
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/DHParameter.php
@@ -0,0 +1,38 @@
+<?php
+
+/**
+ * DHParameter
+ *
+ * From: https://www.teletrust.de/fileadmin/files/oid/oid_pkcs-3v1-4.pdf#page=6
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * DHParameter
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class DHParameter
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'prime' => ['type' => ASN1::TYPE_INTEGER],
+            'base' => ['type' => ASN1::TYPE_INTEGER],
+            'privateValueLength' => [
+                'type' => ASN1::TYPE_INTEGER,
+                'optional' => true
+            ]
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/DSAParams.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/DSAParams.php
new file mode 100644
index 0000000..7af397b
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/DSAParams.php
@@ -0,0 +1,33 @@
+<?php
+
+/**
+ * DSAParams
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * DSAParams
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class DSAParams
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'p' => ['type' => ASN1::TYPE_INTEGER],
+            'q' => ['type' => ASN1::TYPE_INTEGER],
+            'g' => ['type' => ASN1::TYPE_INTEGER]
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/DSAPrivateKey.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/DSAPrivateKey.php
new file mode 100644
index 0000000..d97cd02
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/DSAPrivateKey.php
@@ -0,0 +1,36 @@
+<?php
+
+/**
+ * DSAPrivateKey
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * DSAPrivateKey
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class DSAPrivateKey
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'version' => ['type' => ASN1::TYPE_INTEGER],
+            'p' => ['type' => ASN1::TYPE_INTEGER],
+            'q' => ['type' => ASN1::TYPE_INTEGER],
+            'g' => ['type' => ASN1::TYPE_INTEGER],
+            'y' => ['type' => ASN1::TYPE_INTEGER],
+            'x' => ['type' => ASN1::TYPE_INTEGER]
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/DSAPublicKey.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/DSAPublicKey.php
new file mode 100644
index 0000000..f795747
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/DSAPublicKey.php
@@ -0,0 +1,26 @@
+<?php
+
+/**
+ * DSAPublicKey
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * DSAPublicKey
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class DSAPublicKey
+{
+    const MAP = ['type' => ASN1::TYPE_INTEGER];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/DigestInfo.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/DigestInfo.php
new file mode 100644
index 0000000..b38ff3c
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/DigestInfo.php
@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * DigestInfo
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * DigestInfo
+ *
+ * from https://tools.ietf.org/html/rfc2898#appendix-A.3
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class DigestInfo
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'digestAlgorithm' => AlgorithmIdentifier::MAP,
+            'digest' => ['type' => ASN1::TYPE_OCTET_STRING]
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/DirectoryString.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/DirectoryString.php
new file mode 100644
index 0000000..45218e3
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/DirectoryString.php
@@ -0,0 +1,35 @@
+<?php
+
+/**
+ * DirectoryString
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * DirectoryString
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class DirectoryString
+{
+    const MAP = [
+        'type' => ASN1::TYPE_CHOICE,
+        'children' => [
+            'teletexString' => ['type' => ASN1::TYPE_TELETEX_STRING],
+            'printableString' => ['type' => ASN1::TYPE_PRINTABLE_STRING],
+            'universalString' => ['type' => ASN1::TYPE_UNIVERSAL_STRING],
+            'utf8String' => ['type' => ASN1::TYPE_UTF8_STRING],
+            'bmpString' => ['type' => ASN1::TYPE_BMP_STRING]
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/DisplayText.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/DisplayText.php
new file mode 100644
index 0000000..a13e6a6
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/DisplayText.php
@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * DisplayText
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * DisplayText
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class DisplayText
+{
+    const MAP = [
+        'type' => ASN1::TYPE_CHOICE,
+        'children' => [
+            'ia5String' => ['type' => ASN1::TYPE_IA5_STRING],
+            'visibleString' => ['type' => ASN1::TYPE_VISIBLE_STRING],
+            'bmpString' => ['type' => ASN1::TYPE_BMP_STRING],
+            'utf8String' => ['type' => ASN1::TYPE_UTF8_STRING]
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/DistributionPoint.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/DistributionPoint.php
new file mode 100644
index 0000000..4d9af6b
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/DistributionPoint.php
@@ -0,0 +1,45 @@
+<?php
+
+/**
+ * DistributionPoint
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * DistributionPoint
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class DistributionPoint
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'distributionPoint' => [
+                'constant' => 0,
+                'optional' => true,
+                'explicit' => true
+            ] + DistributionPointName::MAP,
+            'reasons' => [
+                'constant' => 1,
+                'optional' => true,
+                'implicit' => true
+            ] + ReasonFlags::MAP,
+            'cRLIssuer' => [
+                'constant' => 2,
+                'optional' => true,
+                'implicit' => true
+            ] + GeneralNames::MAP
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/DistributionPointName.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/DistributionPointName.php
new file mode 100644
index 0000000..bc0cec8
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/DistributionPointName.php
@@ -0,0 +1,40 @@
+<?php
+
+/**
+ * DistributionPointName
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * DistributionPointName
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class DistributionPointName
+{
+    const MAP = [
+        'type' => ASN1::TYPE_CHOICE,
+        'children' => [
+            'fullName' => [
+                'constant' => 0,
+                'optional' => true,
+                'implicit' => true
+            ] + GeneralNames::MAP,
+            'nameRelativeToCRLIssuer' => [
+                'constant' => 1,
+                'optional' => true,
+                'implicit' => true
+            ] + RelativeDistinguishedName::MAP
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/DssSigValue.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/DssSigValue.php
new file mode 100644
index 0000000..2af7408
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/DssSigValue.php
@@ -0,0 +1,32 @@
+<?php
+
+/**
+ * DssSigValue
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * DssSigValue
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class DssSigValue
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'r' => ['type' => ASN1::TYPE_INTEGER],
+            's' => ['type' => ASN1::TYPE_INTEGER]
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/ECParameters.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/ECParameters.php
new file mode 100644
index 0000000..f25f6fa
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/ECParameters.php
@@ -0,0 +1,45 @@
+<?php
+
+/**
+ * ECParameters
+ *
+ * From: https://tools.ietf.org/html/rfc5915
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * ECParameters
+ *
+ *  ECParameters ::= CHOICE {
+ *    namedCurve         OBJECT IDENTIFIER
+ *    -- implicitCurve   NULL
+ *    -- specifiedCurve  SpecifiedECDomain
+ *  }
+ *    -- implicitCurve and specifiedCurve MUST NOT be used in PKIX.
+ *    -- Details for SpecifiedECDomain can be found in [X9.62].
+ *    -- Any future additions to this CHOICE should be coordinated
+ *    -- with ANSI X9.
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class ECParameters
+{
+    const MAP = [
+        'type' => ASN1::TYPE_CHOICE,
+        'children' => [
+            'namedCurve' => ['type' => ASN1::TYPE_OBJECT_IDENTIFIER],
+            'implicitCurve' => ['type' => ASN1::TYPE_NULL],
+            'specifiedCurve' => SpecifiedECDomain::MAP
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/ECPoint.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/ECPoint.php
new file mode 100644
index 0000000..fb11db8
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/ECPoint.php
@@ -0,0 +1,26 @@
+<?php
+
+/**
+ * ECPoint
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * ECPoint
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class ECPoint
+{
+    const MAP = ['type' => ASN1::TYPE_OCTET_STRING];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/ECPrivateKey.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/ECPrivateKey.php
new file mode 100644
index 0000000..7454f38
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/ECPrivateKey.php
@@ -0,0 +1,48 @@
+<?php
+
+/**
+ * ECPrivateKey
+ *
+ * From: https://tools.ietf.org/html/rfc5915
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * ECPrivateKey
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class ECPrivateKey
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'version' => [
+                'type' => ASN1::TYPE_INTEGER,
+                'mapping' => [1 => 'ecPrivkeyVer1']
+            ],
+            'privateKey' => ['type' => ASN1::TYPE_OCTET_STRING],
+            'parameters' => [
+                'constant' => 0,
+                'optional' => true,
+                'explicit' => true
+            ] + ECParameters::MAP,
+            'publicKey' => [
+                'type' => ASN1::TYPE_BIT_STRING,
+                'constant' => 1,
+                'optional' => true,
+                'explicit' => true
+            ]
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/EDIPartyName.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/EDIPartyName.php
new file mode 100644
index 0000000..ea7dcf1
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/EDIPartyName.php
@@ -0,0 +1,42 @@
+<?php
+
+/**
+ * EDIPartyName
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * EDIPartyName
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class EDIPartyName
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'nameAssigner' => [
+                'constant' => 0,
+                'optional' => true,
+                'implicit' => true
+            ] + DirectoryString::MAP,
+            // partyName is technically required but \phpseclib3\File\ASN1 doesn't currently support non-optional constants and
+            // setting it to optional gets the job done in any event.
+            'partyName' => [
+                'constant' => 1,
+                'optional' => true,
+                'implicit' => true
+            ] + DirectoryString::MAP
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/EcdsaSigValue.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/EcdsaSigValue.php
new file mode 100644
index 0000000..8ab9ff1
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/EcdsaSigValue.php
@@ -0,0 +1,32 @@
+<?php
+
+/**
+ * EcdsaSigValue
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * EcdsaSigValue
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class EcdsaSigValue
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'r' => ['type' => ASN1::TYPE_INTEGER],
+            's' => ['type' => ASN1::TYPE_INTEGER]
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/EncryptedData.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/EncryptedData.php
new file mode 100644
index 0000000..8d8739e
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/EncryptedData.php
@@ -0,0 +1,26 @@
+<?php
+
+/**
+ * EncryptedData
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * EncryptedData
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class EncryptedData
+{
+    const MAP = ['type' => ASN1::TYPE_OCTET_STRING];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/EncryptedPrivateKeyInfo.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/EncryptedPrivateKeyInfo.php
new file mode 100644
index 0000000..2c93567
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/EncryptedPrivateKeyInfo.php
@@ -0,0 +1,32 @@
+<?php
+
+/**
+ * EncryptedPrivateKeyInfo
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * EncryptedPrivateKeyInfo
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class EncryptedPrivateKeyInfo
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'encryptionAlgorithm' => AlgorithmIdentifier::MAP,
+            'encryptedData' => EncryptedData::MAP
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/ExtKeyUsageSyntax.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/ExtKeyUsageSyntax.php
new file mode 100644
index 0000000..f9bc5de
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/ExtKeyUsageSyntax.php
@@ -0,0 +1,31 @@
+<?php
+
+/**
+ * ExtKeyUsageSyntax
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * ExtKeyUsageSyntax
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class ExtKeyUsageSyntax
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'min' => 1,
+        'max' => -1,
+        'children' => KeyPurposeId::MAP
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/Extension.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/Extension.php
new file mode 100644
index 0000000..e32668f
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/Extension.php
@@ -0,0 +1,43 @@
+<?php
+
+/**
+ * Extension
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * Extension
+ *
+ * A certificate using system MUST reject the certificate if it encounters
+ * a critical extension it does not recognize; however, a non-critical
+ * extension may be ignored if it is not recognized.
+ *
+ * http://tools.ietf.org/html/rfc5280#section-4.2
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class Extension
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'extnId' => ['type' => ASN1::TYPE_OBJECT_IDENTIFIER],
+            'critical' => [
+                'type' => ASN1::TYPE_BOOLEAN,
+                'optional' => true,
+                'default' => false
+            ],
+            'extnValue' => ['type' => ASN1::TYPE_OCTET_STRING]
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/ExtensionAttribute.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/ExtensionAttribute.php
new file mode 100644
index 0000000..565b36d
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/ExtensionAttribute.php
@@ -0,0 +1,42 @@
+<?php
+
+/**
+ * ExtensionAttribute
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * ExtensionAttribute
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class ExtensionAttribute
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'extension-attribute-type' => [
+                'type' => ASN1::TYPE_PRINTABLE_STRING,
+                'constant' => 0,
+                'optional' => true,
+                'implicit' => true
+            ],
+            'extension-attribute-value' => [
+                'type' => ASN1::TYPE_ANY,
+                'constant' => 1,
+                'optional' => true,
+                'explicit' => true
+            ]
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/ExtensionAttributes.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/ExtensionAttributes.php
new file mode 100644
index 0000000..a2e9bfa
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/ExtensionAttributes.php
@@ -0,0 +1,31 @@
+<?php
+
+/**
+ * ExtensionAttributes
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * ExtensionAttributes
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class ExtensionAttributes
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SET,
+        'min' => 1,
+        'max' => 256, // ub-extension-attributes
+        'children' => ExtensionAttribute::MAP
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/Extensions.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/Extensions.php
new file mode 100644
index 0000000..5015c97
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/Extensions.php
@@ -0,0 +1,33 @@
+<?php
+
+/**
+ * Extensions
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * Extensions
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class Extensions
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'min' => 1,
+        // technically, it's MAX, but we'll assume anything < 0 is MAX
+        'max' => -1,
+        // if 'children' isn't an array then 'min' and 'max' must be defined
+        'children' => Extension::MAP
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/FieldElement.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/FieldElement.php
new file mode 100644
index 0000000..3173407
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/FieldElement.php
@@ -0,0 +1,26 @@
+<?php
+
+/**
+ * FieldElement
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * FieldElement
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class FieldElement
+{
+    const MAP = ['type' => ASN1::TYPE_OCTET_STRING];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/FieldID.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/FieldID.php
new file mode 100644
index 0000000..e32a9c0
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/FieldID.php
@@ -0,0 +1,35 @@
+<?php
+
+/**
+ * FieldID
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * FieldID
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class FieldID
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'fieldType' => ['type' => ASN1::TYPE_OBJECT_IDENTIFIER],
+            'parameters' => [
+                'type' => ASN1::TYPE_ANY,
+                'optional' => true
+            ]
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/GeneralName.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/GeneralName.php
new file mode 100644
index 0000000..57d86da
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/GeneralName.php
@@ -0,0 +1,80 @@
+<?php
+
+/**
+ * GeneralName
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * GeneralName
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class GeneralName
+{
+    const MAP = [
+        'type' => ASN1::TYPE_CHOICE,
+        'children' => [
+            'otherName' => [
+                'constant' => 0,
+                'optional' => true,
+                'implicit' => true
+            ] + AnotherName::MAP,
+            'rfc822Name' => [
+                'type' => ASN1::TYPE_IA5_STRING,
+                'constant' => 1,
+                'optional' => true,
+                'implicit' => true
+            ],
+            'dNSName' => [
+                'type' => ASN1::TYPE_IA5_STRING,
+                'constant' => 2,
+                'optional' => true,
+                'implicit' => true
+            ],
+            'x400Address' => [
+                'constant' => 3,
+                'optional' => true,
+                'implicit' => true
+            ] + ORAddress::MAP,
+            'directoryName' => [
+                'constant' => 4,
+                'optional' => true,
+                'explicit' => true
+            ] + Name::MAP,
+            'ediPartyName' => [
+                'constant' => 5,
+                'optional' => true,
+                'implicit' => true
+            ] + EDIPartyName::MAP,
+            'uniformResourceIdentifier' => [
+                'type' => ASN1::TYPE_IA5_STRING,
+                'constant' => 6,
+                'optional' => true,
+                'implicit' => true
+            ],
+            'iPAddress' => [
+                'type' => ASN1::TYPE_OCTET_STRING,
+                'constant' => 7,
+                'optional' => true,
+                'implicit' => true
+            ],
+            'registeredID' => [
+                'type' => ASN1::TYPE_OBJECT_IDENTIFIER,
+                'constant' => 8,
+                'optional' => true,
+                'implicit' => true
+            ]
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/GeneralNames.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/GeneralNames.php
new file mode 100644
index 0000000..5d93153
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/GeneralNames.php
@@ -0,0 +1,31 @@
+<?php
+
+/**
+ * GeneralNames
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * GeneralNames
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class GeneralNames
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'min' => 1,
+        'max' => -1,
+        'children' => GeneralName::MAP
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/GeneralSubtree.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/GeneralSubtree.php
new file mode 100644
index 0000000..5388db5
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/GeneralSubtree.php
@@ -0,0 +1,42 @@
+<?php
+
+/**
+ * GeneralSubtree
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * GeneralSubtree
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class GeneralSubtree
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'base' => GeneralName::MAP,
+            'minimum' => [
+                'constant' => 0,
+                'optional' => true,
+                'implicit' => true,
+                'default' => '0'
+            ] + BaseDistance::MAP,
+            'maximum' => [
+                'constant' => 1,
+                'optional' => true,
+                'implicit' => true,
+            ] + BaseDistance::MAP
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/GeneralSubtrees.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/GeneralSubtrees.php
new file mode 100644
index 0000000..27548cf
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/GeneralSubtrees.php
@@ -0,0 +1,31 @@
+<?php
+
+/**
+ * GeneralSubtrees
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * GeneralSubtrees
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class GeneralSubtrees
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'min' => 1,
+        'max' => -1,
+        'children' => GeneralSubtree::MAP
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/HashAlgorithm.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/HashAlgorithm.php
new file mode 100644
index 0000000..deb13ca
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/HashAlgorithm.php
@@ -0,0 +1,24 @@
+<?php
+
+/**
+ * HashAglorithm
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+/**
+ * HashAglorithm
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class HashAlgorithm
+{
+    const MAP = AlgorithmIdentifier::MAP;
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/HoldInstructionCode.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/HoldInstructionCode.php
new file mode 100644
index 0000000..88d6ff3
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/HoldInstructionCode.php
@@ -0,0 +1,26 @@
+<?php
+
+/**
+ * HoldInstructionCode
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * HoldInstructionCode
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class HoldInstructionCode
+{
+    const MAP = ['type' => ASN1::TYPE_OBJECT_IDENTIFIER];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/InvalidityDate.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/InvalidityDate.php
new file mode 100644
index 0000000..f34b5f7
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/InvalidityDate.php
@@ -0,0 +1,26 @@
+<?php
+
+/**
+ * InvalidityDate
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * InvalidityDate
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class InvalidityDate
+{
+    const MAP = ['type' => ASN1::TYPE_GENERALIZED_TIME];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/IssuerAltName.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/IssuerAltName.php
new file mode 100644
index 0000000..e9d0324
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/IssuerAltName.php
@@ -0,0 +1,24 @@
+<?php
+
+/**
+ * IssuerAltName
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+/**
+ * IssuerAltName
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class IssuerAltName
+{
+    const MAP = GeneralNames::MAP;
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/IssuingDistributionPoint.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/IssuingDistributionPoint.php
new file mode 100644
index 0000000..415996f
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/IssuingDistributionPoint.php
@@ -0,0 +1,68 @@
+<?php
+
+/**
+ * IssuingDistributionPoint
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * IssuingDistributionPoint
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class IssuingDistributionPoint
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'distributionPoint' => [
+                'constant' => 0,
+                'optional' => true,
+                'explicit' => true
+            ] + DistributionPointName::MAP,
+            'onlyContainsUserCerts' => [
+                'type' => ASN1::TYPE_BOOLEAN,
+                'constant' => 1,
+                'optional' => true,
+                'default' => false,
+                'implicit' => true
+            ],
+            'onlyContainsCACerts' => [
+                'type' => ASN1::TYPE_BOOLEAN,
+                'constant' => 2,
+                'optional' => true,
+                'default' => false,
+                'implicit' => true
+            ],
+            'onlySomeReasons' => [
+                'constant' => 3,
+                'optional' => true,
+                'implicit' => true
+            ] + ReasonFlags::MAP,
+            'indirectCRL' => [
+                'type' => ASN1::TYPE_BOOLEAN,
+                'constant' => 4,
+                'optional' => true,
+                'default' => false,
+                'implicit' => true
+            ],
+            'onlyContainsAttributeCerts' => [
+                'type' => ASN1::TYPE_BOOLEAN,
+                'constant' => 5,
+                'optional' => true,
+                'default' => false,
+                'implicit' => true
+            ]
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/KeyIdentifier.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/KeyIdentifier.php
new file mode 100644
index 0000000..82a4151
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/KeyIdentifier.php
@@ -0,0 +1,26 @@
+<?php
+
+/**
+ * KeyIdentifier
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * KeyIdentifier
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class KeyIdentifier
+{
+    const MAP = ['type' => ASN1::TYPE_OCTET_STRING];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/KeyPurposeId.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/KeyPurposeId.php
new file mode 100644
index 0000000..b8509f1
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/KeyPurposeId.php
@@ -0,0 +1,26 @@
+<?php
+
+/**
+ * KeyPurposeId
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * KeyPurposeId
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class KeyPurposeId
+{
+    const MAP = ['type' => ASN1::TYPE_OBJECT_IDENTIFIER];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/KeyUsage.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/KeyUsage.php
new file mode 100644
index 0000000..827ce03
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/KeyUsage.php
@@ -0,0 +1,39 @@
+<?php
+
+/**
+ * KeyUsage
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * KeyUsage
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class KeyUsage
+{
+    const MAP = [
+        'type' => ASN1::TYPE_BIT_STRING,
+        'mapping' => [
+            'digitalSignature',
+            'nonRepudiation',
+            'keyEncipherment',
+            'dataEncipherment',
+            'keyAgreement',
+            'keyCertSign',
+            'cRLSign',
+            'encipherOnly',
+            'decipherOnly'
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/MaskGenAlgorithm.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/MaskGenAlgorithm.php
new file mode 100644
index 0000000..ea3f998
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/MaskGenAlgorithm.php
@@ -0,0 +1,24 @@
+<?php
+
+/**
+ * MaskGenAglorithm
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+/**
+ * MaskGenAglorithm
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class MaskGenAlgorithm
+{
+    const MAP = AlgorithmIdentifier::MAP;
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/Name.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/Name.php
new file mode 100644
index 0000000..a6a9009
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/Name.php
@@ -0,0 +1,31 @@
+<?php
+
+/**
+ * Name
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * Name
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class Name
+{
+    const MAP = [
+        'type' => ASN1::TYPE_CHOICE,
+        'children' => [
+            'rdnSequence' => RDNSequence::MAP
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/NameConstraints.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/NameConstraints.php
new file mode 100644
index 0000000..80486f9
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/NameConstraints.php
@@ -0,0 +1,40 @@
+<?php
+
+/**
+ * NameConstraints
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * NameConstraints
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class NameConstraints
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'permittedSubtrees' => [
+                'constant' => 0,
+                'optional' => true,
+                'implicit' => true
+            ] + GeneralSubtrees::MAP,
+            'excludedSubtrees' => [
+                'constant' => 1,
+                'optional' => true,
+                'implicit' => true
+            ] + GeneralSubtrees::MAP
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/NetworkAddress.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/NetworkAddress.php
new file mode 100644
index 0000000..6c68df0
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/NetworkAddress.php
@@ -0,0 +1,26 @@
+<?php
+
+/**
+ * NetworkAddress
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * NetworkAddress
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class NetworkAddress
+{
+    const MAP = ['type' => ASN1::TYPE_NUMERIC_STRING];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/NoticeReference.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/NoticeReference.php
new file mode 100644
index 0000000..9eec123
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/NoticeReference.php
@@ -0,0 +1,37 @@
+<?php
+
+/**
+ * NoticeReference
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * NoticeReference
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class NoticeReference
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'organization' => DisplayText::MAP,
+            'noticeNumbers' => [
+                'type' => ASN1::TYPE_SEQUENCE,
+                'min' => 1,
+                'max' => 200,
+                'children' => ['type' => ASN1::TYPE_INTEGER]
+            ]
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/NumericUserIdentifier.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/NumericUserIdentifier.php
new file mode 100644
index 0000000..635a89d
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/NumericUserIdentifier.php
@@ -0,0 +1,26 @@
+<?php
+
+/**
+ * NumericUserIdentifier
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * NumericUserIdentifier
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class NumericUserIdentifier
+{
+    const MAP = ['type' => ASN1::TYPE_NUMERIC_STRING];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/ORAddress.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/ORAddress.php
new file mode 100644
index 0000000..b853abe
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/ORAddress.php
@@ -0,0 +1,33 @@
+<?php
+
+/**
+ * ORAddress
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * ORAddress
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class ORAddress
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'built-in-standard-attributes' => BuiltInStandardAttributes::MAP,
+            'built-in-domain-defined-attributes' => ['optional' => true] + BuiltInDomainDefinedAttributes::MAP,
+            'extension-attributes' => ['optional' => true] + ExtensionAttributes::MAP
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/OneAsymmetricKey.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/OneAsymmetricKey.php
new file mode 100644
index 0000000..5953024
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/OneAsymmetricKey.php
@@ -0,0 +1,48 @@
+<?php
+
+/**
+ * OneAsymmetricKey
+ *
+ * See https://tools.ietf.org/html/rfc5958
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * OneAsymmetricKey
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class OneAsymmetricKey
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'version' => [
+                'type' => ASN1::TYPE_INTEGER,
+                'mapping' => ['v1', 'v2']
+            ],
+            'privateKeyAlgorithm' => AlgorithmIdentifier::MAP,
+            'privateKey' => PrivateKey::MAP,
+            'attributes' => [
+                'constant' => 0,
+                'optional' => true,
+                'implicit' => true
+            ] + Attributes::MAP,
+            'publicKey' => [
+                'constant' => 1,
+                'optional' => true,
+                'implicit' => true
+            ] + PublicKey::MAP
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/OrganizationName.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/OrganizationName.php
new file mode 100644
index 0000000..b5cc949
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/OrganizationName.php
@@ -0,0 +1,26 @@
+<?php
+
+/**
+ * OrganizationName
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * OrganizationName
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class OrganizationName
+{
+    const MAP = ['type' => ASN1::TYPE_PRINTABLE_STRING];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/OrganizationalUnitNames.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/OrganizationalUnitNames.php
new file mode 100644
index 0000000..b3e5780
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/OrganizationalUnitNames.php
@@ -0,0 +1,31 @@
+<?php
+
+/**
+ * OrganizationalUnitNames
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * OrganizationalUnitNames
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class OrganizationalUnitNames
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'min' => 1,
+        'max' => 4, // ub-organizational-units
+        'children' => ['type' => ASN1::TYPE_PRINTABLE_STRING]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/OtherPrimeInfo.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/OtherPrimeInfo.php
new file mode 100644
index 0000000..5d56560
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/OtherPrimeInfo.php
@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * OtherPrimeInfo
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * OtherPrimeInfo
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class OtherPrimeInfo
+{
+    // version must be multi if otherPrimeInfos present
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'prime' => ['type' => ASN1::TYPE_INTEGER],      // ri
+            'exponent' => ['type' => ASN1::TYPE_INTEGER],   // di
+            'coefficient' => ['type' => ASN1::TYPE_INTEGER] // ti
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/OtherPrimeInfos.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/OtherPrimeInfos.php
new file mode 100644
index 0000000..9802a80
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/OtherPrimeInfos.php
@@ -0,0 +1,32 @@
+<?php
+
+/**
+ * OtherPrimeInfos
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * OtherPrimeInfos
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class OtherPrimeInfos
+{
+    // version must be multi if otherPrimeInfos present
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'min' => 1,
+        'max' => -1,
+        'children' => OtherPrimeInfo::MAP
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PBEParameter.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PBEParameter.php
new file mode 100644
index 0000000..8eb27cf
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PBEParameter.php
@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * PBEParameter
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * PBEParameter
+ *
+ * from https://tools.ietf.org/html/rfc2898#appendix-A.3
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class PBEParameter
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'salt' => ['type' => ASN1::TYPE_OCTET_STRING],
+            'iterationCount' => ['type' => ASN1::TYPE_INTEGER]
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PBES2params.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PBES2params.php
new file mode 100644
index 0000000..bd31699
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PBES2params.php
@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * PBES2params
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * PBES2params
+ *
+ * from https://tools.ietf.org/html/rfc2898#appendix-A.3
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class PBES2params
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'keyDerivationFunc' => AlgorithmIdentifier::MAP,
+            'encryptionScheme' => AlgorithmIdentifier::MAP
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PBKDF2params.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PBKDF2params.php
new file mode 100644
index 0000000..2dafed9
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PBKDF2params.php
@@ -0,0 +1,41 @@
+<?php
+
+/**
+ * PBKDF2params
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * PBKDF2params
+ *
+ * from https://tools.ietf.org/html/rfc2898#appendix-A.3
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class PBKDF2params
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            // technically, this is a CHOICE in RFC2898 but the other "choice" is, currently, more of a placeholder
+            // in the RFC
+            'salt' => ['type' => ASN1::TYPE_OCTET_STRING],
+            'iterationCount' => ['type' => ASN1::TYPE_INTEGER],
+            'keyLength' => [
+                'type' => ASN1::TYPE_INTEGER,
+                'optional' => true
+            ],
+            'prf' => AlgorithmIdentifier::MAP + ['optional' => true]
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PBMAC1params.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PBMAC1params.php
new file mode 100644
index 0000000..91319f5
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PBMAC1params.php
@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * PBMAC1params
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * PBMAC1params
+ *
+ * from https://tools.ietf.org/html/rfc2898#appendix-A.3
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class PBMAC1params
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'keyDerivationFunc' => AlgorithmIdentifier::MAP,
+            'messageAuthScheme' => AlgorithmIdentifier::MAP
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PKCS9String.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PKCS9String.php
new file mode 100644
index 0000000..87d0862
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PKCS9String.php
@@ -0,0 +1,32 @@
+<?php
+
+/**
+ * PKCS9String
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * PKCS9String
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class PKCS9String
+{
+    const MAP = [
+        'type' => ASN1::TYPE_CHOICE,
+        'children' => [
+            'ia5String' => ['type' => ASN1::TYPE_IA5_STRING],
+            'directoryString' => DirectoryString::MAP
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/Pentanomial.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/Pentanomial.php
new file mode 100644
index 0000000..b8c8c02
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/Pentanomial.php
@@ -0,0 +1,33 @@
+<?php
+
+/**
+ * Pentanomial
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * Pentanomial
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class Pentanomial
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'k1' => ['type' => ASN1::TYPE_INTEGER], // k1 > 0
+            'k2' => ['type' => ASN1::TYPE_INTEGER], // k2 > k1
+            'k3' => ['type' => ASN1::TYPE_INTEGER], // k3 > h2
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PersonalName.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PersonalName.php
new file mode 100644
index 0000000..14e2860
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PersonalName.php
@@ -0,0 +1,54 @@
+<?php
+
+/**
+ * PersonalName
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * PersonalName
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class PersonalName
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SET,
+        'children' => [
+            'surname' => [
+                'type' => ASN1::TYPE_PRINTABLE_STRING,
+                'constant' => 0,
+                'optional' => true,
+                'implicit' => true
+            ],
+            'given-name' => [
+                'type' => ASN1::TYPE_PRINTABLE_STRING,
+                'constant' => 1,
+                'optional' => true,
+                'implicit' => true
+            ],
+            'initials' => [
+                'type' => ASN1::TYPE_PRINTABLE_STRING,
+                'constant' => 2,
+                'optional' => true,
+                'implicit' => true
+            ],
+            'generation-qualifier' => [
+                'type' => ASN1::TYPE_PRINTABLE_STRING,
+                'constant' => 3,
+                'optional' => true,
+                'implicit' => true
+            ]
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PolicyInformation.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PolicyInformation.php
new file mode 100644
index 0000000..1625d19
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PolicyInformation.php
@@ -0,0 +1,38 @@
+<?php
+
+/**
+ * PolicyInformation
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * PolicyInformation
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class PolicyInformation
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'policyIdentifier' => CertPolicyId::MAP,
+            'policyQualifiers' => [
+                'type' => ASN1::TYPE_SEQUENCE,
+                'min' => 0,
+                'max' => -1,
+                'optional' => true,
+                'children' => PolicyQualifierInfo::MAP
+            ]
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PolicyMappings.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PolicyMappings.php
new file mode 100644
index 0000000..d30b852
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PolicyMappings.php
@@ -0,0 +1,37 @@
+<?php
+
+/**
+ * PolicyMappings
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * PolicyMappings
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class PolicyMappings
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'min' => 1,
+        'max' => -1,
+        'children' => [
+            'type' => ASN1::TYPE_SEQUENCE,
+            'children' => [
+                'issuerDomainPolicy' => CertPolicyId::MAP,
+                'subjectDomainPolicy' => CertPolicyId::MAP
+            ]
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PolicyQualifierId.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PolicyQualifierId.php
new file mode 100644
index 0000000..7b7cd6a
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PolicyQualifierId.php
@@ -0,0 +1,26 @@
+<?php
+
+/**
+ * PolicyQualifierId
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * PolicyQualifierId
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class PolicyQualifierId
+{
+    const MAP = ['type' => ASN1::TYPE_OBJECT_IDENTIFIER];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PolicyQualifierInfo.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PolicyQualifierInfo.php
new file mode 100644
index 0000000..d227702
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PolicyQualifierInfo.php
@@ -0,0 +1,32 @@
+<?php
+
+/**
+ * PolicyQualifierInfo
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * PolicyQualifierInfo
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class PolicyQualifierInfo
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'policyQualifierId' => PolicyQualifierId::MAP,
+            'qualifier' => ['type' => ASN1::TYPE_ANY]
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PostalAddress.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PostalAddress.php
new file mode 100644
index 0000000..142b309
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PostalAddress.php
@@ -0,0 +1,32 @@
+<?php
+
+/**
+ * PostalAddress
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * PostalAddress
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class PostalAddress
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'optional' => true,
+        'min' => 1,
+        'max' => -1,
+        'children' => DirectoryString::MAP
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/Prime_p.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/Prime_p.php
new file mode 100644
index 0000000..7743034
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/Prime_p.php
@@ -0,0 +1,26 @@
+<?php
+
+/**
+ * Prime_p
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * Prime_p
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class Prime_p
+{
+    const MAP = ['type' => ASN1::TYPE_INTEGER];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PrivateDomainName.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PrivateDomainName.php
new file mode 100644
index 0000000..195dcaa
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PrivateDomainName.php
@@ -0,0 +1,32 @@
+<?php
+
+/**
+ * PrivateDomainName
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * PrivateDomainName
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class PrivateDomainName
+{
+    const MAP = [
+        'type' => ASN1::TYPE_CHOICE,
+        'children' => [
+            'numeric' => ['type' => ASN1::TYPE_NUMERIC_STRING],
+            'printable' => ['type' => ASN1::TYPE_PRINTABLE_STRING]
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PrivateKey.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PrivateKey.php
new file mode 100644
index 0000000..3c89594
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PrivateKey.php
@@ -0,0 +1,26 @@
+<?php
+
+/**
+ * PrivateKey
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * PrivateKey
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class PrivateKey
+{
+    const MAP = ['type' => ASN1::TYPE_OCTET_STRING];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PrivateKeyInfo.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PrivateKeyInfo.php
new file mode 100644
index 0000000..b440b78
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PrivateKeyInfo.php
@@ -0,0 +1,41 @@
+<?php
+
+/**
+ * PrivateKeyInfo
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * PrivateKeyInfo
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class PrivateKeyInfo
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'version' => [
+                'type' => ASN1::TYPE_INTEGER,
+                'mapping' => ['v1']
+            ],
+            'privateKeyAlgorithm' => AlgorithmIdentifier::MAP,
+            'privateKey' => PrivateKey::MAP,
+            'attributes' => [
+                'constant' => 0,
+                'optional' => true,
+                'implicit' => true
+            ] + Attributes::MAP
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PrivateKeyUsagePeriod.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PrivateKeyUsagePeriod.php
new file mode 100644
index 0000000..5b87036
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PrivateKeyUsagePeriod.php
@@ -0,0 +1,40 @@
+<?php
+
+/**
+ * PrivateKeyUsagePeriod
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * PrivateKeyUsagePeriod
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class PrivateKeyUsagePeriod
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'notBefore' => [
+                'constant' => 0,
+                'optional' => true,
+                'implicit' => true,
+                'type' => ASN1::TYPE_GENERALIZED_TIME],
+            'notAfter' => [
+                'constant' => 1,
+                'optional' => true,
+                'implicit' => true,
+                'type' => ASN1::TYPE_GENERALIZED_TIME]
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PublicKey.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PublicKey.php
new file mode 100644
index 0000000..4840920
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PublicKey.php
@@ -0,0 +1,26 @@
+<?php
+
+/**
+ * PublicKey
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * PublicKey
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class PublicKey
+{
+    const MAP = ['type' => ASN1::TYPE_BIT_STRING];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PublicKeyAndChallenge.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PublicKeyAndChallenge.php
new file mode 100644
index 0000000..432581e
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PublicKeyAndChallenge.php
@@ -0,0 +1,32 @@
+<?php
+
+/**
+ * PublicKeyAndChallenge
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * PublicKeyAndChallenge
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class PublicKeyAndChallenge
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'spki' => SubjectPublicKeyInfo::MAP,
+            'challenge' => ['type' => ASN1::TYPE_IA5_STRING]
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PublicKeyInfo.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PublicKeyInfo.php
new file mode 100644
index 0000000..b39a341
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/PublicKeyInfo.php
@@ -0,0 +1,35 @@
+<?php
+
+/**
+ * PublicKeyInfo
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * PublicKeyInfo
+ *
+ * this format is not formally defined anywhere but is none-the-less the form you
+ * get when you do "openssl rsa -in private.pem -outform PEM -pubout"
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class PublicKeyInfo
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'publicKeyAlgorithm' => AlgorithmIdentifier::MAP,
+            'publicKey' => ['type' => ASN1::TYPE_BIT_STRING]
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/RC2CBCParameter.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/RC2CBCParameter.php
new file mode 100644
index 0000000..48649ab
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/RC2CBCParameter.php
@@ -0,0 +1,37 @@
+<?php
+
+/**
+ * RC2CBCParameter
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * RC2CBCParameter
+ *
+ * from https://tools.ietf.org/html/rfc2898#appendix-A.3
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class RC2CBCParameter
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'rc2ParametersVersion' => [
+                'type' => ASN1::TYPE_INTEGER,
+                'optional' => true
+            ],
+            'iv' => ['type' => ASN1::TYPE_OCTET_STRING]
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/RDNSequence.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/RDNSequence.php
new file mode 100644
index 0000000..04b071c
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/RDNSequence.php
@@ -0,0 +1,38 @@
+<?php
+
+/**
+ * RDNSequence
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * RDNSequence
+ *
+ * In practice, RDNs containing multiple name-value pairs (called "multivalued RDNs") are rare,
+ * but they can be useful at times when either there is no unique attribute in the entry or you
+ * want to ensure that the entry's DN contains some useful identifying information.
+ *
+ * - https://www.opends.org/wiki/page/DefinitionRelativeDistinguishedName
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class RDNSequence
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        // RDNSequence does not define a min or a max, which means it doesn't have one
+        'min' => 0,
+        'max' => -1,
+        'children' => RelativeDistinguishedName::MAP
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/RSAPrivateKey.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/RSAPrivateKey.php
new file mode 100644
index 0000000..8c19c65
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/RSAPrivateKey.php
@@ -0,0 +1,44 @@
+<?php
+
+/**
+ * RSAPrivateKey
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * RSAPrivateKey
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class RSAPrivateKey
+{
+    // version must be multi if otherPrimeInfos present
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'version' => [
+                'type' => ASN1::TYPE_INTEGER,
+                'mapping' => ['two-prime', 'multi']
+            ],
+            'modulus' => ['type' => ASN1::TYPE_INTEGER],         // n
+            'publicExponent' => ['type' => ASN1::TYPE_INTEGER],  // e
+            'privateExponent' => ['type' => ASN1::TYPE_INTEGER], // d
+            'prime1' => ['type' => ASN1::TYPE_INTEGER],          // p
+            'prime2' => ['type' => ASN1::TYPE_INTEGER],          // q
+            'exponent1' => ['type' => ASN1::TYPE_INTEGER],       // d mod (p-1)
+            'exponent2' => ['type' => ASN1::TYPE_INTEGER],       // d mod (q-1)
+            'coefficient' => ['type' => ASN1::TYPE_INTEGER],     // (inverse of q) mod p
+            'otherPrimeInfos' => OtherPrimeInfos::MAP + ['optional' => true]
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/RSAPublicKey.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/RSAPublicKey.php
new file mode 100644
index 0000000..b14c32c
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/RSAPublicKey.php
@@ -0,0 +1,32 @@
+<?php
+
+/**
+ * RSAPublicKey
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * RSAPublicKey
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class RSAPublicKey
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'modulus' => ['type' => ASN1::TYPE_INTEGER],
+            'publicExponent' => ['type' => ASN1::TYPE_INTEGER]
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/RSASSA_PSS_params.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/RSASSA_PSS_params.php
new file mode 100644
index 0000000..1a784bf
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/RSASSA_PSS_params.php
@@ -0,0 +1,58 @@
+<?php
+
+/**
+ * RSASSA_PSS_params
+ *
+ * As defined in https://tools.ietf.org/html/rfc4055#section-3.1
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * RSASSA_PSS_params
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class RSASSA_PSS_params
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'hashAlgorithm' => [
+                'constant' => 0,
+                'optional' => true,
+                'explicit' => true,
+                //'default'  => 'sha1Identifier'
+            ] + HashAlgorithm::MAP,
+            'maskGenAlgorithm' => [
+                'constant' => 1,
+                'optional' => true,
+                'explicit' => true,
+                //'default'  => 'mgf1SHA1Identifier'
+            ] + MaskGenAlgorithm::MAP,
+            'saltLength' => [
+                'type' => ASN1::TYPE_INTEGER,
+                'constant' => 2,
+                'optional' => true,
+                'explicit' => true,
+                'default' => 20
+            ],
+            'trailerField' => [
+                'type' => ASN1::TYPE_INTEGER,
+                'constant' => 3,
+                'optional' => true,
+                'explicit' => true,
+                'default' => 1
+            ]
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/ReasonFlags.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/ReasonFlags.php
new file mode 100644
index 0000000..2e62fcd
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/ReasonFlags.php
@@ -0,0 +1,39 @@
+<?php
+
+/**
+ * ReasonFlags
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * ReasonFlags
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class ReasonFlags
+{
+    const MAP = [
+        'type' => ASN1::TYPE_BIT_STRING,
+        'mapping' => [
+            'unused',
+            'keyCompromise',
+            'cACompromise',
+            'affiliationChanged',
+            'superseded',
+            'cessationOfOperation',
+            'certificateHold',
+            'privilegeWithdrawn',
+            'aACompromise'
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/RelativeDistinguishedName.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/RelativeDistinguishedName.php
new file mode 100644
index 0000000..a0421f7
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/RelativeDistinguishedName.php
@@ -0,0 +1,37 @@
+<?php
+
+/**
+ * RelativeDistinguishedName
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * RelativeDistinguishedName
+ *
+ * In practice, RDNs containing multiple name-value pairs (called "multivalued RDNs") are rare,
+ * but they can be useful at times when either there is no unique attribute in the entry or you
+ * want to ensure that the entry's DN contains some useful identifying information.
+ *
+ * - https://www.opends.org/wiki/page/DefinitionRelativeDistinguishedName
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class RelativeDistinguishedName
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SET,
+        'min' => 1,
+        'max' => -1,
+        'children' => AttributeTypeAndValue::MAP
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/RevokedCertificate.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/RevokedCertificate.php
new file mode 100644
index 0000000..ff759eb
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/RevokedCertificate.php
@@ -0,0 +1,35 @@
+<?php
+
+/**
+ * RevokedCertificate
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * RevokedCertificate
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class RevokedCertificate
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'userCertificate' => CertificateSerialNumber::MAP,
+            'revocationDate' => Time::MAP,
+            'crlEntryExtensions' => [
+                'optional' => true
+            ] + Extensions::MAP
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/SignedPublicKeyAndChallenge.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/SignedPublicKeyAndChallenge.php
new file mode 100644
index 0000000..0f482a2
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/SignedPublicKeyAndChallenge.php
@@ -0,0 +1,33 @@
+<?php
+
+/**
+ * SignedPublicKeyAndChallenge
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * SignedPublicKeyAndChallenge
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class SignedPublicKeyAndChallenge
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'publicKeyAndChallenge' => PublicKeyAndChallenge::MAP,
+            'signatureAlgorithm' => AlgorithmIdentifier::MAP,
+            'signature' => ['type' => ASN1::TYPE_BIT_STRING]
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/SpecifiedECDomain.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/SpecifiedECDomain.php
new file mode 100644
index 0000000..7408a56
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/SpecifiedECDomain.php
@@ -0,0 +1,45 @@
+<?php
+
+/**
+ * SpecifiedECDomain
+ *
+ * From: http://www.secg.org/sec1-v2.pdf#page=109
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * SpecifiedECDomain
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class SpecifiedECDomain
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'version' => [
+                'type' => ASN1::TYPE_INTEGER,
+                'mapping' => [1 => 'ecdpVer1', 'ecdpVer2', 'ecdpVer3']
+            ],
+            'fieldID' => FieldID::MAP,
+            'curve' => Curve::MAP,
+            'base' => ECPoint::MAP,
+            'order' => ['type' => ASN1::TYPE_INTEGER],
+            'cofactor' => [
+                'type' => ASN1::TYPE_INTEGER,
+                'optional' => true
+            ],
+            'hash' => ['optional' => true] + HashAlgorithm::MAP
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/SubjectAltName.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/SubjectAltName.php
new file mode 100644
index 0000000..39138a9
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/SubjectAltName.php
@@ -0,0 +1,24 @@
+<?php
+
+/**
+ * SubjectAltName
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+/**
+ * SubjectAltName
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class SubjectAltName
+{
+    const MAP = GeneralNames::MAP;
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/SubjectDirectoryAttributes.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/SubjectDirectoryAttributes.php
new file mode 100644
index 0000000..f2e206f
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/SubjectDirectoryAttributes.php
@@ -0,0 +1,31 @@
+<?php
+
+/**
+ * SubjectDirectoryAttributes
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * SubjectDirectoryAttributes
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class SubjectDirectoryAttributes
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'min' => 1,
+        'max' => -1,
+        'children' => Attribute::MAP
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/SubjectInfoAccessSyntax.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/SubjectInfoAccessSyntax.php
new file mode 100644
index 0000000..1ff241f
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/SubjectInfoAccessSyntax.php
@@ -0,0 +1,31 @@
+<?php
+
+/**
+ * SubjectInfoAccessSyntax
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * SubjectInfoAccessSyntax
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class SubjectInfoAccessSyntax
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'min' => 1,
+        'max' => -1,
+        'children' => AccessDescription::MAP
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/SubjectPublicKeyInfo.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/SubjectPublicKeyInfo.php
new file mode 100644
index 0000000..0d53d54
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/SubjectPublicKeyInfo.php
@@ -0,0 +1,32 @@
+<?php
+
+/**
+ * SubjectPublicKeyInfo
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * SubjectPublicKeyInfo
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class SubjectPublicKeyInfo
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'algorithm' => AlgorithmIdentifier::MAP,
+            'subjectPublicKey' => ['type' => ASN1::TYPE_BIT_STRING]
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/TBSCertList.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/TBSCertList.php
new file mode 100644
index 0000000..49b3cfc
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/TBSCertList.php
@@ -0,0 +1,54 @@
+<?php
+
+/**
+ * TBSCertList
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * TBSCertList
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class TBSCertList
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'version' => [
+                'type' => ASN1::TYPE_INTEGER,
+                'mapping' => ['v1', 'v2', 'v3'],
+                'optional' => true,
+                'default' => 'v2'
+            ],
+            'signature' => AlgorithmIdentifier::MAP,
+            'issuer' => Name::MAP,
+            'thisUpdate' => Time::MAP,
+            'nextUpdate' => [
+                'optional' => true
+            ] + Time::MAP,
+            'revokedCertificates' => [
+                'type' => ASN1::TYPE_SEQUENCE,
+                'optional' => true,
+                'min' => 0,
+                'max' => -1,
+                'children' => RevokedCertificate::MAP
+            ],
+            'crlExtensions' => [
+                'constant' => 0,
+                'optional' => true,
+                'explicit' => true
+            ] + Extensions::MAP
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/TBSCertificate.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/TBSCertificate.php
new file mode 100644
index 0000000..007360c
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/TBSCertificate.php
@@ -0,0 +1,65 @@
+<?php
+
+/**
+ * TBSCertificate
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * TBSCertificate
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class TBSCertificate
+{
+    // assert($TBSCertificate['children']['signature'] == $Certificate['children']['signatureAlgorithm'])
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            // technically, default implies optional, but we'll define it as being optional, none-the-less, just to
+            // reenforce that fact
+            'version' => [
+                'type' => ASN1::TYPE_INTEGER,
+                'constant' => 0,
+                'optional' => true,
+                'explicit' => true,
+                'mapping' => ['v1', 'v2', 'v3'],
+                'default' => 'v1'
+            ],
+            'serialNumber' => CertificateSerialNumber::MAP,
+            'signature' => AlgorithmIdentifier::MAP,
+            'issuer' => Name::MAP,
+            'validity' => Validity::MAP,
+            'subject' => Name::MAP,
+            'subjectPublicKeyInfo' => SubjectPublicKeyInfo::MAP,
+            // implicit means that the T in the TLV structure is to be rewritten, regardless of the type
+            'issuerUniqueID' => [
+                'constant' => 1,
+                'optional' => true,
+                'implicit' => true
+            ] + UniqueIdentifier::MAP,
+            'subjectUniqueID' => [
+                'constant' => 2,
+                'optional' => true,
+                'implicit' => true
+            ] + UniqueIdentifier::MAP,
+            // <http://tools.ietf.org/html/rfc2459#page-74> doesn't use the EXPLICIT keyword but if
+            // it's not IMPLICIT, it's EXPLICIT
+            'extensions' => [
+                'constant' => 3,
+                'optional' => true,
+                'explicit' => true
+            ] + Extensions::MAP
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/TerminalIdentifier.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/TerminalIdentifier.php
new file mode 100644
index 0000000..7f6d9d2
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/TerminalIdentifier.php
@@ -0,0 +1,26 @@
+<?php
+
+/**
+ * TerminalIdentifier
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * TerminalIdentifier
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class TerminalIdentifier
+{
+    const MAP = ['type' => ASN1::TYPE_PRINTABLE_STRING];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/Time.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/Time.php
new file mode 100644
index 0000000..744ee70
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/Time.php
@@ -0,0 +1,32 @@
+<?php
+
+/**
+ * Time
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * Time
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class Time
+{
+    const MAP = [
+        'type' => ASN1::TYPE_CHOICE,
+        'children' => [
+            'utcTime' => ['type' => ASN1::TYPE_UTC_TIME],
+            'generalTime' => ['type' => ASN1::TYPE_GENERALIZED_TIME]
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/Trinomial.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/Trinomial.php
new file mode 100644
index 0000000..33baa91
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/Trinomial.php
@@ -0,0 +1,26 @@
+<?php
+
+/**
+ * Trinomial
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * Trinomial
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class Trinomial
+{
+    const MAP = ['type' => ASN1::TYPE_INTEGER];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/UniqueIdentifier.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/UniqueIdentifier.php
new file mode 100644
index 0000000..f4c954b
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/UniqueIdentifier.php
@@ -0,0 +1,26 @@
+<?php
+
+/**
+ * UniqueIdentifier
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * UniqueIdentifier
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class UniqueIdentifier
+{
+    const MAP = ['type' => ASN1::TYPE_BIT_STRING];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/UserNotice.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/UserNotice.php
new file mode 100644
index 0000000..98d527b
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/UserNotice.php
@@ -0,0 +1,38 @@
+<?php
+
+/**
+ * UserNotice
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * UserNotice
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class UserNotice
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'noticeRef' => [
+                'optional' => true,
+                'implicit' => true
+            ] + NoticeReference::MAP,
+            'explicitText' => [
+                'optional' => true,
+                'implicit' => true
+            ] + DisplayText::MAP
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/Validity.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/Validity.php
new file mode 100644
index 0000000..8ef64cf
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/Validity.php
@@ -0,0 +1,32 @@
+<?php
+
+/**
+ * Validity
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * Validity
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class Validity
+{
+    const MAP = [
+        'type' => ASN1::TYPE_SEQUENCE,
+        'children' => [
+            'notBefore' => Time::MAP,
+            'notAfter' => Time::MAP
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/netscape_ca_policy_url.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/netscape_ca_policy_url.php
new file mode 100644
index 0000000..2ab1572
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/netscape_ca_policy_url.php
@@ -0,0 +1,26 @@
+<?php
+
+/**
+ * netscape_ca_policy_url
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * netscape_ca_policy_url
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class netscape_ca_policy_url
+{
+    const MAP = ['type' => ASN1::TYPE_IA5_STRING];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/netscape_cert_type.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/netscape_cert_type.php
new file mode 100644
index 0000000..49e8da4
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/netscape_cert_type.php
@@ -0,0 +1,40 @@
+<?php
+
+/**
+ * netscape_cert_type
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * netscape_cert_type
+ *
+ * mapping is from <http://www.mozilla.org/projects/security/pki/nss/tech-notes/tn3.html>
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class netscape_cert_type
+{
+    const MAP = [
+        'type' => ASN1::TYPE_BIT_STRING,
+        'mapping' => [
+            'SSLClient',
+            'SSLServer',
+            'Email',
+            'ObjectSigning',
+            'Reserved',
+            'SSLCA',
+            'EmailCA',
+            'ObjectSigningCA'
+        ]
+    ];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/netscape_comment.php b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/netscape_comment.php
new file mode 100644
index 0000000..d3ff4dd
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/ASN1/Maps/netscape_comment.php
@@ -0,0 +1,26 @@
+<?php
+
+/**
+ * netscape_comment
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File\ASN1\Maps;
+
+use phpseclib3\File\ASN1;
+
+/**
+ * netscape_comment
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class netscape_comment
+{
+    const MAP = ['type' => ASN1::TYPE_IA5_STRING];
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/File/X509.php b/vendor/phpseclib/phpseclib/phpseclib/File/X509.php
new file mode 100644
index 0000000..5e2f073
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/File/X509.php
@@ -0,0 +1,4006 @@
+<?php
+
+/**
+ * Pure-PHP X.509 Parser
+ *
+ * PHP version 5
+ *
+ * Encode and decode X.509 certificates.
+ *
+ * The extensions are from {@link http://tools.ietf.org/html/rfc5280 RFC5280} and
+ * {@link http://web.archive.org/web/19961027104704/http://www3.netscape.com/eng/security/cert-exts.html Netscape Certificate Extensions}.
+ *
+ * Note that loading an X.509 certificate and resaving it may invalidate the signature.  The reason being that the signature is based on a
+ * portion of the certificate that contains optional parameters with default values.  ie. if the parameter isn't there the default value is
+ * used.  Problem is, if the parameter is there and it just so happens to have the default value there are two ways that that parameter can
+ * be encoded.  It can be encoded explicitly or left out all together.  This would effect the signature value and thus may invalidate the
+ * the certificate all together unless the certificate is re-signed.
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2012 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\File;
+
+use phpseclib3\Common\Functions\Strings;
+use phpseclib3\Crypt\Common\PrivateKey;
+use phpseclib3\Crypt\Common\PublicKey;
+use phpseclib3\Crypt\DSA;
+use phpseclib3\Crypt\EC;
+use phpseclib3\Crypt\Hash;
+use phpseclib3\Crypt\PublicKeyLoader;
+use phpseclib3\Crypt\Random;
+use phpseclib3\Crypt\RSA;
+use phpseclib3\Crypt\RSA\Formats\Keys\PSS;
+use phpseclib3\Exception\UnsupportedAlgorithmException;
+use phpseclib3\File\ASN1\Element;
+use phpseclib3\File\ASN1\Maps;
+use phpseclib3\Math\BigInteger;
+
+/**
+ * Pure-PHP X.509 Parser
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+class X509
+{
+    /**
+     * Flag to only accept signatures signed by certificate authorities
+     *
+     * Not really used anymore but retained all the same to suppress E_NOTICEs from old installs
+     *
+     */
+    const VALIDATE_SIGNATURE_BY_CA = 1;
+
+    /**
+     * Return internal array representation
+     *
+     * @see \phpseclib3\File\X509::getDN()
+     */
+    const DN_ARRAY = 0;
+    /**
+     * Return string
+     *
+     * @see \phpseclib3\File\X509::getDN()
+     */
+    const DN_STRING = 1;
+    /**
+     * Return ASN.1 name string
+     *
+     * @see \phpseclib3\File\X509::getDN()
+     */
+    const DN_ASN1 = 2;
+    /**
+     * Return OpenSSL compatible array
+     *
+     * @see \phpseclib3\File\X509::getDN()
+     */
+    const DN_OPENSSL = 3;
+    /**
+     * Return canonical ASN.1 RDNs string
+     *
+     * @see \phpseclib3\File\X509::getDN()
+     */
+    const DN_CANON = 4;
+    /**
+     * Return name hash for file indexing
+     *
+     * @see \phpseclib3\File\X509::getDN()
+     */
+    const DN_HASH = 5;
+
+    /**
+     * Save as PEM
+     *
+     * ie. a base64-encoded PEM with a header and a footer
+     *
+     * @see \phpseclib3\File\X509::saveX509()
+     * @see \phpseclib3\File\X509::saveCSR()
+     * @see \phpseclib3\File\X509::saveCRL()
+     */
+    const FORMAT_PEM = 0;
+    /**
+     * Save as DER
+     *
+     * @see \phpseclib3\File\X509::saveX509()
+     * @see \phpseclib3\File\X509::saveCSR()
+     * @see \phpseclib3\File\X509::saveCRL()
+     */
+    const FORMAT_DER = 1;
+    /**
+     * Save as a SPKAC
+     *
+     * @see \phpseclib3\File\X509::saveX509()
+     * @see \phpseclib3\File\X509::saveCSR()
+     * @see \phpseclib3\File\X509::saveCRL()
+     *
+     * Only works on CSRs. Not currently supported.
+     */
+    const FORMAT_SPKAC = 2;
+    /**
+     * Auto-detect the format
+     *
+     * Used only by the load*() functions
+     *
+     * @see \phpseclib3\File\X509::saveX509()
+     * @see \phpseclib3\File\X509::saveCSR()
+     * @see \phpseclib3\File\X509::saveCRL()
+     */
+    const FORMAT_AUTO_DETECT = 3;
+
+    /**
+     * Attribute value disposition.
+     * If disposition is >= 0, this is the index of the target value.
+     */
+    const ATTR_ALL = -1; // All attribute values (array).
+    const ATTR_APPEND = -2; // Add a value.
+    const ATTR_REPLACE = -3; // Clear first, then add a value.
+
+    /**
+     * Distinguished Name
+     *
+     * @var array
+     */
+    private $dn;
+
+    /**
+     * Public key
+     *
+     * @var string|PublicKey
+     */
+    private $publicKey;
+
+    /**
+     * Private key
+     *
+     * @var string|PrivateKey
+     */
+    private $privateKey;
+
+    /**
+     * The certificate authorities
+     *
+     * @var array
+     */
+    private $CAs = [];
+
+    /**
+     * The currently loaded certificate
+     *
+     * @var array
+     */
+    private $currentCert;
+
+    /**
+     * The signature subject
+     *
+     * There's no guarantee \phpseclib3\File\X509 is going to re-encode an X.509 cert in the same way it was originally
+     * encoded so we take save the portion of the original cert that the signature would have made for.
+     *
+     * @var string
+     */
+    private $signatureSubject;
+
+    /**
+     * Certificate Start Date
+     *
+     * @var string
+     */
+    private $startDate;
+
+    /**
+     * Certificate End Date
+     *
+     * @var string|Element
+     */
+    private $endDate;
+
+    /**
+     * Serial Number
+     *
+     * @var string
+     */
+    private $serialNumber;
+
+    /**
+     * Key Identifier
+     *
+     * See {@link http://tools.ietf.org/html/rfc5280#section-4.2.1.1 RFC5280#section-4.2.1.1} and
+     * {@link http://tools.ietf.org/html/rfc5280#section-4.2.1.2 RFC5280#section-4.2.1.2}.
+     *
+     * @var string
+     */
+    private $currentKeyIdentifier;
+
+    /**
+     * CA Flag
+     *
+     * @var bool
+     */
+    private $caFlag = false;
+
+    /**
+     * SPKAC Challenge
+     *
+     * @var string
+     */
+    private $challenge;
+
+    /**
+     * @var array
+     */
+    private $extensionValues = [];
+
+    /**
+     * OIDs loaded
+     *
+     * @var bool
+     */
+    private static $oidsLoaded = false;
+
+    /**
+     * Recursion Limit
+     *
+     * @var int
+     */
+    private static $recur_limit = 5;
+
+    /**
+     * URL fetch flag
+     *
+     * @var bool
+     */
+    private static $disable_url_fetch = false;
+
+    /**
+     * @var array
+     */
+    private static $extensions = [];
+
+    /**
+     * @var ?array
+     */
+    private $ipAddresses = null;
+
+    /**
+     * @var ?array
+     */
+    private $domains = null;
+
+    /**
+     * Default Constructor.
+     *
+     * @return \phpseclib3\File\X509
+     */
+    public function __construct()
+    {
+        // Explicitly Tagged Module, 1988 Syntax
+        // http://tools.ietf.org/html/rfc5280#appendix-A.1
+
+        if (!self::$oidsLoaded) {
+            // OIDs from RFC5280 and those RFCs mentioned in RFC5280#section-4.1.1.2
+            ASN1::loadOIDs([
+                //'id-pkix' => '1.3.6.1.5.5.7',
+                //'id-pe' => '1.3.6.1.5.5.7.1',
+                //'id-qt' => '1.3.6.1.5.5.7.2',
+                //'id-kp' => '1.3.6.1.5.5.7.3',
+                //'id-ad' => '1.3.6.1.5.5.7.48',
+                'id-qt-cps' => '1.3.6.1.5.5.7.2.1',
+                'id-qt-unotice' => '1.3.6.1.5.5.7.2.2',
+                'id-ad-ocsp' => '1.3.6.1.5.5.7.48.1',
+                'id-ad-caIssuers' => '1.3.6.1.5.5.7.48.2',
+                'id-ad-timeStamping' => '1.3.6.1.5.5.7.48.3',
+                'id-ad-caRepository' => '1.3.6.1.5.5.7.48.5',
+                //'id-at' => '2.5.4',
+                'id-at-name' => '2.5.4.41',
+                'id-at-surname' => '2.5.4.4',
+                'id-at-givenName' => '2.5.4.42',
+                'id-at-initials' => '2.5.4.43',
+                'id-at-generationQualifier' => '2.5.4.44',
+                'id-at-commonName' => '2.5.4.3',
+                'id-at-localityName' => '2.5.4.7',
+                'id-at-stateOrProvinceName' => '2.5.4.8',
+                'id-at-organizationName' => '2.5.4.10',
+                'id-at-organizationalUnitName' => '2.5.4.11',
+                'id-at-title' => '2.5.4.12',
+                'id-at-description' => '2.5.4.13',
+                'id-at-dnQualifier' => '2.5.4.46',
+                'id-at-countryName' => '2.5.4.6',
+                'id-at-serialNumber' => '2.5.4.5',
+                'id-at-pseudonym' => '2.5.4.65',
+                'id-at-postalCode' => '2.5.4.17',
+                'id-at-streetAddress' => '2.5.4.9',
+                'id-at-uniqueIdentifier' => '2.5.4.45',
+                'id-at-role' => '2.5.4.72',
+                'id-at-postalAddress' => '2.5.4.16',
+                'jurisdictionOfIncorporationCountryName' => '1.3.6.1.4.1.311.60.2.1.3',
+                'jurisdictionOfIncorporationStateOrProvinceName' => '1.3.6.1.4.1.311.60.2.1.2',
+                'jurisdictionLocalityName' => '1.3.6.1.4.1.311.60.2.1.1',
+                'id-at-businessCategory' => '2.5.4.15',
+
+                //'id-domainComponent' => '0.9.2342.19200300.100.1.25',
+                //'pkcs-9' => '1.2.840.113549.1.9',
+                'pkcs-9-at-emailAddress' => '1.2.840.113549.1.9.1',
+                //'id-ce' => '2.5.29',
+                'id-ce-authorityKeyIdentifier' => '2.5.29.35',
+                'id-ce-subjectKeyIdentifier' => '2.5.29.14',
+                'id-ce-keyUsage' => '2.5.29.15',
+                'id-ce-privateKeyUsagePeriod' => '2.5.29.16',
+                'id-ce-certificatePolicies' => '2.5.29.32',
+                //'anyPolicy' => '2.5.29.32.0',
+
+                'id-ce-policyMappings' => '2.5.29.33',
+
+                'id-ce-subjectAltName' => '2.5.29.17',
+                'id-ce-issuerAltName' => '2.5.29.18',
+                'id-ce-subjectDirectoryAttributes' => '2.5.29.9',
+                'id-ce-basicConstraints' => '2.5.29.19',
+                'id-ce-nameConstraints' => '2.5.29.30',
+                'id-ce-policyConstraints' => '2.5.29.36',
+                'id-ce-cRLDistributionPoints' => '2.5.29.31',
+                'id-ce-extKeyUsage' => '2.5.29.37',
+                //'anyExtendedKeyUsage' => '2.5.29.37.0',
+                'id-kp-serverAuth' => '1.3.6.1.5.5.7.3.1',
+                'id-kp-clientAuth' => '1.3.6.1.5.5.7.3.2',
+                'id-kp-codeSigning' => '1.3.6.1.5.5.7.3.3',
+                'id-kp-emailProtection' => '1.3.6.1.5.5.7.3.4',
+                'id-kp-timeStamping' => '1.3.6.1.5.5.7.3.8',
+                'id-kp-OCSPSigning' => '1.3.6.1.5.5.7.3.9',
+                'id-ce-inhibitAnyPolicy' => '2.5.29.54',
+                'id-ce-freshestCRL' => '2.5.29.46',
+                'id-pe-authorityInfoAccess' => '1.3.6.1.5.5.7.1.1',
+                'id-pe-subjectInfoAccess' => '1.3.6.1.5.5.7.1.11',
+                'id-ce-cRLNumber' => '2.5.29.20',
+                'id-ce-issuingDistributionPoint' => '2.5.29.28',
+                'id-ce-deltaCRLIndicator' => '2.5.29.27',
+                'id-ce-cRLReasons' => '2.5.29.21',
+                'id-ce-certificateIssuer' => '2.5.29.29',
+                'id-ce-holdInstructionCode' => '2.5.29.23',
+                //'holdInstruction' => '1.2.840.10040.2',
+                'id-holdinstruction-none' => '1.2.840.10040.2.1',
+                'id-holdinstruction-callissuer' => '1.2.840.10040.2.2',
+                'id-holdinstruction-reject' => '1.2.840.10040.2.3',
+                'id-ce-invalidityDate' => '2.5.29.24',
+
+                'rsaEncryption' => '1.2.840.113549.1.1.1',
+                'md2WithRSAEncryption' => '1.2.840.113549.1.1.2',
+                'md5WithRSAEncryption' => '1.2.840.113549.1.1.4',
+                'sha1WithRSAEncryption' => '1.2.840.113549.1.1.5',
+                'sha224WithRSAEncryption' => '1.2.840.113549.1.1.14',
+                'sha256WithRSAEncryption' => '1.2.840.113549.1.1.11',
+                'sha384WithRSAEncryption' => '1.2.840.113549.1.1.12',
+                'sha512WithRSAEncryption' => '1.2.840.113549.1.1.13',
+
+                'id-ecPublicKey' => '1.2.840.10045.2.1',
+                'ecdsa-with-SHA1' => '1.2.840.10045.4.1',
+                // from https://tools.ietf.org/html/rfc5758#section-3.2
+                'ecdsa-with-SHA224' => '1.2.840.10045.4.3.1',
+                'ecdsa-with-SHA256' => '1.2.840.10045.4.3.2',
+                'ecdsa-with-SHA384' => '1.2.840.10045.4.3.3',
+                'ecdsa-with-SHA512' => '1.2.840.10045.4.3.4',
+
+                'id-dsa' => '1.2.840.10040.4.1',
+                'id-dsa-with-sha1' => '1.2.840.10040.4.3',
+                // from https://tools.ietf.org/html/rfc5758#section-3.1
+                'id-dsa-with-sha224' => '2.16.840.1.101.3.4.3.1',
+                'id-dsa-with-sha256' => '2.16.840.1.101.3.4.3.2',
+
+                // from https://tools.ietf.org/html/rfc8410:
+                'id-Ed25519' => '1.3.101.112',
+                'id-Ed448' => '1.3.101.113',
+
+                'id-RSASSA-PSS' => '1.2.840.113549.1.1.10',
+
+                //'id-sha224' => '2.16.840.1.101.3.4.2.4',
+                //'id-sha256' => '2.16.840.1.101.3.4.2.1',
+                //'id-sha384' => '2.16.840.1.101.3.4.2.2',
+                //'id-sha512' => '2.16.840.1.101.3.4.2.3',
+                //'id-GostR3411-94-with-GostR3410-94' => '1.2.643.2.2.4',
+                //'id-GostR3411-94-with-GostR3410-2001' => '1.2.643.2.2.3',
+                //'id-GostR3410-2001' => '1.2.643.2.2.20',
+                //'id-GostR3410-94' => '1.2.643.2.2.19',
+                // Netscape Object Identifiers from "Netscape Certificate Extensions"
+                'netscape' => '2.16.840.1.113730',
+                'netscape-cert-extension' => '2.16.840.1.113730.1',
+                'netscape-cert-type' => '2.16.840.1.113730.1.1',
+                'netscape-comment' => '2.16.840.1.113730.1.13',
+                'netscape-ca-policy-url' => '2.16.840.1.113730.1.8',
+                // the following are X.509 extensions not supported by phpseclib
+                'id-pe-logotype' => '1.3.6.1.5.5.7.1.12',
+                'entrustVersInfo' => '1.2.840.113533.7.65.0',
+                'verisignPrivate' => '2.16.840.1.113733.1.6.9',
+                // for Certificate Signing Requests
+                // see http://tools.ietf.org/html/rfc2985
+                'pkcs-9-at-unstructuredName' => '1.2.840.113549.1.9.2', // PKCS #9 unstructured name
+                'pkcs-9-at-challengePassword' => '1.2.840.113549.1.9.7', // Challenge password for certificate revocations
+                'pkcs-9-at-extensionRequest' => '1.2.840.113549.1.9.14' // Certificate extension request
+            ]);
+        }
+    }
+
+    /**
+     * Load X.509 certificate
+     *
+     * Returns an associative array describing the X.509 cert or a false if the cert failed to load
+     *
+     * @param array|string $cert
+     * @param int $mode
+     * @return mixed
+     */
+    public function loadX509($cert, $mode = self::FORMAT_AUTO_DETECT)
+    {
+        if (is_array($cert) && isset($cert['tbsCertificate'])) {
+            unset($this->currentCert);
+            unset($this->currentKeyIdentifier);
+            $this->dn = $cert['tbsCertificate']['subject'];
+            if (!isset($this->dn)) {
+                return false;
+            }
+            $this->currentCert = $cert;
+
+            $currentKeyIdentifier = $this->getExtension('id-ce-subjectKeyIdentifier');
+            $this->currentKeyIdentifier = is_string($currentKeyIdentifier) ? $currentKeyIdentifier : null;
+
+            unset($this->signatureSubject);
+
+            return $cert;
+        }
+
+        if ($mode != self::FORMAT_DER) {
+            $newcert = ASN1::extractBER($cert);
+            if ($mode == self::FORMAT_PEM && $cert == $newcert) {
+                return false;
+            }
+            $cert = $newcert;
+        }
+
+        if ($cert === false) {
+            $this->currentCert = false;
+            return false;
+        }
+
+        $decoded = ASN1::decodeBER($cert);
+
+        if ($decoded) {
+            $x509 = ASN1::asn1map($decoded[0], Maps\Certificate::MAP);
+        }
+        if (!isset($x509) || $x509 === false) {
+            $this->currentCert = false;
+            return false;
+        }
+
+        $this->signatureSubject = substr($cert, $decoded[0]['content'][0]['start'], $decoded[0]['content'][0]['length']);
+
+        if ($this->isSubArrayValid($x509, 'tbsCertificate/extensions')) {
+            $this->mapInExtensions($x509, 'tbsCertificate/extensions');
+        }
+        $this->mapInDNs($x509, 'tbsCertificate/issuer/rdnSequence');
+        $this->mapInDNs($x509, 'tbsCertificate/subject/rdnSequence');
+
+        $key = $x509['tbsCertificate']['subjectPublicKeyInfo'];
+        $key = ASN1::encodeDER($key, Maps\SubjectPublicKeyInfo::MAP);
+        $x509['tbsCertificate']['subjectPublicKeyInfo']['subjectPublicKey'] =
+            "-----BEGIN PUBLIC KEY-----\r\n" .
+            chunk_split(base64_encode($key), 64) .
+            "-----END PUBLIC KEY-----";
+
+        $this->currentCert = $x509;
+        $this->dn = $x509['tbsCertificate']['subject'];
+
+        $currentKeyIdentifier = $this->getExtension('id-ce-subjectKeyIdentifier');
+        $this->currentKeyIdentifier = is_string($currentKeyIdentifier) ? $currentKeyIdentifier : null;
+
+        return $x509;
+    }
+
+    /**
+     * Save X.509 certificate
+     *
+     * @param array $cert
+     * @param int $format optional
+     * @return string
+     */
+    public function saveX509(array $cert, $format = self::FORMAT_PEM)
+    {
+        if (!is_array($cert) || !isset($cert['tbsCertificate'])) {
+            return false;
+        }
+
+        switch (true) {
+            // "case !$a: case !$b: break; default: whatever();" is the same thing as "if ($a && $b) whatever()"
+            case !($algorithm = $this->subArray($cert, 'tbsCertificate/subjectPublicKeyInfo/algorithm/algorithm')):
+            case is_object($cert['tbsCertificate']['subjectPublicKeyInfo']['subjectPublicKey']):
+                break;
+            default:
+                $cert['tbsCertificate']['subjectPublicKeyInfo'] = new Element(
+                    base64_decode(preg_replace('#-.+-|[\r\n]#', '', $cert['tbsCertificate']['subjectPublicKeyInfo']['subjectPublicKey']))
+                );
+        }
+
+        if ($algorithm == 'rsaEncryption') {
+            $cert['signatureAlgorithm']['parameters'] = null;
+            $cert['tbsCertificate']['signature']['parameters'] = null;
+        }
+
+        $filters = [];
+        $type_utf8_string = ['type' => ASN1::TYPE_UTF8_STRING];
+        $filters['tbsCertificate']['signature']['parameters'] = $type_utf8_string;
+        $filters['tbsCertificate']['signature']['issuer']['rdnSequence']['value'] = $type_utf8_string;
+        $filters['tbsCertificate']['issuer']['rdnSequence']['value'] = $type_utf8_string;
+        $filters['tbsCertificate']['subject']['rdnSequence']['value'] = $type_utf8_string;
+        $filters['tbsCertificate']['subjectPublicKeyInfo']['algorithm']['parameters'] = $type_utf8_string;
+        $filters['signatureAlgorithm']['parameters'] = $type_utf8_string;
+        $filters['authorityCertIssuer']['directoryName']['rdnSequence']['value'] = $type_utf8_string;
+        //$filters['policyQualifiers']['qualifier'] = $type_utf8_string;
+        $filters['distributionPoint']['fullName']['directoryName']['rdnSequence']['value'] = $type_utf8_string;
+        $filters['directoryName']['rdnSequence']['value'] = $type_utf8_string;
+
+        foreach (self::$extensions as $extension) {
+            $filters['tbsCertificate']['extensions'][] = $extension;
+        }
+
+        /* in the case of policyQualifiers/qualifier, the type has to be \phpseclib3\File\ASN1::TYPE_IA5_STRING.
+           \phpseclib3\File\ASN1::TYPE_PRINTABLE_STRING will cause OpenSSL's X.509 parser to spit out random
+           characters.
+         */
+        $filters['policyQualifiers']['qualifier']
+            = ['type' => ASN1::TYPE_IA5_STRING];
+
+        ASN1::setFilters($filters);
+
+        $this->mapOutExtensions($cert, 'tbsCertificate/extensions');
+        $this->mapOutDNs($cert, 'tbsCertificate/issuer/rdnSequence');
+        $this->mapOutDNs($cert, 'tbsCertificate/subject/rdnSequence');
+
+        $cert = ASN1::encodeDER($cert, Maps\Certificate::MAP);
+
+        switch ($format) {
+            case self::FORMAT_DER:
+                return $cert;
+            // case self::FORMAT_PEM:
+            default:
+                return "-----BEGIN CERTIFICATE-----\r\n" . chunk_split(Strings::base64_encode($cert), 64) . '-----END CERTIFICATE-----';
+        }
+    }
+
+    /**
+     * Map extension values from octet string to extension-specific internal
+     *   format.
+     *
+     * @param array $root (by reference)
+     * @param string $path
+     */
+    private function mapInExtensions(array &$root, $path)
+    {
+        $extensions = &$this->subArrayUnchecked($root, $path);
+
+        if ($extensions) {
+            for ($i = 0; $i < count($extensions); $i++) {
+                $id = $extensions[$i]['extnId'];
+                $value = &$extensions[$i]['extnValue'];
+                /* [extnValue] contains the DER encoding of an ASN.1 value
+                   corresponding to the extension type identified by extnID */
+                $map = $this->getMapping($id);
+                if (!is_bool($map)) {
+                    $decoder = $id == 'id-ce-nameConstraints' ?
+                        [static::class, 'decodeNameConstraintIP'] :
+                        [static::class, 'decodeIP'];
+                    $decoded = ASN1::decodeBER($value);
+                    if (!$decoded) {
+                        continue;
+                    }
+                    $mapped = ASN1::asn1map($decoded[0], $map, ['iPAddress' => $decoder]);
+                    $value = $mapped === false ? $decoded[0] : $mapped;
+
+                    if ($id == 'id-ce-certificatePolicies') {
+                        for ($j = 0; $j < count($value); $j++) {
+                            if (!isset($value[$j]['policyQualifiers'])) {
+                                continue;
+                            }
+                            for ($k = 0; $k < count($value[$j]['policyQualifiers']); $k++) {
+                                $subid = $value[$j]['policyQualifiers'][$k]['policyQualifierId'];
+                                $map = $this->getMapping($subid);
+                                $subvalue = &$value[$j]['policyQualifiers'][$k]['qualifier'];
+                                if ($map !== false) {
+                                    $decoded = ASN1::decodeBER($subvalue);
+                                    if (!$decoded) {
+                                        continue;
+                                    }
+                                    $mapped = ASN1::asn1map($decoded[0], $map);
+                                    $subvalue = $mapped === false ? $decoded[0] : $mapped;
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    /**
+     * Map extension values from extension-specific internal format to
+     *   octet string.
+     *
+     * @param array $root (by reference)
+     * @param string $path
+     */
+    private function mapOutExtensions(array &$root, $path)
+    {
+        $extensions = &$this->subArray($root, $path, !empty($this->extensionValues));
+
+        foreach ($this->extensionValues as $id => $data) {
+            extract($data);
+            $newext = [
+                'extnId' => $id,
+                'extnValue' => $value,
+                'critical' => $critical
+            ];
+            if ($replace) {
+                foreach ($extensions as $key => $value) {
+                    if ($value['extnId'] == $id) {
+                        $extensions[$key] = $newext;
+                        continue 2;
+                    }
+                }
+            }
+            $extensions[] = $newext;
+        }
+
+        if (is_array($extensions)) {
+            $size = count($extensions);
+            for ($i = 0; $i < $size; $i++) {
+                if ($extensions[$i] instanceof Element) {
+                    continue;
+                }
+
+                $id = $extensions[$i]['extnId'];
+                $value = &$extensions[$i]['extnValue'];
+
+                switch ($id) {
+                    case 'id-ce-certificatePolicies':
+                        for ($j = 0; $j < count($value); $j++) {
+                            if (!isset($value[$j]['policyQualifiers'])) {
+                                continue;
+                            }
+                            for ($k = 0; $k < count($value[$j]['policyQualifiers']); $k++) {
+                                $subid = $value[$j]['policyQualifiers'][$k]['policyQualifierId'];
+                                $map = $this->getMapping($subid);
+                                $subvalue = &$value[$j]['policyQualifiers'][$k]['qualifier'];
+                                if ($map !== false) {
+                                    // by default \phpseclib3\File\ASN1 will try to render qualifier as a \phpseclib3\File\ASN1::TYPE_IA5_STRING since it's
+                                    // actual type is \phpseclib3\File\ASN1::TYPE_ANY
+                                    $subvalue = new Element(ASN1::encodeDER($subvalue, $map));
+                                }
+                            }
+                        }
+                        break;
+                    case 'id-ce-authorityKeyIdentifier': // use 00 as the serial number instead of an empty string
+                        if (isset($value['authorityCertSerialNumber'])) {
+                            if ($value['authorityCertSerialNumber']->toBytes() == '') {
+                                $temp = chr((ASN1::CLASS_CONTEXT_SPECIFIC << 6) | 2) . "\1\0";
+                                $value['authorityCertSerialNumber'] = new Element($temp);
+                            }
+                        }
+                }
+
+                /* [extnValue] contains the DER encoding of an ASN.1 value
+                   corresponding to the extension type identified by extnID */
+                $map = $this->getMapping($id);
+                if (is_bool($map)) {
+                    if (!$map) {
+                        //user_error($id . ' is not a currently supported extension');
+                        unset($extensions[$i]);
+                    }
+                } else {
+                    $value = ASN1::encodeDER($value, $map, ['iPAddress' => [static::class, 'encodeIP']]);
+                }
+            }
+        }
+    }
+
+    /**
+     * Map attribute values from ANY type to attribute-specific internal
+     *   format.
+     *
+     * @param array $root (by reference)
+     * @param string $path
+     */
+    private function mapInAttributes(&$root, $path)
+    {
+        $attributes = &$this->subArray($root, $path);
+
+        if (is_array($attributes)) {
+            for ($i = 0; $i < count($attributes); $i++) {
+                $id = $attributes[$i]['type'];
+                /* $value contains the DER encoding of an ASN.1 value
+                   corresponding to the attribute type identified by type */
+                $map = $this->getMapping($id);
+                if (is_array($attributes[$i]['value'])) {
+                    $values = &$attributes[$i]['value'];
+                    for ($j = 0; $j < count($values); $j++) {
+                        $value = ASN1::encodeDER($values[$j], Maps\AttributeValue::MAP);
+                        $decoded = ASN1::decodeBER($value);
+                        if (!is_bool($map)) {
+                            if (!$decoded) {
+                                continue;
+                            }
+                            $mapped = ASN1::asn1map($decoded[0], $map);
+                            if ($mapped !== false) {
+                                $values[$j] = $mapped;
+                            }
+                            if ($id == 'pkcs-9-at-extensionRequest' && $this->isSubArrayValid($values, $j)) {
+                                $this->mapInExtensions($values, $j);
+                            }
+                        } elseif ($map) {
+                            $values[$j] = $value;
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    /**
+     * Map attribute values from attribute-specific internal format to
+     *   ANY type.
+     *
+     * @param array $root (by reference)
+     * @param string $path
+     */
+    private function mapOutAttributes(&$root, $path)
+    {
+        $attributes = &$this->subArray($root, $path);
+
+        if (is_array($attributes)) {
+            $size = count($attributes);
+            for ($i = 0; $i < $size; $i++) {
+                /* [value] contains the DER encoding of an ASN.1 value
+                   corresponding to the attribute type identified by type */
+                $id = $attributes[$i]['type'];
+                $map = $this->getMapping($id);
+                if ($map === false) {
+                    //user_error($id . ' is not a currently supported attribute', E_USER_NOTICE);
+                    unset($attributes[$i]);
+                } elseif (is_array($attributes[$i]['value'])) {
+                    $values = &$attributes[$i]['value'];
+                    for ($j = 0; $j < count($values); $j++) {
+                        switch ($id) {
+                            case 'pkcs-9-at-extensionRequest':
+                                $this->mapOutExtensions($values, $j);
+                                break;
+                        }
+
+                        if (!is_bool($map)) {
+                            $temp = ASN1::encodeDER($values[$j], $map);
+                            $decoded = ASN1::decodeBER($temp);
+                            if (!$decoded) {
+                                continue;
+                            }
+                            $values[$j] = ASN1::asn1map($decoded[0], Maps\AttributeValue::MAP);
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    /**
+     * Map DN values from ANY type to DN-specific internal
+     *   format.
+     *
+     * @param array $root (by reference)
+     * @param string $path
+     */
+    private function mapInDNs(array &$root, $path)
+    {
+        $dns = &$this->subArray($root, $path);
+
+        if (is_array($dns)) {
+            for ($i = 0; $i < count($dns); $i++) {
+                for ($j = 0; $j < count($dns[$i]); $j++) {
+                    $type = $dns[$i][$j]['type'];
+                    $value = &$dns[$i][$j]['value'];
+                    if (is_object($value) && $value instanceof Element) {
+                        $map = $this->getMapping($type);
+                        if (!is_bool($map)) {
+                            $decoded = ASN1::decodeBER($value);
+                            if (!$decoded) {
+                                continue;
+                            }
+                            $value = ASN1::asn1map($decoded[0], $map);
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    /**
+     * Map DN values from DN-specific internal format to
+     *   ANY type.
+     *
+     * @param array $root (by reference)
+     * @param string $path
+     */
+    private function mapOutDNs(array &$root, $path)
+    {
+        $dns = &$this->subArray($root, $path);
+
+        if (is_array($dns)) {
+            $size = count($dns);
+            for ($i = 0; $i < $size; $i++) {
+                for ($j = 0; $j < count($dns[$i]); $j++) {
+                    $type = $dns[$i][$j]['type'];
+                    $value = &$dns[$i][$j]['value'];
+                    if (is_object($value) && $value instanceof Element) {
+                        continue;
+                    }
+
+                    $map = $this->getMapping($type);
+                    if (!is_bool($map)) {
+                        $value = new Element(ASN1::encodeDER($value, $map));
+                    }
+                }
+            }
+        }
+    }
+
+    /**
+     * Associate an extension ID to an extension mapping
+     *
+     * @param string $extnId
+     * @return mixed
+     */
+    private function getMapping($extnId)
+    {
+        if (!is_string($extnId)) { // eg. if it's a \phpseclib3\File\ASN1\Element object
+            return true;
+        }
+
+        if (isset(self::$extensions[$extnId])) {
+            return self::$extensions[$extnId];
+        }
+
+        switch ($extnId) {
+            case 'id-ce-keyUsage':
+                return Maps\KeyUsage::MAP;
+            case 'id-ce-basicConstraints':
+                return Maps\BasicConstraints::MAP;
+            case 'id-ce-subjectKeyIdentifier':
+                return Maps\KeyIdentifier::MAP;
+            case 'id-ce-cRLDistributionPoints':
+                return Maps\CRLDistributionPoints::MAP;
+            case 'id-ce-authorityKeyIdentifier':
+                return Maps\AuthorityKeyIdentifier::MAP;
+            case 'id-ce-certificatePolicies':
+                return Maps\CertificatePolicies::MAP;
+            case 'id-ce-extKeyUsage':
+                return Maps\ExtKeyUsageSyntax::MAP;
+            case 'id-pe-authorityInfoAccess':
+                return Maps\AuthorityInfoAccessSyntax::MAP;
+            case 'id-ce-subjectAltName':
+                return Maps\SubjectAltName::MAP;
+            case 'id-ce-subjectDirectoryAttributes':
+                return Maps\SubjectDirectoryAttributes::MAP;
+            case 'id-ce-privateKeyUsagePeriod':
+                return Maps\PrivateKeyUsagePeriod::MAP;
+            case 'id-ce-issuerAltName':
+                return Maps\IssuerAltName::MAP;
+            case 'id-ce-policyMappings':
+                return Maps\PolicyMappings::MAP;
+            case 'id-ce-nameConstraints':
+                return Maps\NameConstraints::MAP;
+
+            case 'netscape-cert-type':
+                return Maps\netscape_cert_type::MAP;
+            case 'netscape-comment':
+                return Maps\netscape_comment::MAP;
+            case 'netscape-ca-policy-url':
+                return Maps\netscape_ca_policy_url::MAP;
+
+            // since id-qt-cps isn't a constructed type it will have already been decoded as a string by the time it gets
+            // back around to asn1map() and we don't want it decoded again.
+            //case 'id-qt-cps':
+            //    return Maps\CPSuri::MAP;
+            case 'id-qt-unotice':
+                return Maps\UserNotice::MAP;
+
+            // the following OIDs are unsupported but we don't want them to give notices when calling saveX509().
+            case 'id-pe-logotype': // http://www.ietf.org/rfc/rfc3709.txt
+            case 'entrustVersInfo':
+            // http://support.microsoft.com/kb/287547
+            case '1.3.6.1.4.1.311.20.2': // szOID_ENROLL_CERTTYPE_EXTENSION
+            case '1.3.6.1.4.1.311.21.1': // szOID_CERTSRV_CA_VERSION
+            // "SET Secure Electronic Transaction Specification"
+            // http://www.maithean.com/docs/set_bk3.pdf
+            case '2.23.42.7.0': // id-set-hashedRootKey
+            // "Certificate Transparency"
+            // https://tools.ietf.org/html/rfc6962
+            case '1.3.6.1.4.1.11129.2.4.2':
+            // "Qualified Certificate statements"
+            // https://tools.ietf.org/html/rfc3739#section-3.2.6
+            case '1.3.6.1.5.5.7.1.3':
+                return true;
+
+            // CSR attributes
+            case 'pkcs-9-at-unstructuredName':
+                return Maps\PKCS9String::MAP;
+            case 'pkcs-9-at-challengePassword':
+                return Maps\DirectoryString::MAP;
+            case 'pkcs-9-at-extensionRequest':
+                return Maps\Extensions::MAP;
+
+            // CRL extensions.
+            case 'id-ce-cRLNumber':
+                return Maps\CRLNumber::MAP;
+            case 'id-ce-deltaCRLIndicator':
+                return Maps\CRLNumber::MAP;
+            case 'id-ce-issuingDistributionPoint':
+                return Maps\IssuingDistributionPoint::MAP;
+            case 'id-ce-freshestCRL':
+                return Maps\CRLDistributionPoints::MAP;
+            case 'id-ce-cRLReasons':
+                return Maps\CRLReason::MAP;
+            case 'id-ce-invalidityDate':
+                return Maps\InvalidityDate::MAP;
+            case 'id-ce-certificateIssuer':
+                return Maps\CertificateIssuer::MAP;
+            case 'id-ce-holdInstructionCode':
+                return Maps\HoldInstructionCode::MAP;
+            case 'id-at-postalAddress':
+                return Maps\PostalAddress::MAP;
+        }
+
+        return false;
+    }
+
+    /**
+     * Load an X.509 certificate as a certificate authority
+     *
+     * @param string $cert
+     * @return bool
+     */
+    public function loadCA($cert)
+    {
+        $olddn = $this->dn;
+        $oldcert = $this->currentCert;
+        $oldsigsubj = $this->signatureSubject;
+        $oldkeyid = $this->currentKeyIdentifier;
+
+        $cert = $this->loadX509($cert);
+        if (!$cert) {
+            $this->dn = $olddn;
+            $this->currentCert = $oldcert;
+            $this->signatureSubject = $oldsigsubj;
+            $this->currentKeyIdentifier = $oldkeyid;
+
+            return false;
+        }
+
+        /* From RFC5280 "PKIX Certificate and CRL Profile":
+
+           If the keyUsage extension is present, then the subject public key
+           MUST NOT be used to verify signatures on certificates or CRLs unless
+           the corresponding keyCertSign or cRLSign bit is set. */
+        //$keyUsage = $this->getExtension('id-ce-keyUsage');
+        //if ($keyUsage && !in_array('keyCertSign', $keyUsage)) {
+        //    return false;
+        //}
+
+        /* From RFC5280 "PKIX Certificate and CRL Profile":
+
+           The cA boolean indicates whether the certified public key may be used
+           to verify certificate signatures.  If the cA boolean is not asserted,
+           then the keyCertSign bit in the key usage extension MUST NOT be
+           asserted.  If the basic constraints extension is not present in a
+           version 3 certificate, or the extension is present but the cA boolean
+           is not asserted, then the certified public key MUST NOT be used to
+           verify certificate signatures. */
+        //$basicConstraints = $this->getExtension('id-ce-basicConstraints');
+        //if (!$basicConstraints || !$basicConstraints['cA']) {
+        //    return false;
+        //}
+
+        $this->CAs[] = $cert;
+
+        $this->dn = $olddn;
+        $this->currentCert = $oldcert;
+        $this->signatureSubject = $oldsigsubj;
+
+        return true;
+    }
+
+    /**
+     * Validate an X.509 certificate against a URL
+     *
+     * From RFC2818 "HTTP over TLS":
+     *
+     * Matching is performed using the matching rules specified by
+     * [RFC2459].  If more than one identity of a given type is present in
+     * the certificate (e.g., more than one dNSName name, a match in any one
+     * of the set is considered acceptable.) Names may contain the wildcard
+     * character * which is considered to match any single domain name
+     * component or component fragment. E.g., *.a.com matches foo.a.com but
+     * not bar.foo.a.com. f*.com matches foo.com but not bar.com.
+     *
+     * @param string $url
+     * @return bool
+     */
+    public function validateURL($url)
+    {
+        if (!is_array($this->currentCert) || !isset($this->currentCert['tbsCertificate'])) {
+            return false;
+        }
+
+        $components = parse_url($url);
+        if (!isset($components['host'])) {
+            return false;
+        }
+
+        if ($names = $this->getExtension('id-ce-subjectAltName')) {
+            foreach ($names as $name) {
+                foreach ($name as $key => $value) {
+                    $value = preg_quote($value);
+                    $value = str_replace('\*', '[^.]*', $value);
+                    switch ($key) {
+                        case 'dNSName':
+                            /* From RFC2818 "HTTP over TLS":
+
+                               If a subjectAltName extension of type dNSName is present, that MUST
+                               be used as the identity. Otherwise, the (most specific) Common Name
+                               field in the Subject field of the certificate MUST be used. Although
+                               the use of the Common Name is existing practice, it is deprecated and
+                               Certification Authorities are encouraged to use the dNSName instead. */
+                            if (preg_match('#^' . $value . '$#', $components['host'])) {
+                                return true;
+                            }
+                            break;
+                        case 'iPAddress':
+                            /* From RFC2818 "HTTP over TLS":
+
+                               In some cases, the URI is specified as an IP address rather than a
+                               hostname. In this case, the iPAddress subjectAltName must be present
+                               in the certificate and must exactly match the IP in the URI. */
+                            if (preg_match('#(?:\d{1-3}\.){4}#', $components['host'] . '.') && preg_match('#^' . $value . '$#', $components['host'])) {
+                                return true;
+                            }
+                    }
+                }
+            }
+            return false;
+        }
+
+        if ($value = $this->getDNProp('id-at-commonName')) {
+            $value = str_replace(['.', '*'], ['\.', '[^.]*'], $value[0]);
+            return preg_match('#^' . $value . '$#', $components['host']) === 1;
+        }
+
+        return false;
+    }
+
+    /**
+     * Validate a date
+     *
+     * If $date isn't defined it is assumed to be the current date.
+     *
+     * @param \DateTimeInterface|string $date optional
+     * @return bool
+     */
+    public function validateDate($date = null)
+    {
+        if (!is_array($this->currentCert) || !isset($this->currentCert['tbsCertificate'])) {
+            return false;
+        }
+
+        if (!isset($date)) {
+            $date = new \DateTimeImmutable('now', new \DateTimeZone(@date_default_timezone_get()));
+        }
+
+        $notBefore = $this->currentCert['tbsCertificate']['validity']['notBefore'];
+        $notBefore = isset($notBefore['generalTime']) ? $notBefore['generalTime'] : $notBefore['utcTime'];
+
+        $notAfter = $this->currentCert['tbsCertificate']['validity']['notAfter'];
+        $notAfter = isset($notAfter['generalTime']) ? $notAfter['generalTime'] : $notAfter['utcTime'];
+
+        if (is_string($date)) {
+            $date = new \DateTimeImmutable($date, new \DateTimeZone(@date_default_timezone_get()));
+        }
+
+        $notBefore = new \DateTimeImmutable($notBefore, new \DateTimeZone(@date_default_timezone_get()));
+        $notAfter = new \DateTimeImmutable($notAfter, new \DateTimeZone(@date_default_timezone_get()));
+
+        return $date >= $notBefore && $date <= $notAfter;
+    }
+
+    /**
+     * Fetches a URL
+     *
+     * @param string $url
+     * @return bool|string
+     */
+    private static function fetchURL($url)
+    {
+        if (self::$disable_url_fetch) {
+            return false;
+        }
+
+        $parts = parse_url($url);
+        $data = '';
+        switch ($parts['scheme']) {
+            case 'http':
+                $fsock = @fsockopen($parts['host'], isset($parts['port']) ? $parts['port'] : 80);
+                if (!$fsock) {
+                    return false;
+                }
+                $path = $parts['path'];
+                if (isset($parts['query'])) {
+                    $path .= '?' . $parts['query'];
+                }
+                fputs($fsock, "GET $path HTTP/1.0\r\n");
+                fputs($fsock, "Host: $parts[host]\r\n\r\n");
+                $line = fgets($fsock, 1024);
+                if (strlen($line) < 3) {
+                    return false;
+                }
+                preg_match('#HTTP/1.\d (\d{3})#', $line, $temp);
+                if ($temp[1] != '200') {
+                    return false;
+                }
+
+                // skip the rest of the headers in the http response
+                while (!feof($fsock) && fgets($fsock, 1024) != "\r\n") {
+                }
+
+                while (!feof($fsock)) {
+                    $temp = fread($fsock, 1024);
+                    if ($temp === false) {
+                        return false;
+                    }
+                    $data .= $temp;
+                }
+
+                break;
+            //case 'ftp':
+            //case 'ldap':
+            //default:
+        }
+
+        return $data;
+    }
+
+    /**
+     * Validates an intermediate cert as identified via authority info access extension
+     *
+     * See https://tools.ietf.org/html/rfc4325 for more info
+     *
+     * @param bool $caonly
+     * @param int $count
+     * @return bool
+     */
+    private function testForIntermediate($caonly, $count)
+    {
+        $opts = $this->getExtension('id-pe-authorityInfoAccess');
+        if (!is_array($opts)) {
+            return false;
+        }
+        foreach ($opts as $opt) {
+            if ($opt['accessMethod'] == 'id-ad-caIssuers') {
+                // accessLocation is a GeneralName. GeneralName fields support stuff like email addresses, IP addresses, LDAP,
+                // etc, but we're only supporting URI's. URI's and LDAP are the only thing https://tools.ietf.org/html/rfc4325
+                // discusses
+                if (isset($opt['accessLocation']['uniformResourceIdentifier'])) {
+                    $url = $opt['accessLocation']['uniformResourceIdentifier'];
+                    break;
+                }
+            }
+        }
+
+        if (!isset($url)) {
+            return false;
+        }
+
+        $cert = static::fetchURL($url);
+        if (!is_string($cert)) {
+            return false;
+        }
+
+        $parent = new static();
+        $parent->CAs = $this->CAs;
+        /*
+         "Conforming applications that support HTTP or FTP for accessing
+          certificates MUST be able to accept .cer files and SHOULD be able
+          to accept .p7c files." -- https://tools.ietf.org/html/rfc4325
+
+         A .p7c file is 'a "certs-only" CMS message as specified in RFC 2797"
+
+         These are currently unsupported
+        */
+        if (!is_array($parent->loadX509($cert))) {
+            return false;
+        }
+
+        if (!$parent->validateSignatureCountable($caonly, ++$count)) {
+            return false;
+        }
+
+        $this->CAs[] = $parent->currentCert;
+        //$this->loadCA($cert);
+
+        return true;
+    }
+
+    /**
+     * Validate a signature
+     *
+     * Works on X.509 certs, CSR's and CRL's.
+     * Returns true if the signature is verified, false if it is not correct or null on error
+     *
+     * By default returns false for self-signed certs. Call validateSignature(false) to make this support
+     * self-signed.
+     *
+     * The behavior of this function is inspired by {@link http://php.net/openssl-verify openssl_verify}.
+     *
+     * @param bool $caonly optional
+     * @return mixed
+     */
+    public function validateSignature($caonly = true)
+    {
+        return $this->validateSignatureCountable($caonly, 0);
+    }
+
+    /**
+     * Validate a signature
+     *
+     * Performs said validation whilst keeping track of how many times validation method is called
+     *
+     * @param bool $caonly
+     * @param int $count
+     * @return mixed
+     */
+    private function validateSignatureCountable($caonly, $count)
+    {
+        if (!is_array($this->currentCert) || !isset($this->signatureSubject)) {
+            return null;
+        }
+
+        if ($count == self::$recur_limit) {
+            return false;
+        }
+
+        /* TODO:
+           "emailAddress attribute values are not case-sensitive (e.g., "subscriber@example.com" is the same as "SUBSCRIBER@EXAMPLE.COM")."
+            -- http://tools.ietf.org/html/rfc5280#section-4.1.2.6
+
+           implement pathLenConstraint in the id-ce-basicConstraints extension */
+
+        switch (true) {
+            case isset($this->currentCert['tbsCertificate']):
+                // self-signed cert
+                switch (true) {
+                    case !defined('FILE_X509_IGNORE_TYPE') && $this->currentCert['tbsCertificate']['issuer'] === $this->currentCert['tbsCertificate']['subject']:
+                    case defined('FILE_X509_IGNORE_TYPE') && $this->getIssuerDN(self::DN_STRING) === $this->getDN(self::DN_STRING):
+                        $authorityKey = $this->getExtension('id-ce-authorityKeyIdentifier');
+                        $subjectKeyID = $this->getExtension('id-ce-subjectKeyIdentifier');
+                        switch (true) {
+                            case !is_array($authorityKey):
+                            case !$subjectKeyID:
+                            case isset($authorityKey['keyIdentifier']) && $authorityKey['keyIdentifier'] === $subjectKeyID:
+                                $signingCert = $this->currentCert; // working cert
+                        }
+                }
+
+                if (!empty($this->CAs)) {
+                    for ($i = 0; $i < count($this->CAs); $i++) {
+                        // even if the cert is a self-signed one we still want to see if it's a CA;
+                        // if not, we'll conditionally return an error
+                        $ca = $this->CAs[$i];
+                        switch (true) {
+                            case !defined('FILE_X509_IGNORE_TYPE') && $this->currentCert['tbsCertificate']['issuer'] === $ca['tbsCertificate']['subject']:
+                            case defined('FILE_X509_IGNORE_TYPE') && $this->getDN(self::DN_STRING, $this->currentCert['tbsCertificate']['issuer']) === $this->getDN(self::DN_STRING, $ca['tbsCertificate']['subject']):
+                                $authorityKey = $this->getExtension('id-ce-authorityKeyIdentifier');
+                                $subjectKeyID = $this->getExtension('id-ce-subjectKeyIdentifier', $ca);
+                                switch (true) {
+                                    case !is_array($authorityKey):
+                                    case !$subjectKeyID:
+                                    case isset($authorityKey['keyIdentifier']) && $authorityKey['keyIdentifier'] === $subjectKeyID:
+                                        if (is_array($authorityKey) && isset($authorityKey['authorityCertSerialNumber']) && !$authorityKey['authorityCertSerialNumber']->equals($ca['tbsCertificate']['serialNumber'])) {
+                                            break 2; // serial mismatch - check other ca
+                                        }
+                                        $signingCert = $ca; // working cert
+                                        break 3;
+                                }
+                        }
+                    }
+                    if (count($this->CAs) == $i && $caonly) {
+                        return $this->testForIntermediate($caonly, $count) && $this->validateSignature($caonly);
+                    }
+                } elseif (!isset($signingCert) || $caonly) {
+                    return $this->testForIntermediate($caonly, $count) && $this->validateSignature($caonly);
+                }
+                return $this->validateSignatureHelper(
+                    $signingCert['tbsCertificate']['subjectPublicKeyInfo']['algorithm']['algorithm'],
+                    $signingCert['tbsCertificate']['subjectPublicKeyInfo']['subjectPublicKey'],
+                    $this->currentCert['signatureAlgorithm']['algorithm'],
+                    substr($this->currentCert['signature'], 1),
+                    $this->signatureSubject
+                );
+            case isset($this->currentCert['certificationRequestInfo']):
+                return $this->validateSignatureHelper(
+                    $this->currentCert['certificationRequestInfo']['subjectPKInfo']['algorithm']['algorithm'],
+                    $this->currentCert['certificationRequestInfo']['subjectPKInfo']['subjectPublicKey'],
+                    $this->currentCert['signatureAlgorithm']['algorithm'],
+                    substr($this->currentCert['signature'], 1),
+                    $this->signatureSubject
+                );
+            case isset($this->currentCert['publicKeyAndChallenge']):
+                return $this->validateSignatureHelper(
+                    $this->currentCert['publicKeyAndChallenge']['spki']['algorithm']['algorithm'],
+                    $this->currentCert['publicKeyAndChallenge']['spki']['subjectPublicKey'],
+                    $this->currentCert['signatureAlgorithm']['algorithm'],
+                    substr($this->currentCert['signature'], 1),
+                    $this->signatureSubject
+                );
+            case isset($this->currentCert['tbsCertList']):
+                if (!empty($this->CAs)) {
+                    for ($i = 0; $i < count($this->CAs); $i++) {
+                        $ca = $this->CAs[$i];
+                        switch (true) {
+                            case !defined('FILE_X509_IGNORE_TYPE') && $this->currentCert['tbsCertList']['issuer'] === $ca['tbsCertificate']['subject']:
+                            case defined('FILE_X509_IGNORE_TYPE') && $this->getDN(self::DN_STRING, $this->currentCert['tbsCertList']['issuer']) === $this->getDN(self::DN_STRING, $ca['tbsCertificate']['subject']):
+                                $authorityKey = $this->getExtension('id-ce-authorityKeyIdentifier');
+                                $subjectKeyID = $this->getExtension('id-ce-subjectKeyIdentifier', $ca);
+                                switch (true) {
+                                    case !is_array($authorityKey):
+                                    case !$subjectKeyID:
+                                    case isset($authorityKey['keyIdentifier']) && $authorityKey['keyIdentifier'] === $subjectKeyID:
+                                        if (is_array($authorityKey) && isset($authorityKey['authorityCertSerialNumber']) && !$authorityKey['authorityCertSerialNumber']->equals($ca['tbsCertificate']['serialNumber'])) {
+                                            break 2; // serial mismatch - check other ca
+                                        }
+                                        $signingCert = $ca; // working cert
+                                        break 3;
+                                }
+                        }
+                    }
+                }
+                if (!isset($signingCert)) {
+                    return false;
+                }
+                return $this->validateSignatureHelper(
+                    $signingCert['tbsCertificate']['subjectPublicKeyInfo']['algorithm']['algorithm'],
+                    $signingCert['tbsCertificate']['subjectPublicKeyInfo']['subjectPublicKey'],
+                    $this->currentCert['signatureAlgorithm']['algorithm'],
+                    substr($this->currentCert['signature'], 1),
+                    $this->signatureSubject
+                );
+            default:
+                return false;
+        }
+    }
+
+    /**
+     * Validates a signature
+     *
+     * Returns true if the signature is verified and false if it is not correct.
+     * If the algorithms are unsupposed an exception is thrown.
+     *
+     * @param string $publicKeyAlgorithm
+     * @param string $publicKey
+     * @param string $signatureAlgorithm
+     * @param string $signature
+     * @param string $signatureSubject
+     * @throws \phpseclib3\Exception\UnsupportedAlgorithmException if the algorithm is unsupported
+     * @return bool
+     */
+    private function validateSignatureHelper($publicKeyAlgorithm, $publicKey, $signatureAlgorithm, $signature, $signatureSubject)
+    {
+        switch ($publicKeyAlgorithm) {
+            case 'id-RSASSA-PSS':
+                $key = RSA::loadFormat('PSS', $publicKey);
+                break;
+            case 'rsaEncryption':
+                $key = RSA::loadFormat('PKCS8', $publicKey);
+                switch ($signatureAlgorithm) {
+                    case 'id-RSASSA-PSS':
+                        break;
+                    case 'md2WithRSAEncryption':
+                    case 'md5WithRSAEncryption':
+                    case 'sha1WithRSAEncryption':
+                    case 'sha224WithRSAEncryption':
+                    case 'sha256WithRSAEncryption':
+                    case 'sha384WithRSAEncryption':
+                    case 'sha512WithRSAEncryption':
+                        $key = $key
+                            ->withHash(preg_replace('#WithRSAEncryption$#', '', $signatureAlgorithm))
+                            ->withPadding(RSA::SIGNATURE_PKCS1);
+                        break;
+                    default:
+                        throw new UnsupportedAlgorithmException('Signature algorithm unsupported');
+                }
+                break;
+            case 'id-Ed25519':
+            case 'id-Ed448':
+                $key = EC::loadFormat('PKCS8', $publicKey);
+                break;
+            case 'id-ecPublicKey':
+                $key = EC::loadFormat('PKCS8', $publicKey);
+                switch ($signatureAlgorithm) {
+                    case 'ecdsa-with-SHA1':
+                    case 'ecdsa-with-SHA224':
+                    case 'ecdsa-with-SHA256':
+                    case 'ecdsa-with-SHA384':
+                    case 'ecdsa-with-SHA512':
+                        $key = $key
+                            ->withHash(preg_replace('#^ecdsa-with-#', '', strtolower($signatureAlgorithm)));
+                        break;
+                    default:
+                        throw new UnsupportedAlgorithmException('Signature algorithm unsupported');
+                }
+                break;
+            case 'id-dsa':
+                $key = DSA::loadFormat('PKCS8', $publicKey);
+                switch ($signatureAlgorithm) {
+                    case 'id-dsa-with-sha1':
+                    case 'id-dsa-with-sha224':
+                    case 'id-dsa-with-sha256':
+                        $key = $key
+                            ->withHash(preg_replace('#^id-dsa-with-#', '', strtolower($signatureAlgorithm)));
+                        break;
+                    default:
+                        throw new UnsupportedAlgorithmException('Signature algorithm unsupported');
+                }
+                break;
+            default:
+                throw new UnsupportedAlgorithmException('Public key algorithm unsupported');
+        }
+
+        return $key->verify($signatureSubject, $signature);
+    }
+
+    /**
+     * Sets the recursion limit
+     *
+     * When validating a signature it may be necessary to download intermediate certs from URI's.
+     * An intermediate cert that linked to itself would result in an infinite loop so to prevent
+     * that we set a recursion limit. A negative number means that there is no recursion limit.
+     *
+     * @param int $count
+     */
+    public static function setRecurLimit($count)
+    {
+        self::$recur_limit = $count;
+    }
+
+    /**
+     * Prevents URIs from being automatically retrieved
+     *
+     */
+    public static function disableURLFetch()
+    {
+        self::$disable_url_fetch = true;
+    }
+
+    /**
+     * Allows URIs to be automatically retrieved
+     *
+     */
+    public static function enableURLFetch()
+    {
+        self::$disable_url_fetch = false;
+    }
+
+    /**
+     * Decodes an IP address
+     *
+     * Takes in a base64 encoded "blob" and returns a human readable IP address
+     *
+     * @param string $ip
+     * @return string
+     */
+    public static function decodeIP($ip)
+    {
+        return inet_ntop($ip);
+    }
+
+    /**
+     * Decodes an IP address in a name constraints extension
+     *
+     * Takes in a base64 encoded "blob" and returns a human readable IP address / mask
+     *
+     * @param string $ip
+     * @return array
+     */
+    public static function decodeNameConstraintIP($ip)
+    {
+        $size = strlen($ip) >> 1;
+        $mask = substr($ip, $size);
+        $ip = substr($ip, 0, $size);
+        return [inet_ntop($ip), inet_ntop($mask)];
+    }
+
+    /**
+     * Encodes an IP address
+     *
+     * Takes a human readable IP address into a base64-encoded "blob"
+     *
+     * @param string|array $ip
+     * @return string
+     */
+    public static function encodeIP($ip)
+    {
+        return is_string($ip) ?
+            inet_pton($ip) :
+            inet_pton($ip[0]) . inet_pton($ip[1]);
+    }
+
+    /**
+     * "Normalizes" a Distinguished Name property
+     *
+     * @param string $propName
+     * @return mixed
+     */
+    private function translateDNProp($propName)
+    {
+        switch (strtolower($propName)) {
+            case 'jurisdictionofincorporationcountryname':
+            case 'jurisdictioncountryname':
+            case 'jurisdictionc':
+                return 'jurisdictionOfIncorporationCountryName';
+            case 'jurisdictionofincorporationstateorprovincename':
+            case 'jurisdictionstateorprovincename':
+            case 'jurisdictionst':
+                return 'jurisdictionOfIncorporationStateOrProvinceName';
+            case 'jurisdictionlocalityname':
+            case 'jurisdictionl':
+                return 'jurisdictionLocalityName';
+            case 'id-at-businesscategory':
+            case 'businesscategory':
+                return 'id-at-businessCategory';
+            case 'id-at-countryname':
+            case 'countryname':
+            case 'c':
+                return 'id-at-countryName';
+            case 'id-at-organizationname':
+            case 'organizationname':
+            case 'o':
+                return 'id-at-organizationName';
+            case 'id-at-dnqualifier':
+            case 'dnqualifier':
+                return 'id-at-dnQualifier';
+            case 'id-at-commonname':
+            case 'commonname':
+            case 'cn':
+                return 'id-at-commonName';
+            case 'id-at-stateorprovincename':
+            case 'stateorprovincename':
+            case 'state':
+            case 'province':
+            case 'provincename':
+            case 'st':
+                return 'id-at-stateOrProvinceName';
+            case 'id-at-localityname':
+            case 'localityname':
+            case 'l':
+                return 'id-at-localityName';
+            case 'id-emailaddress':
+            case 'emailaddress':
+                return 'pkcs-9-at-emailAddress';
+            case 'id-at-serialnumber':
+            case 'serialnumber':
+                return 'id-at-serialNumber';
+            case 'id-at-postalcode':
+            case 'postalcode':
+                return 'id-at-postalCode';
+            case 'id-at-streetaddress':
+            case 'streetaddress':
+                return 'id-at-streetAddress';
+            case 'id-at-name':
+            case 'name':
+                return 'id-at-name';
+            case 'id-at-givenname':
+            case 'givenname':
+                return 'id-at-givenName';
+            case 'id-at-surname':
+            case 'surname':
+            case 'sn':
+                return 'id-at-surname';
+            case 'id-at-initials':
+            case 'initials':
+                return 'id-at-initials';
+            case 'id-at-generationqualifier':
+            case 'generationqualifier':
+                return 'id-at-generationQualifier';
+            case 'id-at-organizationalunitname':
+            case 'organizationalunitname':
+            case 'ou':
+                return 'id-at-organizationalUnitName';
+            case 'id-at-pseudonym':
+            case 'pseudonym':
+                return 'id-at-pseudonym';
+            case 'id-at-title':
+            case 'title':
+                return 'id-at-title';
+            case 'id-at-description':
+            case 'description':
+                return 'id-at-description';
+            case 'id-at-role':
+            case 'role':
+                return 'id-at-role';
+            case 'id-at-uniqueidentifier':
+            case 'uniqueidentifier':
+            case 'x500uniqueidentifier':
+                return 'id-at-uniqueIdentifier';
+            case 'postaladdress':
+            case 'id-at-postaladdress':
+                return 'id-at-postalAddress';
+            default:
+                return false;
+        }
+    }
+
+    /**
+     * Set a Distinguished Name property
+     *
+     * @param string $propName
+     * @param mixed $propValue
+     * @param string $type optional
+     * @return bool
+     */
+    public function setDNProp($propName, $propValue, $type = 'utf8String')
+    {
+        if (empty($this->dn)) {
+            $this->dn = ['rdnSequence' => []];
+        }
+
+        if (($propName = $this->translateDNProp($propName)) === false) {
+            return false;
+        }
+
+        foreach ((array) $propValue as $v) {
+            if (!is_array($v) && isset($type)) {
+                $v = [$type => $v];
+            }
+            $this->dn['rdnSequence'][] = [
+                [
+                    'type' => $propName,
+                    'value' => $v
+                ]
+            ];
+        }
+
+        return true;
+    }
+
+    /**
+     * Remove Distinguished Name properties
+     *
+     * @param string $propName
+     */
+    public function removeDNProp($propName)
+    {
+        if (empty($this->dn)) {
+            return;
+        }
+
+        if (($propName = $this->translateDNProp($propName)) === false) {
+            return;
+        }
+
+        $dn = &$this->dn['rdnSequence'];
+        $size = count($dn);
+        for ($i = 0; $i < $size; $i++) {
+            if ($dn[$i][0]['type'] == $propName) {
+                unset($dn[$i]);
+            }
+        }
+
+        $dn = array_values($dn);
+        // fix for https://bugs.php.net/75433 affecting PHP 7.2
+        if (!isset($dn[0])) {
+            $dn = array_splice($dn, 0, 0);
+        }
+    }
+
+    /**
+     * Get Distinguished Name properties
+     *
+     * @param string $propName
+     * @param array $dn optional
+     * @param bool $withType optional
+     * @return mixed
+     */
+    public function getDNProp($propName, array $dn = null, $withType = false)
+    {
+        if (!isset($dn)) {
+            $dn = $this->dn;
+        }
+
+        if (empty($dn)) {
+            return false;
+        }
+
+        if (($propName = $this->translateDNProp($propName)) === false) {
+            return false;
+        }
+
+        $filters = [];
+        $filters['value'] = ['type' => ASN1::TYPE_UTF8_STRING];
+        ASN1::setFilters($filters);
+        $this->mapOutDNs($dn, 'rdnSequence');
+        $dn = $dn['rdnSequence'];
+        $result = [];
+        for ($i = 0; $i < count($dn); $i++) {
+            if ($dn[$i][0]['type'] == $propName) {
+                $v = $dn[$i][0]['value'];
+                if (!$withType) {
+                    if (is_array($v)) {
+                        foreach ($v as $type => $s) {
+                            $type = array_search($type, ASN1::ANY_MAP);
+                            if ($type !== false && array_key_exists($type, ASN1::STRING_TYPE_SIZE)) {
+                                $s = ASN1::convert($s, $type);
+                                if ($s !== false) {
+                                    $v = $s;
+                                    break;
+                                }
+                            }
+                        }
+                        if (is_array($v)) {
+                            $v = array_pop($v); // Always strip data type.
+                        }
+                    } elseif (is_object($v) && $v instanceof Element) {
+                        $map = $this->getMapping($propName);
+                        if (!is_bool($map)) {
+                            $decoded = ASN1::decodeBER($v);
+                            if (!$decoded) {
+                                return false;
+                            }
+                            $v = ASN1::asn1map($decoded[0], $map);
+                        }
+                    }
+                }
+                $result[] = $v;
+            }
+        }
+
+        return $result;
+    }
+
+    /**
+     * Set a Distinguished Name
+     *
+     * @param mixed $dn
+     * @param bool $merge optional
+     * @param string $type optional
+     * @return bool
+     */
+    public function setDN($dn, $merge = false, $type = 'utf8String')
+    {
+        if (!$merge) {
+            $this->dn = null;
+        }
+
+        if (is_array($dn)) {
+            if (isset($dn['rdnSequence'])) {
+                $this->dn = $dn; // No merge here.
+                return true;
+            }
+
+            // handles stuff generated by openssl_x509_parse()
+            foreach ($dn as $prop => $value) {
+                if (!$this->setDNProp($prop, $value, $type)) {
+                    return false;
+                }
+            }
+            return true;
+        }
+
+        // handles everything else
+        $results = preg_split('#((?:^|, *|/)(?:C=|O=|OU=|CN=|L=|ST=|SN=|postalCode=|streetAddress=|emailAddress=|serialNumber=|organizationalUnitName=|title=|description=|role=|x500UniqueIdentifier=|postalAddress=))#', $dn, -1, PREG_SPLIT_DELIM_CAPTURE);
+        for ($i = 1; $i < count($results); $i += 2) {
+            $prop = trim($results[$i], ', =/');
+            $value = $results[$i + 1];
+            if (!$this->setDNProp($prop, $value, $type)) {
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+    /**
+     * Get the Distinguished Name for a certificates subject
+     *
+     * @param mixed $format optional
+     * @param array $dn optional
+     * @return array|bool|string
+     */
+    public function getDN($format = self::DN_ARRAY, array $dn = null)
+    {
+        if (!isset($dn)) {
+            $dn = isset($this->currentCert['tbsCertList']) ? $this->currentCert['tbsCertList']['issuer'] : $this->dn;
+        }
+
+        switch ((int) $format) {
+            case self::DN_ARRAY:
+                return $dn;
+            case self::DN_ASN1:
+                $filters = [];
+                $filters['rdnSequence']['value'] = ['type' => ASN1::TYPE_UTF8_STRING];
+                ASN1::setFilters($filters);
+                $this->mapOutDNs($dn, 'rdnSequence');
+                return ASN1::encodeDER($dn, Maps\Name::MAP);
+            case self::DN_CANON:
+                //  No SEQUENCE around RDNs and all string values normalized as
+                // trimmed lowercase UTF-8 with all spacing as one blank.
+                // constructed RDNs will not be canonicalized
+                $filters = [];
+                $filters['value'] = ['type' => ASN1::TYPE_UTF8_STRING];
+                ASN1::setFilters($filters);
+                $result = '';
+                $this->mapOutDNs($dn, 'rdnSequence');
+                foreach ($dn['rdnSequence'] as $rdn) {
+                    foreach ($rdn as $i => $attr) {
+                        $attr = &$rdn[$i];
+                        if (is_array($attr['value'])) {
+                            foreach ($attr['value'] as $type => $v) {
+                                $type = array_search($type, ASN1::ANY_MAP, true);
+                                if ($type !== false && array_key_exists($type, ASN1::STRING_TYPE_SIZE)) {
+                                    $v = ASN1::convert($v, $type);
+                                    if ($v !== false) {
+                                        $v = preg_replace('/\s+/', ' ', $v);
+                                        $attr['value'] = strtolower(trim($v));
+                                        break;
+                                    }
+                                }
+                            }
+                        }
+                    }
+                    $result .= ASN1::encodeDER($rdn, Maps\RelativeDistinguishedName::MAP);
+                }
+                return $result;
+            case self::DN_HASH:
+                $dn = $this->getDN(self::DN_CANON, $dn);
+                $hash = new Hash('sha1');
+                $hash = $hash->hash($dn);
+                extract(unpack('Vhash', $hash));
+                return strtolower(Strings::bin2hex(pack('N', $hash)));
+        }
+
+        // Default is to return a string.
+        $start = true;
+        $output = '';
+
+        $result = [];
+        $filters = [];
+        $filters['rdnSequence']['value'] = ['type' => ASN1::TYPE_UTF8_STRING];
+        ASN1::setFilters($filters);
+        $this->mapOutDNs($dn, 'rdnSequence');
+
+        foreach ($dn['rdnSequence'] as $field) {
+            $prop = $field[0]['type'];
+            $value = $field[0]['value'];
+
+            $delim = ', ';
+            switch ($prop) {
+                case 'id-at-countryName':
+                    $desc = 'C';
+                    break;
+                case 'id-at-stateOrProvinceName':
+                    $desc = 'ST';
+                    break;
+                case 'id-at-organizationName':
+                    $desc = 'O';
+                    break;
+                case 'id-at-organizationalUnitName':
+                    $desc = 'OU';
+                    break;
+                case 'id-at-commonName':
+                    $desc = 'CN';
+                    break;
+                case 'id-at-localityName':
+                    $desc = 'L';
+                    break;
+                case 'id-at-surname':
+                    $desc = 'SN';
+                    break;
+                case 'id-at-uniqueIdentifier':
+                    $delim = '/';
+                    $desc = 'x500UniqueIdentifier';
+                    break;
+                case 'id-at-postalAddress':
+                    $delim = '/';
+                    $desc = 'postalAddress';
+                    break;
+                default:
+                    $delim = '/';
+                    $desc = preg_replace('#.+-([^-]+)$#', '$1', $prop);
+            }
+
+            if (!$start) {
+                $output .= $delim;
+            }
+            if (is_array($value)) {
+                foreach ($value as $type => $v) {
+                    $type = array_search($type, ASN1::ANY_MAP, true);
+                    if ($type !== false && array_key_exists($type, ASN1::STRING_TYPE_SIZE)) {
+                        $v = ASN1::convert($v, $type);
+                        if ($v !== false) {
+                            $value = $v;
+                            break;
+                        }
+                    }
+                }
+                if (is_array($value)) {
+                    $value = array_pop($value); // Always strip data type.
+                }
+            } elseif (is_object($value) && $value instanceof Element) {
+                $callback = function ($x) {
+                    return '\x' . bin2hex($x[0]);
+                };
+                $value = strtoupper(preg_replace_callback('#[^\x20-\x7E]#', $callback, $value->element));
+            }
+            $output .= $desc . '=' . $value;
+            $result[$desc] = isset($result[$desc]) ?
+                array_merge((array) $result[$desc], [$value]) :
+                $value;
+            $start = false;
+        }
+
+        return $format == self::DN_OPENSSL ? $result : $output;
+    }
+
+    /**
+     * Get the Distinguished Name for a certificate/crl issuer
+     *
+     * @param int $format optional
+     * @return mixed
+     */
+    public function getIssuerDN($format = self::DN_ARRAY)
+    {
+        switch (true) {
+            case !isset($this->currentCert) || !is_array($this->currentCert):
+                break;
+            case isset($this->currentCert['tbsCertificate']):
+                return $this->getDN($format, $this->currentCert['tbsCertificate']['issuer']);
+            case isset($this->currentCert['tbsCertList']):
+                return $this->getDN($format, $this->currentCert['tbsCertList']['issuer']);
+        }
+
+        return false;
+    }
+
+    /**
+     * Get the Distinguished Name for a certificate/csr subject
+     * Alias of getDN()
+     *
+     * @param int $format optional
+     * @return mixed
+     */
+    public function getSubjectDN($format = self::DN_ARRAY)
+    {
+        switch (true) {
+            case !empty($this->dn):
+                return $this->getDN($format);
+            case !isset($this->currentCert) || !is_array($this->currentCert):
+                break;
+            case isset($this->currentCert['tbsCertificate']):
+                return $this->getDN($format, $this->currentCert['tbsCertificate']['subject']);
+            case isset($this->currentCert['certificationRequestInfo']):
+                return $this->getDN($format, $this->currentCert['certificationRequestInfo']['subject']);
+        }
+
+        return false;
+    }
+
+    /**
+     * Get an individual Distinguished Name property for a certificate/crl issuer
+     *
+     * @param string $propName
+     * @param bool $withType optional
+     * @return mixed
+     */
+    public function getIssuerDNProp($propName, $withType = false)
+    {
+        switch (true) {
+            case !isset($this->currentCert) || !is_array($this->currentCert):
+                break;
+            case isset($this->currentCert['tbsCertificate']):
+                return $this->getDNProp($propName, $this->currentCert['tbsCertificate']['issuer'], $withType);
+            case isset($this->currentCert['tbsCertList']):
+                return $this->getDNProp($propName, $this->currentCert['tbsCertList']['issuer'], $withType);
+        }
+
+        return false;
+    }
+
+    /**
+     * Get an individual Distinguished Name property for a certificate/csr subject
+     *
+     * @param string $propName
+     * @param bool $withType optional
+     * @return mixed
+     */
+    public function getSubjectDNProp($propName, $withType = false)
+    {
+        switch (true) {
+            case !empty($this->dn):
+                return $this->getDNProp($propName, null, $withType);
+            case !isset($this->currentCert) || !is_array($this->currentCert):
+                break;
+            case isset($this->currentCert['tbsCertificate']):
+                return $this->getDNProp($propName, $this->currentCert['tbsCertificate']['subject'], $withType);
+            case isset($this->currentCert['certificationRequestInfo']):
+                return $this->getDNProp($propName, $this->currentCert['certificationRequestInfo']['subject'], $withType);
+        }
+
+        return false;
+    }
+
+    /**
+     * Get the certificate chain for the current cert
+     *
+     * @return mixed
+     */
+    public function getChain()
+    {
+        $chain = [$this->currentCert];
+
+        if (!is_array($this->currentCert) || !isset($this->currentCert['tbsCertificate'])) {
+            return false;
+        }
+        while (true) {
+            $currentCert = $chain[count($chain) - 1];
+            for ($i = 0; $i < count($this->CAs); $i++) {
+                $ca = $this->CAs[$i];
+                if ($currentCert['tbsCertificate']['issuer'] === $ca['tbsCertificate']['subject']) {
+                    $authorityKey = $this->getExtension('id-ce-authorityKeyIdentifier', $currentCert);
+                    $subjectKeyID = $this->getExtension('id-ce-subjectKeyIdentifier', $ca);
+                    switch (true) {
+                        case !is_array($authorityKey):
+                        case is_array($authorityKey) && isset($authorityKey['keyIdentifier']) && $authorityKey['keyIdentifier'] === $subjectKeyID:
+                            if ($currentCert === $ca) {
+                                break 3;
+                            }
+                            $chain[] = $ca;
+                            break 2;
+                    }
+                }
+            }
+            if ($i == count($this->CAs)) {
+                break;
+            }
+        }
+        foreach ($chain as $key => $value) {
+            $chain[$key] = new X509();
+            $chain[$key]->loadX509($value);
+        }
+        return $chain;
+    }
+
+    /**
+     * Returns the current cert
+     *
+     * @return array|bool
+     */
+    public function &getCurrentCert()
+    {
+        return $this->currentCert;
+    }
+
+    /**
+     * Set public key
+     *
+     * Key needs to be a \phpseclib3\Crypt\RSA object
+     *
+     * @param PublicKey $key
+     * @return void
+     */
+    public function setPublicKey(PublicKey $key)
+    {
+        $this->publicKey = $key;
+    }
+
+    /**
+     * Set private key
+     *
+     * Key needs to be a \phpseclib3\Crypt\RSA object
+     *
+     * @param PrivateKey $key
+     */
+    public function setPrivateKey(PrivateKey $key)
+    {
+        $this->privateKey = $key;
+    }
+
+    /**
+     * Set challenge
+     *
+     * Used for SPKAC CSR's
+     *
+     * @param string $challenge
+     */
+    public function setChallenge($challenge)
+    {
+        $this->challenge = $challenge;
+    }
+
+    /**
+     * Gets the public key
+     *
+     * Returns a \phpseclib3\Crypt\RSA object or a false.
+     *
+     * @return mixed
+     */
+    public function getPublicKey()
+    {
+        if (isset($this->publicKey)) {
+            return $this->publicKey;
+        }
+
+        if (isset($this->currentCert) && is_array($this->currentCert)) {
+            $paths = [
+                'tbsCertificate/subjectPublicKeyInfo',
+                'certificationRequestInfo/subjectPKInfo',
+                'publicKeyAndChallenge/spki'
+            ];
+            foreach ($paths as $path) {
+                $keyinfo = $this->subArray($this->currentCert, $path);
+                if (!empty($keyinfo)) {
+                    break;
+                }
+            }
+        }
+        if (empty($keyinfo)) {
+            return false;
+        }
+
+        $key = $keyinfo['subjectPublicKey'];
+
+        switch ($keyinfo['algorithm']['algorithm']) {
+            case 'id-RSASSA-PSS':
+                return RSA::loadFormat('PSS', $key);
+            case 'rsaEncryption':
+                return RSA::loadFormat('PKCS8', $key)->withPadding(RSA::SIGNATURE_PKCS1);
+            case 'id-ecPublicKey':
+            case 'id-Ed25519':
+            case 'id-Ed448':
+                return EC::loadFormat('PKCS8', $key);
+            case 'id-dsa':
+                return DSA::loadFormat('PKCS8', $key);
+        }
+
+        return false;
+    }
+
+    /**
+     * Load a Certificate Signing Request
+     *
+     * @param string $csr
+     * @param int $mode
+     * @return mixed
+     */
+    public function loadCSR($csr, $mode = self::FORMAT_AUTO_DETECT)
+    {
+        if (is_array($csr) && isset($csr['certificationRequestInfo'])) {
+            unset($this->currentCert);
+            unset($this->currentKeyIdentifier);
+            unset($this->signatureSubject);
+            $this->dn = $csr['certificationRequestInfo']['subject'];
+            if (!isset($this->dn)) {
+                return false;
+            }
+
+            $this->currentCert = $csr;
+            return $csr;
+        }
+
+        // see http://tools.ietf.org/html/rfc2986
+
+        if ($mode != self::FORMAT_DER) {
+            $newcsr = ASN1::extractBER($csr);
+            if ($mode == self::FORMAT_PEM && $csr == $newcsr) {
+                return false;
+            }
+            $csr = $newcsr;
+        }
+        $orig = $csr;
+
+        if ($csr === false) {
+            $this->currentCert = false;
+            return false;
+        }
+
+        $decoded = ASN1::decodeBER($csr);
+
+        if (!$decoded) {
+            $this->currentCert = false;
+            return false;
+        }
+
+        $csr = ASN1::asn1map($decoded[0], Maps\CertificationRequest::MAP);
+        if (!isset($csr) || $csr === false) {
+            $this->currentCert = false;
+            return false;
+        }
+
+        $this->mapInAttributes($csr, 'certificationRequestInfo/attributes');
+        $this->mapInDNs($csr, 'certificationRequestInfo/subject/rdnSequence');
+
+        $this->dn = $csr['certificationRequestInfo']['subject'];
+
+        $this->signatureSubject = substr($orig, $decoded[0]['content'][0]['start'], $decoded[0]['content'][0]['length']);
+
+        $key = $csr['certificationRequestInfo']['subjectPKInfo'];
+        $key = ASN1::encodeDER($key, Maps\SubjectPublicKeyInfo::MAP);
+        $csr['certificationRequestInfo']['subjectPKInfo']['subjectPublicKey'] =
+            "-----BEGIN PUBLIC KEY-----\r\n" .
+            chunk_split(base64_encode($key), 64) .
+            "-----END PUBLIC KEY-----";
+
+        $this->currentKeyIdentifier = null;
+        $this->currentCert = $csr;
+
+        $this->publicKey = null;
+        $this->publicKey = $this->getPublicKey();
+
+        return $csr;
+    }
+
+    /**
+     * Save CSR request
+     *
+     * @param array $csr
+     * @param int $format optional
+     * @return string
+     */
+    public function saveCSR(array $csr, $format = self::FORMAT_PEM)
+    {
+        if (!is_array($csr) || !isset($csr['certificationRequestInfo'])) {
+            return false;
+        }
+
+        switch (true) {
+            case !($algorithm = $this->subArray($csr, 'certificationRequestInfo/subjectPKInfo/algorithm/algorithm')):
+            case is_object($csr['certificationRequestInfo']['subjectPKInfo']['subjectPublicKey']):
+                break;
+            default:
+                $csr['certificationRequestInfo']['subjectPKInfo'] = new Element(
+                    base64_decode(preg_replace('#-.+-|[\r\n]#', '', $csr['certificationRequestInfo']['subjectPKInfo']['subjectPublicKey']))
+                );
+        }
+
+        $filters = [];
+        $filters['certificationRequestInfo']['subject']['rdnSequence']['value']
+            = ['type' => ASN1::TYPE_UTF8_STRING];
+
+        ASN1::setFilters($filters);
+
+        $this->mapOutDNs($csr, 'certificationRequestInfo/subject/rdnSequence');
+        $this->mapOutAttributes($csr, 'certificationRequestInfo/attributes');
+        $csr = ASN1::encodeDER($csr, Maps\CertificationRequest::MAP);
+
+        switch ($format) {
+            case self::FORMAT_DER:
+                return $csr;
+            // case self::FORMAT_PEM:
+            default:
+                return "-----BEGIN CERTIFICATE REQUEST-----\r\n" . chunk_split(Strings::base64_encode($csr), 64) . '-----END CERTIFICATE REQUEST-----';
+        }
+    }
+
+    /**
+     * Load a SPKAC CSR
+     *
+     * SPKAC's are produced by the HTML5 keygen element:
+     *
+     * https://developer.mozilla.org/en-US/docs/HTML/Element/keygen
+     *
+     * @param string $spkac
+     * @return mixed
+     */
+    public function loadSPKAC($spkac)
+    {
+        if (is_array($spkac) && isset($spkac['publicKeyAndChallenge'])) {
+            unset($this->currentCert);
+            unset($this->currentKeyIdentifier);
+            unset($this->signatureSubject);
+            $this->currentCert = $spkac;
+            return $spkac;
+        }
+
+        // see http://www.w3.org/html/wg/drafts/html/master/forms.html#signedpublickeyandchallenge
+
+        // OpenSSL produces SPKAC's that are preceded by the string SPKAC=
+        $temp = preg_replace('#(?:SPKAC=)|[ \r\n\\\]#', '', $spkac);
+        $temp = preg_match('#^[a-zA-Z\d/+]*={0,2}$#', $temp) ? Strings::base64_decode($temp) : false;
+        if ($temp != false) {
+            $spkac = $temp;
+        }
+        $orig = $spkac;
+
+        if ($spkac === false) {
+            $this->currentCert = false;
+            return false;
+        }
+
+        $decoded = ASN1::decodeBER($spkac);
+
+        if (!$decoded) {
+            $this->currentCert = false;
+            return false;
+        }
+
+        $spkac = ASN1::asn1map($decoded[0], Maps\SignedPublicKeyAndChallenge::MAP);
+
+        if (!isset($spkac) || !is_array($spkac)) {
+            $this->currentCert = false;
+            return false;
+        }
+
+        $this->signatureSubject = substr($orig, $decoded[0]['content'][0]['start'], $decoded[0]['content'][0]['length']);
+
+        $key = $spkac['publicKeyAndChallenge']['spki'];
+        $key = ASN1::encodeDER($key, Maps\SubjectPublicKeyInfo::MAP);
+        $spkac['publicKeyAndChallenge']['spki']['subjectPublicKey'] =
+            "-----BEGIN PUBLIC KEY-----\r\n" .
+            chunk_split(base64_encode($key), 64) .
+            "-----END PUBLIC KEY-----";
+
+        $this->currentKeyIdentifier = null;
+        $this->currentCert = $spkac;
+
+        $this->publicKey = null;
+        $this->publicKey = $this->getPublicKey();
+
+        return $spkac;
+    }
+
+    /**
+     * Save a SPKAC CSR request
+     *
+     * @param array $spkac
+     * @param int $format optional
+     * @return string
+     */
+    public function saveSPKAC(array $spkac, $format = self::FORMAT_PEM)
+    {
+        if (!is_array($spkac) || !isset($spkac['publicKeyAndChallenge'])) {
+            return false;
+        }
+
+        $algorithm = $this->subArray($spkac, 'publicKeyAndChallenge/spki/algorithm/algorithm');
+        switch (true) {
+            case !$algorithm:
+            case is_object($spkac['publicKeyAndChallenge']['spki']['subjectPublicKey']):
+                break;
+            default:
+                $spkac['publicKeyAndChallenge']['spki'] = new Element(
+                    base64_decode(preg_replace('#-.+-|[\r\n]#', '', $spkac['publicKeyAndChallenge']['spki']['subjectPublicKey']))
+                );
+        }
+
+        $spkac = ASN1::encodeDER($spkac, Maps\SignedPublicKeyAndChallenge::MAP);
+
+        switch ($format) {
+            case self::FORMAT_DER:
+                return $spkac;
+            // case self::FORMAT_PEM:
+            default:
+                // OpenSSL's implementation of SPKAC requires the SPKAC be preceded by SPKAC= and since there are pretty much
+                // no other SPKAC decoders phpseclib will use that same format
+                return 'SPKAC=' . Strings::base64_encode($spkac);
+        }
+    }
+
+    /**
+     * Load a Certificate Revocation List
+     *
+     * @param string $crl
+     * @param int $mode
+     * @return mixed
+     */
+    public function loadCRL($crl, $mode = self::FORMAT_AUTO_DETECT)
+    {
+        if (is_array($crl) && isset($crl['tbsCertList'])) {
+            $this->currentCert = $crl;
+            unset($this->signatureSubject);
+            return $crl;
+        }
+
+        if ($mode != self::FORMAT_DER) {
+            $newcrl = ASN1::extractBER($crl);
+            if ($mode == self::FORMAT_PEM && $crl == $newcrl) {
+                return false;
+            }
+            $crl = $newcrl;
+        }
+        $orig = $crl;
+
+        if ($crl === false) {
+            $this->currentCert = false;
+            return false;
+        }
+
+        $decoded = ASN1::decodeBER($crl);
+
+        if (!$decoded) {
+            $this->currentCert = false;
+            return false;
+        }
+
+        $crl = ASN1::asn1map($decoded[0], Maps\CertificateList::MAP);
+        if (!isset($crl) || $crl === false) {
+            $this->currentCert = false;
+            return false;
+        }
+
+        $this->signatureSubject = substr($orig, $decoded[0]['content'][0]['start'], $decoded[0]['content'][0]['length']);
+
+        $this->mapInDNs($crl, 'tbsCertList/issuer/rdnSequence');
+        if ($this->isSubArrayValid($crl, 'tbsCertList/crlExtensions')) {
+            $this->mapInExtensions($crl, 'tbsCertList/crlExtensions');
+        }
+        if ($this->isSubArrayValid($crl, 'tbsCertList/revokedCertificates')) {
+            $rclist_ref = &$this->subArrayUnchecked($crl, 'tbsCertList/revokedCertificates');
+            if ($rclist_ref) {
+                $rclist = $crl['tbsCertList']['revokedCertificates'];
+                foreach ($rclist as $i => $extension) {
+                    if ($this->isSubArrayValid($rclist, "$i/crlEntryExtensions")) {
+                        $this->mapInExtensions($rclist_ref, "$i/crlEntryExtensions");
+                    }
+                }
+            }
+        }
+
+        $this->currentKeyIdentifier = null;
+        $this->currentCert = $crl;
+
+        return $crl;
+    }
+
+    /**
+     * Save Certificate Revocation List.
+     *
+     * @param array $crl
+     * @param int $format optional
+     * @return string
+     */
+    public function saveCRL(array $crl, $format = self::FORMAT_PEM)
+    {
+        if (!is_array($crl) || !isset($crl['tbsCertList'])) {
+            return false;
+        }
+
+        $filters = [];
+        $filters['tbsCertList']['issuer']['rdnSequence']['value']
+            = ['type' => ASN1::TYPE_UTF8_STRING];
+        $filters['tbsCertList']['signature']['parameters']
+            = ['type' => ASN1::TYPE_UTF8_STRING];
+        $filters['signatureAlgorithm']['parameters']
+            = ['type' => ASN1::TYPE_UTF8_STRING];
+
+        if (empty($crl['tbsCertList']['signature']['parameters'])) {
+            $filters['tbsCertList']['signature']['parameters']
+                = ['type' => ASN1::TYPE_NULL];
+        }
+
+        if (empty($crl['signatureAlgorithm']['parameters'])) {
+            $filters['signatureAlgorithm']['parameters']
+                = ['type' => ASN1::TYPE_NULL];
+        }
+
+        ASN1::setFilters($filters);
+
+        $this->mapOutDNs($crl, 'tbsCertList/issuer/rdnSequence');
+        $this->mapOutExtensions($crl, 'tbsCertList/crlExtensions');
+        $rclist = &$this->subArray($crl, 'tbsCertList/revokedCertificates');
+        if (is_array($rclist)) {
+            foreach ($rclist as $i => $extension) {
+                $this->mapOutExtensions($rclist, "$i/crlEntryExtensions");
+            }
+        }
+
+        $crl = ASN1::encodeDER($crl, Maps\CertificateList::MAP);
+
+        switch ($format) {
+            case self::FORMAT_DER:
+                return $crl;
+            // case self::FORMAT_PEM:
+            default:
+                return "-----BEGIN X509 CRL-----\r\n" . chunk_split(Strings::base64_encode($crl), 64) . '-----END X509 CRL-----';
+        }
+    }
+
+    /**
+     * Helper function to build a time field according to RFC 3280 section
+     *  - 4.1.2.5 Validity
+     *  - 5.1.2.4 This Update
+     *  - 5.1.2.5 Next Update
+     *  - 5.1.2.6 Revoked Certificates
+     * by choosing utcTime iff year of date given is before 2050 and generalTime else.
+     *
+     * @param string $date in format date('D, d M Y H:i:s O')
+     * @return array|Element
+     */
+    private function timeField($date)
+    {
+        if ($date instanceof Element) {
+            return $date;
+        }
+        $dateObj = new \DateTimeImmutable($date, new \DateTimeZone('GMT'));
+        $year = $dateObj->format('Y'); // the same way ASN1.php parses this
+        if ($year < 2050) {
+            return ['utcTime' => $date];
+        } else {
+            return ['generalTime' => $date];
+        }
+    }
+
+    /**
+     * Sign an X.509 certificate
+     *
+     * $issuer's private key needs to be loaded.
+     * $subject can be either an existing X.509 cert (if you want to resign it),
+     * a CSR or something with the DN and public key explicitly set.
+     *
+     * @return mixed
+     */
+    public function sign(X509 $issuer, X509 $subject)
+    {
+        if (!is_object($issuer->privateKey) || empty($issuer->dn)) {
+            return false;
+        }
+
+        if (isset($subject->publicKey) && !($subjectPublicKey = $subject->formatSubjectPublicKey())) {
+            return false;
+        }
+
+        $currentCert = isset($this->currentCert) ? $this->currentCert : null;
+        $signatureSubject = isset($this->signatureSubject) ? $this->signatureSubject : null;
+        $signatureAlgorithm = self::identifySignatureAlgorithm($issuer->privateKey);
+
+        if (isset($subject->currentCert) && is_array($subject->currentCert) && isset($subject->currentCert['tbsCertificate'])) {
+            $this->currentCert = $subject->currentCert;
+            $this->currentCert['tbsCertificate']['signature'] = $signatureAlgorithm;
+            $this->currentCert['signatureAlgorithm'] = $signatureAlgorithm;
+
+            if (!empty($this->startDate)) {
+                $this->currentCert['tbsCertificate']['validity']['notBefore'] = $this->timeField($this->startDate);
+            }
+            if (!empty($this->endDate)) {
+                $this->currentCert['tbsCertificate']['validity']['notAfter'] = $this->timeField($this->endDate);
+            }
+            if (!empty($this->serialNumber)) {
+                $this->currentCert['tbsCertificate']['serialNumber'] = $this->serialNumber;
+            }
+            if (!empty($subject->dn)) {
+                $this->currentCert['tbsCertificate']['subject'] = $subject->dn;
+            }
+            if (!empty($subject->publicKey)) {
+                $this->currentCert['tbsCertificate']['subjectPublicKeyInfo'] = $subjectPublicKey;
+            }
+            $this->removeExtension('id-ce-authorityKeyIdentifier');
+            if (isset($subject->domains)) {
+                $this->removeExtension('id-ce-subjectAltName');
+            }
+        } elseif (isset($subject->currentCert) && is_array($subject->currentCert) && isset($subject->currentCert['tbsCertList'])) {
+            return false;
+        } else {
+            if (!isset($subject->publicKey)) {
+                return false;
+            }
+
+            $startDate = new \DateTimeImmutable('now', new \DateTimeZone(@date_default_timezone_get()));
+            $startDate = !empty($this->startDate) ? $this->startDate : $startDate->format('D, d M Y H:i:s O');
+
+            $endDate = new \DateTimeImmutable('+1 year', new \DateTimeZone(@date_default_timezone_get()));
+            $endDate = !empty($this->endDate) ? $this->endDate : $endDate->format('D, d M Y H:i:s O');
+
+            /* "The serial number MUST be a positive integer"
+               "Conforming CAs MUST NOT use serialNumber values longer than 20 octets."
+                -- https://tools.ietf.org/html/rfc5280#section-4.1.2.2
+
+               for the integer to be positive the leading bit needs to be 0 hence the
+               application of a bitmap
+            */
+            $serialNumber = !empty($this->serialNumber) ?
+                $this->serialNumber :
+                new BigInteger(Random::string(20) & ("\x7F" . str_repeat("\xFF", 19)), 256);
+
+            $this->currentCert = [
+                'tbsCertificate' =>
+                    [
+                        'version' => 'v3',
+                        'serialNumber' => $serialNumber, // $this->setSerialNumber()
+                        'signature' => $signatureAlgorithm,
+                        'issuer' => false, // this is going to be overwritten later
+                        'validity' => [
+                            'notBefore' => $this->timeField($startDate), // $this->setStartDate()
+                            'notAfter' => $this->timeField($endDate)   // $this->setEndDate()
+                        ],
+                        'subject' => $subject->dn,
+                        'subjectPublicKeyInfo' => $subjectPublicKey
+                    ],
+                    'signatureAlgorithm' => $signatureAlgorithm,
+                    'signature'          => false // this is going to be overwritten later
+            ];
+
+            // Copy extensions from CSR.
+            $csrexts = $subject->getAttribute('pkcs-9-at-extensionRequest', 0);
+
+            if (!empty($csrexts)) {
+                $this->currentCert['tbsCertificate']['extensions'] = $csrexts;
+            }
+        }
+
+        $this->currentCert['tbsCertificate']['issuer'] = $issuer->dn;
+
+        if (isset($issuer->currentKeyIdentifier)) {
+            $this->setExtension('id-ce-authorityKeyIdentifier', [
+                    //'authorityCertIssuer' => array(
+                    //    array(
+                    //        'directoryName' => $issuer->dn
+                    //    )
+                    //),
+                    'keyIdentifier' => $issuer->currentKeyIdentifier
+                ]);
+            //$extensions = &$this->currentCert['tbsCertificate']['extensions'];
+            //if (isset($issuer->serialNumber)) {
+            //    $extensions[count($extensions) - 1]['authorityCertSerialNumber'] = $issuer->serialNumber;
+            //}
+            //unset($extensions);
+        }
+
+        if (isset($subject->currentKeyIdentifier)) {
+            $this->setExtension('id-ce-subjectKeyIdentifier', $subject->currentKeyIdentifier);
+        }
+
+        $altName = [];
+
+        if (isset($subject->domains) && count($subject->domains)) {
+            $altName = array_map(['\phpseclib3\File\X509', 'dnsName'], $subject->domains);
+        }
+
+        if (isset($subject->ipAddresses) && count($subject->ipAddresses)) {
+            // should an IP address appear as the CN if no domain name is specified? idk
+            //$ips = count($subject->domains) ? $subject->ipAddresses : array_slice($subject->ipAddresses, 1);
+            $ipAddresses = [];
+            foreach ($subject->ipAddresses as $ipAddress) {
+                $encoded = $subject->ipAddress($ipAddress);
+                if ($encoded !== false) {
+                    $ipAddresses[] = $encoded;
+                }
+            }
+            if (count($ipAddresses)) {
+                $altName = array_merge($altName, $ipAddresses);
+            }
+        }
+
+        if (!empty($altName)) {
+            $this->setExtension('id-ce-subjectAltName', $altName);
+        }
+
+        if ($this->caFlag) {
+            $keyUsage = $this->getExtension('id-ce-keyUsage');
+            if (!$keyUsage) {
+                $keyUsage = [];
+            }
+
+            $this->setExtension(
+                'id-ce-keyUsage',
+                array_values(array_unique(array_merge($keyUsage, ['cRLSign', 'keyCertSign'])))
+            );
+
+            $basicConstraints = $this->getExtension('id-ce-basicConstraints');
+            if (!$basicConstraints) {
+                $basicConstraints = [];
+            }
+
+            $this->setExtension(
+                'id-ce-basicConstraints',
+                array_merge(['cA' => true], $basicConstraints),
+                true
+            );
+
+            if (!isset($subject->currentKeyIdentifier)) {
+                $this->setExtension('id-ce-subjectKeyIdentifier', $this->computeKeyIdentifier($this->currentCert), false, false);
+            }
+        }
+
+        // resync $this->signatureSubject
+        // save $tbsCertificate in case there are any \phpseclib3\File\ASN1\Element objects in it
+        $tbsCertificate = $this->currentCert['tbsCertificate'];
+        $this->loadX509($this->saveX509($this->currentCert));
+
+        $result = $this->currentCert;
+        $this->currentCert['signature'] = $result['signature'] = "\0" . $issuer->privateKey->sign($this->signatureSubject);
+        $result['tbsCertificate'] = $tbsCertificate;
+
+        $this->currentCert = $currentCert;
+        $this->signatureSubject = $signatureSubject;
+
+        return $result;
+    }
+
+    /**
+     * Sign a CSR
+     *
+     * @return mixed
+     */
+    public function signCSR()
+    {
+        if (!is_object($this->privateKey) || empty($this->dn)) {
+            return false;
+        }
+
+        $origPublicKey = $this->publicKey;
+        $this->publicKey = $this->privateKey->getPublicKey();
+        $publicKey = $this->formatSubjectPublicKey();
+        $this->publicKey = $origPublicKey;
+
+        $currentCert = isset($this->currentCert) ? $this->currentCert : null;
+        $signatureSubject = isset($this->signatureSubject) ? $this->signatureSubject : null;
+        $signatureAlgorithm = self::identifySignatureAlgorithm($this->privateKey);
+
+        if (isset($this->currentCert) && is_array($this->currentCert) && isset($this->currentCert['certificationRequestInfo'])) {
+            $this->currentCert['signatureAlgorithm'] = $signatureAlgorithm;
+            if (!empty($this->dn)) {
+                $this->currentCert['certificationRequestInfo']['subject'] = $this->dn;
+            }
+            $this->currentCert['certificationRequestInfo']['subjectPKInfo'] = $publicKey;
+        } else {
+            $this->currentCert = [
+                'certificationRequestInfo' =>
+                    [
+                        'version' => 'v1',
+                        'subject' => $this->dn,
+                        'subjectPKInfo' => $publicKey
+                    ],
+                    'signatureAlgorithm' => $signatureAlgorithm,
+                    'signature'          => false // this is going to be overwritten later
+            ];
+        }
+
+        // resync $this->signatureSubject
+        // save $certificationRequestInfo in case there are any \phpseclib3\File\ASN1\Element objects in it
+        $certificationRequestInfo = $this->currentCert['certificationRequestInfo'];
+        $this->loadCSR($this->saveCSR($this->currentCert));
+
+        $result = $this->currentCert;
+        $this->currentCert['signature'] = $result['signature'] = "\0" . $this->privateKey->sign($this->signatureSubject);
+        $result['certificationRequestInfo'] = $certificationRequestInfo;
+
+        $this->currentCert = $currentCert;
+        $this->signatureSubject = $signatureSubject;
+
+        return $result;
+    }
+
+    /**
+     * Sign a SPKAC
+     *
+     * @return mixed
+     */
+    public function signSPKAC()
+    {
+        if (!is_object($this->privateKey)) {
+            return false;
+        }
+
+        $origPublicKey = $this->publicKey;
+        $this->publicKey = $this->privateKey->getPublicKey();
+        $publicKey = $this->formatSubjectPublicKey();
+        $this->publicKey = $origPublicKey;
+
+        $currentCert = isset($this->currentCert) ? $this->currentCert : null;
+        $signatureSubject = isset($this->signatureSubject) ? $this->signatureSubject : null;
+        $signatureAlgorithm = self::identifySignatureAlgorithm($this->privateKey);
+
+        // re-signing a SPKAC seems silly but since everything else supports re-signing why not?
+        if (isset($this->currentCert) && is_array($this->currentCert) && isset($this->currentCert['publicKeyAndChallenge'])) {
+            $this->currentCert['signatureAlgorithm'] = $signatureAlgorithm;
+            $this->currentCert['publicKeyAndChallenge']['spki'] = $publicKey;
+            if (!empty($this->challenge)) {
+                // the bitwise AND ensures that the output is a valid IA5String
+                $this->currentCert['publicKeyAndChallenge']['challenge'] = $this->challenge & str_repeat("\x7F", strlen($this->challenge));
+            }
+        } else {
+            $this->currentCert = [
+                'publicKeyAndChallenge' =>
+                    [
+                        'spki' => $publicKey,
+                        // quoting <https://developer.mozilla.org/en-US/docs/Web/HTML/Element/keygen>,
+                        // "A challenge string that is submitted along with the public key. Defaults to an empty string if not specified."
+                        // both Firefox and OpenSSL ("openssl spkac -key private.key") behave this way
+                        // we could alternatively do this instead if we ignored the specs:
+                        // Random::string(8) & str_repeat("\x7F", 8)
+                        'challenge' => !empty($this->challenge) ? $this->challenge : ''
+                    ],
+                    'signatureAlgorithm' => $signatureAlgorithm,
+                    'signature'          => false // this is going to be overwritten later
+            ];
+        }
+
+        // resync $this->signatureSubject
+        // save $publicKeyAndChallenge in case there are any \phpseclib3\File\ASN1\Element objects in it
+        $publicKeyAndChallenge = $this->currentCert['publicKeyAndChallenge'];
+        $this->loadSPKAC($this->saveSPKAC($this->currentCert));
+
+        $result = $this->currentCert;
+        $this->currentCert['signature'] = $result['signature'] = "\0" . $this->privateKey->sign($this->signatureSubject);
+        $result['publicKeyAndChallenge'] = $publicKeyAndChallenge;
+
+        $this->currentCert = $currentCert;
+        $this->signatureSubject = $signatureSubject;
+
+        return $result;
+    }
+
+    /**
+     * Sign a CRL
+     *
+     * $issuer's private key needs to be loaded.
+     *
+     * @return mixed
+     */
+    public function signCRL(X509 $issuer, X509 $crl)
+    {
+        if (!is_object($issuer->privateKey) || empty($issuer->dn)) {
+            return false;
+        }
+
+        $currentCert = isset($this->currentCert) ? $this->currentCert : null;
+        $signatureSubject = isset($this->signatureSubject) ? $this->signatureSubject : null;
+        $signatureAlgorithm = self::identifySignatureAlgorithm($issuer->privateKey);
+
+        $thisUpdate = new \DateTimeImmutable('now', new \DateTimeZone(@date_default_timezone_get()));
+        $thisUpdate = !empty($this->startDate) ? $this->startDate : $thisUpdate->format('D, d M Y H:i:s O');
+
+        if (isset($crl->currentCert) && is_array($crl->currentCert) && isset($crl->currentCert['tbsCertList'])) {
+            $this->currentCert = $crl->currentCert;
+            $this->currentCert['tbsCertList']['signature'] = $signatureAlgorithm;
+            $this->currentCert['signatureAlgorithm'] = $signatureAlgorithm;
+        } else {
+            $this->currentCert = [
+                'tbsCertList' =>
+                    [
+                        'version' => 'v2',
+                        'signature' => $signatureAlgorithm,
+                        'issuer' => false, // this is going to be overwritten later
+                        'thisUpdate' => $this->timeField($thisUpdate) // $this->setStartDate()
+                    ],
+                    'signatureAlgorithm' => $signatureAlgorithm,
+                    'signature'          => false // this is going to be overwritten later
+            ];
+        }
+
+        $tbsCertList = &$this->currentCert['tbsCertList'];
+        $tbsCertList['issuer'] = $issuer->dn;
+        $tbsCertList['thisUpdate'] = $this->timeField($thisUpdate);
+
+        if (!empty($this->endDate)) {
+            $tbsCertList['nextUpdate'] = $this->timeField($this->endDate); // $this->setEndDate()
+        } else {
+            unset($tbsCertList['nextUpdate']);
+        }
+
+        if (!empty($this->serialNumber)) {
+            $crlNumber = $this->serialNumber;
+        } else {
+            $crlNumber = $this->getExtension('id-ce-cRLNumber');
+            // "The CRL number is a non-critical CRL extension that conveys a
+            //  monotonically increasing sequence number for a given CRL scope and
+            //  CRL issuer.  This extension allows users to easily determine when a
+            //  particular CRL supersedes another CRL."
+            // -- https://tools.ietf.org/html/rfc5280#section-5.2.3
+            $crlNumber = $crlNumber !== false ? $crlNumber->add(new BigInteger(1)) : null;
+        }
+
+        $this->removeExtension('id-ce-authorityKeyIdentifier');
+        $this->removeExtension('id-ce-issuerAltName');
+
+        // Be sure version >= v2 if some extension found.
+        $version = isset($tbsCertList['version']) ? $tbsCertList['version'] : 0;
+        if (!$version) {
+            if (!empty($tbsCertList['crlExtensions'])) {
+                $version = 1; // v2.
+            } elseif (!empty($tbsCertList['revokedCertificates'])) {
+                foreach ($tbsCertList['revokedCertificates'] as $cert) {
+                    if (!empty($cert['crlEntryExtensions'])) {
+                        $version = 1; // v2.
+                    }
+                }
+            }
+
+            if ($version) {
+                $tbsCertList['version'] = $version;
+            }
+        }
+
+        // Store additional extensions.
+        if (!empty($tbsCertList['version'])) { // At least v2.
+            if (!empty($crlNumber)) {
+                $this->setExtension('id-ce-cRLNumber', $crlNumber);
+            }
+
+            if (isset($issuer->currentKeyIdentifier)) {
+                $this->setExtension('id-ce-authorityKeyIdentifier', [
+                        //'authorityCertIssuer' => array(
+                        //    ]
+                        //        'directoryName' => $issuer->dn
+                        //    ]
+                        //),
+                        'keyIdentifier' => $issuer->currentKeyIdentifier
+                    ]);
+                //$extensions = &$tbsCertList['crlExtensions'];
+                //if (isset($issuer->serialNumber)) {
+                //    $extensions[count($extensions) - 1]['authorityCertSerialNumber'] = $issuer->serialNumber;
+                //}
+                //unset($extensions);
+            }
+
+            $issuerAltName = $this->getExtension('id-ce-subjectAltName', $issuer->currentCert);
+
+            if ($issuerAltName !== false) {
+                $this->setExtension('id-ce-issuerAltName', $issuerAltName);
+            }
+        }
+
+        if (empty($tbsCertList['revokedCertificates'])) {
+            unset($tbsCertList['revokedCertificates']);
+        }
+
+        unset($tbsCertList);
+
+        // resync $this->signatureSubject
+        // save $tbsCertList in case there are any \phpseclib3\File\ASN1\Element objects in it
+        $tbsCertList = $this->currentCert['tbsCertList'];
+        $this->loadCRL($this->saveCRL($this->currentCert));
+
+        $result = $this->currentCert;
+        $this->currentCert['signature'] = $result['signature'] = "\0" . $issuer->privateKey->sign($this->signatureSubject);
+        $result['tbsCertList'] = $tbsCertList;
+
+        $this->currentCert = $currentCert;
+        $this->signatureSubject = $signatureSubject;
+
+        return $result;
+    }
+
+    /**
+     * Identify signature algorithm from key settings
+     *
+     * @param PrivateKey $key
+     * @throws \phpseclib3\Exception\UnsupportedAlgorithmException if the algorithm is unsupported
+     * @return array
+     */
+    private static function identifySignatureAlgorithm(PrivateKey $key)
+    {
+        if ($key instanceof RSA) {
+            if ($key->getPadding() & RSA::SIGNATURE_PSS) {
+                $r = PSS::load($key->withPassword()->toString('PSS'));
+                return [
+                    'algorithm' => 'id-RSASSA-PSS',
+                    'parameters' => PSS::savePSSParams($r)
+                ];
+            }
+            switch ($key->getHash()) {
+                case 'md2':
+                case 'md5':
+                case 'sha1':
+                case 'sha224':
+                case 'sha256':
+                case 'sha384':
+                case 'sha512':
+                    return ['algorithm' => $key->getHash() . 'WithRSAEncryption'];
+            }
+            throw new UnsupportedAlgorithmException('The only supported hash algorithms for RSA are: md2, md5, sha1, sha224, sha256, sha384, sha512');
+        }
+
+        if ($key instanceof DSA) {
+            switch ($key->getHash()) {
+                case 'sha1':
+                case 'sha224':
+                case 'sha256':
+                    return ['algorithm' => 'id-dsa-with-' . $key->getHash()];
+            }
+            throw new UnsupportedAlgorithmException('The only supported hash algorithms for DSA are: sha1, sha224, sha256');
+        }
+
+        if ($key instanceof EC) {
+            switch ($key->getCurve()) {
+                case 'Ed25519':
+                case 'Ed448':
+                    return ['algorithm' => 'id-' . $key->getCurve()];
+            }
+            switch ($key->getHash()) {
+                case 'sha1':
+                case 'sha224':
+                case 'sha256':
+                case 'sha384':
+                case 'sha512':
+                    return ['algorithm' => 'ecdsa-with-' . strtoupper($key->getHash())];
+            }
+            throw new UnsupportedAlgorithmException('The only supported hash algorithms for EC are: sha1, sha224, sha256, sha384, sha512');
+        }
+
+        throw new UnsupportedAlgorithmException('The only supported public key classes are: RSA, DSA, EC');
+    }
+
+    /**
+     * Set certificate start date
+     *
+     * @param \DateTimeInterface|string $date
+     */
+    public function setStartDate($date)
+    {
+        if (!is_object($date) || !($date instanceof \DateTimeInterface)) {
+            $date = new \DateTimeImmutable($date, new \DateTimeZone(@date_default_timezone_get()));
+        }
+
+        $this->startDate = $date->format('D, d M Y H:i:s O');
+    }
+
+    /**
+     * Set certificate end date
+     *
+     * @param \DateTimeInterface|string $date
+     */
+    public function setEndDate($date)
+    {
+        /*
+          To indicate that a certificate has no well-defined expiration date,
+          the notAfter SHOULD be assigned the GeneralizedTime value of
+          99991231235959Z.
+
+          -- http://tools.ietf.org/html/rfc5280#section-4.1.2.5
+        */
+        if (is_string($date) && strtolower($date) === 'lifetime') {
+            $temp = '99991231235959Z';
+            $temp = chr(ASN1::TYPE_GENERALIZED_TIME) . ASN1::encodeLength(strlen($temp)) . $temp;
+            $this->endDate = new Element($temp);
+        } else {
+            if (!is_object($date) || !($date instanceof \DateTimeInterface)) {
+                $date = new \DateTimeImmutable($date, new \DateTimeZone(@date_default_timezone_get()));
+            }
+
+            $this->endDate = $date->format('D, d M Y H:i:s O');
+        }
+    }
+
+    /**
+     * Set Serial Number
+     *
+     * @param string $serial
+     * @param int $base optional
+     */
+    public function setSerialNumber($serial, $base = -256)
+    {
+        $this->serialNumber = new BigInteger($serial, $base);
+    }
+
+    /**
+     * Turns the certificate into a certificate authority
+     *
+     */
+    public function makeCA()
+    {
+        $this->caFlag = true;
+    }
+
+    /**
+     * Check for validity of subarray
+     *
+     * This is intended for use in conjunction with _subArrayUnchecked(),
+     * implementing the checks included in _subArray() but without copying
+     * a potentially large array by passing its reference by-value to is_array().
+     *
+     * @param array $root
+     * @param string $path
+     * @return boolean
+     */
+    private function isSubArrayValid(array $root, $path)
+    {
+        if (!is_array($root)) {
+            return false;
+        }
+
+        foreach (explode('/', $path) as $i) {
+            if (!is_array($root)) {
+                return false;
+            }
+
+            if (!isset($root[$i])) {
+                return true;
+            }
+
+            $root = $root[$i];
+        }
+
+        return true;
+    }
+
+    /**
+     * Get a reference to a subarray
+     *
+     * This variant of _subArray() does no is_array() checking,
+     * so $root should be checked with _isSubArrayValid() first.
+     *
+     * This is here for performance reasons:
+     * Passing a reference (i.e. $root) by-value (i.e. to is_array())
+     * creates a copy. If $root is an especially large array, this is expensive.
+     *
+     * @param array $root
+     * @param string $path  absolute path with / as component separator
+     * @param bool $create optional
+     * @return array|false
+     */
+    private function &subArrayUnchecked(array &$root, $path, $create = false)
+    {
+        $false = false;
+
+        foreach (explode('/', $path) as $i) {
+            if (!isset($root[$i])) {
+                if (!$create) {
+                    return $false;
+                }
+
+                $root[$i] = [];
+            }
+
+            $root = &$root[$i];
+        }
+
+        return $root;
+    }
+
+    /**
+     * Get a reference to a subarray
+     *
+     * @param array $root
+     * @param string $path  absolute path with / as component separator
+     * @param bool $create optional
+     * @return array|false
+     */
+    private function &subArray(array &$root = null, $path, $create = false)
+    {
+        $false = false;
+
+        if (!is_array($root)) {
+            return $false;
+        }
+
+        foreach (explode('/', $path) as $i) {
+            if (!is_array($root)) {
+                return $false;
+            }
+
+            if (!isset($root[$i])) {
+                if (!$create) {
+                    return $false;
+                }
+
+                $root[$i] = [];
+            }
+
+            $root = &$root[$i];
+        }
+
+        return $root;
+    }
+
+    /**
+     * Get a reference to an extension subarray
+     *
+     * @param array $root
+     * @param string $path optional absolute path with / as component separator
+     * @param bool $create optional
+     * @return array|false
+     */
+    private function &extensions(array &$root = null, $path = null, $create = false)
+    {
+        if (!isset($root)) {
+            $root = $this->currentCert;
+        }
+
+        switch (true) {
+            case !empty($path):
+            case !is_array($root):
+                break;
+            case isset($root['tbsCertificate']):
+                $path = 'tbsCertificate/extensions';
+                break;
+            case isset($root['tbsCertList']):
+                $path = 'tbsCertList/crlExtensions';
+                break;
+            case isset($root['certificationRequestInfo']):
+                $pth = 'certificationRequestInfo/attributes';
+                $attributes = &$this->subArray($root, $pth, $create);
+
+                if (is_array($attributes)) {
+                    foreach ($attributes as $key => $value) {
+                        if ($value['type'] == 'pkcs-9-at-extensionRequest') {
+                            $path = "$pth/$key/value/0";
+                            break 2;
+                        }
+                    }
+                    if ($create) {
+                        $key = count($attributes);
+                        $attributes[] = ['type' => 'pkcs-9-at-extensionRequest', 'value' => []];
+                        $path = "$pth/$key/value/0";
+                    }
+                }
+                break;
+        }
+
+        $extensions = &$this->subArray($root, $path, $create);
+
+        if (!is_array($extensions)) {
+            $false = false;
+            return $false;
+        }
+
+        return $extensions;
+    }
+
+    /**
+     * Remove an Extension
+     *
+     * @param string $id
+     * @param string $path optional
+     * @return bool
+     */
+    private function removeExtensionHelper($id, $path = null)
+    {
+        $extensions = &$this->extensions($this->currentCert, $path);
+
+        if (!is_array($extensions)) {
+            return false;
+        }
+
+        $result = false;
+        foreach ($extensions as $key => $value) {
+            if ($value['extnId'] == $id) {
+                unset($extensions[$key]);
+                $result = true;
+            }
+        }
+
+        $extensions = array_values($extensions);
+        // fix for https://bugs.php.net/75433 affecting PHP 7.2
+        if (!isset($extensions[0])) {
+            $extensions = array_splice($extensions, 0, 0);
+        }
+        return $result;
+    }
+
+    /**
+     * Get an Extension
+     *
+     * Returns the extension if it exists and false if not
+     *
+     * @param string $id
+     * @param array $cert optional
+     * @param string $path optional
+     * @return mixed
+     */
+    private function getExtensionHelper($id, array $cert = null, $path = null)
+    {
+        $extensions = $this->extensions($cert, $path);
+
+        if (!is_array($extensions)) {
+            return false;
+        }
+
+        foreach ($extensions as $key => $value) {
+            if ($value['extnId'] == $id) {
+                return $value['extnValue'];
+            }
+        }
+
+        return false;
+    }
+
+    /**
+     * Returns a list of all extensions in use
+     *
+     * @param array $cert optional
+     * @param string $path optional
+     * @return array
+     */
+    private function getExtensionsHelper(array $cert = null, $path = null)
+    {
+        $exts = $this->extensions($cert, $path);
+        $extensions = [];
+
+        if (is_array($exts)) {
+            foreach ($exts as $extension) {
+                $extensions[] = $extension['extnId'];
+            }
+        }
+
+        return $extensions;
+    }
+
+    /**
+     * Set an Extension
+     *
+     * @param string $id
+     * @param mixed $value
+     * @param bool $critical optional
+     * @param bool $replace optional
+     * @param string $path optional
+     * @return bool
+     */
+    private function setExtensionHelper($id, $value, $critical = false, $replace = true, $path = null)
+    {
+        $extensions = &$this->extensions($this->currentCert, $path, true);
+
+        if (!is_array($extensions)) {
+            return false;
+        }
+
+        $newext = ['extnId'  => $id, 'critical' => $critical, 'extnValue' => $value];
+
+        foreach ($extensions as $key => $value) {
+            if ($value['extnId'] == $id) {
+                if (!$replace) {
+                    return false;
+                }
+
+                $extensions[$key] = $newext;
+                return true;
+            }
+        }
+
+        $extensions[] = $newext;
+        return true;
+    }
+
+    /**
+     * Remove a certificate, CSR or CRL Extension
+     *
+     * @param string $id
+     * @return bool
+     */
+    public function removeExtension($id)
+    {
+        return $this->removeExtensionHelper($id);
+    }
+
+    /**
+     * Get a certificate, CSR or CRL Extension
+     *
+     * Returns the extension if it exists and false if not
+     *
+     * @param string $id
+     * @param array $cert optional
+     * @param string $path
+     * @return mixed
+     */
+    public function getExtension($id, array $cert = null, $path = null)
+    {
+        return $this->getExtensionHelper($id, $cert, $path);
+    }
+
+    /**
+     * Returns a list of all extensions in use in certificate, CSR or CRL
+     *
+     * @param array $cert optional
+     * @param string $path optional
+     * @return array
+     */
+    public function getExtensions(array $cert = null, $path = null)
+    {
+        return $this->getExtensionsHelper($cert, $path);
+    }
+
+    /**
+     * Set a certificate, CSR or CRL Extension
+     *
+     * @param string $id
+     * @param mixed $value
+     * @param bool $critical optional
+     * @param bool $replace optional
+     * @return bool
+     */
+    public function setExtension($id, $value, $critical = false, $replace = true)
+    {
+        return $this->setExtensionHelper($id, $value, $critical, $replace);
+    }
+
+    /**
+     * Remove a CSR attribute.
+     *
+     * @param string $id
+     * @param int $disposition optional
+     * @return bool
+     */
+    public function removeAttribute($id, $disposition = self::ATTR_ALL)
+    {
+        $attributes = &$this->subArray($this->currentCert, 'certificationRequestInfo/attributes');
+
+        if (!is_array($attributes)) {
+            return false;
+        }
+
+        $result = false;
+        foreach ($attributes as $key => $attribute) {
+            if ($attribute['type'] == $id) {
+                $n = count($attribute['value']);
+                switch (true) {
+                    case $disposition == self::ATTR_APPEND:
+                    case $disposition == self::ATTR_REPLACE:
+                        return false;
+                    case $disposition >= $n:
+                        $disposition -= $n;
+                        break;
+                    case $disposition == self::ATTR_ALL:
+                    case $n == 1:
+                        unset($attributes[$key]);
+                        $result = true;
+                        break;
+                    default:
+                        unset($attributes[$key]['value'][$disposition]);
+                        $attributes[$key]['value'] = array_values($attributes[$key]['value']);
+                        $result = true;
+                        break;
+                }
+                if ($result && $disposition != self::ATTR_ALL) {
+                    break;
+                }
+            }
+        }
+
+        $attributes = array_values($attributes);
+        return $result;
+    }
+
+    /**
+     * Get a CSR attribute
+     *
+     * Returns the attribute if it exists and false if not
+     *
+     * @param string $id
+     * @param int $disposition optional
+     * @param array $csr optional
+     * @return mixed
+     */
+    public function getAttribute($id, $disposition = self::ATTR_ALL, array $csr = null)
+    {
+        if (empty($csr)) {
+            $csr = $this->currentCert;
+        }
+
+        $attributes = $this->subArray($csr, 'certificationRequestInfo/attributes');
+
+        if (!is_array($attributes)) {
+            return false;
+        }
+
+        foreach ($attributes as $key => $attribute) {
+            if ($attribute['type'] == $id) {
+                $n = count($attribute['value']);
+                switch (true) {
+                    case $disposition == self::ATTR_APPEND:
+                    case $disposition == self::ATTR_REPLACE:
+                        return false;
+                    case $disposition == self::ATTR_ALL:
+                        return $attribute['value'];
+                    case $disposition >= $n:
+                        $disposition -= $n;
+                        break;
+                    default:
+                        return $attribute['value'][$disposition];
+                }
+            }
+        }
+
+        return false;
+    }
+
+    /**
+     * Returns a list of all CSR attributes in use
+     *
+     * @param array $csr optional
+     * @return array
+     */
+    public function getAttributes(array $csr = null)
+    {
+        if (empty($csr)) {
+            $csr = $this->currentCert;
+        }
+
+        $attributes = $this->subArray($csr, 'certificationRequestInfo/attributes');
+        $attrs = [];
+
+        if (is_array($attributes)) {
+            foreach ($attributes as $attribute) {
+                $attrs[] = $attribute['type'];
+            }
+        }
+
+        return $attrs;
+    }
+
+    /**
+     * Set a CSR attribute
+     *
+     * @param string $id
+     * @param mixed $value
+     * @param int $disposition optional
+     * @return bool
+     */
+    public function setAttribute($id, $value, $disposition = self::ATTR_ALL)
+    {
+        $attributes = &$this->subArray($this->currentCert, 'certificationRequestInfo/attributes', true);
+
+        if (!is_array($attributes)) {
+            return false;
+        }
+
+        switch ($disposition) {
+            case self::ATTR_REPLACE:
+                $disposition = self::ATTR_APPEND;
+                // fall-through
+            case self::ATTR_ALL:
+                $this->removeAttribute($id);
+                break;
+        }
+
+        foreach ($attributes as $key => $attribute) {
+            if ($attribute['type'] == $id) {
+                $n = count($attribute['value']);
+                switch (true) {
+                    case $disposition == self::ATTR_APPEND:
+                        $last = $key;
+                        break;
+                    case $disposition >= $n:
+                        $disposition -= $n;
+                        break;
+                    default:
+                        $attributes[$key]['value'][$disposition] = $value;
+                        return true;
+                }
+            }
+        }
+
+        switch (true) {
+            case $disposition >= 0:
+                return false;
+            case isset($last):
+                $attributes[$last]['value'][] = $value;
+                break;
+            default:
+                $attributes[] = ['type' => $id, 'value' => $disposition == self::ATTR_ALL ? $value : [$value]];
+                break;
+        }
+
+        return true;
+    }
+
+    /**
+     * Sets the subject key identifier
+     *
+     * This is used by the id-ce-authorityKeyIdentifier and the id-ce-subjectKeyIdentifier extensions.
+     *
+     * @param string $value
+     */
+    public function setKeyIdentifier($value)
+    {
+        if (empty($value)) {
+            unset($this->currentKeyIdentifier);
+        } else {
+            $this->currentKeyIdentifier = $value;
+        }
+    }
+
+    /**
+     * Compute a public key identifier.
+     *
+     * Although key identifiers may be set to any unique value, this function
+     * computes key identifiers from public key according to the two
+     * recommended methods (4.2.1.2 RFC 3280).
+     * Highly polymorphic: try to accept all possible forms of key:
+     * - Key object
+     * - \phpseclib3\File\X509 object with public or private key defined
+     * - Certificate or CSR array
+     * - \phpseclib3\File\ASN1\Element object
+     * - PEM or DER string
+     *
+     * @param mixed $key optional
+     * @param int $method optional
+     * @return string binary key identifier
+     */
+    public function computeKeyIdentifier($key = null, $method = 1)
+    {
+        if (is_null($key)) {
+            $key = $this;
+        }
+
+        switch (true) {
+            case is_string($key):
+                break;
+            case is_array($key) && isset($key['tbsCertificate']['subjectPublicKeyInfo']['subjectPublicKey']):
+                return $this->computeKeyIdentifier($key['tbsCertificate']['subjectPublicKeyInfo']['subjectPublicKey'], $method);
+            case is_array($key) && isset($key['certificationRequestInfo']['subjectPKInfo']['subjectPublicKey']):
+                return $this->computeKeyIdentifier($key['certificationRequestInfo']['subjectPKInfo']['subjectPublicKey'], $method);
+            case !is_object($key):
+                return false;
+            case $key instanceof Element:
+                // Assume the element is a bitstring-packed key.
+                $decoded = ASN1::decodeBER($key->element);
+                if (!$decoded) {
+                    return false;
+                }
+                $raw = ASN1::asn1map($decoded[0], ['type' => ASN1::TYPE_BIT_STRING]);
+                if (empty($raw)) {
+                    return false;
+                }
+                // If the key is private, compute identifier from its corresponding public key.
+                $key = PublicKeyLoader::load($raw);
+                if ($key instanceof PrivateKey) {  // If private.
+                    return $this->computeKeyIdentifier($key, $method);
+                }
+                $key = $raw; // Is a public key.
+                break;
+            case $key instanceof X509:
+                if (isset($key->publicKey)) {
+                    return $this->computeKeyIdentifier($key->publicKey, $method);
+                }
+                if (isset($key->privateKey)) {
+                    return $this->computeKeyIdentifier($key->privateKey, $method);
+                }
+                if (isset($key->currentCert['tbsCertificate']) || isset($key->currentCert['certificationRequestInfo'])) {
+                    return $this->computeKeyIdentifier($key->currentCert, $method);
+                }
+                return false;
+            default: // Should be a key object (i.e.: \phpseclib3\Crypt\RSA).
+                $key = $key->getPublicKey();
+                break;
+        }
+
+        // If in PEM format, convert to binary.
+        $key = ASN1::extractBER($key);
+
+        // Now we have the key string: compute its sha-1 sum.
+        $hash = new Hash('sha1');
+        $hash = $hash->hash($key);
+
+        if ($method == 2) {
+            $hash = substr($hash, -8);
+            $hash[0] = chr((ord($hash[0]) & 0x0F) | 0x40);
+        }
+
+        return $hash;
+    }
+
+    /**
+     * Format a public key as appropriate
+     *
+     * @return array|false
+     */
+    private function formatSubjectPublicKey()
+    {
+        $format = $this->publicKey instanceof RSA && ($this->publicKey->getPadding() & RSA::SIGNATURE_PSS) ?
+            'PSS' :
+            'PKCS8';
+
+        $publicKey = base64_decode(preg_replace('#-.+-|[\r\n]#', '', $this->publicKey->toString($format)));
+
+        $decoded = ASN1::decodeBER($publicKey);
+        if (!$decoded) {
+            return false;
+        }
+        $mapped = ASN1::asn1map($decoded[0], Maps\SubjectPublicKeyInfo::MAP);
+        if (!is_array($mapped)) {
+            return false;
+        }
+
+        $mapped['subjectPublicKey'] = $this->publicKey->toString($format);
+
+        return $mapped;
+    }
+
+    /**
+     * Set the domain name's which the cert is to be valid for
+     *
+     * @param mixed ...$domains
+     * @return void
+     */
+    public function setDomain(...$domains)
+    {
+        $this->domains = $domains;
+        $this->removeDNProp('id-at-commonName');
+        $this->setDNProp('id-at-commonName', $this->domains[0]);
+    }
+
+    /**
+     * Set the IP Addresses's which the cert is to be valid for
+     *
+     * @param mixed[] ...$ipAddresses
+     */
+    public function setIPAddress(...$ipAddresses)
+    {
+        $this->ipAddresses = $ipAddresses;
+        /*
+        if (!isset($this->domains)) {
+            $this->removeDNProp('id-at-commonName');
+            $this->setDNProp('id-at-commonName', $this->ipAddresses[0]);
+        }
+        */
+    }
+
+    /**
+     * Helper function to build domain array
+     *
+     * @param string $domain
+     * @return array
+     */
+    private static function dnsName($domain)
+    {
+        return ['dNSName' => $domain];
+    }
+
+    /**
+     * Helper function to build IP Address array
+     *
+     * (IPv6 is not currently supported)
+     *
+     * @param string $address
+     * @return array
+     */
+    private function iPAddress($address)
+    {
+        return ['iPAddress' => $address];
+    }
+
+    /**
+     * Get the index of a revoked certificate.
+     *
+     * @param array $rclist
+     * @param string $serial
+     * @param bool $create optional
+     * @return int|false
+     */
+    private function revokedCertificate(array &$rclist, $serial, $create = false)
+    {
+        $serial = new BigInteger($serial);
+
+        foreach ($rclist as $i => $rc) {
+            if (!($serial->compare($rc['userCertificate']))) {
+                return $i;
+            }
+        }
+
+        if (!$create) {
+            return false;
+        }
+
+        $i = count($rclist);
+        $revocationDate = new \DateTimeImmutable('now', new \DateTimeZone(@date_default_timezone_get()));
+        $rclist[] = ['userCertificate' => $serial,
+                          'revocationDate'  => $this->timeField($revocationDate->format('D, d M Y H:i:s O'))];
+        return $i;
+    }
+
+    /**
+     * Revoke a certificate.
+     *
+     * @param string $serial
+     * @param string $date optional
+     * @return bool
+     */
+    public function revoke($serial, $date = null)
+    {
+        if (isset($this->currentCert['tbsCertList'])) {
+            if (is_array($rclist = &$this->subArray($this->currentCert, 'tbsCertList/revokedCertificates', true))) {
+                if ($this->revokedCertificate($rclist, $serial) === false) { // If not yet revoked
+                    if (($i = $this->revokedCertificate($rclist, $serial, true)) !== false) {
+                        if (!empty($date)) {
+                            $rclist[$i]['revocationDate'] = $this->timeField($date);
+                        }
+
+                        return true;
+                    }
+                }
+            }
+        }
+
+        return false;
+    }
+
+    /**
+     * Unrevoke a certificate.
+     *
+     * @param string $serial
+     * @return bool
+     */
+    public function unrevoke($serial)
+    {
+        if (is_array($rclist = &$this->subArray($this->currentCert, 'tbsCertList/revokedCertificates'))) {
+            if (($i = $this->revokedCertificate($rclist, $serial)) !== false) {
+                unset($rclist[$i]);
+                $rclist = array_values($rclist);
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    /**
+     * Get a revoked certificate.
+     *
+     * @param string $serial
+     * @return mixed
+     */
+    public function getRevoked($serial)
+    {
+        if (is_array($rclist = $this->subArray($this->currentCert, 'tbsCertList/revokedCertificates'))) {
+            if (($i = $this->revokedCertificate($rclist, $serial)) !== false) {
+                return $rclist[$i];
+            }
+        }
+
+        return false;
+    }
+
+    /**
+     * List revoked certificates
+     *
+     * @param array $crl optional
+     * @return array|bool
+     */
+    public function listRevoked(array $crl = null)
+    {
+        if (!isset($crl)) {
+            $crl = $this->currentCert;
+        }
+
+        if (!isset($crl['tbsCertList'])) {
+            return false;
+        }
+
+        $result = [];
+
+        if (is_array($rclist = $this->subArray($crl, 'tbsCertList/revokedCertificates'))) {
+            foreach ($rclist as $rc) {
+                $result[] = $rc['userCertificate']->toString();
+            }
+        }
+
+        return $result;
+    }
+
+    /**
+     * Remove a Revoked Certificate Extension
+     *
+     * @param string $serial
+     * @param string $id
+     * @return bool
+     */
+    public function removeRevokedCertificateExtension($serial, $id)
+    {
+        if (is_array($rclist = &$this->subArray($this->currentCert, 'tbsCertList/revokedCertificates'))) {
+            if (($i = $this->revokedCertificate($rclist, $serial)) !== false) {
+                return $this->removeExtensionHelper($id, "tbsCertList/revokedCertificates/$i/crlEntryExtensions");
+            }
+        }
+
+        return false;
+    }
+
+    /**
+     * Get a Revoked Certificate Extension
+     *
+     * Returns the extension if it exists and false if not
+     *
+     * @param string $serial
+     * @param string $id
+     * @param array $crl optional
+     * @return mixed
+     */
+    public function getRevokedCertificateExtension($serial, $id, array $crl = null)
+    {
+        if (!isset($crl)) {
+            $crl = $this->currentCert;
+        }
+
+        if (is_array($rclist = $this->subArray($crl, 'tbsCertList/revokedCertificates'))) {
+            if (($i = $this->revokedCertificate($rclist, $serial)) !== false) {
+                return $this->getExtension($id, $crl, "tbsCertList/revokedCertificates/$i/crlEntryExtensions");
+            }
+        }
+
+        return false;
+    }
+
+    /**
+     * Returns a list of all extensions in use for a given revoked certificate
+     *
+     * @param string $serial
+     * @param array $crl optional
+     * @return array|bool
+     */
+    public function getRevokedCertificateExtensions($serial, array $crl = null)
+    {
+        if (!isset($crl)) {
+            $crl = $this->currentCert;
+        }
+
+        if (is_array($rclist = $this->subArray($crl, 'tbsCertList/revokedCertificates'))) {
+            if (($i = $this->revokedCertificate($rclist, $serial)) !== false) {
+                return $this->getExtensions($crl, "tbsCertList/revokedCertificates/$i/crlEntryExtensions");
+            }
+        }
+
+        return false;
+    }
+
+    /**
+     * Set a Revoked Certificate Extension
+     *
+     * @param string $serial
+     * @param string $id
+     * @param mixed $value
+     * @param bool $critical optional
+     * @param bool $replace optional
+     * @return bool
+     */
+    public function setRevokedCertificateExtension($serial, $id, $value, $critical = false, $replace = true)
+    {
+        if (isset($this->currentCert['tbsCertList'])) {
+            if (is_array($rclist = &$this->subArray($this->currentCert, 'tbsCertList/revokedCertificates', true))) {
+                if (($i = $this->revokedCertificate($rclist, $serial, true)) !== false) {
+                    return $this->setExtensionHelper($id, $value, $critical, $replace, "tbsCertList/revokedCertificates/$i/crlEntryExtensions");
+                }
+            }
+        }
+
+        return false;
+    }
+
+    /**
+     * Register the mapping for a custom/unsupported extension.
+     *
+     * @param string $id
+     * @param array $mapping
+     */
+    public static function registerExtension($id, array $mapping)
+    {
+        if (isset(self::$extensions[$id]) && self::$extensions[$id] !== $mapping) {
+            throw new \RuntimeException(
+                'Extension ' . $id . ' has already been defined with a different mapping.'
+            );
+        }
+
+        self::$extensions[$id] = $mapping;
+    }
+
+    /**
+     * Register the mapping for a custom/unsupported extension.
+     *
+     * @param string $id
+     *
+     * @return array|null
+     */
+    public static function getRegisteredExtension($id)
+    {
+        return isset(self::$extensions[$id]) ? self::$extensions[$id] : null;
+    }
+
+    /**
+     * Register the mapping for a custom/unsupported extension.
+     *
+     * @param string $id
+     * @param mixed $value
+     * @param bool $critical
+     * @param bool $replace
+     */
+    public function setExtensionValue($id, $value, $critical = false, $replace = false)
+    {
+        $this->extensionValues[$id] = compact('critical', 'replace', 'value');
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger.php b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger.php
new file mode 100644
index 0000000..67d4788
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger.php
@@ -0,0 +1,892 @@
+<?php
+
+/**
+ * Pure-PHP arbitrary precision integer arithmetic library.
+ *
+ * Supports base-2, base-10, base-16, and base-256 numbers.  Uses the GMP or BCMath extensions, if available,
+ * and an internal implementation, otherwise.
+ *
+ * PHP version 5 and 7
+ *
+ * Here's an example of how to use this library:
+ * <code>
+ * <?php
+ *    $a = new \phpseclib3\Math\BigInteger(2);
+ *    $b = new \phpseclib3\Math\BigInteger(3);
+ *
+ *    $c = $a->add($b);
+ *
+ *    echo $c->toString(); // outputs 5
+ * ?>
+ * </code>
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ */
+
+namespace phpseclib3\Math;
+
+use phpseclib3\Exception\BadConfigurationException;
+use phpseclib3\Math\BigInteger\Engines\Engine;
+
+/**
+ * Pure-PHP arbitrary precision integer arithmetic library. Supports base-2, base-10, base-16, and base-256
+ * numbers.
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+class BigInteger implements \JsonSerializable
+{
+    /**
+     * Main Engine
+     *
+     * @var class-string<Engine>
+     */
+    private static $mainEngine;
+
+    /**
+     * Selected Engines
+     *
+     * @var list<string>
+     */
+    private static $engines;
+
+    /**
+     * The actual BigInteger object
+     *
+     * @var object
+     */
+    private $value;
+
+    /**
+     * Mode independent value used for serialization.
+     *
+     * @see self::__sleep()
+     * @see self::__wakeup()
+     * @var string
+     */
+    private $hex;
+
+    /**
+     * Precision (used only for serialization)
+     *
+     * @see self::__sleep()
+     * @see self::__wakeup()
+     * @var int
+     */
+    private $precision;
+
+    /**
+     * Sets engine type.
+     *
+     * Throws an exception if the type is invalid
+     *
+     * @param string $main
+     * @param list<string> $modexps optional
+     * @return void
+     */
+    public static function setEngine($main, array $modexps = ['DefaultEngine'])
+    {
+        self::$engines = [];
+
+        $fqmain = 'phpseclib3\\Math\\BigInteger\\Engines\\' . $main;
+        if (!class_exists($fqmain) || !method_exists($fqmain, 'isValidEngine')) {
+            throw new \InvalidArgumentException("$main is not a valid engine");
+        }
+        if (!$fqmain::isValidEngine()) {
+            throw new BadConfigurationException("$main is not setup correctly on this system");
+        }
+        /** @var class-string<Engine> $fqmain */
+        self::$mainEngine = $fqmain;
+
+        $found = false;
+        foreach ($modexps as $modexp) {
+            try {
+                $fqmain::setModExpEngine($modexp);
+                $found = true;
+                break;
+            } catch (\Exception $e) {
+            }
+        }
+
+        if (!$found) {
+            throw new BadConfigurationException("No valid modular exponentiation engine found for $main");
+        }
+
+        self::$engines = [$main, $modexp];
+    }
+
+    /**
+     * Returns the engine type
+     *
+     * @return string[]
+     */
+    public static function getEngine()
+    {
+        self::initialize_static_variables();
+
+        return self::$engines;
+    }
+
+    /**
+     * Initialize static variables
+     */
+    private static function initialize_static_variables()
+    {
+        if (!isset(self::$mainEngine)) {
+            $engines = [
+                ['GMP', ['DefaultEngine']],
+                ['PHP64', ['OpenSSL']],
+                ['BCMath', ['OpenSSL']],
+                ['PHP32', ['OpenSSL']],
+                ['PHP64', ['DefaultEngine']],
+                ['PHP32', ['DefaultEngine']]
+            ];
+
+            foreach ($engines as $engine) {
+                try {
+                    self::setEngine($engine[0], $engine[1]);
+                    return;
+                } catch (\Exception $e) {
+                }
+            }
+
+            throw new \UnexpectedValueException('No valid BigInteger found. This is only possible when JIT is enabled on Windows and neither the GMP or BCMath extensions are available so either disable JIT or install GMP / BCMath');
+        }
+    }
+
+    /**
+     * Converts base-2, base-10, base-16, and binary strings (base-256) to BigIntegers.
+     *
+     * If the second parameter - $base - is negative, then it will be assumed that the number's are encoded using
+     * two's compliment.  The sole exception to this is -10, which is treated the same as 10 is.
+     *
+     * @param string|int|BigInteger\Engines\Engine $x Base-10 number or base-$base number if $base set.
+     * @param int $base
+     */
+    public function __construct($x = 0, $base = 10)
+    {
+        self::initialize_static_variables();
+
+        if ($x instanceof self::$mainEngine) {
+            $this->value = clone $x;
+        } elseif ($x instanceof BigInteger\Engines\Engine) {
+            $this->value = new static("$x");
+            $this->value->setPrecision($x->getPrecision());
+        } else {
+            $this->value = new self::$mainEngine($x, $base);
+        }
+    }
+
+    /**
+     * Converts a BigInteger to a base-10 number.
+     *
+     * @return string
+     */
+    public function toString()
+    {
+        return $this->value->toString();
+    }
+
+    /**
+     *  __toString() magic method
+     */
+    public function __toString()
+    {
+        return (string)$this->value;
+    }
+
+    /**
+     *  __debugInfo() magic method
+     *
+     * Will be called, automatically, when print_r() or var_dump() are called
+     */
+    public function __debugInfo()
+    {
+        return $this->value->__debugInfo();
+    }
+
+    /**
+     * Converts a BigInteger to a byte string (eg. base-256).
+     *
+     * @param bool $twos_compliment
+     * @return string
+     */
+    public function toBytes($twos_compliment = false)
+    {
+        return $this->value->toBytes($twos_compliment);
+    }
+
+    /**
+     * Converts a BigInteger to a hex string (eg. base-16).
+     *
+     * @param bool $twos_compliment
+     * @return string
+     */
+    public function toHex($twos_compliment = false)
+    {
+        return $this->value->toHex($twos_compliment);
+    }
+
+    /**
+     * Converts a BigInteger to a bit string (eg. base-2).
+     *
+     * Negative numbers are saved as positive numbers, unless $twos_compliment is set to true, at which point, they're
+     * saved as two's compliment.
+     *
+     * @param bool $twos_compliment
+     * @return string
+     */
+    public function toBits($twos_compliment = false)
+    {
+        return $this->value->toBits($twos_compliment);
+    }
+
+    /**
+     * Adds two BigIntegers.
+     *
+     * @param BigInteger $y
+     * @return BigInteger
+     */
+    public function add(BigInteger $y)
+    {
+        return new static($this->value->add($y->value));
+    }
+
+    /**
+     * Subtracts two BigIntegers.
+     *
+     * @param BigInteger $y
+     * @return BigInteger
+     */
+    public function subtract(BigInteger $y)
+    {
+        return new static($this->value->subtract($y->value));
+    }
+
+    /**
+     * Multiplies two BigIntegers
+     *
+     * @param BigInteger $x
+     * @return BigInteger
+     */
+    public function multiply(BigInteger $x)
+    {
+        return new static($this->value->multiply($x->value));
+    }
+
+    /**
+     * Divides two BigIntegers.
+     *
+     * Returns an array whose first element contains the quotient and whose second element contains the
+     * "common residue".  If the remainder would be positive, the "common residue" and the remainder are the
+     * same.  If the remainder would be negative, the "common residue" is equal to the sum of the remainder
+     * and the divisor (basically, the "common residue" is the first positive modulo).
+     *
+     * Here's an example:
+     * <code>
+     * <?php
+     *    $a = new \phpseclib3\Math\BigInteger('10');
+     *    $b = new \phpseclib3\Math\BigInteger('20');
+     *
+     *    list($quotient, $remainder) = $a->divide($b);
+     *
+     *    echo $quotient->toString(); // outputs 0
+     *    echo "\r\n";
+     *    echo $remainder->toString(); // outputs 10
+     * ?>
+     * </code>
+     *
+     * @param BigInteger $y
+     * @return BigInteger[]
+     */
+    public function divide(BigInteger $y)
+    {
+        list($q, $r) = $this->value->divide($y->value);
+        return [
+            new static($q),
+            new static($r)
+        ];
+    }
+
+    /**
+     * Calculates modular inverses.
+     *
+     * Say you have (30 mod 17 * x mod 17) mod 17 == 1.  x can be found using modular inverses.
+     *
+     * @param BigInteger $n
+     * @return BigInteger
+     */
+    public function modInverse(BigInteger $n)
+    {
+        return new static($this->value->modInverse($n->value));
+    }
+
+    /**
+     * Calculates modular inverses.
+     *
+     * Say you have (30 mod 17 * x mod 17) mod 17 == 1.  x can be found using modular inverses.
+     *
+     * @param BigInteger $n
+     * @return BigInteger[]
+     */
+    public function extendedGCD(BigInteger $n)
+    {
+        extract($this->value->extendedGCD($n->value));
+        /**
+         * @var BigInteger $gcd
+         * @var BigInteger $x
+         * @var BigInteger $y
+         */
+        return [
+            'gcd' => new static($gcd),
+            'x' => new static($x),
+            'y' => new static($y)
+        ];
+    }
+
+    /**
+     * Calculates the greatest common divisor
+     *
+     * Say you have 693 and 609.  The GCD is 21.
+     *
+     * @param BigInteger $n
+     * @return BigInteger
+     */
+    public function gcd(BigInteger $n)
+    {
+        return new static($this->value->gcd($n->value));
+    }
+
+    /**
+     * Absolute value.
+     *
+     * @return BigInteger
+     */
+    public function abs()
+    {
+        return new static($this->value->abs());
+    }
+
+    /**
+     * Set Precision
+     *
+     * Some bitwise operations give different results depending on the precision being used.  Examples include left
+     * shift, not, and rotates.
+     *
+     * @param int $bits
+     */
+    public function setPrecision($bits)
+    {
+        $this->value->setPrecision($bits);
+    }
+
+    /**
+     * Get Precision
+     *
+     * Returns the precision if it exists, false if it doesn't
+     *
+     * @return int|bool
+     */
+    public function getPrecision()
+    {
+        return $this->value->getPrecision();
+    }
+
+    /**
+     * Serialize
+     *
+     * Will be called, automatically, when serialize() is called on a BigInteger object.
+     *
+     * __sleep() / __wakeup() have been around since PHP 4.0
+     *
+     * \Serializable was introduced in PHP 5.1 and deprecated in PHP 8.1:
+     * https://wiki.php.net/rfc/phase_out_serializable
+     *
+     * __serialize() / __unserialize() were introduced in PHP 7.4:
+     * https://wiki.php.net/rfc/custom_object_serialization
+     *
+     * @return array
+     */
+    public function __sleep()
+    {
+        $this->hex = $this->toHex(true);
+        $vars = ['hex'];
+        if ($this->getPrecision() > 0) {
+            $vars[] = 'precision';
+        }
+        return $vars;
+    }
+
+    /**
+     * Serialize
+     *
+     * Will be called, automatically, when unserialize() is called on a BigInteger object.
+     */
+    public function __wakeup()
+    {
+        $temp = new static($this->hex, -16);
+        $this->value = $temp->value;
+        if ($this->precision > 0) {
+            // recalculate $this->bitmask
+            $this->setPrecision($this->precision);
+        }
+    }
+
+    /**
+     * JSON Serialize
+     *
+     * Will be called, automatically, when json_encode() is called on a BigInteger object.
+     *
+     * @return array{hex: string, precision?: int]
+     */
+    #[\ReturnTypeWillChange]
+    public function jsonSerialize()
+    {
+        $result = ['hex' => $this->toHex(true)];
+        if ($this->precision > 0) {
+            $result['precision'] = $this->getPrecision();
+        }
+        return $result;
+    }
+
+    /**
+     * Performs modular exponentiation.
+     *
+     * @param BigInteger $e
+     * @param BigInteger $n
+     * @return BigInteger
+     */
+    public function powMod(BigInteger $e, BigInteger $n)
+    {
+        return new static($this->value->powMod($e->value, $n->value));
+    }
+
+    /**
+     * Performs modular exponentiation.
+     *
+     * @param BigInteger $e
+     * @param BigInteger $n
+     * @return BigInteger
+     */
+    public function modPow(BigInteger $e, BigInteger $n)
+    {
+        return new static($this->value->modPow($e->value, $n->value));
+    }
+
+    /**
+     * Compares two numbers.
+     *
+     * Although one might think !$x->compare($y) means $x != $y, it, in fact, means the opposite.  The reason for this
+     * is demonstrated thusly:
+     *
+     * $x  > $y: $x->compare($y)  > 0
+     * $x  < $y: $x->compare($y)  < 0
+     * $x == $y: $x->compare($y) == 0
+     *
+     * Note how the same comparison operator is used.  If you want to test for equality, use $x->equals($y).
+     *
+     * {@internal Could return $this->subtract($x), but that's not as fast as what we do do.}
+     *
+     * @param BigInteger $y
+     * @return int in case < 0 if $this is less than $y; > 0 if $this is greater than $y, and 0 if they are equal.
+     * @see self::equals()
+     */
+    public function compare(BigInteger $y)
+    {
+        return $this->value->compare($y->value);
+    }
+
+    /**
+     * Tests the equality of two numbers.
+     *
+     * If you need to see if one number is greater than or less than another number, use BigInteger::compare()
+     *
+     * @param BigInteger $x
+     * @return bool
+     */
+    public function equals(BigInteger $x)
+    {
+        return $this->value->equals($x->value);
+    }
+
+    /**
+     * Logical Not
+     *
+     * @return BigInteger
+     */
+    public function bitwise_not()
+    {
+        return new static($this->value->bitwise_not());
+    }
+
+    /**
+     * Logical And
+     *
+     * @param BigInteger $x
+     * @return BigInteger
+     */
+    public function bitwise_and(BigInteger $x)
+    {
+        return new static($this->value->bitwise_and($x->value));
+    }
+
+    /**
+     * Logical Or
+     *
+     * @param BigInteger $x
+     * @return BigInteger
+     */
+    public function bitwise_or(BigInteger $x)
+    {
+        return new static($this->value->bitwise_or($x->value));
+    }
+
+    /**
+     * Logical Exclusive Or
+     *
+     * @param BigInteger $x
+     * @return BigInteger
+     */
+    public function bitwise_xor(BigInteger $x)
+    {
+        return new static($this->value->bitwise_xor($x->value));
+    }
+
+    /**
+     * Logical Right Shift
+     *
+     * Shifts BigInteger's by $shift bits, effectively dividing by 2**$shift.
+     *
+     * @param int $shift
+     * @return BigInteger
+     */
+    public function bitwise_rightShift($shift)
+    {
+        return new static($this->value->bitwise_rightShift($shift));
+    }
+
+    /**
+     * Logical Left Shift
+     *
+     * Shifts BigInteger's by $shift bits, effectively multiplying by 2**$shift.
+     *
+     * @param int $shift
+     * @return BigInteger
+     */
+    public function bitwise_leftShift($shift)
+    {
+        return new static($this->value->bitwise_leftShift($shift));
+    }
+
+    /**
+     * Logical Left Rotate
+     *
+     * Instead of the top x bits being dropped they're appended to the shifted bit string.
+     *
+     * @param int $shift
+     * @return BigInteger
+     */
+    public function bitwise_leftRotate($shift)
+    {
+        return new static($this->value->bitwise_leftRotate($shift));
+    }
+
+    /**
+     * Logical Right Rotate
+     *
+     * Instead of the bottom x bits being dropped they're prepended to the shifted bit string.
+     *
+     * @param int $shift
+     * @return BigInteger
+     */
+    public function bitwise_rightRotate($shift)
+    {
+        return new static($this->value->bitwise_rightRotate($shift));
+    }
+
+    /**
+     * Returns the smallest and largest n-bit number
+     *
+     * @param int $bits
+     * @return BigInteger[]
+     */
+    public static function minMaxBits($bits)
+    {
+        self::initialize_static_variables();
+
+        $class = self::$mainEngine;
+        extract($class::minMaxBits($bits));
+        /** @var BigInteger $min
+         * @var BigInteger $max
+         */
+        return [
+            'min' => new static($min),
+            'max' => new static($max)
+        ];
+    }
+
+    /**
+     * Return the size of a BigInteger in bits
+     *
+     * @return int
+     */
+    public function getLength()
+    {
+        return $this->value->getLength();
+    }
+
+    /**
+     * Return the size of a BigInteger in bytes
+     *
+     * @return int
+     */
+    public function getLengthInBytes()
+    {
+        return $this->value->getLengthInBytes();
+    }
+
+    /**
+     * Generates a random number of a certain size
+     *
+     * Bit length is equal to $size
+     *
+     * @param int $size
+     * @return BigInteger
+     */
+    public static function random($size)
+    {
+        self::initialize_static_variables();
+
+        $class = self::$mainEngine;
+        return new static($class::random($size));
+    }
+
+    /**
+     * Generates a random prime number of a certain size
+     *
+     * Bit length is equal to $size
+     *
+     * @param int $size
+     * @return BigInteger
+     */
+    public static function randomPrime($size)
+    {
+        self::initialize_static_variables();
+
+        $class = self::$mainEngine;
+        return new static($class::randomPrime($size));
+    }
+
+    /**
+     * Generate a random prime number between a range
+     *
+     * If there's not a prime within the given range, false will be returned.
+     *
+     * @param BigInteger $min
+     * @param BigInteger $max
+     * @return false|BigInteger
+     */
+    public static function randomRangePrime(BigInteger $min, BigInteger $max)
+    {
+        $class = self::$mainEngine;
+        return new static($class::randomRangePrime($min->value, $max->value));
+    }
+
+    /**
+     * Generate a random number between a range
+     *
+     * Returns a random number between $min and $max where $min and $max
+     * can be defined using one of the two methods:
+     *
+     * BigInteger::randomRange($min, $max)
+     * BigInteger::randomRange($max, $min)
+     *
+     * @param BigInteger $min
+     * @param BigInteger $max
+     * @return BigInteger
+     */
+    public static function randomRange(BigInteger $min, BigInteger $max)
+    {
+        $class = self::$mainEngine;
+        return new static($class::randomRange($min->value, $max->value));
+    }
+
+    /**
+     * Checks a numer to see if it's prime
+     *
+     * Assuming the $t parameter is not set, this function has an error rate of 2**-80.  The main motivation for the
+     * $t parameter is distributability.  BigInteger::randomPrime() can be distributed across multiple pageloads
+     * on a website instead of just one.
+     *
+     * @param int|bool $t
+     * @return bool
+     */
+    public function isPrime($t = false)
+    {
+        return $this->value->isPrime($t);
+    }
+
+    /**
+     * Calculates the nth root of a biginteger.
+     *
+     * Returns the nth root of a positive biginteger, where n defaults to 2
+     *
+     * @param int $n optional
+     * @return BigInteger
+     */
+    public function root($n = 2)
+    {
+        return new static($this->value->root($n));
+    }
+
+    /**
+     * Performs exponentiation.
+     *
+     * @param BigInteger $n
+     * @return BigInteger
+     */
+    public function pow(BigInteger $n)
+    {
+        return new static($this->value->pow($n->value));
+    }
+
+    /**
+     * Return the minimum BigInteger between an arbitrary number of BigIntegers.
+     *
+     * @param BigInteger ...$nums
+     * @return BigInteger
+     */
+    public static function min(BigInteger ...$nums)
+    {
+        $class = self::$mainEngine;
+        $nums = array_map(function ($num) {
+            return $num->value;
+        }, $nums);
+        return new static($class::min(...$nums));
+    }
+
+    /**
+     * Return the maximum BigInteger between an arbitrary number of BigIntegers.
+     *
+     * @param BigInteger ...$nums
+     * @return BigInteger
+     */
+    public static function max(BigInteger ...$nums)
+    {
+        $class = self::$mainEngine;
+        $nums = array_map(function ($num) {
+            return $num->value;
+        }, $nums);
+        return new static($class::max(...$nums));
+    }
+
+    /**
+     * Tests BigInteger to see if it is between two integers, inclusive
+     *
+     * @param BigInteger $min
+     * @param BigInteger $max
+     * @return bool
+     */
+    public function between(BigInteger $min, BigInteger $max)
+    {
+        return $this->value->between($min->value, $max->value);
+    }
+
+    /**
+     * Clone
+     */
+    public function __clone()
+    {
+        $this->value = clone $this->value;
+    }
+
+    /**
+     * Is Odd?
+     *
+     * @return bool
+     */
+    public function isOdd()
+    {
+        return $this->value->isOdd();
+    }
+
+    /**
+     * Tests if a bit is set
+     *
+     * @param int $x
+     * @return bool
+     */
+    public function testBit($x)
+    {
+        return $this->value->testBit($x);
+    }
+
+    /**
+     * Is Negative?
+     *
+     * @return bool
+     */
+    public function isNegative()
+    {
+        return $this->value->isNegative();
+    }
+
+    /**
+     * Negate
+     *
+     * Given $k, returns -$k
+     *
+     * @return BigInteger
+     */
+    public function negate()
+    {
+        return new static($this->value->negate());
+    }
+
+    /**
+     * Scan for 1 and right shift by that amount
+     *
+     * ie. $s = gmp_scan1($n, 0) and $r = gmp_div_q($n, gmp_pow(gmp_init('2'), $s));
+     *
+     * @param BigInteger $r
+     * @return int
+     */
+    public static function scan1divide(BigInteger $r)
+    {
+        $class = self::$mainEngine;
+        return $class::scan1divide($r->value);
+    }
+
+    /**
+     * Create Recurring Modulo Function
+     *
+     * Sometimes it may be desirable to do repeated modulos with the same number outside of
+     * modular exponentiation
+     *
+     * @return callable
+     */
+    public function createRecurringModuloFunction()
+    {
+        $func = $this->value->createRecurringModuloFunction();
+        return function (BigInteger $x) use ($func) {
+            return new static($func($x->value));
+        };
+    }
+
+    /**
+     * Bitwise Split
+     *
+     * Splits BigInteger's into chunks of $split bits
+     *
+     * @param int $split
+     * @return BigInteger[]
+     */
+    public function bitwise_split($split)
+    {
+        return array_map(function ($val) {
+            return new static($val);
+        }, $this->value->bitwise_split($split));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/BCMath.php b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/BCMath.php
new file mode 100644
index 0000000..7c5ca9f
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/BCMath.php
@@ -0,0 +1,697 @@
+<?php
+
+/**
+ * BCMath BigInteger Engine
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Math\BigInteger\Engines;
+
+use phpseclib3\Common\Functions\Strings;
+use phpseclib3\Exception\BadConfigurationException;
+
+/**
+ * BCMath Engine.
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+class BCMath extends Engine
+{
+    /**
+     * Can Bitwise operations be done fast?
+     *
+     * @see parent::bitwise_leftRotate()
+     * @see parent::bitwise_rightRotate()
+     */
+    const FAST_BITWISE = false;
+
+    /**
+     * Engine Directory
+     *
+     * @see parent::setModExpEngine
+     */
+    const ENGINE_DIR = 'BCMath';
+
+    /**
+     * Test for engine validity
+     *
+     * @return bool
+     * @see parent::__construct()
+     */
+    public static function isValidEngine()
+    {
+        return extension_loaded('bcmath');
+    }
+
+    /**
+     * Default constructor
+     *
+     * @param mixed $x integer Base-10 number or base-$base number if $base set.
+     * @param int $base
+     * @see parent::__construct()
+     */
+    public function __construct($x = 0, $base = 10)
+    {
+        if (!isset(static::$isValidEngine[static::class])) {
+            static::$isValidEngine[static::class] = self::isValidEngine();
+        }
+        if (!static::$isValidEngine[static::class]) {
+            throw new BadConfigurationException('BCMath is not setup correctly on this system');
+        }
+
+        $this->value = '0';
+
+        parent::__construct($x, $base);
+    }
+
+    /**
+     * Initialize a BCMath BigInteger Engine instance
+     *
+     * @param int $base
+     * @see parent::__construct()
+     */
+    protected function initialize($base)
+    {
+        switch (abs($base)) {
+            case 256:
+                // round $len to the nearest 4
+                $len = (strlen($this->value) + 3) & ~3;
+
+                $x = str_pad($this->value, $len, chr(0), STR_PAD_LEFT);
+
+                $this->value = '0';
+                for ($i = 0; $i < $len; $i += 4) {
+                    $this->value = bcmul($this->value, '4294967296', 0); // 4294967296 == 2**32
+                    $this->value = bcadd(
+                        $this->value,
+                        0x1000000 * ord($x[$i]) + ((ord($x[$i + 1]) << 16) | (ord(
+                            $x[$i + 2]
+                        ) << 8) | ord($x[$i + 3])),
+                        0
+                    );
+                }
+
+                if ($this->is_negative) {
+                    $this->value = '-' . $this->value;
+                }
+                break;
+            case 16:
+                $x = (strlen($this->value) & 1) ? '0' . $this->value : $this->value;
+                $temp = new self(Strings::hex2bin($x), 256);
+                $this->value = $this->is_negative ? '-' . $temp->value : $temp->value;
+                $this->is_negative = false;
+                break;
+            case 10:
+                // explicitly casting $x to a string is necessary, here, since doing $x[0] on -1 yields different
+                // results then doing it on '-1' does (modInverse does $x[0])
+                $this->value = $this->value === '-' ? '0' : (string)$this->value;
+        }
+    }
+
+    /**
+     * Converts a BigInteger to a base-10 number.
+     *
+     * @return string
+     */
+    public function toString()
+    {
+        if ($this->value === '0') {
+            return '0';
+        }
+
+        return ltrim($this->value, '0');
+    }
+
+    /**
+     * Converts a BigInteger to a byte string (eg. base-256).
+     *
+     * @param bool $twos_compliment
+     * @return string
+     */
+    public function toBytes($twos_compliment = false)
+    {
+        if ($twos_compliment) {
+            return $this->toBytesHelper();
+        }
+
+        $value = '';
+        $current = $this->value;
+
+        if ($current[0] == '-') {
+            $current = substr($current, 1);
+        }
+
+        while (bccomp($current, '0', 0) > 0) {
+            $temp = bcmod($current, '16777216');
+            $value = chr($temp >> 16) . chr($temp >> 8) . chr($temp) . $value;
+            $current = bcdiv($current, '16777216', 0);
+        }
+
+        return $this->precision > 0 ?
+            substr(str_pad($value, $this->precision >> 3, chr(0), STR_PAD_LEFT), -($this->precision >> 3)) :
+            ltrim($value, chr(0));
+    }
+
+    /**
+     * Adds two BigIntegers.
+     *
+     * @param BCMath $y
+     * @return BCMath
+     */
+    public function add(BCMath $y)
+    {
+        $temp = new self();
+        $temp->value = bcadd($this->value, $y->value);
+
+        return $this->normalize($temp);
+    }
+
+    /**
+     * Subtracts two BigIntegers.
+     *
+     * @param BCMath $y
+     * @return BCMath
+     */
+    public function subtract(BCMath $y)
+    {
+        $temp = new self();
+        $temp->value = bcsub($this->value, $y->value);
+
+        return $this->normalize($temp);
+    }
+
+    /**
+     * Multiplies two BigIntegers.
+     *
+     * @param BCMath $x
+     * @return BCMath
+     */
+    public function multiply(BCMath $x)
+    {
+        $temp = new self();
+        $temp->value = bcmul($this->value, $x->value);
+
+        return $this->normalize($temp);
+    }
+
+    /**
+     * Divides two BigIntegers.
+     *
+     * Returns an array whose first element contains the quotient and whose second element contains the
+     * "common residue".  If the remainder would be positive, the "common residue" and the remainder are the
+     * same.  If the remainder would be negative, the "common residue" is equal to the sum of the remainder
+     * and the divisor (basically, the "common residue" is the first positive modulo).
+     *
+     * @param BCMath $y
+     * @return array{static, static}
+     */
+    public function divide(BCMath $y)
+    {
+        $quotient = new self();
+        $remainder = new self();
+
+        $quotient->value = bcdiv($this->value, $y->value, 0);
+        $remainder->value = bcmod($this->value, $y->value);
+
+        if ($remainder->value[0] == '-') {
+            $remainder->value = bcadd($remainder->value, $y->value[0] == '-' ? substr($y->value, 1) : $y->value, 0);
+        }
+
+        return [$this->normalize($quotient), $this->normalize($remainder)];
+    }
+
+    /**
+     * Calculates modular inverses.
+     *
+     * Say you have (30 mod 17 * x mod 17) mod 17 == 1.  x can be found using modular inverses.
+     *
+     * @param BCMath $n
+     * @return false|BCMath
+     */
+    public function modInverse(BCMath $n)
+    {
+        return $this->modInverseHelper($n);
+    }
+
+    /**
+     * Calculates the greatest common divisor and Bezout's identity.
+     *
+     * Say you have 693 and 609.  The GCD is 21.  Bezout's identity states that there exist integers x and y such that
+     * 693*x + 609*y == 21.  In point of fact, there are actually an infinite number of x and y combinations and which
+     * combination is returned is dependent upon which mode is in use.  See
+     * {@link http://en.wikipedia.org/wiki/B%C3%A9zout%27s_identity Bezout's identity - Wikipedia} for more information.
+     *
+     * @param BCMath $n
+     * @return array{gcd: static, x: static, y: static}
+     */
+    public function extendedGCD(BCMath $n)
+    {
+        // it might be faster to use the binary xGCD algorithim here, as well, but (1) that algorithim works
+        // best when the base is a power of 2 and (2) i don't think it'd make much difference, anyway.  as is,
+        // the basic extended euclidean algorithim is what we're using.
+
+        $u = $this->value;
+        $v = $n->value;
+
+        $a = '1';
+        $b = '0';
+        $c = '0';
+        $d = '1';
+
+        while (bccomp($v, '0', 0) != 0) {
+            $q = bcdiv($u, $v, 0);
+
+            $temp = $u;
+            $u = $v;
+            $v = bcsub($temp, bcmul($v, $q, 0), 0);
+
+            $temp = $a;
+            $a = $c;
+            $c = bcsub($temp, bcmul($a, $q, 0), 0);
+
+            $temp = $b;
+            $b = $d;
+            $d = bcsub($temp, bcmul($b, $q, 0), 0);
+        }
+
+        return [
+            'gcd' => $this->normalize(new static($u)),
+            'x' => $this->normalize(new static($a)),
+            'y' => $this->normalize(new static($b))
+        ];
+    }
+
+    /**
+     * Calculates the greatest common divisor
+     *
+     * Say you have 693 and 609.  The GCD is 21.
+     *
+     * @param BCMath $n
+     * @return BCMath
+     */
+    public function gcd(BCMath $n)
+    {
+        extract($this->extendedGCD($n));
+        /** @var BCMath $gcd */
+        return $gcd;
+    }
+
+    /**
+     * Absolute value.
+     *
+     * @return BCMath
+     */
+    public function abs()
+    {
+        $temp = new static();
+        $temp->value = strlen($this->value) && $this->value[0] == '-' ?
+            substr($this->value, 1) :
+            $this->value;
+
+        return $temp;
+    }
+
+    /**
+     * Logical And
+     *
+     * @param BCMath $x
+     * @return BCMath
+     */
+    public function bitwise_and(BCMath $x)
+    {
+        return $this->bitwiseAndHelper($x);
+    }
+
+    /**
+     * Logical Or
+     *
+     * @param BCMath $x
+     * @return BCMath
+     */
+    public function bitwise_or(BCMath $x)
+    {
+        return $this->bitwiseXorHelper($x);
+    }
+
+    /**
+     * Logical Exclusive Or
+     *
+     * @param BCMath $x
+     * @return BCMath
+     */
+    public function bitwise_xor(BCMath $x)
+    {
+        return $this->bitwiseXorHelper($x);
+    }
+
+    /**
+     * Logical Right Shift
+     *
+     * Shifts BigInteger's by $shift bits, effectively dividing by 2**$shift.
+     *
+     * @param int $shift
+     * @return BCMath
+     */
+    public function bitwise_rightShift($shift)
+    {
+        $temp = new static();
+        $temp->value = bcdiv($this->value, bcpow('2', $shift, 0), 0);
+
+        return $this->normalize($temp);
+    }
+
+    /**
+     * Logical Left Shift
+     *
+     * Shifts BigInteger's by $shift bits, effectively multiplying by 2**$shift.
+     *
+     * @param int $shift
+     * @return BCMath
+     */
+    public function bitwise_leftShift($shift)
+    {
+        $temp = new static();
+        $temp->value = bcmul($this->value, bcpow('2', $shift, 0), 0);
+
+        return $this->normalize($temp);
+    }
+
+    /**
+     * Compares two numbers.
+     *
+     * Although one might think !$x->compare($y) means $x != $y, it, in fact, means the opposite.  The reason for this
+     * is demonstrated thusly:
+     *
+     * $x  > $y: $x->compare($y)  > 0
+     * $x  < $y: $x->compare($y)  < 0
+     * $x == $y: $x->compare($y) == 0
+     *
+     * Note how the same comparison operator is used.  If you want to test for equality, use $x->equals($y).
+     *
+     * {@internal Could return $this->subtract($x), but that's not as fast as what we do do.}
+     *
+     * @param BCMath $y
+     * @return int in case < 0 if $this is less than $y; > 0 if $this is greater than $y, and 0 if they are equal.
+     * @see self::equals()
+     */
+    public function compare(BCMath $y)
+    {
+        return bccomp($this->value, $y->value, 0);
+    }
+
+    /**
+     * Tests the equality of two numbers.
+     *
+     * If you need to see if one number is greater than or less than another number, use BigInteger::compare()
+     *
+     * @param BCMath $x
+     * @return bool
+     */
+    public function equals(BCMath $x)
+    {
+        return $this->value == $x->value;
+    }
+
+    /**
+     * Performs modular exponentiation.
+     *
+     * @param BCMath $e
+     * @param BCMath $n
+     * @return BCMath
+     */
+    public function modPow(BCMath $e, BCMath $n)
+    {
+        return $this->powModOuter($e, $n);
+    }
+
+    /**
+     * Performs modular exponentiation.
+     *
+     * Alias for modPow().
+     *
+     * @param BCMath $e
+     * @param BCMath $n
+     * @return BCMath
+     */
+    public function powMod(BCMath $e, BCMath $n)
+    {
+        return $this->powModOuter($e, $n);
+    }
+
+    /**
+     * Performs modular exponentiation.
+     *
+     * @param BCMath $e
+     * @param BCMath $n
+     * @return BCMath
+     */
+    protected function powModInner(BCMath $e, BCMath $n)
+    {
+        try {
+            $class = static::$modexpEngine[static::class];
+            return $class::powModHelper($this, $e, $n, static::class);
+        } catch (\Exception $err) {
+            return BCMath\DefaultEngine::powModHelper($this, $e, $n, static::class);
+        }
+    }
+
+    /**
+     * Normalize
+     *
+     * Removes leading zeros and truncates (if necessary) to maintain the appropriate precision
+     *
+     * @param BCMath $result
+     * @return BCMath
+     */
+    protected function normalize(BCMath $result)
+    {
+        $result->precision = $this->precision;
+        $result->bitmask = $this->bitmask;
+
+        if ($result->bitmask !== false) {
+            $result->value = bcmod($result->value, $result->bitmask->value);
+        }
+
+        return $result;
+    }
+
+    /**
+     * Generate a random prime number between a range
+     *
+     * If there's not a prime within the given range, false will be returned.
+     *
+     * @param BCMath $min
+     * @param BCMath $max
+     * @return false|BCMath
+     */
+    public static function randomRangePrime(BCMath $min, BCMath $max)
+    {
+        return self::randomRangePrimeOuter($min, $max);
+    }
+
+    /**
+     * Generate a random number between a range
+     *
+     * Returns a random number between $min and $max where $min and $max
+     * can be defined using one of the two methods:
+     *
+     * BigInteger::randomRange($min, $max)
+     * BigInteger::randomRange($max, $min)
+     *
+     * @param BCMath $min
+     * @param BCMath $max
+     * @return BCMath
+     */
+    public static function randomRange(BCMath $min, BCMath $max)
+    {
+        return self::randomRangeHelper($min, $max);
+    }
+
+    /**
+     * Make the current number odd
+     *
+     * If the current number is odd it'll be unchanged.  If it's even, one will be added to it.
+     *
+     * @see self::randomPrime()
+     */
+    protected function make_odd()
+    {
+        if (!$this->isOdd()) {
+            $this->value = bcadd($this->value, '1');
+        }
+    }
+
+    /**
+     * Test the number against small primes.
+     *
+     * @see self::isPrime()
+     */
+    protected function testSmallPrimes()
+    {
+        if ($this->value === '1') {
+            return false;
+        }
+        if ($this->value === '2') {
+            return true;
+        }
+        if ($this->value[strlen($this->value) - 1] % 2 == 0) {
+            return false;
+        }
+
+        $value = $this->value;
+
+        foreach (self::PRIMES as $prime) {
+            $r = bcmod($this->value, $prime);
+            if ($r == '0') {
+                return $this->value == $prime;
+            }
+        }
+
+        return true;
+    }
+
+    /**
+     * Scan for 1 and right shift by that amount
+     *
+     * ie. $s = gmp_scan1($n, 0) and $r = gmp_div_q($n, gmp_pow(gmp_init('2'), $s));
+     *
+     * @param BCMath $r
+     * @return int
+     * @see self::isPrime()
+     */
+    public static function scan1divide(BCMath $r)
+    {
+        $r_value = &$r->value;
+        $s = 0;
+        // if $n was 1, $r would be 0 and this would be an infinite loop, hence our $this->equals(static::$one[static::class]) check earlier
+        while ($r_value[strlen($r_value) - 1] % 2 == 0) {
+            $r_value = bcdiv($r_value, '2', 0);
+            ++$s;
+        }
+
+        return $s;
+    }
+
+    /**
+     * Performs exponentiation.
+     *
+     * @param BCMath $n
+     * @return BCMath
+     */
+    public function pow(BCMath $n)
+    {
+        $temp = new self();
+        $temp->value = bcpow($this->value, $n->value);
+
+        return $this->normalize($temp);
+    }
+
+    /**
+     * Return the minimum BigInteger between an arbitrary number of BigIntegers.
+     *
+     * @param BCMath ...$nums
+     * @return BCMath
+     */
+    public static function min(BCMath ...$nums)
+    {
+        return self::minHelper($nums);
+    }
+
+    /**
+     * Return the maximum BigInteger between an arbitrary number of BigIntegers.
+     *
+     * @param BCMath ...$nums
+     * @return BCMath
+     */
+    public static function max(BCMath ...$nums)
+    {
+        return self::maxHelper($nums);
+    }
+
+    /**
+     * Tests BigInteger to see if it is between two integers, inclusive
+     *
+     * @param BCMath $min
+     * @param BCMath $max
+     * @return bool
+     */
+    public function between(BCMath $min, BCMath $max)
+    {
+        return $this->compare($min) >= 0 && $this->compare($max) <= 0;
+    }
+
+    /**
+     * Set Bitmask
+     *
+     * @param int $bits
+     * @return Engine
+     * @see self::setPrecision()
+     */
+    protected static function setBitmask($bits)
+    {
+        $temp = parent::setBitmask($bits);
+        return $temp->add(static::$one[static::class]);
+    }
+
+    /**
+     * Is Odd?
+     *
+     * @return bool
+     */
+    public function isOdd()
+    {
+        return $this->value[strlen($this->value) - 1] % 2 == 1;
+    }
+
+    /**
+     * Tests if a bit is set
+     *
+     * @return bool
+     */
+    public function testBit($x)
+    {
+        return bccomp(
+            bcmod($this->value, bcpow('2', $x + 1, 0)),
+            bcpow('2', $x, 0),
+            0
+        ) >= 0;
+    }
+
+    /**
+     * Is Negative?
+     *
+     * @return bool
+     */
+    public function isNegative()
+    {
+        return strlen($this->value) && $this->value[0] == '-';
+    }
+
+    /**
+     * Negate
+     *
+     * Given $k, returns -$k
+     *
+     * @return BCMath
+     */
+    public function negate()
+    {
+        $temp = clone $this;
+
+        if (!strlen($temp->value)) {
+            return $temp;
+        }
+
+        $temp->value = $temp->value[0] == '-' ?
+            substr($this->value, 1) :
+            '-' . $this->value;
+
+        return $temp;
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/BCMath/Base.php b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/BCMath/Base.php
new file mode 100644
index 0000000..fe21e04
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/BCMath/Base.php
@@ -0,0 +1,110 @@
+<?php
+
+/**
+ * Modular Exponentiation Engine
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Math\BigInteger\Engines\BCMath;
+
+use phpseclib3\Math\BigInteger\Engines\BCMath;
+
+/**
+ * Sliding Window Exponentiation Engine
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class Base extends BCMath
+{
+    /**
+     * Cache constants
+     *
+     * $cache[self::VARIABLE] tells us whether or not the cached data is still valid.
+     *
+     */
+    const VARIABLE = 0;
+    /**
+     * $cache[self::DATA] contains the cached data.
+     *
+     */
+    const DATA = 1;
+
+    /**
+     * Test for engine validity
+     *
+     * @return bool
+     */
+    public static function isValidEngine()
+    {
+        return static::class != __CLASS__;
+    }
+
+    /**
+     * Performs modular exponentiation.
+     *
+     * @param BCMath $x
+     * @param BCMath $e
+     * @param BCMath $n
+     * @param string $class
+     * @return BCMath
+     */
+    protected static function powModHelper(BCMath $x, BCMath $e, BCMath $n, $class)
+    {
+        if (empty($e->value)) {
+            $temp = new $class();
+            $temp->value = '1';
+            return $x->normalize($temp);
+        }
+
+        return $x->normalize(static::slidingWindow($x, $e, $n, $class));
+    }
+
+    /**
+     * Modular reduction preparation
+     *
+     * @param string $x
+     * @param string $n
+     * @param string $class
+     * @see self::slidingWindow()
+     * @return string
+     */
+    protected static function prepareReduce($x, $n, $class)
+    {
+        return static::reduce($x, $n);
+    }
+
+    /**
+     * Modular multiply
+     *
+     * @param string $x
+     * @param string $y
+     * @param string $n
+     * @param string $class
+     * @see self::slidingWindow()
+     * @return string
+     */
+    protected static function multiplyReduce($x, $y, $n, $class)
+    {
+        return static::reduce(bcmul($x, $y), $n);
+    }
+
+    /**
+     * Modular square
+     *
+     * @param string $x
+     * @param string $n
+     * @param string $class
+     * @see self::slidingWindow()
+     * @return string
+     */
+    protected static function squareReduce($x, $n, $class)
+    {
+        return static::reduce(bcmul($x, $x), $n);
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/BCMath/BuiltIn.php b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/BCMath/BuiltIn.php
new file mode 100644
index 0000000..b7ca8a2
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/BCMath/BuiltIn.php
@@ -0,0 +1,40 @@
+<?php
+
+/**
+ * Built-In BCMath Modular Exponentiation Engine
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Math\BigInteger\Engines\BCMath;
+
+use phpseclib3\Math\BigInteger\Engines\BCMath;
+
+/**
+ * Built-In BCMath Modular Exponentiation Engine
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class BuiltIn extends BCMath
+{
+    /**
+     * Performs modular exponentiation.
+     *
+     * @param BCMath $x
+     * @param BCMath $e
+     * @param BCMath $n
+     * @return BCMath
+     */
+    protected static function powModHelper(BCMath $x, BCMath $e, BCMath $n)
+    {
+        $temp = new BCMath();
+        $temp->value = bcpowmod($x->value, $e->value, $n->value);
+
+        return $x->normalize($temp);
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/BCMath/DefaultEngine.php b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/BCMath/DefaultEngine.php
new file mode 100644
index 0000000..b2d9fa9
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/BCMath/DefaultEngine.php
@@ -0,0 +1,25 @@
+<?php
+
+/**
+ * BCMath Default Modular Exponentiation Engine
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Math\BigInteger\Engines\BCMath;
+
+use phpseclib3\Math\BigInteger\Engines\BCMath\Reductions\Barrett;
+
+/**
+ * PHP Default Modular Exponentiation Engine
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class DefaultEngine extends Barrett
+{
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/BCMath/OpenSSL.php b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/BCMath/OpenSSL.php
new file mode 100644
index 0000000..aed9494
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/BCMath/OpenSSL.php
@@ -0,0 +1,25 @@
+<?php
+
+/**
+ * OpenSSL Modular Exponentiation Engine
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Math\BigInteger\Engines\BCMath;
+
+use phpseclib3\Math\BigInteger\Engines\OpenSSL as Progenitor;
+
+/**
+ * OpenSSL Modular Exponentiation Engine
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class OpenSSL extends Progenitor
+{
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/BCMath/Reductions/Barrett.php b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/BCMath/Reductions/Barrett.php
new file mode 100644
index 0000000..0fb7eae
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/BCMath/Reductions/Barrett.php
@@ -0,0 +1,187 @@
+<?php
+
+/**
+ * BCMath Barrett Modular Exponentiation Engine
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Math\BigInteger\Engines\BCMath\Reductions;
+
+use phpseclib3\Math\BigInteger\Engines\BCMath\Base;
+
+/**
+ * PHP Barrett Modular Exponentiation Engine
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class Barrett extends Base
+{
+    /**
+     * Cache constants
+     *
+     * $cache[self::VARIABLE] tells us whether or not the cached data is still valid.
+     *
+     */
+    const VARIABLE = 0;
+    /**
+     * $cache[self::DATA] contains the cached data.
+     *
+     */
+    const DATA = 1;
+
+    /**
+     * Barrett Modular Reduction
+     *
+     * See {@link http://www.cacr.math.uwaterloo.ca/hac/about/chap14.pdf#page=14 HAC 14.3.3} /
+     * {@link http://math.libtomcrypt.com/files/tommath.pdf#page=165 MPM 6.2.5} for more information.  Modified slightly,
+     * so as not to require negative numbers (initially, this script didn't support negative numbers).
+     *
+     * Employs "folding", as described at
+     * {@link http://www.cosic.esat.kuleuven.be/publications/thesis-149.pdf#page=66 thesis-149.pdf#page=66}.  To quote from
+     * it, "the idea [behind folding] is to find a value x' such that x (mod m) = x' (mod m), with x' being smaller than x."
+     *
+     * Unfortunately, the "Barrett Reduction with Folding" algorithm described in thesis-149.pdf is not, as written, all that
+     * usable on account of (1) its not using reasonable radix points as discussed in
+     * {@link http://math.libtomcrypt.com/files/tommath.pdf#page=162 MPM 6.2.2} and (2) the fact that, even with reasonable
+     * radix points, it only works when there are an even number of digits in the denominator.  The reason for (2) is that
+     * (x >> 1) + (x >> 1) != x / 2 + x / 2.  If x is even, they're the same, but if x is odd, they're not.  See the in-line
+     * comments for details.
+     *
+     * @param string $n
+     * @param string $m
+     * @return string
+     */
+    protected static function reduce($n, $m)
+    {
+        static $cache = [
+            self::VARIABLE => [],
+            self::DATA => []
+        ];
+
+        $m_length = strlen($m);
+
+        if (strlen($n) > 2 * $m_length) {
+            return bcmod($n, $m);
+        }
+
+        // if (m.length >> 1) + 2 <= m.length then m is too small and n can't be reduced
+        if ($m_length < 5) {
+            return self::regularBarrett($n, $m);
+        }
+        // n = 2 * m.length
+
+        if (($key = array_search($m, $cache[self::VARIABLE])) === false) {
+            $key = count($cache[self::VARIABLE]);
+            $cache[self::VARIABLE][] = $m;
+
+            $lhs = '1' . str_repeat('0', $m_length + ($m_length >> 1));
+            $u = bcdiv($lhs, $m, 0);
+            $m1 = bcsub($lhs, bcmul($u, $m));
+
+            $cache[self::DATA][] = [
+                'u' => $u, // m.length >> 1 (technically (m.length >> 1) + 1)
+                'm1' => $m1 // m.length
+            ];
+        } else {
+            extract($cache[self::DATA][$key]);
+        }
+
+        $cutoff = $m_length + ($m_length >> 1);
+
+        $lsd = substr($n, -$cutoff);
+        $msd = substr($n, 0, -$cutoff);
+
+        $temp = bcmul($msd, $m1); // m.length + (m.length >> 1)
+        $n = bcadd($lsd, $temp); // m.length + (m.length >> 1) + 1 (so basically we're adding two same length numbers)
+        //if ($m_length & 1) {
+        //    return self::regularBarrett($n, $m);
+        //}
+
+        // (m.length + (m.length >> 1) + 1) - (m.length - 1) == (m.length >> 1) + 2
+        $temp = substr($n, 0, -$m_length + 1);
+        // if even: ((m.length >> 1) + 2) + (m.length >> 1) == m.length + 2
+        // if odd:  ((m.length >> 1) + 2) + (m.length >> 1) == (m.length - 1) + 2 == m.length + 1
+        $temp = bcmul($temp, $u);
+        // if even: (m.length + 2) - ((m.length >> 1) + 1) = m.length - (m.length >> 1) + 1
+        // if odd:  (m.length + 1) - ((m.length >> 1) + 1) = m.length - (m.length >> 1)
+        $temp = substr($temp, 0, -($m_length >> 1) - 1);
+        // if even: (m.length - (m.length >> 1) + 1) + m.length = 2 * m.length - (m.length >> 1) + 1
+        // if odd:  (m.length - (m.length >> 1)) + m.length     = 2 * m.length - (m.length >> 1)
+        $temp = bcmul($temp, $m);
+
+        // at this point, if m had an odd number of digits, we'd be subtracting a 2 * m.length - (m.length >> 1) digit
+        // number from a m.length + (m.length >> 1) + 1 digit number.  ie. there'd be an extra digit and the while loop
+        // following this comment would loop a lot (hence our calling _regularBarrett() in that situation).
+
+        $result = bcsub($n, $temp);
+
+        //if (bccomp($result, '0') < 0) {
+        if ($result[0] == '-') {
+            $temp = '1' . str_repeat('0', $m_length + 1);
+            $result = bcadd($result, $temp);
+        }
+
+        while (bccomp($result, $m) >= 0) {
+            $result = bcsub($result, $m);
+        }
+
+        return $result;
+    }
+
+    /**
+     * (Regular) Barrett Modular Reduction
+     *
+     * For numbers with more than four digits BigInteger::_barrett() is faster.  The difference between that and this
+     * is that this function does not fold the denominator into a smaller form.
+     *
+     * @param string $x
+     * @param string $n
+     * @return string
+     */
+    private static function regularBarrett($x, $n)
+    {
+        static $cache = [
+            self::VARIABLE => [],
+            self::DATA => []
+        ];
+
+        $n_length = strlen($n);
+
+        if (strlen($x) > 2 * $n_length) {
+            return bcmod($x, $n);
+        }
+
+        if (($key = array_search($n, $cache[self::VARIABLE])) === false) {
+            $key = count($cache[self::VARIABLE]);
+            $cache[self::VARIABLE][] = $n;
+            $lhs = '1' . str_repeat('0', 2 * $n_length);
+            $cache[self::DATA][] = bcdiv($lhs, $n, 0);
+        }
+
+        $temp = substr($x, 0, -$n_length + 1);
+        $temp = bcmul($temp, $cache[self::DATA][$key]);
+        $temp = substr($temp, 0, -$n_length - 1);
+
+        $r1 = substr($x, -$n_length - 1);
+        $r2 = substr(bcmul($temp, $n), -$n_length - 1);
+        $result = bcsub($r1, $r2);
+
+        //if (bccomp($result, '0') < 0) {
+        if ($result[0] == '-') {
+            $q = '1' . str_repeat('0', $n_length + 1);
+            $result = bcadd($result, $q);
+        }
+
+        while (bccomp($result, $n) >= 0) {
+            $result = bcsub($result, $n);
+        }
+
+        return $result;
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/BCMath/Reductions/EvalBarrett.php b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/BCMath/Reductions/EvalBarrett.php
new file mode 100644
index 0000000..e033ba5
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/BCMath/Reductions/EvalBarrett.php
@@ -0,0 +1,108 @@
+<?php
+
+/**
+ * BCMath Dynamic Barrett Modular Exponentiation Engine
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Math\BigInteger\Engines\BCMath\Reductions;
+
+use phpseclib3\Math\BigInteger\Engines\BCMath;
+use phpseclib3\Math\BigInteger\Engines\BCMath\Base;
+
+/**
+ * PHP Barrett Modular Exponentiation Engine
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class EvalBarrett extends Base
+{
+    /**
+     * Custom Reduction Function
+     *
+     * @see self::generateCustomReduction
+     */
+    private static $custom_reduction;
+
+    /**
+     * Barrett Modular Reduction
+     *
+     * This calls a dynamically generated loop unrolled function that's specific to a given modulo.
+     * Array lookups are avoided as are if statements testing for how many bits the host OS supports, etc.
+     *
+     * @param string $n
+     * @param string $m
+     * @return string
+     */
+    protected static function reduce($n, $m)
+    {
+        $inline = self::$custom_reduction;
+        return $inline($n);
+    }
+
+    /**
+     * Generate Custom Reduction
+     *
+     * @param BCMath $m
+     * @param string $class
+     * @return callable|void
+     */
+    protected static function generateCustomReduction(BCMath $m, $class)
+    {
+        $m_length = strlen($m);
+
+        if ($m_length < 5) {
+            $code = 'return bcmod($x, $n);';
+            eval('$func = function ($n) { ' . $code . '};');
+            self::$custom_reduction = $func;
+            return;
+        }
+
+        $lhs = '1' . str_repeat('0', $m_length + ($m_length >> 1));
+        $u = bcdiv($lhs, $m, 0);
+        $m1 = bcsub($lhs, bcmul($u, $m));
+
+        $cutoff = $m_length + ($m_length >> 1);
+
+        $m = "'$m'";
+        $u = "'$u'";
+        $m1 = "'$m1'";
+
+        $code = '
+            $lsd = substr($n, -' . $cutoff . ');
+            $msd = substr($n, 0, -' . $cutoff . ');
+
+            $temp = bcmul($msd, ' . $m1 . ');
+            $n = bcadd($lsd, $temp);
+
+            $temp = substr($n, 0, ' . (-$m_length + 1) . ');
+            $temp = bcmul($temp, ' . $u . ');
+            $temp = substr($temp, 0, ' . (-($m_length >> 1) - 1) . ');
+            $temp = bcmul($temp, ' . $m . ');
+
+            $result = bcsub($n, $temp);
+
+            if ($result[0] == \'-\') {
+                $temp = \'1' . str_repeat('0', $m_length + 1) . '\';
+                $result = bcadd($result, $temp);
+            }
+
+            while (bccomp($result, ' . $m . ') >= 0) {
+                $result = bcsub($result, ' . $m . ');
+            }
+
+            return $result;';
+
+        eval('$func = function ($n) { ' . $code . '};');
+
+        self::$custom_reduction = $func;
+
+        return $func;
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/Engine.php b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/Engine.php
new file mode 100644
index 0000000..474abe1
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/Engine.php
@@ -0,0 +1,1299 @@
+<?php
+
+/**
+ * Base BigInteger Engine
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Math\BigInteger\Engines;
+
+use phpseclib3\Common\Functions\Strings;
+use phpseclib3\Crypt\Random;
+use phpseclib3\Exception\BadConfigurationException;
+use phpseclib3\Math\BigInteger;
+
+/**
+ * Base Engine.
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class Engine implements \JsonSerializable
+{
+    /* final protected */ const PRIMES = [
+        3,   5,   7,   11,  13,  17,  19,  23,  29,  31,  37,  41,  43,  47,  53,  59,
+        61,  67,  71,  73,  79,  83,  89,  97,  101, 103, 107, 109, 113, 127, 131, 137,
+        139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227,
+        229, 233, 239, 241, 251, 257, 263, 269, 271, 277, 281, 283, 293, 307, 311, 313,
+        317, 331, 337, 347, 349, 353, 359, 367, 373, 379, 383, 389, 397, 401, 409, 419,
+        421, 431, 433, 439, 443, 449, 457, 461, 463, 467, 479, 487, 491, 499, 503, 509,
+        521, 523, 541, 547, 557, 563, 569, 571, 577, 587, 593, 599, 601, 607, 613, 617,
+        619, 631, 641, 643, 647, 653, 659, 661, 673, 677, 683, 691, 701, 709, 719, 727,
+        733, 739, 743, 751, 757, 761, 769, 773, 787, 797, 809, 811, 821, 823, 827, 829,
+        839, 853, 857, 859, 863, 877, 881, 883, 887, 907, 911, 919, 929, 937, 941, 947,
+        953, 967, 971, 977, 983, 991, 997,
+    ];
+
+    /**
+     * BigInteger(0)
+     *
+     * @var array<class-string<static>, static>
+     */
+    protected static $zero = [];
+
+    /**
+     * BigInteger(1)
+     *
+     * @var array<class-string<static>, static>
+     */
+    protected static $one  = [];
+
+    /**
+     * BigInteger(2)
+     *
+     * @var array<class-string<static>, static>
+     */
+    protected static $two = [];
+
+    /**
+     * Modular Exponentiation Engine
+     *
+     * @var array<class-string<static>, class-string<static>>
+     */
+    protected static $modexpEngine;
+
+    /**
+     * Engine Validity Flag
+     *
+     * @var array<class-string<static>, bool>
+     */
+    protected static $isValidEngine;
+
+    /**
+     * Holds the BigInteger's value
+     *
+     * @var \GMP|string|array|int
+     */
+    protected $value;
+
+    /**
+     * Holds the BigInteger's sign
+     *
+     * @var bool
+     */
+    protected $is_negative;
+
+    /**
+     * Precision
+     *
+     * @see static::setPrecision()
+     * @var int
+     */
+    protected $precision = -1;
+
+    /**
+     * Precision Bitmask
+     *
+     * @see static::setPrecision()
+     * @var static|false
+     */
+    protected $bitmask = false;
+
+    /**
+     * Recurring Modulo Function
+     *
+     * @var callable
+     */
+    protected $reduce;
+
+    /**
+     * Mode independent value used for serialization.
+     *
+     * @see self::__sleep()
+     * @see self::__wakeup()
+     * @var string
+     */
+    protected $hex;
+
+    /**
+     * Default constructor
+     *
+     * @param int|numeric-string $x integer Base-10 number or base-$base number if $base set.
+     * @param int $base
+     */
+    public function __construct($x = 0, $base = 10)
+    {
+        if (!array_key_exists(static::class, static::$zero)) {
+            static::$zero[static::class] = null; // Placeholder to prevent infinite loop.
+            static::$zero[static::class] = new static(0);
+            static::$one[static::class] = new static(1);
+            static::$two[static::class] = new static(2);
+        }
+
+        // '0' counts as empty() but when the base is 256 '0' is equal to ord('0') or 48
+        // '0' is the only value like this per http://php.net/empty
+        if (empty($x) && (abs($base) != 256 || $x !== '0')) {
+            return;
+        }
+
+        switch ($base) {
+            case -256:
+            case 256:
+                if ($base == -256 && (ord($x[0]) & 0x80)) {
+                    $this->value = ~$x;
+                    $this->is_negative = true;
+                } else {
+                    $this->value = $x;
+                    $this->is_negative = false;
+                }
+
+                $this->initialize($base);
+
+                if ($this->is_negative) {
+                    $temp = $this->add(new static('-1'));
+                    $this->value = $temp->value;
+                }
+                break;
+            case -16:
+            case 16:
+                if ($base > 0 && $x[0] == '-') {
+                    $this->is_negative = true;
+                    $x = substr($x, 1);
+                }
+
+                $x = preg_replace('#^(?:0x)?([A-Fa-f0-9]*).*#s', '$1', $x);
+
+                $is_negative = false;
+                if ($base < 0 && hexdec($x[0]) >= 8) {
+                    $this->is_negative = $is_negative = true;
+                    $x = Strings::bin2hex(~Strings::hex2bin($x));
+                }
+
+                $this->value = $x;
+                $this->initialize($base);
+
+                if ($is_negative) {
+                    $temp = $this->add(new static('-1'));
+                    $this->value = $temp->value;
+                }
+                break;
+            case -10:
+            case 10:
+                // (?<!^)(?:-).*: find any -'s that aren't at the beginning and then any characters that follow that
+                // (?<=^|-)0*: find any 0's that are preceded by the start of the string or by a - (ie. octals)
+                // [^-0-9].*: find any non-numeric characters and then any characters that follow that
+                $this->value = preg_replace('#(?<!^)(?:-).*|(?<=^|-)0*|[^-0-9].*#s', '', $x);
+                if (!strlen($this->value) || $this->value == '-') {
+                    $this->value = '0';
+                }
+                $this->initialize($base);
+                break;
+            case -2:
+            case 2:
+                if ($base > 0 && $x[0] == '-') {
+                    $this->is_negative = true;
+                    $x = substr($x, 1);
+                }
+
+                $x = preg_replace('#^([01]*).*#s', '$1', $x);
+
+                $temp = new static(Strings::bits2bin($x), 128 * $base); // ie. either -16 or +16
+                $this->value = $temp->value;
+                if ($temp->is_negative) {
+                    $this->is_negative = true;
+                }
+
+                break;
+            default:
+                // base not supported, so we'll let $this == 0
+        }
+    }
+
+    /**
+     * Sets engine type.
+     *
+     * Throws an exception if the type is invalid
+     *
+     * @param class-string<Engine> $engine
+     */
+    public static function setModExpEngine($engine)
+    {
+        $fqengine = '\\phpseclib3\\Math\\BigInteger\\Engines\\' . static::ENGINE_DIR . '\\' . $engine;
+        if (!class_exists($fqengine) || !method_exists($fqengine, 'isValidEngine')) {
+            throw new \InvalidArgumentException("$engine is not a valid engine");
+        }
+        if (!$fqengine::isValidEngine()) {
+            throw new BadConfigurationException("$engine is not setup correctly on this system");
+        }
+        static::$modexpEngine[static::class] = $fqengine;
+    }
+
+    /**
+     * Converts a BigInteger to a byte string (eg. base-256).
+     *
+     * Negative numbers are saved as positive numbers, unless $twos_compliment is set to true, at which point, they're
+     * saved as two's compliment.
+     * @return string
+     */
+    protected function toBytesHelper()
+    {
+        $comparison = $this->compare(new static());
+        if ($comparison == 0) {
+            return $this->precision > 0 ? str_repeat(chr(0), ($this->precision + 1) >> 3) : '';
+        }
+
+        $temp = $comparison < 0 ? $this->add(new static(1)) : $this;
+        $bytes = $temp->toBytes();
+
+        if (!strlen($bytes)) { // eg. if the number we're trying to convert is -1
+            $bytes = chr(0);
+        }
+
+        if (ord($bytes[0]) & 0x80) {
+            $bytes = chr(0) . $bytes;
+        }
+
+        return $comparison < 0 ? ~$bytes : $bytes;
+    }
+
+    /**
+     * Converts a BigInteger to a hex string (eg. base-16).
+     *
+     * @param bool $twos_compliment
+     * @return string
+     */
+    public function toHex($twos_compliment = false)
+    {
+        return Strings::bin2hex($this->toBytes($twos_compliment));
+    }
+
+    /**
+     * Converts a BigInteger to a bit string (eg. base-2).
+     *
+     * Negative numbers are saved as positive numbers, unless $twos_compliment is set to true, at which point, they're
+     * saved as two's compliment.
+     *
+     * @param bool $twos_compliment
+     * @return string
+     */
+    public function toBits($twos_compliment = false)
+    {
+        $hex = $this->toBytes($twos_compliment);
+        $bits = Strings::bin2bits($hex);
+
+        $result = $this->precision > 0 ? substr($bits, -$this->precision) : ltrim($bits, '0');
+
+        if ($twos_compliment && $this->compare(new static()) > 0 && $this->precision <= 0) {
+            return '0' . $result;
+        }
+
+        return $result;
+    }
+
+    /**
+     * Calculates modular inverses.
+     *
+     * Say you have (30 mod 17 * x mod 17) mod 17 == 1.  x can be found using modular inverses.
+     *
+     * {@internal See {@link http://www.cacr.math.uwaterloo.ca/hac/about/chap14.pdf#page=21 HAC 14.64} for more information.}
+     *
+     * @param Engine $n
+     * @return static|false
+     */
+    protected function modInverseHelper(Engine $n)
+    {
+        // $x mod -$n == $x mod $n.
+        $n = $n->abs();
+
+        if ($this->compare(static::$zero[static::class]) < 0) {
+            $temp = $this->abs();
+            $temp = $temp->modInverse($n);
+            return $this->normalize($n->subtract($temp));
+        }
+
+        extract($this->extendedGCD($n));
+        /**
+         * @var Engine $gcd
+         * @var Engine $x
+         */
+
+        if (!$gcd->equals(static::$one[static::class])) {
+            return false;
+        }
+
+        $x = $x->compare(static::$zero[static::class]) < 0 ? $x->add($n) : $x;
+
+        return $this->compare(static::$zero[static::class]) < 0 ? $this->normalize($n->subtract($x)) : $this->normalize($x);
+    }
+
+    /**
+     * Serialize
+     *
+     * Will be called, automatically, when serialize() is called on a BigInteger object.
+     *
+     * @return array
+     */
+    public function __sleep()
+    {
+        $this->hex = $this->toHex(true);
+        $vars = ['hex'];
+        if ($this->precision > 0) {
+            $vars[] = 'precision';
+        }
+        return $vars;
+    }
+
+    /**
+     * Serialize
+     *
+     * Will be called, automatically, when unserialize() is called on a BigInteger object.
+     *
+     * @return void
+     */
+    public function __wakeup()
+    {
+        $temp = new static($this->hex, -16);
+        $this->value = $temp->value;
+        $this->is_negative = $temp->is_negative;
+        if ($this->precision > 0) {
+            // recalculate $this->bitmask
+            $this->setPrecision($this->precision);
+        }
+    }
+
+    /**
+     * JSON Serialize
+     *
+     * Will be called, automatically, when json_encode() is called on a BigInteger object.
+     *
+     * @return array{hex: string, precision?: int]
+     */
+    #[\ReturnTypeWillChange]
+    public function jsonSerialize()
+    {
+        $result = ['hex' => $this->toHex(true)];
+        if ($this->precision > 0) {
+            $result['precision'] = $this->precision;
+        }
+        return $result;
+    }
+
+    /**
+     * Converts a BigInteger to a base-10 number.
+     *
+     * @return string
+     */
+    public function __toString()
+    {
+        return $this->toString();
+    }
+
+    /**
+     *  __debugInfo() magic method
+     *
+     * Will be called, automatically, when print_r() or var_dump() are called
+     *
+     * @return array
+     */
+    public function __debugInfo()
+    {
+        $result = [
+            'value' => '0x' . $this->toHex(true),
+            'engine' => basename(static::class)
+        ];
+        return $this->precision > 0 ? $result + ['precision' => $this->precision] : $result;
+    }
+
+    /**
+     * Set Precision
+     *
+     * Some bitwise operations give different results depending on the precision being used.  Examples include left
+     * shift, not, and rotates.
+     *
+     * @param int $bits
+     */
+    public function setPrecision($bits)
+    {
+        if ($bits < 1) {
+            $this->precision = -1;
+            $this->bitmask = false;
+
+            return;
+        }
+        $this->precision = $bits;
+        $this->bitmask = static::setBitmask($bits);
+
+        $temp = $this->normalize($this);
+        $this->value = $temp->value;
+    }
+
+    /**
+     * Get Precision
+     *
+     * Returns the precision if it exists, -1 if it doesn't
+     *
+     * @return int
+     */
+    public function getPrecision()
+    {
+        return $this->precision;
+    }
+
+    /**
+     * Set Bitmask
+     * @return static
+     * @param int $bits
+     * @see self::setPrecision()
+     */
+    protected static function setBitmask($bits)
+    {
+        return new static(chr((1 << ($bits & 0x7)) - 1) . str_repeat(chr(0xFF), $bits >> 3), 256);
+    }
+
+    /**
+     * Logical Not
+     *
+     * @return Engine|string
+     */
+    public function bitwise_not()
+    {
+        // calculuate "not" without regard to $this->precision
+        // (will always result in a smaller number.  ie. ~1 isn't 1111 1110 - it's 0)
+        $temp = $this->toBytes();
+        if ($temp == '') {
+            return $this->normalize(static::$zero[static::class]);
+        }
+        $pre_msb = decbin(ord($temp[0]));
+        $temp = ~$temp;
+        $msb = decbin(ord($temp[0]));
+        if (strlen($msb) == 8) {
+            $msb = substr($msb, strpos($msb, '0'));
+        }
+        $temp[0] = chr(bindec($msb));
+
+        // see if we need to add extra leading 1's
+        $current_bits = strlen($pre_msb) + 8 * strlen($temp) - 8;
+        $new_bits = $this->precision - $current_bits;
+        if ($new_bits <= 0) {
+            return $this->normalize(new static($temp, 256));
+        }
+
+        // generate as many leading 1's as we need to.
+        $leading_ones = chr((1 << ($new_bits & 0x7)) - 1) . str_repeat(chr(0xFF), $new_bits >> 3);
+
+        self::base256_lshift($leading_ones, $current_bits);
+
+        $temp = str_pad($temp, strlen($leading_ones), chr(0), STR_PAD_LEFT);
+
+        return $this->normalize(new static($leading_ones | $temp, 256));
+    }
+
+    /**
+     * Logical Left Shift
+     *
+     * Shifts binary strings $shift bits, essentially multiplying by 2**$shift.
+     *
+     * @param string $x
+     * @param int $shift
+     * @return void
+     */
+    protected static function base256_lshift(&$x, $shift)
+    {
+        if ($shift == 0) {
+            return;
+        }
+
+        $num_bytes = $shift >> 3; // eg. floor($shift/8)
+        $shift &= 7; // eg. $shift % 8
+
+        $carry = 0;
+        for ($i = strlen($x) - 1; $i >= 0; --$i) {
+            $temp = ord($x[$i]) << $shift | $carry;
+            $x[$i] = chr($temp);
+            $carry = $temp >> 8;
+        }
+        $carry = ($carry != 0) ? chr($carry) : '';
+        $x = $carry . $x . str_repeat(chr(0), $num_bytes);
+    }
+
+    /**
+     * Logical Left Rotate
+     *
+     * Instead of the top x bits being dropped they're appended to the shifted bit string.
+     *
+     * @param int $shift
+     * @return Engine
+     */
+    public function bitwise_leftRotate($shift)
+    {
+        $bits = $this->toBytes();
+
+        if ($this->precision > 0) {
+            $precision = $this->precision;
+            if (static::FAST_BITWISE) {
+                $mask = $this->bitmask->toBytes();
+            } else {
+                $mask = $this->bitmask->subtract(new static(1));
+                $mask = $mask->toBytes();
+            }
+        } else {
+            $temp = ord($bits[0]);
+            for ($i = 0; $temp >> $i; ++$i) {
+            }
+            $precision = 8 * strlen($bits) - 8 + $i;
+            $mask = chr((1 << ($precision & 0x7)) - 1) . str_repeat(chr(0xFF), $precision >> 3);
+        }
+
+        if ($shift < 0) {
+            $shift += $precision;
+        }
+        $shift %= $precision;
+
+        if (!$shift) {
+            return clone $this;
+        }
+
+        $left = $this->bitwise_leftShift($shift);
+        $left = $left->bitwise_and(new static($mask, 256));
+        $right = $this->bitwise_rightShift($precision - $shift);
+        $result = static::FAST_BITWISE ? $left->bitwise_or($right) : $left->add($right);
+        return $this->normalize($result);
+    }
+
+    /**
+     * Logical Right Rotate
+     *
+     * Instead of the bottom x bits being dropped they're prepended to the shifted bit string.
+     *
+     * @param int $shift
+     * @return Engine
+     */
+    public function bitwise_rightRotate($shift)
+    {
+        return $this->bitwise_leftRotate(-$shift);
+    }
+
+    /**
+     * Returns the smallest and largest n-bit number
+     *
+     * @param int $bits
+     * @return array{min: static, max: static}
+     */
+    public static function minMaxBits($bits)
+    {
+        $bytes = $bits >> 3;
+        $min = str_repeat(chr(0), $bytes);
+        $max = str_repeat(chr(0xFF), $bytes);
+        $msb = $bits & 7;
+        if ($msb) {
+            $min = chr(1 << ($msb - 1)) . $min;
+            $max = chr((1 << $msb) - 1) . $max;
+        } else {
+            $min[0] = chr(0x80);
+        }
+        return [
+            'min' => new static($min, 256),
+            'max' => new static($max, 256)
+        ];
+    }
+
+    /**
+     * Return the size of a BigInteger in bits
+     *
+     * @return int
+     */
+    public function getLength()
+    {
+        return strlen($this->toBits());
+    }
+
+    /**
+     * Return the size of a BigInteger in bytes
+     *
+     * @return int
+     */
+    public function getLengthInBytes()
+    {
+        return (int) ceil($this->getLength() / 8);
+    }
+
+    /**
+     * Performs some pre-processing for powMod
+     *
+     * @param Engine $e
+     * @param Engine $n
+     * @return static|false
+     */
+    protected function powModOuter(Engine $e, Engine $n)
+    {
+        $n = $this->bitmask !== false && $this->bitmask->compare($n) < 0 ? $this->bitmask : $n->abs();
+
+        if ($e->compare(new static()) < 0) {
+            $e = $e->abs();
+
+            $temp = $this->modInverse($n);
+            if ($temp === false) {
+                return false;
+            }
+
+            return $this->normalize($temp->powModInner($e, $n));
+        }
+
+        if ($this->compare($n) > 0) {
+            list(, $temp) = $this->divide($n);
+            return $temp->powModInner($e, $n);
+        }
+
+        return $this->powModInner($e, $n);
+    }
+
+    /**
+     * Sliding Window k-ary Modular Exponentiation
+     *
+     * Based on {@link http://www.cacr.math.uwaterloo.ca/hac/about/chap14.pdf#page=27 HAC 14.85} /
+     * {@link http://math.libtomcrypt.com/files/tommath.pdf#page=210 MPM 7.7}.  In a departure from those algorithims,
+     * however, this function performs a modular reduction after every multiplication and squaring operation.
+     * As such, this function has the same preconditions that the reductions being used do.
+     *
+     * @template T of Engine
+     * @param Engine $x
+     * @param Engine $e
+     * @param Engine $n
+     * @param class-string<T> $class
+     * @return T
+     */
+    protected static function slidingWindow(Engine $x, Engine $e, Engine $n, $class)
+    {
+        static $window_ranges = [7, 25, 81, 241, 673, 1793]; // from BigInteger.java's oddModPow function
+        //static $window_ranges = [0, 7, 36, 140, 450, 1303, 3529]; // from MPM 7.3.1
+
+        $e_bits = $e->toBits();
+        $e_length = strlen($e_bits);
+
+        // calculate the appropriate window size.
+        // $window_size == 3 if $window_ranges is between 25 and 81, for example.
+        for ($i = 0, $window_size = 1; $i < count($window_ranges) && $e_length > $window_ranges[$i]; ++$window_size, ++$i) {
+        }
+
+        $n_value = $n->value;
+
+        if (method_exists(static::class, 'generateCustomReduction')) {
+            static::generateCustomReduction($n, $class);
+        }
+
+        // precompute $this^0 through $this^$window_size
+        $powers = [];
+        $powers[1] = static::prepareReduce($x->value, $n_value, $class);
+        $powers[2] = static::squareReduce($powers[1], $n_value, $class);
+
+        // we do every other number since substr($e_bits, $i, $j+1) (see below) is supposed to end
+        // in a 1.  ie. it's supposed to be odd.
+        $temp = 1 << ($window_size - 1);
+        for ($i = 1; $i < $temp; ++$i) {
+            $i2 = $i << 1;
+            $powers[$i2 + 1] = static::multiplyReduce($powers[$i2 - 1], $powers[2], $n_value, $class);
+        }
+
+        $result = new $class(1);
+        $result = static::prepareReduce($result->value, $n_value, $class);
+
+        for ($i = 0; $i < $e_length;) {
+            if (!$e_bits[$i]) {
+                $result = static::squareReduce($result, $n_value, $class);
+                ++$i;
+            } else {
+                for ($j = $window_size - 1; $j > 0; --$j) {
+                    if (!empty($e_bits[$i + $j])) {
+                        break;
+                    }
+                }
+
+                // eg. the length of substr($e_bits, $i, $j + 1)
+                for ($k = 0; $k <= $j; ++$k) {
+                    $result = static::squareReduce($result, $n_value, $class);
+                }
+
+                $result = static::multiplyReduce($result, $powers[bindec(substr($e_bits, $i, $j + 1))], $n_value, $class);
+
+                $i += $j + 1;
+            }
+        }
+
+        $temp = new $class();
+        $temp->value = static::reduce($result, $n_value, $class);
+
+        return $temp;
+    }
+
+    /**
+     * Generates a random number of a certain size
+     *
+     * Bit length is equal to $size
+     *
+     * @param int $size
+     * @return Engine
+     */
+    public static function random($size)
+    {
+        extract(static::minMaxBits($size));
+        /**
+         * @var BigInteger $min
+         * @var BigInteger $max
+         */
+        return static::randomRange($min, $max);
+    }
+
+    /**
+     * Generates a random prime number of a certain size
+     *
+     * Bit length is equal to $size
+     *
+     * @param int $size
+     * @return Engine
+     */
+    public static function randomPrime($size)
+    {
+        extract(static::minMaxBits($size));
+        /**
+         * @var static $min
+         * @var static $max
+         */
+        return static::randomRangePrime($min, $max);
+    }
+
+    /**
+     * Performs some pre-processing for randomRangePrime
+     *
+     * @param Engine $min
+     * @param Engine $max
+     * @return static|false
+     */
+    protected static function randomRangePrimeOuter(Engine $min, Engine $max)
+    {
+        $compare = $max->compare($min);
+
+        if (!$compare) {
+            return $min->isPrime() ? $min : false;
+        } elseif ($compare < 0) {
+            // if $min is bigger then $max, swap $min and $max
+            $temp = $max;
+            $max = $min;
+            $min = $temp;
+        }
+
+        $length = $max->getLength();
+        if ($length > 8196) {
+            throw new \RuntimeException("Generation of random prime numbers larger than 8196 has been disabled ($length)");
+        }
+
+        $x = static::randomRange($min, $max);
+
+        return static::randomRangePrimeInner($x, $min, $max);
+    }
+
+    /**
+     * Generate a random number between a range
+     *
+     * Returns a random number between $min and $max where $min and $max
+     * can be defined using one of the two methods:
+     *
+     * BigInteger::randomRange($min, $max)
+     * BigInteger::randomRange($max, $min)
+     *
+     * @param Engine $min
+     * @param Engine $max
+     * @return Engine
+     */
+    protected static function randomRangeHelper(Engine $min, Engine $max)
+    {
+        $compare = $max->compare($min);
+
+        if (!$compare) {
+            return $min;
+        } elseif ($compare < 0) {
+            // if $min is bigger then $max, swap $min and $max
+            $temp = $max;
+            $max = $min;
+            $min = $temp;
+        }
+
+        if (!isset(static::$one[static::class])) {
+            static::$one[static::class] = new static(1);
+        }
+
+        $max = $max->subtract($min->subtract(static::$one[static::class]));
+
+        $size = strlen(ltrim($max->toBytes(), chr(0)));
+
+        /*
+            doing $random % $max doesn't work because some numbers will be more likely to occur than others.
+            eg. if $max is 140 and $random's max is 255 then that'd mean both $random = 5 and $random = 145
+            would produce 5 whereas the only value of random that could produce 139 would be 139. ie.
+            not all numbers would be equally likely. some would be more likely than others.
+
+            creating a whole new random number until you find one that is within the range doesn't work
+            because, for sufficiently small ranges, the likelihood that you'd get a number within that range
+            would be pretty small. eg. with $random's max being 255 and if your $max being 1 the probability
+            would be pretty high that $random would be greater than $max.
+
+            phpseclib works around this using the technique described here:
+
+            http://crypto.stackexchange.com/questions/5708/creating-a-small-number-from-a-cryptographically-secure-random-string
+        */
+        $random_max = new static(chr(1) . str_repeat("\0", $size), 256);
+        $random = new static(Random::string($size), 256);
+
+        list($max_multiple) = $random_max->divide($max);
+        $max_multiple = $max_multiple->multiply($max);
+
+        while ($random->compare($max_multiple) >= 0) {
+            $random = $random->subtract($max_multiple);
+            $random_max = $random_max->subtract($max_multiple);
+            $random = $random->bitwise_leftShift(8);
+            $random = $random->add(new static(Random::string(1), 256));
+            $random_max = $random_max->bitwise_leftShift(8);
+            list($max_multiple) = $random_max->divide($max);
+            $max_multiple = $max_multiple->multiply($max);
+        }
+        list(, $random) = $random->divide($max);
+
+        return $random->add($min);
+    }
+
+    /**
+     * Performs some post-processing for randomRangePrime
+     *
+     * @param Engine $x
+     * @param Engine $min
+     * @param Engine $max
+     * @return static|false
+     */
+    protected static function randomRangePrimeInner(Engine $x, Engine $min, Engine $max)
+    {
+        if (!isset(static::$two[static::class])) {
+            static::$two[static::class] = new static('2');
+        }
+
+        $x->make_odd();
+        if ($x->compare($max) > 0) {
+            // if $x > $max then $max is even and if $min == $max then no prime number exists between the specified range
+            if ($min->equals($max)) {
+                return false;
+            }
+            $x = clone $min;
+            $x->make_odd();
+        }
+
+        $initial_x = clone $x;
+
+        while (true) {
+            if ($x->isPrime()) {
+                return $x;
+            }
+
+            $x = $x->add(static::$two[static::class]);
+
+            if ($x->compare($max) > 0) {
+                $x = clone $min;
+                if ($x->equals(static::$two[static::class])) {
+                    return $x;
+                }
+                $x->make_odd();
+            }
+
+            if ($x->equals($initial_x)) {
+                return false;
+            }
+        }
+    }
+
+    /**
+     * Sets the $t parameter for primality testing
+     *
+     * @return int
+     */
+    protected function setupIsPrime()
+    {
+        $length = $this->getLengthInBytes();
+
+        // see HAC 4.49 "Note (controlling the error probability)"
+        // @codingStandardsIgnoreStart
+             if ($length >= 163) { $t =  2; } // floor(1300 / 8)
+        else if ($length >= 106) { $t =  3; } // floor( 850 / 8)
+        else if ($length >= 81 ) { $t =  4; } // floor( 650 / 8)
+        else if ($length >= 68 ) { $t =  5; } // floor( 550 / 8)
+        else if ($length >= 56 ) { $t =  6; } // floor( 450 / 8)
+        else if ($length >= 50 ) { $t =  7; } // floor( 400 / 8)
+        else if ($length >= 43 ) { $t =  8; } // floor( 350 / 8)
+        else if ($length >= 37 ) { $t =  9; } // floor( 300 / 8)
+        else if ($length >= 31 ) { $t = 12; } // floor( 250 / 8)
+        else if ($length >= 25 ) { $t = 15; } // floor( 200 / 8)
+        else if ($length >= 18 ) { $t = 18; } // floor( 150 / 8)
+        else                     { $t = 27; }
+        // @codingStandardsIgnoreEnd
+
+        return $t;
+    }
+
+    /**
+     * Tests Primality
+     *
+     * Uses the {@link http://en.wikipedia.org/wiki/Miller%E2%80%93Rabin_primality_test Miller-Rabin primality test}.
+     * See {@link http://www.cacr.math.uwaterloo.ca/hac/about/chap4.pdf#page=8 HAC 4.24} for more info.
+     *
+     * @param int $t
+     * @return bool
+     */
+    protected function testPrimality($t)
+    {
+        if (!$this->testSmallPrimes()) {
+            return false;
+        }
+
+        $n   = clone $this;
+        $n_1 = $n->subtract(static::$one[static::class]);
+        $n_2 = $n->subtract(static::$two[static::class]);
+
+        $r = clone $n_1;
+        $s = static::scan1divide($r);
+
+        for ($i = 0; $i < $t; ++$i) {
+            $a = static::randomRange(static::$two[static::class], $n_2);
+            $y = $a->modPow($r, $n);
+
+            if (!$y->equals(static::$one[static::class]) && !$y->equals($n_1)) {
+                for ($j = 1; $j < $s && !$y->equals($n_1); ++$j) {
+                    $y = $y->modPow(static::$two[static::class], $n);
+                    if ($y->equals(static::$one[static::class])) {
+                        return false;
+                    }
+                }
+
+                if (!$y->equals($n_1)) {
+                    return false;
+                }
+            }
+        }
+
+        return true;
+    }
+
+    /**
+     * Checks a numer to see if it's prime
+     *
+     * Assuming the $t parameter is not set, this function has an error rate of 2**-80.  The main motivation for the
+     * $t parameter is distributability.  BigInteger::randomPrime() can be distributed across multiple pageloads
+     * on a website instead of just one.
+     *
+     * @param int|bool $t
+     * @return bool
+     */
+    public function isPrime($t = false)
+    {
+        // OpenSSL limits RSA keys to 16384 bits. The length of an RSA key is equal to the length of the modulo, which is
+        // produced by multiplying the primes p and q by one another. The largest number two 8196 bit primes can produce is
+        // a 16384 bit number so, basically, 8196 bit primes are the largest OpenSSL will generate and if that's the largest
+        // that it'll generate it also stands to reason that that's the largest you'll be able to test primality on
+        $length = $this->getLength();
+        if ($length > 8196) {
+            throw new \RuntimeException("Primality testing is not supported for numbers larger than 8196 bits ($length)");
+        }
+
+        if (!$t) {
+            $t = $this->setupIsPrime();
+        }
+        return $this->testPrimality($t);
+    }
+
+    /**
+     * Performs a few preliminary checks on root
+     *
+     * @param int $n
+     * @return Engine
+     */
+    protected function rootHelper($n)
+    {
+        if ($n < 1) {
+            return clone static::$zero[static::class];
+        } // we want positive exponents
+        if ($this->compare(static::$one[static::class]) < 0) {
+            return clone static::$zero[static::class];
+        } // we want positive numbers
+        if ($this->compare(static::$two[static::class]) < 0) {
+            return clone static::$one[static::class];
+        } // n-th root of 1 or 2 is 1
+
+        return $this->rootInner($n);
+    }
+
+    /**
+     * Calculates the nth root of a biginteger.
+     *
+     * Returns the nth root of a positive biginteger, where n defaults to 2
+     *
+     * {@internal This function is based off of {@link http://mathforum.org/library/drmath/view/52605.html this page} and {@link http://stackoverflow.com/questions/11242920/calculating-nth-root-with-bcmath-in-php this stackoverflow question}.}
+     *
+     * @param int $n
+     * @return Engine
+     */
+    protected function rootInner($n)
+    {
+        $n = new static($n);
+
+        // g is our guess number
+        $g = static::$two[static::class];
+        // while (g^n < num) g=g*2
+        while ($g->pow($n)->compare($this) < 0) {
+            $g = $g->multiply(static::$two[static::class]);
+        }
+        // if (g^n==num) num is a power of 2, we're lucky, end of job
+        // == 0 bccomp(bcpow($g, $n), $n->value)==0
+        if ($g->pow($n)->equals($this) > 0) {
+            $root = $g;
+            return $this->normalize($root);
+        }
+
+        // if we're here num wasn't a power of 2 :(
+        $og = $g; // og means original guess and here is our upper bound
+        $g = $g->divide(static::$two[static::class])[0]; // g is set to be our lower bound
+        $step = $og->subtract($g)->divide(static::$two[static::class])[0]; // step is the half of upper bound - lower bound
+        $g = $g->add($step); // we start at lower bound + step , basically in the middle of our interval
+
+        // while step>1
+
+        while ($step->compare(static::$one[static::class]) == 1) {
+            $guess = $g->pow($n);
+            $step = $step->divide(static::$two[static::class])[0];
+            $comp = $guess->compare($this); // compare our guess with real number
+            switch ($comp) {
+                case -1: // if guess is lower we add the new step
+                    $g = $g->add($step);
+                    break;
+                case 1: // if guess is higher we sub the new step
+                    $g = $g->subtract($step);
+                    break;
+                case 0: // if guess is exactly the num we're done, we return the value
+                    $root = $g;
+                    break 2;
+            }
+        }
+
+        if ($comp == 1) {
+            $g = $g->subtract($step);
+        }
+
+        // whatever happened, g is the closest guess we can make so return it
+        $root = $g;
+
+        return $this->normalize($root);
+    }
+
+    /**
+     * Calculates the nth root of a biginteger.
+     *
+     * @param int $n
+     * @return Engine
+     */
+    public function root($n = 2)
+    {
+        return $this->rootHelper($n);
+    }
+
+    /**
+     * Return the minimum BigInteger between an arbitrary number of BigIntegers.
+     *
+     * @param array $nums
+     * @return Engine
+     */
+    protected static function minHelper(array $nums)
+    {
+        if (count($nums) == 1) {
+            return $nums[0];
+        }
+        $min = $nums[0];
+        for ($i = 1; $i < count($nums); $i++) {
+            $min = $min->compare($nums[$i]) > 0 ? $nums[$i] : $min;
+        }
+        return $min;
+    }
+
+    /**
+     * Return the minimum BigInteger between an arbitrary number of BigIntegers.
+     *
+     * @param array $nums
+     * @return Engine
+     */
+    protected static function maxHelper(array $nums)
+    {
+        if (count($nums) == 1) {
+            return $nums[0];
+        }
+        $max = $nums[0];
+        for ($i = 1; $i < count($nums); $i++) {
+            $max = $max->compare($nums[$i]) < 0 ? $nums[$i] : $max;
+        }
+        return $max;
+    }
+
+    /**
+     * Create Recurring Modulo Function
+     *
+     * Sometimes it may be desirable to do repeated modulos with the same number outside of
+     * modular exponentiation
+     *
+     * @return callable
+     */
+    public function createRecurringModuloFunction()
+    {
+        $class = static::class;
+
+        $fqengine = !method_exists(static::$modexpEngine[static::class], 'reduce') ?
+            '\\phpseclib3\\Math\\BigInteger\\Engines\\' . static::ENGINE_DIR . '\\DefaultEngine' :
+            static::$modexpEngine[static::class];
+        if (method_exists($fqengine, 'generateCustomReduction')) {
+            $func = $fqengine::generateCustomReduction($this, static::class);
+            return eval('return function(' . static::class . ' $x) use ($func, $class) {
+                $r = new $class();
+                $r->value = $func($x->value);
+                return $r;
+            };');
+        }
+        $n = $this->value;
+        return eval('return function(' . static::class . ' $x) use ($n, $fqengine, $class) {
+            $r = new $class();
+            $r->value = $fqengine::reduce($x->value, $n, $class);
+            return $r;
+        };');
+    }
+
+    /**
+     * Calculates the greatest common divisor and Bezout's identity.
+     *
+     * @param Engine $n
+     * @return array{gcd: Engine, x: Engine, y: Engine}
+     */
+    protected function extendedGCDHelper(Engine $n)
+    {
+        $u = clone $this;
+        $v = clone $n;
+
+        $one = new static(1);
+        $zero = new static();
+
+        $a = clone $one;
+        $b = clone $zero;
+        $c = clone $zero;
+        $d = clone $one;
+
+        while (!$v->equals($zero)) {
+            list($q) = $u->divide($v);
+
+            $temp = $u;
+            $u = $v;
+            $v = $temp->subtract($v->multiply($q));
+
+            $temp = $a;
+            $a = $c;
+            $c = $temp->subtract($a->multiply($q));
+
+            $temp = $b;
+            $b = $d;
+            $d = $temp->subtract($b->multiply($q));
+        }
+
+        return [
+            'gcd' => $u,
+            'x' => $a,
+            'y' => $b
+        ];
+    }
+
+    /**
+     * Bitwise Split
+     *
+     * Splits BigInteger's into chunks of $split bits
+     *
+     * @param int $split
+     * @return Engine[]
+     */
+    public function bitwise_split($split)
+    {
+        if ($split < 1) {
+            throw new \RuntimeException('Offset must be greater than 1');
+        }
+
+        $mask = static::$one[static::class]->bitwise_leftShift($split)->subtract(static::$one[static::class]);
+
+        $num = clone $this;
+
+        $vals = [];
+        while (!$num->equals(static::$zero[static::class])) {
+            $vals[] = $num->bitwise_and($mask);
+            $num = $num->bitwise_rightShift($split);
+        }
+
+        return array_reverse($vals);
+    }
+
+    /**
+     * Logical And
+     *
+     * @param Engine $x
+     * @return Engine
+     */
+    protected function bitwiseAndHelper(Engine $x)
+    {
+        $left = $this->toBytes(true);
+        $right = $x->toBytes(true);
+
+        $length = max(strlen($left), strlen($right));
+
+        $left = str_pad($left, $length, chr(0), STR_PAD_LEFT);
+        $right = str_pad($right, $length, chr(0), STR_PAD_LEFT);
+
+        return $this->normalize(new static($left & $right, -256));
+    }
+
+    /**
+     * Logical Or
+     *
+     * @param Engine $x
+     * @return Engine
+     */
+    protected function bitwiseOrHelper(Engine $x)
+    {
+        $left = $this->toBytes(true);
+        $right = $x->toBytes(true);
+
+        $length = max(strlen($left), strlen($right));
+
+        $left = str_pad($left, $length, chr(0), STR_PAD_LEFT);
+        $right = str_pad($right, $length, chr(0), STR_PAD_LEFT);
+
+        return $this->normalize(new static($left | $right, -256));
+    }
+
+    /**
+     * Logical Exclusive Or
+     *
+     * @param Engine $x
+     * @return Engine
+     */
+    protected function bitwiseXorHelper(Engine $x)
+    {
+        $left = $this->toBytes(true);
+        $right = $x->toBytes(true);
+
+        $length = max(strlen($left), strlen($right));
+
+
+        $left = str_pad($left, $length, chr(0), STR_PAD_LEFT);
+        $right = str_pad($right, $length, chr(0), STR_PAD_LEFT);
+        return $this->normalize(new static($left ^ $right, -256));
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/GMP.php b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/GMP.php
new file mode 100644
index 0000000..f616362
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/GMP.php
@@ -0,0 +1,694 @@
+<?php
+
+/**
+ * GMP BigInteger Engine
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Math\BigInteger\Engines;
+
+use phpseclib3\Exception\BadConfigurationException;
+
+/**
+ * GMP Engine.
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+class GMP extends Engine
+{
+    /**
+     * Can Bitwise operations be done fast?
+     *
+     * @see parent::bitwise_leftRotate()
+     * @see parent::bitwise_rightRotate()
+     */
+    const FAST_BITWISE = true;
+
+    /**
+     * Engine Directory
+     *
+     * @see parent::setModExpEngine
+     */
+    const ENGINE_DIR = 'GMP';
+
+    /**
+     * Test for engine validity
+     *
+     * @return bool
+     * @see parent::__construct()
+     */
+    public static function isValidEngine()
+    {
+        return extension_loaded('gmp');
+    }
+
+    /**
+     * Default constructor
+     *
+     * @param mixed $x integer Base-10 number or base-$base number if $base set.
+     * @param int $base
+     * @see parent::__construct()
+     */
+    public function __construct($x = 0, $base = 10)
+    {
+        if (!isset(static::$isValidEngine[static::class])) {
+            static::$isValidEngine[static::class] = self::isValidEngine();
+        }
+        if (!static::$isValidEngine[static::class]) {
+            throw new BadConfigurationException('GMP is not setup correctly on this system');
+        }
+
+        if ($x instanceof \GMP) {
+            $this->value = $x;
+            return;
+        }
+
+        $this->value = gmp_init(0);
+
+        parent::__construct($x, $base);
+    }
+
+    /**
+     * Initialize a GMP BigInteger Engine instance
+     *
+     * @param int $base
+     * @see parent::__construct()
+     */
+    protected function initialize($base)
+    {
+        switch (abs($base)) {
+            case 256:
+                $this->value = gmp_import($this->value);
+                if ($this->is_negative) {
+                    $this->value = -$this->value;
+                }
+                break;
+            case 16:
+                $temp = $this->is_negative ? '-0x' . $this->value : '0x' . $this->value;
+                $this->value = gmp_init($temp);
+                break;
+            case 10:
+                $this->value = gmp_init(isset($this->value) ? $this->value : '0');
+        }
+    }
+
+    /**
+     * Converts a BigInteger to a base-10 number.
+     *
+     * @return string
+     */
+    public function toString()
+    {
+        return (string)$this->value;
+    }
+
+    /**
+     * Converts a BigInteger to a bit string (eg. base-2).
+     *
+     * Negative numbers are saved as positive numbers, unless $twos_compliment is set to true, at which point, they're
+     * saved as two's compliment.
+     *
+     * @param bool $twos_compliment
+     * @return string
+     */
+    public function toBits($twos_compliment = false)
+    {
+        $hex = $this->toHex($twos_compliment);
+
+        $bits = gmp_strval(gmp_init($hex, 16), 2);
+
+        if ($this->precision > 0) {
+            $bits = substr($bits, -$this->precision);
+        }
+
+        if ($twos_compliment && $this->compare(new static()) > 0 && $this->precision <= 0) {
+            return '0' . $bits;
+        }
+
+        return $bits;
+    }
+
+    /**
+     * Converts a BigInteger to a byte string (eg. base-256).
+     *
+     * @param bool $twos_compliment
+     * @return string
+     */
+    public function toBytes($twos_compliment = false)
+    {
+        if ($twos_compliment) {
+            return $this->toBytesHelper();
+        }
+
+        if (gmp_cmp($this->value, gmp_init(0)) == 0) {
+            return $this->precision > 0 ? str_repeat(chr(0), ($this->precision + 1) >> 3) : '';
+        }
+
+        $temp = gmp_export($this->value);
+
+        return $this->precision > 0 ?
+            substr(str_pad($temp, $this->precision >> 3, chr(0), STR_PAD_LEFT), -($this->precision >> 3)) :
+            ltrim($temp, chr(0));
+    }
+
+    /**
+     * Adds two BigIntegers.
+     *
+     * @param GMP $y
+     * @return GMP
+     */
+    public function add(GMP $y)
+    {
+        $temp = new self();
+        $temp->value = $this->value + $y->value;
+
+        return $this->normalize($temp);
+    }
+
+    /**
+     * Subtracts two BigIntegers.
+     *
+     * @param GMP $y
+     * @return GMP
+     */
+    public function subtract(GMP $y)
+    {
+        $temp = new self();
+        $temp->value = $this->value - $y->value;
+
+        return $this->normalize($temp);
+    }
+
+    /**
+     * Multiplies two BigIntegers.
+     *
+     * @param GMP $x
+     * @return GMP
+     */
+    public function multiply(GMP $x)
+    {
+        $temp = new self();
+        $temp->value = $this->value * $x->value;
+
+        return $this->normalize($temp);
+    }
+
+    /**
+     * Divides two BigIntegers.
+     *
+     * Returns an array whose first element contains the quotient and whose second element contains the
+     * "common residue".  If the remainder would be positive, the "common residue" and the remainder are the
+     * same.  If the remainder would be negative, the "common residue" is equal to the sum of the remainder
+     * and the divisor (basically, the "common residue" is the first positive modulo).
+     *
+     * @param GMP $y
+     * @return array{GMP, GMP}
+     */
+    public function divide(GMP $y)
+    {
+        $quotient = new self();
+        $remainder = new self();
+
+        list($quotient->value, $remainder->value) = gmp_div_qr($this->value, $y->value);
+
+        if (gmp_sign($remainder->value) < 0) {
+            $remainder->value = $remainder->value + gmp_abs($y->value);
+        }
+
+        return [$this->normalize($quotient), $this->normalize($remainder)];
+    }
+
+    /**
+     * Compares two numbers.
+     *
+     * Although one might think !$x->compare($y) means $x != $y, it, in fact, means the opposite.  The reason for this
+     * is demonstrated thusly:
+     *
+     * $x  > $y: $x->compare($y)  > 0
+     * $x  < $y: $x->compare($y)  < 0
+     * $x == $y: $x->compare($y) == 0
+     *
+     * Note how the same comparison operator is used.  If you want to test for equality, use $x->equals($y).
+     *
+     * {@internal Could return $this->subtract($x), but that's not as fast as what we do do.}
+     *
+     * @param GMP $y
+     * @return int in case < 0 if $this is less than $y; > 0 if $this is greater than $y, and 0 if they are equal.
+     * @see self::equals()
+     */
+    public function compare(GMP $y)
+    {
+        $r = gmp_cmp($this->value, $y->value);
+        if ($r < -1) {
+            $r = -1;
+        }
+        if ($r > 1) {
+            $r = 1;
+        }
+        return $r;
+    }
+
+    /**
+     * Tests the equality of two numbers.
+     *
+     * If you need to see if one number is greater than or less than another number, use BigInteger::compare()
+     *
+     * @param GMP $x
+     * @return bool
+     */
+    public function equals(GMP $x)
+    {
+        return $this->value == $x->value;
+    }
+
+    /**
+     * Calculates modular inverses.
+     *
+     * Say you have (30 mod 17 * x mod 17) mod 17 == 1.  x can be found using modular inverses.
+     *
+     * @param GMP $n
+     * @return false|GMP
+     */
+    public function modInverse(GMP $n)
+    {
+        $temp = new self();
+        $temp->value = gmp_invert($this->value, $n->value);
+
+        return $temp->value === false ? false : $this->normalize($temp);
+    }
+
+    /**
+     * Calculates the greatest common divisor and Bezout's identity.
+     *
+     * Say you have 693 and 609.  The GCD is 21.  Bezout's identity states that there exist integers x and y such that
+     * 693*x + 609*y == 21.  In point of fact, there are actually an infinite number of x and y combinations and which
+     * combination is returned is dependent upon which mode is in use.  See
+     * {@link http://en.wikipedia.org/wiki/B%C3%A9zout%27s_identity Bezout's identity - Wikipedia} for more information.
+     *
+     * @param GMP $n
+     * @return GMP[]
+     */
+    public function extendedGCD(GMP $n)
+    {
+        extract(gmp_gcdext($this->value, $n->value));
+
+        return [
+            'gcd' => $this->normalize(new self($g)),
+            'x' => $this->normalize(new self($s)),
+            'y' => $this->normalize(new self($t))
+        ];
+    }
+
+    /**
+     * Calculates the greatest common divisor
+     *
+     * Say you have 693 and 609.  The GCD is 21.
+     *
+     * @param GMP $n
+     * @return GMP
+     */
+    public function gcd(GMP $n)
+    {
+        $r = gmp_gcd($this->value, $n->value);
+        return $this->normalize(new self($r));
+    }
+
+    /**
+     * Absolute value.
+     *
+     * @return GMP
+     */
+    public function abs()
+    {
+        $temp = new self();
+        $temp->value = gmp_abs($this->value);
+
+        return $temp;
+    }
+
+    /**
+     * Logical And
+     *
+     * @param GMP $x
+     * @return GMP
+     */
+    public function bitwise_and(GMP $x)
+    {
+        $temp = new self();
+        $temp->value = $this->value & $x->value;
+
+        return $this->normalize($temp);
+    }
+
+    /**
+     * Logical Or
+     *
+     * @param GMP $x
+     * @return GMP
+     */
+    public function bitwise_or(GMP $x)
+    {
+        $temp = new self();
+        $temp->value = $this->value | $x->value;
+
+        return $this->normalize($temp);
+    }
+
+    /**
+     * Logical Exclusive Or
+     *
+     * @param GMP $x
+     * @return GMP
+     */
+    public function bitwise_xor(GMP $x)
+    {
+        $temp = new self();
+        $temp->value = $this->value ^ $x->value;
+
+        return $this->normalize($temp);
+    }
+
+    /**
+     * Logical Right Shift
+     *
+     * Shifts BigInteger's by $shift bits, effectively dividing by 2**$shift.
+     *
+     * @param int $shift
+     * @return GMP
+     */
+    public function bitwise_rightShift($shift)
+    {
+        // 0xFFFFFFFF >> 2 == -1 (on 32-bit systems)
+        // gmp_init('0xFFFFFFFF') >> 2 == gmp_init('0x3FFFFFFF')
+
+        $temp = new self();
+        $temp->value = $this->value >> $shift;
+
+        return $this->normalize($temp);
+    }
+
+    /**
+     * Logical Left Shift
+     *
+     * Shifts BigInteger's by $shift bits, effectively multiplying by 2**$shift.
+     *
+     * @param int $shift
+     * @return GMP
+     */
+    public function bitwise_leftShift($shift)
+    {
+        $temp = new self();
+        $temp->value = $this->value << $shift;
+
+        return $this->normalize($temp);
+    }
+
+    /**
+     * Performs modular exponentiation.
+     *
+     * @param GMP $e
+     * @param GMP $n
+     * @return GMP
+     */
+    public function modPow(GMP $e, GMP $n)
+    {
+        return $this->powModOuter($e, $n);
+    }
+
+    /**
+     * Performs modular exponentiation.
+     *
+     * Alias for modPow().
+     *
+     * @param GMP $e
+     * @param GMP $n
+     * @return GMP
+     */
+    public function powMod(GMP $e, GMP $n)
+    {
+        return $this->powModOuter($e, $n);
+    }
+
+    /**
+     * Performs modular exponentiation.
+     *
+     * @param GMP $e
+     * @param GMP $n
+     * @return GMP
+     */
+    protected function powModInner(GMP $e, GMP $n)
+    {
+        $class = static::$modexpEngine[static::class];
+        return $class::powModHelper($this, $e, $n);
+    }
+
+    /**
+     * Normalize
+     *
+     * Removes leading zeros and truncates (if necessary) to maintain the appropriate precision
+     *
+     * @param GMP $result
+     * @return GMP
+     */
+    protected function normalize(GMP $result)
+    {
+        $result->precision = $this->precision;
+        $result->bitmask = $this->bitmask;
+
+        if ($result->bitmask !== false) {
+            $flip = $result->value < 0;
+            if ($flip) {
+                $result->value = -$result->value;
+            }
+            $result->value = $result->value & $result->bitmask->value;
+            if ($flip) {
+                $result->value = -$result->value;
+            }
+        }
+
+        return $result;
+    }
+
+    /**
+     * Performs some post-processing for randomRangePrime
+     *
+     * @param Engine $x
+     * @param Engine $min
+     * @param Engine $max
+     * @return GMP
+     */
+    protected static function randomRangePrimeInner(Engine $x, Engine $min, Engine $max)
+    {
+        $p = gmp_nextprime($x->value);
+
+        if ($p <= $max->value) {
+            return new self($p);
+        }
+
+        if ($min->value != $x->value) {
+            $x = new self($x->value - 1);
+        }
+
+        return self::randomRangePrime($min, $x);
+    }
+
+    /**
+     * Generate a random prime number between a range
+     *
+     * If there's not a prime within the given range, false will be returned.
+     *
+     * @param GMP $min
+     * @param GMP $max
+     * @return false|GMP
+     */
+    public static function randomRangePrime(GMP $min, GMP $max)
+    {
+        return self::randomRangePrimeOuter($min, $max);
+    }
+
+    /**
+     * Generate a random number between a range
+     *
+     * Returns a random number between $min and $max where $min and $max
+     * can be defined using one of the two methods:
+     *
+     * BigInteger::randomRange($min, $max)
+     * BigInteger::randomRange($max, $min)
+     *
+     * @param GMP $min
+     * @param GMP $max
+     * @return GMP
+     */
+    public static function randomRange(GMP $min, GMP $max)
+    {
+        return self::randomRangeHelper($min, $max);
+    }
+
+    /**
+     * Make the current number odd
+     *
+     * If the current number is odd it'll be unchanged.  If it's even, one will be added to it.
+     *
+     * @see self::randomPrime()
+     */
+    protected function make_odd()
+    {
+        gmp_setbit($this->value, 0);
+    }
+
+    /**
+     * Tests Primality
+     *
+     * @param int $t
+     * @return bool
+     */
+    protected function testPrimality($t)
+    {
+        return gmp_prob_prime($this->value, $t) != 0;
+    }
+
+    /**
+     * Calculates the nth root of a biginteger.
+     *
+     * Returns the nth root of a positive biginteger, where n defaults to 2
+     *
+     * @param int $n
+     * @return GMP
+     */
+    protected function rootInner($n)
+    {
+        $root = new self();
+        $root->value = gmp_root($this->value, $n);
+        return $this->normalize($root);
+    }
+
+    /**
+     * Performs exponentiation.
+     *
+     * @param GMP $n
+     * @return GMP
+     */
+    public function pow(GMP $n)
+    {
+        $temp = new self();
+        $temp->value = $this->value ** $n->value;
+
+        return $this->normalize($temp);
+    }
+
+    /**
+     * Return the minimum BigInteger between an arbitrary number of BigIntegers.
+     *
+     * @param GMP ...$nums
+     * @return GMP
+     */
+    public static function min(GMP ...$nums)
+    {
+        return self::minHelper($nums);
+    }
+
+    /**
+     * Return the maximum BigInteger between an arbitrary number of BigIntegers.
+     *
+     * @param GMP ...$nums
+     * @return GMP
+     */
+    public static function max(GMP ...$nums)
+    {
+        return self::maxHelper($nums);
+    }
+
+    /**
+     * Tests BigInteger to see if it is between two integers, inclusive
+     *
+     * @param GMP $min
+     * @param GMP $max
+     * @return bool
+     */
+    public function between(GMP $min, GMP $max)
+    {
+        return $this->compare($min) >= 0 && $this->compare($max) <= 0;
+    }
+
+    /**
+     * Create Recurring Modulo Function
+     *
+     * Sometimes it may be desirable to do repeated modulos with the same number outside of
+     * modular exponentiation
+     *
+     * @return callable
+     */
+    public function createRecurringModuloFunction()
+    {
+        $temp = $this->value;
+        return function (GMP $x) use ($temp) {
+            return new GMP($x->value % $temp);
+        };
+    }
+
+    /**
+     * Scan for 1 and right shift by that amount
+     *
+     * ie. $s = gmp_scan1($n, 0) and $r = gmp_div_q($n, gmp_pow(gmp_init('2'), $s));
+     *
+     * @param GMP $r
+     * @return int
+     */
+    public static function scan1divide(GMP $r)
+    {
+        $s = gmp_scan1($r->value, 0);
+        $r->value >>= $s;
+        return $s;
+    }
+
+    /**
+     * Is Odd?
+     *
+     * @return bool
+     */
+    public function isOdd()
+    {
+        return gmp_testbit($this->value, 0);
+    }
+
+    /**
+     * Tests if a bit is set
+     *
+     * @return bool
+     */
+    public function testBit($x)
+    {
+        return gmp_testbit($this->value, $x);
+    }
+
+    /**
+     * Is Negative?
+     *
+     * @return bool
+     */
+    public function isNegative()
+    {
+        return gmp_sign($this->value) == -1;
+    }
+
+    /**
+     * Negate
+     *
+     * Given $k, returns -$k
+     *
+     * @return GMP
+     */
+    public function negate()
+    {
+        $temp = clone $this;
+        $temp->value = -$this->value;
+
+        return $temp;
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/GMP/DefaultEngine.php b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/GMP/DefaultEngine.php
new file mode 100644
index 0000000..bc219fb
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/GMP/DefaultEngine.php
@@ -0,0 +1,40 @@
+<?php
+
+/**
+ * GMP Modular Exponentiation Engine
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Math\BigInteger\Engines\GMP;
+
+use phpseclib3\Math\BigInteger\Engines\GMP;
+
+/**
+ * GMP Modular Exponentiation Engine
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class DefaultEngine extends GMP
+{
+    /**
+     * Performs modular exponentiation.
+     *
+     * @param GMP $x
+     * @param GMP $e
+     * @param GMP $n
+     * @return GMP
+     */
+    protected static function powModHelper(GMP $x, GMP $e, GMP $n)
+    {
+        $temp = new GMP();
+        $temp->value = gmp_powm($x->value, $e->value, $n->value);
+
+        return $x->normalize($temp);
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/OpenSSL.php b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/OpenSSL.php
new file mode 100644
index 0000000..e33a9f1
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/OpenSSL.php
@@ -0,0 +1,68 @@
+<?php
+
+/**
+ * OpenSSL Modular Exponentiation Engine
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Math\BigInteger\Engines;
+
+use phpseclib3\Crypt\RSA\Formats\Keys\PKCS8;
+use phpseclib3\Math\BigInteger;
+
+/**
+ * OpenSSL Modular Exponentiation Engine
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class OpenSSL
+{
+    /**
+     * Test for engine validity
+     *
+     * @return bool
+     */
+    public static function isValidEngine()
+    {
+        return extension_loaded('openssl') && static::class != __CLASS__;
+    }
+
+    /**
+     * Performs modular exponentiation.
+     *
+     * @param Engine $x
+     * @param Engine $e
+     * @param Engine $n
+     * @return Engine
+     */
+    public static function powModHelper(Engine $x, Engine $e, Engine $n)
+    {
+        if ($n->getLengthInBytes() < 31 || $n->getLengthInBytes() > 16384) {
+            throw new \OutOfRangeException('Only modulo between 31 and 16384 bits are accepted');
+        }
+
+        $key = PKCS8::savePublicKey(
+            new BigInteger($n),
+            new BigInteger($e)
+        );
+
+        $plaintext = str_pad($x->toBytes(), $n->getLengthInBytes(), "\0", STR_PAD_LEFT);
+
+        // this is easily prone to failure. if the modulo is a multiple of 2 or 3 or whatever it
+        // won't work and you'll get a "failure: error:0906D06C:PEM routines:PEM_read_bio:no start line"
+        // error. i suppose, for even numbers, we could do what PHP\Montgomery.php does, but then what
+        // about odd numbers divisible by 3, by 5, etc?
+        if (!openssl_public_encrypt($plaintext, $result, $key, OPENSSL_NO_PADDING)) {
+            throw new \UnexpectedValueException(openssl_error_string());
+        }
+
+        $class = get_class($x);
+        return new $class($result, 256);
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/PHP.php b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/PHP.php
new file mode 100644
index 0000000..2d89595
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/PHP.php
@@ -0,0 +1,1357 @@
+<?php
+
+/**
+ * Pure-PHP BigInteger Engine
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Math\BigInteger\Engines;
+
+use phpseclib3\Common\Functions\Strings;
+use phpseclib3\Exception\BadConfigurationException;
+
+/**
+ * Pure-PHP Engine.
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class PHP extends Engine
+{
+    /**#@+
+     * Array constants
+     *
+     * Rather than create a thousands and thousands of new BigInteger objects in repeated function calls to add() and
+     * multiply() or whatever, we'll just work directly on arrays, taking them in as parameters and returning them.
+     *
+     */
+    /**
+     * $result[self::VALUE] contains the value.
+     */
+    const VALUE = 0;
+    /**
+     * $result[self::SIGN] contains the sign.
+     */
+    const SIGN = 1;
+    /**#@-*/
+
+    /**
+     * Karatsuba Cutoff
+     *
+     * At what point do we switch between Karatsuba multiplication and schoolbook long multiplication?
+     *
+     */
+    const KARATSUBA_CUTOFF = 25;
+
+    /**
+     * Can Bitwise operations be done fast?
+     *
+     * @see parent::bitwise_leftRotate()
+     * @see parent::bitwise_rightRotate()
+     */
+    const FAST_BITWISE = true;
+
+    /**
+     * Engine Directory
+     *
+     * @see parent::setModExpEngine
+     */
+    const ENGINE_DIR = 'PHP';
+
+    /**
+     * Default constructor
+     *
+     * @param mixed $x integer Base-10 number or base-$base number if $base set.
+     * @param int $base
+     * @return PHP
+     * @see parent::__construct()
+     */
+    public function __construct($x = 0, $base = 10)
+    {
+        if (!isset(static::$isValidEngine[static::class])) {
+            static::$isValidEngine[static::class] = static::isValidEngine();
+        }
+        if (!static::$isValidEngine[static::class]) {
+            throw new BadConfigurationException(static::class . ' is not setup correctly on this system');
+        }
+
+        $this->value = [];
+        parent::__construct($x, $base);
+    }
+
+    /**
+     * Initialize a PHP BigInteger Engine instance
+     *
+     * @param int $base
+     * @see parent::__construct()
+     */
+    protected function initialize($base)
+    {
+        switch (abs($base)) {
+            case 16:
+                $x = (strlen($this->value) & 1) ? '0' . $this->value : $this->value;
+                $temp = new static(Strings::hex2bin($x), 256);
+                $this->value = $temp->value;
+                break;
+            case 10:
+                $temp = new static();
+
+                $multiplier = new static();
+                $multiplier->value = [static::MAX10];
+
+                $x = $this->value;
+
+                if ($x[0] == '-') {
+                    $this->is_negative = true;
+                    $x = substr($x, 1);
+                }
+
+                $x = str_pad(
+                    $x,
+                    strlen($x) + ((static::MAX10LEN - 1) * strlen($x)) % static::MAX10LEN,
+                    0,
+                    STR_PAD_LEFT
+                );
+                while (strlen($x)) {
+                    $temp = $temp->multiply($multiplier);
+                    $temp = $temp->add(new static($this->int2bytes(substr($x, 0, static::MAX10LEN)), 256));
+                    $x = substr($x, static::MAX10LEN);
+                }
+
+                $this->value = $temp->value;
+        }
+    }
+
+    /**
+     * Pads strings so that unpack may be used on them
+     *
+     * @param string $str
+     * @return string
+     */
+    protected function pad($str)
+    {
+        $length = strlen($str);
+
+        $pad = 4 - (strlen($str) % 4);
+
+        return str_pad($str, $length + $pad, "\0", STR_PAD_LEFT);
+    }
+
+    /**
+     * Converts a BigInteger to a base-10 number.
+     *
+     * @return string
+     */
+    public function toString()
+    {
+        if (!count($this->value)) {
+            return '0';
+        }
+
+        $temp = clone $this;
+        $temp->bitmask = false;
+        $temp->is_negative = false;
+
+        $divisor = new static();
+        $divisor->value = [static::MAX10];
+        $result = '';
+        while (count($temp->value)) {
+            list($temp, $mod) = $temp->divide($divisor);
+            $result = str_pad(
+                isset($mod->value[0]) ? $mod->value[0] : '',
+                static::MAX10LEN,
+                '0',
+                STR_PAD_LEFT
+            ) . $result;
+        }
+        $result = ltrim($result, '0');
+        if (empty($result)) {
+            $result = '0';
+        }
+
+        if ($this->is_negative) {
+            $result = '-' . $result;
+        }
+
+        return $result;
+    }
+
+    /**
+     * Converts a BigInteger to a byte string (eg. base-256).
+     *
+     * @param bool $twos_compliment
+     * @return string
+     */
+    public function toBytes($twos_compliment = false)
+    {
+        if ($twos_compliment) {
+            return $this->toBytesHelper();
+        }
+
+        if (!count($this->value)) {
+            return $this->precision > 0 ? str_repeat(chr(0), ($this->precision + 1) >> 3) : '';
+        }
+
+        $result = $this->bitwise_small_split(8);
+        $result = implode('', array_map('chr', $result));
+
+        return $this->precision > 0 ?
+            str_pad(
+                substr($result, -(($this->precision + 7) >> 3)),
+                ($this->precision + 7) >> 3,
+                chr(0),
+                STR_PAD_LEFT
+            ) :
+            $result;
+    }
+
+    /**
+     * Performs addition.
+     *
+     * @param array $x_value
+     * @param bool $x_negative
+     * @param array $y_value
+     * @param bool $y_negative
+     * @return array
+     */
+    protected static function addHelper(array $x_value, $x_negative, array $y_value, $y_negative)
+    {
+        $x_size = count($x_value);
+        $y_size = count($y_value);
+
+        if ($x_size == 0) {
+            return [
+                self::VALUE => $y_value,
+                self::SIGN => $y_negative
+            ];
+        } elseif ($y_size == 0) {
+            return [
+                self::VALUE => $x_value,
+                self::SIGN => $x_negative
+            ];
+        }
+
+        // subtract, if appropriate
+        if ($x_negative != $y_negative) {
+            if ($x_value == $y_value) {
+                return [
+                    self::VALUE => [],
+                    self::SIGN => false
+                ];
+            }
+
+            $temp = self::subtractHelper($x_value, false, $y_value, false);
+            $temp[self::SIGN] = self::compareHelper($x_value, false, $y_value, false) > 0 ?
+                $x_negative : $y_negative;
+
+            return $temp;
+        }
+
+        if ($x_size < $y_size) {
+            $size = $x_size;
+            $value = $y_value;
+        } else {
+            $size = $y_size;
+            $value = $x_value;
+        }
+
+        $value[count($value)] = 0; // just in case the carry adds an extra digit
+
+        $carry = 0;
+        for ($i = 0, $j = 1; $j < $size; $i += 2, $j += 2) {
+            //$sum = $x_value[$j] * static::BASE_FULL + $x_value[$i] + $y_value[$j] * static::BASE_FULL + $y_value[$i] + $carry;
+            $sum = ($x_value[$j] + $y_value[$j]) * static::BASE_FULL + $x_value[$i] + $y_value[$i] + $carry;
+            $carry = $sum >= static::MAX_DIGIT2; // eg. floor($sum / 2**52); only possible values (in any base) are 0 and 1
+            $sum = $carry ? $sum - static::MAX_DIGIT2 : $sum;
+
+            $temp = static::BASE === 26 ? intval($sum / 0x4000000) : ($sum >> 31);
+
+            $value[$i] = (int)($sum - static::BASE_FULL * $temp); // eg. a faster alternative to fmod($sum, 0x4000000)
+            $value[$j] = $temp;
+        }
+
+        if ($j == $size) { // ie. if $y_size is odd
+            $sum = $x_value[$i] + $y_value[$i] + $carry;
+            $carry = $sum >= static::BASE_FULL;
+            $value[$i] = $carry ? $sum - static::BASE_FULL : $sum;
+            ++$i; // ie. let $i = $j since we've just done $value[$i]
+        }
+
+        if ($carry) {
+            for (; $value[$i] == static::MAX_DIGIT; ++$i) {
+                $value[$i] = 0;
+            }
+            ++$value[$i];
+        }
+
+        return [
+            self::VALUE => self::trim($value),
+            self::SIGN => $x_negative
+        ];
+    }
+
+    /**
+     * Performs subtraction.
+     *
+     * @param array $x_value
+     * @param bool $x_negative
+     * @param array $y_value
+     * @param bool $y_negative
+     * @return array
+     */
+    public static function subtractHelper(array $x_value, $x_negative, array $y_value, $y_negative)
+    {
+        $x_size = count($x_value);
+        $y_size = count($y_value);
+
+        if ($x_size == 0) {
+            return [
+                self::VALUE => $y_value,
+                self::SIGN => !$y_negative
+            ];
+        } elseif ($y_size == 0) {
+            return [
+                self::VALUE => $x_value,
+                self::SIGN => $x_negative
+            ];
+        }
+
+        // add, if appropriate (ie. -$x - +$y or +$x - -$y)
+        if ($x_negative != $y_negative) {
+            $temp = self::addHelper($x_value, false, $y_value, false);
+            $temp[self::SIGN] = $x_negative;
+
+            return $temp;
+        }
+
+        $diff = self::compareHelper($x_value, $x_negative, $y_value, $y_negative);
+
+        if (!$diff) {
+            return [
+                self::VALUE => [],
+                self::SIGN => false
+            ];
+        }
+
+        // switch $x and $y around, if appropriate.
+        if ((!$x_negative && $diff < 0) || ($x_negative && $diff > 0)) {
+            $temp = $x_value;
+            $x_value = $y_value;
+            $y_value = $temp;
+
+            $x_negative = !$x_negative;
+
+            $x_size = count($x_value);
+            $y_size = count($y_value);
+        }
+
+        // at this point, $x_value should be at least as big as - if not bigger than - $y_value
+
+        $carry = 0;
+        for ($i = 0, $j = 1; $j < $y_size; $i += 2, $j += 2) {
+            $sum = ($x_value[$j] - $y_value[$j]) * static::BASE_FULL + $x_value[$i] - $y_value[$i] - $carry;
+
+            $carry = $sum < 0; // eg. floor($sum / 2**52); only possible values (in any base) are 0 and 1
+            $sum = $carry ? $sum + static::MAX_DIGIT2 : $sum;
+
+            $temp = static::BASE === 26 ? intval($sum / 0x4000000) : ($sum >> 31);
+
+            $x_value[$i] = (int)($sum - static::BASE_FULL * $temp);
+            $x_value[$j] = $temp;
+        }
+
+        if ($j == $y_size) { // ie. if $y_size is odd
+            $sum = $x_value[$i] - $y_value[$i] - $carry;
+            $carry = $sum < 0;
+            $x_value[$i] = $carry ? $sum + static::BASE_FULL : $sum;
+            ++$i;
+        }
+
+        if ($carry) {
+            for (; !$x_value[$i]; ++$i) {
+                $x_value[$i] = static::MAX_DIGIT;
+            }
+            --$x_value[$i];
+        }
+
+        return [
+            self::VALUE => self::trim($x_value),
+            self::SIGN => $x_negative
+        ];
+    }
+
+    /**
+     * Performs multiplication.
+     *
+     * @param array $x_value
+     * @param bool $x_negative
+     * @param array $y_value
+     * @param bool $y_negative
+     * @return array
+     */
+    protected static function multiplyHelper(array $x_value, $x_negative, array $y_value, $y_negative)
+    {
+        //if ( $x_value == $y_value ) {
+        //    return [
+        //        self::VALUE => self::square($x_value),
+        //        self::SIGN => $x_sign != $y_value
+        //    ];
+        //}
+
+        $x_length = count($x_value);
+        $y_length = count($y_value);
+
+        if (!$x_length || !$y_length) { // a 0 is being multiplied
+            return [
+                self::VALUE => [],
+                self::SIGN => false
+            ];
+        }
+
+        return [
+            self::VALUE => min($x_length, $y_length) < 2 * self::KARATSUBA_CUTOFF ?
+                self::trim(self::regularMultiply($x_value, $y_value)) :
+                self::trim(self::karatsuba($x_value, $y_value)),
+            self::SIGN => $x_negative != $y_negative
+        ];
+    }
+
+    /**
+     * Performs Karatsuba multiplication on two BigIntegers
+     *
+     * See {@link http://en.wikipedia.org/wiki/Karatsuba_algorithm Karatsuba algorithm} and
+     * {@link http://math.libtomcrypt.com/files/tommath.pdf#page=120 MPM 5.2.3}.
+     *
+     * @param array $x_value
+     * @param array $y_value
+     * @return array
+     */
+    private static function karatsuba(array $x_value, array $y_value)
+    {
+        $m = min(count($x_value) >> 1, count($y_value) >> 1);
+
+        if ($m < self::KARATSUBA_CUTOFF) {
+            return self::regularMultiply($x_value, $y_value);
+        }
+
+        $x1 = array_slice($x_value, $m);
+        $x0 = array_slice($x_value, 0, $m);
+        $y1 = array_slice($y_value, $m);
+        $y0 = array_slice($y_value, 0, $m);
+
+        $z2 = self::karatsuba($x1, $y1);
+        $z0 = self::karatsuba($x0, $y0);
+
+        $z1 = self::addHelper($x1, false, $x0, false);
+        $temp = self::addHelper($y1, false, $y0, false);
+        $z1 = self::karatsuba($z1[self::VALUE], $temp[self::VALUE]);
+        $temp = self::addHelper($z2, false, $z0, false);
+        $z1 = self::subtractHelper($z1, false, $temp[self::VALUE], false);
+
+        $z2 = array_merge(array_fill(0, 2 * $m, 0), $z2);
+        $z1[self::VALUE] = array_merge(array_fill(0, $m, 0), $z1[self::VALUE]);
+
+        $xy = self::addHelper($z2, false, $z1[self::VALUE], $z1[self::SIGN]);
+        $xy = self::addHelper($xy[self::VALUE], $xy[self::SIGN], $z0, false);
+
+        return $xy[self::VALUE];
+    }
+
+    /**
+     * Performs long multiplication on two BigIntegers
+     *
+     * Modeled after 'multiply' in MutableBigInteger.java.
+     *
+     * @param array $x_value
+     * @param array $y_value
+     * @return array
+     */
+    protected static function regularMultiply(array $x_value, array $y_value)
+    {
+        $x_length = count($x_value);
+        $y_length = count($y_value);
+
+        if (!$x_length || !$y_length) { // a 0 is being multiplied
+            return [];
+        }
+
+        $product_value = self::array_repeat(0, $x_length + $y_length);
+
+        // the following for loop could be removed if the for loop following it
+        // (the one with nested for loops) initially set $i to 0, but
+        // doing so would also make the result in one set of unnecessary adds,
+        // since on the outermost loops first pass, $product->value[$k] is going
+        // to always be 0
+
+        $carry = 0;
+        for ($j = 0; $j < $x_length; ++$j) { // ie. $i = 0
+            $temp = $x_value[$j] * $y_value[0] + $carry; // $product_value[$k] == 0
+            $carry = static::BASE === 26 ? intval($temp / 0x4000000) : ($temp >> 31);
+            $product_value[$j] = (int)($temp - static::BASE_FULL * $carry);
+        }
+
+        $product_value[$j] = $carry;
+
+        // the above for loop is what the previous comment was talking about.  the
+        // following for loop is the "one with nested for loops"
+        for ($i = 1; $i < $y_length; ++$i) {
+            $carry = 0;
+
+            for ($j = 0, $k = $i; $j < $x_length; ++$j, ++$k) {
+                $temp = $product_value[$k] + $x_value[$j] * $y_value[$i] + $carry;
+                $carry = static::BASE === 26 ? intval($temp / 0x4000000) : ($temp >> 31);
+                $product_value[$k] = (int)($temp - static::BASE_FULL * $carry);
+            }
+
+            $product_value[$k] = $carry;
+        }
+
+        return $product_value;
+    }
+
+    /**
+     * Divides two BigIntegers.
+     *
+     * Returns an array whose first element contains the quotient and whose second element contains the
+     * "common residue".  If the remainder would be positive, the "common residue" and the remainder are the
+     * same.  If the remainder would be negative, the "common residue" is equal to the sum of the remainder
+     * and the divisor (basically, the "common residue" is the first positive modulo).
+     *
+     * @return array{static, static}
+     * @internal This function is based off of
+     *     {@link http://www.cacr.math.uwaterloo.ca/hac/about/chap14.pdf#page=9 HAC 14.20}.
+     */
+    protected function divideHelper(PHP $y)
+    {
+        if (count($y->value) == 1) {
+            list($q, $r) = $this->divide_digit($this->value, $y->value[0]);
+            $quotient = new static();
+            $remainder = new static();
+            $quotient->value = $q;
+            $remainder->value = [$r];
+            $quotient->is_negative = $this->is_negative != $y->is_negative;
+            return [$this->normalize($quotient), $this->normalize($remainder)];
+        }
+
+        $x = clone $this;
+        $y = clone $y;
+
+        $x_sign = $x->is_negative;
+        $y_sign = $y->is_negative;
+
+        $x->is_negative = $y->is_negative = false;
+
+        $diff = $x->compare($y);
+
+        if (!$diff) {
+            $temp = new static();
+            $temp->value = [1];
+            $temp->is_negative = $x_sign != $y_sign;
+            return [$this->normalize($temp), $this->normalize(static::$zero[static::class])];
+        }
+
+        if ($diff < 0) {
+            // if $x is negative, "add" $y.
+            if ($x_sign) {
+                $x = $y->subtract($x);
+            }
+            return [$this->normalize(static::$zero[static::class]), $this->normalize($x)];
+        }
+
+        // normalize $x and $y as described in HAC 14.23 / 14.24
+        $msb = $y->value[count($y->value) - 1];
+        for ($shift = 0; !($msb & static::MSB); ++$shift) {
+            $msb <<= 1;
+        }
+        $x->lshift($shift);
+        $y->lshift($shift);
+        $y_value = &$y->value;
+
+        $x_max = count($x->value) - 1;
+        $y_max = count($y->value) - 1;
+
+        $quotient = new static();
+        $quotient_value = &$quotient->value;
+        $quotient_value = self::array_repeat(0, $x_max - $y_max + 1);
+
+        static $temp, $lhs, $rhs;
+        if (!isset($temp)) {
+            $temp = new static();
+            $lhs = new static();
+            $rhs = new static();
+        }
+        if (static::class != get_class($temp)) {
+            $temp = new static();
+            $lhs = new static();
+            $rhs = new static();
+        }
+        $temp_value = &$temp->value;
+        $rhs_value =  &$rhs->value;
+
+        // $temp = $y << ($x_max - $y_max-1) in base 2**26
+        $temp_value = array_merge(self::array_repeat(0, $x_max - $y_max), $y_value);
+
+        while ($x->compare($temp) >= 0) {
+            // calculate the "common residue"
+            ++$quotient_value[$x_max - $y_max];
+            $x = $x->subtract($temp);
+            $x_max = count($x->value) - 1;
+        }
+
+        for ($i = $x_max; $i >= $y_max + 1; --$i) {
+            $x_value = &$x->value;
+            $x_window = [
+                isset($x_value[$i]) ? $x_value[$i] : 0,
+                isset($x_value[$i - 1]) ? $x_value[$i - 1] : 0,
+                isset($x_value[$i - 2]) ? $x_value[$i - 2] : 0
+            ];
+            $y_window = [
+                $y_value[$y_max],
+                ($y_max > 0) ? $y_value[$y_max - 1] : 0
+            ];
+
+            $q_index = $i - $y_max - 1;
+            if ($x_window[0] == $y_window[0]) {
+                $quotient_value[$q_index] = static::MAX_DIGIT;
+            } else {
+                $quotient_value[$q_index] = self::safe_divide(
+                    $x_window[0] * static::BASE_FULL + $x_window[1],
+                    $y_window[0]
+                );
+            }
+
+            $temp_value = [$y_window[1], $y_window[0]];
+
+            $lhs->value = [$quotient_value[$q_index]];
+            $lhs = $lhs->multiply($temp);
+
+            $rhs_value = [$x_window[2], $x_window[1], $x_window[0]];
+
+            while ($lhs->compare($rhs) > 0) {
+                --$quotient_value[$q_index];
+
+                $lhs->value = [$quotient_value[$q_index]];
+                $lhs = $lhs->multiply($temp);
+            }
+
+            $adjust = self::array_repeat(0, $q_index);
+            $temp_value = [$quotient_value[$q_index]];
+            $temp = $temp->multiply($y);
+            $temp_value = &$temp->value;
+            if (count($temp_value)) {
+                $temp_value = array_merge($adjust, $temp_value);
+            }
+
+            $x = $x->subtract($temp);
+
+            if ($x->compare(static::$zero[static::class]) < 0) {
+                $temp_value = array_merge($adjust, $y_value);
+                $x = $x->add($temp);
+
+                --$quotient_value[$q_index];
+            }
+
+            $x_max = count($x_value) - 1;
+        }
+
+        // unnormalize the remainder
+        $x->rshift($shift);
+
+        $quotient->is_negative = $x_sign != $y_sign;
+
+        // calculate the "common residue", if appropriate
+        if ($x_sign) {
+            $y->rshift($shift);
+            $x = $y->subtract($x);
+        }
+
+        return [$this->normalize($quotient), $this->normalize($x)];
+    }
+
+    /**
+     * Divides a BigInteger by a regular integer
+     *
+     * abc / x = a00 / x + b0 / x + c / x
+     *
+     * @param array $dividend
+     * @param int $divisor
+     * @return array
+     */
+    private static function divide_digit(array $dividend, $divisor)
+    {
+        $carry = 0;
+        $result = [];
+
+        for ($i = count($dividend) - 1; $i >= 0; --$i) {
+            $temp = static::BASE_FULL * $carry + $dividend[$i];
+            $result[$i] = self::safe_divide($temp, $divisor);
+            $carry = (int)($temp - $divisor * $result[$i]);
+        }
+
+        return [$result, $carry];
+    }
+
+    /**
+     * Single digit division
+     *
+     * Even if int64 is being used the division operator will return a float64 value
+     * if the dividend is not evenly divisible by the divisor. Since a float64 doesn't
+     * have the precision of int64 this is a problem so, when int64 is being used,
+     * we'll guarantee that the dividend is divisible by first subtracting the remainder.
+     *
+     * @param int $x
+     * @param int $y
+     * @return int
+     */
+    private static function safe_divide($x, $y)
+    {
+        if (static::BASE === 26) {
+            return (int)($x / $y);
+        }
+
+        // static::BASE === 31
+        /** @var int */
+        return ($x - ($x % $y)) / $y;
+    }
+
+    /**
+     * Convert an array / boolean to a PHP BigInteger object
+     *
+     * @param array $arr
+     * @return static
+     */
+    protected function convertToObj(array $arr)
+    {
+        $result = new static();
+        $result->value = $arr[self::VALUE];
+        $result->is_negative = $arr[self::SIGN];
+
+        return $this->normalize($result);
+    }
+
+    /**
+     * Normalize
+     *
+     * Removes leading zeros and truncates (if necessary) to maintain the appropriate precision
+     *
+     * @param PHP $result
+     * @return static
+     */
+    protected function normalize(PHP $result)
+    {
+        $result->precision = $this->precision;
+        $result->bitmask = $this->bitmask;
+
+        $value = &$result->value;
+
+        if (!count($value)) {
+            $result->is_negative = false;
+            return $result;
+        }
+
+        $value = static::trim($value);
+
+        if (!empty($result->bitmask->value)) {
+            $length = min(count($value), count($result->bitmask->value));
+            $value = array_slice($value, 0, $length);
+
+            for ($i = 0; $i < $length; ++$i) {
+                $value[$i] = $value[$i] & $result->bitmask->value[$i];
+            }
+
+            $value = static::trim($value);
+        }
+
+        return $result;
+    }
+
+    /**
+     * Compares two numbers.
+     *
+     * @param array $x_value
+     * @param bool $x_negative
+     * @param array $y_value
+     * @param bool $y_negative
+     * @return int
+     * @see static::compare()
+     */
+    protected static function compareHelper(array $x_value, $x_negative, array $y_value, $y_negative)
+    {
+        if ($x_negative != $y_negative) {
+            return (!$x_negative && $y_negative) ? 1 : -1;
+        }
+
+        $result = $x_negative ? -1 : 1;
+
+        if (count($x_value) != count($y_value)) {
+            return (count($x_value) > count($y_value)) ? $result : -$result;
+        }
+        $size = max(count($x_value), count($y_value));
+
+        $x_value = array_pad($x_value, $size, 0);
+        $y_value = array_pad($y_value, $size, 0);
+
+        for ($i = count($x_value) - 1; $i >= 0; --$i) {
+            if ($x_value[$i] != $y_value[$i]) {
+                return ($x_value[$i] > $y_value[$i]) ? $result : -$result;
+            }
+        }
+
+        return 0;
+    }
+
+    /**
+     * Absolute value.
+     *
+     * @return PHP
+     */
+    public function abs()
+    {
+        $temp = new static();
+        $temp->value = $this->value;
+
+        return $temp;
+    }
+
+    /**
+     * Trim
+     *
+     * Removes leading zeros
+     *
+     * @param list<static> $value
+     * @return list<static>
+     */
+    protected static function trim(array $value)
+    {
+        for ($i = count($value) - 1; $i >= 0; --$i) {
+            if ($value[$i]) {
+                break;
+            }
+            unset($value[$i]);
+        }
+
+        return $value;
+    }
+
+    /**
+     * Logical Right Shift
+     *
+     * Shifts BigInteger's by $shift bits, effectively dividing by 2**$shift.
+     *
+     * @param int $shift
+     * @return PHP
+     */
+    public function bitwise_rightShift($shift)
+    {
+        $temp = new static();
+
+        // could just replace lshift with this, but then all lshift() calls would need to be rewritten
+        // and I don't want to do that...
+        $temp->value = $this->value;
+        $temp->rshift($shift);
+
+        return $this->normalize($temp);
+    }
+
+    /**
+     * Logical Left Shift
+     *
+     * Shifts BigInteger's by $shift bits, effectively multiplying by 2**$shift.
+     *
+     * @param int $shift
+     * @return PHP
+     */
+    public function bitwise_leftShift($shift)
+    {
+        $temp = new static();
+        // could just replace _rshift with this, but then all _lshift() calls would need to be rewritten
+        // and I don't want to do that...
+        $temp->value = $this->value;
+        $temp->lshift($shift);
+
+        return $this->normalize($temp);
+    }
+
+    /**
+     * Converts 32-bit integers to bytes.
+     *
+     * @param int $x
+     * @return string
+     */
+    private static function int2bytes($x)
+    {
+        return ltrim(pack('N', $x), chr(0));
+    }
+
+    /**
+     * Array Repeat
+     *
+     * @param int $input
+     * @param int $multiplier
+     * @return array
+     */
+    protected static function array_repeat($input, $multiplier)
+    {
+        return $multiplier ? array_fill(0, $multiplier, $input) : [];
+    }
+
+    /**
+     * Logical Left Shift
+     *
+     * Shifts BigInteger's by $shift bits.
+     *
+     * @param int $shift
+     */
+    protected function lshift($shift)
+    {
+        if ($shift == 0) {
+            return;
+        }
+
+        $num_digits = (int)($shift / static::BASE);
+        $shift %= static::BASE;
+        $shift = 1 << $shift;
+
+        $carry = 0;
+
+        for ($i = 0; $i < count($this->value); ++$i) {
+            $temp = $this->value[$i] * $shift + $carry;
+            $carry = static::BASE === 26 ? intval($temp / 0x4000000) : ($temp >> 31);
+            $this->value[$i] = (int)($temp - $carry * static::BASE_FULL);
+        }
+
+        if ($carry) {
+            $this->value[count($this->value)] = $carry;
+        }
+
+        while ($num_digits--) {
+            array_unshift($this->value, 0);
+        }
+    }
+
+    /**
+     * Logical Right Shift
+     *
+     * Shifts BigInteger's by $shift bits.
+     *
+     * @param int $shift
+     */
+    protected function rshift($shift)
+    {
+        if ($shift == 0) {
+            return;
+        }
+
+        $num_digits = (int)($shift / static::BASE);
+        $shift %= static::BASE;
+        $carry_shift = static::BASE - $shift;
+        $carry_mask = (1 << $shift) - 1;
+
+        if ($num_digits) {
+            $this->value = array_slice($this->value, $num_digits);
+        }
+
+        $carry = 0;
+
+        for ($i = count($this->value) - 1; $i >= 0; --$i) {
+            $temp = $this->value[$i] >> $shift | $carry;
+            $carry = ($this->value[$i] & $carry_mask) << $carry_shift;
+            $this->value[$i] = $temp;
+        }
+
+        $this->value = static::trim($this->value);
+    }
+
+    /**
+     * Performs modular exponentiation.
+     *
+     * @param PHP $e
+     * @param PHP $n
+     * @return PHP
+     */
+    protected function powModInner(PHP $e, PHP $n)
+    {
+        try {
+            $class = static::$modexpEngine[static::class];
+            return $class::powModHelper($this, $e, $n, static::class);
+        } catch (\Exception $err) {
+            return PHP\DefaultEngine::powModHelper($this, $e, $n, static::class);
+        }
+    }
+
+    /**
+     * Performs squaring
+     *
+     * @param list<static> $x
+     * @return list<static>
+     */
+    protected static function square(array $x)
+    {
+        return count($x) < 2 * self::KARATSUBA_CUTOFF ?
+            self::trim(self::baseSquare($x)) :
+            self::trim(self::karatsubaSquare($x));
+    }
+
+    /**
+     * Performs traditional squaring on two BigIntegers
+     *
+     * Squaring can be done faster than multiplying a number by itself can be.  See
+     * {@link http://www.cacr.math.uwaterloo.ca/hac/about/chap14.pdf#page=7 HAC 14.2.4} /
+     * {@link http://math.libtomcrypt.com/files/tommath.pdf#page=141 MPM 5.3} for more information.
+     *
+     * @param array $value
+     * @return array
+     */
+    protected static function baseSquare(array $value)
+    {
+        if (empty($value)) {
+            return [];
+        }
+        $square_value = self::array_repeat(0, 2 * count($value));
+
+        for ($i = 0, $max_index = count($value) - 1; $i <= $max_index; ++$i) {
+            $i2 = $i << 1;
+
+            $temp = $square_value[$i2] + $value[$i] * $value[$i];
+            $carry = static::BASE === 26 ? intval($temp / 0x4000000) : ($temp >> 31);
+            $square_value[$i2] = (int)($temp - static::BASE_FULL * $carry);
+
+            // note how we start from $i+1 instead of 0 as we do in multiplication.
+            for ($j = $i + 1, $k = $i2 + 1; $j <= $max_index; ++$j, ++$k) {
+                $temp = $square_value[$k] + 2 * $value[$j] * $value[$i] + $carry;
+                $carry = static::BASE === 26 ? intval($temp / 0x4000000) : ($temp >> 31);
+                $square_value[$k] = (int)($temp - static::BASE_FULL * $carry);
+            }
+
+            // the following line can yield values larger 2**15.  at this point, PHP should switch
+            // over to floats.
+            $square_value[$i + $max_index + 1] = $carry;
+        }
+
+        return $square_value;
+    }
+
+    /**
+     * Performs Karatsuba "squaring" on two BigIntegers
+     *
+     * See {@link http://en.wikipedia.org/wiki/Karatsuba_algorithm Karatsuba algorithm} and
+     * {@link http://math.libtomcrypt.com/files/tommath.pdf#page=151 MPM 5.3.4}.
+     *
+     * @param array $value
+     * @return array
+     */
+    protected static function karatsubaSquare(array $value)
+    {
+        $m = count($value) >> 1;
+
+        if ($m < self::KARATSUBA_CUTOFF) {
+            return self::baseSquare($value);
+        }
+
+        $x1 = array_slice($value, $m);
+        $x0 = array_slice($value, 0, $m);
+
+        $z2 = self::karatsubaSquare($x1);
+        $z0 = self::karatsubaSquare($x0);
+
+        $z1 = self::addHelper($x1, false, $x0, false);
+        $z1 = self::karatsubaSquare($z1[self::VALUE]);
+        $temp = self::addHelper($z2, false, $z0, false);
+        $z1 = self::subtractHelper($z1, false, $temp[self::VALUE], false);
+
+        $z2 = array_merge(array_fill(0, 2 * $m, 0), $z2);
+        $z1[self::VALUE] = array_merge(array_fill(0, $m, 0), $z1[self::VALUE]);
+
+        $xx = self::addHelper($z2, false, $z1[self::VALUE], $z1[self::SIGN]);
+        $xx = self::addHelper($xx[self::VALUE], $xx[self::SIGN], $z0, false);
+
+        return $xx[self::VALUE];
+    }
+
+    /**
+     * Make the current number odd
+     *
+     * If the current number is odd it'll be unchanged.  If it's even, one will be added to it.
+     *
+     * @see self::randomPrime()
+     */
+    protected function make_odd()
+    {
+        $this->value[0] |= 1;
+    }
+
+    /**
+     * Test the number against small primes.
+     *
+     * @see self::isPrime()
+     */
+    protected function testSmallPrimes()
+    {
+        if ($this->value == [1]) {
+            return false;
+        }
+        if ($this->value == [2]) {
+            return true;
+        }
+        if (~$this->value[0] & 1) {
+            return false;
+        }
+
+        $value = $this->value;
+        foreach (static::PRIMES as $prime) {
+            list(, $r) = self::divide_digit($value, $prime);
+            if (!$r) {
+                return count($value) == 1 && $value[0] == $prime;
+            }
+        }
+
+        return true;
+    }
+
+    /**
+     * Scan for 1 and right shift by that amount
+     *
+     * ie. $s = gmp_scan1($n, 0) and $r = gmp_div_q($n, gmp_pow(gmp_init('2'), $s));
+     *
+     * @param PHP $r
+     * @return int
+     * @see self::isPrime()
+     */
+    public static function scan1divide(PHP $r)
+    {
+        $r_value = &$r->value;
+        for ($i = 0, $r_length = count($r_value); $i < $r_length; ++$i) {
+            $temp = ~$r_value[$i] & static::MAX_DIGIT;
+            for ($j = 1; ($temp >> $j) & 1; ++$j) {
+            }
+            if ($j <= static::BASE) {
+                break;
+            }
+        }
+        $s = static::BASE * $i + $j;
+        $r->rshift($s);
+        return $s;
+    }
+
+    /**
+     * Performs exponentiation.
+     *
+     * @param PHP $n
+     * @return PHP
+     */
+    protected function powHelper(PHP $n)
+    {
+        if ($n->compare(static::$zero[static::class]) == 0) {
+            return new static(1);
+        } // n^0 = 1
+
+        $temp = clone $this;
+        while (!$n->equals(static::$one[static::class])) {
+            $temp = $temp->multiply($this);
+            $n = $n->subtract(static::$one[static::class]);
+        }
+
+        return $temp;
+    }
+
+    /**
+     * Is Odd?
+     *
+     * @return bool
+     */
+    public function isOdd()
+    {
+        return (bool)($this->value[0] & 1);
+    }
+
+    /**
+     * Tests if a bit is set
+     *
+     * @return bool
+     */
+    public function testBit($x)
+    {
+        $digit = (int) floor($x / static::BASE);
+        $bit = $x % static::BASE;
+
+        if (!isset($this->value[$digit])) {
+            return false;
+        }
+
+        return (bool)($this->value[$digit] & (1 << $bit));
+    }
+
+    /**
+     * Is Negative?
+     *
+     * @return bool
+     */
+    public function isNegative()
+    {
+        return $this->is_negative;
+    }
+
+    /**
+     * Negate
+     *
+     * Given $k, returns -$k
+     *
+     * @return static
+     */
+    public function negate()
+    {
+        $temp = clone $this;
+        $temp->is_negative = !$temp->is_negative;
+
+        return $temp;
+    }
+
+    /**
+     * Bitwise Split
+     *
+     * Splits BigInteger's into chunks of $split bits
+     *
+     * @param int $split
+     * @return list<static>
+     */
+    public function bitwise_split($split)
+    {
+        if ($split < 1) {
+            throw new \RuntimeException('Offset must be greater than 1');
+        }
+
+        $width = (int)($split / static::BASE);
+        if (!$width) {
+            $arr = $this->bitwise_small_split($split);
+            return array_map(function ($digit) {
+                $temp = new static();
+                $temp->value = $digit != 0 ? [$digit] : [];
+                return $temp;
+            }, $arr);
+        }
+
+        $vals = [];
+        $val = $this->value;
+
+        $i = $overflow = 0;
+        $len = count($val);
+        while ($i < $len) {
+            $digit = [];
+            if (!$overflow) {
+                $digit = array_slice($val, $i, $width);
+                $i += $width;
+                $overflow = $split % static::BASE;
+                if ($overflow) {
+                    $mask = (1 << $overflow) - 1;
+                    $temp = isset($val[$i]) ? $val[$i] : 0;
+                    $digit[] = $temp & $mask;
+                }
+            } else {
+                $remaining = static::BASE - $overflow;
+                $tempsplit = $split - $remaining;
+                $tempwidth = (int)($tempsplit / static::BASE + 1);
+                $digit = array_slice($val, $i, $tempwidth);
+                $i += $tempwidth;
+                $tempoverflow = $tempsplit % static::BASE;
+                if ($tempoverflow) {
+                    $tempmask = (1 << $tempoverflow) - 1;
+                    $temp = isset($val[$i]) ? $val[$i] : 0;
+                    $digit[] = $temp & $tempmask;
+                }
+                $newbits = 0;
+                for ($j = count($digit) - 1; $j >= 0; $j--) {
+                    $temp = $digit[$j] & $mask;
+                    $digit[$j] = ($digit[$j] >> $overflow) | ($newbits << $remaining);
+                    $newbits = $temp;
+                }
+                $overflow = $tempoverflow;
+                $mask = $tempmask;
+            }
+            $temp = new static();
+            $temp->value = static::trim($digit);
+            $vals[] = $temp;
+        }
+
+        return array_reverse($vals);
+    }
+
+    /**
+     * Bitwise Split where $split < static::BASE
+     *
+     * @param int $split
+     * @return list<int>
+     */
+    private function bitwise_small_split($split)
+    {
+        $vals = [];
+        $val = $this->value;
+
+        $mask = (1 << $split) - 1;
+
+        $i = $overflow = 0;
+        $len = count($val);
+        $val[] = 0;
+        $remaining = static::BASE;
+        while ($i != $len) {
+            $digit = $val[$i] & $mask;
+            $val[$i] >>= $split;
+            if (!$overflow) {
+                $remaining -= $split;
+                $overflow = $split <= $remaining ? 0 : $split - $remaining;
+
+                if (!$remaining) {
+                    $i++;
+                    $remaining = static::BASE;
+                    $overflow = 0;
+                }
+            } elseif (++$i != $len) {
+                $tempmask = (1 << $overflow) - 1;
+                $digit |= ($val[$i] & $tempmask) << $remaining;
+                $val[$i] >>= $overflow;
+                $remaining = static::BASE - $overflow;
+                $overflow = $split <= $remaining ? 0 : $split - $remaining;
+            }
+
+            $vals[] = $digit;
+        }
+
+        while ($vals[count($vals) - 1] == 0) {
+            unset($vals[count($vals) - 1]);
+        }
+
+        return array_reverse($vals);
+    }
+
+    /**
+     * @return bool
+     */
+    protected static function testJITOnWindows()
+    {
+        // see https://github.com/php/php-src/issues/11917
+        if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN' && function_exists('opcache_get_status') && PHP_VERSION_ID < 80213 && !defined('PHPSECLIB_ALLOW_JIT')) {
+            $status = opcache_get_status();
+            if ($status && isset($status['jit']) && $status['jit']['enabled'] && $status['jit']['on']) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    /**
+     * Return the size of a BigInteger in bits
+     *
+     * @return int
+     */
+    public function getLength()
+    {
+        $max = count($this->value) - 1;
+        return $max != -1 ?
+            $max * static::BASE + intval(ceil(log($this->value[$max] + 1, 2))) :
+            0;
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/PHP/Base.php b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/PHP/Base.php
new file mode 100644
index 0000000..40f64bd
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/PHP/Base.php
@@ -0,0 +1,143 @@
+<?php
+
+/**
+ * PHP Modular Exponentiation Engine
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Math\BigInteger\Engines\PHP;
+
+use phpseclib3\Math\BigInteger\Engines\PHP;
+
+/**
+ * PHP Modular Exponentiation Engine
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class Base extends PHP
+{
+    /**
+     * Cache constants
+     *
+     * $cache[self::VARIABLE] tells us whether or not the cached data is still valid.
+     *
+     */
+    const VARIABLE = 0;
+    /**
+     * $cache[self::DATA] contains the cached data.
+     *
+     */
+    const DATA = 1;
+
+    /**
+     * Test for engine validity
+     *
+     * @return bool
+     */
+    public static function isValidEngine()
+    {
+        return static::class != __CLASS__;
+    }
+
+    /**
+     * Performs modular exponentiation.
+     *
+     * The most naive approach to modular exponentiation has very unreasonable requirements, and
+     * and although the approach involving repeated squaring does vastly better, it, too, is impractical
+     * for our purposes.  The reason being that division - by far the most complicated and time-consuming
+     * of the basic operations (eg. +,-,*,/) - occurs multiple times within it.
+     *
+     * Modular reductions resolve this issue.  Although an individual modular reduction takes more time
+     * then an individual division, when performed in succession (with the same modulo), they're a lot faster.
+     *
+     * The two most commonly used modular reductions are Barrett and Montgomery reduction.  Montgomery reduction,
+     * although faster, only works when the gcd of the modulo and of the base being used is 1.  In RSA, when the
+     * base is a power of two, the modulo - a product of two primes - is always going to have a gcd of 1 (because
+     * the product of two odd numbers is odd), but what about when RSA isn't used?
+     *
+     * In contrast, Barrett reduction has no such constraint.  As such, some bigint implementations perform a
+     * Barrett reduction after every operation in the modpow function.  Others perform Barrett reductions when the
+     * modulo is even and Montgomery reductions when the modulo is odd.  BigInteger.java's modPow method, however,
+     * uses a trick involving the Chinese Remainder Theorem to factor the even modulo into two numbers - one odd and
+     * the other, a power of two - and recombine them, later.  This is the method that this modPow function uses.
+     * {@link http://islab.oregonstate.edu/papers/j34monex.pdf Montgomery Reduction with Even Modulus} elaborates.
+     *
+     * @param PHP $x
+     * @param PHP $e
+     * @param PHP $n
+     * @param string $class
+     * @return PHP
+     */
+    protected static function powModHelper(PHP $x, PHP $e, PHP $n, $class)
+    {
+        if (empty($e->value)) {
+            $temp = new $class();
+            $temp->value = [1];
+            return $x->normalize($temp);
+        }
+
+        if ($e->value == [1]) {
+            list(, $temp) = $x->divide($n);
+            return $x->normalize($temp);
+        }
+
+        if ($e->value == [2]) {
+            $temp = new $class();
+            $temp->value = $class::square($x->value);
+            list(, $temp) = $temp->divide($n);
+            return $x->normalize($temp);
+        }
+
+        return $x->normalize(static::slidingWindow($x, $e, $n, $class));
+    }
+
+    /**
+     * Modular reduction preparation
+     *
+     * @param array $x
+     * @param array $n
+     * @param string $class
+     * @see self::slidingWindow()
+     * @return array
+     */
+    protected static function prepareReduce(array $x, array $n, $class)
+    {
+        return static::reduce($x, $n, $class);
+    }
+
+    /**
+     * Modular multiply
+     *
+     * @param array $x
+     * @param array $y
+     * @param array $n
+     * @param string $class
+     * @see self::slidingWindow()
+     * @return array
+     */
+    protected static function multiplyReduce(array $x, array $y, array $n, $class)
+    {
+        $temp = $class::multiplyHelper($x, false, $y, false);
+        return static::reduce($temp[self::VALUE], $n, $class);
+    }
+
+    /**
+     * Modular square
+     *
+     * @param array $x
+     * @param array $n
+     * @param string $class
+     * @see self::slidingWindow()
+     * @return array
+     */
+    protected static function squareReduce(array $x, array $n, $class)
+    {
+        return static::reduce($class::square($x), $n, $class);
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/PHP/DefaultEngine.php b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/PHP/DefaultEngine.php
new file mode 100644
index 0000000..6d33532
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/PHP/DefaultEngine.php
@@ -0,0 +1,25 @@
+<?php
+
+/**
+ * PHP Default Modular Exponentiation Engine
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Math\BigInteger\Engines\PHP;
+
+use phpseclib3\Math\BigInteger\Engines\PHP\Reductions\EvalBarrett;
+
+/**
+ * PHP Default Modular Exponentiation Engine
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class DefaultEngine extends EvalBarrett
+{
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/PHP/Montgomery.php b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/PHP/Montgomery.php
new file mode 100644
index 0000000..09f825f
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/PHP/Montgomery.php
@@ -0,0 +1,89 @@
+<?php
+
+/**
+ * PHP Montgomery Modular Exponentiation Engine
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Math\BigInteger\Engines\PHP;
+
+use phpseclib3\Math\BigInteger\Engines\Engine;
+use phpseclib3\Math\BigInteger\Engines\PHP;
+use phpseclib3\Math\BigInteger\Engines\PHP\Reductions\PowerOfTwo;
+
+/**
+ * PHP Montgomery Modular Exponentiation Engine
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class Montgomery extends Base
+{
+    /**
+     * Test for engine validity
+     *
+     * @return bool
+     */
+    public static function isValidEngine()
+    {
+        return static::class != __CLASS__;
+    }
+
+    /**
+     * Performs modular exponentiation.
+     *
+     * @template T of Engine
+     * @param Engine $x
+     * @param Engine $e
+     * @param Engine $n
+     * @param class-string<T> $class
+     * @return T
+     */
+    protected static function slidingWindow(Engine $x, Engine $e, Engine $n, $class)
+    {
+        // is the modulo odd?
+        if ($n->value[0] & 1) {
+            return parent::slidingWindow($x, $e, $n, $class);
+        }
+        // if it's not, it's even
+
+        // find the lowest set bit (eg. the max pow of 2 that divides $n)
+        for ($i = 0; $i < count($n->value); ++$i) {
+            if ($n->value[$i]) {
+                $temp = decbin($n->value[$i]);
+                $j = strlen($temp) - strrpos($temp, '1') - 1;
+                $j += $class::BASE * $i;
+                break;
+            }
+        }
+        // at this point, 2^$j * $n/(2^$j) == $n
+
+        $mod1 = clone $n;
+        $mod1->rshift($j);
+        $mod2 = new $class();
+        $mod2->value = [1];
+        $mod2->lshift($j);
+
+        $part1 = $mod1->value != [1] ? parent::slidingWindow($x, $e, $mod1, $class) : new $class();
+        $part2 = PowerOfTwo::slidingWindow($x, $e, $mod2, $class);
+
+        $y1 = $mod2->modInverse($mod1);
+        $y2 = $mod1->modInverse($mod2);
+
+        $result = $part1->multiply($mod2);
+        $result = $result->multiply($y1);
+
+        $temp = $part2->multiply($mod1);
+        $temp = $temp->multiply($y2);
+
+        $result = $result->add($temp);
+        list(, $result) = $result->divide($n);
+
+        return $result;
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/PHP/OpenSSL.php b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/PHP/OpenSSL.php
new file mode 100644
index 0000000..eddd25e
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/PHP/OpenSSL.php
@@ -0,0 +1,25 @@
+<?php
+
+/**
+ * OpenSSL Modular Exponentiation Engine
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Math\BigInteger\Engines\PHP;
+
+use phpseclib3\Math\BigInteger\Engines\OpenSSL as Progenitor;
+
+/**
+ * OpenSSL Modular Exponentiation Engine
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class OpenSSL extends Progenitor
+{
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/PHP/Reductions/Barrett.php b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/PHP/Reductions/Barrett.php
new file mode 100644
index 0000000..3518d76
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/PHP/Reductions/Barrett.php
@@ -0,0 +1,281 @@
+<?php
+
+/**
+ * PHP Barrett Modular Exponentiation Engine
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Math\BigInteger\Engines\PHP\Reductions;
+
+use phpseclib3\Math\BigInteger\Engines\PHP;
+use phpseclib3\Math\BigInteger\Engines\PHP\Base;
+
+/**
+ * PHP Barrett Modular Exponentiation Engine
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class Barrett extends Base
+{
+    /**
+     * Barrett Modular Reduction
+     *
+     * See {@link http://www.cacr.math.uwaterloo.ca/hac/about/chap14.pdf#page=14 HAC 14.3.3} /
+     * {@link http://math.libtomcrypt.com/files/tommath.pdf#page=165 MPM 6.2.5} for more information.  Modified slightly,
+     * so as not to require negative numbers (initially, this script didn't support negative numbers).
+     *
+     * Employs "folding", as described at
+     * {@link http://www.cosic.esat.kuleuven.be/publications/thesis-149.pdf#page=66 thesis-149.pdf#page=66}.  To quote from
+     * it, "the idea [behind folding] is to find a value x' such that x (mod m) = x' (mod m), with x' being smaller than x."
+     *
+     * Unfortunately, the "Barrett Reduction with Folding" algorithm described in thesis-149.pdf is not, as written, all that
+     * usable on account of (1) its not using reasonable radix points as discussed in
+     * {@link http://math.libtomcrypt.com/files/tommath.pdf#page=162 MPM 6.2.2} and (2) the fact that, even with reasonable
+     * radix points, it only works when there are an even number of digits in the denominator.  The reason for (2) is that
+     * (x >> 1) + (x >> 1) != x / 2 + x / 2.  If x is even, they're the same, but if x is odd, they're not.  See the in-line
+     * comments for details.
+     *
+     * @param array $n
+     * @param array $m
+     * @param class-string<PHP> $class
+     * @return array
+     */
+    protected static function reduce(array $n, array $m, $class)
+    {
+        static $cache = [
+            self::VARIABLE => [],
+            self::DATA => []
+        ];
+
+        $m_length = count($m);
+
+        // if (self::compareHelper($n, $static::square($m)) >= 0) {
+        if (count($n) > 2 * $m_length) {
+            $lhs = new $class();
+            $rhs = new $class();
+            $lhs->value = $n;
+            $rhs->value = $m;
+            list(, $temp) = $lhs->divide($rhs);
+            return $temp->value;
+        }
+
+        // if (m.length >> 1) + 2 <= m.length then m is too small and n can't be reduced
+        if ($m_length < 5) {
+            return self::regularBarrett($n, $m, $class);
+        }
+        // n = 2 * m.length
+
+        if (($key = array_search($m, $cache[self::VARIABLE])) === false) {
+            $key = count($cache[self::VARIABLE]);
+            $cache[self::VARIABLE][] = $m;
+
+            $lhs = new $class();
+            $lhs_value = &$lhs->value;
+            $lhs_value = self::array_repeat(0, $m_length + ($m_length >> 1));
+            $lhs_value[] = 1;
+            $rhs = new $class();
+            $rhs->value = $m;
+
+            list($u, $m1) = $lhs->divide($rhs);
+            $u = $u->value;
+            $m1 = $m1->value;
+
+            $cache[self::DATA][] = [
+                'u' => $u, // m.length >> 1 (technically (m.length >> 1) + 1)
+                'm1' => $m1 // m.length
+            ];
+        } else {
+            extract($cache[self::DATA][$key]);
+        }
+
+        $cutoff = $m_length + ($m_length >> 1);
+        $lsd = array_slice($n, 0, $cutoff); // m.length + (m.length >> 1)
+        $msd = array_slice($n, $cutoff);    // m.length >> 1
+
+        $lsd = self::trim($lsd);
+        $temp = $class::multiplyHelper($msd, false, $m1, false); // m.length + (m.length >> 1)
+        $n = $class::addHelper($lsd, false, $temp[self::VALUE], false); // m.length + (m.length >> 1) + 1 (so basically we're adding two same length numbers)
+        //if ($m_length & 1) {
+        //    return self::regularBarrett($n[self::VALUE], $m, $class);
+        //}
+
+        // (m.length + (m.length >> 1) + 1) - (m.length - 1) == (m.length >> 1) + 2
+        $temp = array_slice($n[self::VALUE], $m_length - 1);
+        // if even: ((m.length >> 1) + 2) + (m.length >> 1) == m.length + 2
+        // if odd:  ((m.length >> 1) + 2) + (m.length >> 1) == (m.length - 1) + 2 == m.length + 1
+        $temp = $class::multiplyHelper($temp, false, $u, false);
+        // if even: (m.length + 2) - ((m.length >> 1) + 1) = m.length - (m.length >> 1) + 1
+        // if odd:  (m.length + 1) - ((m.length >> 1) + 1) = m.length - (m.length >> 1)
+        $temp = array_slice($temp[self::VALUE], ($m_length >> 1) + 1);
+        // if even: (m.length - (m.length >> 1) + 1) + m.length = 2 * m.length - (m.length >> 1) + 1
+        // if odd:  (m.length - (m.length >> 1)) + m.length     = 2 * m.length - (m.length >> 1)
+        $temp = $class::multiplyHelper($temp, false, $m, false);
+
+        // at this point, if m had an odd number of digits, we'd be subtracting a 2 * m.length - (m.length >> 1) digit
+        // number from a m.length + (m.length >> 1) + 1 digit number.  ie. there'd be an extra digit and the while loop
+        // following this comment would loop a lot (hence our calling _regularBarrett() in that situation).
+
+        $result = $class::subtractHelper($n[self::VALUE], false, $temp[self::VALUE], false);
+
+        while (self::compareHelper($result[self::VALUE], $result[self::SIGN], $m, false) >= 0) {
+            $result = $class::subtractHelper($result[self::VALUE], $result[self::SIGN], $m, false);
+        }
+
+        return $result[self::VALUE];
+    }
+
+    /**
+     * (Regular) Barrett Modular Reduction
+     *
+     * For numbers with more than four digits BigInteger::_barrett() is faster.  The difference between that and this
+     * is that this function does not fold the denominator into a smaller form.
+     *
+     * @param array $x
+     * @param array $n
+     * @param string $class
+     * @return array
+     */
+    private static function regularBarrett(array $x, array $n, $class)
+    {
+        static $cache = [
+            self::VARIABLE => [],
+            self::DATA => []
+        ];
+
+        $n_length = count($n);
+
+        if (count($x) > 2 * $n_length) {
+            $lhs = new $class();
+            $rhs = new $class();
+            $lhs->value = $x;
+            $rhs->value = $n;
+            list(, $temp) = $lhs->divide($rhs);
+            return $temp->value;
+        }
+
+        if (($key = array_search($n, $cache[self::VARIABLE])) === false) {
+            $key = count($cache[self::VARIABLE]);
+            $cache[self::VARIABLE][] = $n;
+            $lhs = new $class();
+            $lhs_value = &$lhs->value;
+            $lhs_value = self::array_repeat(0, 2 * $n_length);
+            $lhs_value[] = 1;
+            $rhs = new $class();
+            $rhs->value = $n;
+            list($temp, ) = $lhs->divide($rhs); // m.length
+            $cache[self::DATA][] = $temp->value;
+        }
+
+        // 2 * m.length - (m.length - 1) = m.length + 1
+        $temp = array_slice($x, $n_length - 1);
+        // (m.length + 1) + m.length = 2 * m.length + 1
+        $temp = $class::multiplyHelper($temp, false, $cache[self::DATA][$key], false);
+        // (2 * m.length + 1) - (m.length - 1) = m.length + 2
+        $temp = array_slice($temp[self::VALUE], $n_length + 1);
+
+        // m.length + 1
+        $result = array_slice($x, 0, $n_length + 1);
+        // m.length + 1
+        $temp = self::multiplyLower($temp, false, $n, false, $n_length + 1, $class);
+        // $temp == array_slice($class::regularMultiply($temp, false, $n, false)->value, 0, $n_length + 1)
+
+        if (self::compareHelper($result, false, $temp[self::VALUE], $temp[self::SIGN]) < 0) {
+            $corrector_value = self::array_repeat(0, $n_length + 1);
+            $corrector_value[count($corrector_value)] = 1;
+            $result = $class::addHelper($result, false, $corrector_value, false);
+            $result = $result[self::VALUE];
+        }
+
+        // at this point, we're subtracting a number with m.length + 1 digits from another number with m.length + 1 digits
+        $result = $class::subtractHelper($result, false, $temp[self::VALUE], $temp[self::SIGN]);
+        while (self::compareHelper($result[self::VALUE], $result[self::SIGN], $n, false) > 0) {
+            $result = $class::subtractHelper($result[self::VALUE], $result[self::SIGN], $n, false);
+        }
+
+        return $result[self::VALUE];
+    }
+
+    /**
+     * Performs long multiplication up to $stop digits
+     *
+     * If you're going to be doing array_slice($product->value, 0, $stop), some cycles can be saved.
+     *
+     * @see self::regularBarrett()
+     * @param array $x_value
+     * @param bool $x_negative
+     * @param array $y_value
+     * @param bool $y_negative
+     * @param int $stop
+     * @param string $class
+     * @return array
+     */
+    private static function multiplyLower(array $x_value, $x_negative, array $y_value, $y_negative, $stop, $class)
+    {
+        $x_length = count($x_value);
+        $y_length = count($y_value);
+
+        if (!$x_length || !$y_length) { // a 0 is being multiplied
+            return [
+                self::VALUE => [],
+                self::SIGN => false
+            ];
+        }
+
+        if ($x_length < $y_length) {
+            $temp = $x_value;
+            $x_value = $y_value;
+            $y_value = $temp;
+
+            $x_length = count($x_value);
+            $y_length = count($y_value);
+        }
+
+        $product_value = self::array_repeat(0, $x_length + $y_length);
+
+        // the following for loop could be removed if the for loop following it
+        // (the one with nested for loops) initially set $i to 0, but
+        // doing so would also make the result in one set of unnecessary adds,
+        // since on the outermost loops first pass, $product->value[$k] is going
+        // to always be 0
+
+        $carry = 0;
+
+        for ($j = 0; $j < $x_length; ++$j) { // ie. $i = 0, $k = $i
+            $temp = $x_value[$j] * $y_value[0] + $carry; // $product_value[$k] == 0
+            $carry = $class::BASE === 26 ? intval($temp / 0x4000000) : ($temp >> 31);
+            $product_value[$j] = (int) ($temp - $class::BASE_FULL * $carry);
+        }
+
+        if ($j < $stop) {
+            $product_value[$j] = $carry;
+        }
+
+        // the above for loop is what the previous comment was talking about.  the
+        // following for loop is the "one with nested for loops"
+
+        for ($i = 1; $i < $y_length; ++$i) {
+            $carry = 0;
+
+            for ($j = 0, $k = $i; $j < $x_length && $k < $stop; ++$j, ++$k) {
+                $temp = $product_value[$k] + $x_value[$j] * $y_value[$i] + $carry;
+                $carry = $class::BASE === 26 ? intval($temp / 0x4000000) : ($temp >> 31);
+                $product_value[$k] = (int) ($temp - $class::BASE_FULL * $carry);
+            }
+
+            if ($k < $stop) {
+                $product_value[$k] = $carry;
+            }
+        }
+
+        return [
+            self::VALUE => self::trim($product_value),
+            self::SIGN => $x_negative != $y_negative
+        ];
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/PHP/Reductions/Classic.php b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/PHP/Reductions/Classic.php
new file mode 100644
index 0000000..54f3b86
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/PHP/Reductions/Classic.php
@@ -0,0 +1,42 @@
+<?php
+
+/**
+ * PHP Classic Modular Exponentiation Engine
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Math\BigInteger\Engines\PHP\Reductions;
+
+use phpseclib3\Math\BigInteger\Engines\PHP\Base;
+
+/**
+ * PHP Classic Modular Exponentiation Engine
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class Classic extends Base
+{
+    /**
+     * Regular Division
+     *
+     * @param array $x
+     * @param array $n
+     * @param string $class
+     * @return array
+     */
+    protected static function reduce(array $x, array $n, $class)
+    {
+        $lhs = new $class();
+        $lhs->value = $x;
+        $rhs = new $class();
+        $rhs->value = $n;
+        list(, $temp) = $lhs->divide($rhs);
+        return $temp->value;
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/PHP/Reductions/EvalBarrett.php b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/PHP/Reductions/EvalBarrett.php
new file mode 100644
index 0000000..2f94331
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/PHP/Reductions/EvalBarrett.php
@@ -0,0 +1,484 @@
+<?php
+
+/**
+ * PHP Dynamic Barrett Modular Exponentiation Engine
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Math\BigInteger\Engines\PHP\Reductions;
+
+use phpseclib3\Math\BigInteger\Engines\PHP;
+use phpseclib3\Math\BigInteger\Engines\PHP\Base;
+
+/**
+ * PHP Dynamic Barrett Modular Exponentiation Engine
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class EvalBarrett extends Base
+{
+    /**
+     * Custom Reduction Function
+     *
+     * @see self::generateCustomReduction
+     */
+    private static $custom_reduction;
+
+    /**
+     * Barrett Modular Reduction
+     *
+     * This calls a dynamically generated loop unrolled function that's specific to a given modulo.
+     * Array lookups are avoided as are if statements testing for how many bits the host OS supports, etc.
+     *
+     * @param array $n
+     * @param array $m
+     * @param string $class
+     * @return array
+     */
+    protected static function reduce(array $n, array $m, $class)
+    {
+        $inline = self::$custom_reduction;
+        return $inline($n);
+    }
+
+    /**
+     * Generate Custom Reduction
+     *
+     * @param PHP $m
+     * @param string $class
+     * @return callable
+     */
+    protected static function generateCustomReduction(PHP $m, $class)
+    {
+        $m_length = count($m->value);
+
+        if ($m_length < 5) {
+            $code = '
+                $lhs = new ' . $class . '();
+                $lhs->value = $x;
+                $rhs = new ' . $class . '();
+                $rhs->value = [' .
+                implode(',', array_map(self::class . '::float2string', $m->value)) . '];
+                list(, $temp) = $lhs->divide($rhs);
+                return $temp->value;
+            ';
+            eval('$func = function ($x) { ' . $code . '};');
+            self::$custom_reduction = $func;
+            //self::$custom_reduction = \Closure::bind($func, $m, $class);
+            return $func;
+        }
+
+        $lhs = new $class();
+        $lhs_value = &$lhs->value;
+
+        $lhs_value = self::array_repeat(0, $m_length + ($m_length >> 1));
+        $lhs_value[] = 1;
+        $rhs = new $class();
+
+        list($u, $m1) = $lhs->divide($m);
+
+        if ($class::BASE != 26) {
+            $u = $u->value;
+        } else {
+            $lhs_value = self::array_repeat(0, 2 * $m_length);
+            $lhs_value[] = 1;
+            $rhs = new $class();
+
+            list($u) = $lhs->divide($m);
+            $u = $u->value;
+        }
+
+        $m = $m->value;
+        $m1 = $m1->value;
+
+        $cutoff = count($m) + (count($m) >> 1);
+
+        $code = '
+            if (count($n) > ' . (2 * count($m)) . ') {
+                $lhs = new ' . $class . '();
+                $rhs = new ' . $class . '();
+                $lhs->value = $n;
+                $rhs->value = [' .
+                implode(',', array_map(self::class . '::float2string', $m)) . '];
+                list(, $temp) = $lhs->divide($rhs);
+                return $temp->value;
+            }
+
+            $lsd = array_slice($n, 0, ' . $cutoff . ');
+            $msd = array_slice($n, ' . $cutoff . ');';
+
+        $code .= self::generateInlineTrim('msd');
+        $code .= self::generateInlineMultiply('msd', $m1, 'temp', $class);
+        $code .= self::generateInlineAdd('lsd', 'temp', 'n', $class);
+
+        $code .= '$temp = array_slice($n, ' . (count($m) - 1) . ');';
+        $code .= self::generateInlineMultiply('temp', $u, 'temp2', $class);
+        $code .= self::generateInlineTrim('temp2');
+
+        $code .= $class::BASE == 26 ?
+            '$temp = array_slice($temp2, ' . (count($m) + 1) . ');' :
+            '$temp = array_slice($temp2, ' . ((count($m) >> 1) + 1) . ');';
+        $code .= self::generateInlineMultiply('temp', $m, 'temp2', $class);
+        $code .= self::generateInlineTrim('temp2');
+
+        /*
+        if ($class::BASE == 26) {
+            $code.= '$n = array_slice($n, 0, ' . (count($m) + 1) . ');
+                     $temp2 = array_slice($temp2, 0, ' . (count($m) + 1) . ');';
+        }
+        */
+
+        $code .= self::generateInlineSubtract2('n', 'temp2', 'temp', $class);
+
+        $subcode = self::generateInlineSubtract1('temp', $m, 'temp2', $class);
+        $subcode .= '$temp = $temp2;';
+
+        $code .= self::generateInlineCompare($m, 'temp', $subcode);
+
+        $code .= 'return $temp;';
+
+        eval('$func = function ($n) { ' . $code . '};');
+
+        self::$custom_reduction = $func;
+
+        return $func;
+
+        //self::$custom_reduction = \Closure::bind($func, $m, $class);
+    }
+
+    /**
+     * Inline Trim
+     *
+     * Removes leading zeros
+     *
+     * @param string $name
+     * @return string
+     */
+    private static function generateInlineTrim($name)
+    {
+        return '
+            for ($i = count($' . $name . ') - 1; $i >= 0; --$i) {
+                if ($' . $name . '[$i]) {
+                    break;
+                }
+                unset($' . $name . '[$i]);
+            }';
+    }
+
+    /**
+     * Inline Multiply (unknown, known)
+     *
+     * @param string $input
+     * @param array $arr
+     * @param string $output
+     * @param string $class
+     * @return string
+     */
+    private static function generateInlineMultiply($input, array $arr, $output, $class)
+    {
+        if (!count($arr)) {
+            return 'return [];';
+        }
+
+        $regular = '
+            $length = count($' . $input . ');
+            if (!$length) {
+                $' . $output . ' = [];
+            }else{
+            $' . $output . ' = array_fill(0, $length + ' . count($arr) . ', 0);
+            $carry = 0;';
+
+        for ($i = 0; $i < count($arr); $i++) {
+            $regular .= '
+                $subtemp = $' . $input . '[0] * ' . $arr[$i];
+            $regular .= $i ? ' + $carry;' : ';';
+
+            $regular .= '$carry = ';
+            $regular .= $class::BASE === 26 ?
+            'intval($subtemp / 0x4000000);' :
+            '$subtemp >> 31;';
+            $regular .=
+            '$' . $output . '[' . $i . '] = ';
+            if ($class::BASE === 26) {
+                $regular .= '(int) (';
+            }
+            $regular .= '$subtemp - ' . $class::BASE_FULL . ' * $carry';
+            $regular .= $class::BASE === 26 ? ');' : ';';
+        }
+
+        $regular .= '$' . $output . '[' . count($arr) . '] = $carry;';
+
+        $regular .= '
+            for ($i = 1; $i < $length; ++$i) {';
+
+        for ($j = 0; $j < count($arr); $j++) {
+            $regular .= $j ? '$k++;' : '$k = $i;';
+            $regular .= '
+                $subtemp = $' . $output . '[$k] + $' . $input . '[$i] * ' . $arr[$j];
+            $regular .= $j ? ' + $carry;' : ';';
+
+            $regular .= '$carry = ';
+            $regular .= $class::BASE === 26 ?
+                'intval($subtemp / 0x4000000);' :
+                '$subtemp >> 31;';
+            $regular .=
+                '$' . $output . '[$k] = ';
+            if ($class::BASE === 26) {
+                $regular .= '(int) (';
+            }
+            $regular .= '$subtemp - ' . $class::BASE_FULL . ' * $carry';
+            $regular .= $class::BASE === 26 ? ');' : ';';
+        }
+
+        $regular .= '$' . $output . '[++$k] = $carry; $carry = 0;';
+
+        $regular .= '}}';
+
+        //if (count($arr) < 2 * self::KARATSUBA_CUTOFF) {
+        //}
+
+        return $regular;
+    }
+
+    /**
+     * Inline Addition
+     *
+     * @param string $x
+     * @param string $y
+     * @param string $result
+     * @param string $class
+     * @return string
+     */
+    private static function generateInlineAdd($x, $y, $result, $class)
+    {
+        $code = '
+            $length = max(count($' . $x . '), count($' . $y . '));
+            $' . $result . ' = array_pad($' . $x . ', $length + 1, 0);
+            $_' . $y . ' = array_pad($' . $y . ', $length, 0);
+            $carry = 0;
+            for ($i = 0, $j = 1; $j < $length; $i+=2, $j+=2) {
+                $sum = ($' . $result . '[$j] + $_' . $y . '[$j]) * ' . $class::BASE_FULL . '
+                           + $' . $result . '[$i] + $_' . $y . '[$i] +
+                           $carry;
+                $carry = $sum >= ' . self::float2string($class::MAX_DIGIT2) . ';
+                $sum = $carry ? $sum - ' . self::float2string($class::MAX_DIGIT2) . ' : $sum;';
+
+            $code .= $class::BASE === 26 ?
+                '$upper = intval($sum / 0x4000000); $' . $result . '[$i] = (int) ($sum - ' . $class::BASE_FULL . ' * $upper);' :
+                '$upper = $sum >> 31; $' . $result . '[$i] = $sum - ' . $class::BASE_FULL . ' * $upper;';
+            $code .= '
+                $' . $result . '[$j] = $upper;
+            }
+            if ($j == $length) {
+                $sum = $' . $result . '[$i] + $_' . $y . '[$i] + $carry;
+                $carry = $sum >= ' . self::float2string($class::BASE_FULL) . ';
+                $' . $result . '[$i] = $carry ? $sum - ' . self::float2string($class::BASE_FULL) . ' : $sum;
+                ++$i;
+            }
+            if ($carry) {
+                for (; $' . $result . '[$i] == ' . $class::MAX_DIGIT . '; ++$i) {
+                    $' . $result . '[$i] = 0;
+                }
+                ++$' . $result . '[$i];
+            }';
+            $code .= self::generateInlineTrim($result);
+
+            return $code;
+    }
+
+    /**
+     * Inline Subtraction 2
+     *
+     * For when $known is more digits than $unknown. This is the harder use case to optimize for.
+     *
+     * @param string $known
+     * @param string $unknown
+     * @param string $result
+     * @param string $class
+     * @return string
+     */
+    private static function generateInlineSubtract2($known, $unknown, $result, $class)
+    {
+        $code = '
+            $' . $result . ' = $' . $known . ';
+            $carry = 0;
+            $size = count($' . $unknown . ');
+            for ($i = 0, $j = 1; $j < $size; $i+= 2, $j+= 2) {
+                $sum = ($' . $known . '[$j] - $' . $unknown . '[$j]) * ' . $class::BASE_FULL . ' + $' . $known . '[$i]
+                    - $' . $unknown . '[$i]
+                    - $carry;
+                $carry = $sum < 0;
+                if ($carry) {
+                    $sum+= ' . self::float2string($class::MAX_DIGIT2) . ';
+                }
+                $subtemp = ';
+        $code .= $class::BASE === 26 ?
+            'intval($sum / 0x4000000);' :
+            '$sum >> 31;';
+        $code .= '$' . $result . '[$i] = ';
+        if ($class::BASE === 26) {
+            $code .= '(int) (';
+        }
+        $code .= '$sum - ' . $class::BASE_FULL . ' * $subtemp';
+        if ($class::BASE === 26) {
+            $code .= ')';
+        }
+        $code .= ';
+                $' . $result . '[$j] = $subtemp;
+            }
+            if ($j == $size) {
+                $sum = $' . $known . '[$i] - $' . $unknown . '[$i] - $carry;
+                $carry = $sum < 0;
+                $' . $result . '[$i] = $carry ? $sum + ' . $class::BASE_FULL . ' : $sum;
+                ++$i;
+            }
+
+            if ($carry) {
+                for (; !$' . $result . '[$i]; ++$i) {
+                    $' . $result . '[$i] = ' . $class::MAX_DIGIT . ';
+                }
+                --$' . $result . '[$i];
+            }';
+
+        $code .= self::generateInlineTrim($result);
+
+        return $code;
+    }
+
+    /**
+     * Inline Subtraction 1
+     *
+     * For when $unknown is more digits than $known. This is the easier use case to optimize for.
+     *
+     * @param string $unknown
+     * @param array $known
+     * @param string $result
+     * @param string $class
+     * @return string
+     */
+    private static function generateInlineSubtract1($unknown, array $known, $result, $class)
+    {
+        $code = '$' . $result . ' = $' . $unknown . ';';
+        for ($i = 0, $j = 1; $j < count($known); $i += 2, $j += 2) {
+            $code .= '$sum = $' . $unknown . '[' . $j . '] * ' . $class::BASE_FULL . ' + $' . $unknown . '[' . $i . '] - ';
+            $code .= self::float2string($known[$j] * $class::BASE_FULL + $known[$i]);
+            if ($i != 0) {
+                $code .= ' - $carry';
+            }
+
+            $code .= ';
+                if ($carry = $sum < 0) {
+                    $sum+= ' . self::float2string($class::MAX_DIGIT2) . ';
+                }
+                $subtemp = ';
+            $code .= $class::BASE === 26 ?
+                'intval($sum / 0x4000000);' :
+                '$sum >> 31;';
+            $code .= '
+                $' . $result . '[' . $i . '] = ';
+            if ($class::BASE === 26) {
+                $code .= ' (int) (';
+            }
+            $code .= '$sum - ' . $class::BASE_FULL . ' * $subtemp';
+            if ($class::BASE === 26) {
+                $code .= ')';
+            }
+            $code .= ';
+                $' . $result . '[' . $j . '] = $subtemp;';
+        }
+
+        $code .= '$i = ' . $i . ';';
+
+        if ($j == count($known)) {
+            $code .= '
+                $sum = $' . $unknown . '[' . $i . '] - ' . $known[$i] . ' - $carry;
+                $carry = $sum < 0;
+                $' . $result . '[' . $i . '] = $carry ? $sum + ' . $class::BASE_FULL . ' : $sum;
+                ++$i;';
+        }
+
+        $code .= '
+            if ($carry) {
+                for (; !$' . $result . '[$i]; ++$i) {
+                    $' . $result . '[$i] = ' . $class::MAX_DIGIT . ';
+                }
+                --$' . $result . '[$i];
+            }';
+        $code .= self::generateInlineTrim($result);
+
+        return $code;
+    }
+
+    /**
+     * Inline Comparison
+     *
+     * If $unknown >= $known then loop
+     *
+     * @param array $known
+     * @param string $unknown
+     * @param string $subcode
+     * @return string
+     */
+    private static function generateInlineCompare(array $known, $unknown, $subcode)
+    {
+        $uniqid = uniqid();
+        $code = 'loop_' . $uniqid . ':
+            $clength = count($' . $unknown . ');
+            switch (true) {
+                case $clength < ' . count($known) . ':
+                    goto end_' . $uniqid . ';
+                case $clength > ' . count($known) . ':';
+        for ($i = count($known) - 1; $i >= 0; $i--) {
+            $code .= '
+                case $' . $unknown . '[' . $i . '] > ' . $known[$i] . ':
+                    goto subcode_' . $uniqid . ';
+                case $' . $unknown . '[' . $i . '] < ' . $known[$i] . ':
+                    goto end_' . $uniqid . ';';
+        }
+        $code .= '
+                default:
+                    // do subcode
+            }
+
+            subcode_' . $uniqid . ':' . $subcode . '
+            goto loop_' . $uniqid . ';
+
+            end_' . $uniqid . ':';
+
+        return $code;
+    }
+
+    /**
+     * Convert a float to a string
+     *
+     * If you do echo floatval(pow(2, 52)) you'll get 4.6116860184274E+18. It /can/ be displayed without a loss of
+     * precision but displayed in this way there will be precision loss, hence the need for this method.
+     *
+     * @param int|float $num
+     * @return string
+     */
+    private static function float2string($num)
+    {
+        if (!is_float($num)) {
+            return (string) $num;
+        }
+
+        if ($num < 0) {
+            return '-' . self::float2string(abs($num));
+        }
+
+        $temp = '';
+        while ($num) {
+            $temp = fmod($num, 10) . $temp;
+            $num = floor($num / 10);
+        }
+
+        return $temp;
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/PHP/Reductions/Montgomery.php b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/PHP/Reductions/Montgomery.php
new file mode 100644
index 0000000..a34035e
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/PHP/Reductions/Montgomery.php
@@ -0,0 +1,126 @@
+<?php
+
+/**
+ * PHP Montgomery Modular Exponentiation Engine
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Math\BigInteger\Engines\PHP\Reductions;
+
+use phpseclib3\Math\BigInteger\Engines\PHP\Montgomery as Progenitor;
+
+/**
+ * PHP Montgomery Modular Exponentiation Engine
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class Montgomery extends Progenitor
+{
+    /**
+     * Prepare a number for use in Montgomery Modular Reductions
+     *
+     * @param array $x
+     * @param array $n
+     * @param string $class
+     * @return array
+     */
+    protected static function prepareReduce(array $x, array $n, $class)
+    {
+        $lhs = new $class();
+        $lhs->value = array_merge(self::array_repeat(0, count($n)), $x);
+        $rhs = new $class();
+        $rhs->value = $n;
+
+        list(, $temp) = $lhs->divide($rhs);
+        return $temp->value;
+    }
+
+    /**
+     * Montgomery Multiply
+     *
+     * Interleaves the montgomery reduction and long multiplication algorithms together as described in
+     * {@link http://www.cacr.math.uwaterloo.ca/hac/about/chap14.pdf#page=13 HAC 14.36}
+     *
+     * @param array $x
+     * @param array $n
+     * @param string $class
+     * @return array
+     */
+    protected static function reduce(array $x, array $n, $class)
+    {
+        static $cache = [
+            self::VARIABLE => [],
+            self::DATA => []
+        ];
+
+        if (($key = array_search($n, $cache[self::VARIABLE])) === false) {
+            $key = count($cache[self::VARIABLE]);
+            $cache[self::VARIABLE][] = $x;
+            $cache[self::DATA][] = self::modInverse67108864($n, $class);
+        }
+
+        $k = count($n);
+
+        $result = [self::VALUE => $x];
+
+        for ($i = 0; $i < $k; ++$i) {
+            $temp = $result[self::VALUE][$i] * $cache[self::DATA][$key];
+            $temp = $temp - $class::BASE_FULL * ($class::BASE === 26 ? intval($temp / 0x4000000) : ($temp >> 31));
+            $temp = $class::regularMultiply([$temp], $n);
+            $temp = array_merge(self::array_repeat(0, $i), $temp);
+            $result = $class::addHelper($result[self::VALUE], false, $temp, false);
+        }
+
+        $result[self::VALUE] = array_slice($result[self::VALUE], $k);
+
+        if (self::compareHelper($result, false, $n, false) >= 0) {
+            $result = $class::subtractHelper($result[self::VALUE], false, $n, false);
+        }
+
+        return $result[self::VALUE];
+    }
+
+    /**
+     * Modular Inverse of a number mod 2**26 (eg. 67108864)
+     *
+     * Based off of the bnpInvDigit function implemented and justified in the following URL:
+     *
+     * {@link http://www-cs-students.stanford.edu/~tjw/jsbn/jsbn.js}
+     *
+     * The following URL provides more info:
+     *
+     * {@link http://groups.google.com/group/sci.crypt/msg/7a137205c1be7d85}
+     *
+     * As for why we do all the bitmasking...  strange things can happen when converting from floats to ints. For
+     * instance, on some computers, var_dump((int) -4294967297) yields int(-1) and on others, it yields
+     * int(-2147483648).  To avoid problems stemming from this, we use bitmasks to guarantee that ints aren't
+     * auto-converted to floats.  The outermost bitmask is present because without it, there's no guarantee that
+     * the "residue" returned would be the so-called "common residue".  We use fmod, in the last step, because the
+     * maximum possible $x is 26 bits and the maximum $result is 16 bits.  Thus, we have to be able to handle up to
+     * 40 bits, which only 64-bit floating points will support.
+     *
+     * Thanks to Pedro Gimeno Fortea for input!
+     *
+     * @param array $x
+     * @param string $class
+     * @return int
+     */
+    protected static function modInverse67108864(array $x, $class) // 2**26 == 67,108,864
+    {
+        $x = -$x[0];
+        $result = $x & 0x3; // x**-1 mod 2**2
+        $result = ($result * (2 - $x * $result)) & 0xF; // x**-1 mod 2**4
+        $result = ($result * (2 - ($x & 0xFF) * $result))  & 0xFF; // x**-1 mod 2**8
+        $result = ($result * ((2 - ($x & 0xFFFF) * $result) & 0xFFFF)) & 0xFFFF; // x**-1 mod 2**16
+        $result = $class::BASE == 26 ?
+            fmod($result * (2 - fmod($x * $result, $class::BASE_FULL)), $class::BASE_FULL) : // x**-1 mod 2**26
+            ($result * (2 - ($x * $result) % $class::BASE_FULL)) % $class::BASE_FULL;
+        return $result & $class::MAX_DIGIT;
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/PHP/Reductions/MontgomeryMult.php b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/PHP/Reductions/MontgomeryMult.php
new file mode 100644
index 0000000..4fed3c3
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/PHP/Reductions/MontgomeryMult.php
@@ -0,0 +1,76 @@
+<?php
+
+/**
+ * PHP Montgomery Modular Exponentiation Engine with interleaved multiplication
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Math\BigInteger\Engines\PHP\Reductions;
+
+use phpseclib3\Math\BigInteger\Engines\PHP;
+
+/**
+ * PHP Montgomery Modular Exponentiation Engine with interleaved multiplication
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class MontgomeryMult extends Montgomery
+{
+    /**
+     * Montgomery Multiply
+     *
+     * Interleaves the montgomery reduction and long multiplication algorithms together as described in
+     * {@link http://www.cacr.math.uwaterloo.ca/hac/about/chap14.pdf#page=13 HAC 14.36}
+     *
+     * @see self::_prepMontgomery()
+     * @see self::_montgomery()
+     * @param array $x
+     * @param array $y
+     * @param array $m
+     * @param class-string<PHP> $class
+     * @return array
+     */
+    public static function multiplyReduce(array $x, array $y, array $m, $class)
+    {
+        // the following code, although not callable, can be run independently of the above code
+        // although the above code performed better in my benchmarks the following could might
+        // perform better under different circumstances. in lieu of deleting it it's just been
+        // made uncallable
+
+        static $cache = [
+            self::VARIABLE => [],
+            self::DATA => []
+        ];
+
+        if (($key = array_search($m, $cache[self::VARIABLE])) === false) {
+            $key = count($cache[self::VARIABLE]);
+            $cache[self::VARIABLE][] = $m;
+            $cache[self::DATA][] = self::modInverse67108864($m, $class);
+        }
+
+        $n = max(count($x), count($y), count($m));
+        $x = array_pad($x, $n, 0);
+        $y = array_pad($y, $n, 0);
+        $m = array_pad($m, $n, 0);
+        $a = [self::VALUE => self::array_repeat(0, $n + 1)];
+        for ($i = 0; $i < $n; ++$i) {
+            $temp = $a[self::VALUE][0] + $x[$i] * $y[0];
+            $temp = $temp - $class::BASE_FULL * ($class::BASE === 26 ? intval($temp / 0x4000000) : ($temp >> 31));
+            $temp = $temp * $cache[self::DATA][$key];
+            $temp = $temp - $class::BASE_FULL * ($class::BASE === 26 ? intval($temp / 0x4000000) : ($temp >> 31));
+            $temp = $class::addHelper($class::regularMultiply([$x[$i]], $y), false, $class::regularMultiply([$temp], $m), false);
+            $a = $class::addHelper($a[self::VALUE], false, $temp[self::VALUE], false);
+            $a[self::VALUE] = array_slice($a[self::VALUE], 1);
+        }
+        if (self::compareHelper($a[self::VALUE], false, $m, false) >= 0) {
+            $a = $class::subtractHelper($a[self::VALUE], false, $m, false);
+        }
+        return $a[self::VALUE];
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/PHP/Reductions/PowerOfTwo.php b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/PHP/Reductions/PowerOfTwo.php
new file mode 100644
index 0000000..9da133a
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/PHP/Reductions/PowerOfTwo.php
@@ -0,0 +1,59 @@
+<?php
+
+/**
+ * PHP Power of Two Modular Exponentiation Engine
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Math\BigInteger\Engines\PHP\Reductions;
+
+use phpseclib3\Math\BigInteger\Engines\PHP\Base;
+
+/**
+ * PHP Power Of Two Modular Exponentiation Engine
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class PowerOfTwo extends Base
+{
+    /**
+     * Prepare a number for use in Montgomery Modular Reductions
+     *
+     * @param array $x
+     * @param array $n
+     * @param string $class
+     * @return array
+     */
+    protected static function prepareReduce(array $x, array $n, $class)
+    {
+        return self::reduce($x, $n, $class);
+    }
+
+    /**
+     * Power Of Two Reduction
+     *
+     * @param array $x
+     * @param array $n
+     * @param string $class
+     * @return array
+     */
+    protected static function reduce(array $x, array $n, $class)
+    {
+        $lhs = new $class();
+        $lhs->value = $x;
+        $rhs = new $class();
+        $rhs->value = $n;
+
+        $temp = new $class();
+        $temp->value = [1];
+
+        $result = $lhs->bitwise_and($rhs->subtract($temp));
+        return $result->value;
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/PHP32.php b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/PHP32.php
new file mode 100644
index 0000000..3a775e7
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/PHP32.php
@@ -0,0 +1,371 @@
+<?php
+
+/**
+ * Pure-PHP 32-bit BigInteger Engine
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Math\BigInteger\Engines;
+
+/**
+ * Pure-PHP 32-bit Engine.
+ *
+ * Uses 64-bit floats if int size is 4 bits
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+class PHP32 extends PHP
+{
+    // Constants used by PHP.php
+    const BASE = 26;
+    const BASE_FULL = 0x4000000;
+    const MAX_DIGIT = 0x3FFFFFF;
+    const MSB = 0x2000000;
+
+    /**
+     * MAX10 in greatest MAX10LEN satisfying
+     * MAX10 = 10**MAX10LEN <= 2**BASE.
+     */
+    const MAX10 = 10000000;
+
+    /**
+     * MAX10LEN in greatest MAX10LEN satisfying
+     * MAX10 = 10**MAX10LEN <= 2**BASE.
+     */
+    const MAX10LEN = 7;
+    const MAX_DIGIT2 = 4503599627370496;
+
+    /**
+     * Initialize a PHP32 BigInteger Engine instance
+     *
+     * @param int $base
+     * @see parent::initialize()
+     */
+    protected function initialize($base)
+    {
+        if ($base != 256 && $base != -256) {
+            return parent::initialize($base);
+        }
+
+        $val = $this->value;
+        $this->value = [];
+        $vals = &$this->value;
+        $i = strlen($val);
+        if (!$i) {
+            return;
+        }
+
+        while (true) {
+            $i -= 4;
+            if ($i < 0) {
+                if ($i == -4) {
+                    break;
+                }
+                $val = substr($val, 0, 4 + $i);
+                $val = str_pad($val, 4, "\0", STR_PAD_LEFT);
+                if ($val == "\0\0\0\0") {
+                    break;
+                }
+                $i = 0;
+            }
+            list(, $digit) = unpack('N', substr($val, $i, 4));
+            if ($digit < 0) {
+                $digit += 0xFFFFFFFF + 1;
+            }
+            $step = count($vals) & 3;
+            if ($step) {
+                $digit = (int) floor($digit / pow(2, 2 * $step));
+            }
+            if ($step != 3) {
+                $digit = (int) fmod($digit, static::BASE_FULL);
+                $i++;
+            }
+            $vals[] = $digit;
+        }
+        while (end($vals) === 0) {
+            array_pop($vals);
+        }
+        reset($vals);
+    }
+
+    /**
+     * Test for engine validity
+     *
+     * @see parent::__construct()
+     * @return bool
+     */
+    public static function isValidEngine()
+    {
+        return PHP_INT_SIZE >= 4 && !self::testJITOnWindows();
+    }
+
+    /**
+     * Adds two BigIntegers.
+     *
+     * @param PHP32 $y
+     * @return PHP32
+     */
+    public function add(PHP32 $y)
+    {
+        $temp = self::addHelper($this->value, $this->is_negative, $y->value, $y->is_negative);
+
+        return $this->convertToObj($temp);
+    }
+
+    /**
+     * Subtracts two BigIntegers.
+     *
+     * @param PHP32 $y
+     * @return PHP32
+     */
+    public function subtract(PHP32 $y)
+    {
+        $temp = self::subtractHelper($this->value, $this->is_negative, $y->value, $y->is_negative);
+
+        return $this->convertToObj($temp);
+    }
+
+    /**
+     * Multiplies two BigIntegers.
+     *
+     * @param PHP32 $y
+     * @return PHP32
+     */
+    public function multiply(PHP32 $y)
+    {
+        $temp = self::multiplyHelper($this->value, $this->is_negative, $y->value, $y->is_negative);
+
+        return $this->convertToObj($temp);
+    }
+
+    /**
+     * Divides two BigIntegers.
+     *
+     * Returns an array whose first element contains the quotient and whose second element contains the
+     * "common residue".  If the remainder would be positive, the "common residue" and the remainder are the
+     * same.  If the remainder would be negative, the "common residue" is equal to the sum of the remainder
+     * and the divisor (basically, the "common residue" is the first positive modulo).
+     *
+     * @param PHP32 $y
+     * @return array{PHP32, PHP32}
+     */
+    public function divide(PHP32 $y)
+    {
+        return $this->divideHelper($y);
+    }
+
+    /**
+     * Calculates modular inverses.
+     *
+     * Say you have (30 mod 17 * x mod 17) mod 17 == 1.  x can be found using modular inverses.
+     * @param PHP32 $n
+     * @return false|PHP32
+     */
+    public function modInverse(PHP32 $n)
+    {
+        return $this->modInverseHelper($n);
+    }
+
+    /**
+     * Calculates modular inverses.
+     *
+     * Say you have (30 mod 17 * x mod 17) mod 17 == 1.  x can be found using modular inverses.
+     * @param PHP32 $n
+     * @return PHP32[]
+     */
+    public function extendedGCD(PHP32 $n)
+    {
+        return $this->extendedGCDHelper($n);
+    }
+
+    /**
+     * Calculates the greatest common divisor
+     *
+     * Say you have 693 and 609.  The GCD is 21.
+     *
+     * @param PHP32 $n
+     * @return PHP32
+     */
+    public function gcd(PHP32 $n)
+    {
+        return $this->extendedGCD($n)['gcd'];
+    }
+
+    /**
+     * Logical And
+     *
+     * @param PHP32 $x
+     * @return PHP32
+     */
+    public function bitwise_and(PHP32 $x)
+    {
+        return $this->bitwiseAndHelper($x);
+    }
+
+    /**
+     * Logical Or
+     *
+     * @param PHP32 $x
+     * @return PHP32
+     */
+    public function bitwise_or(PHP32 $x)
+    {
+        return $this->bitwiseOrHelper($x);
+    }
+
+    /**
+     * Logical Exclusive Or
+     *
+     * @param PHP32 $x
+     * @return PHP32
+     */
+    public function bitwise_xor(PHP32 $x)
+    {
+        return $this->bitwiseXorHelper($x);
+    }
+
+    /**
+     * Compares two numbers.
+     *
+     * Although one might think !$x->compare($y) means $x != $y, it, in fact, means the opposite.  The reason for this is
+     * demonstrated thusly:
+     *
+     * $x  > $y: $x->compare($y)  > 0
+     * $x  < $y: $x->compare($y)  < 0
+     * $x == $y: $x->compare($y) == 0
+     *
+     * Note how the same comparison operator is used.  If you want to test for equality, use $x->equals($y).
+     *
+     * {@internal Could return $this->subtract($x), but that's not as fast as what we do do.}
+     *
+     * @param PHP32 $y
+     * @return int in case < 0 if $this is less than $y; > 0 if $this is greater than $y, and 0 if they are equal.
+     * @see self::equals()
+     */
+    public function compare(PHP32 $y)
+    {
+        return $this->compareHelper($this->value, $this->is_negative, $y->value, $y->is_negative);
+    }
+
+    /**
+     * Tests the equality of two numbers.
+     *
+     * If you need to see if one number is greater than or less than another number, use BigInteger::compare()
+     *
+     * @param PHP32 $x
+     * @return bool
+     */
+    public function equals(PHP32 $x)
+    {
+        return $this->value === $x->value && $this->is_negative == $x->is_negative;
+    }
+
+    /**
+     * Performs modular exponentiation.
+     *
+     * @param PHP32 $e
+     * @param PHP32 $n
+     * @return PHP32
+     */
+    public function modPow(PHP32 $e, PHP32 $n)
+    {
+        return $this->powModOuter($e, $n);
+    }
+
+    /**
+     * Performs modular exponentiation.
+     *
+     * Alias for modPow().
+     *
+     * @param PHP32 $e
+     * @param PHP32 $n
+     * @return PHP32
+     */
+    public function powMod(PHP32 $e, PHP32 $n)
+    {
+        return $this->powModOuter($e, $n);
+    }
+
+    /**
+     * Generate a random prime number between a range
+     *
+     * If there's not a prime within the given range, false will be returned.
+     *
+     * @param PHP32 $min
+     * @param PHP32 $max
+     * @return false|PHP32
+     */
+    public static function randomRangePrime(PHP32 $min, PHP32 $max)
+    {
+        return self::randomRangePrimeOuter($min, $max);
+    }
+
+    /**
+     * Generate a random number between a range
+     *
+     * Returns a random number between $min and $max where $min and $max
+     * can be defined using one of the two methods:
+     *
+     * BigInteger::randomRange($min, $max)
+     * BigInteger::randomRange($max, $min)
+     *
+     * @param PHP32 $min
+     * @param PHP32 $max
+     * @return PHP32
+     */
+    public static function randomRange(PHP32 $min, PHP32 $max)
+    {
+        return self::randomRangeHelper($min, $max);
+    }
+
+    /**
+     * Performs exponentiation.
+     *
+     * @param PHP32 $n
+     * @return PHP32
+     */
+    public function pow(PHP32 $n)
+    {
+        return $this->powHelper($n);
+    }
+
+    /**
+     * Return the minimum BigInteger between an arbitrary number of BigIntegers.
+     *
+     * @param PHP32 ...$nums
+     * @return PHP32
+     */
+    public static function min(PHP32 ...$nums)
+    {
+        return self::minHelper($nums);
+    }
+
+    /**
+     * Return the maximum BigInteger between an arbitrary number of BigIntegers.
+     *
+     * @param PHP32 ...$nums
+     * @return PHP32
+     */
+    public static function max(PHP32 ...$nums)
+    {
+        return self::maxHelper($nums);
+    }
+
+    /**
+     * Tests BigInteger to see if it is between two integers, inclusive
+     *
+     * @param PHP32 $min
+     * @param PHP32 $max
+     * @return bool
+     */
+    public function between(PHP32 $min, PHP32 $max)
+    {
+        return $this->compare($min) >= 0 && $this->compare($max) <= 0;
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/PHP64.php b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/PHP64.php
new file mode 100644
index 0000000..70a2e17
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/PHP64.php
@@ -0,0 +1,372 @@
+<?php
+
+/**
+ * Pure-PHP 64-bit BigInteger Engine
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Math\BigInteger\Engines;
+
+/**
+ * Pure-PHP 64-bit Engine.
+ *
+ * Uses 64-bit integers if int size is 8 bits
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+class PHP64 extends PHP
+{
+    // Constants used by PHP.php
+    const BASE = 31;
+    const BASE_FULL = 0x80000000;
+    const MAX_DIGIT = 0x7FFFFFFF;
+    const MSB = 0x40000000;
+
+    /**
+     * MAX10 in greatest MAX10LEN satisfying
+     * MAX10 = 10**MAX10LEN <= 2**BASE.
+     */
+    const MAX10 = 1000000000;
+
+    /**
+     * MAX10LEN in greatest MAX10LEN satisfying
+     * MAX10 = 10**MAX10LEN <= 2**BASE.
+     */
+    const MAX10LEN = 9;
+    const MAX_DIGIT2 = 4611686018427387904;
+
+    /**
+     * Initialize a PHP64 BigInteger Engine instance
+     *
+     * @param int $base
+     * @see parent::initialize()
+     */
+    protected function initialize($base)
+    {
+        if ($base != 256 && $base != -256) {
+            return parent::initialize($base);
+        }
+
+        $val = $this->value;
+        $this->value = [];
+        $vals = &$this->value;
+        $i = strlen($val);
+        if (!$i) {
+            return;
+        }
+
+        while (true) {
+            $i -= 4;
+            if ($i < 0) {
+                if ($i == -4) {
+                    break;
+                }
+                $val = substr($val, 0, 4 + $i);
+                $val = str_pad($val, 4, "\0", STR_PAD_LEFT);
+                if ($val == "\0\0\0\0") {
+                    break;
+                }
+                $i = 0;
+            }
+            list(, $digit) = unpack('N', substr($val, $i, 4));
+            $step = count($vals) & 7;
+            if (!$step) {
+                $digit &= static::MAX_DIGIT;
+                $i++;
+            } else {
+                $shift = 8 - $step;
+                $digit >>= $shift;
+                $shift = 32 - $shift;
+                $digit &= (1 << $shift) - 1;
+                $temp = $i > 0 ? ord($val[$i - 1]) : 0;
+                $digit |= ($temp << $shift) & 0x7F000000;
+            }
+            $vals[] = $digit;
+        }
+        while (end($vals) === 0) {
+            array_pop($vals);
+        }
+        reset($vals);
+    }
+
+    /**
+     * Test for engine validity
+     *
+     * @see parent::__construct()
+     * @return bool
+     */
+    public static function isValidEngine()
+    {
+        return PHP_INT_SIZE >= 8 && !self::testJITOnWindows();
+    }
+
+    /**
+     * Adds two BigIntegers.
+     *
+     * @param PHP64 $y
+     * @return PHP64
+     */
+    public function add(PHP64 $y)
+    {
+        $temp = self::addHelper($this->value, $this->is_negative, $y->value, $y->is_negative);
+
+        return $this->convertToObj($temp);
+    }
+
+    /**
+     * Subtracts two BigIntegers.
+     *
+     * @param PHP64 $y
+     * @return PHP64
+     */
+    public function subtract(PHP64 $y)
+    {
+        $temp = self::subtractHelper($this->value, $this->is_negative, $y->value, $y->is_negative);
+
+        return $this->convertToObj($temp);
+    }
+
+    /**
+     * Multiplies two BigIntegers.
+     *
+     * @param PHP64 $y
+     * @return PHP64
+     */
+    public function multiply(PHP64 $y)
+    {
+        $temp = self::multiplyHelper($this->value, $this->is_negative, $y->value, $y->is_negative);
+
+        return $this->convertToObj($temp);
+    }
+
+    /**
+     * Divides two BigIntegers.
+     *
+     * Returns an array whose first element contains the quotient and whose second element contains the
+     * "common residue".  If the remainder would be positive, the "common residue" and the remainder are the
+     * same.  If the remainder would be negative, the "common residue" is equal to the sum of the remainder
+     * and the divisor (basically, the "common residue" is the first positive modulo).
+     *
+     * @param PHP64 $y
+     * @return array{PHP64, PHP64}
+     */
+    public function divide(PHP64 $y)
+    {
+        return $this->divideHelper($y);
+    }
+
+    /**
+     * Calculates modular inverses.
+     *
+     * Say you have (30 mod 17 * x mod 17) mod 17 == 1.  x can be found using modular inverses.
+     * @param PHP64 $n
+     * @return false|PHP64
+     */
+    public function modInverse(PHP64 $n)
+    {
+        return $this->modInverseHelper($n);
+    }
+
+    /**
+     * Calculates modular inverses.
+     *
+     * Say you have (30 mod 17 * x mod 17) mod 17 == 1.  x can be found using modular inverses.
+     * @param PHP64 $n
+     * @return PHP64[]
+     */
+    public function extendedGCD(PHP64 $n)
+    {
+        return $this->extendedGCDHelper($n);
+    }
+
+    /**
+     * Calculates the greatest common divisor
+     *
+     * Say you have 693 and 609.  The GCD is 21.
+     *
+     * @param PHP64 $n
+     * @return PHP64
+     */
+    public function gcd(PHP64 $n)
+    {
+        return $this->extendedGCD($n)['gcd'];
+    }
+
+    /**
+     * Logical And
+     *
+     * @param PHP64 $x
+     * @return PHP64
+     */
+    public function bitwise_and(PHP64 $x)
+    {
+        return $this->bitwiseAndHelper($x);
+    }
+
+    /**
+     * Logical Or
+     *
+     * @param PHP64 $x
+     * @return PHP64
+     */
+    public function bitwise_or(PHP64 $x)
+    {
+        return $this->bitwiseOrHelper($x);
+    }
+
+    /**
+     * Logical Exclusive Or
+     *
+     * @param PHP64 $x
+     * @return PHP64
+     */
+    public function bitwise_xor(PHP64 $x)
+    {
+        return $this->bitwiseXorHelper($x);
+    }
+
+    /**
+     * Compares two numbers.
+     *
+     * Although one might think !$x->compare($y) means $x != $y, it, in fact, means the opposite.  The reason for this is
+     * demonstrated thusly:
+     *
+     * $x  > $y: $x->compare($y)  > 0
+     * $x  < $y: $x->compare($y)  < 0
+     * $x == $y: $x->compare($y) == 0
+     *
+     * Note how the same comparison operator is used.  If you want to test for equality, use $x->equals($y).
+     *
+     * {@internal Could return $this->subtract($x), but that's not as fast as what we do do.}
+     *
+     * @param PHP64 $y
+     * @return int in case < 0 if $this is less than $y; > 0 if $this is greater than $y, and 0 if they are equal.
+     * @see self::equals()
+     */
+    public function compare(PHP64 $y)
+    {
+        return parent::compareHelper($this->value, $this->is_negative, $y->value, $y->is_negative);
+    }
+
+    /**
+     * Tests the equality of two numbers.
+     *
+     * If you need to see if one number is greater than or less than another number, use BigInteger::compare()
+     *
+     * @param PHP64 $x
+     * @return bool
+     */
+    public function equals(PHP64 $x)
+    {
+        return $this->value === $x->value && $this->is_negative == $x->is_negative;
+    }
+
+    /**
+     * Performs modular exponentiation.
+     *
+     * @param PHP64 $e
+     * @param PHP64 $n
+     * @return PHP64
+     */
+    public function modPow(PHP64 $e, PHP64 $n)
+    {
+        return $this->powModOuter($e, $n);
+    }
+
+    /**
+     * Performs modular exponentiation.
+     *
+     * Alias for modPow().
+     *
+     * @param PHP64 $e
+     * @param PHP64 $n
+     * @return PHP64|false
+     */
+    public function powMod(PHP64 $e, PHP64 $n)
+    {
+        return $this->powModOuter($e, $n);
+    }
+
+    /**
+     * Generate a random prime number between a range
+     *
+     * If there's not a prime within the given range, false will be returned.
+     *
+     * @param PHP64 $min
+     * @param PHP64 $max
+     * @return false|PHP64
+     */
+    public static function randomRangePrime(PHP64 $min, PHP64 $max)
+    {
+        return self::randomRangePrimeOuter($min, $max);
+    }
+
+    /**
+     * Generate a random number between a range
+     *
+     * Returns a random number between $min and $max where $min and $max
+     * can be defined using one of the two methods:
+     *
+     * BigInteger::randomRange($min, $max)
+     * BigInteger::randomRange($max, $min)
+     *
+     * @param PHP64 $min
+     * @param PHP64 $max
+     * @return PHP64
+     */
+    public static function randomRange(PHP64 $min, PHP64 $max)
+    {
+        return self::randomRangeHelper($min, $max);
+    }
+
+    /**
+     * Performs exponentiation.
+     *
+     * @param PHP64 $n
+     * @return PHP64
+     */
+    public function pow(PHP64 $n)
+    {
+        return $this->powHelper($n);
+    }
+
+    /**
+     * Return the minimum BigInteger between an arbitrary number of BigIntegers.
+     *
+     * @param PHP64 ...$nums
+     * @return PHP64
+     */
+    public static function min(PHP64 ...$nums)
+    {
+        return self::minHelper($nums);
+    }
+
+    /**
+     * Return the maximum BigInteger between an arbitrary number of BigIntegers.
+     *
+     * @param PHP64 ...$nums
+     * @return PHP64
+     */
+    public static function max(PHP64 ...$nums)
+    {
+        return self::maxHelper($nums);
+    }
+
+    /**
+     * Tests BigInteger to see if it is between two integers, inclusive
+     *
+     * @param PHP64 $min
+     * @param PHP64 $max
+     * @return bool
+     */
+    public function between(PHP64 $min, PHP64 $max)
+    {
+        return $this->compare($min) >= 0 && $this->compare($max) <= 0;
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Math/BinaryField.php b/vendor/phpseclib/phpseclib/phpseclib/Math/BinaryField.php
new file mode 100644
index 0000000..5da8c93
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Math/BinaryField.php
@@ -0,0 +1,203 @@
+<?php
+
+/**
+ * Binary Finite Fields
+ *
+ * Utilizes the factory design pattern
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ */
+
+namespace phpseclib3\Math;
+
+use phpseclib3\Common\Functions\Strings;
+use phpseclib3\Math\BinaryField\Integer;
+use phpseclib3\Math\Common\FiniteField;
+
+/**
+ * Binary Finite Fields
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+class BinaryField extends FiniteField
+{
+    /**
+     * Instance Counter
+     *
+     * @var int
+     */
+    private static $instanceCounter = 0;
+
+    /**
+     * Keeps track of current instance
+     *
+     * @var int
+     */
+    protected $instanceID;
+
+    /** @var BigInteger */
+    private $randomMax;
+
+    /**
+     * Default constructor
+     */
+    public function __construct(...$indices)
+    {
+        $m = array_shift($indices);
+        if ($m > 571) {
+            /* sect571r1 and sect571k1 are the largest binary curves that https://www.secg.org/sec2-v2.pdf defines
+               altho theoretically there may be legit reasons to use binary finite fields with larger degrees
+               imposing a limit on the maximum size is both reasonable and precedented. in particular,
+               http://tools.ietf.org/html/rfc4253#section-6.1 (The Secure Shell (SSH) Transport Layer Protocol) says
+               "implementations SHOULD check that the packet length is reasonable in order for the implementation to
+                avoid denial of service and/or buffer overflow attacks" */
+            throw new \OutOfBoundsException('Degrees larger than 571 are not supported');
+        }
+        $val = str_repeat('0', $m) . '1';
+        foreach ($indices as $index) {
+            $val[$index] = '1';
+        }
+        $modulo = static::base2ToBase256(strrev($val));
+
+        $mStart = 2 * $m - 2;
+        $t = ceil($m / 8);
+        $finalMask = chr((1 << ($m % 8)) - 1);
+        if ($finalMask == "\0") {
+            $finalMask = "\xFF";
+        }
+        $bitLen = $mStart + 1;
+        $pad = ceil($bitLen / 8);
+        $h = $bitLen & 7;
+        $h = $h ? 8 - $h : 0;
+
+        $r = rtrim(substr($val, 0, -1), '0');
+        $u = [static::base2ToBase256(strrev($r))];
+        for ($i = 1; $i < 8; $i++) {
+            $u[] = static::base2ToBase256(strrev(str_repeat('0', $i) . $r));
+        }
+
+        // implements algorithm 2.40 (in section 2.3.5) in "Guide to Elliptic Curve Cryptography"
+        // with W = 8
+        $reduce = function ($c) use ($u, $mStart, $m, $t, $finalMask, $pad, $h) {
+            $c = str_pad($c, $pad, "\0", STR_PAD_LEFT);
+            for ($i = $mStart; $i >= $m;) {
+                $g = $h >> 3;
+                $mask = $h & 7;
+                $mask = $mask ? 1 << (7 - $mask) : 0x80;
+                for (; $mask > 0; $mask >>= 1, $i--, $h++) {
+                    if (ord($c[$g]) & $mask) {
+                        $temp = $i - $m;
+                        $j = $temp >> 3;
+                        $k = $temp & 7;
+                        $t1 = $j ? substr($c, 0, -$j) : $c;
+                        $length = strlen($t1);
+                        if ($length) {
+                            $t2 = str_pad($u[$k], $length, "\0", STR_PAD_LEFT);
+                            $temp = $t1 ^ $t2;
+                            $c = $j ? substr_replace($c, $temp, 0, $length) : $temp;
+                        }
+                    }
+                }
+            }
+            $c = substr($c, -$t);
+            if (strlen($c) == $t) {
+                $c[0] = $c[0] & $finalMask;
+            }
+            return ltrim($c, "\0");
+        };
+
+        $this->instanceID = self::$instanceCounter++;
+        Integer::setModulo($this->instanceID, $modulo);
+        Integer::setRecurringModuloFunction($this->instanceID, $reduce);
+
+        $this->randomMax = new BigInteger($modulo, 2);
+    }
+
+    /**
+     * Returns an instance of a dynamically generated PrimeFieldInteger class
+     *
+     * @param string $num
+     * @return Integer
+     */
+    public function newInteger($num)
+    {
+        return new Integer($this->instanceID, $num instanceof BigInteger ? $num->toBytes() : $num);
+    }
+
+    /**
+     * Returns an integer on the finite field between one and the prime modulo
+     *
+     * @return Integer
+     */
+    public function randomInteger()
+    {
+        static $one;
+        if (!isset($one)) {
+            $one = new BigInteger(1);
+        }
+
+        return new Integer($this->instanceID, BigInteger::randomRange($one, $this->randomMax)->toBytes());
+    }
+
+    /**
+     * Returns the length of the modulo in bytes
+     *
+     * @return int
+     */
+    public function getLengthInBytes()
+    {
+        return strlen(Integer::getModulo($this->instanceID));
+    }
+
+    /**
+     * Returns the length of the modulo in bits
+     *
+     * @return int
+     */
+    public function getLength()
+    {
+        return strlen(Integer::getModulo($this->instanceID)) << 3;
+    }
+
+    /**
+     * Converts a base-2 string to a base-256 string
+     *
+     * @param string $x
+     * @param int|null $size
+     * @return string
+     */
+    public static function base2ToBase256($x, $size = null)
+    {
+        $str = Strings::bits2bin($x);
+
+        $pad = strlen($x) >> 3;
+        if (strlen($x) & 3) {
+            $pad++;
+        }
+        $str = str_pad($str, $pad, "\0", STR_PAD_LEFT);
+        if (isset($size)) {
+            $str = str_pad($str, $size, "\0", STR_PAD_LEFT);
+        }
+
+        return $str;
+    }
+
+    /**
+     * Converts a base-256 string to a base-2 string
+     *
+     * @param string $x
+     * @return string
+     */
+    public static function base256ToBase2($x)
+    {
+        if (function_exists('gmp_import')) {
+            return gmp_strval(gmp_import($x), 2);
+        }
+
+        return Strings::bin2bits($x);
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Math/BinaryField/Integer.php b/vendor/phpseclib/phpseclib/phpseclib/Math/BinaryField/Integer.php
new file mode 100644
index 0000000..8e88058
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Math/BinaryField/Integer.php
@@ -0,0 +1,516 @@
+<?php
+
+/**
+ * Binary Finite Fields
+ *
+ * In a binary finite field numbers are actually polynomial equations. If you
+ * represent the number as a sequence of bits you get a sequence of 1's or 0's.
+ * These 1's or 0's represent the coefficients of the x**n, where n is the
+ * location of the given bit. When you add numbers over a binary finite field
+ * the result should have a coefficient of 1 or 0 as well. Hence addition
+ * and subtraction become the same operation as XOR.
+ * eg. 1 + 1 + 1 == 3 % 2 == 1 or 0 - 1 == -1 % 2 == 1
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ */
+
+namespace phpseclib3\Math\BinaryField;
+
+use phpseclib3\Common\Functions\Strings;
+use phpseclib3\Math\BigInteger;
+use phpseclib3\Math\BinaryField;
+use phpseclib3\Math\Common\FiniteField\Integer as Base;
+
+/**
+ * Binary Finite Fields
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+class Integer extends Base
+{
+    /**
+     * Holds the BinaryField's value
+     *
+     * @var string
+     */
+    protected $value;
+
+    /**
+     * Keeps track of current instance
+     *
+     * @var int
+     */
+    protected $instanceID;
+
+    /**
+     * Holds the PrimeField's modulo
+     *
+     * @var array<int, string>
+     */
+    protected static $modulo;
+
+    /**
+     * Holds a pre-generated function to perform modulo reductions
+     *
+     * @var callable[]
+     */
+    protected static $reduce;
+
+    /**
+     * Default constructor
+     */
+    public function __construct($instanceID, $num = '')
+    {
+        $this->instanceID = $instanceID;
+        if (!strlen($num)) {
+            $this->value = '';
+        } else {
+            $reduce = static::$reduce[$instanceID];
+            $this->value = $reduce($num);
+        }
+    }
+
+    /**
+     * Set the modulo for a given instance
+     * @param int $instanceID
+     * @param string $modulo
+     */
+    public static function setModulo($instanceID, $modulo)
+    {
+        static::$modulo[$instanceID] = $modulo;
+    }
+
+    /**
+     * Set the modulo for a given instance
+     */
+    public static function setRecurringModuloFunction($instanceID, callable $function)
+    {
+        static::$reduce[$instanceID] = $function;
+    }
+
+    /**
+     * Tests a parameter to see if it's of the right instance
+     *
+     * Throws an exception if the incorrect class is being utilized
+     */
+    private static function checkInstance(self $x, self $y)
+    {
+        if ($x->instanceID != $y->instanceID) {
+            throw new \UnexpectedValueException('The instances of the two BinaryField\Integer objects do not match');
+        }
+    }
+
+    /**
+     * Tests the equality of two numbers.
+     *
+     * @return bool
+     */
+    public function equals(self $x)
+    {
+        static::checkInstance($this, $x);
+
+        return $this->value == $x->value;
+    }
+
+    /**
+     * Compares two numbers.
+     *
+     * @return int
+     */
+    public function compare(self $x)
+    {
+        static::checkInstance($this, $x);
+
+        $a = $this->value;
+        $b = $x->value;
+
+        $length = max(strlen($a), strlen($b));
+
+        $a = str_pad($a, $length, "\0", STR_PAD_LEFT);
+        $b = str_pad($b, $length, "\0", STR_PAD_LEFT);
+
+        return strcmp($a, $b);
+    }
+
+    /**
+     * Returns the degree of the polynomial
+     *
+     * @param string $x
+     * @return int
+     */
+    private static function deg($x)
+    {
+        $x = ltrim($x, "\0");
+        $xbit = decbin(ord($x[0]));
+        $xlen = $xbit == '0' ? 0 : strlen($xbit);
+        $len = strlen($x);
+        if (!$len) {
+            return -1;
+        }
+        return 8 * strlen($x) - 9 + $xlen;
+    }
+
+    /**
+     * Perform polynomial division
+     *
+     * @return string[]
+     * @link https://en.wikipedia.org/wiki/Polynomial_greatest_common_divisor#Euclidean_division
+     */
+    private static function polynomialDivide($x, $y)
+    {
+        // in wikipedia's description of the algorithm, lc() is the leading coefficient. over a binary field that's
+        // always going to be 1.
+
+        $q = chr(0);
+        $d = static::deg($y);
+        $r = $x;
+        while (($degr = static::deg($r)) >= $d) {
+            $s = '1' . str_repeat('0', $degr - $d);
+            $s = BinaryField::base2ToBase256($s);
+            $length = max(strlen($s), strlen($q));
+            $q = !isset($q) ? $s :
+                str_pad($q, $length, "\0", STR_PAD_LEFT) ^
+                str_pad($s, $length, "\0", STR_PAD_LEFT);
+            $s = static::polynomialMultiply($s, $y);
+            $length = max(strlen($r), strlen($s));
+            $r = str_pad($r, $length, "\0", STR_PAD_LEFT) ^
+                 str_pad($s, $length, "\0", STR_PAD_LEFT);
+        }
+
+        return [ltrim($q, "\0"), ltrim($r, "\0")];
+    }
+
+    /**
+     * Perform polynomial multiplation in the traditional way
+     *
+     * @return string
+     * @link https://en.wikipedia.org/wiki/Finite_field_arithmetic#Multiplication
+     */
+    private static function regularPolynomialMultiply($x, $y)
+    {
+        $precomputed = [ltrim($x, "\0")];
+        $x = strrev(BinaryField::base256ToBase2($x));
+        $y = strrev(BinaryField::base256ToBase2($y));
+        if (strlen($x) == strlen($y)) {
+            $length = strlen($x);
+        } else {
+            $length = max(strlen($x), strlen($y));
+            $x = str_pad($x, $length, '0');
+            $y = str_pad($y, $length, '0');
+        }
+        $result = str_repeat('0', 2 * $length - 1);
+        $result = BinaryField::base2ToBase256($result);
+        $size = strlen($result);
+        $x = strrev($x);
+
+        // precompute left shift 1 through 7
+        for ($i = 1; $i < 8; $i++) {
+            $precomputed[$i] = BinaryField::base2ToBase256($x . str_repeat('0', $i));
+        }
+        for ($i = 0; $i < strlen($y); $i++) {
+            if ($y[$i] == '1') {
+                $temp = $precomputed[$i & 7] . str_repeat("\0", $i >> 3);
+                $result ^= str_pad($temp, $size, "\0", STR_PAD_LEFT);
+            }
+        }
+
+        return $result;
+    }
+
+    /**
+     * Perform polynomial multiplation
+     *
+     * Uses karatsuba multiplication to reduce x-bit multiplications to a series of 32-bit multiplications
+     *
+     * @return string
+     * @link https://en.wikipedia.org/wiki/Karatsuba_algorithm
+     */
+    private static function polynomialMultiply($x, $y)
+    {
+        if (strlen($x) == strlen($y)) {
+            $length = strlen($x);
+        } else {
+            $length = max(strlen($x), strlen($y));
+            $x = str_pad($x, $length, "\0", STR_PAD_LEFT);
+            $y = str_pad($y, $length, "\0", STR_PAD_LEFT);
+        }
+
+        switch (true) {
+            case PHP_INT_SIZE == 8 && $length <= 4:
+                return $length != 4 ?
+                    self::subMultiply(str_pad($x, 4, "\0", STR_PAD_LEFT), str_pad($y, 4, "\0", STR_PAD_LEFT)) :
+                    self::subMultiply($x, $y);
+            case PHP_INT_SIZE == 4 || $length > 32:
+                return self::regularPolynomialMultiply($x, $y);
+        }
+
+        $m = $length >> 1;
+
+        $x1 = substr($x, 0, -$m);
+        $x0 = substr($x, -$m);
+        $y1 = substr($y, 0, -$m);
+        $y0 = substr($y, -$m);
+
+        $z2 = self::polynomialMultiply($x1, $y1);
+        $z0 = self::polynomialMultiply($x0, $y0);
+        $z1 = self::polynomialMultiply(
+            self::subAdd2($x1, $x0),
+            self::subAdd2($y1, $y0)
+        );
+
+        $z1 = self::subAdd3($z1, $z2, $z0);
+
+        $xy = self::subAdd3(
+            $z2 . str_repeat("\0", 2 * $m),
+            $z1 . str_repeat("\0", $m),
+            $z0
+        );
+
+        return ltrim($xy, "\0");
+    }
+
+    /**
+     * Perform polynomial multiplication on 2x 32-bit numbers, returning
+     * a 64-bit number
+     *
+     * @param string $x
+     * @param string $y
+     * @return string
+     * @link https://www.bearssl.org/constanttime.html#ghash-for-gcm
+     */
+    private static function subMultiply($x, $y)
+    {
+        $x = unpack('N', $x)[1];
+        $y = unpack('N', $y)[1];
+
+        $x0 = $x & 0x11111111;
+        $x1 = $x & 0x22222222;
+        $x2 = $x & 0x44444444;
+        $x3 = $x & 0x88888888;
+
+        $y0 = $y & 0x11111111;
+        $y1 = $y & 0x22222222;
+        $y2 = $y & 0x44444444;
+        $y3 = $y & 0x88888888;
+
+        $z0 = ($x0 * $y0) ^ ($x1 * $y3) ^ ($x2 * $y2) ^ ($x3 * $y1);
+        $z1 = ($x0 * $y1) ^ ($x1 * $y0) ^ ($x2 * $y3) ^ ($x3 * $y2);
+        $z2 = ($x0 * $y2) ^ ($x1 * $y1) ^ ($x2 * $y0) ^ ($x3 * $y3);
+        $z3 = ($x0 * $y3) ^ ($x1 * $y2) ^ ($x2 * $y1) ^ ($x3 * $y0);
+
+        $z0 &= 0x1111111111111111;
+        $z1 &= 0x2222222222222222;
+        $z2 &= 0x4444444444444444;
+        $z3 &= -8608480567731124088; // 0x8888888888888888 gets interpreted as a float
+
+        $z = $z0 | $z1 | $z2 | $z3;
+
+        return pack('J', $z);
+    }
+
+    /**
+     * Adds two numbers
+     *
+     * @param string $x
+     * @param string $y
+     * @return string
+     */
+    private static function subAdd2($x, $y)
+    {
+        $length = max(strlen($x), strlen($y));
+        $x = str_pad($x, $length, "\0", STR_PAD_LEFT);
+        $y = str_pad($y, $length, "\0", STR_PAD_LEFT);
+        return $x ^ $y;
+    }
+
+    /**
+     * Adds three numbers
+     *
+     * @param string $x
+     * @param string $y
+     * @return string
+     */
+    private static function subAdd3($x, $y, $z)
+    {
+        $length = max(strlen($x), strlen($y), strlen($z));
+        $x = str_pad($x, $length, "\0", STR_PAD_LEFT);
+        $y = str_pad($y, $length, "\0", STR_PAD_LEFT);
+        $z = str_pad($z, $length, "\0", STR_PAD_LEFT);
+        return $x ^ $y ^ $z;
+    }
+
+    /**
+     * Adds two BinaryFieldIntegers.
+     *
+     * @return static
+     */
+    public function add(self $y)
+    {
+        static::checkInstance($this, $y);
+
+        $length = strlen(static::$modulo[$this->instanceID]);
+
+        $x = str_pad($this->value, $length, "\0", STR_PAD_LEFT);
+        $y = str_pad($y->value, $length, "\0", STR_PAD_LEFT);
+
+        return new static($this->instanceID, $x ^ $y);
+    }
+
+    /**
+     * Subtracts two BinaryFieldIntegers.
+     *
+     * @return static
+     */
+    public function subtract(self $x)
+    {
+        return $this->add($x);
+    }
+
+    /**
+     * Multiplies two BinaryFieldIntegers.
+     *
+     * @return static
+     */
+    public function multiply(self $y)
+    {
+        static::checkInstance($this, $y);
+
+        return new static($this->instanceID, static::polynomialMultiply($this->value, $y->value));
+    }
+
+    /**
+     * Returns the modular inverse of a BinaryFieldInteger
+     *
+     * @return static
+     */
+    public function modInverse()
+    {
+        $remainder0 = static::$modulo[$this->instanceID];
+        $remainder1 = $this->value;
+
+        if ($remainder1 == '') {
+            return new static($this->instanceID);
+        }
+
+        $aux0 = "\0";
+        $aux1 = "\1";
+        while ($remainder1 != "\1") {
+            list($q, $r) = static::polynomialDivide($remainder0, $remainder1);
+            $remainder0 = $remainder1;
+            $remainder1 = $r;
+            // the auxiliary in row n is given by the sum of the auxiliary in
+            // row n-2 and the product of the quotient and the auxiliary in row
+            // n-1
+            $temp = static::polynomialMultiply($aux1, $q);
+            $aux = str_pad($aux0, strlen($temp), "\0", STR_PAD_LEFT) ^
+                   str_pad($temp, strlen($aux0), "\0", STR_PAD_LEFT);
+            $aux0 = $aux1;
+            $aux1 = $aux;
+        }
+
+        $temp = new static($this->instanceID);
+        $temp->value = ltrim($aux1, "\0");
+        return $temp;
+    }
+
+    /**
+     * Divides two PrimeFieldIntegers.
+     *
+     * @return static
+     */
+    public function divide(self $x)
+    {
+        static::checkInstance($this, $x);
+
+        $x = $x->modInverse();
+        return $this->multiply($x);
+    }
+
+    /**
+     * Negate
+     *
+     * A negative number can be written as 0-12. With modulos, 0 is the same thing as the modulo
+     * so 0-12 is the same thing as modulo-12
+     *
+     * @return object
+     */
+    public function negate()
+    {
+        $x = str_pad($this->value, strlen(static::$modulo[$this->instanceID]), "\0", STR_PAD_LEFT);
+
+        return new static($this->instanceID, $x ^ static::$modulo[$this->instanceID]);
+    }
+
+    /**
+     * Returns the modulo
+     *
+     * @return string
+     */
+    public static function getModulo($instanceID)
+    {
+        return static::$modulo[$instanceID];
+    }
+
+    /**
+     * Converts an Integer to a byte string (eg. base-256).
+     *
+     * @return string
+     */
+    public function toBytes()
+    {
+        return str_pad($this->value, strlen(static::$modulo[$this->instanceID]), "\0", STR_PAD_LEFT);
+    }
+
+    /**
+     * Converts an Integer to a hex string (eg. base-16).
+     *
+     * @return string
+     */
+    public function toHex()
+    {
+        return Strings::bin2hex($this->toBytes());
+    }
+
+    /**
+     * Converts an Integer to a bit string (eg. base-2).
+     *
+     * @return string
+     */
+    public function toBits()
+    {
+        //return str_pad(BinaryField::base256ToBase2($this->value), strlen(static::$modulo[$this->instanceID]), '0', STR_PAD_LEFT);
+        return BinaryField::base256ToBase2($this->value);
+    }
+
+    /**
+     * Converts an Integer to a BigInteger
+     *
+     * @return string
+     */
+    public function toBigInteger()
+    {
+        return new BigInteger($this->value, 256);
+    }
+
+    /**
+     *  __toString() magic method
+     *
+     */
+    public function __toString()
+    {
+        return (string) $this->toBigInteger();
+    }
+
+    /**
+     *  __debugInfo() magic method
+     *
+     */
+    public function __debugInfo()
+    {
+        return ['value' => $this->toHex()];
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Math/Common/FiniteField.php b/vendor/phpseclib/phpseclib/phpseclib/Math/Common/FiniteField.php
new file mode 100644
index 0000000..2ea5f48
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Math/Common/FiniteField.php
@@ -0,0 +1,22 @@
+<?php
+
+/**
+ * Finite Fields Base Class
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ */
+
+namespace phpseclib3\Math\Common;
+
+/**
+ * Finite Fields
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class FiniteField
+{
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Math/Common/FiniteField/Integer.php b/vendor/phpseclib/phpseclib/phpseclib/Math/Common/FiniteField/Integer.php
new file mode 100644
index 0000000..3c959e9
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Math/Common/FiniteField/Integer.php
@@ -0,0 +1,44 @@
+<?php
+
+/**
+ * Finite Field Integer Base Class
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ */
+
+namespace phpseclib3\Math\Common\FiniteField;
+
+/**
+ * Finite Field Integer
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class Integer implements \JsonSerializable
+{
+    /**
+     * JSON Serialize
+     *
+     * Will be called, automatically, when json_encode() is called on a BigInteger object.
+     *
+     * PHP Serialize isn't supported because unserializing would require the factory be
+     * serialized as well and that just sounds like too much
+     *
+     * @return array{hex: string}
+     */
+    #[\ReturnTypeWillChange]
+    public function jsonSerialize()
+    {
+        return ['hex' => $this->toHex(true)];
+    }
+
+    /**
+     * Converts an Integer to a hex string (eg. base-16).
+     *
+     * @return string
+     */
+    abstract public function toHex();
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Math/PrimeField.php b/vendor/phpseclib/phpseclib/phpseclib/Math/PrimeField.php
new file mode 100644
index 0000000..1a0667f
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Math/PrimeField.php
@@ -0,0 +1,118 @@
+<?php
+
+/**
+ * Prime Finite Fields
+ *
+ * Utilizes the factory design pattern
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Math;
+
+use phpseclib3\Math\Common\FiniteField;
+use phpseclib3\Math\PrimeField\Integer;
+
+/**
+ * Prime Finite Fields
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+class PrimeField extends FiniteField
+{
+    /**
+     * Instance Counter
+     *
+     * @var int
+     */
+    private static $instanceCounter = 0;
+
+    /**
+     * Keeps track of current instance
+     *
+     * @var int
+     */
+    protected $instanceID;
+
+    /**
+     * Default constructor
+     */
+    public function __construct(BigInteger $modulo)
+    {
+        if (!$modulo->isPrime()) {
+            throw new \UnexpectedValueException('PrimeField requires a prime number be passed to the constructor');
+        }
+
+        $this->instanceID = self::$instanceCounter++;
+        Integer::setModulo($this->instanceID, $modulo);
+        Integer::setRecurringModuloFunction($this->instanceID, $modulo->createRecurringModuloFunction());
+    }
+
+    /**
+     * Use a custom defined modular reduction function
+     *
+     * @return void
+     */
+    public function setReduction(\Closure $func)
+    {
+        $this->reduce = $func->bindTo($this, $this);
+    }
+
+    /**
+     * Returns an instance of a dynamically generated PrimeFieldInteger class
+     *
+     * @return Integer
+     */
+    public function newInteger(BigInteger $num)
+    {
+        return new Integer($this->instanceID, $num);
+    }
+
+    /**
+     * Returns an integer on the finite field between one and the prime modulo
+     *
+     * @return Integer
+     */
+    public function randomInteger()
+    {
+        static $one;
+        if (!isset($one)) {
+            $one = new BigInteger(1);
+        }
+
+        return new Integer($this->instanceID, BigInteger::randomRange($one, Integer::getModulo($this->instanceID)));
+    }
+
+    /**
+     * Returns the length of the modulo in bytes
+     *
+     * @return int
+     */
+    public function getLengthInBytes()
+    {
+        return Integer::getModulo($this->instanceID)->getLengthInBytes();
+    }
+
+    /**
+     * Returns the length of the modulo in bits
+     *
+     * @return int
+     */
+    public function getLength()
+    {
+        return Integer::getModulo($this->instanceID)->getLength();
+    }
+
+    /**
+     *  Destructor
+     */
+    public function __destruct()
+    {
+        Integer::cleanupCache($this->instanceID);
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Math/PrimeField/Integer.php b/vendor/phpseclib/phpseclib/phpseclib/Math/PrimeField/Integer.php
new file mode 100644
index 0000000..1bd7aaf
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Math/PrimeField/Integer.php
@@ -0,0 +1,419 @@
+<?php
+
+/**
+ * Prime Finite Fields
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ */
+
+namespace phpseclib3\Math\PrimeField;
+
+use phpseclib3\Common\Functions\Strings;
+use phpseclib3\Math\BigInteger;
+use phpseclib3\Math\Common\FiniteField\Integer as Base;
+
+/**
+ * Prime Finite Fields
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+class Integer extends Base
+{
+    /**
+     * Holds the PrimeField's value
+     *
+     * @var BigInteger
+     */
+    protected $value;
+
+    /**
+     * Keeps track of current instance
+     *
+     * @var int
+     */
+    protected $instanceID;
+
+    /**
+     * Holds the PrimeField's modulo
+     *
+     * @var array<int, BigInteger>
+     */
+    protected static $modulo;
+
+    /**
+     * Holds a pre-generated function to perform modulo reductions
+     *
+     * @var array<int, callable(BigInteger):BigInteger>
+     */
+    protected static $reduce;
+
+    /**
+     * Zero
+     *
+     * @var BigInteger
+     */
+    protected static $zero;
+
+    /**
+     * Default constructor
+     *
+     * @param int $instanceID
+     */
+    public function __construct($instanceID, BigInteger $num = null)
+    {
+        $this->instanceID = $instanceID;
+        if (!isset($num)) {
+            $this->value = clone static::$zero[static::class];
+        } else {
+            $reduce = static::$reduce[$instanceID];
+            $this->value = $reduce($num);
+        }
+    }
+
+    /**
+     * Set the modulo for a given instance
+     *
+     * @param int $instanceID
+     * @return void
+     */
+    public static function setModulo($instanceID, BigInteger $modulo)
+    {
+        static::$modulo[$instanceID] = $modulo;
+    }
+
+    /**
+     * Set the modulo for a given instance
+     *
+     * @param int $instanceID
+     * @return void
+     */
+    public static function setRecurringModuloFunction($instanceID, callable $function)
+    {
+        static::$reduce[$instanceID] = $function;
+        if (!isset(static::$zero[static::class])) {
+            static::$zero[static::class] = new BigInteger();
+        }
+    }
+
+    /**
+     * Delete the modulo for a given instance
+     */
+    public static function cleanupCache($instanceID)
+    {
+        unset(static::$modulo[$instanceID]);
+        unset(static::$reduce[$instanceID]);
+    }
+
+    /**
+     * Returns the modulo
+     *
+     * @param int $instanceID
+     * @return BigInteger
+     */
+    public static function getModulo($instanceID)
+    {
+        return static::$modulo[$instanceID];
+    }
+
+    /**
+     * Tests a parameter to see if it's of the right instance
+     *
+     * Throws an exception if the incorrect class is being utilized
+     *
+     * @return void
+     */
+    public static function checkInstance(self $x, self $y)
+    {
+        if ($x->instanceID != $y->instanceID) {
+            throw new \UnexpectedValueException('The instances of the two PrimeField\Integer objects do not match');
+        }
+    }
+
+    /**
+     * Tests the equality of two numbers.
+     *
+     * @return bool
+     */
+    public function equals(self $x)
+    {
+        static::checkInstance($this, $x);
+
+        return $this->value->equals($x->value);
+    }
+
+    /**
+     * Compares two numbers.
+     *
+     * @return int
+     */
+    public function compare(self $x)
+    {
+        static::checkInstance($this, $x);
+
+        return $this->value->compare($x->value);
+    }
+
+    /**
+     * Adds two PrimeFieldIntegers.
+     *
+     * @return static
+     */
+    public function add(self $x)
+    {
+        static::checkInstance($this, $x);
+
+        $temp = new static($this->instanceID);
+        $temp->value = $this->value->add($x->value);
+        if ($temp->value->compare(static::$modulo[$this->instanceID]) >= 0) {
+            $temp->value = $temp->value->subtract(static::$modulo[$this->instanceID]);
+        }
+
+        return $temp;
+    }
+
+    /**
+     * Subtracts two PrimeFieldIntegers.
+     *
+     * @return static
+     */
+    public function subtract(self $x)
+    {
+        static::checkInstance($this, $x);
+
+        $temp = new static($this->instanceID);
+        $temp->value = $this->value->subtract($x->value);
+        if ($temp->value->isNegative()) {
+            $temp->value = $temp->value->add(static::$modulo[$this->instanceID]);
+        }
+
+        return $temp;
+    }
+
+    /**
+     * Multiplies two PrimeFieldIntegers.
+     *
+     * @return static
+     */
+    public function multiply(self $x)
+    {
+        static::checkInstance($this, $x);
+
+        return new static($this->instanceID, $this->value->multiply($x->value));
+    }
+
+    /**
+     * Divides two PrimeFieldIntegers.
+     *
+     * @return static
+     */
+    public function divide(self $x)
+    {
+        static::checkInstance($this, $x);
+
+        $denominator = $x->value->modInverse(static::$modulo[$this->instanceID]);
+        return new static($this->instanceID, $this->value->multiply($denominator));
+    }
+
+    /**
+     * Performs power operation on a PrimeFieldInteger.
+     *
+     * @return static
+     */
+    public function pow(BigInteger $x)
+    {
+        $temp = new static($this->instanceID);
+        $temp->value = $this->value->powMod($x, static::$modulo[$this->instanceID]);
+
+        return $temp;
+    }
+
+    /**
+     * Calculates the square root
+     *
+     * @link https://en.wikipedia.org/wiki/Tonelli%E2%80%93Shanks_algorithm
+     * @return static|false
+     */
+    public function squareRoot()
+    {
+        static $one, $two;
+        if (!isset($one)) {
+            $one = new BigInteger(1);
+            $two = new BigInteger(2);
+        }
+        $reduce = static::$reduce[$this->instanceID];
+        $p_1 = static::$modulo[$this->instanceID]->subtract($one);
+        $q = clone $p_1;
+        $s = BigInteger::scan1divide($q);
+        list($pow) = $p_1->divide($two);
+        for ($z = $one; !$z->equals(static::$modulo[$this->instanceID]); $z = $z->add($one)) {
+            $temp = $z->powMod($pow, static::$modulo[$this->instanceID]);
+            if ($temp->equals($p_1)) {
+                break;
+            }
+        }
+
+        $m = new BigInteger($s);
+        $c = $z->powMod($q, static::$modulo[$this->instanceID]);
+        $t = $this->value->powMod($q, static::$modulo[$this->instanceID]);
+        list($temp) = $q->add($one)->divide($two);
+        $r = $this->value->powMod($temp, static::$modulo[$this->instanceID]);
+
+        while (!$t->equals($one)) {
+            for ($i = clone $one; $i->compare($m) < 0; $i = $i->add($one)) {
+                if ($t->powMod($two->pow($i), static::$modulo[$this->instanceID])->equals($one)) {
+                    break;
+                }
+            }
+
+            if ($i->compare($m) == 0) {
+                return false;
+            }
+            $b = $c->powMod($two->pow($m->subtract($i)->subtract($one)), static::$modulo[$this->instanceID]);
+            $m = $i;
+            $c = $reduce($b->multiply($b));
+            $t = $reduce($t->multiply($c));
+            $r = $reduce($r->multiply($b));
+        }
+
+        return new static($this->instanceID, $r);
+    }
+
+    /**
+     * Is Odd?
+     *
+     * @return bool
+     */
+    public function isOdd()
+    {
+        return $this->value->isOdd();
+    }
+
+    /**
+     * Negate
+     *
+     * A negative number can be written as 0-12. With modulos, 0 is the same thing as the modulo
+     * so 0-12 is the same thing as modulo-12
+     *
+     * @return static
+     */
+    public function negate()
+    {
+        return new static($this->instanceID, static::$modulo[$this->instanceID]->subtract($this->value));
+    }
+
+    /**
+     * Converts an Integer to a byte string (eg. base-256).
+     *
+     * @return string
+     */
+    public function toBytes()
+    {
+        if (isset(static::$modulo[$this->instanceID])) {
+            $length = static::$modulo[$this->instanceID]->getLengthInBytes();
+            return str_pad($this->value->toBytes(), $length, "\0", STR_PAD_LEFT);
+        }
+        return $this->value->toBytes();
+    }
+
+    /**
+     * Converts an Integer to a hex string (eg. base-16).
+     *
+     * @return string
+     */
+    public function toHex()
+    {
+        return Strings::bin2hex($this->toBytes());
+    }
+
+    /**
+     * Converts an Integer to a bit string (eg. base-2).
+     *
+     * @return string
+     */
+    public function toBits()
+    {
+        // return $this->value->toBits();
+        static $length;
+        if (!isset($length)) {
+            $length = static::$modulo[$this->instanceID]->getLength();
+        }
+
+        return str_pad($this->value->toBits(), $length, '0', STR_PAD_LEFT);
+    }
+
+    /**
+     * Returns the w-ary non-adjacent form (wNAF)
+     *
+     * @param int $w optional
+     * @return array<int, int>
+     */
+    public function getNAF($w = 1)
+    {
+        $w++;
+
+        $mask = new BigInteger((1 << $w) - 1);
+        $sub = new BigInteger(1 << $w);
+        //$sub = new BigInteger(1 << ($w - 1));
+        $d = $this->toBigInteger();
+        $d_i = [];
+
+        $i = 0;
+        while ($d->compare(static::$zero[static::class]) > 0) {
+            if ($d->isOdd()) {
+                // start mods
+
+                $bigInteger = $d->testBit($w - 1) ?
+                    $d->bitwise_and($mask)->subtract($sub) :
+                    //$sub->subtract($d->bitwise_and($mask)) :
+                    $d->bitwise_and($mask);
+                // end mods
+                $d = $d->subtract($bigInteger);
+                $d_i[$i] = (int) $bigInteger->toString();
+            } else {
+                $d_i[$i] = 0;
+            }
+            $shift = !$d->equals(static::$zero[static::class]) && $d->bitwise_and($mask)->equals(static::$zero[static::class]) ? $w : 1; // $w or $w + 1?
+            $d = $d->bitwise_rightShift($shift);
+            while (--$shift > 0) {
+                $d_i[++$i] = 0;
+            }
+            $i++;
+        }
+
+        return $d_i;
+    }
+
+    /**
+     * Converts an Integer to a BigInteger
+     *
+     * @return BigInteger
+     */
+    public function toBigInteger()
+    {
+        return clone $this->value;
+    }
+
+    /**
+     *  __toString() magic method
+     *
+     * @return string
+     */
+    public function __toString()
+    {
+        return (string) $this->value;
+    }
+
+    /**
+     *  __debugInfo() magic method
+     *
+     * @return array
+     */
+    public function __debugInfo()
+    {
+        return ['value' => $this->toHex()];
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Net/SFTP.php b/vendor/phpseclib/phpseclib/phpseclib/Net/SFTP.php
new file mode 100644
index 0000000..144ef79
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Net/SFTP.php
@@ -0,0 +1,3547 @@
+<?php
+
+/**
+ * Pure-PHP implementation of SFTP.
+ *
+ * PHP version 5
+ *
+ * Supports SFTPv2/3/4/5/6. Defaults to v3.
+ *
+ * The API for this library is modeled after the API from PHP's {@link http://php.net/book.ftp FTP extension}.
+ *
+ * Here's a short example of how to use this library:
+ * <code>
+ * <?php
+ *    include 'vendor/autoload.php';
+ *
+ *    $sftp = new \phpseclib3\Net\SFTP('www.domain.tld');
+ *    if (!$sftp->login('username', 'password')) {
+ *        exit('Login Failed');
+ *    }
+ *
+ *    echo $sftp->pwd() . "\r\n";
+ *    $sftp->put('filename.ext', 'hello, world!');
+ *    print_r($sftp->nlist());
+ * ?>
+ * </code>
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2009 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Net;
+
+use phpseclib3\Common\Functions\Strings;
+use phpseclib3\Exception\FileNotFoundException;
+
+/**
+ * Pure-PHP implementations of SFTP.
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+class SFTP extends SSH2
+{
+    /**
+     * SFTP channel constant
+     *
+     * \phpseclib3\Net\SSH2::exec() uses 0 and \phpseclib3\Net\SSH2::read() / \phpseclib3\Net\SSH2::write() use 1.
+     *
+     * @see \phpseclib3\Net\SSH2::send_channel_packet()
+     * @see \phpseclib3\Net\SSH2::get_channel_packet()
+     */
+    const CHANNEL = 0x100;
+
+    /**
+     * Reads data from a local file.
+     *
+     * @see \phpseclib3\Net\SFTP::put()
+     */
+    const SOURCE_LOCAL_FILE = 1;
+    /**
+     * Reads data from a string.
+     *
+     * @see \phpseclib3\Net\SFTP::put()
+     */
+    // this value isn't really used anymore but i'm keeping it reserved for historical reasons
+    const SOURCE_STRING = 2;
+    /**
+     * Reads data from callback:
+     * function callback($length) returns string to proceed, null for EOF
+     *
+     * @see \phpseclib3\Net\SFTP::put()
+     */
+    const SOURCE_CALLBACK = 16;
+    /**
+     * Resumes an upload
+     *
+     * @see \phpseclib3\Net\SFTP::put()
+     */
+    const RESUME = 4;
+    /**
+     * Append a local file to an already existing remote file
+     *
+     * @see \phpseclib3\Net\SFTP::put()
+     */
+    const RESUME_START = 8;
+
+    /**
+     * Packet Types
+     *
+     * @see self::__construct()
+     * @var array
+     * @access private
+     */
+    private static $packet_types = [];
+
+    /**
+     * Status Codes
+     *
+     * @see self::__construct()
+     * @var array
+     * @access private
+     */
+    private static $status_codes = [];
+
+    /** @var array<int, string> */
+    private static $attributes;
+
+    /** @var array<int, string> */
+    private static $open_flags;
+
+    /** @var array<int, string> */
+    private static $open_flags5;
+
+    /** @var array<int, string> */
+    private static $file_types;
+
+    /**
+     * The Request ID
+     *
+     * The request ID exists in the off chance that a packet is sent out-of-order.  Of course, this library doesn't support
+     * concurrent actions, so it's somewhat academic, here.
+     *
+     * @var boolean
+     * @see self::_send_sftp_packet()
+     */
+    private $use_request_id = false;
+
+    /**
+     * The Packet Type
+     *
+     * The request ID exists in the off chance that a packet is sent out-of-order.  Of course, this library doesn't support
+     * concurrent actions, so it's somewhat academic, here.
+     *
+     * @var int
+     * @see self::_get_sftp_packet()
+     */
+    private $packet_type = -1;
+
+    /**
+     * Packet Buffer
+     *
+     * @var string
+     * @see self::_get_sftp_packet()
+     */
+    private $packet_buffer = '';
+
+    /**
+     * Extensions supported by the server
+     *
+     * @var array
+     * @see self::_initChannel()
+     */
+    private $extensions = [];
+
+    /**
+     * Server SFTP version
+     *
+     * @var int
+     * @see self::_initChannel()
+     */
+    private $version;
+
+    /**
+     * Default Server SFTP version
+     *
+     * @var int
+     * @see self::_initChannel()
+     */
+    private $defaultVersion;
+
+    /**
+     * Preferred SFTP version
+     *
+     * @var int
+     * @see self::_initChannel()
+     */
+    private $preferredVersion = 3;
+
+    /**
+     * Current working directory
+     *
+     * @var string|bool
+     * @see self::realpath()
+     * @see self::chdir()
+     */
+    private $pwd = false;
+
+    /**
+     * Packet Type Log
+     *
+     * @see self::getLog()
+     * @var array
+     */
+    private $packet_type_log = [];
+
+    /**
+     * Packet Log
+     *
+     * @see self::getLog()
+     * @var array
+     */
+    private $packet_log = [];
+
+    /**
+     * Real-time log file pointer
+     *
+     * @see self::_append_log()
+     * @var resource|closed-resource
+     */
+    private $realtime_log_file;
+
+    /**
+     * Real-time log file size
+     *
+     * @see self::_append_log()
+     * @var int
+     */
+    private $realtime_log_size;
+
+    /**
+     * Real-time log file wrap boolean
+     *
+     * @see self::_append_log()
+     * @var bool
+     */
+    private $realtime_log_wrap;
+
+    /**
+     * Current log size
+     *
+     * Should never exceed self::LOG_MAX_SIZE
+     *
+     * @var int
+     */
+    private $log_size;
+
+    /**
+     * Error information
+     *
+     * @see self::getSFTPErrors()
+     * @see self::getLastSFTPError()
+     * @var array
+     */
+    private $sftp_errors = [];
+
+    /**
+     * Stat Cache
+     *
+     * Rather than always having to open a directory and close it immediately there after to see if a file is a directory
+     * we'll cache the results.
+     *
+     * @see self::_update_stat_cache()
+     * @see self::_remove_from_stat_cache()
+     * @see self::_query_stat_cache()
+     * @var array
+     */
+    private $stat_cache = [];
+
+    /**
+     * Max SFTP Packet Size
+     *
+     * @see self::__construct()
+     * @see self::get()
+     * @var int
+     */
+    private $max_sftp_packet;
+
+    /**
+     * Stat Cache Flag
+     *
+     * @see self::disableStatCache()
+     * @see self::enableStatCache()
+     * @var bool
+     */
+    private $use_stat_cache = true;
+
+    /**
+     * Sort Options
+     *
+     * @see self::_comparator()
+     * @see self::setListOrder()
+     * @var array
+     */
+    protected $sortOptions = [];
+
+    /**
+     * Canonicalization Flag
+     *
+     * Determines whether or not paths should be canonicalized before being
+     * passed on to the remote server.
+     *
+     * @see self::enablePathCanonicalization()
+     * @see self::disablePathCanonicalization()
+     * @see self::realpath()
+     * @var bool
+     */
+    private $canonicalize_paths = true;
+
+    /**
+     * Request Buffers
+     *
+     * @see self::_get_sftp_packet()
+     * @var array
+     */
+    private $requestBuffer = [];
+
+    /**
+     * Preserve timestamps on file downloads / uploads
+     *
+     * @see self::get()
+     * @see self::put()
+     * @var bool
+     */
+    private $preserveTime = false;
+
+    /**
+     * Arbitrary Length Packets Flag
+     *
+     * Determines whether or not packets of any length should be allowed,
+     * in cases where the server chooses the packet length (such as
+     * directory listings). By default, packets are only allowed to be
+     * 256 * 1024 bytes (SFTP_MAX_MSG_LENGTH from OpenSSH's sftp-common.h)
+     *
+     * @see self::enableArbitraryLengthPackets()
+     * @see self::_get_sftp_packet()
+     * @var bool
+     */
+    private $allow_arbitrary_length_packets = false;
+
+    /**
+     * Was the last packet due to the channels being closed or not?
+     *
+     * @see self::get()
+     * @see self::get_sftp_packet()
+     * @var bool
+     */
+    private $channel_close = false;
+
+    /**
+     * Has the SFTP channel been partially negotiated?
+     *
+     * @var bool
+     */
+    private $partial_init = false;
+
+    /**
+     * Default Constructor.
+     *
+     * Connects to an SFTP server
+     *
+     * $host can either be a string, representing the host, or a stream resource.
+     *
+     * @param mixed $host
+     * @param int $port
+     * @param int $timeout
+     */
+    public function __construct($host, $port = 22, $timeout = 10)
+    {
+        parent::__construct($host, $port, $timeout);
+
+        $this->max_sftp_packet = 1 << 15;
+
+        if (empty(self::$packet_types)) {
+            self::$packet_types = [
+                1  => 'NET_SFTP_INIT',
+                2  => 'NET_SFTP_VERSION',
+                3  => 'NET_SFTP_OPEN',
+                4  => 'NET_SFTP_CLOSE',
+                5  => 'NET_SFTP_READ',
+                6  => 'NET_SFTP_WRITE',
+                7  => 'NET_SFTP_LSTAT',
+                9  => 'NET_SFTP_SETSTAT',
+                10 => 'NET_SFTP_FSETSTAT',
+                11 => 'NET_SFTP_OPENDIR',
+                12 => 'NET_SFTP_READDIR',
+                13 => 'NET_SFTP_REMOVE',
+                14 => 'NET_SFTP_MKDIR',
+                15 => 'NET_SFTP_RMDIR',
+                16 => 'NET_SFTP_REALPATH',
+                17 => 'NET_SFTP_STAT',
+                18 => 'NET_SFTP_RENAME',
+                19 => 'NET_SFTP_READLINK',
+                20 => 'NET_SFTP_SYMLINK',
+                21 => 'NET_SFTP_LINK',
+
+                101 => 'NET_SFTP_STATUS',
+                102 => 'NET_SFTP_HANDLE',
+                103 => 'NET_SFTP_DATA',
+                104 => 'NET_SFTP_NAME',
+                105 => 'NET_SFTP_ATTRS',
+
+                200 => 'NET_SFTP_EXTENDED'
+            ];
+            self::$status_codes = [
+                0 => 'NET_SFTP_STATUS_OK',
+                1 => 'NET_SFTP_STATUS_EOF',
+                2 => 'NET_SFTP_STATUS_NO_SUCH_FILE',
+                3 => 'NET_SFTP_STATUS_PERMISSION_DENIED',
+                4 => 'NET_SFTP_STATUS_FAILURE',
+                5 => 'NET_SFTP_STATUS_BAD_MESSAGE',
+                6 => 'NET_SFTP_STATUS_NO_CONNECTION',
+                7 => 'NET_SFTP_STATUS_CONNECTION_LOST',
+                8 => 'NET_SFTP_STATUS_OP_UNSUPPORTED',
+                9 => 'NET_SFTP_STATUS_INVALID_HANDLE',
+                10 => 'NET_SFTP_STATUS_NO_SUCH_PATH',
+                11 => 'NET_SFTP_STATUS_FILE_ALREADY_EXISTS',
+                12 => 'NET_SFTP_STATUS_WRITE_PROTECT',
+                13 => 'NET_SFTP_STATUS_NO_MEDIA',
+                14 => 'NET_SFTP_STATUS_NO_SPACE_ON_FILESYSTEM',
+                15 => 'NET_SFTP_STATUS_QUOTA_EXCEEDED',
+                16 => 'NET_SFTP_STATUS_UNKNOWN_PRINCIPAL',
+                17 => 'NET_SFTP_STATUS_LOCK_CONFLICT',
+                18 => 'NET_SFTP_STATUS_DIR_NOT_EMPTY',
+                19 => 'NET_SFTP_STATUS_NOT_A_DIRECTORY',
+                20 => 'NET_SFTP_STATUS_INVALID_FILENAME',
+                21 => 'NET_SFTP_STATUS_LINK_LOOP',
+                22 => 'NET_SFTP_STATUS_CANNOT_DELETE',
+                23 => 'NET_SFTP_STATUS_INVALID_PARAMETER',
+                24 => 'NET_SFTP_STATUS_FILE_IS_A_DIRECTORY',
+                25 => 'NET_SFTP_STATUS_BYTE_RANGE_LOCK_CONFLICT',
+                26 => 'NET_SFTP_STATUS_BYTE_RANGE_LOCK_REFUSED',
+                27 => 'NET_SFTP_STATUS_DELETE_PENDING',
+                28 => 'NET_SFTP_STATUS_FILE_CORRUPT',
+                29 => 'NET_SFTP_STATUS_OWNER_INVALID',
+                30 => 'NET_SFTP_STATUS_GROUP_INVALID',
+                31 => 'NET_SFTP_STATUS_NO_MATCHING_BYTE_RANGE_LOCK'
+            ];
+            // http://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#section-7.1
+            // the order, in this case, matters quite a lot - see \phpseclib3\Net\SFTP::_parseAttributes() to understand why
+            self::$attributes = [
+                0x00000001 => 'NET_SFTP_ATTR_SIZE',
+                0x00000002 => 'NET_SFTP_ATTR_UIDGID',          // defined in SFTPv3, removed in SFTPv4+
+                0x00000080 => 'NET_SFTP_ATTR_OWNERGROUP',      // defined in SFTPv4+
+                0x00000004 => 'NET_SFTP_ATTR_PERMISSIONS',
+                0x00000008 => 'NET_SFTP_ATTR_ACCESSTIME',
+                0x00000010 => 'NET_SFTP_ATTR_CREATETIME',      // SFTPv4+
+                0x00000020 => 'NET_SFTP_ATTR_MODIFYTIME',
+                0x00000040 => 'NET_SFTP_ATTR_ACL',
+                0x00000100 => 'NET_SFTP_ATTR_SUBSECOND_TIMES',
+                0x00000200 => 'NET_SFTP_ATTR_BITS',            // SFTPv5+
+                0x00000400 => 'NET_SFTP_ATTR_ALLOCATION_SIZE', // SFTPv6+
+                0x00000800 => 'NET_SFTP_ATTR_TEXT_HINT',
+                0x00001000 => 'NET_SFTP_ATTR_MIME_TYPE',
+                0x00002000 => 'NET_SFTP_ATTR_LINK_COUNT',
+                0x00004000 => 'NET_SFTP_ATTR_UNTRANSLATED_NAME',
+                0x00008000 => 'NET_SFTP_ATTR_CTIME',
+                // 0x80000000 will yield a floating point on 32-bit systems and converting floating points to integers
+                // yields inconsistent behavior depending on how php is compiled.  so we left shift -1 (which, in
+                // two's compliment, consists of all 1 bits) by 31.  on 64-bit systems this'll yield 0xFFFFFFFF80000000.
+                // that's not a problem, however, and 'anded' and a 32-bit number, as all the leading 1 bits are ignored.
+                (PHP_INT_SIZE == 4 ? (-1 << 31) : 0x80000000) => 'NET_SFTP_ATTR_EXTENDED'
+            ];
+            // http://tools.ietf.org/html/draft-ietf-secsh-filexfer-04#section-6.3
+            // the flag definitions change somewhat in SFTPv5+.  if SFTPv5+ support is added to this library, maybe name
+            // the array for that $this->open5_flags and similarly alter the constant names.
+            self::$open_flags = [
+                0x00000001 => 'NET_SFTP_OPEN_READ',
+                0x00000002 => 'NET_SFTP_OPEN_WRITE',
+                0x00000004 => 'NET_SFTP_OPEN_APPEND',
+                0x00000008 => 'NET_SFTP_OPEN_CREATE',
+                0x00000010 => 'NET_SFTP_OPEN_TRUNCATE',
+                0x00000020 => 'NET_SFTP_OPEN_EXCL',
+                0x00000040 => 'NET_SFTP_OPEN_TEXT' // defined in SFTPv4
+            ];
+            // SFTPv5+ changed the flags up:
+            // https://datatracker.ietf.org/doc/html/draft-ietf-secsh-filexfer-13#section-8.1.1.3
+            self::$open_flags5 = [
+                // when SSH_FXF_ACCESS_DISPOSITION is a 3 bit field that controls how the file is opened
+                0x00000000 => 'NET_SFTP_OPEN_CREATE_NEW',
+                0x00000001 => 'NET_SFTP_OPEN_CREATE_TRUNCATE',
+                0x00000002 => 'NET_SFTP_OPEN_OPEN_EXISTING',
+                0x00000003 => 'NET_SFTP_OPEN_OPEN_OR_CREATE',
+                0x00000004 => 'NET_SFTP_OPEN_TRUNCATE_EXISTING',
+                // the rest of the flags are not supported
+                0x00000008 => 'NET_SFTP_OPEN_APPEND_DATA', // "the offset field of SS_FXP_WRITE requests is ignored"
+                0x00000010 => 'NET_SFTP_OPEN_APPEND_DATA_ATOMIC',
+                0x00000020 => 'NET_SFTP_OPEN_TEXT_MODE',
+                0x00000040 => 'NET_SFTP_OPEN_BLOCK_READ',
+                0x00000080 => 'NET_SFTP_OPEN_BLOCK_WRITE',
+                0x00000100 => 'NET_SFTP_OPEN_BLOCK_DELETE',
+                0x00000200 => 'NET_SFTP_OPEN_BLOCK_ADVISORY',
+                0x00000400 => 'NET_SFTP_OPEN_NOFOLLOW',
+                0x00000800 => 'NET_SFTP_OPEN_DELETE_ON_CLOSE',
+                0x00001000 => 'NET_SFTP_OPEN_ACCESS_AUDIT_ALARM_INFO',
+                0x00002000 => 'NET_SFTP_OPEN_ACCESS_BACKUP',
+                0x00004000 => 'NET_SFTP_OPEN_BACKUP_STREAM',
+                0x00008000 => 'NET_SFTP_OPEN_OVERRIDE_OWNER',
+            ];
+            // http://tools.ietf.org/html/draft-ietf-secsh-filexfer-04#section-5.2
+            // see \phpseclib3\Net\SFTP::_parseLongname() for an explanation
+            self::$file_types = [
+                1 => 'NET_SFTP_TYPE_REGULAR',
+                2 => 'NET_SFTP_TYPE_DIRECTORY',
+                3 => 'NET_SFTP_TYPE_SYMLINK',
+                4 => 'NET_SFTP_TYPE_SPECIAL',
+                5 => 'NET_SFTP_TYPE_UNKNOWN',
+                // the following types were first defined for use in SFTPv5+
+                // http://tools.ietf.org/html/draft-ietf-secsh-filexfer-05#section-5.2
+                6 => 'NET_SFTP_TYPE_SOCKET',
+                7 => 'NET_SFTP_TYPE_CHAR_DEVICE',
+                8 => 'NET_SFTP_TYPE_BLOCK_DEVICE',
+                9 => 'NET_SFTP_TYPE_FIFO'
+            ];
+            self::define_array(
+                self::$packet_types,
+                self::$status_codes,
+                self::$attributes,
+                self::$open_flags,
+                self::$open_flags5,
+                self::$file_types
+            );
+        }
+
+        if (!defined('NET_SFTP_QUEUE_SIZE')) {
+            define('NET_SFTP_QUEUE_SIZE', 32);
+        }
+        if (!defined('NET_SFTP_UPLOAD_QUEUE_SIZE')) {
+            define('NET_SFTP_UPLOAD_QUEUE_SIZE', 1024);
+        }
+    }
+
+    /**
+     * Check a few things before SFTP functions are called
+     *
+     * @return bool
+     */
+    private function precheck()
+    {
+        if (!($this->bitmap & SSH2::MASK_LOGIN)) {
+            return false;
+        }
+
+        if ($this->pwd === false) {
+            return $this->init_sftp_connection();
+        }
+
+        return true;
+    }
+
+    /**
+     * Partially initialize an SFTP connection
+     *
+     * @throws \UnexpectedValueException on receipt of unexpected packets
+     * @return bool
+     */
+    private function partial_init_sftp_connection()
+    {
+        $response = $this->open_channel(self::CHANNEL, true);
+        if ($response === true && $this->isTimeout()) {
+            return false;
+        }
+
+        $packet = Strings::packSSH2(
+            'CNsbs',
+            NET_SSH2_MSG_CHANNEL_REQUEST,
+            $this->server_channels[self::CHANNEL],
+            'subsystem',
+            true,
+            'sftp'
+        );
+        $this->send_binary_packet($packet);
+
+        $this->channel_status[self::CHANNEL] = NET_SSH2_MSG_CHANNEL_REQUEST;
+
+        $response = $this->get_channel_packet(self::CHANNEL, true);
+        if ($response === false) {
+            // from PuTTY's psftp.exe
+            $command = "test -x /usr/lib/sftp-server && exec /usr/lib/sftp-server\n" .
+                       "test -x /usr/local/lib/sftp-server && exec /usr/local/lib/sftp-server\n" .
+                       "exec sftp-server";
+            // we don't do $this->exec($command, false) because exec() operates on a different channel and plus the SSH_MSG_CHANNEL_OPEN that exec() does
+            // is redundant
+            $packet = Strings::packSSH2(
+                'CNsCs',
+                NET_SSH2_MSG_CHANNEL_REQUEST,
+                $this->server_channels[self::CHANNEL],
+                'exec',
+                1,
+                $command
+            );
+            $this->send_binary_packet($packet);
+
+            $this->channel_status[self::CHANNEL] = NET_SSH2_MSG_CHANNEL_REQUEST;
+
+            $response = $this->get_channel_packet(self::CHANNEL, true);
+            if ($response === false) {
+                return false;
+            }
+        } elseif ($response === true && $this->isTimeout()) {
+            return false;
+        }
+
+        $this->channel_status[self::CHANNEL] = NET_SSH2_MSG_CHANNEL_DATA;
+        $this->send_sftp_packet(NET_SFTP_INIT, "\0\0\0\3");
+
+        $response = $this->get_sftp_packet();
+        if ($this->packet_type != NET_SFTP_VERSION) {
+            throw new \UnexpectedValueException('Expected NET_SFTP_VERSION. '
+                                              . 'Got packet type: ' . $this->packet_type);
+        }
+
+        $this->use_request_id = true;
+
+        list($this->defaultVersion) = Strings::unpackSSH2('N', $response);
+        while (!empty($response)) {
+            list($key, $value) = Strings::unpackSSH2('ss', $response);
+            $this->extensions[$key] = $value;
+        }
+
+        $this->partial_init = true;
+
+        return true;
+    }
+
+    /**
+     * (Re)initializes the SFTP channel
+     *
+     * @return bool
+     */
+    private function init_sftp_connection()
+    {
+        if (!$this->partial_init && !$this->partial_init_sftp_connection()) {
+            return false;
+        }
+
+        /*
+         A Note on SFTPv4/5/6 support:
+         <http://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#section-5.1> states the following:
+
+         "If the client wishes to interoperate with servers that support noncontiguous version
+          numbers it SHOULD send '3'"
+
+         Given that the server only sends its version number after the client has already done so, the above
+         seems to be suggesting that v3 should be the default version.  This makes sense given that v3 is the
+         most popular.
+
+         <http://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#section-5.5> states the following;
+
+         "If the server did not send the "versions" extension, or the version-from-list was not included, the
+          server MAY send a status response describing the failure, but MUST then close the channel without
+          processing any further requests."
+
+         So what do you do if you have a client whose initial SSH_FXP_INIT packet says it implements v3 and
+         a server whose initial SSH_FXP_VERSION reply says it implements v4 and only v4?  If it only implements
+         v4, the "versions" extension is likely not going to have been sent so version re-negotiation as discussed
+         in draft-ietf-secsh-filexfer-13 would be quite impossible.  As such, what \phpseclib3\Net\SFTP would do is close the
+         channel and reopen it with a new and updated SSH_FXP_INIT packet.
+        */
+        $this->version = $this->defaultVersion;
+        if (isset($this->extensions['versions']) && (!$this->preferredVersion || $this->preferredVersion != $this->version)) {
+            $versions = explode(',', $this->extensions['versions']);
+            $supported = [6, 5, 4];
+            if ($this->preferredVersion) {
+                $supported = array_diff($supported, [$this->preferredVersion]);
+                array_unshift($supported, $this->preferredVersion);
+            }
+            foreach ($supported as $ver) {
+                if (in_array($ver, $versions)) {
+                    if ($ver === $this->version) {
+                        break;
+                    }
+                    $this->version = (int) $ver;
+                    $packet = Strings::packSSH2('ss', 'version-select', "$ver");
+                    $this->send_sftp_packet(NET_SFTP_EXTENDED, $packet);
+                    $response = $this->get_sftp_packet();
+                    if ($this->packet_type != NET_SFTP_STATUS) {
+                        throw new \UnexpectedValueException('Expected NET_SFTP_STATUS. '
+                            . 'Got packet type: ' . $this->packet_type);
+                    }
+                    list($status) = Strings::unpackSSH2('N', $response);
+                    if ($status != NET_SFTP_STATUS_OK) {
+                        $this->logError($response, $status);
+                        throw new \UnexpectedValueException('Expected NET_SFTP_STATUS_OK. '
+                            . ' Got ' . $status);
+                    }
+                    break;
+                }
+            }
+        }
+
+        /*
+         SFTPv4+ defines a 'newline' extension.  SFTPv3 seems to have unofficial support for it via 'newline@vandyke.com',
+         however, I'm not sure what 'newline@vandyke.com' is supposed to do (the fact that it's unofficial means that it's
+         not in the official SFTPv3 specs) and 'newline@vandyke.com' / 'newline' are likely not drop-in substitutes for
+         one another due to the fact that 'newline' comes with a SSH_FXF_TEXT bitmask whereas it seems unlikely that
+         'newline@vandyke.com' would.
+        */
+        /*
+        if (isset($this->extensions['newline@vandyke.com'])) {
+            $this->extensions['newline'] = $this->extensions['newline@vandyke.com'];
+            unset($this->extensions['newline@vandyke.com']);
+        }
+        */
+        if ($this->version < 2 || $this->version > 6) {
+            return false;
+        }
+
+        $this->pwd = true;
+        try {
+            $this->pwd = $this->realpath('.');
+        } catch (\UnexpectedValueException $e) {
+            if (!$this->canonicalize_paths) {
+                throw $e;
+            }
+            $this->canonicalize_paths = false;
+            $this->reset_connection(NET_SSH2_DISCONNECT_CONNECTION_LOST);
+        }
+
+        $this->update_stat_cache($this->pwd, []);
+
+        return true;
+    }
+
+    /**
+     * Disable the stat cache
+     *
+     */
+    public function disableStatCache()
+    {
+        $this->use_stat_cache = false;
+    }
+
+    /**
+     * Enable the stat cache
+     *
+     */
+    public function enableStatCache()
+    {
+        $this->use_stat_cache = true;
+    }
+
+    /**
+     * Clear the stat cache
+     *
+     */
+    public function clearStatCache()
+    {
+        $this->stat_cache = [];
+    }
+
+    /**
+     * Enable path canonicalization
+     *
+     */
+    public function enablePathCanonicalization()
+    {
+        $this->canonicalize_paths = true;
+    }
+
+    /**
+     * Disable path canonicalization
+     *
+     * If this is enabled then $sftp->pwd() will not return the canonicalized absolute path
+     *
+     */
+    public function disablePathCanonicalization()
+    {
+        $this->canonicalize_paths = false;
+    }
+
+    /**
+     * Enable arbitrary length packets
+     *
+     */
+    public function enableArbitraryLengthPackets()
+    {
+        $this->allow_arbitrary_length_packets = true;
+    }
+
+    /**
+     * Disable arbitrary length packets
+     *
+     */
+    public function disableArbitraryLengthPackets()
+    {
+        $this->allow_arbitrary_length_packets = false;
+    }
+
+    /**
+     * Returns the current directory name
+     *
+     * @return string|bool
+     */
+    public function pwd()
+    {
+        if (!$this->precheck()) {
+            return false;
+        }
+
+        return $this->pwd;
+    }
+
+    /**
+     * Logs errors
+     *
+     * @param string $response
+     * @param int $status
+     */
+    private function logError($response, $status = -1)
+    {
+        if ($status == -1) {
+            list($status) = Strings::unpackSSH2('N', $response);
+        }
+
+        $error = self::$status_codes[$status];
+
+        if ($this->version > 2) {
+            list($message) = Strings::unpackSSH2('s', $response);
+            $this->sftp_errors[] = "$error: $message";
+        } else {
+            $this->sftp_errors[] = $error;
+        }
+    }
+
+    /**
+     * Canonicalize the Server-Side Path Name
+     *
+     * SFTP doesn't provide a mechanism by which the current working directory can be changed, so we'll emulate it.  Returns
+     * the absolute (canonicalized) path.
+     *
+     * If canonicalize_paths has been disabled using disablePathCanonicalization(), $path is returned as-is.
+     *
+     * @see self::chdir()
+     * @see self::disablePathCanonicalization()
+     * @param string $path
+     * @throws \UnexpectedValueException on receipt of unexpected packets
+     * @return mixed
+     */
+    public function realpath($path)
+    {
+        if ($this->precheck() === false) {
+            return false;
+        }
+
+        if (!$this->canonicalize_paths) {
+            if ($this->pwd === true) {
+                return '.';
+            }
+            if (!strlen($path) || $path[0] != '/') {
+                $path = $this->pwd . '/' . $path;
+            }
+            $parts = explode('/', $path);
+            $afterPWD = $beforePWD = [];
+            foreach ($parts as $part) {
+                switch ($part) {
+                    //case '': // some SFTP servers /require/ double /'s. see https://github.com/phpseclib/phpseclib/pull/1137
+                    case '.':
+                        break;
+                    case '..':
+                        if (!empty($afterPWD)) {
+                            array_pop($afterPWD);
+                        } else {
+                            $beforePWD[] = '..';
+                        }
+                        break;
+                    default:
+                        $afterPWD[] = $part;
+                }
+            }
+            $beforePWD = count($beforePWD) ? implode('/', $beforePWD) : '.';
+            return $beforePWD . '/' . implode('/', $afterPWD);
+        }
+
+        if ($this->pwd === true) {
+            // http://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#section-8.9
+            $this->send_sftp_packet(NET_SFTP_REALPATH, Strings::packSSH2('s', $path));
+
+            $response = $this->get_sftp_packet();
+            switch ($this->packet_type) {
+                case NET_SFTP_NAME:
+                    // although SSH_FXP_NAME is implemented differently in SFTPv3 than it is in SFTPv4+, the following
+                    // should work on all SFTP versions since the only part of the SSH_FXP_NAME packet the following looks
+                    // at is the first part and that part is defined the same in SFTP versions 3 through 6.
+                    list(, $filename) = Strings::unpackSSH2('Ns', $response);
+                    return $filename;
+                case NET_SFTP_STATUS:
+                    $this->logError($response);
+                    return false;
+                default:
+                    throw new \UnexpectedValueException('Expected NET_SFTP_NAME or NET_SFTP_STATUS. '
+                                                      . 'Got packet type: ' . $this->packet_type);
+            }
+        }
+
+        if (!strlen($path) || $path[0] != '/') {
+            $path = $this->pwd . '/' . $path;
+        }
+
+        $path = explode('/', $path);
+        $new = [];
+        foreach ($path as $dir) {
+            if (!strlen($dir)) {
+                continue;
+            }
+            switch ($dir) {
+                case '..':
+                    array_pop($new);
+                    // fall-through
+                case '.':
+                    break;
+                default:
+                    $new[] = $dir;
+            }
+        }
+
+        return '/' . implode('/', $new);
+    }
+
+    /**
+     * Changes the current directory
+     *
+     * @param string $dir
+     * @throws \UnexpectedValueException on receipt of unexpected packets
+     * @return bool
+     */
+    public function chdir($dir)
+    {
+        if (!$this->precheck()) {
+            return false;
+        }
+
+        // assume current dir if $dir is empty
+        if ($dir === '') {
+            $dir = './';
+        // suffix a slash if needed
+        } elseif ($dir[strlen($dir) - 1] != '/') {
+            $dir .= '/';
+        }
+
+        $dir = $this->realpath($dir);
+
+        // confirm that $dir is, in fact, a valid directory
+        if ($this->use_stat_cache && is_array($this->query_stat_cache($dir))) {
+            $this->pwd = $dir;
+            return true;
+        }
+
+        // we could do a stat on the alleged $dir to see if it's a directory but that doesn't tell us
+        // the currently logged in user has the appropriate permissions or not. maybe you could see if
+        // the file's uid / gid match the currently logged in user's uid / gid but how there's no easy
+        // way to get those with SFTP
+
+        $this->send_sftp_packet(NET_SFTP_OPENDIR, Strings::packSSH2('s', $dir));
+
+        // see \phpseclib3\Net\SFTP::nlist() for a more thorough explanation of the following
+        $response = $this->get_sftp_packet();
+        switch ($this->packet_type) {
+            case NET_SFTP_HANDLE:
+                $handle = substr($response, 4);
+                break;
+            case NET_SFTP_STATUS:
+                $this->logError($response);
+                return false;
+            default:
+                throw new \UnexpectedValueException('Expected NET_SFTP_HANDLE or NET_SFTP_STATUS' .
+                                                    'Got packet type: ' . $this->packet_type);
+        }
+
+        if (!$this->close_handle($handle)) {
+            return false;
+        }
+
+        $this->update_stat_cache($dir, []);
+
+        $this->pwd = $dir;
+        return true;
+    }
+
+    /**
+     * Returns a list of files in the given directory
+     *
+     * @param string $dir
+     * @param bool $recursive
+     * @return array|false
+     */
+    public function nlist($dir = '.', $recursive = false)
+    {
+        return $this->nlist_helper($dir, $recursive, '');
+    }
+
+    /**
+     * Helper method for nlist
+     *
+     * @param string $dir
+     * @param bool $recursive
+     * @param string $relativeDir
+     * @return array|false
+     */
+    private function nlist_helper($dir, $recursive, $relativeDir)
+    {
+        $files = $this->readlist($dir, false);
+
+        // If we get an int back, then that is an "unexpected" status.
+        // We do not have a file list, so return false.
+        if (is_int($files)) {
+            return false;
+        }
+
+        if (!$recursive || $files === false) {
+            return $files;
+        }
+
+        $result = [];
+        foreach ($files as $value) {
+            if ($value == '.' || $value == '..') {
+                $result[] = $relativeDir . $value;
+                continue;
+            }
+            if (is_array($this->query_stat_cache($this->realpath($dir . '/' . $value)))) {
+                $temp = $this->nlist_helper($dir . '/' . $value, true, $relativeDir . $value . '/');
+                $temp = is_array($temp) ? $temp : [];
+                $result = array_merge($result, $temp);
+            } else {
+                $result[] = $relativeDir . $value;
+            }
+        }
+
+        return $result;
+    }
+
+    /**
+     * Returns a detailed list of files in the given directory
+     *
+     * @param string $dir
+     * @param bool $recursive
+     * @return array|false
+     */
+    public function rawlist($dir = '.', $recursive = false)
+    {
+        $files = $this->readlist($dir, true);
+
+        // If we get an int back, then that is an "unexpected" status.
+        // We do not have a file list, so return false.
+        if (is_int($files)) {
+            return false;
+        }
+
+        if (!$recursive || $files === false) {
+            return $files;
+        }
+
+        static $depth = 0;
+
+        foreach ($files as $key => $value) {
+            if ($depth != 0 && $key == '..') {
+                unset($files[$key]);
+                continue;
+            }
+            $is_directory = false;
+            if ($key != '.' && $key != '..') {
+                if ($this->use_stat_cache) {
+                    $is_directory = is_array($this->query_stat_cache($this->realpath($dir . '/' . $key)));
+                } else {
+                    $stat = $this->lstat($dir . '/' . $key);
+                    $is_directory = $stat && $stat['type'] === NET_SFTP_TYPE_DIRECTORY;
+                }
+            }
+
+            if ($is_directory) {
+                $depth++;
+                $files[$key] = $this->rawlist($dir . '/' . $key, true);
+                $depth--;
+            } else {
+                $files[$key] = (object) $value;
+            }
+        }
+
+        return $files;
+    }
+
+    /**
+     * Reads a list, be it detailed or not, of files in the given directory
+     *
+     * @param string $dir
+     * @param bool $raw
+     * @return array|false
+     * @throws \UnexpectedValueException on receipt of unexpected packets
+     */
+    private function readlist($dir, $raw = true)
+    {
+        if (!$this->precheck()) {
+            return false;
+        }
+
+        $dir = $this->realpath($dir . '/');
+        if ($dir === false) {
+            return false;
+        }
+
+        // http://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#section-8.1.2
+        $this->send_sftp_packet(NET_SFTP_OPENDIR, Strings::packSSH2('s', $dir));
+
+        $response = $this->get_sftp_packet();
+        switch ($this->packet_type) {
+            case NET_SFTP_HANDLE:
+                // http://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#section-9.2
+                // since 'handle' is the last field in the SSH_FXP_HANDLE packet, we'll just remove the first four bytes that
+                // represent the length of the string and leave it at that
+                $handle = substr($response, 4);
+                break;
+            case NET_SFTP_STATUS:
+                // presumably SSH_FX_NO_SUCH_FILE or SSH_FX_PERMISSION_DENIED
+                list($status) = Strings::unpackSSH2('N', $response);
+                $this->logError($response, $status);
+                return $status;
+            default:
+                throw new \UnexpectedValueException('Expected NET_SFTP_HANDLE or NET_SFTP_STATUS. '
+                                                  . 'Got packet type: ' . $this->packet_type);
+        }
+
+        $this->update_stat_cache($dir, []);
+
+        $contents = [];
+        while (true) {
+            // http://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#section-8.2.2
+            // why multiple SSH_FXP_READDIR packets would be sent when the response to a single one can span arbitrarily many
+            // SSH_MSG_CHANNEL_DATA messages is not known to me.
+            $this->send_sftp_packet(NET_SFTP_READDIR, Strings::packSSH2('s', $handle));
+
+            $response = $this->get_sftp_packet();
+            switch ($this->packet_type) {
+                case NET_SFTP_NAME:
+                    list($count) = Strings::unpackSSH2('N', $response);
+                    for ($i = 0; $i < $count; $i++) {
+                        list($shortname) = Strings::unpackSSH2('s', $response);
+                        // SFTPv4 "removed the long filename from the names structure-- it can now be
+                        //         built from information available in the attrs structure."
+                        if ($this->version < 4) {
+                            list($longname) = Strings::unpackSSH2('s', $response);
+                        }
+                        $attributes = $this->parseAttributes($response);
+                        if (!isset($attributes['type']) && $this->version < 4) {
+                            $fileType = $this->parseLongname($longname);
+                            if ($fileType) {
+                                $attributes['type'] = $fileType;
+                            }
+                        }
+                        $contents[$shortname] = $attributes + ['filename' => $shortname];
+
+                        if (isset($attributes['type']) && $attributes['type'] == NET_SFTP_TYPE_DIRECTORY && ($shortname != '.' && $shortname != '..')) {
+                            $this->update_stat_cache($dir . '/' . $shortname, []);
+                        } else {
+                            if ($shortname == '..') {
+                                $temp = $this->realpath($dir . '/..') . '/.';
+                            } else {
+                                $temp = $dir . '/' . $shortname;
+                            }
+                            $this->update_stat_cache($temp, (object) ['lstat' => $attributes]);
+                        }
+                        // SFTPv6 has an optional boolean end-of-list field, but we'll ignore that, since the
+                        // final SSH_FXP_STATUS packet should tell us that, already.
+                    }
+                    break;
+                case NET_SFTP_STATUS:
+                    list($status) = Strings::unpackSSH2('N', $response);
+                    if ($status != NET_SFTP_STATUS_EOF) {
+                        $this->logError($response, $status);
+                        return $status;
+                    }
+                    break 2;
+                default:
+                    throw new \UnexpectedValueException('Expected NET_SFTP_NAME or NET_SFTP_STATUS. '
+                                                      . 'Got packet type: ' . $this->packet_type);
+            }
+        }
+
+        if (!$this->close_handle($handle)) {
+            return false;
+        }
+
+        if (count($this->sortOptions)) {
+            uasort($contents, [&$this, 'comparator']);
+        }
+
+        return $raw ? $contents : array_map('strval', array_keys($contents));
+    }
+
+    /**
+     * Compares two rawlist entries using parameters set by setListOrder()
+     *
+     * Intended for use with uasort()
+     *
+     * @param array $a
+     * @param array $b
+     * @return int
+     */
+    private function comparator(array $a, array $b)
+    {
+        switch (true) {
+            case $a['filename'] === '.' || $b['filename'] === '.':
+                if ($a['filename'] === $b['filename']) {
+                    return 0;
+                }
+                return $a['filename'] === '.' ? -1 : 1;
+            case $a['filename'] === '..' || $b['filename'] === '..':
+                if ($a['filename'] === $b['filename']) {
+                    return 0;
+                }
+                return $a['filename'] === '..' ? -1 : 1;
+            case isset($a['type']) && $a['type'] === NET_SFTP_TYPE_DIRECTORY:
+                if (!isset($b['type'])) {
+                    return 1;
+                }
+                if ($b['type'] !== $a['type']) {
+                    return -1;
+                }
+                break;
+            case isset($b['type']) && $b['type'] === NET_SFTP_TYPE_DIRECTORY:
+                return 1;
+        }
+        foreach ($this->sortOptions as $sort => $order) {
+            if (!isset($a[$sort]) || !isset($b[$sort])) {
+                if (isset($a[$sort])) {
+                    return -1;
+                }
+                if (isset($b[$sort])) {
+                    return 1;
+                }
+                return 0;
+            }
+            switch ($sort) {
+                case 'filename':
+                    $result = strcasecmp($a['filename'], $b['filename']);
+                    if ($result) {
+                        return $order === SORT_DESC ? -$result : $result;
+                    }
+                    break;
+                case 'mode':
+                    $a[$sort] &= 07777;
+                    $b[$sort] &= 07777;
+                    // fall-through
+                default:
+                    if ($a[$sort] === $b[$sort]) {
+                        break;
+                    }
+                    return $order === SORT_ASC ? $a[$sort] - $b[$sort] : $b[$sort] - $a[$sort];
+            }
+        }
+    }
+
+    /**
+     * Defines how nlist() and rawlist() will be sorted - if at all.
+     *
+     * If sorting is enabled directories and files will be sorted independently with
+     * directories appearing before files in the resultant array that is returned.
+     *
+     * Any parameter returned by stat is a valid sort parameter for this function.
+     * Filename comparisons are case insensitive.
+     *
+     * Examples:
+     *
+     * $sftp->setListOrder('filename', SORT_ASC);
+     * $sftp->setListOrder('size', SORT_DESC, 'filename', SORT_ASC);
+     * $sftp->setListOrder(true);
+     *    Separates directories from files but doesn't do any sorting beyond that
+     * $sftp->setListOrder();
+     *    Don't do any sort of sorting
+     *
+     * @param string ...$args
+     */
+    public function setListOrder(...$args)
+    {
+        $this->sortOptions = [];
+        if (empty($args)) {
+            return;
+        }
+        $len = count($args) & 0x7FFFFFFE;
+        for ($i = 0; $i < $len; $i += 2) {
+            $this->sortOptions[$args[$i]] = $args[$i + 1];
+        }
+        if (!count($this->sortOptions)) {
+            $this->sortOptions = ['bogus' => true];
+        }
+    }
+
+    /**
+     * Save files / directories to cache
+     *
+     * @param string $path
+     * @param mixed $value
+     */
+    private function update_stat_cache($path, $value)
+    {
+        if ($this->use_stat_cache === false) {
+            return;
+        }
+
+        // preg_replace('#^/|/(?=/)|/$#', '', $dir) == str_replace('//', '/', trim($path, '/'))
+        $dirs = explode('/', preg_replace('#^/|/(?=/)|/$#', '', $path));
+
+        $temp = &$this->stat_cache;
+        $max = count($dirs) - 1;
+        foreach ($dirs as $i => $dir) {
+            // if $temp is an object that means one of two things.
+            //  1. a file was deleted and changed to a directory behind phpseclib's back
+            //  2. it's a symlink. when lstat is done it's unclear what it's a symlink to
+            if (is_object($temp)) {
+                $temp = [];
+            }
+            if (!isset($temp[$dir])) {
+                $temp[$dir] = [];
+            }
+            if ($i === $max) {
+                if (is_object($temp[$dir]) && is_object($value)) {
+                    if (!isset($value->stat) && isset($temp[$dir]->stat)) {
+                        $value->stat = $temp[$dir]->stat;
+                    }
+                    if (!isset($value->lstat) && isset($temp[$dir]->lstat)) {
+                        $value->lstat = $temp[$dir]->lstat;
+                    }
+                }
+                $temp[$dir] = $value;
+                break;
+            }
+            $temp = &$temp[$dir];
+        }
+    }
+
+    /**
+     * Remove files / directories from cache
+     *
+     * @param string $path
+     * @return bool
+     */
+    private function remove_from_stat_cache($path)
+    {
+        $dirs = explode('/', preg_replace('#^/|/(?=/)|/$#', '', $path));
+
+        $temp = &$this->stat_cache;
+        $max = count($dirs) - 1;
+        foreach ($dirs as $i => $dir) {
+            if (!is_array($temp)) {
+                return false;
+            }
+            if ($i === $max) {
+                unset($temp[$dir]);
+                return true;
+            }
+            if (!isset($temp[$dir])) {
+                return false;
+            }
+            $temp = &$temp[$dir];
+        }
+    }
+
+    /**
+     * Checks cache for path
+     *
+     * Mainly used by file_exists
+     *
+     * @param string $path
+     * @return mixed
+     */
+    private function query_stat_cache($path)
+    {
+        $dirs = explode('/', preg_replace('#^/|/(?=/)|/$#', '', $path));
+
+        $temp = &$this->stat_cache;
+        foreach ($dirs as $dir) {
+            if (!is_array($temp)) {
+                return null;
+            }
+            if (!isset($temp[$dir])) {
+                return null;
+            }
+            $temp = &$temp[$dir];
+        }
+        return $temp;
+    }
+
+    /**
+     * Returns general information about a file.
+     *
+     * Returns an array on success and false otherwise.
+     *
+     * @param string $filename
+     * @return array|false
+     */
+    public function stat($filename)
+    {
+        if (!$this->precheck()) {
+            return false;
+        }
+
+        $filename = $this->realpath($filename);
+        if ($filename === false) {
+            return false;
+        }
+
+        if ($this->use_stat_cache) {
+            $result = $this->query_stat_cache($filename);
+            if (is_array($result) && isset($result['.']) && isset($result['.']->stat)) {
+                return $result['.']->stat;
+            }
+            if (is_object($result) && isset($result->stat)) {
+                return $result->stat;
+            }
+        }
+
+        $stat = $this->stat_helper($filename, NET_SFTP_STAT);
+        if ($stat === false) {
+            $this->remove_from_stat_cache($filename);
+            return false;
+        }
+        if (isset($stat['type'])) {
+            if ($stat['type'] == NET_SFTP_TYPE_DIRECTORY) {
+                $filename .= '/.';
+            }
+            $this->update_stat_cache($filename, (object) ['stat' => $stat]);
+            return $stat;
+        }
+
+        $pwd = $this->pwd;
+        $stat['type'] = $this->chdir($filename) ?
+            NET_SFTP_TYPE_DIRECTORY :
+            NET_SFTP_TYPE_REGULAR;
+        $this->pwd = $pwd;
+
+        if ($stat['type'] == NET_SFTP_TYPE_DIRECTORY) {
+            $filename .= '/.';
+        }
+        $this->update_stat_cache($filename, (object) ['stat' => $stat]);
+
+        return $stat;
+    }
+
+    /**
+     * Returns general information about a file or symbolic link.
+     *
+     * Returns an array on success and false otherwise.
+     *
+     * @param string $filename
+     * @return array|false
+     */
+    public function lstat($filename)
+    {
+        if (!$this->precheck()) {
+            return false;
+        }
+
+        $filename = $this->realpath($filename);
+        if ($filename === false) {
+            return false;
+        }
+
+        if ($this->use_stat_cache) {
+            $result = $this->query_stat_cache($filename);
+            if (is_array($result) && isset($result['.']) && isset($result['.']->lstat)) {
+                return $result['.']->lstat;
+            }
+            if (is_object($result) && isset($result->lstat)) {
+                return $result->lstat;
+            }
+        }
+
+        $lstat = $this->stat_helper($filename, NET_SFTP_LSTAT);
+        if ($lstat === false) {
+            $this->remove_from_stat_cache($filename);
+            return false;
+        }
+        if (isset($lstat['type'])) {
+            if ($lstat['type'] == NET_SFTP_TYPE_DIRECTORY) {
+                $filename .= '/.';
+            }
+            $this->update_stat_cache($filename, (object) ['lstat' => $lstat]);
+            return $lstat;
+        }
+
+        $stat = $this->stat_helper($filename, NET_SFTP_STAT);
+
+        if ($lstat != $stat) {
+            $lstat = array_merge($lstat, ['type' => NET_SFTP_TYPE_SYMLINK]);
+            $this->update_stat_cache($filename, (object) ['lstat' => $lstat]);
+            return $stat;
+        }
+
+        $pwd = $this->pwd;
+        $lstat['type'] = $this->chdir($filename) ?
+            NET_SFTP_TYPE_DIRECTORY :
+            NET_SFTP_TYPE_REGULAR;
+        $this->pwd = $pwd;
+
+        if ($lstat['type'] == NET_SFTP_TYPE_DIRECTORY) {
+            $filename .= '/.';
+        }
+        $this->update_stat_cache($filename, (object) ['lstat' => $lstat]);
+
+        return $lstat;
+    }
+
+    /**
+     * Returns general information about a file or symbolic link
+     *
+     * Determines information without calling \phpseclib3\Net\SFTP::realpath().
+     * The second parameter can be either NET_SFTP_STAT or NET_SFTP_LSTAT.
+     *
+     * @param string $filename
+     * @param int $type
+     * @throws \UnexpectedValueException on receipt of unexpected packets
+     * @return array|false
+     */
+    private function stat_helper($filename, $type)
+    {
+        // SFTPv4+ adds an additional 32-bit integer field - flags - to the following:
+        $packet = Strings::packSSH2('s', $filename);
+        $this->send_sftp_packet($type, $packet);
+
+        $response = $this->get_sftp_packet();
+        switch ($this->packet_type) {
+            case NET_SFTP_ATTRS:
+                return $this->parseAttributes($response);
+            case NET_SFTP_STATUS:
+                $this->logError($response);
+                return false;
+        }
+
+        throw new \UnexpectedValueException('Expected NET_SFTP_ATTRS or NET_SFTP_STATUS. '
+                                          . 'Got packet type: ' . $this->packet_type);
+    }
+
+    /**
+     * Truncates a file to a given length
+     *
+     * @param string $filename
+     * @param int $new_size
+     * @return bool
+     */
+    public function truncate($filename, $new_size)
+    {
+        $attr = Strings::packSSH2('NQ', NET_SFTP_ATTR_SIZE, $new_size);
+
+        return $this->setstat($filename, $attr, false);
+    }
+
+    /**
+     * Sets access and modification time of file.
+     *
+     * If the file does not exist, it will be created.
+     *
+     * @param string $filename
+     * @param int $time
+     * @param int $atime
+     * @throws \UnexpectedValueException on receipt of unexpected packets
+     * @return bool
+     */
+    public function touch($filename, $time = null, $atime = null)
+    {
+        if (!$this->precheck()) {
+            return false;
+        }
+
+        $filename = $this->realpath($filename);
+        if ($filename === false) {
+            return false;
+        }
+
+        if (!isset($time)) {
+            $time = time();
+        }
+        if (!isset($atime)) {
+            $atime = $time;
+        }
+
+        $attr = $this->version < 4 ?
+            pack('N3', NET_SFTP_ATTR_ACCESSTIME, $atime, $time) :
+            Strings::packSSH2('NQ2', NET_SFTP_ATTR_ACCESSTIME | NET_SFTP_ATTR_MODIFYTIME, $atime, $time);
+
+        $packet = Strings::packSSH2('s', $filename);
+        $packet .= $this->version >= 5 ?
+            pack('N2', 0, NET_SFTP_OPEN_OPEN_EXISTING) :
+            pack('N', NET_SFTP_OPEN_WRITE | NET_SFTP_OPEN_CREATE | NET_SFTP_OPEN_EXCL);
+        $packet .= $attr;
+
+        $this->send_sftp_packet(NET_SFTP_OPEN, $packet);
+
+        $response = $this->get_sftp_packet();
+        switch ($this->packet_type) {
+            case NET_SFTP_HANDLE:
+                return $this->close_handle(substr($response, 4));
+            case NET_SFTP_STATUS:
+                $this->logError($response);
+                break;
+            default:
+                throw new \UnexpectedValueException('Expected NET_SFTP_HANDLE or NET_SFTP_STATUS. '
+                                                  . 'Got packet type: ' . $this->packet_type);
+        }
+
+        return $this->setstat($filename, $attr, false);
+    }
+
+    /**
+     * Changes file or directory owner
+     *
+     * $uid should be an int for SFTPv3 and a string for SFTPv4+. Ideally the string
+     * would be of the form "user@dns_domain" but it does not need to be.
+     * `$sftp->getSupportedVersions()['version']` will return the specific version
+     * that's being used.
+     *
+     * Returns true on success or false on error.
+     *
+     * @param string $filename
+     * @param int|string $uid
+     * @param bool $recursive
+     * @return bool
+     */
+    public function chown($filename, $uid, $recursive = false)
+    {
+        /*
+         quoting <https://datatracker.ietf.org/doc/html/draft-ietf-secsh-filexfer-13#section-7.5>,
+
+         "To avoid a representation that is tied to a particular underlying
+          implementation at the client or server, the use of UTF-8 strings has
+          been chosen.  The string should be of the form "user@dns_domain".
+          This will allow for a client and server that do not use the same
+          local representation the ability to translate to a common syntax that
+          can be interpreted by both.  In the case where there is no
+          translation available to the client or server, the attribute value
+          must be constructed without the "@"."
+
+         phpseclib _could_ auto append the dns_domain to $uid BUT what if it shouldn't
+         have one? phpseclib would have no way of knowing so rather than guess phpseclib
+         will just use whatever value the user provided
+       */
+
+        $attr = $this->version < 4 ?
+            // quoting <http://www.kernel.org/doc/man-pages/online/pages/man2/chown.2.html>,
+            // "if the owner or group is specified as -1, then that ID is not changed"
+            pack('N3', NET_SFTP_ATTR_UIDGID, $uid, -1) :
+            // quoting <https://datatracker.ietf.org/doc/html/draft-ietf-secsh-filexfer-13#section-7.5>,
+            // "If either the owner or group field is zero length, the field should be
+            //  considered absent, and no change should be made to that specific field
+            //  during a modification operation"
+            Strings::packSSH2('Nss', NET_SFTP_ATTR_OWNERGROUP, $uid, '');
+
+        return $this->setstat($filename, $attr, $recursive);
+    }
+
+    /**
+     * Changes file or directory group
+     *
+     * $gid should be an int for SFTPv3 and a string for SFTPv4+. Ideally the string
+     * would be of the form "user@dns_domain" but it does not need to be.
+     * `$sftp->getSupportedVersions()['version']` will return the specific version
+     * that's being used.
+     *
+     * Returns true on success or false on error.
+     *
+     * @param string $filename
+     * @param int|string $gid
+     * @param bool $recursive
+     * @return bool
+     */
+    public function chgrp($filename, $gid, $recursive = false)
+    {
+        $attr = $this->version < 4 ?
+            pack('N3', NET_SFTP_ATTR_UIDGID, -1, $gid) :
+            Strings::packSSH2('Nss', NET_SFTP_ATTR_OWNERGROUP, '', $gid);
+
+        return $this->setstat($filename, $attr, $recursive);
+    }
+
+    /**
+     * Set permissions on a file.
+     *
+     * Returns the new file permissions on success or false on error.
+     * If $recursive is true than this just returns true or false.
+     *
+     * @param int $mode
+     * @param string $filename
+     * @param bool $recursive
+     * @throws \UnexpectedValueException on receipt of unexpected packets
+     * @return mixed
+     */
+    public function chmod($mode, $filename, $recursive = false)
+    {
+        if (is_string($mode) && is_int($filename)) {
+            $temp = $mode;
+            $mode = $filename;
+            $filename = $temp;
+        }
+
+        $attr = pack('N2', NET_SFTP_ATTR_PERMISSIONS, $mode & 07777);
+        if (!$this->setstat($filename, $attr, $recursive)) {
+            return false;
+        }
+        if ($recursive) {
+            return true;
+        }
+
+        $filename = $this->realpath($filename);
+        // rather than return what the permissions *should* be, we'll return what they actually are.  this will also
+        // tell us if the file actually exists.
+        // incidentally, SFTPv4+ adds an additional 32-bit integer field - flags - to the following:
+        $packet = pack('Na*', strlen($filename), $filename);
+        $this->send_sftp_packet(NET_SFTP_STAT, $packet);
+
+        $response = $this->get_sftp_packet();
+        switch ($this->packet_type) {
+            case NET_SFTP_ATTRS:
+                $attrs = $this->parseAttributes($response);
+                return $attrs['mode'];
+            case NET_SFTP_STATUS:
+                $this->logError($response);
+                return false;
+        }
+
+        throw new \UnexpectedValueException('Expected NET_SFTP_ATTRS or NET_SFTP_STATUS. '
+                                          . 'Got packet type: ' . $this->packet_type);
+    }
+
+    /**
+     * Sets information about a file
+     *
+     * @param string $filename
+     * @param string $attr
+     * @param bool $recursive
+     * @throws \UnexpectedValueException on receipt of unexpected packets
+     * @return bool
+     */
+    private function setstat($filename, $attr, $recursive)
+    {
+        if (!$this->precheck()) {
+            return false;
+        }
+
+        $filename = $this->realpath($filename);
+        if ($filename === false) {
+            return false;
+        }
+
+        $this->remove_from_stat_cache($filename);
+
+        if ($recursive) {
+            $i = 0;
+            $result = $this->setstat_recursive($filename, $attr, $i);
+            $this->read_put_responses($i);
+            return $result;
+        }
+
+        $packet = Strings::packSSH2('s', $filename);
+        $packet .= $this->version >= 4 ?
+            pack('a*Ca*', substr($attr, 0, 4), NET_SFTP_TYPE_UNKNOWN, substr($attr, 4)) :
+            $attr;
+        $this->send_sftp_packet(NET_SFTP_SETSTAT, $packet);
+
+        /*
+         "Because some systems must use separate system calls to set various attributes, it is possible that a failure
+          response will be returned, but yet some of the attributes may be have been successfully modified.  If possible,
+          servers SHOULD avoid this situation; however, clients MUST be aware that this is possible."
+
+          -- http://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#section-8.6
+        */
+        $response = $this->get_sftp_packet();
+        if ($this->packet_type != NET_SFTP_STATUS) {
+            throw new \UnexpectedValueException('Expected NET_SFTP_STATUS. '
+                                              . 'Got packet type: ' . $this->packet_type);
+        }
+
+        list($status) = Strings::unpackSSH2('N', $response);
+        if ($status != NET_SFTP_STATUS_OK) {
+            $this->logError($response, $status);
+            return false;
+        }
+
+        return true;
+    }
+
+    /**
+     * Recursively sets information on directories on the SFTP server
+     *
+     * Minimizes directory lookups and SSH_FXP_STATUS requests for speed.
+     *
+     * @param string $path
+     * @param string $attr
+     * @param int $i
+     * @return bool
+     */
+    private function setstat_recursive($path, $attr, &$i)
+    {
+        if (!$this->read_put_responses($i)) {
+            return false;
+        }
+        $i = 0;
+        $entries = $this->readlist($path, true);
+
+        if ($entries === false || is_int($entries)) {
+            return $this->setstat($path, $attr, false);
+        }
+
+        // normally $entries would have at least . and .. but it might not if the directories
+        // permissions didn't allow reading
+        if (empty($entries)) {
+            return false;
+        }
+
+        unset($entries['.'], $entries['..']);
+        foreach ($entries as $filename => $props) {
+            if (!isset($props['type'])) {
+                return false;
+            }
+
+            $temp = $path . '/' . $filename;
+            if ($props['type'] == NET_SFTP_TYPE_DIRECTORY) {
+                if (!$this->setstat_recursive($temp, $attr, $i)) {
+                    return false;
+                }
+            } else {
+                $packet = Strings::packSSH2('s', $temp);
+                $packet .= $this->version >= 4 ?
+                    pack('Ca*', NET_SFTP_TYPE_UNKNOWN, $attr) :
+                    $attr;
+                $this->send_sftp_packet(NET_SFTP_SETSTAT, $packet);
+
+                $i++;
+
+                if ($i >= NET_SFTP_QUEUE_SIZE) {
+                    if (!$this->read_put_responses($i)) {
+                        return false;
+                    }
+                    $i = 0;
+                }
+            }
+        }
+
+        $packet = Strings::packSSH2('s', $path);
+        $packet .= $this->version >= 4 ?
+            pack('Ca*', NET_SFTP_TYPE_UNKNOWN, $attr) :
+            $attr;
+        $this->send_sftp_packet(NET_SFTP_SETSTAT, $packet);
+
+        $i++;
+
+        if ($i >= NET_SFTP_QUEUE_SIZE) {
+            if (!$this->read_put_responses($i)) {
+                return false;
+            }
+            $i = 0;
+        }
+
+        return true;
+    }
+
+    /**
+     * Return the target of a symbolic link
+     *
+     * @param string $link
+     * @throws \UnexpectedValueException on receipt of unexpected packets
+     * @return mixed
+     */
+    public function readlink($link)
+    {
+        if (!$this->precheck()) {
+            return false;
+        }
+
+        $link = $this->realpath($link);
+
+        $this->send_sftp_packet(NET_SFTP_READLINK, Strings::packSSH2('s', $link));
+
+        $response = $this->get_sftp_packet();
+        switch ($this->packet_type) {
+            case NET_SFTP_NAME:
+                break;
+            case NET_SFTP_STATUS:
+                $this->logError($response);
+                return false;
+            default:
+                throw new \UnexpectedValueException('Expected NET_SFTP_NAME or NET_SFTP_STATUS. '
+                                                  . 'Got packet type: ' . $this->packet_type);
+        }
+
+        list($count) = Strings::unpackSSH2('N', $response);
+        // the file isn't a symlink
+        if (!$count) {
+            return false;
+        }
+
+        list($filename) = Strings::unpackSSH2('s', $response);
+
+        return $filename;
+    }
+
+    /**
+     * Create a symlink
+     *
+     * symlink() creates a symbolic link to the existing target with the specified name link.
+     *
+     * @param string $target
+     * @param string $link
+     * @throws \UnexpectedValueException on receipt of unexpected packets
+     * @return bool
+     */
+    public function symlink($target, $link)
+    {
+        if (!$this->precheck()) {
+            return false;
+        }
+
+        //$target = $this->realpath($target);
+        $link = $this->realpath($link);
+
+        /* quoting https://datatracker.ietf.org/doc/html/draft-ietf-secsh-filexfer-09#section-12.1 :
+
+           Changed the SYMLINK packet to be LINK and give it the ability to
+           create hard links.  Also change it's packet number because many
+           implementation implemented SYMLINK with the arguments reversed.
+           Hopefully the new argument names make it clear which way is which.
+        */
+        if ($this->version == 6) {
+            $type = NET_SFTP_LINK;
+            $packet = Strings::packSSH2('ssC', $link, $target, 1);
+        } else {
+            $type = NET_SFTP_SYMLINK;
+            /* quoting http://bxr.su/OpenBSD/usr.bin/ssh/PROTOCOL#347 :
+
+               3.1. sftp: Reversal of arguments to SSH_FXP_SYMLINK
+
+               When OpenSSH's sftp-server was implemented, the order of the arguments
+               to the SSH_FXP_SYMLINK method was inadvertently reversed. Unfortunately,
+               the reversal was not noticed until the server was widely deployed. Since
+               fixing this to follow the specification would cause incompatibility, the
+               current order was retained. For correct operation, clients should send
+               SSH_FXP_SYMLINK as follows:
+
+                   uint32      id
+                   string      targetpath
+                   string      linkpath */
+            $packet = substr($this->server_identifier, 0, 15) == 'SSH-2.0-OpenSSH' ?
+                Strings::packSSH2('ss', $target, $link) :
+                Strings::packSSH2('ss', $link, $target);
+        }
+        $this->send_sftp_packet($type, $packet);
+
+        $response = $this->get_sftp_packet();
+        if ($this->packet_type != NET_SFTP_STATUS) {
+            throw new \UnexpectedValueException('Expected NET_SFTP_STATUS. '
+                                              . 'Got packet type: ' . $this->packet_type);
+        }
+
+        list($status) = Strings::unpackSSH2('N', $response);
+        if ($status != NET_SFTP_STATUS_OK) {
+            $this->logError($response, $status);
+            return false;
+        }
+
+        return true;
+    }
+
+    /**
+     * Creates a directory.
+     *
+     * @param string $dir
+     * @param int $mode
+     * @param bool $recursive
+     * @return bool
+     */
+    public function mkdir($dir, $mode = -1, $recursive = false)
+    {
+        if (!$this->precheck()) {
+            return false;
+        }
+
+        $dir = $this->realpath($dir);
+
+        if ($recursive) {
+            $dirs = explode('/', preg_replace('#/(?=/)|/$#', '', $dir));
+            if (empty($dirs[0])) {
+                array_shift($dirs);
+                $dirs[0] = '/' . $dirs[0];
+            }
+            for ($i = 0; $i < count($dirs); $i++) {
+                $temp = array_slice($dirs, 0, $i + 1);
+                $temp = implode('/', $temp);
+                $result = $this->mkdir_helper($temp, $mode);
+            }
+            return $result;
+        }
+
+        return $this->mkdir_helper($dir, $mode);
+    }
+
+    /**
+     * Helper function for directory creation
+     *
+     * @param string $dir
+     * @param int $mode
+     * @return bool
+     */
+    private function mkdir_helper($dir, $mode)
+    {
+        // send SSH_FXP_MKDIR without any attributes (that's what the \0\0\0\0 is doing)
+        $this->send_sftp_packet(NET_SFTP_MKDIR, Strings::packSSH2('s', $dir) . "\0\0\0\0");
+
+        $response = $this->get_sftp_packet();
+        if ($this->packet_type != NET_SFTP_STATUS) {
+            throw new \UnexpectedValueException('Expected NET_SFTP_STATUS. '
+                                              . 'Got packet type: ' . $this->packet_type);
+        }
+
+        list($status) = Strings::unpackSSH2('N', $response);
+        if ($status != NET_SFTP_STATUS_OK) {
+            $this->logError($response, $status);
+            return false;
+        }
+
+        if ($mode !== -1) {
+            $this->chmod($mode, $dir);
+        }
+
+        return true;
+    }
+
+    /**
+     * Removes a directory.
+     *
+     * @param string $dir
+     * @throws \UnexpectedValueException on receipt of unexpected packets
+     * @return bool
+     */
+    public function rmdir($dir)
+    {
+        if (!$this->precheck()) {
+            return false;
+        }
+
+        $dir = $this->realpath($dir);
+        if ($dir === false) {
+            return false;
+        }
+
+        $this->send_sftp_packet(NET_SFTP_RMDIR, Strings::packSSH2('s', $dir));
+
+        $response = $this->get_sftp_packet();
+        if ($this->packet_type != NET_SFTP_STATUS) {
+            throw new \UnexpectedValueException('Expected NET_SFTP_STATUS. '
+                                              . 'Got packet type: ' . $this->packet_type);
+        }
+
+        list($status) = Strings::unpackSSH2('N', $response);
+        if ($status != NET_SFTP_STATUS_OK) {
+            // presumably SSH_FX_NO_SUCH_FILE or SSH_FX_PERMISSION_DENIED?
+            $this->logError($response, $status);
+            return false;
+        }
+
+        $this->remove_from_stat_cache($dir);
+        // the following will do a soft delete, which would be useful if you deleted a file
+        // and then tried to do a stat on the deleted file. the above, in contrast, does
+        // a hard delete
+        //$this->update_stat_cache($dir, false);
+
+        return true;
+    }
+
+    /**
+     * Uploads a file to the SFTP server.
+     *
+     * By default, \phpseclib3\Net\SFTP::put() does not read from the local filesystem.  $data is dumped directly into $remote_file.
+     * So, for example, if you set $data to 'filename.ext' and then do \phpseclib3\Net\SFTP::get(), you will get a file, twelve bytes
+     * long, containing 'filename.ext' as its contents.
+     *
+     * Setting $mode to self::SOURCE_LOCAL_FILE will change the above behavior.  With self::SOURCE_LOCAL_FILE, $remote_file will
+     * contain as many bytes as filename.ext does on your local filesystem.  If your filename.ext is 1MB then that is how
+     * large $remote_file will be, as well.
+     *
+     * Setting $mode to self::SOURCE_CALLBACK will use $data as callback function, which gets only one parameter -- number
+     * of bytes to return, and returns a string if there is some data or null if there is no more data
+     *
+     * If $data is a resource then it'll be used as a resource instead.
+     *
+     * Currently, only binary mode is supported.  As such, if the line endings need to be adjusted, you will need to take
+     * care of that, yourself.
+     *
+     * $mode can take an additional two parameters - self::RESUME and self::RESUME_START. These are bitwise AND'd with
+     * $mode. So if you want to resume upload of a 300mb file on the local file system you'd set $mode to the following:
+     *
+     * self::SOURCE_LOCAL_FILE | self::RESUME
+     *
+     * If you wanted to simply append the full contents of a local file to the full contents of a remote file you'd replace
+     * self::RESUME with self::RESUME_START.
+     *
+     * If $mode & (self::RESUME | self::RESUME_START) then self::RESUME_START will be assumed.
+     *
+     * $start and $local_start give you more fine grained control over this process and take precident over self::RESUME
+     * when they're non-negative. ie. $start could let you write at the end of a file (like self::RESUME) or in the middle
+     * of one. $local_start could let you start your reading from the end of a file (like self::RESUME_START) or in the
+     * middle of one.
+     *
+     * Setting $local_start to > 0 or $mode | self::RESUME_START doesn't do anything unless $mode | self::SOURCE_LOCAL_FILE.
+     *
+     * {@internal ASCII mode for SFTPv4/5/6 can be supported by adding a new function - \phpseclib3\Net\SFTP::setMode().}
+     *
+     * @param string $remote_file
+     * @param string|resource $data
+     * @param int $mode
+     * @param int $start
+     * @param int $local_start
+     * @param callable|null $progressCallback
+     * @throws \UnexpectedValueException on receipt of unexpected packets
+     * @throws \BadFunctionCallException if you're uploading via a callback and the callback function is invalid
+     * @throws \phpseclib3\Exception\FileNotFoundException if you're uploading via a file and the file doesn't exist
+     * @return bool
+     */
+    public function put($remote_file, $data, $mode = self::SOURCE_STRING, $start = -1, $local_start = -1, $progressCallback = null)
+    {
+        if (!$this->precheck()) {
+            return false;
+        }
+
+        $remote_file = $this->realpath($remote_file);
+        if ($remote_file === false) {
+            return false;
+        }
+
+        $this->remove_from_stat_cache($remote_file);
+
+        if ($this->version >= 5) {
+            $flags = NET_SFTP_OPEN_OPEN_OR_CREATE;
+        } else {
+            $flags = NET_SFTP_OPEN_WRITE | NET_SFTP_OPEN_CREATE;
+            // according to the SFTP specs, NET_SFTP_OPEN_APPEND should "force all writes to append data at the end of the file."
+            // in practice, it doesn't seem to do that.
+            //$flags|= ($mode & self::RESUME) ? NET_SFTP_OPEN_APPEND : NET_SFTP_OPEN_TRUNCATE;
+        }
+
+        if ($start >= 0) {
+            $offset = $start;
+        } elseif ($mode & (self::RESUME | self::RESUME_START)) {
+            // if NET_SFTP_OPEN_APPEND worked as it should _size() wouldn't need to be called
+            $stat = $this->stat($remote_file);
+            $offset = $stat !== false && $stat['size'] ? $stat['size'] : 0;
+        } else {
+            $offset = 0;
+            if ($this->version >= 5) {
+                $flags = NET_SFTP_OPEN_CREATE_TRUNCATE;
+            } else {
+                $flags |= NET_SFTP_OPEN_TRUNCATE;
+            }
+        }
+
+        $this->remove_from_stat_cache($remote_file);
+
+        $packet = Strings::packSSH2('s', $remote_file);
+        $packet .= $this->version >= 5 ?
+            pack('N3', 0, $flags, 0) :
+            pack('N2', $flags, 0);
+        $this->send_sftp_packet(NET_SFTP_OPEN, $packet);
+
+        $response = $this->get_sftp_packet();
+        switch ($this->packet_type) {
+            case NET_SFTP_HANDLE:
+                $handle = substr($response, 4);
+                break;
+            case NET_SFTP_STATUS:
+                $this->logError($response);
+                return false;
+            default:
+                throw new \UnexpectedValueException('Expected NET_SFTP_HANDLE or NET_SFTP_STATUS. '
+                                                  . 'Got packet type: ' . $this->packet_type);
+        }
+
+        // http://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#section-8.2.3
+        $dataCallback = false;
+        switch (true) {
+            case $mode & self::SOURCE_CALLBACK:
+                if (!is_callable($data)) {
+                    throw new \BadFunctionCallException("\$data should be is_callable() if you specify SOURCE_CALLBACK flag");
+                }
+                $dataCallback = $data;
+                // do nothing
+                break;
+            case is_resource($data):
+                $mode = $mode & ~self::SOURCE_LOCAL_FILE;
+                $info = stream_get_meta_data($data);
+                if (isset($info['wrapper_type']) && $info['wrapper_type'] == 'PHP' && $info['stream_type'] == 'Input') {
+                    $fp = fopen('php://memory', 'w+');
+                    stream_copy_to_stream($data, $fp);
+                    rewind($fp);
+                } else {
+                    $fp = $data;
+                }
+                break;
+            case $mode & self::SOURCE_LOCAL_FILE:
+                if (!is_file($data)) {
+                    throw new FileNotFoundException("$data is not a valid file");
+                }
+                $fp = @fopen($data, 'rb');
+                if (!$fp) {
+                    return false;
+                }
+        }
+
+        if (isset($fp)) {
+            $stat = fstat($fp);
+            $size = !empty($stat) ? $stat['size'] : 0;
+
+            if ($local_start >= 0) {
+                fseek($fp, $local_start);
+                $size -= $local_start;
+            } elseif ($mode & self::RESUME) {
+                fseek($fp, $offset);
+                $size -= $offset;
+            }
+        } elseif ($dataCallback) {
+            $size = 0;
+        } else {
+            $size = strlen($data);
+        }
+
+        $sent = 0;
+        $size = $size < 0 ? ($size & 0x7FFFFFFF) + 0x80000000 : $size;
+
+        $sftp_packet_size = $this->max_sftp_packet;
+        // make the SFTP packet be exactly the SFTP packet size by including the bytes in the NET_SFTP_WRITE packets "header"
+        $sftp_packet_size -= strlen($handle) + 25;
+        $i = $j = 0;
+        while ($dataCallback || ($size === 0 || $sent < $size)) {
+            if ($dataCallback) {
+                $temp = $dataCallback($sftp_packet_size);
+                if (is_null($temp)) {
+                    break;
+                }
+            } else {
+                $temp = isset($fp) ? fread($fp, $sftp_packet_size) : substr($data, $sent, $sftp_packet_size);
+                if ($temp === false || $temp === '') {
+                    break;
+                }
+            }
+
+            $subtemp = $offset + $sent;
+            $packet = pack('Na*N3a*', strlen($handle), $handle, $subtemp / 4294967296, $subtemp, strlen($temp), $temp);
+            try {
+                $this->send_sftp_packet(NET_SFTP_WRITE, $packet, $j);
+            } catch (\Exception $e) {
+                if ($mode & self::SOURCE_LOCAL_FILE) {
+                    fclose($fp);
+                }
+                throw $e;
+            }
+            $sent += strlen($temp);
+            if (is_callable($progressCallback)) {
+                $progressCallback($sent);
+            }
+
+            $i++;
+            $j++;
+            if ($i == NET_SFTP_UPLOAD_QUEUE_SIZE) {
+                if (!$this->read_put_responses($i)) {
+                    $i = 0;
+                    break;
+                }
+                $i = 0;
+            }
+        }
+
+        $result = $this->close_handle($handle);
+
+        if (!$this->read_put_responses($i)) {
+            if ($mode & self::SOURCE_LOCAL_FILE) {
+                fclose($fp);
+            }
+            $this->close_handle($handle);
+            return false;
+        }
+
+        if ($mode & SFTP::SOURCE_LOCAL_FILE) {
+            if (isset($fp) && is_resource($fp)) {
+                fclose($fp);
+            }
+
+            if ($this->preserveTime) {
+                $stat = stat($data);
+                $attr = $this->version < 4 ?
+                    pack('N3', NET_SFTP_ATTR_ACCESSTIME, $stat['atime'], $stat['mtime']) :
+                    Strings::packSSH2('NQ2', NET_SFTP_ATTR_ACCESSTIME | NET_SFTP_ATTR_MODIFYTIME, $stat['atime'], $stat['mtime']);
+                if (!$this->setstat($remote_file, $attr, false)) {
+                    throw new \RuntimeException('Error setting file time');
+                }
+            }
+        }
+
+        return $result;
+    }
+
+    /**
+     * Reads multiple successive SSH_FXP_WRITE responses
+     *
+     * Sending an SSH_FXP_WRITE packet and immediately reading its response isn't as efficient as blindly sending out $i
+     * SSH_FXP_WRITEs, in succession, and then reading $i responses.
+     *
+     * @param int $i
+     * @return bool
+     * @throws \UnexpectedValueException on receipt of unexpected packets
+     */
+    private function read_put_responses($i)
+    {
+        while ($i--) {
+            $response = $this->get_sftp_packet();
+            if ($this->packet_type != NET_SFTP_STATUS) {
+                throw new \UnexpectedValueException('Expected NET_SFTP_STATUS. '
+                                                  . 'Got packet type: ' . $this->packet_type);
+            }
+
+            list($status) = Strings::unpackSSH2('N', $response);
+            if ($status != NET_SFTP_STATUS_OK) {
+                $this->logError($response, $status);
+                break;
+            }
+        }
+
+        return $i < 0;
+    }
+
+    /**
+     * Close handle
+     *
+     * @param string $handle
+     * @return bool
+     * @throws \UnexpectedValueException on receipt of unexpected packets
+     */
+    private function close_handle($handle)
+    {
+        $this->send_sftp_packet(NET_SFTP_CLOSE, pack('Na*', strlen($handle), $handle));
+
+        // "The client MUST release all resources associated with the handle regardless of the status."
+        //  -- http://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#section-8.1.3
+        $response = $this->get_sftp_packet();
+        if ($this->packet_type != NET_SFTP_STATUS) {
+            throw new \UnexpectedValueException('Expected NET_SFTP_STATUS. '
+                                              . 'Got packet type: ' . $this->packet_type);
+        }
+
+        list($status) = Strings::unpackSSH2('N', $response);
+        if ($status != NET_SFTP_STATUS_OK) {
+            $this->logError($response, $status);
+            return false;
+        }
+
+        return true;
+    }
+
+    /**
+     * Downloads a file from the SFTP server.
+     *
+     * Returns a string containing the contents of $remote_file if $local_file is left undefined or a boolean false if
+     * the operation was unsuccessful.  If $local_file is defined, returns true or false depending on the success of the
+     * operation.
+     *
+     * $offset and $length can be used to download files in chunks.
+     *
+     * @param string $remote_file
+     * @param string|bool|resource|callable $local_file
+     * @param int $offset
+     * @param int $length
+     * @param callable|null $progressCallback
+     * @throws \UnexpectedValueException on receipt of unexpected packets
+     * @return string|bool
+     */
+    public function get($remote_file, $local_file = false, $offset = 0, $length = -1, $progressCallback = null)
+    {
+        if (!$this->precheck()) {
+            return false;
+        }
+
+        $remote_file = $this->realpath($remote_file);
+        if ($remote_file === false) {
+            return false;
+        }
+
+        $packet = Strings::packSSH2('s', $remote_file);
+        $packet .= $this->version >= 5 ?
+            pack('N3', 0, NET_SFTP_OPEN_OPEN_EXISTING, 0) :
+            pack('N2', NET_SFTP_OPEN_READ, 0);
+        $this->send_sftp_packet(NET_SFTP_OPEN, $packet);
+
+        $response = $this->get_sftp_packet();
+        switch ($this->packet_type) {
+            case NET_SFTP_HANDLE:
+                $handle = substr($response, 4);
+                break;
+            case NET_SFTP_STATUS: // presumably SSH_FX_NO_SUCH_FILE or SSH_FX_PERMISSION_DENIED
+                $this->logError($response);
+                return false;
+            default:
+                throw new \UnexpectedValueException('Expected NET_SFTP_HANDLE or NET_SFTP_STATUS. '
+                                                  . 'Got packet type: ' . $this->packet_type);
+        }
+
+        if (is_resource($local_file)) {
+            $fp = $local_file;
+            $stat = fstat($fp);
+            $res_offset = $stat['size'];
+        } else {
+            $res_offset = 0;
+            if ($local_file !== false && !is_callable($local_file)) {
+                $fp = fopen($local_file, 'wb');
+                if (!$fp) {
+                    return false;
+                }
+            } else {
+                $content = '';
+            }
+        }
+
+        $fclose_check = $local_file !== false && !is_callable($local_file) && !is_resource($local_file);
+
+        $start = $offset;
+        $read = 0;
+        while (true) {
+            $i = 0;
+
+            while ($i < NET_SFTP_QUEUE_SIZE && ($length < 0 || $read < $length)) {
+                $tempoffset = $start + $read;
+
+                $packet_size = $length > 0 ? min($this->max_sftp_packet, $length - $read) : $this->max_sftp_packet;
+
+                $packet = Strings::packSSH2('sN3', $handle, $tempoffset / 4294967296, $tempoffset, $packet_size);
+                try {
+                    $this->send_sftp_packet(NET_SFTP_READ, $packet, $i);
+                } catch (\Exception $e) {
+                    if ($fclose_check) {
+                        fclose($fp);
+                    }
+                    throw $e;
+                }
+                $packet = null;
+                $read += $packet_size;
+                $i++;
+            }
+
+            if (!$i) {
+                break;
+            }
+
+            $packets_sent = $i - 1;
+
+            $clear_responses = false;
+            while ($i > 0) {
+                $i--;
+
+                if ($clear_responses) {
+                    $this->get_sftp_packet($packets_sent - $i);
+                    continue;
+                } else {
+                    $response = $this->get_sftp_packet($packets_sent - $i);
+                }
+
+                switch ($this->packet_type) {
+                    case NET_SFTP_DATA:
+                        $temp = substr($response, 4);
+                        $offset += strlen($temp);
+                        if ($local_file === false) {
+                            $content .= $temp;
+                        } elseif (is_callable($local_file)) {
+                            $local_file($temp);
+                        } else {
+                            fputs($fp, $temp);
+                        }
+                        if (is_callable($progressCallback)) {
+                            call_user_func($progressCallback, $offset);
+                        }
+                        $temp = null;
+                        break;
+                    case NET_SFTP_STATUS:
+                        // could, in theory, return false if !strlen($content) but we'll hold off for the time being
+                        $this->logError($response);
+                        $clear_responses = true; // don't break out of the loop yet, so we can read the remaining responses
+                        break;
+                    default:
+                        if ($fclose_check) {
+                            fclose($fp);
+                        }
+                        if ($this->channel_close) {
+                            $this->partial_init = false;
+                            $this->init_sftp_connection();
+                            return false;
+                        } else {
+                            throw new \UnexpectedValueException('Expected NET_SFTP_DATA or NET_SFTP_STATUS. '
+                                                              . 'Got packet type: ' . $this->packet_type);
+                        }
+                }
+                $response = null;
+            }
+
+            if ($clear_responses) {
+                break;
+            }
+        }
+
+        if ($fclose_check) {
+            fclose($fp);
+
+            if ($this->preserveTime) {
+                $stat = $this->stat($remote_file);
+                touch($local_file, $stat['mtime'], $stat['atime']);
+            }
+        }
+
+        if (!$this->close_handle($handle)) {
+            return false;
+        }
+
+        // if $content isn't set that means a file was written to
+        return isset($content) ? $content : true;
+    }
+
+    /**
+     * Deletes a file on the SFTP server.
+     *
+     * @param string $path
+     * @param bool $recursive
+     * @return bool
+     * @throws \UnexpectedValueException on receipt of unexpected packets
+     */
+    public function delete($path, $recursive = true)
+    {
+        if (!$this->precheck()) {
+            return false;
+        }
+
+        if (is_object($path)) {
+            // It's an object. Cast it as string before we check anything else.
+            $path = (string) $path;
+        }
+
+        if (!is_string($path) || $path == '') {
+            return false;
+        }
+
+        $path = $this->realpath($path);
+        if ($path === false) {
+            return false;
+        }
+
+        // http://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#section-8.3
+        $this->send_sftp_packet(NET_SFTP_REMOVE, pack('Na*', strlen($path), $path));
+
+        $response = $this->get_sftp_packet();
+        if ($this->packet_type != NET_SFTP_STATUS) {
+            throw new \UnexpectedValueException('Expected NET_SFTP_STATUS. '
+                                              . 'Got packet type: ' . $this->packet_type);
+        }
+
+        // if $status isn't SSH_FX_OK it's probably SSH_FX_NO_SUCH_FILE or SSH_FX_PERMISSION_DENIED
+        list($status) = Strings::unpackSSH2('N', $response);
+        if ($status != NET_SFTP_STATUS_OK) {
+            $this->logError($response, $status);
+            if (!$recursive) {
+                return false;
+            }
+
+            $i = 0;
+            $result = $this->delete_recursive($path, $i);
+            $this->read_put_responses($i);
+            return $result;
+        }
+
+        $this->remove_from_stat_cache($path);
+
+        return true;
+    }
+
+    /**
+     * Recursively deletes directories on the SFTP server
+     *
+     * Minimizes directory lookups and SSH_FXP_STATUS requests for speed.
+     *
+     * @param string $path
+     * @param int $i
+     * @return bool
+     */
+    private function delete_recursive($path, &$i)
+    {
+        if (!$this->read_put_responses($i)) {
+            return false;
+        }
+        $i = 0;
+        $entries = $this->readlist($path, true);
+
+        // The folder does not exist at all, so we cannot delete it.
+        if ($entries === NET_SFTP_STATUS_NO_SUCH_FILE) {
+            return false;
+        }
+
+        // Normally $entries would have at least . and .. but it might not if the directories
+        // permissions didn't allow reading. If this happens then default to an empty list of files.
+        if ($entries === false || is_int($entries)) {
+            $entries = [];
+        }
+
+        unset($entries['.'], $entries['..']);
+        foreach ($entries as $filename => $props) {
+            if (!isset($props['type'])) {
+                return false;
+            }
+
+            $temp = $path . '/' . $filename;
+            if ($props['type'] == NET_SFTP_TYPE_DIRECTORY) {
+                if (!$this->delete_recursive($temp, $i)) {
+                    return false;
+                }
+            } else {
+                $this->send_sftp_packet(NET_SFTP_REMOVE, Strings::packSSH2('s', $temp));
+                $this->remove_from_stat_cache($temp);
+
+                $i++;
+
+                if ($i >= NET_SFTP_QUEUE_SIZE) {
+                    if (!$this->read_put_responses($i)) {
+                        return false;
+                    }
+                    $i = 0;
+                }
+            }
+        }
+
+        $this->send_sftp_packet(NET_SFTP_RMDIR, Strings::packSSH2('s', $path));
+        $this->remove_from_stat_cache($path);
+
+        $i++;
+
+        if ($i >= NET_SFTP_QUEUE_SIZE) {
+            if (!$this->read_put_responses($i)) {
+                return false;
+            }
+            $i = 0;
+        }
+
+        return true;
+    }
+
+    /**
+     * Checks whether a file or directory exists
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function file_exists($path)
+    {
+        if ($this->use_stat_cache) {
+            if (!$this->precheck()) {
+                return false;
+            }
+
+            $path = $this->realpath($path);
+
+            $result = $this->query_stat_cache($path);
+
+            if (isset($result)) {
+                // return true if $result is an array or if it's an stdClass object
+                return $result !== false;
+            }
+        }
+
+        return $this->stat($path) !== false;
+    }
+
+    /**
+     * Tells whether the filename is a directory
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function is_dir($path)
+    {
+        $result = $this->get_stat_cache_prop($path, 'type');
+        if ($result === false) {
+            return false;
+        }
+        return $result === NET_SFTP_TYPE_DIRECTORY;
+    }
+
+    /**
+     * Tells whether the filename is a regular file
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function is_file($path)
+    {
+        $result = $this->get_stat_cache_prop($path, 'type');
+        if ($result === false) {
+            return false;
+        }
+        return $result === NET_SFTP_TYPE_REGULAR;
+    }
+
+    /**
+     * Tells whether the filename is a symbolic link
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function is_link($path)
+    {
+        $result = $this->get_lstat_cache_prop($path, 'type');
+        if ($result === false) {
+            return false;
+        }
+        return $result === NET_SFTP_TYPE_SYMLINK;
+    }
+
+    /**
+     * Tells whether a file exists and is readable
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function is_readable($path)
+    {
+        if (!$this->precheck()) {
+            return false;
+        }
+
+        $packet = Strings::packSSH2('sNN', $this->realpath($path), NET_SFTP_OPEN_READ, 0);
+        $this->send_sftp_packet(NET_SFTP_OPEN, $packet);
+
+        $response = $this->get_sftp_packet();
+        switch ($this->packet_type) {
+            case NET_SFTP_HANDLE:
+                return true;
+            case NET_SFTP_STATUS: // presumably SSH_FX_NO_SUCH_FILE or SSH_FX_PERMISSION_DENIED
+                return false;
+            default:
+                throw new \UnexpectedValueException('Expected NET_SFTP_HANDLE or NET_SFTP_STATUS. '
+                                                  . 'Got packet type: ' . $this->packet_type);
+        }
+    }
+
+    /**
+     * Tells whether the filename is writable
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function is_writable($path)
+    {
+        if (!$this->precheck()) {
+            return false;
+        }
+
+        $packet = Strings::packSSH2('sNN', $this->realpath($path), NET_SFTP_OPEN_WRITE, 0);
+        $this->send_sftp_packet(NET_SFTP_OPEN, $packet);
+
+        $response = $this->get_sftp_packet();
+        switch ($this->packet_type) {
+            case NET_SFTP_HANDLE:
+                return true;
+            case NET_SFTP_STATUS: // presumably SSH_FX_NO_SUCH_FILE or SSH_FX_PERMISSION_DENIED
+                return false;
+            default:
+                throw new \UnexpectedValueException('Expected SSH_FXP_HANDLE or SSH_FXP_STATUS. '
+                                                  . 'Got packet type: ' . $this->packet_type);
+        }
+    }
+
+    /**
+     * Tells whether the filename is writeable
+     *
+     * Alias of is_writable
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function is_writeable($path)
+    {
+        return $this->is_writable($path);
+    }
+
+    /**
+     * Gets last access time of file
+     *
+     * @param string $path
+     * @return mixed
+     */
+    public function fileatime($path)
+    {
+        return $this->get_stat_cache_prop($path, 'atime');
+    }
+
+    /**
+     * Gets file modification time
+     *
+     * @param string $path
+     * @return mixed
+     */
+    public function filemtime($path)
+    {
+        return $this->get_stat_cache_prop($path, 'mtime');
+    }
+
+    /**
+     * Gets file permissions
+     *
+     * @param string $path
+     * @return mixed
+     */
+    public function fileperms($path)
+    {
+        return $this->get_stat_cache_prop($path, 'mode');
+    }
+
+    /**
+     * Gets file owner
+     *
+     * @param string $path
+     * @return mixed
+     */
+    public function fileowner($path)
+    {
+        return $this->get_stat_cache_prop($path, 'uid');
+    }
+
+    /**
+     * Gets file group
+     *
+     * @param string $path
+     * @return mixed
+     */
+    public function filegroup($path)
+    {
+        return $this->get_stat_cache_prop($path, 'gid');
+    }
+
+    /**
+     * Recursively go through rawlist() output to get the total filesize
+     *
+     * @return int
+     */
+    private static function recursiveFilesize(array $files)
+    {
+        $size = 0;
+        foreach ($files as $name => $file) {
+            if ($name == '.' || $name == '..') {
+                continue;
+            }
+            $size += is_array($file) ?
+                self::recursiveFilesize($file) :
+                $file->size;
+        }
+        return $size;
+    }
+
+    /**
+     * Gets file size
+     *
+     * @param string $path
+     * @param bool $recursive
+     * @return mixed
+     */
+    public function filesize($path, $recursive = false)
+    {
+        return !$recursive || $this->filetype($path) != 'dir' ?
+            $this->get_stat_cache_prop($path, 'size') :
+            self::recursiveFilesize($this->rawlist($path, true));
+    }
+
+    /**
+     * Gets file type
+     *
+     * @param string $path
+     * @return string|false
+     */
+    public function filetype($path)
+    {
+        $type = $this->get_stat_cache_prop($path, 'type');
+        if ($type === false) {
+            return false;
+        }
+
+        switch ($type) {
+            case NET_SFTP_TYPE_BLOCK_DEVICE:
+                return 'block';
+            case NET_SFTP_TYPE_CHAR_DEVICE:
+                return 'char';
+            case NET_SFTP_TYPE_DIRECTORY:
+                return 'dir';
+            case NET_SFTP_TYPE_FIFO:
+                return 'fifo';
+            case NET_SFTP_TYPE_REGULAR:
+                return 'file';
+            case NET_SFTP_TYPE_SYMLINK:
+                return 'link';
+            default:
+                return false;
+        }
+    }
+
+    /**
+     * Return a stat properity
+     *
+     * Uses cache if appropriate.
+     *
+     * @param string $path
+     * @param string $prop
+     * @return mixed
+     */
+    private function get_stat_cache_prop($path, $prop)
+    {
+        return $this->get_xstat_cache_prop($path, $prop, 'stat');
+    }
+
+    /**
+     * Return an lstat properity
+     *
+     * Uses cache if appropriate.
+     *
+     * @param string $path
+     * @param string $prop
+     * @return mixed
+     */
+    private function get_lstat_cache_prop($path, $prop)
+    {
+        return $this->get_xstat_cache_prop($path, $prop, 'lstat');
+    }
+
+    /**
+     * Return a stat or lstat properity
+     *
+     * Uses cache if appropriate.
+     *
+     * @param string $path
+     * @param string $prop
+     * @param string $type
+     * @return mixed
+     */
+    private function get_xstat_cache_prop($path, $prop, $type)
+    {
+        if (!$this->precheck()) {
+            return false;
+        }
+
+        if ($this->use_stat_cache) {
+            $path = $this->realpath($path);
+
+            $result = $this->query_stat_cache($path);
+
+            if (is_object($result) && isset($result->$type)) {
+                return $result->{$type}[$prop];
+            }
+        }
+
+        $result = $this->$type($path);
+
+        if ($result === false || !isset($result[$prop])) {
+            return false;
+        }
+
+        return $result[$prop];
+    }
+
+    /**
+     * Renames a file or a directory on the SFTP server.
+     *
+     * If the file already exists this will return false
+     *
+     * @param string $oldname
+     * @param string $newname
+     * @return bool
+     * @throws \UnexpectedValueException on receipt of unexpected packets
+     */
+    public function rename($oldname, $newname)
+    {
+        if (!$this->precheck()) {
+            return false;
+        }
+
+        $oldname = $this->realpath($oldname);
+        $newname = $this->realpath($newname);
+        if ($oldname === false || $newname === false) {
+            return false;
+        }
+
+        // http://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#section-8.3
+        $packet = Strings::packSSH2('ss', $oldname, $newname);
+        if ($this->version >= 5) {
+            /* quoting https://datatracker.ietf.org/doc/html/draft-ietf-secsh-filexfer-05#section-6.5 ,
+
+               'flags' is 0 or a combination of:
+
+                   SSH_FXP_RENAME_OVERWRITE  0x00000001
+                   SSH_FXP_RENAME_ATOMIC     0x00000002
+                   SSH_FXP_RENAME_NATIVE     0x00000004
+
+               (none of these are currently supported) */
+            $packet .= "\0\0\0\0";
+        }
+        $this->send_sftp_packet(NET_SFTP_RENAME, $packet);
+
+        $response = $this->get_sftp_packet();
+        if ($this->packet_type != NET_SFTP_STATUS) {
+            throw new \UnexpectedValueException('Expected NET_SFTP_STATUS. '
+                                              . 'Got packet type: ' . $this->packet_type);
+        }
+
+        // if $status isn't SSH_FX_OK it's probably SSH_FX_NO_SUCH_FILE or SSH_FX_PERMISSION_DENIED
+        list($status) = Strings::unpackSSH2('N', $response);
+        if ($status != NET_SFTP_STATUS_OK) {
+            $this->logError($response, $status);
+            return false;
+        }
+
+        // don't move the stat cache entry over since this operation could very well change the
+        // atime and mtime attributes
+        //$this->update_stat_cache($newname, $this->query_stat_cache($oldname));
+        $this->remove_from_stat_cache($oldname);
+        $this->remove_from_stat_cache($newname);
+
+        return true;
+    }
+
+    /**
+     * Parse Time
+     *
+     * See '7.7.  Times' of draft-ietf-secsh-filexfer-13 for more info.
+     *
+     * @param string $key
+     * @param int $flags
+     * @param string $response
+     * @return array
+     */
+    private function parseTime($key, $flags, &$response)
+    {
+        $attr = [];
+        list($attr[$key]) = Strings::unpackSSH2('Q', $response);
+        if ($flags & NET_SFTP_ATTR_SUBSECOND_TIMES) {
+            list($attr[$key . '-nseconds']) = Strings::unpackSSH2('N', $response);
+        }
+        return $attr;
+    }
+
+    /**
+     * Parse Attributes
+     *
+     * See '7.  File Attributes' of draft-ietf-secsh-filexfer-13 for more info.
+     *
+     * @param string $response
+     * @return array
+     */
+    protected function parseAttributes(&$response)
+    {
+        if ($this->version >= 4) {
+            list($flags, $attr['type']) = Strings::unpackSSH2('NC', $response);
+        } else {
+            list($flags) = Strings::unpackSSH2('N', $response);
+        }
+
+        foreach (self::$attributes as $key => $value) {
+            switch ($flags & $key) {
+                case NET_SFTP_ATTR_UIDGID:
+                    if ($this->version > 3) {
+                        continue 2;
+                    }
+                    break;
+                case NET_SFTP_ATTR_CREATETIME:
+                case NET_SFTP_ATTR_MODIFYTIME:
+                case NET_SFTP_ATTR_ACL:
+                case NET_SFTP_ATTR_OWNERGROUP:
+                case NET_SFTP_ATTR_SUBSECOND_TIMES:
+                    if ($this->version < 4) {
+                        continue 2;
+                    }
+                    break;
+                case NET_SFTP_ATTR_BITS:
+                    if ($this->version < 5) {
+                        continue 2;
+                    }
+                    break;
+                case NET_SFTP_ATTR_ALLOCATION_SIZE:
+                case NET_SFTP_ATTR_TEXT_HINT:
+                case NET_SFTP_ATTR_MIME_TYPE:
+                case NET_SFTP_ATTR_LINK_COUNT:
+                case NET_SFTP_ATTR_UNTRANSLATED_NAME:
+                case NET_SFTP_ATTR_CTIME:
+                    if ($this->version < 6) {
+                        continue 2;
+                    }
+            }
+            switch ($flags & $key) {
+                case NET_SFTP_ATTR_SIZE:             // 0x00000001
+                    // The size attribute is defined as an unsigned 64-bit integer.
+                    // The following will use floats on 32-bit platforms, if necessary.
+                    // As can be seen in the BigInteger class, floats are generally
+                    // IEEE 754 binary64 "double precision" on such platforms and
+                    // as such can represent integers of at least 2^50 without loss
+                    // of precision. Interpreted in filesize, 2^50 bytes = 1024 TiB.
+                    list($attr['size']) = Strings::unpackSSH2('Q', $response);
+                    break;
+                case NET_SFTP_ATTR_UIDGID: // 0x00000002 (SFTPv3 only)
+                    list($attr['uid'], $attr['gid']) = Strings::unpackSSH2('NN', $response);
+                    break;
+                case NET_SFTP_ATTR_PERMISSIONS: // 0x00000004
+                    list($attr['mode']) = Strings::unpackSSH2('N', $response);
+                    $fileType = $this->parseMode($attr['mode']);
+                    if ($this->version < 4 && $fileType !== false) {
+                        $attr += ['type' => $fileType];
+                    }
+                    break;
+                case NET_SFTP_ATTR_ACCESSTIME: // 0x00000008
+                    if ($this->version >= 4) {
+                        $attr += $this->parseTime('atime', $flags, $response);
+                        break;
+                    }
+                    list($attr['atime'], $attr['mtime']) = Strings::unpackSSH2('NN', $response);
+                    break;
+                case NET_SFTP_ATTR_CREATETIME:       // 0x00000010 (SFTPv4+)
+                    $attr += $this->parseTime('createtime', $flags, $response);
+                    break;
+                case NET_SFTP_ATTR_MODIFYTIME:       // 0x00000020
+                    $attr += $this->parseTime('mtime', $flags, $response);
+                    break;
+                case NET_SFTP_ATTR_ACL:              // 0x00000040
+                    // access control list
+                    // see https://datatracker.ietf.org/doc/html/draft-ietf-secsh-filexfer-04#section-5.7
+                    // currently unsupported
+                    list($count) = Strings::unpackSSH2('N', $response);
+                    for ($i = 0; $i < $count; $i++) {
+                        list($type, $flag, $mask, $who) = Strings::unpackSSH2('N3s', $result);
+                    }
+                    break;
+                case NET_SFTP_ATTR_OWNERGROUP:       // 0x00000080
+                    list($attr['owner'], $attr['$group']) = Strings::unpackSSH2('ss', $response);
+                    break;
+                case NET_SFTP_ATTR_SUBSECOND_TIMES:  // 0x00000100
+                    break;
+                case NET_SFTP_ATTR_BITS:             // 0x00000200 (SFTPv5+)
+                    // see https://datatracker.ietf.org/doc/html/draft-ietf-secsh-filexfer-05#section-5.8
+                    // currently unsupported
+                    // tells if you file is:
+                    // readonly, system, hidden, case inensitive, archive, encrypted, compressed, sparse
+                    // append only, immutable, sync
+                    list($attrib_bits, $attrib_bits_valid) = Strings::unpackSSH2('N2', $response);
+                    // if we were actually gonna implement the above it ought to be
+                    // $attr['attrib-bits'] and $attr['attrib-bits-valid']
+                    // eg. - instead of _
+                    break;
+                case NET_SFTP_ATTR_ALLOCATION_SIZE:  // 0x00000400 (SFTPv6+)
+                    // see https://datatracker.ietf.org/doc/html/draft-ietf-secsh-filexfer-13#section-7.4
+                    // represents the number of bytes that the file consumes on the disk. will
+                    // usually be larger than the 'size' field
+                    list($attr['allocation-size']) = Strings::unpackSSH2('Q', $response);
+                    break;
+                case NET_SFTP_ATTR_TEXT_HINT:        // 0x00000800
+                    // https://datatracker.ietf.org/doc/html/draft-ietf-secsh-filexfer-13#section-7.10
+                    // currently unsupported
+                    // tells if file is "known text", "guessed text", "known binary", "guessed binary"
+                    list($text_hint) = Strings::unpackSSH2('C', $response);
+                    // the above should be $attr['text-hint']
+                    break;
+                case NET_SFTP_ATTR_MIME_TYPE:        // 0x00001000
+                    // see https://datatracker.ietf.org/doc/html/draft-ietf-secsh-filexfer-13#section-7.11
+                    list($attr['mime-type']) = Strings::unpackSSH2('s', $response);
+                    break;
+                case NET_SFTP_ATTR_LINK_COUNT:       // 0x00002000
+                    // see https://datatracker.ietf.org/doc/html/draft-ietf-secsh-filexfer-13#section-7.12
+                    list($attr['link-count']) = Strings::unpackSSH2('N', $response);
+                    break;
+                case NET_SFTP_ATTR_UNTRANSLATED_NAME:// 0x00004000
+                    // see https://datatracker.ietf.org/doc/html/draft-ietf-secsh-filexfer-13#section-7.13
+                    list($attr['untranslated-name']) = Strings::unpackSSH2('s', $response);
+                    break;
+                case NET_SFTP_ATTR_CTIME:            // 0x00008000
+                    // 'ctime' contains the last time the file attributes were changed.  The
+                    // exact meaning of this field depends on the server.
+                    $attr += $this->parseTime('ctime', $flags, $response);
+                    break;
+                case NET_SFTP_ATTR_EXTENDED: // 0x80000000
+                    list($count) = Strings::unpackSSH2('N', $response);
+                    for ($i = 0; $i < $count; $i++) {
+                        list($key, $value) = Strings::unpackSSH2('ss', $response);
+                        $attr[$key] = $value;
+                    }
+            }
+        }
+        return $attr;
+    }
+
+    /**
+     * Attempt to identify the file type
+     *
+     * Quoting the SFTP RFC, "Implementations MUST NOT send bits that are not defined" but they seem to anyway
+     *
+     * @param int $mode
+     * @return int
+     */
+    private function parseMode($mode)
+    {
+        // values come from http://lxr.free-electrons.com/source/include/uapi/linux/stat.h#L12
+        // see, also, http://linux.die.net/man/2/stat
+        switch ($mode & 0170000) {// ie. 1111 0000 0000 0000
+            case 0000000: // no file type specified - figure out the file type using alternative means
+                return false;
+            case 0040000:
+                return NET_SFTP_TYPE_DIRECTORY;
+            case 0100000:
+                return NET_SFTP_TYPE_REGULAR;
+            case 0120000:
+                return NET_SFTP_TYPE_SYMLINK;
+            // new types introduced in SFTPv5+
+            // http://tools.ietf.org/html/draft-ietf-secsh-filexfer-05#section-5.2
+            case 0010000: // named pipe (fifo)
+                return NET_SFTP_TYPE_FIFO;
+            case 0020000: // character special
+                return NET_SFTP_TYPE_CHAR_DEVICE;
+            case 0060000: // block special
+                return NET_SFTP_TYPE_BLOCK_DEVICE;
+            case 0140000: // socket
+                return NET_SFTP_TYPE_SOCKET;
+            case 0160000: // whiteout
+                // "SPECIAL should be used for files that are of
+                //  a known type which cannot be expressed in the protocol"
+                return NET_SFTP_TYPE_SPECIAL;
+            default:
+                return NET_SFTP_TYPE_UNKNOWN;
+        }
+    }
+
+    /**
+     * Parse Longname
+     *
+     * SFTPv3 doesn't provide any easy way of identifying a file type.  You could try to open
+     * a file as a directory and see if an error is returned or you could try to parse the
+     * SFTPv3-specific longname field of the SSH_FXP_NAME packet.  That's what this function does.
+     * The result is returned using the
+     * {@link http://tools.ietf.org/html/draft-ietf-secsh-filexfer-04#section-5.2 SFTPv4 type constants}.
+     *
+     * If the longname is in an unrecognized format bool(false) is returned.
+     *
+     * @param string $longname
+     * @return mixed
+     */
+    private function parseLongname($longname)
+    {
+        // http://en.wikipedia.org/wiki/Unix_file_types
+        // http://en.wikipedia.org/wiki/Filesystem_permissions#Notation_of_traditional_Unix_permissions
+        if (preg_match('#^[^/]([r-][w-][xstST-]){3}#', $longname)) {
+            switch ($longname[0]) {
+                case '-':
+                    return NET_SFTP_TYPE_REGULAR;
+                case 'd':
+                    return NET_SFTP_TYPE_DIRECTORY;
+                case 'l':
+                    return NET_SFTP_TYPE_SYMLINK;
+                default:
+                    return NET_SFTP_TYPE_SPECIAL;
+            }
+        }
+
+        return false;
+    }
+
+    /**
+     * Sends SFTP Packets
+     *
+     * See '6. General Packet Format' of draft-ietf-secsh-filexfer-13 for more info.
+     *
+     * @param int $type
+     * @param string $data
+     * @param int $request_id
+     * @see self::_get_sftp_packet()
+     * @see self::send_channel_packet()
+     * @return void
+     */
+    private function send_sftp_packet($type, $data, $request_id = 1)
+    {
+        // in SSH2.php the timeout is cumulative per function call. eg. exec() will
+        // timeout after 10s. but for SFTP.php it's cumulative per packet
+        $this->curTimeout = $this->timeout;
+
+        $packet = $this->use_request_id ?
+            pack('NCNa*', strlen($data) + 5, $type, $request_id, $data) :
+            pack('NCa*', strlen($data) + 1, $type, $data);
+
+        $start = microtime(true);
+        $this->send_channel_packet(self::CHANNEL, $packet);
+        $stop = microtime(true);
+
+        if (defined('NET_SFTP_LOGGING')) {
+            $packet_type = '-> ' . self::$packet_types[$type] .
+                           ' (' . round($stop - $start, 4) . 's)';
+            $this->append_log($packet_type, $data);
+        }
+    }
+
+    /**
+     * Resets a connection for re-use
+     *
+     * @param int $reason
+     */
+    protected function reset_connection($reason)
+    {
+        parent::reset_connection($reason);
+        $this->use_request_id = false;
+        $this->pwd = false;
+        $this->requestBuffer = [];
+        $this->partial_init = false;
+    }
+
+    /**
+     * Receives SFTP Packets
+     *
+     * See '6. General Packet Format' of draft-ietf-secsh-filexfer-13 for more info.
+     *
+     * Incidentally, the number of SSH_MSG_CHANNEL_DATA messages has no bearing on the number of SFTP packets present.
+     * There can be one SSH_MSG_CHANNEL_DATA messages containing two SFTP packets or there can be two SSH_MSG_CHANNEL_DATA
+     * messages containing one SFTP packet.
+     *
+     * @see self::_send_sftp_packet()
+     * @return string
+     */
+    private function get_sftp_packet($request_id = null)
+    {
+        $this->channel_close = false;
+
+        if (isset($request_id) && isset($this->requestBuffer[$request_id])) {
+            $this->packet_type = $this->requestBuffer[$request_id]['packet_type'];
+            $temp = $this->requestBuffer[$request_id]['packet'];
+            unset($this->requestBuffer[$request_id]);
+            return $temp;
+        }
+
+        // in SSH2.php the timeout is cumulative per function call. eg. exec() will
+        // timeout after 10s. but for SFTP.php it's cumulative per packet
+        $this->curTimeout = $this->timeout;
+
+        $start = microtime(true);
+
+        // SFTP packet length
+        while (strlen($this->packet_buffer) < 4) {
+            $temp = $this->get_channel_packet(self::CHANNEL, true);
+            if ($temp === true) {
+                if ($this->channel_status[self::CHANNEL] === NET_SSH2_MSG_CHANNEL_CLOSE) {
+                    $this->channel_close = true;
+                }
+                $this->packet_type = false;
+                $this->packet_buffer = '';
+                return false;
+            }
+            $this->packet_buffer .= $temp;
+        }
+        if (strlen($this->packet_buffer) < 4) {
+            throw new \RuntimeException('Packet is too small');
+        }
+        extract(unpack('Nlength', Strings::shift($this->packet_buffer, 4)));
+        /** @var integer $length */
+
+        $tempLength = $length;
+        $tempLength -= strlen($this->packet_buffer);
+
+        // 256 * 1024 is what SFTP_MAX_MSG_LENGTH is set to in OpenSSH's sftp-common.h
+        if (!$this->allow_arbitrary_length_packets && !$this->use_request_id && $tempLength > 256 * 1024) {
+            throw new \RuntimeException('Invalid Size');
+        }
+
+        // SFTP packet type and data payload
+        while ($tempLength > 0) {
+            $temp = $this->get_channel_packet(self::CHANNEL, true);
+            if ($temp === true) {
+                if ($this->channel_status[self::CHANNEL] === NET_SSH2_MSG_CHANNEL_CLOSE) {
+                    $this->channel_close = true;
+                }
+                $this->packet_type = false;
+                $this->packet_buffer = '';
+                return false;
+            }
+            $this->packet_buffer .= $temp;
+            $tempLength -= strlen($temp);
+        }
+
+        $stop = microtime(true);
+
+        $this->packet_type = ord(Strings::shift($this->packet_buffer));
+
+        if ($this->use_request_id) {
+            extract(unpack('Npacket_id', Strings::shift($this->packet_buffer, 4))); // remove the request id
+            $length -= 5; // account for the request id and the packet type
+        } else {
+            $length -= 1; // account for the packet type
+        }
+
+        $packet = Strings::shift($this->packet_buffer, $length);
+
+        if (defined('NET_SFTP_LOGGING')) {
+            $packet_type = '<- ' . self::$packet_types[$this->packet_type] .
+                           ' (' . round($stop - $start, 4) . 's)';
+            $this->append_log($packet_type, $packet);
+        }
+
+        if (isset($request_id) && $this->use_request_id && $packet_id != $request_id) {
+            $this->requestBuffer[$packet_id] = [
+                'packet_type' => $this->packet_type,
+                'packet' => $packet
+            ];
+            return $this->get_sftp_packet($request_id);
+        }
+
+        return $packet;
+    }
+
+    /**
+     * Logs data packets
+     *
+     * Makes sure that only the last 1MB worth of packets will be logged
+     *
+     * @param string $message_number
+     * @param string $message
+     */
+    private function append_log($message_number, $message)
+    {
+        $this->append_log_helper(
+            NET_SFTP_LOGGING,
+            $message_number,
+            $message,
+            $this->packet_type_log,
+            $this->packet_log,
+            $this->log_size,
+            $this->realtime_log_file,
+            $this->realtime_log_wrap,
+            $this->realtime_log_size
+        );
+    }
+
+    /**
+     * Returns a log of the packets that have been sent and received.
+     *
+     * Returns a string if NET_SFTP_LOGGING == self::LOG_COMPLEX, an array if NET_SFTP_LOGGING == self::LOG_SIMPLE and false if !defined('NET_SFTP_LOGGING')
+     *
+     * @return array|string|false
+     */
+    public function getSFTPLog()
+    {
+        if (!defined('NET_SFTP_LOGGING')) {
+            return false;
+        }
+
+        switch (NET_SFTP_LOGGING) {
+            case self::LOG_COMPLEX:
+                return $this->format_log($this->packet_log, $this->packet_type_log);
+                break;
+            //case self::LOG_SIMPLE:
+            default:
+                return $this->packet_type_log;
+        }
+    }
+
+    /**
+     * Returns all errors on the SFTP layer
+     *
+     * @return array
+     */
+    public function getSFTPErrors()
+    {
+        return $this->sftp_errors;
+    }
+
+    /**
+     * Returns the last error on the SFTP layer
+     *
+     * @return string
+     */
+    public function getLastSFTPError()
+    {
+        return count($this->sftp_errors) ? $this->sftp_errors[count($this->sftp_errors) - 1] : '';
+    }
+
+    /**
+     * Get supported SFTP versions
+     *
+     * @return array
+     */
+    public function getSupportedVersions()
+    {
+        if (!($this->bitmap & SSH2::MASK_LOGIN)) {
+            return false;
+        }
+
+        if (!$this->partial_init) {
+            $this->partial_init_sftp_connection();
+        }
+
+        $temp = ['version' => $this->defaultVersion];
+        if (isset($this->extensions['versions'])) {
+            $temp['extensions'] = $this->extensions['versions'];
+        }
+        return $temp;
+    }
+
+    /**
+     * Get supported SFTP versions
+     *
+     * @return int|false
+     */
+    public function getNegotiatedVersion()
+    {
+        if (!$this->precheck()) {
+            return false;
+        }
+
+        return $this->version;
+    }
+
+    /**
+     * Set preferred version
+     *
+     * If you're preferred version isn't supported then the highest supported
+     * version of SFTP will be utilized. Set to null or false or int(0) to
+     * unset the preferred version
+     *
+     * @param int $version
+     */
+    public function setPreferredVersion($version)
+    {
+        $this->preferredVersion = $version;
+    }
+
+    /**
+     * Disconnect
+     *
+     * @param int $reason
+     * @return false
+     */
+    protected function disconnect_helper($reason)
+    {
+        $this->pwd = false;
+        return parent::disconnect_helper($reason);
+    }
+
+    /**
+     * Enable Date Preservation
+     *
+     */
+    public function enableDatePreservation()
+    {
+        $this->preserveTime = true;
+    }
+
+    /**
+     * Disable Date Preservation
+     *
+     */
+    public function disableDatePreservation()
+    {
+        $this->preserveTime = false;
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Net/SFTP/Stream.php b/vendor/phpseclib/phpseclib/phpseclib/Net/SFTP/Stream.php
new file mode 100644
index 0000000..24047b4
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Net/SFTP/Stream.php
@@ -0,0 +1,756 @@
+<?php
+
+/**
+ * SFTP Stream Wrapper
+ *
+ * Creates an sftp:// protocol handler that can be used with, for example, fopen(), dir(), etc.
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2013 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Net\SFTP;
+
+use phpseclib3\Crypt\Common\PrivateKey;
+use phpseclib3\Net\SFTP;
+use phpseclib3\Net\SSH2;
+
+/**
+ * SFTP Stream Wrapper
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+class Stream
+{
+    /**
+     * SFTP instances
+     *
+     * Rather than re-create the connection we re-use instances if possible
+     *
+     * @var array
+     */
+    public static $instances;
+
+    /**
+     * SFTP instance
+     *
+     * @var object
+     */
+    private $sftp;
+
+    /**
+     * Path
+     *
+     * @var string
+     */
+    private $path;
+
+    /**
+     * Mode
+     *
+     * @var string
+     */
+    private $mode;
+
+    /**
+     * Position
+     *
+     * @var int
+     */
+    private $pos;
+
+    /**
+     * Size
+     *
+     * @var int
+     */
+    private $size;
+
+    /**
+     * Directory entries
+     *
+     * @var array
+     */
+    private $entries;
+
+    /**
+     * EOF flag
+     *
+     * @var bool
+     */
+    private $eof;
+
+    /**
+     * Context resource
+     *
+     * Technically this needs to be publicly accessible so PHP can set it directly
+     *
+     * @var resource
+     */
+    public $context;
+
+    /**
+     * Notification callback function
+     *
+     * @var callable
+     */
+    private $notification;
+
+    /**
+     * Registers this class as a URL wrapper.
+     *
+     * @param string $protocol The wrapper name to be registered.
+     * @return bool True on success, false otherwise.
+     */
+    public static function register($protocol = 'sftp')
+    {
+        if (in_array($protocol, stream_get_wrappers(), true)) {
+            return false;
+        }
+        return stream_wrapper_register($protocol, get_called_class());
+    }
+
+    /**
+     * The Constructor
+     *
+     */
+    public function __construct()
+    {
+        if (defined('NET_SFTP_STREAM_LOGGING')) {
+            echo "__construct()\r\n";
+        }
+    }
+
+    /**
+     * Path Parser
+     *
+     * Extract a path from a URI and actually connect to an SSH server if appropriate
+     *
+     * If "notification" is set as a context parameter the message code for successful login is
+     * NET_SSH2_MSG_USERAUTH_SUCCESS. For a failed login it's NET_SSH2_MSG_USERAUTH_FAILURE.
+     *
+     * @param string $path
+     * @return string
+     */
+    protected function parse_path($path)
+    {
+        $orig = $path;
+        extract(parse_url($path) + ['port' => 22]);
+        if (isset($query)) {
+            $path .= '?' . $query;
+        } elseif (preg_match('/(\?|\?#)$/', $orig)) {
+            $path .= '?';
+        }
+        if (isset($fragment)) {
+            $path .= '#' . $fragment;
+        } elseif ($orig[strlen($orig) - 1] == '#') {
+            $path .= '#';
+        }
+
+        if (!isset($host)) {
+            return false;
+        }
+
+        if (isset($this->context)) {
+            $context = stream_context_get_params($this->context);
+            if (isset($context['notification'])) {
+                $this->notification = $context['notification'];
+            }
+        }
+
+        if (preg_match('/^{[a-z0-9]+}$/i', $host)) {
+            $host = SSH2::getConnectionByResourceId($host);
+            if ($host === false) {
+                return false;
+            }
+            $this->sftp = $host;
+        } else {
+            if (isset($this->context)) {
+                $context = stream_context_get_options($this->context);
+            }
+            if (isset($context[$scheme]['session'])) {
+                $sftp = $context[$scheme]['session'];
+            }
+            if (isset($context[$scheme]['sftp'])) {
+                $sftp = $context[$scheme]['sftp'];
+            }
+            if (isset($sftp) && $sftp instanceof SFTP) {
+                $this->sftp = $sftp;
+                return $path;
+            }
+            if (isset($context[$scheme]['username'])) {
+                $user = $context[$scheme]['username'];
+            }
+            if (isset($context[$scheme]['password'])) {
+                $pass = $context[$scheme]['password'];
+            }
+            if (isset($context[$scheme]['privkey']) && $context[$scheme]['privkey'] instanceof PrivateKey) {
+                $pass = $context[$scheme]['privkey'];
+            }
+
+            if (!isset($user) || !isset($pass)) {
+                return false;
+            }
+
+            // casting $pass to a string is necessary in the event that it's a \phpseclib3\Crypt\RSA object
+            if (isset(self::$instances[$host][$port][$user][(string) $pass])) {
+                $this->sftp = self::$instances[$host][$port][$user][(string) $pass];
+            } else {
+                $this->sftp = new SFTP($host, $port);
+                $this->sftp->disableStatCache();
+                if (isset($this->notification) && is_callable($this->notification)) {
+                    /* if !is_callable($this->notification) we could do this:
+
+                       user_error('fopen(): failed to call user notifier', E_USER_WARNING);
+
+                       the ftp wrapper gives errors like that when the notifier isn't callable.
+                       i've opted not to do that, however, since the ftp wrapper gives the line
+                       on which the fopen occurred as the line number - not the line that the
+                       user_error is on.
+                    */
+                    call_user_func($this->notification, STREAM_NOTIFY_CONNECT, STREAM_NOTIFY_SEVERITY_INFO, '', 0, 0, 0);
+                    call_user_func($this->notification, STREAM_NOTIFY_AUTH_REQUIRED, STREAM_NOTIFY_SEVERITY_INFO, '', 0, 0, 0);
+                    if (!$this->sftp->login($user, $pass)) {
+                        call_user_func($this->notification, STREAM_NOTIFY_AUTH_RESULT, STREAM_NOTIFY_SEVERITY_ERR, 'Login Failure', NET_SSH2_MSG_USERAUTH_FAILURE, 0, 0);
+                        return false;
+                    }
+                    call_user_func($this->notification, STREAM_NOTIFY_AUTH_RESULT, STREAM_NOTIFY_SEVERITY_INFO, 'Login Success', NET_SSH2_MSG_USERAUTH_SUCCESS, 0, 0);
+                } else {
+                    if (!$this->sftp->login($user, $pass)) {
+                        return false;
+                    }
+                }
+                self::$instances[$host][$port][$user][(string) $pass] = $this->sftp;
+            }
+        }
+
+        return $path;
+    }
+
+    /**
+     * Opens file or URL
+     *
+     * @param string $path
+     * @param string $mode
+     * @param int $options
+     * @param string $opened_path
+     * @return bool
+     */
+    private function _stream_open($path, $mode, $options, &$opened_path)
+    {
+        $path = $this->parse_path($path);
+
+        if ($path === false) {
+            return false;
+        }
+        $this->path = $path;
+
+        $this->size = $this->sftp->filesize($path);
+        $this->mode = preg_replace('#[bt]$#', '', $mode);
+        $this->eof = false;
+
+        if ($this->size === false) {
+            if ($this->mode[0] == 'r') {
+                return false;
+            } else {
+                $this->sftp->touch($path);
+                $this->size = 0;
+            }
+        } else {
+            switch ($this->mode[0]) {
+                case 'x':
+                    return false;
+                case 'w':
+                    $this->sftp->truncate($path, 0);
+                    $this->size = 0;
+            }
+        }
+
+        $this->pos = $this->mode[0] != 'a' ? 0 : $this->size;
+
+        return true;
+    }
+
+    /**
+     * Read from stream
+     *
+     * @param int $count
+     * @return mixed
+     */
+    private function _stream_read($count)
+    {
+        switch ($this->mode) {
+            case 'w':
+            case 'a':
+            case 'x':
+            case 'c':
+                return false;
+        }
+
+        // commented out because some files - eg. /dev/urandom - will say their size is 0 when in fact it's kinda infinite
+        //if ($this->pos >= $this->size) {
+        //    $this->eof = true;
+        //    return false;
+        //}
+
+        $result = $this->sftp->get($this->path, false, $this->pos, $count);
+        if (isset($this->notification) && is_callable($this->notification)) {
+            if ($result === false) {
+                call_user_func($this->notification, STREAM_NOTIFY_FAILURE, STREAM_NOTIFY_SEVERITY_ERR, $this->sftp->getLastSFTPError(), NET_SFTP_OPEN, 0, 0);
+                return 0;
+            }
+            // seems that PHP calls stream_read in 8k chunks
+            call_user_func($this->notification, STREAM_NOTIFY_PROGRESS, STREAM_NOTIFY_SEVERITY_INFO, '', 0, strlen($result), $this->size);
+        }
+
+        if (empty($result)) { // ie. false or empty string
+            $this->eof = true;
+            return false;
+        }
+        $this->pos += strlen($result);
+
+        return $result;
+    }
+
+    /**
+     * Write to stream
+     *
+     * @param string $data
+     * @return int|false
+     */
+    private function _stream_write($data)
+    {
+        switch ($this->mode) {
+            case 'r':
+                return false;
+        }
+
+        $result = $this->sftp->put($this->path, $data, SFTP::SOURCE_STRING, $this->pos);
+        if (isset($this->notification) && is_callable($this->notification)) {
+            if (!$result) {
+                call_user_func($this->notification, STREAM_NOTIFY_FAILURE, STREAM_NOTIFY_SEVERITY_ERR, $this->sftp->getLastSFTPError(), NET_SFTP_OPEN, 0, 0);
+                return 0;
+            }
+            // seems that PHP splits up strings into 8k blocks before calling stream_write
+            call_user_func($this->notification, STREAM_NOTIFY_PROGRESS, STREAM_NOTIFY_SEVERITY_INFO, '', 0, strlen($data), strlen($data));
+        }
+
+        if ($result === false) {
+            return false;
+        }
+        $this->pos += strlen($data);
+        if ($this->pos > $this->size) {
+            $this->size = $this->pos;
+        }
+        $this->eof = false;
+        return strlen($data);
+    }
+
+    /**
+     * Retrieve the current position of a stream
+     *
+     * @return int
+     */
+    private function _stream_tell()
+    {
+        return $this->pos;
+    }
+
+    /**
+     * Tests for end-of-file on a file pointer
+     *
+     * In my testing there are four classes functions that normally effect the pointer:
+     * fseek, fputs  / fwrite, fgets / fread and ftruncate.
+     *
+     * Only fgets / fread, however, results in feof() returning true. do fputs($fp, 'aaa') on a blank file and feof()
+     * will return false. do fread($fp, 1) and feof() will then return true. do fseek($fp, 10) on ablank file and feof()
+     * will return false. do fread($fp, 1) and feof() will then return true.
+     *
+     * @return bool
+     */
+    private function _stream_eof()
+    {
+        return $this->eof;
+    }
+
+    /**
+     * Seeks to specific location in a stream
+     *
+     * @param int $offset
+     * @param int $whence
+     * @return bool
+     */
+    private function _stream_seek($offset, $whence)
+    {
+        switch ($whence) {
+            case SEEK_SET:
+                if ($offset < 0) {
+                    return false;
+                }
+                break;
+            case SEEK_CUR:
+                $offset += $this->pos;
+                break;
+            case SEEK_END:
+                $offset += $this->size;
+        }
+
+        $this->pos = $offset;
+        $this->eof = false;
+        return true;
+    }
+
+    /**
+     * Change stream options
+     *
+     * @param string $path
+     * @param int $option
+     * @param mixed $var
+     * @return bool
+     */
+    private function _stream_metadata($path, $option, $var)
+    {
+        $path = $this->parse_path($path);
+        if ($path === false) {
+            return false;
+        }
+
+        // stream_metadata was introduced in PHP 5.4.0 but as of 5.4.11 the constants haven't been defined
+        // see http://www.php.net/streamwrapper.stream-metadata and https://bugs.php.net/64246
+        //     and https://github.com/php/php-src/blob/master/main/php_streams.h#L592
+        switch ($option) {
+            case 1: // PHP_STREAM_META_TOUCH
+                $time = isset($var[0]) ? $var[0] : null;
+                $atime = isset($var[1]) ? $var[1] : null;
+                return $this->sftp->touch($path, $time, $atime);
+            case 2: // PHP_STREAM_OWNER_NAME
+            case 3: // PHP_STREAM_GROUP_NAME
+                return false;
+            case 4: // PHP_STREAM_META_OWNER
+                return $this->sftp->chown($path, $var);
+            case 5: // PHP_STREAM_META_GROUP
+                return $this->sftp->chgrp($path, $var);
+            case 6: // PHP_STREAM_META_ACCESS
+                return $this->sftp->chmod($path, $var) !== false;
+        }
+    }
+
+    /**
+     * Retrieve the underlaying resource
+     *
+     * @param int $cast_as
+     * @return resource
+     */
+    private function _stream_cast($cast_as)
+    {
+        return $this->sftp->fsock;
+    }
+
+    /**
+     * Advisory file locking
+     *
+     * @param int $operation
+     * @return bool
+     */
+    private function _stream_lock($operation)
+    {
+        return false;
+    }
+
+    /**
+     * Renames a file or directory
+     *
+     * Attempts to rename oldname to newname, moving it between directories if necessary.
+     * If newname exists, it will be overwritten.  This is a departure from what \phpseclib3\Net\SFTP
+     * does.
+     *
+     * @param string $path_from
+     * @param string $path_to
+     * @return bool
+     */
+    private function _rename($path_from, $path_to)
+    {
+        $path1 = parse_url($path_from);
+        $path2 = parse_url($path_to);
+        unset($path1['path'], $path2['path']);
+        if ($path1 != $path2) {
+            return false;
+        }
+
+        $path_from = $this->parse_path($path_from);
+        $path_to = parse_url($path_to);
+        if ($path_from === false) {
+            return false;
+        }
+
+        $path_to = $path_to['path']; // the $component part of parse_url() was added in PHP 5.1.2
+        // "It is an error if there already exists a file with the name specified by newpath."
+        //  -- http://tools.ietf.org/html/draft-ietf-secsh-filexfer-02#section-6.5
+        if (!$this->sftp->rename($path_from, $path_to)) {
+            if ($this->sftp->stat($path_to)) {
+                return $this->sftp->delete($path_to, true) && $this->sftp->rename($path_from, $path_to);
+            }
+            return false;
+        }
+
+        return true;
+    }
+
+    /**
+     * Open directory handle
+     *
+     * The only $options is "whether or not to enforce safe_mode (0x04)". Since safe mode was deprecated in 5.3 and
+     * removed in 5.4 I'm just going to ignore it.
+     *
+     * Also, nlist() is the best that this function is realistically going to be able to do. When an SFTP client
+     * sends a SSH_FXP_READDIR packet you don't generally get info on just one file but on multiple files. Quoting
+     * the SFTP specs:
+     *
+     *    The SSH_FXP_NAME response has the following format:
+     *
+     *        uint32     id
+     *        uint32     count
+     *        repeats count times:
+     *                string     filename
+     *                string     longname
+     *                ATTRS      attrs
+     *
+     * @param string $path
+     * @param int $options
+     * @return bool
+     */
+    private function _dir_opendir($path, $options)
+    {
+        $path = $this->parse_path($path);
+        if ($path === false) {
+            return false;
+        }
+        $this->pos = 0;
+        $this->entries = $this->sftp->nlist($path);
+        return $this->entries !== false;
+    }
+
+    /**
+     * Read entry from directory handle
+     *
+     * @return mixed
+     */
+    private function _dir_readdir()
+    {
+        if (isset($this->entries[$this->pos])) {
+            return $this->entries[$this->pos++];
+        }
+        return false;
+    }
+
+    /**
+     * Rewind directory handle
+     *
+     * @return bool
+     */
+    private function _dir_rewinddir()
+    {
+        $this->pos = 0;
+        return true;
+    }
+
+    /**
+     * Close directory handle
+     *
+     * @return bool
+     */
+    private function _dir_closedir()
+    {
+        return true;
+    }
+
+    /**
+     * Create a directory
+     *
+     * Only valid $options is STREAM_MKDIR_RECURSIVE
+     *
+     * @param string $path
+     * @param int $mode
+     * @param int $options
+     * @return bool
+     */
+    private function _mkdir($path, $mode, $options)
+    {
+        $path = $this->parse_path($path);
+        if ($path === false) {
+            return false;
+        }
+
+        return $this->sftp->mkdir($path, $mode, $options & STREAM_MKDIR_RECURSIVE);
+    }
+
+    /**
+     * Removes a directory
+     *
+     * Only valid $options is STREAM_MKDIR_RECURSIVE per <http://php.net/streamwrapper.rmdir>, however,
+     * <http://php.net/rmdir>  does not have a $recursive parameter as mkdir() does so I don't know how
+     * STREAM_MKDIR_RECURSIVE is supposed to be set. Also, when I try it out with rmdir() I get 8 as
+     * $options. What does 8 correspond to?
+     *
+     * @param string $path
+     * @param int $options
+     * @return bool
+     */
+    private function _rmdir($path, $options)
+    {
+        $path = $this->parse_path($path);
+        if ($path === false) {
+            return false;
+        }
+
+        return $this->sftp->rmdir($path);
+    }
+
+    /**
+     * Flushes the output
+     *
+     * See <http://php.net/fflush>. Always returns true because \phpseclib3\Net\SFTP doesn't cache stuff before writing
+     *
+     * @return bool
+     */
+    private function _stream_flush()
+    {
+        return true;
+    }
+
+    /**
+     * Retrieve information about a file resource
+     *
+     * @return mixed
+     */
+    private function _stream_stat()
+    {
+        $results = $this->sftp->stat($this->path);
+        if ($results === false) {
+            return false;
+        }
+        return $results;
+    }
+
+    /**
+     * Delete a file
+     *
+     * @param string $path
+     * @return bool
+     */
+    private function _unlink($path)
+    {
+        $path = $this->parse_path($path);
+        if ($path === false) {
+            return false;
+        }
+
+        return $this->sftp->delete($path, false);
+    }
+
+    /**
+     * Retrieve information about a file
+     *
+     * Ignores the STREAM_URL_STAT_QUIET flag because the entirety of \phpseclib3\Net\SFTP\Stream is quiet by default
+     * might be worthwhile to reconstruct bits 12-16 (ie. the file type) if mode doesn't have them but we'll
+     * cross that bridge when and if it's reached
+     *
+     * @param string $path
+     * @param int $flags
+     * @return mixed
+     */
+    private function _url_stat($path, $flags)
+    {
+        $path = $this->parse_path($path);
+        if ($path === false) {
+            return false;
+        }
+
+        $results = $flags & STREAM_URL_STAT_LINK ? $this->sftp->lstat($path) : $this->sftp->stat($path);
+        if ($results === false) {
+            return false;
+        }
+
+        return $results;
+    }
+
+    /**
+     * Truncate stream
+     *
+     * @param int $new_size
+     * @return bool
+     */
+    private function _stream_truncate($new_size)
+    {
+        if (!$this->sftp->truncate($this->path, $new_size)) {
+            return false;
+        }
+
+        $this->eof = false;
+        $this->size = $new_size;
+
+        return true;
+    }
+
+    /**
+     * Change stream options
+     *
+     * STREAM_OPTION_WRITE_BUFFER isn't supported for the same reason stream_flush isn't.
+     * The other two aren't supported because of limitations in \phpseclib3\Net\SFTP.
+     *
+     * @param int $option
+     * @param int $arg1
+     * @param int $arg2
+     * @return bool
+     */
+    private function _stream_set_option($option, $arg1, $arg2)
+    {
+        return false;
+    }
+
+    /**
+     * Close an resource
+     *
+     */
+    private function _stream_close()
+    {
+    }
+
+    /**
+     * __call Magic Method
+     *
+     * When you're utilizing an SFTP stream you're not calling the methods in this class directly - PHP is calling them for you.
+     * Which kinda begs the question... what methods is PHP calling and what parameters is it passing to them? This function
+     * lets you figure that out.
+     *
+     * If NET_SFTP_STREAM_LOGGING is defined all calls will be output on the screen and then (regardless of whether or not
+     * NET_SFTP_STREAM_LOGGING is enabled) the parameters will be passed through to the appropriate method.
+     *
+     * @param string $name
+     * @param array $arguments
+     * @return mixed
+     */
+    public function __call($name, array $arguments)
+    {
+        if (defined('NET_SFTP_STREAM_LOGGING')) {
+            echo $name . '(';
+            $last = count($arguments) - 1;
+            foreach ($arguments as $i => $argument) {
+                var_export($argument);
+                if ($i != $last) {
+                    echo ',';
+                }
+            }
+            echo ")\r\n";
+        }
+        $name = '_' . $name;
+        if (!method_exists($this, $name)) {
+            return false;
+        }
+        return $this->$name(...$arguments);
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Net/SSH2.php b/vendor/phpseclib/phpseclib/phpseclib/Net/SSH2.php
new file mode 100644
index 0000000..eee2e10
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Net/SSH2.php
@@ -0,0 +1,5436 @@
+<?php
+
+/**
+ * Pure-PHP implementation of SSHv2.
+ *
+ * PHP version 5
+ *
+ * Here are some examples of how to use this library:
+ * <code>
+ * <?php
+ *    include 'vendor/autoload.php';
+ *
+ *    $ssh = new \phpseclib3\Net\SSH2('www.domain.tld');
+ *    if (!$ssh->login('username', 'password')) {
+ *        exit('Login Failed');
+ *    }
+ *
+ *    echo $ssh->exec('pwd');
+ *    echo $ssh->exec('ls -la');
+ * ?>
+ * </code>
+ *
+ * <code>
+ * <?php
+ *    include 'vendor/autoload.php';
+ *
+ *    $key = \phpseclib3\Crypt\PublicKeyLoader::load('...', '(optional) password');
+ *
+ *    $ssh = new \phpseclib3\Net\SSH2('www.domain.tld');
+ *    if (!$ssh->login('username', $key)) {
+ *        exit('Login Failed');
+ *    }
+ *
+ *    echo $ssh->read('username@username:~$');
+ *    $ssh->write("ls -la\n");
+ *    echo $ssh->read('username@username:~$');
+ * ?>
+ * </code>
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2007 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Net;
+
+use phpseclib3\Common\Functions\Strings;
+use phpseclib3\Crypt\Blowfish;
+use phpseclib3\Crypt\ChaCha20;
+use phpseclib3\Crypt\Common\AsymmetricKey;
+use phpseclib3\Crypt\Common\PrivateKey;
+use phpseclib3\Crypt\Common\PublicKey;
+use phpseclib3\Crypt\Common\SymmetricKey;
+use phpseclib3\Crypt\DH;
+use phpseclib3\Crypt\DSA;
+use phpseclib3\Crypt\EC;
+use phpseclib3\Crypt\Hash;
+use phpseclib3\Crypt\Random;
+use phpseclib3\Crypt\RC4;
+use phpseclib3\Crypt\Rijndael;
+use phpseclib3\Crypt\RSA;
+use phpseclib3\Crypt\TripleDES; // Used to do Diffie-Hellman key exchange and DSA/RSA signature verification.
+use phpseclib3\Crypt\Twofish;
+use phpseclib3\Exception\ConnectionClosedException;
+use phpseclib3\Exception\InsufficientSetupException;
+use phpseclib3\Exception\NoSupportedAlgorithmsException;
+use phpseclib3\Exception\UnableToConnectException;
+use phpseclib3\Exception\UnsupportedAlgorithmException;
+use phpseclib3\Exception\UnsupportedCurveException;
+use phpseclib3\Math\BigInteger;
+use phpseclib3\System\SSH\Agent;
+
+/**
+ * Pure-PHP implementation of SSHv2.
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+class SSH2
+{
+    /**#@+
+     * Compression Types
+     *
+     */
+    /**
+     * No compression
+     */
+    const NET_SSH2_COMPRESSION_NONE = 1;
+    /**
+     * zlib compression
+     */
+    const NET_SSH2_COMPRESSION_ZLIB = 2;
+    /**
+     * zlib@openssh.com
+     */
+    const NET_SSH2_COMPRESSION_ZLIB_AT_OPENSSH = 3;
+    /**#@-*/
+
+    // Execution Bitmap Masks
+    const MASK_CONSTRUCTOR   = 0x00000001;
+    const MASK_CONNECTED     = 0x00000002;
+    const MASK_LOGIN_REQ     = 0x00000004;
+    const MASK_LOGIN         = 0x00000008;
+    const MASK_SHELL         = 0x00000010;
+    const MASK_WINDOW_ADJUST = 0x00000020;
+
+    /*
+     * Channel constants
+     *
+     * RFC4254 refers not to client and server channels but rather to sender and recipient channels.  we don't refer
+     * to them in that way because RFC4254 toggles the meaning. the client sends a SSH_MSG_CHANNEL_OPEN message with
+     * a sender channel and the server sends a SSH_MSG_CHANNEL_OPEN_CONFIRMATION in response, with a sender and a
+     * recipient channel.  at first glance, you might conclude that SSH_MSG_CHANNEL_OPEN_CONFIRMATION's sender channel
+     * would be the same thing as SSH_MSG_CHANNEL_OPEN's sender channel, but it's not, per this snippet:
+     *     The 'recipient channel' is the channel number given in the original
+     *     open request, and 'sender channel' is the channel number allocated by
+     *     the other side.
+     *
+     * @see \phpseclib3\Net\SSH2::send_channel_packet()
+     * @see \phpseclib3\Net\SSH2::get_channel_packet()
+     */
+    const CHANNEL_EXEC          = 1; // PuTTy uses 0x100
+    const CHANNEL_SHELL         = 2;
+    const CHANNEL_SUBSYSTEM     = 3;
+    const CHANNEL_AGENT_FORWARD = 4;
+    const CHANNEL_KEEP_ALIVE    = 5;
+
+    /**
+     * Returns the message numbers
+     *
+     * @see \phpseclib3\Net\SSH2::getLog()
+     */
+    const LOG_SIMPLE = 1;
+    /**
+     * Returns the message content
+     *
+     * @see \phpseclib3\Net\SSH2::getLog()
+     */
+    const LOG_COMPLEX = 2;
+    /**
+     * Outputs the content real-time
+     */
+    const LOG_REALTIME = 3;
+    /**
+     * Dumps the content real-time to a file
+     */
+    const LOG_REALTIME_FILE = 4;
+    /**
+     * Outputs the message numbers real-time
+     */
+    const LOG_SIMPLE_REALTIME = 5;
+    /**
+     * Make sure that the log never gets larger than this
+     *
+     * @see \phpseclib3\Net\SSH2::getLog()
+     */
+    const LOG_MAX_SIZE = 1048576; // 1024 * 1024
+
+    /**
+     * Returns when a string matching $expect exactly is found
+     *
+     * @see \phpseclib3\Net\SSH2::read()
+     */
+    const READ_SIMPLE = 1;
+    /**
+     * Returns when a string matching the regular expression $expect is found
+     *
+     * @see \phpseclib3\Net\SSH2::read()
+     */
+    const READ_REGEX = 2;
+    /**
+     * Returns whenever a data packet is received.
+     *
+     * Some data packets may only contain a single character so it may be necessary
+     * to call read() multiple times when using this option
+     *
+     * @see \phpseclib3\Net\SSH2::read()
+     */
+    const READ_NEXT = 3;
+
+    /**
+     * The SSH identifier
+     *
+     * @var string
+     */
+    private $identifier;
+
+    /**
+     * The Socket Object
+     *
+     * @var resource|closed-resource|null
+     */
+    public $fsock;
+
+    /**
+     * Execution Bitmap
+     *
+     * The bits that are set represent functions that have been called already.  This is used to determine
+     * if a requisite function has been successfully executed.  If not, an error should be thrown.
+     *
+     * @var int
+     */
+    protected $bitmap = 0;
+
+    /**
+     * Error information
+     *
+     * @see self::getErrors()
+     * @see self::getLastError()
+     * @var array
+     */
+    private $errors = [];
+
+    /**
+     * Server Identifier
+     *
+     * @see self::getServerIdentification()
+     * @var string|false
+     */
+    protected $server_identifier = false;
+
+    /**
+     * Key Exchange Algorithms
+     *
+     * @see self::getKexAlgorithims()
+     * @var array|false
+     */
+    private $kex_algorithms = false;
+
+    /**
+     * Key Exchange Algorithm
+     *
+     * @see self::getMethodsNegotiated()
+     * @var string|false
+     */
+    private $kex_algorithm = false;
+
+    /**
+     * Minimum Diffie-Hellman Group Bit Size in RFC 4419 Key Exchange Methods
+     *
+     * @see self::_key_exchange()
+     * @var int
+     */
+    private $kex_dh_group_size_min = 1536;
+
+    /**
+     * Preferred Diffie-Hellman Group Bit Size in RFC 4419 Key Exchange Methods
+     *
+     * @see self::_key_exchange()
+     * @var int
+     */
+    private $kex_dh_group_size_preferred = 2048;
+
+    /**
+     * Maximum Diffie-Hellman Group Bit Size in RFC 4419 Key Exchange Methods
+     *
+     * @see self::_key_exchange()
+     * @var int
+     */
+    private $kex_dh_group_size_max = 4096;
+
+    /**
+     * Server Host Key Algorithms
+     *
+     * @see self::getServerHostKeyAlgorithms()
+     * @var array|false
+     */
+    private $server_host_key_algorithms = false;
+
+    /**
+     * Supported Private Key Algorithms
+     *
+     * In theory this should be the same as the Server Host Key Algorithms but, in practice,
+     * some servers (eg. Azure) will support rsa-sha2-512 as a server host key algorithm but
+     * not a private key algorithm
+     *
+     * @see self::privatekey_login()
+     * @var array|false
+     */
+    private $supported_private_key_algorithms = false;
+
+    /**
+     * Encryption Algorithms: Client to Server
+     *
+     * @see self::getEncryptionAlgorithmsClient2Server()
+     * @var array|false
+     */
+    private $encryption_algorithms_client_to_server = false;
+
+    /**
+     * Encryption Algorithms: Server to Client
+     *
+     * @see self::getEncryptionAlgorithmsServer2Client()
+     * @var array|false
+     */
+    private $encryption_algorithms_server_to_client = false;
+
+    /**
+     * MAC Algorithms: Client to Server
+     *
+     * @see self::getMACAlgorithmsClient2Server()
+     * @var array|false
+     */
+    private $mac_algorithms_client_to_server = false;
+
+    /**
+     * MAC Algorithms: Server to Client
+     *
+     * @see self::getMACAlgorithmsServer2Client()
+     * @var array|false
+     */
+    private $mac_algorithms_server_to_client = false;
+
+    /**
+     * Compression Algorithms: Client to Server
+     *
+     * @see self::getCompressionAlgorithmsClient2Server()
+     * @var array|false
+     */
+    private $compression_algorithms_client_to_server = false;
+
+    /**
+     * Compression Algorithms: Server to Client
+     *
+     * @see self::getCompressionAlgorithmsServer2Client()
+     * @var array|false
+     */
+    private $compression_algorithms_server_to_client = false;
+
+    /**
+     * Languages: Server to Client
+     *
+     * @see self::getLanguagesServer2Client()
+     * @var array|false
+     */
+    private $languages_server_to_client = false;
+
+    /**
+     * Languages: Client to Server
+     *
+     * @see self::getLanguagesClient2Server()
+     * @var array|false
+     */
+    private $languages_client_to_server = false;
+
+    /**
+     * Preferred Algorithms
+     *
+     * @see self::setPreferredAlgorithms()
+     * @var array
+     */
+    private $preferred = [];
+
+    /**
+     * Block Size for Server to Client Encryption
+     *
+     * "Note that the length of the concatenation of 'packet_length',
+     *  'padding_length', 'payload', and 'random padding' MUST be a multiple
+     *  of the cipher block size or 8, whichever is larger.  This constraint
+     *  MUST be enforced, even when using stream ciphers."
+     *
+     *  -- http://tools.ietf.org/html/rfc4253#section-6
+     *
+     * @see self::__construct()
+     * @see self::_send_binary_packet()
+     * @var int
+     */
+    private $encrypt_block_size = 8;
+
+    /**
+     * Block Size for Client to Server Encryption
+     *
+     * @see self::__construct()
+     * @see self::_get_binary_packet()
+     * @var int
+     */
+    private $decrypt_block_size = 8;
+
+    /**
+     * Server to Client Encryption Object
+     *
+     * @see self::_get_binary_packet()
+     * @var SymmetricKey|false
+     */
+    private $decrypt = false;
+
+    /**
+     * Decryption Algorithm Name
+     *
+     * @var string|null
+     */
+    private $decryptName;
+
+    /**
+     * Decryption Invocation Counter
+     *
+     * Used by GCM
+     *
+     * @var string|null
+     */
+    private $decryptInvocationCounter;
+
+    /**
+     * Fixed Part of Nonce
+     *
+     * Used by GCM
+     *
+     * @var string|null
+     */
+    private $decryptFixedPart;
+
+    /**
+     * Server to Client Length Encryption Object
+     *
+     * @see self::_get_binary_packet()
+     * @var object
+     */
+    private $lengthDecrypt = false;
+
+    /**
+     * Client to Server Encryption Object
+     *
+     * @see self::_send_binary_packet()
+     * @var SymmetricKey|false
+     */
+    private $encrypt = false;
+
+    /**
+     * Encryption Algorithm Name
+     *
+     * @var string|null
+     */
+    private $encryptName;
+
+    /**
+     * Encryption Invocation Counter
+     *
+     * Used by GCM
+     *
+     * @var string|null
+     */
+    private $encryptInvocationCounter;
+
+    /**
+     * Fixed Part of Nonce
+     *
+     * Used by GCM
+     *
+     * @var string|null
+     */
+    private $encryptFixedPart;
+
+    /**
+     * Client to Server Length Encryption Object
+     *
+     * @see self::_send_binary_packet()
+     * @var object
+     */
+    private $lengthEncrypt = false;
+
+    /**
+     * Client to Server HMAC Object
+     *
+     * @see self::_send_binary_packet()
+     * @var object
+     */
+    private $hmac_create = false;
+
+    /**
+     * Client to Server HMAC Name
+     *
+     * @var string|false
+     */
+    private $hmac_create_name;
+
+    /**
+     * Client to Server ETM
+     *
+     * @var int|false
+     */
+    private $hmac_create_etm;
+
+    /**
+     * Server to Client HMAC Object
+     *
+     * @see self::_get_binary_packet()
+     * @var object
+     */
+    private $hmac_check = false;
+
+    /**
+     * Server to Client HMAC Name
+     *
+     * @var string|false
+     */
+    private $hmac_check_name;
+
+    /**
+     * Server to Client ETM
+     *
+     * @var int|false
+     */
+    private $hmac_check_etm;
+
+    /**
+     * Size of server to client HMAC
+     *
+     * We need to know how big the HMAC will be for the server to client direction so that we know how many bytes to read.
+     * For the client to server side, the HMAC object will make the HMAC as long as it needs to be.  All we need to do is
+     * append it.
+     *
+     * @see self::_get_binary_packet()
+     * @var int
+     */
+    private $hmac_size = false;
+
+    /**
+     * Server Public Host Key
+     *
+     * @see self::getServerPublicHostKey()
+     * @var string
+     */
+    private $server_public_host_key;
+
+    /**
+     * Session identifier
+     *
+     * "The exchange hash H from the first key exchange is additionally
+     *  used as the session identifier, which is a unique identifier for
+     *  this connection."
+     *
+     *  -- http://tools.ietf.org/html/rfc4253#section-7.2
+     *
+     * @see self::_key_exchange()
+     * @var string
+     */
+    private $session_id = false;
+
+    /**
+     * Exchange hash
+     *
+     * The current exchange hash
+     *
+     * @see self::_key_exchange()
+     * @var string
+     */
+    private $exchange_hash = false;
+
+    /**
+     * Message Numbers
+     *
+     * @see self::__construct()
+     * @var array
+     * @access private
+     */
+    private static $message_numbers = [];
+
+    /**
+     * Disconnection Message 'reason codes' defined in RFC4253
+     *
+     * @see self::__construct()
+     * @var array
+     * @access private
+     */
+    private static $disconnect_reasons = [];
+
+    /**
+     * SSH_MSG_CHANNEL_OPEN_FAILURE 'reason codes', defined in RFC4254
+     *
+     * @see self::__construct()
+     * @var array
+     * @access private
+     */
+    private static $channel_open_failure_reasons = [];
+
+    /**
+     * Terminal Modes
+     *
+     * @link http://tools.ietf.org/html/rfc4254#section-8
+     * @see self::__construct()
+     * @var array
+     * @access private
+     */
+    private static $terminal_modes = [];
+
+    /**
+     * SSH_MSG_CHANNEL_EXTENDED_DATA's data_type_codes
+     *
+     * @link http://tools.ietf.org/html/rfc4254#section-5.2
+     * @see self::__construct()
+     * @var array
+     * @access private
+     */
+    private static $channel_extended_data_type_codes = [];
+
+    /**
+     * Send Sequence Number
+     *
+     * See 'Section 6.4.  Data Integrity' of rfc4253 for more info.
+     *
+     * @see self::_send_binary_packet()
+     * @var int
+     */
+    private $send_seq_no = 0;
+
+    /**
+     * Get Sequence Number
+     *
+     * See 'Section 6.4.  Data Integrity' of rfc4253 for more info.
+     *
+     * @see self::_get_binary_packet()
+     * @var int
+     */
+    private $get_seq_no = 0;
+
+    /**
+     * Server Channels
+     *
+     * Maps client channels to server channels
+     *
+     * @see self::get_channel_packet()
+     * @see self::exec()
+     * @var array
+     */
+    protected $server_channels = [];
+
+    /**
+     * Channel Buffers
+     *
+     * If a client requests a packet from one channel but receives two packets from another those packets should
+     * be placed in a buffer
+     *
+     * @see self::get_channel_packet()
+     * @see self::exec()
+     * @var array
+     */
+    private $channel_buffers = [];
+
+    /**
+     * Channel Status
+     *
+     * Contains the type of the last sent message
+     *
+     * @see self::get_channel_packet()
+     * @var array
+     */
+    protected $channel_status = [];
+
+    /**
+     * The identifier of the interactive channel which was opened most recently
+     *
+     * @see self::getInteractiveChannelId()
+     * @var int
+     */
+    private $channel_id_last_interactive = 0;
+
+    /**
+     * Packet Size
+     *
+     * Maximum packet size indexed by channel
+     *
+     * @see self::send_channel_packet()
+     * @var array
+     */
+    private $packet_size_client_to_server = [];
+
+    /**
+     * Message Number Log
+     *
+     * @see self::getLog()
+     * @var array
+     */
+    private $message_number_log = [];
+
+    /**
+     * Message Log
+     *
+     * @see self::getLog()
+     * @var array
+     */
+    private $message_log = [];
+
+    /**
+     * The Window Size
+     *
+     * Bytes the other party can send before it must wait for the window to be adjusted (0x7FFFFFFF = 2GB)
+     *
+     * @var int
+     * @see self::send_channel_packet()
+     * @see self::exec()
+     */
+    protected $window_size = 0x7FFFFFFF;
+
+    /**
+     * What we resize the window to
+     *
+     * When PuTTY resizes the window it doesn't add an additional 0x7FFFFFFF bytes - it adds 0x40000000 bytes.
+     * Some SFTP clients (GoAnywhere) don't support adding 0x7FFFFFFF to the window size after the fact so
+     * we'll just do what PuTTY does
+     *
+     * @var int
+     * @see self::_send_channel_packet()
+     * @see self::exec()
+     */
+    private $window_resize = 0x40000000;
+
+    /**
+     * Window size, server to client
+     *
+     * Window size indexed by channel
+     *
+     * @see self::send_channel_packet()
+     * @var array
+     */
+    protected $window_size_server_to_client = [];
+
+    /**
+     * Window size, client to server
+     *
+     * Window size indexed by channel
+     *
+     * @see self::get_channel_packet()
+     * @var array
+     */
+    private $window_size_client_to_server = [];
+
+    /**
+     * Server signature
+     *
+     * Verified against $this->session_id
+     *
+     * @see self::getServerPublicHostKey()
+     * @var string
+     */
+    private $signature = '';
+
+    /**
+     * Server signature format
+     *
+     * ssh-rsa or ssh-dss.
+     *
+     * @see self::getServerPublicHostKey()
+     * @var string
+     */
+    private $signature_format = '';
+
+    /**
+     * Interactive Buffer
+     *
+     * @see self::read()
+     * @var string
+     */
+    private $interactiveBuffer = '';
+
+    /**
+     * Current log size
+     *
+     * Should never exceed self::LOG_MAX_SIZE
+     *
+     * @see self::_send_binary_packet()
+     * @see self::_get_binary_packet()
+     * @var int
+     */
+    private $log_size;
+
+    /**
+     * Timeout
+     *
+     * @see self::setTimeout()
+     */
+    protected $timeout;
+
+    /**
+     * Current Timeout
+     *
+     * @see self::get_channel_packet()
+     */
+    protected $curTimeout;
+
+    /**
+     * Keep Alive Interval
+     *
+     * @see self::setKeepAlive()
+     */
+    private $keepAlive;
+
+    /**
+     * Real-time log file pointer
+     *
+     * @see self::_append_log()
+     * @var resource|closed-resource
+     */
+    private $realtime_log_file;
+
+    /**
+     * Real-time log file size
+     *
+     * @see self::_append_log()
+     * @var int
+     */
+    private $realtime_log_size;
+
+    /**
+     * Has the signature been validated?
+     *
+     * @see self::getServerPublicHostKey()
+     * @var bool
+     */
+    private $signature_validated = false;
+
+    /**
+     * Real-time log file wrap boolean
+     *
+     * @see self::_append_log()
+     * @var bool
+     */
+    private $realtime_log_wrap;
+
+    /**
+     * Flag to suppress stderr from output
+     *
+     * @see self::enableQuietMode()
+     */
+    private $quiet_mode = false;
+
+    /**
+     * Time of first network activity
+     *
+     * @var float
+     */
+    private $last_packet;
+
+    /**
+     * Exit status returned from ssh if any
+     *
+     * @var int
+     */
+    private $exit_status;
+
+    /**
+     * Flag to request a PTY when using exec()
+     *
+     * @var bool
+     * @see self::enablePTY()
+     */
+    private $request_pty = false;
+
+    /**
+     * Contents of stdError
+     *
+     * @var string
+     */
+    private $stdErrorLog;
+
+    /**
+     * The Last Interactive Response
+     *
+     * @see self::_keyboard_interactive_process()
+     * @var string
+     */
+    private $last_interactive_response = '';
+
+    /**
+     * Keyboard Interactive Request / Responses
+     *
+     * @see self::_keyboard_interactive_process()
+     * @var array
+     */
+    private $keyboard_requests_responses = [];
+
+    /**
+     * Banner Message
+     *
+     * Quoting from the RFC, "in some jurisdictions, sending a warning message before
+     * authentication may be relevant for getting legal protection."
+     *
+     * @see self::_filter()
+     * @see self::getBannerMessage()
+     * @var string
+     */
+    private $banner_message = '';
+
+    /**
+     * Did read() timeout or return normally?
+     *
+     * @see self::isTimeout()
+     * @var bool
+     */
+    private $is_timeout = false;
+
+    /**
+     * Log Boundary
+     *
+     * @see self::_format_log()
+     * @var string
+     */
+    private $log_boundary = ':';
+
+    /**
+     * Log Long Width
+     *
+     * @see self::_format_log()
+     * @var int
+     */
+    private $log_long_width = 65;
+
+    /**
+     * Log Short Width
+     *
+     * @see self::_format_log()
+     * @var int
+     */
+    private $log_short_width = 16;
+
+    /**
+     * Hostname
+     *
+     * @see self::__construct()
+     * @see self::_connect()
+     * @var string
+     */
+    private $host;
+
+    /**
+     * Port Number
+     *
+     * @see self::__construct()
+     * @see self::_connect()
+     * @var int
+     */
+    private $port;
+
+    /**
+     * Number of columns for terminal window size
+     *
+     * @see self::getWindowColumns()
+     * @see self::setWindowColumns()
+     * @see self::setWindowSize()
+     * @var int
+     */
+    private $windowColumns = 80;
+
+    /**
+     * Number of columns for terminal window size
+     *
+     * @see self::getWindowRows()
+     * @see self::setWindowRows()
+     * @see self::setWindowSize()
+     * @var int
+     */
+    private $windowRows = 24;
+
+    /**
+     * Crypto Engine
+     *
+     * @see self::setCryptoEngine()
+     * @see self::_key_exchange()
+     * @var int
+     */
+    private static $crypto_engine = false;
+
+    /**
+     * A System_SSH_Agent for use in the SSH2 Agent Forwarding scenario
+     *
+     * @var Agent
+     */
+    private $agent;
+
+    /**
+     * Connection storage to replicates ssh2 extension functionality:
+     * {@link http://php.net/manual/en/wrappers.ssh2.php#refsect1-wrappers.ssh2-examples}
+     *
+     * @var array<string, SSH2|\WeakReference<SSH2>>
+     */
+    private static $connections;
+
+    /**
+     * Send the identification string first?
+     *
+     * @var bool
+     */
+    private $send_id_string_first = true;
+
+    /**
+     * Send the key exchange initiation packet first?
+     *
+     * @var bool
+     */
+    private $send_kex_first = true;
+
+    /**
+     * Some versions of OpenSSH incorrectly calculate the key size
+     *
+     * @var bool
+     */
+    private $bad_key_size_fix = false;
+
+    /**
+     * Should we try to re-connect to re-establish keys?
+     *
+     * @var bool
+     */
+    private $retry_connect = false;
+
+    /**
+     * Binary Packet Buffer
+     *
+     * @var string|false
+     */
+    private $binary_packet_buffer = false;
+
+    /**
+     * Preferred Signature Format
+     *
+     * @var string|false
+     */
+    protected $preferred_signature_format = false;
+
+    /**
+     * Authentication Credentials
+     *
+     * @var array
+     */
+    protected $auth = [];
+
+    /**
+     * Terminal
+     *
+     * @var string
+     */
+    private $term = 'vt100';
+
+    /**
+     * The authentication methods that may productively continue authentication.
+     *
+     * @see https://tools.ietf.org/html/rfc4252#section-5.1
+     * @var array|null
+     */
+    private $auth_methods_to_continue = null;
+
+    /**
+     * Compression method
+     *
+     * @var int
+     */
+    private $compress = self::NET_SSH2_COMPRESSION_NONE;
+
+    /**
+     * Decompression method
+     *
+     * @var int
+     */
+    private $decompress = self::NET_SSH2_COMPRESSION_NONE;
+
+    /**
+     * Compression context
+     *
+     * @var resource|false|null
+     */
+    private $compress_context;
+
+    /**
+     * Decompression context
+     *
+     * @var resource|object
+     */
+    private $decompress_context;
+
+    /**
+     * Regenerate Compression Context
+     *
+     * @var bool
+     */
+    private $regenerate_compression_context = false;
+
+    /**
+     * Regenerate Decompression Context
+     *
+     * @var bool
+     */
+    private $regenerate_decompression_context = false;
+
+    /**
+     * Smart multi-factor authentication flag
+     *
+     * @var bool
+     */
+    private $smartMFA = true;
+
+    /**
+     * How many channels are currently opened
+     *
+     * @var int
+     */
+    private $channelCount = 0;
+
+    /**
+     * Does the server support multiple channels? If not then error out
+     * when multiple channels are attempted to be opened
+     *
+     * @var bool
+     */
+    private $errorOnMultipleChannels;
+
+    /**
+     * Terrapin Countermeasure
+     *
+     * "During initial KEX, terminate the connection if any unexpected or out-of-sequence packet is received"
+     * -- https://github.com/openssh/openssh-portable/commit/1edb00c58f8a6875fad6a497aa2bacf37f9e6cd5
+     *
+     * @var int
+     */
+    private $extra_packets;
+
+    /**
+     * Default Constructor.
+     *
+     * $host can either be a string, representing the host, or a stream resource.
+     * If $host is a stream resource then $port doesn't do anything, altho $timeout
+     * still will be used
+     *
+     * @param mixed $host
+     * @param int $port
+     * @param int $timeout
+     * @see self::login()
+     */
+    public function __construct($host, $port = 22, $timeout = 10)
+    {
+        if (empty(self::$message_numbers)) {
+            self::$message_numbers = [
+                1 => 'NET_SSH2_MSG_DISCONNECT',
+                2 => 'NET_SSH2_MSG_IGNORE',
+                3 => 'NET_SSH2_MSG_UNIMPLEMENTED',
+                4 => 'NET_SSH2_MSG_DEBUG',
+                5 => 'NET_SSH2_MSG_SERVICE_REQUEST',
+                6 => 'NET_SSH2_MSG_SERVICE_ACCEPT',
+                7 => 'NET_SSH2_MSG_EXT_INFO', // RFC 8308
+                20 => 'NET_SSH2_MSG_KEXINIT',
+                21 => 'NET_SSH2_MSG_NEWKEYS',
+                30 => 'NET_SSH2_MSG_KEXDH_INIT',
+                31 => 'NET_SSH2_MSG_KEXDH_REPLY',
+                50 => 'NET_SSH2_MSG_USERAUTH_REQUEST',
+                51 => 'NET_SSH2_MSG_USERAUTH_FAILURE',
+                52 => 'NET_SSH2_MSG_USERAUTH_SUCCESS',
+                53 => 'NET_SSH2_MSG_USERAUTH_BANNER',
+
+                80 => 'NET_SSH2_MSG_GLOBAL_REQUEST',
+                81 => 'NET_SSH2_MSG_REQUEST_SUCCESS',
+                82 => 'NET_SSH2_MSG_REQUEST_FAILURE',
+                90 => 'NET_SSH2_MSG_CHANNEL_OPEN',
+                91 => 'NET_SSH2_MSG_CHANNEL_OPEN_CONFIRMATION',
+                92 => 'NET_SSH2_MSG_CHANNEL_OPEN_FAILURE',
+                93 => 'NET_SSH2_MSG_CHANNEL_WINDOW_ADJUST',
+                94 => 'NET_SSH2_MSG_CHANNEL_DATA',
+                95 => 'NET_SSH2_MSG_CHANNEL_EXTENDED_DATA',
+                96 => 'NET_SSH2_MSG_CHANNEL_EOF',
+                97 => 'NET_SSH2_MSG_CHANNEL_CLOSE',
+                98 => 'NET_SSH2_MSG_CHANNEL_REQUEST',
+                99 => 'NET_SSH2_MSG_CHANNEL_SUCCESS',
+                100 => 'NET_SSH2_MSG_CHANNEL_FAILURE'
+            ];
+            self::$disconnect_reasons = [
+                1 => 'NET_SSH2_DISCONNECT_HOST_NOT_ALLOWED_TO_CONNECT',
+                2 => 'NET_SSH2_DISCONNECT_PROTOCOL_ERROR',
+                3 => 'NET_SSH2_DISCONNECT_KEY_EXCHANGE_FAILED',
+                4 => 'NET_SSH2_DISCONNECT_RESERVED',
+                5 => 'NET_SSH2_DISCONNECT_MAC_ERROR',
+                6 => 'NET_SSH2_DISCONNECT_COMPRESSION_ERROR',
+                7 => 'NET_SSH2_DISCONNECT_SERVICE_NOT_AVAILABLE',
+                8 => 'NET_SSH2_DISCONNECT_PROTOCOL_VERSION_NOT_SUPPORTED',
+                9 => 'NET_SSH2_DISCONNECT_HOST_KEY_NOT_VERIFIABLE',
+                10 => 'NET_SSH2_DISCONNECT_CONNECTION_LOST',
+                11 => 'NET_SSH2_DISCONNECT_BY_APPLICATION',
+                12 => 'NET_SSH2_DISCONNECT_TOO_MANY_CONNECTIONS',
+                13 => 'NET_SSH2_DISCONNECT_AUTH_CANCELLED_BY_USER',
+                14 => 'NET_SSH2_DISCONNECT_NO_MORE_AUTH_METHODS_AVAILABLE',
+                15 => 'NET_SSH2_DISCONNECT_ILLEGAL_USER_NAME'
+            ];
+            self::$channel_open_failure_reasons = [
+                1 => 'NET_SSH2_OPEN_ADMINISTRATIVELY_PROHIBITED'
+            ];
+            self::$terminal_modes = [
+                0 => 'NET_SSH2_TTY_OP_END'
+            ];
+            self::$channel_extended_data_type_codes = [
+                1 => 'NET_SSH2_EXTENDED_DATA_STDERR'
+            ];
+
+            self::define_array(
+                self::$message_numbers,
+                self::$disconnect_reasons,
+                self::$channel_open_failure_reasons,
+                self::$terminal_modes,
+                self::$channel_extended_data_type_codes,
+                [60 => 'NET_SSH2_MSG_USERAUTH_PASSWD_CHANGEREQ'],
+                [60 => 'NET_SSH2_MSG_USERAUTH_PK_OK'],
+                [60 => 'NET_SSH2_MSG_USERAUTH_INFO_REQUEST',
+                      61 => 'NET_SSH2_MSG_USERAUTH_INFO_RESPONSE'],
+                // RFC 4419 - diffie-hellman-group-exchange-sha{1,256}
+                [30 => 'NET_SSH2_MSG_KEXDH_GEX_REQUEST_OLD',
+                      31 => 'NET_SSH2_MSG_KEXDH_GEX_GROUP',
+                      32 => 'NET_SSH2_MSG_KEXDH_GEX_INIT',
+                      33 => 'NET_SSH2_MSG_KEXDH_GEX_REPLY',
+                      34 => 'NET_SSH2_MSG_KEXDH_GEX_REQUEST'],
+                // RFC 5656 - Elliptic Curves (for curve25519-sha256@libssh.org)
+                [30 => 'NET_SSH2_MSG_KEX_ECDH_INIT',
+                      31 => 'NET_SSH2_MSG_KEX_ECDH_REPLY']
+            );
+        }
+
+        /**
+         * Typehint is required due to a bug in Psalm: https://github.com/vimeo/psalm/issues/7508
+         * @var \WeakReference<SSH2>|SSH2
+         */
+        self::$connections[$this->getResourceId()] = class_exists('WeakReference')
+            ? \WeakReference::create($this)
+            : $this;
+
+        $this->timeout = $timeout;
+
+        if (is_resource($host)) {
+            $this->fsock = $host;
+            return;
+        }
+
+        if (Strings::is_stringable($host)) {
+            $this->host = $host;
+            $this->port = $port;
+        }
+    }
+
+    /**
+     * Set Crypto Engine Mode
+     *
+     * Possible $engine values:
+     * OpenSSL, mcrypt, Eval, PHP
+     *
+     * @param int $engine
+     */
+    public static function setCryptoEngine($engine)
+    {
+        self::$crypto_engine = $engine;
+    }
+
+    /**
+     * Send Identification String First
+     *
+     * https://tools.ietf.org/html/rfc4253#section-4.2 says "when the connection has been established,
+     * both sides MUST send an identification string". It does not say which side sends it first. In
+     * theory it shouldn't matter but it is a fact of life that some SSH servers are simply buggy
+     *
+     */
+    public function sendIdentificationStringFirst()
+    {
+        $this->send_id_string_first = true;
+    }
+
+    /**
+     * Send Identification String Last
+     *
+     * https://tools.ietf.org/html/rfc4253#section-4.2 says "when the connection has been established,
+     * both sides MUST send an identification string". It does not say which side sends it first. In
+     * theory it shouldn't matter but it is a fact of life that some SSH servers are simply buggy
+     *
+     */
+    public function sendIdentificationStringLast()
+    {
+        $this->send_id_string_first = false;
+    }
+
+    /**
+     * Send SSH_MSG_KEXINIT First
+     *
+     * https://tools.ietf.org/html/rfc4253#section-7.1 says "key exchange begins by each sending
+     * sending the [SSH_MSG_KEXINIT] packet". It does not say which side sends it first. In theory
+     * it shouldn't matter but it is a fact of life that some SSH servers are simply buggy
+     *
+     */
+    public function sendKEXINITFirst()
+    {
+        $this->send_kex_first = true;
+    }
+
+    /**
+     * Send SSH_MSG_KEXINIT Last
+     *
+     * https://tools.ietf.org/html/rfc4253#section-7.1 says "key exchange begins by each sending
+     * sending the [SSH_MSG_KEXINIT] packet". It does not say which side sends it first. In theory
+     * it shouldn't matter but it is a fact of life that some SSH servers are simply buggy
+     *
+     */
+    public function sendKEXINITLast()
+    {
+        $this->send_kex_first = false;
+    }
+
+    /**
+     * stream_select wrapper
+     *
+     * Quoting https://stackoverflow.com/a/14262151/569976,
+     * "The general approach to `EINTR` is to simply handle the error and retry the operation again"
+     *
+     * This wrapper does that loop
+     */
+    private static function stream_select(&$read, &$write, &$except, $seconds, $microseconds = null)
+    {
+        $remaining = $seconds + $microseconds / 1000000;
+        $start = microtime(true);
+        while (true) {
+            $result = @stream_select($read, $write, $except, $seconds, $microseconds);
+            if ($result !== false) {
+                return $result;
+            }
+            $elapsed = microtime(true) - $start;
+            $seconds = (int) ($remaining - floor($elapsed));
+            $microseconds = (int) (1000000 * ($remaining - $seconds));
+            if ($elapsed >= $remaining) {
+                return false;
+            }
+        }
+    }
+
+    /**
+     * Connect to an SSHv2 server
+     *
+     * @throws \UnexpectedValueException on receipt of unexpected packets
+     * @throws \RuntimeException on other errors
+     */
+    private function connect()
+    {
+        if ($this->bitmap & self::MASK_CONSTRUCTOR) {
+            return;
+        }
+
+        $this->bitmap |= self::MASK_CONSTRUCTOR;
+
+        $this->curTimeout = $this->timeout;
+
+        $this->last_packet = microtime(true);
+
+        if (!is_resource($this->fsock)) {
+            $start = microtime(true);
+            // with stream_select a timeout of 0 means that no timeout takes place;
+            // with fsockopen a timeout of 0 means that you instantly timeout
+            // to resolve this incompatibility a timeout of 100,000 will be used for fsockopen if timeout is 0
+            $this->fsock = @fsockopen($this->host, $this->port, $errno, $errstr, $this->curTimeout == 0 ? 100000 : $this->curTimeout);
+            if (!$this->fsock) {
+                $host = $this->host . ':' . $this->port;
+                throw new UnableToConnectException(rtrim("Cannot connect to $host. Error $errno. $errstr"));
+            }
+            $elapsed = microtime(true) - $start;
+
+            if ($this->curTimeout) {
+                $this->curTimeout -= $elapsed;
+                if ($this->curTimeout < 0) {
+                    throw new \RuntimeException('Connection timed out whilst attempting to open socket connection');
+                }
+            }
+        }
+
+        $this->identifier = $this->generate_identifier();
+
+        if ($this->send_id_string_first) {
+            fputs($this->fsock, $this->identifier . "\r\n");
+        }
+
+        /* According to the SSH2 specs,
+
+          "The server MAY send other lines of data before sending the version
+           string.  Each line SHOULD be terminated by a Carriage Return and Line
+           Feed.  Such lines MUST NOT begin with "SSH-", and SHOULD be encoded
+           in ISO-10646 UTF-8 [RFC3629] (language is not specified).  Clients
+           MUST be able to process such lines." */
+        $data = '';
+        while (!feof($this->fsock) && !preg_match('#(.*)^(SSH-(\d\.\d+).*)#ms', $data, $matches)) {
+            $line = '';
+            while (true) {
+                if ($this->curTimeout) {
+                    if ($this->curTimeout < 0) {
+                        throw new \RuntimeException('Connection timed out whilst receiving server identification string');
+                    }
+                    $read = [$this->fsock];
+                    $write = $except = null;
+                    $start = microtime(true);
+                    $sec = (int) floor($this->curTimeout);
+                    $usec = (int) (1000000 * ($this->curTimeout - $sec));
+                    if (static::stream_select($read, $write, $except, $sec, $usec) === false) {
+                        throw new \RuntimeException('Connection timed out whilst receiving server identification string');
+                    }
+                    $elapsed = microtime(true) - $start;
+                    $this->curTimeout -= $elapsed;
+                }
+
+                $temp = stream_get_line($this->fsock, 255, "\n");
+                if ($temp === false) {
+                    throw new \RuntimeException('Error reading from socket');
+                }
+                if (strlen($temp) == 255) {
+                    continue;
+                }
+
+                $line .= "$temp\n";
+
+                // quoting RFC4253, "Implementers who wish to maintain
+                // compatibility with older, undocumented versions of this protocol may
+                // want to process the identification string without expecting the
+                // presence of the carriage return character for reasons described in
+                // Section 5 of this document."
+
+                //if (substr($line, -2) == "\r\n") {
+                //    break;
+                //}
+
+                break;
+            }
+
+            $data .= $line;
+        }
+
+        if (feof($this->fsock)) {
+            $this->bitmap = 0;
+            throw new ConnectionClosedException('Connection closed by server');
+        }
+
+        $extra = $matches[1];
+
+        if (defined('NET_SSH2_LOGGING')) {
+            $this->append_log('<-', $matches[0]);
+            $this->append_log('->', $this->identifier . "\r\n");
+        }
+
+        $this->server_identifier = trim($temp, "\r\n");
+        if (strlen($extra)) {
+            $this->errors[] = $data;
+        }
+
+        if (version_compare($matches[3], '1.99', '<')) {
+            $this->bitmap = 0;
+            throw new UnableToConnectException("Cannot connect to SSH $matches[3] servers");
+        }
+
+        // Ubuntu's OpenSSH from 5.8 to 6.9 didn't work with multiple channels. see
+        // https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/1334916 for more info.
+        // https://lists.ubuntu.com/archives/oneiric-changes/2011-July/005772.html discusses
+        // when consolekit was incorporated.
+        // https://marc.info/?l=openssh-unix-dev&m=163409903417589&w=2 discusses some of the
+        // issues with how Ubuntu incorporated consolekit
+        $pattern = '#^SSH-2\.0-OpenSSH_([\d.]+)[^ ]* Ubuntu-.*$#';
+        $match = preg_match($pattern, $this->server_identifier, $matches);
+        $match = $match && version_compare('5.8', $matches[1], '<=');
+        $match = $match && version_compare('6.9', $matches[1], '>=');
+        $this->errorOnMultipleChannels = $match;
+
+        if (!$this->send_id_string_first) {
+            fputs($this->fsock, $this->identifier . "\r\n");
+        }
+
+        if (!$this->send_kex_first) {
+            $response = $this->get_binary_packet();
+
+            if (is_bool($response) || !strlen($response) || ord($response[0]) != NET_SSH2_MSG_KEXINIT) {
+                $this->bitmap = 0;
+                throw new \UnexpectedValueException('Expected SSH_MSG_KEXINIT');
+            }
+
+            $this->key_exchange($response);
+        }
+
+        if ($this->send_kex_first) {
+            $this->key_exchange();
+        }
+
+        $this->bitmap |= self::MASK_CONNECTED;
+
+        return true;
+    }
+
+    /**
+     * Generates the SSH identifier
+     *
+     * You should overwrite this method in your own class if you want to use another identifier
+     *
+     * @return string
+     */
+    private function generate_identifier()
+    {
+        $identifier = 'SSH-2.0-phpseclib_3.0';
+
+        $ext = [];
+        if (extension_loaded('sodium')) {
+            $ext[] = 'libsodium';
+        }
+
+        if (extension_loaded('openssl')) {
+            $ext[] = 'openssl';
+        } elseif (extension_loaded('mcrypt')) {
+            $ext[] = 'mcrypt';
+        }
+
+        if (extension_loaded('gmp')) {
+            $ext[] = 'gmp';
+        } elseif (extension_loaded('bcmath')) {
+            $ext[] = 'bcmath';
+        }
+
+        if (!empty($ext)) {
+            $identifier .= ' (' . implode(', ', $ext) . ')';
+        }
+
+        return $identifier;
+    }
+
+    /**
+     * Key Exchange
+     *
+     * @return bool
+     * @param string|bool $kexinit_payload_server optional
+     * @throws \UnexpectedValueException on receipt of unexpected packets
+     * @throws \RuntimeException on other errors
+     * @throws \phpseclib3\Exception\NoSupportedAlgorithmsException when none of the algorithms phpseclib has loaded are compatible
+     */
+    private function key_exchange($kexinit_payload_server = false)
+    {
+        $preferred = $this->preferred;
+        $send_kex = true;
+
+        $kex_algorithms = isset($preferred['kex']) ?
+            $preferred['kex'] :
+            SSH2::getSupportedKEXAlgorithms();
+        $server_host_key_algorithms = isset($preferred['hostkey']) ?
+            $preferred['hostkey'] :
+            SSH2::getSupportedHostKeyAlgorithms();
+        $s2c_encryption_algorithms = isset($preferred['server_to_client']['crypt']) ?
+            $preferred['server_to_client']['crypt'] :
+            SSH2::getSupportedEncryptionAlgorithms();
+        $c2s_encryption_algorithms = isset($preferred['client_to_server']['crypt']) ?
+            $preferred['client_to_server']['crypt'] :
+            SSH2::getSupportedEncryptionAlgorithms();
+        $s2c_mac_algorithms = isset($preferred['server_to_client']['mac']) ?
+            $preferred['server_to_client']['mac'] :
+            SSH2::getSupportedMACAlgorithms();
+        $c2s_mac_algorithms = isset($preferred['client_to_server']['mac']) ?
+            $preferred['client_to_server']['mac'] :
+            SSH2::getSupportedMACAlgorithms();
+        $s2c_compression_algorithms = isset($preferred['server_to_client']['comp']) ?
+            $preferred['server_to_client']['comp'] :
+            SSH2::getSupportedCompressionAlgorithms();
+        $c2s_compression_algorithms = isset($preferred['client_to_server']['comp']) ?
+            $preferred['client_to_server']['comp'] :
+            SSH2::getSupportedCompressionAlgorithms();
+
+        $kex_algorithms = array_merge($kex_algorithms, ['ext-info-c', 'kex-strict-c-v00@openssh.com']);
+
+        // some SSH servers have buggy implementations of some of the above algorithms
+        switch (true) {
+            case $this->server_identifier == 'SSH-2.0-SSHD':
+            case substr($this->server_identifier, 0, 13) == 'SSH-2.0-DLINK':
+                if (!isset($preferred['server_to_client']['mac'])) {
+                    $s2c_mac_algorithms = array_values(array_diff(
+                        $s2c_mac_algorithms,
+                        ['hmac-sha1-96', 'hmac-md5-96']
+                    ));
+                }
+                if (!isset($preferred['client_to_server']['mac'])) {
+                    $c2s_mac_algorithms = array_values(array_diff(
+                        $c2s_mac_algorithms,
+                        ['hmac-sha1-96', 'hmac-md5-96']
+                    ));
+                }
+                break;
+            case substr($this->server_identifier, 0, 24) == 'SSH-2.0-TurboFTP_SERVER_':
+                if (!isset($preferred['server_to_client']['crypt'])) {
+                    $s2c_encryption_algorithms = array_values(array_diff(
+                        $s2c_encryption_algorithms,
+                        ['aes128-gcm@openssh.com', 'aes256-gcm@openssh.com']
+                    ));
+                }
+                if (!isset($preferred['client_to_server']['crypt'])) {
+                    $c2s_encryption_algorithms = array_values(array_diff(
+                        $c2s_encryption_algorithms,
+                        ['aes128-gcm@openssh.com', 'aes256-gcm@openssh.com']
+                    ));
+                }
+        }
+
+        $client_cookie = Random::string(16);
+
+        $kexinit_payload_client = pack('Ca*', NET_SSH2_MSG_KEXINIT, $client_cookie);
+        $kexinit_payload_client .= Strings::packSSH2(
+            'L10bN',
+            $kex_algorithms,
+            $server_host_key_algorithms,
+            $c2s_encryption_algorithms,
+            $s2c_encryption_algorithms,
+            $c2s_mac_algorithms,
+            $s2c_mac_algorithms,
+            $c2s_compression_algorithms,
+            $s2c_compression_algorithms,
+            [], // language, client to server
+            [], // language, server to client
+            false, // first_kex_packet_follows
+            0 // reserved for future extension
+        );
+
+        if ($kexinit_payload_server === false) {
+            $this->send_binary_packet($kexinit_payload_client);
+
+            $this->extra_packets = 0;
+            $kexinit_payload_server = $this->get_binary_packet();
+
+            if (
+                is_bool($kexinit_payload_server)
+                || !strlen($kexinit_payload_server)
+                || ord($kexinit_payload_server[0]) != NET_SSH2_MSG_KEXINIT
+            ) {
+                $this->disconnect_helper(NET_SSH2_DISCONNECT_PROTOCOL_ERROR);
+                throw new \UnexpectedValueException('Expected SSH_MSG_KEXINIT');
+            }
+
+            $send_kex = false;
+        }
+
+        $response = $kexinit_payload_server;
+        Strings::shift($response, 1); // skip past the message number (it should be SSH_MSG_KEXINIT)
+        $server_cookie = Strings::shift($response, 16);
+
+        list(
+            $this->kex_algorithms,
+            $this->server_host_key_algorithms,
+            $this->encryption_algorithms_client_to_server,
+            $this->encryption_algorithms_server_to_client,
+            $this->mac_algorithms_client_to_server,
+            $this->mac_algorithms_server_to_client,
+            $this->compression_algorithms_client_to_server,
+            $this->compression_algorithms_server_to_client,
+            $this->languages_client_to_server,
+            $this->languages_server_to_client,
+            $first_kex_packet_follows
+        ) = Strings::unpackSSH2('L10C', $response);
+        if (in_array('kex-strict-s-v00@openssh.com', $this->kex_algorithms)) {
+            if ($this->session_id === false && $this->extra_packets) {
+                throw new \UnexpectedValueException('Possible Terrapin Attack detected');
+            }
+        }
+
+        $this->supported_private_key_algorithms = $this->server_host_key_algorithms;
+
+        if ($send_kex) {
+            $this->send_binary_packet($kexinit_payload_client);
+        }
+
+        // we need to decide upon the symmetric encryption algorithms before we do the diffie-hellman key exchange
+
+        // we don't initialize any crypto-objects, yet - we do that, later. for now, we need the lengths to make the
+        // diffie-hellman key exchange as fast as possible
+        $decrypt = self::array_intersect_first($s2c_encryption_algorithms, $this->encryption_algorithms_server_to_client);
+        $decryptKeyLength = $this->encryption_algorithm_to_key_size($decrypt);
+        if ($decryptKeyLength === null) {
+            $this->disconnect_helper(NET_SSH2_DISCONNECT_KEY_EXCHANGE_FAILED);
+            throw new NoSupportedAlgorithmsException('No compatible server to client encryption algorithms found');
+        }
+
+        $encrypt = self::array_intersect_first($c2s_encryption_algorithms, $this->encryption_algorithms_client_to_server);
+        $encryptKeyLength = $this->encryption_algorithm_to_key_size($encrypt);
+        if ($encryptKeyLength === null) {
+            $this->disconnect_helper(NET_SSH2_DISCONNECT_KEY_EXCHANGE_FAILED);
+            throw new NoSupportedAlgorithmsException('No compatible client to server encryption algorithms found');
+        }
+
+        // through diffie-hellman key exchange a symmetric key is obtained
+        $this->kex_algorithm = self::array_intersect_first($kex_algorithms, $this->kex_algorithms);
+        if ($this->kex_algorithm === false) {
+            $this->disconnect_helper(NET_SSH2_DISCONNECT_KEY_EXCHANGE_FAILED);
+            throw new NoSupportedAlgorithmsException('No compatible key exchange algorithms found');
+        }
+
+        $server_host_key_algorithm = self::array_intersect_first($server_host_key_algorithms, $this->server_host_key_algorithms);
+        if ($server_host_key_algorithm === false) {
+            $this->disconnect_helper(NET_SSH2_DISCONNECT_KEY_EXCHANGE_FAILED);
+            throw new NoSupportedAlgorithmsException('No compatible server host key algorithms found');
+        }
+
+        $mac_algorithm_out = self::array_intersect_first($c2s_mac_algorithms, $this->mac_algorithms_client_to_server);
+        if ($mac_algorithm_out === false) {
+            $this->disconnect_helper(NET_SSH2_DISCONNECT_KEY_EXCHANGE_FAILED);
+            throw new NoSupportedAlgorithmsException('No compatible client to server message authentication algorithms found');
+        }
+
+        $mac_algorithm_in = self::array_intersect_first($s2c_mac_algorithms, $this->mac_algorithms_server_to_client);
+        if ($mac_algorithm_in === false) {
+            $this->disconnect_helper(NET_SSH2_DISCONNECT_KEY_EXCHANGE_FAILED);
+            throw new NoSupportedAlgorithmsException('No compatible server to client message authentication algorithms found');
+        }
+
+        $compression_map = [
+            'none' => self::NET_SSH2_COMPRESSION_NONE,
+            'zlib' => self::NET_SSH2_COMPRESSION_ZLIB,
+            'zlib@openssh.com' => self::NET_SSH2_COMPRESSION_ZLIB_AT_OPENSSH
+        ];
+
+        $compression_algorithm_in = self::array_intersect_first($s2c_compression_algorithms, $this->compression_algorithms_server_to_client);
+        if ($compression_algorithm_in === false) {
+            $this->disconnect_helper(NET_SSH2_DISCONNECT_KEY_EXCHANGE_FAILED);
+            throw new NoSupportedAlgorithmsException('No compatible server to client compression algorithms found');
+        }
+        $this->decompress = $compression_map[$compression_algorithm_in];
+
+        $compression_algorithm_out = self::array_intersect_first($c2s_compression_algorithms, $this->compression_algorithms_client_to_server);
+        if ($compression_algorithm_out === false) {
+            $this->disconnect_helper(NET_SSH2_DISCONNECT_KEY_EXCHANGE_FAILED);
+            throw new NoSupportedAlgorithmsException('No compatible client to server compression algorithms found');
+        }
+        $this->compress = $compression_map[$compression_algorithm_out];
+
+        switch ($this->kex_algorithm) {
+            case 'diffie-hellman-group15-sha512':
+            case 'diffie-hellman-group16-sha512':
+            case 'diffie-hellman-group17-sha512':
+            case 'diffie-hellman-group18-sha512':
+            case 'ecdh-sha2-nistp521':
+                $kexHash = new Hash('sha512');
+                break;
+            case 'ecdh-sha2-nistp384':
+                $kexHash = new Hash('sha384');
+                break;
+            case 'diffie-hellman-group-exchange-sha256':
+            case 'diffie-hellman-group14-sha256':
+            case 'ecdh-sha2-nistp256':
+            case 'curve25519-sha256@libssh.org':
+            case 'curve25519-sha256':
+                $kexHash = new Hash('sha256');
+                break;
+            default:
+                $kexHash = new Hash('sha1');
+        }
+
+        // Only relevant in diffie-hellman-group-exchange-sha{1,256}, otherwise empty.
+
+        $exchange_hash_rfc4419 = '';
+
+        if (strpos($this->kex_algorithm, 'curve25519-sha256') === 0 || strpos($this->kex_algorithm, 'ecdh-sha2-nistp') === 0) {
+            $curve = strpos($this->kex_algorithm, 'curve25519-sha256') === 0 ?
+                'Curve25519' :
+                substr($this->kex_algorithm, 10);
+            $ourPrivate = EC::createKey($curve);
+            $ourPublicBytes = $ourPrivate->getPublicKey()->getEncodedCoordinates();
+            $clientKexInitMessage = 'NET_SSH2_MSG_KEX_ECDH_INIT';
+            $serverKexReplyMessage = 'NET_SSH2_MSG_KEX_ECDH_REPLY';
+        } else {
+            if (strpos($this->kex_algorithm, 'diffie-hellman-group-exchange') === 0) {
+                $dh_group_sizes_packed = pack(
+                    'NNN',
+                    $this->kex_dh_group_size_min,
+                    $this->kex_dh_group_size_preferred,
+                    $this->kex_dh_group_size_max
+                );
+                $packet = pack(
+                    'Ca*',
+                    NET_SSH2_MSG_KEXDH_GEX_REQUEST,
+                    $dh_group_sizes_packed
+                );
+                $this->send_binary_packet($packet);
+                $this->updateLogHistory('UNKNOWN (34)', 'NET_SSH2_MSG_KEXDH_GEX_REQUEST');
+
+                $response = $this->get_binary_packet();
+
+                list($type, $primeBytes, $gBytes) = Strings::unpackSSH2('Css', $response);
+                if ($type != NET_SSH2_MSG_KEXDH_GEX_GROUP) {
+                    $this->disconnect_helper(NET_SSH2_DISCONNECT_PROTOCOL_ERROR);
+                    throw new \UnexpectedValueException('Expected SSH_MSG_KEX_DH_GEX_GROUP');
+                }
+                $this->updateLogHistory('NET_SSH2_MSG_KEXDH_REPLY', 'NET_SSH2_MSG_KEXDH_GEX_GROUP');
+                $prime = new BigInteger($primeBytes, -256);
+                $g = new BigInteger($gBytes, -256);
+
+                $exchange_hash_rfc4419 = $dh_group_sizes_packed . Strings::packSSH2(
+                    'ss',
+                    $primeBytes,
+                    $gBytes
+                );
+
+                $params = DH::createParameters($prime, $g);
+                $clientKexInitMessage = 'NET_SSH2_MSG_KEXDH_GEX_INIT';
+                $serverKexReplyMessage = 'NET_SSH2_MSG_KEXDH_GEX_REPLY';
+            } else {
+                $params = DH::createParameters($this->kex_algorithm);
+                $clientKexInitMessage = 'NET_SSH2_MSG_KEXDH_INIT';
+                $serverKexReplyMessage = 'NET_SSH2_MSG_KEXDH_REPLY';
+            }
+
+            $keyLength = min($kexHash->getLengthInBytes(), max($encryptKeyLength, $decryptKeyLength));
+
+            $ourPrivate = DH::createKey($params, 16 * $keyLength); // 2 * 8 * $keyLength
+            $ourPublic = $ourPrivate->getPublicKey()->toBigInteger();
+            $ourPublicBytes = $ourPublic->toBytes(true);
+        }
+
+        $data = pack('CNa*', constant($clientKexInitMessage), strlen($ourPublicBytes), $ourPublicBytes);
+
+        $this->send_binary_packet($data);
+
+        switch ($clientKexInitMessage) {
+            case 'NET_SSH2_MSG_KEX_ECDH_INIT':
+                $this->updateLogHistory('NET_SSH2_MSG_KEXDH_INIT', 'NET_SSH2_MSG_KEX_ECDH_INIT');
+                break;
+            case 'NET_SSH2_MSG_KEXDH_GEX_INIT':
+                $this->updateLogHistory('UNKNOWN (32)', 'NET_SSH2_MSG_KEXDH_GEX_INIT');
+        }
+
+        $response = $this->get_binary_packet();
+
+        list(
+            $type,
+            $server_public_host_key,
+            $theirPublicBytes,
+            $this->signature
+        ) = Strings::unpackSSH2('Csss', $response);
+
+        if ($type != constant($serverKexReplyMessage)) {
+            $this->disconnect_helper(NET_SSH2_DISCONNECT_PROTOCOL_ERROR);
+            throw new \UnexpectedValueException("Expected $serverKexReplyMessage");
+        }
+        switch ($serverKexReplyMessage) {
+            case 'NET_SSH2_MSG_KEX_ECDH_REPLY':
+                $this->updateLogHistory('NET_SSH2_MSG_KEXDH_REPLY', 'NET_SSH2_MSG_KEX_ECDH_REPLY');
+                break;
+            case 'NET_SSH2_MSG_KEXDH_GEX_REPLY':
+                $this->updateLogHistory('UNKNOWN (33)', 'NET_SSH2_MSG_KEXDH_GEX_REPLY');
+        }
+
+        $this->server_public_host_key = $server_public_host_key;
+        list($public_key_format) = Strings::unpackSSH2('s', $server_public_host_key);
+        if (strlen($this->signature) < 4) {
+            throw new \LengthException('The signature needs at least four bytes');
+        }
+        $temp = unpack('Nlength', substr($this->signature, 0, 4));
+        $this->signature_format = substr($this->signature, 4, $temp['length']);
+
+        $keyBytes = DH::computeSecret($ourPrivate, $theirPublicBytes);
+        if (($keyBytes & "\xFF\x80") === "\x00\x00") {
+            $keyBytes = substr($keyBytes, 1);
+        } elseif (($keyBytes[0] & "\x80") === "\x80") {
+            $keyBytes = "\0$keyBytes";
+        }
+
+        $this->exchange_hash = Strings::packSSH2(
+            's5',
+            $this->identifier,
+            $this->server_identifier,
+            $kexinit_payload_client,
+            $kexinit_payload_server,
+            $this->server_public_host_key
+        );
+        $this->exchange_hash .= $exchange_hash_rfc4419;
+        $this->exchange_hash .= Strings::packSSH2(
+            's3',
+            $ourPublicBytes,
+            $theirPublicBytes,
+            $keyBytes
+        );
+
+        $this->exchange_hash = $kexHash->hash($this->exchange_hash);
+
+        if ($this->session_id === false) {
+            $this->session_id = $this->exchange_hash;
+        }
+
+        switch ($server_host_key_algorithm) {
+            case 'rsa-sha2-256':
+            case 'rsa-sha2-512':
+            //case 'ssh-rsa':
+                $expected_key_format = 'ssh-rsa';
+                break;
+            default:
+                $expected_key_format = $server_host_key_algorithm;
+        }
+        if ($public_key_format != $expected_key_format || $this->signature_format != $server_host_key_algorithm) {
+            switch (true) {
+                case $this->signature_format == $server_host_key_algorithm:
+                case $server_host_key_algorithm != 'rsa-sha2-256' && $server_host_key_algorithm != 'rsa-sha2-512':
+                case $this->signature_format != 'ssh-rsa':
+                    $this->disconnect_helper(NET_SSH2_DISCONNECT_HOST_KEY_NOT_VERIFIABLE);
+                    throw new \RuntimeException('Server Host Key Algorithm Mismatch (' . $this->signature_format . ' vs ' . $server_host_key_algorithm . ')');
+            }
+        }
+
+        $packet = pack('C', NET_SSH2_MSG_NEWKEYS);
+        $this->send_binary_packet($packet);
+
+        $response = $this->get_binary_packet();
+
+        if ($response === false) {
+            $this->disconnect_helper(NET_SSH2_DISCONNECT_CONNECTION_LOST);
+            throw new ConnectionClosedException('Connection closed by server');
+        }
+
+        list($type) = Strings::unpackSSH2('C', $response);
+        if ($type != NET_SSH2_MSG_NEWKEYS) {
+            $this->disconnect_helper(NET_SSH2_DISCONNECT_PROTOCOL_ERROR);
+            throw new \UnexpectedValueException('Expected SSH_MSG_NEWKEYS');
+        }
+
+        if (in_array('kex-strict-s-v00@openssh.com', $this->kex_algorithms)) {
+            $this->get_seq_no = $this->send_seq_no = 0;
+        }
+
+        $keyBytes = pack('Na*', strlen($keyBytes), $keyBytes);
+
+        $this->encrypt = self::encryption_algorithm_to_crypt_instance($encrypt);
+        if ($this->encrypt) {
+            if (self::$crypto_engine) {
+                $this->encrypt->setPreferredEngine(self::$crypto_engine);
+            }
+            if ($this->encrypt->getBlockLengthInBytes()) {
+                $this->encrypt_block_size = $this->encrypt->getBlockLengthInBytes();
+            }
+            $this->encrypt->disablePadding();
+
+            if ($this->encrypt->usesIV()) {
+                $iv = $kexHash->hash($keyBytes . $this->exchange_hash . 'A' . $this->session_id);
+                while ($this->encrypt_block_size > strlen($iv)) {
+                    $iv .= $kexHash->hash($keyBytes . $this->exchange_hash . $iv);
+                }
+                $this->encrypt->setIV(substr($iv, 0, $this->encrypt_block_size));
+            }
+
+            switch ($encrypt) {
+                case 'aes128-gcm@openssh.com':
+                case 'aes256-gcm@openssh.com':
+                    $nonce = $kexHash->hash($keyBytes . $this->exchange_hash . 'A' . $this->session_id);
+                    $this->encryptFixedPart = substr($nonce, 0, 4);
+                    $this->encryptInvocationCounter = substr($nonce, 4, 8);
+                    // fall-through
+                case 'chacha20-poly1305@openssh.com':
+                    break;
+                default:
+                    $this->encrypt->enableContinuousBuffer();
+            }
+
+            $key = $kexHash->hash($keyBytes . $this->exchange_hash . 'C' . $this->session_id);
+            while ($encryptKeyLength > strlen($key)) {
+                $key .= $kexHash->hash($keyBytes . $this->exchange_hash . $key);
+            }
+            switch ($encrypt) {
+                case 'chacha20-poly1305@openssh.com':
+                    $encryptKeyLength = 32;
+                    $this->lengthEncrypt = self::encryption_algorithm_to_crypt_instance($encrypt);
+                    $this->lengthEncrypt->setKey(substr($key, 32, 32));
+            }
+            $this->encrypt->setKey(substr($key, 0, $encryptKeyLength));
+            $this->encryptName = $encrypt;
+        }
+
+        $this->decrypt = self::encryption_algorithm_to_crypt_instance($decrypt);
+        if ($this->decrypt) {
+            if (self::$crypto_engine) {
+                $this->decrypt->setPreferredEngine(self::$crypto_engine);
+            }
+            if ($this->decrypt->getBlockLengthInBytes()) {
+                $this->decrypt_block_size = $this->decrypt->getBlockLengthInBytes();
+            }
+            $this->decrypt->disablePadding();
+
+            if ($this->decrypt->usesIV()) {
+                $iv = $kexHash->hash($keyBytes . $this->exchange_hash . 'B' . $this->session_id);
+                while ($this->decrypt_block_size > strlen($iv)) {
+                    $iv .= $kexHash->hash($keyBytes . $this->exchange_hash . $iv);
+                }
+                $this->decrypt->setIV(substr($iv, 0, $this->decrypt_block_size));
+            }
+
+            switch ($decrypt) {
+                case 'aes128-gcm@openssh.com':
+                case 'aes256-gcm@openssh.com':
+                    // see https://tools.ietf.org/html/rfc5647#section-7.1
+                    $nonce = $kexHash->hash($keyBytes . $this->exchange_hash . 'B' . $this->session_id);
+                    $this->decryptFixedPart = substr($nonce, 0, 4);
+                    $this->decryptInvocationCounter = substr($nonce, 4, 8);
+                    // fall-through
+                case 'chacha20-poly1305@openssh.com':
+                    break;
+                default:
+                    $this->decrypt->enableContinuousBuffer();
+            }
+
+            $key = $kexHash->hash($keyBytes . $this->exchange_hash . 'D' . $this->session_id);
+            while ($decryptKeyLength > strlen($key)) {
+                $key .= $kexHash->hash($keyBytes . $this->exchange_hash . $key);
+            }
+            switch ($decrypt) {
+                case 'chacha20-poly1305@openssh.com':
+                    $decryptKeyLength = 32;
+                    $this->lengthDecrypt = self::encryption_algorithm_to_crypt_instance($decrypt);
+                    $this->lengthDecrypt->setKey(substr($key, 32, 32));
+            }
+            $this->decrypt->setKey(substr($key, 0, $decryptKeyLength));
+            $this->decryptName = $decrypt;
+        }
+
+        /* The "arcfour128" algorithm is the RC4 cipher, as described in
+           [SCHNEIER], using a 128-bit key.  The first 1536 bytes of keystream
+           generated by the cipher MUST be discarded, and the first byte of the
+           first encrypted packet MUST be encrypted using the 1537th byte of
+           keystream.
+
+           -- http://tools.ietf.org/html/rfc4345#section-4 */
+        if ($encrypt == 'arcfour128' || $encrypt == 'arcfour256') {
+            $this->encrypt->encrypt(str_repeat("\0", 1536));
+        }
+        if ($decrypt == 'arcfour128' || $decrypt == 'arcfour256') {
+            $this->decrypt->decrypt(str_repeat("\0", 1536));
+        }
+
+        if (!$this->encrypt->usesNonce()) {
+            list($this->hmac_create, $createKeyLength) = self::mac_algorithm_to_hash_instance($mac_algorithm_out);
+        } else {
+            $this->hmac_create = new \stdClass();
+            $this->hmac_create_name = $mac_algorithm_out;
+            //$mac_algorithm_out = 'none';
+            $createKeyLength = 0;
+        }
+
+        if ($this->hmac_create instanceof Hash) {
+            $key = $kexHash->hash($keyBytes . $this->exchange_hash . 'E' . $this->session_id);
+            while ($createKeyLength > strlen($key)) {
+                $key .= $kexHash->hash($keyBytes . $this->exchange_hash . $key);
+            }
+            $this->hmac_create->setKey(substr($key, 0, $createKeyLength));
+            $this->hmac_create_name = $mac_algorithm_out;
+            $this->hmac_create_etm = preg_match('#-etm@openssh\.com$#', $mac_algorithm_out);
+        }
+
+        if (!$this->decrypt->usesNonce()) {
+            list($this->hmac_check, $checkKeyLength) = self::mac_algorithm_to_hash_instance($mac_algorithm_in);
+            $this->hmac_size = $this->hmac_check->getLengthInBytes();
+        } else {
+            $this->hmac_check = new \stdClass();
+            $this->hmac_check_name = $mac_algorithm_in;
+            //$mac_algorithm_in = 'none';
+            $checkKeyLength = 0;
+            $this->hmac_size = 0;
+        }
+
+        if ($this->hmac_check instanceof Hash) {
+            $key = $kexHash->hash($keyBytes . $this->exchange_hash . 'F' . $this->session_id);
+            while ($checkKeyLength > strlen($key)) {
+                $key .= $kexHash->hash($keyBytes . $this->exchange_hash . $key);
+            }
+            $this->hmac_check->setKey(substr($key, 0, $checkKeyLength));
+            $this->hmac_check_name = $mac_algorithm_in;
+            $this->hmac_check_etm = preg_match('#-etm@openssh\.com$#', $mac_algorithm_in);
+        }
+
+        $this->regenerate_compression_context = $this->regenerate_decompression_context = true;
+
+        return true;
+    }
+
+    /**
+     * Maps an encryption algorithm name to the number of key bytes.
+     *
+     * @param string $algorithm Name of the encryption algorithm
+     * @return int|null Number of bytes as an integer or null for unknown
+     */
+    private function encryption_algorithm_to_key_size($algorithm)
+    {
+        if ($this->bad_key_size_fix && self::bad_algorithm_candidate($algorithm)) {
+            return 16;
+        }
+
+        switch ($algorithm) {
+            case 'none':
+                return 0;
+            case 'aes128-gcm@openssh.com':
+            case 'aes128-cbc':
+            case 'aes128-ctr':
+            case 'arcfour':
+            case 'arcfour128':
+            case 'blowfish-cbc':
+            case 'blowfish-ctr':
+            case 'twofish128-cbc':
+            case 'twofish128-ctr':
+                return 16;
+            case '3des-cbc':
+            case '3des-ctr':
+            case 'aes192-cbc':
+            case 'aes192-ctr':
+            case 'twofish192-cbc':
+            case 'twofish192-ctr':
+                return 24;
+            case 'aes256-gcm@openssh.com':
+            case 'aes256-cbc':
+            case 'aes256-ctr':
+            case 'arcfour256':
+            case 'twofish-cbc':
+            case 'twofish256-cbc':
+            case 'twofish256-ctr':
+                return 32;
+            case 'chacha20-poly1305@openssh.com':
+                return 64;
+        }
+        return null;
+    }
+
+    /**
+     * Maps an encryption algorithm name to an instance of a subclass of
+     * \phpseclib3\Crypt\Common\SymmetricKey.
+     *
+     * @param string $algorithm Name of the encryption algorithm
+     * @return SymmetricKey|null
+     */
+    private static function encryption_algorithm_to_crypt_instance($algorithm)
+    {
+        switch ($algorithm) {
+            case '3des-cbc':
+                return new TripleDES('cbc');
+            case '3des-ctr':
+                return new TripleDES('ctr');
+            case 'aes256-cbc':
+            case 'aes192-cbc':
+            case 'aes128-cbc':
+                return new Rijndael('cbc');
+            case 'aes256-ctr':
+            case 'aes192-ctr':
+            case 'aes128-ctr':
+                return new Rijndael('ctr');
+            case 'blowfish-cbc':
+                return new Blowfish('cbc');
+            case 'blowfish-ctr':
+                return new Blowfish('ctr');
+            case 'twofish128-cbc':
+            case 'twofish192-cbc':
+            case 'twofish256-cbc':
+            case 'twofish-cbc':
+                return new Twofish('cbc');
+            case 'twofish128-ctr':
+            case 'twofish192-ctr':
+            case 'twofish256-ctr':
+                return new Twofish('ctr');
+            case 'arcfour':
+            case 'arcfour128':
+            case 'arcfour256':
+                return new RC4();
+            case 'aes128-gcm@openssh.com':
+            case 'aes256-gcm@openssh.com':
+                return new Rijndael('gcm');
+            case 'chacha20-poly1305@openssh.com':
+                return new ChaCha20();
+        }
+        return null;
+    }
+
+    /**
+     * Maps an encryption algorithm name to an instance of a subclass of
+     * \phpseclib3\Crypt\Hash.
+     *
+     * @param string $algorithm Name of the encryption algorithm
+     * @return array{Hash, int}|null
+     */
+    private static function mac_algorithm_to_hash_instance($algorithm)
+    {
+        switch ($algorithm) {
+            case 'umac-64@openssh.com':
+            case 'umac-64-etm@openssh.com':
+                return [new Hash('umac-64'), 16];
+            case 'umac-128@openssh.com':
+            case 'umac-128-etm@openssh.com':
+                return [new Hash('umac-128'), 16];
+            case 'hmac-sha2-512':
+            case 'hmac-sha2-512-etm@openssh.com':
+                return [new Hash('sha512'), 64];
+            case 'hmac-sha2-256':
+            case 'hmac-sha2-256-etm@openssh.com':
+                return [new Hash('sha256'), 32];
+            case 'hmac-sha1':
+            case 'hmac-sha1-etm@openssh.com':
+                return [new Hash('sha1'), 20];
+            case 'hmac-sha1-96':
+                return [new Hash('sha1-96'), 20];
+            case 'hmac-md5':
+                return [new Hash('md5'), 16];
+            case 'hmac-md5-96':
+                return [new Hash('md5-96'), 16];
+        }
+    }
+
+    /*
+     * Tests whether or not proposed algorithm has a potential for issues
+     *
+     * @link https://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/ssh2-aesctr-openssh.html
+     * @link https://bugzilla.mindrot.org/show_bug.cgi?id=1291
+     * @param string $algorithm Name of the encryption algorithm
+     * @return bool
+     */
+    private static function bad_algorithm_candidate($algorithm)
+    {
+        switch ($algorithm) {
+            case 'arcfour256':
+            case 'aes192-ctr':
+            case 'aes256-ctr':
+                return true;
+        }
+
+        return false;
+    }
+
+    /**
+     * Login
+     *
+     * The $password parameter can be a plaintext password, a \phpseclib3\Crypt\RSA|EC|DSA object, a \phpseclib3\System\SSH\Agent object or an array
+     *
+     * @param string $username
+     * @param string|PrivateKey|array[]|Agent|null ...$args
+     * @return bool
+     * @see self::_login()
+     */
+    public function login($username, ...$args)
+    {
+        if (!$this->retry_connect) {
+            $this->auth[] = func_get_args();
+        }
+
+        // try logging with 'none' as an authentication method first since that's what
+        // PuTTY does
+        if (substr($this->server_identifier, 0, 15) != 'SSH-2.0-CoreFTP' && $this->auth_methods_to_continue === null) {
+            if ($this->sublogin($username)) {
+                return true;
+            }
+            if (!count($args)) {
+                return false;
+            }
+        }
+        return $this->sublogin($username, ...$args);
+    }
+
+    /**
+     * Login Helper
+     *
+     * @param string $username
+     * @param string|PrivateKey|array[]|Agent|null ...$args
+     * @return bool
+     * @see self::_login_helper()
+     */
+    protected function sublogin($username, ...$args)
+    {
+        if (!($this->bitmap & self::MASK_CONSTRUCTOR)) {
+            $this->connect();
+        }
+
+        if (empty($args)) {
+            return $this->login_helper($username);
+        }
+
+        foreach ($args as $arg) {
+            switch (true) {
+                case $arg instanceof PublicKey:
+                    throw new \UnexpectedValueException('A PublicKey object was passed to the login method instead of a PrivateKey object');
+                case $arg instanceof PrivateKey:
+                case $arg instanceof Agent:
+                case is_array($arg):
+                case Strings::is_stringable($arg):
+                    break;
+                default:
+                    throw new \UnexpectedValueException('$password needs to either be an instance of \phpseclib3\Crypt\Common\PrivateKey, \System\SSH\Agent, an array or a string');
+            }
+        }
+
+        while (count($args)) {
+            if (!$this->auth_methods_to_continue || !$this->smartMFA) {
+                $newargs = $args;
+                $args = [];
+            } else {
+                $newargs = [];
+                foreach ($this->auth_methods_to_continue as $method) {
+                    switch ($method) {
+                        case 'publickey':
+                            foreach ($args as $key => $arg) {
+                                if ($arg instanceof PrivateKey || $arg instanceof Agent) {
+                                    $newargs[] = $arg;
+                                    unset($args[$key]);
+                                    break;
+                                }
+                            }
+                            break;
+                        case 'keyboard-interactive':
+                            $hasArray = $hasString = false;
+                            foreach ($args as $arg) {
+                                if ($hasArray || is_array($arg)) {
+                                    $hasArray = true;
+                                    break;
+                                }
+                                if ($hasString || Strings::is_stringable($arg)) {
+                                    $hasString = true;
+                                    break;
+                                }
+                            }
+                            if ($hasArray && $hasString) {
+                                foreach ($args as $key => $arg) {
+                                    if (is_array($arg)) {
+                                        $newargs[] = $arg;
+                                        break 2;
+                                    }
+                                }
+                            }
+                            // fall-through
+                        case 'password':
+                            foreach ($args as $key => $arg) {
+                                $newargs[] = $arg;
+                                unset($args[$key]);
+                                break;
+                            }
+                    }
+                }
+            }
+
+            if (!count($newargs)) {
+                return false;
+            }
+
+            foreach ($newargs as $arg) {
+                if ($this->login_helper($username, $arg)) {
+                    return true;
+                }
+            }
+        }
+        return false;
+    }
+
+    /**
+     * Login Helper
+     *
+     * {@internal It might be worthwhile, at some point, to protect against {@link http://tools.ietf.org/html/rfc4251#section-9.3.9 traffic analysis}
+     *           by sending dummy SSH_MSG_IGNORE messages.}
+     *
+     * @param string $username
+     * @param string|AsymmetricKey|array[]|Agent|null ...$args
+     * @return bool
+     * @throws \UnexpectedValueException on receipt of unexpected packets
+     * @throws \RuntimeException on other errors
+     */
+    private function login_helper($username, $password = null)
+    {
+        if (!($this->bitmap & self::MASK_CONNECTED)) {
+            return false;
+        }
+
+        if (!($this->bitmap & self::MASK_LOGIN_REQ)) {
+            $packet = Strings::packSSH2('Cs', NET_SSH2_MSG_SERVICE_REQUEST, 'ssh-userauth');
+            $this->send_binary_packet($packet);
+
+            try {
+                $response = $this->get_binary_packet();
+            } catch (\Exception $e) {
+                if ($this->retry_connect) {
+                    $this->retry_connect = false;
+                    $this->connect();
+                    return $this->login_helper($username, $password);
+                }
+                $this->disconnect_helper(NET_SSH2_DISCONNECT_CONNECTION_LOST);
+                throw $e;
+            }
+
+            list($type) = Strings::unpackSSH2('C', $response);
+
+            if ($type == NET_SSH2_MSG_EXT_INFO) {
+                list($nr_extensions) = Strings::unpackSSH2('N', $response);
+                for ($i = 0; $i < $nr_extensions; $i++) {
+                    list($extension_name, $extension_value) = Strings::unpackSSH2('ss', $response);
+                    if ($extension_name == 'server-sig-algs') {
+                        $this->supported_private_key_algorithms = explode(',', $extension_value);
+                    }
+                }
+
+                $response = $this->get_binary_packet();
+                list($type) = Strings::unpackSSH2('C', $response);
+            }
+
+            list($service) = Strings::unpackSSH2('s', $response);
+
+            if ($type != NET_SSH2_MSG_SERVICE_ACCEPT || $service != 'ssh-userauth') {
+                $this->disconnect_helper(NET_SSH2_DISCONNECT_PROTOCOL_ERROR);
+                throw new \UnexpectedValueException('Expected SSH_MSG_SERVICE_ACCEPT');
+            }
+            $this->bitmap |= self::MASK_LOGIN_REQ;
+        }
+
+        if (strlen($this->last_interactive_response)) {
+            return !Strings::is_stringable($password) && !is_array($password) ? false : $this->keyboard_interactive_process($password);
+        }
+
+        if ($password instanceof PrivateKey) {
+            return $this->privatekey_login($username, $password);
+        }
+
+        if ($password instanceof Agent) {
+            return $this->ssh_agent_login($username, $password);
+        }
+
+        if (is_array($password)) {
+            if ($this->keyboard_interactive_login($username, $password)) {
+                $this->bitmap |= self::MASK_LOGIN;
+                return true;
+            }
+            return false;
+        }
+
+        if (!isset($password)) {
+            $packet = Strings::packSSH2(
+                'Cs3',
+                NET_SSH2_MSG_USERAUTH_REQUEST,
+                $username,
+                'ssh-connection',
+                'none'
+            );
+
+            $this->send_binary_packet($packet);
+
+            $response = $this->get_binary_packet();
+
+            list($type) = Strings::unpackSSH2('C', $response);
+            switch ($type) {
+                case NET_SSH2_MSG_USERAUTH_SUCCESS:
+                    $this->bitmap |= self::MASK_LOGIN;
+                    return true;
+                case NET_SSH2_MSG_USERAUTH_FAILURE:
+                    list($auth_methods) = Strings::unpackSSH2('L', $response);
+                    $this->auth_methods_to_continue = $auth_methods;
+                    // fall-through
+                default:
+                    return false;
+            }
+        }
+
+        $packet = Strings::packSSH2(
+            'Cs3bs',
+            NET_SSH2_MSG_USERAUTH_REQUEST,
+            $username,
+            'ssh-connection',
+            'password',
+            false,
+            $password
+        );
+
+        // remove the username and password from the logged packet
+        if (!defined('NET_SSH2_LOGGING')) {
+            $logged = null;
+        } else {
+            $logged = Strings::packSSH2(
+                'Cs3bs',
+                NET_SSH2_MSG_USERAUTH_REQUEST,
+                $username,
+                'ssh-connection',
+                'password',
+                false,
+                'password'
+            );
+        }
+
+        $this->send_binary_packet($packet, $logged);
+
+        $response = $this->get_binary_packet();
+        if ($response === false) {
+            return false;
+        }
+        list($type) = Strings::unpackSSH2('C', $response);
+        switch ($type) {
+            case NET_SSH2_MSG_USERAUTH_PASSWD_CHANGEREQ: // in theory, the password can be changed
+                $this->updateLogHistory('UNKNOWN (60)', 'NET_SSH2_MSG_USERAUTH_PASSWD_CHANGEREQ');
+
+                list($message) = Strings::unpackSSH2('s', $response);
+                $this->errors[] = 'SSH_MSG_USERAUTH_PASSWD_CHANGEREQ: ' . $message;
+
+                return $this->disconnect_helper(NET_SSH2_DISCONNECT_AUTH_CANCELLED_BY_USER);
+            case NET_SSH2_MSG_USERAUTH_FAILURE:
+                // can we use keyboard-interactive authentication?  if not then either the login is bad or the server employees
+                // multi-factor authentication
+                list($auth_methods, $partial_success) = Strings::unpackSSH2('Lb', $response);
+                $this->auth_methods_to_continue = $auth_methods;
+                if (!$partial_success && in_array('keyboard-interactive', $auth_methods)) {
+                    if ($this->keyboard_interactive_login($username, $password)) {
+                        $this->bitmap |= self::MASK_LOGIN;
+                        return true;
+                    }
+                    return false;
+                }
+                return false;
+            case NET_SSH2_MSG_USERAUTH_SUCCESS:
+                $this->bitmap |= self::MASK_LOGIN;
+                return true;
+        }
+
+        return false;
+    }
+
+    /**
+     * Login via keyboard-interactive authentication
+     *
+     * See {@link http://tools.ietf.org/html/rfc4256 RFC4256} for details.  This is not a full-featured keyboard-interactive authenticator.
+     *
+     * @param string $username
+     * @param string|array $password
+     * @return bool
+     */
+    private function keyboard_interactive_login($username, $password)
+    {
+        $packet = Strings::packSSH2(
+            'Cs5',
+            NET_SSH2_MSG_USERAUTH_REQUEST,
+            $username,
+            'ssh-connection',
+            'keyboard-interactive',
+            '', // language tag
+            '' // submethods
+        );
+        $this->send_binary_packet($packet);
+
+        return $this->keyboard_interactive_process($password);
+    }
+
+    /**
+     * Handle the keyboard-interactive requests / responses.
+     *
+     * @param string|array ...$responses
+     * @return bool
+     * @throws \RuntimeException on connection error
+     */
+    private function keyboard_interactive_process(...$responses)
+    {
+        if (strlen($this->last_interactive_response)) {
+            $response = $this->last_interactive_response;
+        } else {
+            $orig = $response = $this->get_binary_packet();
+        }
+
+        list($type) = Strings::unpackSSH2('C', $response);
+        switch ($type) {
+            case NET_SSH2_MSG_USERAUTH_INFO_REQUEST:
+                list(
+                    , // name; may be empty
+                    , // instruction; may be empty
+                    , // language tag; may be empty
+                    $num_prompts
+                ) = Strings::unpackSSH2('s3N', $response);
+
+                for ($i = 0; $i < count($responses); $i++) {
+                    if (is_array($responses[$i])) {
+                        foreach ($responses[$i] as $key => $value) {
+                            $this->keyboard_requests_responses[$key] = $value;
+                        }
+                        unset($responses[$i]);
+                    }
+                }
+                $responses = array_values($responses);
+
+                if (isset($this->keyboard_requests_responses)) {
+                    for ($i = 0; $i < $num_prompts; $i++) {
+                        list(
+                            $prompt, // prompt - ie. "Password: "; must not be empty
+                            // echo
+                        ) = Strings::unpackSSH2('sC', $response);
+                        foreach ($this->keyboard_requests_responses as $key => $value) {
+                            if (substr($prompt, 0, strlen($key)) == $key) {
+                                $responses[] = $value;
+                                break;
+                            }
+                        }
+                    }
+                }
+
+                // see http://tools.ietf.org/html/rfc4256#section-3.2
+                if (strlen($this->last_interactive_response)) {
+                    $this->last_interactive_response = '';
+                } else {
+                    $this->updateLogHistory('UNKNOWN (60)', 'NET_SSH2_MSG_USERAUTH_INFO_REQUEST');
+                }
+
+                if (!count($responses) && $num_prompts) {
+                    $this->last_interactive_response = $orig;
+                    return false;
+                }
+
+                /*
+                   After obtaining the requested information from the user, the client
+                   MUST respond with an SSH_MSG_USERAUTH_INFO_RESPONSE message.
+                */
+                // see http://tools.ietf.org/html/rfc4256#section-3.4
+                $packet = $logged = pack('CN', NET_SSH2_MSG_USERAUTH_INFO_RESPONSE, count($responses));
+                for ($i = 0; $i < count($responses); $i++) {
+                    $packet .= Strings::packSSH2('s', $responses[$i]);
+                    $logged .= Strings::packSSH2('s', 'dummy-answer');
+                }
+
+                $this->send_binary_packet($packet, $logged);
+
+                $this->updateLogHistory('UNKNOWN (61)', 'NET_SSH2_MSG_USERAUTH_INFO_RESPONSE');
+
+                /*
+                   After receiving the response, the server MUST send either an
+                   SSH_MSG_USERAUTH_SUCCESS, SSH_MSG_USERAUTH_FAILURE, or another
+                   SSH_MSG_USERAUTH_INFO_REQUEST message.
+                */
+                // maybe phpseclib should force close the connection after x request / responses?  unless something like that is done
+                // there could be an infinite loop of request / responses.
+                return $this->keyboard_interactive_process();
+            case NET_SSH2_MSG_USERAUTH_SUCCESS:
+                return true;
+            case NET_SSH2_MSG_USERAUTH_FAILURE:
+                list($auth_methods) = Strings::unpackSSH2('L', $response);
+                $this->auth_methods_to_continue = $auth_methods;
+                return false;
+        }
+
+        return false;
+    }
+
+    /**
+     * Login with an ssh-agent provided key
+     *
+     * @param string $username
+     * @param \phpseclib3\System\SSH\Agent $agent
+     * @return bool
+     */
+    private function ssh_agent_login($username, Agent $agent)
+    {
+        $this->agent = $agent;
+        $keys = $agent->requestIdentities();
+        foreach ($keys as $key) {
+            if ($this->privatekey_login($username, $key)) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    /**
+     * Login with an RSA private key
+     *
+     * {@internal It might be worthwhile, at some point, to protect against {@link http://tools.ietf.org/html/rfc4251#section-9.3.9 traffic analysis}
+     *           by sending dummy SSH_MSG_IGNORE messages.}
+     *
+     * @param string $username
+     * @param \phpseclib3\Crypt\Common\PrivateKey $privatekey
+     * @return bool
+     * @throws \RuntimeException on connection error
+     */
+    private function privatekey_login($username, PrivateKey $privatekey)
+    {
+        $publickey = $privatekey->getPublicKey();
+
+        if ($publickey instanceof RSA) {
+            $privatekey = $privatekey->withPadding(RSA::SIGNATURE_PKCS1);
+            $algos = ['rsa-sha2-256', 'rsa-sha2-512', 'ssh-rsa'];
+            if (isset($this->preferred['hostkey'])) {
+                $algos = array_intersect($algos, $this->preferred['hostkey']);
+            }
+            $algo = self::array_intersect_first($algos, $this->supported_private_key_algorithms);
+            switch ($algo) {
+                case 'rsa-sha2-512':
+                    $hash = 'sha512';
+                    $signatureType = 'rsa-sha2-512';
+                    break;
+                case 'rsa-sha2-256':
+                    $hash = 'sha256';
+                    $signatureType = 'rsa-sha2-256';
+                    break;
+                //case 'ssh-rsa':
+                default:
+                    $hash = 'sha1';
+                    $signatureType = 'ssh-rsa';
+            }
+        } elseif ($publickey instanceof EC) {
+            $privatekey = $privatekey->withSignatureFormat('SSH2');
+            $curveName = $privatekey->getCurve();
+            switch ($curveName) {
+                case 'Ed25519':
+                    $hash = 'sha512';
+                    $signatureType = 'ssh-ed25519';
+                    break;
+                case 'secp256r1': // nistp256
+                    $hash = 'sha256';
+                    $signatureType = 'ecdsa-sha2-nistp256';
+                    break;
+                case 'secp384r1': // nistp384
+                    $hash = 'sha384';
+                    $signatureType = 'ecdsa-sha2-nistp384';
+                    break;
+                case 'secp521r1': // nistp521
+                    $hash = 'sha512';
+                    $signatureType = 'ecdsa-sha2-nistp521';
+                    break;
+                default:
+                    if (is_array($curveName)) {
+                        throw new UnsupportedCurveException('Specified Curves are not supported by SSH2');
+                    }
+                    throw new UnsupportedCurveException('Named Curve of ' . $curveName . ' is not supported by phpseclib3\'s SSH2 implementation');
+            }
+        } elseif ($publickey instanceof DSA) {
+            $privatekey = $privatekey->withSignatureFormat('SSH2');
+            $hash = 'sha1';
+            $signatureType = 'ssh-dss';
+        } else {
+            throw new UnsupportedAlgorithmException('Please use either an RSA key, an EC one or a DSA key');
+        }
+
+        $publickeyStr = $publickey->toString('OpenSSH', ['binary' => true]);
+
+        $part1 = Strings::packSSH2(
+            'Csss',
+            NET_SSH2_MSG_USERAUTH_REQUEST,
+            $username,
+            'ssh-connection',
+            'publickey'
+        );
+        $part2 = Strings::packSSH2('ss', $signatureType, $publickeyStr);
+
+        $packet = $part1 . chr(0) . $part2;
+        $this->send_binary_packet($packet);
+
+        $response = $this->get_binary_packet();
+
+        list($type) = Strings::unpackSSH2('C', $response);
+        switch ($type) {
+            case NET_SSH2_MSG_USERAUTH_FAILURE:
+                list($auth_methods) = Strings::unpackSSH2('L', $response);
+                if (in_array('publickey', $auth_methods) && substr($signatureType, 0, 9) == 'rsa-sha2-') {
+                    $this->supported_private_key_algorithms = array_diff($this->supported_private_key_algorithms, ['rsa-sha2-256', 'rsa-sha2-512']);
+                    return $this->privatekey_login($username, $privatekey);
+                }
+                $this->auth_methods_to_continue = $auth_methods;
+                $this->errors[] = 'SSH_MSG_USERAUTH_FAILURE';
+                return false;
+            case NET_SSH2_MSG_USERAUTH_PK_OK:
+                // we'll just take it on faith that the public key blob and the public key algorithm name are as
+                // they should be
+                $this->updateLogHistory('UNKNOWN (60)', 'NET_SSH2_MSG_USERAUTH_PK_OK');
+                break;
+            case NET_SSH2_MSG_USERAUTH_SUCCESS:
+                $this->bitmap |= self::MASK_LOGIN;
+                return true;
+            default:
+                $this->disconnect_helper(NET_SSH2_DISCONNECT_BY_APPLICATION);
+                throw new ConnectionClosedException('Unexpected response to publickey authentication pt 1');
+        }
+
+        $packet = $part1 . chr(1) . $part2;
+        $privatekey = $privatekey->withHash($hash);
+        $signature = $privatekey->sign(Strings::packSSH2('s', $this->session_id) . $packet);
+        if ($publickey instanceof RSA) {
+            $signature = Strings::packSSH2('ss', $signatureType, $signature);
+        }
+        $packet .= Strings::packSSH2('s', $signature);
+
+        $this->send_binary_packet($packet);
+
+        $response = $this->get_binary_packet();
+
+        list($type) = Strings::unpackSSH2('C', $response);
+        switch ($type) {
+            case NET_SSH2_MSG_USERAUTH_FAILURE:
+                // either the login is bad or the server employs multi-factor authentication
+                list($auth_methods) = Strings::unpackSSH2('L', $response);
+                $this->auth_methods_to_continue = $auth_methods;
+                return false;
+            case NET_SSH2_MSG_USERAUTH_SUCCESS:
+                $this->bitmap |= self::MASK_LOGIN;
+                return true;
+        }
+
+        $this->disconnect_helper(NET_SSH2_DISCONNECT_BY_APPLICATION);
+        throw new ConnectionClosedException('Unexpected response to publickey authentication pt 2');
+    }
+
+    /**
+     * Return the currently configured timeout
+     *
+     * @return int
+     */
+    public function getTimeout()
+    {
+        return $this->timeout;
+    }
+
+    /**
+     * Set Timeout
+     *
+     * $ssh->exec('ping 127.0.0.1'); on a Linux host will never return and will run indefinitely.  setTimeout() makes it so it'll timeout.
+     * Setting $timeout to false or 0 will mean there is no timeout.
+     *
+     * @param mixed $timeout
+     */
+    public function setTimeout($timeout)
+    {
+        $this->timeout = $this->curTimeout = $timeout;
+    }
+
+    /**
+     * Set Keep Alive
+     *
+     * Sends an SSH2_MSG_IGNORE message every x seconds, if x is a positive non-zero number.
+     *
+     * @param int $interval
+     */
+    public function setKeepAlive($interval)
+    {
+        $this->keepAlive = $interval;
+    }
+
+    /**
+     * Get the output from stdError
+     *
+     */
+    public function getStdError()
+    {
+        return $this->stdErrorLog;
+    }
+
+    /**
+     * Execute Command
+     *
+     * If $callback is set to false then \phpseclib3\Net\SSH2::get_channel_packet(self::CHANNEL_EXEC) will need to be called manually.
+     * In all likelihood, this is not a feature you want to be taking advantage of.
+     *
+     * @param string $command
+     * @return string|bool
+     * @psalm-return ($callback is callable ? bool : string|bool)
+     * @throws \RuntimeException on connection error
+     */
+    public function exec($command, callable $callback = null)
+    {
+        $this->curTimeout = $this->timeout;
+        $this->is_timeout = false;
+        $this->stdErrorLog = '';
+
+        if (!$this->isAuthenticated()) {
+            return false;
+        }
+
+        //if ($this->isPTYOpen()) {
+        //    throw new \RuntimeException('If you want to run multiple exec()\'s you will need to disable (and re-enable if appropriate) a PTY for each one.');
+        //}
+
+        $this->open_channel(self::CHANNEL_EXEC);
+
+        if ($this->request_pty === true) {
+            $terminal_modes = pack('C', NET_SSH2_TTY_OP_END);
+            $packet = Strings::packSSH2(
+                'CNsCsN4s',
+                NET_SSH2_MSG_CHANNEL_REQUEST,
+                $this->server_channels[self::CHANNEL_EXEC],
+                'pty-req',
+                1,
+                $this->term,
+                $this->windowColumns,
+                $this->windowRows,
+                0,
+                0,
+                $terminal_modes
+            );
+
+            $this->send_binary_packet($packet);
+
+            $this->channel_status[self::CHANNEL_EXEC] = NET_SSH2_MSG_CHANNEL_REQUEST;
+            if (!$this->get_channel_packet(self::CHANNEL_EXEC)) {
+                $this->disconnect_helper(NET_SSH2_DISCONNECT_BY_APPLICATION);
+                throw new \RuntimeException('Unable to request pseudo-terminal');
+            }
+        }
+
+        // sending a pty-req SSH_MSG_CHANNEL_REQUEST message is unnecessary and, in fact, in most cases, slows things
+        // down.  the one place where it might be desirable is if you're doing something like \phpseclib3\Net\SSH2::exec('ping localhost &').
+        // with a pty-req SSH_MSG_CHANNEL_REQUEST, exec() will return immediately and the ping process will then
+        // then immediately terminate.  without such a request exec() will loop indefinitely.  the ping process won't end but
+        // neither will your script.
+
+        // although, in theory, the size of SSH_MSG_CHANNEL_REQUEST could exceed the maximum packet size established by
+        // SSH_MSG_CHANNEL_OPEN_CONFIRMATION, RFC4254#section-5.1 states that the "maximum packet size" refers to the
+        // "maximum size of an individual data packet". ie. SSH_MSG_CHANNEL_DATA.  RFC4254#section-5.2 corroborates.
+        $packet = Strings::packSSH2(
+            'CNsCs',
+            NET_SSH2_MSG_CHANNEL_REQUEST,
+            $this->server_channels[self::CHANNEL_EXEC],
+            'exec',
+            1,
+            $command
+        );
+        $this->send_binary_packet($packet);
+
+        $this->channel_status[self::CHANNEL_EXEC] = NET_SSH2_MSG_CHANNEL_REQUEST;
+
+        if (!$this->get_channel_packet(self::CHANNEL_EXEC)) {
+            return false;
+        }
+
+        $this->channel_status[self::CHANNEL_EXEC] = NET_SSH2_MSG_CHANNEL_DATA;
+
+        if ($this->request_pty === true) {
+            $this->channel_id_last_interactive = self::CHANNEL_EXEC;
+            return true;
+        }
+
+        $output = '';
+        while (true) {
+            $temp = $this->get_channel_packet(self::CHANNEL_EXEC);
+            switch (true) {
+                case $temp === true:
+                    return is_callable($callback) ? true : $output;
+                case $temp === false:
+                    return false;
+                default:
+                    if (is_callable($callback)) {
+                        if ($callback($temp) === true) {
+                            $this->close_channel(self::CHANNEL_EXEC);
+                            return true;
+                        }
+                    } else {
+                        $output .= $temp;
+                    }
+            }
+        }
+    }
+
+    /**
+     * How many channels are currently open?
+     *
+     * @return int
+     */
+    public function getOpenChannelCount()
+    {
+        return $this->channelCount;
+    }
+
+    /**
+     * Opens a channel
+     *
+     * @param string $channel
+     * @param bool $skip_extended
+     * @return bool
+     */
+    protected function open_channel($channel, $skip_extended = false)
+    {
+        if (isset($this->channel_status[$channel]) && $this->channel_status[$channel] != NET_SSH2_MSG_CHANNEL_CLOSE) {
+            throw new \RuntimeException('Please close the channel (' . $channel . ') before trying to open it again');
+        }
+
+        $this->channelCount++;
+
+        if ($this->channelCount > 1 && $this->errorOnMultipleChannels) {
+            throw new \RuntimeException("Ubuntu's OpenSSH from 5.8 to 6.9 doesn't work with multiple channels");
+        }
+
+        // RFC4254 defines the (client) window size as "bytes the other party can send before it must wait for the window to
+        // be adjusted".  0x7FFFFFFF is, at 2GB, the max size.  technically, it should probably be decremented, but,
+        // honestly, if you're transferring more than 2GB, you probably shouldn't be using phpseclib, anyway.
+        // see http://tools.ietf.org/html/rfc4254#section-5.2 for more info
+        $this->window_size_server_to_client[$channel] = $this->window_size;
+        // 0x8000 is the maximum max packet size, per http://tools.ietf.org/html/rfc4253#section-6.1, although since PuTTy
+        // uses 0x4000, that's what will be used here, as well.
+        $packet_size = 0x4000;
+
+        $packet = Strings::packSSH2(
+            'CsN3',
+            NET_SSH2_MSG_CHANNEL_OPEN,
+            'session',
+            $channel,
+            $this->window_size_server_to_client[$channel],
+            $packet_size
+        );
+
+        $this->send_binary_packet($packet);
+
+        $this->channel_status[$channel] = NET_SSH2_MSG_CHANNEL_OPEN;
+
+        return $this->get_channel_packet($channel, $skip_extended);
+    }
+
+    /**
+     * Creates an interactive shell
+     *
+     * Returns bool(true) if the shell was opened.
+     * Returns bool(false) if the shell was already open.
+     *
+     * @see self::isShellOpen()
+     * @see self::read()
+     * @see self::write()
+     * @return bool
+     * @throws InsufficientSetupException if not authenticated
+     * @throws \UnexpectedValueException on receipt of unexpected packets
+     * @throws \RuntimeException on other errors
+     */
+    public function openShell()
+    {
+        if (!$this->isAuthenticated()) {
+            throw new InsufficientSetupException('Operation disallowed prior to login()');
+        }
+
+        $this->open_channel(self::CHANNEL_SHELL);
+
+        $terminal_modes = pack('C', NET_SSH2_TTY_OP_END);
+        $packet = Strings::packSSH2(
+            'CNsbsN4s',
+            NET_SSH2_MSG_CHANNEL_REQUEST,
+            $this->server_channels[self::CHANNEL_SHELL],
+            'pty-req',
+            true, // want reply
+            $this->term,
+            $this->windowColumns,
+            $this->windowRows,
+            0,
+            0,
+            $terminal_modes
+        );
+
+        $this->send_binary_packet($packet);
+
+        $this->channel_status[self::CHANNEL_SHELL] = NET_SSH2_MSG_CHANNEL_REQUEST;
+
+        if (!$this->get_channel_packet(self::CHANNEL_SHELL)) {
+            throw new \RuntimeException('Unable to request pty');
+        }
+
+        $packet = Strings::packSSH2(
+            'CNsb',
+            NET_SSH2_MSG_CHANNEL_REQUEST,
+            $this->server_channels[self::CHANNEL_SHELL],
+            'shell',
+            true // want reply
+        );
+        $this->send_binary_packet($packet);
+
+        $response = $this->get_channel_packet(self::CHANNEL_SHELL);
+        if ($response === false) {
+            throw new \RuntimeException('Unable to request shell');
+        }
+
+        $this->channel_status[self::CHANNEL_SHELL] = NET_SSH2_MSG_CHANNEL_DATA;
+
+        $this->channel_id_last_interactive = self::CHANNEL_SHELL;
+
+        $this->bitmap |= self::MASK_SHELL;
+
+        return true;
+    }
+
+    /**
+     * Return the channel to be used with read(), write(), and reset(), if none were specified
+     * @deprecated for lack of transparency in intended channel target, to be potentially replaced
+     *             with method which guarantees open-ness of all yielded channels and throws
+     *             error for multiple open channels
+     * @see self::read()
+     * @see self::write()
+     * @return int
+     */
+    private function get_interactive_channel()
+    {
+        switch (true) {
+            case $this->is_channel_status_data(self::CHANNEL_SUBSYSTEM):
+                return self::CHANNEL_SUBSYSTEM;
+            case $this->is_channel_status_data(self::CHANNEL_EXEC):
+                return self::CHANNEL_EXEC;
+            default:
+                return self::CHANNEL_SHELL;
+        }
+    }
+
+    /**
+     * Indicates the DATA status on the given channel
+     *
+     * @param int $channel The channel number to evaluate
+     * @return bool
+     */
+    private function is_channel_status_data($channel)
+    {
+        return isset($this->channel_status[$channel]) && $this->channel_status[$channel] == NET_SSH2_MSG_CHANNEL_DATA;
+    }
+
+    /**
+     * Return an available open channel
+     *
+     * @return int
+     */
+    private function get_open_channel()
+    {
+        $channel = self::CHANNEL_EXEC;
+        do {
+            if (isset($this->channel_status[$channel]) && $this->channel_status[$channel] == NET_SSH2_MSG_CHANNEL_OPEN) {
+                return $channel;
+            }
+        } while ($channel++ < self::CHANNEL_SUBSYSTEM);
+
+        return false;
+    }
+
+    /**
+     * Request agent forwarding of remote server
+     *
+     * @return bool
+     */
+    public function requestAgentForwarding()
+    {
+        $request_channel = $this->get_open_channel();
+        if ($request_channel === false) {
+            return false;
+        }
+
+        $packet = Strings::packSSH2(
+            'CNsC',
+            NET_SSH2_MSG_CHANNEL_REQUEST,
+            $this->server_channels[$request_channel],
+            'auth-agent-req@openssh.com',
+            1
+        );
+
+        $this->channel_status[$request_channel] = NET_SSH2_MSG_CHANNEL_REQUEST;
+
+        $this->send_binary_packet($packet);
+
+        if (!$this->get_channel_packet($request_channel)) {
+            return false;
+        }
+
+        $this->channel_status[$request_channel] = NET_SSH2_MSG_CHANNEL_OPEN;
+
+        return true;
+    }
+
+    /**
+     * Returns the output of an interactive shell
+     *
+     * Returns when there's a match for $expect, which can take the form of a string literal or,
+     * if $mode == self::READ_REGEX, a regular expression.
+     *
+     * If not specifying a channel, an open interactive channel will be selected, or, if there are
+     * no open channels, an interactive shell will be created. If there are multiple open
+     * interactive channels, a legacy behavior will apply in which channel selection prioritizes
+     * an active subsystem, the exec pty, and, lastly, the shell. If using multiple interactive
+     * channels, callers are discouraged from relying on this legacy behavior and should specify
+     * the intended channel.
+     *
+     * @see self::write()
+     * @param string $expect
+     * @param int $mode One of the self::READ_* constants
+     * @param int|null $channel Channel id returned by self::getInteractiveChannelId()
+     * @return string|bool|null
+     * @throws \RuntimeException on connection error
+     * @throws InsufficientSetupException on unexpected channel status, possibly due to closure
+     */
+    public function read($expect = '', $mode = self::READ_SIMPLE, $channel = null)
+    {
+        if (!$this->isAuthenticated()) {
+            throw new InsufficientSetupException('Operation disallowed prior to login()');
+        }
+
+        $this->curTimeout = $this->timeout;
+        $this->is_timeout = false;
+
+        if ($channel === null) {
+            $channel = $this->get_interactive_channel();
+        }
+
+        if (!$this->is_channel_status_data($channel) && empty($this->channel_buffers[$channel])) {
+            if ($channel != self::CHANNEL_SHELL) {
+                throw new InsufficientSetupException('Data is not available on channel');
+            } elseif (!$this->openShell()) {
+                throw new \RuntimeException('Unable to initiate an interactive shell session');
+            }
+        }
+
+        if ($mode == self::READ_NEXT) {
+            return $this->get_channel_packet($channel);
+        }
+
+        $match = $expect;
+        while (true) {
+            if ($mode == self::READ_REGEX) {
+                preg_match($expect, substr($this->interactiveBuffer, -1024), $matches);
+                $match = isset($matches[0]) ? $matches[0] : '';
+            }
+            $pos = strlen($match) ? strpos($this->interactiveBuffer, $match) : false;
+            if ($pos !== false) {
+                return Strings::shift($this->interactiveBuffer, $pos + strlen($match));
+            }
+            $response = $this->get_channel_packet($channel);
+            if ($response === true) {
+                return Strings::shift($this->interactiveBuffer, strlen($this->interactiveBuffer));
+            }
+
+            $this->interactiveBuffer .= $response;
+        }
+    }
+
+    /**
+     * Inputs a command into an interactive shell.
+     *
+     * If not specifying a channel, an open interactive channel will be selected, or, if there are
+     * no open channels, an interactive shell will be created. If there are multiple open
+     * interactive channels, a legacy behavior will apply in which channel selection prioritizes
+     * an active subsystem, the exec pty, and, lastly, the shell. If using multiple interactive
+     * channels, callers are discouraged from relying on this legacy behavior and should specify
+     * the intended channel.
+     *
+     * @see SSH2::read()
+     * @param string $cmd
+     * @param int|null $channel Channel id returned by self::getInteractiveChannelId()
+     * @return void
+     * @throws \RuntimeException on connection error
+     * @throws InsufficientSetupException on unexpected channel status, possibly due to closure
+     */
+    public function write($cmd, $channel = null)
+    {
+        if (!$this->isAuthenticated()) {
+            throw new InsufficientSetupException('Operation disallowed prior to login()');
+        }
+
+        if ($channel === null) {
+            $channel = $this->get_interactive_channel();
+        }
+
+        if (!$this->is_channel_status_data($channel)) {
+            if ($channel != self::CHANNEL_SHELL) {
+                throw new InsufficientSetupException('Data is not available on channel');
+            } elseif (!$this->openShell()) {
+                throw new \RuntimeException('Unable to initiate an interactive shell session');
+            }
+        }
+
+        $this->send_channel_packet($channel, $cmd);
+    }
+
+    /**
+     * Start a subsystem.
+     *
+     * Right now only one subsystem at a time is supported. To support multiple subsystem's stopSubsystem() could accept
+     * a string that contained the name of the subsystem, but at that point, only one subsystem of each type could be opened.
+     * To support multiple subsystem's of the same name maybe it'd be best if startSubsystem() generated a new channel id and
+     * returns that and then that that was passed into stopSubsystem() but that'll be saved for a future date and implemented
+     * if there's sufficient demand for such a feature.
+     *
+     * @see self::stopSubsystem()
+     * @param string $subsystem
+     * @return bool
+     */
+    public function startSubsystem($subsystem)
+    {
+        $this->open_channel(self::CHANNEL_SUBSYSTEM);
+
+        $packet = Strings::packSSH2(
+            'CNsCs',
+            NET_SSH2_MSG_CHANNEL_REQUEST,
+            $this->server_channels[self::CHANNEL_SUBSYSTEM],
+            'subsystem',
+            1,
+            $subsystem
+        );
+        $this->send_binary_packet($packet);
+
+        $this->channel_status[self::CHANNEL_SUBSYSTEM] = NET_SSH2_MSG_CHANNEL_REQUEST;
+
+        if (!$this->get_channel_packet(self::CHANNEL_SUBSYSTEM)) {
+            return false;
+        }
+
+        $this->channel_status[self::CHANNEL_SUBSYSTEM] = NET_SSH2_MSG_CHANNEL_DATA;
+
+        $this->channel_id_last_interactive = self::CHANNEL_SUBSYSTEM;
+
+        return true;
+    }
+
+    /**
+     * Stops a subsystem.
+     *
+     * @see self::startSubsystem()
+     * @return bool
+     */
+    public function stopSubsystem()
+    {
+        if ($this->isInteractiveChannelOpen(self::CHANNEL_SUBSYSTEM)) {
+            $this->close_channel(self::CHANNEL_SUBSYSTEM);
+        }
+        return true;
+    }
+
+    /**
+     * Closes a channel
+     *
+     * If read() timed out you might want to just close the channel and have it auto-restart on the next read() call
+     *
+     * If not specifying a channel, an open interactive channel will be selected. If there are
+     * multiple open interactive channels, a legacy behavior will apply in which channel selection
+     * prioritizes an active subsystem, the exec pty, and, lastly, the shell. If using multiple
+     * interactive channels, callers are discouraged from relying on this legacy behavior and
+     * should specify the intended channel.
+     *
+     * @param int|null $channel Channel id returned by self::getInteractiveChannelId()
+     * @return void
+     */
+    public function reset($channel = null)
+    {
+        if ($channel === null) {
+            $channel = $this->get_interactive_channel();
+        }
+        if ($this->isInteractiveChannelOpen($channel)) {
+            $this->close_channel($channel);
+        }
+    }
+
+    /**
+     * Is timeout?
+     *
+     * Did exec() or read() return because they timed out or because they encountered the end?
+     *
+     */
+    public function isTimeout()
+    {
+        return $this->is_timeout;
+    }
+
+    /**
+     * Disconnect
+     *
+     */
+    public function disconnect()
+    {
+        $this->disconnect_helper(NET_SSH2_DISCONNECT_BY_APPLICATION);
+        if (isset($this->realtime_log_file) && is_resource($this->realtime_log_file)) {
+            fclose($this->realtime_log_file);
+        }
+        unset(self::$connections[$this->getResourceId()]);
+    }
+
+    /**
+     * Destructor.
+     *
+     * Will be called, automatically, if you're supporting just PHP5.  If you're supporting PHP4, you'll need to call
+     * disconnect().
+     *
+     */
+    public function __destruct()
+    {
+        $this->disconnect();
+    }
+
+    /**
+     * Is the connection still active?
+     *
+     * $level has 3x possible values:
+     * 0 (default): phpseclib takes a passive approach to see if the connection is still active by calling feof()
+     *    on the socket
+     * 1: phpseclib takes an active approach to see if the connection is still active by sending an SSH_MSG_IGNORE
+     *    packet that doesn't require a response
+     * 2: phpseclib takes an active approach to see if the connection is still active by sending an SSH_MSG_CHANNEL_OPEN
+     *    packet and imediately trying to close that channel. some routers, in particular, however, will only let you
+     *    open one channel, so this approach could yield false positives
+     *
+     * @param int $level
+     * @return bool
+     */
+    public function isConnected($level = 0)
+    {
+        if (!is_int($level) || $level < 0 || $level > 2) {
+            throw new \InvalidArgumentException('$level must be 0, 1 or 2');
+        }
+
+        if ($level == 0) {
+            return ($this->bitmap & self::MASK_CONNECTED) && is_resource($this->fsock) && !feof($this->fsock);
+        }
+        try {
+            if ($level == 1) {
+                $this->send_binary_packet(pack('CN', NET_SSH2_MSG_IGNORE, 0));
+            } else {
+                $this->open_channel(self::CHANNEL_KEEP_ALIVE);
+                $this->close_channel(self::CHANNEL_KEEP_ALIVE);
+            }
+            return true;
+        } catch (\Exception $e) {
+            return false;
+        }
+    }
+
+    /**
+     * Have you successfully been logged in?
+     *
+     * @return bool
+     */
+    public function isAuthenticated()
+    {
+        return (bool) ($this->bitmap & self::MASK_LOGIN);
+    }
+
+    /**
+     * Is the interactive shell active?
+     *
+     * @return bool
+     */
+    public function isShellOpen()
+    {
+        return $this->isInteractiveChannelOpen(self::CHANNEL_SHELL);
+    }
+
+    /**
+     * Is the exec pty active?
+     *
+     * @return bool
+     */
+    public function isPTYOpen()
+    {
+        return $this->isInteractiveChannelOpen(self::CHANNEL_EXEC);
+    }
+
+    /**
+     * Is the given interactive channel active?
+     *
+     * @param int $channel Channel id returned by self::getInteractiveChannelId()
+     * @return bool
+     */
+    public function isInteractiveChannelOpen($channel)
+    {
+        return $this->isAuthenticated() && $this->is_channel_status_data($channel);
+    }
+
+    /**
+     * Returns a channel identifier, presently of the last interactive channel opened, regardless of current status.
+     * Returns 0 if no interactive channel has been opened.
+     *
+     * @see self::isInteractiveChannelOpen()
+     * @return int
+     */
+    public function getInteractiveChannelId()
+    {
+        return $this->channel_id_last_interactive;
+    }
+
+    /**
+     * Pings a server connection, or tries to reconnect if the connection has gone down
+     *
+     * Inspired by http://php.net/manual/en/mysqli.ping.php
+     *
+     * @return bool
+     */
+    public function ping()
+    {
+        if (!$this->isAuthenticated()) {
+            if (!empty($this->auth)) {
+                return $this->reconnect();
+            }
+            return false;
+        }
+
+        try {
+            $this->open_channel(self::CHANNEL_KEEP_ALIVE);
+        } catch (\RuntimeException $e) {
+            return $this->reconnect();
+        }
+
+        $this->close_channel(self::CHANNEL_KEEP_ALIVE);
+        return true;
+    }
+
+    /**
+     * In situ reconnect method
+     *
+     * @return boolean
+     */
+    private function reconnect()
+    {
+        $this->reset_connection(NET_SSH2_DISCONNECT_CONNECTION_LOST);
+        $this->retry_connect = true;
+        $this->connect();
+        foreach ($this->auth as $auth) {
+            $result = $this->login(...$auth);
+        }
+        return $result;
+    }
+
+    /**
+     * Resets a connection for re-use
+     *
+     * @param int $reason
+     */
+    protected function reset_connection($reason)
+    {
+        $this->disconnect_helper($reason);
+        $this->decrypt = $this->encrypt = false;
+        $this->decrypt_block_size = $this->encrypt_block_size = 8;
+        $this->hmac_check = $this->hmac_create = false;
+        $this->hmac_size = false;
+        $this->session_id = false;
+        $this->retry_connect = true;
+        $this->get_seq_no = $this->send_seq_no = 0;
+        $this->channel_status = [];
+        $this->channel_id_last_interactive = 0;
+    }
+
+    /**
+     * Gets Binary Packets
+     *
+     * See '6. Binary Packet Protocol' of rfc4253 for more info.
+     *
+     * @see self::_send_binary_packet()
+     * @param bool $skip_channel_filter
+     * @return bool|string
+     */
+    private function get_binary_packet($skip_channel_filter = false)
+    {
+        if ($skip_channel_filter) {
+            if (!is_resource($this->fsock)) {
+                throw new \InvalidArgumentException('fsock is not a resource.');
+            }
+            $read = [$this->fsock];
+            $write = $except = null;
+
+            if (!$this->curTimeout) {
+                if ($this->keepAlive <= 0) {
+                    static::stream_select($read, $write, $except, null);
+                } else {
+                    if (!static::stream_select($read, $write, $except, $this->keepAlive)) {
+                        $this->send_binary_packet(pack('CN', NET_SSH2_MSG_IGNORE, 0));
+                        return $this->get_binary_packet(true);
+                    }
+                }
+            } else {
+                if ($this->curTimeout < 0) {
+                    $this->is_timeout = true;
+                    return true;
+                }
+
+                $start = microtime(true);
+
+                if ($this->keepAlive > 0 && $this->keepAlive < $this->curTimeout) {
+                    if (!static::stream_select($read, $write, $except, $this->keepAlive)) {
+                        $this->send_binary_packet(pack('CN', NET_SSH2_MSG_IGNORE, 0));
+                        $elapsed = microtime(true) - $start;
+                        $this->curTimeout -= $elapsed;
+                        return $this->get_binary_packet(true);
+                    }
+                    $elapsed = microtime(true) - $start;
+                    $this->curTimeout -= $elapsed;
+                }
+
+                $sec = (int) floor($this->curTimeout);
+                $usec = (int) (1000000 * ($this->curTimeout - $sec));
+
+                // this can return a "stream_select(): unable to select [4]: Interrupted system call" error
+                if (!static::stream_select($read, $write, $except, $sec, $usec)) {
+                    $this->is_timeout = true;
+                    return true;
+                }
+                $elapsed = microtime(true) - $start;
+                $this->curTimeout -= $elapsed;
+            }
+        }
+
+        if (!is_resource($this->fsock) || feof($this->fsock)) {
+            $this->bitmap = 0;
+            $str = 'Connection closed (by server) prematurely';
+            if (isset($elapsed)) {
+                $str .= ' ' . $elapsed . 's';
+            }
+            throw new ConnectionClosedException($str);
+        }
+
+        $start = microtime(true);
+        if ($this->curTimeout) {
+            $sec = (int) floor($this->curTimeout);
+            $usec = (int) (1000000 * ($this->curTimeout - $sec));
+            stream_set_timeout($this->fsock, $sec, $usec);
+        }
+        $raw = stream_get_contents($this->fsock, $this->decrypt_block_size);
+
+        if (!strlen($raw)) {
+            $this->bitmap = 0;
+            throw new ConnectionClosedException('No data received from server');
+        }
+
+        if ($this->decrypt) {
+            switch ($this->decryptName) {
+                case 'aes128-gcm@openssh.com':
+                case 'aes256-gcm@openssh.com':
+                    $this->decrypt->setNonce(
+                        $this->decryptFixedPart .
+                        $this->decryptInvocationCounter
+                    );
+                    Strings::increment_str($this->decryptInvocationCounter);
+                    $this->decrypt->setAAD($temp = Strings::shift($raw, 4));
+                    extract(unpack('Npacket_length', $temp));
+                    /**
+                     * @var integer $packet_length
+                     */
+
+                    $raw .= $this->read_remaining_bytes($packet_length - $this->decrypt_block_size + 4);
+                    $stop = microtime(true);
+                    $tag = stream_get_contents($this->fsock, $this->decrypt_block_size);
+                    $this->decrypt->setTag($tag);
+                    $raw = $this->decrypt->decrypt($raw);
+                    $raw = $temp . $raw;
+                    $remaining_length = 0;
+                    break;
+                case 'chacha20-poly1305@openssh.com':
+                    // This should be impossible, but we are checking anyway to narrow the type for Psalm.
+                    if (!($this->decrypt instanceof ChaCha20)) {
+                        throw new \LogicException('$this->decrypt is not a ' . ChaCha20::class);
+                    }
+
+                    $nonce = pack('N2', 0, $this->get_seq_no);
+
+                    $this->lengthDecrypt->setNonce($nonce);
+                    $temp = $this->lengthDecrypt->decrypt($aad = Strings::shift($raw, 4));
+                    extract(unpack('Npacket_length', $temp));
+                    /**
+                     * @var integer $packet_length
+                     */
+
+                    $raw .= $this->read_remaining_bytes($packet_length - $this->decrypt_block_size + 4);
+                    $stop = microtime(true);
+                    $tag = stream_get_contents($this->fsock, 16);
+
+                    $this->decrypt->setNonce($nonce);
+                    $this->decrypt->setCounter(0);
+                    // this is the same approach that's implemented in Salsa20::createPoly1305Key()
+                    // but we don't want to use the same AEAD construction that RFC8439 describes
+                    // for ChaCha20-Poly1305 so we won't rely on it (see Salsa20::poly1305())
+                    $this->decrypt->setPoly1305Key(
+                        $this->decrypt->encrypt(str_repeat("\0", 32))
+                    );
+                    $this->decrypt->setAAD($aad);
+                    $this->decrypt->setCounter(1);
+                    $this->decrypt->setTag($tag);
+                    $raw = $this->decrypt->decrypt($raw);
+                    $raw = $temp . $raw;
+                    $remaining_length = 0;
+                    break;
+                default:
+                    if (!$this->hmac_check instanceof Hash || !$this->hmac_check_etm) {
+                        $raw = $this->decrypt->decrypt($raw);
+                        break;
+                    }
+                    extract(unpack('Npacket_length', $temp = Strings::shift($raw, 4)));
+                    /**
+                     * @var integer $packet_length
+                     */
+                    $raw .= $this->read_remaining_bytes($packet_length - $this->decrypt_block_size + 4);
+                    $stop = microtime(true);
+                    $encrypted = $temp . $raw;
+                    $raw = $temp . $this->decrypt->decrypt($raw);
+                    $remaining_length = 0;
+            }
+        }
+
+        if (strlen($raw) < 5) {
+            $this->bitmap = 0;
+            throw new \RuntimeException('Plaintext is too short');
+        }
+        extract(unpack('Npacket_length/Cpadding_length', Strings::shift($raw, 5)));
+        /**
+         * @var integer $packet_length
+         * @var integer $padding_length
+         */
+
+        if (!isset($remaining_length)) {
+            $remaining_length = $packet_length + 4 - $this->decrypt_block_size;
+        }
+
+        $buffer = $this->read_remaining_bytes($remaining_length);
+
+        if (!isset($stop)) {
+            $stop = microtime(true);
+        }
+        if (strlen($buffer)) {
+            $raw .= $this->decrypt ? $this->decrypt->decrypt($buffer) : $buffer;
+        }
+
+        $payload = Strings::shift($raw, $packet_length - $padding_length - 1);
+        $padding = Strings::shift($raw, $padding_length); // should leave $raw empty
+
+        if ($this->hmac_check instanceof Hash) {
+            $hmac = stream_get_contents($this->fsock, $this->hmac_size);
+            if ($hmac === false || strlen($hmac) != $this->hmac_size) {
+                $this->disconnect_helper(NET_SSH2_DISCONNECT_MAC_ERROR);
+                throw new \RuntimeException('Error reading socket');
+            }
+
+            $reconstructed = !$this->hmac_check_etm ?
+                pack('NCa*', $packet_length, $padding_length, $payload . $padding) :
+                $encrypted;
+            if (($this->hmac_check->getHash() & "\xFF\xFF\xFF\xFF") == 'umac') {
+                $this->hmac_check->setNonce("\0\0\0\0" . pack('N', $this->get_seq_no));
+                if ($hmac != $this->hmac_check->hash($reconstructed)) {
+                    $this->disconnect_helper(NET_SSH2_DISCONNECT_MAC_ERROR);
+                    throw new \RuntimeException('Invalid UMAC');
+                }
+            } else {
+                if ($hmac != $this->hmac_check->hash(pack('Na*', $this->get_seq_no, $reconstructed))) {
+                    $this->disconnect_helper(NET_SSH2_DISCONNECT_MAC_ERROR);
+                    throw new \RuntimeException('Invalid HMAC');
+                }
+            }
+        }
+
+        switch ($this->decompress) {
+            case self::NET_SSH2_COMPRESSION_ZLIB_AT_OPENSSH:
+                if (!$this->isAuthenticated()) {
+                    break;
+                }
+                // fall-through
+            case self::NET_SSH2_COMPRESSION_ZLIB:
+                if ($this->regenerate_decompression_context) {
+                    $this->regenerate_decompression_context = false;
+
+                    $cmf = ord($payload[0]);
+                    $cm = $cmf & 0x0F;
+                    if ($cm != 8) { // deflate
+                        user_error("Only CM = 8 ('deflate') is supported ($cm)");
+                    }
+                    $cinfo = ($cmf & 0xF0) >> 4;
+                    if ($cinfo > 7) {
+                        user_error("CINFO above 7 is not allowed ($cinfo)");
+                    }
+                    $windowSize = 1 << ($cinfo + 8);
+
+                    $flg = ord($payload[1]);
+                    //$fcheck = $flg && 0x0F;
+                    if ((($cmf << 8) | $flg) % 31) {
+                        user_error('fcheck failed');
+                    }
+                    $fdict = boolval($flg & 0x20);
+                    $flevel = ($flg & 0xC0) >> 6;
+
+                    $this->decompress_context = inflate_init(ZLIB_ENCODING_RAW, ['window' => $cinfo + 8]);
+                    $payload = substr($payload, 2);
+                }
+                if ($this->decompress_context) {
+                    $payload = inflate_add($this->decompress_context, $payload, ZLIB_PARTIAL_FLUSH);
+                }
+        }
+
+        $this->get_seq_no++;
+
+        if (defined('NET_SSH2_LOGGING')) {
+            $current = microtime(true);
+            $message_number = isset(self::$message_numbers[ord($payload[0])]) ? self::$message_numbers[ord($payload[0])] : 'UNKNOWN (' . ord($payload[0]) . ')';
+            $message_number = '<- ' . $message_number .
+                              ' (since last: ' . round($current - $this->last_packet, 4) . ', network: ' . round($stop - $start, 4) . 's)';
+            $this->append_log($message_number, $payload);
+            $this->last_packet = $current;
+        }
+
+        return $this->filter($payload, $skip_channel_filter);
+    }
+
+    /**
+     * Read Remaining Bytes
+     *
+     * @see self::get_binary_packet()
+     * @param int $remaining_length
+     * @return string
+     */
+    private function read_remaining_bytes($remaining_length)
+    {
+        if (!$remaining_length) {
+            return '';
+        }
+
+        $adjustLength = false;
+        if ($this->decrypt) {
+            switch (true) {
+                case $this->decryptName == 'aes128-gcm@openssh.com':
+                case $this->decryptName == 'aes256-gcm@openssh.com':
+                case $this->decryptName == 'chacha20-poly1305@openssh.com':
+                case $this->hmac_check instanceof Hash && $this->hmac_check_etm:
+                    $remaining_length += $this->decrypt_block_size - 4;
+                    $adjustLength = true;
+            }
+        }
+
+        // quoting <http://tools.ietf.org/html/rfc4253#section-6.1>,
+        // "implementations SHOULD check that the packet length is reasonable"
+        // PuTTY uses 0x9000 as the actual max packet size and so to shall we
+        // don't do this when GCM mode is used since GCM mode doesn't encrypt the length
+        if ($remaining_length < -$this->decrypt_block_size || $remaining_length > 0x9000 || $remaining_length % $this->decrypt_block_size != 0) {
+            if (!$this->bad_key_size_fix && self::bad_algorithm_candidate($this->decrypt ? $this->decryptName : '') && !($this->bitmap & SSH2::MASK_LOGIN)) {
+                $this->bad_key_size_fix = true;
+                $this->reset_connection(NET_SSH2_DISCONNECT_KEY_EXCHANGE_FAILED);
+                return false;
+            }
+            throw new \RuntimeException('Invalid size');
+        }
+
+        if ($adjustLength) {
+            $remaining_length -= $this->decrypt_block_size - 4;
+        }
+
+        $buffer = '';
+        while ($remaining_length > 0) {
+            $temp = stream_get_contents($this->fsock, $remaining_length);
+            if ($temp === false || feof($this->fsock)) {
+                $this->disconnect_helper(NET_SSH2_DISCONNECT_CONNECTION_LOST);
+                throw new \RuntimeException('Error reading from socket');
+            }
+            $buffer .= $temp;
+            $remaining_length -= strlen($temp);
+        }
+
+        return $buffer;
+    }
+
+    /**
+     * Filter Binary Packets
+     *
+     * Because some binary packets need to be ignored...
+     *
+     * @see self::_get_binary_packet()
+     * @param string $payload
+     * @param bool $skip_channel_filter
+     * @return string|bool
+     */
+    private function filter($payload, $skip_channel_filter)
+    {
+        switch (ord($payload[0])) {
+            case NET_SSH2_MSG_DISCONNECT:
+                Strings::shift($payload, 1);
+                list($reason_code, $message) = Strings::unpackSSH2('Ns', $payload);
+                $this->errors[] = 'SSH_MSG_DISCONNECT: ' . self::$disconnect_reasons[$reason_code] . "\r\n$message";
+                $this->bitmap = 0;
+                return false;
+            case NET_SSH2_MSG_IGNORE:
+                $this->extra_packets++;
+                $payload = $this->get_binary_packet($skip_channel_filter);
+                break;
+            case NET_SSH2_MSG_DEBUG:
+                $this->extra_packets++;
+                Strings::shift($payload, 2); // second byte is "always_display"
+                list($message) = Strings::unpackSSH2('s', $payload);
+                $this->errors[] = "SSH_MSG_DEBUG: $message";
+                $payload = $this->get_binary_packet($skip_channel_filter);
+                break;
+            case NET_SSH2_MSG_UNIMPLEMENTED:
+                return false;
+            case NET_SSH2_MSG_KEXINIT:
+                // this is here for key re-exchanges after the initial key exchange
+                if ($this->session_id !== false) {
+                    if (!$this->key_exchange($payload)) {
+                        $this->bitmap = 0;
+                        return false;
+                    }
+                    $payload = $this->get_binary_packet($skip_channel_filter);
+                }
+        }
+
+        // see http://tools.ietf.org/html/rfc4252#section-5.4; only called when the encryption has been activated and when we haven't already logged in
+        if (($this->bitmap & self::MASK_CONNECTED) && !$this->isAuthenticated() && !is_bool($payload) && ord($payload[0]) == NET_SSH2_MSG_USERAUTH_BANNER) {
+            Strings::shift($payload, 1);
+            list($this->banner_message) = Strings::unpackSSH2('s', $payload);
+            $payload = $this->get_binary_packet();
+        }
+
+        // only called when we've already logged in
+        if (($this->bitmap & self::MASK_CONNECTED) && $this->isAuthenticated()) {
+            if (is_bool($payload)) {
+                return $payload;
+            }
+
+            switch (ord($payload[0])) {
+                case NET_SSH2_MSG_CHANNEL_REQUEST:
+                    if (strlen($payload) == 31) {
+                        extract(unpack('cpacket_type/Nchannel/Nlength', $payload));
+                        if (substr($payload, 9, $length) == 'keepalive@openssh.com' && isset($this->server_channels[$channel])) {
+                            if (ord(substr($payload, 9 + $length))) { // want reply
+                                $this->send_binary_packet(pack('CN', NET_SSH2_MSG_CHANNEL_SUCCESS, $this->server_channels[$channel]));
+                            }
+                            $payload = $this->get_binary_packet($skip_channel_filter);
+                        }
+                    }
+                    break;
+                case NET_SSH2_MSG_CHANNEL_DATA:
+                case NET_SSH2_MSG_CHANNEL_EXTENDED_DATA:
+                case NET_SSH2_MSG_CHANNEL_CLOSE:
+                case NET_SSH2_MSG_CHANNEL_EOF:
+                    if (!$skip_channel_filter && !empty($this->server_channels)) {
+                        $this->binary_packet_buffer = $payload;
+                        $this->get_channel_packet(true);
+                        $payload = $this->get_binary_packet();
+                    }
+                    break;
+                case NET_SSH2_MSG_GLOBAL_REQUEST: // see http://tools.ietf.org/html/rfc4254#section-4
+                    Strings::shift($payload, 1);
+                    list($request_name) = Strings::unpackSSH2('s', $payload);
+                    $this->errors[] = "SSH_MSG_GLOBAL_REQUEST: $request_name";
+
+                    try {
+                        $this->send_binary_packet(pack('C', NET_SSH2_MSG_REQUEST_FAILURE));
+                    } catch (\RuntimeException $e) {
+                        return $this->disconnect_helper(NET_SSH2_DISCONNECT_BY_APPLICATION);
+                    }
+
+                    $payload = $this->get_binary_packet($skip_channel_filter);
+                    break;
+                case NET_SSH2_MSG_CHANNEL_OPEN: // see http://tools.ietf.org/html/rfc4254#section-5.1
+                    Strings::shift($payload, 1);
+                    list($data, $server_channel) = Strings::unpackSSH2('sN', $payload);
+                    switch ($data) {
+                        case 'auth-agent':
+                        case 'auth-agent@openssh.com':
+                            if (isset($this->agent)) {
+                                $new_channel = self::CHANNEL_AGENT_FORWARD;
+
+                                list(
+                                    $remote_window_size,
+                                    $remote_maximum_packet_size
+                                ) = Strings::unpackSSH2('NN', $payload);
+
+                                $this->packet_size_client_to_server[$new_channel] = $remote_window_size;
+                                $this->window_size_server_to_client[$new_channel] = $remote_maximum_packet_size;
+                                $this->window_size_client_to_server[$new_channel] = $this->window_size;
+
+                                $packet_size = 0x4000;
+
+                                $packet = pack(
+                                    'CN4',
+                                    NET_SSH2_MSG_CHANNEL_OPEN_CONFIRMATION,
+                                    $server_channel,
+                                    $new_channel,
+                                    $packet_size,
+                                    $packet_size
+                                );
+
+                                $this->server_channels[$new_channel] = $server_channel;
+                                $this->channel_status[$new_channel] = NET_SSH2_MSG_CHANNEL_OPEN_CONFIRMATION;
+                                $this->send_binary_packet($packet);
+                            }
+                            break;
+                        default:
+                            $packet = Strings::packSSH2(
+                                'CN2ss',
+                                NET_SSH2_MSG_CHANNEL_OPEN_FAILURE,
+                                $server_channel,
+                                NET_SSH2_OPEN_ADMINISTRATIVELY_PROHIBITED,
+                                '', // description
+                                '' // language tag
+                            );
+
+                            try {
+                                $this->send_binary_packet($packet);
+                            } catch (\RuntimeException $e) {
+                                return $this->disconnect_helper(NET_SSH2_DISCONNECT_BY_APPLICATION);
+                            }
+                    }
+
+                    $payload = $this->get_binary_packet($skip_channel_filter);
+                    break;
+                case NET_SSH2_MSG_CHANNEL_WINDOW_ADJUST:
+                    Strings::shift($payload, 1);
+                    list($channel, $window_size) = Strings::unpackSSH2('NN', $payload);
+
+                    $this->window_size_client_to_server[$channel] += $window_size;
+
+                    $payload = ($this->bitmap & self::MASK_WINDOW_ADJUST) ? true : $this->get_binary_packet($skip_channel_filter);
+            }
+        }
+
+        return $payload;
+    }
+
+    /**
+     * Enable Quiet Mode
+     *
+     * Suppress stderr from output
+     *
+     */
+    public function enableQuietMode()
+    {
+        $this->quiet_mode = true;
+    }
+
+    /**
+     * Disable Quiet Mode
+     *
+     * Show stderr in output
+     *
+     */
+    public function disableQuietMode()
+    {
+        $this->quiet_mode = false;
+    }
+
+    /**
+     * Returns whether Quiet Mode is enabled or not
+     *
+     * @see self::enableQuietMode()
+     * @see self::disableQuietMode()
+     * @return bool
+     */
+    public function isQuietModeEnabled()
+    {
+        return $this->quiet_mode;
+    }
+
+    /**
+     * Enable request-pty when using exec()
+     *
+     */
+    public function enablePTY()
+    {
+        $this->request_pty = true;
+    }
+
+    /**
+     * Disable request-pty when using exec()
+     *
+     */
+    public function disablePTY()
+    {
+        if ($this->isPTYOpen()) {
+            $this->close_channel(self::CHANNEL_EXEC);
+        }
+        $this->request_pty = false;
+    }
+
+    /**
+     * Returns whether request-pty is enabled or not
+     *
+     * @see self::enablePTY()
+     * @see self::disablePTY()
+     * @return bool
+     */
+    public function isPTYEnabled()
+    {
+        return $this->request_pty;
+    }
+
+    /**
+     * Gets channel data
+     *
+     * Returns the data as a string. bool(true) is returned if:
+     *
+     * - the server closes the channel
+     * - if the connection times out
+     * - if the channel status is CHANNEL_OPEN and the response was CHANNEL_OPEN_CONFIRMATION
+     * - if the channel status is CHANNEL_REQUEST and the response was CHANNEL_SUCCESS
+     * - if the channel status is CHANNEL_CLOSE and the response was CHANNEL_CLOSE
+     *
+     * bool(false) is returned if:
+     *
+     * - if the channel status is CHANNEL_REQUEST and the response was CHANNEL_FAILURE
+     *
+     * @param int $client_channel
+     * @param bool $skip_extended
+     * @return mixed
+     * @throws \RuntimeException on connection error
+     */
+    protected function get_channel_packet($client_channel, $skip_extended = false)
+    {
+        if (!empty($this->channel_buffers[$client_channel])) {
+            switch ($this->channel_status[$client_channel]) {
+                case NET_SSH2_MSG_CHANNEL_REQUEST:
+                    foreach ($this->channel_buffers[$client_channel] as $i => $packet) {
+                        switch (ord($packet[0])) {
+                            case NET_SSH2_MSG_CHANNEL_SUCCESS:
+                            case NET_SSH2_MSG_CHANNEL_FAILURE:
+                                unset($this->channel_buffers[$client_channel][$i]);
+                                return substr($packet, 1);
+                        }
+                    }
+                    break;
+                default:
+                    return substr(array_shift($this->channel_buffers[$client_channel]), 1);
+            }
+        }
+
+        while (true) {
+            if ($this->binary_packet_buffer !== false) {
+                $response = $this->binary_packet_buffer;
+                $this->binary_packet_buffer = false;
+            } else {
+                $response = $this->get_binary_packet(true);
+                if ($response === true && $this->is_timeout) {
+                    if ($client_channel == self::CHANNEL_EXEC && !$this->request_pty) {
+                        $this->close_channel($client_channel);
+                    }
+                    return true;
+                }
+                if ($response === false) {
+                    $this->disconnect_helper(NET_SSH2_DISCONNECT_CONNECTION_LOST);
+                    throw new ConnectionClosedException('Connection closed by server');
+                }
+            }
+
+            if ($client_channel == -1 && $response === true) {
+                return true;
+            }
+            list($type, $channel) = Strings::unpackSSH2('CN', $response);
+
+            // will not be setup yet on incoming channel open request
+            if (isset($channel) && isset($this->channel_status[$channel]) && isset($this->window_size_server_to_client[$channel])) {
+                $this->window_size_server_to_client[$channel] -= strlen($response);
+
+                // resize the window, if appropriate
+                if ($this->window_size_server_to_client[$channel] < 0) {
+                // PuTTY does something more analogous to the following:
+                //if ($this->window_size_server_to_client[$channel] < 0x3FFFFFFF) {
+                    $packet = pack('CNN', NET_SSH2_MSG_CHANNEL_WINDOW_ADJUST, $this->server_channels[$channel], $this->window_resize);
+                    $this->send_binary_packet($packet);
+                    $this->window_size_server_to_client[$channel] += $this->window_resize;
+                }
+
+                switch ($type) {
+                    case NET_SSH2_MSG_CHANNEL_EXTENDED_DATA:
+                        /*
+                        if ($client_channel == self::CHANNEL_EXEC) {
+                            $this->send_channel_packet($client_channel, chr(0));
+                        }
+                        */
+                        // currently, there's only one possible value for $data_type_code: NET_SSH2_EXTENDED_DATA_STDERR
+                        list($data_type_code, $data) = Strings::unpackSSH2('Ns', $response);
+                        $this->stdErrorLog .= $data;
+                        if ($skip_extended || $this->quiet_mode) {
+                            continue 2;
+                        }
+                        if ($client_channel == $channel && $this->channel_status[$channel] == NET_SSH2_MSG_CHANNEL_DATA) {
+                            return $data;
+                        }
+                        $this->channel_buffers[$channel][] = chr($type) . $data;
+
+                        continue 2;
+                    case NET_SSH2_MSG_CHANNEL_REQUEST:
+                        if ($this->channel_status[$channel] == NET_SSH2_MSG_CHANNEL_CLOSE) {
+                            continue 2;
+                        }
+                        list($value) = Strings::unpackSSH2('s', $response);
+                        switch ($value) {
+                            case 'exit-signal':
+                                list(
+                                    , // FALSE
+                                    $signal_name,
+                                    , // core dumped
+                                    $error_message
+                                ) = Strings::unpackSSH2('bsbs', $response);
+
+                                $this->errors[] = "SSH_MSG_CHANNEL_REQUEST (exit-signal): $signal_name";
+                                if (strlen($error_message)) {
+                                    $this->errors[count($this->errors) - 1] .= "\r\n$error_message";
+                                }
+
+                                $this->send_binary_packet(pack('CN', NET_SSH2_MSG_CHANNEL_EOF, $this->server_channels[$client_channel]));
+                                $this->send_binary_packet(pack('CN', NET_SSH2_MSG_CHANNEL_CLOSE, $this->server_channels[$channel]));
+
+                                $this->channel_status[$channel] = NET_SSH2_MSG_CHANNEL_EOF;
+
+                                continue 3;
+                            case 'exit-status':
+                                list(, $this->exit_status) = Strings::unpackSSH2('CN', $response);
+
+                                // "The client MAY ignore these messages."
+                                // -- http://tools.ietf.org/html/rfc4254#section-6.10
+
+                                continue 3;
+                            default:
+                                // "Some systems may not implement signals, in which case they SHOULD ignore this message."
+                                //  -- http://tools.ietf.org/html/rfc4254#section-6.9
+                                continue 3;
+                        }
+                }
+
+                switch ($this->channel_status[$channel]) {
+                    case NET_SSH2_MSG_CHANNEL_OPEN:
+                        switch ($type) {
+                            case NET_SSH2_MSG_CHANNEL_OPEN_CONFIRMATION:
+                                list(
+                                    $this->server_channels[$channel],
+                                    $window_size,
+                                    $this->packet_size_client_to_server[$channel]
+                                ) = Strings::unpackSSH2('NNN', $response);
+
+                                if ($window_size < 0) {
+                                    $window_size &= 0x7FFFFFFF;
+                                    $window_size += 0x80000000;
+                                }
+                                $this->window_size_client_to_server[$channel] = $window_size;
+                                $result = $client_channel == $channel ? true : $this->get_channel_packet($client_channel, $skip_extended);
+                                $this->on_channel_open();
+                                return $result;
+                            case NET_SSH2_MSG_CHANNEL_OPEN_FAILURE:
+                                $this->disconnect_helper(NET_SSH2_DISCONNECT_BY_APPLICATION);
+                                throw new \RuntimeException('Unable to open channel');
+                            default:
+                                if ($client_channel == $channel) {
+                                    $this->disconnect_helper(NET_SSH2_DISCONNECT_BY_APPLICATION);
+                                    throw new \RuntimeException('Unexpected response to open request');
+                                }
+                                return $this->get_channel_packet($client_channel, $skip_extended);
+                        }
+                        break;
+                    case NET_SSH2_MSG_CHANNEL_REQUEST:
+                        switch ($type) {
+                            case NET_SSH2_MSG_CHANNEL_SUCCESS:
+                                return true;
+                            case NET_SSH2_MSG_CHANNEL_FAILURE:
+                                return false;
+                            case NET_SSH2_MSG_CHANNEL_DATA:
+                                list($data) = Strings::unpackSSH2('s', $response);
+                                $this->channel_buffers[$channel][] = chr($type) . $data;
+                                return $this->get_channel_packet($client_channel, $skip_extended);
+                            default:
+                                $this->disconnect_helper(NET_SSH2_DISCONNECT_BY_APPLICATION);
+                                throw new \RuntimeException('Unable to fulfill channel request');
+                        }
+                    case NET_SSH2_MSG_CHANNEL_CLOSE:
+                        if ($client_channel == $channel && $type == NET_SSH2_MSG_CHANNEL_CLOSE) {
+                            return true;
+                        }
+                        return $this->get_channel_packet($client_channel, $skip_extended);
+                }
+            }
+
+            // ie. $this->channel_status[$channel] == NET_SSH2_MSG_CHANNEL_DATA
+
+            switch ($type) {
+                case NET_SSH2_MSG_CHANNEL_DATA:
+                    /*
+                    if ($channel == self::CHANNEL_EXEC) {
+                        // SCP requires null packets, such as this, be sent.  further, in the case of the ssh.com SSH server
+                        // this actually seems to make things twice as fast.  more to the point, the message right after
+                        // SSH_MSG_CHANNEL_DATA (usually SSH_MSG_IGNORE) won't block for as long as it would have otherwise.
+                        // in OpenSSH it slows things down but only by a couple thousandths of a second.
+                        $this->send_channel_packet($channel, chr(0));
+                    }
+                    */
+                    list($data) = Strings::unpackSSH2('s', $response);
+
+                    if ($channel == self::CHANNEL_AGENT_FORWARD) {
+                        $agent_response = $this->agent->forwardData($data);
+                        if (!is_bool($agent_response)) {
+                            $this->send_channel_packet($channel, $agent_response);
+                        }
+                        break;
+                    }
+
+                    if ($client_channel == $channel) {
+                        return $data;
+                    }
+                    $this->channel_buffers[$channel][] = chr($type) . $data;
+                    break;
+                case NET_SSH2_MSG_CHANNEL_CLOSE:
+                    $this->curTimeout = 5;
+
+                    $this->close_channel_bitmap($channel);
+
+                    if ($this->channel_status[$channel] != NET_SSH2_MSG_CHANNEL_EOF) {
+                        $this->send_binary_packet(pack('CN', NET_SSH2_MSG_CHANNEL_CLOSE, $this->server_channels[$channel]));
+                    }
+
+                    $this->channel_status[$channel] = NET_SSH2_MSG_CHANNEL_CLOSE;
+                    $this->channelCount--;
+
+                    if ($client_channel == $channel) {
+                        return true;
+                    }
+                    // fall-through
+                case NET_SSH2_MSG_CHANNEL_EOF:
+                    break;
+                default:
+                    $this->disconnect_helper(NET_SSH2_DISCONNECT_BY_APPLICATION);
+                    throw new \RuntimeException("Error reading channel data ($type)");
+            }
+        }
+    }
+
+    /**
+     * Sends Binary Packets
+     *
+     * See '6. Binary Packet Protocol' of rfc4253 for more info.
+     *
+     * @param string $data
+     * @param string $logged
+     * @see self::_get_binary_packet()
+     * @return void
+     */
+    protected function send_binary_packet($data, $logged = null)
+    {
+        if (!is_resource($this->fsock) || feof($this->fsock)) {
+            $this->bitmap = 0;
+            throw new ConnectionClosedException('Connection closed prematurely');
+        }
+
+        if (!isset($logged)) {
+            $logged = $data;
+        }
+
+        switch ($this->compress) {
+            case self::NET_SSH2_COMPRESSION_ZLIB_AT_OPENSSH:
+                if (!$this->isAuthenticated()) {
+                    break;
+                }
+                // fall-through
+            case self::NET_SSH2_COMPRESSION_ZLIB:
+                if (!$this->regenerate_compression_context) {
+                    $header = '';
+                } else {
+                    $this->regenerate_compression_context = false;
+                    $this->compress_context = deflate_init(ZLIB_ENCODING_RAW, ['window' => 15]);
+                    $header = "\x78\x9C";
+                }
+                if ($this->compress_context) {
+                    $data = $header . deflate_add($this->compress_context, $data, ZLIB_PARTIAL_FLUSH);
+                }
+        }
+
+        // 4 (packet length) + 1 (padding length) + 4 (minimal padding amount) == 9
+        $packet_length = strlen($data) + 9;
+        if ($this->encrypt && $this->encrypt->usesNonce()) {
+            $packet_length -= 4;
+        }
+        // round up to the nearest $this->encrypt_block_size
+        $packet_length += (($this->encrypt_block_size - 1) * $packet_length) % $this->encrypt_block_size;
+        // subtracting strlen($data) is obvious - subtracting 5 is necessary because of packet_length and padding_length
+        $padding_length = $packet_length - strlen($data) - 5;
+        switch (true) {
+            case $this->encrypt && $this->encrypt->usesNonce():
+            case $this->hmac_create instanceof Hash && $this->hmac_create_etm:
+                $padding_length += 4;
+                $packet_length += 4;
+        }
+
+        $padding = Random::string($padding_length);
+
+        // we subtract 4 from packet_length because the packet_length field isn't supposed to include itself
+        $packet = pack('NCa*', $packet_length - 4, $padding_length, $data . $padding);
+
+        $hmac = '';
+        if ($this->hmac_create instanceof Hash && !$this->hmac_create_etm) {
+            if (($this->hmac_create->getHash() & "\xFF\xFF\xFF\xFF") == 'umac') {
+                $this->hmac_create->setNonce("\0\0\0\0" . pack('N', $this->send_seq_no));
+                $hmac = $this->hmac_create->hash($packet);
+            } else {
+                $hmac = $this->hmac_create->hash(pack('Na*', $this->send_seq_no, $packet));
+            }
+        }
+
+        if ($this->encrypt) {
+            switch ($this->encryptName) {
+                case 'aes128-gcm@openssh.com':
+                case 'aes256-gcm@openssh.com':
+                    $this->encrypt->setNonce(
+                        $this->encryptFixedPart .
+                        $this->encryptInvocationCounter
+                    );
+                    Strings::increment_str($this->encryptInvocationCounter);
+                    $this->encrypt->setAAD($temp = ($packet & "\xFF\xFF\xFF\xFF"));
+                    $packet = $temp . $this->encrypt->encrypt(substr($packet, 4));
+                    break;
+                case 'chacha20-poly1305@openssh.com':
+                    // This should be impossible, but we are checking anyway to narrow the type for Psalm.
+                    if (!($this->encrypt instanceof ChaCha20)) {
+                        throw new \LogicException('$this->encrypt is not a ' . ChaCha20::class);
+                    }
+
+                    $nonce = pack('N2', 0, $this->send_seq_no);
+
+                    $this->encrypt->setNonce($nonce);
+                    $this->lengthEncrypt->setNonce($nonce);
+
+                    $length = $this->lengthEncrypt->encrypt($packet & "\xFF\xFF\xFF\xFF");
+
+                    $this->encrypt->setCounter(0);
+                    // this is the same approach that's implemented in Salsa20::createPoly1305Key()
+                    // but we don't want to use the same AEAD construction that RFC8439 describes
+                    // for ChaCha20-Poly1305 so we won't rely on it (see Salsa20::poly1305())
+                    $this->encrypt->setPoly1305Key(
+                        $this->encrypt->encrypt(str_repeat("\0", 32))
+                    );
+                    $this->encrypt->setAAD($length);
+                    $this->encrypt->setCounter(1);
+                    $packet = $length . $this->encrypt->encrypt(substr($packet, 4));
+                    break;
+                default:
+                    $packet = $this->hmac_create instanceof Hash && $this->hmac_create_etm ?
+                        ($packet & "\xFF\xFF\xFF\xFF") . $this->encrypt->encrypt(substr($packet, 4)) :
+                        $this->encrypt->encrypt($packet);
+            }
+        }
+
+        if ($this->hmac_create instanceof Hash && $this->hmac_create_etm) {
+            if (($this->hmac_create->getHash() & "\xFF\xFF\xFF\xFF") == 'umac') {
+                $this->hmac_create->setNonce("\0\0\0\0" . pack('N', $this->send_seq_no));
+                $hmac = $this->hmac_create->hash($packet);
+            } else {
+                $hmac = $this->hmac_create->hash(pack('Na*', $this->send_seq_no, $packet));
+            }
+        }
+
+        $this->send_seq_no++;
+
+        $packet .= $this->encrypt && $this->encrypt->usesNonce() ? $this->encrypt->getTag() : $hmac;
+
+        $start = microtime(true);
+        $sent = @fputs($this->fsock, $packet);
+        $stop = microtime(true);
+
+        if (defined('NET_SSH2_LOGGING')) {
+            $current = microtime(true);
+            $message_number = isset(self::$message_numbers[ord($logged[0])]) ? self::$message_numbers[ord($logged[0])] : 'UNKNOWN (' . ord($logged[0]) . ')';
+            $message_number = '-> ' . $message_number .
+                              ' (since last: ' . round($current - $this->last_packet, 4) . ', network: ' . round($stop - $start, 4) . 's)';
+            $this->append_log($message_number, $logged);
+            $this->last_packet = $current;
+        }
+
+        if (strlen($packet) != $sent) {
+            $this->bitmap = 0;
+            $message = $sent === false ?
+                'Unable to write ' . strlen($packet) . ' bytes' :
+                "Only $sent of " . strlen($packet) . " bytes were sent";
+            throw new \RuntimeException($message);
+        }
+    }
+
+    /**
+     * Logs data packets
+     *
+     * Makes sure that only the last 1MB worth of packets will be logged
+     *
+     * @param string $message_number
+     * @param string $message
+     */
+    private function append_log($message_number, $message)
+    {
+        $this->append_log_helper(
+            NET_SSH2_LOGGING,
+            $message_number,
+            $message,
+            $this->message_number_log,
+            $this->message_log,
+            $this->log_size,
+            $this->realtime_log_file,
+            $this->realtime_log_wrap,
+            $this->realtime_log_size
+        );
+    }
+
+    /**
+     * Logs data packet helper
+     *
+     * @param int $constant
+     * @param string $message_number
+     * @param string $message
+     * @param array &$message_number_log
+     * @param array &$message_log
+     * @param int &$log_size
+     * @param resource &$realtime_log_file
+     * @param bool &$realtime_log_wrap
+     * @param int &$realtime_log_size
+     */
+    protected function append_log_helper($constant, $message_number, $message, array &$message_number_log, array &$message_log, &$log_size, &$realtime_log_file, &$realtime_log_wrap, &$realtime_log_size)
+    {
+        // remove the byte identifying the message type from all but the first two messages (ie. the identification strings)
+        if (strlen($message_number) > 2) {
+            Strings::shift($message);
+        }
+
+        switch ($constant) {
+            // useful for benchmarks
+            case self::LOG_SIMPLE:
+                $message_number_log[] = $message_number;
+                break;
+            case self::LOG_SIMPLE_REALTIME:
+                echo $message_number;
+                echo PHP_SAPI == 'cli' ? "\r\n" : '<br>';
+                @flush();
+                @ob_flush();
+                break;
+            // the most useful log for SSH2
+            case self::LOG_COMPLEX:
+                $message_number_log[] = $message_number;
+                $log_size += strlen($message);
+                $message_log[] = $message;
+                while ($log_size > self::LOG_MAX_SIZE) {
+                    $log_size -= strlen(array_shift($message_log));
+                    array_shift($message_number_log);
+                }
+                break;
+            // dump the output out realtime; packets may be interspersed with non packets,
+            // passwords won't be filtered out and select other packets may not be correctly
+            // identified
+            case self::LOG_REALTIME:
+                switch (PHP_SAPI) {
+                    case 'cli':
+                        $start = $stop = "\r\n";
+                        break;
+                    default:
+                        $start = '<pre>';
+                        $stop = '</pre>';
+                }
+                echo $start . $this->format_log([$message], [$message_number]) . $stop;
+                @flush();
+                @ob_flush();
+                break;
+            // basically the same thing as self::LOG_REALTIME with the caveat that NET_SSH2_LOG_REALTIME_FILENAME
+            // needs to be defined and that the resultant log file will be capped out at self::LOG_MAX_SIZE.
+            // the earliest part of the log file is denoted by the first <<< START >>> and is not going to necessarily
+            // at the beginning of the file
+            case self::LOG_REALTIME_FILE:
+                if (!isset($realtime_log_file)) {
+                    // PHP doesn't seem to like using constants in fopen()
+                    $filename = NET_SSH2_LOG_REALTIME_FILENAME;
+                    $fp = fopen($filename, 'w');
+                    $realtime_log_file = $fp;
+                }
+                if (!is_resource($realtime_log_file)) {
+                    break;
+                }
+                $entry = $this->format_log([$message], [$message_number]);
+                if ($realtime_log_wrap) {
+                    $temp = "<<< START >>>\r\n";
+                    $entry .= $temp;
+                    fseek($realtime_log_file, ftell($realtime_log_file) - strlen($temp));
+                }
+                $realtime_log_size += strlen($entry);
+                if ($realtime_log_size > self::LOG_MAX_SIZE) {
+                    fseek($realtime_log_file, 0);
+                    $realtime_log_size = strlen($entry);
+                    $realtime_log_wrap = true;
+                }
+                fputs($realtime_log_file, $entry);
+        }
+    }
+
+    /**
+     * Sends channel data
+     *
+     * Spans multiple SSH_MSG_CHANNEL_DATAs if appropriate
+     *
+     * @param int $client_channel
+     * @param string $data
+     * @return void
+     */
+    protected function send_channel_packet($client_channel, $data)
+    {
+        while (strlen($data)) {
+            if (!$this->window_size_client_to_server[$client_channel]) {
+                $this->bitmap ^= self::MASK_WINDOW_ADJUST;
+                // using an invalid channel will let the buffers be built up for the valid channels
+                $this->get_channel_packet(-1);
+                $this->bitmap ^= self::MASK_WINDOW_ADJUST;
+            }
+
+            /* The maximum amount of data allowed is determined by the maximum
+               packet size for the channel, and the current window size, whichever
+               is smaller.
+                 -- http://tools.ietf.org/html/rfc4254#section-5.2 */
+            $max_size = min(
+                $this->packet_size_client_to_server[$client_channel],
+                $this->window_size_client_to_server[$client_channel]
+            );
+
+            $temp = Strings::shift($data, $max_size);
+            $packet = Strings::packSSH2(
+                'CNs',
+                NET_SSH2_MSG_CHANNEL_DATA,
+                $this->server_channels[$client_channel],
+                $temp
+            );
+            $this->window_size_client_to_server[$client_channel] -= strlen($temp);
+            $this->send_binary_packet($packet);
+        }
+    }
+
+    /**
+     * Closes and flushes a channel
+     *
+     * \phpseclib3\Net\SSH2 doesn't properly close most channels.  For exec() channels are normally closed by the server
+     * and for SFTP channels are presumably closed when the client disconnects.  This functions is intended
+     * for SCP more than anything.
+     *
+     * @param int $client_channel
+     * @param bool $want_reply
+     * @return void
+     */
+    private function close_channel($client_channel, $want_reply = false)
+    {
+        // see http://tools.ietf.org/html/rfc4254#section-5.3
+
+        $this->send_binary_packet(pack('CN', NET_SSH2_MSG_CHANNEL_EOF, $this->server_channels[$client_channel]));
+
+        if (!$want_reply) {
+            $this->send_binary_packet(pack('CN', NET_SSH2_MSG_CHANNEL_CLOSE, $this->server_channels[$client_channel]));
+        }
+
+        $this->channel_status[$client_channel] = NET_SSH2_MSG_CHANNEL_CLOSE;
+        $this->channelCount--;
+
+        $this->curTimeout = 5;
+
+        while (!is_bool($this->get_channel_packet($client_channel))) {
+        }
+
+        if ($want_reply) {
+            $this->send_binary_packet(pack('CN', NET_SSH2_MSG_CHANNEL_CLOSE, $this->server_channels[$client_channel]));
+        }
+
+        $this->close_channel_bitmap($client_channel);
+    }
+
+    /**
+     * Maintains execution state bitmap in response to channel closure
+     *
+     * @param int $client_channel The channel number to maintain closure status of
+     * @return void
+     */
+    private function close_channel_bitmap($client_channel)
+    {
+        switch ($client_channel) {
+            case self::CHANNEL_SHELL:
+                // Shell status has been maintained in the bitmap for backwards
+                //  compatibility sake, but can be removed going forward
+                if ($this->bitmap & self::MASK_SHELL) {
+                    $this->bitmap &= ~self::MASK_SHELL;
+                }
+                break;
+        }
+    }
+
+    /**
+     * Disconnect
+     *
+     * @param int $reason
+     * @return false
+     */
+    protected function disconnect_helper($reason)
+    {
+        if ($this->bitmap & self::MASK_CONNECTED) {
+            $data = Strings::packSSH2('CNss', NET_SSH2_MSG_DISCONNECT, $reason, '', '');
+            try {
+                $this->send_binary_packet($data);
+            } catch (\Exception $e) {
+            }
+        }
+
+        $this->bitmap = 0;
+        if (is_resource($this->fsock) && get_resource_type($this->fsock) === 'stream') {
+            fclose($this->fsock);
+        }
+
+        return false;
+    }
+
+    /**
+     * Define Array
+     *
+     * Takes any number of arrays whose indices are integers and whose values are strings and defines a bunch of
+     * named constants from it, using the value as the name of the constant and the index as the value of the constant.
+     * If any of the constants that would be defined already exists, none of the constants will be defined.
+     *
+     * @param mixed[] ...$args
+     * @access protected
+     */
+    protected static function define_array(...$args)
+    {
+        foreach ($args as $arg) {
+            foreach ($arg as $key => $value) {
+                if (!defined($value)) {
+                    define($value, $key);
+                } else {
+                    break 2;
+                }
+            }
+        }
+    }
+
+    /**
+     * Returns a log of the packets that have been sent and received.
+     *
+     * Returns a string if NET_SSH2_LOGGING == self::LOG_COMPLEX, an array if NET_SSH2_LOGGING == self::LOG_SIMPLE and false if !defined('NET_SSH2_LOGGING')
+     *
+     * @return array|false|string
+     */
+    public function getLog()
+    {
+        if (!defined('NET_SSH2_LOGGING')) {
+            return false;
+        }
+
+        switch (NET_SSH2_LOGGING) {
+            case self::LOG_SIMPLE:
+                return $this->message_number_log;
+            case self::LOG_COMPLEX:
+                $log = $this->format_log($this->message_log, $this->message_number_log);
+                return PHP_SAPI == 'cli' ? $log : '<pre>' . $log . '</pre>';
+            default:
+                return false;
+        }
+    }
+
+    /**
+     * Formats a log for printing
+     *
+     * @param array $message_log
+     * @param array $message_number_log
+     * @return string
+     */
+    protected function format_log(array $message_log, array $message_number_log)
+    {
+        $output = '';
+        for ($i = 0; $i < count($message_log); $i++) {
+            $output .= $message_number_log[$i] . "\r\n";
+            $current_log = $message_log[$i];
+            $j = 0;
+            do {
+                if (strlen($current_log)) {
+                    $output .= str_pad(dechex($j), 7, '0', STR_PAD_LEFT) . '0  ';
+                }
+                $fragment = Strings::shift($current_log, $this->log_short_width);
+                $hex = substr(preg_replace_callback('#.#s', function ($matches) {
+                    return $this->log_boundary . str_pad(dechex(ord($matches[0])), 2, '0', STR_PAD_LEFT);
+                }, $fragment), strlen($this->log_boundary));
+                // replace non ASCII printable characters with dots
+                // http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters
+                // also replace < with a . since < messes up the output on web browsers
+                $raw = preg_replace('#[^\x20-\x7E]|<#', '.', $fragment);
+                $output .= str_pad($hex, $this->log_long_width - $this->log_short_width, ' ') . $raw . "\r\n";
+                $j++;
+            } while (strlen($current_log));
+            $output .= "\r\n";
+        }
+
+        return $output;
+    }
+
+    /**
+     * Helper function for agent->on_channel_open()
+     *
+     * Used when channels are created to inform agent
+     * of said channel opening. Must be called after
+     * channel open confirmation received
+     *
+     */
+    private function on_channel_open()
+    {
+        if (isset($this->agent)) {
+            $this->agent->registerChannelOpen($this);
+        }
+    }
+
+    /**
+     * Returns the first value of the intersection of two arrays or false if
+     * the intersection is empty. The order is defined by the first parameter.
+     *
+     * @param array $array1
+     * @param array $array2
+     * @return mixed False if intersection is empty, else intersected value.
+     */
+    private static function array_intersect_first(array $array1, array $array2)
+    {
+        foreach ($array1 as $value) {
+            if (in_array($value, $array2)) {
+                return $value;
+            }
+        }
+        return false;
+    }
+
+    /**
+     * Returns all errors / debug messages on the SSH layer
+     *
+     * If you are looking for messages from the SFTP layer, please see SFTP::getSFTPErrors()
+     *
+     * @return string[]
+     */
+    public function getErrors()
+    {
+        return $this->errors;
+    }
+
+    /**
+     * Returns the last error received on the SSH layer
+     *
+     * If you are looking for messages from the SFTP layer, please see SFTP::getLastSFTPError()
+     *
+     * @return string
+     */
+    public function getLastError()
+    {
+        $count = count($this->errors);
+
+        if ($count > 0) {
+            return $this->errors[$count - 1];
+        }
+    }
+
+    /**
+     * Return the server identification.
+     *
+     * @return string|false
+     */
+    public function getServerIdentification()
+    {
+        $this->connect();
+
+        return $this->server_identifier;
+    }
+
+    /**
+     * Returns a list of algorithms the server supports
+     *
+     * @return array
+     */
+    public function getServerAlgorithms()
+    {
+        $this->connect();
+
+        return [
+            'kex' => $this->kex_algorithms,
+            'hostkey' => $this->server_host_key_algorithms,
+            'client_to_server' => [
+                'crypt' => $this->encryption_algorithms_client_to_server,
+                'mac' => $this->mac_algorithms_client_to_server,
+                'comp' => $this->compression_algorithms_client_to_server,
+                'lang' => $this->languages_client_to_server
+            ],
+            'server_to_client' => [
+                'crypt' => $this->encryption_algorithms_server_to_client,
+                'mac' => $this->mac_algorithms_server_to_client,
+                'comp' => $this->compression_algorithms_server_to_client,
+                'lang' => $this->languages_server_to_client
+            ]
+        ];
+    }
+
+    /**
+     * Returns a list of KEX algorithms that phpseclib supports
+     *
+     * @return array
+     */
+    public static function getSupportedKEXAlgorithms()
+    {
+        $kex_algorithms = [
+            // Elliptic Curve Diffie-Hellman Key Agreement (ECDH) using
+            // Curve25519. See doc/curve25519-sha256@libssh.org.txt in the
+            // libssh repository for more information.
+            'curve25519-sha256',
+            'curve25519-sha256@libssh.org',
+
+            'ecdh-sha2-nistp256', // RFC 5656
+            'ecdh-sha2-nistp384', // RFC 5656
+            'ecdh-sha2-nistp521', // RFC 5656
+
+            'diffie-hellman-group-exchange-sha256',// RFC 4419
+            'diffie-hellman-group-exchange-sha1',  // RFC 4419
+
+            // Diffie-Hellman Key Agreement (DH) using integer modulo prime
+            // groups.
+            'diffie-hellman-group14-sha256',
+            'diffie-hellman-group14-sha1', // REQUIRED
+            'diffie-hellman-group15-sha512',
+            'diffie-hellman-group16-sha512',
+            'diffie-hellman-group17-sha512',
+            'diffie-hellman-group18-sha512',
+
+            'diffie-hellman-group1-sha1', // REQUIRED
+        ];
+
+        return $kex_algorithms;
+    }
+
+    /**
+     * Returns a list of host key algorithms that phpseclib supports
+     *
+     * @return array
+     */
+    public static function getSupportedHostKeyAlgorithms()
+    {
+        return [
+            'ssh-ed25519', // https://tools.ietf.org/html/draft-ietf-curdle-ssh-ed25519-02
+            'ecdsa-sha2-nistp256', // RFC 5656
+            'ecdsa-sha2-nistp384', // RFC 5656
+            'ecdsa-sha2-nistp521', // RFC 5656
+            'rsa-sha2-256', // RFC 8332
+            'rsa-sha2-512', // RFC 8332
+            'ssh-rsa', // RECOMMENDED  sign   Raw RSA Key
+            'ssh-dss'  // REQUIRED     sign   Raw DSS Key
+        ];
+    }
+
+    /**
+     * Returns a list of symmetric key algorithms that phpseclib supports
+     *
+     * @return array
+     */
+    public static function getSupportedEncryptionAlgorithms()
+    {
+        $algos = [
+            // from <https://tools.ietf.org/html/rfc5647>:
+            'aes128-gcm@openssh.com',
+            'aes256-gcm@openssh.com',
+
+            // from <http://tools.ietf.org/html/rfc4345#section-4>:
+            'arcfour256',
+            'arcfour128',
+
+            //'arcfour',      // OPTIONAL          the ARCFOUR stream cipher with a 128-bit key
+
+            // CTR modes from <http://tools.ietf.org/html/rfc4344#section-4>:
+            'aes128-ctr',     // RECOMMENDED       AES (Rijndael) in SDCTR mode, with 128-bit key
+            'aes192-ctr',     // RECOMMENDED       AES with 192-bit key
+            'aes256-ctr',     // RECOMMENDED       AES with 256-bit key
+
+            // from <https://github.com/openssh/openssh-portable/blob/001aa55/PROTOCOL.chacha20poly1305>:
+            // one of the big benefits of chacha20-poly1305 is speed. the problem is...
+            // libsodium doesn't generate the poly1305 keys in the way ssh does and openssl's PHP bindings don't even
+            // seem to support poly1305 currently. so even if libsodium or openssl are being used for the chacha20
+            // part, pure-PHP has to be used for the poly1305 part and that's gonna cause a big slow down.
+            // speed-wise it winds up being faster to use AES (when openssl or mcrypt are available) and some HMAC
+            // (which is always gonna be super fast to compute thanks to the hash extension, which
+            // "is bundled and compiled into PHP by default")
+            'chacha20-poly1305@openssh.com',
+
+            'twofish128-ctr', // OPTIONAL          Twofish in SDCTR mode, with 128-bit key
+            'twofish192-ctr', // OPTIONAL          Twofish with 192-bit key
+            'twofish256-ctr', // OPTIONAL          Twofish with 256-bit key
+
+            'aes128-cbc',     // RECOMMENDED       AES with a 128-bit key
+            'aes192-cbc',     // OPTIONAL          AES with a 192-bit key
+            'aes256-cbc',     // OPTIONAL          AES in CBC mode, with a 256-bit key
+
+            'twofish128-cbc', // OPTIONAL          Twofish with a 128-bit key
+            'twofish192-cbc', // OPTIONAL          Twofish with a 192-bit key
+            'twofish256-cbc',
+            'twofish-cbc',    // OPTIONAL          alias for "twofish256-cbc"
+                              //                   (this is being retained for historical reasons)
+
+            'blowfish-ctr',   // OPTIONAL          Blowfish in SDCTR mode
+
+            'blowfish-cbc',   // OPTIONAL          Blowfish in CBC mode
+
+            '3des-ctr',       // RECOMMENDED       Three-key 3DES in SDCTR mode
+
+            '3des-cbc',       // REQUIRED          three-key 3DES in CBC mode
+
+             //'none'           // OPTIONAL          no encryption; NOT RECOMMENDED
+        ];
+
+        if (self::$crypto_engine) {
+            $engines = [self::$crypto_engine];
+        } else {
+            $engines = [
+                'libsodium',
+                'OpenSSL (GCM)',
+                'OpenSSL',
+                'mcrypt',
+                'Eval',
+                'PHP'
+            ];
+        }
+
+        $ciphers = [];
+
+        foreach ($engines as $engine) {
+            foreach ($algos as $algo) {
+                $obj = self::encryption_algorithm_to_crypt_instance($algo);
+                if ($obj instanceof Rijndael) {
+                    $obj->setKeyLength(preg_replace('#[^\d]#', '', $algo));
+                }
+                switch ($algo) {
+                    case 'chacha20-poly1305@openssh.com':
+                    case 'arcfour128':
+                    case 'arcfour256':
+                        if ($engine != 'Eval') {
+                            continue 2;
+                        }
+                        break;
+                    case 'aes128-gcm@openssh.com':
+                    case 'aes256-gcm@openssh.com':
+                        if ($engine == 'OpenSSL') {
+                            continue 2;
+                        }
+                        $obj->setNonce('dummydummydu');
+                }
+                if ($obj->isValidEngine($engine)) {
+                    $algos = array_diff($algos, [$algo]);
+                    $ciphers[] = $algo;
+                }
+            }
+        }
+
+        return $ciphers;
+    }
+
+    /**
+     * Returns a list of MAC algorithms that phpseclib supports
+     *
+     * @return array
+     */
+    public static function getSupportedMACAlgorithms()
+    {
+        return [
+            'hmac-sha2-256-etm@openssh.com',
+            'hmac-sha2-512-etm@openssh.com',
+            'umac-64-etm@openssh.com',
+            'umac-128-etm@openssh.com',
+            'hmac-sha1-etm@openssh.com',
+
+            // from <http://www.ietf.org/rfc/rfc6668.txt>:
+            'hmac-sha2-256',// RECOMMENDED     HMAC-SHA256 (digest length = key length = 32)
+            'hmac-sha2-512',// OPTIONAL        HMAC-SHA512 (digest length = key length = 64)
+
+            // from <https://tools.ietf.org/html/draft-miller-secsh-umac-01>:
+            'umac-64@openssh.com',
+            'umac-128@openssh.com',
+
+            'hmac-sha1-96', // RECOMMENDED     first 96 bits of HMAC-SHA1 (digest length = 12, key length = 20)
+            'hmac-sha1',    // REQUIRED        HMAC-SHA1 (digest length = key length = 20)
+            'hmac-md5-96',  // OPTIONAL        first 96 bits of HMAC-MD5 (digest length = 12, key length = 16)
+            'hmac-md5',     // OPTIONAL        HMAC-MD5 (digest length = key length = 16)
+            //'none'          // OPTIONAL        no MAC; NOT RECOMMENDED
+        ];
+    }
+
+    /**
+     * Returns a list of compression algorithms that phpseclib supports
+     *
+     * @return array
+     */
+    public static function getSupportedCompressionAlgorithms()
+    {
+        $algos = ['none']; // REQUIRED        no compression
+        if (function_exists('deflate_init')) {
+            $algos[] = 'zlib@openssh.com'; // https://datatracker.ietf.org/doc/html/draft-miller-secsh-compression-delayed
+            $algos[] = 'zlib';
+        }
+        return $algos;
+    }
+
+    /**
+     * Return list of negotiated algorithms
+     *
+     * Uses the same format as https://www.php.net/ssh2-methods-negotiated
+     *
+     * @return array
+     */
+    public function getAlgorithmsNegotiated()
+    {
+        $this->connect();
+
+        $compression_map = [
+            self::NET_SSH2_COMPRESSION_NONE => 'none',
+            self::NET_SSH2_COMPRESSION_ZLIB => 'zlib',
+            self::NET_SSH2_COMPRESSION_ZLIB_AT_OPENSSH => 'zlib@openssh.com'
+        ];
+
+        return [
+            'kex' => $this->kex_algorithm,
+            'hostkey' => $this->signature_format,
+            'client_to_server' => [
+                'crypt' => $this->encryptName,
+                'mac' => $this->hmac_create_name,
+                'comp' => $compression_map[$this->compress],
+            ],
+            'server_to_client' => [
+                'crypt' => $this->decryptName,
+                'mac' => $this->hmac_check_name,
+                'comp' => $compression_map[$this->decompress],
+            ]
+        ];
+    }
+
+    /**
+     * Force multiple channels (even if phpseclib has decided to disable them)
+     */
+    public function forceMultipleChannels()
+    {
+        $this->errorOnMultipleChannels = false;
+    }
+
+    /**
+     * Allows you to set the terminal
+     *
+     * @param string $term
+     */
+    public function setTerminal($term)
+    {
+        $this->term = $term;
+    }
+
+    /**
+     * Accepts an associative array with up to four parameters as described at
+     * <https://www.php.net/manual/en/function.ssh2-connect.php>
+     *
+     * @param array $methods
+     */
+    public function setPreferredAlgorithms(array $methods)
+    {
+        $preferred = $methods;
+
+        if (isset($preferred['kex'])) {
+            $preferred['kex'] = array_intersect(
+                $preferred['kex'],
+                static::getSupportedKEXAlgorithms()
+            );
+        }
+
+        if (isset($preferred['hostkey'])) {
+            $preferred['hostkey'] = array_intersect(
+                $preferred['hostkey'],
+                static::getSupportedHostKeyAlgorithms()
+            );
+        }
+
+        $keys = ['client_to_server', 'server_to_client'];
+        foreach ($keys as $key) {
+            if (isset($preferred[$key])) {
+                $a = &$preferred[$key];
+                if (isset($a['crypt'])) {
+                    $a['crypt'] = array_intersect(
+                        $a['crypt'],
+                        static::getSupportedEncryptionAlgorithms()
+                    );
+                }
+                if (isset($a['comp'])) {
+                    $a['comp'] = array_intersect(
+                        $a['comp'],
+                        static::getSupportedCompressionAlgorithms()
+                    );
+                }
+                if (isset($a['mac'])) {
+                    $a['mac'] = array_intersect(
+                        $a['mac'],
+                        static::getSupportedMACAlgorithms()
+                    );
+                }
+            }
+        }
+
+        $keys = [
+            'kex',
+            'hostkey',
+            'client_to_server/crypt',
+            'client_to_server/comp',
+            'client_to_server/mac',
+            'server_to_client/crypt',
+            'server_to_client/comp',
+            'server_to_client/mac',
+        ];
+        foreach ($keys as $key) {
+            $p = $preferred;
+            $m = $methods;
+
+            $subkeys = explode('/', $key);
+            foreach ($subkeys as $subkey) {
+                if (!isset($p[$subkey])) {
+                    continue 2;
+                }
+                $p = $p[$subkey];
+                $m = $m[$subkey];
+            }
+
+            if (count($p) != count($m)) {
+                $diff = array_diff($m, $p);
+                $msg = count($diff) == 1 ?
+                    ' is not a supported algorithm' :
+                    ' are not supported algorithms';
+                throw new UnsupportedAlgorithmException(implode(', ', $diff) . $msg);
+            }
+        }
+
+        $this->preferred = $preferred;
+    }
+
+    /**
+     * Returns the banner message.
+     *
+     * Quoting from the RFC, "in some jurisdictions, sending a warning message before
+     * authentication may be relevant for getting legal protection."
+     *
+     * @return string
+     */
+    public function getBannerMessage()
+    {
+        return $this->banner_message;
+    }
+
+    /**
+     * Returns the server public host key.
+     *
+     * Caching this the first time you connect to a server and checking the result on subsequent connections
+     * is recommended.  Returns false if the server signature is not signed correctly with the public host key.
+     *
+     * @return string|false
+     * @throws \RuntimeException on badly formatted keys
+     * @throws \phpseclib3\Exception\NoSupportedAlgorithmsException when the key isn't in a supported format
+     */
+    public function getServerPublicHostKey()
+    {
+        if (!($this->bitmap & self::MASK_CONSTRUCTOR)) {
+            $this->connect();
+        }
+
+        $signature = $this->signature;
+        $server_public_host_key = base64_encode($this->server_public_host_key);
+
+        if ($this->signature_validated) {
+            return $this->bitmap ?
+                $this->signature_format . ' ' . $server_public_host_key :
+                false;
+        }
+
+        $this->signature_validated = true;
+
+        switch ($this->signature_format) {
+            case 'ssh-ed25519':
+            case 'ecdsa-sha2-nistp256':
+            case 'ecdsa-sha2-nistp384':
+            case 'ecdsa-sha2-nistp521':
+                $key = EC::loadFormat('OpenSSH', $server_public_host_key)
+                    ->withSignatureFormat('SSH2');
+                switch ($this->signature_format) {
+                    case 'ssh-ed25519':
+                        $hash = 'sha512';
+                        break;
+                    case 'ecdsa-sha2-nistp256':
+                        $hash = 'sha256';
+                        break;
+                    case 'ecdsa-sha2-nistp384':
+                        $hash = 'sha384';
+                        break;
+                    case 'ecdsa-sha2-nistp521':
+                        $hash = 'sha512';
+                }
+                $key = $key->withHash($hash);
+                break;
+            case 'ssh-dss':
+                $key = DSA::loadFormat('OpenSSH', $server_public_host_key)
+                    ->withSignatureFormat('SSH2')
+                    ->withHash('sha1');
+                break;
+            case 'ssh-rsa':
+            case 'rsa-sha2-256':
+            case 'rsa-sha2-512':
+                // could be ssh-rsa, rsa-sha2-256, rsa-sha2-512
+                // we don't check here because we already checked in key_exchange
+                // some signatures have the type embedded within the message and some don't
+                list(, $signature) = Strings::unpackSSH2('ss', $signature);
+
+                $key = RSA::loadFormat('OpenSSH', $server_public_host_key)
+                    ->withPadding(RSA::SIGNATURE_PKCS1);
+                switch ($this->signature_format) {
+                    case 'rsa-sha2-512':
+                        $hash = 'sha512';
+                        break;
+                    case 'rsa-sha2-256':
+                        $hash = 'sha256';
+                        break;
+                    //case 'ssh-rsa':
+                    default:
+                        $hash = 'sha1';
+                }
+                $key = $key->withHash($hash);
+                break;
+            default:
+                $this->disconnect_helper(NET_SSH2_DISCONNECT_HOST_KEY_NOT_VERIFIABLE);
+                throw new NoSupportedAlgorithmsException('Unsupported signature format');
+        }
+
+        if (!$key->verify($this->exchange_hash, $signature)) {
+            return $this->disconnect_helper(NET_SSH2_DISCONNECT_HOST_KEY_NOT_VERIFIABLE);
+        };
+
+        return $this->signature_format . ' ' . $server_public_host_key;
+    }
+
+    /**
+     * Returns the exit status of an SSH command or false.
+     *
+     * @return false|int
+     */
+    public function getExitStatus()
+    {
+        if (is_null($this->exit_status)) {
+            return false;
+        }
+        return $this->exit_status;
+    }
+
+    /**
+     * Returns the number of columns for the terminal window size.
+     *
+     * @return int
+     */
+    public function getWindowColumns()
+    {
+        return $this->windowColumns;
+    }
+
+    /**
+     * Returns the number of rows for the terminal window size.
+     *
+     * @return int
+     */
+    public function getWindowRows()
+    {
+        return $this->windowRows;
+    }
+
+    /**
+     * Sets the number of columns for the terminal window size.
+     *
+     * @param int $value
+     */
+    public function setWindowColumns($value)
+    {
+        $this->windowColumns = $value;
+    }
+
+    /**
+     * Sets the number of rows for the terminal window size.
+     *
+     * @param int $value
+     */
+    public function setWindowRows($value)
+    {
+        $this->windowRows = $value;
+    }
+
+    /**
+     * Sets the number of columns and rows for the terminal window size.
+     *
+     * @param int $columns
+     * @param int $rows
+     */
+    public function setWindowSize($columns = 80, $rows = 24)
+    {
+        $this->windowColumns = $columns;
+        $this->windowRows = $rows;
+    }
+
+    /**
+     * To String Magic Method
+     *
+     * @return string
+     */
+    #[\ReturnTypeWillChange]
+    public function __toString()
+    {
+        return $this->getResourceId();
+    }
+
+    /**
+     * Get Resource ID
+     *
+     * We use {} because that symbols should not be in URL according to
+     * {@link http://tools.ietf.org/html/rfc3986#section-2 RFC}.
+     * It will safe us from any conflicts, because otherwise regexp will
+     * match all alphanumeric domains.
+     *
+     * @return string
+     */
+    public function getResourceId()
+    {
+        return '{' . spl_object_hash($this) . '}';
+    }
+
+    /**
+     * Return existing connection
+     *
+     * @param string $id
+     *
+     * @return bool|SSH2 will return false if no such connection
+     */
+    public static function getConnectionByResourceId($id)
+    {
+        if (isset(self::$connections[$id])) {
+            return self::$connections[$id] instanceof \WeakReference ? self::$connections[$id]->get() : self::$connections[$id];
+        }
+        return false;
+    }
+
+    /**
+     * Return all excising connections
+     *
+     * @return array<string, SSH2>
+     */
+    public static function getConnections()
+    {
+        if (!class_exists('WeakReference')) {
+            /** @var array<string, SSH2> */
+            return self::$connections;
+        }
+        $temp = [];
+        foreach (self::$connections as $key => $ref) {
+            $temp[$key] = $ref->get();
+        }
+        return $temp;
+    }
+
+    /*
+     * Update packet types in log history
+     *
+     * @param string $old
+     * @param string $new
+     */
+    private function updateLogHistory($old, $new)
+    {
+        if (defined('NET_SSH2_LOGGING') && NET_SSH2_LOGGING == self::LOG_COMPLEX) {
+            $this->message_number_log[count($this->message_number_log) - 1] = str_replace(
+                $old,
+                $new,
+                $this->message_number_log[count($this->message_number_log) - 1]
+            );
+        }
+    }
+
+    /**
+     * Return the list of authentication methods that may productively continue authentication.
+     *
+     * @see https://tools.ietf.org/html/rfc4252#section-5.1
+     * @return array|null
+     */
+    public function getAuthMethodsToContinue()
+    {
+        return $this->auth_methods_to_continue;
+    }
+
+    /**
+     * Enables "smart" multi-factor authentication (MFA)
+     */
+    public function enableSmartMFA()
+    {
+        $this->smartMFA = true;
+    }
+
+    /**
+     * Disables "smart" multi-factor authentication (MFA)
+     */
+    public function disableSmartMFA()
+    {
+        $this->smartMFA = false;
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/System/SSH/Agent.php b/vendor/phpseclib/phpseclib/phpseclib/System/SSH/Agent.php
new file mode 100644
index 0000000..26ca322
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/System/SSH/Agent.php
@@ -0,0 +1,286 @@
+<?php
+
+/**
+ * Pure-PHP ssh-agent client.
+ *
+ * {@internal See http://api.libssh.org/rfc/PROTOCOL.agent}
+ *
+ * PHP version 5
+ *
+ * Here are some examples of how to use this library:
+ * <code>
+ * <?php
+ *    include 'vendor/autoload.php';
+ *
+ *    $agent = new \phpseclib3\System\SSH\Agent();
+ *
+ *    $ssh = new \phpseclib3\Net\SSH2('www.domain.tld');
+ *    if (!$ssh->login('username', $agent)) {
+ *        exit('Login Failed');
+ *    }
+ *
+ *    echo $ssh->exec('pwd');
+ *    echo $ssh->exec('ls -la');
+ * ?>
+ * </code>
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2014 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\System\SSH;
+
+use phpseclib3\Common\Functions\Strings;
+use phpseclib3\Crypt\PublicKeyLoader;
+use phpseclib3\Crypt\RSA;
+use phpseclib3\Exception\BadConfigurationException;
+use phpseclib3\Net\SSH2;
+use phpseclib3\System\SSH\Agent\Identity;
+
+/**
+ * Pure-PHP ssh-agent client identity factory
+ *
+ * requestIdentities() method pumps out \phpseclib3\System\SSH\Agent\Identity objects
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+class Agent
+{
+    use Common\Traits\ReadBytes;
+
+    // Message numbers
+
+    // to request SSH1 keys you have to use SSH_AGENTC_REQUEST_RSA_IDENTITIES (1)
+    const SSH_AGENTC_REQUEST_IDENTITIES = 11;
+    // this is the SSH2 response; the SSH1 response is SSH_AGENT_RSA_IDENTITIES_ANSWER (2).
+    const SSH_AGENT_IDENTITIES_ANSWER = 12;
+    // the SSH1 request is SSH_AGENTC_RSA_CHALLENGE (3)
+    const SSH_AGENTC_SIGN_REQUEST = 13;
+    // the SSH1 response is SSH_AGENT_RSA_RESPONSE (4)
+    const SSH_AGENT_SIGN_RESPONSE = 14;
+
+    // Agent forwarding status
+
+    // no forwarding requested and not active
+    const FORWARD_NONE = 0;
+    // request agent forwarding when opportune
+    const FORWARD_REQUEST = 1;
+    // forwarding has been request and is active
+    const FORWARD_ACTIVE = 2;
+
+    /**
+     * Unused
+     */
+    const SSH_AGENT_FAILURE = 5;
+
+    /**
+     * Socket Resource
+     *
+     * @var resource
+     */
+    private $fsock;
+
+    /**
+     * Agent forwarding status
+     *
+     * @var int
+     */
+    private $forward_status = self::FORWARD_NONE;
+
+    /**
+     * Buffer for accumulating forwarded authentication
+     * agent data arriving on SSH data channel destined
+     * for agent unix socket
+     *
+     * @var string
+     */
+    private $socket_buffer = '';
+
+    /**
+     * Tracking the number of bytes we are expecting
+     * to arrive for the agent socket on the SSH data
+     * channel
+     *
+     * @var int
+     */
+    private $expected_bytes = 0;
+
+    /**
+     * Default Constructor
+     *
+     * @return \phpseclib3\System\SSH\Agent
+     * @throws \phpseclib3\Exception\BadConfigurationException if SSH_AUTH_SOCK cannot be found
+     * @throws \RuntimeException on connection errors
+     */
+    public function __construct($address = null)
+    {
+        if (!$address) {
+            switch (true) {
+                case isset($_SERVER['SSH_AUTH_SOCK']):
+                    $address = $_SERVER['SSH_AUTH_SOCK'];
+                    break;
+                case isset($_ENV['SSH_AUTH_SOCK']):
+                    $address = $_ENV['SSH_AUTH_SOCK'];
+                    break;
+                default:
+                    throw new BadConfigurationException('SSH_AUTH_SOCK not found');
+            }
+        }
+
+        if (in_array('unix', stream_get_transports())) {
+            $this->fsock = fsockopen('unix://' . $address, 0, $errno, $errstr);
+            if (!$this->fsock) {
+                throw new \RuntimeException("Unable to connect to ssh-agent (Error $errno: $errstr)");
+            }
+        } else {
+            if (substr($address, 0, 9) != '\\\\.\\pipe\\' || strpos(substr($address, 9), '\\') !== false) {
+                throw new \RuntimeException('Address is not formatted as a named pipe should be');
+            }
+
+            $this->fsock = fopen($address, 'r+b');
+            if (!$this->fsock) {
+                throw new \RuntimeException('Unable to open address');
+            }
+        }
+    }
+
+    /**
+     * Request Identities
+     *
+     * See "2.5.2 Requesting a list of protocol 2 keys"
+     * Returns an array containing zero or more \phpseclib3\System\SSH\Agent\Identity objects
+     *
+     * @return array
+     * @throws \RuntimeException on receipt of unexpected packets
+     */
+    public function requestIdentities()
+    {
+        if (!$this->fsock) {
+            return [];
+        }
+
+        $packet = pack('NC', 1, self::SSH_AGENTC_REQUEST_IDENTITIES);
+        if (strlen($packet) != fputs($this->fsock, $packet)) {
+            throw new \RuntimeException('Connection closed while requesting identities');
+        }
+
+        $length = current(unpack('N', $this->readBytes(4)));
+        $packet = $this->readBytes($length);
+
+        list($type, $keyCount) = Strings::unpackSSH2('CN', $packet);
+        if ($type != self::SSH_AGENT_IDENTITIES_ANSWER) {
+            throw new \RuntimeException('Unable to request identities');
+        }
+
+        $identities = [];
+        for ($i = 0; $i < $keyCount; $i++) {
+            list($key_blob, $comment) = Strings::unpackSSH2('ss', $packet);
+            $temp = $key_blob;
+            list($key_type) = Strings::unpackSSH2('s', $temp);
+            switch ($key_type) {
+                case 'ssh-rsa':
+                case 'ssh-dss':
+                case 'ssh-ed25519':
+                case 'ecdsa-sha2-nistp256':
+                case 'ecdsa-sha2-nistp384':
+                case 'ecdsa-sha2-nistp521':
+                    $key = PublicKeyLoader::load($key_type . ' ' . base64_encode($key_blob));
+            }
+            // resources are passed by reference by default
+            if (isset($key)) {
+                $identity = (new Identity($this->fsock))
+                    ->withPublicKey($key)
+                    ->withPublicKeyBlob($key_blob);
+                $identities[] = $identity;
+                unset($key);
+            }
+        }
+
+        return $identities;
+    }
+
+    /**
+     * Signal that agent forwarding should
+     * be requested when a channel is opened
+     *
+     * @return void
+     */
+    public function startSSHForwarding()
+    {
+        if ($this->forward_status == self::FORWARD_NONE) {
+            $this->forward_status = self::FORWARD_REQUEST;
+        }
+    }
+
+    /**
+     * Request agent forwarding of remote server
+     *
+     * @param \phpseclib3\Net\SSH2 $ssh
+     * @return bool
+     */
+    private function request_forwarding(SSH2 $ssh)
+    {
+        if (!$ssh->requestAgentForwarding()) {
+            return false;
+        }
+
+        $this->forward_status = self::FORWARD_ACTIVE;
+
+        return true;
+    }
+
+    /**
+     * On successful channel open
+     *
+     * This method is called upon successful channel
+     * open to give the SSH Agent an opportunity
+     * to take further action. i.e. request agent forwarding
+     *
+     * @param \phpseclib3\Net\SSH2 $ssh
+     */
+    public function registerChannelOpen(SSH2 $ssh)
+    {
+        if ($this->forward_status == self::FORWARD_REQUEST) {
+            $this->request_forwarding($ssh);
+        }
+    }
+
+    /**
+     * Forward data to SSH Agent and return data reply
+     *
+     * @param string $data
+     * @return string Data from SSH Agent
+     * @throws \RuntimeException on connection errors
+     */
+    public function forwardData($data)
+    {
+        if ($this->expected_bytes > 0) {
+            $this->socket_buffer .= $data;
+            $this->expected_bytes -= strlen($data);
+        } else {
+            $agent_data_bytes = current(unpack('N', $data));
+            $current_data_bytes = strlen($data);
+            $this->socket_buffer = $data;
+            if ($current_data_bytes != $agent_data_bytes + 4) {
+                $this->expected_bytes = ($agent_data_bytes + 4) - $current_data_bytes;
+                return false;
+            }
+        }
+
+        if (strlen($this->socket_buffer) != fwrite($this->fsock, $this->socket_buffer)) {
+            throw new \RuntimeException('Connection closed attempting to forward data to SSH agent');
+        }
+
+        $this->socket_buffer = '';
+        $this->expected_bytes = 0;
+
+        $agent_reply_bytes = current(unpack('N', $this->readBytes(4)));
+
+        $agent_reply_data = $this->readBytes($agent_reply_bytes);
+        $agent_reply_data = current(unpack('a*', $agent_reply_data));
+
+        return pack('Na*', $agent_reply_bytes, $agent_reply_data);
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/System/SSH/Agent/Identity.php b/vendor/phpseclib/phpseclib/phpseclib/System/SSH/Agent/Identity.php
new file mode 100644
index 0000000..653e8ea
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/System/SSH/Agent/Identity.php
@@ -0,0 +1,320 @@
+<?php
+
+/**
+ * Pure-PHP ssh-agent client.
+ *
+ * {@internal See http://api.libssh.org/rfc/PROTOCOL.agent}
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2009 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\System\SSH\Agent;
+
+use phpseclib3\Common\Functions\Strings;
+use phpseclib3\Crypt\Common\PrivateKey;
+use phpseclib3\Crypt\Common\PublicKey;
+use phpseclib3\Crypt\DSA;
+use phpseclib3\Crypt\EC;
+use phpseclib3\Crypt\RSA;
+use phpseclib3\Exception\UnsupportedAlgorithmException;
+use phpseclib3\System\SSH\Agent;
+use phpseclib3\System\SSH\Common\Traits\ReadBytes;
+
+/**
+ * Pure-PHP ssh-agent client identity object
+ *
+ * Instantiation should only be performed by \phpseclib3\System\SSH\Agent class.
+ * This could be thought of as implementing an interface that phpseclib3\Crypt\RSA
+ * implements. ie. maybe a Net_SSH_Auth_PublicKey interface or something.
+ * The methods in this interface would be getPublicKey and sign since those are the
+ * methods phpseclib looks for to perform public key authentication.
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ * @internal
+ */
+class Identity implements PrivateKey
+{
+    use ReadBytes;
+
+    // Signature Flags
+    // See https://tools.ietf.org/html/draft-miller-ssh-agent-00#section-5.3
+    const SSH_AGENT_RSA2_256 = 2;
+    const SSH_AGENT_RSA2_512 = 4;
+
+    /**
+     * Key Object
+     *
+     * @var PublicKey
+     * @see self::getPublicKey()
+     */
+    private $key;
+
+    /**
+     * Key Blob
+     *
+     * @var string
+     * @see self::sign()
+     */
+    private $key_blob;
+
+    /**
+     * Socket Resource
+     *
+     * @var resource
+     * @see self::sign()
+     */
+    private $fsock;
+
+    /**
+     * Signature flags
+     *
+     * @var int
+     * @see self::sign()
+     * @see self::setHash()
+     */
+    private $flags = 0;
+
+    /**
+     * Curve Aliases
+     *
+     * @var array
+     */
+    private static $curveAliases = [
+        'secp256r1' => 'nistp256',
+        'secp384r1' => 'nistp384',
+        'secp521r1' => 'nistp521',
+        'Ed25519' => 'Ed25519'
+    ];
+
+    /**
+     * Default Constructor.
+     *
+     * @param resource $fsock
+     */
+    public function __construct($fsock)
+    {
+        $this->fsock = $fsock;
+    }
+
+    /**
+     * Set Public Key
+     *
+     * Called by \phpseclib3\System\SSH\Agent::requestIdentities()
+     *
+     * @param \phpseclib3\Crypt\Common\PublicKey $key
+     */
+    public function withPublicKey(PublicKey $key)
+    {
+        if ($key instanceof EC) {
+            if (is_array($key->getCurve()) || !isset(self::$curveAliases[$key->getCurve()])) {
+                throw new UnsupportedAlgorithmException('The only supported curves are nistp256, nistp384, nistp512 and Ed25519');
+            }
+        }
+
+        $new = clone $this;
+        $new->key = $key;
+        return $new;
+    }
+
+    /**
+     * Set Public Key
+     *
+     * Called by \phpseclib3\System\SSH\Agent::requestIdentities(). The key blob could be extracted from $this->key
+     * but this saves a small amount of computation.
+     *
+     * @param string $key_blob
+     */
+    public function withPublicKeyBlob($key_blob)
+    {
+        $new = clone $this;
+        $new->key_blob = $key_blob;
+        return $new;
+    }
+
+    /**
+     * Get Public Key
+     *
+     * Wrapper for $this->key->getPublicKey()
+     *
+     * @param string $type optional
+     * @return mixed
+     */
+    public function getPublicKey($type = 'PKCS8')
+    {
+        return $this->key;
+    }
+
+    /**
+     * Sets the hash
+     *
+     * @param string $hash
+     */
+    public function withHash($hash)
+    {
+        $new = clone $this;
+
+        $hash = strtolower($hash);
+
+        if ($this->key instanceof RSA) {
+            $new->flags = 0;
+            switch ($hash) {
+                case 'sha1':
+                    break;
+                case 'sha256':
+                    $new->flags = self::SSH_AGENT_RSA2_256;
+                    break;
+                case 'sha512':
+                    $new->flags = self::SSH_AGENT_RSA2_512;
+                    break;
+                default:
+                    throw new UnsupportedAlgorithmException('The only supported hashes for RSA are sha1, sha256 and sha512');
+            }
+        }
+        if ($this->key instanceof EC) {
+            switch ($this->key->getCurve()) {
+                case 'secp256r1':
+                    $expectedHash = 'sha256';
+                    break;
+                case 'secp384r1':
+                    $expectedHash = 'sha384';
+                    break;
+                //case 'secp521r1':
+                //case 'Ed25519':
+                default:
+                    $expectedHash = 'sha512';
+            }
+            if ($hash != $expectedHash) {
+                throw new UnsupportedAlgorithmException('The only supported hash for ' . self::$curveAliases[$this->key->getCurve()] . ' is ' . $expectedHash);
+            }
+        }
+        if ($this->key instanceof DSA) {
+            if ($hash != 'sha1') {
+                throw new UnsupportedAlgorithmException('The only supported hash for DSA is sha1');
+            }
+        }
+        return $new;
+    }
+
+    /**
+     * Sets the padding
+     *
+     * Only PKCS1 padding is supported
+     *
+     * @param string $padding
+     */
+    public function withPadding($padding)
+    {
+        if (!$this->key instanceof RSA) {
+            throw new UnsupportedAlgorithmException('Only RSA keys support padding');
+        }
+        if ($padding != RSA::SIGNATURE_PKCS1 && $padding != RSA::SIGNATURE_RELAXED_PKCS1) {
+            throw new UnsupportedAlgorithmException('ssh-agent can only create PKCS1 signatures');
+        }
+        return $this;
+    }
+
+    /**
+     * Determines the signature padding mode
+     *
+     * Valid values are: ASN1, SSH2, Raw
+     *
+     * @param string $format
+     */
+    public function withSignatureFormat($format)
+    {
+        if ($this->key instanceof RSA) {
+            throw new UnsupportedAlgorithmException('Only DSA and EC keys support signature format setting');
+        }
+        if ($format != 'SSH2') {
+            throw new UnsupportedAlgorithmException('Only SSH2-formatted signatures are currently supported');
+        }
+
+        return $this;
+    }
+
+    /**
+     * Returns the curve
+     *
+     * Returns a string if it's a named curve, an array if not
+     *
+     * @return string|array
+     */
+    public function getCurve()
+    {
+        if (!$this->key instanceof EC) {
+            throw new UnsupportedAlgorithmException('Only EC keys have curves');
+        }
+
+        return $this->key->getCurve();
+    }
+
+    /**
+     * Create a signature
+     *
+     * See "2.6.2 Protocol 2 private key signature request"
+     *
+     * @param string $message
+     * @return string
+     * @throws \RuntimeException on connection errors
+     * @throws \phpseclib3\Exception\UnsupportedAlgorithmException if the algorithm is unsupported
+     */
+    public function sign($message)
+    {
+        // the last parameter (currently 0) is for flags and ssh-agent only defines one flag (for ssh-dss): SSH_AGENT_OLD_SIGNATURE
+        $packet = Strings::packSSH2(
+            'CssN',
+            Agent::SSH_AGENTC_SIGN_REQUEST,
+            $this->key_blob,
+            $message,
+            $this->flags
+        );
+        $packet = Strings::packSSH2('s', $packet);
+        if (strlen($packet) != fputs($this->fsock, $packet)) {
+            throw new \RuntimeException('Connection closed during signing');
+        }
+
+        $length = current(unpack('N', $this->readBytes(4)));
+        $packet = $this->readBytes($length);
+
+        list($type, $signature_blob) = Strings::unpackSSH2('Cs', $packet);
+        if ($type != Agent::SSH_AGENT_SIGN_RESPONSE) {
+            throw new \RuntimeException('Unable to retrieve signature');
+        }
+
+        if (!$this->key instanceof RSA) {
+            return $signature_blob;
+        }
+
+        list($type, $signature_blob) = Strings::unpackSSH2('ss', $signature_blob);
+
+        return $signature_blob;
+    }
+
+    /**
+     * Returns the private key
+     *
+     * @param string $type
+     * @param array $options optional
+     * @return string
+     */
+    public function toString($type, array $options = [])
+    {
+        throw new \RuntimeException('ssh-agent does not provide a mechanism to get the private key');
+    }
+
+    /**
+     * Sets the password
+     *
+     * @param string|bool $password
+     * @return never
+     */
+    public function withPassword($password = false)
+    {
+        throw new \RuntimeException('ssh-agent does not provide a mechanism to get the private key');
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/System/SSH/Common/Traits/ReadBytes.php b/vendor/phpseclib/phpseclib/phpseclib/System/SSH/Common/Traits/ReadBytes.php
new file mode 100644
index 0000000..6fd032b
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/System/SSH/Common/Traits/ReadBytes.php
@@ -0,0 +1,37 @@
+<?php
+
+/**
+ * ReadBytes trait
+ *
+ * PHP version 5
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2015 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\System\SSH\Common\Traits;
+
+/**
+ * ReadBytes trait
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+trait ReadBytes
+{
+    /**
+     * Read data
+     *
+     * @param int $length
+     * @throws \RuntimeException on connection errors
+     */
+    public function readBytes($length)
+    {
+        $temp = fread($this->fsock, $length);
+        if (strlen($temp) != $length) {
+            throw new \RuntimeException("Expected $length bytes; got " . strlen($temp));
+        }
+        return $temp;
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/bootstrap.php b/vendor/phpseclib/phpseclib/phpseclib/bootstrap.php
new file mode 100644
index 0000000..517106c
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/bootstrap.php
@@ -0,0 +1,22 @@
+<?php
+
+/**
+ * Bootstrapping File for phpseclib
+ *
+ * composer isn't a requirement for phpseclib 2.0 but this file isn't really required
+ * either. it's a bonus for those using composer but if you're not phpseclib will
+ * still work
+ *
+ * @license http://www.opensource.org/licenses/mit-license.html MIT License
+ */
+
+if (extension_loaded('mbstring')) {
+    // 2 - MB_OVERLOAD_STRING
+    // mbstring.func_overload is deprecated in php 7.2 and removed in php 8.0.
+    if (version_compare(PHP_VERSION, '8.0.0') < 0 && ini_get('mbstring.func_overload') & 2) {
+        throw new UnexpectedValueException(
+            'Overloading of string functions using mbstring.func_overload ' .
+            'is not supported by phpseclib.'
+        );
+    }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/openssl.cnf b/vendor/phpseclib/phpseclib/phpseclib/openssl.cnf
new file mode 100644
index 0000000..2b8b52f
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/openssl.cnf
@@ -0,0 +1,6 @@
+# minimalist openssl.cnf file for use with phpseclib
+
+HOME			= .
+RANDFILE		= $ENV::HOME/.rnd
+
+[ v3_ca ]
diff --git a/vendor/unzerdev/php-sdk/.php-cs-fixer.php b/vendor/unzerdev/php-sdk/.php-cs-fixer.php
new file mode 100644
index 0000000..2143162
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/.php-cs-fixer.php
@@ -0,0 +1,31 @@
+<?php
+
+$finder = PhpCsFixer\Finder::create()
+    ->in(__DIR__ . '/src')
+    ->in(__DIR__ . '/test');
+
+$config = new PhpCsFixer\Config();
+return $config
+    ->setUsingCache(false)
+    ->setRules(
+        array(
+            '@PSR12' => true,
+            'no_blank_lines_after_phpdoc' => true,
+            'phpdoc_add_missing_param_annotation' => true,
+            'native_function_casing' => true,
+            'class_attributes_separation' => ['elements' => ['method' => 'one']],
+            'method_argument_space' => true,
+            'no_empty_statement' => true,
+            'no_leading_import_slash' => true,
+            'no_multiline_whitespace_around_double_arrow' => true,
+            'multiline_whitespace_before_semicolons' => true,
+            'no_singleline_whitespace_before_semicolons' => true,
+            'no_spaces_around_offset' => true,
+            'no_trailing_comma_in_singleline' => true,
+            'no_unused_imports' => true,
+            'normalize_index_brace' => true,
+            'phpdoc_align' => true,
+            'phpdoc_separation' => true,
+        )
+    )
+    ->setFinder($finder);
diff --git a/vendor/unzerdev/php-sdk/CHANGELOG.md b/vendor/unzerdev/php-sdk/CHANGELOG.md
index 1c08fa5..68bb889 100644
--- a/vendor/unzerdev/php-sdk/CHANGELOG.md
+++ b/vendor/unzerdev/php-sdk/CHANGELOG.md
@@ -1,32 +1,265 @@
 # Changelog
+
 All notable changes to this project will be documented in this file.
 
-The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
+The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) and this project adheres
+to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
+
+## [3.5.0](https://github.com/unzerdev/php-sdk/compare/3.4.1..3.5.0)
+
+This version adds support for Google Pay.
+
+### Added
+*   Add `\UnzerSDK\Resources\PaymentTypes\Googlepay` payment type.
+*   Add Example for Google Pay.
+*   Add PHP 8.3 version to composer.json
+
+## [3.4.1](https://github.com/unzerdev/php-sdk/compare/3.4.0..3.4.1)
+
+Revert deprecation of Sepa Direct Debit type.
+
+### Changed
+*   Revert deprecation of `\UnzerSDK\Resources\PaymentTypes\SepaDirectDebit`.
+
+## [3.4.0](https://github.com/unzerdev/php-sdk/compare/3.3.0..3.4.0)
+
+This version adds support for Paylater Direct Debit payment method.
+
+### Added
+*   Add `\UnzerSDK\Resources\PaymentTypes\PaylaterDirectDebit` payment type.
+*   Add Example for Direct Debit payment type.
+*   Add constants `\UnzerSDK\Constants\CustomerRegistrationLevel` for valid "registrationLevel" values. Relevant for setting riskData.
+*   Add riskData to PaylaterInstallment example.
+*   Add riskData to PaylaterInvoice example.
+*   Add bank account information to `\UnzerSDK\Resources\PaymentTypes\Sofort` class.
+
+### Changed
+*   Allow `null` for setters in `\UnzerSDK\Traits\HasAccountInformation` trait to avoid error when e.g. API response contains empty bic.
+*   Apple Pay example: Moved merchant identifier to constant in `_enableExamples.php` where it can be configured.
+
+### Deprecated
+*   `\UnzerSDK\Resources\PaymentTypes\SepaDirectDebit`, please use `\UnzerSDK\Resources\PaymentTypes\PaylaterDirectDebit`.
+*   `\UnzerSDK\Resources\PaymentTypes\SepaDirectDebitSecured`, please use `\UnzerSDK\Resources\PaymentTypes\PaylaterDirectDebit`.
+
+## [3.3.0](https://github.com/unzerdev/php-sdk/compare/3.2.0..3.3.0)
+### Added
+*   Chargeback transaction type.
+    *   Add class `\UnzerSDK\Resources\TransactionTypes\Chargeback`.
+    *   Add methods `\UnzerSDK\Unzer::fetchChargeback` and `\UnzerSDK\Unzer::fetchChargebackById` to fetch chargeback information.
+*   Add `\UnzerSDK\Resources\PaymentTypes\PayU` payment type.
+*   Add example for PayU payment type.
+
+## [3.2.0](https://github.com/unzerdev/php-sdk/compare/3.1.0..3.2.0)
+
+### Added
+*   Support for "Paylater Installment" payment type.
+    *   Add payment type "PaylaterInstallment"
+    *   Add `\UnzerSDK\Unzer::fetchPaylaterInstallmentPlans` method to get available installment plans. 
+*   Add "Paylater Installment" example.
+
+### Deprecated
+*   `\UnzerSDK\Resources\Payment::getCancellation`, please use `getCancellation` method of `\UnzerSDK\Resources\TransactionTypes\Charge` or `\UnzerSDK\Resources\TransactionTypes\Authorization` instead, depending on your use-case.
+*   `\UnzerSDK\Resources\PaymentTypes\InstallmentSecured`, will be replaced by `\UnzerSDK\Resources\PaymentTypes\PaylaterInstallment` in the future.
+
+### Changed
+*   Remove test-only constants and functions from `\UnzerSDK\Services\EnvironmentService` and move them to `\UnzerSDK\test\Helper\TestEnvironmentService`.
+*   `\UnzerSDK\Unzer::fetchPayPage()` method no longer automatically fetches linked Paypage to avoid issues with expired payment pages. 
+
+## [3.1.0](https://github.com/unzerdev/php-sdk/compare/3.0.0..3.1.0)
+
+### Added
+
+*   Add payment types "Post Finance Card" and "Post Finance eFinance".
+*   Add setter/getter to PayPage for `recurrenceType` and `exemptionType`.
+
+### Changed
+
+*   Make setter and getter for `PayPage::AdditionalAttributes` public to allow adding information manually.
+
+## [3.0.0](https://github.com/unzerdev/php-sdk/compare/1.2.3.0..3.0.0)
+
+### Added
+
+*   Enable PHP version 8.2 in composer.json.
+*   Add paypage property to `Payment` class.
+*   Add class `\UnzerSDK\Resources\EmbeddedResources\CardTransactionData`.
+    Set as "card" field of additionalTransactionData    
+*   Add constants `\UnzerSDK\Constants\LiabilityShiftIndicator` for valid liability shift indicator values, relevant for card payment.
+    *   Charge and authorize transactions with card can contain that indicator in Api Response. (`CardTransactionData::$liability`)
+
+### Changed
+
+*   Switch SDK to 3-digit versioning. First digit, formerly representing API version gets omitted (1.3.0.0 -> 3.0.0).
+*   Add Type declaration to methods where applicable.
+*   Enable `Unzer::fetchPaymentRefund` and `Unzer::fetchPaymentReversal` to use resource ID as parameter.
+*   Raise minimum PHP version to 7.4 in composer.json
+*   Handling of additionalTransactionData:
+    *   `additionalTransactionData.card` from API responses will be mapped on `\UnzerSDK\Resources\EmbeddedResources\CardTransactionData` now.
+    *   Remove `paymentType` parameter of `\UnzerSDK\Traits\HasRecurrenceType::setRecurrenceType`, it will always be set for `card` field of `additionalTransactionData`.
+
+## [1.2.3.0](https://github.com/unzerdev/php-sdk/compare/1.2.2.0..1.2.3.0)
+
+### Changed
+
+*   Resource ID fields won't be sent in payment request if they are empty anymore.
+
+### Added
+
+*   Add support for express checkout via PayPal.
+    *   Add support to set `checkoutType` for charge/authorize request.
+    *   Add transaction status `resumed`.
+    *   Add `updateCharge` and `updateAuthorization` method to `Unzer` class
+
+*   Add missing "payment" webhook event.
+*   Add `invoiceId` to Cancellation class.
+
+### Deprecated
+
+*   Marked unsecured `Invoice` class as deprecated.
+
+## [1.2.2.0](https://github.com/unzerdev/php-sdk/compare/1.2.1.0..1.2.2.0)
+
+### Changed
+
+*   Sandbox API-URL will automatically be used for API calls depending on the private key.
+*   Adjust calculations of `Unzer::cancelPayment` method to avoid float precision issues.
+
+## [1.2.1.0](https://github.com/unzerdev/php-sdk/compare/1.2.0.0..1.2.1.0)
+
+### Added
+
+*   Allow fetching payment type config for paylater invoice.
+*   Add payment type "Klarna".
+*   Provide Example for "Klarna" payment method.
+*   Add `language` property to Customer class which is required for klarna payments.
+
+### Changed
+
+*   Update UPL Invoice Example to display the "my consent" link in payment form.
+*   Update examples to display shortId on success page also for payments done via payment pages.
+*   Add background and logo image URLs to examples, which can be adjusted in the `_enableExamples.php` file.
+*   General adjustments of examples:
+    *   Ensure all payment forms use correct css class.
+    *   Place submit button into an extra div element.
+    *   Disable submit button by default if a payment type has mandatory input fields.
+
+### Deprecated
+
+*   The `activateRecurring` method for Card and SepaDirectDebit types is deprecated.
+    *   For Card recurring please use `Charge|Authorization::setRecurrenceType` and perform a charge or authorization.
+    *   For Sepa Direct Debit a successful charge will automatically set the type resource as recurring.
+
+## [1.2.0.0](https://github.com/unzerdev/php-sdk/compare/1.1.5.0..1.2.0.0)
+
+### Added
+
+*   Add payment type Paylater Invoice.
+*   Add properties `companyType` and `owner` to `CompanyInfo` class.
+*   Add `shippingType` property to `Address` class.
+*   Allow setting the clientIp manually.
+*   Allow setting `riskData` for authorize request.
+*   Allow setting shipping data for charge request such as `deliveryTrackingId`, `deliveryService` and `returnTrackingId`.
+*   Add new methods for `authorize` and `charge` transactions that use prepared objects only:
+    *   `Unzer::performAuthorization()`
+    *   `Unzer::performCharge()`
+    *   `Unzer::performChargeOnPayment()`
+*   Add new methods to cancel payments done via paylater-invoice type:
+    *   `Unzer::cancelAuthorizedPayment()`
+    *   `Unzer::cancelChargedPayment()`
+*   Add new methods to fetch cancellations of payment done via paylater-invoice type:
+    *   `Unzer::fetchPaymentReversal()`
+    *   `Unzer::fetchPaymentRefund()`
+*   Add Paylater Invoice example including the function to capture an authorized payment.
+
+### Changed
+
+*   Remove redundant `currency` parameter from `Unzer::chargePayment()` method.
+*   Add `geoLocation` property to all payment type classes.
+*   Several minor improvements.
+*   Add account information coming from PAPI to Authorize class.
+
+### Deprecated
+
+*   Classes:
+    *   Mark `InvoiceSecured` as deprecated, will be replaced by `PaylaterInvoice`.
+*   Methods:
+    *   Mark `Unzer::authorize()` as deprecated. Please use `Unzer::performAuthorization()` instead.
+    *   Mark `Unzer::charge()` as deprecated. Please use `Unzer::performCharge()` instead.
+    *   Mark `Unzer::chargePayment()` as deprecated. Please use `Unzer::performChargeOnPayment()` instead.
+    *   Mark `Unzer::chargeAuthorization()` as deprecated. Please use `Unzer::performChargeOnPayment()` instead.
+
+## [1.1.5.0](https://github.com/unzerdev/php-sdk/compare/1.1.4.2..1.1.5.0)
+
+### Added
+
+*   Add Support for basket `v2` resource.
+
+### Changed
+
+*   Add support for payment state `create` which can occur when using payment pages.
+*   Examples:
+    *   Use `v2/basket` resource for secured payment methods and payment pages.
+    *   Remove broken image-URLs of payment page examples.
+*   Several minor improvements.
+
+## [1.1.4.2](https://github.com/unzerdev/php-sdk/compare/1.1.4.1..1.1.4.2)
+
+### Added
+
+*   Enable PHP 8.1 compatibility.
+
+### Changed
+
+* Fix an issue that can cause an exception when fetching a payment that contained a "cancel-authorize" transaction even though the payment has no authorization transaction.
+* Update broken documentation links in readme.
+* Several minor improvements.
+
+## [1.1.4.1](https://github.com/unzerdev/php-sdk/compare/1.1.4.0..1.1.4.1)
+
+### Added
+
+*   Added Apple Pay example.
+
+### Changed
+
+*   Adjust `cancelAmount` logic to work properly with Invoice Secured payments.
+*   Updated jQuery and frameworks used in examples.
+*   Fixed failing card tests.
+*   Several minor improvements.
 
 ## [1.1.4.0](https://github.com/unzerdev/php-sdk/compare/1.1.3.0..1.1.4.0)
+
 ### Added
+
 *   Enable recurrence type to be set for `charge`, `authorize` and `activateRecurringPayment` methods.
 
 ### Changed
-* Enable recurring examples (card paypal)to trigger subsequent transaction from success page.
-* Enable card recurring example to use recurrence type.
-* Several minor improvements.
+
+*   Enable recurring examples (card paypal)to trigger subsequent transaction from success page.
+*   Enable card recurring example to use recurrence type.
+*   Several minor improvements.
 
 ## [1.1.3.0](https://github.com/unzerdev/php-sdk/compare/1.1.2.0..1.1.3.0)
+
 ### Added
+
 *   Enable PHP 8.0 compatibility.
 *   Allow PHPUnit version 8.x and 9.x in composer dev requirements and adjust tests accordingly.
 *   Payment Page examples: Add missing customer information that are required for payment with Instalment (address, dob, salutation).
 
 ### Changed
+
 *   `\UnzerSDK\Services\HttpService::handleErrors` explicitly casts response code to int, to ensure same behaviour on all PHP versions.
 *   Several minor changes.
 
 ## [1.1.2.0](https://github.com/unzerdev/php-sdk/compare/1.1.1.1..1.1.2.0)
+
 ### Added
+
 *   Introduce the payment type Applepay.
 
 ### Changed
+
 *   Examples:
     *   Card Examples - Ensure that error messages are displayed just one time.
     *   Configuration - Change default protocol to https.
@@ -36,14 +269,17 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) a
 ## [1.1.1.1](https://github.com/unzerdev/php-sdk/compare/1.1.1.0..1.1.1.1)
 
 ### Fix
+
 *   Change debug logging of failed tests that depend on another one to work as expected.
 *   PayPal recurring example: Response handling changed to check the recurring status of the payment type.
 
 ### Added
+
 *   Extended testing for Instalment payment type.
 *   Cards (extended) example using email UI element.
 
 ### Changed
+
 *   Remove PhpUnit 8 support.
 *   Card recurring example using email UI element.
 *   Card example and paypage examples use a dummy customer-email to ensure they work with 3ds2.
@@ -52,25 +288,29 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) a
 ## [1.1.1.0](https://github.com/unzerdev/php-sdk/compare/1.1.0.0..1.1.1.0)
 
 ### Changed
+
 *   Add email property to payment type `card` to meet 3Ds2.x regulations.
 *   Several minor changes.
 
 ## [1.1.0.0](https://github.com/unzerdev/php-sdk/compare/1260b8314af1ac461e33f0cfb382ffcd0e87c105..1.1.0.0)
 
 ### Changed
+
 *   Rebranding of the SDK.
 *   Removed payment type string from URL when fetching a payment type resource.
 *   Replace payment methods guaranteed/factoring by secured payment methods, i.e.:
-    *   `InvoiceGuaranteed` and `InvoiceFactoring` replaced by `InvoiceSecured`
-    *   `SepaDirectDebitGuaranteed` replaced by `SepaDirectDebitSecured`
-    *   `HirePurchaseDirectDebit` replaced by `InstallmentSecured`
+    *   `InvoiceGuaranteed` and `InvoiceFactoring` replaced by `InvoiceSecured`.
+    *   `SepaDirectDebitGuaranteed` replaced by `SepaDirectDebitSecured`.
+    *   `HirePurchaseDirectDebit` replaced by `InstallmentSecured`.
     *   Basket is now mandatory for all those payment types above.
 *   Added mapping of old payment type ids to the new payment type resources.
 *   Constant in `\UnzerSDK\Constants\ApiResponseCodes` got renamed:
     *   `API_ERROR_IVF_REQUIRES_CUSTOMER` renamed to `API_ERROR_FACTORING_REQUIRES_CUSTOMER`.
     *   `API_ERROR_IVF_REQUIRES_BASKET` renamed to `API_ERROR_FACTORING_REQUIRES_BASKET`.
 *   Several minor changes.
+
 ### Remove
+
 *   Remove deprecated methods:
     *   getAmountTotal
     *   setAmountTotal
diff --git a/vendor/unzerdev/php-sdk/LICENSE b/vendor/unzerdev/php-sdk/LICENSE
index 1d33e0c..261eeb9 100644
--- a/vendor/unzerdev/php-sdk/LICENSE
+++ b/vendor/unzerdev/php-sdk/LICENSE
@@ -1,14 +1,201 @@
-Copyright (C) 2020 - today Unzer E-Com GmbH
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
 
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
 
-http://www.apache.org/licenses/LICENSE-2.0
+   1. Definitions.
 
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
 
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
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+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
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+
+      "Object" form shall mean any form resulting from mechanical
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+
+      "Work" shall mean the work of authorship, whether in Source or
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+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
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+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
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+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
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+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
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+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
diff --git a/vendor/unzerdev/php-sdk/NOTICE b/vendor/unzerdev/php-sdk/NOTICE
new file mode 100644
index 0000000..ff692a0
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/NOTICE
@@ -0,0 +1,14 @@
+Copyright (C) 2020 - today Unzer GmbH
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
diff --git a/vendor/unzerdev/php-sdk/README.md b/vendor/unzerdev/php-sdk/README.md
index 3c5d628..2f22658 100644
--- a/vendor/unzerdev/php-sdk/README.md
+++ b/vendor/unzerdev/php-sdk/README.md
@@ -1,39 +1,21 @@
 [![Latest Version on Packagist](https://img.shields.io/packagist/v/unzerdev/php-sdk.svg?style=flat-square)](https://packagist.org/packages/unzerdev/php-sdk)
-[![PHP 7.1](https://img.shields.io/badge/php-7.1-blue.svg)](http://www.php.net)
-[![PHP 7.2](https://img.shields.io/badge/php-7.2-blue.svg)](http://www.php.net)
-[![PHP 7.3](https://img.shields.io/badge/php-7.3-blue.svg)](http://www.php.net)
 [![PHP 7.4](https://img.shields.io/badge/php-7.4-blue.svg)](http://www.php.net)
 [![PHP 8.0](https://img.shields.io/badge/php-8.0-blue.svg)](http://www.php.net)
+[![PHP 8.1](https://img.shields.io/badge/php-8.1-blue.svg)](http://www.php.net)
+[![PHP 8.2](https://img.shields.io/badge/php-8.2-blue.svg)](http://www.php.net)
 
-![Logo](https://dev.unzer.com/wp-content/uploads/2020/09/Unzer__PrimaryLogo_Raspberry_RGB.png)
+![Logo](unzer_logo.svg)
 
 # Unzer php-sdk
 This SDK provides for an easy way to connect to the Unzer Rest API.
 
 Please refer to the following documentation for installation instructions and usage information.
 
-*   [API Documentation](https://docs.unzer.com/overview)
-*   [PHP SDK Documentation](https://docs.unzer.com/integrate/php-sdk)
-*   [How to use the examples](https://docs.unzer.com/integrate/php-sdk/example-implementations)
-*   [Debugging](https://docs.unzer.com/integrate/php-sdk/logging-and-debugging)
-
-## Supported payment types
-*   Alipay
-*   Card (credit card and debit card) + Recurring
-*   EPS
-*   Giropay
-*   iDEAL
-*   Invoice
-*   PayPal + Recurring
-*   Prepayment
-*   Przelewy24
-*   SEPA direct debit + Recurring
-*   SOFORT
-*   Unzer Bank Transfer (PIS)
-*   Unzer Direct Debit (secured) + Recurring
-*   Unzer Instalment (secured)
-*   Unzer Invoice (secured)
-*   WeChat Pay
+*   [API Documentation](https://docs.unzer.com)
+*   [PHP SDK Documentation](https://docs.unzer.com/server-side-integration/php-sdk-integration)
+*   [How to use the examples](https://docs.unzer.com/server-side-integration/php-sdk-integration/php-example-implementation)
+*   [Debugging](https://docs.unzer.com/server-side-integration/php-sdk-integration/php-error-handling/#debug-log)
+*   [Supported payment types](https://docs.unzer.com/online-payments/supported-payment-methods)
 
 ## Supported features
 *   Webhooks and event handling
@@ -53,3 +35,6 @@ For any issues or questions please get in touch with our support team.
 ### Phone
 * DE: [+49 6221 43101-00](tel:+4962214310100)
 * AT: [+43 1 513 66 33 669](tel:+4315136633669)
+
+### Twitter
+[@UnzerTech](https://twitter.com/UnzerTech)
diff --git a/vendor/unzerdev/php-sdk/composer.json b/vendor/unzerdev/php-sdk/composer.json
index 0c9f9ea..7e2a8f2 100644
--- a/vendor/unzerdev/php-sdk/composer.json
+++ b/vendor/unzerdev/php-sdk/composer.json
@@ -1,15 +1,15 @@
 {
   "name": "unzerdev/php-sdk",
-  "description": "This is the php sdk to connect to the Unzer rest api.",
+  "description": "This is the php sdk to connect to the Unzer rest API.",
   "minimum-stability": "stable",
   "license": "Apache-2.0",
   "require": {
-    "php": "~7.1.0|~7.2.0|~7.3.0|~7.4.0|~8.0.0",
+    "php": "~7.4.0|~8.0.0|~8.1.0|~8.2.0|~8.3.0",
     "ext-json": "*"
   },
   "require-dev": {
     "phpunit/phpunit": ">6.5 <10.0",
-    "friendsofphp/php-cs-fixer": "^2.0"
+    "friendsofphp/php-cs-fixer": "^3.0"
   },
   "suggest": {
     "ext-curl": "*"
diff --git a/vendor/unzerdev/php-sdk/examples/Alipay/Constants.php b/vendor/unzerdev/php-sdk/examples/Alipay/Constants.php
index e032a99..a901fd7 100644
--- a/vendor/unzerdev/php-sdk/examples/Alipay/Constants.php
+++ b/vendor/unzerdev/php-sdk/examples/Alipay/Constants.php
@@ -2,25 +2,8 @@
 /**
  * This file defines the constants needed for the alipay example.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 require_once __DIR__ . '/../Constants.php';
diff --git a/vendor/unzerdev/php-sdk/examples/Alipay/Controller.php b/vendor/unzerdev/php-sdk/examples/Alipay/Controller.php
index 4255bee..b3a955d 100644
--- a/vendor/unzerdev/php-sdk/examples/Alipay/Controller.php
+++ b/vendor/unzerdev/php-sdk/examples/Alipay/Controller.php
@@ -3,25 +3,8 @@
  * This is the controller for the alipay example.
  * It is called when the pay button on the index page is clicked.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
diff --git a/vendor/unzerdev/php-sdk/examples/Alipay/index.php b/vendor/unzerdev/php-sdk/examples/Alipay/index.php
index bbfb0a2..36a472e 100644
--- a/vendor/unzerdev/php-sdk/examples/Alipay/index.php
+++ b/vendor/unzerdev/php-sdk/examples/Alipay/index.php
@@ -2,25 +2,8 @@
 /**
  * This file provides an example implementation of the alipay payment type.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
@@ -36,8 +19,9 @@
 <head>
     <meta charset="UTF-8">
     <title>Unzer UI Examples</title>
-    <script src="https://code.jquery.com/jquery-3.5.1.min.js"
-            integrity="sha256-9/aliU8dGd2tb6OSsuzixeV4y/faTqgFtohetphbbj0=" crossorigin="anonymous"></script>
+    <script src="https://code.jquery.com/jquery-3.6.0.min.js"
+            integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4="
+            crossorigin="anonymous"></script>
 
     <link rel="stylesheet" href="https://static.unzer.com/v1/unzer.css" />
     <script type="text/javascript" src="https://static.unzer.com/v1/unzer.js"></script>
@@ -54,7 +38,9 @@
 
 <form id="payment-form" class="unzerUI form" novalidate>
     <div class="field" id="error-holder" style="color: #9f3a38"></div>
-    <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    <div class="field">
+        <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    </div>
 </form>
 
 <script>
diff --git a/vendor/unzerdev/php-sdk/examples/Applepay/Constants.php b/vendor/unzerdev/php-sdk/examples/Applepay/Constants.php
new file mode 100644
index 0000000..41f7580
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/examples/Applepay/Constants.php
@@ -0,0 +1,12 @@
+<?php
+/**
+ * This file defines the constants needed for the Apple Pay example.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+
+require_once __DIR__ . '/../Constants.php';
+
+define('EXAMPLE_URL', EXAMPLE_BASE_FOLDER . 'Applepay');
+define('CONTROLLER_URL', EXAMPLE_URL . '/Controller.php');
diff --git a/vendor/unzerdev/php-sdk/examples/Applepay/Controller.php b/vendor/unzerdev/php-sdk/examples/Applepay/Controller.php
new file mode 100644
index 0000000..6d3fe5a
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/examples/Applepay/Controller.php
@@ -0,0 +1,80 @@
+<?php
+/**
+ * This is the controller for the Apple Pay example.
+ * It is called when the pay button on the index page is clicked.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+
+/** Require the constants of this example */
+require_once __DIR__ . '/Constants.php';
+
+/** @noinspection PhpIncludeInspection */
+/** Require the composer autoloader file */
+require_once __DIR__ . '/../../../../autoload.php';
+
+use UnzerSDK\examples\ExampleDebugHandler;
+use UnzerSDK\Exceptions\UnzerApiException;
+use UnzerSDK\Unzer;
+
+session_start();
+session_unset();
+
+$clientMessage = 'Something went wrong. Please try again later.';
+$merchantMessage = 'Something went wrong. Please try again later.';
+
+function redirect($url, $merchantMessage = '', $clientMessage = '')
+{
+    $_SESSION['merchantMessage'] = $merchantMessage;
+    $_SESSION['clientMessage']   = $clientMessage;
+    header('Location: ' . $url);
+    die();
+}
+
+// These lines are just for this example
+$jsonData      = json_decode(file_get_contents('php://input'), false);
+$paymentTypeId = $jsonData->typeId;
+$transactionType = $jsonData->transaction_type ?? 'authorize';
+
+// You will need the id of the payment type created in the frontend (index.php)
+if (empty($paymentTypeId)) {
+    echo json_encode(['result' => false]);
+    return;
+}
+
+// Catch API errors, write the message to your log and show the ClientMessage to the client.
+try {
+    // Create an Unzer object using your private key and register a debug handler if you want to.
+    $unzer = new Unzer(UNZER_PAPI_PRIVATE_KEY);
+    $unzer->setDebugMode(true)->setDebugHandler(new ExampleDebugHandler());
+
+    switch ($transactionType) {
+        case 'charge':
+            $transaction = $unzer->charge(12.99, 'EUR', $paymentTypeId, RETURN_CONTROLLER_URL);
+            break;
+        default:
+            $transaction = $unzer->authorize(12.99, 'EUR', $paymentTypeId, RETURN_CONTROLLER_URL);
+            break;
+    }
+
+    // You'll need to remember the paymentId for later in the ReturnController
+    $_SESSION['PaymentId'] = $transaction->getPaymentId();
+    $_SESSION['ShortId'] = $transaction->getShortId();
+
+    if ($transaction->isSuccess()) {
+        echo json_encode(['transactionStatus' => 'success']);
+        return;
+    }
+    if ($transaction->isPending()) {
+        echo json_encode(['transactionStatus' => 'pending']);
+        return;
+    }
+} catch (UnzerApiException $e) {
+    $_SESSION['merchantMessage'] = $e->getMerchantMessage();
+    $_SESSION['clientMessage'] = $e->getClientMessage();
+} catch (RuntimeException $e) {
+    $_SESSION['merchantMessage'] = $e->getMessage();
+}
+
+echo json_encode(['transactionStatus' => 'error']);
diff --git a/vendor/unzerdev/php-sdk/examples/Applepay/index.php b/vendor/unzerdev/php-sdk/examples/Applepay/index.php
new file mode 100644
index 0000000..2765c13
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/examples/Applepay/index.php
@@ -0,0 +1,241 @@
+<?php
+/**
+ * This file provides an example implementation of the Apple Pay payment type.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+
+/** Require the constants of this example */
+require_once __DIR__ . '/Constants.php';
+
+/** @noinspection PhpIncludeInspection */
+/** Require the composer autoloader file */
+require_once __DIR__ . '/../../../../autoload.php';
+?>
+
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <title>Unzer UI Examples</title>
+    <script src="https://code.jquery.com/jquery-3.6.0.min.js"
+            integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4="
+            crossorigin="anonymous"></script>
+
+    <link rel="stylesheet" href="https://static.unzer.com/v1/unzer.css" />
+    <script type="text/javascript" src="https://static.unzer.com/v1/unzer.js"></script>
+    <style>
+        .apple-pay-button {
+            display: inline-block;
+            -webkit-appearance: -apple-pay-button;
+            -apple-pay-button-type: buy;
+            -apple-pay-button-style: black;
+        }
+
+        .button-well {
+            text-align: center;
+            position: relative;
+            background: #f1f1f1;
+            border-radius: 3px;
+            -webkit-transition: background 0.3s;
+            transition: background 0.3s;
+            margin: 10px;
+            border: 1px solid transparent;
+        }
+
+        .unsupportedBrowserMessage {
+            color: #888;
+            padding: .375rem .75rem;
+            cursor: not-allowed;
+            line-height: 1.5;
+        }
+
+        .unsupportedBrowserMessage p {
+            margin: 0;
+        }
+
+        .applePayButtonContainer {
+            position: relative;
+        }
+    </style>
+</head>
+
+<body style="margin: 70px 70px 0;">
+
+<p><a href="https://docs.unzer.com/docs/testdata" target="_blank">Click here to open our test data in new tab.</a></p>
+
+<form id="payment-form" class="unzerUI form" novalidate>
+    <!-- This is just for the example - Start -->
+    <div class="fields inline">
+        <label for="transaction_type">Chose the transaction type you want to test:</label>
+        <div class="field">
+            <div class="unzerUI radio checkbox">
+                <input type="radio" name="transaction_type" value="authorize" checked="">
+                <label>Authorize</label>
+            </div>
+        </div>
+        <div class="field">
+            <div class="unzerUI radio checkbox">
+                <input type="radio" name="transaction_type" value="charge">
+                <label>Charge</label>
+            </div>
+        </div>
+    </div>
+    <!-- This is just for the example - End -->
+
+    <div>
+        <div class="field" id="error-holder" style="color: #9f3a38"> </div>
+        <div class="button-well">
+            <div class="applePayButtonContainer">
+                <div class="apple-pay-button apple-pay-button-black" lang="us"
+                     onclick="setupApplePaySession()"
+                     title="Start Apple Pay" role="link" tabindex="0">
+                </div>
+            </div>
+        </div>
+    </div>
+</form>
+
+<script>
+    const $errorHolder = $('#error-holder');
+
+    const unzerInstance = new unzer('<?php echo UNZER_PAPI_PUBLIC_KEY; ?>');
+    const unzerApplePayInstance = unzerInstance.ApplePay();
+
+    function startApplePaySession(applePayPaymentRequest) {
+        if (window.ApplePaySession && ApplePaySession.canMakePayments()) {
+            const session = new ApplePaySession(6, applePayPaymentRequest);
+            session.onvalidatemerchant = function (event) {
+                merchantValidationCallback(session, event);
+            };
+
+            session.onpaymentauthorized = function (event) {
+                applePayAuthorizedCallback(event, session);
+            };
+
+            session.oncancel = function (event) {
+                onCancelCallback(event);
+            };
+
+            session.begin();
+        } else {
+            handleError("This device does not support Apple Pay!");
+        }
+    }
+
+    function applePayAuthorizedCallback(event, session) {
+        // Get payment data from event. "event.payment" also contains contact information, if they were set via Apple Pay.
+        const paymentData = event.payment.token.paymentData;
+        const $form = $('form[id="payment-form"]');
+        const formObject = QueryStringToObject($form.serialize());
+
+        // Create an Unzer instance with your public key
+        unzerApplePayInstance.createResource(paymentData)
+            .then(function (createdResource) {
+                formObject.typeId = createdResource.id;
+                // Hand over the type ID to your backend.
+                $.post('./Controller.php', JSON.stringify(formObject), null, 'json')
+                    .done(function (result) {
+                        // Handle the transaction respone from backend.
+                        const status = result.transactionStatus;
+                        if (status === 'success' || status === 'pending') {
+                            session.completePayment({status: window.ApplePaySession.STATUS_SUCCESS});
+                            window.location.href = '<?php echo RETURN_CONTROLLER_URL; ?>';
+                        } else {
+                            window.location.href = '<?php echo FAILURE_URL; ?>';
+                            abortPaymentSession(session);
+                            session.abort();
+                        }
+                    })
+                    .fail(function (error) {
+                        handleError(error.statusText);
+                        abortPaymentSession(session);
+                    });
+            })
+            .catch(function (error) {
+                handleError(error.message);
+                abortPaymentSession(session);
+            })
+    }
+
+    function merchantValidationCallback(session, event) {
+        $.post('./merchantvalidation.php', JSON.stringify({"merchantValidationUrl": event.validationURL}), null, 'json')
+            .done(function (validationResponse) {
+                try {
+                    session.completeMerchantValidation(validationResponse);
+                } catch (e) {
+                    alert(e.message);
+                }
+
+            })
+            .fail(function (error) {
+                handleError(JSON.stringify(error.statusText));
+                session.abort();
+            });
+    }
+
+    function onCancelCallback(event) {
+        handleError('Canceled by user');
+    }
+
+    // Get called when pay button is clicked. Prepare ApplePayPaymentRequest and call `startApplePaySession` with it.
+    function setupApplePaySession() {
+        const applePayPaymentRequest = {
+            countryCode: 'DE',
+            currencyCode: "EUR",
+            total: {
+                label: 'Unzer gmbh',
+                amount: 12.99
+            },
+            supportedNetworks: ['amex', 'visa', 'masterCard', 'discover'],
+            merchantCapabilities: ['supports3DS', 'supportsCredit', 'supportsDebit'],
+            requiredShippingContactFields: ['postalAddress', 'name', 'phone', 'email'],
+            requiredBillingContactFields: ['postalAddress', 'name', 'phone', 'email'],
+            lineItems: [
+                {
+                    "label": "Bag Subtotal",
+                    "type": "final",
+                    "amount": "10.00"
+                },
+                {
+                    "label": "Free Shipping",
+                    "amount": "0.00",
+                    "type": "final"
+                },
+                {
+                    "label": "Estimated Tax",
+                    "amount": "2.99",
+                    "type": "final"
+                }
+            ]
+        };
+
+        startApplePaySession(applePayPaymentRequest);
+    }
+
+    // Updates the error holder with the given message.
+    function handleError (message) {
+        $errorHolder.html(message);
+    }
+
+    // Translates query string to object
+    function QueryStringToObject(queryString) {
+        const pairs = queryString.slice().split('&');
+        let result = {};
+
+        pairs.forEach(function(pair) {
+            pair = pair.split('=');
+            result[pair[0]] = decodeURIComponent(pair[1] || '');
+        });
+        return JSON.parse(JSON.stringify(result));
+    }
+
+    // abort current payment session.
+    function abortPaymentSession(session) {
+        session.completePayment({status: window.ApplePaySession.STATUS_FAILURE});
+        session.abort();
+    }
+</script>
+</body>
+</html>
diff --git a/vendor/unzerdev/php-sdk/examples/Applepay/merchantvalidation.php b/vendor/unzerdev/php-sdk/examples/Applepay/merchantvalidation.php
new file mode 100644
index 0000000..fb3beb4
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/examples/Applepay/merchantvalidation.php
@@ -0,0 +1,65 @@
+<?php
+/**
+ * This is the controller for the Apple Pay example.
+ * It is called when the pay button on the index page is clicked.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+/** Require the constants of this example */
+require_once __DIR__ . '/Constants.php';
+
+/** @noinspection PhpIncludeInspection */
+/** Require the composer autoloader file */
+require_once __DIR__ . '/../../../../autoload.php';
+
+use UnzerSDK\Adapter\ApplepayAdapter;
+use UnzerSDK\Exceptions\ApplepayMerchantValidationException;
+use UnzerSDK\Resources\ExternalResources\ApplepaySession;
+use UnzerSDK\examples\ExampleDebugHandler;
+use UnzerSDK\Unzer;
+
+session_start();
+session_unset();
+
+$clientMessage = 'Something went wrong. Please try again later.';
+$merchantMessage = 'Something went wrong. Please try again later.';
+
+function redirect($url, $merchantMessage = '', $clientMessage = '')
+{
+    $_SESSION['merchantMessage'] = $merchantMessage;
+    $_SESSION['clientMessage']   = $clientMessage;
+    header('Location: ' . $url);
+    die();
+}
+
+// Get the merchant validation URL from the frontend.
+$jsonData = json_decode(file_get_contents('php://input'), true);
+$merchantValidationURL = urldecode($jsonData['merchantValidationUrl']);
+
+// Do the merchant validation request and return the result to the frontend.
+try {
+    // Create an Unzer object using your private key and register a debug handler if you want to.
+    $unzer = new Unzer(UNZER_PAPI_PRIVATE_KEY);
+    $unzer->setDebugMode(true)->setDebugHandler(new ExampleDebugHandler());
+
+    /*
+     * Just for demonstration purpose.
+     * It is NOT RECOMMENDED to get get the domain name this way on a production environment, because of security reasons.
+     */
+    $domainName = $_SERVER['HTTP_HOST'];
+
+    $applepaySession = new ApplepaySession(UNZER_EXAMPLE_APPLEPAY_MERCHANT_IDENTIFIER, 'PHP-SDK Example', $domainName);
+    $appleAdapter = new ApplepayAdapter();
+
+    $appleAdapter->init(UNZER_EXAMPLE_APPLEPAY_MERCHANT_CERT, UNZER_EXAMPLE_APPLEPAY_MERCHANT_CERT_KEY);
+
+    // Send the applepay validation request.
+    $validationResponse = $appleAdapter->validateApplePayMerchant($merchantValidationURL, $applepaySession);
+
+    // Return the validation response to your frontend.
+    print_r($validationResponse, 0);
+} catch (RuntimeException | ApplepayMerchantValidationException $e) {
+    // Dont give internal error directly to the frontend.
+    throw new Exception('There has been an error validating the merchant. Please try again later.');
+}
diff --git a/vendor/unzerdev/php-sdk/examples/Backend/CancelPaymentController.php b/vendor/unzerdev/php-sdk/examples/Backend/CancelPaymentController.php
new file mode 100644
index 0000000..f2a7e07
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/examples/Backend/CancelPaymentController.php
@@ -0,0 +1,80 @@
+<?php
+
+/*
+ *  Controller to cancel a payment. Performs reversal or refund depending on payment status.
+ *
+ *  @link  https://docs.unzer.com/
+ *
+ */
+
+/** Require the constants of this example */
+require_once __DIR__ . '/../Constants.php';
+
+/** Require the composer autoloader file */
+/** @noinspection PhpIncludeInspection */
+require_once __DIR__ . '/../../../../autoload.php';
+
+use UnzerSDK\examples\ExampleDebugHandler;
+use UnzerSDK\Exceptions\UnzerApiException;
+use UnzerSDK\Resources\CustomerFactory;
+use UnzerSDK\Resources\TransactionTypes\Charge;
+use UnzerSDK\Unzer;
+
+session_start();
+
+$clientMessage = 'Something went wrong. Please try again later.';
+$merchantMessage = 'Something went wrong. Please try again later.';
+$debugHandler = new ExampleDebugHandler();
+
+function redirect($url, $merchantMessage = '', $clientMessage = '')
+{
+    $_SESSION['merchantMessage'] = $merchantMessage;
+    $_SESSION['clientMessage']   = $clientMessage;
+    header('Location: ' . $url);
+    die();
+}
+
+// You will need the id of the payment type created in the frontend (index.php)
+if (!isset($_POST['payment_id'])) {
+    redirect(FAILURE_URL, 'Resource id is missing!', $clientMessage);
+}
+$paymentId   = $_POST['payment_id'];
+$unzer = new Unzer(UNZER_PAPI_PRIVATE_KEY);
+$payment = $unzer->fetchPayment($paymentId);
+
+// Catch API errors, write the message to your log and show the ClientMessage to the client.
+try {
+    // Create an Unzer object using your private key and register a debug handler if you want to.
+    $unzer = new Unzer(UNZER_PAPI_PRIVATE_KEY);
+    $unzer->setDebugMode(true)->setDebugHandler($debugHandler);
+
+    if ($payment->isCompleted()) {
+        $transaction = $unzer->cancelChargedPayment($paymentId);
+        $_SESSION['additionalPaymentInformation'] = '<p>Refund was successful.</p>';
+    } else {
+        $transaction = $unzer->cancelAuthorizedPayment($paymentId);
+        $_SESSION['additionalPaymentInformation'] = '<p>Reversal was successful.</p>';
+    }
+
+    // You'll need to remember the paymentId for later in the ReturnController (in case of 3ds)
+    $_SESSION['ShortId'] = $transaction->getShortId();
+    unset($_SESSION['isAuthorizeTransaction']);
+
+    // Redirect to the failure page or to success depending on the state of the transaction
+    $redirect = !empty($transaction->getRedirectUrl());
+    if (!$redirect && $transaction->isSuccess()) {
+        redirect(BACKEND_URL);
+    } elseif ($redirect && $transaction->isPending()) {
+        redirect(BACKEND_FAILURE_URL, 'Transaction initiated by merchant should not redirect to 3ds Page. The customer needs to
+        do the 3ds authentication first for that payment type.');
+    }
+
+    // Check the result message of the transaction to find out what went wrong.
+    $merchantMessage = $transaction->getMessage()->getCustomer();
+} catch (UnzerApiException $e) {
+    $merchantMessage = $e->getMerchantMessage();
+    $clientMessage = $e->getClientMessage();
+} catch (RuntimeException $e) {
+    $merchantMessage = $e->getMessage();
+}
+redirect(BACKEND_FAILURE_URL, $merchantMessage, $clientMessage);
diff --git a/vendor/unzerdev/php-sdk/examples/Backend/ChargePaymentController.php b/vendor/unzerdev/php-sdk/examples/Backend/ChargePaymentController.php
new file mode 100644
index 0000000..c2727a3
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/examples/Backend/ChargePaymentController.php
@@ -0,0 +1,73 @@
+<?php
+
+/*
+ *  Controller for charge on payment (capture).
+ *
+ *  @link  https://docs.unzer.com/
+ *
+ */
+
+/** Require the constants of this example */
+require_once __DIR__ . '/../Constants.php';
+
+/** Require the composer autoloader file */
+/** @noinspection PhpIncludeInspection */
+require_once __DIR__ . '/../../../../autoload.php';
+
+use UnzerSDK\examples\ExampleDebugHandler;
+use UnzerSDK\Exceptions\UnzerApiException;
+use UnzerSDK\Resources\CustomerFactory;
+use UnzerSDK\Resources\TransactionTypes\Charge;
+use UnzerSDK\Unzer;
+
+session_start();
+
+$clientMessage = 'Something went wrong. Please try again later.';
+$merchantMessage = 'Something went wrong. Please try again later.';
+$debugHandler = new ExampleDebugHandler();
+
+function redirect($url, $merchantMessage = '', $clientMessage = '')
+{
+    $_SESSION['merchantMessage'] = $merchantMessage;
+    $_SESSION['clientMessage']   = $clientMessage;
+    header('Location: ' . $url);
+    die();
+}
+
+// You will need the id of the payment type created in the frontend (index.php)
+if (!isset($_POST['payment_id'])) {
+    redirect(FAILURE_URL, 'Resource id is missing!', $clientMessage);
+}
+$paymentId   = $_POST['payment_id'];
+
+// Catch API errors, write the message to your log and show the ClientMessage to the client.
+try {
+    // Create an Unzer object using your private key and register a debug handler if you want to.
+    $unzer = new Unzer(UNZER_PAPI_PRIVATE_KEY);
+    $unzer->setDebugMode(true)->setDebugHandler($debugHandler);
+
+    $transaction = $unzer->performChargeOnPayment($paymentId, new Charge());
+
+    // You'll need to remember the paymentId for later in the ReturnController (in case of 3ds)
+    $_SESSION['ShortId'] = $transaction->getShortId();
+    unset($_SESSION['isAuthorizeTransaction']);
+
+    // Redirect to the failure page or to success depending on the state of the transaction
+    $redirect = !empty($transaction->getRedirectUrl());
+    if (!$redirect && $transaction->isSuccess()) {
+        $_SESSION['additionalPaymentInformation'] = '<p>Charge was successful.</p>';
+        redirect(BACKEND_URL);
+    } elseif ($redirect && $transaction->isPending()) {
+        redirect(BACKEND_FAILURE_URL, 'Transaction initiated by merchant should not redirect to 3ds Page. The customer needs to
+        do the 3ds authentication first for that payment type.');
+    }
+
+    // Check the result message of the transaction to find out what went wrong.
+    $merchantMessage = $transaction->getMessage()->getCustomer();
+} catch (UnzerApiException $e) {
+    $merchantMessage = $e->getMerchantMessage();
+    $clientMessage = $e->getClientMessage();
+} catch (RuntimeException $e) {
+    $merchantMessage = $e->getMessage();
+}
+redirect(BACKEND_FAILURE_URL, $merchantMessage, $clientMessage);
diff --git a/vendor/unzerdev/php-sdk/examples/Backend/Failure.php b/vendor/unzerdev/php-sdk/examples/Backend/Failure.php
new file mode 100644
index 0000000..c28d75a
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/examples/Backend/Failure.php
@@ -0,0 +1,47 @@
+<?php
+/**
+ * This is the failure page for backend transactions.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+
+session_start();
+$isAuthorizeTransaction = $_SESSION['isAuthorizeTransaction'] ?? false;
+?>
+
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <title>Unzer UI Examples</title>
+    <script src="https://code.jquery.com/jquery-3.6.0.min.js"
+            integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4=" crossorigin="anonymous"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/semantic-ui/2.4.1/semantic.min.js"></script>
+    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/semantic-ui/2.4.1/semantic.min.css"/>
+</head>
+    <body style="margin: 70px 70px 0;">
+    <div class="ui container segment">
+        <h1 id="result">Failure</h1>
+        <p>
+            There has been an error performing the transaction
+            <?php
+            if (isset($_SESSION['merchantMessage']) && !empty($_SESSION['merchantMessage'])) {
+                echo '<p><strong>Merchant message (don\'t show this to the customer):</strong> ' . $_SESSION['merchantMessage'] . '</p>';
+            }
+            if (isset($_SESSION['clientMessage']) && !empty($_SESSION['clientMessage'])) {
+                echo '<p><strong>Client message (this is the error message for the customer):</strong> ' . $_SESSION['clientMessage'] . '</p>';
+            }
+            if (isset($_SESSION['ShortId']) && !empty($_SESSION['ShortId'])) {
+                echo '<p>Please look for ShortId ' . $_SESSION['ShortId'] . ' in Unzer Insights to see the transaction.</p>';
+            }
+            if (isset($_SESSION['PaymentId']) && !empty($_SESSION['PaymentId'])) {
+                echo '<p>The PaymentId of your transaction is \'' . $_SESSION['PaymentId'] . '\'.</p>';
+            }
+            echo '<p>Back to <a href="ManagePayment.php">Manage Payment</a> page.</p>';
+            ?>
+        </p>
+        <a href=".." class="ui green button">start again</a>
+    </div>
+    </body>
+</html>
diff --git a/vendor/unzerdev/php-sdk/examples/Backend/ManagePayment.php b/vendor/unzerdev/php-sdk/examples/Backend/ManagePayment.php
new file mode 100644
index 0000000..8dc5bfd
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/examples/Backend/ManagePayment.php
@@ -0,0 +1,106 @@
+<?php
+/**
+ * This is a Backend page where a merchant can perform charge and cancel transactions for the current payment. This is only available for "paylater-invoice" and "klarna" type right now.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+
+use UnzerSDK\Resources\PaymentTypes\Paypal;
+
+require_once __DIR__ . '/../../../../autoload.php';
+require_once __DIR__ . '/../Constants.php';
+
+session_start();
+
+$additionalPaymentInformation = $_SESSION['additionalPaymentInformation'] ?? null;
+$shortId = $_SESSION['ShortId'] ?? null;
+$paymentId = $_SESSION['PaymentId'] ?? null;
+$paymentTypeId = $_SESSION['PaymentTypeId'] ?? null;
+$isAuthorizeTransaction = $_SESSION['isAuthorizeTransaction'] ?? false;
+
+?>
+
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <title>Unzer UI Examples</title>
+    <script src="https://code.jquery.com/jquery-3.6.0.min.js"
+            integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4=" crossorigin="anonymous"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/semantic-ui/2.4.1/semantic.min.js"></script>
+    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/semantic-ui/2.4.1/semantic.min.css"/>
+
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/semantic-ui/2.4.1/semantic.min.js"></script>
+    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/semantic-ui/2.4.1/semantic.min.css"/>
+
+    <link rel="stylesheet" href="https://static.unzer.com/v1/unzer.css"/>
+</head>
+<body style="margin: 70px 70px 0;">
+<div class="ui container segment">
+    <h1 id="result" class="ui header">Manage Payment (Merchant only)</h1>
+    <div class="ui content">
+        <?php
+        if (!empty($additionalPaymentInformation)) {
+            echo '<h3>' . $additionalPaymentInformation . '</h3>';
+        }
+
+        $paymentId = $_SESSION['PaymentId'] ?? null;
+        if ($paymentId !== null) {
+            echo '<p>The PaymentId of your transaction is \'' . $paymentId . '\'.</p>';
+        }
+
+        $unzer = new \UnzerSDK\Unzer(UNZER_PAPI_PRIVATE_KEY);
+        $payment = $unzer->fetchPayment($paymentId);
+        if ($shortId !== null) {
+            $defaultTransactionMessage = '<p>Please look for ShortId ' . $shortId . ' in Unzer Insights to see the transaction.</p>';
+            $paylaterTransactionMessage = '<p>Please use the "descriptor" to look for the transaction in the Unzer Pay Later Merchant Portal.</p>';
+            echo preg_match('/[\d]{4}.[\d]{4}.[\d]{4}/', $shortId) ? $defaultTransactionMessage : $paylaterTransactionMessage;
+        }
+
+        if ($payment->getAmount()->getRemaining() > 0 && $payment->getAuthorization() !== null) {
+            echo '<h2>Charge payment</h2>
+                <p>You can use the payment ID to charge the payment.</p>
+                        <form id="payment-form" class="unzerUI form" action="' . CHARGE_PAYMENT_CONTROLLER_URL . '" method="post">
+                            <input type="hidden" name="payment_id" value="' . $paymentId . ' ">
+                            <div class="fields inline">
+                                <div class="field">
+                                    <button class="unzerUI primary button fluid" id="submit-button" type="submit">Capture payment</button>
+                                </div>
+                            </div>
+                        </form><br>';
+        }
+
+        if ($payment->getPaymentType()->supportsDirectPaymentCancel() && !$payment->isCanceled()) {
+            echo '<h2>Cancel payment.</h2>
+                        <p>You can use the payment ID to cancel the payment.</p>
+                        <form id="payment-form" class="unzerUI form" action="' . CANCEL_PAYMENT_CONTROLLER_URL . '" method="post">
+                            <input type="hidden" name="payment_id" value="' . $paymentId . ' ">
+                            <div class="fields inline">
+                                <div class="field">
+                                    <button class="unzerUI primary button fluid" id="submit-button" type="submit">Cancel payment</button>
+                                </div>
+                            </div>
+                        </form><br>';
+        }
+
+        if ($payment->getPaymentType() instanceof Paypal) {
+            echo '<h2>PayPal Express only: Finalize a transaction</h2>
+                        <p>You can finalize a transaction in resumed state.</p>
+                        <form id="payment-form" class="unzerUI form" action="' . UPDATE_TRANSACTION_CONTROLLER_URL . '" method="post">
+                            <input type="hidden" name="payment_id" value="' . $paymentId . ' ">
+                            <label for="shiipping_amount">Shipping amount: </label>
+                            <input type="number" name="shipping_amount" value="0" step="any">
+                            <div class="fields inline">
+                                <div class="field">
+                                    <button class="unzerUI primary button fluid" id="submit-button" type="submit">Finalize Transaction</button>
+                                </div>
+                            </div>
+                        </form><br>';
+        }
+
+        ?>
+        <a href=".." class="ui green button">start again</a>
+</div>
+</body>
+</html>
diff --git a/vendor/unzerdev/php-sdk/examples/Backend/UpdateTransactionController.php b/vendor/unzerdev/php-sdk/examples/Backend/UpdateTransactionController.php
new file mode 100644
index 0000000..ace3b9f
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/examples/Backend/UpdateTransactionController.php
@@ -0,0 +1,105 @@
+<?php
+
+/*
+ *  Controller for charge on payment (capture).
+ *
+ *  @link  https://docs.unzer.com/
+ *
+ */
+
+/** Require the constants of this example */
+require_once __DIR__ . '/../Constants.php';
+
+/** Require the composer autoloader file */
+/** @noinspection PhpIncludeInspection */
+require_once __DIR__ . '/../../../../autoload.php';
+
+use UnzerSDK\examples\ExampleDebugHandler;
+use UnzerSDK\Exceptions\UnzerApiException;
+use UnzerSDK\Resources\CustomerFactory;
+use UnzerSDK\Resources\EmbeddedResources\BasketItem;
+use UnzerSDK\Resources\TransactionTypes\Authorization;
+use UnzerSDK\Resources\TransactionTypes\Charge;
+use UnzerSDK\Unzer;
+
+session_start();
+
+$clientMessage = 'Something went wrong. Please try again later.';
+$merchantMessage = 'Something went wrong. Please try again later.';
+$debugHandler = new ExampleDebugHandler();
+
+function redirect($url, $merchantMessage = '', $clientMessage = '')
+{
+    $_SESSION['merchantMessage'] = $merchantMessage;
+    $_SESSION['clientMessage']   = $clientMessage;
+    header('Location: ' . $url);
+    die();
+}
+
+// You will need the id of the payment type created in the frontend (index.php)
+if (!isset($_POST['payment_id'])) {
+    redirect(FAILURE_URL, 'Resource id is missing!', $clientMessage);
+}
+$paymentId   = $_POST['payment_id'];
+$shippingCost   = $_POST['shipping_amount'];
+
+// Catch API errors, write the message to your log and show the ClientMessage to the client.
+try {
+    // Create an Unzer object using your private key and register a debug handler if you want to.
+    $unzer = new Unzer(UNZER_PAPI_PRIVATE_KEY);
+    $unzer->setDebugMode(true)->setDebugHandler($debugHandler);
+
+    $payment = $unzer->fetchPayment($paymentId);
+    $transaction = $payment->getInitialTransaction();
+
+    if (!$transaction->isResumed()) {
+        redirect(BACKEND_FAILURE_URL, 'Transaction can only be updated in resumed state.');
+    }
+
+    //Add Shipping cost to initial amount.
+    $updatedCost = $transaction->getAmount() + $shippingCost;
+
+    // Update transaction amount.
+    $transaction->setAmount($updatedCost);
+
+    //Update basket
+    $basket = $payment->getBasket();
+
+    if ($basket !== null && $shippingCost > 0) {
+        $shippingItem = new BasketItem('shipping costs');
+        $shippingItem->setAmountPerUnitGross($shippingCost);
+        $basket->addBasketItem($shippingItem);
+        $basket->setTotalValueGross($updatedCost);
+        $unzer->updateBasket($basket);
+    }
+
+    if ($transaction instanceof Authorization) {
+        $unzer->updateAuthorization($transaction->getPaymentId(), $transaction);
+    } else {
+        /** @var $transaction Charge */
+        $unzer->updateCharge($transaction->getPaymentId(), $transaction);
+    }
+
+    // You'll need to remember the paymentId for later in the ReturnController (in case of 3ds)
+    $_SESSION['ShortId'] = $transaction->getShortId();
+    unset($_SESSION['isAuthorizeTransaction']);
+
+    // Redirect to the failure page or to success depending on the state of the transaction
+    $redirect = !empty($transaction->getRedirectUrl());
+    if (!$redirect && $transaction->isSuccess()) {
+        $_SESSION['additionalPaymentInformation'] = '<p>Updating(PATCH) transaction was successful.</p>';
+        redirect(BACKEND_URL);
+    } elseif ($redirect && $transaction->isPending()) {
+        redirect(BACKEND_FAILURE_URL, 'Transaction initiated by merchant should not redirect to 3ds Page. The customer needs to
+        do the 3ds authentication first for that payment type.');
+    }
+
+    // Check the result message of the transaction to find out what went wrong.
+    $merchantMessage = $transaction->getMessage()->getCustomer();
+} catch (UnzerApiException $e) {
+    $merchantMessage = $e->getMerchantMessage();
+    $clientMessage = $e->getClientMessage();
+} catch (RuntimeException $e) {
+    $merchantMessage = $e->getMessage();
+}
+redirect(BACKEND_FAILURE_URL, $merchantMessage, $clientMessage);
diff --git a/vendor/unzerdev/php-sdk/examples/Bancontact/Constants.php b/vendor/unzerdev/php-sdk/examples/Bancontact/Constants.php
index bf67aa5..c8bfd87 100644
--- a/vendor/unzerdev/php-sdk/examples/Bancontact/Constants.php
+++ b/vendor/unzerdev/php-sdk/examples/Bancontact/Constants.php
@@ -2,25 +2,8 @@
 /**
  * This file defines the constants needed for the Bancontact example.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  David Owusu <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 require_once __DIR__ . '/../Constants.php';
diff --git a/vendor/unzerdev/php-sdk/examples/Bancontact/Controller.php b/vendor/unzerdev/php-sdk/examples/Bancontact/Controller.php
index af503dd..0b17f73 100644
--- a/vendor/unzerdev/php-sdk/examples/Bancontact/Controller.php
+++ b/vendor/unzerdev/php-sdk/examples/Bancontact/Controller.php
@@ -3,25 +3,8 @@
  * This is the controller for the Bancontact example.
  * It is called when the pay button on the index page is clicked.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  David Owusu <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
diff --git a/vendor/unzerdev/php-sdk/examples/Bancontact/index.php b/vendor/unzerdev/php-sdk/examples/Bancontact/index.php
index adaef60..28700ce 100644
--- a/vendor/unzerdev/php-sdk/examples/Bancontact/index.php
+++ b/vendor/unzerdev/php-sdk/examples/Bancontact/index.php
@@ -2,25 +2,8 @@
 /**
  * This file provides an example implementation of the Bancontact payment type.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  David Owusu <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
@@ -36,8 +19,9 @@
 <head>
     <meta charset="UTF-8">
     <title>Unzer UI Examples</title>
-    <script src="https://code.jquery.com/jquery-3.5.1.min.js"
-            integrity="sha256-9/aliU8dGd2tb6OSsuzixeV4y/faTqgFtohetphbbj0=" crossorigin="anonymous"></script>
+    <script src="https://code.jquery.com/jquery-3.6.0.min.js"
+            integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4="
+            crossorigin="anonymous"></script>
 
     <link rel="stylesheet" href="https://static.unzer.com/v1/unzer.css" />
     <script type="text/javascript" src="https://static.unzer.com/v1/unzer.js"></script>
@@ -52,7 +36,9 @@
         <!-- The Holder field UI Element will be inserted here -->
     </div>
     <div class="field" id="error-holder" style="color: #9f3a38"> </div>
-    <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    <div class="field">
+        <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    </div>
 </form>
 
 <script>
diff --git a/vendor/unzerdev/php-sdk/examples/BankTransfer/Constants.php b/vendor/unzerdev/php-sdk/examples/BankTransfer/Constants.php
index 5b6f92d..92b31bb 100644
--- a/vendor/unzerdev/php-sdk/examples/BankTransfer/Constants.php
+++ b/vendor/unzerdev/php-sdk/examples/BankTransfer/Constants.php
@@ -2,25 +2,8 @@
 /**
  * This file defines the constants needed for the Unzer Bank Transfer example.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 require_once __DIR__ . '/../Constants.php';
diff --git a/vendor/unzerdev/php-sdk/examples/BankTransfer/Controller.php b/vendor/unzerdev/php-sdk/examples/BankTransfer/Controller.php
index 6c8ec9d..78c6077 100644
--- a/vendor/unzerdev/php-sdk/examples/BankTransfer/Controller.php
+++ b/vendor/unzerdev/php-sdk/examples/BankTransfer/Controller.php
@@ -3,25 +3,8 @@
  * This is the controller for the Unzer Bank Transfer example.
  * It is called when the pay button on the index page is clicked.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
diff --git a/vendor/unzerdev/php-sdk/examples/BankTransfer/index.php b/vendor/unzerdev/php-sdk/examples/BankTransfer/index.php
index fe927b5..5d173b4 100644
--- a/vendor/unzerdev/php-sdk/examples/BankTransfer/index.php
+++ b/vendor/unzerdev/php-sdk/examples/BankTransfer/index.php
@@ -2,25 +2,8 @@
 /**
  * This file provides an example implementation of the Unzer Bank Transfer payment type.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
@@ -36,8 +19,9 @@
 <head>
     <meta charset="UTF-8">
     <title>Unzer UI Examples</title>
-    <script src="https://code.jquery.com/jquery-3.5.1.min.js"
-            integrity="sha256-9/aliU8dGd2tb6OSsuzixeV4y/faTqgFtohetphbbj0=" crossorigin="anonymous"></script>
+    <script src="https://code.jquery.com/jquery-3.6.0.min.js"
+            integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4="
+            crossorigin="anonymous"></script>
 
     <link rel="stylesheet" href="https://static.unzer.com/v1/unzer.css" />
     <script type="text/javascript" src="https://static.unzer.com/v1/unzer.js"></script>
@@ -49,7 +33,9 @@
 
 <form id="payment-form" class="unzerUI form" novalidate>
     <div class="field" id="error-holder" style="color: #9f3a38"> </div>
-    <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    <div class="field">
+        <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    </div>
 </form>
 
 <script>
diff --git a/vendor/unzerdev/php-sdk/examples/Card/Constants.php b/vendor/unzerdev/php-sdk/examples/Card/Constants.php
index d02c05c..f499e1c 100644
--- a/vendor/unzerdev/php-sdk/examples/Card/Constants.php
+++ b/vendor/unzerdev/php-sdk/examples/Card/Constants.php
@@ -2,25 +2,8 @@
 /**
  * This file defines the constants needed for the card example.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 require_once __DIR__ . '/../Constants.php';
diff --git a/vendor/unzerdev/php-sdk/examples/Card/Controller.php b/vendor/unzerdev/php-sdk/examples/Card/Controller.php
index 60f7966..2baacea 100644
--- a/vendor/unzerdev/php-sdk/examples/Card/Controller.php
+++ b/vendor/unzerdev/php-sdk/examples/Card/Controller.php
@@ -3,25 +3,8 @@
  * This is the controller for the Card example.
  * It is called when the pay button on the index page is clicked.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
diff --git a/vendor/unzerdev/php-sdk/examples/Card/index.php b/vendor/unzerdev/php-sdk/examples/Card/index.php
index 644bf09..87cb6c0 100644
--- a/vendor/unzerdev/php-sdk/examples/Card/index.php
+++ b/vendor/unzerdev/php-sdk/examples/Card/index.php
@@ -2,25 +2,8 @@
 /**
  * This file provides an example implementation of the Card payment type.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
@@ -36,8 +19,9 @@
 <head>
     <meta charset="UTF-8">
     <title>Unzer UI Examples</title>
-    <script src="https://code.jquery.com/jquery-3.5.1.min.js"
-            integrity="sha256-9/aliU8dGd2tb6OSsuzixeV4y/faTqgFtohetphbbj0=" crossorigin="anonymous"></script>
+    <script src="https://code.jquery.com/jquery-3.6.0.min.js"
+            integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4="
+            crossorigin="anonymous"></script>
 
     <link rel="stylesheet" href="https://static.unzer.com/v1/unzer.css" />
     <script type="text/javascript" src="https://static.unzer.com/v1/unzer.js"></script>
@@ -114,8 +98,10 @@
             </div>
         </div>
     </div>
-    <div class="field" id="error-holder" style="color: #9f3a38"> </div>
-    <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    <div class="field" id="error-holder" style="color: #9f3a38"></div>
+    <div class="field">
+        <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    </div>
 </form>
 
 <script>
diff --git a/vendor/unzerdev/php-sdk/examples/CardExtended/Constants.php b/vendor/unzerdev/php-sdk/examples/CardExtended/Constants.php
index fc0ac78..cd7efd8 100644
--- a/vendor/unzerdev/php-sdk/examples/CardExtended/Constants.php
+++ b/vendor/unzerdev/php-sdk/examples/CardExtended/Constants.php
@@ -2,25 +2,8 @@
 /**
  * This file defines the constants needed for the card extended example.
  *
- * Copyright (C) 2021 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 require_once __DIR__ . '/../Constants.php';
diff --git a/vendor/unzerdev/php-sdk/examples/CardExtended/Controller.php b/vendor/unzerdev/php-sdk/examples/CardExtended/Controller.php
index ecc1852..5295785 100644
--- a/vendor/unzerdev/php-sdk/examples/CardExtended/Controller.php
+++ b/vendor/unzerdev/php-sdk/examples/CardExtended/Controller.php
@@ -3,25 +3,8 @@
  * This is the controller for the Card extended example.
  * It is called when the pay button on the index page is clicked.
  *
- * Copyright (C) 2021 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
diff --git a/vendor/unzerdev/php-sdk/examples/CardExtended/index.php b/vendor/unzerdev/php-sdk/examples/CardExtended/index.php
index c057c30..cbd1ada 100644
--- a/vendor/unzerdev/php-sdk/examples/CardExtended/index.php
+++ b/vendor/unzerdev/php-sdk/examples/CardExtended/index.php
@@ -2,25 +2,8 @@
 /**
  * This file provides an example implementation of the Card payment type.
  *
- * Copyright (C) 2021 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
@@ -36,8 +19,9 @@
 <head>
     <meta charset="UTF-8">
     <title>Unzer UI Examples</title>
-    <script src="https://code.jquery.com/jquery-3.5.1.min.js"
-            integrity="sha256-9/aliU8dGd2tb6OSsuzixeV4y/faTqgFtohetphbbj0=" crossorigin="anonymous"></script>
+    <script src="https://code.jquery.com/jquery-3.6.0.min.js"
+            integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4="
+            crossorigin="anonymous"></script>
 
     <link rel="stylesheet" href="https://static.unzer.com/v1/unzer.css" />
     <script type="text/javascript" src="https://static.unzer.com/v1/unzer.js"></script>
@@ -116,7 +100,9 @@
         </div>
     </div>
     <div class="field" id="error-holder" style="color: #9f3a38"> </div>
-    <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    <div class="field">
+        <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    </div>
 </form>
 
 <script>
@@ -149,9 +135,10 @@
     // General event handling
     let formFieldValid = {};
     let payButton = document.getElementById("submit-button");
+
     let $errorHolder = $('#error-holder');
 
-    // Enable pay button initially
+    // Disable pay button initially
     payButton.disabled = true;
 
     let eventHandlerCardInput = function(e) {
diff --git a/vendor/unzerdev/php-sdk/examples/CardRecurring/Constants.php b/vendor/unzerdev/php-sdk/examples/CardRecurring/Constants.php
index 53393dd..94e4999 100644
--- a/vendor/unzerdev/php-sdk/examples/CardRecurring/Constants.php
+++ b/vendor/unzerdev/php-sdk/examples/CardRecurring/Constants.php
@@ -2,25 +2,8 @@
 /**
  * This file defines the constants needed for the Card recurring example.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 require_once __DIR__ . '/../Constants.php';
diff --git a/vendor/unzerdev/php-sdk/examples/CardRecurring/Controller.php b/vendor/unzerdev/php-sdk/examples/CardRecurring/Controller.php
index 8e26a30..2e8fbff 100644
--- a/vendor/unzerdev/php-sdk/examples/CardRecurring/Controller.php
+++ b/vendor/unzerdev/php-sdk/examples/CardRecurring/Controller.php
@@ -3,25 +3,8 @@
  * This is the controller for the Card recurring example.
  * It is called when the pay button on the index page is clicked.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
@@ -34,6 +17,7 @@
 use UnzerSDK\Constants\RecurrenceTypes;
 use UnzerSDK\examples\ExampleDebugHandler;
 use UnzerSDK\Exceptions\UnzerApiException;
+use UnzerSDK\Resources\TransactionTypes\Charge;
 use UnzerSDK\Unzer;
 
 session_start();
@@ -57,31 +41,35 @@ function redirect($url, $merchantMessage = '', $clientMessage = '')
 $paymentTypeId   = $_POST['resourceId'];
 
 // Just for this example: Use selected recurrence type. Scheduled will be used as default.
-$recurrenceTyp = $_POST['recurrence_type'] ?? RecurrenceTypes::SCHEDULED;
+$recurrenceType = $_POST['recurrence_type'] ?? RecurrenceTypes::SCHEDULED;
 
 // Catch API errors, write the message to your log and show the ClientMessage to the client.
 try {
     // Create an Unzer object using your private key and register a debug handler if you want to.
     $unzer = new Unzer(UNZER_PAPI_PRIVATE_KEY);
     $unzer->setDebugMode(true)->setDebugHandler(new ExampleDebugHandler());
+    $paymentType = $unzer->fetchPaymentType($paymentTypeId);
+
+    $charge = (new Charge(12.99, 'EUR', MY_RETURN_CONTROLLER_URL))
+        ->setRecurrenceType($recurrenceType, $paymentType);
 
-    $recurring = $unzer->activateRecurringPayment($paymentTypeId, MY_RETURN_CONTROLLER_URL, $recurrenceTyp);
+    $transaction = $unzer->performCharge($charge, $paymentTypeId);
 
     // You'll need to remember the paymentId for later in the ReturnController (in case of 3ds)
     $_SESSION['PaymentTypeId'] = $paymentTypeId;
-    $_SESSION['ShortId'] = $recurring->getShortId();
-    $_SESSION['recurrenceType'] = $recurring->getRecurrenceType();
+    $_SESSION['ShortId'] = $transaction->getShortId();
+    $_SESSION['recurrenceType'] = $transaction->getRecurrenceType();
 
     // Redirect to the 3ds page or to success depending on the state of the transaction
-    $redirect = !empty($recurring->getRedirectUrl());
-    if (!$redirect && $recurring->isSuccess()) {
+    $redirect = !empty($transaction->getRedirectUrl());
+    if (!$redirect && $transaction->isSuccess()) {
         redirect(SUCCESS_URL);
-    } elseif ($redirect && $recurring->isPending()) {
-        redirect($recurring->getRedirectUrl());
+    } elseif ($redirect && $transaction->isPending()) {
+        redirect($transaction->getRedirectUrl());
     }
 
     // Check the result message of the transaction to find out what went wrong.
-    $merchantMessage = $recurring->getMessage()->getCustomer();
+    $merchantMessage = $transaction->getMessage()->getCustomer();
 } catch (UnzerApiException $e) {
     $merchantMessage = $e->getMerchantMessage();
     $clientMessage = $e->getClientMessage();
diff --git a/vendor/unzerdev/php-sdk/examples/CardRecurring/RecurringPaymentController.php b/vendor/unzerdev/php-sdk/examples/CardRecurring/RecurringPaymentController.php
index 46d73ec..b4d14bc 100644
--- a/vendor/unzerdev/php-sdk/examples/CardRecurring/RecurringPaymentController.php
+++ b/vendor/unzerdev/php-sdk/examples/CardRecurring/RecurringPaymentController.php
@@ -3,26 +3,8 @@
 /*
  *  Controller for subsequent transactions.
  *
- *  Copyright (C) 2021 - today Unzer E-Com GmbH
- *
- *  Licensed under the Apache License, Version 2.0 (the "License");
- *  you may not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS,
- *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- *
  *  @link  https://docs.unzer.com/
  *
- *  @author  David Owusu <development@unzer.com>
- *
- *  @package  UnzerSDK
- *
  */
 
 /** Require the constants of this example */
diff --git a/vendor/unzerdev/php-sdk/examples/CardRecurring/ReturnController.php b/vendor/unzerdev/php-sdk/examples/CardRecurring/ReturnController.php
index a9081b3..6e7e014 100644
--- a/vendor/unzerdev/php-sdk/examples/CardRecurring/ReturnController.php
+++ b/vendor/unzerdev/php-sdk/examples/CardRecurring/ReturnController.php
@@ -3,25 +3,8 @@
  * This is the return controller for the Card recurring example.
  * It is called when the client is redirected back to the shop from the external page.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
diff --git a/vendor/unzerdev/php-sdk/examples/CardRecurring/index.php b/vendor/unzerdev/php-sdk/examples/CardRecurring/index.php
index 11eb9bc..1bc34ef 100644
--- a/vendor/unzerdev/php-sdk/examples/CardRecurring/index.php
+++ b/vendor/unzerdev/php-sdk/examples/CardRecurring/index.php
@@ -2,25 +2,8 @@
 /**
  * This file provides an example implementation of the Card recurring payment type.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
@@ -36,8 +19,9 @@
 <head>
     <meta charset="UTF-8">
     <title>Unzer UI Examples</title>
-    <script src="https://code.jquery.com/jquery-3.5.1.min.js"
-            integrity="sha256-9/aliU8dGd2tb6OSsuzixeV4y/faTqgFtohetphbbj0=" crossorigin="anonymous"></script>
+    <script src="https://code.jquery.com/jquery-3.6.0.min.js"
+            integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4="
+            crossorigin="anonymous"></script>
 
     <link rel="stylesheet" href="https://static.unzer.com/v1/unzer.css" />
     <script type="text/javascript" src="https://static.unzer.com/v1/unzer.js"></script>
@@ -102,7 +86,9 @@
         <!-- Card number UI Element will be inserted here. -->
     </div>
     <div class="field" id="error-holder" style="color: #9f3a38"> </div>
-    <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    <div class="field">
+        <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    </div>
 </form>
 
 <script>
diff --git a/vendor/unzerdev/php-sdk/examples/Constants.php b/vendor/unzerdev/php-sdk/examples/Constants.php
index b4a4fb3..be2f01a 100644
--- a/vendor/unzerdev/php-sdk/examples/Constants.php
+++ b/vendor/unzerdev/php-sdk/examples/Constants.php
@@ -2,25 +2,8 @@
 /**
  * This file defines the constants needed for the card example.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 require_once __DIR__ . '/_enableExamples.php';
@@ -30,7 +13,13 @@
 
 const EXAMPLE_BASE_FOLDER = UNZER_PAPI_URL . UNZER_PAPI_FOLDER;
 define('SUCCESS_URL', EXAMPLE_BASE_FOLDER . 'Success.php');
+define('CREATE_URL', EXAMPLE_BASE_FOLDER . 'Create.php');
 define('PENDING_URL', EXAMPLE_BASE_FOLDER . 'Pending.php');
 define('FAILURE_URL', EXAMPLE_BASE_FOLDER . 'Failure.php');
 define('RETURN_CONTROLLER_URL', EXAMPLE_BASE_FOLDER . 'ReturnController.php');
+define('BACKEND_URL', EXAMPLE_BASE_FOLDER . 'Backend/ManagePayment.php');
+define('BACKEND_FAILURE_URL', EXAMPLE_BASE_FOLDER . 'Backend/Failure.php');
 define('RECURRING_PAYMENT_CONTROLLER_URL', EXAMPLE_BASE_FOLDER . 'CardRecurring/RecurringPaymentController.php');
+define('CHARGE_PAYMENT_CONTROLLER_URL', EXAMPLE_BASE_FOLDER . 'Backend/ChargePaymentController.php');
+define('CANCEL_PAYMENT_CONTROLLER_URL', EXAMPLE_BASE_FOLDER . 'Backend/CancelPaymentController.php');
+define('UPDATE_TRANSACTION_CONTROLLER_URL', EXAMPLE_BASE_FOLDER . 'Backend/UpdateTransactionController.php');
diff --git a/vendor/unzerdev/php-sdk/examples/Create.php b/vendor/unzerdev/php-sdk/examples/Create.php
new file mode 100644
index 0000000..7562c4a
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/examples/Create.php
@@ -0,0 +1,68 @@
+<?php
+/**
+ * This is the success page for the example payments.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+
+require_once __DIR__ . '/Constants.php';
+
+session_start();
+
+$additionalPaymentInformation = $_SESSION['additionalPaymentInformation'] ?? null;
+$shortId = $_SESSION['ShortId'] ?? null;
+$paymentId = $_SESSION['PaymentId'] ?? null;
+$paymentTypeId = $_SESSION['PaymentTypeId'] ?? null;
+$isAuthorizeTransaction = $_SESSION['isAuthorizeTransaction'] ?? false;
+
+?>
+
+<!DOCTYPE html>
+<html lang="en">
+    <head>
+        <meta charset="UTF-8">
+        <title>Unzer UI Examples</title>
+
+        <link rel="stylesheet" href="https://static.unzer.com/v1/unzer.css" />
+    </head>
+    <body>
+        <h1 id="result">Create</h1>
+        <p>
+            The payment is in create state, meaning the Payment page was not used for a payment yet.<br>
+            The payment also stays in this state when the customer clicked the "Back to merchant" button or closed the browser tab.<br>
+            It is still active and could be used by the customer for the current payment.<br>
+        <?php
+        echo  'Paypage-URL: <a href="' . $_SESSION['paypageId'] . '">Payment page</a>';
+
+        if (!empty($additionalPaymentInformation)) {
+            echo $additionalPaymentInformation;
+        }
+
+        if ($shortId !== null) {
+            $defaultTransactionMessage = '<p>Please look for ShortId ' . $shortId . ' in Unzer Insights to see the transaction.</p>';
+            $paylaterTransactionMessage = '<p>Please use the "descriptor" to look for the transaction in the Unzer Pay Later Merchant Portal.</p>';
+            echo preg_match('/[\d]{4}.[\d]{4}.[\d]{4}/', $shortId) ? $defaultTransactionMessage : $paylaterTransactionMessage;
+        }
+        $paymentId = $_SESSION['PaymentId'] ?? null;
+        if ($paymentId !== null) {
+            echo '<p>The PaymentId is \'' . $paymentId . '\'.</p>';
+        }
+
+        if ($paymentTypeId !== null) {
+                echo    '<p>The TypeId for the recurring payment is \'' . $paymentTypeId . '\'. You can use it
+                            now for subsequent transactions.</p>
+                            <form id="payment-form" class="unzerUI form" action="' . RECURRING_PAYMENT_CONTROLLER_URL . '" method="post">
+                                <input type="hidden" name="payment_type_id" value="' . $paymentTypeId . ' ">
+                                <div class="fields inline">
+                                    <div class="field">
+                                        <button class="unzerUI primary button fluid" id="submit-button" type="submit">Charge payment type again.</button>
+                                    </div>
+                                </div>
+                            </form>';
+            }
+        ?>
+        </p>
+        <p><a href=".">start again</a></p>
+    </body>
+</html>
diff --git a/vendor/unzerdev/php-sdk/examples/EPSCharge/Constants.php b/vendor/unzerdev/php-sdk/examples/EPSCharge/Constants.php
index 08eb1cc..660fe96 100644
--- a/vendor/unzerdev/php-sdk/examples/EPSCharge/Constants.php
+++ b/vendor/unzerdev/php-sdk/examples/EPSCharge/Constants.php
@@ -2,25 +2,8 @@
 /**
  * This file defines the constants needed for the card example.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 require_once __DIR__ . '/../Constants.php';
diff --git a/vendor/unzerdev/php-sdk/examples/EPSCharge/Controller.php b/vendor/unzerdev/php-sdk/examples/EPSCharge/Controller.php
index 5d6e10f..0e3806c 100644
--- a/vendor/unzerdev/php-sdk/examples/EPSCharge/Controller.php
+++ b/vendor/unzerdev/php-sdk/examples/EPSCharge/Controller.php
@@ -3,25 +3,8 @@
  * This is the controller for the EPS example.
  * It is called when the pay button on the index page is clicked.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
diff --git a/vendor/unzerdev/php-sdk/examples/EPSCharge/index.php b/vendor/unzerdev/php-sdk/examples/EPSCharge/index.php
index 5639988..b2edc44 100644
--- a/vendor/unzerdev/php-sdk/examples/EPSCharge/index.php
+++ b/vendor/unzerdev/php-sdk/examples/EPSCharge/index.php
@@ -2,25 +2,8 @@
 /**
  * This file provides an example implementation of the EPS payment type.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
@@ -36,8 +19,9 @@
 <head>
     <meta charset="UTF-8">
     <title>Unzer UI Examples</title>
-    <script src="https://code.jquery.com/jquery-3.5.1.min.js"
-            integrity="sha256-9/aliU8dGd2tb6OSsuzixeV4y/faTqgFtohetphbbj0=" crossorigin="anonymous"></script>
+    <script src="https://code.jquery.com/jquery-3.6.0.min.js"
+            integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4="
+            crossorigin="anonymous"></script>
 
     <link rel="stylesheet" href="https://static.unzer.com/v1/unzer.css" />
     <script type="text/javascript" src="https://static.unzer.com/v1/unzer.js"></script>
@@ -50,7 +34,9 @@
 <form id="payment-form" class="unzerUI form" novalidate>
     <div id="example-eps" class="field"></div>
     <div class="field" id="error-holder" style="color: #9f3a38"> </div>
-    <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    <div class="field">
+        <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    </div>
 </form>
 
 <script>
@@ -63,6 +49,17 @@
         containerId: 'example-eps'
     });
 
+    let payButton = document.getElementById("submit-button");
+    payButton.disabled = true;
+
+    EPS.addEventListener('change', function eventHandlerResource(e) {
+        if (e.value) {
+            $("#submit-button").removeAttr('disabled');
+        } else {
+            $("#submit-button").attr('disabled', 'disabled');
+        }
+    })
+
     // Handling payment form submission
     let form = document.getElementById('payment-form');
     form.addEventListener('submit', function(event) {
diff --git a/vendor/unzerdev/php-sdk/examples/EmbeddedPayPage/Constants.php b/vendor/unzerdev/php-sdk/examples/EmbeddedPayPage/Constants.php
index 2803607..db6d5d5 100644
--- a/vendor/unzerdev/php-sdk/examples/EmbeddedPayPage/Constants.php
+++ b/vendor/unzerdev/php-sdk/examples/EmbeddedPayPage/Constants.php
@@ -2,25 +2,8 @@
 /**
  * This file defines the constants needed for the  Embedded Payment Page example.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 require_once __DIR__ . '/../Constants.php';
diff --git a/vendor/unzerdev/php-sdk/examples/EmbeddedPayPage/Controller.php b/vendor/unzerdev/php-sdk/examples/EmbeddedPayPage/Controller.php
index dc7c9a0..d8f34f3 100644
--- a/vendor/unzerdev/php-sdk/examples/EmbeddedPayPage/Controller.php
+++ b/vendor/unzerdev/php-sdk/examples/EmbeddedPayPage/Controller.php
@@ -3,25 +3,8 @@
  * This is the controller for the  Embedded Payment Page example.
  * It is called when the pay button on the index page is clicked.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
@@ -31,15 +14,17 @@
 /** Require the composer autoloader file */
 require_once __DIR__ . '/../../../../autoload.php';
 
+use UnzerSDK\Constants\CustomerGroups;
+use UnzerSDK\Constants\CustomerRegistrationLevel;
 use UnzerSDK\Constants\Salutations;
 use UnzerSDK\examples\ExampleDebugHandler;
 use UnzerSDK\Exceptions\UnzerApiException;
-use UnzerSDK\Resources\EmbeddedResources\Address;
-use UnzerSDK\Unzer;
 use UnzerSDK\Resources\Basket;
 use UnzerSDK\Resources\CustomerFactory;
+use UnzerSDK\Resources\EmbeddedResources\Address;
 use UnzerSDK\Resources\EmbeddedResources\BasketItem;
 use UnzerSDK\Resources\PaymentTypes\Paypage;
+use UnzerSDK\Unzer;
 
 // start new session for this example and remove all parameters
 session_start();
@@ -60,7 +45,7 @@
     $unzer->setDebugMode(true)->setDebugHandler(new ExampleDebugHandler());
 
     // A customer with matching addresses is mandatory for Installment payment type
-    $address  = (new Address())
+    $address = (new Address())
         ->setName('Max Mustermann')
         ->setStreet('Vangerowstr. 18')
         ->setCity('Heidelberg')
@@ -71,27 +56,46 @@
     $customer = CustomerFactory::createCustomer('Max', 'Mustermann')
         ->setSalutation(Salutations::MR)
         ->setBirthDate('2000-02-12')
+        ->setLanguage('de')
         ->setEmail('test@test.com');
 
     // These are the mandatory parameters for the payment page ...
     $paypage = new Paypage(119.00, 'EUR', RETURN_CONTROLLER_URL);
     $orderId = 'o' . str_replace(['0.', ' '], '', microtime(false));
 
+    // Just for example purpose. Make sure to generate a unique ID.
+    $threatMetrixId = 'php-sdk-example_' . $orderId;
+
     // ... however you can customize the Payment Page using additional parameters.
-    $paypage->setLogoImage('https://dev.unzer.com/wp-content/uploads/2020/09/Unzer__PrimaryLogo_Raspberry_RGB.png')
-            ->setShopName('My Test Shop')
-            ->setTagline('Try and stop us from being awesome!')
-            ->setOrderId($orderId)
-            ->setInvoiceId('i' . microtime(true));
+    $paypage->setShopName('My Test Shop')
+        ->setTagline('Try and stop us from being awesome!')
+        ->setTermsAndConditionUrl('https://www.unzer.com/en/')
+        ->setPrivacyPolicyUrl('https://www.unzer.com/de/datenschutz/')
+        ->setOrderId($orderId)
+        ->setLogoImage(UNZER_PP_LOGO_URL)
+        ->setAdditionalAttribute('riskData.threatMetrixId', $threatMetrixId)
+        ->setAdditionalAttribute('riskData.customerGroup', CustomerGroups::GOOD)
+        ->setAdditionalAttribute('riskData.confirmedAmount', 99.99)
+        ->setAdditionalAttribute('riskData.confirmedOrders', 2)
+        ->setAdditionalAttribute('riskData.registrationLevel', CustomerRegistrationLevel::REGISTERED)
+        ->setAdditionalAttribute('riskData.registrationDate	', '20160412')
+        ->setInvoiceId('i' . microtime(true));
 
     // ... in order to enable Unzer Instalment you will need to set the effectiveInterestRate as well.
     $paypage->setEffectiveInterestRate(4.99);
 
     // ... a Basket is mandatory for InstallmentSecured
-    $basketItem = (new BasketItem('Hat', 100.00, 119.00, 1))
-        ->setAmountGross(119.0)
-        ->setAmountVat(19.0);
-    $basket = new Basket($orderId, 119.0, 'EUR', [$basketItem]);
+    $basketItem = (new BasketItem())
+        ->setAmountPerUnitGross(119.00)
+        ->setVat(19.00)
+        ->setQuantity(1)
+        ->setBasketItemReferenceId('item1')
+        ->setTitle('Hat');
+
+    $basket = new Basket($orderId);
+    $basket->setTotalValueGross(119.00)
+        ->addBasketItem($basketItem)
+        ->setCurrencyCode('EUR');
 
     if ($transactionType === 'charge') {
         $unzer->initPayPageCharge($paypage, $customer, $basket);
diff --git a/vendor/unzerdev/php-sdk/examples/EmbeddedPayPage/index.php b/vendor/unzerdev/php-sdk/examples/EmbeddedPayPage/index.php
index eec9b94..0fa9ab3 100644
--- a/vendor/unzerdev/php-sdk/examples/EmbeddedPayPage/index.php
+++ b/vendor/unzerdev/php-sdk/examples/EmbeddedPayPage/index.php
@@ -2,25 +2,8 @@
 /**
  * This file provides an example implementation of the  Embedded Payment Page.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
@@ -37,8 +20,8 @@
 <head>
     <meta charset="UTF-8">
     <title>Unzer UI Examples</title>
-    <script src="https://code.jquery.com/jquery-3.5.1.min.js" crossorigin="anonymous"></script>
-    <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery.form/4.2.2/jquery.form.min.js" crossorigin="anonymous"></script>
+    <script src="https://code.jquery.com/jquery-3.6.0.min.js" crossorigin="anonymous"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery.form/4.3.0/jquery.form.min.js" crossorigin="anonymous"></script>
 
     <link rel="stylesheet" href="https://static.unzer.com/v1/unzer.css" />
     <script type="text/javascript" src="https://static.unzer.com/v1/unzer.js"></script>
@@ -71,7 +54,9 @@
 
     <!-- The Payment Page needs to be initialized using the private key, that means it can only be done with a Server-To-Server call.
     Therefore we redirect to the controller without doing anything here. -->
-    <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    <div class="field">
+        <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    </div>
 </form>
 
 <script>
@@ -107,6 +92,9 @@
                         // redirect to result handler
                         window.location.href = '<?php echo RETURN_CONTROLLER_URL; ?>';
                     });
+                    checkout.error(function() {
+                        $errorHolder.html('Transaction Failure');
+                    });
 
                 }).catch(function(error) {
                     // handle error on init
diff --git a/vendor/unzerdev/php-sdk/examples/ExampleDebugHandler.php b/vendor/unzerdev/php-sdk/examples/ExampleDebugHandler.php
index 93f97ec..0b855ff 100644
--- a/vendor/unzerdev/php-sdk/examples/ExampleDebugHandler.php
+++ b/vendor/unzerdev/php-sdk/examples/ExampleDebugHandler.php
@@ -2,25 +2,8 @@
 /**
  * This custom debug handler will echo out debug messages.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 namespace UnzerSDK\examples;
 
diff --git a/vendor/unzerdev/php-sdk/examples/Failure.php b/vendor/unzerdev/php-sdk/examples/Failure.php
index 77ee6b6..7826a88 100644
--- a/vendor/unzerdev/php-sdk/examples/Failure.php
+++ b/vendor/unzerdev/php-sdk/examples/Failure.php
@@ -2,25 +2,8 @@
 /**
  * This is the failure page for the example payments.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 session_start();
@@ -28,25 +11,33 @@
 
 <!DOCTYPE html>
 <html lang="en">
-    <body>
-        <h1 id="result">Failure</h1>
-        <p>
-            There has been an error completing the payment.
-            <?php
-            if (isset($_SESSION['merchantMessage']) && !empty($_SESSION['merchantMessage'])) {
-                echo '<p><strong>Merchant message (don\'t show this to the customer):</strong> ' . $_SESSION['merchantMessage'] . '</p>';
-            }
-            if (isset($_SESSION['clientMessage']) && !empty($_SESSION['clientMessage'])) {
-                echo '<p><strong>Client message (this is the error message for the customer):</strong> ' . $_SESSION['clientMessage'] . '</p>';
-            }
-            if (isset($_SESSION['ShortId']) && !empty($_SESSION['ShortId'])) {
-                echo '<p>Please look for ShortId ' . $_SESSION['ShortId'] . ' in Unzer Insights to see the transaction.</p>';
-            }
-            if (isset($_SESSION['PaymentId']) && !empty($_SESSION['PaymentId'])) {
-                echo '<p>The PaymentId of your transaction is \'' . $_SESSION['PaymentId'] . '\'.</p>';
-            }
-            ?>
-        </p>
-        <p><a href=".">start again</a></p>
-    </body>
+<head>
+    <script src="https://code.jquery.com/jquery-3.6.0.min.js"
+            integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4=" crossorigin="anonymous"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/semantic-ui/2.4.1/semantic.min.js"></script>
+    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/semantic-ui/2.4.1/semantic.min.css"/>
+</head>
+<body style="margin: 30px 70px 0;">
+<div class="ui container segment">
+    <h1 id="result" class="ui header">Failure</h1>
+    <p>
+        There has been an error completing the payment.
+        <?php
+        if (isset($_SESSION['merchantMessage']) && !empty($_SESSION['merchantMessage'])) {
+            echo '<p><strong>Merchant message (don\'t show this to the customer):</strong> ' . $_SESSION['merchantMessage'] . '</p>';
+        }
+        if (isset($_SESSION['clientMessage']) && !empty($_SESSION['clientMessage'])) {
+            echo '<p><strong>Client message (this is the error message for the customer):</strong> ' . $_SESSION['clientMessage'] . '</p>';
+        }
+        if (isset($_SESSION['ShortId']) && !empty($_SESSION['ShortId'])) {
+            echo '<p>Please look for ShortId ' . $_SESSION['ShortId'] . ' in Unzer Insights to see the transaction.</p>';
+        }
+        if (isset($_SESSION['PaymentId']) && !empty($_SESSION['PaymentId'])) {
+            echo '<p>The PaymentId of your transaction is \'' . $_SESSION['PaymentId'] . '\'.</p>';
+        }
+        ?>
+    </p>
+    <a href="." class="ui green button">start again</a>
+</div>
+</body>
 </html>
diff --git a/vendor/unzerdev/php-sdk/examples/Giropay/Constants.php b/vendor/unzerdev/php-sdk/examples/Giropay/Constants.php
index a48246a..0bbb5fc 100644
--- a/vendor/unzerdev/php-sdk/examples/Giropay/Constants.php
+++ b/vendor/unzerdev/php-sdk/examples/Giropay/Constants.php
@@ -2,25 +2,8 @@
 /**
  * This file defines the constants needed for the Giropay example.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 require_once __DIR__ . '/../Constants.php';
diff --git a/vendor/unzerdev/php-sdk/examples/Giropay/Controller.php b/vendor/unzerdev/php-sdk/examples/Giropay/Controller.php
index 0cc02bf..29c02d2 100644
--- a/vendor/unzerdev/php-sdk/examples/Giropay/Controller.php
+++ b/vendor/unzerdev/php-sdk/examples/Giropay/Controller.php
@@ -3,25 +3,8 @@
  * This is the controller for the Giropay example.
  * It is called when the pay button on the index page is clicked.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
diff --git a/vendor/unzerdev/php-sdk/examples/Giropay/index.php b/vendor/unzerdev/php-sdk/examples/Giropay/index.php
index 8287dd7..3b9fb05 100644
--- a/vendor/unzerdev/php-sdk/examples/Giropay/index.php
+++ b/vendor/unzerdev/php-sdk/examples/Giropay/index.php
@@ -2,25 +2,8 @@
 /**
  * This file provides an example implementation of the Giropay payment type.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
@@ -36,8 +19,9 @@
 <head>
     <meta charset="UTF-8">
     <title>Unzer UI Examples</title>
-    <script src="https://code.jquery.com/jquery-3.5.1.min.js"
-            integrity="sha256-9/aliU8dGd2tb6OSsuzixeV4y/faTqgFtohetphbbj0=" crossorigin="anonymous"></script>
+    <script src="https://code.jquery.com/jquery-3.6.0.min.js"
+            integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4="
+            crossorigin="anonymous"></script>
 
     <link rel="stylesheet" href="https://static.unzer.com/v1/unzer.css" />
     <script type="text/javascript" src="https://static.unzer.com/v1/unzer.js"></script>
@@ -49,7 +33,9 @@
 
 <form id="payment-form" class="unzerUI form" novalidate>
     <div class="field" id="error-holder" style="color: #9f3a38"> </div>
-    <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    <div class="field">
+        <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    </div>
 </form>
 
 <script>
diff --git a/vendor/unzerdev/php-sdk/examples/Googlepay/Constants.php b/vendor/unzerdev/php-sdk/examples/Googlepay/Constants.php
new file mode 100644
index 0000000..863a4e4
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/examples/Googlepay/Constants.php
@@ -0,0 +1,9 @@
+<?php
+/**
+ * This file defines the constants needed for the Google Pay example.
+ */
+
+require_once __DIR__ . '/../Constants.php';
+
+define('EXAMPLE_URL', EXAMPLE_BASE_FOLDER . 'Googlepay');
+define('CONTROLLER_URL', EXAMPLE_URL . '/Controller.php');
diff --git a/vendor/unzerdev/php-sdk/examples/Googlepay/Controller.php b/vendor/unzerdev/php-sdk/examples/Googlepay/Controller.php
new file mode 100644
index 0000000..7b3692e
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/examples/Googlepay/Controller.php
@@ -0,0 +1,95 @@
+<?php
+/**
+ * This is the controller for the Google Pay example.
+ * It is called when the pay button on the index page is clicked.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+
+/** Require the constants of this example */
+const TRANSACTION_STATUS_KEY = 'transactionStatus';
+const REDIRECT_URL_KEY = 'redirectUrl';
+require_once __DIR__ . '/Constants.php';
+
+/** @noinspection PhpIncludeInspection */
+/** Require the composer autoloader file */
+require_once __DIR__ . '/../../../../autoload.php';
+
+use UnzerSDK\examples\ExampleDebugHandler;
+use UnzerSDK\Exceptions\UnzerApiException;
+use UnzerSDK\Unzer;
+
+session_start();
+session_unset();
+
+$clientMessage = 'Something went wrong. Please try again later.';
+$merchantMessage = 'Something went wrong. Please try again later.';
+
+function redirect($url, $merchantMessage = '', $clientMessage = '')
+{
+    $_SESSION['merchantMessage'] = $merchantMessage;
+    $_SESSION['clientMessage']   = $clientMessage;
+    header('Location: ' . $url);
+    die();
+}
+
+// These lines are just for this example
+$jsonData      = json_decode(file_get_contents('php://input'), false);
+$paymentTypeId = $jsonData->typeId;
+$transactionType = $jsonData->transaction_type ?? 'authorize';
+
+// You will need the id of the payment type created in the frontend (index.php)
+if (empty($paymentTypeId)) {
+    echo json_encode(['result' => false]);
+    return;
+}
+
+$transactionResult = [
+    TRANSACTION_STATUS_KEY => 'error',
+    REDIRECT_URL_KEY => ''
+];
+
+// Catch API errors, write the message to your log and show the ClientMessage to the client.
+try {
+    // Create an Unzer object using your private key and register a debug handler if you want to.
+    $unzer = new Unzer(UNZER_PAPI_PRIVATE_KEY);
+    $unzer->setDebugMode(true)->setDebugHandler(new ExampleDebugHandler());
+
+    if ($transactionType === 'charge') {
+        $charge = new \UnzerSDK\Resources\TransactionTypes\Charge(12.32, 'EUR', RETURN_CONTROLLER_URL);
+        $transaction = $unzer->performCharge($charge, $paymentTypeId);
+    } else {
+        $authorize = new \UnzerSDK\Resources\TransactionTypes\Authorization(12.32, 'EUR', RETURN_CONTROLLER_URL);
+        $transaction = $unzer->performAuthorization($authorize, $paymentTypeId);
+    }
+
+    // You'll need to remember the paymentId for later in the ReturnController
+    $_SESSION['PaymentId'] = $transaction->getPaymentId();
+    $_SESSION['ShortId'] = $transaction->getShortId();
+
+    $redirectUrl = $transaction->getRedirectUrl();
+
+    if (!empty($redirectUrl)) {
+        $transactionResult[REDIRECT_URL_KEY] = $redirectUrl;
+    }
+
+    if ($transaction->isSuccess()) {
+        $transactionResult[TRANSACTION_STATUS_KEY] = 'success';
+        echo json_encode($transactionResult);
+        return;
+    }
+    if ($transaction->isPending()) {
+        $transactionResult[TRANSACTION_STATUS_KEY] = 'pending';
+
+        echo json_encode($transactionResult);
+        return;
+    }
+} catch (UnzerApiException $e) {
+    $_SESSION['merchantMessage'] = $e->getMerchantMessage();
+    $_SESSION['clientMessage'] = $e->getClientMessage();
+} catch (RuntimeException $e) {
+    $_SESSION['merchantMessage'] = $e->getMessage();
+}
+
+echo json_encode($transactionResult);
diff --git a/vendor/unzerdev/php-sdk/examples/Googlepay/index.php b/vendor/unzerdev/php-sdk/examples/Googlepay/index.php
new file mode 100644
index 0000000..86dc146
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/examples/Googlepay/index.php
@@ -0,0 +1,197 @@
+<?php
+
+/**
+ * This file provides an example implementation of the Googlepay payment type.
+ */
+
+/** Require the constants of this example */
+require_once __DIR__ . '/Constants.php';
+
+/** @noinspection PhpIncludeInspection */
+/** Require the composer autoloader file */
+require_once __DIR__ . '/../../../../autoload.php';
+?>
+
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8"/>
+    <title>Unzer UI Examples</title>
+    <script src="https://code.jquery.com/jquery-3.6.0.min.js"
+            integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4="
+            crossorigin="anonymous"></script>
+
+    <link rel="stylesheet" href="https://static.unzer.com/v1/unzer.css"/>
+    <script type="text/javascript" src="https://static.unzer.com/v1/unzer.js"></script>
+    <script src="https://pay.google.com/gp/p/js/pay.js"></script>
+
+</head>
+
+<body style="margin: 70px 70px 0;">
+
+<p><a href="https://docs.unzer.com/reference/test-data" target="_blank">Click here to open our test data in new tab.</a><br/>
+</p>
+
+<form id="payment-form" class="unzerUI form" novalidate>
+    <!-- This is just for the example - Start -->
+    <div class="fields inline">
+        <label for="transaction_type">Chose the transaction type you want to test:</label>
+        <div class="field">
+            <div class="unzerUI radio checkbox">
+                <input type="radio" name="transaction_type" value="authorize" checked="">
+                <label>Authorize</label>
+            </div>
+        </div>
+        <div class="field">
+            <div class="unzerUI radio checkbox">
+                <input type="radio" name="transaction_type" value="charge">
+                <label>Charge</label>
+            </div>
+        </div>
+    </div>
+    <!-- This is just for the example - End -->
+
+    <div>
+        <div class="field" id="error-holder" style="color: #9f3a38"> </div>
+        <div class="button-well">
+            <div class="applePayButtonContainer">
+                <div class="apple-pay-button apple-pay-button-black" lang="us"
+                     onclick="setupApplePaySession()"
+                     title="Start Apple Pay" role="link" tabindex="0">
+                </div>
+            </div>
+        </div>
+    </div>
+</form>
+
+<div id="dimmer-holder-googlepay" class="ui active dimmer" style="display: none;">
+    <div class="ui loader"></div>
+</div>
+
+<div id="example-googlepay-stack"></div>
+<div id="error-holder-googlepay" class="field" style="text-align: center; color: #9f3a38"></div>
+
+<script>
+    const unzerInstance = new unzer('<?php echo UNZER_PAPI_PUBLIC_KEY; ?>');
+    const colors = ['black','white'];
+    const googlepayChannelId = "<?php echo UNZER_EXAMPLE_GOOGLEPAY_CHANNEL; ?>"
+    const stackHolder = document.querySelector('#example-googlepay-stack');
+
+    const tmpPaymentDataRequestObject = {
+        gatewayMerchantId: googlepayChannelId,
+        allowedCardNetworks: [
+            'MASTERCARD',
+            'VISA',
+            'DISCOVER',
+            'JCB',
+        ],
+        merchantInfo: {
+            merchantId: googlepayChannelId,
+            merchantName: 'Example Merchant'
+        },
+        transactionInfo: {
+            displayItems: [],
+            countryCode: 'DE',
+            currencyCode: 'EUR',
+            totalPrice: '12.00',
+        },
+    }
+
+    function handleGooglepayError(error) {
+        let errorMessage = error.customerMessage || error.message || 'Error';
+        if (error.data && Array.isArray(error.data.errors) && error.data.errors[0]) {
+            errorMessage = error.data.errors[0].customerMessage || 'Error'
+        }
+
+        document.getElementById('error-holder-googlepay').innerHTML = errorMessage;
+
+        return {
+            status: 'error',
+            message: errorMessage || 'Unexpected error'
+        }
+    }
+
+    colors.map(function (color) {
+        const htmlString = '<div id="example-googlepay-' + color + '" class="field" style="text-align: center; margin: 5px 0"></div>'
+        return ({
+            instance: null,
+            color: color,
+            htmlString: htmlString
+        })
+    }).forEach(function (item) {
+        stackHolder.insertAdjacentHTML('beforeend', item.htmlString)
+        item.instance = unzerInstance.Googlepay()
+        const extendedPaymentDataRequestObject = {
+            ...tmpPaymentDataRequestObject,
+            buttonColor: item.color,
+            onPaymentAuthorizedCallback: (paymentData) => {
+                document.getElementById('error-holder-googlepay').innerHTML = ''
+                const $form = $('form[id="payment-form"]');
+                const formObject = QueryStringToObject($form.serialize());
+
+                return item.instance.createResource(paymentData)
+                    .then(typeCreationResult => {
+                        document.getElementById('dimmer-holder-googlepay').style.display = 'block';
+                        formObject.typeId = typeCreationResult.id;
+
+                        return fetch(
+                            './Controller.php',
+                            {
+                                body: JSON.stringify(formObject),
+                                method: 'POST'
+                            }
+                        )
+                            .then(response => response.json())
+                            .then( transactionResult => {
+                                const status = transactionResult.transactionStatus;
+
+                                if (status === 'success' || status === 'pending') {
+                                    if (transactionResult.redirectUrl.trim().length !== 0) {
+                                        window.location.href = transactionResult.redirectUrl;
+                                    } else {
+                                        window.location.href = '<?php echo RETURN_CONTROLLER_URL; ?>';
+                                    }
+                                    return { status: 'success' };
+                                }
+                                window.location.href = '<?php echo FAILURE_URL; ?>';
+                                return {
+                                    status: 'error',
+                                    message: transactionResult.customerMessage || transactionResult.message || 'Unexpected error'
+                                }
+                            })
+                        .catch(function (error) {
+                                return handleGooglepayError(error);
+                            }
+                        )
+                    })
+                    .catch(function (error) {
+                        return handleGooglepayError(error);
+                    })
+            }
+        }
+
+        const paymentDataRequestObject = item.instance.initPaymentDataRequestObject(extendedPaymentDataRequestObject)
+        item.instance.create(
+            {
+                containerId: 'example-googlepay-' + item.color
+            },
+            paymentDataRequestObject
+        )
+    })
+
+    // Translates query string to object
+    function QueryStringToObject(queryString) {
+        const pairs = queryString.slice().split('&');
+        let result = {};
+
+        pairs.forEach(function(pair) {
+            pair = pair.split('=');
+            result[pair[0]] = decodeURIComponent(pair[1] || '');
+        });
+        return JSON.parse(JSON.stringify(result));
+    }
+
+</script>
+
+</body>
+</html>
diff --git a/vendor/unzerdev/php-sdk/examples/HostedPayPage/Constants.php b/vendor/unzerdev/php-sdk/examples/HostedPayPage/Constants.php
index ea10350..22a8644 100644
--- a/vendor/unzerdev/php-sdk/examples/HostedPayPage/Constants.php
+++ b/vendor/unzerdev/php-sdk/examples/HostedPayPage/Constants.php
@@ -2,25 +2,8 @@
 /**
  * This file defines the constants needed for the Hosted Payment Page example.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 require_once __DIR__ . '/../Constants.php';
diff --git a/vendor/unzerdev/php-sdk/examples/HostedPayPage/Controller.php b/vendor/unzerdev/php-sdk/examples/HostedPayPage/Controller.php
index d60ab50..f74392c 100644
--- a/vendor/unzerdev/php-sdk/examples/HostedPayPage/Controller.php
+++ b/vendor/unzerdev/php-sdk/examples/HostedPayPage/Controller.php
@@ -3,25 +3,8 @@
  * This is the controller for the Hosted Payment Page example.
  * It is called when the pay button on the index page is clicked.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
@@ -31,15 +14,17 @@
 /** Require the composer autoloader file */
 require_once __DIR__ . '/../../../../autoload.php';
 
+use UnzerSDK\Constants\CustomerGroups;
+use UnzerSDK\Constants\CustomerRegistrationLevel;
 use UnzerSDK\Constants\Salutations;
 use UnzerSDK\examples\ExampleDebugHandler;
 use UnzerSDK\Exceptions\UnzerApiException;
-use UnzerSDK\Resources\EmbeddedResources\Address;
-use UnzerSDK\Unzer;
 use UnzerSDK\Resources\Basket;
 use UnzerSDK\Resources\CustomerFactory;
+use UnzerSDK\Resources\EmbeddedResources\Address;
 use UnzerSDK\Resources\EmbeddedResources\BasketItem;
 use UnzerSDK\Resources\PaymentTypes\Paypage;
+use UnzerSDK\Unzer;
 
 session_start();
 session_unset();
@@ -50,7 +35,7 @@
 function redirect($url, $merchantMessage = '', $clientMessage = '')
 {
     $_SESSION['merchantMessage'] = $merchantMessage;
-    $_SESSION['clientMessage']   = $clientMessage;
+    $_SESSION['clientMessage'] = $clientMessage;
     header('Location: ' . $url);
     die();
 }
@@ -65,7 +50,7 @@ function redirect($url, $merchantMessage = '', $clientMessage = '')
     $unzer->setDebugMode(true)->setDebugHandler(new ExampleDebugHandler());
 
     // A customer with matching addresses is mandatory for Installment payment type
-    $address  = (new Address())
+    $address = (new Address())
         ->setName('Max Mustermann')
         ->setStreet('Vangerowstr. 18')
         ->setCity('Heidelberg')
@@ -76,6 +61,7 @@ function redirect($url, $merchantMessage = '', $clientMessage = '')
     $customer = CustomerFactory::createCustomer('Max', 'Mustermann')
         ->setSalutation(Salutations::MR)
         ->setBirthDate('2000-02-12')
+        ->setLanguage('de')
         ->setEmail('test@test.com');
 
     // These are the mandatory parameters for the payment page ...
@@ -83,28 +69,45 @@ function redirect($url, $merchantMessage = '', $clientMessage = '')
 
     $orderId = 'o' . str_replace(['0.', ' '], '', microtime(false));
 
+    // Just for example purpose. Make sure to generate a unique ID.
+    $threatMetrixId = 'php-sdk-example_' . $orderId;
+
+
     // ... however you can customize the Payment Page using additional parameters.
-    $paypage->setLogoImage('https://dev.unzer.com/wp-content/uploads/2020/09/Unzer__PrimaryLogo_Raspberry_RGB.png')
-            ->setFullPageImage('https://dev.unzer.com/wp-content/uploads/2020/09/01_Unzer_Ambitious_RGB_LoRes.jpg')
-            ->setShopName('My Test Shop')
-            ->setShopDescription('Best shop in the whole world!')
-            ->setTagline('Try and stop us from being awesome!')
-            ->setOrderId('OrderNr' . $orderId)
-            ->setTermsAndConditionUrl('https://www.unzer.com/en/')
-            ->setPrivacyPolicyUrl('https://www.unzer.com/de/datenschutz/')
-            ->setImprintUrl('https://www.unzer.com/de/impressum')
-            ->setHelpUrl('https://www.unzer.com/de/support')
-            ->setContactUrl('https://www.unzer.com/en/ueber-unzer')
-            ->setInvoiceId('i' . microtime(true));
+    $paypage->setShopName('My Test Shop')
+        ->setShopDescription('Best shop in the whole world!')
+        ->setTagline('Try and stop us from being awesome!')
+        ->setOrderId('OrderNr' . $orderId)
+        ->setTermsAndConditionUrl('https://www.unzer.com/en/')
+        ->setPrivacyPolicyUrl('https://www.unzer.com/de/datenschutz/')
+        ->setImprintUrl('https://www.unzer.com/de/impressum')
+        ->setHelpUrl('https://www.unzer.com/de/support')
+        ->setContactUrl('https://www.unzer.com/en/ueber-unzer')
+        ->setFullPageImage(UNZER_PP_FULL_PAGE_IMAGE_URL)
+        ->setLogoImage(UNZER_PP_LOGO_URL)
+        ->setAdditionalAttribute('riskData.threatMetrixId', $threatMetrixId)
+        ->setAdditionalAttribute('riskData.customerGroup', CustomerGroups::GOOD)
+        ->setAdditionalAttribute('riskData.confirmedAmount', 99.99)
+        ->setAdditionalAttribute('riskData.confirmedOrders', 2)
+        ->setAdditionalAttribute('riskData.registrationLevel', CustomerRegistrationLevel::REGISTERED)
+        ->setAdditionalAttribute('riskData.registrationDate	', '20160412')
+        ->setInvoiceId('i' . microtime(true));
 
     // ... in order to enable Unzer Instalment you will need to set the effectiveInterestRate as well.
     $paypage->setEffectiveInterestRate(4.99);
 
     // ... a Basket is mandatory for InstallmentSecured
-    $basketItem = (new BasketItem('Hat', 100.00, 119.00, 1))
-        ->setAmountGross(119.0)
-        ->setAmountVat(19.0);
-    $basket = new Basket($orderId, 119.0, 'EUR', [$basketItem]);
+    $basketItem = (new BasketItem())
+        ->setAmountPerUnitGross(119.00)
+        ->setVat(19.00)
+        ->setQuantity(1)
+        ->setBasketItemReferenceId('item1')
+        ->setTitle('Hat');
+
+    $basket = new Basket($orderId);
+    $basket->setTotalValueGross(119.00)
+        ->addBasketItem($basketItem)
+        ->setCurrencyCode('EUR');
 
     if ($transactionType === 'charge') {
         $unzer->initPayPageCharge($paypage, $customer, $basket);
diff --git a/vendor/unzerdev/php-sdk/examples/HostedPayPage/index.php b/vendor/unzerdev/php-sdk/examples/HostedPayPage/index.php
index 75096f2..d69db61 100644
--- a/vendor/unzerdev/php-sdk/examples/HostedPayPage/index.php
+++ b/vendor/unzerdev/php-sdk/examples/HostedPayPage/index.php
@@ -2,25 +2,8 @@
 /**
  * This file provides an example implementation of the Hosted Payment Page.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
@@ -37,8 +20,9 @@
 <head>
     <meta charset="UTF-8">
     <title>Unzer UI Examples</title>
-    <script src="https://code.jquery.com/jquery-3.5.1.min.js"
-            integrity="sha256-9/aliU8dGd2tb6OSsuzixeV4y/faTqgFtohetphbbj0=" crossorigin="anonymous"></script>
+    <script src="https://code.jquery.com/jquery-3.6.0.min.js"
+            integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4="
+            crossorigin="anonymous"></script>
 
     <link rel="stylesheet" href="https://static.unzer.com/v1/unzer.css" />
     <script type="text/javascript" src="https://static.unzer.com/v1/unzer.js"></script>
@@ -68,7 +52,9 @@
 
     <!-- The Payment Page needs to be initialized using the private key, that means it can only be done with a Server-To-Server call.
     Therefore we redirect to the controller without doing anything here. -->
-    <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    <div class="field">
+        <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    </div>
 </form>
 
 <script>
diff --git a/vendor/unzerdev/php-sdk/examples/IDeal/Constants.php b/vendor/unzerdev/php-sdk/examples/IDeal/Constants.php
index ae60a2d..9278d82 100644
--- a/vendor/unzerdev/php-sdk/examples/IDeal/Constants.php
+++ b/vendor/unzerdev/php-sdk/examples/IDeal/Constants.php
@@ -2,25 +2,8 @@
 /**
  * This file defines the constants needed for the iDeal example.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 require_once __DIR__ . '/../Constants.php';
diff --git a/vendor/unzerdev/php-sdk/examples/IDeal/Controller.php b/vendor/unzerdev/php-sdk/examples/IDeal/Controller.php
index 0c07f67..0b50d1a 100644
--- a/vendor/unzerdev/php-sdk/examples/IDeal/Controller.php
+++ b/vendor/unzerdev/php-sdk/examples/IDeal/Controller.php
@@ -3,25 +3,8 @@
  * This is the controller for the iDeal example.
  * It is called when the pay button on the index page is clicked.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
diff --git a/vendor/unzerdev/php-sdk/examples/IDeal/index.php b/vendor/unzerdev/php-sdk/examples/IDeal/index.php
index ea306c7..82809c4 100644
--- a/vendor/unzerdev/php-sdk/examples/IDeal/index.php
+++ b/vendor/unzerdev/php-sdk/examples/IDeal/index.php
@@ -2,25 +2,8 @@
 /**
  * This file provides an example implementation of the iDeal payment type.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
@@ -36,8 +19,9 @@
 <head>
     <meta charset="UTF-8">
     <title>Unzer UI Examples</title>
-    <script src="https://code.jquery.com/jquery-3.5.1.min.js"
-            integrity="sha256-9/aliU8dGd2tb6OSsuzixeV4y/faTqgFtohetphbbj0=" crossorigin="anonymous"></script>
+    <script src="https://code.jquery.com/jquery-3.6.0.min.js"
+            integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4="
+            crossorigin="anonymous"></script>
 
     <link rel="stylesheet" href="https://static.unzer.com/v1/unzer.css" />
     <script type="text/javascript" src="https://static.unzer.com/v1/unzer.js"></script>
@@ -50,7 +34,9 @@
 <form id="payment-form" class="unzerUI form" novalidate>
     <div id="example-ideal" class="field"></div>
     <div class="field" id="error-holder" style="color: #9f3a38"> </div>
-    <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    <div class="field">
+        <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    </div>
 </form>
 
 <script>
@@ -63,6 +49,17 @@
         containerId: 'example-ideal'
     });
 
+    let payButton = document.getElementById("submit-button");
+    payButton.disabled = true;
+
+    IDeal.addEventListener('change', function eventHandlerResource(e) {
+        if (e.value) {
+            $("#submit-button").removeAttr('disabled');
+        } else {
+            $("#submit-button").attr('disabled', 'disabled');
+        }
+    })
+
     // Handling payment form submission
     let form = document.getElementById('payment-form');
     form.addEventListener('submit', function(event) {
diff --git a/vendor/unzerdev/php-sdk/examples/InstallmentSecured/Constants.php b/vendor/unzerdev/php-sdk/examples/InstallmentSecured/Constants.php
index c5753dd..6607fcd 100644
--- a/vendor/unzerdev/php-sdk/examples/InstallmentSecured/Constants.php
+++ b/vendor/unzerdev/php-sdk/examples/InstallmentSecured/Constants.php
@@ -2,25 +2,8 @@
 /**
  * This file defines the constants needed for the Installment Secured example.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 require_once __DIR__ . '/../Constants.php';
diff --git a/vendor/unzerdev/php-sdk/examples/InstallmentSecured/Controller.php b/vendor/unzerdev/php-sdk/examples/InstallmentSecured/Controller.php
index d7880a4..625470c 100644
--- a/vendor/unzerdev/php-sdk/examples/InstallmentSecured/Controller.php
+++ b/vendor/unzerdev/php-sdk/examples/InstallmentSecured/Controller.php
@@ -3,25 +3,8 @@
  * This is the controller for the Installment Secured example.
  * It is called when the pay button on the index page is clicked.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
@@ -87,10 +70,17 @@ function redirect($url, $merchantMessage = '', $clientMessage = '')
         ->setEmail('linda.heideich@test.de');
 
     // A Basket is mandatory for Installment Secured payment type
-    $basketItem = (new BasketItem('Hat', 100.00, 119.00, 1))
-        ->setAmountGross(119.0)
-        ->setAmountVat(19.0);
-    $basket = (new Basket($orderId, 119.0, 'EUR', [$basketItem]))->setAmountTotalVat(19.0);
+    $basketItem = (new BasketItem())
+        ->setAmountPerUnitGross(119.00)
+        ->setVat(19)
+        ->setQuantity(1)
+        ->setBasketItemReferenceId('item1')
+        ->setTitle('Hat');
+
+    $basket = new Basket($orderId);
+    $basket->setTotalValueGross(119.00)
+        ->addBasketItem($basketItem)
+        ->setCurrencyCode('EUR');
 
     // initialize the payment
     $authorize = $unzer->authorize(
diff --git a/vendor/unzerdev/php-sdk/examples/InstallmentSecured/PlaceOrderController.php b/vendor/unzerdev/php-sdk/examples/InstallmentSecured/PlaceOrderController.php
index 998f359..da9b1fb 100644
--- a/vendor/unzerdev/php-sdk/examples/InstallmentSecured/PlaceOrderController.php
+++ b/vendor/unzerdev/php-sdk/examples/InstallmentSecured/PlaceOrderController.php
@@ -3,25 +3,8 @@
  * This is the controller for the Unzer Instalment example.
  * It is called when the instalment plan is confirmed and places the order.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
diff --git a/vendor/unzerdev/php-sdk/examples/InstallmentSecured/confirm.php b/vendor/unzerdev/php-sdk/examples/InstallmentSecured/confirm.php
index 59a1e08..a78076b 100644
--- a/vendor/unzerdev/php-sdk/examples/InstallmentSecured/confirm.php
+++ b/vendor/unzerdev/php-sdk/examples/InstallmentSecured/confirm.php
@@ -3,25 +3,8 @@
  * This file provides an example implementation of the Installment Secured payment type.
  * It shows the selected payment plan to the customer who can approve the plan to perform the payment.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 use UnzerSDK\examples\ExampleDebugHandler;
@@ -84,11 +67,12 @@ function redirect($url, $merchantMessage = '', $clientMessage = '')
 <head>
     <meta charset="UTF-8">
     <title>Unzer UI Examples</title>
-    <script src="https://code.jquery.com/jquery-3.5.1.min.js"
-            integrity="sha256-9/aliU8dGd2tb6OSsuzixeV4y/faTqgFtohetphbbj0=" crossorigin="anonymous"></script>
+    <script src="https://code.jquery.com/jquery-3.6.0.min.js"
+            integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4="
+            crossorigin="anonymous"></script>
 
-    <script src="https://cdnjs.cloudflare.com/ajax/libs/semantic-ui/2.3.1/semantic.min.js"></script>
-    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/semantic-ui/2.3.1/semantic.min.css" />
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/semantic-ui/2.4.1/semantic.min.js"></script>
+    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/semantic-ui/2.4.1/semantic.min.css" />
 
 </head>
 
diff --git a/vendor/unzerdev/php-sdk/examples/InstallmentSecured/index.php b/vendor/unzerdev/php-sdk/examples/InstallmentSecured/index.php
index 67e15bc..d147a5a 100644
--- a/vendor/unzerdev/php-sdk/examples/InstallmentSecured/index.php
+++ b/vendor/unzerdev/php-sdk/examples/InstallmentSecured/index.php
@@ -2,25 +2,8 @@
 /**
  * This file provides an example implementation of the Installment Secured direct debit payment type.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
@@ -36,8 +19,9 @@
 <head>
     <meta charset="UTF-8"/>
     <title>Unzer UI Examples</title>
-    <script src="https://code.jquery.com/jquery-3.5.1.min.js"
-            integrity="sha256-9/aliU8dGd2tb6OSsuzixeV4y/faTqgFtohetphbbj0=" crossorigin="anonymous"></script>
+    <script src="https://code.jquery.com/jquery-3.6.0.min.js"
+            integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4="
+            crossorigin="anonymous"></script>
 
     <link rel="stylesheet" href="https://static.unzer.com/v1/unzer.css"/>
     <script type="text/javascript" src="https://static.unzer.com/v1/unzer.js"></script>
@@ -52,9 +36,11 @@
         <!-- The Installment Secured field UI Element will be inserted here -->
     </div>
     <div class="field" id="error-holder" style="color: #9f3a38"> </div>
-    <button id="continue-button" class="unzerUI primary button fluid" type="submit" style="display: none" disabled>
-        Continue
-    </button>
+    <div class="field">
+        <button id="continue-button" class="unzerUI primary button fluid" type="submit" style="display: none" disabled>
+            Continue
+        </button>
+    </div>
 </form>
 
 <script>
diff --git a/vendor/unzerdev/php-sdk/examples/Invoice/Constants.php b/vendor/unzerdev/php-sdk/examples/Invoice/Constants.php
index cde9764..8cedc05 100644
--- a/vendor/unzerdev/php-sdk/examples/Invoice/Constants.php
+++ b/vendor/unzerdev/php-sdk/examples/Invoice/Constants.php
@@ -2,25 +2,8 @@
 /**
  * This file defines the constants needed for the Invoice example.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 require_once __DIR__ . '/../Constants.php';
diff --git a/vendor/unzerdev/php-sdk/examples/Invoice/Controller.php b/vendor/unzerdev/php-sdk/examples/Invoice/Controller.php
index cabde2d..f669564 100644
--- a/vendor/unzerdev/php-sdk/examples/Invoice/Controller.php
+++ b/vendor/unzerdev/php-sdk/examples/Invoice/Controller.php
@@ -3,25 +3,8 @@
  * This is the controller for the Invoice example.
  * It is called when the pay button on the index page is clicked.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
diff --git a/vendor/unzerdev/php-sdk/examples/Invoice/index.php b/vendor/unzerdev/php-sdk/examples/Invoice/index.php
index 5be8758..0a35d4b 100644
--- a/vendor/unzerdev/php-sdk/examples/Invoice/index.php
+++ b/vendor/unzerdev/php-sdk/examples/Invoice/index.php
@@ -2,25 +2,8 @@
 /**
  * This file provides an example implementation of the Invoice payment type.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
@@ -45,7 +28,9 @@
 <body style="margin: 70px 70px 0;">
 
 <form id="payment-form" action="<?php echo CONTROLLER_URL; ?>" class="unzerUI form" novalidate>
-    <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    <div class="field">
+        <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    </div>
 </form>
 
 <script>
diff --git a/vendor/unzerdev/php-sdk/examples/InvoiceSecured/Constants.php b/vendor/unzerdev/php-sdk/examples/InvoiceSecured/Constants.php
index 8f88734..824ced2 100644
--- a/vendor/unzerdev/php-sdk/examples/InvoiceSecured/Constants.php
+++ b/vendor/unzerdev/php-sdk/examples/InvoiceSecured/Constants.php
@@ -2,25 +2,8 @@
 /**
  * This file defines the constants needed for the Invoice Secured example.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 require_once __DIR__ . '/../Constants.php';
diff --git a/vendor/unzerdev/php-sdk/examples/InvoiceSecured/Controller.php b/vendor/unzerdev/php-sdk/examples/InvoiceSecured/Controller.php
index 9fd756b..e649b31 100644
--- a/vendor/unzerdev/php-sdk/examples/InvoiceSecured/Controller.php
+++ b/vendor/unzerdev/php-sdk/examples/InvoiceSecured/Controller.php
@@ -3,25 +3,8 @@
  * This is the controller for the Invoice Secured example.
  * It is called when the pay button on the index page is clicked.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
@@ -71,10 +54,17 @@ function redirect($url, $merchantMessage = '', $clientMessage = '')
     $orderId = 'o' . str_replace(['0.', ' '], '', microtime(false));
 
     // A Basket is mandatory for Invoice Secured payment type
-    $basketItem = (new BasketItem('Hat', 100.00, 119.00, 1))
-        ->setAmountGross(119.0)
-        ->setAmountVat(19.0);
-    $basket = new Basket($orderId, 119.0, 'EUR', [$basketItem]);
+    $basketItem = (new BasketItem())
+        ->setAmountPerUnitGross(119.00)
+        ->setVat(19.00)
+        ->setQuantity(1)
+        ->setBasketItemReferenceId('item1')
+        ->setTitle('Hat');
+
+    $basket = new Basket($orderId);
+    $basket->setTotalValueGross(119.00)
+        ->addBasketItem($basketItem)
+        ->setCurrencyCode('EUR');
 
     $transaction = $unzer->charge(119.0, 'EUR', $paymentTypeId, CONTROLLER_URL, $customerId, $orderId, null, $basket);
 
diff --git a/vendor/unzerdev/php-sdk/examples/InvoiceSecured/index.php b/vendor/unzerdev/php-sdk/examples/InvoiceSecured/index.php
index 8fb4088..30ee373 100644
--- a/vendor/unzerdev/php-sdk/examples/InvoiceSecured/index.php
+++ b/vendor/unzerdev/php-sdk/examples/InvoiceSecured/index.php
@@ -2,25 +2,8 @@
 /**
  * This file provides an example implementation of the Invoice Secured payment type.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
@@ -37,8 +20,9 @@
 <head>
     <meta charset="UTF-8">
     <title>Unzer UI Examples</title>
-    <script src="https://code.jquery.com/jquery-3.5.1.min.js"
-            integrity="sha256-9/aliU8dGd2tb6OSsuzixeV4y/faTqgFtohetphbbj0=" crossorigin="anonymous"></script>
+    <script src="https://code.jquery.com/jquery-3.6.0.min.js"
+            integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4="
+            crossorigin="anonymous"></script>
 
     <link rel="stylesheet" href="https://static.unzer.com/v1/unzer.css" />
     <script type="text/javascript" src="https://static.unzer.com/v1/unzer.js"></script>
@@ -48,13 +32,15 @@
 
 <p><a href="https://docs.unzer.com/reference/test-data" target="_blank">Click here to open our test data in new tab.</a></p>
 
-<form id="payment-form">
+<form id="payment-form" class="unzerUI form">
     <div id="example-invoice-secured"></div>
     <div id="customer" class="field">
         <!-- The customer form UI element will be inserted here -->
     </div>
     <div class="field" id="error-holder" style="color: #9f3a38"></div>
-    <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    <div class="field">
+        <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    </div>
 </form>
 
 <script>
@@ -70,6 +56,18 @@
         containerId: 'customer'
     });
 
+    let payButton = document.getElementById("submit-button");
+
+    payButton.disabled = true;
+
+    Customer.addEventListener('validate', function eventHandlerCustomer(e) {
+        if (e.success) {
+            $('button[type="submit"]').removeAttr('disabled');
+        } else {
+            $('button[type="submit"]').attr('disabled', 'disabled');
+        }
+    })
+
     // Handle payment form submission.
     let form = document.getElementById('payment-form');
     form.addEventListener('submit', function(event) {
diff --git a/vendor/unzerdev/php-sdk/examples/Klarna/Constants.php b/vendor/unzerdev/php-sdk/examples/Klarna/Constants.php
new file mode 100644
index 0000000..b3f45b3
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/examples/Klarna/Constants.php
@@ -0,0 +1,12 @@
+<?php
+/**
+ * This file defines the constants needed for the Klarna example.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+
+require_once __DIR__ . '/../Constants.php';
+
+define('EXAMPLE_URL', EXAMPLE_BASE_FOLDER . 'Klarna');
+define('CONTROLLER_URL', EXAMPLE_URL . '/Controller.php');
diff --git a/vendor/unzerdev/php-sdk/examples/Klarna/Controller.php b/vendor/unzerdev/php-sdk/examples/Klarna/Controller.php
new file mode 100644
index 0000000..2e5161c
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/examples/Klarna/Controller.php
@@ -0,0 +1,121 @@
+<?php
+/**
+ * This is the controller for the Klarna example.
+ * It is called when the pay button on the index page is clicked.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+
+/** Require the constants of this example */
+require_once __DIR__ . '/Constants.php';
+
+/** @noinspection PhpIncludeInspection */
+/** Require the composer autoloader file */
+require_once __DIR__ . '/../../../../autoload.php';
+
+use UnzerSDK\Constants\Salutations;
+use UnzerSDK\Constants\ShippingTypes;
+use UnzerSDK\examples\ExampleDebugHandler;
+use UnzerSDK\Exceptions\UnzerApiException;
+use UnzerSDK\Resources\Basket;
+use UnzerSDK\Resources\CustomerFactory;
+use UnzerSDK\Resources\EmbeddedResources\Address;
+use UnzerSDK\Resources\EmbeddedResources\BasketItem;
+use UnzerSDK\Resources\TransactionTypes\Authorization;
+use UnzerSDK\Resources\TransactionTypes\Charge;
+use UnzerSDK\Unzer;
+
+session_start();
+session_unset();
+
+$clientMessage = 'Something went wrong. Please try again later.';
+$merchantMessage = 'Something went wrong. Please try again later.';
+
+function redirect($url, $merchantMessage = '', $clientMessage = '')
+{
+    $_SESSION['merchantMessage'] = $merchantMessage;
+    $_SESSION['clientMessage']   = $clientMessage;
+    header('Location: ' . $url);
+    die();
+}
+
+// You will need the id of the payment type created in the frontend (index.php)
+if (!isset($_POST['resourceId'])) {
+    redirect(FAILURE_URL, 'Resource id is missing!', $clientMessage);
+}
+$paymentTypeId   = $_POST['resourceId'];
+
+$transactionType = $_POST['transaction_type'] ?? 'authorize';
+
+// Catch API errors, write the message to your log and show the ClientMessage to the client.
+try {
+    // Create an Unzer object using your private key and register a debug handler if you want to.
+    $unzer = new Unzer(UNZER_PAPI_PRIVATE_KEY);
+    $unzer->setDebugMode(true)->setDebugHandler(new ExampleDebugHandler());
+
+    $orderId = 'o' . str_replace(['0.', ' '], '', microtime(false));
+
+    // A Basket is mandatory for Invoice Secured payment type
+    $basketItem = (new BasketItem())
+        ->setAmountPerUnitGross(119.00)
+        ->setVat(19.00)
+        ->setQuantity(1)
+        ->setBasketItemReferenceId('item1')
+        ->setTitle('Hat');
+
+    $basket = new Basket($orderId);
+    $basket->setTotalValueGross(119.00)
+        ->addBasketItem($basketItem)
+        ->setCurrencyCode('EUR');
+
+    // A customer is mandatory for Klarna payment type
+    $address  = (new Address())
+        ->setName('Max Universum')
+        ->setStreet('Hugo-Junkers-Str. 4')
+        ->setZip('60386')
+        ->setCity('Frankfurt am Main')
+        ->setCountry('DE')
+        ->setState('DE-BO')
+        ->setShippingType(ShippingTypes::EQUALS_BILLING);
+
+    $customer = CustomerFactory::createCustomer('Peter', 'Universum')
+        ->setSalutation(Salutations::MR)
+        ->setCompany('Unzer GmbH')
+        ->setBirthDate('1989-12-24')
+        ->setEmail('peter.universum@universum-group.de')
+        ->setMobile('+49172123456')
+        ->setPhone('+4962216471100')
+        ->setBillingAddress($address)
+        ->setLanguage('de');
+
+    $transactionData = [119.00, 'EUR', RETURN_CONTROLLER_URL];
+    $additionalTransactionData = [
+        'termsAndConditionUrl' => 'https://www.unzer.com/de/',
+        'privacyPolicyUrl' => 'https://www.unzer.com/de/'
+    ];
+
+    // Create a authorize transaction to get the redirectUrl.
+    $authorizationInstance = (new Authorization(...$transactionData))
+        ->setAdditionalTransactionData((object)$additionalTransactionData);
+    $transaction = $unzer->performAuthorization($authorizationInstance, $paymentTypeId, $customer, null, $basket);
+
+    // You'll need to remember the paymentId for later in the ReturnController
+    $_SESSION['PaymentId'] = $transaction->getPaymentId();
+    $_SESSION['ShortId']   = $transaction->getShortId();
+    $_SESSION['isAuthorizeTransaction'] = true;
+
+    // Redirect to the Klarna page
+    if (!$transaction->isError() && $transaction->getRedirectUrl() !== null) {
+        redirect($transaction->getRedirectUrl());
+    }
+
+    // Check the result message of the charge to find out what went wrong.
+    $merchantMessage = $transaction->getMessage()->getCustomer();
+} catch (UnzerApiException $e) {
+    $merchantMessage = $e->getMerchantMessage();
+    $clientMessage = $e->getClientMessage();
+} catch (RuntimeException $e) {
+    $merchantMessage = $e->getMessage();
+}
+redirect(FAILURE_URL, $merchantMessage, $clientMessage);
diff --git a/vendor/unzerdev/php-sdk/examples/Klarna/index.php b/vendor/unzerdev/php-sdk/examples/Klarna/index.php
new file mode 100644
index 0000000..047c0bb
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/examples/Klarna/index.php
@@ -0,0 +1,73 @@
+<?php
+/**
+ * This file provides an example implementation of the Klarna payment type.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+
+/** Require the constants of this example */
+require_once __DIR__ . '/Constants.php';
+
+/** @noinspection PhpIncludeInspection */
+/** Require the composer autoloader file */
+require_once __DIR__ . '/../../../../autoload.php';
+?>
+
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <title>Unzer UI Examples</title>
+    <script src="https://code.jquery.com/jquery-3.6.0.min.js"
+            integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4="
+            crossorigin="anonymous"></script>
+
+    <link rel="stylesheet" href="https://static.unzer.com/v1/unzer.css" />
+    <script type="text/javascript" src="https://static.unzer.com/v1/unzer.js"></script>
+</head>
+
+<body style="margin: 70px 70px 0;">
+<p><a href="https://docs.unzer.com/reference/test-data" target="_blank">Click here to open our test data in new tab.</a></p>
+
+<form id="payment-form" class="unzerUI form" novalidate>
+
+    <div id="container-example-klarna"></div>
+    <div class="field" id="error-holder" style="color: #9f3a38"> </div>
+    <div class="field">
+        <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    </div>
+</form>
+
+<script>
+    // Create an Unzer instance with your public key
+    let unzerInstance = new unzer('<?php echo UNZER_PAPI_PUBLIC_KEY; ?>');
+
+    // Create an Klarna instance
+    let klarna = unzerInstance.Klarna();
+
+    // Handle payment form submission
+    let form = document.getElementById('payment-form');
+    form.addEventListener('submit', function(event) {
+        event.preventDefault();
+        // Creating a Klarna resource
+        klarna.createResource()
+            .then(function(result) {
+                let hiddenInput = document.createElement('input');
+                hiddenInput.setAttribute('type', 'hidden');
+                hiddenInput.setAttribute('name', 'resourceId');
+                hiddenInput.setAttribute('value', result.id);
+                form.appendChild(hiddenInput);
+                form.setAttribute('method', 'POST');
+                form.setAttribute('action', '<?php echo CONTROLLER_URL; ?>');
+
+                // Submitting the form
+                form.submit();
+            })
+            .catch(function(error) {
+                $('#error-holder').html(error.message)
+            })
+    });
+</script>
+</body>
+</html>
diff --git a/vendor/unzerdev/php-sdk/examples/PayPal/Constants.php b/vendor/unzerdev/php-sdk/examples/PayPal/Constants.php
index c30b852..17a496a 100644
--- a/vendor/unzerdev/php-sdk/examples/PayPal/Constants.php
+++ b/vendor/unzerdev/php-sdk/examples/PayPal/Constants.php
@@ -2,25 +2,8 @@
 /**
  * This file defines the constants needed for the PayPal example.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 require_once __DIR__ . '/../Constants.php';
diff --git a/vendor/unzerdev/php-sdk/examples/PayPal/Controller.php b/vendor/unzerdev/php-sdk/examples/PayPal/Controller.php
index 6e3ae35..a71cfb4 100644
--- a/vendor/unzerdev/php-sdk/examples/PayPal/Controller.php
+++ b/vendor/unzerdev/php-sdk/examples/PayPal/Controller.php
@@ -3,25 +3,8 @@
  * This is the controller for the PayPal example.
  * It is called when the pay button on the index page is clicked.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
@@ -33,6 +16,10 @@
 
 use UnzerSDK\examples\ExampleDebugHandler;
 use UnzerSDK\Exceptions\UnzerApiException;
+use UnzerSDK\Resources\Basket;
+use UnzerSDK\Resources\EmbeddedResources\BasketItem;
+use UnzerSDK\Resources\TransactionTypes\Authorization;
+use UnzerSDK\Resources\TransactionTypes\Charge;
 use UnzerSDK\Unzer;
 
 session_start();
@@ -53,6 +40,9 @@ function redirect($url, $merchantMessage = '', $clientMessage = '')
 if (!isset($_POST['resourceId'])) {
     redirect(FAILURE_URL, 'Resource id is missing!', $clientMessage);
 }
+
+$useExpressCheckout = isset($_POST['express-checkout']) && ($_POST['express-checkout'] === '1');
+
 $paymentTypeId   = $_POST['resourceId'];
 
 $transactionType = $_POST['transaction_type'] ?? 'authorize';
@@ -62,12 +52,34 @@ function redirect($url, $merchantMessage = '', $clientMessage = '')
     // Create an Unzer object using your private key and register a debug handler if you want to.
     $unzer = new Unzer(UNZER_PAPI_PRIVATE_KEY);
     $unzer->setDebugMode(true)->setDebugHandler(new ExampleDebugHandler());
+    $paymentType = $unzer->fetchPaymentType($paymentTypeId);
+    $orderId = 'o' . str_replace(['0.', ' '], '', microtime(false));
+
+    $basketItem = (new BasketItem())
+        ->setAmountPerUnitGross(12.32)
+        ->setVat(19.00)
+        ->setQuantity(1)
+        ->setBasketItemReferenceId('item1')
+        ->setTitle('Hat');
+
+    $basket = new Basket($orderId);
+    $basket->setTotalValueGross(12.32)
+        ->addBasketItem($basketItem)
+        ->setCurrencyCode('EUR');
 
     // Create a charge/authorize transaction to get the redirectUrl.
     if ($transactionType === 'charge') {
-        $transaction = $unzer->charge(12.32, 'EUR', $paymentTypeId, RETURN_CONTROLLER_URL);
+        $charge = new Charge(12.32, 'EUR', RETURN_CONTROLLER_URL);
+        if ($useExpressCheckout) {
+            $charge->setCheckoutType('express', $paymentType);
+        }
+        $transaction = $unzer->performCharge($charge, $paymentType, null, null, $basket);
     } else {
-        $transaction = $unzer->authorize(12.32, 'EUR', $paymentTypeId, RETURN_CONTROLLER_URL);
+        $authorize = new Authorization(12.32, 'EUR', RETURN_CONTROLLER_URL);
+        if ($useExpressCheckout) {
+            $authorize->setCheckoutType('express', $paymentType);
+        }
+        $transaction = $unzer->performAuthorization($authorize, $paymentType, null, null, $basket);
     }
 
     // You'll need to remember the paymentId for later in the ReturnController
diff --git a/vendor/unzerdev/php-sdk/examples/PayPal/index.php b/vendor/unzerdev/php-sdk/examples/PayPal/index.php
index 0432b52..0fb4842 100644
--- a/vendor/unzerdev/php-sdk/examples/PayPal/index.php
+++ b/vendor/unzerdev/php-sdk/examples/PayPal/index.php
@@ -2,25 +2,8 @@
 /**
  * This file provides an example implementation of the PayPal payment type.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
@@ -36,8 +19,9 @@
 <head>
     <meta charset="UTF-8">
     <title>Unzer UI Examples</title>
-    <script src="https://code.jquery.com/jquery-3.5.1.min.js"
-            integrity="sha256-9/aliU8dGd2tb6OSsuzixeV4y/faTqgFtohetphbbj0=" crossorigin="anonymous"></script>
+    <script src="https://code.jquery.com/jquery-3.6.0.min.js"
+            integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4="
+            crossorigin="anonymous"></script>
 
     <link rel="stylesheet" href="https://static.unzer.com/v1/unzer.css" />
     <script type="text/javascript" src="https://static.unzer.com/v1/unzer.js"></script>
@@ -46,14 +30,14 @@
 <body style="margin: 70px 70px 0;">
 <h3>Example data:</h3>
 <ul>
-    <li>Username: paypal-customer@heidelpay.de</li>
-    <li>Password: heidelpay</li>
+    <li>Username: paypal-buyer@unzer.com</li>
+    <li>Password: unzer1234</li>
 </ul>
 <strong>Attention:</strong> We recommend to create your own PayPal test account <a href="https://developer.paypal.com" target="_blank">here</a>.
 
 <p><a href="https://docs.unzer.com/reference/test-data" target="_blank">Click here to open our test data in new tab.</a></p>
 
-<form id="payment-form" class="unzerUI form" novalidate>
+<form id="payment-form" class="unzerUI" novalidate>
     <!-- This is just for the example - Start -->
     <div class="fields inline">
         <label for="transaction_type">Chose the transaction type you want to test:</label>
@@ -70,29 +54,55 @@
             </div>
         </div>
     </div>
-    <!-- This is just for the example - End -->
 
+    <!-- This is just for the example - End -->
+    <h3>PayPal</h3>
     <div id="container-example-paypal"></div>
     <div class="field" id="error-holder" style="color: #9f3a38"> </div>
-    <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    <div class="field">
+        <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    </div>
+
+    <h3>PayPal Express</h3>
+    <div id="container-example-paypal-express"></div>
 </form>
 
 <script>
     // Create an Unzer instance with your public key
     let unzerInstance = new unzer('<?php echo UNZER_PAPI_PUBLIC_KEY; ?>');
 
-    // Create an Paypal instance
-    let Paypal = unzerInstance.Paypal();
-    Paypal.create('email', {
+    // Create a normal Paypal instance
+    let paypalInstance = unzerInstance.Paypal();
+    paypalInstance.create('email', {
         containerId: 'container-example-paypal'
     })
 
+    // Create a Paypal Express instance
+    let paypalExpress = unzerInstance.PaypalExpress();
+    paypalExpress.create({
+        containerId: 'container-example-paypal-express',
+        color: 'gold'
+    })
+
     // Handle payment form submission
     let form = document.getElementById('payment-form');
     form.addEventListener('submit', function(event) {
         event.preventDefault();
-        // Creating a Paypal resource
-        Paypal.createResource()
+
+        // If the express button submitted the form use the PaypalExpress instance.
+        if (event.submitter.id === 'pay-button') {
+            paypalInstance = paypalExpress;
+
+            // Create an additional input so that backend can set the checkout type for the transaction.
+            let expressCheckout = document.createElement('input');
+            expressCheckout.setAttribute('type', 'hidden');
+            expressCheckout.setAttribute('name', 'express-checkout');
+            expressCheckout.setAttribute('value', "1");
+            form.appendChild(expressCheckout);
+        }
+
+        // Creating a PayPal or PayPal express resource
+        paypalInstance.createResource()
             .then(function(result) {
                 let hiddenInput = document.createElement('input');
                 hiddenInput.setAttribute('type', 'hidden');
diff --git a/vendor/unzerdev/php-sdk/examples/PayPalRecurring/Constants.php b/vendor/unzerdev/php-sdk/examples/PayPalRecurring/Constants.php
index 68f7011..9ca9757 100644
--- a/vendor/unzerdev/php-sdk/examples/PayPalRecurring/Constants.php
+++ b/vendor/unzerdev/php-sdk/examples/PayPalRecurring/Constants.php
@@ -2,25 +2,8 @@
 /**
  * This file defines the constants needed for the PayPal example.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 require_once __DIR__ . '/../Constants.php';
diff --git a/vendor/unzerdev/php-sdk/examples/PayPalRecurring/Controller.php b/vendor/unzerdev/php-sdk/examples/PayPalRecurring/Controller.php
index 990b2e6..4b28bea 100644
--- a/vendor/unzerdev/php-sdk/examples/PayPalRecurring/Controller.php
+++ b/vendor/unzerdev/php-sdk/examples/PayPalRecurring/Controller.php
@@ -3,25 +3,8 @@
  * This is the controller for the PayPal example.
  * It is called when the pay button on the index page is clicked.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
diff --git a/vendor/unzerdev/php-sdk/examples/PayPalRecurring/ReturnController.php b/vendor/unzerdev/php-sdk/examples/PayPalRecurring/ReturnController.php
index 13beb30..14fbe87 100644
--- a/vendor/unzerdev/php-sdk/examples/PayPalRecurring/ReturnController.php
+++ b/vendor/unzerdev/php-sdk/examples/PayPalRecurring/ReturnController.php
@@ -3,25 +3,8 @@
  * This is the return controller for the PayPal recurring example.
  * It is called when the client is redirected back to the shop from the external page.
  *
- * Copyright (C) 2021 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
diff --git a/vendor/unzerdev/php-sdk/examples/PayPalRecurring/index.php b/vendor/unzerdev/php-sdk/examples/PayPalRecurring/index.php
index 3ac46e2..596034b 100644
--- a/vendor/unzerdev/php-sdk/examples/PayPalRecurring/index.php
+++ b/vendor/unzerdev/php-sdk/examples/PayPalRecurring/index.php
@@ -2,25 +2,8 @@
 /**
  * This file provides an example implementation of the PayPal payment type.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
@@ -36,8 +19,9 @@
 <head>
     <meta charset="UTF-8">
     <title>Unzer UI Examples</title>
-    <script src="https://code.jquery.com/jquery-3.5.1.min.js"
-            integrity="sha256-9/aliU8dGd2tb6OSsuzixeV4y/faTqgFtohetphbbj0=" crossorigin="anonymous"></script>
+    <script src="https://code.jquery.com/jquery-3.6.0.min.js"
+            integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4="
+            crossorigin="anonymous"></script>
 
     <link rel="stylesheet" href="https://static.unzer.com/v1/unzer.css" />
     <script type="text/javascript" src="https://static.unzer.com/v1/unzer.js"></script>
@@ -46,8 +30,8 @@
 <body style="margin: 70px 70px 0;">
 <h3>Example data:</h3>
 <ul>
-    <li>Username: paypal-customer@heidelpay.de</li>
-    <li>Password: heidelpay</li>
+    <li>Username: paypal-buyer@unzer.com</li>
+    <li>Password: unzer1234</li>
 </ul>
 <strong>Attention:</strong> We recommend to create your own PayPal test account <a href="https://developer.paypal.com" target="_blank">here</a>.
 
@@ -55,7 +39,9 @@
 
 <form id="payment-form" class="unzerUI form" novalidate>
     <div class="field" id="error-holder" style="color: #9f3a38"> </div>
-    <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    <div class="field">
+        <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    </div>
 </form>
 
 <script>
diff --git a/vendor/unzerdev/php-sdk/examples/PayU/Constants.php b/vendor/unzerdev/php-sdk/examples/PayU/Constants.php
new file mode 100644
index 0000000..e8717ed
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/examples/PayU/Constants.php
@@ -0,0 +1,13 @@
+<?php
+
+/**
+ * This file defines the constants needed for the PayU example.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+
+require_once __DIR__ . '/../Constants.php';
+
+define('EXAMPLE_URL', EXAMPLE_BASE_FOLDER . 'PayU');
+define('CONTROLLER_URL', EXAMPLE_URL . '/Controller.php');
diff --git a/vendor/unzerdev/php-sdk/examples/PayU/Controller.php b/vendor/unzerdev/php-sdk/examples/PayU/Controller.php
new file mode 100644
index 0000000..18e9fdf
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/examples/PayU/Controller.php
@@ -0,0 +1,68 @@
+<?php
+/**
+ * This is the controller for the PayU example.
+ * It is called when the pay button on the index page is clicked.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+
+/** Require the constants of this example */
+require_once __DIR__ . '/Constants.php';
+
+/** @noinspection PhpIncludeInspection */
+/** Require the composer autoloader file */
+require_once __DIR__ . '/../../../../autoload.php';
+
+use UnzerSDK\examples\ExampleDebugHandler;
+use UnzerSDK\Exceptions\UnzerApiException;
+use UnzerSDK\Unzer;
+
+session_start();
+session_unset();
+
+$clientMessage = 'Something went wrong. Please try again later.';
+$merchantMessage = 'Something went wrong. Please try again later.';
+
+function redirect($url, $merchantMessage = '', $clientMessage = '')
+{
+    $_SESSION['merchantMessage'] = $merchantMessage;
+    $_SESSION['clientMessage']   = $clientMessage;
+    header('Location: ' . $url);
+    die();
+}
+
+// You will need the id of the payment type created in the frontend (index.php)
+if (!isset($_POST['resourceId'])) {
+    redirect(FAILURE_URL, 'Resource id is missing!', $clientMessage);
+}
+$paymentTypeId   = $_POST['resourceId'];
+
+// Catch API errors, write the message to your log and show the ClientMessage to the client.
+try {
+    // Create an Unzer object using your private key and register a debug handler if you want to.
+    $unzer = new Unzer(UNZER_PAPI_PRIVATE_KEY);
+    $unzer->setDebugMode(true)->setDebugHandler(new ExampleDebugHandler());
+
+    // Create a charge transaction to get the redirectUrl.
+    $transaction = new \UnzerSDK\Resources\TransactionTypes\Charge(12.32, 'PLN', RETURN_CONTROLLER_URL);
+    $unzer->performCharge($transaction, $paymentTypeId);
+
+    // You'll need to remember the paymentId for later in the ReturnController
+    $_SESSION['PaymentId'] = $transaction->getPaymentId();
+    $_SESSION['ShortId']   = $transaction->getShortId();
+
+    // Redirect to the PayU page
+    if (!$transaction->isError() && $transaction->getRedirectUrl() !== null) {
+        redirect($transaction->getRedirectUrl());
+    }
+
+    // Check the result message of the charge to find out what went wrong.
+    $merchantMessage = $transaction->getMessage()->getCustomer();
+} catch (UnzerApiException $e) {
+    $merchantMessage = $e->getMerchantMessage();
+    $clientMessage = $e->getClientMessage();
+} catch (RuntimeException $e) {
+    $merchantMessage = $e->getMessage();
+}
+redirect(FAILURE_URL, $merchantMessage, $clientMessage);
diff --git a/vendor/unzerdev/php-sdk/examples/PayU/index.php b/vendor/unzerdev/php-sdk/examples/PayU/index.php
new file mode 100644
index 0000000..ab5072b
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/examples/PayU/index.php
@@ -0,0 +1,72 @@
+<?php
+/**
+ * This file provides an example implementation of the PayU payment type.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+
+/** Require the constants of this example */
+require_once __DIR__ . '/Constants.php';
+
+/** @noinspection PhpIncludeInspection */
+/** Require the composer autoloader file */
+require_once __DIR__ . '/../../../../autoload.php';
+?>
+
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <title>Unzer UI Examples</title>
+    <script src="https://code.jquery.com/jquery-3.6.0.min.js"
+            integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4="
+            crossorigin="anonymous"></script>
+
+    <link rel="stylesheet" href="https://static.unzer.com/v1/unzer.css" />
+    <script type="text/javascript" src="https://static.unzer.com/v1/unzer.js"></script>
+</head>
+
+<body style="margin: 70px 70px 0;">
+
+<p><a href="https://docs.unzer.com/reference/test-data" target="_blank">Click here to open our test data in new tab.</a></p>
+
+<form id="payment-form" class="unzerUI form" novalidate>
+    <div class="field" id="error-holder" style="color: #9f3a38"> </div>
+    <div class="field">
+        <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    </div>
+</form>
+
+<script>
+    // Create an Unzer instance with your public key
+    let unzerInstance = new unzer('<?php echo UNZER_PAPI_PUBLIC_KEY; ?>');
+
+    // Create an PayU instance
+    let payU = unzerInstance.PayU();
+
+    // Handle payment form submission
+    let form = document.getElementById('payment-form');
+    form.addEventListener('submit', function(event) {
+        event.preventDefault();
+        // Creating a payU resource
+        payU.createResource()
+            .then(function(result) {
+                let hiddenInput = document.createElement('input');
+                hiddenInput.setAttribute('type', 'hidden');
+                hiddenInput.setAttribute('name', 'resourceId');
+                hiddenInput.setAttribute('value', result.id);
+                form.appendChild(hiddenInput);
+                form.setAttribute('method', 'POST');
+                form.setAttribute('action', '<?php echo CONTROLLER_URL; ?>');
+
+                // Submitting the form
+                form.submit();
+            })
+            .catch(function(error) {
+                $('#error-holder').html(error.message)
+            })
+    });
+</script>
+</body>
+</html>
diff --git a/vendor/unzerdev/php-sdk/examples/PaylaterDirectDebit/Constants.php b/vendor/unzerdev/php-sdk/examples/PaylaterDirectDebit/Constants.php
new file mode 100644
index 0000000..a8a77f2
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/examples/PaylaterDirectDebit/Constants.php
@@ -0,0 +1,9 @@
+<?php
+/**
+ * This file defines the constants needed for the Paylater Direct Debit example.
+ */
+
+require_once __DIR__ . '/../Constants.php';
+
+define('EXAMPLE_URL', EXAMPLE_BASE_FOLDER . 'PaylaterDirectDebit');
+define('CONTROLLER_URL', EXAMPLE_URL . '/Controller.php');
diff --git a/vendor/unzerdev/php-sdk/examples/PaylaterDirectDebit/Controller.php b/vendor/unzerdev/php-sdk/examples/PaylaterDirectDebit/Controller.php
new file mode 100644
index 0000000..59a6d1f
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/examples/PaylaterDirectDebit/Controller.php
@@ -0,0 +1,129 @@
+<?php
+
+/**
+ * This is the controller for the Paylater Direct Debit example.
+ * It is called when the pay button on the index page is clicked.
+ */
+
+/** Require the constants of this example */
+require_once __DIR__ . '/Constants.php';
+
+/** @noinspection PhpIncludeInspection */
+/** Require the composer autoloader file */
+require_once __DIR__ . '/../../../../autoload.php';
+
+use UnzerSDK\Constants\CustomerGroups;
+use UnzerSDK\Constants\CustomerRegistrationLevel;
+use UnzerSDK\examples\ExampleDebugHandler;
+use UnzerSDK\Exceptions\UnzerApiException;
+use UnzerSDK\Resources\Basket;
+use UnzerSDK\Resources\CustomerFactory;
+use UnzerSDK\Resources\EmbeddedResources\Address;
+use UnzerSDK\Resources\EmbeddedResources\BasketItem;
+use UnzerSDK\Resources\EmbeddedResources\RiskData;
+use UnzerSDK\Resources\PaymentTypes\PaylaterDirectDebit;
+use UnzerSDK\Resources\TransactionTypes\Authorization;
+use UnzerSDK\Unzer;
+
+session_start();
+session_unset();
+
+$clientMessage = 'Something went wrong. Please try again later.';
+$merchantMessage = 'Something went wrong. Please try again later.';
+
+function redirect($url, $merchantMessage = '', $clientMessage = '')
+{
+    $_SESSION['merchantMessage'] = $merchantMessage;
+    $_SESSION['clientMessage'] = $clientMessage;
+    header('Location: ' . $url);
+    die();
+}
+
+// You will need the id of the payment type created in the frontend (index.php)
+if (!isset($_POST['paymentTypeId'])) {
+    redirect(FAILURE_URL, 'Payment type id is missing!', $clientMessage);
+}
+
+$paymentTypeId = $_POST['paymentTypeId'];
+$threatMetrixId = $_POST['threatMetrixId'];
+$orderAmount = 99.99;
+
+// Catch API errors, write the message to your log and show the ClientMessage to the client.
+/** @noinspection BadExceptionsProcessingInspection */
+try {
+    // Create an Unzer object using your private key and register a debug handler if you want to.
+    $unzer = new Unzer(UNZER_PAPI_PRIVATE_KEY);
+    $unzer->setDebugMode(true)->setDebugHandler(new ExampleDebugHandler());
+
+    // Use the quote or order id from your shop
+    $orderId = 'o' . str_replace(['0.', ' '], '', microtime(false));
+
+    /** @var PaylaterDirectDebit $paymentType */
+    $paymentType = $unzer->fetchPaymentType($paymentTypeId);
+
+    // A customer with matching addresses is mandatory for Direct Debit payment type
+    $address = (new Address())
+        ->setName('Linda Heideich')
+        ->setStreet('Vangerowstr. 18')
+        ->setCity('Heidelberg')
+        ->setZip('69155')
+        ->setCountry('DE');
+    $customer = CustomerFactory::createCustomer('Linda', 'Heideich')
+        ->setBirthDate('2000-02-12')
+        ->setBillingAddress($address)
+        ->setShippingAddress($address)
+        ->setEmail('linda.heideich@test.de');
+
+    // A Basket is mandatory for Paylater Direct Debit payment type
+    $basketItem = (new BasketItem())
+        ->setAmountPerUnitGross($orderAmount)
+        ->setVat(19)
+        ->setQuantity(1)
+        ->setBasketItemReferenceId('item1')
+        ->setTitle('Hat');
+
+    $currency = 'EUR';
+    $basket = new Basket($orderId);
+    $basket->setTotalValueGross($orderAmount)
+        ->addBasketItem($basketItem)
+        ->setCurrencyCode($currency);
+
+    $riskData = (new RiskData())
+        ->setThreatMetrixId($threatMetrixId)
+        ->setCustomerGroup(CustomerGroups::GOOD)
+        ->setConfirmedAmount(99.99)
+        ->setConfirmedOrders(2)
+        ->setRegistrationLevel(CustomerRegistrationLevel::REGISTERED)
+        ->setRegistrationDate('20160412');
+
+    // initialize the payment
+    $authorize = (new Authorization($orderAmount, $currency, RETURN_CONTROLLER_URL))
+        ->setRiskData($riskData);
+
+    $unzer->performAuthorization(
+        $authorize,
+        $paymentType,
+        $customer,
+        null,
+        $basket
+    );
+
+    // You'll need to remember the shortId to show it on the success or failure page
+    $_SESSION['PaymentId'] = $authorize->getPaymentId();
+    $_SESSION['ShortId'] = $authorize->getShortId();
+    $_SESSION['additionalPaymentInformation'] = sprintf("Descriptor: %s", $authorize->getDescriptor());
+
+    // Redirect to the success or failure depending on the state of the transaction
+    if ($authorize->isSuccess()) {
+        redirect(SUCCESS_URL);
+    }
+
+    // Check the result message of the transaction to find out what went wrong.
+    $merchantMessage = $authorize->getMessage()->getCustomer();
+} catch (UnzerApiException $e) {
+    $merchantMessage = $e->getMerchantMessage();
+    $clientMessage = $e->getClientMessage();
+} catch (RuntimeException $e) {
+    $merchantMessage = $e->getMessage();
+}
+redirect(FAILURE_URL, $merchantMessage, $clientMessage);
diff --git a/vendor/unzerdev/php-sdk/examples/PaylaterDirectDebit/index.php b/vendor/unzerdev/php-sdk/examples/PaylaterDirectDebit/index.php
new file mode 100644
index 0000000..430c412
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/examples/PaylaterDirectDebit/index.php
@@ -0,0 +1,109 @@
+<?php
+
+/**
+ * This file provides an example implementation of the Paylater Direct Debit payment type.
+ */
+
+/** Require the constants of this example */
+require_once __DIR__ . '/Constants.php';
+
+/** @noinspection PhpIncludeInspection */
+/** Require the composer autoloader file */
+require_once __DIR__ . '/../../../../autoload.php';
+?>
+
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8"/>
+    <title>Unzer UI Examples</title>
+    <script src="https://code.jquery.com/jquery-3.6.0.min.js"
+            integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4="
+            crossorigin="anonymous"></script>
+
+    <link rel="stylesheet" href="https://static.unzer.com/v1/unzer.css"/>
+    <script type="text/javascript" src="https://static.unzer.com/v1/unzer.js"></script>
+</head>
+
+<body style="margin: 70px 70px 0;">
+
+<p><a href="https://docs.unzer.com/reference/test-data" target="_blank">Click here to open our test data in new tab.</a><br/>
+</p>
+
+<div id="dimmer-holder-pdd" class="ui active dimmer" style="display: none;">
+    <div class="ui loader"></div>
+</div>
+<form id="payment-form-paylater-direct-debit" class="unzerUI form" novalidate>
+    <div id="example-pdd" class="field"></div>
+
+    <div id="error-holder-pdd" class="field" style="color: #9f3a38"></div>
+
+    <div class="field">
+        <button class="unzerUI primary button fluid" disabled type="submit">Pay</button>
+    </div>
+</form>
+
+<script>
+    // Create an Unzer instance with your public key
+    let unzerInstance = new unzer('<?php echo UNZER_PAPI_PUBLIC_KEY; ?>');
+    let paylaterDirectDebit = unzerInstance.PaylaterDirectDebit();
+
+    // Just for example purpose. Make sure to generate a unique ID.
+    let threatMetrixId = 'php-sdk-example_' + Date.now();
+
+    paylaterDirectDebit.create('paylater-direct-debit', {
+        containerId: 'example-pdd',
+        threatMetrixId: threatMetrixId
+    });
+
+    var hpDimmer = document.getElementById('pit-dimmer-holder')
+    var continueButton = document.getElementById('continue-button')
+    var form = document.getElementById('payment-form-paylater-direct-debit')
+
+    var buttonDisabled = true
+
+    var eventHandlerSepaInput = function (e) {
+        if (e.success) {
+            buttonDisabled = false
+        } else {
+            buttonDisabled = true
+        }
+        if (!buttonDisabled) {
+            $('button[type="submit"]').removeAttr('disabled');
+        } else {
+            $('button[type="submit"]').attr('disabled', 'disabled');
+        }
+    }
+
+    paylaterDirectDebit.addEventListener('change', eventHandlerSepaInput);
+
+
+    // Handling the form's submission.
+    form.addEventListener('submit', function (event) {
+        event.preventDefault();
+        paylaterDirectDebit.createResource()
+            .then(function (data) {
+                let hiddenInput = document.createElement('input');
+                hiddenInput.setAttribute('type', 'hidden');
+                hiddenInput.setAttribute('name', 'paymentTypeId');
+                hiddenInput.setAttribute('value', data.id);
+                form.appendChild(hiddenInput);
+
+                let threatMetrixIdInput = document.createElement('input');
+                threatMetrixIdInput.setAttribute('type', 'hidden');
+                threatMetrixIdInput.setAttribute('name', 'threatMetrixId');
+                threatMetrixIdInput.setAttribute('value', threatMetrixId);
+                form.appendChild(threatMetrixIdInput);
+
+                form.setAttribute('method', 'POST');
+                form.setAttribute('action', '<?php echo CONTROLLER_URL; ?>');
+                form.submit();
+            })
+            .catch(function (error) {
+                $('#error-holder').html(error.message)
+            });
+    });
+</script>
+
+</body>
+</html>
diff --git a/vendor/unzerdev/php-sdk/examples/PaylaterInstallment/Constants.php b/vendor/unzerdev/php-sdk/examples/PaylaterInstallment/Constants.php
new file mode 100644
index 0000000..dd238d2
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/examples/PaylaterInstallment/Constants.php
@@ -0,0 +1,12 @@
+<?php
+/**
+ * This file defines the constants needed for the Paylater Installment example.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+
+require_once __DIR__ . '/../Constants.php';
+
+define('EXAMPLE_URL', EXAMPLE_BASE_FOLDER . 'PaylaterInstallment');
+define('CONTROLLER_URL', EXAMPLE_URL . '/Controller.php');
diff --git a/vendor/unzerdev/php-sdk/examples/PaylaterInstallment/Controller.php b/vendor/unzerdev/php-sdk/examples/PaylaterInstallment/Controller.php
new file mode 100644
index 0000000..4f0b583
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/examples/PaylaterInstallment/Controller.php
@@ -0,0 +1,134 @@
+<?php
+/**
+ * This is the controller for the Paylater Installment example.
+ * It is called when the pay button on the index page is clicked.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+
+/** Require the constants of this example */
+require_once __DIR__ . '/Constants.php';
+
+/** @noinspection PhpIncludeInspection */
+/** Require the composer autoloader file */
+require_once __DIR__ . '/../../../../autoload.php';
+
+use UnzerSDK\Constants\CustomerGroups;
+use UnzerSDK\Constants\CustomerRegistrationLevel;
+use UnzerSDK\examples\ExampleDebugHandler;
+use UnzerSDK\Exceptions\UnzerApiException;
+use UnzerSDK\Resources\Basket;
+use UnzerSDK\Resources\CustomerFactory;
+use UnzerSDK\Resources\EmbeddedResources\Address;
+use UnzerSDK\Resources\EmbeddedResources\BasketItem;
+use UnzerSDK\Resources\EmbeddedResources\RiskData;
+use UnzerSDK\Resources\TransactionTypes\Authorization;
+use UnzerSDK\Unzer;
+
+session_start();
+session_unset();
+
+$clientMessage = 'Something went wrong. Please try again later.';
+$merchantMessage = 'Something went wrong. Please try again later.';
+
+function redirect($url, $merchantMessage = '', $clientMessage = '')
+{
+    $_SESSION['merchantMessage'] = $merchantMessage;
+    $_SESSION['clientMessage'] = $clientMessage;
+    header('Location: ' . $url);
+    die();
+}
+
+// You will need the id of the payment type created in the frontend (index.php)
+if (!isset($_POST['paymentTypeId'])) {
+    redirect(FAILURE_URL, 'Payment type id is missing!', $clientMessage);
+}
+
+if (!isset($_POST['orderAmount'])) {
+    redirect(FAILURE_URL, 'No order amount is provided!', $clientMessage);
+}
+
+$paymentTypeId = $_POST['paymentTypeId'];
+$orderAmount = $_POST['orderAmount'];
+$threatMetrixId = $_POST['threatMetrixId'];
+
+// Catch API errors, write the message to your log and show the ClientMessage to the client.
+/** @noinspection BadExceptionsProcessingInspection */
+try {
+    // Create an Unzer object using your private key and register a debug handler if you want to.
+    $unzer = new Unzer(UNZER_PAPI_PRIVATE_KEY);
+    $unzer->setDebugMode(true)->setDebugHandler(new ExampleDebugHandler());
+
+    // Use the quote or order id from your shop
+    $orderId = 'o' . str_replace(['0.', ' '], '', microtime(false));
+
+    /** @var \UnzerSDK\Resources\PaymentTypes\PaylaterInstallment $paymentType */
+    $paymentType = $unzer->fetchPaymentType($paymentTypeId);
+
+    // A customer with matching addresses is mandatory for Installment payment type
+    $address = (new Address())
+        ->setName('Linda Heideich')
+        ->setStreet('Vangerowstr. 18')
+        ->setCity('Heidelberg')
+        ->setZip('69155')
+        ->setCountry('DE');
+    $customer = CustomerFactory::createCustomer('Linda', 'Heideich')
+        ->setBirthDate('2000-02-12')
+        ->setBillingAddress($address)
+        ->setShippingAddress($address)
+        ->setEmail('linda.heideich@test.de');
+
+    // A Basket is mandatory for Paylater Installment payment type
+    $basketItem = (new BasketItem())
+        ->setAmountPerUnitGross($orderAmount)
+        ->setVat(19)
+        ->setQuantity(1)
+        ->setBasketItemReferenceId('item1')
+        ->setTitle('Hat');
+
+    $currency = 'EUR';
+    $basket = new Basket($orderId);
+    $basket->setTotalValueGross($orderAmount)
+        ->addBasketItem($basketItem)
+        ->setCurrencyCode($currency);
+
+    $riskData = (new RiskData())
+        ->setThreatMetrixId($threatMetrixId)
+        ->setCustomerGroup(CustomerGroups::GOOD)
+        ->setConfirmedAmount(99.99)
+        ->setConfirmedOrders(2)
+        ->setRegistrationLevel(CustomerRegistrationLevel::REGISTERED)
+        ->setRegistrationDate('20160412');
+
+    // initialize the payment
+    $authorize = (new Authorization($orderAmount, $currency, RETURN_CONTROLLER_URL))
+        ->setRiskData($riskData);
+
+    $unzer->performAuthorization(
+        $authorize,
+        $paymentType,
+        $customer,
+        null,
+        $basket
+    );
+
+    // You'll need to remember the shortId to show it on the success or failure page
+    $_SESSION['PaymentId'] = $authorize->getPaymentId();
+    $_SESSION['ShortId'] = $authorize->getShortId();
+    $_SESSION['additionalPaymentInformation'] = sprintf("Descriptor: %s", $authorize->getDescriptor());
+
+    // Redirect to the success or failure depending on the state of the transaction
+    if ($authorize->isSuccess()) {
+        redirect(SUCCESS_URL);
+    }
+
+    // Check the result message of the transaction to find out what went wrong.
+    $merchantMessage = $authorize->getMessage()->getCustomer();
+} catch (UnzerApiException $e) {
+    $merchantMessage = $e->getMerchantMessage();
+    $clientMessage = $e->getClientMessage();
+} catch (RuntimeException $e) {
+    $merchantMessage = $e->getMessage();
+}
+redirect(FAILURE_URL, $merchantMessage, $clientMessage);
diff --git a/vendor/unzerdev/php-sdk/examples/PaylaterInstallment/index.php b/vendor/unzerdev/php-sdk/examples/PaylaterInstallment/index.php
new file mode 100644
index 0000000..886ecae
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/examples/PaylaterInstallment/index.php
@@ -0,0 +1,136 @@
+<?php
+/**
+ * This file provides an example implementation of the Paylater Installment payment type.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+
+/** Require the constants of this example */
+require_once __DIR__ . '/Constants.php';
+
+/** @noinspection PhpIncludeInspection */
+/** Require the composer autoloader file */
+require_once __DIR__ . '/../../../../autoload.php';
+?>
+
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8"/>
+    <title>Unzer UI Examples</title>
+    <script src="https://code.jquery.com/jquery-3.6.0.min.js"
+            integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4="
+            crossorigin="anonymous"></script>
+
+    <link rel="stylesheet" href="https://static.unzer.com/v1/unzer.css"/>
+    <script type="text/javascript" src="https://static.unzer.com/v1/unzer.js"></script>
+</head>
+
+<body style="margin: 70px 70px 0;">
+
+<p><a href="https://docs.unzer.com/reference/test-data" target="_blank">Click here to open our test data in new tab.</a><br/>
+</p>
+
+<form id="payment-form-paylater-installment" class="unzerUI form unzerUI-paylater-installment__form" novalidate>
+    <div id="pit-dimmer-holder" class="ui active dimmer" style="display: block">
+        <div class="ui loader"></div>
+    </div>
+
+    <div id="example-paylater-installment"></div>
+    <div id="error-holder" class="field" style="color: #d0021b"></div>
+
+    <button id="continue-button" class="unzerUI primary button fluid" type="submit" style="display: none">
+        Continue
+    </button>
+</form>
+
+<script>
+    // Create an Unzer instance with your public key
+    let unzerInstance = new unzer('<?php echo UNZER_PAPI_PUBLIC_KEY; ?>');
+    let paylaterInstallment = unzerInstance.PaylaterInstallment();
+
+    var hpDimmer = document.getElementById('pit-dimmer-holder')
+    var continueButton = document.getElementById('continue-button')
+    var form = document.getElementById('payment-form-paylater-installment')
+
+    paylaterInstallment.addEventListener('paylaterInstallmentEvent', function (e) {
+        switch (e.currentStep) {
+            case 'plan-list':
+                continueButton.setAttribute('style', 'display: none')
+                $('#error-holder').html('')
+                break;
+
+            case 'plan-detail':
+                continueButton.setAttribute('style', 'display: block')
+                $('#error-holder').html('')
+                break;
+
+            default:
+                break;
+        }
+
+        if (e.action === 'validate' && e.success) {
+            continueButton.removeAttribute('disabled')
+        } else if (e.action === 'validate' && !e.success) {
+            continueButton.setAttribute('disabled', true)
+        }
+    })
+
+    let orderAmount = "99.99";
+
+    // Just for example purpose. Make sure to generate a unique ID.
+    let threatMetrixId = 'php-sdk-example_' + Date.now();
+
+    paylaterInstallment.create({
+        containerId: 'example-paylater-installment',
+        amount: orderAmount,
+        currency: 'EUR', // 'CHF'
+        country: 'DE', // 'AT', 'CH'
+        customerType: 'B2C', // 'B2B'
+        threatMetrixId: threatMetrixId
+    })
+        .then(function (data) {
+            hpDimmer.setAttribute('style', 'display: none')
+        })
+        .catch(function (error) {
+            console.log('create error', error)
+            hpDimmer.setAttribute('style', 'display: none')
+            $('#error-holder').html(error.customerMessage || error.message || 'Error')
+        })
+
+    // Handling the form's submission.
+    form.addEventListener('submit', function (event) {
+        event.preventDefault();
+        paylaterInstallment.createResource()
+            .then(function (data) {
+                let hiddenInput = document.createElement('input');
+                hiddenInput.setAttribute('type', 'hidden');
+                hiddenInput.setAttribute('name', 'paymentTypeId');
+                hiddenInput.setAttribute('value', data.id);
+                form.appendChild(hiddenInput);
+
+                let amountInput = document.createElement('input');
+                amountInput.setAttribute('type', 'hidden');
+                amountInput.setAttribute('name', 'orderAmount');
+                amountInput.setAttribute('value', orderAmount);
+                form.appendChild(amountInput);
+
+                let threatMetrixIdInput = document.createElement('input');
+                threatMetrixIdInput.setAttribute('type', 'hidden');
+                threatMetrixIdInput.setAttribute('name', 'threatMetrixId');
+                threatMetrixIdInput.setAttribute('value', threatMetrixId);
+                form.appendChild(threatMetrixIdInput);
+
+                form.setAttribute('method', 'POST');
+                form.setAttribute('action', '<?php echo CONTROLLER_URL; ?>');
+                form.submit();
+            })
+            .catch(function (error) {
+                $('#error-holder').html(error.message)
+            });
+    });
+</script>
+
+</body>
+</html>
diff --git a/vendor/unzerdev/php-sdk/examples/PaylaterInvoice/Constants.php b/vendor/unzerdev/php-sdk/examples/PaylaterInvoice/Constants.php
new file mode 100644
index 0000000..5bad530
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/examples/PaylaterInvoice/Constants.php
@@ -0,0 +1,12 @@
+<?php
+/**
+ * This file defines the constants needed for the Paylater Invoice example.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+
+require_once __DIR__ . '/../Constants.php';
+
+define('EXAMPLE_URL', EXAMPLE_BASE_FOLDER . 'PaylaterInvoice');
+define('CONTROLLER_URL', EXAMPLE_URL . '/Controller.php');
diff --git a/vendor/unzerdev/php-sdk/examples/PaylaterInvoice/Controller.php b/vendor/unzerdev/php-sdk/examples/PaylaterInvoice/Controller.php
new file mode 100644
index 0000000..9d1f950
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/examples/PaylaterInvoice/Controller.php
@@ -0,0 +1,118 @@
+<?php
+/**
+ * This is the controller for the Paylater Invoice example.
+ * It is called when the pay button on the index page is clicked.
+ *
+ * @link     https://docs.unzer.com/
+ *
+ */
+
+/** Require the constants of this example */
+require_once __DIR__ . '/Constants.php';
+
+/** @noinspection PhpIncludeInspection */
+/** Require the composer autoloader file */
+require_once __DIR__ . '/../../../../autoload.php';
+
+use UnzerSDK\Constants\CustomerGroups;
+use UnzerSDK\Constants\CustomerRegistrationLevel;
+use UnzerSDK\examples\ExampleDebugHandler;
+use UnzerSDK\Exceptions\UnzerApiException;
+use UnzerSDK\Resources\EmbeddedResources\RiskData;
+use UnzerSDK\Unzer;
+use UnzerSDK\Resources\Basket;
+use UnzerSDK\Resources\EmbeddedResources\BasketItem;
+use UnzerSDK\Resources\TransactionTypes\Authorization;
+
+session_start();
+session_unset();
+
+$clientMessage = 'Something went wrong. Please try again later.';
+$merchantMessage = 'Something went wrong. Please try again later.';
+
+function redirect($url, $merchantMessage = '', $clientMessage = '')
+{
+    $_SESSION['merchantMessage'] = $merchantMessage;
+    $_SESSION['clientMessage'] = $clientMessage;
+    header('Location: ' . $url);
+    die();
+}
+
+// You will need the id of the payment type created in the frontend (index.php)
+if (!isset($_POST['paymentTypeId'], $_POST['customerId'])) {
+    redirect(FAILURE_URL, 'Resource id is missing!', $clientMessage);
+}
+
+$paymentTypeId = $_POST['paymentTypeId'];
+$customerId = $_POST['customerId'];
+$threatMetrixId = $_POST['threatMetrixId'];
+
+// Catch API errors, write the message to your log and show the ClientMessage to the client.
+try {
+    // Create an Unzer object using your private key and register a debug handler if you want to.
+    $unzer = new Unzer(UNZER_PAPI_PRIVATE_KEY);
+    $unzer->setDebugMode(true)->setDebugHandler(new ExampleDebugHandler());
+
+    $orderId = 'o' . str_replace(['0.', ' '], '', microtime(false));
+
+    // A Basket is mandatory for Invoice Secured payment type
+    $basketItem = (new BasketItem())
+        ->setAmountPerUnitGross(119.00)
+        ->setVat(19.00)
+        ->setQuantity(1)
+        ->setBasketItemReferenceId('item1')
+        ->setTitle('Hat');
+
+    $basket = new Basket($orderId);
+    $basket->setTotalValueGross(119.00)
+        ->addBasketItem($basketItem)
+        ->setCurrencyCode('EUR')
+        ->setOrderId($orderId);
+
+    $riskData = (new RiskData())
+        ->setThreatMetrixId($threatMetrixId)
+        ->setCustomerGroup(CustomerGroups::GOOD)
+        ->setConfirmedAmount(99.99)
+        ->setConfirmedOrders(2)
+        ->setRegistrationLevel(CustomerRegistrationLevel::REGISTERED)
+        ->setRegistrationDate('20160412');
+
+    $authorization = (new Authorization(119.00, 'EUR', CONTROLLER_URL))
+        ->setRiskData($riskData);
+
+    $paymentType = $unzer->fetchPaymentType($paymentTypeId);
+
+    $transaction = $unzer->performAuthorization($authorization, $paymentType, $customerId, null, $basket);
+
+    // You'll need to remember the shortId to show it on the success or failure page
+    $_SESSION['ShortId'] = $transaction->getShortId();
+    $_SESSION['PaymentId'] = $transaction->getPaymentId();
+    $_SESSION['isAuthorizeTransaction'] = true;
+    $_SESSION['additionalPaymentInformation'] =
+        sprintf(
+            "Please transfer the amount of %f %s to the following account:<br /><br />"
+            . "Holder: %s<br/>"
+            . "IBAN: %s<br/>"
+            . "BIC: %s<br/><br/>"
+            . "<i>Please use only this identification number as the descriptor: </i><br/>"
+            . "%s",
+            $transaction->getAmount(),
+            $transaction->getCurrency(),
+            $transaction->getHolder(),
+            $transaction->getIban(),
+            $transaction->getBic(),
+            $transaction->getDescriptor()
+        );
+
+    // To avoid redundant code this example redirects to the general ReturnController which contains the code example to handle payment results.
+    redirect(RETURN_CONTROLLER_URL);
+
+} catch (UnzerApiException $e) {
+    $merchantMessage = $e->getMerchantMessage();
+    $clientMessage = $e->getClientMessage();
+} catch (RuntimeException $e) {
+    $merchantMessage = $e->getMessage();
+}
+// Write the merchant message to your log.
+// Show the client message to the customer (it is localized).
+redirect(FAILURE_URL, $merchantMessage, $clientMessage);
diff --git a/vendor/unzerdev/php-sdk/examples/PaylaterInvoice/index.php b/vendor/unzerdev/php-sdk/examples/PaylaterInvoice/index.php
new file mode 100644
index 0000000..c00162c
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/examples/PaylaterInvoice/index.php
@@ -0,0 +1,142 @@
+<?php
+/**
+ * This file provides an example implementation of the Paylater Invoice payment type.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+
+/** Require the constants of this example */
+require_once __DIR__ . '/Constants.php';
+
+/** @noinspection PhpIncludeInspection */
+
+/** Require the composer autoloader file */
+require_once __DIR__ . '/../../../../autoload.php';
+?>
+
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <title>Unzer UI Examples</title>
+    <script src="https://code.jquery.com/jquery-3.6.0.min.js"
+            integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4="
+            crossorigin="anonymous"></script>
+
+    <link rel="stylesheet" href="https://static.unzer.com/v1/unzer.css" />
+    <script type="text/javascript" src="https://static.unzer.com/v1/unzer.js"></script>
+</head>
+
+<body style="margin: 70px 70px 0;">
+
+<p><a href="https://docs.unzer.com/reference/test-data" target="_blank">Click here to open our test data in new tab.</a></p>
+
+<form id="payment-form" class="unzerUI form">
+    <div id="customer" class="field">
+        <!-- The customer form UI element will be inserted here -->
+    </div>
+    <div id="example-paylater-invoice"></div>
+    <div class="field" id="error-holder" style="color: #9f3a38"></div>
+    <div class="field">
+        <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    </div>
+</form>
+
+<script>
+    // Create an Unzer instance with your public key
+    let unzerInstance = new unzer('<?php echo UNZER_PAPI_PUBLIC_KEY; ?>');
+
+    // Just for example purpose. Make sure to generate a unique ID.
+    let threatMetrixId = 'php-sdk-example_' + Date.now();
+
+    // Create an Paylater Invoice instance
+    let paylaterInvoice = unzerInstance.PaylaterInvoice();
+    paylaterInvoice.create({
+        containerId: 'example-paylater-invoice',
+        customerType: 'B2C',
+        errorHolderId: 'error-holder',
+        threatMetrixId: threatMetrixId
+    });
+
+    // Create a customer instance and render the customer form
+    let Customer = unzerInstance.Customer();
+    Customer.create({
+        containerId: 'customer',
+        differentBillingAddress: true,
+        horizontalDivider: true,
+        errorHolderId: 'error-holder',
+        paymentTypeName: 'paylater-invoice'
+    });
+
+    // Handle payment form submission.
+    let form = document.getElementById('payment-form');
+    let payButton = document.getElementById("submit-button");
+    payButton.disabled = true;
+
+    let isValidCustomer = false;
+    let isValidResource = false;
+    paylaterInvoice.addEventListener('change', function eventHandlerResource(e) {
+        if (e.success) {
+            isValidResource = true;
+            if (isValidCustomer) {
+                $('button[type="submit"]').removeAttr('disabled');
+            }
+        } else {
+            isValidResource = false;
+            $('button[type="submit"]').attr('disabled', 'disabled');
+        }
+    })
+
+    Customer.addEventListener('validate', function eventHandlerCustomer(e) {
+        if (e.success) {
+            isValidCustomer = true;
+            if (isValidResource) {
+                $('button[type="submit"]').removeAttr('disabled');
+            }
+        } else {
+            $('button[type="submit"]').attr('disabled', 'disabled');
+            isValidCustomer = false;
+        }
+    })
+
+    form.addEventListener('submit', function(event) {
+        event.preventDefault();
+        let paylaterInvoicePromise = paylaterInvoice.createResource();
+        let customerPromise = Customer.createCustomer();
+        Promise.all([paylaterInvoicePromise, customerPromise])
+            .then(function(values) {
+                let paymentType = values[0];
+                let customer = values[1];
+                let hiddenInputPaymentTypeId = document.createElement('input');
+                hiddenInputPaymentTypeId.setAttribute('type', 'hidden');
+                hiddenInputPaymentTypeId.setAttribute('name', 'paymentTypeId');
+                hiddenInputPaymentTypeId.setAttribute('value', paymentType.id);
+                form.appendChild(hiddenInputPaymentTypeId);
+
+                let hiddenInputCustomerId = document.createElement('input');
+                hiddenInputCustomerId.setAttribute('type', 'hidden');
+                hiddenInputCustomerId.setAttribute('name', 'customerId');
+                hiddenInputCustomerId.setAttribute('value', customer.id);
+                form.appendChild(hiddenInputCustomerId);
+
+                let threatMetrixIdInput = document.createElement('input');
+                threatMetrixIdInput.setAttribute('type', 'hidden');
+                threatMetrixIdInput.setAttribute('name', 'threatMetrixId');
+                threatMetrixIdInput.setAttribute('value', threatMetrixId);
+                form.appendChild(threatMetrixIdInput);
+
+                form.setAttribute('method', 'POST');
+                form.setAttribute('action', '<?php echo CONTROLLER_URL; ?>');
+
+                // Submitting the form
+                form.submit();
+            })
+            .catch(function(error) {
+                $('#error-holder').html(error.customerMessage || error.message || 'Error')
+            })
+    });
+</script>
+
+</body>
+</html>
diff --git a/vendor/unzerdev/php-sdk/examples/Pending.php b/vendor/unzerdev/php-sdk/examples/Pending.php
index 4e5f41d..311a19c 100644
--- a/vendor/unzerdev/php-sdk/examples/Pending.php
+++ b/vendor/unzerdev/php-sdk/examples/Pending.php
@@ -2,25 +2,8 @@
 /**
  * This is the pending page for the example payments.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 session_start();
@@ -28,25 +11,33 @@
 
 <!DOCTYPE html>
 <html lang="en">
-    <body>
-        <h1 id="result">Pending</h1>
-        <p>
-            The payment transaction has been completed, however it has the state pending.<br>
-            The status of the payment is not definite at the moment.<br>
-            You can create the Order in your shop but should set its status to <i>pending payment</i>.
-        </p>
-        <p>
-            Please use the webhook feature to be informed about later changes of the payment.
-            You should ship only if the status changes to success.
-            <?php
-            if (isset($_SESSION['ShortId']) && !empty($_SESSION['ShortId'])) {
-                echo '<p>Please look for ShortId ' . $_SESSION['ShortId'] . ' in Unzer Insights to see the transaction.</p>';
-            }
-            if (isset($_SESSION['PaymentId']) && !empty($_SESSION['PaymentId'])) {
-                echo '<p>The PaymentId of your transaction is \'' . $_SESSION['PaymentId'] . '\'.</p>';
-            }
-            ?>
-        </p>
-        <p><a href=".">start again</a></p>
-    </body>
+<head>
+    <script src="https://code.jquery.com/jquery-3.6.0.min.js"
+            integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4=" crossorigin="anonymous"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/semantic-ui/2.4.1/semantic.min.js"></script>
+    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/semantic-ui/2.4.1/semantic.min.css"/>
+</head>
+<body style="margin: 30px 70px 0;">
+<div class="ui container segment spaced">
+    <h1 id="result" class="ui header">Pending</h1>
+    <p>
+        The payment transaction has been completed, however it has the state pending.<br>
+        The status of the payment is not definite at the moment.<br>
+        You can create the Order in your shop but should set its status to <i>pending payment</i>.
+    </p>
+    <p>
+        Please use the webhook feature to be informed about later changes of the payment.
+        You should ship only if the status changes to success.
+        <?php
+        if (isset($_SESSION['ShortId']) && !empty($_SESSION['ShortId'])) {
+            echo '<p>Please look for ShortId ' . $_SESSION['ShortId'] . ' in Unzer Insights to see the transaction.</p>';
+        }
+        if (isset($_SESSION['PaymentId']) && !empty($_SESSION['PaymentId'])) {
+            echo '<p>The PaymentId of your transaction is \'' . $_SESSION['PaymentId'] . '\'.</p>';
+        }
+        ?>
+    </p>
+    <a href="." class="ui green button">start again</a>
+</div>
+</body>
 </html>
diff --git a/vendor/unzerdev/php-sdk/examples/PostFinanceCard/Constants.php b/vendor/unzerdev/php-sdk/examples/PostFinanceCard/Constants.php
new file mode 100644
index 0000000..36f6f97
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/examples/PostFinanceCard/Constants.php
@@ -0,0 +1,13 @@
+<?php
+
+/**
+ * This file defines the constants needed for the PostFinanceCard example.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+
+require_once __DIR__ . '/../Constants.php';
+
+define('EXAMPLE_URL', EXAMPLE_BASE_FOLDER . 'PostFinanceCard');
+define('CONTROLLER_URL', EXAMPLE_URL . '/Controller.php');
diff --git a/vendor/unzerdev/php-sdk/examples/PostFinanceCard/Controller.php b/vendor/unzerdev/php-sdk/examples/PostFinanceCard/Controller.php
new file mode 100644
index 0000000..c575b47
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/examples/PostFinanceCard/Controller.php
@@ -0,0 +1,68 @@
+<?php
+/**
+ * This is the controller for the PostFinanceCard example.
+ * It is called when the pay button on the index page is clicked.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+
+/** Require the constants of this example */
+require_once __DIR__ . '/Constants.php';
+
+/** @noinspection PhpIncludeInspection */
+/** Require the composer autoloader file */
+require_once __DIR__ . '/../../../../autoload.php';
+
+use UnzerSDK\examples\ExampleDebugHandler;
+use UnzerSDK\Exceptions\UnzerApiException;
+use UnzerSDK\Unzer;
+
+session_start();
+session_unset();
+
+$clientMessage = 'Something went wrong. Please try again later.';
+$merchantMessage = 'Something went wrong. Please try again later.';
+
+function redirect($url, $merchantMessage = '', $clientMessage = '')
+{
+    $_SESSION['merchantMessage'] = $merchantMessage;
+    $_SESSION['clientMessage']   = $clientMessage;
+    header('Location: ' . $url);
+    die();
+}
+
+// You will need the id of the payment type created in the frontend (index.php)
+if (!isset($_POST['resourceId'])) {
+    redirect(FAILURE_URL, 'Resource id is missing!', $clientMessage);
+}
+$paymentTypeId   = $_POST['resourceId'];
+
+// Catch API errors, write the message to your log and show the ClientMessage to the client.
+try {
+    // Create an Unzer object using your private key and register a debug handler if you want to.
+    $unzer = new Unzer(UNZER_PAPI_PRIVATE_KEY);
+    $unzer->setDebugMode(true)->setDebugHandler(new ExampleDebugHandler());
+
+    // Create a charge transaction to get the redirectUrl.
+    $transaction = new \UnzerSDK\Resources\TransactionTypes\Charge(12.32, 'CHF', RETURN_CONTROLLER_URL);
+    $unzer->performCharge($transaction, $paymentTypeId);
+
+    // You'll need to remember the paymentId for later in the ReturnController
+    $_SESSION['PaymentId'] = $transaction->getPaymentId();
+    $_SESSION['ShortId']   = $transaction->getShortId();
+
+    // Redirect to the PostFinance page
+    if (!$transaction->isError() && $transaction->getRedirectUrl() !== null) {
+        redirect($transaction->getRedirectUrl());
+    }
+
+    // Check the result message of the charge to find out what went wrong.
+    $merchantMessage = $transaction->getMessage()->getCustomer();
+} catch (UnzerApiException $e) {
+    $merchantMessage = $e->getMerchantMessage();
+    $clientMessage = $e->getClientMessage();
+} catch (RuntimeException $e) {
+    $merchantMessage = $e->getMessage();
+}
+redirect(FAILURE_URL, $merchantMessage, $clientMessage);
diff --git a/vendor/unzerdev/php-sdk/examples/PostFinanceCard/index.php b/vendor/unzerdev/php-sdk/examples/PostFinanceCard/index.php
new file mode 100644
index 0000000..d5cdfe1
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/examples/PostFinanceCard/index.php
@@ -0,0 +1,72 @@
+<?php
+/**
+ * This file provides an example implementation of the PostFinanceCard payment type.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+
+/** Require the constants of this example */
+require_once __DIR__ . '/Constants.php';
+
+/** @noinspection PhpIncludeInspection */
+/** Require the composer autoloader file */
+require_once __DIR__ . '/../../../../autoload.php';
+?>
+
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <title>Unzer UI Examples</title>
+    <script src="https://code.jquery.com/jquery-3.6.0.min.js"
+            integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4="
+            crossorigin="anonymous"></script>
+
+    <link rel="stylesheet" href="https://static.unzer.com/v1/unzer.css" />
+    <script type="text/javascript" src="https://static.unzer.com/v1/unzer.js"></script>
+</head>
+
+<body style="margin: 70px 70px 0;">
+
+<p><a href="https://docs.unzer.com/reference/test-data" target="_blank">Click here to open our test data in new tab.</a></p>
+
+<form id="payment-form" class="unzerUI form" novalidate>
+    <div class="field" id="error-holder" style="color: #9f3a38"> </div>
+    <div class="field">
+        <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    </div>
+</form>
+
+<script>
+    // Create an Unzer instance with your public key
+    let unzerInstance = new unzer('<?php echo UNZER_PAPI_PUBLIC_KEY; ?>');
+
+    // Create an PostFinanceCard instance
+    let postFinanceCard = unzerInstance.PostFinanceCard();
+
+    // Handle payment form submission
+    let form = document.getElementById('payment-form');
+    form.addEventListener('submit', function(event) {
+        event.preventDefault();
+        // Creating a postFinanceCard resource
+        postFinanceCard.createResource()
+            .then(function(result) {
+                let hiddenInput = document.createElement('input');
+                hiddenInput.setAttribute('type', 'hidden');
+                hiddenInput.setAttribute('name', 'resourceId');
+                hiddenInput.setAttribute('value', result.id);
+                form.appendChild(hiddenInput);
+                form.setAttribute('method', 'POST');
+                form.setAttribute('action', '<?php echo CONTROLLER_URL; ?>');
+
+                // Submitting the form
+                form.submit();
+            })
+            .catch(function(error) {
+                $('#error-holder').html(error.message)
+            })
+    });
+</script>
+</body>
+</html>
diff --git a/vendor/unzerdev/php-sdk/examples/PostFinanceEfinance/Constants.php b/vendor/unzerdev/php-sdk/examples/PostFinanceEfinance/Constants.php
new file mode 100644
index 0000000..f8fa1be
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/examples/PostFinanceEfinance/Constants.php
@@ -0,0 +1,13 @@
+<?php
+
+/**
+ * This file defines the constants needed for the PostFinanceEfinance example.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+
+require_once __DIR__ . '/../Constants.php';
+
+define('EXAMPLE_URL', EXAMPLE_BASE_FOLDER . 'PostFinanceEfinance');
+define('CONTROLLER_URL', EXAMPLE_URL . '/Controller.php');
diff --git a/vendor/unzerdev/php-sdk/examples/PostFinanceEfinance/Controller.php b/vendor/unzerdev/php-sdk/examples/PostFinanceEfinance/Controller.php
new file mode 100644
index 0000000..93d1c2e
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/examples/PostFinanceEfinance/Controller.php
@@ -0,0 +1,68 @@
+<?php
+/**
+ * This is the controller for the PostFinanceEfinance example.
+ * It is called when the pay button on the index page is clicked.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+
+/** Require the constants of this example */
+require_once __DIR__ . '/Constants.php';
+
+/** @noinspection PhpIncludeInspection */
+/** Require the composer autoloader file */
+require_once __DIR__ . '/../../../../autoload.php';
+
+use UnzerSDK\examples\ExampleDebugHandler;
+use UnzerSDK\Exceptions\UnzerApiException;
+use UnzerSDK\Unzer;
+
+session_start();
+session_unset();
+
+$clientMessage = 'Something went wrong. Please try again later.';
+$merchantMessage = 'Something went wrong. Please try again later.';
+
+function redirect($url, $merchantMessage = '', $clientMessage = '')
+{
+    $_SESSION['merchantMessage'] = $merchantMessage;
+    $_SESSION['clientMessage']   = $clientMessage;
+    header('Location: ' . $url);
+    die();
+}
+
+// You will need the id of the payment type created in the frontend (index.php)
+if (!isset($_POST['resourceId'])) {
+    redirect(FAILURE_URL, 'Resource id is missing!', $clientMessage);
+}
+$paymentTypeId   = $_POST['resourceId'];
+
+// Catch API errors, write the message to your log and show the ClientMessage to the client.
+try {
+    // Create an Unzer object using your private key and register a debug handler if you want to.
+    $unzer = new Unzer(UNZER_PAPI_PRIVATE_KEY);
+    $unzer->setDebugMode(true)->setDebugHandler(new ExampleDebugHandler());
+
+    // Create a charge transaction to get the redirectUrl.
+    $transaction = new \UnzerSDK\Resources\TransactionTypes\Charge(12.32, 'CHF', RETURN_CONTROLLER_URL);
+    $unzer->performCharge($transaction, $paymentTypeId);
+
+    // You'll need to remember the paymentId for later in the ReturnController
+    $_SESSION['PaymentId'] = $transaction->getPaymentId();
+    $_SESSION['ShortId']   = $transaction->getShortId();
+
+    // Redirect to the PostFinance page
+    if (!$transaction->isError() && $transaction->getRedirectUrl() !== null) {
+        redirect($transaction->getRedirectUrl());
+    }
+
+    // Check the result message of the charge to find out what went wrong.
+    $merchantMessage = $transaction->getMessage()->getCustomer();
+} catch (UnzerApiException $e) {
+    $merchantMessage = $e->getMerchantMessage();
+    $clientMessage = $e->getClientMessage();
+} catch (RuntimeException $e) {
+    $merchantMessage = $e->getMessage();
+}
+redirect(FAILURE_URL, $merchantMessage, $clientMessage);
diff --git a/vendor/unzerdev/php-sdk/examples/PostFinanceEfinance/index.php b/vendor/unzerdev/php-sdk/examples/PostFinanceEfinance/index.php
new file mode 100644
index 0000000..cf121b8
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/examples/PostFinanceEfinance/index.php
@@ -0,0 +1,72 @@
+<?php
+/**
+ * This file provides an example implementation of the PostFinanceEfinance payment type.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+
+/** Require the constants of this example */
+require_once __DIR__ . '/Constants.php';
+
+/** @noinspection PhpIncludeInspection */
+/** Require the composer autoloader file */
+require_once __DIR__ . '/../../../../autoload.php';
+?>
+
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <title>Unzer UI Examples</title>
+    <script src="https://code.jquery.com/jquery-3.6.0.min.js"
+            integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4="
+            crossorigin="anonymous"></script>
+
+    <link rel="stylesheet" href="https://static.unzer.com/v1/unzer.css" />
+    <script type="text/javascript" src="https://static.unzer.com/v1/unzer.js"></script>
+</head>
+
+<body style="margin: 70px 70px 0;">
+
+<p><a href="https://docs.unzer.com/reference/test-data" target="_blank">Click here to open our test data in new tab.</a></p>
+
+<form id="payment-form" class="unzerUI form" novalidate>
+    <div class="field" id="error-holder" style="color: #9f3a38"> </div>
+    <div class="field">
+        <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    </div>
+</form>
+
+<script>
+    // Create an Unzer instance with your public key
+    let unzerInstance = new unzer('<?php echo UNZER_PAPI_PUBLIC_KEY; ?>');
+
+    // Create an PostFinanceCard instance
+    let postFinanceEfinance = unzerInstance.PostFinanceEFinance();
+
+    // Handle payment form submission
+    let form = document.getElementById('payment-form');
+    form.addEventListener('submit', function(event) {
+        event.preventDefault();
+        // Creating a postFinanceCard resource
+        postFinanceEfinance.createResource()
+            .then(function(result) {
+                let hiddenInput = document.createElement('input');
+                hiddenInput.setAttribute('type', 'hidden');
+                hiddenInput.setAttribute('name', 'resourceId');
+                hiddenInput.setAttribute('value', result.id);
+                form.appendChild(hiddenInput);
+                form.setAttribute('method', 'POST');
+                form.setAttribute('action', '<?php echo CONTROLLER_URL; ?>');
+
+                // Submitting the form
+                form.submit();
+            })
+            .catch(function(error) {
+                $('#error-holder').html(error.message)
+            })
+    });
+</script>
+</body>
+</html>
diff --git a/vendor/unzerdev/php-sdk/examples/Prepayment/Constants.php b/vendor/unzerdev/php-sdk/examples/Prepayment/Constants.php
index 2900500..2f0965b 100644
--- a/vendor/unzerdev/php-sdk/examples/Prepayment/Constants.php
+++ b/vendor/unzerdev/php-sdk/examples/Prepayment/Constants.php
@@ -2,25 +2,8 @@
 /**
  * This file defines the constants needed for the Prepayment example.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 require_once __DIR__ . '/../Constants.php';
diff --git a/vendor/unzerdev/php-sdk/examples/Prepayment/Controller.php b/vendor/unzerdev/php-sdk/examples/Prepayment/Controller.php
index d5db27d..3dca705 100644
--- a/vendor/unzerdev/php-sdk/examples/Prepayment/Controller.php
+++ b/vendor/unzerdev/php-sdk/examples/Prepayment/Controller.php
@@ -3,25 +3,8 @@
  * This is the controller for the Prepayment example.
  * It is called when the pay button on the index page is clicked.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
diff --git a/vendor/unzerdev/php-sdk/examples/Prepayment/index.php b/vendor/unzerdev/php-sdk/examples/Prepayment/index.php
index 07a5785..87ea973 100644
--- a/vendor/unzerdev/php-sdk/examples/Prepayment/index.php
+++ b/vendor/unzerdev/php-sdk/examples/Prepayment/index.php
@@ -2,25 +2,8 @@
 /**
  * This file provides an example implementation of the Prepayment payment type.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
@@ -45,7 +28,9 @@
 <body style="margin: 70px 70px 0;">
 
 <form id="payment-form" action="<?php echo CONTROLLER_URL; ?>" class="unzerUI form" novalidate>
-    <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    <div class="field">
+        <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    </div>
 </form>
 
 <script>
diff --git a/vendor/unzerdev/php-sdk/examples/Przelewy24/Constants.php b/vendor/unzerdev/php-sdk/examples/Przelewy24/Constants.php
index 4b09d89..cb238dd 100644
--- a/vendor/unzerdev/php-sdk/examples/Przelewy24/Constants.php
+++ b/vendor/unzerdev/php-sdk/examples/Przelewy24/Constants.php
@@ -2,25 +2,8 @@
 /**
  * This file defines the constants needed for the Przelewy24 (P24) example.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK/examples
  */
 
 require_once __DIR__ . '/../Constants.php';
diff --git a/vendor/unzerdev/php-sdk/examples/Przelewy24/Controller.php b/vendor/unzerdev/php-sdk/examples/Przelewy24/Controller.php
index 90c186c..c410707 100644
--- a/vendor/unzerdev/php-sdk/examples/Przelewy24/Controller.php
+++ b/vendor/unzerdev/php-sdk/examples/Przelewy24/Controller.php
@@ -3,25 +3,8 @@
  * This is the controller for the Przelewy24 (P24) example.
  * It is called when the pay button on the index page is clicked.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK/examples
  */
 
 /** Require the constants of this example */
diff --git a/vendor/unzerdev/php-sdk/examples/Przelewy24/index.php b/vendor/unzerdev/php-sdk/examples/Przelewy24/index.php
index c083145..4036842 100644
--- a/vendor/unzerdev/php-sdk/examples/Przelewy24/index.php
+++ b/vendor/unzerdev/php-sdk/examples/Przelewy24/index.php
@@ -2,25 +2,8 @@
 /**
  * This file provides an example implementation of the Przelewy24 (P24) payment type.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK/examples
  */
 
 /** Require the constants of this example */
@@ -36,8 +19,9 @@
 <head>
     <meta charset="UTF-8">
     <title>Unzer UI Examples</title>
-    <script src="https://code.jquery.com/jquery-3.5.1.min.js"
-            integrity="sha256-9/aliU8dGd2tb6OSsuzixeV4y/faTqgFtohetphbbj0=" crossorigin="anonymous"></script>
+    <script src="https://code.jquery.com/jquery-3.6.0.min.js"
+            integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4="
+            crossorigin="anonymous"></script>
 
     <link rel="stylesheet" href="https://static.unzer.com/v1/unzer.css" />
     <script type="text/javascript" src="https://static.unzer.com/v1/unzer.js"></script>
@@ -50,7 +34,9 @@
 <form id="payment-form" class="unzerUI form" novalidate>
     <div id="example-przelewy24" class="field"></div>
     <div class="field" id="error-holder" style="color: #9f3a38"> </div>
-    <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    <div class="field">
+        <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    </div>
 </form>
 
 <script>
diff --git a/vendor/unzerdev/php-sdk/examples/ReturnController.php b/vendor/unzerdev/php-sdk/examples/ReturnController.php
index 0621b1f..43951c9 100644
--- a/vendor/unzerdev/php-sdk/examples/ReturnController.php
+++ b/vendor/unzerdev/php-sdk/examples/ReturnController.php
@@ -6,25 +6,8 @@
  * It is called when the client is redirected back to the shop from the external page or when the payment
  * transaction has been sent.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
@@ -56,10 +39,11 @@ function redirect($url, $merchantMessage = '', $clientMessage = '')
 
 // Retrieve the paymentId you remembered within the Controller
 if (!isset($_SESSION['PaymentId'])) {
-    redirect(FAILURE_URL, 'The payment id is missing.', $clientMessage);
+    $merchantMessage = 'The payment id is missing.';
 }
 $paymentId = $_SESSION['PaymentId'];
 
+$redirectUrl = FAILURE_URL;
 // Catch API errors, write the message to your log and show the ClientMessage to the client.
 try {
     // Create an Unzer object using your private key and register a debug handler if you want to.
@@ -70,13 +54,28 @@ function redirect($url, $merchantMessage = '', $clientMessage = '')
     $payment   = $unzer->fetchPayment($paymentId);
     $transaction = $payment->getInitialTransaction();
 
+    // Ensure that shortId is also set in case of payment pages.
+    if ($transaction !== null) {
+        $_SESSION['ShortId'] = $_SESSION['ShortId'] ?? $transaction->getShortId();
+    }
+
     if ($payment->isCompleted()) {
         // The payment process has been successful.
         // You show the success page.
         // Goods can be shipped.
-        redirect(SUCCESS_URL);
-    } elseif ($payment->isPending()) {
-        if ($transaction->isSuccess()) {
+        $redirectUrl = SUCCESS_URL;
+    }
+
+    if ($payment->isCreate()) {
+        // The payment is in create state, meaning the customer clicked the "Back to Merchant" button.
+        // The Payment page was not used for a payment yet.
+        // It is still active and could be used by the customer for the current payment.
+        $_SESSION['paypageId'] = $payment->getPayPage()->getRedirectUrl();
+        $redirectUrl = CREATE_URL;
+    }
+
+    if ($payment->isPending()) {
+        if ($transaction->isSuccess() || $transaction->isResumed()) {
             if ($transaction instanceof Authorization) {
                 // Payment is ready to be captured.
                 // Goods can be shipped later AFTER charge.
@@ -88,26 +87,26 @@ function redirect($url, $merchantMessage = '', $clientMessage = '')
             // In any case:
             // * You can show the success page.
             // * You can set order status to pending payment
-            redirect(SUCCESS_URL);
+            $redirectUrl = SUCCESS_URL;
         } elseif ($transaction->isPending()) {
+            // In cases of a redirect to an external service (e.g. 3D secure, PayPal, etc) it sometimes takes time for
+            // the payment to update it's status after redirect into shop.
+            // In this case the payment and the transaction are pending at first and change to cancel or success later.
+
+            // Use the webhooks feature to stay informed about changes of payment and transaction (e.g. cancel, success)
+            // then you can handle the states as shown above in transaction->isSuccess() branch.
+            $redirectUrl = PENDING_URL;
 
             // The initial transaction of invoice types will not change to success but stay pending.
             $paymentType = $payment->getPaymentType();
             if ($paymentType instanceof Prepayment || $paymentType->isInvoiceType()) {
                 // Awaiting payment by the customer.
                 // Goods can be shipped immediately except for Prepayment type.
-                redirect(SUCCESS_URL);
+                $redirectUrl = SUCCESS_URL;
             }
-
-            // In cases of a redirect to an external service (e.g. 3D secure, PayPal, etc) it sometimes takes time for
-            // the payment to update it's status after redirect into shop.
-            // In this case the payment and the transaction are pending at first and change to cancel or success later.
-
-            // Use the webhooks feature to stay informed about changes of payment and transaction (e.g. cancel, success)
-            // then you can handle the states as shown above in transaction->isSuccess() branch.
-            redirect(PENDING_URL);
         }
     }
+
     // If the payment is neither success nor pending something went wrong.
     // In this case do not create the order or cancel it if you already did.
     // Redirect to an error page in your shop and show a message if you want.
@@ -119,11 +118,11 @@ function redirect($url, $merchantMessage = '', $clientMessage = '')
         $clientMessage = $transaction->getMessage()->getCustomer();
     }
 } catch (UnzerApiException $e) {
+    // Write the merchant message to your log.
+    // Show the client message to the customer (it is localized).
     $merchantMessage = $e->getMerchantMessage();
     $clientMessage = $e->getClientMessage();
 } catch (RuntimeException $e) {
     $merchantMessage = $e->getMessage();
 }
-// Write the merchant message to your log.
-// Show the client message to the customer (it is localized).
-redirect(FAILURE_URL, $merchantMessage, $clientMessage);
+redirect($redirectUrl, $merchantMessage, $clientMessage);
diff --git a/vendor/unzerdev/php-sdk/examples/SepaDirectDebitSecured/Constants.php b/vendor/unzerdev/php-sdk/examples/SepaDirectDebitSecured/Constants.php
index 008d08d..ed51a8f 100644
--- a/vendor/unzerdev/php-sdk/examples/SepaDirectDebitSecured/Constants.php
+++ b/vendor/unzerdev/php-sdk/examples/SepaDirectDebitSecured/Constants.php
@@ -2,25 +2,8 @@
 /**
  * This file defines the constants needed for the SEPA direct debit secured example.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 require_once __DIR__ . '/../Constants.php';
diff --git a/vendor/unzerdev/php-sdk/examples/SepaDirectDebitSecured/Controller.php b/vendor/unzerdev/php-sdk/examples/SepaDirectDebitSecured/Controller.php
index 2241c45..3c38903 100644
--- a/vendor/unzerdev/php-sdk/examples/SepaDirectDebitSecured/Controller.php
+++ b/vendor/unzerdev/php-sdk/examples/SepaDirectDebitSecured/Controller.php
@@ -3,25 +3,8 @@
  * This is the controller for the SEPA direct debit secured example.
  * It is called when the pay button on the index page is clicked.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
@@ -67,10 +50,17 @@ function redirect($url, $merchantMessage = '', $clientMessage = '')
     $orderId = 'o' . str_replace(['0.', ' '], '', microtime(false));
 
     // A Basket is mandatory for SEPA direct debit secured payment type
-    $basketItem = (new BasketItem('Hat', 100.00, 119.00, 1))
-        ->setAmountGross(119.0)
-        ->setAmountVat(19.0);
-    $basket = new Basket($orderId, 119.0, 'EUR', [$basketItem]);
+    $basketItem = (new BasketItem())
+        ->setAmountPerUnitGross(119.00)
+        ->setVat(19.00)
+        ->setQuantity(1)
+        ->setBasketItemReferenceId('item1')
+        ->setTitle('Hat');
+
+    $basket = new Basket($orderId);
+    $basket->setTotalValueGross(119.00)
+        ->addBasketItem($basketItem)
+        ->setCurrencyCode('EUR');
 
     $transaction = $unzer->charge(119.0, 'EUR', $paymentTypeId, CONTROLLER_URL, $customerId, $orderId, null, $basket);
 
diff --git a/vendor/unzerdev/php-sdk/examples/SepaDirectDebitSecured/index.php b/vendor/unzerdev/php-sdk/examples/SepaDirectDebitSecured/index.php
index 1e93311..d3186a6 100644
--- a/vendor/unzerdev/php-sdk/examples/SepaDirectDebitSecured/index.php
+++ b/vendor/unzerdev/php-sdk/examples/SepaDirectDebitSecured/index.php
@@ -2,25 +2,8 @@
 /**
  * This file provides an example implementation of the SEPA direct debit secured payment type.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
@@ -36,8 +19,9 @@
 <head>
     <meta charset="UTF-8">
     <title>Unzer UI Examples</title>
-    <script src="https://code.jquery.com/jquery-3.5.1.min.js"
-            integrity="sha256-9/aliU8dGd2tb6OSsuzixeV4y/faTqgFtohetphbbj0=" crossorigin="anonymous"></script>
+    <script src="https://code.jquery.com/jquery-3.6.0.min.js"
+            integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4="
+            crossorigin="anonymous"></script>
 
     <link rel="stylesheet" href="https://static.unzer.com/v1/unzer.css" />
     <script type="text/javascript" src="https://static.unzer.com/v1/unzer.js"></script>
@@ -47,7 +31,7 @@
 
 <p><a href="https://docs.unzer.com/reference/test-data" target="_blank">Click here to open our test data in new tab.</a></p>
 
-<form id="payment-form">
+<form id="payment-form" class="unzerUI form">
     <div id="sepa-secured-IBAN" class="field">
         <!-- The IBAN field UI Element will be inserted here -->
     </div>
@@ -55,7 +39,9 @@
         <!-- The customer form UI element will be inserted here -->
     </div>
     <div class="field" id="error-holder" style="color: #9f3a38"></div>
-    <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    <div class="field">
+        <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    </div>
 </form>
 
 <script>
@@ -76,6 +62,36 @@
 
     // Handle payment form submission.
     let form = document.getElementById('payment-form');
+    let payButton = document.getElementById("submit-button");
+
+    payButton.disabled = true;
+
+    let isValidCustomer = false;
+    let isValidResource = false;
+    SepaDirectDebitSecured.addEventListener('change', function eventHandlerResource(e) {
+        if (e.success) {
+            isValidResource = true;
+            if (isValidCustomer) {
+                $('button[type="submit"]').removeAttr('disabled');
+            }
+        } else {
+            isValidResource = false;
+            $('button[type="submit"]').attr('disabled', 'disabled');
+        }
+    })
+
+    Customer.addEventListener('validate', function eventHandlerCustomer(e) {
+        if (e.success) {
+            isValidCustomer = true;
+            if (isValidResource) {
+                $('button[type="submit"]').removeAttr('disabled');
+            }
+        } else {
+            $('button[type="submit"]').attr('disabled', 'disabled');
+            isValidCustomer = false;
+        }
+    })
+
     form.addEventListener('submit', function(event) {
         event.preventDefault();
         let sepaDirectDebitSecuredPromise = SepaDirectDebitSecured.createResource();
diff --git a/vendor/unzerdev/php-sdk/examples/Sofort/Constants.php b/vendor/unzerdev/php-sdk/examples/Sofort/Constants.php
index a703382..bd909cf 100644
--- a/vendor/unzerdev/php-sdk/examples/Sofort/Constants.php
+++ b/vendor/unzerdev/php-sdk/examples/Sofort/Constants.php
@@ -2,25 +2,8 @@
 /**
  * This file defines the constants needed for the Sofort example.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 require_once __DIR__ . '/../Constants.php';
diff --git a/vendor/unzerdev/php-sdk/examples/Sofort/Controller.php b/vendor/unzerdev/php-sdk/examples/Sofort/Controller.php
index 866363b..443fa26 100644
--- a/vendor/unzerdev/php-sdk/examples/Sofort/Controller.php
+++ b/vendor/unzerdev/php-sdk/examples/Sofort/Controller.php
@@ -3,25 +3,8 @@
  * This is the controller for the Sofort example.
  * It is called when the pay button on the index page is clicked.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
diff --git a/vendor/unzerdev/php-sdk/examples/Sofort/index.php b/vendor/unzerdev/php-sdk/examples/Sofort/index.php
index ae49203..67c98e1 100644
--- a/vendor/unzerdev/php-sdk/examples/Sofort/index.php
+++ b/vendor/unzerdev/php-sdk/examples/Sofort/index.php
@@ -2,25 +2,8 @@
 /**
  * This file provides an example implementation of the Sofort payment type.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
@@ -36,8 +19,9 @@
 <head>
     <meta charset="UTF-8">
     <title>Unzer UI Examples</title>
-    <script src="https://code.jquery.com/jquery-3.5.1.min.js"
-            integrity="sha256-9/aliU8dGd2tb6OSsuzixeV4y/faTqgFtohetphbbj0=" crossorigin="anonymous"></script>
+    <script src="https://code.jquery.com/jquery-3.6.0.min.js"
+            integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4="
+            crossorigin="anonymous"></script>
 
     <link rel="stylesheet" href="https://static.unzer.com/v1/unzer.css" />
     <script type="text/javascript" src="https://static.unzer.com/v1/unzer.js"></script>
@@ -49,7 +33,9 @@
 
 <form id="payment-form" class="unzerUI form" novalidate>
     <div class="field" id="error-holder" style="color: #9f3a38"> </div>
-    <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    <div class="field">
+        <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    </div>
 </form>
 
 <script>
diff --git a/vendor/unzerdev/php-sdk/examples/Success.php b/vendor/unzerdev/php-sdk/examples/Success.php
index f906565..94a2475 100644
--- a/vendor/unzerdev/php-sdk/examples/Success.php
+++ b/vendor/unzerdev/php-sdk/examples/Success.php
@@ -2,70 +2,80 @@
 /**
  * This is the success page for the example payments.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
+use UnzerSDK\Unzer;
+
 require_once __DIR__ . '/Constants.php';
+require_once __DIR__ . '/../../../autoload.php';
 
 session_start();
+
+$additionalPaymentInformation = $_SESSION['additionalPaymentInformation'] ?? null;
+$shortId = $_SESSION['ShortId'] ?? null;
+$paymentId = $_SESSION['PaymentId'] ?? null;
+$paymentTypeId = $_SESSION['PaymentTypeId'] ?? null;
+$isAuthorizeTransaction = $_SESSION['isAuthorizeTransaction'] ?? false;
+
 ?>
 
 <!DOCTYPE html>
 <html lang="en">
-    <head>
-        <meta charset="UTF-8">
-        <title>Unzer UI Examples</title>
+<head>
+    <meta charset="UTF-8">
+    <title>Unzer UI Examples</title>
+    <script src="https://code.jquery.com/jquery-3.6.0.min.js"
+            integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4=" crossorigin="anonymous"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/semantic-ui/2.4.1/semantic.min.js"></script>
+    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/semantic-ui/2.4.1/semantic.min.css"/>
+
+    <link rel="stylesheet" href="https://static.unzer.com/v1/unzer.css"/>
+</head>
+<body style="margin: 30px 70px 0;">
+<div class="ui container segment">
 
-        <link rel="stylesheet" href="https://static.unzer.com/v1/unzer.css" />
-    </head>
-    <body>
-        <h1 id="result">Success</h1>
-        <p>
-            The order has been successfully placed.
+    <h1 id="result" class="ui header">Success</h1>
+    <p>The order has been successfully placed.</p>
 
-            <?php
-            if (isset($_SESSION['additionalPaymentInformation'])) {
-                echo $_SESSION['additionalPaymentInformation'];
-            }
+        <?php
+        if (!empty($additionalPaymentInformation)) {
+            echo $additionalPaymentInformation;
+        }
 
-            if (isset($_SESSION['ShortId']) && !empty($_SESSION['ShortId'])) {
-                echo '<p>Please look for ShortId ' . $_SESSION['ShortId'] . ' in Unzer Insights to see the transaction.</p>';
-            }
-            if (isset($_SESSION['PaymentId']) && !empty($_SESSION['PaymentId'])) {
-                echo '<p>The PaymentId of your transaction is \'' . $_SESSION['PaymentId'] . '\'.</p>';
-            }
-            if (isset($_SESSION['PaymentTypeId']) && !empty($_SESSION['PaymentTypeId'])) {
-                echo    '<p>The TypeId for the recurring payment is \'' . $_SESSION['PaymentTypeId'] . '\'. You can use it
+        if ($shortId !== null) {
+            $defaultTransactionMessage = '<p>Please look for ShortId ' . $shortId . ' in Unzer Insights to see the transaction.</p>';
+            $paylaterTransactionMessage = '<p>Please use the "descriptor" to look for the transaction in the Unzer Pay Later Merchant Portal.</p>';
+            echo preg_match('/[\d]{4}.[\d]{4}.[\d]{4}/', $shortId) ? $defaultTransactionMessage : $paylaterTransactionMessage;
+        }
+
+        $isManageable = false;
+        if ($paymentId !== null) {
+            echo '<p>The PaymentId of your transaction is \'' . $paymentId . '\'.</p>';
+            $unzer = new Unzer(UNZER_PAPI_PRIVATE_KEY);
+            $payment = $unzer->fetchPayment($paymentId);
+            $isManageable = $payment->getPaymentType()->supportsDirectPaymentCancel() || $payment->getAuthorization() !== null;
+        }
+
+        if ($paymentTypeId !== null) {
+            echo '<p>The TypeId for the recurring payment is \'' . $paymentTypeId . '\'. You can use it
                             now for subsequent transactions.</p>
                             <form id="payment-form" class="unzerUI form" action="' . RECURRING_PAYMENT_CONTROLLER_URL . '" method="post">
-                                <input type="hidden" name="payment_type_id" value="' . $_SESSION['PaymentTypeId'] . ' ">
+                                <input type="hidden" name="payment_type_id" value="' . $paymentTypeId . ' ">
                                 <div class="fields inline">
                                     <div class="field">
                                         <button class="unzerUI primary button fluid" id="submit-button" type="submit">Charge payment type again.</button>
                                     </div>
                                 </div>
                             </form>';
-            }
-            ?>
-        </p>
-        <p><a href=".">start again</a></p>
-    </body>
+        }
+
+        if ($isManageable) {
+            echo '<p>As a merchant you can charge or cancel the Payment here: <a href="./Backend/ManagePayment.php">Manage Payment</a></p>';
+        }
+        ?>
+    <a href="." class="ui green button">start again</a>
+</div>
+</body>
 </html>
diff --git a/vendor/unzerdev/php-sdk/examples/Webhooks/Constants.php b/vendor/unzerdev/php-sdk/examples/Webhooks/Constants.php
index b9b5aae..488b84b 100644
--- a/vendor/unzerdev/php-sdk/examples/Webhooks/Constants.php
+++ b/vendor/unzerdev/php-sdk/examples/Webhooks/Constants.php
@@ -2,25 +2,8 @@
 /**
  * This file defines the constants needed for the Webhooks example.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 require_once __DIR__ . '/../Constants.php';
diff --git a/vendor/unzerdev/php-sdk/examples/Webhooks/Controller.php b/vendor/unzerdev/php-sdk/examples/Webhooks/Controller.php
index e3771a3..e7b9c7c 100644
--- a/vendor/unzerdev/php-sdk/examples/Webhooks/Controller.php
+++ b/vendor/unzerdev/php-sdk/examples/Webhooks/Controller.php
@@ -2,25 +2,8 @@
 /**
  * This is the controller for the Webhook reception tests.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
diff --git a/vendor/unzerdev/php-sdk/examples/Webhooks/fetchAll.php b/vendor/unzerdev/php-sdk/examples/Webhooks/fetchAll.php
index 76be7ea..2e636eb 100644
--- a/vendor/unzerdev/php-sdk/examples/Webhooks/fetchAll.php
+++ b/vendor/unzerdev/php-sdk/examples/Webhooks/fetchAll.php
@@ -2,25 +2,8 @@
 /**
  * This is the controller performing the fetch all command for the Webhook tests.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
@@ -59,11 +42,12 @@ function printInfo($title, $text)
 <head>
     <meta charset="UTF-8">
     <title>Unzer UI Examples</title>
-    <script src="https://code.jquery.com/jquery-3.5.1.min.js"
-            integrity="sha256-9/aliU8dGd2tb6OSsuzixeV4y/faTqgFtohetphbbj0=" crossorigin="anonymous"></script>
+    <script src="https://code.jquery.com/jquery-3.6.0.min.js"
+            integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4="
+            crossorigin="anonymous"></script>
 
-    <script src="https://cdnjs.cloudflare.com/ajax/libs/semantic-ui/2.3.1/semantic.min.js"></script>
-    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/semantic-ui/2.3.1/semantic.min.css" />
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/semantic-ui/2.4.1/semantic.min.js"></script>
+    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/semantic-ui/2.4.1/semantic.min.css" />
 </head>
 
 <body style="margin: 70px 70px 0;">
diff --git a/vendor/unzerdev/php-sdk/examples/Webhooks/index.php b/vendor/unzerdev/php-sdk/examples/Webhooks/index.php
index 054f3bf..e8f9921 100644
--- a/vendor/unzerdev/php-sdk/examples/Webhooks/index.php
+++ b/vendor/unzerdev/php-sdk/examples/Webhooks/index.php
@@ -2,25 +2,8 @@
 /**
  * This is the index controller for the Webhook tests.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
@@ -66,11 +49,12 @@ function printInfo($title, $text)
 <head>
     <meta charset="UTF-8">
     <title>Unzer UI Examples</title>
-    <script src="https://code.jquery.com/jquery-3.5.1.min.js"
-            integrity="sha256-9/aliU8dGd2tb6OSsuzixeV4y/faTqgFtohetphbbj0=" crossorigin="anonymous"></script>
+    <script src="https://code.jquery.com/jquery-3.6.0.min.js"
+            integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4="
+            crossorigin="anonymous"></script>
 
-    <script src="https://cdnjs.cloudflare.com/ajax/libs/semantic-ui/2.3.1/semantic.min.js"></script>
-    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/semantic-ui/2.3.1/semantic.min.css" />
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/semantic-ui/2.4.1/semantic.min.js"></script>
+    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/semantic-ui/2.4.1/semantic.min.css" />
 </head>
 
 <body style="margin: 70px 70px 0;">
diff --git a/vendor/unzerdev/php-sdk/examples/Webhooks/removeAll.php b/vendor/unzerdev/php-sdk/examples/Webhooks/removeAll.php
index 32061ab..b6d269a 100644
--- a/vendor/unzerdev/php-sdk/examples/Webhooks/removeAll.php
+++ b/vendor/unzerdev/php-sdk/examples/Webhooks/removeAll.php
@@ -2,25 +2,8 @@
 /**
  * This is the index controller for the Webhook tests.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
@@ -64,11 +47,12 @@ function printInfo($title, $text)
 <head>
     <meta charset="UTF-8">
     <title>Unzer UI Examples</title>
-    <script src="https://code.jquery.com/jquery-3.5.1.min.js"
-            integrity="sha256-9/aliU8dGd2tb6OSsuzixeV4y/faTqgFtohetphbbj0=" crossorigin="anonymous"></script>
+    <script src="https://code.jquery.com/jquery-3.6.0.min.js"
+            integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4="
+            crossorigin="anonymous"></script>
 
-    <script src="https://cdnjs.cloudflare.com/ajax/libs/semantic-ui/2.3.1/semantic.min.js"></script>
-    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/semantic-ui/2.3.1/semantic.min.css" />
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/semantic-ui/2.4.1/semantic.min.js"></script>
+    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/semantic-ui/2.4.1/semantic.min.css" />
 </head>
 
 <body style="margin: 70px 70px 0;">
diff --git a/vendor/unzerdev/php-sdk/examples/Wechatpay/Constants.php b/vendor/unzerdev/php-sdk/examples/Wechatpay/Constants.php
index ae5c8b5..3f0f256 100644
--- a/vendor/unzerdev/php-sdk/examples/Wechatpay/Constants.php
+++ b/vendor/unzerdev/php-sdk/examples/Wechatpay/Constants.php
@@ -2,25 +2,8 @@
 /**
  * This file defines the constants needed for the WeChatPay example.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 require_once __DIR__ . '/../Constants.php';
diff --git a/vendor/unzerdev/php-sdk/examples/Wechatpay/Controller.php b/vendor/unzerdev/php-sdk/examples/Wechatpay/Controller.php
index e46b0f6..f1eba0c 100644
--- a/vendor/unzerdev/php-sdk/examples/Wechatpay/Controller.php
+++ b/vendor/unzerdev/php-sdk/examples/Wechatpay/Controller.php
@@ -3,25 +3,8 @@
  * This is the controller for the WeChatPay example.
  * It is called when the pay button on the index page is clicked.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
diff --git a/vendor/unzerdev/php-sdk/examples/Wechatpay/index.php b/vendor/unzerdev/php-sdk/examples/Wechatpay/index.php
index 0b5f688..43d16d5 100644
--- a/vendor/unzerdev/php-sdk/examples/Wechatpay/index.php
+++ b/vendor/unzerdev/php-sdk/examples/Wechatpay/index.php
@@ -2,25 +2,8 @@
 /**
  * This file provides an example implementation of the WeChatPay payment type.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /** Require the constants of this example */
@@ -36,8 +19,9 @@
 <head>
     <meta charset="UTF-8">
     <title>Unzer UI Examples</title>
-    <script src="https://code.jquery.com/jquery-3.5.1.min.js"
-            integrity="sha256-9/aliU8dGd2tb6OSsuzixeV4y/faTqgFtohetphbbj0=" crossorigin="anonymous"></script>
+    <script src="https://code.jquery.com/jquery-3.6.0.min.js"
+            integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4="
+            crossorigin="anonymous"></script>
 
     <link rel="stylesheet" href="https://static.unzer.com/v1/unzer.css" />
     <script type="text/javascript" src="https://static.unzer.com/v1/unzer.js"></script>
@@ -54,7 +38,9 @@
 
 <form id="payment-form" class="unzerUI form" novalidate>
     <div class="field" id="error-holder" style="color: #9f3a38"> </div>
-    <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    <div class="field">
+        <button class="unzerUI primary button fluid" id="submit-button" type="submit">Pay</button>
+    </div>
 </form>
 
 <script>
diff --git a/vendor/unzerdev/php-sdk/examples/_enableExamples.php b/vendor/unzerdev/php-sdk/examples/_enableExamples.php
index 748f594..ccc844f 100644
--- a/vendor/unzerdev/php-sdk/examples/_enableExamples.php
+++ b/vendor/unzerdev/php-sdk/examples/_enableExamples.php
@@ -4,32 +4,15 @@
  * You can switch the constant 'UNZER_PAPI_EXAMPLES' to true to make the examples executable.
  * But you should always set it false on productive environments.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 /* Set to true if you want to enable the examples */
 define('UNZER_PAPI_EXAMPLES', false);
 
 /* Please set this to your url. It must be reachable over the net
-Webhooks will work with https only. However protocol can be changed to http if necessary. */
+Webhooks will work with https only. However, protocol can be changed to http if necessary. */
 define('UNZER_PAPI_URL', 'https://'.$_SERVER['HTTP_HOST']);
 
 /* Please enter the path from root directory to the example folder */
@@ -38,3 +21,23 @@
 /* Please provide your own sandbox-keypair here. */
 define('UNZER_PAPI_PRIVATE_KEY', 's-priv-***');
 define('UNZER_PAPI_PUBLIC_KEY', 's-pub-***');
+
+/* Image URLs used for Paymentpages can be adjusted here */
+define('UNZER_PP_LOGO_URL', 'https://sbx-insights.unzer.com/static/unzerLogo.svg');
+define('UNZER_PP_FULL_PAGE_IMAGE_URL', 'https://raw.githubusercontent.com/unzerdev/php-sdk/da9c3fce11264f412e03009606621cc6d9ec0ab1/unzer_logo.svg');
+
+/* ============ PaymentType Specific settings ============ */
+
+/* ------------ Google Pay ------------ */
+// Channel of 'googlepay' type. You can find the channel in your keypair config.
+define('UNZER_EXAMPLE_GOOGLEPAY_CHANNEL', '');
+
+/* ------------ Apple Pay ------------ */
+/* For Apple Pay only, set the path to your Apple Pay Merchant-ID certificate. */
+define('UNZER_EXAMPLE_APPLEPAY_MERCHANT_CERT', UNZER_PAPI_FOLDER . '');
+
+/* Set the path to the key file of your Apple Pay Merchant-ID certificate. */
+define('UNZER_EXAMPLE_APPLEPAY_MERCHANT_CERT_KEY', UNZER_PAPI_FOLDER .'');
+
+/* Merchant identifier of Apple Pay Merchant ID. */
+define('UNZER_EXAMPLE_APPLEPAY_MERCHANT_IDENTIFIER', '');
diff --git a/vendor/unzerdev/php-sdk/examples/index.php b/vendor/unzerdev/php-sdk/examples/index.php
index decc85d..05a0c51 100644
--- a/vendor/unzerdev/php-sdk/examples/index.php
+++ b/vendor/unzerdev/php-sdk/examples/index.php
@@ -2,25 +2,8 @@
 /**
  * This file provides a list of the example implementations.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\examples
  */
 
 use UnzerSDK\Validators\PrivateKeyValidator;
@@ -47,17 +30,17 @@ function printMessage($type, $title, $text)
     <head>
         <meta charset="UTF-8">
         <title>Unzer UI Examples</title>
-        <script src="https://code.jquery.com/jquery-3.5.1.min.js"
-                integrity="sha256-9/aliU8dGd2tb6OSsuzixeV4y/faTqgFtohetphbbj0=" crossorigin="anonymous"></script>
+        <script src="https://code.jquery.com/jquery-3.6.0.min.js"
+                integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4=" crossorigin="anonymous"></script>
 
-        <script src="https://cdnjs.cloudflare.com/ajax/libs/semantic-ui/2.3.1/semantic.min.js"></script>
-        <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/semantic-ui/2.3.1/semantic.min.css" />
+        <script src="https://cdnjs.cloudflare.com/ajax/libs/semantic-ui/2.4.1/semantic.min.js"></script>
+        <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/semantic-ui/2.4.1/semantic.min.css" />
 
         <link rel="stylesheet" href="https://static.unzer.com/v1/unzer.css" />
         <script type="text/javascript" src="https://static.unzer.com/v1/unzer.js"></script>
     </head>
 
-    <body style="margin: 70px 70px 0;">
+    <body style="margin: 30px 70px 0;">
         <div class="ui container segment">
             <h2 class="ui header">
                 <i class="shopping cart icon"></i>
@@ -83,6 +66,23 @@ function printMessage($type, $title, $text)
             ?>
 
             <div class="ui four cards">
+                <div class="card olive">
+                    <div class="content">
+                        <div class="header">Apple Pay</div>
+                        <div class="description">
+                            You can try authorize and charge transactions.
+                            Please make sure to provide the path to the certificates for this payment type.
+                            Notes:
+                            <ul>
+                                <li>This payment type is available for Apple devices only.</li>
+                                <li>Please refer to <a href="https://developer.apple.com/videos/play/tutorials/configuring-your-developer-account-for-apple-pay/" target="_blank">this page</a> to learn all about the requirements for Apple Pay.</li>
+                            </ul>
+                        </div>
+                    </div>
+                    <div id="tryApplePayExample" class="ui bottom attached green button" onclick="location.href='Applepay/';">
+                        Try
+                    </div>
+                </div>
                 <div class="card olive">
                     <div class="content">
                         <div class="header">Card</div>
@@ -155,6 +155,18 @@ function printMessage($type, $title, $text)
                         Try
                     </div>
                 </div>
+                <div class="card olive">
+                    <div class="content">
+                        <div class="header">
+                            Google Pay
+                        </div>
+                        <div class="description">
+                        </div>
+                    </div>
+                    <div id="tryGooglepayExample" class="ui bottom attached green button" onclick="location.href='Googlepay/';">
+                        Try
+                    </div>
+                </div>
                 <div class="card olive">
                     <div class="content">
                         <div class="header">
@@ -206,7 +218,7 @@ function printMessage($type, $title, $text)
                 <div class="card olive">
                     <div class="content">
                         <div class="header">
-                            Invoice
+                            Invoice (deprecated)
                         </div>
                         <div class="description">
                         </div>
@@ -220,11 +232,40 @@ function printMessage($type, $title, $text)
                         <div class="header">
                             Unzer Invoice
                         </div>
+                        <div class="description">
+                            With "paylater-invoice" type.
+                        </div>
+                    </div>
+                    <div class="ui attached white button" onclick="location.href='https://docs.unzer.com/payment-methods/unzer-invoice-upl/';">
+                        Documentation
+                    </div>
+                    <div id="tryInvoiceSecuredExample" class="ui bottom attached green button" onclick="location.href='PaylaterInvoice/';">
+                        Try
+                    </div>
+                </div>
+                <div class="card olive">
+                    <div class="content">
+                        <div class="header">
+                            Unzer Invoice (deprecated)
+                        </div>
+                        <div class="description">
+                            With "invoice-secured" type.
+                        </div>
                     </div>
                     <div id="tryInvoiceSecuredExample" class="ui bottom attached green button" onclick="location.href='InvoiceSecured/';">
                         Try
                     </div>
                 </div>
+                <div class="card olive">
+                    <div class="content">
+                        <div class="header">
+                            Klarna
+                        </div>
+                    </div>
+                    <div id="tryKlarnaExample" class="ui bottom attached green button" onclick="location.href='Klarna/';">
+                        Try
+                    </div>
+                </div>
                 <div class="card olive">
                     <div class="content">
                         <div class="header">
@@ -251,6 +292,18 @@ function printMessage($type, $title, $text)
                         Try
                     </div>
                 </div>
+                <div class="card olive">
+                    <div class="content">
+                        <div class="header">
+                            PayU
+                        </div>
+                        <div class="description">
+                        </div>
+                    </div>
+                    <div id="tryPayUExample" class="ui bottom attached green button" onclick="location.href='PayU/';">
+                        Try
+                    </div>
+                </div>
                 <div class="card olive">
                     <div class="content">
                         <div class="header">
@@ -266,7 +319,7 @@ function printMessage($type, $title, $text)
                 <div class="card olive">
                     <div class="content">
                         <div class="header">
-                            Unzer Direct Debit
+                            Unzer Direct Debit (deprecated)
                         </div>
                         <div class="description">
                         </div>
@@ -278,7 +331,31 @@ function printMessage($type, $title, $text)
                 <div class="card olive">
                     <div class="content">
                         <div class="header">
-                            Unzer Installment (secured)
+                            Paylater Direct Debit
+                        </div>
+                        <div class="description">
+                        </div>
+                    </div>
+                    <div id="tryPaylaterDirectDebit" class="ui bottom attached green button" onclick="location.href='PaylaterDirectDebit/';">
+                        Try
+                    </div>
+                </div>
+                <div class="card olive">
+                    <div class="content">
+                        <div class="header">
+                            Paylater Installment
+                        </div>
+                        <div class="description">
+                        </div>
+                    </div>
+                    <div id="tryPaylaterInstallment" class="ui bottom attached green button" onclick="location.href='PaylaterInstallment/';">
+                        Try
+                    </div>
+                </div>
+                <div class="card olive">
+                    <div class="content">
+                        <div class="header">
+                            Installment Secured (deprecated)
                         </div>
                         <div class="description">
                         </div>
@@ -299,6 +376,30 @@ function printMessage($type, $title, $text)
                         Try
                     </div>
                 </div>
+                <div class="card olive">
+                    <div class="content">
+                        <div class="header">
+                            Post Finance Card
+                        </div>
+                        <div class="description">
+                        </div>
+                    </div>
+                    <div id="tryPostFinanceCardExample" class="ui bottom attached green button" onclick="location.href='PostFinanceCard/';">
+                        Try
+                    </div>
+                </div>
+                <div class="card olive">
+                    <div class="content">
+                        <div class="header">
+                            Post Finance eFinance
+                        </div>
+                        <div class="description">
+                        </div>
+                    </div>
+                    <div id="tryPostFinanceEfinanceExample" class="ui bottom attached green button" onclick="location.href='PostFinanceEfinance/';">
+                        Try
+                    </div>
+                </div>
                 <div class="card olive">
                     <div class="content">
                         <div class="header">
@@ -310,7 +411,7 @@ function printMessage($type, $title, $text)
                             server and redirected to a given RedirectUrl.
                         </div>
                     </div>
-                    <div class="ui attached white button" onclick="location.href='https://docs.unzer.com/accept-payments/accept-payments-payment-page';">
+                    <div class="ui attached white button" onclick="location.href='https://docs.unzer.com/online-payments/payment-pages/integrate-hpp/';">
                         Documentation
                     </div>
                     <div id="tryHostedPayPageExample" class="ui bottom attached green button" onclick="location.href='HostedPayPage/';">
@@ -327,7 +428,7 @@ function printMessage($type, $title, $text)
                             The Payment Page will be shown as an Overlay in your own shop.
                         </div>
                     </div>
-                    <div class="ui attached white button" onclick="location.href='https://docs.unzer.com/accept-payments/accept-payments-payment-page';">
+                    <div class="ui attached white button" onclick="location.href='https://docs.unzer.com/online-payments/payment-pages/integrate-epp/';">
                         Documentation
                     </div>
                     <div id="tryEmbeddedPayPageExample" class="ui bottom attached green button" onclick="location.href='EmbeddedPayPage/';">
diff --git a/vendor/unzerdev/php-sdk/phpunit.xml b/vendor/unzerdev/php-sdk/phpunit.xml
index 58ad406..df90057 100644
--- a/vendor/unzerdev/php-sdk/phpunit.xml
+++ b/vendor/unzerdev/php-sdk/phpunit.xml
@@ -1,5 +1,6 @@
 <?xml version="1.0"?>
-<phpunit backupGlobals="false"
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         backupGlobals="false"
          backupStaticAttributes="false"
          bootstrap="test/bootstrap.php"
          colors="false"
@@ -8,16 +9,17 @@
          convertWarningsToExceptions="false"
          processIsolation="false"
          stopOnFailure="false"
-         verbose="true">
+         verbose="true"
+         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.3/phpunit.xsd">
+    <coverage processUncoveredFiles="true">
+        <include>
+            <directory suffix=".php">src/</directory>
+        </include>
+    </coverage>
     <groups>
         <exclude>
             <group>disabled</group>
             <group>skip</group>
         </exclude>
     </groups>
-    <filter>
-        <whitelist processUncoveredFilesFromWhitelist="true">
-            <directory suffix=".php">src/</directory>
-        </whitelist>
-    </filter>
-</phpunit>
\ No newline at end of file
+</phpunit>
diff --git a/vendor/unzerdev/php-sdk/src/Adapter/ApplepayAdapter.php b/vendor/unzerdev/php-sdk/src/Adapter/ApplepayAdapter.php
index 72e496b..824650a 100644
--- a/vendor/unzerdev/php-sdk/src/Adapter/ApplepayAdapter.php
+++ b/vendor/unzerdev/php-sdk/src/Adapter/ApplepayAdapter.php
@@ -1,29 +1,7 @@
 <?php
+
 /** @noinspection PhpComposerExtensionStubsInspection */
 
-/**
- * This is a wrapper for the applepay http adapter (CURL).
- *
- * Copyright (C) 2021 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @link https://dev.unzer.com/
- *
- * @author David Owusu <development@unzer.com>
- *
- * @package  UnzerSDK\Adapter
- */
 namespace UnzerSDK\Adapter;
 
 use UnzerSDK\Constants\ApplepayValidationDomains;
@@ -31,6 +9,12 @@
 use UnzerSDK\Resources\ExternalResources\ApplepaySession;
 use UnzerSDK\Services\EnvironmentService;
 
+/**
+ * This is a wrapper for the applepay http adapter (CURL).
+ *
+ * @link https://dev.unzer.com/
+ *
+ */
 class ApplepayAdapter
 {
     private $request;
diff --git a/vendor/unzerdev/php-sdk/src/Adapter/CurlAdapter.php b/vendor/unzerdev/php-sdk/src/Adapter/CurlAdapter.php
index 6a282ed..e3ddd2b 100644
--- a/vendor/unzerdev/php-sdk/src/Adapter/CurlAdapter.php
+++ b/vendor/unzerdev/php-sdk/src/Adapter/CurlAdapter.php
@@ -1,35 +1,21 @@
 <?php
+
 /** @noinspection PhpComposerExtensionStubsInspection */
 /**
  * This is a wrapper for the default http adapter (CURL).
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link https://dev.unzer.com/
  *
- * @author Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Adapter
  */
+
 namespace UnzerSDK\Adapter;
 
 use UnzerSDK\Unzer;
 use UnzerSDK\Services\EnvironmentService;
-use function extension_loaded;
 use UnzerSDK\Exceptions\UnzerApiException;
 use RuntimeException;
+
+use function extension_loaded;
 use function in_array;
 
 class CurlAdapter implements HttpAdapterInterface
@@ -51,7 +37,7 @@ public function __construct()
     /**
      * {@inheritDoc}
      */
-    public function init($url, $payload = null, $httpMethod = HttpAdapterInterface::REQUEST_GET): void
+    public function init(string $url, string $payload = null, string $httpMethod = HttpAdapterInterface::REQUEST_GET): void
     {
         $timeout = EnvironmentService::getTimeout();
         $curlVerbose = EnvironmentService::isCurlVerbose();
@@ -69,7 +55,12 @@ public function init($url, $payload = null, $httpMethod = HttpAdapterInterface::
         $this->setOption(CURLOPT_VERBOSE, $curlVerbose);
         $this->setOption(CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1_2);
 
-        if (in_array($httpMethod, [HttpAdapterInterface::REQUEST_POST, HttpAdapterInterface::REQUEST_PUT], true)) {
+        $postFieldMethods = [
+            HttpAdapterInterface::REQUEST_POST,
+            HttpAdapterInterface::REQUEST_PUT,
+            HttpAdapterInterface::REQUEST_PATCH
+        ];
+        if (in_array($httpMethod, $postFieldMethods, true)) {
             $this->setOption(CURLOPT_POSTFIELDS, $payload);
         }
     }
diff --git a/vendor/unzerdev/php-sdk/src/Adapter/HttpAdapterInterface.php b/vendor/unzerdev/php-sdk/src/Adapter/HttpAdapterInterface.php
index ea01679..4e238b8 100644
--- a/vendor/unzerdev/php-sdk/src/Adapter/HttpAdapterInterface.php
+++ b/vendor/unzerdev/php-sdk/src/Adapter/HttpAdapterInterface.php
@@ -2,45 +2,30 @@
 /**
  * Http adapters to be used by this api have to implement this interface.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/docs/php-sdk/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Adapter
  */
+
 namespace UnzerSDK\Adapter;
 
 use UnzerSDK\Exceptions\UnzerApiException;
 
 interface HttpAdapterInterface
 {
-    public const REQUEST_POST = 'POST';
     public const REQUEST_DELETE = 'DELETE';
-    public const REQUEST_PUT = 'PUT';
     public const REQUEST_GET = 'GET';
+    public const REQUEST_PATCH = 'PATCH';
+    public const REQUEST_POST = 'POST';
+    public const REQUEST_PUT = 'PUT';
 
     /**
      * Initializes the request.
      *
-     * @param string $url        The full url to connect to.
-     * @param string $payload    Json encoded payload string.
-     * @param string $httpMethod The Http method to perform.
+     * @param string      $url        The full url to connect to.
+     * @param string|null $payload    Json encoded payload string.
+     * @param string      $httpMethod The Http method to perform.
      */
-    public function init($url, $payload = null, $httpMethod = HttpAdapterInterface::REQUEST_GET): void;
+    public function init(string $url, string $payload = null, string $httpMethod = HttpAdapterInterface::REQUEST_GET): void;
 
     /**
      * Executes the request and returns the response.
diff --git a/vendor/unzerdev/php-sdk/src/Constants/AdditionalAttributes.php b/vendor/unzerdev/php-sdk/src/Constants/AdditionalAttributes.php
new file mode 100644
index 0000000..b090361
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/src/Constants/AdditionalAttributes.php
@@ -0,0 +1,16 @@
+<?php
+
+namespace UnzerSDK\Constants;
+
+/**
+ * This file contains the AdditionalAttribute keys.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+class AdditionalAttributes
+{
+    public const EFFECTIVE_INTEREST_RATE = 'effectiveInterestRate';
+    public const RECURRENCE_TYPE = 'recurrenceType';
+    public const EXEMPTION_TYPE = 'exemptionType';
+}
diff --git a/vendor/unzerdev/php-sdk/src/Constants/AdditionalTransactionDataKeys.php b/vendor/unzerdev/php-sdk/src/Constants/AdditionalTransactionDataKeys.php
new file mode 100644
index 0000000..3cf31f3
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/src/Constants/AdditionalTransactionDataKeys.php
@@ -0,0 +1,21 @@
+<?php
+
+namespace UnzerSDK\Constants;
+
+/**
+ * This file contains the different id strings to be handled within this SDK.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+class AdditionalTransactionDataKeys
+{
+    // Transactions
+    public const TERMS_AND_CONDITION_URL = 'termsAndConditionUrl';
+    public const PRIVACY_POLICY_URL = 'privacyPolicyUrl';
+
+    // Checkout types
+    public const CHECKOUTTYPE = 'checkoutType';
+
+    public const CARD = 'card';
+}
diff --git a/vendor/unzerdev/php-sdk/src/Constants/ApiResponseCodes.php b/vendor/unzerdev/php-sdk/src/Constants/ApiResponseCodes.php
index 48051f7..38c943f 100644
--- a/vendor/unzerdev/php-sdk/src/Constants/ApiResponseCodes.php
+++ b/vendor/unzerdev/php-sdk/src/Constants/ApiResponseCodes.php
@@ -1,29 +1,13 @@
 <?php
+
+namespace UnzerSDK\Constants;
+
 /**
  * This file contains definitions of common response codes.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Constants
  */
-namespace UnzerSDK\Constants;
-
 class ApiResponseCodes
 {
     // Status codes
@@ -62,6 +46,7 @@ class ApiResponseCodes
     public const API_ERROR_RECURRING_PAYMENT_NOT_SUPPORTED             = 'API.500.550.004';
     public const API_ERROR_WEBHOOK_EVENT_ALREADY_REGISTERED            = 'API.510.310.009';
     public const API_ERROR_WEBHOOK_CAN_NOT_BE_FOUND                    = 'API.510.310.008';
+    public const API_ERROR_BASKET_NOT_FOUND                            = 'API.600.410.024';
     public const API_ERROR_BASKET_ITEM_IMAGE_INVALID_URL               = 'API.600.630.004';
     public const API_ERROR_RECURRING_ALREADY_ACTIVE                    = 'API.640.550.006';
     public const API_ERROR_INVALID_KEY                                 = 'API.710.000.002';
@@ -70,6 +55,7 @@ class ApiResponseCodes
     public const API_ERROR_FIELD_IS_MISSING                            = 'API.710.200.100';
 
     public const CORE_ERROR_INVALID_OR_MISSING_LOGIN                   = 'COR.100.300.600';
+    public const CORE_INVALID_IP_NUMBER                                = 'COR.100.900.401';
     public const CORE_ERROR_INSURANCE_ALREADY_ACTIVATED                = 'COR.700.400.800';
 
     public const SDM_ERROR_CURRENT_INSURANCE_EVENT                     = 'SDM.CURRENT_INSURANCE_EVENT';
diff --git a/vendor/unzerdev/php-sdk/src/Constants/ApplepayValidationDomains.php b/vendor/unzerdev/php-sdk/src/Constants/ApplepayValidationDomains.php
index 9f9824a..39bf63a 100644
--- a/vendor/unzerdev/php-sdk/src/Constants/ApplepayValidationDomains.php
+++ b/vendor/unzerdev/php-sdk/src/Constants/ApplepayValidationDomains.php
@@ -1,29 +1,13 @@
 <?php
+
+namespace UnzerSDK\Constants;
+
 /**
  * This file contains the different domains that are allowed to be used for merchant validation.
  *
- * Copyright (C) 2021 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  David Owusu <development@unzer.com>
- *
- * @package  UnzerSDK\Constants
  */
-namespace UnzerSDK\Constants;
-
 class ApplepayValidationDomains
 {
     // URL list
diff --git a/vendor/unzerdev/php-sdk/src/Constants/BasketItemTypes.php b/vendor/unzerdev/php-sdk/src/Constants/BasketItemTypes.php
index c2b5976..66b87e4 100644
--- a/vendor/unzerdev/php-sdk/src/Constants/BasketItemTypes.php
+++ b/vendor/unzerdev/php-sdk/src/Constants/BasketItemTypes.php
@@ -1,29 +1,13 @@
 <?php
+
+namespace UnzerSDK\Constants;
+
 /**
  * This file contains the allowed commercial sector items.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://dev.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Constants
  */
-namespace UnzerSDK\Constants;
-
 class BasketItemTypes
 {
     public const GOODS    = 'goods';
diff --git a/vendor/unzerdev/php-sdk/src/Constants/CancelReasonCodes.php b/vendor/unzerdev/php-sdk/src/Constants/CancelReasonCodes.php
index bb2c659..2dad0da 100644
--- a/vendor/unzerdev/php-sdk/src/Constants/CancelReasonCodes.php
+++ b/vendor/unzerdev/php-sdk/src/Constants/CancelReasonCodes.php
@@ -1,29 +1,13 @@
 <?php
+
+namespace UnzerSDK\Constants;
+
 /**
  * This file contains the different cancel reason codes.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Constants
  */
-namespace UnzerSDK\Constants;
-
 class CancelReasonCodes
 {
     public const REASON_CODE_CANCEL = 'CANCEL';
diff --git a/vendor/unzerdev/php-sdk/src/Constants/CompanyCommercialSectorItems.php b/vendor/unzerdev/php-sdk/src/Constants/CompanyCommercialSectorItems.php
index 1d16990..98ef420 100644
--- a/vendor/unzerdev/php-sdk/src/Constants/CompanyCommercialSectorItems.php
+++ b/vendor/unzerdev/php-sdk/src/Constants/CompanyCommercialSectorItems.php
@@ -1,29 +1,13 @@
 <?php
+
+namespace UnzerSDK\Constants;
+
 /**
  * This file contains the allowed commercial sector items.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Constants
  */
-namespace UnzerSDK\Constants;
-
 class CompanyCommercialSectorItems
 {
     public const OTHER = 'OTHER';
diff --git a/vendor/unzerdev/php-sdk/src/Constants/CompanyRegistrationTypes.php b/vendor/unzerdev/php-sdk/src/Constants/CompanyRegistrationTypes.php
index e0f3ade..7ae0d73 100644
--- a/vendor/unzerdev/php-sdk/src/Constants/CompanyRegistrationTypes.php
+++ b/vendor/unzerdev/php-sdk/src/Constants/CompanyRegistrationTypes.php
@@ -1,29 +1,13 @@
 <?php
+
+namespace UnzerSDK\Constants;
+
 /**
  * This file contains the possible registration types of B2B customers.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Constants
  */
-namespace UnzerSDK\Constants;
-
 class CompanyRegistrationTypes
 {
     public const REGISTRATION_TYPE_REGISTERED = 'registered';
diff --git a/vendor/unzerdev/php-sdk/src/Constants/CompanyTypes.php b/vendor/unzerdev/php-sdk/src/Constants/CompanyTypes.php
new file mode 100644
index 0000000..c2744d1
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/src/Constants/CompanyTypes.php
@@ -0,0 +1,18 @@
+<?php
+
+namespace UnzerSDK\Constants;
+
+/**
+ * This file contains definitions of the available company types.
+ *
+ * @link     https://docs.unzer.com/
+ *
+ */
+class CompanyTypes
+{
+    public const AUTHORITY = 'authority';
+    public const ASSOCIATION = 'association';
+    public const SOLE = 'sole';
+    public const COMPANY = 'company';
+    public const OTHER = 'other';
+}
diff --git a/vendor/unzerdev/php-sdk/src/Constants/CustomerGroups.php b/vendor/unzerdev/php-sdk/src/Constants/CustomerGroups.php
new file mode 100644
index 0000000..bdbeb3c
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/src/Constants/CustomerGroups.php
@@ -0,0 +1,16 @@
+<?php
+
+namespace UnzerSDK\Constants;
+
+/**
+ * This file contains definitions of the allowed salutations.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+class CustomerGroups
+{
+    public const TOP = 'TOP';
+    public const GOOD = 'GOOD';
+    public const NEUTRAL = 'NEUTRAL';
+}
diff --git a/vendor/unzerdev/php-sdk/src/Constants/CustomerRegistrationLevel.php b/vendor/unzerdev/php-sdk/src/Constants/CustomerRegistrationLevel.php
new file mode 100644
index 0000000..c0e0537
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/src/Constants/CustomerRegistrationLevel.php
@@ -0,0 +1,12 @@
+<?php
+
+namespace UnzerSDK\Constants;
+
+/**
+ * Contains definitions of the possible registration types for "riskData" for Paylater payment types.
+ */
+class CustomerRegistrationLevel
+{
+    public const GUEST = '0';
+    public const REGISTERED = '1';
+}
diff --git a/vendor/unzerdev/php-sdk/src/Constants/CustomerTypes.php b/vendor/unzerdev/php-sdk/src/Constants/CustomerTypes.php
new file mode 100644
index 0000000..b61e0ae
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/src/Constants/CustomerTypes.php
@@ -0,0 +1,15 @@
+<?php
+
+namespace UnzerSDK\Constants;
+
+/**
+ * This file contains the different customer type strings relevant for paylater payments.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+class CustomerTypes
+{
+    public const B2C = 'B2C';
+    public const B2B = 'B2B';
+}
diff --git a/vendor/unzerdev/php-sdk/src/Constants/ExemptionType.php b/vendor/unzerdev/php-sdk/src/Constants/ExemptionType.php
new file mode 100644
index 0000000..06da4d3
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/src/Constants/ExemptionType.php
@@ -0,0 +1,14 @@
+<?php
+
+namespace UnzerSDK\Constants;
+
+/**
+ * This file contains valid exemption type values
+ *
+ * @link  https://dev.unzer.com/
+ *
+ */
+class ExemptionType
+{
+    public const LOW_VALUE_PAYMENT    = 'lvp';
+}
diff --git a/vendor/unzerdev/php-sdk/src/Constants/IdStrings.php b/vendor/unzerdev/php-sdk/src/Constants/IdStrings.php
index d80c395..f2bfd2c 100644
--- a/vendor/unzerdev/php-sdk/src/Constants/IdStrings.php
+++ b/vendor/unzerdev/php-sdk/src/Constants/IdStrings.php
@@ -1,29 +1,12 @@
 <?php
+
+namespace UnzerSDK\Constants;
+
 /**
  * This file contains the different id strings to be handled within this SDK.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
- *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Constants
  */
-namespace UnzerSDK\Constants;
-
 class IdStrings
 {
     // Transactions
@@ -32,6 +15,7 @@ class IdStrings
     public const CHARGE = 'chg';
     public const PAYOUT = 'out';
     public const SHIPMENT = 'shp';
+    public const CHARGEBACK = 'cbk';
 
     // Payment Types
     public const ALIPAY = 'ali';
@@ -40,6 +24,7 @@ class IdStrings
     public const CARD = 'crd';
     public const EPS = 'eps';
     public const GIROPAY = 'gro';
+    public const GOOGLE_PAY = 'gop';
     public const HIRE_PURCHASE_DIRECT_DEBIT = 'hdd';
     public const IDEAL = 'idl';
     public const INSTALLMENT_SECURED = 'ins';
@@ -47,8 +32,15 @@ class IdStrings
     public const INVOICE_FACTORING = 'ivf';
     public const INVOICE_GUARANTEED = 'ivg';
     public const INVOICE_SECURED = 'ivs';
+    public const KLARNA = 'kla';
+    public const PAYLATER_DIRECT_DEBIT = 'pdd';
+    public const PAYLATER_INVOICE = 'piv';
+    public const PAYLATER_INSTALLMENT = 'pit';
     public const PAYMENT_PAGE = 'ppg';
     public const PAYPAL = 'ppl';
+    public const PAYU = 'pyu';
+    public const POST_FINANCE_CARD = 'pfc';
+    public const POST_FINANCE_EFINANCE = 'pfe';
     public const PIS = 'pis';
     public const PREPAYMENT = 'ppy';
     public const PRZELEWY24 = 'p24';
@@ -72,6 +64,7 @@ class IdStrings
         self::CARD,
         self::EPS,
         self::GIROPAY,
+        self::GOOGLE_PAY,
         self::HIRE_PURCHASE_DIRECT_DEBIT,
         self::IDEAL,
         self::INSTALLMENT_SECURED,
@@ -79,8 +72,15 @@ class IdStrings
         self::INVOICE_FACTORING,
         self::INVOICE_GUARANTEED,
         self::INVOICE_SECURED,
+        self::KLARNA,
+        self::PAYLATER_DIRECT_DEBIT,
+        self::PAYLATER_INVOICE,
+        self::PAYLATER_INSTALLMENT,
         self::PAYMENT_PAGE,
         self::PAYPAL,
+        self::PAYU,
+        self::POST_FINANCE_CARD,
+        self::POST_FINANCE_EFINANCE,
         self::PIS,
         self::PREPAYMENT,
         self::PRZELEWY24,
diff --git a/vendor/unzerdev/php-sdk/src/Constants/LiabilityShiftIndicator.php b/vendor/unzerdev/php-sdk/src/Constants/LiabilityShiftIndicator.php
new file mode 100644
index 0000000..6892d6b
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/src/Constants/LiabilityShiftIndicator.php
@@ -0,0 +1,15 @@
+<?php
+
+namespace UnzerSDK\Constants;
+
+/**
+ * This file contains the valid Liability shift indicator values
+ *
+ * @link  https://dev.unzer.com/
+ *
+ */
+class LiabilityShiftIndicator
+{
+    public const ISSUER    = 'ISSUER';
+    public const MERCHANT = 'MERCHANT';
+}
diff --git a/vendor/unzerdev/php-sdk/src/Constants/PaymentState.php b/vendor/unzerdev/php-sdk/src/Constants/PaymentState.php
index 89d7a82..cea22fe 100644
--- a/vendor/unzerdev/php-sdk/src/Constants/PaymentState.php
+++ b/vendor/unzerdev/php-sdk/src/Constants/PaymentState.php
@@ -1,31 +1,15 @@
 <?php
+
+namespace UnzerSDK\Constants;
+
+use RuntimeException;
+
 /**
  * This file contains definitions of the payment states.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Constants
  */
-namespace UnzerSDK\Constants;
-
-use RuntimeException;
-
 class PaymentState
 {
     public const STATE_PENDING = 0;
@@ -34,6 +18,7 @@ class PaymentState
     public const STATE_PARTLY = 3;
     public const STATE_PAYMENT_REVIEW = 4;
     public const STATE_CHARGEBACK = 5;
+    public const STATE_CREATE = 6;
 
     public const STATE_NAME_PENDING = 'pending';
     public const STATE_NAME_COMPLETED = 'completed';
@@ -41,6 +26,7 @@ class PaymentState
     public const STATE_NAME_PARTLY = 'partly';
     public const STATE_NAME_PAYMENT_REVIEW = 'payment review';
     public const STATE_NAME_CHARGEBACK = 'chargeback';
+    public const STATE_NAME_CREATE = 'create';
 
     /**
      * Returns the name of the state with the given code.
@@ -51,7 +37,7 @@ class PaymentState
      *
      * @throws RuntimeException A RuntimeException is thrown when the $stateCode is unknown.
      */
-    public static function mapStateCodeToName($stateCode): string
+    public static function mapStateCodeToName(int $stateCode): string
     {
         switch ($stateCode) {
             case self::STATE_PENDING:
@@ -72,6 +58,9 @@ public static function mapStateCodeToName($stateCode): string
             case self::STATE_CHARGEBACK:
                 $stateName =  self::STATE_NAME_CHARGEBACK;
                 break;
+            case self::STATE_CREATE:
+                $stateName =  self::STATE_NAME_CREATE;
+                break;
             default:
                 throw new RuntimeException('Unknown payment state #' . $stateCode);
         }
@@ -88,7 +77,7 @@ public static function mapStateCodeToName($stateCode): string
      *
      * @throws RuntimeException A RuntimeException is thrown when the $stateName is unknown.
      */
-    public static function mapStateNameToCode($stateName): int
+    public static function mapStateNameToCode(string $stateName): int
     {
         switch ($stateName) {
             case self::STATE_NAME_PENDING:
diff --git a/vendor/unzerdev/php-sdk/src/Constants/RecurrenceTypes.php b/vendor/unzerdev/php-sdk/src/Constants/RecurrenceTypes.php
index 61eeb0b..23e3d79 100644
--- a/vendor/unzerdev/php-sdk/src/Constants/RecurrenceTypes.php
+++ b/vendor/unzerdev/php-sdk/src/Constants/RecurrenceTypes.php
@@ -1,36 +1,19 @@
 <?php
 
+namespace UnzerSDK\Constants;
+
 /**
  * This file contains the different recurrence types.
  *
- * Copyright (C) 2021 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  David Owusu <development@unzer.com>
- *
- * @package  UnzerSDK\Constants
  */
-namespace UnzerSDK\Constants;
-
 class RecurrenceTypes
 {
     /** @var string  Recurring with a defined interval and a defined amount.*/
     public const SCHEDULED = 'scheduled';
 
-    /** @var string  Recurring with a undefined interval and/or an undefined amount.*/
+    /** @var string  Recurring with an undefined interval and/or an undefined amount.*/
     public const UNSCHEDULED = 'unscheduled';
 
     /** @var string If the payment type should be used again for future transactions.*/
diff --git a/vendor/unzerdev/php-sdk/src/Constants/Salutations.php b/vendor/unzerdev/php-sdk/src/Constants/Salutations.php
index 65843dc..1ad4cb2 100644
--- a/vendor/unzerdev/php-sdk/src/Constants/Salutations.php
+++ b/vendor/unzerdev/php-sdk/src/Constants/Salutations.php
@@ -1,29 +1,13 @@
 <?php
+
+namespace UnzerSDK\Constants;
+
 /**
  * This file contains definitions of the allowed salutations.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Constants
  */
-namespace UnzerSDK\Constants;
-
 class Salutations
 {
     public const MR = 'mr';
diff --git a/vendor/unzerdev/php-sdk/src/Constants/ShippingTypes.php b/vendor/unzerdev/php-sdk/src/Constants/ShippingTypes.php
new file mode 100644
index 0000000..447164f
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/src/Constants/ShippingTypes.php
@@ -0,0 +1,18 @@
+<?php
+
+namespace UnzerSDK\Constants;
+
+/**
+ * This file contains definitions of the available shipping types.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+class ShippingTypes
+{
+    public const EQUALS_BILLING = 'equals-billing';
+    public const DIFFERENT_ADDRESS = 'different-address';
+    public const BRANCH_PICKUP = 'branch-pickup';
+    public const POST_OFFICE_PICKUP = 'post-office-pickup';
+    public const PACK_STATION = 'pack-station';
+}
diff --git a/vendor/unzerdev/php-sdk/src/Constants/TransactionStatus.php b/vendor/unzerdev/php-sdk/src/Constants/TransactionStatus.php
new file mode 100644
index 0000000..2284f46
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/src/Constants/TransactionStatus.php
@@ -0,0 +1,17 @@
+<?php
+
+namespace UnzerSDK\Constants;
+
+/**
+ * This file contains definitions of the status of the payment transactions.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+class TransactionStatus
+{
+    public const STATUS_PENDING = 'pending';
+    public const STATUS_SUCCESS = 'success';
+    public const STATUS_ERROR = 'error';
+    public const STATUS_RESUMED = 'resumed';
+}
diff --git a/vendor/unzerdev/php-sdk/src/Constants/TransactionTypes.php b/vendor/unzerdev/php-sdk/src/Constants/TransactionTypes.php
index 15e87fe..0a69608 100644
--- a/vendor/unzerdev/php-sdk/src/Constants/TransactionTypes.php
+++ b/vendor/unzerdev/php-sdk/src/Constants/TransactionTypes.php
@@ -1,29 +1,13 @@
 <?php
+
+namespace UnzerSDK\Constants;
+
 /**
  * This file contains definitions of the available transaction types.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Constants
  */
-namespace UnzerSDK\Constants;
-
 class TransactionTypes
 {
     public const AUTHORIZATION = 'authorize';
@@ -32,4 +16,5 @@ class TransactionTypes
     public const REFUND = 'cancel-charge';
     public const SHIPMENT = 'shipment';
     public const PAYOUT = 'payout';
+    public const CHARGEBACK = 'chargeback';
 }
diff --git a/vendor/unzerdev/php-sdk/src/Constants/WebhookEvents.php b/vendor/unzerdev/php-sdk/src/Constants/WebhookEvents.php
index 8b197d3..62faef4 100644
--- a/vendor/unzerdev/php-sdk/src/Constants/WebhookEvents.php
+++ b/vendor/unzerdev/php-sdk/src/Constants/WebhookEvents.php
@@ -1,29 +1,13 @@
 <?php
+
+namespace UnzerSDK\Constants;
+
 /**
  * This file contains the different web hook events which can be subscribed.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Constants
  */
-namespace UnzerSDK\Constants;
-
 class WebhookEvents
 {
     // all events
@@ -31,19 +15,21 @@ class WebhookEvents
 
     // authorize events
     public const AUTHORIZE = 'authorize';
-    public const AUTHORIZE_SUCCEEDED = 'authorize.succeeded';
+    public const AUTHORIZE_CANCELED = 'authorize.canceled';
+    public const AUTHORIZE_EXPIRED = 'authorize.expired';
     public const AUTHORIZE_FAILED = 'authorize.failed';
     public const AUTHORIZE_PENDING = 'authorize.pending';
-    public const AUTHORIZE_EXPIRED = 'authorize.expired';
-    public const AUTHORIZE_CANCELED = 'authorize.canceled';
+    public const AUTHORIZE_RESUMED = 'authorize.resumed';
+    public const AUTHORIZE_SUCCEEDED = 'authorize.succeeded';
 
     // charge events
     public const CHARGE = 'charge';
-    public const CHARGE_SUCCEEDED = 'charge.succeeded';
+    public const CHARGE_CANCELED = 'charge.canceled';
+    public const CHARGE_EXPIRED = 'charge.expired';
     public const CHARGE_FAILED = 'charge.failed';
     public const CHARGE_PENDING = 'charge.pending';
-    public const CHARGE_EXPIRED = 'charge.expired';
-    public const CHARGE_CANCELED = 'charge.canceled';
+    public const CHARGE_RESUMED = 'charge.resumed';
+    public const CHARGE_SUCCEEDED = 'charge.succeeded';
 
     // chargeback events
     public const CHARGEBACK = 'chargeback';
@@ -63,6 +49,7 @@ class WebhookEvents
     public const CUSTOMER_UPDATED = 'customer.updated';
 
     // payment events
+    public const PAYMENT = 'payment';
     public const PAYMENT_PENDING = 'payment.pending';
     public const PAYMENT_COMPLETED = 'payment.completed';
     public const PAYMENT_CANCELED = 'payment.canceled';
@@ -76,17 +63,19 @@ class WebhookEvents
     public const ALLOWED_WEBHOOKS = [
         self::ALL,
         self::AUTHORIZE,
-        self::AUTHORIZE_SUCCEEDED,
+        self::AUTHORIZE_CANCELED,
+        self::AUTHORIZE_EXPIRED,
         self::AUTHORIZE_FAILED,
         self::AUTHORIZE_PENDING,
-        self::AUTHORIZE_EXPIRED,
-        self::AUTHORIZE_CANCELED,
+        self::AUTHORIZE_RESUMED,
+        self::AUTHORIZE_SUCCEEDED,
         self::CHARGE,
-        self::CHARGE_SUCCEEDED,
+        self::CHARGE_CANCELED,
+        self::CHARGE_EXPIRED,
         self::CHARGE_FAILED,
         self::CHARGE_PENDING,
-        self::CHARGE_EXPIRED,
-        self::CHARGE_CANCELED,
+        self::CHARGE_RESUMED,
+        self::CHARGE_SUCCEEDED,
         self::CHARGEBACK,
         self::PAYOUT,
         self::PAYOUT_SUCCEEDED,
@@ -96,6 +85,7 @@ class WebhookEvents
         self::CUSTOMER_CREATED,
         self::CUSTOMER_DELETED,
         self::CUSTOMER_UPDATED,
+        self::PAYMENT,
         self::PAYMENT_PENDING,
         self::PAYMENT_COMPLETED,
         self::PAYMENT_CANCELED,
diff --git a/vendor/unzerdev/php-sdk/src/Exceptions/ApplepayMerchantValidationException.php b/vendor/unzerdev/php-sdk/src/Exceptions/ApplepayMerchantValidationException.php
index ba61e82..5d671c4 100644
--- a/vendor/unzerdev/php-sdk/src/Exceptions/ApplepayMerchantValidationException.php
+++ b/vendor/unzerdev/php-sdk/src/Exceptions/ApplepayMerchantValidationException.php
@@ -2,26 +2,8 @@
 /*
  *  This exception is thrown whenever the apple merchant validation request returns an error.
  *
- *  Copyright (C) 2021 - today Unzer E-Com GmbH
- *
- *  Licensed under the Apache License, Version 2.0 (the "License");
- *  you may not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS,
- *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- *
  *  @link  https://docs.unzer.com/
  *
- *  @author  David Owusu <development@unzer.com>
- *
- *  @package  UnzerSDK
- *
  */
 
 namespace UnzerSDK\Exceptions;
diff --git a/vendor/unzerdev/php-sdk/src/Exceptions/UnzerApiException.php b/vendor/unzerdev/php-sdk/src/Exceptions/UnzerApiException.php
index 0bd9a9b..39d2092 100644
--- a/vendor/unzerdev/php-sdk/src/Exceptions/UnzerApiException.php
+++ b/vendor/unzerdev/php-sdk/src/Exceptions/UnzerApiException.php
@@ -2,26 +2,10 @@
 /**
  * This exception is thrown whenever the api returns an error.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Exceptions
  */
+
 namespace UnzerSDK\Exceptions;
 
 use Exception;
@@ -40,12 +24,12 @@ class UnzerApiException extends Exception
     /**
      * UnzerApiException constructor.
      *
-     * @param string $merchantMessage
-     * @param string $clientMessage
-     * @param string $code
-     * @param string $errorId
+     * @param string      $merchantMessage
+     * @param string      $clientMessage
+     * @param string      $code
+     * @param string|null $errorId
      */
-    public function __construct($merchantMessage = '', $clientMessage = '', $code = null, $errorId = null)
+    public function __construct($merchantMessage = '', $clientMessage = '', $code = null, string $errorId = null)
     {
         $merchantMessage = empty($merchantMessage) ? static::MESSAGE : $merchantMessage;
         $this->clientMessage = empty($clientMessage) ? static::CLIENT_MESSAGE : $clientMessage;
diff --git a/vendor/unzerdev/php-sdk/src/Interfaces/CancelServiceInterface.php b/vendor/unzerdev/php-sdk/src/Interfaces/CancelServiceInterface.php
index fed9982..efa5314 100644
--- a/vendor/unzerdev/php-sdk/src/Interfaces/CancelServiceInterface.php
+++ b/vendor/unzerdev/php-sdk/src/Interfaces/CancelServiceInterface.php
@@ -2,26 +2,10 @@
 /**
  * The interface for the CancelService.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Interfaces
  */
+
 namespace UnzerSDK\Interfaces;
 
 use UnzerSDK\Constants\CancelReasonCodes;
@@ -118,7 +102,7 @@ public function cancelCharge(
 
     /**
      * Performs a Cancellation transaction on the Payment.
-     * If no amount is given a full cancel will be performed i. e. all Charges and Authorizations will be cancelled.
+     * If no amount is given a full cancel will be performed i.e. all Charges and Authorizations will be cancelled.
      *
      * @param Payment|string $payment       The Payment object or the id of the Payment to be cancelled.
      * @param float|null     $amount        The amount to be canceled.
@@ -131,17 +115,45 @@ public function cancelCharge(
      * @return Cancellation[] An array holding all Cancellation objects created with this cancel call.
      *
      * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
-     * @throws RuntimeException  A RuntimeException is thrown when there is a error while using the SDK.
+     * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
     public function cancelPayment(
         $payment,
         float $amount = null,
-        $reasonCode = CancelReasonCodes::REASON_CODE_CANCEL,
+        ?string $reasonCode = CancelReasonCodes::REASON_CODE_CANCEL,
         string $referenceText = null,
         float $amountNet = null,
         float $amountVat = null
     ): array;
 
+    /**
+     * Performs a Cancellation transaction on the Payment. Should only be used for "paylater-invoice" payments.
+     * If no Cancellation is given a full cancel will be performed.
+     *
+     * @param Payment|string    $payment      The Payment object or the id of the Payment to be cancelled.
+     * @param Cancellation|null $cancellation
+     *
+     * @return Cancellation A Cancellation object created with this cancel call.
+     *
+     * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
+     * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
+     */
+    public function cancelAuthorizedPayment($payment, ?Cancellation $cancellation = null): Cancellation;
+
+    /**
+     * Performs a Cancellation transaction on the Payment. Should only be used for "paylater-invoice" payments.
+     * If no Cancellation is given a full cancel will be performed.
+     *
+     * @param Payment|string    $payment      The Payment object or the id of the Payment to be cancelled.
+     * @param Cancellation|null $cancellation
+     *
+     * @return Cancellation A Cancellation object created with this cancel call.
+     *
+     * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
+     * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
+     */
+    public function cancelChargedPayment($payment, ?Cancellation $cancellation = null): Cancellation;
+
     /**
      * Cancel the given amount of the payments authorization.
      *
diff --git a/vendor/unzerdev/php-sdk/src/Interfaces/DebugHandlerInterface.php b/vendor/unzerdev/php-sdk/src/Interfaces/DebugHandlerInterface.php
index 8552c80..66736d8 100644
--- a/vendor/unzerdev/php-sdk/src/Interfaces/DebugHandlerInterface.php
+++ b/vendor/unzerdev/php-sdk/src/Interfaces/DebugHandlerInterface.php
@@ -2,26 +2,10 @@
 /**
  * Use this interface in order to implement a custom handler for debug information.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Interfaces
  */
+
 namespace UnzerSDK\Interfaces;
 
 interface DebugHandlerInterface
diff --git a/vendor/unzerdev/php-sdk/src/Interfaces/PaymentServiceInterface.php b/vendor/unzerdev/php-sdk/src/Interfaces/PaymentServiceInterface.php
index d3cfd31..477e03e 100644
--- a/vendor/unzerdev/php-sdk/src/Interfaces/PaymentServiceInterface.php
+++ b/vendor/unzerdev/php-sdk/src/Interfaces/PaymentServiceInterface.php
@@ -2,26 +2,10 @@
 /**
  * The interface for the PaymentService.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Interfaces
  */
+
 namespace UnzerSDK\Interfaces;
 
 use DateTime;
@@ -29,8 +13,10 @@
 use UnzerSDK\Resources\AbstractUnzerResource;
 use UnzerSDK\Resources\Basket;
 use UnzerSDK\Resources\Customer;
+use UnzerSDK\Resources\EmbeddedResources\Paylater\InstallmentPlansQuery;
 use UnzerSDK\Resources\InstalmentPlans;
 use UnzerSDK\Resources\Metadata;
+use UnzerSDK\Resources\PaylaterInstallmentPlans;
 use UnzerSDK\Resources\Payment;
 use UnzerSDK\Resources\PaymentTypes\BasePaymentType;
 use UnzerSDK\Resources\PaymentTypes\Paypage;
@@ -42,6 +28,45 @@
 
 interface PaymentServiceInterface
 {
+    /**
+     * Performs an Authorization transaction and returns the resulting Authorization resource.
+     *
+     * @param Authorization          $authorization The Authorization object containing transaction specific information.
+     * @param BasePaymentType|string $paymentType   The PaymentType object or the id of the PaymentType to use.
+     * @param Customer|string|null   $customer      The Customer object or the id of the customer resource to reference.
+     * @param Metadata|null          $metadata      The Metadata object containing custom information for the payment.
+     * @param Basket|null            $basket        The Basket object corresponding to the payment.
+     *                                              The Basket object will be created automatically if it does not exist
+     *                                              yet (i.e. has no id).
+     *
+     * @return Authorization The resulting object of the Authorization resource.
+     *
+     * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
+     * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
+     */
+    public function performAuthorization(
+        Authorization $authorization,
+        $paymentType,
+        $customer = null,
+        Metadata      $metadata = null,
+        Basket        $basket = null
+    ): Authorization;
+
+    /**
+     * Update an Authorization transaction with PATCH method and returns the resulting Authorization resource.
+     *
+     * @param Payment|string $payment       The Payment object or ID the transaction belongs to.
+     * @param Authorization  $authorization The Authorization object containing transaction specific information.
+     *                                      The Basket object will be created automatically if it does not exist
+     *                                      yet (i.e. has no id).
+     *
+     * @return Authorization The resulting object of the Authorization resource.
+     *
+     * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
+     * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
+     */
+    public function updateAuthorization($payment, Authorization $authorization): Authorization;
+
     /**
      * Performs an Authorization transaction and returns the resulting Authorization resource.
      *
@@ -65,6 +90,10 @@ interface PaymentServiceInterface
      *
      * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
+     *
+     * @deprecated since 1.2.0.0 please use performAuthorization() instead.
+     * @see performAuthorization
+     *
      */
     public function authorize(
         $amount,
@@ -81,6 +110,45 @@ public function authorize(
         $recurrenceType = null
     ): Authorization;
 
+    /**
+     * Performs a Charge transaction and returns the resulting Charge resource.
+     *
+     * @param Charge                 $charge      The Charge object containing transaction specific information.
+     * @param string|BasePaymentType $paymentType The PaymentType object or the id of the PaymentType to use.
+     * @param Customer|string|null   $customer    The Customer object or the id of the customer resource to reference.
+     * @param Metadata|null          $metadata    The Metadata object containing custom information for the payment.
+     * @param Basket|null            $basket      The Basket object corresponding to the payment.
+     *                                            The Basket object will be created automatically if it does not exist
+     *                                            yet (i.e. has no id).
+     *
+     * @return Charge The resulting object of the Charge resource.
+     *
+     * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
+     * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
+     */
+    public function performCharge(
+        Charge   $charge,
+        $paymentType,
+        $customer = null,
+        Metadata $metadata = null,
+        Basket   $basket = null
+    ): Charge;
+
+    /**
+     * Update a Charge transaction with PATCH method and returns the resulting Charge resource.
+     *
+     * @param Payment|string $payment The Payment object or ID the transaction belongs to.
+     * @param Charge         $charge  The Charge object containing transaction specific information.
+     *                                The Basket object will be created automatically if it does not exist
+     *                                yet (i.e. has no id).
+     *
+     * @return Charge The resulting object of the Charge resource.
+     *
+     * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
+     * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
+     */
+    public function updateCharge($payment, Charge $charge): Charge;
+
     /**
      * Performs a Charge transaction and returns the resulting Charge resource.
      *
@@ -105,6 +173,10 @@ public function authorize(
      *
      * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
+     *
+     * @deprecated since 1.2.0.0 please use performCharge() instead.
+     * @see performCharge
+     *
      */
     public function charge(
         $amount,
@@ -121,6 +193,23 @@ public function charge(
         $recurrenceType = null
     ): Charge;
 
+    /**
+     * Performs a Charge transaction for a previously authorized payment.
+     * To perform a full charge of the authorized amount leave the amount null.
+     *
+     * @param string|Payment $payment The Payment object the Authorization to charge belongs to.
+     * @param Charge         $charge  The Charge object containing transaction specific information.
+     *
+     * @return Charge The resulting object of the Charge resource.
+     *
+     * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
+     * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
+     */
+    public function performChargeOnPayment(
+        $payment,
+        Charge $charge
+    ): Charge;
+
     /**
      * Performs a Charge transaction for the Authorization of the given Payment object.
      * To perform a full charge of the authorized amount leave the amount null.
@@ -134,6 +223,9 @@ public function charge(
      *
      * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
+     *
+     * @deprecated since 1.2.0.0 please use performChargeOnPayment() instead.
+     *
      */
     public function chargeAuthorization(
         $payment,
@@ -147,7 +239,6 @@ public function chargeAuthorization(
      *
      * @param Payment|string $payment   The Payment object to be charged.
      * @param float|null     $amount    The amount to charge.
-     * @param string|null    $currency  The Currency of the charged amount.
      * @param string|null    $orderId   The order id from the shop.
      * @param string|null    $invoiceId The invoice id from the shop.
      *
@@ -155,11 +246,13 @@ public function chargeAuthorization(
      *
      * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
+     *
+     * @deprecated since 1.2.0.0 please use performChargeOnPayment() instead.
+     *
      */
     public function chargePayment(
         $payment,
         float $amount = null,
-        string $currency = null,
         string $orderId = null,
         string $invoiceId = null
     ): Charge;
@@ -186,16 +279,16 @@ public function chargePayment(
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
     public function payout(
-        $amount,
-        $currency,
+        float    $amount,
+        string   $currency,
         $paymentType,
-        $returnUrl,
+        string   $returnUrl,
         $customer = null,
-        $orderId = null,
-        $metadata = null,
-        $basket = null,
-        $invoiceId = null,
-        $referenceText = null
+        string   $orderId = null,
+        Metadata $metadata = null,
+        Basket   $basket = null,
+        string   $invoiceId = null,
+        string   $referenceText = null
     ): Payout;
 
     /**
@@ -234,9 +327,9 @@ public function ship($payment, string $invoiceId = null, string $orderId = null)
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
     public function initPayPageCharge(
-        Paypage $paypage,
+        Paypage  $paypage,
         Customer $customer = null,
-        Basket $basket = null,
+        Basket   $basket = null,
         Metadata $metadata = null
     ): Paypage;
 
@@ -262,9 +355,9 @@ public function initPayPageCharge(
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
     public function initPayPageAuthorize(
-        Paypage $paypage,
+        Paypage  $paypage,
         Customer $customer = null,
-        Basket $basket = null,
+        Basket   $basket = null,
         Metadata $metadata = null
     ): Paypage;
 
@@ -282,9 +375,18 @@ public function initPayPageAuthorize(
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
     public function fetchInstallmentPlans(
-        $amount,
-        $currency,
-        $effectiveInterest,
+        float    $amount,
+        string   $currency,
+        float    $effectiveInterest,
         DateTime $orderDate = null
     ): InstalmentPlans;
+
+    /**
+     * Returns an InstallmentPlans object containing all available instalment plan options.
+     *
+     * @param InstallmentPlansQuery $plansRequest
+     *
+     * @return PaylaterInstallmentPlans
+     */
+    public function fetchPaylaterInstallmentPlans(InstallmentPlansQuery $plansRequest): PaylaterInstallmentPlans;
 }
diff --git a/vendor/unzerdev/php-sdk/src/Interfaces/ResourceServiceInterface.php b/vendor/unzerdev/php-sdk/src/Interfaces/ResourceServiceInterface.php
index 94c058e..ce977b2 100644
--- a/vendor/unzerdev/php-sdk/src/Interfaces/ResourceServiceInterface.php
+++ b/vendor/unzerdev/php-sdk/src/Interfaces/ResourceServiceInterface.php
@@ -2,40 +2,27 @@
 /**
  * The interface for the ResourceService.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
+ * @link     https://docs.unzer.com/
  *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @link  https://docs.unzer.com/
- *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Interfaces
  */
+
 namespace UnzerSDK\Interfaces;
 
 use UnzerSDK\Exceptions\UnzerApiException;
 use UnzerSDK\Resources\AbstractUnzerResource;
 use UnzerSDK\Resources\Basket;
+use UnzerSDK\Resources\Config;
 use UnzerSDK\Resources\Customer;
 use UnzerSDK\Resources\Keypair;
 use UnzerSDK\Resources\Metadata;
 use UnzerSDK\Resources\Payment;
 use UnzerSDK\Resources\PaymentTypes\BasePaymentType;
+use UnzerSDK\Resources\PaymentTypes\Paypage;
 use UnzerSDK\Resources\Recurring;
 use UnzerSDK\Resources\TransactionTypes\Authorization;
 use UnzerSDK\Resources\TransactionTypes\Cancellation;
 use UnzerSDK\Resources\TransactionTypes\Charge;
+use UnzerSDK\Resources\TransactionTypes\Chargeback;
 use UnzerSDK\Resources\TransactionTypes\Payout;
 use UnzerSDK\Resources\TransactionTypes\Shipment;
 use RuntimeException;
@@ -63,14 +50,14 @@ public function fetchPayout($payment): Payout;
      * @param string|BasePaymentType $paymentType    The payment to activate recurring payment for.
      * @param string                 $returnUrl      The URL to which the customer gets redirected in case of a 3ds
      *                                               transaction
-     * @param string                 $recurrenceType Recurrence type used for recurring payment.
+     * @param string|null            $recurrenceType Recurrence type used for recurring payment.
      *
      * @return Recurring The recurring object.
      *
      * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
-    public function activateRecurringPayment($paymentType, $returnUrl, string $recurrenceType = null): Recurring;
+    public function activateRecurringPayment($paymentType, string $returnUrl, string $recurrenceType = null): Recurring;
 
     /**
      * Fetch and return payment by given payment id or payment object.
@@ -95,7 +82,20 @@ public function fetchPayment($payment): Payment;
      * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
-    public function fetchPaymentByOrderId($orderId): Payment;
+    public function fetchPaymentByOrderId(string $orderId): Payment;
+
+    /**
+     * Fetch and return payPage by given payPageId or payPage object.
+     * If a payPage object is given it will be updated as well, thus you do not rely on the returned object.
+     *
+     * @param Paypage|string $payPage The payment object or paymentId to fetch.
+     *
+     * @return Paypage The fetched payPage object.
+     *
+     * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
+     * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
+     */
+    public function fetchPayPage($payPage): Paypage;
 
     /**
      * Fetch public key and configured payment types from API.
@@ -107,12 +107,12 @@ public function fetchPaymentByOrderId($orderId): Payment;
      * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
-    public function fetchKeypair($detailed = false): Keypair;
+    public function fetchKeypair(bool $detailed = false): Keypair;
 
     /**
      * Create Metadata resource.
      *
-     * @param Metadata $metadata The Metadata object to be created.
+     * @param Metadata|string $metadata The Metadata object to be created.
      *
      * @return Metadata The fetched Metadata resource.
      *
@@ -146,7 +146,11 @@ public function fetchMetadata($metadata): Metadata;
     public function createBasket(Basket $basket): Basket;
 
     /**
-     * Fetches and returns the given Basket (by object or id).
+     * Fetches and returns the given Basket (by object or id). Since the PAPI provides 2 basket versions, this method performs up to two request.
+     * Firstly the basket gets fetched from the "v2" endpoint.
+     * Only If PAPI returns a specific "basket not found" error the function tries to fetch from the "v1" basket endpoint.
+     *
+     * @see \UnzerSDK\Constants\ApiResponseCodes::API_ERROR_BASKET_NOT_FOUND
      *
      * @param Basket|string $basket Basket object or id of basket to be fetched.
      *
@@ -205,7 +209,7 @@ public function updatePaymentType(BasePaymentType $paymentType): BasePaymentType
      * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
-    public function fetchPaymentType($typeId): BasePaymentType;
+    public function fetchPaymentType(string $typeId): BasePaymentType;
 
     /**
      * Create an API resource for the given customer object.
@@ -253,7 +257,7 @@ public function fetchCustomer($customer): Customer;
      * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
-    public function fetchCustomerByExtCustomerId($customerId): Customer;
+    public function fetchCustomerByExtCustomerId(string $customerId): Customer;
 
     /**
      * Update and return a Customer object via API.
@@ -303,7 +307,7 @@ public function fetchAuthorization($payment): Authorization;
      * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
-    public function fetchChargeById($payment, $chargeId): Charge;
+    public function fetchChargeById($payment, string $chargeId): Charge;
 
     /**
      * Update local charge object.
@@ -317,6 +321,32 @@ public function fetchChargeById($payment, $chargeId): Charge;
      */
     public function fetchCharge(Charge $charge): Charge;
 
+    /**
+     * Fetch a chargeback object by combination of payment id, chargeback id and charge id.
+     * Chargeback ids are not unique to a merchant but to the payment.
+     *
+     * @param Payment|string $payment      The payment object or payment id to fetch the authorization from.
+     * @param string         $chargebackId The id of the chargeback to fetch.
+     *
+     * @return Chargeback|AbstractUnzerResource The fetched chargeback.
+     *
+     * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
+     * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
+     */
+    public function fetchChargebackById(string $paymentId, string $chargebackId, ?string $chargeId): Chargeback;
+
+    /**
+     * Update local chargeback object.
+     *
+     * @param Chargeback $chargeback The chargeback object to be fetched.
+     *
+     * @return Chargeback|AbstractUnzerResource The fetched chargeback.
+     *
+     * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
+     * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
+     */
+    public function fetchChargeback(Chargeback $chargeback): Chargeback;
+
     /**
      * Fetch a cancellation on an authorization (aka reversal).
      *
@@ -328,7 +358,7 @@ public function fetchCharge(Charge $charge): Charge;
      * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
-    public function fetchReversalByAuthorization($authorization, $cancellationId): Cancellation;
+    public function fetchReversalByAuthorization(Authorization $authorization, string $cancellationId): Cancellation;
 
     /**
      * Fetches a cancellation resource on an authorization (aka reversal) via payment and cancellation id.
@@ -341,7 +371,7 @@ public function fetchReversalByAuthorization($authorization, $cancellationId): C
      * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
-    public function fetchReversal($payment, $cancellationId): Cancellation;
+    public function fetchReversal($payment, string $cancellationId): Cancellation;
 
     /**
      * Fetch a cancellation resource on a charge (aka refund) via id.
@@ -355,7 +385,7 @@ public function fetchReversal($payment, $cancellationId): Cancellation;
      * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
-    public function fetchRefundById($payment, $chargeId, $cancellationId): Cancellation;
+    public function fetchRefundById($payment, string $chargeId, string $cancellationId): Cancellation;
 
     /**
      * Fetch a cancellation resource on a Charge (aka refund).
@@ -368,7 +398,33 @@ public function fetchRefundById($payment, $chargeId, $cancellationId): Cancellat
      * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
-    public function fetchRefund(Charge $charge, $cancellationId): Cancellation;
+    public function fetchRefund(Charge $charge, string $cancellationId): Cancellation;
+
+    /**
+     * Fetch a cancellation resource of a charged payment (aka refund).
+     *
+     * @param Payment|string $payment        The payment object to fetch the cancellation for.
+     * @param string         $cancellationId The id of the cancellation to fetch.
+     *
+     * @return Cancellation The fetched cancellation (refund).
+     *
+     * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
+     * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
+     */
+    public function fetchPaymentRefund($payment, string $cancellationId): Cancellation;
+
+    /**
+     * Fetch a cancellation resource of an authorized payment (aka reversal).
+     *
+     * @param Payment|string $payment        The payment object to fetch the cancellation for.
+     * @param string         $cancellationId The id of the cancellation to fetch.
+     *
+     * @return Cancellation The fetched cancellation (refund).
+     *
+     * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
+     * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
+     */
+    public function fetchPaymentReversal($payment, string $cancellationId): Cancellation;
 
     /**
      * Fetch a shipment resource of the given payment by id.
@@ -381,5 +437,19 @@ public function fetchRefund(Charge $charge, $cancellationId): Cancellation;
      * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
-    public function fetchShipment($payment, $shipmentId): Shipment;
+    public function fetchShipment($payment, string $shipmentId): Shipment;
+
+    /**
+     * Get the configuration for the given payment type.
+     *
+     * @param BasePaymentType $paymentType
+     * @param Config|null     $config      Can be used to add query params to the GET request.
+     *
+     * @return Config
+     *
+     * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
+     *                           This will also occur if the given payment type has no configuration.
+     * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
+     */
+    public function fetchConfig(BasePaymentType $paymentType, ?Config $config = null): Config;
 }
diff --git a/vendor/unzerdev/php-sdk/src/Interfaces/UnzerParentInterface.php b/vendor/unzerdev/php-sdk/src/Interfaces/UnzerParentInterface.php
index af1fb64..fae0a5b 100644
--- a/vendor/unzerdev/php-sdk/src/Interfaces/UnzerParentInterface.php
+++ b/vendor/unzerdev/php-sdk/src/Interfaces/UnzerParentInterface.php
@@ -2,26 +2,10 @@
 /**
  * This interface defines the methods for a parent Unzer object.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Interfaces
  */
+
 namespace UnzerSDK\Interfaces;
 
 use UnzerSDK\Unzer;
@@ -47,5 +31,5 @@ public function getUnzerObject(): Unzer;
      *
      * @return string
      */
-    public function getUri($appendId = true, $httpMethod = HttpAdapterInterface::REQUEST_GET): string;
+    public function getUri(bool $appendId = true, string $httpMethod = HttpAdapterInterface::REQUEST_GET): string;
 }
diff --git a/vendor/unzerdev/php-sdk/src/Interfaces/WebhookServiceInterface.php b/vendor/unzerdev/php-sdk/src/Interfaces/WebhookServiceInterface.php
index f9ae2d8..48c89e2 100644
--- a/vendor/unzerdev/php-sdk/src/Interfaces/WebhookServiceInterface.php
+++ b/vendor/unzerdev/php-sdk/src/Interfaces/WebhookServiceInterface.php
@@ -2,26 +2,10 @@
 /**
  * The interface for the WebhookService.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Interfaces
  */
+
 namespace UnzerSDK\Interfaces;
 
 use UnzerSDK\Exceptions\UnzerApiException;
@@ -67,7 +51,7 @@ public function fetchWebhook($webhook): Webhook;
      * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
-    public function updateWebhook($webhook): Webhook;
+    public function updateWebhook(Webhook $webhook): Webhook;
 
     /**
      * Deletes the given Webhook resource.
@@ -122,5 +106,5 @@ public function registerMultipleWebhooks(string $url, array $events): array;
      * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
-    public function fetchResourceFromEvent($eventJson = null): AbstractUnzerResource;
+    public function fetchResourceFromEvent(string $eventJson = null): AbstractUnzerResource;
 }
diff --git a/vendor/unzerdev/php-sdk/src/Resources/AbstractUnzerResource.php b/vendor/unzerdev/php-sdk/src/Resources/AbstractUnzerResource.php
index 69aa655..6124a0c 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/AbstractUnzerResource.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/AbstractUnzerResource.php
@@ -2,30 +2,15 @@
 /**
  * This is the base class for all resource types managed by the api.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Resources
  */
+
 namespace UnzerSDK\Resources;
 
 use DateTime;
 use UnzerSDK\Adapter\HttpAdapterInterface;
+use UnzerSDK\Constants\AdditionalAttributes;
 use UnzerSDK\Exceptions\UnzerApiException;
 use UnzerSDK\Unzer;
 use UnzerSDK\Interfaces\UnzerParentInterface;
@@ -36,12 +21,19 @@
 use ReflectionProperty;
 use RuntimeException;
 use stdClass;
+
 use function count;
 use function is_array;
 use function is_callable;
 use function is_float;
 use function is_object;
 
+/**
+ * This is a class representing a resource on Unzer payment API.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
 abstract class AbstractUnzerResource implements UnzerParentInterface
 {
     /** @var string $id */
@@ -59,8 +51,6 @@ abstract class AbstractUnzerResource implements UnzerParentInterface
     /** @var array $additionalAttributes */
     protected $additionalAttributes = [];
 
-    //<editor-fold desc="Getters/Setters">
-
     /**
      * Returns the API name of the resource.
      *
@@ -84,22 +74,22 @@ public function getId(): ?string
     /**
      * This setter must be public to enable fetching a resource by setting the id and then call fetch.
      *
-     * @param int $resourceId
+     * @param string|null $resourceId
      *
      * @return $this
      */
-    public function setId($resourceId): self
+    public function setId(?string $resourceId): self
     {
         $this->id = $resourceId;
         return $this;
     }
 
     /**
-     * @param UnzerParentInterface $parentResource
+     * @param UnzerParentInterface|null $parentResource
      *
      * @return $this
      */
-    public function setParentResource($parentResource): self
+    public function setParentResource(?UnzerParentInterface $parentResource): self
     {
         $this->parentResource = $parentResource;
         return $this;
@@ -160,6 +150,16 @@ public function setSpecialParams(array $specialParams): self
         return $this;
     }
 
+    /**
+     * Returns the API version for this resource.
+     *
+     * @return string
+     */
+    public function getApiVersion(): string
+    {
+        return Unzer::API_VERSION;
+    }
+
     /**
      * @param array $additionalAttributes
      *
@@ -179,8 +179,11 @@ protected function setAdditionalAttributes(array $additionalAttributes): Abstrac
      * @param mixed  $value
      *
      * @return AbstractUnzerResource
+     *
+     * @see AdditionalAttributes
+     *
      */
-    protected function setAdditionalAttribute(string $attribute, $value): AbstractUnzerResource
+    public function setAdditionalAttribute(string $attribute, $value): AbstractUnzerResource
     {
         $this->additionalAttributes[$attribute] = $value;
         return $this;
@@ -191,16 +194,22 @@ protected function setAdditionalAttribute(string $attribute, $value): AbstractUn
      *
      * @param string $attribute
      *
+     * @see AdditionalAttributes
+     *
      * @return mixed
      */
-    protected function getAdditionalAttribute(string $attribute)
+    public function getAdditionalAttribute(string $attribute)
     {
         return $this->additionalAttributes[$attribute] ?? null;
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Helpers">
+    /**
+     * @return array
+     */
+    public function getAdditionalAttributes()
+    {
+        return $this->additionalAttributes;
+    }
 
     /**
      * {@inheritDoc}
@@ -219,7 +228,7 @@ public function getUnzerObject(): Unzer
      *
      * @throws RuntimeException
      */
-    public function getUri($appendId = true, $httpMethod = HttpAdapterInterface::REQUEST_GET): string
+    public function getUri(bool $appendId = true, string $httpMethod = HttpAdapterInterface::REQUEST_GET): string
     {
         $uri = [rtrim($this->getParentResource()->getUri(), '/'), $this->getResourcePath($httpMethod)];
         if ($appendId) {
@@ -236,7 +245,7 @@ public function getUri($appendId = true, $httpMethod = HttpAdapterInterface::REQ
     /**
      * This method updates the properties of the resource.
      *
-     * @param $object
+     * @param          $object
      * @param stdClass $response
      */
     private static function updateValues($object, stdClass $response): void
@@ -270,10 +279,6 @@ private static function updateValues($object, stdClass $response): void
         }
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Resource service facade">
-
     /**
      * @return ResourceService
      *
@@ -312,17 +317,13 @@ protected function fetchResource(AbstractUnzerResource $resource): void
         $this->getResourceService()->fetchResource($resource);
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Serialization">
-
     /**
      * Specify data which should be serialized to JSON
      *
      * @link http://php.net/manual/en/jsonserializable.jsonserialize.php
      *
-     * @return mixed data which can be serialized by <b>json_encode</b>,
-     *               which is a value of any type other than a resource.
+     * @return false|string data which can be serialized by <b>json_encode</b>,
+     *                      which is a value of any type other than a resource.
      */
     public function jsonSerialize()
     {
@@ -336,53 +337,13 @@ public function jsonSerialize()
      */
     public function expose()
     {
-        // Add resources properties
-        $properties = get_object_vars($this);
-        foreach ($properties as $property => $value) {
-            if (self::propertyShouldBeSkipped($property, $value)) {
-                unset($properties[$property]);
-                continue;
-            }
-
-            // expose child objects if possible
-            if ($value instanceof self) {
-                $value = $value->expose();
-            }
-
-            // reduce floats to 4 decimal places and update the property in object
-            if (is_float($value)) {
-                $value = ValueService::limitFloats($value);
-                self::setItemProperty($this, $property, $value);
-            }
-
-            // handle additional values
-            if ($property === 'additionalAttributes') {
-                if (!is_array($value) || empty($value)) {
-                    unset($properties[$property]);
-                    continue;
-                }
-                $value = $this->exposeAdditionalAttributes($value);
-            }
-
-            $properties[$property] = $value;
-        }
-        //---------------------
-
-        // Add linked resources if any
-        $resources = [];
-        /**
-         * @var string                $attributeName
-         * @var AbstractUnzerResource $linkedResource
-         */
-        foreach ($this->getLinkedResources() as $attributeName => $linkedResource) {
-            $resources[$attributeName . 'Id'] = $linkedResource ? $linkedResource->getId() : '';
-        }
+        $properties = $this->exposeProperties();
+        $resources  = $this->exposeLinkedResources();
 
         if (count($resources) > 0) {
             ksort($resources);
             $properties['resources'] = $resources;
         }
-        //---------------------
 
         // Add special params if any
         foreach ($this->getSpecialParams() as $attributeName => $specialParam) {
@@ -395,11 +356,11 @@ public function expose()
     }
 
     /**
-     * @param $value
+     * @param array $value
      *
      * @return array
      */
-    private function exposeAdditionalAttributes($value): array
+    private function exposeAdditionalAttributes(array $value): array
     {
         foreach ($value as $attributeName => $attributeValue) {
             $attributeValue        = ValueService::limitFloats($attributeValue);
@@ -412,12 +373,12 @@ private function exposeAdditionalAttributes($value): array
     /**
      * Returns true if the given property should be skipped.
      *
-     * @param $property
-     * @param $value
+     * @param string $property
+     * @param        $value
      *
      * @return bool
      */
-    private static function propertyShouldBeSkipped($property, $value): bool
+    private static function propertyShouldBeSkipped(string $property, $value): bool
     {
         $skipProperty = false;
 
@@ -454,12 +415,8 @@ private static function setItemProperty($item, $key, $value): void
         }
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Overridable Methods">
-
     /**
-     * Return the resources which should be referenced by Id within the resource section of the resource data.
+     * Return the resources which should be referenced by ID within the resource section of the resource data.
      * Override this to define the linked resources.
      *
      * @return array
@@ -477,7 +434,7 @@ public function getLinkedResources(): array
      *
      * @return string
      */
-    protected function getResourcePath($httpMethod = HttpAdapterInterface::REQUEST_GET): string
+    protected function getResourcePath(string $httpMethod = HttpAdapterInterface::REQUEST_GET): string
     {
         return self::getResourceName($httpMethod);
     }
@@ -488,9 +445,10 @@ protected function getResourcePath($httpMethod = HttpAdapterInterface::REQUEST_G
      *
      * @param stdClass $response
      * @param string   $method
+     *
      * @noinspection PhpUnusedParameterInspection
      */
-    public function handleResponse(stdClass $response, $method = HttpAdapterInterface::REQUEST_GET): void
+    public function handleResponse(stdClass $response, string $method = HttpAdapterInterface::REQUEST_GET): void
     {
         self::updateValues($this, $response);
 
@@ -517,5 +475,73 @@ public function getExternalId(): ?string
         return null;
     }
 
-    //</editor-fold>
+    /**
+     * Exposes properties
+     *
+     * @return array
+     */
+    private function exposeProperties(): array
+    {
+        $properties = get_object_vars($this);
+        foreach ($properties as $property => $value) {
+            if (self::propertyShouldBeSkipped($property, $value)) {
+                unset($properties[$property]);
+                continue;
+            }
+
+            // expose child objects if possible
+            if ($value instanceof self) {
+                $value = $value->expose();
+            }
+
+            // reduce floats to 4 decimal places and update the property in object
+            if (is_float($value)) {
+                $value = ValueService::limitFloats($value);
+                self::setItemProperty($this, $property, $value);
+            }
+
+            // handle additional values
+            if ($property === 'additionalAttributes') {
+                if (!is_array($value) || empty($value)) {
+                    unset($properties[$property]);
+                    continue;
+                }
+                $value = $this->exposeAdditionalAttributes($value);
+            }
+
+            // handle additionalTransactionData values
+            if ($property === 'additionalTransactionData') {
+                foreach ($value as $key => $data) {
+                    if ($data instanceof self) {
+                        $value->$key = $data->expose();
+                    }
+                }
+            }
+
+            $properties[$property] = $value;
+        }
+
+        return $properties;
+    }
+
+    /**
+     * Expose linked resources if any.
+     *
+     * @return array
+     */
+    private function exposeLinkedResources(): array
+    {
+        $exposedResources = [];
+        /**
+         * @var string                $attributeName
+         * @var AbstractUnzerResource $linkedResource
+         */
+        foreach ($this->getLinkedResources() as $attributeName => $linkedResource) {
+            $resourceId = $linkedResource ? $linkedResource->getId() : null;
+            if ($resourceId !== null) {
+                $exposedResources[$attributeName . 'Id'] = $resourceId;
+            }
+        }
+        return $exposedResources;
+    }
 }
diff --git a/vendor/unzerdev/php-sdk/src/Resources/Basket.php b/vendor/unzerdev/php-sdk/src/Resources/Basket.php
index 4f89d70..3ce76ec 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/Basket.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/Basket.php
@@ -1,45 +1,45 @@
 <?php
-/**
- * This represents the basket resource.
- *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @link  https://docs.unzer.com/
- *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Resources
- */
+
 namespace UnzerSDK\Resources;
 
 use UnzerSDK\Adapter\HttpAdapterInterface;
 use UnzerSDK\Resources\EmbeddedResources\BasketItem;
 use stdClass;
+
 use function count;
 
+/**
+ * This represents the basket resource.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
 class Basket extends AbstractUnzerResource
 {
-    /** @var float $amountTotalGross */
+    /**
+     * @var float $amountTotalGross
+     *
+     * @deprecated since 1.1.5.0 @see $totalValueGross.
+     */
     protected $amountTotalGross = 0.0;
 
-    /** @var float $amountTotalDiscount */
+    /**
+     * @var float $amountTotalDiscount
+     *
+     * @deprecated since 1.1.5.0 @see Please set $amountDiscountPerUnitGross for each element of $basketItems instead.
+     */
     protected $amountTotalDiscount = 0.0;
 
-    /** @var float $amountTotalVat */
+    /**
+     * @var float $amountTotalVat
+     *
+     * @deprecated since 1.1.5.0  Please set the $vat in percent for each element of $basketItems instead, if not already happened. The actual amount is not required anymore.
+     */
     protected $amountTotalVat = 0.0;
 
+    /** @var float $totalValueGross */
+    protected $totalValueGross = 0.0;
+
     /** @var string $currencyCode */
     protected $currencyCode;
 
@@ -49,12 +49,14 @@ class Basket extends AbstractUnzerResource
     /** @var string $note */
     protected $note;
 
-    /** @var array $basketItems */
+    /** @var BasketItem[] $basketItems */
     private $basketItems;
 
     /**
      * Basket constructor.
      *
+     * @deprecated since 1.1.5.0 Please call constructor without parameters and use setter functions instead.
+     *
      * @param float  $amountTotalGross
      * @param string $currencyCode
      * @param string $orderId
@@ -72,10 +74,10 @@ public function __construct(
         $this->setBasketItems($basketItems);
     }
 
-    //<editor-fold desc="Getters/Setters">
-
     /**
      * @return float
+     *
+     * @deprecated since 1.1.5.0 @see getTotalValueGross().
      */
     public function getAmountTotalGross(): float
     {
@@ -85,6 +87,8 @@ public function getAmountTotalGross(): float
     /**
      * @param float $amountTotalGross
      *
+     * @deprecated since 1.1.5.0 @see setTotalValueGross().
+     *
      * @return Basket
      */
     public function setAmountTotalGross(float $amountTotalGross): Basket
@@ -96,6 +100,27 @@ public function setAmountTotalGross(float $amountTotalGross): Basket
     /**
      * @return float
      */
+    public function getTotalValueGross(): float
+    {
+        return $this->totalValueGross;
+    }
+
+    /**
+     * @param float $totalValueGross
+     *
+     * @return Basket
+     */
+    public function setTotalValueGross(float $totalValueGross): Basket
+    {
+        $this->totalValueGross = $totalValueGross;
+        return $this;
+    }
+
+    /**
+     * @return float
+     *
+     * @deprecated since 1.1.5.0 Property is redundant and is no longer needed.
+     */
     public function getAmountTotalDiscount(): float
     {
         return $this->amountTotalDiscount;
@@ -104,6 +129,8 @@ public function getAmountTotalDiscount(): float
     /**
      * @param float $amountTotalDiscount
      *
+     * @deprecated since 1.1.5.0 Property is redundant and is no longer needed.
+     *
      * @return Basket
      */
     public function setAmountTotalDiscount(float $amountTotalDiscount): Basket
@@ -114,6 +141,8 @@ public function setAmountTotalDiscount(float $amountTotalDiscount): Basket
 
     /**
      * @return float
+     *
+     * @deprecated since 1.1.5.0 Property is redundant and is no longer needed.
      */
     public function getAmountTotalVat(): float
     {
@@ -123,6 +152,8 @@ public function getAmountTotalVat(): float
     /**
      * @param float $amountTotalVat
      *
+     * @deprecated since 1.1.5.0 Property is redundant and is no longer needed.
+     *
      * @return Basket
      */
     public function setAmountTotalVat(float $amountTotalVat): Basket
@@ -171,7 +202,7 @@ public function getNote(): ?string
      *
      * @return Basket
      */
-    public function setNote($note): Basket
+    public function setNote(?string $note): Basket
     {
         $this->note = $note;
         return $this;
@@ -241,15 +272,11 @@ public function addBasketItem(BasketItem $basketItem): Basket
      *
      * @return BasketItem|null
      */
-    public function getBasketItemByIndex($index): ?BasketItem
+    public function getBasketItemByIndex(int $index): ?BasketItem
     {
         return $this->basketItems[$index] ?? null;
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Overridable Methods">
-
     /**
      * Add the dynamically set meta data.
      * {@inheritDoc}
@@ -269,6 +296,17 @@ public function expose(): array
         return $returnArray;
     }
 
+    /**
+     * {@inheritDoc}
+     */
+    public function getApiVersion(): string
+    {
+        if (!empty($this->getTotalValueGross())) {
+            return 'v2';
+        }
+        return parent::getApiVersion();
+    }
+
     /**
      * Returns the key of the last BasketItem in the Array.
      *
@@ -283,7 +321,7 @@ private function getKeyOfLastBasketItemAdded()
     /**
      * {@inheritDoc}
      */
-    protected function getResourcePath($httpMethod = HttpAdapterInterface::REQUEST_GET): string
+    protected function getResourcePath(string $httpMethod = HttpAdapterInterface::REQUEST_GET): string
     {
         return 'baskets';
     }
@@ -291,7 +329,7 @@ protected function getResourcePath($httpMethod = HttpAdapterInterface::REQUEST_G
     /**
      * {@inheritDoc}
      */
-    public function handleResponse(stdClass $response, $method = HttpAdapterInterface::REQUEST_GET): void
+    public function handleResponse(stdClass $response, string $method = HttpAdapterInterface::REQUEST_GET): void
     {
         parent::handleResponse($response, $method);
 
@@ -305,6 +343,4 @@ public function handleResponse(stdClass $response, $method = HttpAdapterInterfac
             $this->setBasketItems($items);
         }
     }
-
-    //</editor-fold>
 }
diff --git a/vendor/unzerdev/php-sdk/src/Resources/Config.php b/vendor/unzerdev/php-sdk/src/Resources/Config.php
new file mode 100644
index 0000000..8d61ce0
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/src/Resources/Config.php
@@ -0,0 +1,167 @@
+<?php
+
+namespace UnzerSDK\Resources;
+
+use UnzerSDK\Adapter\HttpAdapterInterface;
+
+/*
+ *  This represents the config resource.
+ *
+ *  @link  https://docs.unzer.com/
+ *
+ */
+class Config extends AbstractUnzerResource
+{
+    /** @var string | null */
+    private $dataPrivacyConsent;
+
+    /** @var string | null */
+    private $dataPrivacyDeclaration;
+
+    /** @var string | null */
+    private $termsAndConditions;
+
+    /** @var array $queryParams Query parameter used for GET request */
+    private $queryParams = [];
+
+    private const QUERY_KEY_CUSTOMER_TYPE = 'customerType';
+    private const PARAM_KEY_COUNTRY = 'country';
+
+    /**
+     * @return string
+     */
+    public function getDataPrivacyConsent(): ?string
+    {
+        return $this->dataPrivacyConsent;
+    }
+
+    /**
+     * @param string $dataPrivacyConsent
+     *
+     * @return Config
+     */
+    public function setDataPrivacyConsent(string $dataPrivacyConsent): Config
+    {
+        $this->dataPrivacyConsent = $dataPrivacyConsent;
+        return $this;
+    }
+
+    /**
+     * @return string
+     */
+    public function getDataPrivacyDeclaration(): ?string
+    {
+        return $this->dataPrivacyDeclaration;
+    }
+
+    /**
+     * @param string $dataPrivacyDeclaration
+     *
+     * @return Config
+     */
+    public function setDataPrivacyDeclaration(string $dataPrivacyDeclaration): Config
+    {
+        $this->dataPrivacyDeclaration = $dataPrivacyDeclaration;
+        return $this;
+    }
+
+    /**
+     * @return string
+     */
+    public function getTermsAndConditions(): ?string
+    {
+        return $this->termsAndConditions;
+    }
+
+    /**
+     * @param string $termsAndConditions
+     *
+     * @return Config
+     */
+    public function setTermsAndConditions(string $termsAndConditions): Config
+    {
+        $this->termsAndConditions = $termsAndConditions;
+        return $this;
+    }
+
+    /** Get query parameter used for GET request.
+     *
+     * @return array
+     */
+    public function getQueryParams(): array
+    {
+        return $this->queryParams;
+    }
+
+    /** Set query parameter used for GET request.
+     *
+     * @param array $queryParams
+     *
+     * @return Config
+     */
+    public function setQueryParams(array $queryParams): Config
+    {
+        $this->queryParams = $queryParams;
+        return $this;
+    }
+
+    /** Get the 'customerType' value from query parameter array.
+     *
+     * @return string
+     */
+    public function getCustomerType(): ?string
+    {
+        return ($this->queryParams[self::QUERY_KEY_CUSTOMER_TYPE] ?? null);
+    }
+
+    /** Set the 'customerType' as query parameter for GET requests.
+     *
+     * @param string|null $customerType
+     *
+     * @return Config
+     */
+    public function setCustomerType(?string $customerType): self
+    {
+        $this->queryParams[self::QUERY_KEY_CUSTOMER_TYPE] = $customerType;
+        return $this;
+    }
+
+    /** Get the 'country' value from query parameter array.
+     *
+     * @return string
+     */
+    public function getCountry(): ?string
+    {
+        return ($this->queryParams[self::PARAM_KEY_COUNTRY] ?? null);
+    }
+
+    /** Set the 'country' as query parameter for GET requests.
+     *
+     * @param string|null $country
+     *
+     * @return Config
+     */
+    public function setCountry(?string $country): self
+    {
+        $this->queryParams[self::PARAM_KEY_COUNTRY] = $country;
+        return $this;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getResourcePath(string $httpMethod = HttpAdapterInterface::REQUEST_GET): string
+    {
+        return parent::getResourcePath($httpMethod) . $this->getQueryString();
+    }
+
+    /** Return the query string created from 'queryParams'.
+     *
+     * @return string|null
+     */
+    private function getQueryString(): ?string
+    {
+        $query = http_build_query($this->queryParams);
+        return $query ? '?' . $query : null;
+    }
+}
diff --git a/vendor/unzerdev/php-sdk/src/Resources/Customer.php b/vendor/unzerdev/php-sdk/src/Resources/Customer.php
index 5f48970..08933a7 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/Customer.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/Customer.php
@@ -1,27 +1,5 @@
 <?php
-/**
- * This represents the customer resource.
- *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @link  https://docs.unzer.com/
- *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Resources
- */
+
 namespace UnzerSDK\Resources;
 
 use UnzerSDK\Adapter\HttpAdapterInterface;
@@ -30,8 +8,15 @@
 use UnzerSDK\Resources\EmbeddedResources\CompanyInfo;
 use UnzerSDK\Traits\HasGeoLocation;
 use stdClass;
+
 use function in_array;
 
+/**
+ * This represents the customer resource.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
 class Customer extends AbstractUnzerResource
 {
     use HasGeoLocation;
@@ -72,6 +57,9 @@ class Customer extends AbstractUnzerResource
     /** @var CompanyInfo $companyInfo */
     protected $companyInfo;
 
+    /** @var string $language */
+    protected $language;
+
     /**
      * Customer constructor.
      */
@@ -81,8 +69,6 @@ public function __construct()
         $this->shippingAddress = new Address();
     }
 
-    //<editor-fold desc="Getters/Setters">
-
     /**
      * @return string|null
      */
@@ -92,11 +78,11 @@ public function getFirstname(): ?string
     }
 
     /**
-     * @param string $firstname
+     * @param string|null $firstname
      *
      * @return Customer
      */
-    public function setFirstname($firstname): Customer
+    public function setFirstname(?string $firstname): Customer
     {
         $this->firstname = $firstname;
         return $this;
@@ -111,11 +97,11 @@ public function getLastname(): ?string
     }
 
     /**
-     * @param string $lastname
+     * @param string|null $lastname
      *
      * @return Customer
      */
-    public function setLastname($lastname): Customer
+    public function setLastname(?string $lastname): Customer
     {
         $this->lastname = $lastname;
         return $this;
@@ -130,11 +116,11 @@ public function getSalutation(): string
     }
 
     /**
-     * @param string $salutation
+     * @param string|null $salutation
      *
      * @return Customer
      */
-    public function setSalutation($salutation): Customer
+    public function setSalutation(?string $salutation): Customer
     {
         $allowedSalutations = [Salutations::MR, Salutations::MRS, Salutations::UNKNOWN];
         $this->salutation = in_array($salutation, $allowedSalutations, true) ? $salutation : Salutations::UNKNOWN;
@@ -150,11 +136,11 @@ public function getBirthDate(): ?string
     }
 
     /**
-     * @param string $birthday
+     * @param string|null $birthday
      *
      * @return Customer
      */
-    public function setBirthDate($birthday): Customer
+    public function setBirthDate(?string $birthday): Customer
     {
         $this->birthDate = $birthday;
         return $this;
@@ -169,11 +155,11 @@ public function getCompany(): ?string
     }
 
     /**
-     * @param string $company
+     * @param string|null $company
      *
      * @return Customer
      */
-    public function setCompany($company): Customer
+    public function setCompany(?string $company): Customer
     {
         $this->company = $company;
         return $this;
@@ -188,11 +174,11 @@ public function getEmail(): ?string
     }
 
     /**
-     * @param string $email
+     * @param string|null $email
      *
      * @return Customer
      */
-    public function setEmail($email): Customer
+    public function setEmail(?string $email): Customer
     {
         $this->email = $email;
         return $this;
@@ -207,11 +193,11 @@ public function getPhone(): ?string
     }
 
     /**
-     * @param string $phone
+     * @param string|null $phone
      *
      * @return Customer
      */
-    public function setPhone($phone): Customer
+    public function setPhone(?string $phone): Customer
     {
         $this->phone = $phone;
         return $this;
@@ -226,11 +212,11 @@ public function getMobile(): ?string
     }
 
     /**
-     * @param string $mobile
+     * @param string|null $mobile
      *
      * @return Customer
      */
-    public function setMobile($mobile): Customer
+    public function setMobile(?string $mobile): Customer
     {
         $this->mobile = $mobile;
         return $this;
@@ -283,11 +269,11 @@ public function getCustomerId(): ?string
     }
 
     /**
-     * @param string $customerId
+     * @param string|null $customerId
      *
      * @return Customer
      */
-    public function setCustomerId($customerId): Customer
+    public function setCustomerId(?string $customerId): Customer
     {
         $this->customerId = $customerId;
         return $this;
@@ -302,32 +288,43 @@ public function getCompanyInfo(): ?CompanyInfo
     }
 
     /**
-     * @param CompanyInfo $companyInfo
+     * @param CompanyInfo|null $companyInfo
      *
      * @return Customer
      */
-    public function setCompanyInfo(CompanyInfo $companyInfo): Customer
+    public function setCompanyInfo(?CompanyInfo $companyInfo): Customer
     {
         $this->companyInfo = $companyInfo;
         return $this;
     }
 
-    //</editor-fold>
+    /**
+     * @return string
+     */
+    public function getLanguage(): string
+    {
+        return $this->language;
+    }
 
-    //<editor-fold desc="Resource IF">
+    /**
+     * @param string|null $language
+     *
+     * @return Customer
+     */
+    public function setLanguage(?string $language): Customer
+    {
+        $this->language = $language;
+        return $this;
+    }
 
     /**
      * {@inheritDoc}
      */
-    protected function getResourcePath($httpMethod = HttpAdapterInterface::REQUEST_GET): string
+    protected function getResourcePath(string $httpMethod = HttpAdapterInterface::REQUEST_GET): string
     {
         return 'customers';
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Overridable methods">
-
     /**
      * {@inheritDoc}
      */
@@ -339,14 +336,13 @@ public function getExternalId(): ?string
     /**
      * {@inheritDoc}
      */
-    public function handleResponse(stdClass $response, $method = HttpAdapterInterface::REQUEST_GET): void
+    public function handleResponse(stdClass $response, string $method = HttpAdapterInterface::REQUEST_GET): void
     {
         if (isset($response->companyInfo) && $this->companyInfo === null) {
             $this->companyInfo = new CompanyInfo();
+            $this->companyInfo->instantiateObjectsFromResponse($response->companyInfo);
         }
 
         parent::handleResponse($response, $method);
     }
-
-    //</editor-fold>
 }
diff --git a/vendor/unzerdev/php-sdk/src/Resources/CustomerFactory.php b/vendor/unzerdev/php-sdk/src/Resources/CustomerFactory.php
index 83bb9cf..777c142 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/CustomerFactory.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/CustomerFactory.php
@@ -1,27 +1,5 @@
 <?php
-/**
- * Creates the different Customer objects.
- *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @link  https://docs.unzer.com/
- *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Resources
- */
+
 namespace UnzerSDK\Resources;
 
 use UnzerSDK\Constants\CompanyCommercialSectorItems;
@@ -29,6 +7,12 @@
 use UnzerSDK\Resources\EmbeddedResources\Address;
 use UnzerSDK\Resources\EmbeddedResources\CompanyInfo;
 
+/**
+ * Creates the different Customer objects.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
 class CustomerFactory
 {
     /**
diff --git a/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/Address.php b/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/Address.php
index 5162c40..48e3b6f 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/Address.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/Address.php
@@ -1,31 +1,15 @@
 <?php
+
+namespace UnzerSDK\Resources\EmbeddedResources;
+
+use UnzerSDK\Resources\AbstractUnzerResource;
+
 /**
  * Represents the address resource.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Resources\EmbeddedResources
  */
-namespace UnzerSDK\Resources\EmbeddedResources;
-
-use UnzerSDK\Resources\AbstractUnzerResource;
-
 class Address extends AbstractUnzerResource
 {
     /** @var string $name */
@@ -46,7 +30,8 @@ class Address extends AbstractUnzerResource
     /** @var string country */
     protected $country;
 
-    //<editor-fold desc="Getters/Setters">
+    /** @var string|null shippingType */
+    protected $shippingType;
 
     /**
      * @return string|null
@@ -57,11 +42,11 @@ public function getName(): ?string
     }
 
     /**
-     * @param string $name
+     * @param string|null $name
      *
      * @return Address
      */
-    public function setName($name): Address
+    public function setName(?string $name): Address
     {
         $this->name = $name;
         return $this;
@@ -76,11 +61,11 @@ public function getStreet(): ?string
     }
 
     /**
-     * @param string $street
+     * @param string|null $street
      *
      * @return Address
      */
-    public function setStreet($street): Address
+    public function setStreet(?string $street): Address
     {
         $this->street = $street;
         return $this;
@@ -95,11 +80,11 @@ public function getState(): ?string
     }
 
     /**
-     * @param string $state
+     * @param string|null $state
      *
      * @return Address
      */
-    public function setState($state): Address
+    public function setState(?string $state): Address
     {
         $this->state = $state;
         return $this;
@@ -114,11 +99,11 @@ public function getZip(): ?string
     }
 
     /**
-     * @param string $zip
+     * @param string|null $zip
      *
      * @return Address
      */
-    public function setZip($zip): Address
+    public function setZip(?string $zip): Address
     {
         $this->zip = $zip;
         return $this;
@@ -133,11 +118,11 @@ public function getCity(): ?string
     }
 
     /**
-     * @param string $city
+     * @param string|null $city
      *
      * @return Address
      */
-    public function setCity($city): Address
+    public function setCity(?string $city): Address
     {
         $this->city = $city;
         return $this;
@@ -152,15 +137,32 @@ public function getCountry(): ?string
     }
 
     /**
-     * @param string $country
+     * @param string|null $country
      *
      * @return Address
      */
-    public function setCountry($country): Address
+    public function setCountry(?string $country): Address
     {
         $this->country = $country;
         return $this;
     }
 
-    //</editor-fold>
+    /**
+     * @return string|null
+     */
+    public function getShippingType(): ?string
+    {
+        return $this->shippingType;
+    }
+
+    /**
+     * @param string|null $shippingType
+     *
+     * @return Address
+     */
+    public function setShippingType(?string $shippingType): Address
+    {
+        $this->shippingType = $shippingType;
+        return $this;
+    }
 }
diff --git a/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/Amount.php b/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/Amount.php
index 6a82d5d..f915180 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/Amount.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/Amount.php
@@ -1,31 +1,15 @@
 <?php
+
+namespace UnzerSDK\Resources\EmbeddedResources;
+
+use UnzerSDK\Resources\AbstractUnzerResource;
+
 /**
  * This class contains the amount properties which are mainly used by the payment class.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Resources\EmbeddedResources
  */
-namespace UnzerSDK\Resources\EmbeddedResources;
-
-use UnzerSDK\Resources\AbstractUnzerResource;
-
 class Amount extends AbstractUnzerResource
 {
     private $total = 0.0;
@@ -36,8 +20,6 @@ class Amount extends AbstractUnzerResource
     /** @var string $currency */
     private $currency;
 
-    //<editor-fold desc="Getters/Setters">
-
     /**
      * @return float
      */
@@ -132,6 +114,4 @@ protected function setCurrency(string $currency): self
         $this->currency = $currency;
         return $this;
     }
-
-    //</editor-fold>
 }
diff --git a/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/ApplePayHeader.php b/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/ApplePayHeader.php
index 094f12f..c33d46a 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/ApplePayHeader.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/ApplePayHeader.php
@@ -1,31 +1,15 @@
 <?php
+
+namespace UnzerSDK\Resources\EmbeddedResources;
+
+use UnzerSDK\Resources\AbstractUnzerResource;
+
 /**
  * Represents the Applepay header resource.
  *
- * Copyright (C) 2021 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  David Owusu <development@unzer.com>
- *
- * @package  UnzerSDK\Resources\EmbeddedResources
  */
-namespace UnzerSDK\Resources\EmbeddedResources;
-
-use UnzerSDK\Resources\AbstractUnzerResource;
-
 class ApplePayHeader extends AbstractUnzerResource
 {
     /** @var string|null */
diff --git a/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/BasketItem.php b/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/BasketItem.php
index fcfdad5..bffe0eb 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/BasketItem.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/BasketItem.php
@@ -1,31 +1,15 @@
 <?php
+
+namespace UnzerSDK\Resources\EmbeddedResources;
+
+use UnzerSDK\Resources\AbstractUnzerResource;
+
 /**
  * This trait adds amount properties to a class.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Resources\EmbeddedResources
  */
-namespace UnzerSDK\Resources\EmbeddedResources;
-
-use UnzerSDK\Resources\AbstractUnzerResource;
-
 class BasketItem extends AbstractUnzerResource
 {
     /** @var string $basketItemReferenceId */
@@ -37,19 +21,45 @@ class BasketItem extends AbstractUnzerResource
     /** @var float $vat */
     protected $vat = 0.0;
 
-    /** @var float $amountDiscount */
+    /**
+     * @var float $amountDiscount
+     *
+     * @deprecated since 1.1.5.0 @see $amountDiscountPerUnitGross.
+     */
     protected $amountDiscount = 0.0;
 
-    /** @var float $amountGross */
+    /** @var float $amountDiscountPerUnitGross */
+    protected $amountDiscountPerUnitGross = 0.0;
+
+    /**
+     * @var float $amountGross
+     *
+     * @deprecated since 1.1.5.0 Property is redundant and is no longer needed.
+     */
     protected $amountGross = 0.0;
 
-    /** @var float $amountVat */
+    /**
+     * @var float $amountVat
+     *
+     * @deprecated since 1.1.5.0 Property is redundant and is no longer needed.
+     */
     protected $amountVat = 0.0;
 
-    /** @var float $amountPerUnit */
+    /**
+     * @var float $amountPerUnit
+     *
+     * @deprecated since 1.1.5.0 @see amountPerUnitGross
+     */
     protected $amountPerUnit = 0.0;
 
-    /** @var float $amountNet */
+    /** @var float $amountPerUnitGross */
+    protected $amountPerUnitGross = 0.0;
+
+    /**
+     * @var float $amountNet
+     *
+     * @deprecated since 1.1.5.0 Property is redundant and is no longer needed.
+     */
     protected $amountNet = 0.0;
 
     /** @var string $unit */
@@ -70,6 +80,8 @@ class BasketItem extends AbstractUnzerResource
     /**
      * BasketItem constructor.
      *
+     * @deprecated since 1.1.5.0 Please call constructor without parameters and use setter functions instead.
+     *
      * @param string $title
      * @param float  $amountNet
      * @param float  $amountPerUnit
@@ -87,8 +99,6 @@ public function __construct(
         $this->setAmountPerUnit($amountPerUnit);
     }
 
-    //<editor-fold desc="Getters/Setters">
-
     /**
      * @return string|null
      */
@@ -102,7 +112,7 @@ public function getBasketItemReferenceId(): ?string
      *
      * @return BasketItem
      */
-    public function setBasketItemReferenceId($basketItemReferenceId): BasketItem
+    public function setBasketItemReferenceId(?string $basketItemReferenceId): BasketItem
     {
         $this->basketItemReferenceId = $basketItemReferenceId;
         return $this;
@@ -148,6 +158,8 @@ public function setVat(float $vat): BasketItem
 
     /**
      * @return float
+     *
+     * @deprecated since 1.1.5.0  @see $getAmountDiscountPerUnitGross.
      */
     public function getAmountDiscount(): float
     {
@@ -157,6 +169,8 @@ public function getAmountDiscount(): float
     /**
      * @param float $amountDiscount
      *
+     * @deprecated since 1.1.5.0  @see $setAmountDiscountPerUnitGross.
+     *
      * @return BasketItem
      */
     public function setAmountDiscount(float $amountDiscount): BasketItem
@@ -167,6 +181,8 @@ public function setAmountDiscount(float $amountDiscount): BasketItem
 
     /**
      * @return float
+     *
+     * @deprecated since 1.1.5.0 Property is redundant and is no longer needed.
      */
     public function getAmountGross(): float
     {
@@ -176,6 +192,8 @@ public function getAmountGross(): float
     /**
      * @param float $amountGross
      *
+     * @deprecated since 1.1.5.0 Property is redundant and is no longer needed.
+     *
      * @return BasketItem
      */
     public function setAmountGross(float $amountGross): BasketItem
@@ -187,6 +205,46 @@ public function setAmountGross(float $amountGross): BasketItem
     /**
      * @return float
      */
+    public function getAmountDiscountPerUnitGross(): float
+    {
+        return $this->amountDiscountPerUnitGross;
+    }
+
+    /**
+     * @param float $amountDiscountPerUnitGross
+     *
+     * @return BasketItem
+     */
+    public function setAmountDiscountPerUnitGross(float $amountDiscountPerUnitGross): BasketItem
+    {
+        $this->amountDiscountPerUnitGross = $amountDiscountPerUnitGross;
+        return $this;
+    }
+
+    /**
+     * @return float
+     */
+    public function getAmountPerUnitGross(): float
+    {
+        return $this->amountPerUnitGross;
+    }
+
+    /**
+     * @param float $amountPerUnitGross
+     *
+     * @return BasketItem
+     */
+    public function setAmountPerUnitGross(float $amountPerUnitGross): BasketItem
+    {
+        $this->amountPerUnitGross = $amountPerUnitGross;
+        return $this;
+    }
+
+    /**
+     * @return float
+     *
+     * @deprecated since 1.1.5.0 Property is redundant and is no longer needed.
+     */
     public function getAmountVat(): float
     {
         return $this->amountVat;
@@ -195,6 +253,8 @@ public function getAmountVat(): float
     /**
      * @param float $amountVat
      *
+     * @deprecated since 1.1.5.0 Property is redundant and is no longer needed.
+     *
      * @return BasketItem
      */
     public function setAmountVat(float $amountVat): BasketItem
@@ -205,6 +265,8 @@ public function setAmountVat(float $amountVat): BasketItem
 
     /**
      * @return float
+     *
+     * @deprecated since 1.1.5.0 Property is redundant and is no longer needed.
      */
     public function getAmountPerUnit(): float
     {
@@ -214,6 +276,8 @@ public function getAmountPerUnit(): float
     /**
      * @param float $amountPerUnit
      *
+     * @deprecated since 1.1.5.0 @see setAmountPerUnitGross
+     *
      * @return BasketItem
      */
     public function setAmountPerUnit(float $amountPerUnit): BasketItem
@@ -224,6 +288,8 @@ public function setAmountPerUnit(float $amountPerUnit): BasketItem
 
     /**
      * @return float
+     *
+     * @deprecated since 1.1.5.0 Property is redundant and is no longer needed.
      */
     public function getAmountNet(): float
     {
@@ -233,6 +299,8 @@ public function getAmountNet(): float
     /**
      * @param float $amountNet
      *
+     * @deprecated since 1.1.5.0 Property is redundant and is no longer needed.
+     *
      * @return BasketItem
      */
     public function setAmountNet(float $amountNet): BasketItem
@@ -254,7 +322,7 @@ public function getUnit(): ?string
      *
      * @return BasketItem
      */
-    public function setUnit($unit): BasketItem
+    public function setUnit(?string $unit): BasketItem
     {
         $this->unit = $unit;
         return $this;
@@ -292,7 +360,7 @@ public function getImageUrl(): ?string
      *
      * @return BasketItem
      */
-    public function setImageUrl($imageUrl): BasketItem
+    public function setImageUrl(?string $imageUrl): BasketItem
     {
         $this->imageUrl = $imageUrl;
         return $this;
@@ -311,7 +379,7 @@ public function getSubTitle(): ?string
      *
      * @return BasketItem
      */
-    public function setSubTitle($subTitle): BasketItem
+    public function setSubTitle(?string $subTitle): BasketItem
     {
         $this->subTitle = $subTitle;
         return $this;
@@ -333,11 +401,9 @@ public function getType(): ?string
      *
      * @return BasketItem
      */
-    public function setType($type): BasketItem
+    public function setType(?string $type): BasketItem
     {
         $this->type = $type;
         return $this;
     }
-
-    //</editor-fold>
 }
diff --git a/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/CardDetails.php b/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/CardDetails.php
index 557313a..1cfc65f 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/CardDetails.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/CardDetails.php
@@ -1,31 +1,15 @@
 <?php
+
+namespace UnzerSDK\Resources\EmbeddedResources;
+
+use UnzerSDK\Resources\AbstractUnzerResource;
+
 /**
  * Represents detailed information for Card payment types.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Resources\EmbeddedResources
  */
-namespace UnzerSDK\Resources\EmbeddedResources;
-
-use UnzerSDK\Resources\AbstractUnzerResource;
-
 class CardDetails extends AbstractUnzerResource
 {
     /** @var string|null $cardType */
@@ -49,8 +33,6 @@ class CardDetails extends AbstractUnzerResource
     /** @var string|null $issuerPhoneNumber */
     protected $issuerPhoneNumber;
 
-    //<editor-fold desc="Getters/Setters">
-
     /**
      * @return string|null
      */
@@ -64,7 +46,7 @@ public function getCardType(): ?string
      *
      * @return CardDetails
      */
-    protected function setCardType($cardType): CardDetails
+    protected function setCardType(?string $cardType): CardDetails
     {
         $this->cardType = $cardType;
         return $this;
@@ -83,7 +65,7 @@ public function getAccount(): ?string
      *
      * @return CardDetails
      */
-    protected function setAccount($account): CardDetails
+    protected function setAccount(?string $account): CardDetails
     {
         $this->account = $account;
         return $this;
@@ -102,7 +84,7 @@ public function getCountryIsoA2(): ?string
      *
      * @return CardDetails
      */
-    protected function setCountryIsoA2($countryIsoA2): CardDetails
+    protected function setCountryIsoA2(?string $countryIsoA2): CardDetails
     {
         $this->countryIsoA2 = $countryIsoA2;
         return $this;
@@ -121,7 +103,7 @@ public function getCountryName(): ?string
      *
      * @return CardDetails
      */
-    protected function setCountryName($countryName): CardDetails
+    protected function setCountryName(?string $countryName): CardDetails
     {
         $this->countryName = $countryName;
         return $this;
@@ -140,7 +122,7 @@ public function getIssuerName(): ?string
      *
      * @return CardDetails
      */
-    protected function setIssuerName($issuerName): CardDetails
+    protected function setIssuerName(?string $issuerName): CardDetails
     {
         $this->issuerName = $issuerName;
         return $this;
@@ -159,7 +141,7 @@ public function getIssuerUrl(): ?string
      *
      * @return CardDetails
      */
-    protected function setIssuerUrl($issuerUrl): CardDetails
+    protected function setIssuerUrl(?string $issuerUrl): CardDetails
     {
         $this->issuerUrl = $issuerUrl;
         return $this;
@@ -178,11 +160,9 @@ public function getIssuerPhoneNumber(): ?string
      *
      * @return CardDetails
      */
-    protected function setIssuerPhoneNumber($issuerPhoneNumber): CardDetails
+    protected function setIssuerPhoneNumber(?string $issuerPhoneNumber): CardDetails
     {
         $this->issuerPhoneNumber = $issuerPhoneNumber;
         return $this;
     }
-
-    //</editor-fold>
 }
diff --git a/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/CardTransactionData.php b/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/CardTransactionData.php
new file mode 100644
index 0000000..4d6bdb0
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/CardTransactionData.php
@@ -0,0 +1,79 @@
+<?php
+
+namespace UnzerSDK\Resources\EmbeddedResources;
+
+use UnzerSDK\Resources\AbstractUnzerResource;
+
+/*
+ * Represents `card` object of `additionalTransactionData'.
+ *
+ *  @link  https://docs.unzer.com/
+ *
+ */
+class CardTransactionData extends AbstractUnzerResource
+{
+    /** @var string|null $recurrenceType */
+    protected $recurrenceType;
+    /** @var string|null $exemptionType */
+    protected $exemptionType;
+    /** @var string|null $liability */
+    private $liability;
+
+    /**
+     * @return string|null
+     */
+    public function getRecurrenceType(): ?string
+    {
+        return $this->recurrenceType;
+    }
+
+    /**
+     * @param string|null $recurrenceType
+     *
+     * @return CardTransactionData
+     */
+    public function setRecurrenceType(?string $recurrenceType): CardTransactionData
+    {
+        $this->recurrenceType = $recurrenceType;
+
+        return $this;
+    }
+
+    /**
+     * @return string|null
+     */
+    public function getLiability(): ?string
+    {
+        return $this->liability;
+    }
+
+    /**
+     * @param string|null $liability
+     *
+     * @return CardTransactionData
+     */
+    public function setLiability(?string $liability): CardTransactionData
+    {
+        $this->liability = $liability;
+        return $this;
+    }
+
+    /**
+     * @return string|null
+     */
+    public function getExemptionType(): ?string
+    {
+        return $this->exemptionType;
+    }
+
+    /**
+     * @param string|null $exemptionType
+     *
+     * @return CardTransactionData
+     */
+    public function setExemptionType(?string $exemptionType): CardTransactionData
+    {
+        $this->exemptionType = $exemptionType;
+        return $this;
+    }
+}
diff --git a/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/CompanyInfo.php b/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/CompanyInfo.php
index 0deafec..8b9026c 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/CompanyInfo.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/CompanyInfo.php
@@ -1,33 +1,19 @@
 <?php
-/**
- * Company info class for B2B customer classes.
- *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @link  https://docs.unzer.com/
- *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Resources\EmbeddedResources
- */
+
 namespace UnzerSDK\Resources\EmbeddedResources;
 
 use UnzerSDK\Constants\CompanyCommercialSectorItems;
 use UnzerSDK\Resources\AbstractUnzerResource;
+use stdClass;
+
 use function is_string;
 
+/**
+ * Company info class for B2B customer classes.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
 class CompanyInfo extends AbstractUnzerResource
 {
     /** @var string $registrationType */
@@ -42,7 +28,11 @@ class CompanyInfo extends AbstractUnzerResource
     /** @var string $commercialSector */
     protected $commercialSector = CompanyCommercialSectorItems::OTHER;
 
-    //<editor-fold desc="Getters/Setters">
+    /** @var string|null $companyType */
+    protected $companyType;
+
+    /** @var CompanyOwner|null $owner */
+    protected $owner;
 
     /**
      * @return string|null
@@ -57,7 +47,7 @@ public function getRegistrationType(): ?string
      *
      * @return CompanyInfo
      */
-    public function setRegistrationType($registrationType): CompanyInfo
+    public function setRegistrationType(?string $registrationType): CompanyInfo
     {
         $this->registrationType = $this->removeRestrictedSymbols($registrationType);
         return $this;
@@ -76,7 +66,7 @@ public function getCommercialRegisterNumber(): ?string
      *
      * @return CompanyInfo
      */
-    public function setCommercialRegisterNumber($commercialRegisterNumber): CompanyInfo
+    public function setCommercialRegisterNumber(?string $commercialRegisterNumber): CompanyInfo
     {
         $this->commercialRegisterNumber = empty($commercialRegisterNumber) ?
             $commercialRegisterNumber : $this->removeRestrictedSymbols($commercialRegisterNumber);
@@ -96,7 +86,7 @@ public function getFunction(): ?string
      *
      * @return CompanyInfo
      */
-    public function setFunction($function): CompanyInfo
+    public function setFunction(?string $function): CompanyInfo
     {
         $this->function = $this->removeRestrictedSymbols($function);
         return $this;
@@ -121,9 +111,57 @@ public function setCommercialSector(string $commercialSector): CompanyInfo
         return $this;
     }
 
-    //</editor-fold>
+    /**
+     * @return string|null
+     */
+    public function getCompanyType(): ?string
+    {
+        return $this->companyType;
+    }
+
+    /**
+     * @param string|null $companyType
+     *
+     * @return CompanyInfo
+     */
+    public function setCompanyType(?string $companyType): CompanyInfo
+    {
+        $this->companyType = $companyType;
+        return $this;
+    }
+
+    /**
+     * @return CompanyOwner|null
+     */
+    public function getOwner(): ?CompanyOwner
+    {
+        return $this->owner;
+    }
 
-    //<editor-fold desc="Helpers">
+    /**
+     * @param CompanyOwner|null $owner
+     *
+     * @return CompanyInfo
+     */
+    public function setOwner(?CompanyOwner $owner): CompanyInfo
+    {
+        $this->owner = $owner;
+        return $this;
+    }
+
+    /**
+     * Create instances of necessary properties to handle API responses.
+     *
+     * @param stdClass $response
+     *
+     * @return void
+     */
+    public function instantiateObjectsFromResponse(stdClass $response): void
+    {
+        if (isset($response->owner) && $this->owner === null) {
+            $this->owner = new CompanyOwner();
+        }
+    }
 
     /**
      * Removes some restricted symbols from the given value.
@@ -132,7 +170,7 @@ public function setCommercialSector(string $commercialSector): CompanyInfo
      *
      * @return mixed
      */
-    private function removeRestrictedSymbols($value)
+    private function removeRestrictedSymbols(?string $value)
     {
         if (!is_string($value)) {
             return $value;
@@ -140,6 +178,4 @@ private function removeRestrictedSymbols($value)
 
         return str_replace(['<', '>'], '', $value);
     }
-
-    //</editor-fold>
 }
diff --git a/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/CompanyOwner.php b/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/CompanyOwner.php
new file mode 100644
index 0000000..ab69350
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/CompanyOwner.php
@@ -0,0 +1,80 @@
+<?php
+
+namespace UnzerSDK\Resources\EmbeddedResources;
+
+use UnzerSDK\Resources\AbstractUnzerResource;
+
+/**
+ * Company owner class for B2B customer.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+class CompanyOwner extends AbstractUnzerResource
+{
+    /** @var string|null $firstname */
+    protected $firstname;
+
+    /** @var string|null $lastname */
+    protected $lastname;
+
+    /** @var string|null $birthdate */
+    protected $birthdate;
+
+    /**
+     * @return string|null
+     */
+    public function getFirstname(): ?string
+    {
+        return $this->firstname;
+    }
+
+    /**
+     * @param string|null $firstname
+     *
+     * @return CompanyOwner
+     */
+    public function setFirstname(?string $firstname): CompanyOwner
+    {
+        $this->firstname = $firstname;
+        return $this;
+    }
+
+    /**
+     * @return string|null
+     */
+    public function getLastname(): ?string
+    {
+        return $this->lastname;
+    }
+
+    /**
+     * @param string|null $lastname
+     *
+     * @return CompanyOwner
+     */
+    public function setLastname(?string $lastname): CompanyOwner
+    {
+        $this->lastname = $lastname;
+        return $this;
+    }
+
+    /**
+     * @return string|null
+     */
+    public function getBirthdate(): ?string
+    {
+        return $this->birthdate;
+    }
+
+    /**
+     * @param string|null $birthdate
+     *
+     * @return CompanyOwner
+     */
+    public function setBirthdate(?string $birthdate): CompanyOwner
+    {
+        $this->birthdate = $birthdate;
+        return $this;
+    }
+}
diff --git a/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/GeoLocation.php b/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/GeoLocation.php
index ac5c980..c47238f 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/GeoLocation.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/GeoLocation.php
@@ -1,31 +1,15 @@
 <?php
+
+namespace UnzerSDK\Resources\EmbeddedResources;
+
+use UnzerSDK\Resources\AbstractUnzerResource;
+
 /**
  * Represents the geo location of an entity.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Resources\EmbeddedResources
  */
-namespace UnzerSDK\Resources\EmbeddedResources;
-
-use UnzerSDK\Resources\AbstractUnzerResource;
-
 class GeoLocation extends AbstractUnzerResource
 {
     /** @var string|null $clientIp */
@@ -34,8 +18,6 @@ class GeoLocation extends AbstractUnzerResource
     /** @var string|null $countryCode */
     private $countryCode;
 
-    //<editor-fold desc="Getters/Setters">
-
     /**
      * @return string|null
      */
@@ -49,7 +31,7 @@ public function getClientIp(): ?string
      *
      * @return GeoLocation
      */
-    protected function setClientIp($clientIp): GeoLocation
+    protected function setClientIp(?string $clientIp): GeoLocation
     {
         $this->clientIp = $clientIp;
         return $this;
@@ -68,7 +50,7 @@ public function getCountryCode(): ?string
      *
      * @return GeoLocation
      */
-    protected function setCountryCode($countryCode): GeoLocation
+    protected function setCountryCode(?string $countryCode): GeoLocation
     {
         $this->countryCode = $countryCode;
         return $this;
@@ -79,10 +61,8 @@ protected function setCountryCode($countryCode): GeoLocation
      *
      * @return GeoLocation
      */
-    protected function setCountryIsoA2($countryCode): GeoLocation
+    protected function setCountryIsoA2(?string $countryCode): GeoLocation
     {
         return $this->setCountryCode($countryCode);
     }
-
-    //</editor-fold>
 }
diff --git a/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/GooglePay/IntermediateSigningKey.php b/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/GooglePay/IntermediateSigningKey.php
new file mode 100644
index 0000000..1964a77
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/GooglePay/IntermediateSigningKey.php
@@ -0,0 +1,52 @@
+<?php
+
+namespace UnzerSDK\Resources\EmbeddedResources\GooglePay;
+
+use stdClass;
+use UnzerSDK\Adapter\HttpAdapterInterface;
+use UnzerSDK\Resources\AbstractUnzerResource;
+
+class IntermediateSigningKey extends AbstractUnzerResource
+{
+    /**
+     * @var SignedKey $signedKey
+     */
+    protected $signedKey;
+
+    /**
+     * @var string[] $signedKey
+     */
+    protected $signatures;
+
+    public function getSignedKey(): ?SignedKey
+    {
+        return $this->signedKey;
+    }
+
+    public function setSignedKey(SignedKey $signedKey): IntermediateSigningKey
+    {
+        $this->signedKey = $signedKey;
+        return $this;
+    }
+
+    public function getSignatures(): array
+    {
+        return $this->signatures;
+    }
+
+    public function setSignatures(array $signatures): IntermediateSigningKey
+    {
+        $this->signatures = $signatures;
+        return $this;
+    }
+
+    public function handleResponse(stdClass $response, string $method = HttpAdapterInterface::REQUEST_GET): void
+    {
+        parent::handleResponse($response, $method);
+
+        if (isset($response->signedKey)) {
+            $this->signedKey = new SignedKey();
+            $this->signedKey->handleResponse($response->signedKey);
+        }
+    }
+}
diff --git a/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/GooglePay/SignedKey.php b/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/GooglePay/SignedKey.php
new file mode 100644
index 0000000..103aca1
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/GooglePay/SignedKey.php
@@ -0,0 +1,50 @@
+<?php
+
+namespace UnzerSDK\Resources\EmbeddedResources\GooglePay;
+
+use UnzerSDK\Resources\AbstractUnzerResource;
+
+class SignedKey extends AbstractUnzerResource
+{
+    /**
+     * @var string $keyExpiration
+     */
+    protected $keyExpiration;
+
+    /**
+     * @var string $keyValue
+     */
+    protected $keyValue;
+
+    /**
+     * @param string $keyExpiration
+     * @param string $keyValue
+     */
+    public function __construct(?string $keyExpiration = null, ?string $keyValue = null)
+    {
+        $this->keyExpiration = $keyExpiration;
+        $this->keyValue = $keyValue;
+    }
+
+    public function getKeyExpiration(): string
+    {
+        return $this->keyExpiration;
+    }
+
+    public function setKeyExpiration(string $keyExpiration): SignedKey
+    {
+        $this->keyExpiration = $keyExpiration;
+        return $this;
+    }
+
+    public function getKeyValue(): string
+    {
+        return $this->keyValue;
+    }
+
+    public function setKeyValue(string $keyValue): SignedKey
+    {
+        $this->keyValue = $keyValue;
+        return $this;
+    }
+}
diff --git a/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/GooglePay/SignedMessage.php b/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/GooglePay/SignedMessage.php
new file mode 100644
index 0000000..647474d
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/GooglePay/SignedMessage.php
@@ -0,0 +1,62 @@
+<?php
+
+namespace UnzerSDK\Resources\EmbeddedResources\GooglePay;
+
+use UnzerSDK\Resources\AbstractUnzerResource;
+
+class SignedMessage extends AbstractUnzerResource
+{
+    /** @var string */
+    protected $tag;
+
+    /** @var string */
+    protected $ephemeralPublicKey;
+
+    /** @var string */
+    protected $encryptedMessage;
+
+    /**
+     * @param string $tag
+     * @param string $ephemeralPublicKey
+     * @param string $encryptedMessage
+     */
+    public function __construct(string $tag = null, string $ephemeralPublicKey = null, string $encryptedMessage = null)
+    {
+        $this->tag = $tag;
+        $this->ephemeralPublicKey = $ephemeralPublicKey;
+        $this->encryptedMessage = $encryptedMessage;
+    }
+
+    public function getTag(): string
+    {
+        return $this->tag;
+    }
+
+    public function setTag(string $tag): SignedMessage
+    {
+        $this->tag = $tag;
+        return $this;
+    }
+
+    public function getEphemeralPublicKey(): string
+    {
+        return $this->ephemeralPublicKey;
+    }
+
+    public function setEphemeralPublicKey(string $ephemeralPublicKey): SignedMessage
+    {
+        $this->ephemeralPublicKey = $ephemeralPublicKey;
+        return $this;
+    }
+
+    public function getEncryptedMessage(): string
+    {
+        return $this->encryptedMessage;
+    }
+
+    public function setEncryptedMessage(string $encryptedMessage): SignedMessage
+    {
+        $this->encryptedMessage = $encryptedMessage;
+        return $this;
+    }
+}
diff --git a/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/Message.php b/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/Message.php
index b3094c7..97a0e8b 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/Message.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/Message.php
@@ -1,31 +1,15 @@
 <?php
+
+namespace UnzerSDK\Resources\EmbeddedResources;
+
+use UnzerSDK\Resources\AbstractUnzerResource;
+
 /**
- * Represents the message resource holding information like a transactions error code and message.
- *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
+ * Represents the message resource holding information like a transaction error code and message.
  *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Resources\EmbeddedResources
  */
-namespace UnzerSDK\Resources\EmbeddedResources;
-
-use UnzerSDK\Resources\AbstractUnzerResource;
-
 class Message extends AbstractUnzerResource
 {
     /** @var string $code */
@@ -37,8 +21,6 @@ class Message extends AbstractUnzerResource
     /** @var string $merchant */
     private $merchant = '';
 
-    //<editor-fold desc="Getters/Setters">
-
     /**
      * @return string
      */
@@ -90,11 +72,9 @@ public function getMerchant(): ?string
      *
      * @return Message
      */
-    protected function setMerchant($merchant): Message
+    protected function setMerchant(?string $merchant): Message
     {
         $this->merchant = $merchant;
         return $this;
     }
-
-    //</editor-fold>
 }
diff --git a/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/Paylater/InstallmentPlan.php b/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/Paylater/InstallmentPlan.php
new file mode 100644
index 0000000..344a935
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/Paylater/InstallmentPlan.php
@@ -0,0 +1,162 @@
+<?php
+
+namespace UnzerSDK\Resources\EmbeddedResources\Paylater;
+
+use UnzerSDK\Adapter\HttpAdapterInterface;
+use UnzerSDK\Resources\AbstractUnzerResource;
+use stdClass;
+
+/**
+ * Resource representing the installment plan for Paylater Installment.
+ *
+ *  @link  https://docs.unzer.com/
+ *
+ */
+class InstallmentPlan extends AbstractUnzerResource
+{
+    /** @var int $numberOfRates */
+    private $numberOfRates;
+
+    private $totalAmount;
+
+    private $nominalInterestRate;
+
+    /** @var float $effectiveInterestRate */
+    private $effectiveInterestRate;
+
+    /** @var string $secciUrl */
+    private $secciUrl;
+
+    /** @var InstallmentRate */
+    private $installmentRates;
+
+    /**
+     * @return string
+     */
+    public function getSecciUrl(): string
+    {
+        return $this->secciUrl;
+    }
+
+    /**
+     * @param string $secciUrl
+     *
+     * @return InstallmentPlan
+     */
+    public function setSecciUrl(string $secciUrl): InstallmentPlan
+    {
+        $this->secciUrl = $secciUrl;
+        return $this;
+    }
+
+    /**
+     * @return int
+     */
+    public function getNumberOfRates(): int
+    {
+        return $this->numberOfRates;
+    }
+
+    /**
+     * @param int $numberOfRates
+     *
+     * @return InstallmentPlan
+     */
+    public function setNumberOfRates(int $numberOfRates): InstallmentPlan
+    {
+        $this->numberOfRates = $numberOfRates;
+        return $this;
+    }
+
+    /**
+     * @return mixed
+     */
+    public function getTotalAmount()
+    {
+        return $this->totalAmount;
+    }
+
+    /**
+     * @param mixed $totalAmount
+     *
+     * @return InstallmentPlan
+     */
+    public function setTotalAmount($totalAmount)
+    {
+        $this->totalAmount = $totalAmount;
+        return $this;
+    }
+
+    /**
+     * @return mixed
+     */
+    public function getNominalInterestRate()
+    {
+        return $this->nominalInterestRate;
+    }
+
+    /**
+     * @param mixed $nominalInterestRate
+     *
+     * @return InstallmentPlan
+     */
+    public function setNominalInterestRate($nominalInterestRate)
+    {
+        $this->nominalInterestRate = $nominalInterestRate;
+        return $this;
+    }
+
+    /**
+     * @return float
+     */
+    public function getEffectiveInterestRate(): float
+    {
+        return $this->effectiveInterestRate;
+    }
+
+    /**
+     * @param float $effectiveInterestRate
+     *
+     * @return InstallmentPlan
+     */
+    public function setEffectiveInterestRate(float $effectiveInterestRate): InstallmentPlan
+    {
+        $this->effectiveInterestRate = $effectiveInterestRate;
+        return $this;
+    }
+
+    /**
+     * @return InstallmentRate[]|null
+     */
+    public function getInstallmentRates(): ?array
+    {
+        return $this->installmentRates;
+    }
+
+    /**
+     * @param InstallmentRate[] $installmentRates
+     *
+     * @return InstallmentPlan
+     */
+    protected function setInstallmentRates(array $installmentRates): InstallmentPlan
+    {
+        $this->installmentRates = $installmentRates;
+        return $this;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function handleResponse(stdClass $response, string $method = HttpAdapterInterface::REQUEST_GET): void
+    {
+        parent::handleResponse($response, $method);
+
+        if (isset($response->installmentRates)) {
+            $rates = [];
+            foreach ($response->installmentRates as $rate) {
+                $rates[] = new InstallmentRate($rate->date, $rate->rate);
+            }
+            $this->setInstallmentRates($rates);
+        }
+    }
+}
diff --git a/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/Paylater/InstallmentPlansQuery.php b/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/Paylater/InstallmentPlansQuery.php
new file mode 100644
index 0000000..7d949c4
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/Paylater/InstallmentPlansQuery.php
@@ -0,0 +1,110 @@
+<?php
+
+namespace UnzerSDK\Resources\EmbeddedResources\Paylater;
+
+use UnzerSDK\Constants\CustomerTypes;
+use UnzerSDK\Resources\AbstractUnzerResource;
+
+/**
+ * This class contains the query properties which are used to fetch paylater installment plans.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+class InstallmentPlansQuery extends AbstractUnzerResource
+{
+    protected float $amount;
+    protected string $currency;
+    protected string $country;
+    protected string $customerType;
+
+    /**
+     * @param float  $amount
+     * @param string $currency
+     * @param string $country
+     * @param string $customerType
+     */
+    public function __construct(float $amount, string $currency, string $country, string $customerType = CustomerTypes::B2C)
+    {
+        $this->amount = $amount;
+        $this->currency = $currency;
+        $this->country = $country;
+        $this->customerType = $customerType;
+    }
+
+    /**
+     * @return float
+     */
+    public function getAmount(): float
+    {
+        return $this->amount;
+    }
+
+    /**
+     * @param float $amount
+     *
+     * @return InstallmentPlansQuery
+     */
+    public function setAmount(float $amount): InstallmentPlansQuery
+    {
+        $this->amount = $amount;
+        return $this;
+    }
+
+    /**
+     * @return string
+     */
+    public function getCurrency(): string
+    {
+        return $this->currency;
+    }
+
+    /**
+     * @param string $currency
+     *
+     * @return InstallmentPlansQuery
+     */
+    public function setCurrency(string $currency): InstallmentPlansQuery
+    {
+        $this->currency = $currency;
+        return $this;
+    }
+
+    /**
+     * @return string
+     */
+    public function getCountry(): string
+    {
+        return $this->country;
+    }
+
+    /**
+     * @param string $country
+     *
+     * @return InstallmentPlansQuery
+     */
+    public function setCountry(string $country): InstallmentPlansQuery
+    {
+        $this->country = $country;
+        return $this;
+    }
+
+    /**
+     * @return string
+     */
+    public function getCustomerType(): string
+    {
+        return $this->customerType;
+    }
+
+    /**
+     * @param string $customerType
+     *
+     * @return InstallmentPlansQuery
+     */
+    public function setCustomerType(string $customerType): InstallmentPlansQuery
+    {
+        $this->customerType = $customerType;
+        return $this;
+    }
+}
diff --git a/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/Paylater/InstallmentRate.php b/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/Paylater/InstallmentRate.php
new file mode 100644
index 0000000..d65ed0e
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/Paylater/InstallmentRate.php
@@ -0,0 +1,66 @@
+<?php
+
+namespace UnzerSDK\Resources\EmbeddedResources\Paylater;
+
+/**
+ * Installment rate class for PaylaterInstallment payment types.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+class InstallmentRate
+{
+    /** @var string|null $date */
+    protected $date;
+
+    /** @var string|null $rate Amount of rate.*/
+    protected $rate;
+
+    /**
+     * @param string|null $date
+     * @param string|null $rate
+     */
+    public function __construct(?string $date, ?string $rate)
+    {
+        $this->date = $date;
+        $this->rate = $rate;
+    }
+
+    /**
+     * @return string|null
+     */
+    public function getDate(): ?string
+    {
+        return $this->date;
+    }
+
+    /**
+     * @param string|null $date
+     *
+     * @return InstallmentRate
+     */
+    public function setDate(?string $date): InstallmentRate
+    {
+        $this->date = $date;
+        return $this;
+    }
+
+    /**
+     * @return string|null
+     */
+    public function getRate(): ?string
+    {
+        return $this->rate;
+    }
+
+    /**
+     * @param string|null $rate
+     *
+     * @return InstallmentRate
+     */
+    public function setRate(?string $rate): InstallmentRate
+    {
+        $this->rate = $rate;
+        return $this;
+    }
+}
diff --git a/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/RiskData.php b/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/RiskData.php
new file mode 100644
index 0000000..cc43919
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/RiskData.php
@@ -0,0 +1,171 @@
+<?php
+
+namespace UnzerSDK\Resources\EmbeddedResources;
+
+use UnzerSDK\Constants\CustomerGroups;
+use UnzerSDK\Resources\AbstractUnzerResource;
+
+/**
+ * RiskData class for Paylater payment types.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+class RiskData extends AbstractUnzerResource
+{
+    /** @var string|null $threatMetrixId */
+    protected $threatMetrixId;
+
+    /** @var string|null $registrationLevel */
+    protected $registrationLevel;
+
+    /** @var string|null $registrationDate */
+    protected $registrationDate;
+
+    /** @var string|null $customerId */
+    protected $customerId;
+
+    /** @var string|null $customerGroup */
+    protected $customerGroup;
+
+    /** @var int|null $confirmedOrders */
+    protected $confirmedOrders;
+
+    /** @var float|null $confirmedAmount */
+    protected $confirmedAmount;
+
+    /**
+     * @return string|null
+     */
+    public function getThreatMetrixId(): ?string
+    {
+        return $this->threatMetrixId;
+    }
+
+    /**
+     * @param string|null $threatMetrixId
+     *
+     * @return RiskData
+     */
+    public function setThreatMetrixId(?string $threatMetrixId): RiskData
+    {
+        $this->threatMetrixId = $threatMetrixId;
+        return $this;
+    }
+
+    /**
+     * @return string|null
+     */
+    public function getRegistrationLevel(): ?string
+    {
+        return $this->registrationLevel;
+    }
+
+    /**
+     * @param string|null $registrationLevel
+     *
+     * @return RiskData
+     */
+    public function setRegistrationLevel(?string $registrationLevel): RiskData
+    {
+        $this->registrationLevel = $registrationLevel;
+        return $this;
+    }
+
+    /**
+     * @return string|null
+     */
+    public function getRegistrationDate(): ?string
+    {
+        return $this->registrationDate;
+    }
+
+    /**
+     * @param string|null $registrationDate Dateformat must be "YYYYMMDD".
+     *
+     * @return RiskData
+     */
+    public function setRegistrationDate(?string $registrationDate): RiskData
+    {
+        $this->registrationDate = $registrationDate;
+        return $this;
+    }
+
+    /**
+     * @return string|null
+     */
+    public function getCustomerId(): ?string
+    {
+        return $this->customerId;
+    }
+
+    /**
+     * @param string|null $customerId
+     *
+     * @return RiskData
+     */
+    public function setCustomerId(?string $customerId): RiskData
+    {
+        $this->customerId = $customerId;
+        return $this;
+    }
+
+    /**
+     * @return string|null
+     */
+    public function getCustomerGroup(): ?string
+    {
+        return $this->customerGroup;
+    }
+
+    /**
+     * @param string|null $customerGroup
+     *
+     * @see CustomerGroups
+     *
+     * @return RiskData
+     */
+    public function setCustomerGroup(?string $customerGroup): RiskData
+    {
+        $this->customerGroup = $customerGroup;
+        return $this;
+    }
+
+    /**
+     * @return int|null
+     */
+    public function getConfirmedOrders(): ?int
+    {
+        return $this->confirmedOrders;
+    }
+
+    /**
+     * @param int|null $confirmedOrders
+     *
+     * @return RiskData
+     */
+    public function setConfirmedOrders(?int $confirmedOrders): RiskData
+    {
+        $this->confirmedOrders = $confirmedOrders;
+        return $this;
+    }
+
+    /**
+     * @return float|null
+     */
+    public function getConfirmedAmount(): ?float
+    {
+        return $this->confirmedAmount;
+    }
+
+    /**
+     * @param float|null $confirmedAmount
+     *
+     * @return RiskData
+     */
+    public function setConfirmedAmount(?float $confirmedAmount): RiskData
+    {
+        $this->confirmedAmount = $confirmedAmount;
+        return $this;
+    }
+}
diff --git a/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/ShippingData.php b/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/ShippingData.php
new file mode 100644
index 0000000..9529bac
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/src/Resources/EmbeddedResources/ShippingData.php
@@ -0,0 +1,80 @@
+<?php
+
+namespace UnzerSDK\Resources\EmbeddedResources;
+
+use UnzerSDK\Resources\AbstractUnzerResource;
+
+/**
+ * Shipping class for Paylater payment types.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+class ShippingData extends AbstractUnzerResource
+{
+    /** @var string|null $deliveryTrackingId */
+    protected $deliveryTrackingId;
+
+    /** @var string|null $deliveryService */
+    protected $deliveryService;
+
+    /** @var string|null $returnTrackingId */
+    protected $returnTrackingId;
+
+    /**
+     * @return string|null
+     */
+    public function getDeliveryTrackingId(): ?string
+    {
+        return $this->deliveryTrackingId;
+    }
+
+    /**
+     * @param string|null $deliveryTrackingId
+     *
+     * @return ShippingData
+     */
+    public function setDeliveryTrackingId(?string $deliveryTrackingId): ShippingData
+    {
+        $this->deliveryTrackingId = $deliveryTrackingId;
+        return $this;
+    }
+
+    /**
+     * @return string|null
+     */
+    public function getDeliveryService(): ?string
+    {
+        return $this->deliveryService;
+    }
+
+    /**
+     * @param string|null $deliveryService
+     *
+     * @return ShippingData
+     */
+    public function setDeliveryService(?string $deliveryService): ShippingData
+    {
+        $this->deliveryService = $deliveryService;
+        return $this;
+    }
+
+    /**
+     * @return string|null
+     */
+    public function getReturnTrackingId(): ?string
+    {
+        return $this->returnTrackingId;
+    }
+
+    /**
+     * @param string|null $returnTrackingId
+     *
+     * @return ShippingData
+     */
+    public function setReturnTrackingId(?string $returnTrackingId): ShippingData
+    {
+        $this->returnTrackingId = $returnTrackingId;
+        return $this;
+    }
+}
diff --git a/vendor/unzerdev/php-sdk/src/Resources/ExternalResources/ApplepaySession.php b/vendor/unzerdev/php-sdk/src/Resources/ExternalResources/ApplepaySession.php
index 8fb4a41..2f3ebc7 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/ExternalResources/ApplepaySession.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/ExternalResources/ApplepaySession.php
@@ -1,31 +1,13 @@
 <?php
+
+namespace UnzerSDK\Resources\ExternalResources;
+
 /*
- *  This class is used for applepay merchant validation request.
- *
- *  Copyright (C) 2021 - today Unzer E-Com GmbH
- *
- *  Licensed under the Apache License, Version 2.0 (the "License");
- *  you may not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS,
- *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  This class is used for Apple Pay merchant validation request.
  *
  *  @link  https://docs.unzer.com/
  *
- *  @author  David Owusu <development@unzer.com>
- *
- *  @package  UnzerSDK
- *
  */
-
-namespace UnzerSDK\Resources\ExternalResources;
-
 class ApplepaySession
 {
     /**
diff --git a/vendor/unzerdev/php-sdk/src/Resources/InstalmentPlan.php b/vendor/unzerdev/php-sdk/src/Resources/InstalmentPlan.php
index a632652..bcdcf85 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/InstalmentPlan.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/InstalmentPlan.php
@@ -1,27 +1,5 @@
 <?php
-/**
- * Resource representing the installment plan for Installment Secured.
- *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @link  https://docs.unzer.com/
- *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Resources
- */
+
 namespace UnzerSDK\Resources;
 
 use DateTime;
@@ -30,6 +8,12 @@
 use UnzerSDK\Traits\CanAuthorizeWithCustomer;
 use stdClass;
 
+/**
+ * Resource representing the installment plan for Installment Secured.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
 class InstalmentPlan extends BasePaymentType
 {
     use CanAuthorizeWithCustomer;
@@ -80,30 +64,30 @@ class InstalmentPlan extends BasePaymentType
     private $installmentRates;
 
     /**
-     * @param int    $numberOfRates
-     * @param string $dayOfPurchase
-     * @param float  $totalPurchaseAmount
-     * @param float  $totalInterestAmount
-     * @param float  $totalAmount
-     * @param float  $effectiveInterestRate
-     * @param float  $nominalInterestRate
-     * @param float  $feeFirstRate
-     * @param float  $feePerRate
-     * @param float  $monthlyRate
-     * @param float  $lastRate
+     * @param int|null    $numberOfRates
+     * @param string|null $dayOfPurchase
+     * @param float|null  $totalPurchaseAmount
+     * @param float|null  $totalInterestAmount
+     * @param float|null  $totalAmount
+     * @param float|null  $effectiveInterestRate
+     * @param float|null  $nominalInterestRate
+     * @param float|null  $feeFirstRate
+     * @param float|null  $feePerRate
+     * @param float|null  $monthlyRate
+     * @param float|null  $lastRate
      */
     public function __construct(
-        $numberOfRates = null,
-        $dayOfPurchase = null,
-        $totalPurchaseAmount = null,
-        $totalInterestAmount = null,
-        $totalAmount = null,
-        $effectiveInterestRate = null,
-        $nominalInterestRate = null,
-        $feeFirstRate = null,
-        $feePerRate = null,
-        $monthlyRate = null,
-        $lastRate = null
+        int    $numberOfRates = null,
+        string $dayOfPurchase = null,
+        float  $totalPurchaseAmount = null,
+        float  $totalInterestAmount = null,
+        float  $totalAmount = null,
+        float  $effectiveInterestRate = null,
+        float  $nominalInterestRate = null,
+        float  $feeFirstRate = null,
+        float  $feePerRate = null,
+        float  $monthlyRate = null,
+        float  $lastRate = null
     ) {
         $this->numberOfRates         = $numberOfRates;
         $this->dayOfPurchase         = $dayOfPurchase;
@@ -118,8 +102,6 @@ public function __construct(
         $this->lastRate              = $lastRate;
     }
 
-    //<editor-fold desc="Getters/Setters">
-
     /**
      * @return string|null
      */
@@ -152,7 +134,7 @@ public function getNumberOfRates(): ?int
      *
      * @return $this
      */
-    public function setNumberOfRates($numberOfRates): self
+    public function setNumberOfRates(?int $numberOfRates): self
     {
         $this->numberOfRates = $numberOfRates;
         return $this;
@@ -190,7 +172,7 @@ public function getTotalPurchaseAmount(): ?float
      *
      * @return $this
      */
-    public function setTotalPurchaseAmount($totalPurchaseAmount): self
+    public function setTotalPurchaseAmount(?float $totalPurchaseAmount): self
     {
         $this->totalPurchaseAmount = $totalPurchaseAmount;
         return $this;
@@ -209,7 +191,7 @@ public function getTotalInterestAmount(): ?float
      *
      * @return $this
      */
-    public function setTotalInterestAmount($totalInterestAmount): self
+    public function setTotalInterestAmount(?float $totalInterestAmount): self
     {
         $this->totalInterestAmount = $totalInterestAmount;
         return $this;
@@ -228,7 +210,7 @@ public function getTotalAmount(): ?float
      *
      * @return $this
      */
-    public function setTotalAmount($totalAmount): self
+    public function setTotalAmount(?float $totalAmount): self
     {
         $this->totalAmount = $totalAmount;
         return $this;
@@ -247,7 +229,7 @@ public function getEffectiveInterestRate(): ?float
      *
      * @return $this
      */
-    public function setEffectiveInterestRate($effectiveInterestRate): self
+    public function setEffectiveInterestRate(?float $effectiveInterestRate): self
     {
         $this->effectiveInterestRate = $effectiveInterestRate;
         return $this;
@@ -266,7 +248,7 @@ public function getNominalInterestRate(): ?float
      *
      * @return $this
      */
-    public function setNominalInterestRate($nominalInterestRate): self
+    public function setNominalInterestRate(?float $nominalInterestRate): self
     {
         $this->nominalInterestRate = $nominalInterestRate;
         return $this;
@@ -285,7 +267,7 @@ public function getFeeFirstRate(): ?float
      *
      * @return $this
      */
-    public function setFeeFirstRate($feeFirstRate): self
+    public function setFeeFirstRate(?float $feeFirstRate): self
     {
         $this->feeFirstRate = $feeFirstRate;
         return $this;
@@ -304,7 +286,7 @@ public function getFeePerRate(): ?float
      *
      * @return $this
      */
-    public function setFeePerRate($feePerRate): self
+    public function setFeePerRate(?float $feePerRate): self
     {
         $this->feePerRate = $feePerRate;
         return $this;
@@ -323,7 +305,7 @@ public function getMonthlyRate(): ?float
      *
      * @return $this
      */
-    public function setMonthlyRate($monthlyRate): self
+    public function setMonthlyRate(?float $monthlyRate): self
     {
         $this->monthlyRate = $monthlyRate;
         return $this;
@@ -342,7 +324,7 @@ public function getLastRate(): ?float
      *
      * @return $this
      */
-    public function setLastRate($lastRate): self
+    public function setLastRate(?float $lastRate): self
     {
         $this->lastRate = $lastRate;
         return $this;
@@ -406,10 +388,6 @@ protected function setInstallmentRates(array $installmentRates): InstalmentPlan
         return $this;
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Overridable Methods">
-
     /**
      * {@inheritDoc}
      */
@@ -426,7 +404,7 @@ public function getTransactionParams(): array
     /**
      * {@inheritDoc}
      */
-    public function handleResponse(stdClass $response, $method = HttpAdapterInterface::REQUEST_GET): void
+    public function handleResponse(stdClass $response, string $method = HttpAdapterInterface::REQUEST_GET): void
     {
         parent::handleResponse($response, $method);
 
@@ -438,6 +416,4 @@ public function handleResponse(stdClass $response, $method = HttpAdapterInterfac
             $this->setInstallmentRates($rates);
         }
     }
-
-    //</editor-fold>
 }
diff --git a/vendor/unzerdev/php-sdk/src/Resources/InstalmentPlans.php b/vendor/unzerdev/php-sdk/src/Resources/InstalmentPlans.php
index 4bd2bea..fce2478 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/InstalmentPlans.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/InstalmentPlans.php
@@ -1,35 +1,19 @@
 <?php
+
+namespace UnzerSDK\Resources;
+
+use DateTime;
+use UnzerSDK\Adapter\HttpAdapterInterface;
+use stdClass;
+
 /**
  * Resource used to fetch instalment plans for Installment Secured payment method specified as parent resource.
  * Please use Unzer methods to fetch the list of instalment plans
  * (e.g. Unzer::fetchInstallmentPlans(...)).
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Resources
  */
-namespace UnzerSDK\Resources;
-
-use DateTime;
-use UnzerSDK\Adapter\HttpAdapterInterface;
-use stdClass;
-
 class InstalmentPlans extends AbstractUnzerResource
 {
     /** @var float */
@@ -67,8 +51,6 @@ public function __construct(
         $this->setOrderDate($orderDate);
     }
 
-    //<editor-fold desc="Getters / Setters">
-
     /**
      * @return float
      */
@@ -164,10 +146,6 @@ public function setOrderDate($orderDate): InstalmentPlans
         return $this;
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Overridable methods">
-
     /**
      * Returns the parameter array containing the values for the query string.
      *
@@ -192,18 +170,13 @@ protected function getQueryArray(): array
      */
     protected function getQueryString(): string
     {
-        $getParameterArray = $this->getQueryArray();
-        foreach ($getParameterArray as $key=> $parameter) {
-            $getParameterArray[$key] = $key . '=' . $parameter;
-        }
-
-        return '?' . implode('&', $getParameterArray);
+        return '?' . http_build_query($this->getQueryArray());
     }
 
     /**
      * {@inheritDoc}
      */
-    public function getResourcePath($httpMethod = HttpAdapterInterface::REQUEST_GET): string
+    public function getResourcePath(string $httpMethod = HttpAdapterInterface::REQUEST_GET): string
     {
         return 'plans' . $this->getQueryString();
     }
@@ -211,7 +184,7 @@ public function getResourcePath($httpMethod = HttpAdapterInterface::REQUEST_GET)
     /**
      * {@inheritDoc}
      */
-    public function handleResponse(stdClass $response, $method = HttpAdapterInterface::REQUEST_GET): void
+    public function handleResponse(stdClass $response, string $method = HttpAdapterInterface::REQUEST_GET): void
     {
         parent::handleResponse($response, $method);
 
@@ -225,6 +198,4 @@ public function handleResponse(stdClass $response, $method = HttpAdapterInterfac
             $this->setPlans($plans);
         }
     }
-
-    //</editor-fold>
 }
diff --git a/vendor/unzerdev/php-sdk/src/Resources/Keypair.php b/vendor/unzerdev/php-sdk/src/Resources/Keypair.php
index 49b8d96..6308e6e 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/Keypair.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/Keypair.php
@@ -1,32 +1,16 @@
 <?php
+
+namespace UnzerSDK\Resources;
+
+use UnzerSDK\Adapter\HttpAdapterInterface;
+use stdClass;
+
 /**
  * This represents the key pair resource.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Resources
  */
-namespace UnzerSDK\Resources;
-
-use UnzerSDK\Adapter\HttpAdapterInterface;
-use stdClass;
-
 class Keypair extends AbstractUnzerResource
 {
     /** @var string $publicKey */
@@ -64,8 +48,6 @@ class Keypair extends AbstractUnzerResource
     /** @var bool $validateBasket */
     private $validateBasket;
 
-    //<editor-fold desc="Getters/Setters">
-
     /**
      * @return string|null
      */
@@ -143,7 +125,7 @@ public function getSecureLevel(): string
      *
      * @return Keypair
      */
-    protected function setSecureLevel($secureLevel): Keypair
+    protected function setSecureLevel(?string $secureLevel): Keypair
     {
         $this->secureLevel = $secureLevel;
         return $this;
@@ -162,7 +144,7 @@ public function getAlias(): string
      *
      * @return Keypair
      */
-    protected function setAlias($alias): Keypair
+    protected function setAlias(?string $alias): Keypair
     {
         $this->alias = $alias;
         return $this;
@@ -181,7 +163,7 @@ public function getMerchantName(): string
      *
      * @return Keypair
      */
-    protected function setMerchantName($merchantName): Keypair
+    protected function setMerchantName(?string $merchantName): Keypair
     {
         $this->merchantName = $merchantName;
         return $this;
@@ -200,7 +182,7 @@ public function getMerchantAddress(): string
      *
      * @return Keypair
      */
-    protected function setMerchantAddress($merchantAddress): Keypair
+    protected function setMerchantAddress(?string $merchantAddress): Keypair
     {
         $this->merchantAddress = $merchantAddress;
         return $this;
@@ -259,20 +241,16 @@ public function isValidateBasket(): ?bool
      *
      * @return Keypair
      */
-    protected function setValidateBasket($validateBasket): Keypair
+    protected function setValidateBasket(?bool $validateBasket): Keypair
     {
         $this->validateBasket = $validateBasket;
         return $this;
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Overridable Methods">
-
     /**
      * @inheritDoc
      */
-    public function handleResponse(stdClass $response, $method = HttpAdapterInterface::REQUEST_GET): void
+    public function handleResponse(stdClass $response, string $method = HttpAdapterInterface::REQUEST_GET): void
     {
         parent::handleResponse($response, $method);
 
@@ -291,10 +269,8 @@ public function handleResponse(stdClass $response, $method = HttpAdapterInterfac
     /**
      * @inheritDoc
      */
-    protected function getResourcePath($httpMethod = HttpAdapterInterface::REQUEST_GET): string
+    protected function getResourcePath(string $httpMethod = HttpAdapterInterface::REQUEST_GET): string
     {
         return parent::getResourcePath($httpMethod) . ($this->isDetailed() ? '/types' : '');
     }
-
-    //</editor-fold>
 }
diff --git a/vendor/unzerdev/php-sdk/src/Resources/Metadata.php b/vendor/unzerdev/php-sdk/src/Resources/Metadata.php
index 384b01b..3d2f667 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/Metadata.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/Metadata.php
@@ -1,35 +1,20 @@
 <?php
-/**
- * This represents the metadata resource.
- *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @link  https://docs.unzer.com/
- *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Resources
- */
+
 namespace UnzerSDK\Resources;
 
 use UnzerSDK\Adapter\HttpAdapterInterface;
+use stdClass;
+
 use function count;
 use function in_array;
 use function is_callable;
-use stdClass;
 
+/**
+ * This represents the metadata resource.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
 class Metadata extends AbstractUnzerResource
 {
     private $metadata = [];
@@ -37,8 +22,6 @@ class Metadata extends AbstractUnzerResource
     protected $shopType;
     protected $shopVersion;
 
-    //<editor-fold desc="Setters/Getters">
-
     /**
      * @return string|null
      */
@@ -85,7 +68,7 @@ public function setShopVersion(string $shopVersion): Metadata
      *
      * @return Metadata
      */
-    public function addMetadata($name, $value): Metadata
+    public function addMetadata(string $name, string $value): Metadata
     {
         if (!in_array(strtolower($name), ['sdkversion', 'sdktype', 'shoptype', 'shopversion'])) {
             $this->metadata[$name] = $value;
@@ -101,15 +84,11 @@ public function addMetadata($name, $value): Metadata
      *
      * @return mixed
      */
-    public function getMetadata($name)
+    public function getMetadata(string $name)
     {
         return $this->metadata[$name] ?? null;
     }
 
-    //</editor-fold>>
-
-    //<editor-fold desc="Overridable Methods">
-
     /**
      * Add the dynamically set meta data.
      * {@inheritDoc}
@@ -121,10 +100,10 @@ public function expose()
     }
 
     /**
-     * Add custom properties (i. e. properties without setter) to the metadata array.
+     * Add custom properties (i.e. properties without setter) to the metadata array.
      * {@inheritDoc}
      */
-    public function handleResponse(stdClass $response, $method = HttpAdapterInterface::REQUEST_GET): void
+    public function handleResponse(stdClass $response, string $method = HttpAdapterInterface::REQUEST_GET): void
     {
         parent::handleResponse($response, $method);
 
@@ -135,6 +114,4 @@ public function handleResponse(stdClass $response, $method = HttpAdapterInterfac
             }
         }
     }
-
-    //</editor-fold>
 }
diff --git a/vendor/unzerdev/php-sdk/src/Resources/PaylaterInstallmentPlans.php b/vendor/unzerdev/php-sdk/src/Resources/PaylaterInstallmentPlans.php
new file mode 100644
index 0000000..4e132d2
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/src/Resources/PaylaterInstallmentPlans.php
@@ -0,0 +1,205 @@
+<?php
+
+namespace UnzerSDK\Resources;
+
+use UnzerSDK\Adapter\HttpAdapterInterface;
+use stdClass;
+use UnzerSDK\Resources\EmbeddedResources\Paylater\InstallmentPlansQuery;
+use UnzerSDK\Resources\EmbeddedResources\Paylater\InstallmentPlan;
+use UnzerSDK\Traits\HasStates;
+
+/**
+ * Resource used to fetch instalment plans for Installment Secured payment method specified as parent resource.
+ * Please use Unzer methods to fetch the list of instalment plans
+ * (e.g. Unzer::fetchInstallmentPlans(...)).
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+class PaylaterInstallmentPlans extends AbstractUnzerResource
+{
+    use HasStates;
+
+    /** @var float */
+    private $amount;
+
+    /** @var string */
+    private $currency;
+
+    /** @var string */
+    private $country;
+
+    /** @var string */
+    private $customerType;
+
+    /** @var InstallmentPlan[] $plans */
+    private $plans = [];
+
+    /** @var InstallmentPlansQuery Query parameter used to fetch available installment plans. */
+    private $queryParameter;
+
+    /**
+     * @return float
+     */
+    public function getAmount(): ?float
+    {
+        return $this->amount;
+    }
+
+    /**
+     * @param float $amount
+     *
+     * @return PaylaterInstallmentPlans
+     */
+    public function setAmount(float $amount): PaylaterInstallmentPlans
+    {
+        $this->amount = $amount;
+        return $this;
+    }
+
+    /**
+     * @return string
+     */
+    public function getCurrency(): ?string
+    {
+        return $this->currency;
+    }
+
+    /**
+     * @param string $currency
+     *
+     * @return InstalmentPlans
+     */
+    public function setCurrency(string $currency): PaylaterInstallmentPlans
+    {
+        $this->currency = $currency;
+        return $this;
+    }
+
+    /**
+     * @return string
+     */
+    public function getCountry(): ?string
+    {
+        return $this->country;
+    }
+
+    /**
+     * @param string $country
+     *
+     * @return PaylaterInstallmentPlans
+     */
+    public function setCountry(string $country): PaylaterInstallmentPlans
+    {
+        $this->country = $country;
+        return $this;
+    }
+
+    /**
+     * @return string
+     */
+    public function getCustomerType(): ?string
+    {
+        return $this->customerType;
+    }
+
+    /**
+     * @param string $customerType
+     *
+     * @return PaylaterInstallmentPlans
+     */
+    public function setCustomerType(string $customerType): PaylaterInstallmentPlans
+    {
+        $this->customerType = $customerType;
+        return $this;
+    }
+
+    /**
+     * @return InstallmentPlan[]
+     */
+    public function getPlans(): array
+    {
+        return $this->plans;
+    }
+
+    /**
+     * @param stdClass[] $plans
+     *
+     * @return InstalmentPlans
+     */
+    protected function setPlans(array $plans): PaylaterInstallmentPlans
+    {
+        $this->plans = $plans;
+        return $this;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getResourcePath(string $httpMethod = HttpAdapterInterface::REQUEST_GET): string
+    {
+        return 'plans' . $this->getQueryString();
+    }
+
+    /**
+     * Returns the query string for this resource.
+     *
+     * @return string
+     */
+    protected function getQueryString(): string
+    {
+        return '?' . http_build_query($this->getQueryArray());
+    }
+
+    /**
+     * Returns the parameter array containing the values for the query string.
+     *
+     * @return array
+     */
+    protected function getQueryArray(): array
+    {
+        $parameters = [];
+        if ($this->queryParameter === null) {
+            return $parameters;
+        }
+
+        return $this->getQueryParameter()->expose();
+    }
+
+    /**
+     * @return InstallmentPlansQuery
+     */
+    public function getQueryParameter(): InstallmentPlansQuery
+    {
+        return $this->queryParameter;
+    }
+
+    /**
+     * @param InstallmentPlansQuery $queryParameter
+     *
+     * @return PaylaterInstallmentPlans
+     */
+    public function setQueryParameter(InstallmentPlansQuery $queryParameter): PaylaterInstallmentPlans
+    {
+        $this->queryParameter = $queryParameter;
+        return $this;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function handleResponse(stdClass $response, string $method = HttpAdapterInterface::REQUEST_GET): void
+    {
+        parent::handleResponse($response, $method);
+
+        if (isset($response->plans)) {
+            $plans = [];
+            foreach ($response->plans as $plan) {
+                $instalment = new InstallmentPlan();
+                $instalment->handleResponse($plan);
+                $plans[] = $instalment;
+            }
+            $this->setPlans($plans);
+        }
+    }
+}
diff --git a/vendor/unzerdev/php-sdk/src/Resources/Payment.php b/vendor/unzerdev/php-sdk/src/Resources/Payment.php
index 624241e..f91ae33 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/Payment.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/Payment.php
@@ -1,27 +1,5 @@
 <?php
-/**
- * This represents the payment resource.
- *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @link  https://docs.unzer.com/
- *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Resources
- */
+
 namespace UnzerSDK\Resources;
 
 use UnzerSDK\Adapter\HttpAdapterInterface;
@@ -36,6 +14,7 @@
 use UnzerSDK\Resources\TransactionTypes\Authorization;
 use UnzerSDK\Resources\TransactionTypes\Cancellation;
 use UnzerSDK\Resources\TransactionTypes\Charge;
+use UnzerSDK\Resources\TransactionTypes\Chargeback;
 use UnzerSDK\Resources\TransactionTypes\Payout;
 use UnzerSDK\Resources\TransactionTypes\Shipment;
 use UnzerSDK\Services\IdService;
@@ -48,6 +27,12 @@
 
 use function is_string;
 
+/**
+ * This represents the payment resource.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
 class Payment extends AbstractUnzerResource
 {
     use HasPaymentState;
@@ -67,9 +52,28 @@ class Payment extends AbstractUnzerResource
     /** @var array $shipments */
     private $shipments = [];
 
-    /** @var array $charges */
+    /** @var Charge[] $charges */
     private $charges = [];
 
+    /** @var Chargeback[] $chargebacks */
+    private $chargebacks = [];
+
+
+    /**
+     * Associative array using the ID of the cancellations as the key.
+     *
+     * @var array $reversals
+     */
+    private $reversals = [];
+
+    /**
+     * Associative array using the ID of the cancellations as the key.
+     *
+     * @var array $refunds
+     */
+    private $refunds = [];
+
+
     /** @var Customer $customer */
     private $customer;
 
@@ -85,6 +89,9 @@ class Payment extends AbstractUnzerResource
     /** @var Basket $basket */
     private $basket;
 
+    /** @var Paypage $payPage */
+    private $payPage;
+
     /**
      * @param null $parent
      */
@@ -95,8 +102,6 @@ public function __construct($parent = null)
         $this->setParentResource($parent);
     }
 
-    //<editor-fold desc="Setters/Getters">
-
     /**
      * Returns the redirectUrl set by the API.
      *
@@ -114,12 +119,28 @@ public function getRedirectUrl(): ?string
      *
      * @return Payment
      */
-    protected function setRedirectUrl($redirectUrl): Payment
+    protected function setRedirectUrl(?string $redirectUrl): Payment
     {
         $this->redirectUrl = $redirectUrl;
         return $this;
     }
 
+    /**
+     * @return Chargeback[]
+     */
+    public function getChargebacks(): array
+    {
+        return $this->chargebacks;
+    }
+
+    /**
+     * @param array $chargebacks
+     */
+    public function setChargebacks(array $chargebacks): void
+    {
+        $this->chargebacks = $chargebacks;
+    }
+
     /**
      * Retrieves the Authorization object of this payment.
      * Fetches the Authorization if it has not been fetched before and the lazy flag is not set.
@@ -133,7 +154,7 @@ protected function setRedirectUrl($redirectUrl): Payment
      * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
-    public function getAuthorization($lazy = false)
+    public function getAuthorization(bool $lazy = false)
     {
         $authorization = $this->authorization;
         if (!$lazy && $authorization !== null) {
@@ -169,7 +190,7 @@ public function setAuthorization(Authorization $authorize): Payment
      * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
-    public function getPayout($lazy = false)
+    public function getPayout(bool $lazy = false)
     {
         $payout = $this->payout;
         if (!$lazy && $payout !== null) {
@@ -216,6 +237,20 @@ public function addCharge(Charge $charge): self
         return $this;
     }
 
+    /**
+     * Adds a Charge object to this Payment and stores it in the charges array.
+     *
+     * @param Charge $chargeback
+     *
+     * @return $this
+     */
+    private function addChargeback(Chargeback $chargeback): self
+    {
+        $chargeback->setPayment($this);
+        $this->chargebacks[] = $chargeback;
+        return $this;
+    }
+
     /**
      * Retrieves a Charge object from the charges array of this Payment object by its Id.
      * Fetches the Charge if it has not been fetched before and the lazy flag is not set.
@@ -230,7 +265,7 @@ public function addCharge(Charge $charge): self
      * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
-    public function getCharge($chargeId, $lazy = false): ?Charge
+    public function getCharge(string $chargeId, bool $lazy = false): ?Charge
     {
         /** @var Charge $charge */
         foreach ($this->charges as $charge) {
@@ -244,6 +279,38 @@ public function getCharge($chargeId, $lazy = false): ?Charge
         return null;
     }
 
+    /**
+     * Retrieves a Chargeback object from the chargebacks array of this Payment object by its ID.
+     * Fetches the Charge if it has not been fetched before and the lazy flag is not set.
+     * Returns null if the Charge does not exist.
+     *
+     * @param string $chargeId The ID of the Charge to be retrieved.
+     * @param bool   $lazy     Enables lazy loading if set to true which results in the object not being updated via
+     *                         API and possibly containing just the meta data known from the Payment object response.
+     *
+     * @return Charge|null The retrieved Charge object or null if it does not exist.
+     *
+     * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
+     * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
+     */
+    public function getChargeback(string $chargebackId, ?string $chargeId, bool $lazy = false): ?Chargeback
+    {
+        /** @var Chargeback $chargeback */
+        foreach ($this->chargebacks as $chargeback) {
+            $parentResource = $chargeback->getParentResource();
+            if ($chargeback->getId() === $chargebackId) {
+                if ($parentResource instanceof Charge && $parentResource->getId() !== $chargeId) {
+                    continue;
+                }
+                if (!$lazy) {
+                    $this->getResource($chargeback);
+                }
+                return $chargeback;
+            }
+        }
+        return null;
+    }
+
     /**
      * Retrieves a Charge object by its index in the charges array.
      * Fetches the Charge if it has not been fetched before and the lazy flag is not set.
@@ -258,7 +325,7 @@ public function getCharge($chargeId, $lazy = false): ?Charge
      * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
-    public function getChargeByIndex($index, $lazy = false)
+    public function getChargeByIndex(int $index, bool $lazy = false)
     {
         $resource = null;
         if (isset($this->getCharges()[$index])) {
@@ -316,6 +383,50 @@ public function getCustomer(): ?Customer
         return $this->customer;
     }
 
+    /**
+     * Reference this payment object to the passed PayPage resource.
+     * The PayPage resource can be passed as PayPage object or the Id of a PayPage resource.
+     * If the PayPage object has not been created yet via API this is done automatically.
+     *
+     * @param PayPage|string|null $payPage The PayPage object or the id of the PayPage to be referenced by the Payment.
+     *
+     * @return Payment This Payment object.
+     *
+     * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
+     * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
+     */
+    public function setPayPage($payPage): Payment
+    {
+        if (empty($payPage)) {
+            return $this;
+        }
+
+        $unzer = $this->getUnzerObject();
+
+        /** @var PayPage $payPageObject */
+        $payPageObject = $payPage;
+
+        if (is_string($payPage)) {
+            $payPageObject = (new Paypage(0, '', ''))
+                ->setId($payPage)
+                ->setPayment($this);
+        }
+
+        $payPageObject->setParentResource($unzer);
+        $this->payPage = $payPageObject;
+        return $this;
+    }
+
+    /**
+     * Returns the PayPage object referenced by this Payment.
+     *
+     * @return PayPage|null The PayPage object referenced by this Payment or null if no PayPage could be found.
+     */
+    public function getPayPage(): ?PayPage
+    {
+        return $this->payPage;
+    }
+
     /**
      * Returns the Payment Type object referenced by this Payment or throws a RuntimeException if none exists.
      *
@@ -330,7 +441,7 @@ public function getPaymentType(): ?BasePaymentType
      * Sets the Payments reference to the given PaymentType resource.
      * The PaymentType can be either a PaymentType object or the id of a PaymentType resource.
      *
-     * @param mixed $paymentType The PaymentType object or the id of the PaymentType to be referenced.
+     * @param BasePaymentType|string|null $paymentType The PaymentType object or the id of the PaymentType to be referenced.
      *
      * @return Payment This Payment object.
      *
@@ -375,7 +486,7 @@ public function getMetadata(): ?Metadata
      * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
-    public function setMetadata($metadata): Payment
+    public function setMetadata(?Metadata $metadata): Payment
     {
         if (!$metadata instanceof Metadata) {
             return $this;
@@ -408,7 +519,7 @@ public function getBasket(): ?Basket
      * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
-    public function setBasket($basket): Payment
+    public function setBasket(?Basket $basket): Payment
     {
         $this->basket = $basket;
 
@@ -439,8 +550,10 @@ public function setBasket($basket): Payment
      *
      * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
+     *
+     * @deprecated since 3.2.0 Please use getCancellation() method of a Charge or Authorization object instead.
      */
-    public function getCancellation($cancellationId, $lazy = false): ?Cancellation
+    public function getCancellation(string $cancellationId, bool $lazy = false): ?Cancellation
     {
         /** @var Cancellation $cancellation */
         foreach ($this->getCancellations() as $cancellation) {
@@ -466,6 +579,12 @@ public function getCancellation($cancellationId, $lazy = false): ?Cancellation
      */
     public function getCancellations(): array
     {
+        if (!empty($this->refunds) || !(empty($this->reversals))) {
+            return array_merge(
+                array_values($this->reversals),
+                array_values($this->refunds)
+            );
+        }
         $refunds = [];
 
         /** @var Charge $charge */
@@ -513,7 +632,7 @@ public function getShipments(): array
      * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
-    public function getShipment($shipmentId, $lazy = false): ?Shipment
+    public function getShipment(string $shipmentId, bool $lazy = false): ?Shipment
     {
         /** @var Shipment $shipment */
         foreach ($this->getShipments() as $shipment) {
@@ -573,7 +692,7 @@ public function getCurrency(): string
      * @throws UnzerApiException
      * @throws RuntimeException
      */
-    public function getInitialTransaction($lazy = false): ?AbstractTransactionType
+    public function getInitialTransaction(bool $lazy = false): ?AbstractTransactionType
     {
         return $this->getAuthorization($lazy) ?? $this->getChargeByIndex(0, $lazy);
     }
@@ -591,14 +710,73 @@ protected function setCurrency(string $currency): self
         return $this;
     }
 
-    //</editor-fold>
+    /**
+     * @return array Associative array with cancellation id as the key and the Cancellation object as value.
+     */
+    public function getRefunds(): array
+    {
+        return $this->refunds;
+    }
+
+    /**
+     * @param array $refunds
+     *
+     * @return Payment
+     */
+    public function setRefunds(array $refunds): Payment
+    {
+        $this->refunds = $refunds;
+        return $this;
+    }
+
+    /**
+     * @param Cancellation $refund
+     *
+     * @return Payment
+     */
+    public function addRefund(Cancellation $refund): Payment
+    {
+        $this->refunds[$refund->getId()] = $refund;
+        return $this;
+    }
+
+    /**
+     * @return array Associative array with cancellation id as the key and the Cancellation object as value.
+     */
+    public function getReversals(): array
+    {
+        return $this->reversals;
+    }
 
-    //<editor-fold desc="Overridable Methods">
+    /**
+     * @param array $reversals
+     *
+     * @return Payment
+     */
+    public function setReversals(array $reversals): Payment
+    {
+        $this->reversals = $reversals;
+        return $this;
+    }
+
+    /**
+     * Adds a Cancellation to the associative reversal array with the cancellation id as the key. If a cancellation with
+     * that ID already exists it will be overwritten.
+     *
+     * @param Cancellation $reversal
+     *
+     * @return Payment
+     */
+    public function addReversal(Cancellation $reversal): Payment
+    {
+        $this->reversals[$reversal->getId()] = $reversal;
+        return $this;
+    }
 
     /**
      * {@inheritDoc}
      */
-    protected function getResourcePath($httpMethod = HttpAdapterInterface::REQUEST_GET): string
+    protected function getResourcePath(string $httpMethod = HttpAdapterInterface::REQUEST_GET): string
     {
         return 'payments';
     }
@@ -609,7 +787,7 @@ protected function getResourcePath($httpMethod = HttpAdapterInterface::REQUEST_G
      * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
-    public function handleResponse(stdClass $response, $method = HttpAdapterInterface::REQUEST_GET): void
+    public function handleResponse(stdClass $response, string $method = HttpAdapterInterface::REQUEST_GET): void
     {
         parent::handleResponse($response, $method);
 
@@ -634,10 +812,6 @@ public function getExternalId(): ?string
         return $this->getOrderId();
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Transactions">
-
     /**
      * Performs a Cancellation transaction on the Payment.
      * If no amount is given a full cancel will be performed i. e. all Charges and Authorizations will be cancelled.
@@ -655,11 +829,11 @@ public function getExternalId(): ?string
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
     public function cancelAmount(
-        float $amount = null,
-        $reasonCode = CancelReasonCodes::REASON_CODE_CANCEL,
-        string $paymentReference = null,
-        float $amountNet = null,
-        float $amountVat = null
+        float   $amount = null,
+        ?string $reasonCode = CancelReasonCodes::REASON_CODE_CANCEL,
+        string  $paymentReference = null,
+        float   $amountNet = null,
+        float   $amountVat = null
     ): array {
         return $this->getUnzerObject()->cancelPayment($this, $amount, $reasonCode, $paymentReference, $amountNet, $amountVat);
     }
@@ -684,17 +858,16 @@ public function cancelAuthorizationAmount(float $amount = null): ?Cancellation
     /**
      * Performs a Charge transaction on the payment.
      *
-     * @param null $amount   The amount to be charged.
-     * @param null $currency The currency of the charged amount.
+     * @param float|null $amount The amount to be charged.
      *
      * @return Charge|AbstractUnzerResource The resulting Charge object.
      *
      * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
-    public function charge($amount = null, $currency = null): Charge
+    public function charge(float $amount = null): Charge
     {
-        return $this->getUnzerObject()->chargePayment($this, $amount, $currency);
+        return $this->getUnzerObject()->chargePayment($this, $amount);
     }
 
     /**
@@ -708,15 +881,11 @@ public function charge($amount = null, $currency = null): Charge
      * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
-    public function ship($invoiceId = null, $orderId = null)
+    public function ship(string $invoiceId = null, string $orderId = null)
     {
         return $this->getUnzerObject()->ship($this, $invoiceId, $orderId);
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Payment Update">
-
     /**
      * @param array $transactions
      *
@@ -749,6 +918,9 @@ private function updateResponseTransactions(array $transactions = []): void
                 case TransactionTypes::PAYOUT:
                     $this->updatePayoutTransaction($transaction);
                     break;
+                case TransactionTypes::CHARGEBACK:
+                    $this->updateChargebackTransaction($transaction);
+                    break;
                 default:
                     // skip
                     break;
@@ -759,12 +931,11 @@ private function updateResponseTransactions(array $transactions = []): void
     /**
      * Handles the resources from a response and updates the payment object accordingly.
      *
-     * @param $resources
+     * @param stdClass $resources
      *
      * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
-     * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
-    private function updateResponseResources($resources): void
+    private function updateResponseResources(stdClass $resources): void
     {
         if (isset($resources->paymentId)) {
             $this->setId($resources->paymentId);
@@ -779,6 +950,11 @@ private function updateResponseResources($resources): void
             }
         }
 
+        $payPageId = $resources->payPageId ?? null;
+        if (!empty($payPageId)) {
+            $this->setPayPage($payPageId);
+        }
+
         if (isset($resources->typeId) && !empty($resources->typeId) && !$this->paymentType instanceof BasePaymentType) {
             $this->paymentType = $this->getUnzerObject()->fetchPaymentType($resources->typeId);
         }
@@ -806,7 +982,7 @@ private function updateResponseResources($resources): void
      * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
-    private function updateAuthorizationTransaction($transaction): void
+    private function updateAuthorizationTransaction(stdClass $transaction): void
     {
         $transactionId = IdService::getResourceIdFromUrl($transaction->url, IdStrings::AUTHORIZE);
         $authorization = $this->getAuthorization(true);
@@ -814,7 +990,8 @@ private function updateAuthorizationTransaction($transaction): void
             $authorization = (new Authorization())->setPayment($this)->setId($transactionId);
             $this->setAuthorization($authorization);
         }
-        $authorization->setAmount($transaction->amount);
+
+        $authorization->handleResponse($transaction);
     }
 
     /**
@@ -826,7 +1003,7 @@ private function updateAuthorizationTransaction($transaction): void
      * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
-    private function updateChargeTransaction($transaction): void
+    private function updateChargeTransaction(stdClass $transaction): void
     {
         $transactionId = IdService::getResourceIdFromUrl($transaction->url, IdStrings::CHARGE);
         $charge        = $this->getCharge($transactionId, true);
@@ -834,7 +1011,8 @@ private function updateChargeTransaction($transaction): void
             $charge = (new Charge())->setPayment($this)->setId($transactionId);
             $this->addCharge($charge);
         }
-        $charge->setAmount($transaction->amount);
+
+        $charge->handleResponse($transaction);
     }
 
     /**
@@ -846,20 +1024,28 @@ private function updateChargeTransaction($transaction): void
      * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
-    private function updateReversalTransaction($transaction): void
+    private function updateReversalTransaction(stdClass $transaction): void
     {
         $transactionId = IdService::getResourceIdFromUrl($transaction->url, IdStrings::CANCEL);
-        $authorization = $this->getAuthorization(true);
-        if (!$authorization instanceof Authorization) {
-            throw new RuntimeException('The Authorization object can not be found.');
-        }
 
-        $cancellation = $authorization->getCancellation($transactionId, true);
-        if (!$cancellation instanceof Cancellation) {
+        $isPaymentCancellation = IdService::isPaymentCancellation($transaction->url);
+        if ($isPaymentCancellation) {
             $cancellation = (new Cancellation())->setPayment($this)->setId($transactionId);
-            $authorization->addCancellation($cancellation);
+            $this->addReversal($cancellation);
+        } else {
+            $initialTransaction = $this->getInitialTransaction(true);
+            if (!$initialTransaction instanceof Authorization && !$initialTransaction instanceof Charge) {
+                throw new RuntimeException('The initial transaction object (Authorize or Charge) can not be found.');
+            }
+
+            $cancellation = $initialTransaction->getCancellation($transactionId, true);
+            if (!$cancellation instanceof Cancellation) {
+                $cancellation = (new Cancellation())->setPayment($this)->setId($transactionId);
+                $initialTransaction->addCancellation($cancellation);
+            }
         }
-        $cancellation->setAmount($transaction->amount);
+
+        $cancellation->handleResponse($transaction);
     }
 
     /**
@@ -871,22 +1057,30 @@ private function updateReversalTransaction($transaction): void
      * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
-    private function updateRefundTransaction($transaction): void
+    private function updateRefundTransaction(stdClass $transaction): void
     {
         $refundId = IdService::getResourceIdFromUrl($transaction->url, IdStrings::CANCEL);
-        $chargeId = IdService::getResourceIdFromUrl($transaction->url, IdStrings::CHARGE);
-
-        $charge = $this->getCharge($chargeId, true);
-        if (!$charge instanceof Charge) {
-            throw new RuntimeException('The Charge object can not be found.');
+        $isPaymentCancellation = IdService::isPaymentCancellation($transaction->url);
+        if ($isPaymentCancellation) {
+            $cancellation = (new Cancellation())->setPayment($this)->setId($refundId);
+            $this->addRefund($cancellation);
         }
 
-        $cancellation = $charge->getCancellation($refundId, true);
-        if (!$cancellation instanceof Cancellation) {
-            $cancellation = (new Cancellation())->setPayment($this)->setId($refundId);
-            $charge->addCancellation($cancellation);
+        if (!$isPaymentCancellation) {
+            $chargeId = IdService::getResourceIdFromUrl($transaction->url, IdStrings::CHARGE);
+            $charge = $this->getCharge($chargeId, true);
+            if (!$charge instanceof Charge) {
+                throw new RuntimeException('The Charge object can not be found.');
+            }
+            $cancellation = $charge->getCancellation($refundId, true);
+
+            if (!$cancellation instanceof Cancellation) {
+                $cancellation = (new Cancellation())->setPayment($this)->setId($refundId);
+                $charge->addCancellation($cancellation);
+            }
         }
-        $cancellation->setAmount($transaction->amount);
+
+        $cancellation->handleResponse($transaction);
     }
 
     /**
@@ -898,7 +1092,7 @@ private function updateRefundTransaction($transaction): void
      * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
-    private function updateShipmentTransaction($transaction): void
+    private function updateShipmentTransaction(stdClass $transaction): void
     {
         $shipmentId = IdService::getResourceIdFromUrl($transaction->url, IdStrings::SHIPMENT);
         $shipment   = $this->getShipment($shipmentId, true);
@@ -906,7 +1100,8 @@ private function updateShipmentTransaction($transaction): void
             $shipment = (new Shipment())->setId($shipmentId);
             $this->addShipment($shipment);
         }
-        $shipment->setAmount($transaction->amount);
+
+        $shipment->handleResponse($transaction);
     }
 
     /**
@@ -918,7 +1113,7 @@ private function updateShipmentTransaction($transaction): void
      * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
-    private function updatePayoutTransaction($transaction): void
+    private function updatePayoutTransaction(stdClass $transaction): void
     {
         $payoutId = IdService::getResourceIdFromUrl($transaction->url, IdStrings::PAYOUT);
         $payout   = $this->getPayout(true);
@@ -926,8 +1121,50 @@ private function updatePayoutTransaction($transaction): void
             $payout = (new Payout())->setId($payoutId);
             $this->setPayout($payout);
         }
-        $payout->setAmount($transaction->amount);
+
+        $payout->handleResponse($transaction);
     }
 
-    //</editor-fold>
+    /**
+     * This updates the local chargeback object referenced by this Payment with the given chargeback transaction from the
+     * Payment response.
+     *
+     * @param stdClass $transaction The transaction from the Payment response containing the chargeback data.
+     *
+     * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
+     * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
+     */
+    private function updateChargebackTransaction(stdClass $transaction): void
+    {
+        // does chargeback refer to a specific charge transaction
+        // Get/create charge instance, if yes.
+        // does chargeback already exist?
+        // Add chargeback to charge transaction
+        $isPaymentChargeback = IdService::isPaymentChargeback($transaction->url);
+        $chargebackId = IdService::getResourceIdFromUrl($transaction->url, IdStrings::CHARGEBACK);
+
+
+        if (!$isPaymentChargeback) {
+            $chargeId = IdService::getResourceIdFromUrl($transaction->url, IdStrings::CHARGE);
+            $chargeback = $this->getChargeback($chargebackId, $chargeId, true);
+            $charge = $this->getCharge($chargeId, true);
+            if (!$chargeback instanceof Chargeback) {
+                $chargeback = (new Chargeback())->setId($chargebackId);
+                $this->addChargeback($chargeback);
+
+                if ($charge instanceof Charge) {
+                    $charge->addChargeback($chargeback);
+                    $chargeback->setParentResource($charge);
+                }
+            }
+        } else {
+            $chargeback = $this->getChargeback($chargebackId, null, true);
+            if (!$chargeback instanceof Chargeback) {
+                $chargeback = (new Chargeback())->setId($chargebackId);
+                $this->addChargeback($chargeback);
+            }
+        }
+
+        $chargeback->handleResponse($transaction);
+    }
 }
diff --git a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Alipay.php b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Alipay.php
index 656b2ca..de55328 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Alipay.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Alipay.php
@@ -1,27 +1,5 @@
 <?php
-/**
- * This represents the Alipay payment type.
- *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @link  https://docs.unzer.com/
- *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\PaymentTypes
- */
+
 namespace UnzerSDK\Resources\PaymentTypes;
 
 use UnzerSDK\Traits\CanDirectCharge;
diff --git a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Applepay.php b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Applepay.php
index 2eb1263..2f452bb 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Applepay.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Applepay.php
@@ -1,27 +1,5 @@
 <?php
-/**
- * This represents the Applepay payment type.
- *
- * Copyright (C) 2021 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @link  https://docs.unzer.com/
- *
- * @author  David Owusu <development@unzer.com>
- *
- * @package  UnzerSDK\PaymentTypes
- */
+
 namespace UnzerSDK\Resources\PaymentTypes;
 
 use stdClass;
@@ -29,13 +7,11 @@
 use UnzerSDK\Resources\EmbeddedResources\ApplePayHeader;
 use UnzerSDK\Traits\CanAuthorize;
 use UnzerSDK\Traits\CanDirectCharge;
-use UnzerSDK\Traits\HasGeoLocation;
 
 class Applepay extends BasePaymentType
 {
     use CanDirectCharge;
     use CanAuthorize;
-    use HasGeoLocation;
 
     /** @var string|null $applicationExpirationDate */
     private $applicationExpirationDate;
@@ -65,7 +41,7 @@ class Applepay extends BasePaymentType
     protected $header;
 
     /**
-     * ApplePay constructor.
+     * Apple Pay constructor.
      *
      * @param string|null         $version
      * @param string|null         $data
@@ -84,8 +60,6 @@ public function __construct(
         $this->header = $header;
     }
 
-    //<editor-fold desc="Getters/Setters"
-
     /**
      * @return string|null
      */
@@ -257,12 +231,10 @@ public function setVersion(?string $version): Applepay
         return $this;
     }
 
-    //</editor-fold>
-
     /**
      * @inheritDoc
      */
-    public function handleResponse(stdClass $response, $method = HttpAdapterInterface::REQUEST_GET): void
+    public function handleResponse(stdClass $response, string $method = HttpAdapterInterface::REQUEST_GET): void
     {
         parent::handleResponse($response, $method);
 
diff --git a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Bancontact.php b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Bancontact.php
index b2505e0..a68df46 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Bancontact.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Bancontact.php
@@ -1,29 +1,5 @@
 <?php
-/**
- * This represents the Bancontact payment type.
- *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @link  https://docs.unzer.com/
- *
- * @author  David Owusu <development@unzer.com>
- * @author  Florian Evertz <development@unzer.com>
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\PaymentTypes
- */
+
 namespace UnzerSDK\Resources\PaymentTypes;
 
 use UnzerSDK\Traits\CanDirectCharge;
diff --git a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/BasePaymentType.php b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/BasePaymentType.php
index a967f14..0410b1a 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/BasePaymentType.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/BasePaymentType.php
@@ -1,34 +1,24 @@
 <?php
-/**
- * This defines a base class for all payment types e.g. Card, GiroPay, etc.
- *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @link  https://docs.unzer.com/
- *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\PaymentTypes
- */
+
 namespace UnzerSDK\Resources\PaymentTypes;
 
 use UnzerSDK\Adapter\HttpAdapterInterface;
 use UnzerSDK\Resources\AbstractUnzerResource;
+use UnzerSDK\Traits\HasGeoLocation;
 
+/**
+ * This represents a payment type.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
 abstract class BasePaymentType extends AbstractUnzerResource
 {
+    use HasGeoLocation;
+
+    /** @var bool  */
+    protected const SUPPORT_DIRECT_PAYMENT_CANCEL = false;
+
     /**
      * Return true for invoice types.
      * This enables you to handle the invoice workflow correctly.
@@ -43,12 +33,15 @@ public function isInvoiceType(): bool
         return false;
     }
 
-    //<editor-fold desc="Overridable Methods">
+    public function supportsDirectPaymentCancel(): bool
+    {
+        return static::SUPPORT_DIRECT_PAYMENT_CANCEL;
+    }
 
     /**
      * {@inheritDoc}
      */
-    protected function getResourcePath($httpMethod = HttpAdapterInterface::REQUEST_GET): string
+    protected function getResourcePath(string $httpMethod = HttpAdapterInterface::REQUEST_GET): string
     {
         $path = 'types';
         if ($httpMethod !== HttpAdapterInterface::REQUEST_GET || $this->id === null) {
@@ -68,6 +61,4 @@ public function getTransactionParams(): array
     {
         return [];
     }
-
-    //</editor-fold>
 }
diff --git a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Card.php b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Card.php
index e7acd48..3a68888 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Card.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Card.php
@@ -1,27 +1,5 @@
 <?php
-/**
- * This represents the card payment type which supports credit card as well as debit card payments.
- *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @link  https://docs.unzer.com/
- *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\PaymentTypes
- */
+
 namespace UnzerSDK\Resources\PaymentTypes;
 
 use UnzerSDK\Adapter\HttpAdapterInterface;
@@ -30,18 +8,22 @@
 use UnzerSDK\Traits\CanDirectCharge;
 use UnzerSDK\Traits\CanPayout;
 use UnzerSDK\Traits\CanRecur;
-use UnzerSDK\Traits\HasGeoLocation;
 use UnzerSDK\Validators\ExpiryDateValidator;
 use RuntimeException;
 use stdClass;
 
+/**
+ * This represents the card payment type which supports credit card as well as debit card payments.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
 class Card extends BasePaymentType
 {
     use CanDirectCharge;
     use CanAuthorize;
     use CanPayout;
     use CanRecur;
-    use HasGeoLocation;
 
     /** @var string $number */
     protected $number;
@@ -70,19 +52,17 @@ class Card extends BasePaymentType
     /**
      * Card constructor.
      *
-     * @param string      $number
-     * @param string      $expiryDate
+     * @param string|null $number
+     * @param string|null $expiryDate
      * @param string|null $email
      */
-    public function __construct($number, $expiryDate, $email = null)
+    public function __construct(?string $number, ?string $expiryDate, string $email = null)
     {
         $this->setNumber($number);
         $this->setExpiryDate($expiryDate);
         $this->setEmail($email);
     }
 
-    //<editor-fold desc="Getters/Setters">
-
     /**
      * @return string
      */
@@ -92,11 +72,11 @@ public function getNumber(): string
     }
 
     /**
-     * @param string $pan
+     * @param string|null $pan
      *
      * @return Card
      */
-    public function setNumber($pan): Card
+    public function setNumber(?string $pan): Card
     {
         $this->number = $pan;
         return $this;
@@ -111,13 +91,12 @@ public function getExpiryDate(): ?string
     }
 
     /**
-     * @param string $expiryDate
+     * @param string|null $expiryDate
      *
      * @return Card
      *
-     * @throws RuntimeException
      */
-    public function setExpiryDate($expiryDate): Card
+    public function setExpiryDate(?string $expiryDate): Card
     {
         // Null value is allowed to be able to fetch a card object with nothing but the id set.
         if ($expiryDate === null) {
@@ -142,11 +121,11 @@ public function getCvc(): ?string
     }
 
     /**
-     * @param string $cvc
+     * @param string|null $cvc
      *
      * @return Card
      */
-    public function setCvc($cvc): Card
+    public function setCvc(?string $cvc): Card
     {
         $this->cvc = $cvc;
         return $this;
@@ -165,7 +144,7 @@ public function getCardHolder(): ?string
      *
      * @return Card
      */
-    public function setCardHolder($cardHolder): Card
+    public function setCardHolder(string $cardHolder): Card
     {
         $this->cardHolder = $cardHolder;
         return $this;
@@ -184,7 +163,7 @@ public function get3ds(): ?bool
      *
      * @return Card
      */
-    public function set3ds($card3ds): Card
+    public function set3ds(?bool $card3ds): Card
     {
         $this->card3ds = $card3ds;
         return $this;
@@ -239,10 +218,6 @@ public function setEmail(?string $email): Card
         return $this;
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Overridable Methods">
-
     /**
      * Rename internal property names to external property names.
      *
@@ -261,7 +236,7 @@ public function expose()
     /**
      * {@inheritDoc}
      */
-    public function handleResponse(stdClass $response, $method = HttpAdapterInterface::REQUEST_GET): void
+    public function handleResponse(stdClass $response, string $method = HttpAdapterInterface::REQUEST_GET): void
     {
         parent::handleResponse($response, $method);
 
@@ -270,6 +245,4 @@ public function handleResponse(stdClass $response, $method = HttpAdapterInterfac
             $this->cardDetails->handleResponse($response->cardDetails);
         }
     }
-
-    //</editor-fold>
 }
diff --git a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/EPS.php b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/EPS.php
index af56b47..2011e93 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/EPS.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/EPS.php
@@ -1,27 +1,5 @@
 <?php
-/**
- * This represents the EPS payment type.
- *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @link  https://docs.unzer.com/
- *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\PaymentTypes
- */
+
 namespace UnzerSDK\Resources\PaymentTypes;
 
 use UnzerSDK\Traits\CanDirectCharge;
@@ -33,8 +11,6 @@ class EPS extends BasePaymentType
     /** @var string $bic */
     protected $bic;
 
-    //<editor-fold desc="Getter/Setter">
-
     /**
      * @return string|null
      */
@@ -48,11 +24,9 @@ public function getBic(): ?string
      *
      * @return self
      */
-    public function setBic($bic): self
+    public function setBic(?string $bic): self
     {
         $this->bic = $bic;
         return $this;
     }
-
-    //</editor-fold>
 }
diff --git a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Giropay.php b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Giropay.php
index bdc0ab1..9d2a6f2 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Giropay.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Giropay.php
@@ -1,27 +1,5 @@
 <?php
-/**
- * This represents the GiroPay payment type.
- *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @link  https://docs.unzer.com/
- *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\PaymentTypes
- */
+
 namespace UnzerSDK\Resources\PaymentTypes;
 
 use UnzerSDK\Traits\CanDirectCharge;
diff --git a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Googlepay.php b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Googlepay.php
new file mode 100644
index 0000000..120ce02
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Googlepay.php
@@ -0,0 +1,146 @@
+<?php
+
+namespace UnzerSDK\Resources\PaymentTypes;
+
+use stdClass;
+use UnzerSDK\Adapter\HttpAdapterInterface;
+use UnzerSDK\Resources\EmbeddedResources\GooglePay\IntermediateSigningKey;
+use UnzerSDK\Resources\EmbeddedResources\GooglePay\SignedMessage;
+use UnzerSDK\Traits\CanAuthorize;
+use UnzerSDK\Traits\CanDirectCharge;
+
+/**
+ * Represents Google Pay type. It requires data from payment method token returned by Google in the `PaymentData`.
+ * These data are used to create the payment type on the Unzer API.
+ */
+class Googlepay extends BasePaymentType
+{
+    use CanDirectCharge;
+    use CanAuthorize;
+
+    /**
+     * @var string $protocolVersion
+     */
+    protected $protocolVersion;
+
+    /**
+     * @var string $signature
+     */
+    protected $signature;
+
+    /**
+     * @var IntermediateSigningKey $intermediateSigningKey
+     */
+    protected $intermediateSigningKey;
+
+    /** @var SignedMessage $signedMessage */
+    protected $signedMessage;
+
+    /** @var string $number */
+    private $number;
+
+    /** @var string $expiryDate */
+    private $expiryDate;
+
+    /**
+     * @param string                 $protocolVersion
+     * @param string                 $signature
+     * @param IntermediateSigningKey $intermediateSigningKey
+     * @param string                 $signedMessage
+     */
+    public function __construct(
+        ?string                 $protocolVersion = null,
+        ?string                 $signature = null,
+        ?IntermediateSigningKey $intermediateSigningKey = null,
+        ?SignedMessage          $signedMessage = null
+    ) {
+        $this->protocolVersion = $protocolVersion;
+        $this->signature = $signature;
+        $this->intermediateSigningKey = $intermediateSigningKey;
+        $this->signedMessage = $signedMessage;
+    }
+
+    public static function getResourceName(): string
+    {
+        return 'googlepay';
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function handleResponse(stdClass $response, string $method = HttpAdapterInterface::REQUEST_GET): void
+    {
+        parent::handleResponse($response, $method);
+
+        if (isset($response->intermediateSigningKey)) {
+            $this->intermediateSigningKey = new IntermediateSigningKey();
+            $this->intermediateSigningKey->handleResponse($response->intermediateSigningKey);
+        }
+    }
+
+    public function getNumber(): string
+    {
+        return $this->number;
+    }
+
+    protected function setNumber(string $number): Googlepay
+    {
+        $this->number = $number;
+        return $this;
+    }
+
+    public function getExpiryDate(): string
+    {
+        return $this->expiryDate;
+    }
+
+    protected function setExpiryDate(string $expiryDate): Googlepay
+    {
+        $this->expiryDate = $expiryDate;
+        return $this;
+    }
+
+    public function getProtocolVersion(): ?string
+    {
+        return $this->protocolVersion;
+    }
+
+    public function setProtocolVersion(?string $protocolVersion): Googlepay
+    {
+        $this->protocolVersion = $protocolVersion;
+        return $this;
+    }
+
+    public function getSignature(): ?string
+    {
+        return $this->signature;
+    }
+
+    public function setSignature(?string $signature): Googlepay
+    {
+        $this->signature = $signature;
+        return $this;
+    }
+
+    public function getIntermediateSigningKey(): ?IntermediateSigningKey
+    {
+        return $this->intermediateSigningKey;
+    }
+
+    public function setIntermediateSigningKey(?IntermediateSigningKey $intermediateSigningKey): Googlepay
+    {
+        $this->intermediateSigningKey = $intermediateSigningKey;
+        return $this;
+    }
+
+    public function getSignedMessage(): ?SignedMessage
+    {
+        return $this->signedMessage;
+    }
+
+    public function setSignedMessage(?SignedMessage $signedMessage): Googlepay
+    {
+        $this->signedMessage = $signedMessage;
+        return $this;
+    }
+}
diff --git a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Ideal.php b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Ideal.php
index 8f79f46..efed810 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Ideal.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Ideal.php
@@ -1,27 +1,5 @@
 <?php
-/**
- * This represents the iDEAL payment type.
- *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @link  https://docs.unzer.com/
- *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\PaymentTypes
- */
+
 namespace UnzerSDK\Resources\PaymentTypes;
 
 use UnzerSDK\Traits\CanDirectCharge;
@@ -33,8 +11,6 @@ class Ideal extends BasePaymentType
     /** @var string $bic */
     protected $bic;
 
-    //<editor-fold desc="Getter/Setter">
-
     /**
      * @return string|null
      */
@@ -44,15 +20,13 @@ public function getBic(): ?string
     }
 
     /**
-     * @param string $bic
+     * @param string|null $bic
      *
      * @return self
      */
-    public function setBic(string $bic): self
+    public function setBic(?string $bic): self
     {
         $this->bic = $bic;
         return $this;
     }
-
-    //</editor-fold>
 }
diff --git a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/InstallmentSecured.php b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/InstallmentSecured.php
index 682b099..1410d71 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/InstallmentSecured.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/InstallmentSecured.php
@@ -2,31 +2,18 @@
 /**
  * This represents the Installment Secured payment type.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\PaymentTypes
  */
+
 namespace UnzerSDK\Resources\PaymentTypes;
 
 use DateTime;
 use UnzerSDK\Resources\InstalmentPlan;
 
+/** @deprecated will be replaced by PaylaterInstallment.
+ * @see PaylaterInstallment
+ */
 class InstallmentSecured extends InstalmentPlan
 {
     /** @var string $iban */
@@ -51,8 +38,8 @@ public function __construct(InstalmentPlan $selectedPlan = null, $iban = null, $
     {
         parent::__construct();
 
-        $this->iban          = $iban;
-        $this->bic           = $bic;
+        $this->iban = $iban;
+        $this->bic = $bic;
         $this->accountHolder = $accountHolder;
         $this->setOrderDate($orderDate);
         $this->setInvoiceDate($invoiceDate);
@@ -67,7 +54,7 @@ public function __construct(InstalmentPlan $selectedPlan = null, $iban = null, $
      *
      * @return $this
      */
-    public function selectInstalmentPlan($plan): self
+    public function selectInstalmentPlan(?InstalmentPlan $plan): self
     {
         if ($plan instanceof InstalmentPlan) {
             $this->handleResponse((object)$plan->expose());
@@ -75,8 +62,6 @@ public function selectInstalmentPlan($plan): self
         return $this;
     }
 
-    //<editor-fold desc="Getters/Setters">
-
     /**
      * @return string|null
      */
@@ -90,7 +75,7 @@ public function getIban(): ?string
      *
      * @return $this
      */
-    public function setIban($iban): self
+    public function setIban(?string $iban): self
     {
         $this->iban = $iban;
         return $this;
@@ -109,7 +94,7 @@ public function getBic(): ?string
      *
      * @return $this
      */
-    public function setBic($bic): self
+    public function setBic(?string $bic): self
     {
         $this->bic = $bic;
         return $this;
@@ -128,11 +113,9 @@ public function getAccountHolder(): ?string
      *
      * @return $this
      */
-    public function setAccountHolder($accountHolder): self
+    public function setAccountHolder(?string $accountHolder): self
     {
         $this->accountHolder = $accountHolder;
         return $this;
     }
-
-    //</editor-fold>
 }
diff --git a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Invoice.php b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Invoice.php
index c7f6469..7717396 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Invoice.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Invoice.php
@@ -2,31 +2,18 @@
 /**
  * This represents the invoice payment type.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\PaymentTypes
  */
+
 namespace UnzerSDK\Resources\PaymentTypes;
 
 use UnzerSDK\Traits\CanDirectCharge;
 use UnzerSDK\Traits\IsInvoiceType;
 
+/**
+ * @deprecated since 1.2.3.0 Please switch to PaylaterInvoice.
+ */
 class Invoice extends BasePaymentType
 {
     use CanDirectCharge;
diff --git a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/InvoiceSecured.php b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/InvoiceSecured.php
index ecfd1c6..8baf4fc 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/InvoiceSecured.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/InvoiceSecured.php
@@ -2,31 +2,18 @@
 /**
  * This represents the invoice secured payment type.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\PaymentTypes
  */
+
 namespace UnzerSDK\Resources\PaymentTypes;
 
 use UnzerSDK\Traits\CanDirectChargeWithCustomer;
 use UnzerSDK\Traits\IsInvoiceType;
 
+/**
+ * @deprecated since 1.2.0.0 Please use PaylaterInvoice instead.
+ */
 class InvoiceSecured extends BasePaymentType
 {
     use CanDirectChargeWithCustomer;
diff --git a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Klarna.php b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Klarna.php
new file mode 100644
index 0000000..df0f130
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Klarna.php
@@ -0,0 +1,8 @@
+<?php
+
+namespace UnzerSDK\Resources\PaymentTypes;
+
+class Klarna extends BasePaymentType
+{
+    protected const SUPPORT_DIRECT_PAYMENT_CANCEL = true;
+}
diff --git a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/PIS.php b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/PIS.php
index 247a55a..e9d8136 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/PIS.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/PIS.php
@@ -1,27 +1,5 @@
 <?php
-/**
- * This represents the Sofort payment type.
- *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @link  https://docs.unzer.com/
- *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\PaymentTypes
- */
+
 namespace UnzerSDK\Resources\PaymentTypes;
 
 use UnzerSDK\Traits\CanDirectCharge;
diff --git a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/PayU.php b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/PayU.php
new file mode 100644
index 0000000..727f486
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/PayU.php
@@ -0,0 +1,10 @@
+<?php
+
+namespace UnzerSDK\Resources\PaymentTypes;
+
+use UnzerSDK\Traits\CanDirectCharge;
+
+class PayU extends BasePaymentType
+{
+    use CanDirectCharge;
+}
diff --git a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/PaylaterDirectDebit.php b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/PaylaterDirectDebit.php
new file mode 100644
index 0000000..fb7c3a1
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/PaylaterDirectDebit.php
@@ -0,0 +1,42 @@
+<?php
+
+namespace UnzerSDK\Resources\PaymentTypes;
+
+class PaylaterDirectDebit extends BasePaymentType
+{
+    protected const SUPPORT_DIRECT_PAYMENT_CANCEL = true;
+
+    /** @var string $iban */
+    protected $iban;
+
+    /** @var string $holder */
+    protected $holder;
+
+    public function __construct(string $iban = null, string $holder = null)
+    {
+        $this->iban = $iban;
+        $this->holder = $holder;
+    }
+
+    public function getIban(): ?string
+    {
+        return $this->iban;
+    }
+
+    public function setIban(string $iban): PaylaterDirectDebit
+    {
+        $this->iban = $iban;
+        return $this;
+    }
+
+    public function getHolder(): ?string
+    {
+        return $this->holder;
+    }
+
+    public function setHolder(string $holder): PaylaterDirectDebit
+    {
+        $this->holder = $holder;
+        return $this;
+    }
+}
diff --git a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/PaylaterInstallment.php b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/PaylaterInstallment.php
new file mode 100644
index 0000000..4b83476
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/PaylaterInstallment.php
@@ -0,0 +1,134 @@
+<?php
+
+namespace UnzerSDK\Resources\PaymentTypes;
+
+class PaylaterInstallment extends BasePaymentType
+{
+    protected const SUPPORT_DIRECT_PAYMENT_CANCEL = true;
+
+    /** @var string $inquiryId */
+    protected $inquiryId;
+
+    /** @var int */
+    protected $numberOfRates;
+
+    /** @var string $iban */
+    protected $iban;
+
+    /** @var string $country */
+    protected $country;
+
+    /** @var string $holder */
+    protected $holder;
+
+    /**
+     * @param string|null $inquiryId
+     * @param int|null    $numberOfRates
+     * @param string|null $iban
+     * @param string|null $country
+     * @param string|null $accountHolder
+     */
+    public function __construct($inquiryId = null, $numberOfRates = null, $iban = null, $country = null, $accountHolder = null)
+    {
+        $this->inquiryId = $inquiryId;
+        $this->numberOfRates = $numberOfRates;
+        $this->iban = $iban;
+        $this->country = $country;
+        $this->holder = $accountHolder;
+    }
+
+    /**
+     * @return string|null
+     */
+    public function getInquiryId(): ?string
+    {
+        return $this->inquiryId;
+    }
+
+    /**
+     * @param string|null $inquiryId
+     *
+     * @return PaylaterInstallment
+     */
+    public function setInquiryId(?string $inquiryId): PaylaterInstallment
+    {
+        $this->inquiryId = $inquiryId;
+        return $this;
+    }
+
+    /**
+     * @return int|null
+     */
+    public function getNumberOfRates(): ?int
+    {
+        return $this->numberOfRates;
+    }
+
+    /**
+     * @param int|null $numberOfRates
+     *
+     * @return PaylaterInstallment
+     */
+    public function setNumberOfRates(?int $numberOfRates): PaylaterInstallment
+    {
+        $this->numberOfRates = $numberOfRates;
+        return $this;
+    }
+
+    /**
+     * @return string|null
+     */
+    public function getIban(): ?string
+    {
+        return $this->iban;
+    }
+
+    /**
+     * @param string|null $iban
+     *
+     * @return $this
+     */
+    public function setIban(?string $iban): self
+    {
+        $this->iban = $iban;
+        return $this;
+    }
+
+    /**
+     * @return string|null
+     */
+    public function getCountry(): ?string
+    {
+        return $this->country;
+    }
+
+    /**
+     * @param string|null $country
+     *
+     * @return $this
+     */
+    public function setCountry(?string $country): self
+    {
+        $this->country = $country;
+        return $this;
+    }
+
+    /**
+     * @return string|null
+     */
+    public function getHolder(): ?string
+    {
+        return $this->holder;
+    }
+
+    /**
+     * @param string|null $holder
+     *
+     * @return $this
+     */
+    public function setHolder(?string $holder): self
+    {
+        $this->holder = $holder;
+        return $this;
+    }
+}
diff --git a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/PaylaterInvoice.php b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/PaylaterInvoice.php
new file mode 100644
index 0000000..fa7b1c0
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/PaylaterInvoice.php
@@ -0,0 +1,8 @@
+<?php
+
+namespace UnzerSDK\Resources\PaymentTypes;
+
+class PaylaterInvoice extends BasePaymentType
+{
+    protected const SUPPORT_DIRECT_PAYMENT_CANCEL = true;
+}
diff --git a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Paypage.php b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Paypage.php
index c8dc7c0..bf23c87 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Paypage.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Paypage.php
@@ -1,31 +1,11 @@
 <?php
-/**
- * This is the implementation of the Pay Page which allows for displaying a page containing all
- * payment types of the merchant.
- *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @link  https://docs.unzer.com/
- *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\PaymentTypes
- */
+
 namespace UnzerSDK\Resources\PaymentTypes;
 
 use UnzerSDK\Adapter\HttpAdapterInterface;
+use UnzerSDK\Constants\AdditionalAttributes;
+use UnzerSDK\Constants\ExemptionType;
+use UnzerSDK\Constants\RecurrenceTypes;
 use UnzerSDK\Constants\TransactionTypes;
 use UnzerSDK\Exceptions\UnzerApiException;
 use UnzerSDK\Resources\AbstractUnzerResource;
@@ -39,8 +19,16 @@
 use UnzerSDK\Traits\HasOrderId;
 use RuntimeException;
 use stdClass;
+
 use function in_array;
 
+/**
+ * This is the implementation of the Pay Page which allows for displaying a page containing all
+ * payment types of the merchant.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
 class Paypage extends BasePaymentType
 {
     use CanDirectCharge;
@@ -116,8 +104,6 @@ public function __construct(float $amount, string $currency, string $returnUrl)
         $this->setReturnUrl($returnUrl);
     }
 
-    //<editor-fold desc="Getters/Setters">
-
     /**
      * @return float
      */
@@ -188,7 +174,7 @@ public function getLogoImage(): ?string
      *
      * @return Paypage
      */
-    public function setLogoImage($logoImage): Paypage
+    public function setLogoImage(?string $logoImage): Paypage
     {
         $this->logoImage = $logoImage;
         return $this;
@@ -207,7 +193,7 @@ public function getFullPageImage(): ?string
      *
      * @return Paypage
      */
-    public function setFullPageImage($fullPageImage): Paypage
+    public function setFullPageImage(?string $fullPageImage): Paypage
     {
         $this->fullPageImage = $fullPageImage;
         return $this;
@@ -226,7 +212,7 @@ public function getShopName(): ?string
      *
      * @return Paypage
      */
-    public function setShopName($shopName): Paypage
+    public function setShopName(?string $shopName): Paypage
     {
         $this->shopName = $shopName;
         return $this;
@@ -245,7 +231,7 @@ public function getShopDescription(): ?string
      *
      * @return Paypage
      */
-    public function setShopDescription($shopDescription): Paypage
+    public function setShopDescription(?string $shopDescription): Paypage
     {
         $this->shopDescription = $shopDescription;
         return $this;
@@ -264,7 +250,7 @@ public function getTagline(): ?string
      *
      * @return Paypage
      */
-    public function setTagline($tagline): Paypage
+    public function setTagline(?string $tagline): Paypage
     {
         $this->tagline = $tagline;
         return $this;
@@ -283,7 +269,7 @@ public function getTermsAndConditionUrl(): ?string
      *
      * @return Paypage
      */
-    public function setTermsAndConditionUrl($termsAndConditionUrl): Paypage
+    public function setTermsAndConditionUrl(?string $termsAndConditionUrl): Paypage
     {
         $this->termsAndConditionUrl = $termsAndConditionUrl;
         return $this;
@@ -302,7 +288,7 @@ public function getPrivacyPolicyUrl(): ?string
      *
      * @return Paypage
      */
-    public function setPrivacyPolicyUrl($privacyPolicyUrl): Paypage
+    public function setPrivacyPolicyUrl(?string $privacyPolicyUrl): Paypage
     {
         $this->privacyPolicyUrl = $privacyPolicyUrl;
         return $this;
@@ -321,7 +307,7 @@ public function getImprintUrl(): ?string
      *
      * @return Paypage
      */
-    public function setImprintUrl($imprintUrl): Paypage
+    public function setImprintUrl(?string $imprintUrl): Paypage
     {
         $this->imprintUrl = $imprintUrl;
         return $this;
@@ -340,7 +326,7 @@ public function getHelpUrl(): ?string
      *
      * @return Paypage
      */
-    public function setHelpUrl($helpUrl): Paypage
+    public function setHelpUrl(?string $helpUrl): Paypage
     {
         $this->helpUrl = $helpUrl;
         return $this;
@@ -359,7 +345,7 @@ public function getContactUrl(): ?string
      *
      * @return Paypage
      */
-    public function setContactUrl($contactUrl): Paypage
+    public function setContactUrl(?string $contactUrl): Paypage
     {
         $this->contactUrl = $contactUrl;
         return $this;
@@ -380,6 +366,7 @@ public function getAction(): string
      */
     public function setAction(String $action): Paypage
     {
+        $action = strtolower($action);
         if (in_array($action, [TransactionTypes::CHARGE, TransactionTypes::AUTHORIZATION], true)) {
             $this->action = $action;
         }
@@ -533,7 +520,7 @@ public function isCard3ds(): ?bool
      *
      * @return Paypage
      */
-    public function setCard3ds($card3ds): Paypage
+    public function setCard3ds(?bool $card3ds): Paypage
     {
         $this->card3ds = $card3ds;
         return $this;
@@ -552,51 +539,97 @@ public function getCss(): ?array
      *
      * @return Paypage
      */
-    public function setCss($styles): Paypage
+    public function setCss(?array $styles): Paypage
     {
         $this->css = empty($styles) ? null : $styles;
         return $this;
     }
 
     /**
-     * @param float|null $effectiveInterestRate
+     * @return float|null
+     */
+    public function getEffectiveInterestRate(): ?float
+    {
+        return $this->getAdditionalAttribute(AdditionalAttributes::EFFECTIVE_INTEREST_RATE);
+    }
+
+    /**
+     * @param float $effectiveInterestRate
      *
      * @return Paypage
      */
     public function setEffectiveInterestRate(float $effectiveInterestRate): Paypage
     {
-        $this->setAdditionalAttribute('effectiveInterestRate', $effectiveInterestRate);
+        $this->setAdditionalAttribute(AdditionalAttributes::EFFECTIVE_INTEREST_RATE, $effectiveInterestRate);
         return $this;
     }
 
     /**
-     * @return float|null
+     * @return string|null
      */
-    public function getEffectiveInterestRate(): ?float
+    public function getRecurrenceType(): ?string
     {
-        return $this->getAdditionalAttribute('effectiveInterestRate');
+        return $this->getAdditionalAttribute(AdditionalAttributes::RECURRENCE_TYPE);
     }
 
-    //</editor-fold>
+    /**
+     * @param string $recurrenceType
+     *
+     * @see RecurrenceTypes
+     *
+     * @return Paypage
+     */
+    public function setRecurrenceType(string $recurrenceType): Paypage
+    {
+        $this->setAdditionalAttribute(AdditionalAttributes::RECURRENCE_TYPE, $recurrenceType);
+        return $this;
+    }
 
-    //<editor-fold desc="Overridable methods">
+    /**
+     * @return string|null
+     */
+    public function getExemptionType(): ?string
+    {
+        return $this->getAdditionalAttribute(AdditionalAttributes::EXEMPTION_TYPE);
+    }
+
+    /**
+     * @param string $exemptionType
+     *
+     * @see ExemptionType
+     *
+     * @return Paypage
+     */
+    public function setExemptionType(string $exemptionType): Paypage
+    {
+        $this->setAdditionalAttribute(AdditionalAttributes::EXEMPTION_TYPE, $exemptionType);
+        return $this;
+    }
 
     /**
      * {@inheritDoc}
      * Change resource path.
      */
-    protected function getResourcePath($httpMethod = HttpAdapterInterface::REQUEST_GET): string
+    protected function getResourcePath(string $httpMethod = HttpAdapterInterface::REQUEST_GET): string
     {
+        $basePath = 'paypage';
+
+        if ($httpMethod === HttpAdapterInterface::REQUEST_GET) {
+            return $basePath;
+        }
+
         switch ($this->action) {
             case TransactionTypes::AUTHORIZATION:
-                return 'paypage/authorize';
+                $transactionType = TransactionTypes::AUTHORIZATION;
                 break;
             case TransactionTypes::CHARGE:
                 // intended Fall-Through
             default:
-                return 'paypage/charge';
+                $transactionType = TransactionTypes::CHARGE;
                 break;
         }
+
+        return $basePath . '/' . $transactionType;
     }
 
     /**
@@ -606,19 +639,33 @@ protected function getResourcePath($httpMethod = HttpAdapterInterface::REQUEST_G
      * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
-    public function handleResponse(stdClass $response, $method = HttpAdapterInterface::REQUEST_GET): void
+    public function handleResponse(stdClass $response, string $method = HttpAdapterInterface::REQUEST_GET): void
     {
         if (isset($response->impressumUrl)) {
             $response->imprintUrl = $response->impressumUrl;
             unset($response->impressumUrl);
         }
 
-        parent::handleResponse($response, $method);
-
         /** @var Payment $payment */
         $payment = $this->getPayment();
         if (isset($response->resources->paymentId)) {
-            $payment->setId($response->resources->paymentId);
+            $paymentId = $response->resources->paymentId;
+
+            if (null === $payment) {
+                $payment = new Payment($this->getUnzerObject());
+                $payment->setId($paymentId)
+                    ->setPayPage($this);
+                $this->setPayment($payment);
+                $this->fetchPayment();
+            }
+
+            $payment->setId($paymentId);
+        }
+
+        parent::handleResponse($response, $method);
+
+        if (isset($response->additionalAttributes)) {
+            $this->additionalAttributes = (array)$response->additionalAttributes;
         }
 
         if ($method !== HttpAdapterInterface::REQUEST_GET) {
@@ -647,15 +694,13 @@ public function expose()
     public function getLinkedResources(): array
     {
         return [
-            'customer'=> $this->getCustomer(),
+            'customer' => $this->getCustomer(),
             'metadata' => $this->getMetadata(),
             'basket' => $this->getBasket(),
             'payment' => $this->getPayment()
         ];
     }
 
-    //</editor-fold>
-
     /**
      * Updates the referenced payment object if it exists and if this is not the payment object itself.
      * This is called from the crud methods to update the payments state whenever anything happens.
diff --git a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Paypal.php b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Paypal.php
index 1a8c780..17129e1 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Paypal.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Paypal.php
@@ -1,29 +1,10 @@
 <?php
-/**
- * This represents the Paypal payment type.
- *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @link  https://docs.unzer.com/
- *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\PaymentTypes
- */
+
 namespace UnzerSDK\Resources\PaymentTypes;
 
+use RuntimeException;
+use UnzerSDK\Exceptions\UnzerApiException;
+use UnzerSDK\Resources\Recurring;
 use UnzerSDK\Traits\CanRecur;
 use UnzerSDK\Traits\CanAuthorize;
 use UnzerSDK\Traits\CanDirectCharge;
@@ -32,13 +13,13 @@ class Paypal extends BasePaymentType
 {
     use CanAuthorize;
     use CanDirectCharge;
-    use CanRecur;
+    use CanRecur {
+        activateRecurring as traitActivateRecurring;
+    }
 
     /** @var string|null $email */
     protected $email;
 
-    //<editor-fold desc="Getters/Setters">
-
     /**
      * @return string|null
      */
@@ -58,5 +39,19 @@ public function setEmail(string $email): Paypal
         return $this;
     }
 
-    //</editor-fold>
+    /**
+     * Activates recurring payment for Paypal.
+     *
+     * @param string     $returnUrl      The URL to which the customer gets redirected in case of a 3ds transaction
+     * @param null|mixed $recurrenceType Recurrence type used for recurring payment.
+     *
+     * @return Recurring
+     *
+     * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
+     * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
+     */
+    public function activateRecurring($returnUrl, $recurrenceType = null): Recurring
+    {
+        return $this->traitActivateRecurring($returnUrl, $recurrenceType);
+    }
 }
diff --git a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/PostFinanceCard.php b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/PostFinanceCard.php
new file mode 100644
index 0000000..c839a26
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/PostFinanceCard.php
@@ -0,0 +1,10 @@
+<?php
+
+namespace UnzerSDK\Resources\PaymentTypes;
+
+use UnzerSDK\Traits\CanDirectCharge;
+
+class PostFinanceCard extends BasePaymentType
+{
+    use CanDirectCharge;
+}
diff --git a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/PostFinanceEfinance.php b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/PostFinanceEfinance.php
new file mode 100644
index 0000000..646883c
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/PostFinanceEfinance.php
@@ -0,0 +1,10 @@
+<?php
+
+namespace UnzerSDK\Resources\PaymentTypes;
+
+use UnzerSDK\Traits\CanDirectCharge;
+
+class PostFinanceEfinance extends BasePaymentType
+{
+    use CanDirectCharge;
+}
diff --git a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Prepayment.php b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Prepayment.php
index 45d2890..90714d9 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Prepayment.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Prepayment.php
@@ -1,27 +1,5 @@
 <?php
-/**
- * This represents the prepayment payment type.
- *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @link  https://docs.unzer.com/
- *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\PaymentTypes
- */
+
 namespace UnzerSDK\Resources\PaymentTypes;
 
 use UnzerSDK\Traits\CanDirectCharge;
diff --git a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Przelewy24.php b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Przelewy24.php
index a06758d..db9a665 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Przelewy24.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Przelewy24.php
@@ -1,27 +1,5 @@
 <?php
-/**
- * This represents the Przelewy24 payment type.
- *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @link  https://docs.unzer.com/
- *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\PaymentTypes
- */
+
 namespace UnzerSDK\Resources\PaymentTypes;
 
 use UnzerSDK\Traits\CanDirectCharge;
diff --git a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/SepaDirectDebit.php b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/SepaDirectDebit.php
index f3218d6..ba7e51e 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/SepaDirectDebit.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/SepaDirectDebit.php
@@ -2,26 +2,10 @@
 /**
  * This represents the SEPA direct debit payment type.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\PaymentTypes
  */
+
 namespace UnzerSDK\Resources\PaymentTypes;
 
 use UnzerSDK\Traits\CanDirectCharge;
@@ -44,15 +28,13 @@ class SepaDirectDebit extends BasePaymentType
     protected $holder;
 
     /**
-     * @param string $iban
+     * @param string|null $iban
      */
-    public function __construct($iban)
+    public function __construct(?string $iban)
     {
         $this->iban = $iban;
     }
 
-    //<editor-fold desc="Getters/Setters">
-
     /**
      * @return string|null
      */
@@ -62,11 +44,11 @@ public function getIban(): ?string
     }
 
     /**
-     * @param string $iban
+     * @param string|null $iban
      *
      * @return $this
      */
-    public function setIban($iban): self
+    public function setIban(?string $iban): self
     {
         $this->iban = $iban;
         return $this;
@@ -81,11 +63,11 @@ public function getBic(): ?string
     }
 
     /**
-     * @param string $bic
+     * @param string|null $bic
      *
      * @return $this
      */
-    public function setBic($bic): self
+    public function setBic(?string $bic): self
     {
         $this->bic = $bic;
         return $this;
@@ -100,15 +82,13 @@ public function getHolder(): ?string
     }
 
     /**
-     * @param string $holder
+     * @param string|null $holder
      *
      * @return $this
      */
-    public function setHolder($holder): self
+    public function setHolder(?string $holder): self
     {
         $this->holder = $holder;
         return $this;
     }
-
-    //</editor-fold>
 }
diff --git a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/SepaDirectDebitSecured.php b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/SepaDirectDebitSecured.php
index 7c7342d..46fe054 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/SepaDirectDebitSecured.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/SepaDirectDebitSecured.php
@@ -2,32 +2,18 @@
 /**
  * This represents the SEPA direct debit secured payment type.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\PaymentTypes
  */
+
 namespace UnzerSDK\Resources\PaymentTypes;
 
 use UnzerSDK\Traits\CanDirectChargeWithCustomer;
 use UnzerSDK\Traits\CanPayoutWithCustomer;
 use UnzerSDK\Traits\CanRecur;
 
+/** @deprecated please use PaylaterDirectDebit instead.
+ */
 class SepaDirectDebitSecured extends BasePaymentType
 {
     use CanDirectChargeWithCustomer;
@@ -44,15 +30,13 @@ class SepaDirectDebitSecured extends BasePaymentType
     protected $holder;
 
     /**
-     * @param string $iban
+     * @param string|null $iban
      */
-    public function __construct($iban)
+    public function __construct(?string $iban)
     {
         $this->iban = $iban;
     }
 
-    //<editor-fold desc="Getters/Setters">
-
     /**
      * @return string|null
      */
@@ -62,11 +46,11 @@ public function getIban(): ?string
     }
 
     /**
-     * @param string $iban
+     * @param string|null $iban
      *
      * @return $this
      */
-    public function setIban($iban): self
+    public function setIban(?string $iban): self
     {
         $this->iban = $iban;
         return $this;
@@ -81,11 +65,11 @@ public function getBic(): ?string
     }
 
     /**
-     * @param string $bic
+     * @param string|null $bic
      *
      * @return $this
      */
-    public function setBic($bic): self
+    public function setBic(?string $bic): self
     {
         $this->bic = $bic;
         return $this;
@@ -100,15 +84,13 @@ public function getHolder(): ?string
     }
 
     /**
-     * @param string $holder
+     * @param string|null $holder
      *
      * @return $this
      */
-    public function setHolder($holder): self
+    public function setHolder(?string $holder): self
     {
         $this->holder = $holder;
         return $this;
     }
-
-    //</editor-fold>
 }
diff --git a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Sofort.php b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Sofort.php
index 3bf5dc4..5f24082 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Sofort.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Sofort.php
@@ -1,32 +1,12 @@
 <?php
-/**
- * This represents the Sofort payment type.
- *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @link  https://docs.unzer.com/
- *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\PaymentTypes
- */
+
 namespace UnzerSDK\Resources\PaymentTypes;
 
 use UnzerSDK\Traits\CanDirectCharge;
+use UnzerSDK\Traits\HasAccountInformation;
 
 class Sofort extends BasePaymentType
 {
+    use HasAccountInformation;
     use CanDirectCharge;
 }
diff --git a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Wechatpay.php b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Wechatpay.php
index bf9a10b..d34a06d 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Wechatpay.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/PaymentTypes/Wechatpay.php
@@ -1,27 +1,5 @@
 <?php
-/**
- * This represents the Wechatpay payment type.
- *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @link  https://docs.unzer.com/
- *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\PaymentTypes
- */
+
 namespace UnzerSDK\Resources\PaymentTypes;
 
 use UnzerSDK\Traits\CanDirectCharge;
diff --git a/vendor/unzerdev/php-sdk/src/Resources/Recurring.php b/vendor/unzerdev/php-sdk/src/Resources/Recurring.php
index c47916b..942f49a 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/Recurring.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/Recurring.php
@@ -1,29 +1,8 @@
 <?php
-/**
- * This represents the Recurring resource.
- *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @link  https://docs.unzer.com/
- *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Resources
- */
+
 namespace UnzerSDK\Resources;
 
+use UnzerSDK\Adapter\HttpAdapterInterface;
 use UnzerSDK\Traits\HasAdditionalTransactionData;
 use UnzerSDK\Traits\HasCustomerMessage;
 use UnzerSDK\Traits\HasDate;
@@ -31,6 +10,12 @@
 use UnzerSDK\Traits\HasStates;
 use UnzerSDK\Traits\HasUniqueAndShortId;
 
+/**
+ * This represents the Recurring resource.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
 class Recurring extends AbstractUnzerResource
 {
     use HasStates;
@@ -59,8 +44,6 @@ public function __construct(string $paymentType, string $returnUrl)
         $this->paymentTypeId = $paymentType;
     }
 
-    //<editor-fold desc="Getters/Setters">
-
     /**
      * @return string
      */
@@ -112,20 +95,16 @@ public function getRedirectUrl(): ?string
      *
      * @return Recurring
      */
-    protected function setRedirectUrl($redirectUrl): Recurring
+    protected function setRedirectUrl(?string $redirectUrl): Recurring
     {
         $this->redirectUrl = $redirectUrl;
         return $this;
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Overridable Methods">
-
     /**
      * {@inheritDoc}
      */
-    protected function getResourcePath($httpMethod = HttpAdapterInterface::REQUEST_GET): string
+    protected function getResourcePath(string $httpMethod = HttpAdapterInterface::REQUEST_GET): string
     {
         $parts = [
             'types',
@@ -135,6 +114,4 @@ protected function getResourcePath($httpMethod = HttpAdapterInterface::REQUEST_G
 
         return implode('/', $parts);
     }
-
-    //</editor-fold>
 }
diff --git a/vendor/unzerdev/php-sdk/src/Resources/TransactionTypes/AbstractTransactionType.php b/vendor/unzerdev/php-sdk/src/Resources/TransactionTypes/AbstractTransactionType.php
index 4c0614f..1572e8b 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/TransactionTypes/AbstractTransactionType.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/TransactionTypes/AbstractTransactionType.php
@@ -2,36 +2,24 @@
 /**
  * This is the base class for all transaction types.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\TransactionTypes
  */
+
 namespace UnzerSDK\Resources\TransactionTypes;
 
 use UnzerSDK\Adapter\HttpAdapterInterface;
 use UnzerSDK\Exceptions\UnzerApiException;
 use UnzerSDK\Resources\AbstractUnzerResource;
+use UnzerSDK\Resources\EmbeddedResources\CardTransactionData;
+use UnzerSDK\Resources\EmbeddedResources\RiskData;
+use UnzerSDK\Resources\EmbeddedResources\ShippingData;
 use UnzerSDK\Resources\Payment;
 use UnzerSDK\Resources\PaymentTypes\BasePaymentType;
 use UnzerSDK\Traits\HasAdditionalTransactionData;
 use UnzerSDK\Traits\HasCustomerMessage;
 use UnzerSDK\Traits\HasDate;
+use UnzerSDK\Traits\HasInvoiceId;
 use UnzerSDK\Traits\HasOrderId;
 use UnzerSDK\Traits\HasStates;
 use UnzerSDK\Traits\HasTraceId;
@@ -42,6 +30,7 @@
 abstract class AbstractTransactionType extends AbstractUnzerResource
 {
     use HasOrderId;
+    use HasInvoiceId;
     use HasStates;
     use HasUniqueAndShortId;
     use HasTraceId;
@@ -49,15 +38,10 @@ abstract class AbstractTransactionType extends AbstractUnzerResource
     use HasAdditionalTransactionData;
     use HasDate;
 
-    //<editor-fold desc="Properties">
 
     /** @var Payment $payment */
     private $payment;
 
-    //</editor-fold>
-
-    //<editor-fold desc="Getters/Setters">
-
     /**
      * Return the payment property.
      *
@@ -75,7 +59,7 @@ public function getPayment(): ?Payment
      *
      * @return $this
      */
-    public function setPayment($payment): self
+    public function setPayment(Payment $payment): self
     {
         $this->payment = $payment;
         $this->setParentResource($payment);
@@ -83,9 +67,9 @@ public function setPayment($payment): self
     }
 
     /**
-     * Return the Id of the referenced payment object.
+     * Return the ID of the referenced payment object.
      *
-     * @return null|string The Id of the payment object or null if nothing is found.
+     * @return null|string The ID of the payment object or null if nothing is found.
      */
     public function getPaymentId(): ?string
     {
@@ -106,17 +90,13 @@ public function getRedirectUrl(): ?string
         return $this->payment->getRedirectUrl();
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Overridable methods">
-
     /**
      * {@inheritDoc}
      *
      * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
-    public function handleResponse(stdClass $response, $method = HttpAdapterInterface::REQUEST_GET): void
+    public function handleResponse(stdClass $response, string $method = HttpAdapterInterface::REQUEST_GET): void
     {
         parent::handleResponse($response, $method);
 
@@ -130,9 +110,7 @@ public function handleResponse(stdClass $response, $method = HttpAdapterInterfac
             $payment->handleResponse((object)['redirectUrl' => $response->redirectUrl]);
         }
 
-        if (isset($response->additionalTransactionData)) {
-            $this->setAdditionalTransactionData($response->additionalTransactionData);
-        }
+        $this->handleAdditionalTransactionData($response);
 
         if ($method !== HttpAdapterInterface::REQUEST_GET) {
             $this->fetchPayment();
@@ -154,15 +132,13 @@ public function getLinkedResources(): array
         }
 
         return [
-            'customer'=> $payment->getCustomer(),
+            'customer' => $payment->getCustomer(),
             'type' => $paymentType,
             'metadata' => $payment->getMetadata(),
             'basket' => $payment->getBasket()
         ];
     }
 
-    //</editor-fold>
-
     /**
      * Updates the referenced payment object if it exists and if this is not the payment object itself.
      * This is called from the crud methods to update the payments state whenever anything happens.
@@ -177,4 +153,74 @@ public function fetchPayment(): void
             $this->fetchResource($payment);
         }
     }
+
+    /**
+     * Handle additional transaction data from API response.
+     *
+     * @param stdClass $response
+     *
+     * @return void
+     */
+    protected function handleAdditionalTransactionData(stdClass $response): void
+    {
+        $additionalTransactionData = $response->additionalTransactionData ?? null;
+        if ($additionalTransactionData !== null) {
+            $this->setAdditionalTransactionData($additionalTransactionData);
+
+            $this->handleRiskData($additionalTransactionData);
+            $this->handleShipping($additionalTransactionData);
+            $this->handleCardTransactionData($additionalTransactionData);
+        }
+    }
+
+    /**
+     * Handle risk data object contained in additional transaction data from API response.
+     *
+     * @param stdClass $additionalTransactionData
+     *
+     * @return void
+     */
+    protected function handleRiskData(stdClass $additionalTransactionData): void
+    {
+        $riskData = $additionalTransactionData->riskData ?? null;
+        if ($riskData !== null) {
+            $riskDataObject = $this->getRiskData() ?? new RiskData();
+            $riskDataObject->handleResponse($riskData);
+            $this->setRiskData($riskDataObject);
+        }
+    }
+
+    /**
+     * Handle risk data object contained in additional transaction data from API response.
+     *
+     * @param stdClass $additionalTransactionData
+     *
+     * @return void
+     */
+    protected function handleShipping(stdClass $additionalTransactionData): void
+    {
+        $shipping = $additionalTransactionData->shipping ?? null;
+        if ($shipping !== null) {
+            $shippingObject = $this->getShipping() ?? new ShippingData();
+            $shippingObject->handleResponse($shipping);
+            $this->setShipping($shippingObject);
+        }
+    }
+
+    /**
+     * Handle CardTransactionData object contained in additional transaction data from API response.
+     *
+     * @param stdClass $additionalTransactionData
+     *
+     * @return void
+     */
+    protected function handleCardTransactionData(stdClass $additionalTransactionData): void
+    {
+        $card = $additionalTransactionData->card ?? null;
+        if ($card !== null) {
+            $cardTransactionData = $this->getCardTransactionData() ?? new CardTransactionData();
+            $cardTransactionData->handleResponse($card);
+            $this->setCardTransactionData($cardTransactionData);
+        }
+    }
 }
diff --git a/vendor/unzerdev/php-sdk/src/Resources/TransactionTypes/Authorization.php b/vendor/unzerdev/php-sdk/src/Resources/TransactionTypes/Authorization.php
index 8754325..b37ac71 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/TransactionTypes/Authorization.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/TransactionTypes/Authorization.php
@@ -1,42 +1,28 @@
 <?php
-/**
- * This represents the authorization transaction.
- *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @link  https://docs.unzer.com/
- *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\TransactionTypes
- */
+
 namespace UnzerSDK\Resources\TransactionTypes;
 
 use UnzerSDK\Adapter\HttpAdapterInterface;
 use UnzerSDK\Exceptions\UnzerApiException;
 use UnzerSDK\Resources\Payment;
+use UnzerSDK\Traits\HasAccountInformation;
 use UnzerSDK\Traits\HasCancellations;
-use UnzerSDK\Traits\HasInvoiceId;
+use UnzerSDK\Traits\HasDescriptor;
 use UnzerSDK\Traits\HasRecurrenceType;
 use RuntimeException;
 
+/**
+ * This represents the authorization transaction.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
 class Authorization extends AbstractTransactionType
 {
     use HasCancellations;
-    use HasInvoiceId;
     use HasRecurrenceType;
+    use HasAccountInformation;
+    use HasDescriptor;
 
     /** @var float $amount */
     protected $amount = 0.0;
@@ -65,19 +51,17 @@ class Authorization extends AbstractTransactionType
     /**
      * Authorization constructor.
      *
-     * @param float  $amount
-     * @param string $currency
-     * @param string $returnUrl
+     * @param float|null  $amount
+     * @param string|null $currency
+     * @param string|null $returnUrl
      */
-    public function __construct($amount = null, $currency = null, $returnUrl = null)
+    public function __construct(float $amount = null, string $currency = null, string $returnUrl = null)
     {
         $this->setAmount($amount);
         $this->setCurrency($currency);
         $this->setReturnUrl($returnUrl);
     }
 
-    //<editor-fold desc="Setters/Getters">
-
     /**
      * @return float|null
      */
@@ -87,11 +71,11 @@ public function getAmount(): ?float
     }
 
     /**
-     * @param float $amount
+     * @param float|null $amount
      *
      * @return self
      */
-    public function setAmount($amount): self
+    public function setAmount(?float $amount): self
     {
         $this->amount = $amount !== null ? round($amount, 4) : null;
         return $this;
@@ -120,11 +104,11 @@ public function getCurrency(): ?string
     }
 
     /**
-     * @param string $currency
+     * @param string|null $currency
      *
      * @return self
      */
-    public function setCurrency($currency): self
+    public function setCurrency(?string $currency): self
     {
         $this->currency = $currency;
         return $this;
@@ -139,11 +123,11 @@ public function getReturnUrl(): ?string
     }
 
     /**
-     * @param string $returnUrl
+     * @param string|null $returnUrl
      *
      * @return self
      */
-    public function setReturnUrl($returnUrl): self
+    public function setReturnUrl(?string $returnUrl): self
     {
         $this->returnUrl = $returnUrl;
         return $this;
@@ -162,7 +146,7 @@ public function isCard3ds(): ?bool
      *
      * @return Authorization
      */
-    public function setCard3ds($card3ds): Authorization
+    public function setCard3ds(?bool $card3ds): Authorization
     {
         $this->card3ds = $card3ds;
         return $this;
@@ -177,11 +161,11 @@ public function getPaymentReference(): ?string
     }
 
     /**
-     * @param $paymentReference
+     * @param string|null $paymentReference
      *
      * @return Authorization
      */
-    public function setPaymentReference($paymentReference): Authorization
+    public function setPaymentReference(?string $paymentReference): Authorization
     {
         $this->paymentReference = $paymentReference;
         return $this;
@@ -200,14 +184,14 @@ public function getExternalOrderId(): ?string
      *
      * @return Authorization
      */
-    protected function setExternalOrderId($externalOrderId): Authorization
+    protected function setExternalOrderId(?string $externalOrderId): Authorization
     {
         $this->externalOrderId = $externalOrderId;
         return $this;
     }
 
     /**
-     * Returns the reference Id of the insurance provider if applicable.
+     * Returns the reference ID of the insurance provider if applicable.
      *
      * @return string|null
      */
@@ -217,13 +201,13 @@ public function getZgReferenceId(): ?string
     }
 
     /**
-     * Sets the reference Id of the insurance provider.
+     * Sets the reference ID of the insurance provider.
      *
      * @param string|null $zgReferenceId
      *
      * @return Authorization
      */
-    protected function setZgReferenceId($zgReferenceId): Authorization
+    protected function setZgReferenceId(?string $zgReferenceId): Authorization
     {
         $this->zgReferenceId = $zgReferenceId;
         return $this;
@@ -242,37 +226,31 @@ public function getPDFLink(): ?string
      *
      * @return Authorization
      */
-    protected function setPDFLink($PDFLink): Authorization
+    protected function setPDFLink(?string $PDFLink): Authorization
     {
         $this->PDFLink = $PDFLink;
         return $this;
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Overridable Methods">
-
     /**
      * {@inheritDoc}
      */
-    protected function getResourcePath($httpMethod = HttpAdapterInterface::REQUEST_GET): string
+    protected function getResourcePath(string $httpMethod = HttpAdapterInterface::REQUEST_GET): string
     {
         return 'authorize';
     }
 
-    //</editor-fold>
-
     /**
      * Full cancel of this authorization.
      *
-     * @param null $amount
+     * @param float|null $amount
      *
      * @return Cancellation
      *
      * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
-    public function cancel($amount = null): Cancellation
+    public function cancel(float $amount = null): Cancellation
     {
         return $this->getUnzerObject()->cancelAuthorization($this, $amount);
     }
@@ -280,14 +258,14 @@ public function cancel($amount = null): Cancellation
     /**
      * Charge authorization.
      *
-     * @param null $amount
+     * @param float|null $amount
      *
      * @return Charge
      *
      * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
-    public function charge($amount = null): Charge
+    public function charge(float $amount = null): Charge
     {
         $payment = $this->getPayment();
         if (!$payment instanceof Payment) {
diff --git a/vendor/unzerdev/php-sdk/src/Resources/TransactionTypes/Cancellation.php b/vendor/unzerdev/php-sdk/src/Resources/TransactionTypes/Cancellation.php
index b2ccbce..26d92e8 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/TransactionTypes/Cancellation.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/TransactionTypes/Cancellation.php
@@ -1,35 +1,20 @@
 <?php
-/**
- * This represents the cancel transaction.
- *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @link  https://docs.unzer.com/
- *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\TransactionTypes
- */
+
 namespace UnzerSDK\Resources\TransactionTypes;
 
 use UnzerSDK\Adapter\HttpAdapterInterface;
 use UnzerSDK\Constants\CancelReasonCodes;
 use UnzerSDK\Resources\Payment;
 use UnzerSDK\Resources\PaymentTypes\InstallmentSecured;
+
 use function in_array;
 
+/**
+ * This represents the cancel transaction.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
 class Cancellation extends AbstractTransactionType
 {
     /**
@@ -62,15 +47,13 @@ class Cancellation extends AbstractTransactionType
     /**
      * Authorization constructor.
      *
-     * @param float $amount The amount to be cancelled, is transferred as grossAmount in case of Installment Secured.
+     * @param float|null $amount The amount to be cancelled, is transferred as grossAmount in case of Installment Secured.
      */
-    public function __construct($amount = null)
+    public function __construct(float $amount = null)
     {
         $this->setAmount($amount);
     }
 
-    //<editor-fold desc="Getters/Setters">
-
     /**
      * Returns the cancellationAmount (equals grossAmount in case of Installment Secured).
      *
@@ -84,11 +67,11 @@ public function getAmount(): ?float
     /**
      * Sets the cancellationAmount (equals grossAmount in case of Installment Secured).
      *
-     * @param float $amount
+     * @param float|null $amount
      *
      * @return Cancellation
      */
-    public function setAmount($amount): Cancellation
+    public function setAmount(?float $amount): self
     {
         $this->amount = $amount !== null ? round($amount, 4) : null;
         return $this;
@@ -111,7 +94,7 @@ public function getReasonCode(): ?string
      *
      * @return Cancellation
      */
-    public function setReasonCode($reasonCode): Cancellation
+    public function setReasonCode(?string $reasonCode): Cancellation
     {
         if (in_array($reasonCode, array_merge(CancelReasonCodes::REASON_CODE_ARRAY, [null]), true)) {
             $this->reasonCode = $reasonCode;
@@ -132,7 +115,7 @@ public function getPaymentReference(): ?string
      *
      * @return Cancellation
      */
-    public function setPaymentReference($paymentReference): Cancellation
+    public function setPaymentReference(?string $paymentReference): Cancellation
     {
         $this->paymentReference = $paymentReference;
         return $this;
@@ -157,7 +140,7 @@ public function getAmountNet(): ?float
      *
      * @return Cancellation The resulting cancellation object.
      */
-    public function setAmountNet($amountNet): Cancellation
+    public function setAmountNet(?float $amountNet): Cancellation
     {
         $this->amountNet = $amountNet;
         return $this;
@@ -182,16 +165,12 @@ public function getAmountVat(): ?float
      *
      * @return Cancellation
      */
-    public function setAmountVat($amountVat): Cancellation
+    public function setAmountVat(?float $amountVat): Cancellation
     {
         $this->amountVat = $amountVat;
         return $this;
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Overridable Methods">
-
     /**
      * {@inheritDoc}
      */
@@ -210,10 +189,8 @@ public function expose()
     /**
      * {@inheritDoc}
      */
-    protected function getResourcePath($httpMethod = HttpAdapterInterface::REQUEST_GET): string
+    protected function getResourcePath(string $httpMethod = HttpAdapterInterface::REQUEST_GET): string
     {
         return 'cancels';
     }
-
-    //</editor-fold>
 }
diff --git a/vendor/unzerdev/php-sdk/src/Resources/TransactionTypes/Charge.php b/vendor/unzerdev/php-sdk/src/Resources/TransactionTypes/Charge.php
index 7a26acc..d7f1685 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/TransactionTypes/Charge.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/TransactionTypes/Charge.php
@@ -1,41 +1,29 @@
 <?php
-/**
- * This represents the charge transaction.
- *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @link  https://docs.unzer.com/
- *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\TransactionTypes
- */
+
 namespace UnzerSDK\Resources\TransactionTypes;
 
 use UnzerSDK\Adapter\HttpAdapterInterface;
 use UnzerSDK\Exceptions\UnzerApiException;
+use UnzerSDK\Traits\HasAccountInformation;
 use UnzerSDK\Traits\HasCancellations;
-use UnzerSDK\Traits\HasInvoiceId;
+use UnzerSDK\Traits\HasChargebacks;
+use UnzerSDK\Traits\HasDescriptor;
 use UnzerSDK\Traits\HasRecurrenceType;
 use RuntimeException;
 
+/**
+ * This represents the charge transaction.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
 class Charge extends AbstractTransactionType
 {
     use HasCancellations;
-    use HasInvoiceId;
     use HasRecurrenceType;
+    use HasAccountInformation;
+    use HasDescriptor;
+    use HasChargebacks;
 
     /** @var float $amount */
     protected $amount;
@@ -46,18 +34,6 @@ class Charge extends AbstractTransactionType
     /** @var string $returnUrl */
     protected $returnUrl;
 
-    /** @var string $iban */
-    private $iban;
-
-    /** @var string bic */
-    private $bic;
-
-    /** @var string $holder */
-    private $holder;
-
-    /** @var string $descriptor */
-    private $descriptor;
-
     /** @var string $paymentReference */
     protected $paymentReference;
 
@@ -67,19 +43,17 @@ class Charge extends AbstractTransactionType
     /**
      * Authorization constructor.
      *
-     * @param float  $amount
-     * @param string $currency
-     * @param string $returnUrl
+     * @param float|null  $amount
+     * @param string|null $currency
+     * @param string|null $returnUrl
      */
-    public function __construct($amount = null, $currency = null, $returnUrl = null)
+    public function __construct(float $amount = null, string $currency = null, string $returnUrl = null)
     {
         $this->setAmount($amount);
         $this->setCurrency($currency);
         $this->setReturnUrl($returnUrl);
     }
 
-    //<editor-fold desc="Setters/Getters">
-
     /**
      * @return float|null
      */
@@ -89,11 +63,11 @@ public function getAmount(): ?float
     }
 
     /**
-     * @param float $amount
+     * @param float|null $amount
      *
      * @return self
      */
-    public function setAmount($amount): self
+    public function setAmount(?float $amount): self
     {
         $this->amount = $amount !== null ? round($amount, 4) : null;
         return $this;
@@ -107,7 +81,9 @@ public function getCancelledAmount(): ?float
         $amount = 0.0;
         foreach ($this->getCancellations() as $cancellation) {
             /** @var Cancellation $cancellation */
-            $amount += $cancellation->getAmount();
+            if ($cancellation->isSuccess()) {
+                $amount += $cancellation->getAmount();
+            }
         }
 
         return $amount;
@@ -118,7 +94,7 @@ public function getCancelledAmount(): ?float
      */
     public function getTotalAmount(): ?float
     {
-        return $this->getAmount() - $this->getCancelledAmount();
+        return round($this->getAmount() - $this->getCancelledAmount(), 4);
     }
 
     /**
@@ -130,11 +106,11 @@ public function getCurrency(): ?string
     }
 
     /**
-     * @param string $currency
+     * @param string|null $currency
      *
      * @return self
      */
-    public function setCurrency($currency): self
+    public function setCurrency(?string $currency): self
     {
         $this->currency = $currency;
         return $this;
@@ -149,104 +125,16 @@ public function getReturnUrl(): ?string
     }
 
     /**
-     * @param string $returnUrl
+     * @param string|null $returnUrl
      *
      * @return self
      */
-    public function setReturnUrl($returnUrl): self
+    public function setReturnUrl(?string $returnUrl): self
     {
         $this->returnUrl = $returnUrl;
         return $this;
     }
 
-    /**
-     * Returns the IBAN of the account the customer needs to transfer the amount to.
-     * E. g. invoice, prepayment, etc.
-     *
-     * @return string|null
-     */
-    public function getIban(): ?string
-    {
-        return $this->iban;
-    }
-
-    /**
-     * @param string $iban
-     *
-     * @return self
-     */
-    protected function setIban(string $iban): self
-    {
-        $this->iban = $iban;
-        return $this;
-    }
-
-    /**
-     * Returns the BIC of the account the customer needs to transfer the amount to.
-     * E. g. invoice, prepayment, etc.
-     *
-     * @return string|null
-     */
-    public function getBic(): ?string
-    {
-        return $this->bic;
-    }
-
-    /**
-     * @param string $bic
-     *
-     * @return self
-     */
-    protected function setBic(string $bic): self
-    {
-        $this->bic = $bic;
-        return $this;
-    }
-
-    /**
-     * Returns the holder of the account the customer needs to transfer the amount to.
-     * E. g. invoice, prepayment, etc.
-     *
-     * @return string|null
-     */
-    public function getHolder(): ?string
-    {
-        return $this->holder;
-    }
-
-    /**
-     * @param string $holder
-     *
-     * @return self
-     */
-    protected function setHolder(string $holder): self
-    {
-        $this->holder = $holder;
-        return $this;
-    }
-
-    /**
-     * Returns the Descriptor the customer needs to use when transferring the amount.
-     * E. g. invoice, prepayment, etc.
-     *
-     * @return string|null
-     */
-    public function getDescriptor(): ?string
-    {
-        return $this->descriptor;
-    }
-
-    /**
-     * @param string $descriptor
-     *
-     * @return self
-     */
-    protected function setDescriptor(string $descriptor): self
-    {
-        $this->descriptor = $descriptor;
-        return $this;
-    }
-
     /**
      * @return string|null
      */
@@ -260,7 +148,7 @@ public function getPaymentReference(): ?string
      *
      * @return Charge
      */
-    public function setPaymentReference($referenceText): Charge
+    public function setPaymentReference(?string $referenceText): Charge
     {
         $this->paymentReference = $referenceText;
         return $this;
@@ -279,26 +167,20 @@ public function isCard3ds(): ?bool
      *
      * @return Charge
      */
-    public function setCard3ds($card3ds): Charge
+    public function setCard3ds(?bool $card3ds): Charge
     {
         $this->card3ds = $card3ds;
         return $this;
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Overridable Methods">
-
     /**
      * {@inheritDoc}
      */
-    protected function getResourcePath($httpMethod = HttpAdapterInterface::REQUEST_GET): string
+    protected function getResourcePath(string $httpMethod = HttpAdapterInterface::REQUEST_GET): string
     {
         return 'charges';
     }
 
-    //</editor-fold>
-
     /**
      * Full cancel of this authorization.
      * Returns the last cancellation object if charge is already canceled.
@@ -317,11 +199,11 @@ protected function getResourcePath($httpMethod = HttpAdapterInterface::REQUEST_G
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
     public function cancel(
-        $amount = null,
+        float  $amount = null,
         string $reasonCode = null,
         string $paymentReference = null,
-        float $amountNet = null,
-        float $amountVat = null
+        float  $amountNet = null,
+        float  $amountVat = null
     ): Cancellation {
         return $this->getUnzerObject()->cancelCharge(
             $this,
diff --git a/vendor/unzerdev/php-sdk/src/Resources/TransactionTypes/Chargeback.php b/vendor/unzerdev/php-sdk/src/Resources/TransactionTypes/Chargeback.php
new file mode 100644
index 0000000..7c0c592
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/src/Resources/TransactionTypes/Chargeback.php
@@ -0,0 +1,95 @@
+<?php
+
+namespace UnzerSDK\Resources\TransactionTypes;
+
+use UnzerSDK\Adapter\HttpAdapterInterface;
+
+/**
+ * This represents the chargeback transaction.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+class Chargeback extends AbstractTransactionType
+{
+    /** @var float $amount */
+    protected $amount;
+
+    /** @var string $currency */
+    protected $currency;
+
+    /** @var string $paymentReference */
+    protected $paymentReference;
+
+    /**
+     * @param float|null $amount The amount to be cancelled, is transferred as grossAmount in case of Installment Secured.
+     */
+    public function __construct(float $amount = null)
+    {
+        $this->setAmount($amount);
+    }
+
+    /**
+     * @return float|null
+     */
+    public function getAmount(): ?float
+    {
+        return $this->amount;
+    }
+
+    /**
+     * Sets the cancellationAmount (equals grossAmount in case of Installment Secured).
+     *
+     * @param float|null $amount
+     *
+     * @return Cancellation
+     */
+    public function setAmount(?float $amount): self
+    {
+        $this->amount = $amount !== null ? round($amount, 4) : null;
+        return $this;
+    }
+
+    /**
+     * @return string
+     */
+    public function getCurrency(): string
+    {
+        return $this->currency;
+    }
+
+    /**
+     * @param string $currency
+     */
+    public function setCurrency(string $currency): void
+    {
+        $this->currency = $currency;
+    }
+
+    /**
+     * @return string|null
+     */
+    public function getPaymentReference(): ?string
+    {
+        return $this->paymentReference;
+    }
+
+    /**
+     * @param string|null $paymentReference
+     *
+     * @return Cancellation
+     */
+    public function setPaymentReference(?string $paymentReference): Chargeback
+    {
+        $this->paymentReference = $paymentReference;
+        return $this;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    protected function getResourcePath(string $httpMethod = HttpAdapterInterface::REQUEST_GET): string
+    {
+        return 'chargebacks';
+    }
+}
diff --git a/vendor/unzerdev/php-sdk/src/Resources/TransactionTypes/Payout.php b/vendor/unzerdev/php-sdk/src/Resources/TransactionTypes/Payout.php
index 183392f..39f6a93 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/TransactionTypes/Payout.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/TransactionTypes/Payout.php
@@ -1,36 +1,17 @@
 <?php
+
+namespace UnzerSDK\Resources\TransactionTypes;
+
+use UnzerSDK\Adapter\HttpAdapterInterface;
+
 /**
  * This represents the payout transaction.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\TransactionTypes
  */
-namespace UnzerSDK\Resources\TransactionTypes;
-
-use UnzerSDK\Adapter\HttpAdapterInterface;
-use UnzerSDK\Traits\HasInvoiceId;
-
 class Payout extends AbstractTransactionType
 {
-    use HasInvoiceId;
-
     /** @var float|null $amount */
     protected $amount;
 
@@ -46,19 +27,17 @@ class Payout extends AbstractTransactionType
     /**
      * Payout constructor.
      *
-     * @param float  $amount
-     * @param string $currency
-     * @param null   $returnUrl
+     * @param float|null  $amount
+     * @param string|null $currency
+     * @param null        $returnUrl
      */
-    public function __construct($amount = null, $currency = null, $returnUrl = null)
+    public function __construct(float $amount = null, string $currency = null, $returnUrl = null)
     {
         $this->setAmount($amount);
         $this->setCurrency($currency);
         $this->setReturnUrl($returnUrl);
     }
 
-    //<editor-fold desc="Setters/Getters">
-
     /**
      * @return float|null
      */
@@ -68,11 +47,11 @@ public function getAmount(): ?float
     }
 
     /**
-     * @param float $amount
+     * @param float|null $amount
      *
      * @return self
      */
-    public function setAmount($amount): self
+    public function setAmount(?float $amount): self
     {
         $this->amount = $amount !== null ? round($amount, 4) : null;
         return $this;
@@ -87,11 +66,11 @@ public function getCurrency(): ?string
     }
 
     /**
-     * @param string $currency
+     * @param string|null $currency
      *
      * @return self
      */
-    public function setCurrency($currency): self
+    public function setCurrency(?string $currency): self
     {
         $this->currency = $currency;
         return $this;
@@ -110,7 +89,7 @@ public function getReturnUrl(): ?string
      *
      * @return Payout
      */
-    public function setReturnUrl($returnUrl): Payout
+    public function setReturnUrl(?string $returnUrl): Payout
     {
         $this->returnUrl = $returnUrl;
         return $this;
@@ -135,17 +114,11 @@ public function setPaymentReference($referenceText): Payout
         return $this;
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Overridable Methods">
-
     /**
      * {@inheritDoc}
      */
-    protected function getResourcePath($httpMethod = HttpAdapterInterface::REQUEST_GET): string
+    protected function getResourcePath(string $httpMethod = HttpAdapterInterface::REQUEST_GET): string
     {
         return 'payouts';
     }
-
-    //</editor-fold>
 }
diff --git a/vendor/unzerdev/php-sdk/src/Resources/TransactionTypes/Shipment.php b/vendor/unzerdev/php-sdk/src/Resources/TransactionTypes/Shipment.php
index ee0bf68..55dfbc7 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/TransactionTypes/Shipment.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/TransactionTypes/Shipment.php
@@ -1,40 +1,20 @@
 <?php
+
+namespace UnzerSDK\Resources\TransactionTypes;
+
+use UnzerSDK\Adapter\HttpAdapterInterface;
+
 /**
  * This represents the shipment transaction.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\TransactionTypes
  */
-namespace UnzerSDK\Resources\TransactionTypes;
-
-use UnzerSDK\Traits\HasInvoiceId;
-
 class Shipment extends AbstractTransactionType
 {
-    use HasInvoiceId;
-
     /** @var float|null $amount */
     protected $amount;
 
-    //<editor-fold desc="Getters/Setters">
-
     /**
      * @return float|null
      */
@@ -44,27 +24,21 @@ public function getAmount(): ?float
     }
 
     /**
-     * @param float $amount
+     * @param float|null $amount
      *
      * @return Shipment
      */
-    public function setAmount($amount): Shipment
+    public function setAmount(?float $amount): self
     {
         $this->amount = $amount !== null ? round($amount, 4) : null;
         return $this;
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Overridable methods">
-
     /**
      * {@inheritDoc}
      */
-    protected function getResourcePath($httpMethod = HttpAdapterInterface::REQUEST_GET): string
+    protected function getResourcePath(string $httpMethod = HttpAdapterInterface::REQUEST_GET): string
     {
         return 'shipments';
     }
-
-    //</editor-fold>
 }
diff --git a/vendor/unzerdev/php-sdk/src/Resources/Webhook.php b/vendor/unzerdev/php-sdk/src/Resources/Webhook.php
index 5545780..df2f55c 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/Webhook.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/Webhook.php
@@ -1,29 +1,15 @@
 <?php
+
+namespace UnzerSDK\Resources;
+
+use UnzerSDK\Adapter\HttpAdapterInterface;
+
 /**
  * This represents the Webhook resource.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Resources
  */
-namespace UnzerSDK\Resources;
-
 class Webhook extends AbstractUnzerResource
 {
     /** @var string $url */
@@ -44,8 +30,6 @@ public function __construct(string $url = '', string $event = '')
         $this->event = $event;
     }
 
-    //<editor-fold desc="Getters/Setters">
-
     /**
      * @return string|null
      */
@@ -84,17 +68,11 @@ public function setEvent(string $event): Webhook
         return $this;
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Resource IF">
-
     /**
      * {@inheritDoc}
      */
-    protected function getResourcePath($httpMethod = HttpAdapterInterface::REQUEST_GET): string
+    protected function getResourcePath(string $httpMethod = HttpAdapterInterface::REQUEST_GET): string
     {
         return 'webhooks';
     }
-
-    //</editor-fold>
 }
diff --git a/vendor/unzerdev/php-sdk/src/Resources/Webhooks.php b/vendor/unzerdev/php-sdk/src/Resources/Webhooks.php
index b169b03..2cb1e82 100644
--- a/vendor/unzerdev/php-sdk/src/Resources/Webhooks.php
+++ b/vendor/unzerdev/php-sdk/src/Resources/Webhooks.php
@@ -1,37 +1,22 @@
 <?php
-/**
- * This class represents a group of Webhooks.
- * It is a pseudo resource used to manage bulk operations on webhooks.
- * It will never receive an id from the API.
- *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @link  https://docs.unzer.com/
- *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Resources
- */
+
 namespace UnzerSDK\Resources;
 
 use UnzerSDK\Adapter\HttpAdapterInterface;
 use UnzerSDK\Constants\WebhookEvents;
 use RuntimeException;
 use stdClass;
+
 use function in_array;
 
+/**
+ * This class represents a group of Webhooks.
+ * It is a pseudo resource used to manage bulk operations on webhooks.
+ * It will never receive an id from the API.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
 class Webhooks extends AbstractUnzerResource
 {
     /** @var string $url */
@@ -55,8 +40,6 @@ public function __construct(string $url = '', array $eventList = [])
         $this->eventList = $eventList;
     }
 
-    //<editor-fold desc="Getters/Setters">
-
     /**
      * @return string
      */
@@ -105,15 +88,13 @@ public function getWebhookList(): array
         return $this->webhooks;
     }
 
-    //</editor-fold>
-
     /**
      * @param stdClass $response
      * @param string   $method
      *
      * @throws RuntimeException
      */
-    public function handleResponse(stdClass $response, $method = HttpAdapterInterface::REQUEST_GET): void
+    public function handleResponse(stdClass $response, string $method = HttpAdapterInterface::REQUEST_GET): void
     {
         parent::handleResponse($response, $method);
 
diff --git a/vendor/unzerdev/php-sdk/src/Services/CancelService.php b/vendor/unzerdev/php-sdk/src/Services/CancelService.php
index df1da55..354cb90 100644
--- a/vendor/unzerdev/php-sdk/src/Services/CancelService.php
+++ b/vendor/unzerdev/php-sdk/src/Services/CancelService.php
@@ -1,42 +1,27 @@
 <?php
-/**
- * This service provides for functionalities concerning cancel transactions.
- *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @link  https://docs.unzer.com/
- *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Services
- */
+
 namespace UnzerSDK\Services;
 
+use RuntimeException;
 use UnzerSDK\Constants\ApiResponseCodes;
 use UnzerSDK\Constants\CancelReasonCodes;
 use UnzerSDK\Exceptions\UnzerApiException;
-use UnzerSDK\Unzer;
 use UnzerSDK\Interfaces\CancelServiceInterface;
 use UnzerSDK\Resources\Payment;
 use UnzerSDK\Resources\TransactionTypes\Authorization;
 use UnzerSDK\Resources\TransactionTypes\Cancellation;
 use UnzerSDK\Resources\TransactionTypes\Charge;
-use RuntimeException;
+use UnzerSDK\Unzer;
+
 use function in_array;
 use function is_string;
 
+/**
+ * This service provides for functionalities concerning cancel transactions.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
 class CancelService implements CancelServiceInterface
 {
     /** @var Unzer */
@@ -52,8 +37,6 @@ public function __construct(Unzer $unzer)
         $this->unzer = $unzer;
     }
 
-    //<editor-fold desc="Getters/Setters"
-
     /**
      * @return Unzer
      */
@@ -81,10 +64,6 @@ public function getResourceService(): ResourceService
         return $this->getUnzer()->getResourceService();
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Authorization Cancel/Reversal transaction">
-
     /**
      * {@inheritDoc}
      */
@@ -107,10 +86,6 @@ public function cancelAuthorizationByPayment($payment, float $amount = null): Ca
         return $this->cancelAuthorization($authorization, $amount);
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Charge Cancel/Refund transaction">
-
     /**
      * {@inheritDoc}
      */
@@ -151,17 +126,13 @@ public function cancelCharge(
         return $cancellation;
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Payment">
-
     /**
      * {@inheritDoc}
      */
     public function cancelPayment(
         $payment,
         float $amount = null,
-        $reasonCode = CancelReasonCodes::REASON_CODE_CANCEL,
+        ?string $reasonCode = CancelReasonCodes::REASON_CODE_CANCEL,
         string $referenceText = null,
         float $amountNet = null,
         float $amountVat = null
@@ -170,6 +141,11 @@ public function cancelPayment(
         if (is_string($payment)) {
             $paymentObject = $this->getResourceService()->fetchPayment($payment);
         }
+        $paymentType = $paymentObject->getPaymentType();
+        if ($paymentType !== null && $paymentType->supportsDirectPaymentCancel()) {
+            $message = 'The used payment type is not supported by this cancel method. Please use Unzer::cancelAuthorizedPayment() or Unzer::cancelChargedPayment() instead.';
+            throw new RuntimeException($message);
+        }
 
         if (!$paymentObject instanceof Payment) {
             throw new RuntimeException('Invalid payment object.');
@@ -240,11 +216,11 @@ public function cancelPaymentAuthorization($payment, float $amount = null): ?Can
 
     /**
      * @param Payment $payment
-     * @param string  $reasonCode
-     * @param string  $referenceText
-     * @param float   $amountNet
-     * @param float   $amountVat
-     * @param float   $remainingToCancel
+     * @param ?string $reasonCode
+     * @param ?string $referenceText
+     * @param ?float  $amountNet
+     * @param ?float  $amountVat
+     * @param ?float  $remainingToCancel
      *
      * @return array
      *
@@ -253,22 +229,38 @@ public function cancelPaymentAuthorization($payment, float $amount = null): ?Can
      */
     public function cancelPaymentCharges(
         Payment $payment,
-        $reasonCode,
-        $referenceText,
-        $amountNet,
-        $amountVat,
-        float $remainingToCancel = null
+        ?string  $reasonCode,
+        ?string  $referenceText,
+        ?float   $amountNet,
+        ?float   $amountVat,
+        ?float   $remainingToCancel = null
     ): array {
         $cancellations = [];
         $cancelWholePayment = $remainingToCancel === null;
 
-        /** @var Charge $charge */
-        foreach ($payment->getCharges() as $charge) {
+        /** @var array $charge */
+        $charges = $payment->getCharges();
+        $receiptAmount = $this->calculateReceiptAmount($charges);
+        foreach ($charges as $index => $charge) {
             $cancelAmount = null;
             if (!$cancelWholePayment && $remainingToCancel <= $charge->getTotalAmount()) {
                 $cancelAmount = $remainingToCancel;
             }
 
+            /** @var Charge $charge */
+            // Calculate the maximum cancel amount for initial transaction.
+            if ($index === 0 && $charge->isPending()) {
+                $maxReversalAmount = $this->calculateMaxReversalAmount($charge, $receiptAmount);
+                /* If canceled and charged amounts are equal or higher than the initial charge, skip it,
+                because there won't be anything left to cancel. */
+                if ($maxReversalAmount <= 0) {
+                    continue;
+                }
+                if ($maxReversalAmount < $cancelAmount) {
+                    $cancelAmount = $maxReversalAmount;
+                }
+            }
+
             try {
                 $cancellation = $charge->cancel($cancelAmount, $reasonCode, $referenceText, $amountNet, $amountVat);
             } catch (UnzerApiException $e) {
@@ -290,14 +282,51 @@ public function cancelPaymentCharges(
         return $cancellations;
     }
 
-    //</editor-fold>
+    /**
+     * {@inheritDoc}
+     */
+    public function cancelAuthorizedPayment($payment, ?Cancellation $cancellation = null): Cancellation
+    {
+        if ($cancellation === null) {
+            $cancellation = new Cancellation();
+        }
+
+        $paymentResource = $this->getResourceService()->getPaymentResource($payment);
+
+        // Authorization is required to build the proper resource path for the cancellation.
+        $authorization = (new Authorization())->setParentResource($paymentResource);
+        $cancellation->setPayment($paymentResource)
+            ->setParentResource($authorization);
+
+        /** @var Cancellation $cancellation */
+        $cancellation = $this->getResourceService()->createResource($cancellation);
+        return $cancellation;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function cancelChargedPayment($payment, ?Cancellation $cancellation = null): Cancellation
+    {
+        if ($cancellation === null) {
+            $cancellation = new Cancellation();
+        }
+        $paymentResource = $this->getResourceService()->getPaymentResource($payment);
+
+        // Charge is required to build the proper resource path for the cancellation.
+        $charge = (new Charge())->setParentResource($paymentResource);
+        $cancellation->setPayment($paymentResource)
+            ->setParentResource($charge);
 
-    //<editor-fold desc="Helpers">
+        /** @var Cancellation $cancellation */
+        $cancellation = $this->getResourceService()->createResource($cancellation);
+        return $cancellation;
+    }
 
     /**
      * Throws exception if the passed exception is not to be ignored while cancelling charges or authorization.
      *
-     * @param $exception
+     * @param UnzerApiException $exception
      *
      * @throws UnzerApiException
      */
@@ -324,14 +353,36 @@ private function isExceptionAllowed(UnzerApiException $exception): void
      *
      * @return float|null
      */
-    private function updateCancelAmount($remainingToCancel, float $amount): ?float
+    private function updateCancelAmount(?float $remainingToCancel, float $amount): ?float
     {
         $cancelWholePayment = $remainingToCancel === null;
         if (!$cancelWholePayment) {
-            $remainingToCancel -= $amount;
+            $remainingToCancel = round($remainingToCancel - $amount, 4);
         }
         return $remainingToCancel;
     }
 
-    //</editor-fold>
+    protected function calculateReceiptAmount(array $charges): float
+    {
+        $receiptAmount = 0;
+        // Sum up Amounts of all successful charges from the list.
+        foreach ($charges as $charge) {
+            if ($charge->isSuccess()) {
+                $receiptAmount += $charge->getAmount();
+            }
+        }
+        return $receiptAmount;
+    }
+
+    /** Calculate max reversal amount for a charge and round it to 4th digit.
+     *
+     * @param Charge $charge
+     * @param float  $receiptAmount
+     *
+     * @return float
+     */
+    private function calculateMaxReversalAmount(Charge $charge, float $receiptAmount): float
+    {
+        return round($charge->getAmount() - $receiptAmount - $charge->getCancelledAmount(), 4);
+    }
 }
diff --git a/vendor/unzerdev/php-sdk/src/Services/EnvironmentService.php b/vendor/unzerdev/php-sdk/src/Services/EnvironmentService.php
index ac1ea74..68a048a 100644
--- a/vendor/unzerdev/php-sdk/src/Services/EnvironmentService.php
+++ b/vendor/unzerdev/php-sdk/src/Services/EnvironmentService.php
@@ -1,49 +1,22 @@
 <?php
+
+namespace UnzerSDK\Services;
+
+use function in_array;
+use function is_bool;
+
 /**
  * This service provides for functionalities concerning the PAPI environment.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Services
  */
-namespace UnzerSDK\Services;
-
-use function in_array;
-use function is_bool;
-
 class EnvironmentService
 {
     private const ENV_VAR_NAME_ENVIRONMENT = 'UNZER_PAPI_ENV';
     public const ENV_VAR_VALUE_STAGING_ENVIRONMENT = 'STG';
     public const ENV_VAR_VALUE_DEVELOPMENT_ENVIRONMENT = 'DEV';
     public const ENV_VAR_VALUE_PROD_ENVIRONMENT = 'PROD';
-
-    public const ENV_VAR_NAME_VERBOSE_TEST_LOGGING = 'UNZER_PAPI_VERBOSE_TEST_LOGGING';
-
-    public const ENV_VAR_TEST_PRIVATE_KEY = 'UNZER_PAPI_TEST_PRIVATE_KEY';
-    public const ENV_VAR_TEST_PUBLIC_KEY = 'UNZER_PAPI_TEST_PUBLIC_KEY';
-    public const ENV_VAR_TEST_PRIVATE_KEY_NON_3DS = 'UNZER_PAPI_TEST_PRIVATE_KEY_NON_3DS';
-    public const ENV_VAR_TEST_PUBLIC_KEY_NON_3DS = 'UNZER_PAPI_TEST_PUBLIC_KEY_NON_3DS';
-
-    public const ENV_VAR_TEST_APPLE_MERCHANT_ID_FOLDER = 'UNZER_APPLE_MERCHANT_ID_PATH';
-    public const ENV_VAR_TEST_APPLE_CA_CERTIFICATE = 'UNZER_APPLE_CA_CERTIFICATE_PATH';
-
     private const ENV_VAR_NAME_TIMEOUT = 'UNZER_PAPI_TIMEOUT';
     private const DEFAULT_TIMEOUT = 60;
 
@@ -76,16 +49,6 @@ public function getPapiEnvironment(): string
         return stripslashes($_SERVER[self::ENV_VAR_NAME_ENVIRONMENT] ?? self::ENV_VAR_VALUE_PROD_ENVIRONMENT);
     }
 
-    /**
-     * Returns false if the logging in tests is deactivated by environment variable.
-     *
-     * @return bool
-     */
-    public static function isTestLoggingActive(): bool
-    {
-        return self::getBoolEnvValue(self::ENV_VAR_NAME_VERBOSE_TEST_LOGGING);
-    }
-
     /**
      * Returns the timeout set via environment variable or the default timeout.
      * ATTENTION: Setting this value to 0 will disable the limit.
@@ -108,56 +71,4 @@ public static function isCurlVerbose(): bool
         $curlVerbose = strtolower(stripslashes($_SERVER[self::ENV_VAR_NAME_CURL_VERBOSE] ?? 'false'));
         return in_array($curlVerbose, ['true', '1'], true);
     }
-
-    /**
-     * Returns the private key string set via environment variable.
-     * Returns the non 3ds version of the key if the non3ds flag is set.
-     * Returns an empty string if the environment variable is not set.
-     *
-     * @param bool $non3ds
-     *
-     * @return string
-     */
-    public static function getTestPrivateKey($non3ds = false): string
-    {
-        $variableName = $non3ds ? self::ENV_VAR_TEST_PRIVATE_KEY_NON_3DS : self::ENV_VAR_TEST_PRIVATE_KEY;
-        $key = stripslashes($_SERVER[$variableName] ?? '');
-        return empty($key) ? '' : $key;
-    }
-
-    /**
-     * Returns the public key string set via environment variable.
-     * Returns the non 3ds version of the key if the non3ds flag is set.
-     * Returns an empty string if the environment variable is not set.
-     *
-     * @param bool $non3ds
-     *
-     * @return string
-     */
-    public static function getTestPublicKey($non3ds = false): string
-    {
-        $variableName = $non3ds ? self::ENV_VAR_TEST_PUBLIC_KEY_NON_3DS : self::ENV_VAR_TEST_PUBLIC_KEY;
-        $key = stripslashes($_SERVER[$variableName] ?? '');
-        return empty($key) ? '' : $key;
-    }
-
-    /**
-     * Returns the path to apple merchant ID folder set via environment variable.
-     *
-     * @return string
-     */
-    public static function getAppleMerchantIdPath(): string
-    {
-        return stripslashes($_SERVER[self::ENV_VAR_TEST_APPLE_MERCHANT_ID_FOLDER] ?? '');
-    }
-
-    /**
-     * Returns the CA certificate path set via environment variable.
-     *
-     * @return string
-     */
-    public static function getAppleCaCertificatePath(): string
-    {
-        return stripslashes($_SERVER[self::ENV_VAR_TEST_APPLE_CA_CERTIFICATE] ?? '');
-    }
 }
diff --git a/vendor/unzerdev/php-sdk/src/Services/HttpService.php b/vendor/unzerdev/php-sdk/src/Services/HttpService.php
index 4c27504..f6f87ea 100644
--- a/vendor/unzerdev/php-sdk/src/Services/HttpService.php
+++ b/vendor/unzerdev/php-sdk/src/Services/HttpService.php
@@ -1,27 +1,5 @@
 <?php
-/**
- * This service provides for functionalities concerning http transactions.
- *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @link  https://docs.unzer.com/
- *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Services
- */
+
 namespace UnzerSDK\Services;
 
 use UnzerSDK\Adapter\CurlAdapter;
@@ -30,13 +8,22 @@
 use UnzerSDK\Unzer;
 use UnzerSDK\Resources\AbstractUnzerResource;
 use RuntimeException;
+
 use function in_array;
+
 use const PHP_VERSION;
 
+/**
+ * This service provides for functionalities concerning http transactions.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
 class HttpService
 {
     private const URL_PART_STAGING_ENVIRONMENT = 'stg';
     private const URL_PART_DEVELOPMENT_ENVIRONMENT = 'dev';
+    private const URL_PART_SANDBOX_ENVIRONMENT = 'sbx';
 
     /** @var HttpAdapterInterface $httpAdapter */
     private $httpAdapter;
@@ -44,8 +31,6 @@ class HttpService
     /** @var EnvironmentService $environmentService */
     private $environmentService;
 
-    //<editor-fold desc="Getters/Setters">
-
     /**
      * Returns the currently set HttpAdapter.
      * If it is not set it will create a CurlRequest by default and return it.
@@ -95,14 +80,13 @@ public function setEnvironmentService(EnvironmentService $environmentService): H
         return $this;
     }
 
-    //</editor-fold>
-
     /**
      * send post request to payment server
      *
-     * @param $uri string url of the target system
-     * @param AbstractUnzerResource $resource
-     * @param string                $httpMethod
+     * @param                        $uri        string|null uri of the target system
+     * @param ?AbstractUnzerResource $resource
+     * @param string                 $httpMethod
+     * @param string                 $apiVersion
      *
      * @return string
      *
@@ -110,9 +94,10 @@ public function setEnvironmentService(EnvironmentService $environmentService): H
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
     public function send(
-        $uri = null,
-        AbstractUnzerResource $resource = null,
-        $httpMethod = HttpAdapterInterface::REQUEST_GET
+        ?string                $uri = null,
+        ?AbstractUnzerResource $resource = null,
+        string                 $httpMethod = HttpAdapterInterface::REQUEST_GET,
+        string                 $apiVersion = Unzer::API_VERSION
     ): string {
         if (!$resource instanceof AbstractUnzerResource) {
             throw new RuntimeException('Transfer object is empty!');
@@ -120,10 +105,10 @@ public function send(
         $unzerObj = $resource->getUnzerObject();
 
         // perform request
-        $url     = $this->getEnvironmentUrl($uri);
+        $requestUrl = $this->buildRequestUrl($uri, $apiVersion, $unzerObj);
         $payload = $resource->jsonSerialize();
-        $headers = $this->composerHttpHeaders($unzerObj);
-        $this->initRequest($url, $payload, $httpMethod, $headers);
+        $headers = $this->composeHttpHeaders($unzerObj);
+        $this->initRequest($requestUrl, $payload, $httpMethod, $headers);
         $httpAdapter  = $this->getAdapter();
         $response     = $httpAdapter->execute();
         $responseCode = $httpAdapter->getResponseCode();
@@ -133,7 +118,7 @@ public function send(
         try {
             $this->handleErrors($responseCode, $response);
         } finally {
-            $this->debugLog($unzerObj, $payload, $headers, $responseCode, $httpMethod, $url, $response);
+            $this->debugLog($unzerObj, $payload, $headers, $responseCode, $httpMethod, $requestUrl, $response);
         }
 
         return $response;
@@ -145,11 +130,11 @@ public function send(
      * @param string $uri
      * @param string $payload
      * @param string $httpMethod
-     * @param $httpHeaders
+     * @param array  $httpHeaders
      *
      * @throws RuntimeException
      */
-    private function initRequest($uri, $payload, $httpMethod, $httpHeaders): void
+    private function initRequest(string $uri, string $payload, string $httpMethod, array $httpHeaders): void
     {
         $httpAdapter = $this->getAdapter();
         $httpAdapter->init($uri, $payload, $httpMethod);
@@ -166,7 +151,7 @@ private function initRequest($uri, $payload, $httpMethod, $httpHeaders): void
      *
      * @throws UnzerApiException
      */
-    private function handleErrors($responseCode, $response): void
+    private function handleErrors(string $responseCode, ?string $response): void
     {
         if ($response === null) {
             throw new UnzerApiException('The Request returned a null response!');
@@ -199,31 +184,39 @@ private function handleErrors($responseCode, $response): void
      * @param Unzer       $unzerObj
      * @param string      $payload
      * @param mixed       $headers
-     * @param int         $responseCode
+     * @param string      $responseCode
      * @param string      $httpMethod
      * @param string      $url
      * @param string|null $response
      */
     public function debugLog(
-        Unzer $unzerObj,
-        $payload,
+        Unzer  $unzerObj,
+        string $payload,
         $headers,
-        $responseCode,
-        $httpMethod,
+        string    $responseCode,
+        string $httpMethod,
         string $url,
-        $response
+        ?string $response
     ): void {
         // mask auth string
         $authHeader = explode(' ', $headers['Authorization']);
         $authHeader[1] = ValueService::maskValue($authHeader[1]);
         $headers['Authorization'] = implode(' ', $authHeader);
 
+        // log request
         $unzerObj->debugLog($httpMethod . ': ' . $url);
-        $writingOperations = [HttpAdapterInterface::REQUEST_POST, HttpAdapterInterface::REQUEST_PUT];
+        $writingOperations = [
+            HttpAdapterInterface::REQUEST_POST,
+            HttpAdapterInterface::REQUEST_PUT,
+            HttpAdapterInterface::REQUEST_PATCH
+        ];
         $unzerObj->debugLog('Headers: ' . json_encode($headers, JSON_UNESCAPED_SLASHES));
         if (in_array($httpMethod, $writingOperations, true)) {
             $unzerObj->debugLog('Request: ' . $payload);
         }
+
+        // log response
+        $response = $response ?? '';
         $unzerObj->debugLog(
             'Response: (' . $responseCode . ') ' .
             json_encode(json_decode($response, false), JSON_UNESCAPED_SLASHES)
@@ -233,25 +226,16 @@ public function debugLog(
     /**
      * Returns the environment url.
      *
-     * @param $uri
+     * @param string $uri
+     * @param string $apiVersion
+     * @param Unzer  $unzer
      *
      * @return string
      */
-    private function getEnvironmentUrl($uri): string
+    private function buildRequestUrl(string $uri, string $apiVersion, Unzer $unzer): string
     {
-        $envUrl = [];
-        switch ($this->getEnvironmentService()->getPapiEnvironment()) {
-            case EnvironmentService::ENV_VAR_VALUE_STAGING_ENVIRONMENT:
-                $envUrl[] = self::URL_PART_STAGING_ENVIRONMENT;
-                break;
-            case EnvironmentService::ENV_VAR_VALUE_DEVELOPMENT_ENVIRONMENT:
-                $envUrl[] = self::URL_PART_DEVELOPMENT_ENVIRONMENT;
-                break;
-            default:
-                break;
-        }
-        $envUrl[] = Unzer::BASE_URL;
-        return 'https://' . implode('-', $envUrl) . '/' . Unzer::API_VERSION . $uri;
+        $envPrefix = $this->getEnvironmentPrefix($unzer);
+        return "https://" . $envPrefix . Unzer::BASE_URL . "/" . $apiVersion . $uri;
     }
 
     /**
@@ -259,9 +243,10 @@ private function getEnvironmentUrl($uri): string
      *
      * @return array
      */
-    public function composerHttpHeaders(Unzer $unzer): array
+    public function composeHttpHeaders(Unzer $unzer): array
     {
         $locale      = $unzer->getLocale();
+        $clientIp    = $unzer->getClientIp();
         $key         = $unzer->getKey();
         $httpHeaders = [
             'Authorization' => 'Basic ' . base64_encode($key . ':'),
@@ -273,7 +258,48 @@ public function composerHttpHeaders(Unzer $unzer): array
         if (!empty($locale)) {
             $httpHeaders['Accept-Language'] = $locale;
         }
+        if (!empty($clientIp)) {
+            $httpHeaders['CLIENTIP'] = $clientIp;
+        }
 
         return $httpHeaders;
     }
+
+    /** Determine the environment to be used for Api calls and returns the prefix for it.
+     * Production environment has no prefix.
+     *
+     * @param Unzer $unzer
+     *
+     * @return string
+     */
+    private function getEnvironmentPrefix(Unzer $unzer): string
+    {
+        // Production Environment uses no prefix.
+        if ($this->isProductionKey($unzer->getKey())) {
+            return '';
+        }
+
+        switch ($this->getEnvironmentService()->getPapiEnvironment()) {
+            case EnvironmentService::ENV_VAR_VALUE_STAGING_ENVIRONMENT:
+                $envPrefix = self::URL_PART_STAGING_ENVIRONMENT;
+                break;
+            case EnvironmentService::ENV_VAR_VALUE_DEVELOPMENT_ENVIRONMENT:
+                $envPrefix = self::URL_PART_DEVELOPMENT_ENVIRONMENT;
+                break;
+            default:
+                $envPrefix = self::URL_PART_SANDBOX_ENVIRONMENT;
+        }
+        return $envPrefix . '-';
+    }
+
+    /** Determine whether key is for production environment.
+     *
+     * @param string $privateKey
+     *
+     * @return bool
+     */
+    private function isProductionKey(string $privateKey): bool
+    {
+        return strpos($privateKey, 'p') === 0;
+    }
 }
diff --git a/vendor/unzerdev/php-sdk/src/Services/IdService.php b/vendor/unzerdev/php-sdk/src/Services/IdService.php
index 1d4e588..aecb23b 100644
--- a/vendor/unzerdev/php-sdk/src/Services/IdService.php
+++ b/vendor/unzerdev/php-sdk/src/Services/IdService.php
@@ -1,32 +1,17 @@
 <?php
+
+namespace UnzerSDK\Services;
+
+use RuntimeException;
+
+use function count;
+
 /**
  * This service provides for all methods concerning id strings.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Services
  */
-namespace UnzerSDK\Services;
-
-use function count;
-use RuntimeException;
-
 class IdService
 {
     /**
@@ -43,10 +28,10 @@ class IdService
      *
      * @throws RuntimeException
      */
-    public static function getResourceIdFromUrl($url, $idString, $onlyLast = false): string
+    public static function getResourceIdFromUrl(string $url, string $idString, bool $onlyLast = false): string
     {
         $matches = [];
-        $pattern = '/\/([s|p]{1}-' . $idString . '-[a-z\d]+)\/?' . ($onlyLast ? '$':'') . '/';
+        $pattern = '/\/([s|p]{1}-' . $idString . '-[a-z\d]+)\/?' . ($onlyLast ? '$' : '') . '/';
         preg_match($pattern, $url, $matches);
 
         if (count($matches) < 2) {
@@ -56,6 +41,36 @@ public static function getResourceIdFromUrl($url, $idString, $onlyLast = false):
         return $matches[1];
     }
 
+    /**
+     * Determine base on the cancellation URL if the transaction refers directly to the payment or not.
+     *
+     * @param string $url
+     *
+     * @return string
+     *
+     * @throws RuntimeException
+     */
+    public static function isPaymentCancellation(string $url): string
+    {
+        $pattern = '/\/payments\/[s|p]{1}-pay-[a-z\d]+\/(charges|authorize)\/cancels\/[s|p]{1}-cnl-[a-z\d]+/';
+        return preg_match($pattern, $url) === 1;
+    }
+
+    /**
+     * Determine base on the chargeback URL if the transaction refers directly to the payment or not.
+     *
+     * @param string $url
+     *
+     * @return string
+     *
+     * @throws RuntimeException
+     */
+    public static function isPaymentChargeback(string $url): string
+    {
+        $pattern = '/\/payments\/[s|p]{1}-pay-[a-z\d]+\/(charges|authorize)\/chargebacks\/[s|p]{1}-cbk-[a-z\d]+/';
+        return preg_match($pattern, $url) === 1;
+    }
+
     /**
      * Behaves like getResourceIdFromUrl but does not throw exception but returns null if the id can not be detected.
      *
@@ -65,7 +80,7 @@ public static function getResourceIdFromUrl($url, $idString, $onlyLast = false):
      *
      * @return string|null
      */
-    public static function getResourceIdOrNullFromUrl($url, $idString, $onlyLast = false): ?string
+    public static function getResourceIdOrNullFromUrl(string $url, string $idString, bool $onlyLast = false): ?string
     {
         try {
             return self::getResourceIdFromUrl($url, $idString, $onlyLast);
@@ -79,17 +94,17 @@ public static function getResourceIdOrNullFromUrl($url, $idString, $onlyLast = f
      *
      * @return string|null
      */
-    public static function getLastResourceIdFromUrlString($url): ?string
+    public static function getLastResourceIdFromUrlString(string $url): ?string
     {
         return self::getResourceIdOrNullFromUrl($url, '([a-z]{3}|p24)', true);
     }
 
     /**
-     * @param $typeId
+     * @param string $typeId
      *
      * @return string|null
      */
-    public static function getResourceTypeFromIdString($typeId): ?string
+    public static function getResourceTypeFromIdString(string $typeId): ?string
     {
         $typeIdString = null;
 
diff --git a/vendor/unzerdev/php-sdk/src/Services/PaymentService.php b/vendor/unzerdev/php-sdk/src/Services/PaymentService.php
index a30bd37..33eb0bb 100644
--- a/vendor/unzerdev/php-sdk/src/Services/PaymentService.php
+++ b/vendor/unzerdev/php-sdk/src/Services/PaymentService.php
@@ -1,32 +1,13 @@
 <?php
-/**
- * This service provides for functionalities concerning payment transactions.
- *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @link  https://docs.unzer.com/
- *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Services
- */
+
 namespace UnzerSDK\Services;
 
 use DateTime;
 use UnzerSDK\Constants\TransactionTypes;
 use UnzerSDK\Exceptions\UnzerApiException;
+use UnzerSDK\Resources\EmbeddedResources\Paylater\InstallmentPlansQuery;
+use UnzerSDK\Resources\PaylaterInstallmentPlans;
+use UnzerSDK\Resources\PaymentTypes\PaylaterInstallment;
 use UnzerSDK\Unzer;
 use UnzerSDK\Interfaces\PaymentServiceInterface;
 use UnzerSDK\Resources\AbstractUnzerResource;
@@ -44,6 +25,12 @@
 use UnzerSDK\Resources\TransactionTypes\Shipment;
 use RuntimeException;
 
+/**
+ * This service provides for functionalities concerning payment transactions.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
 class PaymentService implements PaymentServiceInterface
 {
     /** @var Unzer */
@@ -59,8 +46,6 @@ public function __construct(Unzer $unzer)
         $this->unzer       = $unzer;
     }
 
-    //<editor-fold desc="Getters/Setters"
-
     /**
      * @return Unzer
      */
@@ -88,11 +73,36 @@ public function getResourceService(): ResourceService
         return $this->getUnzer()->getResourceService();
     }
 
-    //</editor-fold>
+    public function performAuthorization(
+        Authorization $authorization,
+        $paymentType,
+        $customer = null,
+        Metadata $metadata = null,
+        Basket $basket = null
+    ): Authorization {
+        $payment = $this->createPayment($paymentType);
+        $paymentType = $payment->getPaymentType();
+        $authorization->setSpecialParams($paymentType !== null ? $paymentType->getTransactionParams() : []);
+
+        $payment->setAuthorization($authorization)->setCustomer($customer)->setMetadata($metadata)->setBasket($basket);
 
-    //<editor-fold desc="Transactions">
+        $this->getResourceService()->createResource($authorization);
+        return $authorization;
+    }
 
-    //<editor-fold desc="Authorize transaction">
+    /**
+     * {@inheritDoc}
+     *
+     * @param Authorization $payment
+     */
+    public function updateAuthorization($payment, Authorization $authorization): Authorization
+    {
+        $authorization->setId(null);
+        $paymentResource = $this->getResourceService()->getPaymentResource($payment);
+        $authorization->setPayment($paymentResource);
+        $this->getResourceService()->patchResource($authorization);
+        return $authorization;
+    }
 
     /**
      * {@inheritDoc}
@@ -118,8 +128,7 @@ public function authorize(
         $authorization = (new Authorization($amount, $currency, $returnUrl))
             ->setOrderId($orderId)
             ->setInvoiceId($invoiceId)
-            ->setPaymentReference($referenceText)
-            ->setSpecialParams($paymentType !== null ? $paymentType->getTransactionParams() : []);
+            ->setPaymentReference($referenceText);
         if ($card3ds !== null) {
             $authorization->setCard3ds($card3ds);
         }
@@ -128,13 +137,40 @@ public function authorize(
         if ($recurrenceType !== null) {
             $authorization->setRecurrenceType($recurrenceType);
         }
-        $this->getResourceService()->createResource($authorization);
+        $this->performAuthorization($authorization, $paymentType, $customer, $metadata, $basket);
         return $authorization;
     }
 
-    //</editor-fold>
+    /**
+     * {@inheritDoc}
+     */
+    public function performCharge(Charge $charge, $paymentType, $customer = null, Metadata $metadata = null, Basket $basket = null): Charge
+    {
+        $payment     = $this->createPayment($paymentType);
+        $paymentType = $payment->getPaymentType();
+
+        /** @var Charge $charge */
+        $charge->setSpecialParams($paymentType->getTransactionParams() ?? []);
+        $payment->addCharge($charge)->setCustomer($customer)->setMetadata($metadata)->setBasket($basket);
+
+        $this->getResourceService()->createResource($charge);
+
+        return $charge;
+    }
 
-    //<editor-fold desc="Charge transaction">
+    /**
+     * {@inheritDoc}
+     *
+     * @param Charge $payment
+     */
+    public function updateCharge($payment, Charge $charge): Charge
+    {
+        $charge->setId(null);
+        $paymentResource = $this->getResourceService()->getPaymentResource($payment);
+        $charge->setPayment($paymentResource);
+        $this->getResourceService()->patchResource($charge);
+        return $charge;
+    }
 
     /**
      * {@inheritDoc}
@@ -160,8 +196,7 @@ public function charge(
         $charge = (new Charge($amount, $currency, $returnUrl))
             ->setOrderId($orderId)
             ->setInvoiceId($invoiceId)
-            ->setPaymentReference($paymentReference)
-            ->setSpecialParams($paymentType->getTransactionParams() ?? []);
+            ->setPaymentReference($paymentReference);
         if ($card3ds !== null) {
             $charge->setCard3ds($card3ds);
         }
@@ -170,9 +205,8 @@ public function charge(
         if ($recurrenceType !== null) {
             $charge->setRecurrenceType($recurrenceType);
         }
-        $this->getResourceService()->createResource($charge);
 
-        return $charge;
+        return $this->performCharge($charge, $paymentType, $customer, $metadata, $basket);
     }
 
     /**
@@ -184,8 +218,7 @@ public function chargeAuthorization(
         string $orderId = null,
         string $invoiceId = null
     ): Charge {
-        $paymentResource = $this->getResourceService()->getPaymentResource($payment);
-        return $this->chargePayment($paymentResource, $amount, $orderId, $invoiceId);
+        return $this->chargePayment($payment, $amount, $orderId, $invoiceId);
     }
 
     /**
@@ -194,41 +227,47 @@ public function chargeAuthorization(
     public function chargePayment(
         $payment,
         float $amount = null,
-        string $currency = null,
         string $orderId = null,
         string $invoiceId = null
     ): Charge {
-        $charge = new Charge($amount, $currency);
-        $charge->setPayment($payment);
+        $charge = new Charge($amount);
+
         if ($orderId !== null) {
             $charge->setOrderId($orderId);
         }
         if ($invoiceId !== null) {
             $charge->setInvoiceId($invoiceId);
         }
-        $payment->addCharge($charge);
-        $this->getResourceService()->createResource($charge);
-        return $charge;
+
+        return $this->performChargeOnPayment($payment, $charge);
     }
 
-    //</editor-fold>
+    /**
+     * {@inheritDoc}
+     */
+    public function performChargeOnPayment($payment, Charge $charge): Charge
+    {
+        $paymentResource = $this->getResourceService()->getPaymentResource($payment);
+        $paymentResource->addCharge($charge);
+        $this->getResourceService()->createResource($charge);
 
-    //<editor-fold desc="Payout transactions">
+        return $charge;
+    }
 
     /**
      * {@inheritDoc}
      */
     public function payout(
-        $amount,
-        $currency,
+        float    $amount,
+        string   $currency,
         $paymentType,
-        $returnUrl,
+        string   $returnUrl,
         $customer = null,
-        $orderId = null,
-        $metadata = null,
-        $basket = null,
-        $invoiceId = null,
-        $referenceText = null
+        string   $orderId = null,
+        Metadata $metadata = null,
+        Basket   $basket = null,
+        string   $invoiceId = null,
+        string $referenceText = null
     ): Payout {
         $payment = $this->createPayment($paymentType);
         $payout = (new Payout($amount, $currency, $returnUrl))
@@ -241,10 +280,6 @@ public function payout(
         return $payout;
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Shipment transaction">
-
     /**
      * {@inheritDoc}
      */
@@ -257,12 +292,6 @@ public function ship($payment, string $invoiceId = null, string $orderId = null)
         return $shipment;
     }
 
-    //</editor-fold>
-
-    //</editor-fold>
-
-    //<editor-fold desc="Paypage">
-
     /**
      * {@inheritDoc}
      */
@@ -287,17 +316,13 @@ public function initPayPageAuthorize(
         return $this->initPayPage($paypage, TransactionTypes::AUTHORIZATION, $customer, $basket, $metadata);
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Installment Secured">
-
     /**
      * {@inheritDoc}
      */
     public function fetchInstallmentPlans(
-        $amount,
-        $currency,
-        $effectiveInterest,
+        float    $amount,
+        string   $currency,
+        float    $effectiveInterest,
         DateTime $orderDate = null
     ): InstalmentPlans {
         $ins   = (new InstallmentSecured(null, null, null))->setParentResource($this->unzer);
@@ -307,9 +332,16 @@ public function fetchInstallmentPlans(
         return $plans;
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Helpers">
+    /**
+     * {@inheritDoc}
+     */
+    public function fetchPaylaterInstallmentPlans(
+        InstallmentPlansQuery $paylaterInstallmentPlansQuery
+    ): PaylaterInstallmentPlans {
+        $paylaterInstallment = (new PaylaterInstallment(null, null, null, null))->setParentResource($this->unzer);
+        $plans = (new PaylaterInstallmentPlans())->setQueryParameter($paylaterInstallmentPlansQuery)->setParentResource($paylaterInstallment);
+        return $this->unzer->getResourceService()->fetchResource($plans);
+    }
 
     /**
      * Creates the PayPage for the requested transaction method.
@@ -331,14 +363,14 @@ public function fetchInstallmentPlans(
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
     private function initPayPage(
-        Paypage $paypage,
-        $action,
+        Paypage  $paypage,
+        string   $action,
         Customer $customer = null,
-        Basket $basket = null,
+        Basket   $basket = null,
         Metadata $metadata = null
     ): Paypage {
         $paypage->setAction($action)->setParentResource($this->unzer);
-        $payment = $this->createPayment($paypage)->setBasket($basket)->setCustomer($customer)->setMetadata($metadata);
+        $payment = $this->createPayment($paypage)->setBasket($basket)->setCustomer($customer)->setMetadata($metadata)->setPayPage($paypage);
         $this->getResourceService()->createResource($paypage->setPayment($payment));
         return $paypage;
     }
@@ -357,6 +389,4 @@ private function createPayment($paymentType): AbstractUnzerResource
     {
         return (new Payment($this->unzer))->setPaymentType($paymentType);
     }
-
-    //</editor-fold>
 }
diff --git a/vendor/unzerdev/php-sdk/src/Services/ResourceNameService.php b/vendor/unzerdev/php-sdk/src/Services/ResourceNameService.php
index cfdbf4c..599b108 100644
--- a/vendor/unzerdev/php-sdk/src/Services/ResourceNameService.php
+++ b/vendor/unzerdev/php-sdk/src/Services/ResourceNameService.php
@@ -1,29 +1,13 @@
 <?php
+
+namespace UnzerSDK\Services;
+
 /**
  * This service provides for functionalities concerning resource names.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Services
  */
-namespace UnzerSDK\Services;
-
 class ResourceNameService
 {
     /**
@@ -33,7 +17,7 @@ class ResourceNameService
      *
      * @return string
      */
-    public static function getClassShortName($classString): string
+    public static function getClassShortName(string $classString): string
     {
         $classNameParts = explode('\\', $classString);
         return end($classNameParts);
@@ -46,7 +30,7 @@ public static function getClassShortName($classString): string
      *
      * @return string
      */
-    public static function getClassShortNameKebapCase($classString): string
+    public static function getClassShortNameKebapCase(string $classString): string
     {
         return self::toKebapCase(self::getClassShortName($classString));
     }
@@ -58,7 +42,7 @@ public static function getClassShortNameKebapCase($classString): string
      *
      * @return string
      */
-    private static function toKebapCase($str): string
+    private static function toKebapCase(string $str): string
     {
         $kebapCaseString = preg_replace_callback(
             '/([A-Z][a-z])+/',
diff --git a/vendor/unzerdev/php-sdk/src/Services/ResourceService.php b/vendor/unzerdev/php-sdk/src/Services/ResourceService.php
index 0feacbc..aac29e3 100644
--- a/vendor/unzerdev/php-sdk/src/Services/ResourceService.php
+++ b/vendor/unzerdev/php-sdk/src/Services/ResourceService.php
@@ -1,27 +1,5 @@
 <?php
-/**
- * This service provides for all methods to manage resources with the api.
- *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @link  https://docs.unzer.com/
- *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Services
- */
+
 namespace UnzerSDK\Services;
 
 use DateTime;
@@ -30,7 +8,17 @@
 use UnzerSDK\Constants\ApiResponseCodes;
 use UnzerSDK\Constants\IdStrings;
 use UnzerSDK\Exceptions\UnzerApiException;
+use UnzerSDK\Resources\Config;
 use UnzerSDK\Resources\PaymentTypes\Applepay;
+use UnzerSDK\Resources\PaymentTypes\Googlepay;
+use UnzerSDK\Resources\PaymentTypes\Klarna;
+use UnzerSDK\Resources\PaymentTypes\PaylaterDirectDebit;
+use UnzerSDK\Resources\PaymentTypes\PaylaterInstallment;
+use UnzerSDK\Resources\PaymentTypes\Paypage;
+use UnzerSDK\Resources\PaymentTypes\PayU;
+use UnzerSDK\Resources\PaymentTypes\PostFinanceCard;
+use UnzerSDK\Resources\PaymentTypes\PostFinanceEfinance;
+use UnzerSDK\Resources\TransactionTypes\Chargeback;
 use UnzerSDK\Unzer;
 use UnzerSDK\Interfaces\ResourceServiceInterface;
 use UnzerSDK\Resources\AbstractUnzerResource;
@@ -49,6 +37,7 @@
 use UnzerSDK\Resources\PaymentTypes\Ideal;
 use UnzerSDK\Resources\PaymentTypes\Invoice;
 use UnzerSDK\Resources\PaymentTypes\InvoiceSecured;
+use UnzerSDK\Resources\PaymentTypes\PaylaterInvoice;
 use UnzerSDK\Resources\PaymentTypes\Paypal;
 use UnzerSDK\Resources\PaymentTypes\PIS;
 use UnzerSDK\Resources\PaymentTypes\Prepayment;
@@ -66,9 +55,16 @@
 use UnzerSDK\Traits\CanRecur;
 use RuntimeException;
 use stdClass;
+
 use function in_array;
 use function is_string;
 
+/**
+ * This service provides for all methods to manage resources with the api.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
 class ResourceService implements ResourceServiceInterface
 {
     /** @var Unzer */
@@ -84,8 +80,6 @@ public function __construct(Unzer $unzer)
         $this->unzer = $unzer;
     }
 
-    //<editor-fold desc="Getters/Setters"
-
     /** @return Unzer */
     public function getUnzer(): Unzer
     {
@@ -103,15 +97,12 @@ public function setUnzer(Unzer $unzer): ResourceServiceInterface
         return $this;
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="General">
-
     /**
      * Send request to API.
      *
      * @param AbstractUnzerResource $resource
      * @param string                $httpMethod
+     * @param string                $apiVersion
      *
      * @return stdClass
      *
@@ -120,11 +111,12 @@ public function setUnzer(Unzer $unzer): ResourceServiceInterface
      */
     public function send(
         AbstractUnzerResource $resource,
-        $httpMethod = HttpAdapterInterface::REQUEST_GET
+        string                $httpMethod = HttpAdapterInterface::REQUEST_GET,
+        string                $apiVersion = Unzer::API_VERSION
     ): stdClass {
         $appendId     = $httpMethod !== HttpAdapterInterface::REQUEST_POST;
         $uri          = $resource->getUri($appendId, $httpMethod);
-        $responseJson = $resource->getUnzerObject()->getHttpService()->send($uri, $resource, $httpMethod);
+        $responseJson = $resource->getUnzerObject()->getHttpService()->send($uri, $resource, $httpMethod, $apiVersion);
         return json_decode($responseJson, false);
     }
 
@@ -160,6 +152,10 @@ public function fetchResourceByUrl($url)
         $unzer    = $this->unzer;
 
         $resourceId   = IdService::getLastResourceIdFromUrlString($url);
+        if (empty($resourceId)) {
+            return null;
+        }
+
         $resourceType = IdService::getResourceTypeFromIdString($resourceId);
         switch (true) {
             case $resourceType === IdStrings::AUTHORIZE:
@@ -180,6 +176,15 @@ public function fetchResourceByUrl($url)
             case $resourceType === IdStrings::CANCEL:
                 $paymentId  = IdService::getResourceIdFromUrl($url, IdStrings::PAYMENT);
                 $chargeId   = IdService::getResourceIdOrNullFromUrl($url, IdStrings::CHARGE);
+                if (IdService::isPaymentCancellation($url)) {
+                    $isRefund = preg_match('/charge/', $url) === 1;
+                    if ($isRefund) {
+                        $resource = $unzer->fetchPaymentRefund($paymentId, $resourceId);
+                        break;
+                    }
+                    $resource = $unzer->fetchPaymentReversal($paymentId, $resourceId);
+                    break;
+                }
                 if ($chargeId !== null) {
                     $resource = $unzer->fetchRefundById($paymentId, $chargeId, $resourceId);
                     break;
@@ -211,10 +216,6 @@ public function fetchResourceByUrl($url)
         return $resource;
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="CRUD operations">
-
     /**
      * Create the resource on the api.
      *
@@ -228,7 +229,7 @@ public function fetchResourceByUrl($url)
     public function createResource(AbstractUnzerResource $resource): AbstractUnzerResource
     {
         $method = HttpAdapterInterface::REQUEST_POST;
-        $response = $this->send($resource, $method);
+        $response = $this->send($resource, $method, $resource->getApiVersion());
 
         $isError = isset($response->isError) && $response->isError;
         if ($isError) {
@@ -257,7 +258,32 @@ public function createResource(AbstractUnzerResource $resource): AbstractUnzerRe
     public function updateResource(AbstractUnzerResource $resource): AbstractUnzerResource
     {
         $method = HttpAdapterInterface::REQUEST_PUT;
-        $response = $this->send($resource, $method);
+        $response = $this->send($resource, $method, $resource->getApiVersion());
+
+        $isError = isset($response->isError) && $response->isError;
+        if ($isError) {
+            return $resource;
+        }
+
+        $resource->handleResponse($response, $method);
+        return $resource;
+    }
+
+    /**
+     * Update the resource on the api with PATCH method.
+     *
+     * @param AbstractUnzerResource $resource
+     *
+     * @return AbstractUnzerResource
+     *
+     * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
+     * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
+     * @throws Exception
+     */
+    public function patchResource(AbstractUnzerResource $resource): AbstractUnzerResource
+    {
+        $method = HttpAdapterInterface::REQUEST_PATCH;
+        $response = $this->send($resource, $method, $resource->getApiVersion());
 
         $isError = isset($response->isError) && $response->isError;
         if ($isError) {
@@ -278,7 +304,7 @@ public function updateResource(AbstractUnzerResource $resource): AbstractUnzerRe
      */
     public function deleteResource(AbstractUnzerResource &$resource): ?AbstractUnzerResource
     {
-        $response = $this->send($resource, HttpAdapterInterface::REQUEST_DELETE);
+        $response = $this->send($resource, HttpAdapterInterface::REQUEST_DELETE, $resource->getApiVersion());
 
         $isError = isset($response->isError) && $response->isError;
         if ($isError) {
@@ -294,7 +320,8 @@ public function deleteResource(AbstractUnzerResource &$resource): ?AbstractUnzer
     /**
      * Updates the given local resource object (id must be set)
      *
-     * @param AbstractUnzerResource $resource The local resource object to update.
+     * @param AbstractUnzerResource $resource   The local resource object to update.
+     * @param string                $apiVersion
      *
      * @return AbstractUnzerResource The updated resource object.
      *
@@ -302,19 +329,15 @@ public function deleteResource(AbstractUnzerResource &$resource): ?AbstractUnzer
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      * @throws Exception
      */
-    public function fetchResource(AbstractUnzerResource $resource): AbstractUnzerResource
+    public function fetchResource(AbstractUnzerResource $resource, string $apiVersion = Unzer::API_VERSION): AbstractUnzerResource
     {
         $method = HttpAdapterInterface::REQUEST_GET;
-        $response = $this->send($resource, $method);
+        $response = $this->send($resource, $method, $apiVersion);
         $resource->setFetchedAt(new DateTime('now'));
         $resource->handleResponse($response, $method);
         return $resource;
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Payout resource">
-
     /**
      * Fetch an Payout object by its paymentId.
      * Payout Ids are not global but specific to the payment.
@@ -336,14 +359,10 @@ public function fetchPayout($payment): Payout
         return $payout;
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Recurring">
-
     /**
      * {@inheritDoc}
      */
-    public function activateRecurringPayment($paymentType, $returnUrl, string $recurrenceType = null): Recurring
+    public function activateRecurringPayment($paymentType, string $returnUrl, string $recurrenceType = null): Recurring
     {
         $paymentTypeObject = $paymentType;
         if (is_string($paymentType)) {
@@ -364,10 +383,6 @@ public function activateRecurringPayment($paymentType, $returnUrl, string $recur
         throw new RuntimeException('Recurring is not available for the given payment type.');
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Payment resource">
-
     /**
      * Fetches the payment object if the id is given.
      * Else it just returns the given payment argument as-is.
@@ -389,6 +404,21 @@ public function getPaymentResource($payment): Payment
         return $paymentObject;
     }
 
+    /**
+     * @inheritDoc
+     */
+    public function fetchPayPage($payPage): Paypage
+    {
+        $payPageObject = $payPage;
+        if (is_string($payPage)) {
+            $payPageObject = new payPage(0, '', '');
+            $payPageObject->setId($payPage);
+        }
+
+        $this->fetchResource($payPageObject->setParentResource($this->unzer));
+        return $payPageObject;
+    }
+
     /**
      * {@inheritDoc}
      */
@@ -407,31 +437,23 @@ public function fetchPayment($payment): Payment
     /**
      * {@inheritDoc}
      */
-    public function fetchPaymentByOrderId($orderId): Payment
+    public function fetchPaymentByOrderId(string $orderId): Payment
     {
         $paymentObject = (new Payment($this->unzer))->setOrderId($orderId);
         $this->fetchResource($paymentObject);
         return $paymentObject;
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Keypair resource">
-
     /**
      * {@inheritDoc}
      */
-    public function fetchKeypair($detailed = false): Keypair
+    public function fetchKeypair(bool $detailed = false): Keypair
     {
         $keyPair = (new Keypair())->setParentResource($this->unzer)->setDetailed($detailed);
         $this->fetchResource($keyPair);
         return $keyPair;
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Metadata resource">
-
     /**
      * {@inheritDoc}
      */
@@ -456,10 +478,6 @@ public function fetchMetadata($metadata): Metadata
         return $metadataObject;
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Basket resource">
-
     /**
      * {@inheritDoc}
      */
@@ -481,7 +499,14 @@ public function fetchBasket($basket): Basket
         }
         $basketObj->setParentResource($this->unzer);
 
-        $this->fetchResource($basketObj);
+        try {
+            $this->fetchResource($basketObj, 'v2');
+        } catch (UnzerApiException $exception) {
+            if ($exception->getCode() !== ApiResponseCodes::API_ERROR_BASKET_NOT_FOUND) {
+                throw $exception;
+            }
+            $this->fetchResource($basketObj);
+        }
         return $basketObj;
     }
 
@@ -495,10 +520,6 @@ public function updateBasket(Basket $basket): Basket
         return $basket;
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="PaymentType resource">
-
     /**
      * {@inheritDoc}
      */
@@ -512,72 +533,9 @@ public function createPaymentType(BasePaymentType $paymentType): BasePaymentType
     /**
      * {@inheritDoc}
      */
-    public function fetchPaymentType($typeId): BasePaymentType
+    public function fetchPaymentType(string $typeId): BasePaymentType
     {
-        $resourceType = IdService::getResourceTypeFromIdString($typeId);
-        switch ($resourceType) {
-            case IdStrings::ALIPAY:
-                $paymentType = new Alipay();
-                break;
-            case IdStrings::APPLEPAY:
-                $paymentType = new Applepay(null, null, null, null);
-                break;
-            case IdStrings::BANCONTACT:
-                $paymentType = new Bancontact();
-                break;
-            case IdStrings::CARD:
-                $paymentType = new Card(null, null);
-                break;
-            case IdStrings::EPS:
-                $paymentType = new EPS();
-                break;
-            case IdStrings::GIROPAY:
-                $paymentType = new Giropay();
-                break;
-            case IdStrings::HIRE_PURCHASE_DIRECT_DEBIT:
-            case IdStrings::INSTALLMENT_SECURED:
-                $paymentType = new InstallmentSecured();
-                break;
-            case IdStrings::IDEAL:
-                $paymentType = new Ideal();
-                break;
-            case IdStrings::INVOICE:
-                $paymentType = new Invoice();
-                break;
-            case IdStrings::INVOICE_FACTORING:
-            case IdStrings::INVOICE_GUARANTEED:
-            case IdStrings::INVOICE_SECURED:
-                $paymentType = new InvoiceSecured();
-                break;
-            case IdStrings::PAYPAL:
-                $paymentType = new Paypal();
-                break;
-            case IdStrings::PIS:
-                $paymentType = new PIS();
-                break;
-            case IdStrings::PREPAYMENT:
-                $paymentType = new Prepayment();
-                break;
-            case IdStrings::PRZELEWY24:
-                $paymentType = new Przelewy24();
-                break;
-            case IdStrings::SEPA_DIRECT_DEBIT:
-                $paymentType = new SepaDirectDebit(null);
-                break;
-            case IdStrings::SEPA_DIRECT_DEBIT_GUARANTEED:
-            case IdStrings::SEPA_DIRECT_DEBIT_SECURED:
-                $paymentType = new SepaDirectDebitSecured(null);
-                break;
-            case IdStrings::SOFORT:
-                $paymentType = new Sofort();
-                break;
-            case IdStrings::WECHATPAY:
-                $paymentType = new Wechatpay();
-                break;
-            default:
-                throw new RuntimeException('Invalid payment type!');
-                break;
-        }
+        $paymentType = self::getTypeInstanceFromIdString($typeId);
 
         /** @var BasePaymentType $paymentType */
         $paymentType = $paymentType->setParentResource($this->unzer)->setId($typeId);
@@ -595,10 +553,6 @@ public function updatePaymentType(BasePaymentType $paymentType): BasePaymentType
         return $returnPaymentType;
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Customer resource">
-
     /**
      * {@inheritDoc}
      */
@@ -649,7 +603,7 @@ public function fetchCustomer($customer): Customer
     /**
      * {@inheritDoc}
      */
-    public function fetchCustomerByExtCustomerId($customerId): Customer
+    public function fetchCustomerByExtCustomerId(string $customerId): Customer
     {
         $customerObject = (new Customer())->setCustomerId($customerId);
         $this->fetchResource($customerObject->setParentResource($this->unzer));
@@ -679,10 +633,6 @@ public function deleteCustomer($customer): void
         $this->deleteResource($customerObject);
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Authorization resource">
-
     /**
      * {@inheritDoc}
      */
@@ -700,9 +650,6 @@ public function fetchAuthorization($payment): Authorization
         return $authorize;
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Charge resource">
     public function fetchCharge(Charge $charge): Charge
     {
         $this->fetchResource($charge);
@@ -712,7 +659,7 @@ public function fetchCharge(Charge $charge): Charge
     /**
      * {@inheritDoc}
      */
-    public function fetchChargeById($payment, $chargeId): Charge
+    public function fetchChargeById($payment, string $chargeId): Charge
     {
         $paymentObject = $this->fetchPayment($payment);
         $charge = $paymentObject->getCharge($chargeId, true);
@@ -725,14 +672,35 @@ public function fetchChargeById($payment, $chargeId): Charge
         return $charge;
     }
 
-    //</editor-fold>
+    /**
+     * {@inheritDoc}
+     */
+    public function fetchChargeback(Chargeback $chargeback): Chargeback
+    {
+        $this->fetchResource($chargeback);
+        return $chargeback;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function fetchChargebackById(string $paymentId, string $chargebackId, ?string $chargeId): Chargeback
+    {
+        $paymentObject = $this->fetchPayment($paymentId);
+        $chargeback = $paymentObject->getChargeback($chargebackId, $chargeId, true);
+
+        if (!$chargeback instanceof Chargeback) {
+            throw new RuntimeException('The chargeback object could not be found.');
+        }
 
-    //<editor-fold desc="Cancellation resource">
+        $this->fetchResource($chargeback);
+        return $chargeback;
+    }
 
     /**
      * {@inheritDoc}
      */
-    public function fetchReversalByAuthorization($authorization, $cancellationId): Cancellation
+    public function fetchReversalByAuthorization(Authorization $authorization, string $cancellationId): Cancellation
     {
         $this->fetchResource($authorization);
         return $authorization->getCancellation($cancellationId);
@@ -741,7 +709,7 @@ public function fetchReversalByAuthorization($authorization, $cancellationId): C
     /**
      * {@inheritDoc}
      */
-    public function fetchReversal($payment, $cancellationId): Cancellation
+    public function fetchReversal($payment, string $cancellationId): Cancellation
     {
         /** @var Authorization $authorization */
         $authorization = $this->fetchPayment($payment)->getAuthorization();
@@ -751,7 +719,7 @@ public function fetchReversal($payment, $cancellationId): Cancellation
     /**
      * {@inheritDoc}
      */
-    public function fetchRefundById($payment, $chargeId, $cancellationId): Cancellation
+    public function fetchRefundById($payment, string $chargeId, string $cancellationId): Cancellation
     {
         /** @var Charge $charge */
         $charge = $this->fetchChargeById($payment, $chargeId);
@@ -761,25 +729,166 @@ public function fetchRefundById($payment, $chargeId, $cancellationId): Cancellat
     /**
      * {@inheritDoc}
      */
-    public function fetchRefund(Charge $charge, $cancellationId): Cancellation
+    public function fetchRefund(Charge $charge, string $cancellationId): Cancellation
     {
         /** @var Cancellation $cancel */
         $cancel = $this->fetchResource($charge->getCancellation($cancellationId, true));
         return $cancel;
     }
 
-    //</editor-fold>
+    /**
+     * {@inheritDoc}
+     */
+    public function fetchPaymentRefund($payment, string $cancellationId): Cancellation
+    {
+        $charge = new Charge();
+        $paymentResource = $this->getPaymentResource($payment);
+
+        $charge->setParentResource($paymentResource);
+        $cancel = (new Cancellation())
+            ->setId($cancellationId)
+            ->setPayment($paymentResource)
+            ->setParentResource($charge);
+        return $this->fetchResource($cancel);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function fetchPaymentReversal($payment, string $cancellationId): Cancellation
+    {
+        $authorization = new Authorization();
+        $paymentResource = $this->getPaymentResource($payment);
 
-    //<editor-fold desc="Shipment resource">
+        $authorization->setParentResource($paymentResource);
+        $cancel = (new Cancellation())
+            ->setId($cancellationId)
+            ->setPayment($paymentResource)
+            ->setParentResource($authorization);
+        return $this->fetchResource($cancel);
+    }
 
     /**
      * {@inheritDoc}
      */
-    public function fetchShipment($payment, $shipmentId): Shipment
+    public function fetchShipment($payment, string $shipmentId): Shipment
     {
         $paymentObject = $this->fetchPayment($payment);
         return $paymentObject->getShipment($shipmentId);
     }
 
-    //</editor-fold>
+    /**
+     * {@inheritDoc}
+     *
+     * @param Config|null $config
+     */
+    public function fetchConfig(BasePaymentType $paymentType, ?Config $config = null): Config
+    {
+        $paymentType->setParentResource($this->unzer);
+
+        $configObject = $config ?? new Config();
+        $configObject->setParentResource($paymentType);
+
+        return $this->fetchResource($configObject);
+    }
+
+    /**
+     * Creates a payment type instance from a typeId string.
+     *
+     * @param $typeId
+     *
+     * @return BasePaymentType
+     */
+    public static function getTypeInstanceFromIdString($typeId): BasePaymentType
+    {
+        $resourceType = IdService::getResourceTypeFromIdString($typeId);
+        switch ($resourceType) {
+            case IdStrings::ALIPAY:
+                $paymentType = new Alipay();
+                break;
+            case IdStrings::APPLEPAY:
+                $paymentType = new Applepay(null, null, null, null);
+                break;
+            case IdStrings::BANCONTACT:
+                $paymentType = new Bancontact();
+                break;
+            case IdStrings::CARD:
+                $paymentType = new Card(null, null);
+                break;
+            case IdStrings::EPS:
+                $paymentType = new EPS();
+                break;
+            case IdStrings::GIROPAY:
+                $paymentType = new Giropay();
+                break;
+            case IdStrings::GOOGLE_PAY:
+                $paymentType = new Googlepay();
+                break;
+            case IdStrings::HIRE_PURCHASE_DIRECT_DEBIT:
+            case IdStrings::INSTALLMENT_SECURED:
+                $paymentType = new InstallmentSecured();
+                break;
+            case IdStrings::IDEAL:
+                $paymentType = new Ideal();
+                break;
+            case IdStrings::INVOICE:
+                $paymentType = new Invoice();
+                break;
+            case IdStrings::INVOICE_FACTORING:
+            case IdStrings::INVOICE_GUARANTEED:
+            case IdStrings::INVOICE_SECURED:
+                $paymentType = new InvoiceSecured();
+                break;
+            case IdStrings::KLARNA:
+                $paymentType = new Klarna();
+                break;
+            case IdStrings::PAYPAL:
+                $paymentType = new Paypal();
+                break;
+            case IdStrings::PAYLATER_DIRECT_DEBIT:
+                $paymentType = new PaylaterDirectDebit();
+                break;
+            case IdStrings::PAYLATER_INSTALLMENT:
+                $paymentType = new PaylaterInstallment();
+                break;
+            case IdStrings::PAYLATER_INVOICE:
+                $paymentType = new PaylaterInvoice();
+                break;
+            case IdStrings::PAYU:
+                $paymentType = new PayU();
+                break;
+            case IdStrings::PIS:
+                $paymentType = new PIS();
+                break;
+            case IdStrings::POST_FINANCE_CARD:
+                $paymentType = new PostFinanceCard();
+                break;
+            case IdStrings::POST_FINANCE_EFINANCE:
+                $paymentType = new PostFinanceEfinance();
+                break;
+            case IdStrings::PREPAYMENT:
+                $paymentType = new Prepayment();
+                break;
+            case IdStrings::PRZELEWY24:
+                $paymentType = new Przelewy24();
+                break;
+            case IdStrings::SEPA_DIRECT_DEBIT:
+                $paymentType = new SepaDirectDebit(null);
+                break;
+            case IdStrings::SEPA_DIRECT_DEBIT_GUARANTEED:
+            case IdStrings::SEPA_DIRECT_DEBIT_SECURED:
+                $paymentType = new SepaDirectDebitSecured(null);
+                break;
+            case IdStrings::SOFORT:
+                $paymentType = new Sofort();
+                break;
+            case IdStrings::WECHATPAY:
+                $paymentType = new Wechatpay();
+                break;
+            default:
+                throw new RuntimeException('Invalid payment type!');
+                break;
+        }
+        return $paymentType;
+    }
 }
diff --git a/vendor/unzerdev/php-sdk/src/Services/ValueService.php b/vendor/unzerdev/php-sdk/src/Services/ValueService.php
index 539b0aa..0535279 100644
--- a/vendor/unzerdev/php-sdk/src/Services/ValueService.php
+++ b/vendor/unzerdev/php-sdk/src/Services/ValueService.php
@@ -1,32 +1,16 @@
 <?php
+
+namespace UnzerSDK\Services;
+
+use function is_float;
+use function strlen;
+
 /**
  * This service provides for functionalities concerning values and their manipulation.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Services
  */
-namespace UnzerSDK\Services;
-
-use function is_float;
-use function strlen;
-
 class ValueService
 {
     /**
@@ -45,12 +29,12 @@ public static function limitFloats($value)
     /**
      * Mask a value.
      *
-     * @param $value
+     * @param        $value
      * @param string $maskSymbol
      *
      * @return string
      */
-    public static function maskValue($value, $maskSymbol = '*'): string
+    public static function maskValue($value, string $maskSymbol = '*'): string
     {
         return substr($value, 0, 6) . str_repeat($maskSymbol, strlen($value) - 10) . substr($value, -4);
     }
diff --git a/vendor/unzerdev/php-sdk/src/Services/WebhookService.php b/vendor/unzerdev/php-sdk/src/Services/WebhookService.php
index 16e3745..c8117d1 100644
--- a/vendor/unzerdev/php-sdk/src/Services/WebhookService.php
+++ b/vendor/unzerdev/php-sdk/src/Services/WebhookService.php
@@ -1,27 +1,5 @@
 <?php
-/**
- * This service provides for all methods to manage webhooks/events.
- *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @link  https://docs.unzer.com/
- *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Services
- */
+
 namespace UnzerSDK\Services;
 
 use UnzerSDK\Unzer;
@@ -30,9 +8,16 @@
 use UnzerSDK\Resources\AbstractUnzerResource;
 use UnzerSDK\Resources\Webhook;
 use UnzerSDK\Resources\Webhooks;
-use function is_string;
 use RuntimeException;
 
+use function is_string;
+
+/**
+ * This service provides methods to manage webhooks/events.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
 class WebhookService implements WebhookServiceInterface
 {
     /** @var Unzer $unzer */
@@ -52,8 +37,6 @@ public function __construct(Unzer $unzer)
         $this->resourceService = $unzer->getResourceService();
     }
 
-    //<editor-fold desc="Getters/Setters">
-
     /**
      * @return Unzer
      */
@@ -92,10 +75,6 @@ public function setResourceService(ResourceServiceInterface $resourceService): W
         return $this;
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Webhook resource">
-
     /**
      * {@inheritDoc}
      */
@@ -126,7 +105,7 @@ public function fetchWebhook($webhook): Webhook
     /**
      * {@inheritDoc}
      */
-    public function updateWebhook($webhook): Webhook
+    public function updateWebhook(Webhook $webhook): Webhook
     {
         $webhook->setParentResource($this->unzer);
         $this->resourceService->updateResource($webhook);
@@ -147,10 +126,6 @@ public function deleteWebhook($webhook)
         return $this->resourceService->deleteResource($webhookObject);
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Webhooks pseudo resource">
-
     /**
      * {@inheritDoc}
      */
@@ -187,14 +162,10 @@ public function registerMultipleWebhooks(string $url, array $events): array
         return $webhooks->getWebhookList();
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Event handling">
-
     /**
      * {@inheritDoc}
      */
-    public function fetchResourceFromEvent($eventJson = null): AbstractUnzerResource
+    public function fetchResourceFromEvent(string $eventJson = null): AbstractUnzerResource
     {
         $resourceObject = null;
         $eventData = json_decode($eventJson ?? $this->readInputStream(), false);
@@ -221,6 +192,4 @@ public function readInputStream()
     {
         return file_get_contents('php://input');
     }
-
-    //</editor-fold>
 }
diff --git a/vendor/unzerdev/php-sdk/src/Traits/CanAuthorize.php b/vendor/unzerdev/php-sdk/src/Traits/CanAuthorize.php
index aaf3327..c037f19 100644
--- a/vendor/unzerdev/php-sdk/src/Traits/CanAuthorize.php
+++ b/vendor/unzerdev/php-sdk/src/Traits/CanAuthorize.php
@@ -2,26 +2,10 @@
 /**
  * This trait makes a payment type authorizable.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Traits
  */
+
 namespace UnzerSDK\Traits;
 
 use UnzerSDK\Exceptions\UnzerApiException;
@@ -36,7 +20,7 @@ trait CanAuthorize
 {
     /**
      * Authorize an amount with the given currency.
-     * Throws UnzerApiException if the transaction could not be performed (e. g. increased risk etc.).
+     * Throws UnzerApiException if the transaction could not be performed (e.g. increased risk etc.).
      *
      * @param float                $amount
      * @param string               $currency
diff --git a/vendor/unzerdev/php-sdk/src/Traits/CanAuthorizeWithCustomer.php b/vendor/unzerdev/php-sdk/src/Traits/CanAuthorizeWithCustomer.php
index 3fc9e25..7f88965 100644
--- a/vendor/unzerdev/php-sdk/src/Traits/CanAuthorizeWithCustomer.php
+++ b/vendor/unzerdev/php-sdk/src/Traits/CanAuthorizeWithCustomer.php
@@ -2,26 +2,10 @@
 /**
  * This trait makes a payment type authorizable with mandatory customer.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Traits
  */
+
 namespace UnzerSDK\Traits;
 
 use UnzerSDK\Exceptions\UnzerApiException;
@@ -36,11 +20,11 @@ trait CanAuthorizeWithCustomer
 {
     /**
      * Authorize an amount with the given currency.
-     * Throws UnzerApiException if the transaction could not be performed (e. g. increased risk etc.).
+     * Throws UnzerApiException if the transaction could not be performed (e.g. increased risk etc.).
      *
-     * @param $amount
-     * @param $currency
-     * @param $returnUrl
+     * @param                 $amount
+     * @param                 $currency
+     * @param                 $returnUrl
      * @param Customer|string $customer
      * @param string|null     $orderId
      * @param Metadata|null   $metadata
diff --git a/vendor/unzerdev/php-sdk/src/Traits/CanDirectCharge.php b/vendor/unzerdev/php-sdk/src/Traits/CanDirectCharge.php
index 77bb1cb..cffaefa 100644
--- a/vendor/unzerdev/php-sdk/src/Traits/CanDirectCharge.php
+++ b/vendor/unzerdev/php-sdk/src/Traits/CanDirectCharge.php
@@ -2,26 +2,10 @@
 /**
  * This trait makes a payment type chargeable.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Traits
  */
+
 namespace UnzerSDK\Traits;
 
 use UnzerSDK\Exceptions\UnzerApiException;
@@ -36,11 +20,11 @@ trait CanDirectCharge
 {
     /**
      * Charge an amount with the given currency.
-     * Throws UnzerApiException if the transaction could not be performed (e. g. increased risk etc.).
+     * Throws UnzerApiException if the transaction could not be performed (e.g. increased risk etc.).
      *
-     * @param $amount
-     * @param $currency
-     * @param $returnUrl
+     * @param                      $amount
+     * @param                      $currency
+     * @param                      $returnUrl
      * @param Customer|string|null $customer
      * @param string|null          $orderId
      * @param Metadata|string|null $metadata
diff --git a/vendor/unzerdev/php-sdk/src/Traits/CanDirectChargeWithCustomer.php b/vendor/unzerdev/php-sdk/src/Traits/CanDirectChargeWithCustomer.php
index 1c7325b..d2314ef 100644
--- a/vendor/unzerdev/php-sdk/src/Traits/CanDirectChargeWithCustomer.php
+++ b/vendor/unzerdev/php-sdk/src/Traits/CanDirectChargeWithCustomer.php
@@ -2,26 +2,10 @@
 /**
  * This trait makes a payment type chargeable with mandatory customer.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Traits
  */
+
 namespace UnzerSDK\Traits;
 
 use UnzerSDK\Exceptions\UnzerApiException;
@@ -36,7 +20,7 @@ trait CanDirectChargeWithCustomer
 {
     /**
      * Charge an amount with the given currency.
-     * Throws UnzerApiException if the transaction could not be performed (e. g. increased risk etc.).
+     * Throws UnzerApiException if the transaction could not be performed (e.g. increased risk etc.).
      *
      * @param float           $amount
      * @param string          $currency
diff --git a/vendor/unzerdev/php-sdk/src/Traits/CanPayout.php b/vendor/unzerdev/php-sdk/src/Traits/CanPayout.php
index 8d49618..4458e68 100644
--- a/vendor/unzerdev/php-sdk/src/Traits/CanPayout.php
+++ b/vendor/unzerdev/php-sdk/src/Traits/CanPayout.php
@@ -2,26 +2,10 @@
 /**
  * Adds payout capability to payment types.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Traits
  */
+
 namespace UnzerSDK\Traits;
 
 use UnzerSDK\Exceptions\UnzerApiException;
@@ -36,7 +20,7 @@ trait CanPayout
 {
     /**
      * Credit the given amount with the given currency to this payment type.
-     * Throws UnzerApiException if the transaction could not be performed (e. g. increased risk etc.).
+     * Throws UnzerApiException if the transaction could not be performed (e.g. increased risk etc.).
      *
      * @param float                $amount
      * @param string               $currency
@@ -56,15 +40,15 @@ trait CanPayout
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
     public function payout(
-        $amount,
-        $currency,
-        $returnUrl,
+        float  $amount,
+        string $currency,
+        string $returnUrl,
         $customer = null,
-        $orderId = null,
+        string $orderId = null,
         $metadata = null,
-        $basket = null,
-        $invoiceId = null,
-        $paymentReference = null
+        Basket $basket = null,
+        string $invoiceId = null,
+        string $paymentReference = null
     ): Payout {
         if ($this instanceof UnzerParentInterface) {
             return $this->getUnzerObject()->payout(
diff --git a/vendor/unzerdev/php-sdk/src/Traits/CanPayoutWithCustomer.php b/vendor/unzerdev/php-sdk/src/Traits/CanPayoutWithCustomer.php
index 4f6c516..389a4bf 100644
--- a/vendor/unzerdev/php-sdk/src/Traits/CanPayoutWithCustomer.php
+++ b/vendor/unzerdev/php-sdk/src/Traits/CanPayoutWithCustomer.php
@@ -2,26 +2,10 @@
 /**
  * Adds payout capability to payment types.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Traits
  */
+
 namespace UnzerSDK\Traits;
 
 use UnzerSDK\Exceptions\UnzerApiException;
@@ -36,7 +20,7 @@ trait CanPayoutWithCustomer
 {
     /**
      * Credit the given amount with the given currency to this payment type.
-     * Throws UnzerApiException if the transaction could not be performed (e. g. increased risk etc.).
+     * Throws UnzerApiException if the transaction could not be performed (e.g. increased risk etc.).
      *
      * @param float                $amount
      * @param string               $currency
@@ -54,13 +38,13 @@ trait CanPayoutWithCustomer
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      */
     public function payout(
-        $amount,
-        $currency,
-        $returnUrl,
+        float  $amount,
+        string $currency,
+        string $returnUrl,
         $customer,
-        $orderId = null,
+        string $orderId = null,
         $metadata = null,
-        $basket = null
+        Basket $basket = null
     ): Payout {
         if ($this instanceof UnzerParentInterface) {
             return $this->getUnzerObject()->payout(
diff --git a/vendor/unzerdev/php-sdk/src/Traits/CanRecur.php b/vendor/unzerdev/php-sdk/src/Traits/CanRecur.php
index a2ba1f1..23e05fb 100644
--- a/vendor/unzerdev/php-sdk/src/Traits/CanRecur.php
+++ b/vendor/unzerdev/php-sdk/src/Traits/CanRecur.php
@@ -2,26 +2,10 @@
 /**
  * This trait allows a payment type to activate recurring payments.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Traits
  */
+
 namespace UnzerSDK\Traits;
 
 use UnzerSDK\Exceptions\UnzerApiException;
@@ -44,6 +28,10 @@ trait CanRecur
      *
      * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
+     *
+     * @deprecated since 1.3.0.0 Please set the recurrence type in your Charge/Authorize object using `setRecurrenceType`
+     *             before performing the transaction request.
+     *
      */
     public function activateRecurring($returnUrl, $recurrenceType = null): Recurring
     {
@@ -53,8 +41,6 @@ public function activateRecurring($returnUrl, $recurrenceType = null): Recurring
         throw new RuntimeException('Error: Recurring can not be enabled on this type.');
     }
 
-    //<editor-fold desc="Getter/Setter">
-
     /**
      * @return bool
      */
@@ -73,6 +59,4 @@ protected function setRecurring(bool $active): self
         $this->recurring = $active;
         return $this;
     }
-
-    //</editor-fold>
 }
diff --git a/vendor/unzerdev/php-sdk/src/Traits/HasAccountInformation.php b/vendor/unzerdev/php-sdk/src/Traits/HasAccountInformation.php
new file mode 100644
index 0000000..536daa4
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/src/Traits/HasAccountInformation.php
@@ -0,0 +1,86 @@
+<?php
+/*
+ *  Trait containing a property set of transaction regarding bank account information.
+ *
+ *  @link  https://docs.unzer.com/
+ */
+
+namespace UnzerSDK\Traits;
+
+trait HasAccountInformation
+{
+    /** @var string $iban */
+    private $iban;
+
+    /** @var string bic */
+    private $bic;
+
+    /** @var string $holder */
+    private $holder;
+
+    /**
+     * Returns the IBAN of the account the customer needs to transfer the amount to.
+     * E.g. invoice, prepayment, etc.
+     *
+     * @return string|null
+     */
+    public function getIban(): ?string
+    {
+        return $this->iban;
+    }
+
+    /**
+     * @param string|null $iban
+     *
+     * @return self
+     */
+    protected function setIban(?string $iban): self
+    {
+        $this->iban = $iban;
+        return $this;
+    }
+
+    /**
+     * Returns the BIC of the account the customer needs to transfer the amount to.
+     * E.g. invoice, prepayment, etc.
+     *
+     * @return string|null
+     */
+    public function getBic(): ?string
+    {
+        return $this->bic;
+    }
+
+    /**
+     * @param string|null $bic
+     *
+     * @return self
+     */
+    protected function setBic(?string $bic): self
+    {
+        $this->bic = $bic;
+        return $this;
+    }
+
+    /**
+     * Returns the holder of the account the customer needs to transfer the amount to.
+     * E.g. invoice, prepayment, etc.
+     *
+     * @return string|null
+     */
+    public function getHolder(): ?string
+    {
+        return $this->holder;
+    }
+
+    /**
+     * @param string|null $holder
+     *
+     * @return self
+     */
+    protected function setHolder(?string $holder): self
+    {
+        $this->holder = $holder;
+        return $this;
+    }
+}
diff --git a/vendor/unzerdev/php-sdk/src/Traits/HasAdditionalTransactionData.php b/vendor/unzerdev/php-sdk/src/Traits/HasAdditionalTransactionData.php
index 659c473..3dcd4b2 100644
--- a/vendor/unzerdev/php-sdk/src/Traits/HasAdditionalTransactionData.php
+++ b/vendor/unzerdev/php-sdk/src/Traits/HasAdditionalTransactionData.php
@@ -1,36 +1,25 @@
 <?php
+
 /**
  * This trait allows a transaction type to have additional transaction Data.
  *
- * Copyright (C) 2021 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @link  https://docs.unzer.com/
- *
- * @author  David Owusu <development@unzer.com>
+ * @link     https://docs.unzer.com/
  *
- * @package  UnzerSDK\Traits
  */
 
 namespace UnzerSDK\Traits;
 
 use stdClass;
+use UnzerSDK\Constants\AdditionalTransactionDataKeys;
+use UnzerSDK\Resources\EmbeddedResources\CardTransactionData;
+use UnzerSDK\Resources\EmbeddedResources\RiskData;
+use UnzerSDK\Resources\EmbeddedResources\ShippingData;
+use UnzerSDK\Resources\PaymentTypes\BasePaymentType;
 use UnzerSDK\Resources\TransactionTypes\AbstractTransactionType;
+use UnzerSDK\Services\ResourceService;
 
 trait HasAdditionalTransactionData
 {
-
     /** @var stdClass $additionalTransactionData */
     protected $additionalTransactionData;
 
@@ -69,4 +58,167 @@ public function addAdditionalTransactionData($name, $value): self
         $this->additionalTransactionData->$name = $value;
         return $this;
     }
+
+    /**
+     * Sets the shipping value inside the additional transaction Data array.
+     *
+     * @param ShippingData|null $shippingData
+     *
+     * @return $this
+     */
+    public function setShipping(?ShippingData $shippingData): self
+    {
+        $this->addAdditionalTransactionData('shipping', $shippingData);
+        return $this;
+    }
+
+    /**
+     * Gets the shipping value from the additional transaction Data array.
+     *
+     * @return ShippingData|null Returns null if shipping is empty or does not contain a ShippingObject.
+     */
+    public function getShipping(): ?ShippingData
+    {
+        $shipping = $this->getAdditionalTransactionData()->shipping ?? null;
+        return $shipping instanceof ShippingData ? $shipping : null;
+    }
+
+    /**
+     * Sets the riskData value inside the additional transaction Data array.
+     *
+     * @param RiskData|null $riskData
+     *
+     * @return $this
+     */
+    public function setRiskData(?RiskData $riskData): self
+    {
+        $this->addAdditionalTransactionData('riskData', $riskData);
+        return $this;
+    }
+
+    /**
+     * Gets the riskData value from the additional transaction Data array.
+     *
+     * @return RiskData|null
+     */
+    public function getRiskData(): ?RiskData
+    {
+        $riskData = $this->getAdditionalTransactionData()->riskData ?? null;
+        return $riskData instanceof RiskData ? $riskData : null;
+    }
+
+    /**
+     * Sets the privacyPolicyUrl value inside the additional transaction Data array.
+     *
+     * @param string|null $privacyPolicyUrl
+     *
+     * @return $this
+     */
+    public function setPrivacyPolicyUrl(?string $privacyPolicyUrl): self
+    {
+        $this->addAdditionalTransactionData(AdditionalTransactionDataKeys::PRIVACY_POLICY_URL, $privacyPolicyUrl);
+        return $this;
+    }
+
+    /**
+     * Gets the privacyPolicyUrl value from the additional transaction Data array.
+     *
+     * @return string|null
+     */
+    public function getPrivacyPolicyUrl(): ?string
+    {
+        $propertyKey = AdditionalTransactionDataKeys::PRIVACY_POLICY_URL;
+        return $this->getAdditionalTransactionData()->$propertyKey ?? null;
+    }
+
+    /**
+     * Sets the termsAndConditionUrl value inside the additional transaction Data array.
+     *
+     * @param string|null $termsAndConditionUrl
+     *
+     * @return $this
+     */
+    public function setTermsAndConditionUrl(?string $termsAndConditionUrl): self
+    {
+        $this->addAdditionalTransactionData(AdditionalTransactionDataKeys::TERMS_AND_CONDITION_URL, $termsAndConditionUrl);
+        return $this;
+    }
+
+    /**
+     * Gets the termsAndConditionUrl value from the additional transaction Data array.
+     *
+     * @return string|null
+     */
+    public function getTermsAndConditionUrl(): ?string
+    {
+        $propertyKey = AdditionalTransactionDataKeys::TERMS_AND_CONDITION_URL;
+        return $this->getAdditionalTransactionData()->$propertyKey ?? null;
+    }
+
+    /**
+     * Set checkout type based on the given payment Type.
+     *
+     * @param string                   $checkoutType
+     * @param BasePaymentType | string $paymentType  This is needed to set the correct key in additionalTransactionData array.
+     *
+     * @return self
+     */
+    public function setCheckoutType(string $checkoutType, $paymentType): self
+    {
+        if (is_string($paymentType)) {
+            $paymentType = ResourceService::getTypeInstanceFromIdString($paymentType);
+        }
+
+        $typeName = $paymentType::getResourceName();
+        if (empty($this->getAdditionalTransactionData()->$typeName)) {
+            $this->addAdditionalTransactionData($typeName, new StdClass());
+        }
+
+        $checkoutTypekey = AdditionalTransactionDataKeys::CHECKOUTTYPE;
+        $this->getAdditionalTransactionData()->$typeName->$checkoutTypekey = $checkoutType;
+        return $this;
+    }
+
+    /**
+     * @return string|null
+     */
+    public function getCheckoutType(): ?string
+    {
+        $additionalTransactionData = $this->getAdditionalTransactionData();
+        if ($additionalTransactionData !== null) {
+            $key = AdditionalTransactionDataKeys::CHECKOUTTYPE;
+            foreach ($additionalTransactionData as $data) {
+                if ($data instanceof stdClass && property_exists($data, $key)) {
+                    return $data->$key ?? null;
+                }
+            }
+        }
+
+        return null;
+    }
+
+    /**
+     * Get the card field from additional transaction Data.
+     *
+     * @return CardTransactionData|null "card" object of additionalTransaction data.
+     */
+    public function getCardTransactionData(): ?CardTransactionData
+    {
+        $key = AdditionalTransactionDataKeys::CARD;
+        $card = $this->getAdditionalTransactionData()->$key ?? null;
+        return $card instanceof CardTransactionData ? $card : null;
+    }
+
+    /**
+     * Sets CardTransactionData object as "card" field of additionalTransactionData.
+     *
+     * @param CardTransactionData|null $cardTransactionData
+     *
+     * @return self
+     */
+    public function setCardTransactionData(?CardTransactionData $cardTransactionData): self
+    {
+        $this->addAdditionalTransactionData(AdditionalTransactionDataKeys::CARD, $cardTransactionData);
+        return $this;
+    }
 }
diff --git a/vendor/unzerdev/php-sdk/src/Traits/HasCancellations.php b/vendor/unzerdev/php-sdk/src/Traits/HasCancellations.php
index 85d2278..989499d 100644
--- a/vendor/unzerdev/php-sdk/src/Traits/HasCancellations.php
+++ b/vendor/unzerdev/php-sdk/src/Traits/HasCancellations.php
@@ -2,26 +2,10 @@
 /**
  * This trait adds the cancellation property to a class.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Traits
  */
+
 namespace UnzerSDK\Traits;
 
 use UnzerSDK\Exceptions\UnzerApiException;
@@ -35,8 +19,6 @@ trait HasCancellations
     /** @var array $cancellations */
     private $cancellations = [];
 
-    //<editor-fold desc="Getters/Setters">
-
     /**
      * @return array
      */
@@ -81,7 +63,7 @@ public function addCancellation(Cancellation $cancellation): self
      * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
      * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
      */
-    public function getCancellation($cancellationId, $lazy = false): ?Cancellation
+    public function getCancellation(string $cancellationId, bool $lazy = false): ?Cancellation
     {
         /** @var Cancellation $cancellation */
         foreach ($this->cancellations as $cancellation) {
@@ -95,6 +77,4 @@ public function getCancellation($cancellationId, $lazy = false): ?Cancellation
         }
         return null;
     }
-
-    //</editor-fold>
 }
diff --git a/vendor/unzerdev/php-sdk/src/Traits/HasChargebacks.php b/vendor/unzerdev/php-sdk/src/Traits/HasChargebacks.php
new file mode 100644
index 0000000..6918afa
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/src/Traits/HasChargebacks.php
@@ -0,0 +1,80 @@
+<?php
+/**
+ * This trait adds the cancellation property to a class.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+
+namespace UnzerSDK\Traits;
+
+use UnzerSDK\Exceptions\UnzerApiException;
+use UnzerSDK\Interfaces\UnzerParentInterface;
+use UnzerSDK\Resources\AbstractUnzerResource;
+use RuntimeException;
+use UnzerSDK\Resources\TransactionTypes\Chargeback;
+
+trait HasChargebacks
+{
+    /** @var Chargeback[] $chargebacks */
+    private $chargebacks = [];
+
+    /**
+     * @return array
+     */
+    public function getChargebacks(): array
+    {
+        return $this->chargebacks;
+    }
+
+    /**
+     * @param array $chargebacks
+     *
+     * @return self
+     */
+    public function setChargebacks(array $chargebacks): self
+    {
+        $this->chargebacks = $chargebacks;
+        return $this;
+    }
+
+    /**
+     * @param Chargeback $chargeback
+     *
+     * @return self
+     */
+    public function addChargeback(Chargeback $chargeback): self
+    {
+        if ($this instanceof UnzerParentInterface) {
+            $chargeback->setParentResource($this);
+        }
+        $this->chargebacks[] = $chargeback;
+        return $this;
+    }
+
+    /**
+     * Return specific Chargeback object or null if it does not exist.
+     *
+     * @param string  $chargebackId The id of the chargeback object
+     * @param boolean $lazy
+     *
+     * @return Chargeback|null The chargeback or null if none could be found.
+     *
+     * @throws RuntimeException  A RuntimeException is thrown when there is an error while using the SDK.
+     * @throws UnzerApiException An UnzerApiException is thrown if there is an error returned on API-request.
+     */
+    public function getChargeback(string $chargebackId, bool $lazy = false): ?Chargeback
+    {
+        /** @var Chargeback $chargeback */
+        foreach ($this->chargebacks as $chargeback) {
+            if ($chargeback->getId() === $chargebackId) {
+                if (!$lazy && $this instanceof UnzerParentInterface) {
+                    /** @var AbstractUnzerResource $this*/
+                    $this->getResource($chargeback);
+                }
+                return $chargeback;
+            }
+        }
+        return null;
+    }
+}
diff --git a/vendor/unzerdev/php-sdk/src/Traits/HasCustomerMessage.php b/vendor/unzerdev/php-sdk/src/Traits/HasCustomerMessage.php
index e4551c4..af3cdd8 100644
--- a/vendor/unzerdev/php-sdk/src/Traits/HasCustomerMessage.php
+++ b/vendor/unzerdev/php-sdk/src/Traits/HasCustomerMessage.php
@@ -2,26 +2,10 @@
 /**
  * This trait adds the message properties to a resource class.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Traits
  */
+
 namespace UnzerSDK\Traits;
 
 use UnzerSDK\Resources\EmbeddedResources\Message;
@@ -31,8 +15,6 @@ trait HasCustomerMessage
     /** @var Message $message */
     private $message;
 
-    //<editor-fold desc="Getters/Setters">
-
     /**
      * @return Message
      */
@@ -44,6 +26,4 @@ public function getMessage(): Message
 
         return $this->message;
     }
-
-    //</editor-fold>
 }
diff --git a/vendor/unzerdev/php-sdk/src/Traits/HasDate.php b/vendor/unzerdev/php-sdk/src/Traits/HasDate.php
index 1b3ec42..77d7807 100644
--- a/vendor/unzerdev/php-sdk/src/Traits/HasDate.php
+++ b/vendor/unzerdev/php-sdk/src/Traits/HasDate.php
@@ -2,26 +2,10 @@
 /**
  * This trait adds the date property to a resource class.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Traits
  */
+
 namespace UnzerSDK\Traits;
 
 use DateTime;
@@ -32,8 +16,6 @@ trait HasDate
     /** @var DateTime $date */
     private $date;
 
-    //<editor-fold desc="Getters/Setters">
-
     /**
      * This returns the date of the Transaction as string.
      *
@@ -57,6 +39,4 @@ public function setDate(string $date): self
         $this->date = new DateTime($date);
         return $this;
     }
-
-    //</editor-fold>
 }
diff --git a/vendor/unzerdev/php-sdk/src/Traits/HasDescriptor.php b/vendor/unzerdev/php-sdk/src/Traits/HasDescriptor.php
new file mode 100644
index 0000000..5ddab85
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/src/Traits/HasDescriptor.php
@@ -0,0 +1,36 @@
+<?php
+/*
+ *  Trait containing a property set of transaction regarding bank account information.
+ *
+ *  @link  https://docs.unzer.com/
+ */
+
+namespace UnzerSDK\Traits;
+
+trait HasDescriptor
+{
+    /** @var string $descriptor */
+    private $descriptor;
+
+    /**
+     * Returns the Descriptor the customer needs to use when transferring the amount.
+     * E.g. invoice, prepayment, etc.
+     *
+     * @return string|null
+     */
+    public function getDescriptor(): ?string
+    {
+        return $this->descriptor;
+    }
+
+    /**
+     * @param string|null $descriptor
+     *
+     * @return self
+     */
+    protected function setDescriptor(?string $descriptor): self
+    {
+        $this->descriptor = $descriptor;
+        return $this;
+    }
+}
diff --git a/vendor/unzerdev/php-sdk/src/Traits/HasGeoLocation.php b/vendor/unzerdev/php-sdk/src/Traits/HasGeoLocation.php
index 3a4b026..6869a0c 100644
--- a/vendor/unzerdev/php-sdk/src/Traits/HasGeoLocation.php
+++ b/vendor/unzerdev/php-sdk/src/Traits/HasGeoLocation.php
@@ -2,26 +2,10 @@
 /**
  * This trait adds geolocation to class.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Traits
  */
+
 namespace UnzerSDK\Traits;
 
 use UnzerSDK\Resources\EmbeddedResources\GeoLocation;
@@ -31,8 +15,6 @@ trait HasGeoLocation
     /** @var GeoLocation $geoLocation */
     private $geoLocation;
 
-    //<editor-fold desc="Setters/Getters">
-
     /**
      * @return GeoLocation
      */
@@ -54,6 +36,4 @@ public function setGeoLocation(GeoLocation $geoLocation): self
         $this->geoLocation = $geoLocation;
         return $this;
     }
-
-    //</editor-fold>
 }
diff --git a/vendor/unzerdev/php-sdk/src/Traits/HasInvoiceId.php b/vendor/unzerdev/php-sdk/src/Traits/HasInvoiceId.php
index aa2f143..a41d972 100644
--- a/vendor/unzerdev/php-sdk/src/Traits/HasInvoiceId.php
+++ b/vendor/unzerdev/php-sdk/src/Traits/HasInvoiceId.php
@@ -2,26 +2,10 @@
 /**
  * This trait adds the invoiceId property to a class.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Traits
  */
+
 namespace UnzerSDK\Traits;
 
 trait HasInvoiceId
@@ -29,8 +13,6 @@ trait HasInvoiceId
     /** @var string $invoiceId */
     protected $invoiceId;
 
-    //<editor-fold desc="Getters/Setters">
-
     /**
      * @return string|null
      */
@@ -44,11 +26,9 @@ public function getInvoiceId(): ?string
      *
      * @return self
      */
-    public function setInvoiceId($invoiceId): self
+    public function setInvoiceId(?string $invoiceId): self
     {
         $this->invoiceId = $invoiceId;
         return $this;
     }
-
-    //</editor-fold>
 }
diff --git a/vendor/unzerdev/php-sdk/src/Traits/HasOrderId.php b/vendor/unzerdev/php-sdk/src/Traits/HasOrderId.php
index 6bc652a..3f0d2a3 100644
--- a/vendor/unzerdev/php-sdk/src/Traits/HasOrderId.php
+++ b/vendor/unzerdev/php-sdk/src/Traits/HasOrderId.php
@@ -2,26 +2,10 @@
 /**
  * This trait adds the orderId property to a class.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Traits
  */
+
 namespace UnzerSDK\Traits;
 
 trait HasOrderId
@@ -29,8 +13,6 @@ trait HasOrderId
     /** @var string $orderId */
     protected $orderId;
 
-    //<editor-fold desc="Getters/Setters">
-
     /**
      * @return string|null
      */
@@ -44,11 +26,9 @@ public function getOrderId(): ?string
      *
      * @return $this
      */
-    public function setOrderId($orderId): self
+    public function setOrderId(?string $orderId): self
     {
         $this->orderId = $orderId;
         return $this;
     }
-
-    //</editor-fold>
 }
diff --git a/vendor/unzerdev/php-sdk/src/Traits/HasPaymentState.php b/vendor/unzerdev/php-sdk/src/Traits/HasPaymentState.php
index 4c60f49..f24e08d 100644
--- a/vendor/unzerdev/php-sdk/src/Traits/HasPaymentState.php
+++ b/vendor/unzerdev/php-sdk/src/Traits/HasPaymentState.php
@@ -2,26 +2,10 @@
 /**
  * This trait adds the state property to a class.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Traits
  */
+
 namespace UnzerSDK\Traits;
 
 use UnzerSDK\Constants\PaymentState;
@@ -32,8 +16,6 @@ trait HasPaymentState
     /** @var int */
     private $state = 0;
 
-    //<editor-fold desc="Check for States">
-
     /**
      * Return true if the state is pending.
      *
@@ -94,9 +76,15 @@ public function isChargeBack(): bool
         return $this->getState() === PaymentState::STATE_CHARGEBACK;
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Getters/Setters">
+    /**
+     * Return true if the state is create.
+     *
+     * @return bool
+     */
+    public function isCreate(): bool
+    {
+        return $this->getState() === PaymentState::STATE_CREATE;
+    }
 
     /**
      * Returns the current state code (ref. Constants/PaymentState).
@@ -132,6 +120,4 @@ protected function setState(int $state): self
         $this->state = $state;
         return $this;
     }
-
-    //</editor-fold>
 }
diff --git a/vendor/unzerdev/php-sdk/src/Traits/HasRecurrenceType.php b/vendor/unzerdev/php-sdk/src/Traits/HasRecurrenceType.php
index a88d33a..15c04ec 100644
--- a/vendor/unzerdev/php-sdk/src/Traits/HasRecurrenceType.php
+++ b/vendor/unzerdev/php-sdk/src/Traits/HasRecurrenceType.php
@@ -3,77 +3,40 @@
 /**
  * This trait adds the short id and unique id property to a class.
  *
- * Copyright (C) 2021 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  David Owusu <development@unzer.com>
- *
- * @package  UnzerSDK\Traits
  */
 
 namespace UnzerSDK\Traits;
 
-use RuntimeException;
-use UnzerSDK\Resources\PaymentTypes\BasePaymentType;
-use UnzerSDK\Resources\TransactionTypes\AbstractTransactionType;
+use UnzerSDK\Resources\EmbeddedResources\CardTransactionData;
 
 trait HasRecurrenceType
 {
-    //<editor-fold desc="Getters/Setters">
-
     /**
      * @return string|null
      */
     public function getRecurrenceType(): ?string
     {
-        $additionalTransactionData = $this->getAdditionalTransactionData();
-        if ($additionalTransactionData !== null) {
-            foreach ($additionalTransactionData as $data) {
-                if (property_exists($data, 'recurrenceType')) {
-                    return $data->recurrenceType ?? null;
-                }
-            }
+        $cardTransactionData = $this->getCardTransactionData();
+        if ($cardTransactionData instanceof CardTransactionData) {
+            return $cardTransactionData->getRecurrenceType();
         }
 
-        return null;
+        return $this->getAdditionalTransactionData()->card['recurrenceType'] ?? null;
     }
 
     /**
-     * @param string               $recurrenceType Recurrence type used for recurring payment.
-     * @param BasePaymentType|null $paymentType    If provided recurrenceType is set based on this payment type.
-     *                                             This is required for recurring transaction, since the type can not be
-     *                                             determined automatically.
+     * @param string $recurrenceType Recurrence type used for recurring payment.
      *
      * @return $this
      */
-    public function setRecurrenceType(string $recurrenceType, BasePaymentType $paymentType = null): self
+    public function setRecurrenceType(string $recurrenceType): self
     {
-        if ($paymentType === null && $this instanceof AbstractTransactionType) {
-            $payment = $this->getPayment();
-            $paymentType = $payment ? $payment->getPaymentType() : null;
-        }
-
-        if ($paymentType === null) {
-            throw new RuntimeException('Payment type can not be determined. Set it first or provide it via parameter $paymentType.');
-        }
-        $recurrenceTypeObject = (object)['recurrenceType' => $recurrenceType];
-        $this->addAdditionalTransactionData($paymentType::getResourceName(), $recurrenceTypeObject);
+        $card = $this->getCardTransactionData() ?? new CardTransactionData();
+        $card->setRecurrenceType($recurrenceType);
+        $this->addAdditionalTransactionData('card', $card);
 
         return $this;
     }
-
-    //</editor-fold>
 }
diff --git a/vendor/unzerdev/php-sdk/src/Traits/HasStates.php b/vendor/unzerdev/php-sdk/src/Traits/HasStates.php
index 5f019f1..7224874 100644
--- a/vendor/unzerdev/php-sdk/src/Traits/HasStates.php
+++ b/vendor/unzerdev/php-sdk/src/Traits/HasStates.php
@@ -2,28 +2,15 @@
 /**
  * This trait adds the state properties to a resource class.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Traits
  */
+
 namespace UnzerSDK\Traits;
 
+use RuntimeException;
+use UnzerSDK\Constants\TransactionStatus;
+
 trait HasStates
 {
     /** @var bool $isError */
@@ -35,7 +22,8 @@ trait HasStates
     /** @var bool $isPending */
     private $isPending = false;
 
-    //<editor-fold desc="Getters/Setters">
+    /** @var bool $isResumed */
+    private $isResumed = false;
 
     /**
      * @return bool
@@ -94,5 +82,79 @@ protected function setIsPending(bool $isPending): self
         return $this;
     }
 
-    //</editor-fold>
+    /**
+     * @return bool
+     */
+    public function isResumed(): bool
+    {
+        return $this->isResumed;
+    }
+
+    /**
+     * @param bool $isResumed
+     *
+     * @return self
+     */
+    public function setIsResumed(bool $isResumed): self
+    {
+        $this->isResumed = $isResumed;
+        return $this;
+    }
+
+    /**
+     * Map the 'status' that is used for transactions in the transaction list of a payment resource.
+     * The actual transaction resource only has the isSuccess, isPending and isError property.
+     *
+     * @param string $status
+     *
+     * @throws RuntimeException
+     *
+     * @return self
+     */
+    protected function setStatus(string $status): self
+    {
+        $this->validateTransactionStatus($status);
+
+        $this->setIsSuccess(false);
+        $this->setIsPending(false);
+        $this->setIsError(false);
+
+        switch ($status) {
+            case (TransactionStatus::STATUS_ERROR):
+                $this->setIsError(true);
+                break;
+            case (TransactionStatus::STATUS_PENDING):
+                $this->setIsPending(true);
+                break;
+            case (TransactionStatus::STATUS_SUCCESS):
+                $this->setIsSuccess(true);
+                break;
+            case (TransactionStatus::STATUS_RESUMED):
+                $this->setIsResumed(true);
+                break;
+        }
+
+        return $this;
+    }
+
+    /**
+     * Check if transaction status is valid. If status is invalid a RuntimeException is thrown
+     *
+     * @param string $status
+     *
+     * @throws RuntimeException
+     */
+    public function validateTransactionStatus(string $status): void
+    {
+        $validStatusArray = [
+            TransactionStatus::STATUS_ERROR,
+            TransactionStatus::STATUS_PENDING,
+            TransactionStatus::STATUS_SUCCESS,
+            TransactionStatus::STATUS_RESUMED,
+        ];
+
+        if (!in_array($status, $validStatusArray, true)) {
+            throw new RuntimeException('Transaction status can not be set. Status is invalid for transaction.');
+        }
+    }
 }
diff --git a/vendor/unzerdev/php-sdk/src/Traits/HasTraceId.php b/vendor/unzerdev/php-sdk/src/Traits/HasTraceId.php
index 8f9ed8d..e8b223c 100644
--- a/vendor/unzerdev/php-sdk/src/Traits/HasTraceId.php
+++ b/vendor/unzerdev/php-sdk/src/Traits/HasTraceId.php
@@ -3,26 +3,10 @@
  * This trait adds the trace id to a class.
  * It can be sent to the support when a problem occurs.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Traits
  */
+
 namespace UnzerSDK\Traits;
 
 trait HasTraceId
@@ -30,8 +14,6 @@ trait HasTraceId
     /** @var string $traceId */
     private $traceId;
 
-    //<editor-fold desc="Getters/Setters">
-
     /**
      * @return string|null
      */
@@ -50,6 +32,4 @@ protected function setTraceId(string $traceId): self
         $this->traceId = $traceId;
         return $this;
     }
-
-    //</editor-fold>
 }
diff --git a/vendor/unzerdev/php-sdk/src/Traits/HasUniqueAndShortId.php b/vendor/unzerdev/php-sdk/src/Traits/HasUniqueAndShortId.php
index ad18256..5c58971 100644
--- a/vendor/unzerdev/php-sdk/src/Traits/HasUniqueAndShortId.php
+++ b/vendor/unzerdev/php-sdk/src/Traits/HasUniqueAndShortId.php
@@ -2,26 +2,10 @@
 /**
  * This trait adds the short id and unique id property to a class.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Traits
  */
+
 namespace UnzerSDK\Traits;
 
 trait HasUniqueAndShortId
@@ -32,8 +16,6 @@ trait HasUniqueAndShortId
     /** @var string $shortId */
     private $shortId;
 
-    //<editor-fold desc="Getters/Setters">
-
     /**
      * @return string|null
      */
@@ -71,6 +53,4 @@ protected function setShortId(string $shortId): self
         $this->shortId = $shortId;
         return $this;
     }
-
-    //</editor-fold>
 }
diff --git a/vendor/unzerdev/php-sdk/src/Traits/IsInvoiceType.php b/vendor/unzerdev/php-sdk/src/Traits/IsInvoiceType.php
index a240b8f..c0c6311 100644
--- a/vendor/unzerdev/php-sdk/src/Traits/IsInvoiceType.php
+++ b/vendor/unzerdev/php-sdk/src/Traits/IsInvoiceType.php
@@ -2,26 +2,10 @@
 /**
  * This trait adds means to determine whether the payment type is an invoice type.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Traits
  */
+
 namespace UnzerSDK\Traits;
 
 trait IsInvoiceType
diff --git a/vendor/unzerdev/php-sdk/src/Unzer.php b/vendor/unzerdev/php-sdk/src/Unzer.php
index 7fbe2b0..87240ff 100644
--- a/vendor/unzerdev/php-sdk/src/Unzer.php
+++ b/vendor/unzerdev/php-sdk/src/Unzer.php
@@ -1,45 +1,26 @@
 <?php
-/**
- * This is the Unzer object which is the base object providing all functionalities needed to
- * access the api.
- *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @link  https://docs.unzer.com/
- *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK
- */
+
 namespace UnzerSDK;
 
 use DateTime;
+use RuntimeException;
 use UnzerSDK\Adapter\HttpAdapterInterface;
 use UnzerSDK\Constants\CancelReasonCodes;
 use UnzerSDK\Interfaces\CancelServiceInterface;
 use UnzerSDK\Interfaces\DebugHandlerInterface;
-use UnzerSDK\Interfaces\UnzerParentInterface;
 use UnzerSDK\Interfaces\PaymentServiceInterface;
 use UnzerSDK\Interfaces\ResourceServiceInterface;
+use UnzerSDK\Interfaces\UnzerParentInterface;
 use UnzerSDK\Interfaces\WebhookServiceInterface;
 use UnzerSDK\Resources\AbstractUnzerResource;
 use UnzerSDK\Resources\Basket;
+use UnzerSDK\Resources\Config;
 use UnzerSDK\Resources\Customer;
+use UnzerSDK\Resources\EmbeddedResources\Paylater\InstallmentPlansQuery;
 use UnzerSDK\Resources\InstalmentPlans;
 use UnzerSDK\Resources\Keypair;
 use UnzerSDK\Resources\Metadata;
+use UnzerSDK\Resources\PaylaterInstallmentPlans;
 use UnzerSDK\Resources\Payment;
 use UnzerSDK\Resources\PaymentTypes\BasePaymentType;
 use UnzerSDK\Resources\PaymentTypes\Paypage;
@@ -47,6 +28,7 @@
 use UnzerSDK\Resources\TransactionTypes\Authorization;
 use UnzerSDK\Resources\TransactionTypes\Cancellation;
 use UnzerSDK\Resources\TransactionTypes\Charge;
+use UnzerSDK\Resources\TransactionTypes\Chargeback;
 use UnzerSDK\Resources\TransactionTypes\Payout;
 use UnzerSDK\Resources\TransactionTypes\Shipment;
 use UnzerSDK\Resources\Webhook;
@@ -56,21 +38,32 @@
 use UnzerSDK\Services\ResourceService;
 use UnzerSDK\Services\WebhookService;
 use UnzerSDK\Validators\PrivateKeyValidator;
-use RuntimeException;
 
-class Unzer implements UnzerParentInterface, PaymentServiceInterface, ResourceServiceInterface, WebhookServiceInterface, CancelServiceInterface
+/**
+ * This is the Unzer object which is the base object providing all functionalities needed to
+ * access the api.
+ */
+class Unzer implements
+    UnzerParentInterface,
+    PaymentServiceInterface,
+    ResourceServiceInterface,
+    WebhookServiceInterface,
+    CancelServiceInterface
 {
     public const BASE_URL = 'api.unzer.com';
     public const API_VERSION = 'v1';
     public const SDK_TYPE = 'UnzerPHP';
-    public const SDK_VERSION = '1.1.4.0';
+    public const SDK_VERSION = '3.5.0';
 
     /** @var string $key */
     private $key;
 
-    /** @var string $locale */
+    /** @var string|null $locale */
     private $locale;
 
+    /** @var string|null $clientIp */
+    private $clientIp;
+
     /** @var ResourceServiceInterface $resourceService */
     private $resourceService;
 
@@ -95,14 +88,15 @@ class Unzer implements UnzerParentInterface, PaymentServiceInterface, ResourceSe
     /**
      * Construct a new Unzer object.
      *
-     * @param string $key    The private key your received from your Unzer contact person.
-     * @param string $locale The locale of the customer defining defining the translation (e.g. 'en-GB' or 'de-DE').
-     *
-     * @link https://docs.unzer.com/integrate/web-integration/#section-localization-and-languages
+     * @param string  $key    The private key your received from your Unzer contact person.
+     * @param ?string $locale The locale of the customer defining defining the translation (e.g. 'en-GB' or 'de-DE').
      *
      * @throws RuntimeException A RuntimeException will be thrown if the key is not of type private.
+     *
+     *@link https://docs.unzer.com/integrate/web-integration/#section-localization-and-languages
+     *
      */
-    public function __construct($key, $locale = null)
+    public function __construct(string $key, ?string $locale = '')
     {
         $this->setKey($key);
         $this->setLocale($locale);
@@ -114,8 +108,6 @@ public function __construct($key, $locale = null)
         $this->httpService     = new HttpService();
     }
 
-    //<editor-fold desc="Getters/Setters">
-
     /**
      * Returns the set private key used to connect to the API.
      *
@@ -134,8 +126,10 @@ public function getKey(): string
      * @return Unzer This Unzer object.
      *
      * @throws RuntimeException Throws a RuntimeException when the key is invalid.
+     *
+     * @deprecated public access will be removed. Please create a new instance with a different keypair instead.
      */
-    public function setKey($key): Unzer
+    public function setKey(string $key): Unzer
     {
         if (!PrivateKeyValidator::validate($key)) {
             throw new RuntimeException('Illegal key: Use a valid private key with this SDK!');
@@ -146,7 +140,7 @@ public function setKey($key): Unzer
     }
 
     /**
-     * Returns the set customer locale.
+     * Returns the set customer locale. This will be set as a request header field.
      *
      * @return string|null The locale of the customer.
      *                     Refer to the documentation under https://docs.unzer.com for a list of supported values.
@@ -164,12 +158,37 @@ public function getLocale(): ?string
      *
      * @return Unzer This Unzer object.
      */
-    public function setLocale($locale): Unzer
+    public function setLocale(?string $locale): Unzer
     {
+        if ($locale === null) {
+            return $this;
+        }
+
         $this->locale = str_replace('_', '-', $locale);
         return $this;
     }
 
+    /**
+     * @return string|null
+     */
+    public function getClientIp(): ?string
+    {
+        return $this->clientIp;
+    }
+
+    /**
+     * Sets the clientIp. This will be set as a request header field.
+     *
+     * @param string|null $clientIp
+     *
+     * @return Unzer
+     */
+    public function setClientIp(?string $clientIp): Unzer
+    {
+        $this->clientIp = $clientIp;
+        return $this;
+    }
+
     /**
      * @param ResourceService $resourceService
      *
@@ -312,10 +331,6 @@ public function setHttpService(HttpService $httpService): Unzer
         return $this;
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="ParentIF">
-
     /**
      * Returns this Unzer instance.
      *
@@ -329,28 +344,26 @@ public function getUnzerObject(): Unzer
     /**
      * {@inheritDoc}
      */
-    public function getUri($appendId = true, $httpMethod = HttpAdapterInterface::REQUEST_GET): string
+    public function getUri(bool $appendId = true, string $httpMethod = HttpAdapterInterface::REQUEST_GET): string
     {
         return '';
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Resources">
-
-    //<editor-fold desc="Recurring">
-
     /**
      * {@inheritDoc}
      */
-    public function activateRecurringPayment($paymentType, $returnUrl, string $recurrenceType = null): Recurring
+    public function activateRecurringPayment($paymentType, string $returnUrl, string $recurrenceType = null): Recurring
     {
         return $this->resourceService->activateRecurringPayment($paymentType, $returnUrl, $recurrenceType);
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Payment resource">
+    /**
+     * {@inheritDoc}
+     */
+    public function fetchPayPage($payPage): Paypage
+    {
+        return $this->resourceService->fetchPayPage($payPage);
+    }
 
     /**
      * {@inheritDoc}
@@ -363,27 +376,19 @@ public function fetchPayment($payment): Payment
     /**
      * {@inheritDoc}
      */
-    public function fetchPaymentByOrderId($orderId): Payment
+    public function fetchPaymentByOrderId(string $orderId): Payment
     {
         return $this->resourceService->fetchPaymentByOrderId($orderId);
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Keypair resource">
-
     /**
      * {@inheritDoc}
      */
-    public function fetchKeypair($detailed = false): Keypair
+    public function fetchKeypair(bool $detailed = false): Keypair
     {
         return $this->resourceService->fetchKeypair($detailed);
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Metadata resource">
-
     /**
      * {@inheritDoc}
      */
@@ -400,10 +405,6 @@ public function fetchMetadata($metadata): Metadata
         return $this->resourceService->fetchMetadata($metadata);
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Basket resource">
-
     /**
      * {@inheritDoc}
      */
@@ -428,10 +429,6 @@ public function updateBasket(Basket $basket): Basket
         return $this->resourceService->updateBasket($basket);
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="PaymentType resource">
-
     /**
      * {@inheritDoc}
      */
@@ -451,15 +448,11 @@ public function updatePaymentType(BasePaymentType $paymentType): BasePaymentType
     /**
      * {@inheritDoc}
      */
-    public function fetchPaymentType($typeId): BasePaymentType
+    public function fetchPaymentType(string $typeId): BasePaymentType
     {
         return $this->resourceService->fetchPaymentType($typeId);
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Customer resource">
-
     /**
      * {@inheritDoc}
      */
@@ -487,7 +480,7 @@ public function fetchCustomer($customer): Customer
     /**
      * {@inheritDoc}
      */
-    public function fetchCustomerByExtCustomerId($customerId): Customer
+    public function fetchCustomerByExtCustomerId(string $customerId): Customer
     {
         return $this->resourceService->fetchCustomerByExtCustomerId($customerId);
     }
@@ -508,10 +501,6 @@ public function deleteCustomer($customer): void
         $this->resourceService->deleteCustomer($customer);
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Authorization resource">
-
     /**
      * {@inheritDoc}
      */
@@ -520,16 +509,12 @@ public function fetchAuthorization($payment): Authorization
         return $this->resourceService->fetchAuthorization($payment);
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Charge resource">
-
     /**
      * {@inheritDoc}
      */
-    public function fetchChargeById($paymentId, $chargeId): Charge
+    public function fetchChargeById($payment, string $chargeId): Charge
     {
-        return $this->resourceService->fetchChargeById($paymentId, $chargeId);
+        return $this->resourceService->fetchChargeById($payment, $chargeId);
     }
 
     /**
@@ -540,14 +525,23 @@ public function fetchCharge(Charge $charge): Charge
         return $this->resourceService->fetchCharge($charge);
     }
 
-    //</editor-fold>
+    /**
+     * {@inheritDoc}
+     */
+    public function fetchChargebackById(string $paymentId, string $charebackId, ?string $chargeId): Chargeback
+    {
+        return $this->resourceService->fetchChargebackById($paymentId, $charebackId, $chargeId);
+    }
 
-    //<editor-fold desc="Cancellation resource">
+    public function fetchChargeback(Chargeback $chargeback): Chargeback
+    {
+        return $this->resourceService->fetchResource($chargeback);
+    }
 
     /**
      * {@inheritDoc}
      */
-    public function fetchReversalByAuthorization($authorization, $cancellationId): Cancellation
+    public function fetchReversalByAuthorization(Authorization $authorization, string $cancellationId): Cancellation
     {
         return $this->resourceService->fetchReversalByAuthorization($authorization, $cancellationId);
     }
@@ -555,7 +549,7 @@ public function fetchReversalByAuthorization($authorization, $cancellationId): C
     /**
      * {@inheritDoc}
      */
-    public function fetchReversal($payment, $cancellationId): Cancellation
+    public function fetchReversal($payment, string $cancellationId): Cancellation
     {
         return $this->resourceService->fetchReversal($payment, $cancellationId);
     }
@@ -563,7 +557,7 @@ public function fetchReversal($payment, $cancellationId): Cancellation
     /**
      * {@inheritDoc}
      */
-    public function fetchRefundById($payment, $chargeId, $cancellationId): Cancellation
+    public function fetchRefundById($payment, string $chargeId, string $cancellationId): Cancellation
     {
         return $this->resourceService->fetchRefundById($payment, $chargeId, $cancellationId);
     }
@@ -571,27 +565,35 @@ public function fetchRefundById($payment, $chargeId, $cancellationId): Cancellat
     /**
      * {@inheritDoc}
      */
-    public function fetchRefund(Charge $charge, $cancellationId): Cancellation
+    public function fetchRefund(Charge $charge, string $cancellationId): Cancellation
     {
         return $this->resourceService->fetchRefund($charge, $cancellationId);
     }
 
-    //</editor-fold>
+    /**
+     * {@inheritDoc}
+     */
+    public function fetchPaymentRefund($payment, string $cancellationId): Cancellation
+    {
+        return $this->resourceService->fetchPaymentRefund($payment, $cancellationId);
+    }
 
-    //<editor-fold desc="Shipment resource">
+    /**
+     * {@inheritDoc}
+     */
+    public function fetchPaymentReversal($payment, string $cancellationId): Cancellation
+    {
+        return $this->resourceService->fetchPaymentReversal($payment, $cancellationId);
+    }
 
     /**
      * {@inheritDoc}
      */
-    public function fetchShipment($payment, $shipmentId): Shipment
+    public function fetchShipment($payment, string $shipmentId): Shipment
     {
         return $this->resourceService->fetchShipment($payment, $shipmentId);
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Payout resource">
-
     /**
      * {@inheritDoc}
      */
@@ -600,10 +602,6 @@ public function fetchPayout($payment): Payout
         return $this->resourceService->fetchPayout($payment);
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Webhook resource">
-
     /**
      * {@inheritDoc}
      */
@@ -623,7 +621,7 @@ public function fetchWebhook($webhook): Webhook
     /**
      * {@inheritDoc}
      */
-    public function updateWebhook($webhook): Webhook
+    public function updateWebhook(Webhook $webhook): Webhook
     {
         return $this->webhookService->updateWebhook($webhook);
     }
@@ -663,18 +661,28 @@ public function registerMultipleWebhooks(string $url, array $events): array
     /**
      * {@inheritDoc}
      */
-    public function fetchResourceFromEvent($eventJson = null): AbstractUnzerResource
+    public function fetchResourceFromEvent(string $eventJson = null): AbstractUnzerResource
     {
         return $this->webhookService->fetchResourceFromEvent($eventJson);
     }
 
-    //</editor-fold>
-
-    //</editor-fold>
-
-    //<editor-fold desc="Transactions">
+    /**
+     * {@inheritDoc}
+     */
+    public function performAuthorization(
+        Authorization $authorization,
+        $paymentType,
+        $customer = null,
+        Metadata $metadata = null,
+        Basket $basket = null
+    ): Authorization {
+        return $this->paymentService->performAuthorization($authorization, $paymentType, $customer, $metadata, $basket);
+    }
 
-    //<editor-fold desc="Authorize transactions">
+    public function updateAuthorization($payment, Authorization $authorization): Authorization
+    {
+        return $this->paymentService->updateAuthorization($payment, $authorization);
+    }
 
     /**
      * {@inheritDoc}
@@ -709,9 +717,23 @@ public function authorize(
         );
     }
 
-    //</editor-fold>
+    /**
+     * {@inheritDoc}
+     */
+    public function performCharge(
+        Charge $charge,
+        $paymentType,
+        $customer = null,
+        Metadata $metadata = null,
+        Basket $basket = null
+    ): Charge {
+        return $this->paymentService->performCharge($charge, $paymentType, $customer, $metadata, $basket);
+    }
 
-    //<editor-fold desc="Charge transactions">
+    public function updateCharge($payment, Charge $charge): Charge
+    {
+        return $this->paymentService->updateCharge($payment, $charge);
+    }
 
     /**
      * {@inheritDoc}
@@ -764,17 +786,16 @@ public function chargeAuthorization(
     public function chargePayment(
         $payment,
         float $amount = null,
-        string $currency = null,
         string $orderId = null,
         string $invoiceId = null
     ): Charge {
-        $paymentObject = $this->resourceService->getPaymentResource($payment);
-        return $this->paymentService->chargePayment($paymentObject, $amount, $currency, $orderId, $invoiceId);
+        return $this->paymentService->chargePayment($payment, $amount, $orderId, $invoiceId);
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Authorization Cancel/Reversal">
+    public function performChargeOnPayment($payment, Charge $charge): Charge
+    {
+        return $this->paymentService->performChargeOnPayment($payment, $charge);
+    }
 
     /**
      * {@inheritDoc}
@@ -792,17 +813,13 @@ public function cancelAuthorizationByPayment($payment, float $amount = null): Ca
         return $this->cancelService->cancelAuthorizationByPayment($payment, $amount);
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Payment Cancel">
-
     /**
      * {@inheritDoc}
      */
     public function cancelPayment(
         $payment,
         float $amount = null,
-        $reasonCode = CancelReasonCodes::REASON_CODE_CANCEL,
+        ?string $reasonCode = CancelReasonCodes::REASON_CODE_CANCEL,
         string $referenceText = null,
         float $amountNet = null,
         float $amountVat = null
@@ -819,10 +836,6 @@ public function cancelPaymentAuthorization($payment, float $amount = null): ?Can
         return $this->cancelService->cancelPaymentAuthorization($payment, $amount);
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Charge Cancel/Refund">
-
     /**
      * {@inheritDoc}
      */
@@ -854,9 +867,23 @@ public function cancelCharge(
             ->cancelCharge($charge, $amount, $reasonCode, $referenceText, $amountNet, $amountVat);
     }
 
-    //</editor-fold>
+    /**
+     * {@inheritDoc}
+     */
+    public function cancelAuthorizedPayment($payment, ?Cancellation $cancellation = null): Cancellation
+    {
+        return $this->cancelService
+            ->cancelAuthorizedPayment($payment, $cancellation);
+    }
 
-    //<editor-fold desc="Shipment transactions">
+    /**
+     * {@inheritDoc}
+     */
+    public function cancelChargedPayment($payment, ?Cancellation $cancellation = null): Cancellation
+    {
+        return $this->cancelService
+            ->cancelChargedPayment($payment, $cancellation);
+    }
 
     /**
      * {@inheritDoc}
@@ -866,24 +893,20 @@ public function ship($payment, string $invoiceId = null, string $orderId = null)
         return $this->paymentService->ship($payment, $invoiceId, $orderId);
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="Payout transactions">
-
     /**
      * {@inheritDoc}
      */
     public function payout(
-        $amount,
-        $currency,
+        float    $amount,
+        string   $currency,
         $paymentType,
-        $returnUrl,
+        string   $returnUrl,
         $customer = null,
-        $orderId = null,
-        $metadata = null,
-        $basket = null,
-        $invoiceId = null,
-        $referenceText = null
+        string   $orderId = null,
+        Metadata $metadata = null,
+        Basket   $basket = null,
+        string   $invoiceId = null,
+        string $referenceText = null
     ): Payout {
         return $this->paymentService->payout(
             $amount,
@@ -899,10 +922,6 @@ public function payout(
         );
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="PayPage">
-
     /**
      * {@inheritDoc}
      */
@@ -927,28 +946,33 @@ public function initPayPageAuthorize(
         return $this->paymentService->initPayPageAuthorize($paypage, $customer, $basket, $metadata);
     }
 
-    //</editor-fold>
-
-    //<editor-fold desc="HInstallment Secured">
-
     /**
      * {@inheritDoc}
      */
     public function fetchInstallmentPlans(
-        $amount,
-        $currency,
-        $effectiveInterest,
+        float    $amount,
+        string   $currency,
+        float    $effectiveInterest,
         DateTime $orderDate = null
     ): InstalmentPlans {
         return $this->paymentService
             ->fetchInstallmentPlans($amount, $currency, $effectiveInterest, $orderDate);
     }
 
-    //</editor-fold>
-
-    //</editor-fold>
+    public function fetchPaylaterInstallmentPlans(InstallmentPlansQuery $plansRequest): PaylaterInstallmentPlans
+    {
+        return $this->getPaymentService()->fetchPaylaterInstallmentPlans($plansRequest);
+    }
 
-    //<editor-fold desc="Helpers">
+    /**
+     * {@inheritDoc}
+     *
+     * @param Config|null $config
+     */
+    public function fetchConfig(BasePaymentType $paymentType, ?Config $config = null): Config
+    {
+        return $this->getResourceService()->fetchConfig($paymentType, $config);
+    }
 
     /**
      * Writes the given string to the registered debug handler if debug mode is enabled.
@@ -964,6 +988,4 @@ public function debugLog($message): void
             }
         }
     }
-
-    //</editor-fold>
 }
diff --git a/vendor/unzerdev/php-sdk/src/Validators/ExpiryDateValidator.php b/vendor/unzerdev/php-sdk/src/Validators/ExpiryDateValidator.php
index 67defba..50c2b53 100644
--- a/vendor/unzerdev/php-sdk/src/Validators/ExpiryDateValidator.php
+++ b/vendor/unzerdev/php-sdk/src/Validators/ExpiryDateValidator.php
@@ -1,29 +1,13 @@
 <?php
+
+namespace UnzerSDK\Validators;
+
 /**
  * This provides validation functions concerning expiry dates.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Validators
  */
-namespace UnzerSDK\Validators;
-
 class ExpiryDateValidator
 {
     /**
@@ -33,7 +17,7 @@ class ExpiryDateValidator
      *
      * @return bool
      */
-    public static function validate($expiryDate): bool
+    public static function validate(string $expiryDate): bool
     {
         return preg_match('/^(0[\d]|1[0-2]|[1-9])\/(\d{2}|\d{4})$/', $expiryDate);
     }
diff --git a/vendor/unzerdev/php-sdk/src/Validators/PrivateKeyValidator.php b/vendor/unzerdev/php-sdk/src/Validators/PrivateKeyValidator.php
index 092fb97..727a3bf 100644
--- a/vendor/unzerdev/php-sdk/src/Validators/PrivateKeyValidator.php
+++ b/vendor/unzerdev/php-sdk/src/Validators/PrivateKeyValidator.php
@@ -1,43 +1,30 @@
 <?php
+
+namespace UnzerSDK\Validators;
+
+use function count;
+
 /**
  * This provides validation functions concerning private key.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Validators
  */
-namespace UnzerSDK\Validators;
-
-use function count;
-
 class PrivateKeyValidator
 {
     /**
      * Returns true if the given private key has a valid format.
      *
-     * @param string $key
+     * @param string|null $key
      *
      * @return bool
      */
-    public static function validate($key): bool
+    public static function validate(?string $key): bool
     {
         $match = [];
+        if ($key === null) {
+            return false;
+        }
         preg_match('/^[sp]-priv-[a-zA-Z0-9]+/', $key, $match);
         return count($match) > 0;
     }
diff --git a/vendor/unzerdev/php-sdk/src/Validators/PublicKeyValidator.php b/vendor/unzerdev/php-sdk/src/Validators/PublicKeyValidator.php
index 35d8b57..1d4a89c 100644
--- a/vendor/unzerdev/php-sdk/src/Validators/PublicKeyValidator.php
+++ b/vendor/unzerdev/php-sdk/src/Validators/PublicKeyValidator.php
@@ -1,43 +1,30 @@
 <?php
+
+namespace UnzerSDK\Validators;
+
+use function count;
+
 /**
  * This provides validation functions concerning public key.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\Validators
  */
-namespace UnzerSDK\Validators;
-
-use function count;
-
 class PublicKeyValidator
 {
     /**
      * Returns true if the given public key has a valid format.
      *
-     * @param string $key
+     * @param string|null $key
      *
      * @return bool
      */
-    public static function validate($key): bool
+    public static function validate(?string $key): bool
     {
         $match = [];
+        if ($key === null) {
+            return false;
+        }
         preg_match('/^[sp]-pub-[a-zA-Z0-9]+/', $key, $match);
         return count($match) > 0;
     }
diff --git a/vendor/unzerdev/php-sdk/test/BaseIntegrationTest.php b/vendor/unzerdev/php-sdk/test/BaseIntegrationTest.php
index aa16f4c..b9d2263 100644
--- a/vendor/unzerdev/php-sdk/test/BaseIntegrationTest.php
+++ b/vendor/unzerdev/php-sdk/test/BaseIntegrationTest.php
@@ -1,32 +1,19 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class is the base class for all integration tests of this SDK.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\integration
  */
+
 namespace UnzerSDK\test;
 
-use UnzerSDK\Services\EnvironmentService;
+use UnzerSDK\Resources\PaymentTypes\PaylaterInvoice;
+use UnzerSDK\Resources\TransactionTypes\Authorization;
+use UnzerSDK\test\Helper\TestEnvironmentService;
 use PHPUnit\Runner\BaseTestRunner;
 
 class BaseIntegrationTest extends BasePaymentTest
@@ -36,7 +23,7 @@ class BaseIntegrationTest extends BasePaymentTest
      */
     protected function setUp(): void
     {
-        $this->getUnzerObject(EnvironmentService::getTestPrivateKey());
+        $this->getUnzerObject(TestEnvironmentService::getTestPrivateKey());
     }
 
     /**
@@ -56,4 +43,40 @@ protected function tearDown(): void
             echo "\n";
         }
     }
+
+    /** Creates a Paylater Invoice authorization transaction with an amount of 99.99€.
+     *
+     * @return Authorization
+     *
+     * @throws \UnzerSDK\Exceptions\UnzerApiException
+     */
+    protected function createPaylaterInvoiceAuthorization(): Authorization
+    {
+        $paylaterInvoice = $this->unzer->createPaymentType(new PaylaterInvoice());
+
+        $authorization = new Authorization(99.99, 'EUR', 'https://unzer.com');
+        $authorization->setInvoiceId('202205021237');
+
+        $customer = $this->getMaximumCustomerInclShippingAddress();
+        $basket = $this->createV2Basket();
+
+        $authorization = $this->unzer->performAuthorization($authorization, $paylaterInvoice, $customer, null, $basket);
+        return $authorization;
+    }
+
+    /**
+     * @return void
+     */
+    protected function useNon3dsKey(): void
+    {
+        $this->getUnzerObject()->setKey(TestEnvironmentService::getTestPrivateKey(true));
+    }
+
+    /**
+     * @return void
+     */
+    protected function useLegacyKey(): void
+    {
+        $this->getUnzerObject()->setKey(TestEnvironmentService::getLegacyTestPrivateKey());
+    }
 }
diff --git a/vendor/unzerdev/php-sdk/test/BasePaymentTest.php b/vendor/unzerdev/php-sdk/test/BasePaymentTest.php
index b6402a0..54da6b6 100644
--- a/vendor/unzerdev/php-sdk/test/BasePaymentTest.php
+++ b/vendor/unzerdev/php-sdk/test/BasePaymentTest.php
@@ -1,34 +1,20 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class is the base class for all tests of this SDK.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\integration
  */
+
 namespace UnzerSDK\test;
 
 use DateInterval;
 use DateTime;
-use UnzerSDK\Unzer;
+use PHPUnit\Framework\TestCase;
+use RuntimeException;
 use UnzerSDK\Resources\Basket;
 use UnzerSDK\Resources\EmbeddedResources\BasketItem;
 use UnzerSDK\Resources\Payment;
@@ -40,14 +26,13 @@
 use UnzerSDK\Resources\TransactionTypes\Authorization;
 use UnzerSDK\Resources\TransactionTypes\Charge;
 use UnzerSDK\test\Fixtures\CustomerFixtureTrait;
-use PHPUnit\Framework\TestCase;
-use RuntimeException;
+use UnzerSDK\Unzer;
 
 class BasePaymentTest extends TestCase
 {
-    protected const RETURN_URL = 'https://dev.unzer.com';
-
     use CustomerFixtureTrait;
+    protected const RETURN_URL = 'https://dev.unzer.com';
+    public const API_VERSION_2 = 'v2';
 
     /** @var Unzer $unzer */
     protected $unzer;
@@ -199,6 +184,28 @@ public function createBasket(): Basket
         return $basket;
     }
 
+    /**
+     * Creates a v2 Basket resource and returns it.
+     *
+     * @return Basket
+     */
+    public function createV2Basket(): Basket
+    {
+        $orderId = 'b' . self::generateRandomId();
+        $basket = new Basket($orderId);
+        $basket->setTotalValueGross(99.99)
+            ->setCurrencyCode('EUR');
+
+        $basketItem = (new BasketItem())
+            ->setAmountPerUnitGross(99.99)
+            ->setQuantity(1)
+            ->setBasketItemReferenceId('item1')
+            ->setTitle('title');
+        $basket->addBasketItem($basketItem);
+        $this->unzer->createBasket($basket);
+        return $basket;
+    }
+
     /**
      * Creates a Card object for tests.
      *
@@ -206,7 +213,7 @@ public function createBasket(): Basket
      *
      * @return Card
      */
-    protected function createCardObject(string $cardNumber = '5453010000059543'): Card
+    protected function createCardObject(string $cardNumber = '4711100000000000'): Card
     {
         $expiryDate = $this->getNextYearsTimestamp()->format('m/Y');
         $card = new Card($cardNumber, $expiryDate);
diff --git a/vendor/unzerdev/php-sdk/test/Fixtures/CustomerFixtureTrait.php b/vendor/unzerdev/php-sdk/test/Fixtures/CustomerFixtureTrait.php
index feef91d..6055e81 100644
--- a/vendor/unzerdev/php-sdk/test/Fixtures/CustomerFixtureTrait.php
+++ b/vendor/unzerdev/php-sdk/test/Fixtures/CustomerFixtureTrait.php
@@ -1,36 +1,24 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This trait adds customer fixtures to test classes.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\Fixtures
  */
+
 namespace UnzerSDK\test\Fixtures;
 
 use UnzerSDK\Constants\CompanyCommercialSectorItems;
+use UnzerSDK\Constants\CompanyTypes;
 use UnzerSDK\Constants\Salutations;
+use UnzerSDK\Constants\ShippingTypes;
 use UnzerSDK\Resources\Customer;
 use UnzerSDK\Resources\CustomerFactory;
 use UnzerSDK\Resources\EmbeddedResources\Address;
+use UnzerSDK\Resources\EmbeddedResources\CompanyOwner;
 
 trait CustomerFixtureTrait
 {
@@ -97,12 +85,23 @@ public function getMinimalNotRegisteredB2bCustomer(): Customer
      */
     public function getMaximalNotRegisteredB2bCustomer(): Customer
     {
-        return $this->getMinimalNotRegisteredB2bCustomer()
+        $customer = $this->getMinimalNotRegisteredB2bCustomer()
             ->setShippingAddress($this->getShippingAddress())
             ->setSalutation(Salutations::MR)
             ->setMobile('+49172123456')
             ->setPhone('+4962216471100')
             ->setBillingAddress($this->getBillingAddress());
+
+        $owner = (new CompanyOwner())
+            ->setFirstname('firstname')
+            ->setLastname('lastname')
+            ->setBirthdate('1999-01-01');
+
+        $customer->getCompanyInfo()
+            ->setOwner($owner)
+            ->setCompanyType(CompanyTypes::COMPANY);
+
+        return $customer;
     }
 
     /**
@@ -122,12 +121,23 @@ public function getMinimalRegisteredB2bCustomer(): Customer
      */
     public function getMaximalRegisteredB2bCustomer(): Customer
     {
-        return $this->getMinimalRegisteredB2bCustomer()
+        $customer = $this->getMinimalRegisteredB2bCustomer()
             ->setShippingAddress($this->getShippingAddress())
             ->setSalutation(Salutations::MR)
             ->setMobile('+49172123456')
             ->setPhone('+4962216471100')
             ->setBillingAddress($this->getBillingAddress());
+
+        $owner = (new CompanyOwner())
+            ->setFirstname('firstname')
+            ->setLastname('lastname')
+            ->setBirthdate('1999-01-01');
+
+        $customer->getCompanyInfo()
+            ->setOwner($owner)
+            ->setCompanyType(CompanyTypes::COMPANY);
+
+        return $customer;
     }
 
     /**
@@ -159,6 +169,7 @@ public function getShippingAddress(): Address
             ->setZip('60386')
             ->setCity('Frankfurt am Main')
             ->setCountry('DE')
-            ->setState('DE-BO');
+            ->setState('DE-BO')
+            ->setShippingType(ShippingTypes::EQUALS_BILLING);
     }
 }
diff --git a/vendor/unzerdev/php-sdk/test/Fixtures/JsonProvider.php b/vendor/unzerdev/php-sdk/test/Fixtures/JsonProvider.php
new file mode 100644
index 0000000..e360d77
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/test/Fixtures/JsonProvider.php
@@ -0,0 +1,29 @@
+<?php
+/*
+ *  Provide Json strings to for unit tests.
+ *
+ *  @link  https://docs.unzer.com/
+ *
+ */
+
+namespace UnzerSDK\test\Fixtures;
+
+class JsonProvider
+{
+    private static string $baseDir = __DIR__ . '/jsonData/';
+
+    /**
+     * @throws \Exception
+     */
+    public static function getJsonFromFile(string $path): string
+    {
+        $filepath = self::$baseDir . $path;
+        $filepath = str_replace(['/'], DIRECTORY_SEPARATOR, $filepath);
+
+        if (file_exists($filepath)) {
+            return file_get_contents($filepath);
+        }
+
+        throw new \Exception('File could not be read.');
+    }
+}
diff --git a/vendor/unzerdev/php-sdk/test/Fixtures/jsonData/chargeback.json b/vendor/unzerdev/php-sdk/test/Fixtures/jsonData/chargeback.json
new file mode 100644
index 0000000..f288758
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/test/Fixtures/jsonData/chargeback.json
@@ -0,0 +1,33 @@
+{
+  "id": "s-cbk-1",
+  "isSuccess": true,
+  "isPending": false,
+  "isResumed": false,
+  "isError": false,
+  "card3ds": true,
+  "redirectUrl": "",
+  "message": {
+    "code": "COR.000.100.200",
+    "merchant": "Transaction succeeded",
+    "customer": "Your payments have been successfully processed."
+  },
+  "amount": "119.0000",
+  "currency": "EUR",
+  "date": "2023-02-28 08:00:00",
+  "resources": {
+    "customerId": "",
+    "paymentId": "s-pay-123",
+    "basketId": "",
+    "metadataId": "",
+    "payPageId": "",
+    "traceId": "trace-123",
+    "typeId": "s-crd-123"
+  },
+  "paymentReference": "",
+  "processing": {
+    "uniqueId": "31HA0xyz",
+    "shortId": "1234.1234.1234",
+    "3dsEci": "3DS_SUCCESS",
+    "traceId": "trace-123"
+  }
+}
\ No newline at end of file
diff --git a/vendor/unzerdev/php-sdk/test/Fixtures/jsonData/googlePay/createRequest.json b/vendor/unzerdev/php-sdk/test/Fixtures/jsonData/googlePay/createRequest.json
new file mode 100644
index 0000000..f381410
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/test/Fixtures/jsonData/googlePay/createRequest.json
@@ -0,0 +1,18 @@
+{
+  "protocolVersion": "ECv2",
+  "signature": "signature-xyz\u003d",
+  "intermediateSigningKey": {
+    "signedKey": {
+      "keyExpiration": "1542394027316",
+      "keyValue": "key-value-xyz\\u003d\\u003d\"}"
+    },
+    "signatures": [
+      "signature1"
+    ]
+  },
+  "signedMessage": {
+    "tag": "001 Cryptogram 3ds",
+    "ephemeralPublicKey": "ephemeralPublicKey-xyz\\u003d\"",
+    "encryptedMessage": "encryptedMessage-xyz\""
+  }
+}
\ No newline at end of file
diff --git a/vendor/unzerdev/php-sdk/test/Fixtures/jsonData/googlePay/fetchResponse.json b/vendor/unzerdev/php-sdk/test/Fixtures/jsonData/googlePay/fetchResponse.json
new file mode 100644
index 0000000..f23d9c0
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/test/Fixtures/jsonData/googlePay/fetchResponse.json
@@ -0,0 +1,16 @@
+{
+  "id": "s-gop-q0nucec6itwe",
+  "method": "card",
+  "recurring": false,
+  "geoLocation": {
+    "clientIp": "0:0:0:0:0:0:0:1",
+    "countryIsoA2": ""
+  },
+  "number": "518834******0003",
+  "expiryDate": "10/2025",
+  "processing": {
+    "uniqueId": "31HA07BC8127DC45EE6946C3B070FF71",
+    "shortId": "5550.0369.6888",
+    "traceId": "24c0a2ecbe3d54a838c76444d4bdcd1f"
+  }
+}
\ No newline at end of file
diff --git a/vendor/unzerdev/php-sdk/test/Fixtures/jsonData/googlePay/googlepayToken.json b/vendor/unzerdev/php-sdk/test/Fixtures/jsonData/googlePay/googlepayToken.json
new file mode 100644
index 0000000..e69de29
diff --git a/vendor/unzerdev/php-sdk/test/Fixtures/jsonData/paylaterPlansResponse.json b/vendor/unzerdev/php-sdk/test/Fixtures/jsonData/paylaterPlansResponse.json
new file mode 100644
index 0000000..15f99b5
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/test/Fixtures/jsonData/paylaterPlansResponse.json
@@ -0,0 +1,277 @@
+{
+  "id": "Tx-xyz",
+  "amount": "99.99",
+  "currency": "EUR",
+  "plans": [
+    {
+      "numberOfRates": 3,
+      "totalAmount": "101.31",
+      "nominalInterestRate": 9.95,
+      "effectiveInterestRate": 10.43,
+      "minimumInstallmentFee": "0.00",
+      "secciUrl": "https://test-payment.paylater.unzer.com/payolution-payment/infoport/creditagreementdraft/Tx-xyz?duration=3",
+      "installmentRates": [
+        {
+          "date": "2023-06-20",
+          "rate": "33.77"
+        },
+        {
+          "date": "2023-07-20",
+          "rate": "33.77"
+        },
+        {
+          "date": "2023-08-20",
+          "rate": "33.77"
+        }
+      ]
+    },
+    {
+      "numberOfRates": 6,
+      "totalAmount": "102.60",
+      "nominalInterestRate": 9.95,
+      "effectiveInterestRate": 10.53,
+      "minimumInstallmentFee": "0.00",
+      "secciUrl": "https://test-payment.paylater.unzer.com/payolution-payment/infoport/creditagreementdraft/Tx-xyz?duration=6",
+      "installmentRates": [
+        {
+          "date": "2023-06-20",
+          "rate": "17.10"
+        },
+        {
+          "date": "2023-07-20",
+          "rate": "17.10"
+        },
+        {
+          "date": "2023-08-20",
+          "rate": "17.10"
+        },
+        {
+          "date": "2023-09-20",
+          "rate": "17.10"
+        },
+        {
+          "date": "2023-10-20",
+          "rate": "17.10"
+        },
+        {
+          "date": "2023-11-20",
+          "rate": "17.10"
+        }
+      ]
+    },
+    {
+      "numberOfRates": 9,
+      "totalAmount": "103.86",
+      "nominalInterestRate": 9.95,
+      "effectiveInterestRate": 10.46,
+      "minimumInstallmentFee": "0.00",
+      "secciUrl": "https://test-payment.paylater.unzer.com/payolution-payment/infoport/creditagreementdraft/Tx-xyz?duration=9",
+      "installmentRates": [
+        {
+          "date": "2023-06-20",
+          "rate": "11.54"
+        },
+        {
+          "date": "2023-07-20",
+          "rate": "11.54"
+        },
+        {
+          "date": "2023-08-20",
+          "rate": "11.54"
+        },
+        {
+          "date": "2023-09-20",
+          "rate": "11.54"
+        },
+        {
+          "date": "2023-10-20",
+          "rate": "11.54"
+        },
+        {
+          "date": "2023-11-20",
+          "rate": "11.54"
+        },
+        {
+          "date": "2023-12-20",
+          "rate": "11.54"
+        },
+        {
+          "date": "2024-01-20",
+          "rate": "11.54"
+        },
+        {
+          "date": "2024-02-20",
+          "rate": "11.54"
+        }
+      ]
+    },
+    {
+      "numberOfRates": 12,
+      "totalAmount": "105.12",
+      "nominalInterestRate": 9.95,
+      "effectiveInterestRate": 10.41,
+      "minimumInstallmentFee": "0.00",
+      "secciUrl": "https://test-payment.paylater.unzer.com/payolution-payment/infoport/creditagreementdraft/Tx-xyz?duration=12",
+      "installmentRates": [
+        {
+          "date": "2023-06-20",
+          "rate": "8.76"
+        },
+        {
+          "date": "2023-07-20",
+          "rate": "8.76"
+        },
+        {
+          "date": "2023-08-20",
+          "rate": "8.76"
+        },
+        {
+          "date": "2023-09-20",
+          "rate": "8.76"
+        },
+        {
+          "date": "2023-10-20",
+          "rate": "8.76"
+        },
+        {
+          "date": "2023-11-20",
+          "rate": "8.76"
+        },
+        {
+          "date": "2023-12-20",
+          "rate": "8.76"
+        },
+        {
+          "date": "2024-01-20",
+          "rate": "8.76"
+        },
+        {
+          "date": "2024-02-20",
+          "rate": "8.76"
+        },
+        {
+          "date": "2024-03-20",
+          "rate": "8.76"
+        },
+        {
+          "date": "2024-04-20",
+          "rate": "8.76"
+        },
+        {
+          "date": "2024-05-20",
+          "rate": "8.76"
+        }
+      ]
+    },
+    {
+      "numberOfRates": 24,
+      "totalAmount": "110.40",
+      "nominalInterestRate": 9.95,
+      "effectiveInterestRate": 10.48,
+      "minimumInstallmentFee": "0.00",
+      "secciUrl": "https://test-payment.paylater.unzer.com/payolution-payment/infoport/creditagreementdraft/Tx-xyz?duration=24",
+      "installmentRates": [
+        {
+          "date": "2023-06-20",
+          "rate": "4.60"
+        },
+        {
+          "date": "2023-07-20",
+          "rate": "4.60"
+        },
+        {
+          "date": "2023-08-20",
+          "rate": "4.60"
+        },
+        {
+          "date": "2023-09-20",
+          "rate": "4.60"
+        },
+        {
+          "date": "2023-10-20",
+          "rate": "4.60"
+        },
+        {
+          "date": "2023-11-20",
+          "rate": "4.60"
+        },
+        {
+          "date": "2023-12-20",
+          "rate": "4.60"
+        },
+        {
+          "date": "2024-01-20",
+          "rate": "4.60"
+        },
+        {
+          "date": "2024-02-20",
+          "rate": "4.60"
+        },
+        {
+          "date": "2024-03-20",
+          "rate": "4.60"
+        },
+        {
+          "date": "2024-04-20",
+          "rate": "4.60"
+        },
+        {
+          "date": "2024-05-20",
+          "rate": "4.60"
+        },
+        {
+          "date": "2024-06-20",
+          "rate": "4.60"
+        },
+        {
+          "date": "2024-07-20",
+          "rate": "4.60"
+        },
+        {
+          "date": "2024-08-20",
+          "rate": "4.60"
+        },
+        {
+          "date": "2024-09-20",
+          "rate": "4.60"
+        },
+        {
+          "date": "2024-10-20",
+          "rate": "4.60"
+        },
+        {
+          "date": "2024-11-20",
+          "rate": "4.60"
+        },
+        {
+          "date": "2024-12-20",
+          "rate": "4.60"
+        },
+        {
+          "date": "2025-01-20",
+          "rate": "4.60"
+        },
+        {
+          "date": "2025-02-20",
+          "rate": "4.60"
+        },
+        {
+          "date": "2025-03-20",
+          "rate": "4.60"
+        },
+        {
+          "date": "2025-04-20",
+          "rate": "4.60"
+        },
+        {
+          "date": "2025-05-20",
+          "rate": "4.60"
+        }
+      ]
+    }
+  ],
+  "isSuccess": true,
+  "isPending": false,
+  "isResumed": false,
+  "isError": false
+}
\ No newline at end of file
diff --git a/vendor/unzerdev/php-sdk/test/Fixtures/jsonData/paymentWithDirectChargeback.json b/vendor/unzerdev/php-sdk/test/Fixtures/jsonData/paymentWithDirectChargeback.json
new file mode 100644
index 0000000..50ebefc
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/test/Fixtures/jsonData/paymentWithDirectChargeback.json
@@ -0,0 +1,60 @@
+{
+  "id": "s-pay-123",
+  "state": {
+    "id": 5,
+    "name": "chargeback"
+  },
+  "amount": {
+    "total": "1.0000",
+    "charged": "0.0000",
+    "canceled": "1.0000",
+    "remaining": "0.0000"
+  },
+  "currency": "EUR",
+  "resources": {
+    "customerId": "",
+    "paymentId": "s-pay-329982",
+    "basketId": "",
+    "metadataId": "",
+    "payPageId": "",
+    "traceId": "9a4f1fb372ac7f3cab9d0d8d8c72de59",
+    "typeId": "s-crd-0j6eclklhsy2"
+  },
+  "transactions": [
+    {
+      "date": "2023-08-01 13:37:21",
+      "type": "authorize",
+      "status": "success",
+      "url": "https://api.unzer.com/v1/payments/s-pay-123/authorize/s-aut-1",
+      "amount": "1.0000"
+    },
+    {
+      "date": "2023-08-01 13:56:05",
+      "type": "charge",
+      "status": "success",
+      "url": "https://api.unzer.com/v1/payments/s-pay-123/charges/s-chg-1",
+      "amount": "0.5000"
+    },
+    {
+      "date": "2023-08-01 13:56:05",
+      "type": "charge",
+      "status": "success",
+      "url": "https://api.unzer.com/v1/payments/s-pay-123/charges/s-chg-2",
+      "amount": "0.5000"
+    },
+    {
+      "date": "2023-08-01 13:57:15",
+      "type": "chargeback",
+      "status": "success",
+      "url": "https://api.unzer.com/v1/payments/s-pay-123/charges/chargebacks/s-cbk-1",
+      "amount": "0.5000"
+    },
+    {
+      "date": "2023-08-01 13:57:36",
+      "type": "chargeback",
+      "status": "success",
+      "url": "https://api.unzer.com/v1/payments/s-pay-123/charges/chargebacks/s-cbk-2",
+      "amount": "0.5000"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/vendor/unzerdev/php-sdk/test/Fixtures/jsonData/paymentWithMultipleChargebacks.json b/vendor/unzerdev/php-sdk/test/Fixtures/jsonData/paymentWithMultipleChargebacks.json
new file mode 100644
index 0000000..ff5b702
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/test/Fixtures/jsonData/paymentWithMultipleChargebacks.json
@@ -0,0 +1,51 @@
+{
+  "id": "s-pay-123",
+  "state": {
+    "id": 5,
+    "name": "chargeback"
+  },
+  "amount": {
+    "total": "1.0000",
+    "charged": "0.0000",
+    "canceled": "1.0000",
+    "remaining": "0.0000"
+  },
+  "currency": "EUR",
+  "transactions": [
+    {
+      "date": "2023-08-01 13:37:21",
+      "type": "authorize",
+      "status": "success",
+      "url": "https://api.unzer.com/v1/payments/s-pay-123/authorize/s-aut-1",
+      "amount": "1.0000"
+    },
+    {
+      "date": "2023-08-01 13:56:05",
+      "type": "charge",
+      "status": "success",
+      "url": "https://api.unzer.com/v1/payments/s-pay-123/charges/s-chg-1",
+      "amount": "0.5000"
+    },
+    {
+      "date": "2023-08-01 13:56:05",
+      "type": "charge",
+      "status": "success",
+      "url": "https://api.unzer.com/v1/payments/s-pay-123/charges/s-chg-2",
+      "amount": "0.5000"
+    },
+    {
+      "date": "2023-08-01 13:57:15",
+      "type": "chargeback",
+      "status": "success",
+      "url": "https://api.unzer.com/v1/payments/s-pay-123/charges/s-chg-1/chargebacks/s-cbk-1",
+      "amount": "0.5000"
+    },
+    {
+      "date": "2023-08-01 13:57:36",
+      "type": "chargeback",
+      "status": "success",
+      "url": "https://api.unzer.com/v1/payments/s-pay-123/charges/s-chg-2/chargebacks/s-cbk-1",
+      "amount": "0.5000"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/vendor/unzerdev/php-sdk/test/Fixtures/jsonData/sofortResponseWithIban.json b/vendor/unzerdev/php-sdk/test/Fixtures/jsonData/sofortResponseWithIban.json
new file mode 100644
index 0000000..5ddb271
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/test/Fixtures/jsonData/sofortResponseWithIban.json
@@ -0,0 +1,12 @@
+{
+  "id": "s-sft-123",
+  "method": "sofort",
+  "recurring": false,
+  "geoLocation": {
+    "clientIp": "111.111.111.111",
+    "countryIsoA2": "DE"
+  },
+  "iban": "DE-IBAN",
+  "bic": "test-bin",
+  "holder": "holder"
+}
\ No newline at end of file
diff --git a/vendor/unzerdev/php-sdk/test/Helper/TestEnvironmentService.php b/vendor/unzerdev/php-sdk/test/Helper/TestEnvironmentService.php
new file mode 100644
index 0000000..755eaa5
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/test/Helper/TestEnvironmentService.php
@@ -0,0 +1,109 @@
+<?php
+/*
+ *  Helper class to manage environment variables for testing.
+ *
+ *  @link  https://docs.unzer.com/
+ *
+ */
+
+namespace UnzerSDK\test\Helper;
+
+use UnzerSDK\Services\EnvironmentService;
+
+class TestEnvironmentService extends EnvironmentService
+{
+    /** Primary testing Keypair used as default for most payment types. */
+    public const ENV_VAR_TEST_PRIVATE_KEY_DEFAULT = 'UNZER_PAPI_TEST_PRIVATE_KEY_DEFAULT';
+    public const ENV_VAR_TEST_PUBLIC_KEY_DEFAULT = 'UNZER_PAPI_TEST_PUBLIC_KEY_DEFAULT';
+
+    /** Secondary keypair mainly used for payment methods that need a second configuration to be tested. */
+    public const ENV_VAR_TEST_PRIVATE_KEY_ALTERNATIVE = 'UNZER_PAPI_TEST_PRIVATE_KEY_ALTERNATIVE';
+    public const ENV_VAR_TEST_PUBLIC_KEY_ALTERNATIVE = 'UNZER_PAPI_TEST_PUBLIC_KEY_ALTERNATIVE';
+
+    /** Third keypair mainly used for deprecated payment methods. */
+    public const ENV_VAR_TEST_PRIVATE_KEY_LEGACY = 'UNZER_PAPI_TEST_PRIVATE_KEY_LEGACY';
+    public const ENV_VAR_TEST_PUBLIC_KEY_LEGACY = 'UNZER_PAPI_TEST_PUBLIC_KEY_LEGACY';
+
+    public const ENV_VAR_TEST_APPLE_MERCHANT_ID_FOLDER = 'UNZER_APPLE_MERCHANT_ID_PATH';
+    public const ENV_VAR_TEST_APPLE_CA_CERTIFICATE = 'UNZER_APPLE_CA_CERTIFICATE_PATH';
+    public const ENV_VAR_NAME_VERBOSE_TEST_LOGGING = 'UNZER_PAPI_VERBOSE_TEST_LOGGING';
+
+    /**
+     * Returns the CA certificate path set via environment variable.
+     *
+     * @return string
+     */
+    public static function getAppleCaCertificatePath(): string
+    {
+        return stripslashes($_SERVER[self::ENV_VAR_TEST_APPLE_CA_CERTIFICATE] ?? '');
+    }
+
+    /**
+     * Returns the path to apple merchant ID folder set via environment variable.
+     *
+     * @return string
+     */
+    public static function getAppleMerchantIdPath(): string
+    {
+        return stripslashes($_SERVER[self::ENV_VAR_TEST_APPLE_MERCHANT_ID_FOLDER] ?? '');
+    }
+
+    /**
+     * Returns false if the logging in tests is deactivated by environment variable.
+     *
+     * @return bool
+     */
+    public static function isTestLoggingActive(): bool
+    {
+        return EnvironmentService::getBoolEnvValue(self::ENV_VAR_NAME_VERBOSE_TEST_LOGGING);
+    }
+
+    /**
+     * Returns the public key string set via environment variable.
+     * Returns the non 3ds version of the key if the non3ds flag is set.
+     * Returns an empty string if the environment variable is not set.
+     *
+     * @param bool $non3ds
+     *
+     * @return string
+     */
+    public static function getTestPublicKey(bool $non3ds = false): string
+    {
+        $variableName = $non3ds ? self::ENV_VAR_TEST_PUBLIC_KEY_ALTERNATIVE : self::ENV_VAR_TEST_PUBLIC_KEY_DEFAULT;
+        $key = stripslashes($_SERVER[$variableName] ?? '');
+        return empty($key) ? '' : $key;
+    }
+
+    /**
+     * Returns the public key containing legacy payment methods.
+     *
+     * @param bool $non3ds
+     *
+     * @return string
+     */
+    public static function getLegacyTestPublicKey(): string
+    {
+        return stripslashes($_SERVER[self::ENV_VAR_TEST_PUBLIC_KEY_LEGACY] ?? '');
+    }
+
+    /**
+     * Returns the private key string set via environment variable.
+     * Returns the non 3ds version of the key if the non3ds flag is set.
+     * Returns an empty string if the environment variable is not set.
+     *
+     * @param bool $non3ds
+     *
+     * @return string
+     */
+    public static function getTestPrivateKey(bool $non3ds = false): string
+    {
+        $variableName = $non3ds ? self::ENV_VAR_TEST_PRIVATE_KEY_ALTERNATIVE : self::ENV_VAR_TEST_PRIVATE_KEY_DEFAULT;
+        $key = stripslashes($_SERVER[$variableName] ?? '');
+        return empty($key) ? '' : $key;
+    }
+
+    public static function getLegacyTestPrivateKey(): string
+    {
+        return stripslashes($_SERVER[self::ENV_VAR_TEST_PRIVATE_KEY_LEGACY] ?? '');
+    }
+}
diff --git a/vendor/unzerdev/php-sdk/test/TestDebugHandler.php b/vendor/unzerdev/php-sdk/test/TestDebugHandler.php
index 3b44371..5f14878 100644
--- a/vendor/unzerdev/php-sdk/test/TestDebugHandler.php
+++ b/vendor/unzerdev/php-sdk/test/TestDebugHandler.php
@@ -1,33 +1,17 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This custom debug handler will echo out debug messages.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\integration
  */
+
 namespace UnzerSDK\test;
 
 use UnzerSDK\Interfaces\DebugHandlerInterface;
-use UnzerSDK\Services\EnvironmentService;
 
 class TestDebugHandler implements DebugHandlerInterface
 {
@@ -41,7 +25,7 @@ public function log(string $message): void
     {
         $logMessage = 'Unzer debug message: ' . $message . "\n";
 
-        if (EnvironmentService::isTestLoggingActive()) {
+        if (Helper\TestEnvironmentService::isTestLoggingActive()) {
             // Echo log messages directly.
             echo $logMessage;
         } else {
diff --git a/vendor/unzerdev/php-sdk/test/bootstrap.php b/vendor/unzerdev/php-sdk/test/bootstrap.php
index 284db20..fe98846 100644
--- a/vendor/unzerdev/php-sdk/test/bootstrap.php
+++ b/vendor/unzerdev/php-sdk/test/bootstrap.php
@@ -1,27 +1,11 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This file is used to bootstrap the unit/integration tests in this project.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\tests
  */
 require_once __DIR__ . '/../vendor/autoload.php';
diff --git a/vendor/unzerdev/php-sdk/test/integration/ApplepayAdapterTest.php b/vendor/unzerdev/php-sdk/test/integration/ApplepayAdapterTest.php
index 323f3ba..f241704 100644
--- a/vendor/unzerdev/php-sdk/test/integration/ApplepayAdapterTest.php
+++ b/vendor/unzerdev/php-sdk/test/integration/ApplepayAdapterTest.php
@@ -2,26 +2,8 @@
 /*
  *  Test class for applepay adapter
  *
- *  Copyright (C) 2021 - today Unzer E-Com GmbH
- *
- *  Licensed under the Apache License, Version 2.0 (the "License");
- *  you may not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS,
- *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- *
  *  @link  https://docs.unzer.com/
  *
- *  @author  David Owusu <development@unzer.com>
- *
- *  @package  UnzerSDK
- *
  */
 
 namespace UnzerSDK\test\integration;
@@ -29,8 +11,8 @@
 use UnzerSDK\Adapter\ApplepayAdapter;
 use UnzerSDK\Exceptions\ApplepayMerchantValidationException;
 use UnzerSDK\Resources\ExternalResources\ApplepaySession;
-use UnzerSDK\Services\EnvironmentService;
 use UnzerSDK\test\BaseIntegrationTest;
+use UnzerSDK\test\Helper\TestEnvironmentService;
 
 class ApplepayAdapterTest extends BaseIntegrationTest
 {
@@ -52,11 +34,12 @@ protected function setUp(): void
     {
         $this->merchantValidationUrl = 'https://apple-pay-gateway-cert.apple.com/paymentservices/startSession';
 
-        $appleMerchantIdPath = EnvironmentService::getAppleMerchantIdPath();
-        $this->applepayCertPath = $appleMerchantIdPath . 'merchant_id.pem';
-        $this->applepayKeyPath = $appleMerchantIdPath . 'merchant_id.key';
-        $this->applepayCombinedCertPath = $appleMerchantIdPath . 'apple-pay-cert.pem';
-        $this->appleCaCertificatePath = EnvironmentService::getAppleCaCertificatePath();
+        $appleMerchantIdPath = TestEnvironmentService::getAppleMerchantIdPath();
+
+        $this->applepayCertPath = $this->createFilePath($appleMerchantIdPath, 'merchant_id.pem');
+        $this->applepayKeyPath = $this->createFilePath($appleMerchantIdPath, 'merchant_id.key');
+        $this->applepayCombinedCertPath = $this->createFilePath($appleMerchantIdPath, 'apple-pay-cert.pem');
+        $this->appleCaCertificatePath = TestEnvironmentService::getAppleCaCertificatePath();
     }
 
     /**
@@ -196,6 +179,7 @@ public function merchantValidationThrowsErrorForInvalidDomain(): void
      * test merchant validation request without ca certificate.
      *
      * @dataProvider domainShouldBeValidatedCorrectlyDP
+     *
      * @test
      *
      * @param mixed $validationUrl
@@ -224,4 +208,16 @@ public function domainShouldBeValidatedCorrectlyDP(): array
             'invalid: (empty)' => ['', false],
         ];
     }
+
+    /**
+     * @param string $appleMerchantIdPath
+     * @param string $merchantIdFile
+     *
+     * @return string
+     */
+    protected function createFilePath(string $appleMerchantIdPath, string $merchantIdFile): string
+    {
+        $separator = DIRECTORY_SEPARATOR;
+        return rtrim($appleMerchantIdPath, $separator) . $separator . $merchantIdFile;
+    }
 }
diff --git a/vendor/unzerdev/php-sdk/test/integration/BasketTest.php b/vendor/unzerdev/php-sdk/test/integration/BasketTest.php
index b9ed4cb..b1d7103 100644
--- a/vendor/unzerdev/php-sdk/test/integration/BasketTest.php
+++ b/vendor/unzerdev/php-sdk/test/integration/BasketTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines integration tests to verify Basket functionalities.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\integration
  */
+
 namespace UnzerSDK\test\integration;
 
 use UnzerSDK\Constants\ApiResponseCodes;
@@ -36,6 +21,8 @@
 
 class BasketTest extends BaseIntegrationTest
 {
+    //<editor-fold desc="Basket v1 tests">
+
     /**
      * Verify basket can be created and fetched.
      *
@@ -65,17 +52,17 @@ public function minBasketShouldBeCreatableAndFetchable(): void
      *
      * @test
      */
-    public function maxBasketShouldBeCreatableAndFetchableWorkAround(): void
+    public function maxBasketShouldBeCreatableAndFetchable(): void
     {
         $basket = new Basket('b' . self::generateRandomId(), 123.4, 'EUR', []);
         $basket->setNote('This basket is creatable!');
         $basketItem = (new BasketItem('myItem', 1234, 2345, 12))
             ->setBasketItemReferenceId('refId')
             ->setAmountVat(1.24)
-            ->setVat(19)
+            ->setVat(19.5)
             ->setUnit('ert')
             ->setAmountDiscount(1234.9)
-            ->setImageUrl('https://dev.unzer.com/wp-content/uploads/2020/09/Unzer__PrimaryLogo_Raspberry_RGB.png')
+            ->setImageUrl('https://docs.unzer.com/card/card.png')
             ->setSubTitle('This is some subtitle for this item')
             ->setType('this is some type');
         $basket->addBasketItem($basketItem);
@@ -99,8 +86,8 @@ public function maxBasketShouldBeCreatableAndFetchableWorkAround(): void
      *
      * @dataProvider basketItemWithInvalidUrlWillThrowAnErrorDP
      *
-     * @param $expectException
-     * @param $imageUrl
+     * @param      $expectException
+     * @param      $imageUrl
      * @param null $exceptionCode
      */
     public function basketItemWithInvalidUrlWillThrowAnError($expectException, $imageUrl, $exceptionCode = null): void
@@ -158,10 +145,12 @@ public function basketShouldBeUpdateable(): void
      */
     public function authorizeTransactionsShouldPassAlongTheBasketIdIfSet(): void
     {
+        $this->useLegacyKey();
+
         $orderId = 'o'. self::generateRandomId();
         $basket  = new Basket($orderId, 123.4, 'EUR', []);
         $basket->setNote('This basket is creatable!');
-        $basketItem = (new BasketItem('myItem', 123.4, 234.5, 12))->setBasketItemReferenceId('refId');
+        $basketItem = (new BasketItem('myItem', 123.4, 123.4, 12))->setBasketItemReferenceId('refId');
         $basket->addBasketItem($basketItem);
         $this->unzer->createBasket($basket);
         $this->assertNotEmpty($basket->getId());
@@ -181,6 +170,7 @@ public function authorizeTransactionsShouldPassAlongTheBasketIdIfSet(): void
      */
     public function chargeTransactionsShouldPassAlongTheBasketIdIfSet(): void
     {
+        $this->useLegacyKey();
         $basket  = $this->createBasket();
         $this->assertNotEmpty($basket->getId());
 
@@ -201,6 +191,8 @@ public function chargeTransactionsShouldPassAlongTheBasketIdIfSet(): void
      */
     public function authorizeTransactionsShouldCreateBasketIfItDoesNotExistYet(): void
     {
+        $this->useLegacyKey();
+
         $orderId = 'o'. self::generateRandomId();
         $basket  = new Basket($orderId, 123.4, 'EUR', []);
         $basket->setNote('This basket is creatable!');
@@ -224,6 +216,8 @@ public function authorizeTransactionsShouldCreateBasketIfItDoesNotExistYet(): vo
      */
     public function chargeTransactionsShouldCreateBasketIfItDoesNotExistYet(): void
     {
+        $this->useLegacyKey();
+
         $orderId = 'o'. self::generateRandomId();
         $basket  = new Basket($orderId, 123.4, 'EUR', []);
         $basket->setNote('This basket is creatable!');
@@ -241,6 +235,8 @@ public function chargeTransactionsShouldCreateBasketIfItDoesNotExistYet(): void
         $this->assertEquals($basket->expose(), $fetchedPayment->getBasket()->expose());
     }
 
+    //</editor-fold>
+
     //<editor-fold desc="Data Providers">
 
     /**
@@ -249,7 +245,7 @@ public function chargeTransactionsShouldCreateBasketIfItDoesNotExistYet(): void
     public function basketItemWithInvalidUrlWillThrowAnErrorDP(): array
     {
         return [
-            'valid ' => [false, 'https://dev.unzer.com/wp-content/uploads/2020/09/Unzer__PrimaryLogo_Raspberry_RGB.png'],
+            'valid ' => [false, 'https://docs.unzer.com/card/card.png'],
             'valid null' => [false, null],
             'valid empty' => [false, ''],
             'invalid not available' => [true, 'https://files.readme.io/does-not-exist.jpg', ApiResponseCodes::API_ERROR_BASKET_ITEM_IMAGE_INVALID_URL]
diff --git a/vendor/unzerdev/php-sdk/test/integration/BasketV2Test.php b/vendor/unzerdev/php-sdk/test/integration/BasketV2Test.php
new file mode 100644
index 0000000..71428ab
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/test/integration/BasketV2Test.php
@@ -0,0 +1,320 @@
+<?php
+
+/** @noinspection PhpUnhandledExceptionInspection */
+/** @noinspection PhpDocMissingThrowsInspection */
+/**
+ * This class defines integration tests to verify Basket functionalities.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+
+namespace UnzerSDK\test\integration;
+
+use UnzerSDK\Constants\ApiResponseCodes;
+use UnzerSDK\Exceptions\UnzerApiException;
+use UnzerSDK\Resources\Basket;
+use UnzerSDK\Resources\EmbeddedResources\BasketItem;
+use UnzerSDK\Resources\PaymentTypes\Paypal;
+use UnzerSDK\Resources\PaymentTypes\SepaDirectDebit;
+use UnzerSDK\test\BaseIntegrationTest;
+
+class BasketV2Test extends BaseIntegrationTest
+{
+    //<editor-fold desc="Basket v2 tests">
+
+    /**
+     * Verify basket can be created and fetched.
+     *
+     * @test
+     */
+    public function minV2BasketShouldBeCreatableAndFetchable(): void
+    {
+        $basket = new Basket();
+        $basket->setTotalValueGross(100)
+            ->setCurrencyCode('EUR');
+        $basketItem = new BasketItem();
+        $basketItem->setBasketItemReferenceId('item1')
+            ->setQuantity(1)
+            ->setAmountPerUnitGross(100)
+            ->setTitle('title');
+        $basket->addBasketItem($basketItem);
+        $this->assertEmpty($basket->getId());
+
+        $this->unzer->createBasket($basket);
+        $this->assertNotEmpty($basket->getId());
+
+        $fetchedBasket = $this->unzer->fetchBasket($basket->getId())->setOrderId('');
+        $this->assertEquals($basket->expose(), $fetchedBasket->expose());
+    }
+
+    /**
+     * Verify basket can be created and fetched.
+     *
+     * @test
+     */
+    public function BasketShouldBeCreatableAndFetchable(): void
+    {
+        $orderId = microtime(true);
+        $basket = new Basket();
+        $basket->setTotalValueGross(100)
+            ->setOrderId('testOrderId')
+            ->setCurrencyCode('EUR');
+        $basketItem = new BasketItem();
+        $basketItem->setBasketItemReferenceId('item1')
+            ->setQuantity(1)
+            ->setAmountPerUnitGross(100)
+            ->setTitle('title');
+        $basket->addBasketItem($basketItem);
+        $this->assertEmpty($basket->getId());
+
+        $this->unzer->createBasket($basket);
+        $this->assertNotEmpty($basket->getId());
+
+        $fetchedBasket = $this->unzer->fetchBasket($basket->getId());
+        $this->assertEquals($basket->expose(), $fetchedBasket->expose());
+    }
+
+    /**
+     * Verify basket can be created and fetched.
+     *
+     * @test
+     */
+    public function maxBasketShouldBeCreatableAndFetchable(): void
+    {
+        $orderId = 'o'. self::generateRandomId();
+        $basket = new Basket();
+        $basket->setOrderId($orderId)
+            ->setCurrencyCode('EUR')
+            ->setNote('note this!')
+            ->setTotalValueGross(133.33);
+
+        $basketItem = (new BasketItem())
+            ->setBasketItemReferenceId('refIdOne')
+            ->setQuantity(10)
+            ->setAmountPerUnitGross(10.11)
+            ->setVat(19)
+            ->setTitle('Item Title 1')
+            ->setUnit('ert')
+            ->setAmountDiscountPerUnitGross(0.11)
+            ->setSubTitle('This is some subtitle for this item')
+            ->setImageUrl('https://docs.unzer.com/card/card.png')
+            ->setType('this is some type');
+        $basket->addBasketItem($basketItem);
+
+        $basketItem = (new BasketItem())
+            ->setBasketItemReferenceId('refIdtwo')
+            ->setQuantity(1)
+            ->setAmountPerUnitGross(33.33)
+            ->setVat(19.5)
+            ->setTitle('Item Title 1')
+            ->setUnit('ert')
+            ->setAmountDiscountPerUnitGross(0.0)
+            ->setSubTitle('This is some subtitle for this item')
+            ->setImageUrl('https://docs.unzer.com/card/card.png')
+            ->setType('this is some type');
+        $basket->addBasketItem($basketItem);
+
+        $this->assertEmpty($basket->getId());
+
+        $this->unzer->createBasket($basket);
+        $this->assertNotEmpty($basket->getId());
+
+        $fetchedBasket = $this->unzer->fetchBasket($basket->getId());
+        $exposedBasket = $basket->expose();
+        unset($exposedBasket['note']);
+        $this->assertEquals($exposedBasket, $fetchedBasket->expose());
+        $this->assertEquals(
+            $basket->getBasketItemByIndex(0)->expose(),
+            $fetchedBasket->getBasketItemByIndex(0)->expose()
+        );
+    }
+
+    /**
+     * Verify basketItem with invalid imageUrl will return an error.
+     *
+     * @test
+     *
+     * @dataProvider basketItemWithInvalidUrlWillThrowAnErrorDP
+     *
+     * @param      $expectException
+     * @param      $imageUrl
+     * @param null $exceptionCode
+     */
+    public function basketItemWithInvalidUrlWillThrowAnError($expectException, $imageUrl, $exceptionCode = null): void
+    {
+        $basket = new Basket('b' . self::generateRandomId());
+        $basket->setTotalValueGross(100)
+            ->setCurrencyCode('EUR');
+
+        $basketItem = (new BasketItem())
+            ->setImageUrl($imageUrl)
+            ->setAmountPerUnitGross(100)
+            ->setQuantity(1)
+            ->setBasketItemReferenceId('item1')
+            ->setTitle('title');
+        $basket->addBasketItem($basketItem);
+
+        try {
+            $this->unzer->createBasket($basket);
+            $this->assertFalse(
+                $expectException,
+                'Failed asserting that exception of type "UnzerSDK\Exceptions\UnzerApiException" is thrown.'
+            );
+        } catch (UnzerApiException $e) {
+            $this->assertTrue($expectException);
+            $this->assertEquals($exceptionCode, $e->getCode());
+            $this->assertNotNull($e->getErrorId());
+        }
+    }
+
+    /**
+     * Verify the Basket can be updated.
+     *
+     * @test
+     */
+    public function basketShouldBeUpdateable(): void
+    {
+        $orderId = 'b' . self::generateRandomId();
+        $basket = new Basket($orderId);
+        $basket->setTotalValueGross(99.99)
+            ->setCurrencyCode('EUR');
+
+        $basketItem = (new BasketItem())
+            ->setAmountPerUnitGross(99.99)
+            ->setQuantity(1)
+            ->setBasketItemReferenceId('item1')
+            ->setTitle('title');
+
+        $basket->addBasketItem($basketItem);
+        $this->unzer->createBasket($basket);
+
+        $updateBasket = $this->unzer->fetchBasket($basket->getId());
+        $updateBasket->setTotalValueGross(123.45)
+            ->getBasketItemByIndex(0)
+            ->setAmountPerUnitGross(123.45)
+            ->setTitle('This item can also be updated!');
+        $this->unzer->updateBasket($updateBasket);
+
+        $this->unzer->fetchBasket($basket);
+        $this->assertEquals($orderId, $basket->getOrderId());
+        $this->assertEquals(123.45, $basket->getTotalValueGross());
+        $this->assertNotEquals($basket->getBasketItemByIndex(0)->expose(), $basketItem->expose());
+    }
+
+    /**
+     * Verify basket can be passed to the payment on authorize.
+     *
+     * @test
+     */
+    public function authorizeTransactionsShouldPassAlongTheBasketIdIfSet(): void
+    {
+        $basket = $this->createV2Basket();
+        $this->assertNotEmpty($basket->getId());
+
+        /** @var Paypal $paypal */
+        $paypal = $this->unzer->createPaymentType(new Paypal());
+        $authorize = $paypal->authorize(123.4, 'EUR', 'https://unzer.com', null, null, null, $basket);
+
+        $fetchedPayment = $this->unzer->fetchPayment($authorize->getPaymentId());
+        $this->assertEquals($basket->expose(), $fetchedPayment->getBasket()->expose());
+    }
+
+    /**
+     * Verify basket can be passed to the payment on charge.
+     *
+     * @test
+     */
+    public function chargeTransactionsShouldPassAlongTheBasketIdIfSet(): void
+    {
+        $this->useLegacyKey();
+        $basket  = $this->createV2Basket();
+        $this->assertNotEmpty($basket->getId());
+
+        $sdd = (new SepaDirectDebit('DE89370400440532013000'))->setBic('COBADEFFXXX');
+        $this->unzer->createPaymentType($sdd);
+
+        $customer = $this->getMaximumCustomerInclShippingAddress()->setShippingAddress($this->getBillingAddress());
+        $charge   = $sdd->charge(119.0, 'EUR', self::RETURN_URL, $customer, null, null, $basket);
+
+        $fetchedPayment = $this->unzer->fetchPayment($charge->getPaymentId());
+        $this->assertEquals($basket->expose(), $fetchedPayment->getBasket()->expose());
+    }
+
+    /**
+     * Verify basket will be created and passed to the payment on authorize if it does not exist yet.
+     *
+     * @test
+     */
+    public function authorizeTransactionsShouldCreateBasketIfItDoesNotExistYet(): void
+    {
+        $orderId = 'b' . self::generateRandomId();
+        $basket = new Basket($orderId);
+        $basket->setTotalValueGross(99.99)
+            ->setCurrencyCode('EUR');
+
+        $basketItem = (new BasketItem())
+            ->setAmountPerUnitGross(99.99)
+            ->setQuantity(1)
+            ->setBasketItemReferenceId('item1')
+            ->setTitle('title');
+        $basket->addBasketItem($basketItem);
+        $this->assertEmpty($basket->getId());
+
+        /** @var Paypal $paypal */
+        $paypal = $this->unzer->createPaymentType(new Paypal());
+        $authorize = $paypal->authorize(123.4, 'EUR', 'https://unzer.com', null, null, null, $basket);
+        $this->assertNotEmpty($basket->getId());
+
+        $fetchedPayment = $this->unzer->fetchPayment($authorize->getPaymentId());
+        $this->assertEquals($basket->expose(), $fetchedPayment->getBasket()->expose());
+    }
+
+    /**
+     * Verify basket will be created and passed to the payment on charge if it does not exist yet.
+     *
+     * @test
+     */
+    public function chargeTransactionsShouldCreateBasketIfItDoesNotExistYet(): void
+    {
+        $orderId = 'b' . self::generateRandomId();
+        $basket = new Basket($orderId);
+        $basket->setTotalValueGross(99.99)
+            ->setCurrencyCode('EUR');
+
+        $basketItem = (new BasketItem())
+            ->setAmountPerUnitGross(99.99)
+            ->setQuantity(1)
+            ->setBasketItemReferenceId('item1')
+            ->setTitle('title');
+        $basket->addBasketItem($basketItem);
+        $this->assertEmpty($basket->getId());
+
+        /** @var Paypal $paypal */
+        $paypal = $this->unzer->createPaymentType(new Paypal());
+        $charge = $paypal->charge(123.4, 'EUR', 'https://unzer.com', null, null, null, $basket);
+        $this->assertNotEmpty($basket->getId());
+
+        $fetchedPayment = $this->unzer->fetchPayment($charge->getPaymentId());
+        $this->assertEquals($basket->expose(), $fetchedPayment->getBasket()->expose());
+    }
+
+    //</editor-fold>
+
+    //<editor-fold desc="Data Providers">
+
+    /**
+     * @return array
+     */
+    public function basketItemWithInvalidUrlWillThrowAnErrorDP(): array
+    {
+        return [
+            'valid ' => [false, 'https://docs.unzer.com/card/card.png'],
+            'valid null' => [false, null],
+            'valid empty' => [false, ''],
+            'invalid not available' => [true, 'https://files.readme.io/does-not-exist.jpg', ApiResponseCodes::API_ERROR_BASKET_ITEM_IMAGE_INVALID_URL]
+        ];
+    }
+
+    //</editor-fold>
+}
diff --git a/vendor/unzerdev/php-sdk/test/integration/ConfigTest.php b/vendor/unzerdev/php-sdk/test/integration/ConfigTest.php
new file mode 100644
index 0000000..ca522f7
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/test/integration/ConfigTest.php
@@ -0,0 +1,80 @@
+<?php
+
+/** @noinspection PhpUnhandledExceptionInspection */
+/** @noinspection PhpDocMissingThrowsInspection */
+/**
+ * This class defines integration tests to verify Config functionalities.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+
+namespace UnzerSDK\test\integration;
+
+use UnzerSDK\Constants\CustomerTypes;
+use UnzerSDK\Exceptions\UnzerApiException;
+use UnzerSDK\Resources\Config;
+use UnzerSDK\Resources\PaymentTypes\Card;
+use UnzerSDK\Resources\PaymentTypes\InstallmentSecured;
+use UnzerSDK\Resources\PaymentTypes\PaylaterInvoice;
+use UnzerSDK\Resources\PaymentTypes\Paypal;
+use UnzerSDK\Resources\PaymentTypes\SepaDirectDebit;
+use UnzerSDK\Resources\PaymentTypes\SepaDirectDebitSecured;
+use UnzerSDK\Resources\PaymentTypes\Sofort;
+use UnzerSDK\test\BaseIntegrationTest;
+
+class ConfigTest extends BaseIntegrationTest
+{
+    /**
+     * Invoice secured config is fetchable.
+     *
+     * @test
+     */
+    public function verifyPaylaterinvoiceConfigIsFetchable()
+    {
+        $config = (new Config())
+            ->setCustomerType(CustomerTypes::B2C)
+            ->setCountry('DE');
+
+        $this->assertNull($config->getDataPrivacyConsent());
+        $this->assertNull($config->getDataPrivacyDeclaration());
+        $this->assertNull($config->getTermsAndConditions());
+
+        $this->getUnzerObject()->fetchConfig(new PaylaterInvoice(), $config);
+
+        $this->assertNotNull($config->getDataPrivacyConsent());
+        $this->assertNotNull($config->getDataPrivacyDeclaration());
+        $this->assertNotNull($config->getTermsAndConditions());
+    }
+
+    /**
+     * Payment types that do not support config throw exception .
+     *
+     * @dataProvider verifyPaymentTypesWithNoConfigThrowExeptionDp
+     *
+     * @test
+     *
+     * @param mixed $paymentType
+     */
+    public function verifyPaymentTypesWithNoConfigThrowExeption($paymentType)
+    {
+        $this->expectException(UnzerApiException::class);
+        $this->expectExceptionMessage('The given payment method config is not found.');
+        $this->getUnzerObject()->fetchConfig($paymentType);
+    }
+
+    /** Provide Payment types that have no config to test error case.
+     * @return array
+     */
+    public function verifyPaymentTypesWithNoConfigThrowExeptionDp(): array
+    {
+        return [
+            'sofort' => [new Sofort()],
+            'paypal' => [new Paypal()],
+            'card' => [new Card(null, null, null)],
+            'directDebit' => [new SepaDirectDebit(null)],
+            'directDebitSecured' => [new SepaDirectDebitSecured(null)],
+            'instalment' => [new InstallmentSecured(null)],
+        ];
+    }
+}
diff --git a/vendor/unzerdev/php-sdk/test/integration/CustomerTest.php b/vendor/unzerdev/php-sdk/test/integration/CustomerTest.php
index c75c619..139b7b4 100644
--- a/vendor/unzerdev/php-sdk/test/integration/CustomerTest.php
+++ b/vendor/unzerdev/php-sdk/test/integration/CustomerTest.php
@@ -1,30 +1,15 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines integration tests to verify interface and
  * functionality of the Customer resource.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\integration
  */
+
 namespace UnzerSDK\test\integration;
 
 use UnzerSDK\Constants\ApiResponseCodes;
@@ -33,6 +18,7 @@
 use UnzerSDK\Resources\Customer;
 use UnzerSDK\Resources\PaymentTypes\Paypal;
 use UnzerSDK\test\BaseIntegrationTest;
+
 use function microtime;
 
 class CustomerTest extends BaseIntegrationTest
@@ -89,9 +75,26 @@ public function maxCustomerCanBeCreatedAndFetched(): Customer
         return $customer;
     }
 
+    /**
+     * Verify shipping type can be set for shipping address of customer resource.
+     *
+     * @test
+     */
+    public function customerWithShippingTypeCanBeCreatedAndFetched()
+    {
+        $customer   = $this->getMaximumCustomerInclShippingAddress();
+        $customer->getShippingAddress()->setShippingType('shippingType');
+
+        $this->unzer->createCustomer($customer);
+        $fetchedCustomer = $this->unzer->fetchCustomer($customer->getId());
+        $this->assertEquals('shippingType', $fetchedCustomer->getShippingAddress()->getShippingType());
+    }
+
     /**
      * @param Customer $customer
+     *
      * @depends maxCustomerCanBeCreatedAndFetched
+     *
      * @test
      */
     public function customerCanBeFetchedById(Customer $customer): void
@@ -102,6 +105,7 @@ public function customerCanBeFetchedById(Customer $customer): void
 
     /**
      * @depends maxCustomerCanBeCreatedAndFetched
+     *
      * @test
      */
     public function customerCanBeFetchedByCustomerId(): void
@@ -116,7 +120,9 @@ public function customerCanBeFetchedByCustomerId(): void
 
     /**
      * @param Customer $customer
+     *
      * @depends maxCustomerCanBeCreatedAndFetched
+     *
      * @test
      */
     public function customerCanBeFetchedByObject(Customer $customer): void
@@ -128,7 +134,9 @@ public function customerCanBeFetchedByObject(Customer $customer): void
 
     /**
      * @param Customer $customer
+     *
      * @depends maxCustomerCanBeCreatedAndFetched
+     *
      * @test
      */
     public function customerCanBeFetchedByObjectWithData(Customer $customer): void
@@ -210,6 +218,7 @@ public function transactionShouldReferenceCustomerIfItExistAndItsIdHasBeenPassed
      * Customer can be updated.
      *
      * @depends maxCustomerCanBeCreatedAndFetched
+     *
      * @test
      *
      * @param Customer $customer
@@ -230,6 +239,7 @@ public function customerShouldBeUpdateable(Customer $customer): void
      * Customer can be deleted.
      *
      * @depends maxCustomerCanBeCreatedAndFetched
+     *
      * @test
      *
      * @param Customer $customer
@@ -423,5 +433,21 @@ public function maxRegisteredB2bCustomerCanBeCreatedAndFetched(): void
         $this->assertEquals($customer->expose(), $fetchedCustomer->expose());
     }
 
+    /**
+     * Customer should contain clientIp set via header.
+     *
+     * @test
+     */
+    public function customerShouldContainClientIpSetViaHeader()
+    {
+        $customer = $this->getMinimalCustomer();
+        $clientIp = '123.123.123.123';
+        $this->unzer->setClientIp($clientIp);
+        $this->unzer->createCustomer($customer);
+
+        $fetchedCustomer = $this->unzer->fetchCustomer($customer->getId());
+        $this->assertEquals($clientIp, $fetchedCustomer->getGeoLocation()->getClientIp());
+    }
+
     //</editor-fold>
 }
diff --git a/vendor/unzerdev/php-sdk/test/integration/DummyResource.php b/vendor/unzerdev/php-sdk/test/integration/DummyResource.php
index c2fe9d0..dcbe1e6 100644
--- a/vendor/unzerdev/php-sdk/test/integration/DummyResource.php
+++ b/vendor/unzerdev/php-sdk/test/integration/DummyResource.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines a dummy resource used for unit tests.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\integration
  */
+
 namespace UnzerSDK\test\integration;
 
 use UnzerSDK\Traits\CanRecur;
diff --git a/vendor/unzerdev/php-sdk/test/integration/ExceptionTest.php b/vendor/unzerdev/php-sdk/test/integration/ExceptionTest.php
index ad15e29..062a47a 100644
--- a/vendor/unzerdev/php-sdk/test/integration/ExceptionTest.php
+++ b/vendor/unzerdev/php-sdk/test/integration/ExceptionTest.php
@@ -1,30 +1,15 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines integration tests to verify interface and
  * functionality of the Customer resource.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\integration
  */
+
 namespace UnzerSDK\test\integration;
 
 use UnzerSDK\Constants\ApiResponseCodes;
diff --git a/vendor/unzerdev/php-sdk/test/integration/KeypairTest.php b/vendor/unzerdev/php-sdk/test/integration/KeypairTest.php
index 16a69c3..6527211 100644
--- a/vendor/unzerdev/php-sdk/test/integration/KeypairTest.php
+++ b/vendor/unzerdev/php-sdk/test/integration/KeypairTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines integration tests to verify keypair functionalities.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\integration
  */
+
 namespace UnzerSDK\test\integration;
 
 use UnzerSDK\Unzer;
@@ -36,6 +21,7 @@ class KeypairTest extends BaseIntegrationTest
      * Validate valid keys are accepted.
      *
      * @test
+     *
      * @dataProvider validKeysDataProvider
      *
      * @param string $key
@@ -50,6 +36,7 @@ public function validKeysShouldBeExcepted($key): void
      * Validate invalid keys are revoked.
      *
      * @test
+     *
      * @dataProvider invalidKeysDataProvider
      *
      * @param string $key
diff --git a/vendor/unzerdev/php-sdk/test/integration/PaymentCancelTest.php b/vendor/unzerdev/php-sdk/test/integration/PaymentCancelTest.php
index 528768b..b889c0a 100644
--- a/vendor/unzerdev/php-sdk/test/integration/PaymentCancelTest.php
+++ b/vendor/unzerdev/php-sdk/test/integration/PaymentCancelTest.php
@@ -1,34 +1,21 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines integration tests to verify functionality of the Payment charge method.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\integration
  */
+
 namespace UnzerSDK\test\integration;
 
 use UnzerSDK\Constants\CancelReasonCodes;
 use UnzerSDK\Resources\PaymentTypes\Invoice;
+use UnzerSDK\Resources\PaymentTypes\InvoiceSecured;
 use UnzerSDK\test\BaseIntegrationTest;
+use UnzerSDK\test\Helper\TestEnvironmentService;
 
 class PaymentCancelTest extends BaseIntegrationTest
 {
@@ -65,6 +52,7 @@ public function doubleCancelOnAuthorizeShouldReturnEmptyArray(): void
      */
     public function cancelOnChargeAndDoubleCancel(): void
     {
+        $this->useLegacyKey();
         $charge = $this->createCharge(123.44);
         $payment = $this->unzer->fetchPayment($charge->getPaymentId());
         $this->assertTrue($payment->isCompleted());
@@ -123,6 +111,7 @@ public function fullCancelOnPaymentWithAuthorizeAndMultipleChargesShouldBePossib
      */
     public function partialCancelAndFullCancelOnSingleCharge(): void
     {
+        $this->useLegacyKey();
         $charge = $this->createCharge(222.33);
         $payment = $this->unzer->fetchPayment($charge->getPaymentId());
         $this->assertTrue($payment->isCompleted());
@@ -143,6 +132,7 @@ public function partialCancelAndFullCancelOnSingleCharge(): void
      * PHPLIB-228 - Case 4 + 5
      *
      * @test
+     *
      * @dataProvider partCancelDataProvider
      *
      * @param float $amount
@@ -174,6 +164,7 @@ public function partialCancelOnMultipleChargedAuthorization($amount, $numberCanc
      * PHPLIB-228 - Case 6
      *
      * @test
+     *
      * @dataProvider fullCancelDataProvider
      *
      * @param float $amount
@@ -223,6 +214,7 @@ public function fullCancelOnPartCanceledAuthorize(): void
      * PHPLIB-228 - Case 8
      *
      * @test
+     *
      * @dataProvider fullCancelDataProvider
      *
      * @param float $amount The amount to be cancelled.
@@ -249,6 +241,7 @@ public function fullCancelOnFullyChargedAuthorize($amount): void
      * PHPLIB-228 - Case 9
      *
      * @test
+     *
      * @dataProvider fullCancelDataProvider
      *
      * @param $amount
@@ -339,12 +332,14 @@ public function partCancelOnPartlyChargedAuthorizeWithAmountGtCharged(): void
      * PHPLIB-228 - Case 13
      *
      * @test
+     *
      * @dataProvider fullCancelDataProvider
      *
      * @param float $amount
      */
     public function fullCancelOnInitialInvoiceCharge($amount): void
     {
+        $this->getUnzerObject()->setKey(TestEnvironmentService::getLegacyTestPrivateKey());
         /** @var Invoice $invoice */
         $invoice = $this->unzer->createPaymentType(new Invoice());
         $charge = $invoice->charge(100.0, 'EUR', self::RETURN_URL);
@@ -365,6 +360,7 @@ public function fullCancelOnInitialInvoiceCharge($amount): void
      */
     public function partCancelOnInitialInvoiceChargeShouldBePossible(): void
     {
+        $this->getUnzerObject()->setKey(TestEnvironmentService::getLegacyTestPrivateKey());
         /** @var Invoice $invoice */
         $invoice = $this->unzer->createPaymentType(new Invoice());
         $charge = $invoice->charge(100.0, 'EUR', self::RETURN_URL);
@@ -377,6 +373,81 @@ public function partCancelOnInitialInvoiceChargeShouldBePossible(): void
         $this->assertAmounts($payment, 50.0, 0.0, 50.0, 0.0);
     }
 
+    /**
+     * Verify part cancel on initial ivs charge (reversal)
+     *
+     * @test
+     */
+    public function partCancelOnInitialInvoiceSecuredChargeShouldCancelMaxUnpaidAmount(): void
+    {
+        $this->getUnzerObject()->setKey(TestEnvironmentService::getLegacyTestPrivateKey());
+        /** @var InvoiceSecured $invoiceSecured */
+        $invoiceSecured = $this->unzer->createPaymentType(new InvoiceSecured());
+
+        $customer = $this->getMaximumCustomer();
+        $customer->setShippingAddress($customer->getBillingAddress());
+
+        $basket = $this->createBasket();
+        $invoiceId = 'i' . self::generateRandomId();
+        $charge = $invoiceSecured->charge(100.0, 'EUR', self::RETURN_URL, $customer, $basket->getOrderId(), null, $basket, null, $invoiceId);
+        $charge->getPayment()->ship();
+        $paymentId = $charge->getPaymentId();
+
+        $this->assertTrue($charge->isPending()); // Set your break point here.
+        $payment = $this->unzer->fetchPayment($charge->getPaymentId());
+        if (count($payment->getCharges()) !== 2) {
+            $testDescription = 'This test needs assistance:
+            To perform this test properly, first set a breakpoint after charge, before the payment gets fetched.
+            Then perform a receipt manually over 60€ on the "reservation".
+            After that this test can be continued';
+            $this->markTestSkipped($testDescription);
+        }
+        $this->assertTrue($payment->isCompleted());
+        $this->assertAmounts($payment, 0, 100, 100.0, 0);
+
+        $this->assertCount(2, $payment->cancelAmount(50.0));
+        $this->assertTrue($payment->isCompleted());
+        $this->assertAmounts($payment, 0, 50.0, 100.0, 50.0);
+    }
+
+    /**
+     * Verify skip cancel on initial ivs charge
+     *
+     * @test
+     */
+    public function fullCancelOnPaidInvoiceSecuredPaymentShouldBePossible(): void
+    {
+        $this->getUnzerObject()->setKey(TestEnvironmentService::getLegacyTestPrivateKey());
+        /** @var InvoiceSecured $invoiceSecured */
+        $invoiceSecured = $this->unzer->createPaymentType(new InvoiceSecured());
+
+        $customer = $this->getMaximumCustomer();
+        $customer->setShippingAddress($customer->getBillingAddress());
+
+        $basket = $this->createBasket();
+        $invoiceId = 'i' . self::generateRandomId();
+        $charge = $invoiceSecured->charge(100.0, 'EUR', self::RETURN_URL, $customer, $basket->getOrderId(), null, $basket, null, $invoiceId);
+        $charge->getPayment()->ship();
+        $paymentId = $charge->getPaymentId();
+
+        $this->assertTrue($charge->isPending()); // Set your break point here.
+        $payment = $this->unzer->fetchPayment($charge->getPaymentId());
+        if (count($payment->getCharges()) !== 2) {
+            $testDescription = 'This test needs assistance:
+            To perform this test properly, first set a breakpoint after charge, before the payment gets fetched.
+            Then perform a receipt manually over 100€ on the "reservation".
+            After that this test can be continued';
+            $this->markTestSkipped($testDescription);
+        }
+        $this->assertTrue($payment->isCompleted());
+        $this->assertAmounts($payment, 0, 100.0, 100.0, 0);
+
+        $cancellations = $payment->cancelAmount();
+        $this->assertCount(1, $cancellations);
+        $this->assertTrue($payment->isCompleted());
+        $this->assertAmounts($payment, 0, 0, 100.0, 100.0);
+    }
+
     /**
      * Verify cancelling more than was charged.
      * PHPLIB-228 - Case 15
@@ -385,6 +456,7 @@ public function partCancelOnInitialInvoiceChargeShouldBePossible(): void
      */
     public function cancelMoreThanWasCharged(): void
     {
+        $this->useLegacyKey();
         $charge = $this->createCharge(50.0);
         $payment = $this->unzer->fetchPayment($charge->getPaymentId());
         $this->assertTrue($payment->isCompleted());
diff --git a/vendor/unzerdev/php-sdk/test/integration/PaymentTest.php b/vendor/unzerdev/php-sdk/test/integration/PaymentTest.php
index ccf24ff..b21ef76 100644
--- a/vendor/unzerdev/php-sdk/test/integration/PaymentTest.php
+++ b/vendor/unzerdev/php-sdk/test/integration/PaymentTest.php
@@ -1,30 +1,15 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines integration tests to verify interface and
  * functionality of the Payment resource.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\integration
  */
+
 namespace UnzerSDK\test\integration;
 
 use UnzerSDK\Constants\ApiResponseCodes;
@@ -159,7 +144,7 @@ public function paymentChargeOnAuthorizeShouldTakeResourceIds(): void
     {
         $card = $this->unzer->createPaymentType($this->createCardObject());
         $authorization = $this->unzer->authorize(100.00, 'EUR', $card, 'http://unzer.com', null, null, null, null, false);
-        $charge = $this->unzer->chargePayment($authorization->getPaymentId(), null, 'EUR', 'o' . self::generateRandomId(), 'i' . self::generateRandomId());
+        $charge = $this->unzer->chargePayment($authorization->getPaymentId(), null, 'o' . self::generateRandomId(), 'i' . self::generateRandomId());
 
         $this->assertNotEmpty($charge->getId());
     }
diff --git a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/AlipayTest.php b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/AlipayTest.php
index ff4147f..5f4ec9c 100644
--- a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/AlipayTest.php
+++ b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/AlipayTest.php
@@ -1,30 +1,15 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines integration tests to verify interface and
  * functionality of the payment method Alipay.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\integration\PaymentTypes
  */
+
 namespace UnzerSDK\test\integration\PaymentTypes;
 
 use UnzerSDK\Constants\ApiResponseCodes;
@@ -64,6 +49,7 @@ public function alipayShouldBeCreatableAndFetchable(): Alipay
      * @param Alipay $alipay
      *
      * @return Charge
+     *
      * @depends alipayShouldBeCreatableAndFetchable
      */
     public function alipayShouldBeAbleToCharge(Alipay $alipay): Charge
@@ -82,6 +68,7 @@ public function alipayShouldBeAbleToCharge(Alipay $alipay): Charge
      * @test
      *
      * @param Alipay $alipay
+     *
      * @depends alipayShouldBeCreatableAndFetchable
      */
     public function alipayShouldNotBeAuthorizable(Alipay $alipay): void
diff --git a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/ApplepayTest.php b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/ApplepayTest.php
index aaf3d53..5a7a613 100644
--- a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/ApplepayTest.php
+++ b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/ApplepayTest.php
@@ -3,26 +3,8 @@
  * This class defines integration tests to verify interface and
  * functionality of the payment method Applepay.
  *
- *  Copyright (C) 2021 - today Unzer E-Com GmbH
- *
- *  Licensed under the Apache License, Version 2.0 (the "License");
- *  you may not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS,
- *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- *
  *  @link  https://docs.unzer.com/
  *
- *  @author  David Owusu <development@unzer.com>
- *
- *  @package  UnzerSDK
- *
  */
 
 namespace UnzerSDK\test\integration\PaymentTypes;
@@ -34,6 +16,11 @@
 
 class ApplepayTest extends BaseIntegrationTest
 {
+    protected function setUp(): void
+    {
+        $this->markTestSkipped('Testdata need to be updated.');
+    }
+
     /**
      * Verify applepay can be created and fetched.
      *
@@ -407,14 +394,14 @@ public function applepayChargeCanBeCanceled(): void
     private function createApplepayObject(): Applepay
     {
         $applepayAutorization = '{
-          "version": "EC_v1",
-          "data": "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",
-          "signature": "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",
-          "header": {
-            "ephemeralPublicKey": "MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEW7hYAxjCeE/r9SSRX/hJsfO+VxLvUqIzyeGn6lZ1v/pYYS66Bz0dsSzoMMZg8G32TAPXUr97AD4zCXfcQoZaOA==",
-            "publicKeyHash": "zqO5Y3ldWWm4NnIkfGCvJILw30rp3y46Jsf21gE8CNg=",
-            "transactionId": "94f6b37149ae2098efb287ed0ade704284cff3f672ef7f0dc17614b31e926b9d"
-          }
+            "version": "EC_v1",
+            "data": "EGOe1iZx081t+D0FLES+Ubyr2a3RfDQptIm0ocT223JLk9dxBLZDAMIwnCInsxN6YLGXQzB8Hn1CSeD2VsMr9E3gvl89bcolrP0nvmvgyQPvN5dt3jmF9G7m0OQoiRdOPVS1fA1cJB7dq3Xg0paMPfimdEepCs3GAGvrmF8nEZEq+F5qcouEX0F6AAcyIf5RETrJGZM+V8fG+9FxYh4H4yu8s6N3z5JpAjLx+rl2/fOCMqBBhaHkjhBsCHLpuJL6YMgYHh++AtooBAMOuctnomKdYX+OuxTY1k2S3DF7vvErI/1Daq4e8bbbC/fk8OqYxiDLSNXTzerPPKCjucGDkUlw+ZUIif2BVPDg1a7QsfS0JNNFP4eBWVezZrLt6ce/0cApLaRsimoSOCPYmw==",
+            "signature": "MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgEFADCABgkqhkiG9w0BBwEAAKCAMIID5DCCA4ugAwIBAgIIWdihvKr0480wCgYIKoZIzj0EAwIwejEuMCwGA1UEAwwlQXBwbGUgQXBwbGljYXRpb24gSW50ZWdyYXRpb24gQ0EgLSBHMzEmMCQGA1UECwwdQXBwbGUgQ2VydGlmaWNhdGlvbiBBdXRob3JpdHkxEzARBgNVBAoMCkFwcGxlIEluYy4xCzAJBgNVBAYTAlVTMB4XDTIxMDQyMDE5MzcwMFoXDTI2MDQxOTE5MzY1OVowYjEoMCYGA1UEAwwfZWNjLXNtcC1icm9rZXItc2lnbl9VQzQtU0FOREJPWDEUMBIGA1UECwwLaU9TIFN5c3RlbXMxEzARBgNVBAoMCkFwcGxlIEluYy4xCzAJBgNVBAYTAlVTMFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEgjD9q8Oc914gLFDZm0US5jfiqQHdbLPgsc1LUmeY+M9OvegaJajCHkwz3c6OKpbC9q+hkwNFxOh6RCbOlRsSlaOCAhEwggINMAwGA1UdEwEB/wQCMAAwHwYDVR0jBBgwFoAUI/JJxE+T5O8n5sT2KGw/orv9LkswRQYIKwYBBQUHAQEEOTA3MDUGCCsGAQUFBzABhilodHRwOi8vb2NzcC5hcHBsZS5jb20vb2NzcDA0LWFwcGxlYWljYTMwMjCCAR0GA1UdIASCARQwggEQMIIBDAYJKoZIhvdjZAUBMIH+MIHDBggrBgEFBQcCAjCBtgyBs1JlbGlhbmNlIG9uIHRoaXMgY2VydGlmaWNhdGUgYnkgYW55IHBhcnR5IGFzc3VtZXMgYWNjZXB0YW5jZSBvZiB0aGUgdGhlbiBhcHBsaWNhYmxlIHN0YW5kYXJkIHRlcm1zIGFuZCBjb25kaXRpb25zIG9mIHVzZSwgY2VydGlmaWNhdGUgcG9saWN5IGFuZCBjZXJ0aWZpY2F0aW9uIHByYWN0aWNlIHN0YXRlbWVudHMuMDYGCCsGAQUFBwIBFipodHRwOi8vd3d3LmFwcGxlLmNvbS9jZXJ0aWZpY2F0ZWF1dGhvcml0eS8wNAYDVR0fBC0wKzApoCegJYYjaHR0cDovL2NybC5hcHBsZS5jb20vYXBwbGVhaWNhMy5jcmwwHQYDVR0OBBYEFAIkMAua7u1GMZekplopnkJxghxFMA4GA1UdDwEB/wQEAwIHgDAPBgkqhkiG92NkBh0EAgUAMAoGCCqGSM49BAMCA0cAMEQCIHShsyTbQklDDdMnTFB0xICNmh9IDjqFxcE2JWYyX7yjAiBpNpBTq/ULWlL59gBNxYqtbFCn1ghoN5DgpzrQHkrZgTCCAu4wggJ1oAMCAQICCEltL786mNqXMAoGCCqGSM49BAMCMGcxGzAZBgNVBAMMEkFwcGxlIFJvb3QgQ0EgLSBHMzEmMCQGA1UECwwdQXBwbGUgQ2VydGlmaWNhdGlvbiBBdXRob3JpdHkxEzARBgNVBAoMCkFwcGxlIEluYy4xCzAJBgNVBAYTAlVTMB4XDTE0MDUwNjIzNDYzMFoXDTI5MDUwNjIzNDYzMFowejEuMCwGA1UEAwwlQXBwbGUgQXBwbGljYXRpb24gSW50ZWdyYXRpb24gQ0EgLSBHMzEmMCQGA1UECwwdQXBwbGUgQ2VydGlmaWNhdGlvbiBBdXRob3JpdHkxEzARBgNVBAoMCkFwcGxlIEluYy4xCzAJBgNVBAYTAlVTMFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAE8BcRhBnXZIXVGl4lgQd26ICi7957rk3gjfxLk+EzVtVmWzWuItCXdg0iTnu6CP12F86Iy3a7ZnC+yOgphP9URaOB9zCB9DBGBggrBgEFBQcBAQQ6MDgwNgYIKwYBBQUHMAGGKmh0dHA6Ly9vY3NwLmFwcGxlLmNvbS9vY3NwMDQtYXBwbGVyb290Y2FnMzAdBgNVHQ4EFgQUI/JJxE+T5O8n5sT2KGw/orv9LkswDwYDVR0TAQH/BAUwAwEB/zAfBgNVHSMEGDAWgBS7sN6hWDOImqSKmd6+veuv2sskqzA3BgNVHR8EMDAuMCygKqAohiZodHRwOi8vY3JsLmFwcGxlLmNvbS9hcHBsZXJvb3RjYWczLmNybDAOBgNVHQ8BAf8EBAMCAQYwEAYKKoZIhvdjZAYCDgQCBQAwCgYIKoZIzj0EAwIDZwAwZAIwOs9yg1EWmbGG+zXDVspiv/QX7dkPdU2ijr7xnIFeQreJ+Jj3m1mfmNVBDY+d6cL+AjAyLdVEIbCjBXdsXfM4O5Bn/Rd8LCFtlk/GcmmCEm9U+Hp9G5nLmwmJIWEGmQ8Jkh0AADGCAYwwggGIAgEBMIGGMHoxLjAsBgNVBAMMJUFwcGxlIEFwcGxpY2F0aW9uIEludGVncmF0aW9uIENBIC0gRzMxJjAkBgNVBAsMHUFwcGxlIENlcnRpZmljYXRpb24gQXV0aG9yaXR5MRMwEQYDVQQKDApBcHBsZSBJbmMuMQswCQYDVQQGEwJVUwIIWdihvKr0480wDQYJYIZIAWUDBAIBBQCggZUwGAYJKoZIhvcNAQkDMQsGCSqGSIb3DQEHATAcBgkqhkiG9w0BCQUxDxcNMjExMTEwMTAxNTU4WjAqBgkqhkiG9w0BCTQxHTAbMA0GCWCGSAFlAwQCAQUAoQoGCCqGSM49BAMCMC8GCSqGSIb3DQEJBDEiBCBeyyDzab9pZ4dwoq6cLrl9Cbho/Eh88vKGYEa8C2p+5TAKBggqhkjOPQQDAgRHMEUCIHUpR3i72URhoyaOyqyoA26YxrY1RDf7NmamuUIuIHtzAiEAhtKcwlAg4wo+SCu+RTTngb7WWmCCdQ9zJ2wC3UKZzj4AAAAAAAA=",
+            "header": {
+                "ephemeralPublicKey": "MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAECjiINGVdR1tbzHQ1jOpdn0+GgSsxRsFkp2uvd7XK+yXNvIj8fAA0JDWZ41VXdg3578qMOu1FMdGbaL7KS28/qw==",
+                "publicKeyHash": "zqO5Y3ldWWm4NnIkfGCvJILw30rp3y46Jsf21gE8CNg=",
+                "transactionId": "91ce5ad365a5bfaea7db143e407c8b2b183ddbc5f256143a9685c70fedd1ce75"
+            }
         }';
 
         $applepay = new Applepay(null, null, null, null);
diff --git a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/BancontactTest.php b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/BancontactTest.php
index e7404c4..f5466c6 100644
--- a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/BancontactTest.php
+++ b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/BancontactTest.php
@@ -1,31 +1,15 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines integration tests to verify interface and functionality of the payment method Bancontact.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  David Owusu <development@unzer.com>
- * @author  Florian Evertz <development@unzer.com>
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\integration\PaymentTypes
+ @package  UnzerSDK\test\integration\PaymentTypes
  */
+
 namespace UnzerSDK\test\integration\PaymentTypes;
 
 use UnzerSDK\Constants\ApiResponseCodes;
@@ -64,7 +48,7 @@ public function bancontactShouldThrowExceptionOnAuthorize(): void
         $bancontact = $this->unzer->createPaymentType(new Bancontact());
         $this->unzer->authorize(100.0, 'EUR', $bancontact, self::RETURN_URL);
     }
-    
+
     /**
      * Verify that Bancontact is chargeable
      *
diff --git a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/CardTest.php b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/CardTest.php
index c25bff7..7b585fe 100644
--- a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/CardTest.php
+++ b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/CardTest.php
@@ -1,37 +1,25 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines integration tests to verify interface and functionality
  * of the card payment methods e.g. Credit Card and Debit Card.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\integration\PaymentTypes
  */
+
 namespace UnzerSDK\test\integration\PaymentTypes;
 
 use UnzerSDK\Constants\ApiResponseCodes;
+use UnzerSDK\Constants\ExemptionType;
 use UnzerSDK\Exceptions\UnzerApiException;
+use UnzerSDK\Resources\EmbeddedResources\CardTransactionData;
 use UnzerSDK\Resources\EmbeddedResources\CardDetails;
 use UnzerSDK\Resources\PaymentTypes\BasePaymentType;
 use UnzerSDK\Resources\PaymentTypes\Card;
+use UnzerSDK\Resources\TransactionTypes\Charge;
 use UnzerSDK\Services\ValueService;
 use UnzerSDK\test\BaseIntegrationTest;
 
@@ -88,13 +76,14 @@ public function cardShouldBeCreatable(string $cardNumber, CardDetails $expectedC
     public function cardShouldUseEmail($email, $expected)
     {
         // when.
-        /** @var Card $card */
         $card = $this->createCardObject('4711100000000000');
         $this->assertNull($card->getId());
         $this->assertNull($card->getEmail()); // default value is set.
 
         // then.
         $card->setEmail($email); // override email.
+
+        /** @var Card $card */
         $card = $this->unzer->createPaymentType($card);
         $this->assertNotNull($card->getId());
         $this->assertEquals($email, $card->getEmail());
@@ -112,15 +101,19 @@ public function cardShouldUseEmail($email, $expected)
      *
      * @dataProvider supportedRecurrenceTypesDP
      *
-     * @param $recurrenceType
+     * @param       $recurrenceType
+     * @param mixed $isrecurring
      *
      * @throws UnzerApiException
      */
-    public function cardShouldBeChargeableWithRecurrenceType($recurrenceType): void
+    public function cardShouldBeChargeableWithRecurrenceType($recurrenceType, $isrecurring): void
     {
+        $this->useNon3dsKey();
         $card = $this->createCardObject('4711100000000000');
         /** @var Card $card */
         $card = $this->unzer->createPaymentType($card);
+        $this->assertNotTrue($card->isRecurring());
+
         $chargeResponse = $card->charge('99.99', 'EUR', 'https://unzer.com', null, null, null, null, null, null, null, $recurrenceType);
         $this->assertEquals($recurrenceType, $chargeResponse->getRecurrenceType());
         $fetchedCharge = $this->unzer->fetchChargeById($chargeResponse->getPaymentId(), $chargeResponse->getId());
@@ -129,6 +122,9 @@ public function cardShouldBeChargeableWithRecurrenceType($recurrenceType): void
             $this->assertNotNull($fetchedCharge->getAdditionalTransactionData());
         }
         $this->assertEquals($recurrenceType, $fetchedCharge->getRecurrenceType());
+
+        $fetchedCard = $this->getUnzerObject()->fetchPaymentType($card->getId());
+        $this->assertTrue($fetchedCard->isRecurring());
     }
 
     /**
@@ -151,6 +147,21 @@ public function invalidRecurrenceTypeShouldThrowApiException($recurrenceType): v
         $card->charge('99.99', 'EUR', 'https://unzer.com', null, null, null, null, null, null, null, $recurrenceType);
     }
 
+    /**
+     * Invalid expiry date should throw API exception.
+     *
+     * @test
+     */
+    public function invalidExpiryDateShouldThrowApiException(): void
+    {
+        $card = $this->createCardObject('4711100000000000');
+        $card->setExpiryDate('01/2001');
+
+        /** @var Card $card */
+        $this->expectException(UnzerApiException::class);
+        $this->unzer->createPaymentType($card);
+    }
+
     /**
      * Card should be chargeable with recurrence type.
      *
@@ -176,7 +187,7 @@ public function cardCanBeAuthorizedWithRecurrenceType($recurrenceType): void
         }
         $this->assertEquals($recurrenceType, $fetchedCharge->getRecurrenceType());
     }
-    
+
     /**
      * Verify that an invalid email cause an UnzerApiException.
      *
@@ -224,7 +235,7 @@ public function cardCanBeUpdatedWithEmail()
         // then
         /** @var Card $updatedCard */
         $updatedCard = $this->unzer->fetchPaymentType($fetchedCard->getId());
-        $this->assertRegExp('/0000$/', $updatedCard->getNumber());
+        $this->assertMatchesRegularExpression('/0000$/', $updatedCard->getNumber());
         $this->assertEquals('test2@test.com', $updatedCard->getEmail());
     }
 
@@ -244,6 +255,57 @@ public function cardWith3dsFlagShouldSetItAlsoInTransactions(): void
         $this->assertFalse($charge->isCard3ds());
     }
 
+    /**
+     * Verfify card transaction can be used with exemptionType
+     *
+     * @test
+     */
+    public function cardTransactionAcceptsExemptionType(): void
+    {
+        $card = $this->createCardObject();
+        /** @var Card $card */
+        $card = $this->unzer->createPaymentType($card);
+        $charge = new Charge(12.34, 'EUR', 'https://docs.unzer.com');
+        $cardTransactionData = (new CardTransactionData())
+            ->setExemptionType(ExemptionType::LOW_VALUE_PAYMENT);
+
+        $charge->setCardTransactionData($cardTransactionData);
+        $this->getUnzerObject()->performCharge($charge, $card);
+
+        // Verify lvp value gets mapped from response
+        $fetchedCharge = $this->unzer->fetchChargeById($charge->getPaymentId(), $charge->getId());
+        $this->assertEquals(ExemptionType::LOW_VALUE_PAYMENT, $fetchedCharge->getCardTransactionData()->getExemptionType());
+    }
+
+    /**
+     * Verify card transaction returns Liability Shift Indicator.
+     *
+     * @test
+     *
+     * @dataProvider cardTransactionReturnsLiabilityIndicatorDP()
+     *
+     * @param mixed $pan
+     */
+    public function cardTransactionReturnsLiabilityIndicator($pan): void
+    {
+        $this->markTestSkipped('Requires a special config for card.');
+        $card = $this->createCardObject()->setNumber($pan)->set3ds(false);
+        /** @var Card $card */
+        $card = $this->unzer->createPaymentType($card);
+        $charge = $card->charge(12.34, 'EUR', 'https://docs.unzer.com');
+
+        // Verify Liability Indicator in response.
+        $this->assertNotNull($charge->getAdditionalTransactionData());
+        $this->assertNotNull($charge->getAdditionalTransactionData()->card->liability);
+
+        // Verify Liability Indicator In payment response.
+        $fetchedPayment = $this->unzer->fetchPayment($charge->getPaymentId());
+        $paymentCharge = $fetchedPayment->getCharge('s-chg-1', true);
+        $this->assertNotNull($paymentCharge->getAdditionalTransactionData()->card->liability);
+
+        $this->getUnzerObject()->fetchCharge($charge);
+    }
+
     /**
      * Verify that the card can perform an authorization with a card.
      *
@@ -593,11 +655,11 @@ public function cardShouldBeCreatableDP(): array
     {
         $cardDetailsA = new CardDetails();
         $cardDetailsAObj          = (object)[
-            'cardType'          => 'CLASSIC',
-            'account'           => 'CREDIT',
-            'countryIsoA2'      => 'RU',
-            'countryName'       => 'RUSSIAN FEDERATION',
-            'issuerName'        => '',
+            'cardType'          => 'STANDARD',
+            'account'           => 'DEBIT',
+            'countryIsoA2'      => 'BE',
+            'countryName'       => 'BELGIUM',
+            'issuerName'        => 'MASTERCARD EUROPE',
             'issuerUrl'         => '',
             'issuerPhoneNumber' => ''
         ];
@@ -616,7 +678,7 @@ public function cardShouldBeCreatableDP(): array
         $cardDetailsB->handleResponse($cardDetailsBObj);
 
         return [
-            'card type set'   => ['4012001037461114', $cardDetailsA],
+            'card type set'   => ['6799851000000032', $cardDetailsA],
             'issuer data set' => ['5453010000059543', $cardDetailsB]
         ];
     }
@@ -634,19 +696,29 @@ public function cardShouldUseEmailDataProvider()
     public function supportedRecurrenceTypesDP(): array
     {
         return [
-            'null' => [null],
-            'oneclick' => ['oneclick'],
-            'scheduled' => ['scheduled'],
-            'unscheduled' => ['unscheduled']
+            'null' => [null, false],
+            'empty string' => ['', false],
+            'oneclick' => ['oneclick', false],
+            'scheduled' => ['scheduled', true],
+            'unscheduled' => ['unscheduled', true]
         ];
     }
 
     public function invalidRecurrenceTypesDP(): array
     {
         return [
-            'empty' => [''],
             'invalid string' => ['invalid recurrence Type'],
             'number' => [42],
         ];
     }
+
+    public function cardTransactionReturnsLiabilityIndicatorDP()
+    {
+        return [
+            '6799851000000032' => ['6799851000000032'],
+            '5453010000059543' => ['5453010000059543'],
+            '4711100000000000' => ['4711100000000000'],
+            '4012001037461114' => ['4012001037461114']
+        ];
+    }
 }
diff --git a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/EPSTest.php b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/EPSTest.php
index c0bfabb..8faa874 100644
--- a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/EPSTest.php
+++ b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/EPSTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines integration tests to verify interface and functionality of the payment method EPS.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\integration\PaymentTypes
  */
+
 namespace UnzerSDK\test\integration\PaymentTypes;
 
 use UnzerSDK\Constants\ApiResponseCodes;
@@ -65,6 +50,7 @@ public function epsShouldBeCreatable(): EPS
      * @test
      *
      * @param EPS $eps
+     *
      * @depends epsShouldBeCreatable
      */
     public function epsShouldThrowExceptionOnAuthorize(EPS $eps): void
@@ -79,6 +65,7 @@ public function epsShouldThrowExceptionOnAuthorize(EPS $eps): void
      * Verify that eps payment type is chargeable.
      *
      * @test
+     *
      * @depends epsShouldBeCreatable
      *
      * @param EPS $eps
@@ -93,13 +80,14 @@ public function epsShouldBeChargeable(EPS $eps): void
         $this->assertTrue($charge->getPayment()->isPending());
 
         $fetchCharge = $this->unzer->fetchChargeById($charge->getPayment()->getId(), $charge->getId());
-        $this->assertEquals($charge->expose(), $fetchCharge->expose());
+        $this->assertEquals($charge->setCard3ds(false)->expose(), $fetchCharge->expose());
     }
 
     /**
      * Verify eps payment type can be fetched.
      *
      * @test
+     *
      * @depends epsShouldBeCreatable
      *
      * @param EPS $eps
diff --git a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/GiropayTest.php b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/GiropayTest.php
index 7b847e8..c6b5351 100644
--- a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/GiropayTest.php
+++ b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/GiropayTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines integration tests to verify interface and functionality of the payment method GiroPay.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\integration\PaymentTypes
  */
+
 namespace UnzerSDK\test\integration\PaymentTypes;
 
 use UnzerSDK\Constants\ApiResponseCodes;
@@ -76,7 +61,7 @@ public function giroPayShouldBeChargeable(): void
         $this->assertNotEmpty($charge->getRedirectUrl());
 
         $fetchCharge = $this->unzer->fetchChargeById($charge->getPayment()->getId(), $charge->getId());
-        $this->assertEquals($charge->expose(), $fetchCharge->expose());
+        $this->assertEquals($charge->setCard3ds(false)->expose(), $fetchCharge->expose());
     }
 
     /**
diff --git a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/GooglePayTest.php b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/GooglePayTest.php
new file mode 100644
index 0000000..9f6a903
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/GooglePayTest.php
@@ -0,0 +1,362 @@
+<?php
+
+/** @noinspection PhpUnhandledExceptionInspection */
+/** @noinspection PhpDocMissingThrowsInspection */
+/**
+ * This class defines integration tests to verify interface and functionality
+ * of the Google Pay payment method.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+
+namespace UnzerSDK\test\integration\PaymentTypes;
+
+use UnzerSDK\Constants\ApiResponseCodes;
+use UnzerSDK\Constants\ExemptionType;
+use UnzerSDK\Exceptions\UnzerApiException;
+use UnzerSDK\Resources\EmbeddedResources\CardTransactionData;
+use UnzerSDK\Resources\EmbeddedResources\GooglePay\IntermediateSigningKey;
+use UnzerSDK\Resources\EmbeddedResources\GooglePay\SignedKey;
+use UnzerSDK\Resources\EmbeddedResources\GooglePay\SignedMessage;
+use UnzerSDK\Resources\Payment;
+use UnzerSDK\Resources\PaymentTypes\BasePaymentType;
+use UnzerSDK\Resources\PaymentTypes\Googlepay;
+use UnzerSDK\Resources\TransactionTypes\Authorization;
+use UnzerSDK\Resources\TransactionTypes\Charge;
+use UnzerSDK\test\BaseIntegrationTest;
+use UnzerSDK\test\Fixtures\JsonProvider;
+
+class GooglePayTest extends BaseIntegrationTest
+{
+    protected function setUp(): void
+    {
+        if (empty($this->getTestToken())) {
+            $this->markTestSkipped('Skiped by default. To run test locally, overwrite a googlepay payment token
+         in `test/Fixtures/jsonData/googlePay/googlepayToken.json`.');
+        }
+        parent::setUp();
+    }
+
+    /**
+     * Verify that googlepay payment type resource can be created.
+     *
+     * @test
+     *
+     * @return BasePaymentType
+     */
+    public function googlePayShouldBeCreatable(): BasePaymentType
+    {
+        $googlePayToken = $this->getTestToken();
+        $googlepay = $this->createGooglepayObjectFromToken($googlePayToken);
+
+        $this->unzer->createPaymentType($googlepay);
+
+        $this->assertInstanceOf(Googlepay::class, $googlepay);
+        $this->assertNotNull($googlepay->getId());
+        $this->assertSame($this->unzer, $googlepay->getUnzerObject());
+
+        $geoLocation = $googlepay->getGeoLocation();
+        $this->assertNotEmpty($geoLocation->getClientIp());
+        $this->assertNotEmpty($geoLocation->getCountryCode());
+
+        return $googlepay;
+    }
+
+    /**
+     * Verify that a googlepay resource can be fetched from the api using its id.
+     *
+     * @test
+     *
+     * @depends googlePayShouldBeCreatable
+     *
+     * @param mixed $type
+     */
+    public function googlepayCanBeFetched($type): void
+    {
+        $this->assertNotNull($type->getId());
+
+        /** @var Googlepay $fetchedGooglepay */
+        $fetchedGooglepay = $this->unzer->fetchPaymentType($type->getId());
+        $this->assertNotNull($fetchedGooglepay->getId());
+        $this->assertEquals($type->getNumber(), $fetchedGooglepay->getNumber());
+        $this->assertEquals($type->getExpiryDate(), $fetchedGooglepay->getExpiryDate());
+    }
+
+    /**
+     * Verify that authorization can be performed with Google Pay.
+     *
+     * @test
+     *
+     * @depends googlePayShouldBeCreatable
+     *
+     * @param mixed $type
+     */
+    public function googlepayCanPerformAuthorization($type): Authorization
+    {
+        $authorizationRequest = $this->getLvpAuthorizationObject();
+        $authorization = $this->getUnzerObject()
+            ->performAuthorization(
+                $authorizationRequest,
+                $type
+            );
+
+        // verify authorization has been created
+        $this->assertNotNull($authorization->getId());
+
+        // verify payment object has been created
+        $payment = $authorization->getPayment();
+        $this->assertNotNull($payment);
+        $this->assertNotNull($payment->getId());
+
+        // verify resources are linked properly
+        $this->assertSame($authorization, $payment->getAuthorization());
+        $this->assertSame($type, $payment->getPaymentType());
+
+        // verify the payment object has been updated properly
+        $this->assertAmounts($payment, 2.99, 0.0, 2.99, 0.0);
+        $this->assertTrue($payment->isPending());
+        $this->assertTrue($authorization->isSuccess());
+
+        return $authorization;
+    }
+
+    /**
+     * Verify that authorization can be charged with Google Pay.
+     *
+     * @test
+     *
+     * @depends googlepayCanPerformAuthorization
+     *
+     * @param Authorization $authorization
+     */
+    public function authorizationCanBeCharged(Authorization $authorization): Payment
+    {
+        $charge = $this->getUnzerObject()
+            ->performChargeOnPayment(
+                $authorization->getPayment(),
+                new Charge()
+            );
+
+        // verify charge has been created
+        $this->assertNotNull($charge->getId());
+
+        // verify payment object has been created
+        $payment = $charge->getPayment();
+        $this->assertNotNull($payment);
+        $this->assertNotNull($payment->getId());
+
+        // verify resources are linked properly
+        $this->assertSame($charge, $payment->getCharge('s-chg-1'));
+        $this->assertSame($authorization->getPayment()->getPaymentType(), $payment->getPaymentType());
+
+        // verify the payment object has been updated properly
+        $this->assertAmounts($payment, 0, 2.99, 2.99, 0.0);
+        $this->assertTrue($payment->isCompleted());
+        $this->assertTrue($charge->isSuccess());
+
+        return $payment;
+    }
+
+    /**
+     * Verify the googlepay can perform charges and creates a payment object doing so.
+     *
+     * @test
+     *
+     * @depends googlePayShouldBeCreatable
+     *
+     * @param mixed $type
+     */
+    public function canPerformCharge($type): void
+    {
+        $charge = $this->getUnzerObject()
+            ->performCharge(
+                $this->getLvpChargeObject(),
+                $type
+            );
+
+        $fetchedType = $this->unzer->fetchPaymentType($type->getId());
+
+        // verify charge has been created
+        $this->assertNotNull($charge->getId());
+
+        // verify payment object has been created
+        $payment = $charge->getPayment();
+        $this->assertNotNull($payment);
+        $this->assertNotNull($payment->getId());
+
+        // verify resources are linked properly
+        $this->assertEquals($charge->expose(), $payment->getCharge($charge->getId())->expose());
+
+        // verify the payment object has been updated properly
+        $this->assertAmounts($payment, 0.0, 2.99, 2.99, 0.0);
+        $this->assertTrue($payment->isCompleted());
+    }
+
+    /**
+     * Verify the googlepay can charge part of the authorized amount and the payment state is updated accordingly.
+     *
+     * @test
+     */
+    public function partialChargeAfterAuthorization(): void
+    {
+        $googlepay          = $this->createGooglepayObjectFromToken($this->getTestToken());
+        /** @var Googlepay $googlepay */
+        $googlepay          = $this->unzer->createPaymentType($googlepay);
+        $authorization = $this->getUnzerObject()
+            ->performAuthorization(
+                $this->getLvpAuthorizationObject(),
+                $googlepay
+            );
+
+        $payment = $authorization->getPayment();
+        $this->assertAmounts($payment, 2.99, 0.0, 2.99, 0.0);
+        $this->assertTrue($payment->isPending());
+
+        $charge   = $this->unzer->performChargeOnPayment($payment->getId(), new Charge(1));
+        $payment1 = $charge->getPayment();
+        $this->assertAmounts($payment1, 1.99, 1, 2.99, 0.0);
+        $this->assertTrue($payment1->isPartlyPaid());
+
+        $charge   = $this->unzer->performChargeOnPayment($payment->getId(), new Charge(1));
+        $payment2 = $charge->getPayment();
+        $this->assertAmounts($payment2, 0.99, 2, 2.99, 0.0);
+        $this->assertTrue($payment2->isPartlyPaid());
+
+        $charge   = $this->unzer->performChargeOnPayment($payment->getId(), new Charge(0.99));
+        $payment3 = $charge->getPayment();
+        $this->assertAmounts($payment3, 00.0, 2.99, 2.99, 0.0);
+        $this->assertTrue($payment3->isCompleted());
+    }
+
+    /**
+     * Verify that an exception is thrown when trying to charge more than authorized.
+     *
+     * @test
+     */
+    public function exceptionShouldBeThrownWhenChargingMoreThenAuthorized(): void
+    {
+        $googlepay          = $this->createGooglepayObjectFromToken($this->getTestToken());
+        /** @var Googlepay $googlepay */
+        $googlepay          = $this->unzer->createPaymentType($googlepay);
+        $authorization = $this->getUnzerObject()
+            ->performAuthorization(
+                $this->getLvpAuthorizationObject(),
+                $googlepay
+            );
+        $payment       = $authorization->getPayment();
+        $this->assertAmounts($payment, 2.99, 0.0, 2.99, 0.0);
+        $this->assertTrue($payment->isPending());
+
+        $charge   = $this->unzer->performChargeOnPayment($payment->getId(), new Charge(1.99));
+        $payment1 = $charge->getPayment();
+        $this->assertAmounts($payment1, 1, 1.99, 2.99, 0.0);
+        $this->assertTrue($payment1->isPartlyPaid());
+
+        $this->expectException(UnzerApiException::class);
+        $this->expectExceptionCode(ApiResponseCodes::API_ERROR_CHARGED_AMOUNT_HIGHER_THAN_EXPECTED);
+        $this->unzer->performChargeOnPayment($payment->getId(), new Charge(2));
+    }
+
+    /**
+     * @test
+     */
+    public function fullCancelAfterCharge(): void
+    {
+        $googlepay    = $this->createGooglepayObjectFromToken($this->getTestToken());
+        /** @var Googlepay $googlepay */
+        $googlepay    = $this->unzer->createPaymentType($googlepay);
+        $charge = $this->getUnzerObject()
+            ->performCharge(
+                $this->getLvpChargeObject(),
+                $googlepay
+            );
+        $payment = $charge->getPayment();
+
+        $this->assertAmounts($payment, 0.0, 2.99, 2.99, 0.0);
+        $this->assertTrue($payment->isCompleted());
+
+        $this->unzer->cancelChargedPayment($payment);
+        $this->assertAmounts($payment, 0.0, 0.0, 2.99, 2.99);
+        $this->assertTrue($payment->isCanceled());
+    }
+
+    /** Creates an authorization request object with low value payment(lvp) set to avoid 3ds challenge.
+     *
+     * @return Authorization
+     */
+    protected function getLvpAuthorizationObject()
+    {
+        return (new Authorization(2.99, 'EUR', self::RETURN_URL))
+            ->setCardTransactionData(
+                (new CardTransactionData())->setExemptionType(ExemptionType::LOW_VALUE_PAYMENT)
+            );
+    }
+
+    /** Creates an charge request object with low value payment(lvp) set to avoid 3ds challenge.
+     *
+     * @return Charge
+     */
+    protected function getLvpChargeObject()
+    {
+        return (new Charge(2.99, 'EUR', self::RETURN_URL))
+            ->setCardTransactionData(
+                (new CardTransactionData())->setExemptionType(ExemptionType::LOW_VALUE_PAYMENT)
+            );
+    }
+
+    /**
+     * @param $googlePayToken
+     *
+     * @return Googlepay
+     */
+    protected function createGooglepayObjectFromToken($googlePayToken): Googlepay
+    {
+        $googlepay = (new Googlepay());
+        $this->assertNull($googlepay->getId());
+
+        $geoLocation = $googlepay->getGeoLocation();
+        $this->assertNull($geoLocation->getClientIp());
+        $this->assertNull($geoLocation->getCountryCode());
+
+        $signedKey = (new SignedKey())
+            ->setKeyValue($googlePayToken->intermediateSigningKey->signedKey->keyValue)
+            ->setKeyExpiration($googlePayToken->intermediateSigningKey->signedKey->keyExpiration);
+
+        $intermediateSigningKey = (new IntermediateSigningKey())
+            ->setSignedKey($signedKey)
+            ->setSignatures($googlePayToken->intermediateSigningKey->signatures);
+
+        $protocolVersion = $googlePayToken->protocolVersion;
+        $encryptedMessage = $googlePayToken->signedMessage->encryptedMessage;
+        $ephemeralPublicKey = $googlePayToken->signedMessage->ephemeralPublicKey;
+        $tag = $googlePayToken->signedMessage->tag;
+
+        $signedMessage = (new SignedMessage())
+            ->setEncryptedMessage($encryptedMessage)
+            ->setEphemeralPublicKey($ephemeralPublicKey)
+            ->setTag($tag);
+
+        $googlepay->setSignature($googlePayToken->signature)
+            ->setIntermediateSigningKey($intermediateSigningKey)
+            ->setProtocolVersion($protocolVersion)
+            ->setSignedMessage($signedMessage);
+
+        return $googlepay;
+    }
+
+    /**
+     * @return mixed
+     *
+     * @throws \Exception
+     */
+    protected function getTestToken()
+    {
+        $googlePayToken = json_decode(JsonProvider::getJsonFromFile('googlepay/googlepayToken.json'), false);
+        if (!empty($googlePayToken)) {
+            $googlePayToken->intermediateSigningKey->signedKey = json_decode($googlePayToken->intermediateSigningKey->signedKey);
+            $googlePayToken->signedMessage = json_decode($googlePayToken->signedMessage);
+        }
+        return $googlePayToken;
+    }
+}
diff --git a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/HirePurchaseTest.php b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/HirePurchaseTest.php
new file mode 100644
index 0000000..5e6a87c
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/HirePurchaseTest.php
@@ -0,0 +1,139 @@
+<?php
+
+/** @noinspection PhpUnhandledExceptionInspection */
+/** @noinspection PhpDocMissingThrowsInspection */
+/**
+ * This class defines integration tests to verify backwards compatibility with deprecated hire-purchase-direct-debit resource.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+
+namespace UnzerSDK\test\integration\PaymentTypes;
+
+use UnzerSDK\Exceptions\UnzerApiException;
+use UnzerSDK\Resources\AbstractUnzerResource;
+use UnzerSDK\Resources\PaymentTypes\InstallmentSecured;
+use UnzerSDK\Resources\TransactionTypes\Charge;
+use UnzerSDK\test\BaseIntegrationTest;
+use UnzerSDK\test\Helper\TestEnvironmentService;
+
+use function count;
+
+class HirePurchaseTest extends BaseIntegrationTest
+{
+    protected function setUp(): void
+    {
+        $this->getUnzerObject(TestEnvironmentService::getLegacyTestPrivateKey());
+    }
+
+    /**
+     * Verify, backwards compatibility regarding fetching payment type and map it to invoice secured class.
+     *
+     * @test
+     */
+    public function hddTypeShouldBeFetchable(): InstallmentSecured
+    {
+        // Mock a hdd Type
+        $date = $this->getTodaysDateString();
+        $requestData =
+            [
+                "iban" => "DE89370400440532013000",
+                "bic" => "COBADEFFXXX",
+                "accountHolder" => "Max Mustermann",
+                "invoiceDueDate" => $date,
+                "numberOfRates" => 3,
+                "invoiceDate" => $date,
+                "dayOfPurchase" => $date,
+                "orderDate" => $date,
+                "totalPurchaseAmount" => 119,
+                "totalInterestAmount" => 0.96,
+                "totalAmount" => 119.96,
+                "effectiveInterestRate" => 4.99,
+                "nominalInterestRate" => 4.92,
+                "feeFirstRate" => 0,
+                "feePerRate" => 0,
+                "monthlyRate" => 39.99,
+                "lastRate" => 39.98,
+        ];
+
+        $payload = json_encode($requestData);
+        $hddMock = $this->getMockBuilder(InstallmentSecured::class)
+            ->setMethods(['getUri', 'jsonSerialize'])
+            ->getMock();
+        $hddMock->method('getUri')->willReturn('/types/hire-purchase-direct-debit');
+        $hddMock->method('jsonSerialize')->willReturn($payload);
+
+        // When
+        /** @var InstallmentSecured $hddMock */
+        $this->unzer->createPaymentType($hddMock);
+        $this->assertMatchesRegularExpression('/^s-hdd-[.]*/', $hddMock->getId());
+
+        // Then
+        $fetchedType = $this->unzer->fetchPaymentType($hddMock->getId());
+        $this->assertInstanceOf(InstallmentSecured::class, $fetchedType);
+        $this->assertMatchesRegularExpression('/^s-hdd-[.]*/', $fetchedType->getId());
+
+        return $fetchedType;
+    }
+
+    /**
+     * Verify fetched hdd type can be authorized and charged
+     *
+     * @test
+     *
+     * @depends hddTypeShouldBeFetchable
+     *
+     * @param InstallmentSecured $hddType fetched hdd type.
+     *
+     * @return AbstractUnzerResource|Charge
+     *
+     * @throws UnzerApiException
+     */
+    public function hddTypeAuthorizeAndCharge(InstallmentSecured $hddType)
+    {
+        $customer = $this->getMaximumCustomer();
+        $basket = $this->createBasket();
+
+        $auth = $hddType->authorize(119.00, 'EUR', 'https://unzer.com', $customer, null, null, $basket);
+        $charge = $auth->getPayment()->charge();
+        $this->assertNotNull($auth);
+        $this->assertNotEmpty($auth->getId());
+        $this->assertTrue($auth->isSuccess());
+
+        return $charge;
+    }
+
+    /**
+     * Verify fetched hdd payment can be shipped.
+     *
+     * @test
+     *
+     * @depends hddTypeAuthorizeAndCharge
+     */
+    public function hddTypeShouldBeShippable(Charge $hddCharge)
+    {
+        $invoiceId = 'i' . self::generateRandomId();
+        $ship = $this->unzer->ship($hddCharge->getPayment(), $invoiceId);
+
+        $this->assertNotNull($ship);
+        return $hddCharge;
+    }
+
+    /**
+     * Verify full cancel of charged HP after shipment.
+     *
+     * @test
+     *
+     * @depends hddTypeAuthorizeAndCharge
+     */
+    public function hddChargeCanBePartiallyCancledBeforeShipment(Charge $hddCharge): void
+    {
+        $payment = $hddCharge->getPayment();
+
+        $cancel1 = $payment->cancelAmount(66, null, null, 60, 6);
+        $cancel2 = $payment->cancelAmount(43, null, null, 40, 3);
+        $this->assertGreaterThan(0, count($cancel1));
+        $this->assertGreaterThan(0, count($cancel2));
+    }
+}
diff --git a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/IdealTest.php b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/IdealTest.php
index 8770be0..f155904 100644
--- a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/IdealTest.php
+++ b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/IdealTest.php
@@ -1,34 +1,20 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines integration tests to verify interface and functionality of the payment method Ideal.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\integration\PaymentTypes
  */
+
 namespace UnzerSDK\test\integration\PaymentTypes;
 
 use UnzerSDK\Constants\ApiResponseCodes;
 use UnzerSDK\Exceptions\UnzerApiException;
 use UnzerSDK\Resources\PaymentTypes\Ideal;
+use UnzerSDK\Resources\TransactionTypes\Charge;
 use UnzerSDK\test\BaseIntegrationTest;
 
 class IdealTest extends BaseIntegrationTest
@@ -56,6 +42,7 @@ public function idealShouldBeCreatable(): Ideal
      * @test
      *
      * @param Ideal $ideal
+     *
      * @depends idealShouldBeCreatable
      */
     public function idealShouldThrowExceptionOnAuthorize(Ideal $ideal): void
@@ -70,25 +57,33 @@ public function idealShouldThrowExceptionOnAuthorize(Ideal $ideal): void
      * Verify that ideal payment type is chargeable.
      *
      * @test
+     *
      * @depends idealShouldBeCreatable
      *
      * @param Ideal $ideal
      */
     public function idealShouldBeChargeable(Ideal $ideal): void
     {
-        $charge = $ideal->charge(1.0, 'EUR', self::RETURN_URL);
+        $charge = new Charge(1.0, 'EUR', self::RETURN_URL);
+        $maximumCustomer = $this->getMaximumCustomer();
+        $maximumCustomer->getBillingAddress()
+            ->setCountry('NL');
+        $maximumCustomer->getShippingAddress()
+            ->setCountry('NL');
+        $this->getUnzerObject()->performCharge($charge, $ideal, $maximumCustomer);
         $this->assertNotNull($charge);
         $this->assertNotNull($charge->getId());
         $this->assertNotEmpty($charge->getRedirectUrl());
 
         $fetchCharge = $this->unzer->fetchChargeById($charge->getPayment()->getId(), $charge->getId());
-        $this->assertEquals($charge->expose(), $fetchCharge->expose());
+        $this->assertEquals($charge->setCard3ds(false)->expose(), $fetchCharge->expose());
     }
 
     /**
      * Verify ideal payment type can be fetched.
      *
      * @test
+     *
      * @depends idealShouldBeCreatable
      *
      * @param Ideal $ideal
diff --git a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/InstallmentSecuredTest.php b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/InstallmentSecuredTest.php
index ddb6d4c..07ef3d0 100644
--- a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/InstallmentSecuredTest.php
+++ b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/InstallmentSecuredTest.php
@@ -1,35 +1,19 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines integration tests to verify interface and
  * functionality of the payment method Installment Secured.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\integration\PaymentTypes
  */
+
 namespace UnzerSDK\test\integration\PaymentTypes;
 
 use UnzerSDK\Constants\ApiResponseCodes;
 use UnzerSDK\Exceptions\UnzerApiException;
-use UnzerSDK\Resources\AbstractUnzerResource;
 use UnzerSDK\Resources\Customer;
 use UnzerSDK\Resources\CustomerFactory;
 use UnzerSDK\Resources\EmbeddedResources\Address;
@@ -37,17 +21,24 @@
 use UnzerSDK\Resources\PaymentTypes\InstallmentSecured;
 use UnzerSDK\Resources\TransactionTypes\Charge;
 use UnzerSDK\test\BaseIntegrationTest;
+use UnzerSDK\test\Helper\TestEnvironmentService;
+
 use function count;
 
 class InstallmentSecuredTest extends BaseIntegrationTest
 {
+    protected function setUp(): void
+    {
+        $this->getUnzerObject(TestEnvironmentService::getLegacyTestPrivateKey());
+    }
+
     /**
      * Verify the following features:
      * 1. fetching instalment plans.
      * 2. selecting plan
-     * 3. create hp resource
-     * 4. fetch hp resource
-     * 5 test update hp resource
+     * 3. create ins resource
+     * 4. fetch ins resource
+     * 5 test update ins resource
      *
      * @test
      */
@@ -76,100 +67,11 @@ public function instalmentPlanShouldBeSelectable(): void
         $this->assertEquals($insClone->expose(), $ins->expose());
     }
 
-    /**
-     * Verify, backwards compatibility regarding fetching payment type and map it to invoice secured class.
-     *
-     * @test
-     */
-    public function hddTypeShouldBeFetchable(): InstallmentSecured
-    {
-        // Mock a hdd Type
-        $date = $this->getTodaysDateString();
-        $requestData =
-            [
-                "iban" =>"DE89370400440532013000",
-                "bic" => "COBADEFFXXX",
-                "accountHolder" => "Max Mustermann",
-                "invoiceDueDate" => $date,
-                "numberOfRates" => 3,
-                "invoiceDate" => $date,
-                "dayOfPurchase" => $date,
-                "orderDate" => $date,
-                "totalPurchaseAmount" => 119,
-                "totalInterestAmount" => 0.96,
-                "totalAmount" => 119.96,
-                "effectiveInterestRate" => 4.99,
-                "nominalInterestRate" => 4.92,
-                "feeFirstRate" => 0,
-                "feePerRate" => 0,
-                "monthlyRate" => 39.99,
-                "lastRate" => 39.98,
-        ];
-
-        $payload = json_encode($requestData);
-        $hddMock = $this->getMockBuilder(InstallmentSecured::class)
-            ->setMethods(['getUri', 'jsonSerialize'])
-            ->getMock();
-        $hddMock->method('getUri')->willReturn('/types/hire-purchase-direct-debit');
-        $hddMock->method('jsonSerialize')->willReturn($payload);
-
-        // When
-        /** @var InstallmentSecured $insType */
-        $this->unzer->createPaymentType($hddMock);
-        $this->assertRegExp('/^s-hdd-[.]*/', $hddMock->getId());
-
-        // Then
-        $fetchedType = $this->unzer->fetchPaymentType($hddMock->getId());
-        $this->assertInstanceOf(InstallmentSecured::class, $fetchedType);
-        $this->assertRegExp('/^s-hdd-[.]*/', $fetchedType->getId());
-
-        return $fetchedType;
-    }
-
-    /**
-     * Verify fetched hdd type can be authorized and charged
-     *
-     * @test
-     * @depends hddTypeShouldBeFetchable
-     *
-     * @param InstallmentSecured $hddType fetched ins type.
-     *
-     * @return AbstractUnzerResource|Charge
-     *
-     * @throws UnzerApiException
-     */
-    public function hddTypeAuthorizeAndCharge(InstallmentSecured $hddType)
-    {
-        $customer = $this->getMaximumCustomer();
-        $basket = $this->createBasket();
-
-        $auth = $hddType->authorize(119.00, 'EUR', 'https://unzer.com', $customer, null, null, $basket);
-        $charge = $auth->getPayment()->charge();
-        $this->assertNotNull($auth);
-        $this->assertNotEmpty($auth->getId());
-        $this->assertTrue($auth->isSuccess());
-
-        return $charge;
-    }
-
-    /**
-     * Verify fetched hdd payment can be shipped.
-     *
-     * @test
-     * @depends hddTypeAuthorizeAndCharge
-     */
-    public function insTypeShouldBeShippable(Charge $hddCharge)
-    {
-        $invoiceId = 'i' . self::generateRandomId();
-        $ship = $this->unzer->ship($hddCharge->getPayment(), $invoiceId);
-
-        $this->assertNotNull($ship);
-    }
-
     /**
      * Verify Installment Secured authorization (positive and negative).
      *
      * @test
+     *
      * @dataProvider CustomerRankingDataProvider
      *
      * @param $firstname
@@ -189,7 +91,7 @@ public function installmentSecuredAuthorize($firstname, $lastname, $errorCode):
 
         try {
             $authorize = $ins->authorize(119.0, 'EUR', self::RETURN_URL, $customer, null, null, $basket);
-            if ($errorCode!== null) {
+            if ($errorCode !== null) {
                 $this->assertTrue(false, 'Expected error for negative ranking test.');
             }
             $this->assertNotEmpty($authorize->getId());
@@ -275,8 +177,6 @@ public function verifyShippingAChargedInstallmentSecured(): void
      * Verify full cancel of charged HP.
      *
      * @test
-     *
-     * @depends verifyChargingAnInitializedInstallmentSecured
      */
     public function verifyChargeAndFullCancelAnInitializedInstallmentSecured(): void
     {
@@ -300,8 +200,6 @@ public function verifyChargeAndFullCancelAnInitializedInstallmentSecured(): void
      * Verify full cancel of charged HP.
      *
      * @test
-     *
-     * @depends verifyChargingAnInitializedInstallmentSecured
      */
     public function verifyPartlyCancelChargedInstallmentSecured(): void
     {
@@ -326,8 +224,6 @@ public function verifyPartlyCancelChargedInstallmentSecured(): void
      * Verify full cancel of charged HP after shipment.
      *
      * @test
-     *
-     * @depends verifyChargingAnInitializedInstallmentSecured
      */
     public function verifyChargeAndFullCancelAnInitializedInstallmentSecuredAfterShipment(): void
     {
@@ -343,9 +239,9 @@ public function verifyChargeAndFullCancelAnInitializedInstallmentSecuredAfterShi
         $authorize = $ins->authorize(119.0, 'EUR', self::RETURN_URL, $this->getCustomer(), null, null, $basket = $this->createBasket());
         $payment = $authorize->getPayment();
 
-        $hddCharge = $payment->charge();
+        $charge = $payment->charge();
         $invoiceId = 'i' . self::generateRandomId();
-        $ship = $this->unzer->ship($hddCharge->getPayment(), $invoiceId);
+        $ship = $this->unzer->ship($charge->getPayment(), $invoiceId);
         $this->assertNotNull($ship);
 
         $cancel = $payment->cancelAmount();
@@ -356,8 +252,6 @@ public function verifyChargeAndFullCancelAnInitializedInstallmentSecuredAfterShi
      * Verify full cancel of charged HP after shipment.
      *
      * @test
-     *
-     * @depends verifyChargingAnInitializedInstallmentSecured
      */
     public function verifyPartlyCancelChargedInstallmentSecuredAfterShipment(): void
     {
@@ -373,9 +267,9 @@ public function verifyPartlyCancelChargedInstallmentSecuredAfterShipment(): void
         $authorize = $ins->authorize(119.0, 'EUR', self::RETURN_URL, $this->getCustomer(), null, null, $basket = $this->createBasket());
         $payment = $authorize->getPayment();
 
-        $hddCharge = $payment->charge();
+        $charge = $payment->charge();
         $invoiceId = 'i' . self::generateRandomId();
-        $ship = $this->unzer->ship($hddCharge->getPayment(), $invoiceId);
+        $ship = $this->unzer->ship($charge->getPayment(), $invoiceId);
         $this->assertNotNull($ship);
 
         $cancel = $payment->cancelAmount(59.5, null, null, 50.0, 9.5);
diff --git a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/InvoiceGuaranteedTest.php b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/InvoiceGuaranteedTest.php
new file mode 100644
index 0000000..54b75d8
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/InvoiceGuaranteedTest.php
@@ -0,0 +1,91 @@
+<?php
+
+/** @noinspection PhpUnhandledExceptionInspection */
+/** @noinspection PhpDocMissingThrowsInspection */
+/**
+ * This class defines integration tests to verify interface and functionality of the payment method Invoice Secured.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+
+namespace UnzerSDK\test\integration\PaymentTypes;
+
+use UnzerSDK\Exceptions\UnzerApiException;
+use UnzerSDK\Resources\PaymentTypes\InvoiceSecured;
+use UnzerSDK\Resources\TransactionTypes\Charge;
+use UnzerSDK\test\BaseIntegrationTest;
+use UnzerSDK\test\Helper\TestEnvironmentService;
+
+/**
+ * @deprecated since 1.2.0.0 PaylaterInvoice should be used instead in the future.
+ */
+class InvoiceGuaranteedTest extends BaseIntegrationTest
+{
+    protected function setUp(): void
+    {
+        $this->getUnzerObject(TestEnvironmentService::getLegacyTestPrivateKey());
+    }
+
+    /**
+     * Verify, backwards compatibility regarding fetching payment type and map it to invoice secured class.
+     *
+     * @test
+     */
+    public function ivgTypeShouldBeFetchable(): InvoiceSecured
+    {
+        $ivgMock = $this->getMockBuilder(InvoiceSecured::class)->setMethods(['getUri'])->getMock();
+        $ivgMock->method('getUri')->willReturn('/types/invoice-guaranteed');
+
+        /** @var InvoiceSecured $ivgType */
+        $ivgType = $this->unzer->createPaymentType($ivgMock);
+        $this->assertInstanceOf(InvoiceSecured::class, $ivgType);
+        $this->assertMatchesRegularExpression('/^s-ivg-[.]*/', $ivgType->getId());
+
+        $fetchedType = $this->unzer->fetchPaymentType($ivgType->getId());
+        $this->assertInstanceOf(InvoiceSecured::class, $fetchedType);
+        $this->assertMatchesRegularExpression('/^s-ivg-[.]*/', $fetchedType->getId());
+
+        return $fetchedType;
+    }
+
+    /**
+     * Verify fetched ivg type can be charged
+     *
+     * @test
+     *
+     * @depends ivgTypeShouldBeFetchable
+     *
+     * @param InvoiceSecured $ivgType fetched ivg type.
+     *
+     * @throws UnzerApiException
+     */
+    public function ivgTypeShouldBeChargable(InvoiceSecured $ivgType)
+    {
+        $customer = $this->getMaximumCustomer();
+        $charge = $ivgType->charge(100.00, 'EUR', 'https://unzer.com', $customer);
+
+        $this->assertNotNull($charge);
+        $this->assertNotEmpty($charge->getId());
+        $this->assertTrue($charge->isPending());
+
+        return $charge;
+    }
+
+    /**
+     * Verify fetched ivg type can be shipped.
+     *
+     * @test
+     *
+     * @depends ivgTypeShouldBeChargable
+     */
+    public function ivgTypeShouldBeShippable(Charge $ivgCharge)
+    {
+        $invoiceId = 'i' . self::generateRandomId();
+
+        $ship = $this->unzer->ship($ivgCharge->getPayment(), $invoiceId);
+        // expect Payment to be pending after shipment.
+        $this->assertTrue($ship->getPayment()->isPending());
+        $this->assertNotNull($ship);
+    }
+}
diff --git a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/InvoiceSecuredTest.php b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/InvoiceSecuredTest.php
index 8926884..f76607e 100644
--- a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/InvoiceSecuredTest.php
+++ b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/InvoiceSecuredTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines integration tests to verify interface and functionality of the payment method Invoice Secured.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\integration\PaymentTypes
  */
+
 namespace UnzerSDK\test\integration\PaymentTypes;
 
 use UnzerSDK\Constants\ApiResponseCodes;
@@ -32,9 +17,18 @@
 use UnzerSDK\Resources\PaymentTypes\InvoiceSecured;
 use UnzerSDK\Resources\TransactionTypes\Charge;
 use UnzerSDK\test\BaseIntegrationTest;
+use UnzerSDK\test\Helper\TestEnvironmentService;
 
+/**
+ * @deprecated since 1.2.0.0 PaylaterInvoice should be used instead in the future.
+ */
 class InvoiceSecuredTest extends BaseIntegrationTest
 {
+    protected function setUp(): void
+    {
+        $this->getUnzerObject(TestEnvironmentService::getLegacyTestPrivateKey());
+    }
+
     /**
      * Verifies Invoice Secured payment type can be created.
      *
@@ -55,66 +49,6 @@ public function invoiceSecuredTypeShouldBeCreatableAndFetchable(): InvoiceSecure
 
         return $invoice;
     }
-    
-    /**
-     * Verify, backwards compatibility regarding fetching payment type and map it to invoice secured class.
-     *
-     * @test
-     */
-    public function ivgTypeShouldBeFechable(): InvoiceSecured
-    {
-        $ivgMock = $this->getMockBuilder(InvoiceSecured::class)->setMethods(['getUri'])->getMock();
-        $ivgMock->method('getUri')->willReturn('/types/invoice-guaranteed');
-
-        /** @var InvoiceSecured $ivgType */
-        $ivgType = $this->unzer->createPaymentType($ivgMock);
-        $this->assertInstanceOf(InvoiceSecured::class, $ivgType);
-        $this->assertRegExp('/^s-ivg-[.]*/', $ivgType->getId());
-
-        $fetchedType = $this->unzer->fetchPaymentType($ivgType->getId());
-        $this->assertInstanceOf(InvoiceSecured::class, $fetchedType);
-        $this->assertRegExp('/^s-ivg-[.]*/', $fetchedType->getId());
-
-        return $fetchedType;
-    }
-
-    /**
-     * Verify fetched ivg type can be charged
-     *
-     * @test
-     * @depends ivgTypeShouldBeFechable
-     *
-     * @param InvoiceSecured $ivgType fetched ivg type.
-     *
-     * @throws UnzerApiException
-     */
-    public function ivgTypeShouldBeChargable(InvoiceSecured $ivgType)
-    {
-        $customer = $this->getMaximumCustomer();
-        $charge = $ivgType->charge(100.00, 'EUR', 'https://unzer.com', $customer);
-
-        $this->assertNotNull($charge);
-        $this->assertNotEmpty($charge->getId());
-        $this->assertTrue($charge->isPending());
-
-        return $charge;
-    }
-
-    /**
-     * Verify fetched ivg type can be shipped.
-     *
-     * @test
-     * @depends ivgTypeShouldBeChargable
-     */
-    public function ivgTypeShouldBeShippable(Charge $ivgCharge)
-    {
-        $invoiceId = 'i' . self::generateRandomId();
-
-        $ship = $this->unzer->ship($ivgCharge->getPayment(), $invoiceId);
-        // expect Payment to be pending after shipment.
-        $this->assertTrue($ship->getPayment()->isPending());
-        $this->assertNotNull($ship);
-    }
 
     /**
      * Verify Invoice Secured is not authorizable.
@@ -122,6 +56,7 @@ public function ivgTypeShouldBeShippable(Charge $ivgCharge)
      * @test
      *
      * @param InvoiceSecured $invoice
+     *
      * @depends invoiceSecuredTypeShouldBeCreatableAndFetchable
      */
     public function verifyInvoiceIsNotAuthorizable(InvoiceSecured $invoice): void
@@ -136,6 +71,7 @@ public function verifyInvoiceIsNotAuthorizable(InvoiceSecured $invoice): void
      * Verify Invoice Secured needs a customer object
      *
      * @test
+     *
      * @depends invoiceSecuredTypeShouldBeCreatableAndFetchable
      *
      * @param InvoiceSecured $invoiceSecured
@@ -151,6 +87,7 @@ public function invoiceSecuredShouldRequiresCustomer(InvoiceSecured $invoiceSecu
      * Verify Invoice Secured is chargeable.
      *
      * @test
+     *
      * @depends invoiceSecuredTypeShouldBeCreatableAndFetchable
      *
      * @param InvoiceSecured $invoiceSecured
@@ -166,10 +103,51 @@ public function invoiceSecuredRequiresBasket(InvoiceSecured $invoiceSecured): vo
         $invoiceSecured->charge(1.0, 'EUR', self::RETURN_URL, $customer);
     }
 
+    /**
+     * Verify charge with Invoice Secured throws an error when invalid ip is set.
+     *
+     * @test
+     */
+    public function invoiceSecuredRequiresValidClientIpForCharge(): void
+    {
+        $clientIp = '123.456.789.123';
+        $this->unzer->setClientIp($clientIp);
+
+        /** @var InvoiceSecured $invoiceSecured */
+        $invoiceSecured = $this->unzer->createPaymentType(new InvoiceSecured());
+        $this->unzer->setClientIp(null); // Ensure that the invalid ip is only used for type creation.
+        $this->assertEquals($clientIp, $invoiceSecured->getGeoLocation()->getClientIp());
+
+        $customer = $this->getMaximumCustomer();
+        $customer->setShippingAddress($customer->getBillingAddress());
+        $basket = $this->createBasket();
+
+        $this->expectException(UnzerApiException::class);
+        $this->expectExceptionCode(ApiResponseCodes::CORE_INVALID_IP_NUMBER);
+
+        $invoiceSecured->charge(119.0, 'EUR', self::RETURN_URL, $customer, $basket->getOrderId(), null, $basket);
+    }
+
+    /**
+     * Verify creating a payment type with client ip header set, will overwrite the clientIp of the API resource.
+     *
+     * @test
+     */
+    public function verifySettingClientIpViaHeaderWillOverwriteClientIpOfTypeResource(): void
+    {
+        $clientIp = 'xxx.xxx.xxx.xxx';
+        $this->unzer->setClientIp($clientIp);
+
+        /** @var InvoiceSecured $invoiceSecured */
+        $invoiceSecured = $this->unzer->createPaymentType(new InvoiceSecured());
+        $this->assertEquals($clientIp, $invoiceSecured->getGeoLocation()->getClientIp());
+    }
+
     /**
      * Verify Invoice Secured is chargeable.
      *
      * @test
+     *
      * @depends invoiceSecuredTypeShouldBeCreatableAndFetchable
      *
      * @param InvoiceSecured $invoiceSecured
@@ -325,6 +303,7 @@ public function verifyInvoiceSecuredShipmentWithPreSetInvoiceId(): void
      * @test
      *
      * @param Charge $charge
+     *
      * @depends invoiceSecuredShouldBeChargeable
      */
     public function verifyInvoiceChargeCanBeCanceled(Charge $charge): Charge
@@ -341,6 +320,7 @@ public function verifyInvoiceChargeCanBeCanceled(Charge $charge): Charge
      * @test
      *
      * @param Charge $charge
+     *
      * @depends verifyInvoiceChargeCanBeCanceled
      */
     public function verifyInvoiceChargeCanBeCancelledWoAmount(Charge $charge): void
@@ -358,6 +338,7 @@ public function verifyInvoiceChargeCanBeCancelledWoAmount(Charge $charge): void
      * @test
      *
      * @param Charge $charge
+     *
      * @depends invoiceSecuredShouldBeChargeable
      */
     public function verifyInvoiceChargeCanNotBeCancelledWoReasonCode(Charge $charge): void
diff --git a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/InvoiceTest.php b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/InvoiceTest.php
index b023e12..443b833 100644
--- a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/InvoiceTest.php
+++ b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/InvoiceTest.php
@@ -1,38 +1,29 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines integration tests to verify interface and functionality of the payment method invoice.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\integration\PaymentTypes
  */
+
 namespace UnzerSDK\test\integration\PaymentTypes;
 
 use UnzerSDK\Constants\ApiResponseCodes;
 use UnzerSDK\Exceptions\UnzerApiException;
 use UnzerSDK\Resources\PaymentTypes\Invoice;
 use UnzerSDK\test\BaseIntegrationTest;
+use UnzerSDK\test\Helper\TestEnvironmentService;
 
 class InvoiceTest extends BaseIntegrationTest
 {
+    protected function setUp(): void
+    {
+        $this->getUnzerObject(TestEnvironmentService::getLegacyTestPrivateKey());
+    }
+
     /**
      * Verifies invoice payment type can be created.
      *
diff --git a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/KlarnaTest.php b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/KlarnaTest.php
new file mode 100644
index 0000000..b704dea
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/KlarnaTest.php
@@ -0,0 +1,93 @@
+<?php
+
+/** @noinspection PhpUnhandledExceptionInspection */
+/** @noinspection PhpDocMissingThrowsInspection */
+/**
+ * This class defines integration tests to verify interface and
+ * functionality of the payment method klarna.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+
+namespace UnzerSDK\test\integration\PaymentTypes;
+
+use UnzerSDK\Exceptions\UnzerApiException;
+use UnzerSDK\Resources\PaymentTypes\Klarna;
+use UnzerSDK\Resources\TransactionTypes\Authorization;
+use UnzerSDK\Resources\TransactionTypes\Charge;
+use UnzerSDK\test\BaseIntegrationTest;
+
+class KlarnaTest extends BaseIntegrationTest
+{
+    /**
+     * Verify klarna can be created.
+     *
+     * @test
+     *
+     * @return Klarna
+     */
+    public function klarnaShouldBeCreatableAndFetchable(): Klarna
+    {
+        $klarna = $this->unzer->createPaymentType(new Klarna());
+        $this->assertInstanceOf(Klarna::class, $klarna);
+        $this->assertNotNull($klarna->getId());
+
+        /** @var Klarna $fetchedKlarna */
+        $fetchedKlarna = $this->unzer->fetchPaymentType($klarna->getId());
+        $this->assertInstanceOf(Klarna::class, $fetchedKlarna);
+        $this->assertEquals($klarna->expose(), $fetchedKlarna->expose());
+        $this->assertNotEmpty($fetchedKlarna->getGeoLocation()->getClientIp());
+
+        return $fetchedKlarna;
+    }
+
+    /**
+     * Verify klarna is not authorizable.
+     *
+     * @test
+     *
+     * @param Klarna $klarna
+     *
+     * @depends klarnaShouldBeCreatableAndFetchable
+     */
+    public function klarnaShouldBeAuthorizable(Klarna $klarna): void
+    {
+        $authorizationInstance = (new Authorization(99.99, 'EUR', self::RETURN_URL))
+            ->setTermsAndConditionUrl('https://www.unzer.com/de')
+            ->setPrivacyPolicyUrl('https://www.unzer.com/de');
+
+        $customer = $this->getMaximumCustomerInclShippingAddress();
+        $customer->setLanguage('de');
+
+        $basket = $this->createV2Basket();
+        $authorization = $this->unzer->performAuthorization($authorizationInstance, $klarna, $customer, null, $basket);
+        $this->assertNotNull($authorization);
+        $this->assertNotEmpty($authorization->getId());
+        $this->assertNotEmpty($authorization->getRedirectUrl());
+    }
+
+    /**
+     * Verify klarna is not directly chargeable.
+     *
+     * @test
+     *
+     * @param Klarna $klarna
+     *
+     * @depends klarnaShouldBeCreatableAndFetchable
+     */
+    public function klarnaShouldNotBeDirectlyChargable(Klarna $klarna)
+    {
+        $chargeInstance = (new Charge(99.99, 'EUR', self::RETURN_URL))
+            ->setTermsAndConditionUrl('https://www.unzer.com/de')
+            ->setPrivacyPolicyUrl('https://www.unzer.com/de');
+
+        $customer = $this->getMaximumCustomerInclShippingAddress();
+        $customer->setLanguage('de');
+
+        $basket = $this->createV2Basket();
+
+        $this->expectException(UnzerApiException::class);
+        $this->unzer->performCharge($chargeInstance, $klarna, $customer, null, $basket);
+    }
+}
diff --git a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/PISTest.php b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/PISTest.php
index 6d9324f..7646bd8 100644
--- a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/PISTest.php
+++ b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/PISTest.php
@@ -1,30 +1,15 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines integration tests to verify interface and
  * functionality of the payment method PIS.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\tests/integration/payment_types
  */
+
 namespace UnzerSDK\test\integration\PaymentTypes;
 
 use UnzerSDK\Constants\ApiResponseCodes;
@@ -64,6 +49,7 @@ public function pisShouldBeCreatableAndFetchable(): PIS
      * @param PIS $pis
      *
      * @return Charge
+     *
      * @depends pisShouldBeCreatableAndFetchable
      */
     public function pisShouldBeAbleToCharge(PIS $pis): Charge
@@ -82,6 +68,7 @@ public function pisShouldBeAbleToCharge(PIS $pis): Charge
      * @test
      *
      * @param PIS $pis
+     *
      * @depends pisShouldBeCreatableAndFetchable
      */
     public function pisShouldNotBeAuthorizable(PIS $pis): void
diff --git a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/PayUTest.php b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/PayUTest.php
new file mode 100644
index 0000000..5665137
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/PayUTest.php
@@ -0,0 +1,99 @@
+<?php
+
+/**
+ * This class defines integration tests to verify interface and
+ * functionality of the payment method PayUTest.
+ *
+ * @link     https://docs.unzer.com/
+ *
+ */
+
+/** @noinspection PhpUnhandledExceptionInspection */
+
+/** @noinspection PhpDocMissingThrowsInspection */
+
+namespace PaymentTypes;
+
+use UnzerSDK\Constants\ApiResponseCodes;
+use UnzerSDK\Exceptions\UnzerApiException;
+use UnzerSDK\Resources\PaymentTypes\PayU;
+use UnzerSDK\Resources\TransactionTypes\Authorization;
+use UnzerSDK\Resources\TransactionTypes\Charge;
+use UnzerSDK\test\BaseIntegrationTest;
+
+class PayUTest extends BaseIntegrationTest
+{
+    /**
+     * Verify PayU can be created.
+     *
+     * @test
+     *
+     * @return PayU
+     */
+    public function payUShouldBeCreatableAndFetchable(): PayU
+    {
+        $paymentType = $this->unzer->createPaymentType(new PayU());
+        $this->assertInstanceOf(PayU::class, $paymentType);
+        $this->assertNotNull($paymentType->getId());
+
+        /** @var PayU $fetchedType */
+        $fetchedType = $this->unzer->fetchPaymentType($paymentType->getId());
+        $this->assertInstanceOf(PayU::class, $fetchedType);
+        $this->assertEquals($paymentType->expose(), $fetchedType->expose());
+        $this->assertNotEmpty($fetchedType->getGeoLocation()->getClientIp());
+
+        return $fetchedType;
+    }
+
+    /**
+     * Verify PayU is chargeable.
+     *
+     * @test
+     *
+     * @param PayU  $paymentType
+     * @param mixed $currency
+     *
+     * @return Charge
+     *
+     * @dataProvider supportedCurrencies
+     *
+     * @depends      payUShouldBeCreatableAndFetchable
+     */
+    public function payUShouldBeAbleToCharge($currency, PayU $paymentType): Charge
+    {
+        $charge = new Charge(100.0, $currency, self::RETURN_URL);
+        $this->getUnzerObject()->performCharge($charge, $paymentType);
+
+        $this->assertNotNull($charge);
+        $this->assertNotEmpty($charge->getId());
+        $this->assertNotEmpty($charge->getRedirectUrl());
+
+        return $charge;
+    }
+
+    /**
+     * Verify payU is not authorizable.
+     *
+     * @test
+     *
+     * @param PayU $payU
+     *
+     * @depends payUShouldBeCreatableAndFetchable
+     */
+    public function payUShouldNotBeAuthorizable(PayU $payU): void
+    {
+        $this->expectException(UnzerApiException::class);
+        $this->expectExceptionCode(ApiResponseCodes::API_ERROR_TRANSACTION_AUTHORIZE_NOT_ALLOWED);
+
+        $authorization = new Authorization(100.0, 'CHF', self::RETURN_URL);
+        $this->unzer->performAuthorization($authorization, $payU);
+    }
+
+    public function supportedCurrencies(): array
+    {
+        return [
+            'PLN' => ['PLN'],
+            'CZK' => ['CZK']
+        ];
+    }
+}
diff --git a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/PaylaterDirectDebitTest.php b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/PaylaterDirectDebitTest.php
new file mode 100644
index 0000000..6d21cd2
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/PaylaterDirectDebitTest.php
@@ -0,0 +1,198 @@
+<?php
+
+/** @noinspection PhpUnhandledExceptionInspection */
+/** @noinspection PhpDocMissingThrowsInspection */
+/**
+ * This class defines integration tests to verify interface and
+ * functionality of the payment method Paylater Direct Debit.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+
+namespace PaymentTypes;
+
+use UnzerSDK\Exceptions\UnzerApiException;
+use UnzerSDK\Resources\Customer;
+use UnzerSDK\Resources\CustomerFactory;
+use UnzerSDK\Resources\EmbeddedResources\Address;
+use UnzerSDK\Resources\PaymentTypes\PaylaterDirectDebit;
+use UnzerSDK\Resources\TransactionTypes\Authorization;
+use UnzerSDK\Resources\TransactionTypes\Cancellation;
+use UnzerSDK\Resources\TransactionTypes\Charge;
+use UnzerSDK\test\BaseIntegrationTest;
+
+class PaylaterDirectDebitTest extends BaseIntegrationTest
+{
+    /**
+     * Verify that Paylater Direct Debit type can be created and fetched.
+     *
+     * @test
+     */
+    public function typeCanBeCreatedAndFetched(): void
+    {
+        $pdd = new PaylaterDirectDebit('DE89370400440532013000', 'Max Mustermann');
+
+        // then
+        $this->unzer->createPaymentType($pdd);
+        $this->assertNotEmpty($pdd->getId());
+        $fetchedIns = $this->unzer->fetchPaymentType($pdd->getId());
+        $this->assertNotEmpty($fetchedIns->getId());
+    }
+
+    /**
+     * Verify Paylater Direct Debit authorization (positive and negative).
+     *
+     * @test
+     *
+     * @param $firstname
+     * @param $lastname
+     * @param $errorCode
+     */
+    public function PaylaterDirectDebitAuthorize(): Authorization
+    {
+        $authorize = $this->createAuthorizeTransaction();
+        $this->assertNotEmpty($authorize->getId());
+        $this->assertTrue($authorize->isSuccess());
+
+        return $authorize;
+    }
+
+    /** Performs a basic authorize transaction for Paylater invoice with amount 99.99 to set up test for follow-up transactions.
+     *
+     * @return Authorization
+     *
+     * @throws UnzerApiException
+     */
+    protected function createAuthorizeTransaction(): Authorization
+    {
+        $pdd = new PaylaterDirectDebit('DE89370400440532013000', 'Peter Mustermann');
+
+        $this->unzer->createPaymentType($pdd);
+        $customer = $this->getCustomer()->setFirstname('Peter')->setLastname('Mustermann');
+        $basket = $this->createBasket();
+
+        $authorization = new Authorization(99.99, 'EUR', self::RETURN_URL);
+        return $this->getUnzerObject()->performAuthorization($authorization, $pdd, $customer, null, $basket);
+    }
+
+    /**
+     * @return Customer
+     */
+    public function getCustomer(): Customer
+    {
+        $customer = CustomerFactory::createCustomer('Manuel', 'Weißmann');
+        $address = (new Address())
+            ->setStreet('Hugo-Junckers-Straße 3')
+            ->setState('DE-BO')
+            ->setZip('60386')
+            ->setCity('Frankfurt am Main')
+            ->setCountry('DE');
+        $customer
+            ->setBillingAddress($address)
+            ->setBirthDate('2000-12-12')
+            ->setEmail('manuel-weissmann@unzer.com');
+
+        return $customer;
+    }
+
+    /**
+     * Verify charge.
+     *
+     * @test
+     *
+     * @depends PaylaterDirectDebitAuthorize
+     *
+     * @param mixed $authorize
+     */
+    public function verifyChargingAnInitializedPaylaterDirectDebit($authorize): Charge
+    {
+        $payment = $authorize->getPayment();
+        $charge = $this->getUnzerObject()->performChargeOnPayment($payment, new Charge());
+        $this->assertNotNull($charge->getId());
+        $this->assertTrue($charge->isSuccess());
+
+        return $charge;
+    }
+
+    /**
+     * Verify partial charge.
+     *
+     * @test
+     */
+    public function verifyPartiallyChargingAnInitializedPaylaterDirectDebit(): Charge
+    {
+        $authorize = $this->createAuthorizeTransaction();
+        $payment = $authorize->getPayment();
+
+        $charge = $this->getUnzerObject()->performChargeOnPayment($payment, new Charge(33.33));
+        $this->assertNotNull($charge->getId());
+        $this->assertTrue($charge->isSuccess());
+        $this->unzer->fetchPaymentType($payment->getPaymentType()->getId());
+
+        return $charge;
+    }
+
+    /**
+     * Verify full cancel of charged HP.
+     *
+     * @test
+     *
+     * @depends verifyChargingAnInitializedPaylaterDirectDebit
+     */
+    public function verifyChargeAndFullCancelAnInitializedPaylaterDirectDebit(Charge $charge): void
+    {
+        $payment = $charge->getPayment();
+        $cancel = $this->getUnzerObject()->cancelChargedPayment($payment);
+
+        // then
+        $this->assertTrue($cancel->isSuccess());
+    }
+
+    /**
+     * Verify full cancel of charged HP.
+     *
+     * @test
+     */
+    public function verifyPartlyCancelChargedPaylaterDirectDebit(): void
+    {
+        $authorize = $this->createAuthorizeTransaction();
+        $payment = $authorize->getPayment();
+        $this->getUnzerObject()->performChargeOnPayment($payment, new Charge());
+
+        // when
+        $cancel = $this->getUnzerObject()->cancelChargedPayment($payment, new Cancellation(66.66));
+        $this->assertEmpty($cancel->getFetchedAt());
+
+        // then
+        $this->assertTrue($cancel->isSuccess());
+        $this->assertTrue($payment->isCompleted());
+
+        $fetchedPayment = $this->getUnzerObject()->fetchPayment($authorize->getPaymentId());
+        $fetchedCancel = $this->getUnzerObject()->fetchPaymentRefund($fetchedPayment->getId(), $cancel->getId());
+        $this->assertNotEmpty($fetchedCancel->getFetchedAt());
+    }
+
+    /**
+     * Verify full cancel of charged HP.
+     *
+     * @test
+     */
+    public function verifyFullCancelAuthorizedPaylaterDirectDebit(): void
+    {
+        $authorize = $this->createAuthorizeTransaction();
+        $payment = $authorize->getPayment();
+
+        // when
+        $cancel = $this->getUnzerObject()->cancelAuthorizedPayment($payment);
+        $this->assertEmpty($cancel->getFetchedAt());
+
+        // then
+        $this->assertTrue($cancel->isSuccess());
+        $this->assertTrue($payment->isCanceled());
+
+        $fetchedPayment = $this->getUnzerObject()->fetchPayment($authorize->getPaymentId());
+        $fetchedCancel = $this->getUnzerObject()->fetchPaymentReversal($fetchedPayment->getId(), $cancel->getId());
+        $this->assertNotEmpty($fetchedCancel->getFetchedAt());
+    }
+}
diff --git a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/PaylaterInstallmentTest.php b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/PaylaterInstallmentTest.php
new file mode 100644
index 0000000..3770a9a
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/PaylaterInstallmentTest.php
@@ -0,0 +1,262 @@
+<?php
+
+/** @noinspection PhpUnhandledExceptionInspection */
+/** @noinspection PhpDocMissingThrowsInspection */
+/**
+ * This class defines integration tests to verify interface and
+ * functionality of the payment method Installment Secured.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+
+namespace UnzerSDK\test\integration\PaymentTypes;
+
+use UnzerSDK\Constants\CustomerTypes;
+use UnzerSDK\Exceptions\UnzerApiException;
+use UnzerSDK\Resources\Customer;
+use UnzerSDK\Resources\CustomerFactory;
+use UnzerSDK\Resources\EmbeddedResources\Address;
+use UnzerSDK\Resources\EmbeddedResources\Paylater\InstallmentPlansQuery;
+use UnzerSDK\Resources\EmbeddedResources\Paylater\InstallmentPlan;
+use UnzerSDK\Resources\PaymentTypes\PaylaterInstallment;
+use UnzerSDK\Resources\TransactionTypes\Authorization;
+use UnzerSDK\Resources\TransactionTypes\Cancellation;
+use UnzerSDK\Resources\TransactionTypes\Charge;
+use UnzerSDK\test\BaseIntegrationTest;
+
+use function count;
+
+class PaylaterInstallmentTest extends BaseIntegrationTest
+{
+    /**
+     * Verify that paylater installment plans can be fetched.
+     *
+     * @test
+     */
+    public function installmentPlanShouldBeFetchable(): void
+    {
+        $paylaterInstallmentPlans = new InstallmentPlansQuery(99.99, 'EUR', 'DE', 'B2C');
+        $plans = $this->unzer->fetchPaylaterInstallmentPlans($paylaterInstallmentPlans);
+
+        $this->assertGreaterThan(0, count($plans->getPlans()));
+        $this->assertTrue($plans->isSuccess());
+    }
+
+    /**
+     * Verify that paylater installment type can be created and fetched.
+     *
+     * @test
+     */
+    public function typeCanBeCreatedAndFetched(): void
+    {
+        // when
+        $paylaterInstallmentPlans = new InstallmentPlansQuery(99.99, 'EUR', 'DE', 'B2C');
+        $plans = $this->unzer->fetchPaylaterInstallmentPlans($paylaterInstallmentPlans);
+
+        /** @var InstallmentPlan $selectedPlan */
+        $selectedPlan = $plans->getPlans()[1];
+        $ins = new PaylaterInstallment($plans->getId(), $selectedPlan->getNumberOfRates(), 'DE89370400440532013000', 'DE', 'Peter Mustermann');
+
+        // then
+        $this->unzer->createPaymentType($ins);
+        $this->assertNotEmpty($ins->getId());
+        $fetchedIns = $this->unzer->fetchPaymentType($ins->getId());
+        $this->assertNotEmpty($fetchedIns->getId());
+    }
+
+    /**
+     * Verify that paylater installment plans can be fetched.
+     *
+     * @test
+     */
+    public function fetchingPlansUsesB2CCustomerAsDefaultIfEmpty(): void
+    {
+        // when
+        $paylaterInstallmentPlans = new InstallmentPlansQuery(99.99, 'EUR', 'DE');
+
+        // then
+        $this->assertEquals(CustomerTypes::B2C, $paylaterInstallmentPlans->getCustomerType());
+        $plans = $this->unzer->fetchPaylaterInstallmentPlans($paylaterInstallmentPlans);
+        $this->assertTrue($plans->isSuccess());
+    }
+
+    /**
+     * Verify Api error is handled as Exception.
+     *
+     * @test
+     */
+    public function invalidInputThrowsUnzerApiException(): void
+    {
+        $this->expectException(UnzerApiException::class);
+        $paylaterInstallmentPlans = new InstallmentPlansQuery(-99.99, 'EUR', 'DE');
+
+        $this->assertEquals(CustomerTypes::B2C, $paylaterInstallmentPlans->getCustomerType());
+        $this->unzer->fetchPaylaterInstallmentPlans($paylaterInstallmentPlans);
+    }
+
+    /**
+     * Verify Installment Secured authorization (positive and negative).
+     *
+     * @test
+     *
+     * @param $firstname
+     * @param $lastname
+     * @param $errorCode
+     */
+    public function paylaterInstallmentAuthorize(): Authorization
+    {
+        $authorize = $this->createAuthorizeTransaction();
+        $this->assertNotEmpty($authorize->getId());
+        $this->assertTrue($authorize->isSuccess());
+
+        return $authorize;
+    }
+
+    //<editor-fold desc="Cancel">
+
+    /**
+     * Verify charge.
+     *
+     * @test
+     *
+     * @depends paylaterInstallmentAuthorize
+     *
+     * @param mixed $authorize
+     */
+    public function verifyChargingAnInitializedPaylaterInstallment($authorize): Charge
+    {
+        $payment = $authorize->getPayment();
+        $charge = $this->getUnzerObject()->performChargeOnPayment($payment, new Charge());
+        $this->assertNotNull($charge->getId());
+        $this->assertTrue($charge->isSuccess());
+
+        return $charge;
+    }
+
+    /**
+     * Verify partial charge.
+     *
+     * @test
+     */
+    public function verifyPartiallyChargingAnInitializedPaylaterInstallment(): Charge
+    {
+        $authorize = $this->createAuthorizeTransaction();
+        $payment = $authorize->getPayment();
+
+        $charge = $this->getUnzerObject()->performChargeOnPayment($payment, new Charge(33.33));
+        $this->assertNotNull($charge->getId());
+        $this->assertTrue($charge->isSuccess());
+
+        return $charge;
+    }
+
+    /**
+     * Verify full cancel of charged HP.
+     *
+     * @test
+     *
+     * @depends verifyChargingAnInitializedPaylaterInstallment
+     */
+    public function verifyChargeAndFullCancelAnInitializedPaylaterInstallment(Charge $charge): void
+    {
+        $payment = $charge->getPayment();
+        $cancel = $this->getUnzerObject()->cancelChargedPayment($payment);
+
+        // then
+        $this->assertTrue($cancel->isSuccess());
+    }
+
+    //</editor-fold>
+
+    /**
+     * Verify full cancel of charged HP.
+     *
+     * @test
+     */
+    public function verifyPartlyCancelChargedPaylaterInstallment(): void
+    {
+        $authorize = $this->createAuthorizeTransaction();
+        $payment = $authorize->getPayment();
+        $this->getUnzerObject()->performChargeOnPayment($payment, new Charge());
+
+        // when
+        $cancel = $this->getUnzerObject()->cancelChargedPayment($payment, new Cancellation(66.66));
+        $this->assertEmpty($cancel->getFetchedAt());
+
+        // then
+        $this->assertTrue($cancel->isSuccess());
+        $this->assertTrue($payment->isCompleted());
+
+        $fetchedPayment = $this->getUnzerObject()->fetchPayment($authorize->getPaymentId());
+        $fetchedCancel = $this->getUnzerObject()->fetchPaymentRefund($fetchedPayment->getId(), $cancel->getId());
+        $this->assertNotEmpty($fetchedCancel->getFetchedAt());
+    }
+
+    /**
+     * Verify full cancel of charged HP.
+     *
+     * @test
+     */
+    public function verifyFullCancelAuthorizedPaylaterInstallment(): void
+    {
+        $authorize = $this->createAuthorizeTransaction();
+        $payment = $authorize->getPayment();
+
+        // when
+        $cancel = $this->getUnzerObject()->cancelAuthorizedPayment($payment);
+        $this->assertEmpty($cancel->getFetchedAt());
+
+        // then
+        $this->assertTrue($cancel->isSuccess());
+        $this->assertTrue($payment->isCanceled());
+
+        $fetchedPayment = $this->getUnzerObject()->fetchPayment($authorize->getPaymentId());
+        $fetchedCancel = $this->getUnzerObject()->fetchPaymentReversal($fetchedPayment->getId(), $cancel->getId());
+        $this->assertNotEmpty($fetchedCancel->getFetchedAt());
+    }
+    //<editor-fold desc="Helper">
+
+    /** Performs a basic authorize transaction for Paylater invoice with amount 99.99 to set up test for follow-up transactions.
+     *
+     * @return Authorization
+     *
+     * @throws UnzerApiException
+     */
+    protected function createAuthorizeTransaction(): Authorization
+    {
+        $paylaterInstallmentPlans = new InstallmentPlansQuery(99.99, 'EUR', 'DE', 'B2C');
+        $plans = $this->unzer->fetchPaylaterInstallmentPlans($paylaterInstallmentPlans);
+
+        $selectedPlan = $plans->getPlans()[0];
+        $ins = new PaylaterInstallment($plans->getId(), $selectedPlan->getNumberOfRates(), 'DE89370400440532013000', 'DE', 'Peter Mustermann');
+        $this->unzer->createPaymentType($ins);
+
+        $customer = $this->getCustomer()->setFirstname('Peter')->setLastname('Mustermann');
+        $basket = $this->createBasket();
+
+        $authorization = new Authorization(99.99, 'EUR', self::RETURN_URL);
+        return $this->getUnzerObject()->performAuthorization($authorization, $ins, $customer, null, $basket);
+    }
+
+    /**
+     * @return Customer
+     */
+    public function getCustomer(): Customer
+    {
+        $customer = CustomerFactory::createCustomer('Manuel', 'Weißmann');
+        $address = (new Address())
+            ->setStreet('Hugo-Junckers-Straße 3')
+            ->setState('DE-BO')
+            ->setZip('60386')
+            ->setCity('Frankfurt am Main')
+            ->setCountry('DE');
+        $customer
+            ->setBillingAddress($address)
+            ->setBirthDate('2000-12-12')
+            ->setEmail('manuel-weissmann@unzer.com');
+
+        return $customer;
+    }
+    //</editor-fold>
+}
diff --git a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/PaylaterInvoiceTest.php b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/PaylaterInvoiceTest.php
new file mode 100644
index 0000000..e631c0b
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/PaylaterInvoiceTest.php
@@ -0,0 +1,195 @@
+<?php
+
+/** @noinspection PhpUnhandledExceptionInspection */
+/** @noinspection PhpDocMissingThrowsInspection */
+/**
+ * This class defines integration tests to verify interface and functionality of the payment method Paylater Invoice.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+
+namespace UnzerSDK\test\integration\PaymentTypes;
+
+use UnzerSDK\Resources\EmbeddedResources\RiskData;
+use UnzerSDK\Resources\EmbeddedResources\ShippingData;
+use UnzerSDK\Resources\PaymentTypes\PaylaterInvoice;
+use UnzerSDK\Resources\TransactionTypes\Authorization;
+use UnzerSDK\Resources\TransactionTypes\Charge;
+use UnzerSDK\test\BaseIntegrationTest;
+
+class PaylaterInvoiceTest extends BaseIntegrationTest
+{
+    /**
+     * Verifies Invoice Secured payment type can be created.
+     *
+     * @test
+     *
+     * @return PaylaterInvoice
+     */
+    public function paylaterInvoiceTestTypeShouldBeCreatableAndFetchable(): PaylaterInvoice
+    {
+        /** @var PaylaterInvoice $invoice */
+        $invoice = $this->unzer->createPaymentType(new PaylaterInvoice());
+        $this->assertInstanceOf(PaylaterInvoice::class, $invoice);
+        $this->assertNotNull($invoice->getId());
+
+        $fetchedInvoice = $this->unzer->fetchPaymentType($invoice->getId());
+        $this->assertInstanceOf(PaylaterInvoice::class, $fetchedInvoice);
+        $this->assertEquals($invoice->getId(), $fetchedInvoice->getId());
+        $this->assertMatchesRegularExpression('/^s-piv-[.]*/', $fetchedInvoice->getId());
+
+        return $invoice;
+    }
+
+    /**
+     * Customer should contain clientIp set via header.
+     *
+     * @test
+     */
+    public function clientIpCanBeManuallySetForPaylaterInvoiceType()
+    {
+        $clientIp = '123.123.123.123';
+        $this->unzer->setClientIp($clientIp);
+
+        /** @var PaylaterInvoice $invoice */
+        $invoice = $this->unzer->createPaymentType(new PaylaterInvoice());
+        $fetchedInvoice = $this->unzer->fetchPaymentType($invoice->getId());
+
+        $this->assertEquals($clientIp, $fetchedInvoice->getGeoLocation()->getClientIp());
+    }
+
+    /**
+     * Verify that paylater Invoice type can be authorized.
+     *
+     * @test
+     *
+     * @depends paylaterInvoiceTestTypeShouldBeCreatableAndFetchable
+     *
+     * @param mixed $paylaterInvoice
+     */
+    public function paylaterInvoiceCanbeAuthorized($paylaterInvoice): Authorization
+    {
+        $authorization = new Authorization(99.99, 'EUR', 'https://unzer.com');
+        $authorization->setInvoiceId('202205021237');
+
+        $customer = $this->getMaximumCustomerInclShippingAddress();
+        $basket = $this->createV2Basket();
+
+        $authorization = $this->unzer->performAuthorization($authorization, $paylaterInvoice, $customer, null, $basket);
+        $this->assertNotEmpty($authorization->getId());
+        $this->assertTrue($authorization->isSuccess());
+
+        return $authorization;
+    }
+
+    /**
+     * Verify that paylater Invoice type can be authorized with riskdata.
+     *
+     * @test
+     *
+     * @depends paylaterInvoiceTestTypeShouldBeCreatableAndFetchable
+     *
+     * @param mixed $paylaterInvoice
+     */
+    public function paylaterInvoiceCanbeAuthorizedWithRiskData($paylaterInvoice): Authorization
+    {
+        $riskData = new RiskData();
+        $riskData->setThreatMetrixId('f544if49wo4f74ef1x')
+            ->setCustomerGroup('TOP')
+            ->setCustomerId('C-122345')
+            ->setConfirmedAmount('1234')
+            ->setConfirmedOrders('42')
+            ->setRegistrationLevel('1')
+            ->setRegistrationDate('20160412');
+
+        $authorization = new Authorization(99.99, 'EUR', 'https://unzer.com');
+        $authorization->setRiskData($riskData)
+            ->setInvoiceId('202205021237');
+
+        $customer = $this->getMaximumCustomerInclShippingAddress();
+        $basket = $this->createV2Basket();
+
+        $transaction = $this->unzer->performAuthorization($authorization, $paylaterInvoice, $customer, null, $basket);
+        $this->assertNotEmpty($transaction->getId());
+        $this->assertNotEmpty($transaction->getRiskData());
+        $this->assertEquals($authorization->getAdditionalTransactionData(), $transaction->getAdditionalTransactionData());
+        $this->assertTrue($transaction->isSuccess());
+
+        return $authorization;
+    }
+
+    /**
+     * Verify that paylater Invoice type can be authorized with not registered B2B Customer.
+     *
+     * @test
+     *
+     * @depends paylaterInvoiceTestTypeShouldBeCreatableAndFetchable
+     *
+     * @param mixed $paylaterInvoice
+     */
+    public function paylaterInvoiceCanbeAuthorizedWithB2BCustomer($paylaterInvoice)
+    {
+        $authorization = new Authorization(99.99, 'EUR', 'https://unzer.com');
+        $authorization->setInvoiceId('202205021237');
+
+        $customer = $this->getMaximalNotRegisteredB2bCustomer();
+        $basket = $this->createV2Basket();
+
+        $transaction = $this->unzer->performAuthorization($authorization, $paylaterInvoice, $customer, null, $basket);
+        $this->assertNotEmpty($transaction->getId());
+        $this->assertNotEmpty($transaction->getDescriptor());
+        $this->assertTrue($transaction->isSuccess());
+    }
+
+    /**
+     * Verify that paylater Invoice type can be charged.
+     *
+     * @test
+     *
+     * @depends paylaterInvoiceCanbeAuthorized
+     *
+     * @param mixed $paylaterInvoice
+     * @param mixed $authorization
+     */
+    public function paylaterInvoiceCanbeCharged($authorization)
+    {
+        $charge = $this->unzer->performChargeOnPayment($authorization->getPayment(), new Charge(99.99));
+
+        $this->assertNotEmpty($charge->getId());
+        $this->assertTrue($charge->isSuccess());
+    }
+
+    /**
+     * Verify that paylater Invoice type can be charged with shippingdata.
+     *
+     * @test
+     *
+     * @param mixed $paylaterInvoice
+     * @param mixed $authorization
+     */
+    public function paylaterInvoiceCanbeChargedWithShippingData()
+    {
+        $authorization = $this->createPaylaterInvoiceAuthorization();
+        $shippingData = (object)[
+            "deliveryTrackingId" => "00340434286851877897",
+            "deliveryService" => "DHL",
+            "returnTrackingId" => "00340434286851877900"
+        ];
+        $shipping = new ShippingData();
+        $shipping->handleResponse($shippingData);
+
+        $chargeInstance = new Charge(99.99);
+        $chargeInstance->setOrderId($this->generateRandomId())
+            ->setInvoiceId($this->generateRandomId())
+            ->setPaymentReference('reference')
+            ->setShipping($shipping);
+
+        $chargeResponse = $this->unzer->performChargeOnPayment($authorization->getPayment(), $chargeInstance);
+        $this->assertNotEmpty($chargeResponse->getId());
+        $this->assertTrue($chargeResponse->isSuccess());
+
+        $fetchedCharge = $this->unzer->fetchChargeById($authorization->getPaymentId(), $chargeResponse->getId());
+        $this->assertEquals($shipping, $fetchedCharge->getShipping());
+    }
+}
diff --git a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/PaypageTest.php b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/PaypageTest.php
index 8a99cf3..3f8c09c 100644
--- a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/PaypageTest.php
+++ b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/PaypageTest.php
@@ -1,39 +1,33 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines integration tests to verify interface and functionality of the Paypage.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\integration\PaymentTypes
  */
+
 namespace UnzerSDK\test\integration\PaymentTypes;
 
+use UnzerSDK\Constants\ExemptionType;
+use UnzerSDK\Constants\RecurrenceTypes;
+use UnzerSDK\Constants\TransactionTypes;
+use UnzerSDK\Exceptions\UnzerApiException;
 use UnzerSDK\Resources\CustomerFactory;
 use UnzerSDK\Resources\Payment;
 use UnzerSDK\Resources\PaymentTypes\Card;
 use UnzerSDK\Resources\PaymentTypes\Paypage;
 use UnzerSDK\test\BaseIntegrationTest;
+use UnzerSDK\Constants\PaymentState;
 
 class PaypageTest extends BaseIntegrationTest
 {
+    // IDs for Expired payment page. IDs are testkeypair specific.
+    private const EXPIRED_PAYPAGE_ID = "s-ppg-57cf4528728391347941b610ae22efccc92fa331d22e425a16b4e85b97c73362";
+    private const PAYMENT_WITH_EXPIRED_PAYMENT_PAGE = 's-pay-328749';
+
     /**
      * Verify the Paypage resource for charge can be created with the mandatory parameters only.
      *
@@ -47,6 +41,44 @@ public function minimalPaypageChargeShouldBeCreatableAndFetchable(): void
         $this->assertNotEmpty($paypage->getId());
     }
 
+    /**
+     * Verify fetching expired paypageId.
+     *
+     * @test
+     */
+    public function verifyFetchingExpiredPaypageThrowsException()
+    {
+        $this->expectException(UnzerApiException::class);
+        $this->getUnzerObject()->fetchPayPage(self::EXPIRED_PAYPAGE_ID);
+    }
+
+    /**
+     * Verify fetching payment that contains expired payment page is possible.
+     *
+     * @test
+     */
+    public function verifyFetchingPaymentwithExpiredPaymentPageIspossible()
+    {
+        $payment = $this->getUnzerObject()->fetchPayment(self::PAYMENT_WITH_EXPIRED_PAYMENT_PAGE);
+        $this->assertEquals(self::EXPIRED_PAYPAGE_ID, $payment->getPayPage()->getId());
+        $this->assertNotEmpty($payment->getFetchedAt());
+    }
+
+    /**
+     * Verify the Paypage resource creates payment in state "create".
+     *
+     * @test
+     */
+    public function paymentShouldBeInStateCreateOnInitialization(): void
+    {
+        $paypage = new Paypage(100.0, 'EUR', self::RETURN_URL);
+        $paypage = $this->unzer->initPayPageCharge($paypage);
+        $payment = $paypage->getPayment();
+
+        $this->assertTrue($payment->isCreate());
+        $this->assertEquals($payment->getState(), PaymentState::STATE_CREATE);
+    }
+
     /**
      * Verify the Paypage resource for charge can be created with all parameters.
      *
@@ -59,8 +91,8 @@ public function maximumPaypageChargeShouldBeCreatable(): void
         $customer = CustomerFactory::createCustomer('Max', 'Mustermann');
         $invoiceId = 'i'. self::generateRandomId();
         $paypage = (new Paypage(119.0, 'EUR', self::RETURN_URL))
-            ->setLogoImage('https://dev.unzer.com/wp-content/uploads/2020/09/Unzer__PrimaryLogo_Raspberry_RGB.png')
-            ->setFullPageImage('https://dev.unzer.com/wp-content/uploads/2020/09/01_Unzer_Ambitious_RGB_LoRes.jpg')
+            ->setLogoImage('https://docs.unzer.com/card/card.png')
+            ->setFullPageImage('https://docs.unzer.com/card/card.png')
             ->setShopName('My Test Shop')
             ->setShopDescription('Best shop in the whole world!')
             ->setTagline('Try and stop us from being awesome!')
@@ -100,6 +132,78 @@ public function minimalPaypageAuthorizeShouldBeCreatableAndFetchable(): void
         $this->assertEmpty($paypage->getId());
         $paypage = $this->unzer->initPayPageAuthorize($paypage);
         $this->assertNotEmpty($paypage->getId());
+
+        $fetchedPaypage = $this->unzer->fetchPayPage($paypage->getId());
+        $this->assertEquals($paypage->getRedirectUrl(), $fetchedPaypage->getRedirectUrl());
+        $this->assertEquals($paypage->getAction(), TransactionTypes::AUTHORIZATION);
+    }
+
+    /**
+     * Custom additional transaction data can be set.
+     *
+     * @test
+     */
+    public function additionalAttributesCanBeSet(): void
+    {
+        $paypage = new Paypage(100.0, 'EUR', self::RETURN_URL);
+        $paypage->setAdditionalAttribute('customField', 'customValue')
+            ->setEffectiveInterestRate(4.99)
+            ->setExemptionType(ExemptionType::LOW_VALUE_PAYMENT)
+            ->setRecurrenceType(RecurrenceTypes::UNSCHEDULED);
+
+        $paypage = $this->unzer->initPayPageAuthorize($paypage);
+        $this->assertNotEmpty($paypage->getId());
+
+        $fetchedPaypage = $this->unzer->fetchPayPage($paypage->getId());
+
+        $this->assertEquals('customValue', $fetchedPaypage->getAdditionalAttribute('customField'));
+        $this->assertEquals(4.99, $fetchedPaypage->getEffectiveInterestRate());
+        $this->assertEquals(ExemptionType::LOW_VALUE_PAYMENT, $fetchedPaypage->getExemptionType());
+        $this->assertEquals(RecurrenceTypes::UNSCHEDULED, $fetchedPaypage->getRecurrenceType());
+    }
+
+    /**
+     * Verify fetched payment contains paypage when fetched.
+     *
+     * @test
+     */
+    public function fetchedPaymentShouldContainPayPageID(): void
+    {
+        $payPage = new Paypage(100.0, 'EUR', self::RETURN_URL);
+        $this->assertEmpty($payPage->getId());
+        $payPage = $this->unzer->initPayPageAuthorize($payPage);
+        $payment = $payPage->getPayment();
+        $this->assertNotEmpty($payPage->getId());
+
+        $fetchedPayment = $this->unzer->fetchPayment($payPage->getPaymentId());
+        $fetchedPayPage = $fetchedPayment->getPayPage();
+
+        $this->assertNotEmpty($fetchedPayPage);
+        $this->assertEquals($payPage->getId(), $fetchedPayPage->getId());
+        $this->assertEquals($payment->expose(), $fetchedPayment->expose());
+        $this->assertEmpty($fetchedPayment->getRedirectUrl());
+    }
+
+    /**
+     * Verify the Paypage resource for authorize can be created with the mandatory parameters only.
+     *
+     * @test
+     */
+    public function fetchingPayPageShouldHaveReferenceToPayment(): void
+    {
+        $payPage = new Paypage(100.0, 'EUR', self::RETURN_URL);
+        $this->assertEmpty($payPage->getId());
+
+        $payPage = $this->unzer->initPayPageAuthorize($payPage);
+        $payment = $payPage->getPayment();
+        $this->assertNotEmpty($payPage->getId());
+
+        $fetchedPayPage = $this->unzer->fetchPayPage($payPage->getId());
+        $this->assertNotNull($fetchedPayPage->getPayment());
+        $this->assertNotNull($fetchedPayPage->getRedirectUrl());
+
+        $this->assertEquals($payment->getId(), $fetchedPayPage->getPayment()->getId());
+        $this->assertNotNull($payment->getFetchedAt());
     }
 
     /**
@@ -114,8 +218,8 @@ public function maximumPaypageAuthorizeShouldBeCreatable(): void
         $customer = CustomerFactory::createCustomer('Max', 'Mustermann');
         $invoiceId = 'i'. self::generateRandomId();
         $paypage = (new Paypage(119.0, 'EUR', self::RETURN_URL))
-            ->setLogoImage('https://dev.unzer.com/wp-content/uploads/2020/09/Unzer__PrimaryLogo_Raspberry_RGB.png')
-            ->setFullPageImage('https://dev.unzer.com/wp-content/uploads/2020/09/01_Unzer_Ambitious_RGB_LoRes.jpg')
+            ->setLogoImage('https://docs.unzer.com/card/card.png')
+            ->setFullPageImage('https://docs.unzer.com/card/card.png')
             ->setShopName('My Test Shop')
             ->setShopDescription('Best shop in the whole world!')
             ->setTagline('Try and stop us from being awesome!')
diff --git a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/PaypalTest.php b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/PaypalTest.php
index 8a5fb83..89509da 100644
--- a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/PaypalTest.php
+++ b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/PaypalTest.php
@@ -1,33 +1,23 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines integration tests to verify interface and functionality of the payment method paypal.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\integration\PaymentTypes
  */
+
 namespace UnzerSDK\test\integration\PaymentTypes;
 
+use UnzerSDK\Exceptions\UnzerApiException;
+use UnzerSDK\Resources\Basket;
+use UnzerSDK\Resources\EmbeddedResources\BasketItem;
 use UnzerSDK\Resources\PaymentTypes\BasePaymentType;
 use UnzerSDK\Resources\PaymentTypes\Paypal;
+use UnzerSDK\Resources\TransactionTypes\Authorization;
+use UnzerSDK\Resources\TransactionTypes\Charge;
 use UnzerSDK\test\BaseIntegrationTest;
 
 class PaypalTest extends BaseIntegrationTest
@@ -78,6 +68,7 @@ public function paypalShouldBeCreatableAndFetchableWithEmail(): BasePaymentType
      * Verify paypal can authorize.
      *
      * @test
+     *
      * @depends paypalShouldBeCreatableAndFetchable
      *
      * @param Paypal $paypal
@@ -98,6 +89,7 @@ public function paypalShouldBeAuthorizable(Paypal $paypal): void
      * Verify paypal can charge.
      *
      * @test
+     *
      * @depends paypalShouldBeCreatableAndFetchable
      *
      * @param Paypal $paypal
@@ -108,4 +100,124 @@ public function paypalShouldBeChargeable(Paypal $paypal): void
         $this->assertNotNull($charge);
         $this->assertNotEmpty($charge->getId());
     }
+
+    /**
+     * Test PayPal Express checkout.
+     *
+     * @test
+     *
+     * @depends paypalShouldBeCreatableAndFetchable
+     *
+     * @param Paypal $paypal
+     *
+     * @return Charge
+     *
+     * @throws UnzerApiException
+     */
+    public function paypalChargeWithExpressCheckout(Paypal $paypal): Charge
+    {
+        $initialAmount = 100.00;
+        $charge = new Charge($initialAmount, 'EUR', self::RETURN_URL);
+        $charge->setCheckoutType('express', $paypal);
+
+        $basketItem = (new BasketItem())
+            ->setTitle('ItemTitle')
+            ->setAmountPerUnitGross($initialAmount);
+        $basket = (new Basket())->setTotalValueGross($initialAmount);
+        $basket->addBasketItem($basketItem);
+        $this->getUnzerObject()->performCharge($charge, $paypal, null, null, $basket);
+        $this->assertNotEmpty($charge->getId());
+
+        $this->assertTrue($charge->isPending());
+
+        return $charge;
+    }
+
+    /**
+     * Verify Charge can be updated
+     *
+     * @test
+     *
+     * @depends paypalChargeWithExpressCheckout
+     */
+    public function updateChargeThrowsExceptionWhenStatusIsPending(Charge $charge): void
+    {
+        $charge->setAmount(120);
+        $this->expectException(UnzerApiException::class);
+
+        $this->getUnzerObject()->updateCharge($charge->getPaymentId(), $charge);
+    }
+
+    /**
+     * Test PayPal Express checkout.
+     *
+     * @test
+     *
+     * @depends paypalShouldBeCreatableAndFetchable
+     *
+     * @param Paypal $paypal
+     *
+     * @return Authorization
+     *
+     * @throws UnzerApiException
+     */
+    public function paypalAuthorizeWithExpressCheckout(Paypal $paypal): Authorization
+    {
+        $initialAmount = 100.00;
+        $authorize = new Authorization($initialAmount, 'EUR', self::RETURN_URL);
+        $authorize->setCheckoutType('express', $paypal->getId());
+
+        $basketItem = (new BasketItem())
+            ->setTitle('ItemTitle')
+            ->setAmountPerUnitGross($initialAmount);
+        $basket = (new Basket())->setTotalValueGross($initialAmount);
+        $basket->addBasketItem($basketItem);
+
+        $this->getUnzerObject()->performAuthorization($authorize, $paypal, null, null, $basket);
+        $this->assertNotEmpty($authorize->getId());
+
+        $this->assertTrue($authorize->isPending());
+        $this->assertNotNull($authorize->getCheckoutType());
+
+        return $authorize;
+    }
+
+    /**
+     * Test PayPal Express checkout.
+     *
+     * @test
+     *
+     * @depends paypalShouldBeCreatableAndFetchable
+     *
+     * @param Paypal $paypal
+     *
+     * @return Authorization
+     *
+     * @throws UnzerApiException
+     */
+    public function invalidCheckoutTypeThrowsApiException(Paypal $paypal): Authorization
+    {
+        $authorize = new Authorization(100.00, 'EUR', self::RETURN_URL);
+        $authorize->setCheckoutType('expresso', $paypal);
+
+        $this->expectException(UnzerApiException::class);
+
+        $this->getUnzerObject()->performAuthorization($authorize, $paypal);
+
+        return $authorize;
+    }
+
+    /**
+     * Verify Authorize can be updated
+     *
+     * @test
+     *
+     * @depends paypalAuthorizeWithExpressCheckout
+     */
+    public function updateAuthorizeThrowsApiExceptionWhenStatusIsPending(Authorization $authorize): void
+    {
+        $authorize->setAmount(120);
+        $this->expectException(UnzerApiException::class);
+        $this->getUnzerObject()->updateAuthorization($authorize->getPaymentId(), $authorize);
+    }
 }
diff --git a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/PostFinanceCardTest.php b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/PostFinanceCardTest.php
new file mode 100644
index 0000000..a311e6a
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/PostFinanceCardTest.php
@@ -0,0 +1,86 @@
+<?php
+
+/** @noinspection PhpUnhandledExceptionInspection */
+/** @noinspection PhpDocMissingThrowsInspection */
+/**
+ * This class defines integration tests to verify interface and
+ * functionality of the payment method PostFinanceCardTest.
+ *
+ * @link     https://docs.unzer.com/
+ *
+ */
+
+namespace UnzerSDK\test\integration\PaymentTypes;
+
+use UnzerSDK\Constants\ApiResponseCodes;
+use UnzerSDK\Exceptions\UnzerApiException;
+use UnzerSDK\Resources\PaymentTypes\PostFinanceCard;
+use UnzerSDK\Resources\TransactionTypes\Authorization;
+use UnzerSDK\Resources\TransactionTypes\Charge;
+use UnzerSDK\test\BaseIntegrationTest;
+
+class PostFinanceCardTest extends BaseIntegrationTest
+{
+    /**
+     * Verify PostFinanceCard can be created.
+     *
+     * @test
+     *
+     * @return PostFinanceCard
+     */
+    public function postFinanceCardShouldBeCreatableAndFetchable(): PostFinanceCard
+    {
+        $paymentType = $this->unzer->createPaymentType(new PostFinanceCard());
+        $this->assertInstanceOf(PostFinanceCard::class, $paymentType);
+        $this->assertNotNull($paymentType->getId());
+
+        /** @var PostFinanceCard $fetchedType */
+        $fetchedType = $this->unzer->fetchPaymentType($paymentType->getId());
+        $this->assertInstanceOf(PostFinanceCard::class, $fetchedType);
+        $this->assertEquals($paymentType->expose(), $fetchedType->expose());
+        $this->assertNotEmpty($fetchedType->getGeoLocation()->getClientIp());
+
+        return $fetchedType;
+    }
+
+    /**
+     * Verify PostFinanceCard is chargeable.
+     *
+     * @test
+     *
+     * @param PostFinanceCard $paymentType
+     *
+     * @return Charge
+     *
+     * @depends postFinanceCardShouldBeCreatableAndFetchable
+     */
+    public function postFinanceCardShouldBeAbleToCharge(PostFinanceCard $paymentType): Charge
+    {
+        $charge = new Charge(100.0, 'CHF', self::RETURN_URL);
+        $this->getUnzerObject()->performCharge($charge, $paymentType);
+
+        $this->assertNotNull($charge);
+        $this->assertNotEmpty($charge->getId());
+        $this->assertNotEmpty($charge->getRedirectUrl());
+
+        return $charge;
+    }
+
+    /**
+     * Verify postFinanceCard is not authorizable.
+     *
+     * @test
+     *
+     * @param PostFinanceCard $postFinanceCard
+     *
+     * @depends postFinanceCardShouldBeCreatableAndFetchable
+     */
+    public function postFinanceCardShouldNotBeAuthorizable(PostFinanceCard $postFinanceCard): void
+    {
+        $this->expectException(UnzerApiException::class);
+        $this->expectExceptionCode(ApiResponseCodes::API_ERROR_TRANSACTION_AUTHORIZE_NOT_ALLOWED);
+
+        $authorization = new Authorization(100.0, 'CHF', self::RETURN_URL);
+        $this->unzer->performAuthorization($authorization, $postFinanceCard);
+    }
+}
diff --git a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/PostFinanceEfinanceTest.php b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/PostFinanceEfinanceTest.php
new file mode 100644
index 0000000..6452a70
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/PostFinanceEfinanceTest.php
@@ -0,0 +1,86 @@
+<?php
+
+/** @noinspection PhpUnhandledExceptionInspection */
+/** @noinspection PhpDocMissingThrowsInspection */
+/**
+ * This class defines integration tests to verify interface and
+ * functionality of the payment method PostFinanceEfinanceTest.
+ *
+ * @link     https://docs.unzer.com/
+ *
+ */
+
+namespace UnzerSDK\test\integration\PaymentTypes;
+
+use UnzerSDK\Constants\ApiResponseCodes;
+use UnzerSDK\Exceptions\UnzerApiException;
+use UnzerSDK\Resources\PaymentTypes\PostFinanceEfinance;
+use UnzerSDK\Resources\TransactionTypes\Authorization;
+use UnzerSDK\Resources\TransactionTypes\Charge;
+use UnzerSDK\test\BaseIntegrationTest;
+
+class PostFinanceEfinanceTest extends BaseIntegrationTest
+{
+    /**
+     * Verify PostFinanceEfinance can be created.
+     *
+     * @test
+     *
+     * @return PostFinanceEfinance
+     */
+    public function postFinanceEfinanceShouldBeCreatableAndFetchable(): PostFinanceEfinance
+    {
+        $paymentType = $this->unzer->createPaymentType(new PostFinanceEfinance());
+        $this->assertInstanceOf(PostFinanceEfinance::class, $paymentType);
+        $this->assertNotNull($paymentType->getId());
+
+        /** @var PostFinanceEfinance $fetchedType */
+        $fetchedType = $this->unzer->fetchPaymentType($paymentType->getId());
+        $this->assertInstanceOf(PostFinanceEfinance::class, $fetchedType);
+        $this->assertEquals($paymentType->expose(), $fetchedType->expose());
+        $this->assertNotEmpty($fetchedType->getGeoLocation()->getClientIp());
+
+        return $fetchedType;
+    }
+
+    /**
+     * Verify PostFinanceEfinance is chargeable.
+     *
+     * @test
+     *
+     * @param PostFinanceEfinance $paymentType
+     *
+     * @return Charge
+     *
+     * @depends postFinanceEfinanceShouldBeCreatableAndFetchable
+     */
+    public function postFinanceEfinanceShouldBeAbleToCharge(PostFinanceEfinance $paymentType): Charge
+    {
+        $charge = new Charge(100.0, 'CHF', self::RETURN_URL);
+        $this->getUnzerObject()->performCharge($charge, $paymentType);
+
+        $this->assertNotNull($charge);
+        $this->assertNotEmpty($charge->getId());
+        $this->assertNotEmpty($charge->getRedirectUrl());
+
+        return $charge;
+    }
+
+    /**
+     * Verify PostFinanceEfinance is not authorizable.
+     *
+     * @test
+     *
+     * @param PostFinanceEfinance $postFinanceEfinance
+     *
+     * @depends postFinanceEfinanceShouldBeCreatableAndFetchable
+     */
+    public function postFinanceEfinanceShouldNotBeAuthorizable(PostFinanceEfinance $postFinanceEfinance): void
+    {
+        $this->expectException(UnzerApiException::class);
+        $this->expectExceptionCode(ApiResponseCodes::API_ERROR_TRANSACTION_AUTHORIZE_NOT_ALLOWED);
+
+        $authorization = new Authorization(100.0, 'CHF', self::RETURN_URL);
+        $this->unzer->performAuthorization($authorization, $postFinanceEfinance);
+    }
+}
diff --git a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/PrepaymentTest.php b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/PrepaymentTest.php
index 82e8628..4f89dd9 100644
--- a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/PrepaymentTest.php
+++ b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/PrepaymentTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines integration tests to verify interface and functionality of the payment method prepayment.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\integration\PaymentTypes
  */
+
 namespace UnzerSDK\test\integration\PaymentTypes;
 
 use UnzerSDK\Constants\ApiResponseCodes;
@@ -39,6 +24,7 @@ class PrepaymentTest extends BaseIntegrationTest
      * Verify Prepayment can be created and fetched.
      *
      * @return Prepayment
+     *
      * @test
      */
     public function prepaymentShouldBeCreatableAndFetchable(): AbstractUnzerResource
diff --git a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/Przelewy24Test.php b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/Przelewy24Test.php
index 2ce7fb9..37c2374 100644
--- a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/Przelewy24Test.php
+++ b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/Przelewy24Test.php
@@ -1,37 +1,24 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines integration tests to verify interface and functionality
  * of the payment method Przelewy24.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\integration\PaymentTypes
  */
+
 namespace UnzerSDK\test\integration\PaymentTypes;
 
 use UnzerSDK\Constants\ApiResponseCodes;
 use UnzerSDK\Exceptions\UnzerApiException;
 use UnzerSDK\Resources\PaymentTypes\BasePaymentType;
 use UnzerSDK\Resources\PaymentTypes\Przelewy24;
+use UnzerSDK\Resources\TransactionTypes\Charge;
 use UnzerSDK\test\BaseIntegrationTest;
+use UnzerSDK\test\Helper\TestEnvironmentService;
 
 class Przelewy24Test extends BaseIntegrationTest
 {
@@ -60,13 +47,20 @@ public function przelewy24ShouldBeCreatableAndFetchable(): BasePaymentType
      * Verify przelewy24 can authorize.
      *
      * @test
+     *
      * @depends przelewy24ShouldBeCreatableAndFetchable
      *
      * @param Przelewy24 $przelewy24
      */
     public function przelewy24ShouldBeChargeable(Przelewy24 $przelewy24): void
     {
-        $charge = $przelewy24->charge(100.0, 'PLN', self::RETURN_URL);
+        $charge = new Charge(100.0, 'PLN', self::RETURN_URL);
+        $customer = $this->getMaximumCustomer();
+        $customer->getShippingAddress()
+            ->setCountry('PL');
+        $customer->getBillingAddress()
+            ->setCountry('PL');
+        $this->getUnzerObject()->performCharge($charge, $przelewy24, $customer);
         $this->assertNotNull($charge);
         $this->assertNotEmpty($charge->getId());
         $this->assertNotEmpty($charge->getRedirectUrl());
@@ -80,6 +74,7 @@ public function przelewy24ShouldBeChargeable(Przelewy24 $przelewy24): void
      * Verify przelewy24 can not be authorized.
      *
      * @test
+     *
      * @depends przelewy24ShouldBeCreatableAndFetchable
      *
      * @param Przelewy24 $przelewy24
@@ -103,6 +98,31 @@ public function przelewy24ShouldNotBeAuthorizable(Przelewy24 $przelewy24): void
      */
     public function przelewy24ShouldThrowExceptionIfCurrencyIsNotSupported($currencyCode): void
     {
+        /** @var Przelewy24 $przelewy24 */
+        $przelewy24 = $this->unzer->createPaymentType(new Przelewy24());
+        $this->expectException(UnzerApiException::class);
+        $this->expectExceptionCode(ApiResponseCodes::API_ERROR_CURRENCY_IS_NOT_SUPPORTED);
+        $charge = new Charge(100.0, $currencyCode, self::RETURN_URL);
+        $customer = $this->getMaximumCustomer();
+        $customer->getShippingAddress()
+            ->setCountry('PL');
+        $customer->getBillingAddress()
+            ->setCountry('PL');
+        $this->getUnzerObject()->performCharge($charge, $przelewy24, $customer);
+    }
+
+    /**
+     * Verify przelewy24 can only handle Currency::POLISH_ZLOTY.
+     *
+     * @test
+     *
+     * @dataProvider legazyPrzelewy24CurrencyCodeProvider
+     *
+     * @param string $currencyCode
+     */
+    public function legazyConfigPrzelewy24ShouldThrowExceptionIfCurrencyIsNotSupported($currencyCode): void
+    {
+        $this->getUnzerObject()->getUnzerObject()->setKey(TestEnvironmentService::getLegacyTestPrivateKey());
         /** @var Przelewy24 $przelewy24 */
         $przelewy24 = $this->unzer->createPaymentType(new Przelewy24());
         $this->expectException(UnzerApiException::class);
@@ -116,10 +136,21 @@ public function przelewy24ShouldThrowExceptionIfCurrencyIsNotSupported($currency
      * Provides a subset of currencies not allowed by this payment method.
      */
     public function przelewy24CurrencyCodeProvider(): array
+    {
+        return [
+            'US Dollar' => ['USD'],
+            'Swiss Franc' => ['CHF']
+        ];
+    }
+
+    /**
+     * Provides a subset of currencies not allowed by this payment method.
+     */
+    public function legazyPrzelewy24CurrencyCodeProvider(): array
     {
         return [
             'EUR' => ['EUR'],
-            'US Dollar'=> ['USD'],
+            'US Dollar' => ['USD'],
             'Swiss Franc' => ['CHF']
         ];
     }
diff --git a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/SepaDirectDebitSecuredTest.php b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/SepaDirectDebitSecuredTest.php
index 4d82463..b2d89c4 100644
--- a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/SepaDirectDebitSecuredTest.php
+++ b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/SepaDirectDebitSecuredTest.php
@@ -1,30 +1,15 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines integration tests to verify interface and
  * functionality of the payment method sepa direct debit secured.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\integration\PaymentTypes
  */
+
 namespace UnzerSDK\test\integration\PaymentTypes;
 
 use UnzerSDK\Constants\ApiResponseCodes;
@@ -32,9 +17,15 @@
 use UnzerSDK\Resources\PaymentTypes\SepaDirectDebitSecured;
 use UnzerSDK\Resources\TransactionTypes\Charge;
 use UnzerSDK\test\BaseIntegrationTest;
+use UnzerSDK\test\Helper\TestEnvironmentService;
 
 class SepaDirectDebitSecuredTest extends BaseIntegrationTest
 {
+    protected function setUp(): void
+    {
+        $this->getUnzerObject(TestEnvironmentService::getLegacyTestPrivateKey());
+    }
+
     /**
      * Verify sepa direct debit secured can be created with mandatory fields only.
      *
@@ -79,6 +70,7 @@ public function sepaDirectDebitSecuredShouldBeCreatable(): SepaDirectDebitSecure
      * Verify Sepa Direct Debit Secured needs a basket object
      *
      * @test
+     *
      * @depends sepaDirectDebitSecuredShouldBeCreatable
      *
      * @param sepaDirectDebitSecured $sepaDirectDebitSecured
@@ -94,6 +86,7 @@ public function sepaDirectDebitSecuredRequiresBasket(SepaDirectDebitSecured $sep
      * Verify Sepa Direct Debit Secured needs a customer object
      *
      * @test
+     *
      * @depends sepaDirectDebitSecuredShouldBeCreatable
      *
      * @param sepaDirectDebitSecured $sepaDirectDebitSecured
@@ -112,6 +105,7 @@ public function sepaDirectDebitSecuredRequiresCustomer(SepaDirectDebitSecured $s
      * @test
      *
      * @param SepaDirectDebitSecured $directDebitSecured
+     *
      * @depends sepaDirectDebitSecuredShouldBeCreatable
      */
     public function directDebitSecuredShouldProhibitAuthorization(SepaDirectDebitSecured $directDebitSecured): void
@@ -173,12 +167,12 @@ public function ddgTypeShouldBeFechable(): SepaDirectDebitSecured
         // When
         /** @var SepaDirectDebitSecured $insType */
         $this->unzer->createPaymentType($ddgMock);
-        $this->assertRegExp('/^s-ddg-[.]*/', $ddgMock->getId());
+        $this->assertMatchesRegularExpression('/^s-ddg-[.]*/', $ddgMock->getId());
 
         // Then
         $fetchedType = $this->unzer->fetchPaymentType($ddgMock->getId());
         $this->assertInstanceOf(SepaDirectDebitSecured::class, $fetchedType);
-        $this->assertRegExp('/^s-ddg-[.]*/', $fetchedType->getId());
+        $this->assertMatchesRegularExpression('/^s-ddg-[.]*/', $fetchedType->getId());
 
         return $fetchedType;
     }
@@ -187,6 +181,7 @@ public function ddgTypeShouldBeFechable(): SepaDirectDebitSecured
      * Verify fetched ddg type can be charged
      *
      * @test
+     *
      * @depends ddgTypeShouldBeFechable
      *
      * @param SepaDirectDebitSecured $ddgType fetched ins type.
@@ -211,6 +206,7 @@ public function ddgTypeCharge(SepaDirectDebitSecured $ddgType)
      * Verify fetched ddg payment throws an exception when being shipped.
      *
      * @test
+     *
      * @depends ddgTypeCharge
      *
      * @param Charge $ddgCharge
diff --git a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/SepaDirectDebitTest.php b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/SepaDirectDebitTest.php
index 3d1a8ce..b97268e 100644
--- a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/SepaDirectDebitTest.php
+++ b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/SepaDirectDebitTest.php
@@ -1,30 +1,15 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines integration tests to verify interface and
  * functionality of the payment method sepa direct debit.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\integration\PaymentTypes
  */
+
 namespace UnzerSDK\test\integration\PaymentTypes;
 
 use UnzerSDK\Constants\ApiResponseCodes;
@@ -34,6 +19,11 @@
 
 class SepaDirectDebitTest extends BaseIntegrationTest
 {
+    protected function setUp(): void
+    {
+        $this->useLegacyKey();
+    }
+
     /**
      * Verify sepa direct debit can be created.
      *
diff --git a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/SofortTest.php b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/SofortTest.php
index bb61684..ebcdd10 100644
--- a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/SofortTest.php
+++ b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/SofortTest.php
@@ -1,30 +1,15 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines integration tests to verify interface and
  * functionality of the payment method sofort.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\integration\PaymentTypes
  */
+
 namespace UnzerSDK\test\integration\PaymentTypes;
 
 use UnzerSDK\Constants\ApiResponseCodes;
@@ -52,6 +37,7 @@ public function sofortShouldBeCreatableAndFetchable(): Sofort
         $fetchedSofort = $this->unzer->fetchPaymentType($sofort->getId());
         $this->assertInstanceOf(Sofort::class, $fetchedSofort);
         $this->assertEquals($sofort->expose(), $fetchedSofort->expose());
+        $this->assertNotEmpty($fetchedSofort->getGeoLocation()->getClientIp());
 
         return $fetchedSofort;
     }
@@ -64,6 +50,7 @@ public function sofortShouldBeCreatableAndFetchable(): Sofort
      * @param Sofort $sofort
      *
      * @return Charge
+     *
      * @depends sofortShouldBeCreatableAndFetchable
      */
     public function sofortShouldBeAbleToCharge(Sofort $sofort): Charge
@@ -82,6 +69,7 @@ public function sofortShouldBeAbleToCharge(Sofort $sofort): Charge
      * @test
      *
      * @param Sofort $sofort
+     *
      * @depends sofortShouldBeCreatableAndFetchable
      */
     public function sofortShouldNotBeAuthorizable(Sofort $sofort): void
diff --git a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/WechatpayTest.php b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/WechatpayTest.php
index fdd5565..0cff56f 100644
--- a/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/WechatpayTest.php
+++ b/vendor/unzerdev/php-sdk/test/integration/PaymentTypes/WechatpayTest.php
@@ -1,30 +1,15 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines integration tests to verify interface and
  * functionality of the payment method Wechatpay.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\integration\PaymentTypes
  */
+
 namespace UnzerSDK\test\integration\PaymentTypes;
 
 use UnzerSDK\Constants\ApiResponseCodes;
diff --git a/vendor/unzerdev/php-sdk/test/integration/RecurringPaymentTest.php b/vendor/unzerdev/php-sdk/test/integration/RecurringPaymentTest.php
index 9cdce30..abc379a 100644
--- a/vendor/unzerdev/php-sdk/test/integration/RecurringPaymentTest.php
+++ b/vendor/unzerdev/php-sdk/test/integration/RecurringPaymentTest.php
@@ -1,40 +1,25 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * Test cases to verify functionality and integration of recurring payments.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\integration
  */
+
 namespace UnzerSDK\test\integration;
 
 use UnzerSDK\Constants\ApiResponseCodes;
 use UnzerSDK\Constants\RecurrenceTypes;
 use UnzerSDK\Exceptions\UnzerApiException;
+use UnzerSDK\test\Helper\TestEnvironmentService;
 use UnzerSDK\Unzer;
 use UnzerSDK\Resources\PaymentTypes\Card;
 use UnzerSDK\Resources\PaymentTypes\Paypal;
 use UnzerSDK\Resources\PaymentTypes\SepaDirectDebit;
 use UnzerSDK\Resources\PaymentTypes\SepaDirectDebitSecured;
-use UnzerSDK\Services\EnvironmentService;
 use UnzerSDK\test\BaseIntegrationTest;
 use RuntimeException;
 
@@ -58,6 +43,8 @@ public function exceptionShouldBeThrownIfTheObjectIsNotAResource(): void
      * After recurring call the parameters are set.
      *
      * @test
+     *
+     * @deprecated since 1.2.1.0 Get removed with `activateRecurring` method.
      */
     public function recurringForCardWith3dsShouldReturnAttributes(): void
     {
@@ -78,10 +65,12 @@ public function recurringForCardWith3dsShouldReturnAttributes(): void
      * Verify card without 3ds can activate recurring payments.
      *
      * @test
+     *
+     * @deprecated since 1.2.1.0 Get removed with `activateRecurring` method.
      */
     public function recurringForCardWithout3dsShouldActivateRecurringAtOnce(): void
     {
-        $privateKey = EnvironmentService::getTestPrivateKey(true);
+        $privateKey = TestEnvironmentService::getTestPrivateKey(true);
         if (empty($privateKey)) {
             $this->markTestIncomplete('No non 3ds private key set');
         }
@@ -110,7 +99,7 @@ public function paypalShouldBeAbleToActivateRecurringPayments(): void
     {
         /** @var Paypal $paypal */
         $paypal = $this->unzer->createPaymentType(new Paypal());
-        $recurring = $paypal->activateRecurring('https://dev.unzer.com', RecurrenceTypes::ONE_CLICK);
+        $recurring = $paypal->activateRecurring('https://dev.unzer.com');
         $this->assertPending($recurring);
         $this->assertNotEmpty($recurring->getReturnUrl());
     }
@@ -122,6 +111,7 @@ public function paypalShouldBeAbleToActivateRecurringPayments(): void
      */
     public function sepaDirectDebitShouldBeAbleToActivateRecurringPayments(): void
     {
+        $this->useLegacyKey();
         /** @var SepaDirectDebit $dd */
         $dd = $this->unzer->createPaymentType(new SepaDirectDebit('DE89370400440532013000'));
         $this->assertFalse($dd->isRecurring());
@@ -141,6 +131,7 @@ public function sepaDirectDebitShouldBeAbleToActivateRecurringPayments(): void
      */
     public function sepaDirectDebitSecuredShouldBeAbleToActivateRecurringPayments(): void
     {
+        $this->getUnzerObject()->setKey(TestEnvironmentService::getLegacyTestPrivateKey());
         /** @var SepaDirectDebitSecured $ddg */
         $ddg = $this->unzer->createPaymentType(new SepaDirectDebitSecured('DE89370400440532013000'));
         $this->assertFalse($ddg->isRecurring());
@@ -153,7 +144,7 @@ public function sepaDirectDebitSecuredShouldBeAbleToActivateRecurringPayments():
 
         $this->expectException(UnzerApiException::class);
         $this->expectExceptionCode(ApiResponseCodes::API_ERROR_RECURRING_ALREADY_ACTIVE);
-        $this->unzer->activateRecurringPayment($ddg, self::RETURN_URL, RecurrenceTypes::ONE_CLICK);
+        $this->unzer->activateRecurringPayment($ddg, self::RETURN_URL);
     }
 
     /**
diff --git a/vendor/unzerdev/php-sdk/test/integration/SetMetadataTest.php b/vendor/unzerdev/php-sdk/test/integration/SetMetadataTest.php
index 04750db..3391c16 100644
--- a/vendor/unzerdev/php-sdk/test/integration/SetMetadataTest.php
+++ b/vendor/unzerdev/php-sdk/test/integration/SetMetadataTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines integration tests to verify metadata functionalities.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\integration
  */
+
 namespace UnzerSDK\test\integration;
 
 use UnzerSDK\Constants\ApiResponseCodes;
diff --git a/vendor/unzerdev/php-sdk/test/integration/TransactionTypes/AuthorizationTest.php b/vendor/unzerdev/php-sdk/test/integration/TransactionTypes/AuthorizationTest.php
index a2cbe8a..200097e 100644
--- a/vendor/unzerdev/php-sdk/test/integration/TransactionTypes/AuthorizationTest.php
+++ b/vendor/unzerdev/php-sdk/test/integration/TransactionTypes/AuthorizationTest.php
@@ -1,32 +1,18 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines integration tests to verify interface and
  * functionality of the authorization transaction type.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\integration\TransactionTypes
  */
+
 namespace UnzerSDK\test\integration\TransactionTypes;
 
+use UnzerSDK\Constants\RecurrenceTypes;
 use UnzerSDK\Resources\AbstractUnzerResource;
 use UnzerSDK\Resources\Metadata;
 use UnzerSDK\Resources\PaymentTypes\BasePaymentType;
@@ -118,6 +104,7 @@ public function authorizationWithCustomerId(): Authorization
      * Verify authorization can be fetched.
      *
      * @depends authorizationWithCustomerId
+     *
      * @test
      *
      * @param Authorization $authorization
@@ -125,13 +112,14 @@ public function authorizationWithCustomerId(): Authorization
     public function authorizationCanBeFetched(Authorization $authorization): void
     {
         $fetchedAuthorization = $this->unzer->fetchAuthorization($authorization->getPaymentId());
-        $this->assertEquals($authorization->expose(), $fetchedAuthorization->expose());
+        $this->assertEquals($authorization->setCard3ds(false)->expose(), $fetchedAuthorization->expose());
     }
 
     /**
      * Verify authorization has the expected states.
      *
      * @test
+     *
      * @dataProvider authorizeHasExpectedStatesDP
      *
      * @param BasePaymentType|AbstractUnzerResource $paymentType
@@ -162,7 +150,60 @@ public function authorizeShouldAcceptAllParameters(): void
         $invoiceId = 'i' . self::generateRandomId();
         $paymentReference = 'paymentReference';
 
-        $authorize = $card->authorize(119.0, 'EUR', self::RETURN_URL, $customer, $orderId, $metadata, $basket, true, $invoiceId, $paymentReference);
+        $authorize = $card->authorize(119.0, 'EUR', self::RETURN_URL, $customer, $orderId, $metadata, $basket, true, $invoiceId, $paymentReference, RecurrenceTypes::ONE_CLICK);
+        $payment = $authorize->getPayment();
+
+        $this->assertSame($card, $payment->getPaymentType());
+        $this->assertEquals(119.0, $authorize->getAmount());
+        $this->assertEquals('EUR', $authorize->getCurrency());
+        $this->assertEquals(self::RETURN_URL, $authorize->getReturnUrl());
+        $this->assertSame($customer, $payment->getCustomer());
+        $this->assertEquals($orderId, $authorize->getOrderId());
+        $this->assertSame($metadata, $payment->getMetadata());
+        $this->assertSame($basket, $payment->getBasket());
+        $this->assertTrue($authorize->isCard3ds());
+        $this->assertEquals($invoiceId, $authorize->getInvoiceId());
+        $this->assertEquals($paymentReference, $authorize->getPaymentReference());
+
+        $fetchedAuthorize = $this->unzer->fetchAuthorization($authorize->getPaymentId());
+        $fetchedPayment = $fetchedAuthorize->getPayment();
+
+        $this->assertEquals($payment->getPaymentType()->expose(), $fetchedPayment->getPaymentType()->expose());
+        $this->assertEquals($authorize->getAmount(), $fetchedAuthorize->getAmount());
+        $this->assertEquals($authorize->getCurrency(), $fetchedAuthorize->getCurrency());
+        $this->assertEquals($authorize->getReturnUrl(), $fetchedAuthorize->getReturnUrl());
+        $this->assertEquals($payment->getCustomer()->expose(), $fetchedPayment->getCustomer()->expose());
+        $this->assertEquals($authorize->getOrderId(), $fetchedAuthorize->getOrderId());
+        $this->assertEquals($payment->getMetadata()->expose(), $fetchedPayment->getMetadata()->expose());
+        $this->assertEquals($payment->getBasket()->expose(), $fetchedPayment->getBasket()->expose());
+        $this->assertEquals($authorize->isCard3ds(), $fetchedAuthorize->isCard3ds());
+        $this->assertEquals($authorize->getInvoiceId(), $fetchedAuthorize->getInvoiceId());
+        $this->assertEquals($authorize->getPaymentReference(), $fetchedAuthorize->getPaymentReference());
+    }
+
+    /**
+     * Verify authorize accepts all parameters.
+     *
+     * @test
+     */
+    public function requestAuthorizationShouldAcceptAllParameters(): void
+    {
+        /** @var Card $card */
+        $card = $this->unzer->createPaymentType($this->createCardObject());
+        $customer = $this->getMinimalCustomer();
+        $orderId = 'o' . self::generateRandomId();
+        $metadata = (new Metadata())->addMetadata('key', 'value');
+        $basket = $this->createBasket();
+        $invoiceId = 'i' . self::generateRandomId();
+        $paymentReference = 'paymentReference';
+
+        $authorize = new Authorization(119.0, 'EUR', self::RETURN_URL);
+        $authorize->setRecurrenceType(RecurrenceTypes::ONE_CLICK, $card)
+            ->setOrderId($orderId)
+            ->setInvoiceId($invoiceId)
+            ->setPaymentReference($paymentReference);
+
+        $authorize = $this->unzer->performAuthorization($authorize, $card, $customer, $metadata, $basket);
         $payment = $authorize->getPayment();
 
         $this->assertSame($card, $payment->getPaymentType());
diff --git a/vendor/unzerdev/php-sdk/test/integration/TransactionTypes/CancelAfterAuthorizationTest.php b/vendor/unzerdev/php-sdk/test/integration/TransactionTypes/CancelAfterAuthorizationTest.php
index dd3d83e..4a30030 100644
--- a/vendor/unzerdev/php-sdk/test/integration/TransactionTypes/CancelAfterAuthorizationTest.php
+++ b/vendor/unzerdev/php-sdk/test/integration/TransactionTypes/CancelAfterAuthorizationTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines integration tests to verify cancellation of authorizations.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\integration\TransactionTypes
  */
+
 namespace UnzerSDK\test\integration\TransactionTypes;
 
 use UnzerSDK\Resources\TransactionTypes\Authorization;
diff --git a/vendor/unzerdev/php-sdk/test/integration/TransactionTypes/CancelAfterChargeTest.php b/vendor/unzerdev/php-sdk/test/integration/TransactionTypes/CancelAfterChargeTest.php
index 659eb4f..bd0b9b5 100644
--- a/vendor/unzerdev/php-sdk/test/integration/TransactionTypes/CancelAfterChargeTest.php
+++ b/vendor/unzerdev/php-sdk/test/integration/TransactionTypes/CancelAfterChargeTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines integration tests to verify cancellation of charges.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\integration\TransactionTypes
  */
+
 namespace UnzerSDK\test\integration\TransactionTypes;
 
 use UnzerSDK\Resources\PaymentTypes\SepaDirectDebit;
@@ -32,6 +17,11 @@
 
 class CancelAfterChargeTest extends BaseIntegrationTest
 {
+    protected function setUp(): void
+    {
+        $this->useLegacyKey();
+    }
+
     /**
      * Verify charge can be fetched by id.
      *
@@ -45,7 +35,7 @@ public function chargeShouldBeFetchable(): Charge
         $charge = $this->unzer->charge(100.0000, 'EUR', $paymentType, self::RETURN_URL);
         $fetchedCharge = $this->unzer->fetchChargeById($charge->getPayment()->getId(), $charge->getId());
 
-        $chargeArray = $charge->expose();
+        $chargeArray = $charge->setCard3ds(false)->expose();
         $this->assertEquals($chargeArray, $fetchedCharge->expose());
 
         return $charge;
@@ -55,6 +45,7 @@ public function chargeShouldBeFetchable(): Charge
      * Verify full refund of a charge.
      *
      * @test
+     *
      * @depends chargeShouldBeFetchable
      *
      * @param Charge $charge
diff --git a/vendor/unzerdev/php-sdk/test/integration/TransactionTypes/CancelTest.php b/vendor/unzerdev/php-sdk/test/integration/TransactionTypes/CancelTest.php
index 4a8b0ca..f399dcc 100644
--- a/vendor/unzerdev/php-sdk/test/integration/TransactionTypes/CancelTest.php
+++ b/vendor/unzerdev/php-sdk/test/integration/TransactionTypes/CancelTest.php
@@ -1,31 +1,17 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines integration tests to verify cancellation in general.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\integration\TransactionTypes
  */
+
 namespace UnzerSDK\test\integration\TransactionTypes;
 
+use UnzerSDK\Resources\TransactionTypes\Cancellation;
 use UnzerSDK\test\BaseIntegrationTest;
 
 class CancelTest extends BaseIntegrationTest
@@ -65,6 +51,7 @@ public function reversalShouldBeFetchableViaPaymentObject(): void
      */
     public function refundShouldBeFetchableViaUnzerObject(): void
     {
+        $this->useLegacyKey();
         $charge = $this->createCharge();
         $cancel = $charge->cancel();
         $fetchedCancel = $this->unzer->fetchRefundById($charge->getPayment()->getId(), $charge->getId(), $cancel->getId());
@@ -79,8 +66,10 @@ public function refundShouldBeFetchableViaUnzerObject(): void
      */
     public function refundShouldBeFetchableViaPaymentObject(): void
     {
+        $this->useLegacyKey();
         $charge = $this->createCharge();
-        $cancel = $charge->cancel();
+        $cancel = new Cancellation();
+        $this->getUnzerObject()->cancelChargedPayment($charge->getPayment(), $cancel);
         $fetchedCancel = $cancel->getPayment()->getCharge($charge->getId())->getCancellation($cancel->getId());
         $this->assertTransactionResourceHasBeenCreated($fetchedCancel);
         $this->assertEquals($cancel->expose(), $fetchedCancel->expose());
@@ -97,7 +86,7 @@ public function authorizationCancellationsShouldBeFetchableViaPaymentObject(): v
         $reversal = $authorization->cancel();
         $fetchedPayment = $this->unzer->fetchPayment($authorization->getPayment()->getId());
 
-        $cancellation = $fetchedPayment->getCancellation($reversal->getId());
+        $cancellation = $fetchedPayment->getAuthorization()->getCancellation($reversal->getId());
         $this->assertTransactionResourceHasBeenCreated($cancellation);
         $this->assertEquals($cancellation->expose(), $reversal->expose());
     }
@@ -109,13 +98,14 @@ public function authorizationCancellationsShouldBeFetchableViaPaymentObject(): v
      */
     public function chargeCancellationsShouldBeFetchableViaPaymentObject(): void
     {
+        $this->useLegacyKey();
         $charge = $this->createCharge();
-        $reversal = $charge->cancel();
+        $refund = $charge->cancel();
         $fetchedPayment = $this->unzer->fetchPayment($charge->getPayment()->getId());
 
-        $cancellation = $fetchedPayment->getCancellation($reversal->getId());
+        $cancellation = $fetchedPayment->getCharge($charge->getId())->getCancellation($refund->getId());
         $this->assertTransactionResourceHasBeenCreated($cancellation);
-        $this->assertEquals($cancellation->expose(), $reversal->expose());
+        $this->assertEquals($cancellation->expose(), $refund->expose());
     }
 
     /**
@@ -125,6 +115,7 @@ public function chargeCancellationsShouldBeFetchableViaPaymentObject(): void
      */
     public function cancelStatusIsSetCorrectly(): void
     {
+        $this->useLegacyKey();
         $charge = $this->createCharge();
         $reversal = $charge->cancel();
         $this->assertSuccess($reversal);
diff --git a/vendor/unzerdev/php-sdk/test/integration/TransactionTypes/ChargeAfterAuthorizationTest.php b/vendor/unzerdev/php-sdk/test/integration/TransactionTypes/ChargeAfterAuthorizationTest.php
index b96f567..8adfa04 100644
--- a/vendor/unzerdev/php-sdk/test/integration/TransactionTypes/ChargeAfterAuthorizationTest.php
+++ b/vendor/unzerdev/php-sdk/test/integration/TransactionTypes/ChargeAfterAuthorizationTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines integration tests to verify charge after authorization.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\integration\TransactionTypes
  */
+
 namespace UnzerSDK\test\integration\TransactionTypes;
 
 use UnzerSDK\test\BaseIntegrationTest;
diff --git a/vendor/unzerdev/php-sdk/test/integration/TransactionTypes/ChargeTest.php b/vendor/unzerdev/php-sdk/test/integration/TransactionTypes/ChargeTest.php
index 7b326e3..f9f489a 100644
--- a/vendor/unzerdev/php-sdk/test/integration/TransactionTypes/ChargeTest.php
+++ b/vendor/unzerdev/php-sdk/test/integration/TransactionTypes/ChargeTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines integration tests to verify charges in general.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\integration\TransactionTypes
  */
+
 namespace UnzerSDK\test\integration\TransactionTypes;
 
 use UnzerSDK\Constants\RecurrenceTypes;
@@ -32,7 +17,9 @@
 use UnzerSDK\Resources\PaymentTypes\Card;
 use UnzerSDK\Resources\PaymentTypes\InvoiceSecured;
 use UnzerSDK\Resources\PaymentTypes\SepaDirectDebit;
+use UnzerSDK\Resources\TransactionTypes\Charge;
 use UnzerSDK\test\BaseIntegrationTest;
+use UnzerSDK\test\Helper\TestEnvironmentService;
 
 class ChargeTest extends BaseIntegrationTest
 {
@@ -43,6 +30,7 @@ class ChargeTest extends BaseIntegrationTest
      */
     public function chargeShouldWorkWithTypeId(): void
     {
+        $this->useLegacyKey();
         $paymentType = $this->unzer->createPaymentType(new SepaDirectDebit('DE89370400440532013000'));
         $charge = $this->unzer->charge(100.0, 'EUR', $paymentType->getId(), self::RETURN_URL);
         $this->assertTransactionResourceHasBeenCreated($charge);
@@ -58,6 +46,7 @@ public function chargeShouldWorkWithTypeId(): void
      */
     public function chargeShouldWorkWithTypeObject(): void
     {
+        $this->useLegacyKey();
         $paymentType = $this->unzer->createPaymentType(new SepaDirectDebit('DE89370400440532013000'));
         $charge = $this->unzer->charge(100.0, 'EUR', $paymentType, self::RETURN_URL);
         $this->assertTransactionResourceHasBeenCreated($charge);
@@ -73,6 +62,7 @@ public function chargeShouldWorkWithTypeObject(): void
      */
     public function chargeStatusIsSetCorrectly(): void
     {
+        $this->useLegacyKey();
         $this->assertSuccess($this->createCharge());
     }
 
@@ -124,6 +114,60 @@ public function chargeShouldAcceptAllParameters(): void
         $this->assertEquals($payment->getBasket()->expose(), $fetchedPayment->getBasket()->expose());
     }
 
+    /**
+     * Verify requestCharge accepts all parameters.
+     *
+     * @test
+     */
+    public function requestChargeShouldAcceptAllParameters(): void
+    {
+        // prepare test data
+        /** @var Card $paymentType */
+        $paymentType = $this->unzer->createPaymentType($this->createCardObject());
+        $customer = $this->getMinimalCustomer();
+        $orderId = 'o'. self::generateRandomId();
+        $metadata = (new Metadata())->addMetadata('key', 'value');
+        $basket = $this->createBasket();
+        $invoiceId = 'i'. self::generateRandomId();
+        $paymentReference = 'paymentReference';
+        $recurrenceType = RecurrenceTypes::ONE_CLICK;
+
+        // perform request
+        $charge = new Charge(119.0, 'EUR', self::RETURN_URL);
+        $charge->setRecurrenceType(RecurrenceTypes::ONE_CLICK, $paymentType)
+            ->setOrderId($orderId)
+            ->setInvoiceId($invoiceId)
+            ->setPaymentReference($paymentReference);
+
+        $charge = $this->unzer->performCharge($charge, $paymentType, $customer, $metadata, $basket);
+
+        // verify the data sent and received match
+        $payment = $charge->getPayment();
+        $this->assertSame($paymentType, $payment->getPaymentType());
+        $this->assertEquals(119.0, $charge->getAmount());
+        $this->assertEquals('EUR', $charge->getCurrency());
+        $this->assertEquals(self::RETURN_URL, $charge->getReturnUrl());
+        $this->assertSame($customer, $payment->getCustomer());
+        $this->assertEquals($orderId, $charge->getOrderId());
+        $this->assertSame($metadata, $payment->getMetadata());
+        $this->assertSame($basket, $payment->getBasket());
+        $this->assertTrue($charge->isCard3ds());
+        $this->assertEquals($invoiceId, $charge->getInvoiceId());
+        $this->assertEquals($paymentReference, $charge->getPaymentReference());
+        $this->assertEquals($recurrenceType, $charge->getRecurrenceType());
+
+        // fetch the charge
+        $fetchedCharge = $this->unzer->fetchChargeById($charge->getPaymentId(), $charge->getId());
+
+        // verify the fetched transaction matches the initial transaction
+        $this->assertEquals($charge->expose(), $fetchedCharge->expose());
+        $fetchedPayment = $fetchedCharge->getPayment();
+        $this->assertEquals($payment->getPaymentType()->expose(), $fetchedPayment->getPaymentType()->expose());
+        $this->assertEquals($payment->getCustomer()->expose(), $fetchedPayment->getCustomer()->expose());
+        $this->assertEquals($payment->getMetadata()->expose(), $fetchedPayment->getMetadata()->expose());
+        $this->assertEquals($payment->getBasket()->expose(), $fetchedPayment->getBasket()->expose());
+    }
+
     /**
      * Verify charge accepts all parameters.
      *
@@ -131,6 +175,7 @@ public function chargeShouldAcceptAllParameters(): void
      */
     public function chargeWithCustomerShouldAcceptAllParameters(): void
     {
+        $this->getUnzerObject()->setKey(TestEnvironmentService::getLegacyTestPrivateKey());
         // prepare test data
         /** @var InvoiceSecured $ivg */
         $ivg = $this->unzer->createPaymentType(new InvoiceSecured());
@@ -159,6 +204,26 @@ public function chargeWithCustomerShouldAcceptAllParameters(): void
         $this->assertEquals($paymentReference, $charge->getPaymentReference());
 
         $fetchedCharge = $this->unzer->fetchChargeById($charge->getPaymentId(), $charge->getId());
-        $this->assertEquals($charge->expose(), $fetchedCharge->expose());
+        $this->assertEquals($charge->setCard3ds(false)->expose(), $fetchedCharge->expose());
+    }
+
+    /**
+     * Verify checkoutType for not supported type gets ignored by Api.
+     *
+     * @test
+     */
+    public function checkoutTypeGetsIgnordedByApiWithNotSupportedType()
+    {
+        $paymentType = $this->unzer->createPaymentType($this->createCardObject());
+        $charge = new Charge(99.99, 'EUR', self::RETURN_URL);
+        $charge->setCheckoutType('express', $paymentType);
+        $this->getUnzerObject()->performCharge($charge, $paymentType);
+
+        $fetchedCharge = $this->getUnzerObject()->fetchChargeById(
+            $charge->getPayment()->getId(),
+            $charge->getId()
+        );
+        $this->assertTrue($fetchedCharge->isPending());
+        $this->assertNull($fetchedCharge->getCheckoutType());
     }
 }
diff --git a/vendor/unzerdev/php-sdk/test/integration/TransactionTypes/PaylaterCancelTest.php b/vendor/unzerdev/php-sdk/test/integration/TransactionTypes/PaylaterCancelTest.php
new file mode 100644
index 0000000..05451e5
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/test/integration/TransactionTypes/PaylaterCancelTest.php
@@ -0,0 +1,200 @@
+<?php
+
+/** @noinspection PhpUnhandledExceptionInspection */
+/** @noinspection PhpDocMissingThrowsInspection */
+/**
+ * This class defines integration tests to verify cancellation of paylater invoice type.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+
+namespace UnzerSDK\test\integration\TransactionTypes;
+
+use UnzerSDK\Exceptions\UnzerApiException;
+use UnzerSDK\Resources\TransactionTypes\Cancellation;
+use UnzerSDK\Resources\TransactionTypes\Charge;
+use UnzerSDK\test\BaseIntegrationTest;
+
+/** Testing cancellations with payment type paylater-invoice. Default authorization amount is 99.99 €. */
+class PaylaterCancelTest extends BaseIntegrationTest
+{
+    /**
+     * @test
+     */
+    public function reversalIsPossibleViaUnzerFacade(): void
+    {
+        $authorization = $this->createPaylaterInvoiceAuthorization();
+        $payment = $authorization->getPayment();
+        $cancellation = (new Cancellation())->setInvoiceId('i' . self::generateRandomId());
+        $cancel = $this->unzer->cancelAuthorizedPayment($payment, $cancellation);
+
+        $this->assertTrue($cancel->isSuccess());
+        $this->assertNull($cancel->getParentResource()->getId());
+        $this->assertCount(1, $payment->getCancellations());
+        $this->assertCount(1, $payment->getReversals());
+        $this->assertCount(0, $authorization->getCancellations());
+    }
+
+    /**
+     * @test
+     */
+    public function reversalIsPossibleWOCancellationObject(): void
+    {
+        $authorization = $this->createPaylaterInvoiceAuthorization();
+        $payment = $authorization->getPayment();
+        $cancel = $this->unzer->cancelAuthorizedPayment($payment);
+
+        $this->assertTrue($cancel->isSuccess());
+        $this->assertNull($cancel->getParentResource()->getId());
+        $this->assertCount(1, $payment->getCancellations());
+        $this->assertCount(1, $payment->getReversals());
+        $this->assertCount(0, $authorization->getCancellations());
+    }
+
+    /**
+     * @test
+     */
+    public function reversalIsFetchableViaUnzerFacade(): void
+    {
+        $authorization = $this->createPaylaterInvoiceAuthorization();
+        $payment = $authorization->getPayment();
+        $cancel = $this->unzer->cancelAuthorizedPayment($payment, new Cancellation());
+        $fetchedCancel = $this->unzer->fetchPaymentReversal($payment, $cancel->getId());
+
+        $this->assertNull($fetchedCancel->getParentResource()->getId());
+        $this->assertEquals($cancel->getShortId(), $fetchedCancel->getShortId());
+        $this->assertEquals($payment, $fetchedCancel->getPayment());
+        $this->assertCount(1, $payment->getReversals());
+        $this->assertCount(0, $payment->getRefunds());
+    }
+
+    /**
+     * @test
+     */
+    public function verifyPartReversalIsPossible(): void
+    {
+        $authorization = $this->createPaylaterInvoiceAuthorization();
+        $reversalAmount = 33.33;
+        $this->assertAmounts($authorization->getPayment(), 99.99, 0, 99.99, 0);
+
+        $this->unzer->cancelAuthorizedPayment($authorization->getPayment(), new Cancellation($reversalAmount));
+        $this->assertAmounts($authorization->getPayment(), 66.66, 0, 66.66, 0);
+    }
+
+    /**
+     * @test
+     */
+    public function fullRefundWorksViaUnzerFacadeAsExpected(): void
+    {
+        $authorization = $this->createPaylaterInvoiceAuthorization();
+        $payment = $authorization->getPayment();
+        $charge = $this->unzer->performChargeOnPayment($payment, new Charge());
+        $cancellation = (new Cancellation())->setInvoiceId('i' . self::generateRandomId());
+        $cancel = $this->unzer->cancelChargedPayment($payment, $cancellation);
+
+        $this->assertInstanceOf(Charge::class, $cancel->getParentResource());
+        $this->assertNull($cancel->getParentResource()->getId());
+
+        $this->assertTrue($cancel->isSuccess());
+        $this->assertCount(1, $payment->getCancellations());
+        $this->assertCount(1, $payment->getRefunds());
+        $this->assertCount(0, $payment->getReversals());
+        $this->assertCount(0, $charge->getCancellations());
+    }
+
+    /**
+     * @test
+     */
+    public function fullRefundIsPossibleWOCancellationObject(): void
+    {
+        $authorization = $this->createPaylaterInvoiceAuthorization();
+        $payment = $authorization->getPayment();
+        $charge = $this->unzer->performChargeOnPayment($payment, new Charge());
+        $cancel = $this->unzer->cancelChargedPayment($payment);
+
+        $this->assertInstanceOf(Charge::class, $cancel->getParentResource());
+        $this->assertNull($cancel->getParentResource()->getId());
+
+        $this->assertTrue($cancel->isSuccess());
+        $this->assertCount(1, $payment->getCancellations());
+        $this->assertCount(1, $payment->getRefunds());
+        $this->assertCount(0, $payment->getReversals());
+        $this->assertCount(0, $charge->getCancellations());
+    }
+
+    /**
+     * @test
+     */
+    public function partRefundIsPossibleViaUnzerFacade(): void
+    {
+        $authorization = $this->createPaylaterInvoiceAuthorization();
+        $payment = $authorization->getPayment();
+        $this->unzer->performChargeOnPayment($payment, new Charge());
+
+        $cancel1 = $this->unzer->cancelChargedPayment($payment, new Cancellation(22.22));
+        $cancel2 = $this->unzer->cancelChargedPayment($payment, new Cancellation(33.33));
+        $cancel3 = $this->unzer->cancelChargedPayment($payment, new Cancellation(44.44));
+
+        $this->assertTrue($cancel1->isSuccess());
+        $this->assertEquals(22.22, $cancel1->getAmount());
+
+        $this->assertTrue($cancel2->isSuccess());
+        $this->assertEquals(33.33, $cancel2->getAmount());
+
+        $this->assertTrue($cancel3->isSuccess());
+        $this->assertEquals(44.44, $cancel3->getAmount());
+
+        $this->assertCount(3, $payment->getCancellations());
+        $refunds = $payment->getRefunds();
+        $this->assertCount(3, $refunds);
+        $this->assertArrayHasKey('s-cnl-1', $refunds);
+        $this->assertArrayHasKey('s-cnl-2', $refunds);
+        $this->assertArrayHasKey('s-cnl-3', $refunds);
+    }
+
+    /**
+     * @test
+     */
+    public function reversalOnChargedPaymentThrowsException(): void
+    {
+        $authorization = $this->createPaylaterInvoiceAuthorization();
+        $payment = $authorization->getPayment();
+        $charge1 = $this->unzer->performChargeOnPayment($payment, new Charge(11.11));
+        $this->expectException(UnzerApiException::class);
+
+        $cancel = $this->unzer->cancelAuthorizedPayment($payment, new Cancellation());
+        $this->assertTrue($cancel->isSuccess());
+    }
+
+    /**
+     * @test
+     */
+    public function ChargeToHighAmountThrowsException(): void
+    {
+        $authorization = $this->createPaylaterInvoiceAuthorization();
+        $payment = $authorization->getPayment();
+        $this->expectException(UnzerApiException::class);
+        $this->unzer->performChargeOnPayment($payment, new Charge(100));
+    }
+
+    /**
+     * @test
+     */
+    public function refundShouldBeFetchableViaUnzerObject(): void
+    {
+        $authorization = $this->createPaylaterInvoiceAuthorization();
+        $payment = $authorization->getPayment();
+        $this->unzer->performChargeOnPayment($payment, new Charge());
+        $cancel = $this->unzer->cancelChargedPayment($payment, new Cancellation(33.33));
+
+        $fetchedCancel = $this->unzer->fetchPaymentRefund($payment, $cancel->getId());
+
+        $this->assertEquals($cancel->getShortId(), $fetchedCancel->getShortId());
+        $this->assertEquals($payment->getId(), $fetchedCancel->getPayment()->getId());
+        $this->assertInstanceOf(Charge::class, $fetchedCancel->getParentResource());
+
+        $this->assertCount(1, $payment->getCancellations());
+        $this->assertCount(1, $payment->getRefunds());
+    }
+}
diff --git a/vendor/unzerdev/php-sdk/test/integration/TransactionTypes/PayoutTest.php b/vendor/unzerdev/php-sdk/test/integration/TransactionTypes/PayoutTest.php
index dcecf7f..5f0c823 100644
--- a/vendor/unzerdev/php-sdk/test/integration/TransactionTypes/PayoutTest.php
+++ b/vendor/unzerdev/php-sdk/test/integration/TransactionTypes/PayoutTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines integration tests to verify payout transactions.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\integration\TransactionTypes
  */
+
 namespace UnzerSDK\test\integration\TransactionTypes;
 
 use UnzerSDK\Resources\Metadata;
@@ -34,6 +19,7 @@
 use UnzerSDK\Resources\TransactionTypes\Payout;
 use UnzerSDK\Services\ResourceService;
 use UnzerSDK\test\BaseIntegrationTest;
+use UnzerSDK\test\Helper\TestEnvironmentService;
 
 class PayoutTest extends BaseIntegrationTest
 {
@@ -68,6 +54,7 @@ public function payoutCanBeCalledForCardType(): void
      */
     public function payoutCanBeCalledForSepaDirectDebitType(): void
     {
+        $this->useLegacyKey();
         $sepa = new SepaDirectDebit('DE89370400440532013000');
         $this->unzer->createPaymentType($sepa);
         $payout = $sepa->payout(100.0, 'EUR', self::RETURN_URL);
@@ -87,6 +74,7 @@ public function payoutCanBeCalledForSepaDirectDebitType(): void
      */
     public function payoutCanBeCalledForSepaDirectDebitSecuredType(): void
     {
+        $this->getUnzerObject()->setKey(TestEnvironmentService::getLegacyTestPrivateKey());
         $sepa = new SepaDirectDebitSecured('DE89370400440532013000');
         $this->unzer->createPaymentType($sepa);
         $customer = $this->getMaximumCustomer()->setShippingAddress($this->getBillingAddress());
@@ -100,7 +88,7 @@ public function payoutCanBeCalledForSepaDirectDebitSecuredType(): void
         $this->assertEquals(self::RETURN_URL, $payout->getReturnUrl());
         $this->assertAmounts($payment, 0, 0, -100, 0);
     }
-    
+
     /**
      * Verify Payout transaction is fetched with Payment resource.
      *
diff --git a/vendor/unzerdev/php-sdk/test/integration/TransactionTypes/ShipmentTest.php b/vendor/unzerdev/php-sdk/test/integration/TransactionTypes/ShipmentTest.php
index e3f5644..b5cea7b 100644
--- a/vendor/unzerdev/php-sdk/test/integration/TransactionTypes/ShipmentTest.php
+++ b/vendor/unzerdev/php-sdk/test/integration/TransactionTypes/ShipmentTest.php
@@ -1,36 +1,27 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines integration tests to verify interface and functionality of shipment.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\integration\TransactionTypes
  */
+
 namespace UnzerSDK\test\integration\TransactionTypes;
 
 use UnzerSDK\Resources\PaymentTypes\InvoiceSecured;
 use UnzerSDK\test\BaseIntegrationTest;
+use UnzerSDK\test\Helper\TestEnvironmentService;
 
 class ShipmentTest extends BaseIntegrationTest
 {
+    protected function setUp(): void
+    {
+        $this->getUnzerObject(TestEnvironmentService::getLegacyTestPrivateKey());
+    }
+
     /**
      * Verify shipment transaction can be called.
      *
diff --git a/vendor/unzerdev/php-sdk/test/integration/WebhookTest.php b/vendor/unzerdev/php-sdk/test/integration/WebhookTest.php
index 57fa49a..5ea8e80 100644
--- a/vendor/unzerdev/php-sdk/test/integration/WebhookTest.php
+++ b/vendor/unzerdev/php-sdk/test/integration/WebhookTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines integration tests to verify Webhook features.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\integration
  */
+
 namespace UnzerSDK\test\integration;
 
 use UnzerSDK\Constants\ApiResponseCodes;
@@ -31,6 +16,7 @@
 use UnzerSDK\Exceptions\UnzerApiException;
 use UnzerSDK\Resources\Webhook;
 use UnzerSDK\test\BaseIntegrationTest;
+
 use function count;
 use function in_array;
 
@@ -186,6 +172,7 @@ public function allWebhooksShouldBeRemovableAtOnce(): void
      * Verify setting multiple events at once.
      *
      * @test
+     *
      * @depends allWebhooksShouldBeRemovableAtOnce
      */
     public function bulkSettingWebhookEventsShouldBePossible(): void
@@ -249,7 +236,7 @@ private function generateUniqueUrl(): string
     /**
      * Returns true if the given Webhook exists in the given array.
      *
-     * @param $webhooksArray
+     * @param         $webhooksArray
      * @param Webhook $webhook
      *
      * @return bool
diff --git a/vendor/unzerdev/php-sdk/test/unit/Adapter/ApplepaySessionTest.php b/vendor/unzerdev/php-sdk/test/unit/Adapter/ApplepaySessionTest.php
index 84dfa01..d2a2258 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Adapter/ApplepaySessionTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Adapter/ApplepaySessionTest.php
@@ -2,26 +2,8 @@
 /*
  *  Test class for ApplepaySession.
  *
- *  Copyright (C) 2021 - today Unzer E-Com GmbH
- *
- *  Licensed under the Apache License, Version 2.0 (the "License");
- *  you may not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS,
- *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- *
  *  @link  https://docs.unzer.com/
  *
- *  @author  David Owusu <development@unzer.com>
- *
- *  @package  UnzerSDK
- *
  */
 
 namespace UnzerSDK\test\unit\Adapter;
diff --git a/vendor/unzerdev/php-sdk/test/unit/Constants/PaymentStateTest.php b/vendor/unzerdev/php-sdk/test/unit/Constants/PaymentStateTest.php
index e80cd3a..dd1300d 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Constants/PaymentStateTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Constants/PaymentStateTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of the resource name service.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Constants;
 
 use UnzerSDK\Constants\PaymentState;
@@ -36,6 +21,7 @@ class PaymentStateTest extends BasePaymentTest
      * This should verify the mapping of the payment state to the state code.
      *
      * @test
+     *
      * @dataProvider codeToNameDataProvider
      *
      * @param integer $code
@@ -50,6 +36,7 @@ public function shouldMapCodeToName($code, $name): void
      * This should verify the mapping of the payment state to the state code.
      *
      * @test
+     *
      * @dataProvider nameToCodeDataProvider
      *
      * @param integer $code
@@ -69,7 +56,7 @@ public function mapCodeToNameShouldThrowAnExceptionIfTheCodeIsUnknown(): void
     {
         $this->expectException(RuntimeException::class);
 
-        PaymentState::mapStateCodeToName(6);
+        PaymentState::mapStateCodeToName(7);
     }
 
     /**
diff --git a/vendor/unzerdev/php-sdk/test/unit/DummyResource.php b/vendor/unzerdev/php-sdk/test/unit/DummyResource.php
index 2bd54fe..2a7f34c 100644
--- a/vendor/unzerdev/php-sdk/test/unit/DummyResource.php
+++ b/vendor/unzerdev/php-sdk/test/unit/DummyResource.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines a dummy resource used for unit tests.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit;
 
 use UnzerSDK\Adapter\HttpAdapterInterface;
@@ -63,7 +48,7 @@ public function jsonSerialize()
         return '{"dummyResource": "JsonSerialized"}';
     }
 
-    public function getUri($appendId = true, $httpMethod = HttpAdapterInterface::REQUEST_GET): string
+    public function getUri(bool $appendId = true, string $httpMethod = HttpAdapterInterface::REQUEST_GET): string
     {
         return '/my/uri' . ($appendId ? '/123' : '');
     }
diff --git a/vendor/unzerdev/php-sdk/test/unit/Exceptions/UnzerApiExceptionTest.php b/vendor/unzerdev/php-sdk/test/unit/Exceptions/UnzerApiExceptionTest.php
index c793f7a..0d2f129 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Exceptions/UnzerApiExceptionTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Exceptions/UnzerApiExceptionTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of the UnzerApiException.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Exceptions;
 
 use UnzerSDK\Exceptions\UnzerApiException;
@@ -49,6 +34,7 @@ public function unzerApiExceptionShouldReturnDefaultDataWhenNoneIsSet(): void
      * Verify the exception stores the given data.
      *
      * @test
+     *
      * @dataProvider exceptionDataProvider
      *
      * @param array $expected
diff --git a/vendor/unzerdev/php-sdk/test/unit/Resources/AbstractUnzerResourceTest.php b/vendor/unzerdev/php-sdk/test/unit/Resources/AbstractUnzerResourceTest.php
index 2409f85..2212a5c 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Resources/AbstractUnzerResourceTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Resources/AbstractUnzerResourceTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of the AbstractUnzerResource.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Resources;
 
 use DateTime;
@@ -83,6 +68,8 @@ public function settersAndGettersShouldWork(): void
 
         $customer->setFetchedAt(new DateTime('2018-12-03'));
         $this->assertEquals(new DateTime('2018-12-03'), $customer->getFetchedAt());
+
+        $this->assertEquals(Unzer::API_VERSION, $customer->getApiVersion());
     }
 
     /**
@@ -188,7 +175,7 @@ public function fetchPaymentContainsNoTypeNameInUri(AbstractUnzerResource $resou
 
     /**
      * Verify that installment plans use the correct path for fetching. Special case, fetching Instalmentplans contains
-     * hinstallment-secured as parent resource that should appear in resource path.
+     * Installment-secured as parent resource that should appear in resource path.
      *
      * @test
      */
@@ -493,8 +480,8 @@ public function fetchUriDataProvider()
             'Webhooks' => [new Webhook(), 'parent/resource/path/webhooks'],
             'Recurring' => [new Recurring('s-crd-123', ''), 'parent/resource/path/types/s-crd-123/recurring'],
             'Payout' => [new Payout(), 'parent/resource/path/payouts'],
-            'PayPage charge' => [new Paypage(123.4567, 'EUR', 'url'), 'parent/resource/path/paypage/charge'],
-            'PayPage authorize' => [(new Paypage(123.4567, 'EUR', 'url'))->setAction(TransactionTypes::AUTHORIZATION), 'parent/resource/path/paypage/authorize'],
+            'PayPage charge' => [new Paypage(123.4567, 'EUR', 'url'), 'parent/resource/path/paypage'],
+            'PayPage authorize' => [(new Paypage(123.4567, 'EUR', 'url'))->setAction(TransactionTypes::AUTHORIZATION), 'parent/resource/path/paypage'],
         ];
     }
 }
diff --git a/vendor/unzerdev/php-sdk/test/unit/Resources/BasketTest.php b/vendor/unzerdev/php-sdk/test/unit/Resources/BasketTest.php
index 12602ea..fbf4af9 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Resources/BasketTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Resources/BasketTest.php
@@ -1,35 +1,21 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of the Basket resource.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Resources;
 
+use stdClass;
 use UnzerSDK\Resources\Basket;
 use UnzerSDK\Resources\EmbeddedResources\BasketItem;
 use UnzerSDK\test\BasePaymentTest;
-use stdClass;
+use UnzerSDK\Unzer;
 
 class BasketTest extends BasePaymentTest
 {
@@ -44,6 +30,7 @@ public function gettersAndSettersShouldWorkProperly(): void
         $this->assertEquals(0, $basket->getAmountTotalGross());
         $this->assertEquals(0, $basket->getAmountTotalDiscount());
         $this->assertEquals(0, $basket->getAmountTotalVat());
+        $this->assertEquals(0, $basket->getTotalValueGross());
         $this->assertEquals('EUR', $basket->getCurrencyCode());
         $this->assertEquals('', $basket->getNote());
         $this->assertEquals('', $basket->getOrderId());
@@ -51,12 +38,14 @@ public function gettersAndSettersShouldWorkProperly(): void
         $this->assertNull($basket->getBasketItemByIndex(1));
 
         $basket->setAmountTotalGross(12.34);
+        $basket->setTotalValueGross(99.99);
         $basket->setAmountTotalDiscount(34.56);
         $basket->setAmountTotalVat(45.67);
         $basket->setCurrencyCode('USD');
         $basket->setNote('This is something I have to remember!');
         $basket->setOrderId('myOrderId');
         $this->assertEquals(12.34, $basket->getAmountTotalGross());
+        $this->assertEquals(99.99, $basket->getTotalValueGross());
         $this->assertEquals(34.56, $basket->getAmountTotalDiscount());
         $this->assertEquals(45.67, $basket->getAmountTotalVat());
         $this->assertEquals('USD', $basket->getCurrencyCode());
@@ -155,4 +144,39 @@ public function referenceIdShouldBeAutomaticallySetToTheArrayIndexIfItIsNotSet()
         $this->assertEquals('0', $basketItem3->getBasketItemReferenceId());
         $this->assertEquals('1', $basketItem4->getBasketItemReferenceId());
     }
+
+    /**
+     * Verify basket provides expected API version based ond set parameters.
+     *
+     * @test
+     *
+     * @dataProvider getApiVersionShouldReturnExpectedVersionDP
+     *
+     * @param Basket $basket
+     * @param        $expectedApiVersion
+     */
+    public function getApiVersionShouldReturnExpectedVersion(Basket $basket, $expectedApiVersion): void
+    {
+        $this->assertEquals($expectedApiVersion, $basket->getApiVersion());
+    }
+
+    //<editor-fold desc="Data provider">
+
+    /**
+     * @return array
+     */
+    public function getApiVersionShouldReturnExpectedVersionDP(): array
+    {
+        $v1Basket = (new Basket())->setAmountTotalGross(100);
+        $v2Basket = (new Basket())->setTotalValueGross(100);
+        $mixedBasket = (new Basket())->setAmountTotalGross(100)->setTotalValueGross(100);
+        return [
+            'empty basket ' => [new Basket(), Unzer::API_VERSION],
+            'minimum v1 basket ' => [$v1Basket, Unzer::API_VERSION],
+            'minimum v2 basket ' => [$v2Basket, BasePaymentTest::API_VERSION_2],
+            'mixed v1/v2 basket ' => [$mixedBasket, BasePaymentTest::API_VERSION_2],
+        ];
+    }
+
+    //</editor-fold>
 }
diff --git a/vendor/unzerdev/php-sdk/test/unit/Resources/ConfigTest.php b/vendor/unzerdev/php-sdk/test/unit/Resources/ConfigTest.php
new file mode 100644
index 0000000..dab4ba0
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/test/unit/Resources/ConfigTest.php
@@ -0,0 +1,64 @@
+<?php
+
+/** @noinspection PhpUnhandledExceptionInspection */
+/** @noinspection PhpDocMissingThrowsInspection */
+/**
+ * This class defines unit tests to verify functionality of the Config resource.
+ *
+ * @link     https://docs.unzer.com/
+ *
+ */
+
+namespace UnzerSDK\test\unit\Resources;
+
+use UnzerSDK\Resources\Config;
+use UnzerSDK\test\BasePaymentTest;
+
+class ConfigTest extends BasePaymentTest
+{
+    /**
+     * Verify the constructor of the webhook resource behaves as expected.
+     *
+     * @test
+     */
+    public function getterAndSetterWorkAsExpected(): void
+    {
+        $config = new Config();
+        $this->assertNull($config->getDataPrivacyConsent());
+        $this->assertNull($config->getDataPrivacyDeclaration());
+        $this->assertNull($config->getTermsAndConditions());
+        $this->assertIsEmptyArray($config->getQueryParams());
+
+        $config->setDataPrivacyConsent('dataPrivacyConsent')
+            ->setDataPrivacyDeclaration('dataPrivacyDeclaration')
+            ->setTermsAndConditions('termsAndConditions');
+
+        $this->assertEquals('dataPrivacyConsent', $config->getDataPrivacyConsent());
+        $this->assertEquals('dataPrivacyDeclaration', $config->getDataPrivacyDeclaration());
+        $this->assertEquals('termsAndConditions', $config->getTermsAndConditions());
+    }
+
+    /**
+     * Verify query params can be set via Config class.
+     *
+     * @test
+     */
+    public function queryParameterCanBeSetViaConfigClass(): void
+    {
+        $config = new Config();
+        $queryParams = $config->getQueryParams();
+        $this->assertIsEmptyArray($queryParams);
+
+        $queryArray = [
+            'param1' => 'param1',
+            'param2' => 'param2',
+            'param3' => 'param3',
+        ];
+
+        $config->setQueryParams($queryArray);
+        $updatedParams = $config->getQueryParams();
+        $this->assertEquals('param1', $updatedParams['param1']);
+        $this->assertEquals('param2', $updatedParams['param2']);
+        $this->assertEquals('param3', $updatedParams['param3']);
+    }
+}
diff --git a/vendor/unzerdev/php-sdk/test/unit/Resources/CustomerFactoryTest.php b/vendor/unzerdev/php-sdk/test/unit/Resources/CustomerFactoryTest.php
index 826521c..94d2488 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Resources/CustomerFactoryTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Resources/CustomerFactoryTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of the customer factory.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Resources;
 
 use UnzerSDK\Constants\CompanyCommercialSectorItems;
diff --git a/vendor/unzerdev/php-sdk/test/unit/Resources/CustomerTest.php b/vendor/unzerdev/php-sdk/test/unit/Resources/CustomerTest.php
index c52fa05..0f11b1f 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Resources/CustomerTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Resources/CustomerTest.php
@@ -1,34 +1,20 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of the Customer resource.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Resources;
 
 use UnzerSDK\Constants\CompanyCommercialSectorItems;
 use UnzerSDK\Constants\CompanyRegistrationTypes;
 use UnzerSDK\Constants\Salutations;
+use UnzerSDK\Resources\EmbeddedResources\CompanyOwner;
 use UnzerSDK\Unzer;
 use UnzerSDK\Interfaces\ResourceServiceInterface;
 use UnzerSDK\Resources\Customer;
@@ -134,7 +120,8 @@ public function settersAndGettersOfShippingAddressShouldWork(): void
             ->setName('shipping_name')
             ->setCity('shipping_city')
             ->setZip('shipping_zip')
-            ->setStreet('shipping_street');
+            ->setStreet('shipping_street')
+            ->setShippingType('shipping_type');
 
         $customer = new Customer();
         $shippingAddress = $customer->getBillingAddress();
@@ -144,6 +131,7 @@ public function settersAndGettersOfShippingAddressShouldWork(): void
         $this->assertNull($shippingAddress->getCity());
         $this->assertNull($shippingAddress->getZip());
         $this->assertNull($shippingAddress->getStreet());
+        $this->assertNull($shippingAddress->getShippingType());
 
         $customer->setShippingAddress($address);
         $shippingAddress = $customer->getShippingAddress();
@@ -153,6 +141,7 @@ public function settersAndGettersOfShippingAddressShouldWork(): void
         $this->assertEquals('shipping_city', $shippingAddress->getCity());
         $this->assertEquals('shipping_zip', $shippingAddress->getZip());
         $this->assertEquals('shipping_street', $shippingAddress->getStreet());
+        $this->assertEquals('shipping_type', $shippingAddress->getShippingType());
     }
 
     /**
@@ -167,6 +156,8 @@ public function gettersAndSettersOfCompanyInfoShouldWork(): void
         $this->assertNull($companyInfo->getCommercialRegisterNumber());
         $this->assertNull($companyInfo->getFunction());
         $this->assertNull($companyInfo->getRegistrationType());
+        $this->assertNull($companyInfo->getCompanyType());
+        $this->assertNull($companyInfo->getOwner());
 
         $companyInfo->setCommercialSector(CompanyCommercialSectorItems::ACCOMMODATION);
         $this->assertSame(CompanyCommercialSectorItems::ACCOMMODATION, $companyInfo->getCommercialSector());
@@ -180,6 +171,15 @@ public function gettersAndSettersOfCompanyInfoShouldWork(): void
         $companyInfo->setRegistrationType(CompanyRegistrationTypes::REGISTRATION_TYPE_REGISTERED);
         $this->assertSame(CompanyRegistrationTypes::REGISTRATION_TYPE_REGISTERED, $companyInfo->getRegistrationType());
 
+        $companyInfo->setCompanyType('companyType');
+        $this->assertSame('companyType', $companyInfo->getCompanyType());
+
+        $owner = (new CompanyOwner())->setFirstname('firstname')
+            ->setLastname('lastname')
+            ->setBirthdate('01.01.1999');
+        $companyInfo->setOwner($owner);
+        $this->assertEquals($owner, $companyInfo->getOwner());
+
         $customer = new Customer();
         $this->assertNull($customer->getCompanyInfo());
         $customer->setCompanyInfo($companyInfo);
@@ -312,6 +312,38 @@ public function customerShouldBeUpdateable(): void
         $this->assertEquals('country code', $geoLocation->getCountryCode());
     }
 
+    /**
+     * Verify that CompanyOwner data are correctly set when handling a response.
+     *
+     * @test
+     */
+    public function handleResponseShouldSetCompanyOwnerData()
+    {
+        $customer = new Customer();
+        $this->assertEmpty($customer->getCompanyInfo());
+
+        $owner = (object)[
+            'firstname' => 'firstname',
+            'lastname' => 'lastname',
+            'birthdate' => 'birthdate',
+        ];
+
+        $customerResponse = (object)[
+            'companyInfo' => (object)[
+                'owner' => $owner
+            ]
+        ];
+
+        $customer->handleResponse($customerResponse);
+
+        $this->assertNotEmpty($customer->getCompanyInfo());
+        $companyOwner = $customer->getCompanyInfo()->getOwner();
+        $this->assertNotEmpty($companyOwner);
+        $this->assertEquals('firstname', $companyOwner->getFirstname());
+        $this->assertEquals('lastname', $companyOwner->getLastname());
+        $this->assertEquals('birthdate', $companyOwner->getBirthdate());
+    }
+
     //</editor-fold>
 
     //<editor-fold desc="Data providers">
diff --git a/vendor/unzerdev/php-sdk/test/unit/Resources/DummyUnzerResource.php b/vendor/unzerdev/php-sdk/test/unit/Resources/DummyUnzerResource.php
index 22dc6b8..06d4bbc 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Resources/DummyUnzerResource.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Resources/DummyUnzerResource.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This dummy class is used to verify certain behaviour of the AbstractUnzerResource.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Resources;
 
 use UnzerSDK\Resources\AbstractUnzerResource;
diff --git a/vendor/unzerdev/php-sdk/test/unit/Resources/EmbeddedResources/AmountTest.php b/vendor/unzerdev/php-sdk/test/unit/Resources/EmbeddedResources/AmountTest.php
index 0d1b3da..0f8d894 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Resources/EmbeddedResources/AmountTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Resources/EmbeddedResources/AmountTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of the embedded Amount resource.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Resources\EmbeddedResources;
 
 use UnzerSDK\Resources\EmbeddedResources\Amount;
diff --git a/vendor/unzerdev/php-sdk/test/unit/Resources/EmbeddedResources/ApplePayHeaderTest.php b/vendor/unzerdev/php-sdk/test/unit/Resources/EmbeddedResources/ApplePayHeaderTest.php
index 0dc6a20..372e1b2 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Resources/EmbeddedResources/ApplePayHeaderTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Resources/EmbeddedResources/ApplePayHeaderTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of the embedded Applepay header resource.
  *
- * Copyright (C) 2021 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  David Owusu <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Resources\EmbeddedResources;
 
 use UnzerSDK\Resources\EmbeddedResources\ApplePayHeader;
diff --git a/vendor/unzerdev/php-sdk/test/unit/Resources/EmbeddedResources/BasketItemTest.php b/vendor/unzerdev/php-sdk/test/unit/Resources/EmbeddedResources/BasketItemTest.php
index a422db7..bf5b3b1 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Resources/EmbeddedResources/BasketItemTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Resources/EmbeddedResources/BasketItemTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of the embedded BasketItem resource.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Resources\EmbeddedResources;
 
 use UnzerSDK\Resources\EmbeddedResources\BasketItem;
@@ -42,6 +27,8 @@ public function settersAndGettersShouldWork(): void
         $this->assertEquals(1, $basketItem->getQuantity());
         $this->assertEquals(0, $basketItem->getAmountDiscount());
         $this->assertEquals(0, $basketItem->getAmountGross());
+        $this->assertEquals(0, $basketItem->getAmountPerUnitGross());
+        $this->assertEquals(0, $basketItem->getAmountDiscountPerUnitGross());
         $this->assertEquals(0, $basketItem->getAmountPerUnit());
         $this->assertEquals(0, $basketItem->getAmountNet());
         $this->assertEquals(0, $basketItem->getAmountVat());
@@ -59,6 +46,8 @@ public function settersAndGettersShouldWork(): void
         $basketItem->setAmountNet(6543);
         $basketItem->setAmountVat(5432);
         $basketItem->setVat(6543);
+        $basketItem->setAmountPerUnitGross(5432);
+        $basketItem->setAmountDiscountPerUnitGross(4321);
         $basketItem->setBasketItemReferenceId('myRefId');
         $basketItem->setUnit('myUnit');
         $basketItem->setTitle('myTitle');
@@ -73,6 +62,8 @@ public function settersAndGettersShouldWork(): void
         $this->assertEquals(6543, $basketItem->getAmountNet());
         $this->assertEquals(5432, $basketItem->getAmountVat());
         $this->assertEquals(6543, $basketItem->getVat());
+        $this->assertEquals(5432, $basketItem->getAmountPerUnitGross());
+        $this->assertEquals(4321, $basketItem->getAmountDiscountPerUnitGross());
         $this->assertEquals('myRefId', $basketItem->getBasketItemReferenceId());
         $this->assertEquals('myUnit', $basketItem->getUnit());
         $this->assertEquals('myTitle', $basketItem->getTitle());
diff --git a/vendor/unzerdev/php-sdk/test/unit/Resources/EmbeddedResources/CompanyOwnerTest.php b/vendor/unzerdev/php-sdk/test/unit/Resources/EmbeddedResources/CompanyOwnerTest.php
new file mode 100644
index 0000000..f25bda5
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/test/unit/Resources/EmbeddedResources/CompanyOwnerTest.php
@@ -0,0 +1,36 @@
+<?php
+/*
+ *  Test company owner class for B2B customer.
+ *
+ *  @link  https://docs.unzer.com/
+ *
+ */
+
+namespace UnzerSDK\test\unit\Resources\EmbeddedResources;
+
+use UnzerSDK\Resources\EmbeddedResources\CompanyOwner;
+use UnzerSDK\test\BasePaymentTest;
+
+class CompanyOwnerTest extends BasePaymentTest
+{
+    /**
+     * Verify setter and getter functionality.
+     *
+     * @test
+     */
+    public function settersAndGettersShouldWork(): void
+    {
+        $owner = new CompanyOwner();
+        $this->assertNull($owner->getFirstname());
+        $this->assertNull($owner->getLastname());
+        $this->assertNull($owner->getBirthdate());
+
+        $owner->setFirstname('firstname')
+            ->setLastname('lastname')
+            ->setBirthdate('01.01.1999');
+
+        $this->assertEquals('firstname', $owner->getFirstname());
+        $this->assertEquals('lastname', $owner->getLastname());
+        $this->assertEquals('01.01.1999', $owner->getBirthdate());
+    }
+}
diff --git a/vendor/unzerdev/php-sdk/test/unit/Resources/EmbeddedResources/GeoLocationTest.php b/vendor/unzerdev/php-sdk/test/unit/Resources/EmbeddedResources/GeoLocationTest.php
index 1ac024e..19c9d6e 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Resources/EmbeddedResources/GeoLocationTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Resources/EmbeddedResources/GeoLocationTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of the embedded GeoLocation resource.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Resources\EmbeddedResources;
 
 use UnzerSDK\Resources\EmbeddedResources\GeoLocation;
diff --git a/vendor/unzerdev/php-sdk/test/unit/Resources/EmbeddedResources/RiskDataTest.php b/vendor/unzerdev/php-sdk/test/unit/Resources/EmbeddedResources/RiskDataTest.php
new file mode 100644
index 0000000..1fa5123
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/test/unit/Resources/EmbeddedResources/RiskDataTest.php
@@ -0,0 +1,55 @@
+<?php
+
+/** @noinspection PhpUnhandledExceptionInspection */
+/** @noinspection PhpDocMissingThrowsInspection */
+/**
+ * This class defines unit tests to verify functionality of the embedded riskData resource.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+
+namespace UnzerSDK\test\unit\Resources\EmbeddedResources;
+
+use UnzerSDK\Resources\EmbeddedResources\RiskData;
+use UnzerSDK\test\BasePaymentTest;
+
+class RiskDataTest extends BasePaymentTest
+{
+    /**
+     * Verify setter and getter functionalities.
+     *
+     * @test
+     *
+     */
+    public function settersAndGettersShouldWork(): void
+    {
+        $riskData = new RiskData();
+        $this->assertNull($riskData->getRegistrationDate());
+        $this->assertNull($riskData->getRegistrationLevel());
+        $this->assertNull($riskData->getThreatMetrixId());
+        $this->assertNull($riskData->getConfirmedAmount());
+        $this->assertNull($riskData->getConfirmedAmount());
+        $this->assertNull($riskData->getCustomerGroup());
+        $this->assertNull($riskData->getCustomerId());
+
+        $resp = [
+            "threatMetrixId" => "f544if49wo4f74ef1x",
+            "customerGroup" => "TOP",
+            "customerId" => "C-122345",
+            "confirmedAmount" => "2569",
+            "confirmedOrders" => "14",
+            "registrationLevel" => "1",
+            "registrationDate" => "20160412"
+        ];
+        $riskData->handleResponse((object)$resp);
+
+        $this->assertEquals('f544if49wo4f74ef1x', $riskData->getThreatMetrixId());
+        $this->assertEquals('TOP', $riskData->getCustomerGroup());
+        $this->assertEquals('C-122345', $riskData->getCustomerId());
+        $this->assertEquals(2569, $riskData->getConfirmedAmount());
+        $this->assertEquals(14, $riskData->getConfirmedOrders());
+        $this->assertEquals('1', $riskData->getRegistrationLevel());
+        $this->assertEquals('20160412', $riskData->getRegistrationDate());
+    }
+}
diff --git a/vendor/unzerdev/php-sdk/test/unit/Resources/EmbeddedResources/ShippingDataTest.php b/vendor/unzerdev/php-sdk/test/unit/Resources/EmbeddedResources/ShippingDataTest.php
new file mode 100644
index 0000000..ff05b58
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/test/unit/Resources/EmbeddedResources/ShippingDataTest.php
@@ -0,0 +1,43 @@
+<?php
+
+/** @noinspection PhpUnhandledExceptionInspection */
+/** @noinspection PhpDocMissingThrowsInspection */
+/**
+ * This class defines unit tests to verify functionality of the embedded shipping resource.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+
+namespace UnzerSDK\test\unit\Resources\EmbeddedResources;
+
+use UnzerSDK\Resources\EmbeddedResources\ShippingData;
+use UnzerSDK\test\BasePaymentTest;
+
+class ShippingDataTest extends BasePaymentTest
+{
+    /**
+     * Verify setter and getter functionalities.
+     *
+     * @test
+     *
+     */
+    public function settersAndGettersShouldWork(): void
+    {
+        $shipping = new ShippingData();
+        $this->assertNull($shipping->getDeliveryService());
+        $this->assertNull($shipping->getDeliveryTrackingId());
+        $this->assertNull($shipping->getReturnTrackingId());
+
+        $resp = [
+            "deliveryTrackingId" => "deliveryTrackingId",
+            "deliveryService" => "deliveryService",
+            "returnTrackingId" => "returnTrackingId",
+        ];
+        $shipping->handleResponse((object)$resp);
+
+        $this->assertEquals('deliveryTrackingId', $shipping->getDeliveryTrackingId());
+        $this->assertEquals('deliveryService', $shipping->getDeliveryService());
+        $this->assertEquals('returnTrackingId', $shipping->getReturnTrackingId());
+    }
+}
diff --git a/vendor/unzerdev/php-sdk/test/unit/Resources/InstalmentPlanTest.php b/vendor/unzerdev/php-sdk/test/unit/Resources/InstalmentPlanTest.php
index 6555dde..a795539 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Resources/InstalmentPlanTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Resources/InstalmentPlanTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class verifies function of the instalment plan resources.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Resources;
 
 use DateTime;
@@ -37,6 +22,7 @@ class InstalmentPlanTest extends BasePaymentTest
      * Verify the functionalities of the instalment plan resources.
      *
      * @test
+     *
      * @dataProvider verifyQueryStringDP
      *
      * @param float  $amount
diff --git a/vendor/unzerdev/php-sdk/test/unit/Resources/KeypairTest.php b/vendor/unzerdev/php-sdk/test/unit/Resources/KeypairTest.php
index 8161c42..0abba06 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Resources/KeypairTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Resources/KeypairTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of the Keypair resource.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Resources;
 
 use UnzerSDK\Resources\Keypair;
diff --git a/vendor/unzerdev/php-sdk/test/unit/Resources/MetadataTest.php b/vendor/unzerdev/php-sdk/test/unit/Resources/MetadataTest.php
index f960373..eae3c23 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Resources/MetadataTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Resources/MetadataTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify metadata functionalities.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Resources;
 
 use UnzerSDK\Resources\Metadata;
diff --git a/vendor/unzerdev/php-sdk/test/unit/Resources/PaylaterInstallmentPlansTest.php b/vendor/unzerdev/php-sdk/test/unit/Resources/PaylaterInstallmentPlansTest.php
new file mode 100644
index 0000000..607189c
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/test/unit/Resources/PaylaterInstallmentPlansTest.php
@@ -0,0 +1,148 @@
+<?php
+
+/** @noinspection PhpUnhandledExceptionInspection */
+/** @noinspection PhpDocMissingThrowsInspection */
+/**
+ * This class verifies function of the paylater installment plan resources.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+
+namespace UnzerSDK\test\unit\Resources;
+
+use UnzerSDK\Constants\CustomerTypes;
+use UnzerSDK\Resources\EmbeddedResources\Paylater\InstallmentPlansQuery;
+use UnzerSDK\Resources\EmbeddedResources\Paylater\InstallmentRate;
+use UnzerSDK\Resources\EmbeddedResources\Paylater\InstallmentPlan;
+use UnzerSDK\Resources\PaylaterInstallmentPlans;
+use UnzerSDK\test\BasePaymentTest;
+use UnzerSDK\test\Fixtures\JsonProvider;
+
+class PaylaterInstallmentPlansTest extends BasePaymentTest
+{
+    /**
+     * Verify getters and setters.
+     *
+     * @test
+     */
+    public function gettersAndSettersShouldWorkAsExpected(): void
+    {
+        // when
+        $PaylaterInstallmentPlans = new PaylaterInstallmentPlans();
+
+        // then
+        $this->assertNull($PaylaterInstallmentPlans->getAmount());
+        $this->assertNull($PaylaterInstallmentPlans->getCurrency());
+        $this->assertNull($PaylaterInstallmentPlans->getCountry());
+        $this->assertNull($PaylaterInstallmentPlans->getCustomerType());
+
+        // when
+        $PaylaterInstallmentPlans->setAmount(2.345)
+            ->setCurrency('USD')
+            ->setCountry('DE')
+            ->setCustomerType(CustomerTypes::B2C);
+
+        // then
+        $this->assertEquals(2.345, $PaylaterInstallmentPlans->getAmount());
+        $this->assertEquals('USD', $PaylaterInstallmentPlans->getCurrency());
+        $this->assertEquals('DE', $PaylaterInstallmentPlans->getCountry());
+        $this->assertEquals(CustomerTypes::B2C, $PaylaterInstallmentPlans->getCustomerType());
+    }
+
+    /**
+     * Verify the functionalities of the instalment plan resources.
+     *
+     * @test
+     *
+     * @dataProvider verifyQueryStringDP
+     *
+     * @param float  $amount
+     * @param string $currency
+     * @param string $country
+     * @param string $customerType
+     */
+    public function verifyQueryString(float $amount, string $currency, string $country, string $customerType): void
+    {
+        $plansQuery = new InstallmentPlansQuery($amount, $currency, $country, $customerType);
+        $plans = (new PaylaterInstallmentPlans())->setQueryParameter($plansQuery);
+        $this->assertEquals("plans?amount={$amount}&country={$country}&currency={$currency}&customerType={$customerType}", $plans->getResourcePath());
+    }
+
+    /**
+     * Verify that Jsonresponse gets handled properly
+     *
+     * @test
+     */
+    public function verifyJsonResponseIsHandledProperly(): void
+    {
+        // when
+        $paylaterInstallmentPlans = new PaylaterInstallmentPlans();
+        $jsonResponse = json_decode(JsonProvider::getJsonFromFile('paylaterPlansResponse.json'));
+        $paylaterInstallmentPlans->handleResponse($jsonResponse);
+
+        $this->assertCount(count($jsonResponse->plans), $paylaterInstallmentPlans->getPlans());
+
+        // then
+        $this->assertEquals($jsonResponse->id ?? null, $paylaterInstallmentPlans->getId());
+        $this->assertEquals($jsonResponse->amount ?? null, $paylaterInstallmentPlans->getAmount());
+        $this->assertEquals($jsonResponse->currency ?? null, $paylaterInstallmentPlans->getCurrency());
+        $this->assertEquals($jsonResponse->isError ?? null, $paylaterInstallmentPlans->isError());
+        $this->assertEquals($jsonResponse->isSuccess ?? null, $paylaterInstallmentPlans->isSuccess());
+        $this->assertEquals($jsonResponse->isPending ?? null, $paylaterInstallmentPlans->isPending());
+
+        $this->comparePlans($jsonResponse->plans, $paylaterInstallmentPlans->getPlans());
+    }
+
+    //<editor-fold desc="Data Providers">
+
+    /**
+     * @param object[]          $expected
+     * @param InstallmentPlan[] $actual
+     *
+     * @return void
+     */
+    protected function comparePlans(array $expected, array $actual): void
+    {
+        $this->assertCount(count($expected), $actual);
+
+        foreach ($expected as $index => $plan) {
+            $this->assertEquals($plan->totalAmount ?? null, $actual[$index]->getTotalAmount());
+            $this->assertEquals($plan->nominalInterestRate ?? null, $actual[$index]->getNominalInterestRate());
+            $this->assertEquals($plan->effectiveInterestRate ?? null, $actual[$index]->getEffectiveInterestRate());
+            $this->compareRates($plan->installmentRates ?? null, $actual[$index]->getInstallmentRates());
+            $this->assertEquals($plan->secciUrl ?? null, $actual[$index]->getSecciUrl());
+        }
+    }
+
+    //</editor-fold>
+
+    //<editor-fold desc="Helper">
+
+    /**
+     * @param object[]          $expected
+     * @param InstallmentRate[] $actual
+     *
+     * @return void
+     */
+    protected function compareRates(array $expected, array $actual): void
+    {
+        foreach ($expected as $index => $rate) {
+            $this->assertEquals($rate->date, $actual[$index]->getDate());
+            $this->assertEquals($rate->rate, $actual[$index]->getRate());
+        }
+    }
+
+    /**
+     * @return array
+     */
+    public function verifyQueryStringDP(): array
+    {
+        return [
+            [100, 'EUR', 'DE', 'B2C'],
+            [100, 'EUR', 'GB', 'B2B'],
+            [100, 'CHF', 'CHE', 'B2C'],
+        ];
+    }
+    //</editor-fold>
+}
diff --git a/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTest.php b/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTest.php
index d0cb10a..5197acb 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTest.php
@@ -1,51 +1,39 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of the Payment resource.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Resources;
 
+use PHPUnit\Framework\MockObject\MockObject;
+use RuntimeException;
+use stdClass;
 use UnzerSDK\Constants\PaymentState;
-use UnzerSDK\Unzer;
 use UnzerSDK\Resources\Basket;
 use UnzerSDK\Resources\Customer;
 use UnzerSDK\Resources\CustomerFactory;
 use UnzerSDK\Resources\EmbeddedResources\Amount;
 use UnzerSDK\Resources\Metadata;
 use UnzerSDK\Resources\Payment;
+use UnzerSDK\Resources\PaymentTypes\Paypage;
 use UnzerSDK\Resources\PaymentTypes\Sofort;
 use UnzerSDK\Resources\TransactionTypes\AbstractTransactionType;
 use UnzerSDK\Resources\TransactionTypes\Authorization;
 use UnzerSDK\Resources\TransactionTypes\Cancellation;
 use UnzerSDK\Resources\TransactionTypes\Charge;
+use UnzerSDK\Resources\TransactionTypes\Chargeback;
 use UnzerSDK\Resources\TransactionTypes\Payout;
 use UnzerSDK\Resources\TransactionTypes\Shipment;
 use UnzerSDK\Services\ResourceService;
 use UnzerSDK\test\BasePaymentTest;
-use PHPUnit\Framework\MockObject\MockObject;
-use RuntimeException;
-use stdClass;
+use UnzerSDK\test\Fixtures\JsonProvider;
+use UnzerSDK\Unzer;
 
 class PaymentTest extends BasePaymentTest
 {
@@ -63,6 +51,9 @@ public function gettersAndSettersShouldWorkProperly(): void
         /** @noinspection UnnecessaryAssertionInspection */
         $this->assertInstanceOf(Amount::class, $payment->getAmount());
         $this->assertNull($payment->getTraceId());
+        $this->assertNull($payment->getAuthorization());
+        $this->assertIsEmptyArray($payment->getReversals());
+        $this->assertIsEmptyArray($payment->getRefunds());
 
         // update
         $ids = (object)['traceId' => 'myTraceId'];
@@ -79,6 +70,81 @@ public function gettersAndSettersShouldWorkProperly(): void
         $this->assertSame('myTraceId', $payment->getTraceId());
     }
 
+    /**
+     * Verify that direct payment cancellations are handled correctly.
+     *
+     * @test
+     */
+    public function PaymentCancellationsShouldBeHandledAsExpected()
+    {
+        $payment = (new Payment())->setParentResource(new Unzer('s-priv-1234'));
+
+        $this->assertIsEmptyArray($payment->getReversals());
+        $this->assertIsEmptyArray($payment->getRefunds());
+
+        $transactions = [
+            (object)[
+                "date" => "2022-05-13 08:04:29",
+                "type" => "authorize",
+                "status" => "success",
+                "url" => "https://api.unzer.com/v1/payments/s-pay-777/authorize/s-aut-1",
+                "amount" => "99.9900"
+            ],
+            (object)[
+                "date" => "2022-05-13 08:04:30",
+                "type" => "charge",
+                "status" => "success",
+                "url" => "https://api.unzer.com/v1/payments/s-pay-777/charges/s-chg-1",
+                "amount" => "99.9900"
+            ],
+            (object)[
+                "date" => "2022-05-13 08:04:31",
+                "type" => "cancel-authorize",
+                "status" => "success",
+                "url" => "https://api.unzer.com/v1/payments/s-pay-777/authorize/cancels/s-cnl-1",
+                "amount" => "22.2200"
+            ],
+            (object)[
+                "date" => "2022-05-13 08:04:31",
+                "type" => "cancel-charge",
+                "status" => "success",
+                "url" => "https://api.unzer.com/v1/payments/s-pay-777/charges/cancels/s-cnl-1",
+                "amount" => "22.2200"
+            ]
+        ];
+
+        $payment->handleResponse((object)['transactions' => $transactions]);
+
+        $this->assertCount(1, $payment->getReversals());
+        $this->assertCount(1, $payment->getRefunds());
+        $this->assertCount(2, $payment->getCancellations());
+    }
+
+    /**
+     * Verify that adding refunds/reversals to the payment happens as expected
+     *
+     * @test
+     */
+    public function verifyAddingCancelationsWorksProperly()
+    {
+        $payment = (new Payment())->setParentResource(new Unzer('s-priv-1234'));
+        $this->assertIsEmptyArray($payment->getReversals());
+        $this->assertIsEmptyArray($payment->getRefunds());
+        $reversal1 = (new Cancellation())->setId('s-cnl-1')->setAmount(99.99);
+        $reversal2 = (new Cancellation())->setId('s-cnl-2')->setAmount(99.99);
+        $reversal3 = (new Cancellation())->setId('s-cnl-2')->setAmount(33.33);
+
+        $payment->addReversal($reversal1);
+        $payment->addReversal($reversal2);
+        $this->assertCount(2, $payment->getReversals());
+
+        // update existing transaction.
+        $payment->addReversal($reversal3);
+        $this->assertCount(2, $payment->getReversals());
+
+        $this->assertEquals(33.33, $payment->getReversals()['s-cnl-2']->getAmount());
+    }
+
     /**
      * @test
      *
@@ -468,6 +534,8 @@ public function getCancellationsShouldCollectAllCancellationsOfCorrespondingTran
     /**
      * Verify getCancellation calls getCancellations and returns null if cancellation does not exist.
      *
+     * @deprecated To be removed with Payment::getCancellation()
+     *
      * @test
      */
     public function getCancellationShouldCallGetCancellationsAndReturnNullIfNoCancellationExists(): void
@@ -482,6 +550,8 @@ public function getCancellationShouldCallGetCancellationsAndReturnNullIfNoCancel
     /**
      * Verify getCancellation returns cancellation if it exists.
      *
+     * @deprecated To be removed with Payment::getCancellation()
+     *
      * @test
      */
     public function getCancellationShouldReturnCancellationIfItExists(): void
@@ -501,6 +571,8 @@ public function getCancellationShouldReturnCancellationIfItExists(): void
     /**
      * Verify getCancellation fetches cancellation if it exists and lazy loading is false.
      *
+     * @deprecated To be removed with Payment::getCancellation()
+     *
      * @test
      */
     public function getCancellationShouldReturnCancellationIfItExistsAndFetchItIfNotLazy(): void
@@ -595,12 +667,60 @@ public function getAndSetCurrencyShouldPropagateToTheAmountObject(): void
         $this->assertEquals('MyTestGetCurrency', $payment->getCurrency());
     }
 
+    /**
+     * Verify that a payment that contains a cancel-authorize transaction can be fetched, even though no authorize
+     * transaction exists. Can occur when canceling via Insights.
+     *
+     * @test
+     */
+    public function cancelAuthorizeOnInvoiceShouldBeHandledCorrectly(): void
+    {
+        $resourceServiceMock = $this->getMockBuilder(ResourceService::class)
+            ->disableOriginalConstructor()->setMethods(['getResource'])->getMock();
+        /** @noinspection PhpParamsInspection */
+
+        /** @var ResourceService $resourceServiceMock */
+        $unzerObj = (new Unzer('s-priv-123'))->setResourceService($resourceServiceMock);
+        $payment = new Payment();
+        $payment->setParentResource($unzerObj);
+
+        $response = (object)[
+            "id" => "s-pay-666",
+            "state" => (object)["id" => 1, "name" => "completed"],
+            "currency" => "EUR",
+            "transactions" => [
+                (object)["date" => "2021-11-17 11:47:07",
+                    "type" => "charge",
+                    "status" => "pending",
+                    "url" => "https://api.unzer.com/v1/payments/s-pay-666/charges/s-chg-1", "amount" => "14.9900"
+                ],
+                (object)[
+                    "date" => "2021-11-17 11:48:52",
+                    "type" => "shipment", "status" => "success",
+                    "url" => "https://api.unzer.com/v1/payments/s-pay-666/shipments/s-shp-1",
+                    "amount" => "14.9900"],
+                (object)["date" => "2021-11-17 11:48:52",
+                    "type" => "cancel-authorize",
+                    "status" => "success",
+                    "url" => "https://api.unzer.com/v1/payments/s-pay-666/charges/s-chg-1/cancels/s-cnl-1",
+                    "amount" => "10.0000"]
+            ]
+        ];
+        $payment->handleResponse($response);
+        $this->assertNull($payment->getAuthorization());
+        /** @var Charge $initialCharge */
+        $initialCharge = $payment->getCharges()[0];
+
+        $this->assertCount(1, $initialCharge->getCancellations());
+    }
+
     //<editor-fold desc="Handle Response Tests">
 
     /**
      * Verify handleResponse will update stateId.
      *
      * @test
+     *
      * @dataProvider stateDataProvider
      *
      * @param integer $state
@@ -686,6 +806,32 @@ public function handleResponseShouldFetchAndUpdateCustomerIfItIsAlreadySet(): vo
         $payment->handleResponse($response);
     }
 
+    /**
+     * Verify handleResponse updates payPage if it set.
+     *
+     * @test
+     */
+    public function handleResponseShouldFetchAndUpdatePayPageIfItIsAlreadySet(): void
+    {
+        $payment = (new Payment())->setId('myPaymentId');
+        $payPage = (new Paypage(0, '', ''))->setId('payPageId');
+
+        $resourceServiceMock = $this->getMockBuilder(ResourceService::class)
+            ->disableOriginalConstructor()->setMethods(['fetchResource'])->getMock();
+        /** @noinspection PhpParamsInspection */
+        $resourceServiceMock->expects($this->never())->method('fetchResource')->with($payPage);
+
+        /** @var ResourceService $resourceServiceMock */
+        $unzerObj = (new Unzer('s-priv-123'))->setResourceService($resourceServiceMock);
+        $payment->setParentResource($unzerObj);
+        $payment->setpayPage($payPage);
+
+        $response = new stdClass();
+        $response->resources = new stdClass();
+        $response->resources->payPageId = 'payPageId';
+        $payment->handleResponse($response);
+    }
+
     /**
      * Verify handleResponse updates paymentType.
      *
@@ -758,6 +904,7 @@ public function handleResponseShouldGetMetadataIfUnfetchedMetadataObjectWithIdIs
      */
     public function handleResponseShouldUpdateChargeTransactions(): void
     {
+        /** @var Payment $payment */
         $payment = (new Payment())->setId('MyPaymentId');
         $this->assertIsEmptyArray($payment->getCharges());
         $this->assertIsEmptyArray($payment->getShipments());
@@ -771,6 +918,8 @@ public function handleResponseShouldUpdateChargeTransactions(): void
         $this->assertIsEmptyArray($payment->getCharges());
         $this->assertIsEmptyArray($payment->getShipments());
         $this->assertIsEmptyArray($payment->getCancellations());
+        $this->assertIsEmptyArray($payment->getChargebacks());
+        $this->assertNull($payment->getPayout());
         $this->assertNull($payment->getAuthorization());
     }
 
@@ -803,6 +952,90 @@ public function handleResponseShouldUpdateAuthorizationFromResponse(): void
         $this->assertEquals(10.321, $authorization->getAmount());
     }
 
+    /**
+     * Verify handleResponse updates existing chargebacks from response.
+     *
+     * @test
+     */
+    public function handleResponseShouldUpdateChargebackFromResponse(): void
+    {
+        $resourceServiceMock = $this->getMockBuilder(ResourceService::class)
+            ->disableOriginalConstructor()->onlyMethods(['getResource'])->getMock();
+
+        $unzer = (new Unzer('s-priv-123'))->setResourceService($resourceServiceMock);
+        $payment = (new Payment())
+            ->setParentResource($unzer)
+            ->setId('MyPaymentId');
+
+        $paymentJson = JsonProvider::getJsonFromFile('paymentWithMultipleChargebacks.json');
+        $response = new stdClass();
+
+        $payment->handleResponse(json_decode($paymentJson));
+
+        $chargebacks = $payment->getChargebacks(true);
+        $charges = $payment->getCharges();
+        $this->assertCount(2, $charges);
+        $this->assertCount(2, $chargebacks);
+
+        $chargeback1 = $chargebacks[0];
+        $this->assertInstanceOf(Chargeback::class, $chargeback1);
+        $this->assertInstanceOf(Charge::class, $chargeback1->getParentResource());
+        $this->assertEquals(0.5, $chargeback1->getAmount());
+
+        $chargeback2 = $chargebacks[1];
+        $this->assertInstanceOf(Chargeback::class, $chargeback2);
+        $this->assertInstanceOf(Charge::class, $chargeback2->getParentResource());
+        $this->assertEquals(0.5, $chargeback2->getAmount());
+
+        // Charges contain chargeback reference.
+        $charge1 = $charges[0];
+        $this->assertCount(1, $charge1->getChargebacks());
+
+        $charge2 = $charges[1];
+        $this->assertCount(1, $charge1->getChargebacks());
+    }
+
+    /**
+     * Verify handleResponse updates existing chargebacks from response.
+     *
+     * @test
+     */
+    public function chargebackOnPaymentShouldBeHandledProperly(): void
+    {
+        $resourceServiceMock = $this->getMockBuilder(ResourceService::class)
+            ->disableOriginalConstructor()->onlyMethods(['getResource', 'fetchResource'])->getMock();
+
+        $unzer = (new Unzer('s-priv-123'))->setResourceService($resourceServiceMock);
+        $payment = (new Payment())
+            ->setParentResource($unzer)
+            ->setId('MyPaymentId');
+
+        $paymentResponse = JsonProvider::getJsonFromFile('paymentWithDirectChargeback.json');
+        $payment->handleResponse(json_decode($paymentResponse, false));
+
+        $chargebacks = $payment->getChargebacks(true);
+        $charges = $payment->getCharges();
+        $this->assertCount(2, $charges);
+        $this->assertCount(2, $chargebacks);
+
+        $chargeback1 = $chargebacks[0];
+        $this->assertInstanceOf(Chargeback::class, $chargeback1);
+        $this->assertInstanceOf(Payment::class, $chargeback1->getParentResource());
+        $this->assertEquals(0.5, $chargeback1->getAmount());
+
+        $chargeback2 = $chargebacks[1];
+        $this->assertInstanceOf(Chargeback::class, $chargeback2);
+        $this->assertInstanceOf(Payment::class, $chargeback2->getParentResource());
+        $this->assertEquals(0.5, $chargeback2->getAmount());
+
+        // Charges contain chargeback reference.
+        $charge1 = $charges[0];
+        $this->assertCount(0, $charge1->getChargebacks());
+
+        $charge2 = $charges[1];
+        $this->assertCount(0, $charge2->getChargebacks());
+    }
+
     /**
      * Verify handleResponse adds authorization from response.
      *
@@ -976,7 +1209,7 @@ public function handleResponseShouldThrowExceptionIfAnAuthorizeToAReversalDoesNo
         $response->transactions = [$cancellation];
 
         $this->expectException(RuntimeException::class);
-        $this->expectExceptionMessage('The Authorization object can not be found.');
+        $this->expectExceptionMessage('The initial transaction object (Authorize or Charge) can not be found.');
         $payment->handleResponse($response);
     }
 
@@ -1193,13 +1426,13 @@ public function chargeMethodShouldPropagateToUnzerChargePaymentMethod(): void
             ->withConsecutive(
                 [$payment, null, null],
                 [$payment, 1.1, null],
-                [$payment, 2.2, 'MyCurrency']
+                [$payment, 2.2]
             )->willReturn(new Charge());
         $payment->setParentResource($unzerMock);
 
         $payment->charge();
         $payment->charge(1.1);
-        $payment->charge(2.2, 'MyCurrency');
+        $payment->charge(2.2);
     }
 
     /**
@@ -1271,7 +1504,7 @@ public function metadataMustBeOfTypeMetadata(): void
 
         // when
         /** @noinspection PhpParamsInspection */
-        $payment->setMetadata('test');
+        $payment->setMetadata(null);
 
         // then
         $this->assertNull($payment->getMetadata());
@@ -1303,7 +1536,8 @@ public function setBasketShouldCallCreateIfTheGivenBasketObjectDoesNotExistYet()
                 static function ($object) use ($basket, $unzer) {
                     /** @var Basket $object */
                     return $object === $basket && $object->getParentResource() === $unzer;
-                })
+                }
+            )
         );
 
         $payment = new Payment($unzer);
@@ -1376,6 +1610,7 @@ public function paymentShouldBeFetchedByOrderIdIfIdIsNotSet(): void
      * Autofetch is disabled due to missing transactionIds.
      *
      * @test
+     *
      * @dataProvider initialTransactionDP
      *
      * @param AbstractTransactionType $expected
diff --git a/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/ApplePayTest.php b/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/ApplePayTest.php
index 0b6374d..7d33e68 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/ApplePayTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/ApplePayTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of Applepay payment type.
  *
- * Copyright (C) 2021 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  David Owusu <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Resources\PaymentTypes;
 
 use UnzerSDK\Resources\EmbeddedResources\ApplePayHeader;
diff --git a/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/BancontactTest.php b/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/BancontactTest.php
index a4478c9..c518890 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/BancontactTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/BancontactTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of Bancontact payment type.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  David Owusu <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Resources\PaymentTypes;
 
 use UnzerSDK\Resources\PaymentTypes\Bancontact;
diff --git a/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/CardTest.php b/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/CardTest.php
index 7888c9f..d956d0a 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/CardTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/CardTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of Card payment type.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Resources\PaymentTypes;
 
 use UnzerSDK\Resources\EmbeddedResources\CardDetails;
@@ -135,6 +120,7 @@ public function constructorShouldSetEmail()
      * Verify expiryDate year is extended if it is the short version.
      *
      * @test
+     *
      * @dataProvider expiryDateDataProvider
      *
      * @param string $testData
@@ -150,6 +136,7 @@ public function expiryDateShouldBeExtendedToLongVersion($testData, $expected): v
      * Verify invalid expiryDate throws Exception.
      *
      * @test
+     *
      * @dataProvider invalidExpiryDateDataProvider
      *
      * @param string $testData
@@ -276,7 +263,7 @@ public function verifyCardCanBeUpdated(): void
         $this->assertEquals('client ip', $geoLocation->getClientIp());
         $this->assertEquals('country code', $geoLocation->getCountryCode());
 
-        $cardDetails = new stdClass;
+        $cardDetails = new stdClass();
         $cardDetails->cardType = 'my card type';
         $cardDetails->account = 'CREDIT';
         $cardDetails->countryIsoA2 = 'DE';
diff --git a/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/EPSTest.php b/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/EPSTest.php
index 99b62f4..19c84ad 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/EPSTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/EPSTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of EPS payment type.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Resources\PaymentTypes;
 
 use UnzerSDK\Resources\PaymentTypes\EPS;
diff --git a/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/GooglePayTest.php b/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/GooglePayTest.php
new file mode 100644
index 0000000..80559db
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/GooglePayTest.php
@@ -0,0 +1,90 @@
+<?php
+
+/** @noinspection PhpUnhandledExceptionInspection */
+/** @noinspection PhpDocMissingThrowsInspection */
+
+namespace UnzerSDK\test\unit\Resources\PaymentTypes;
+
+use UnzerSDK\Resources\EmbeddedResources\GooglePay\IntermediateSigningKey;
+use UnzerSDK\Resources\EmbeddedResources\GooglePay\SignedKey;
+use UnzerSDK\Resources\EmbeddedResources\GooglePay\SignedMessage;
+use UnzerSDK\Resources\PaymentTypes\Googlepay;
+use UnzerSDK\test\BasePaymentTest;
+use UnzerSDK\test\Fixtures\JsonProvider;
+
+/**
+ * This class defines unit tests to verify functionality of Googlepay payment type.
+ */
+class GooglePayTest extends BasePaymentTest
+{
+    /**
+     * Verify the resource data is set properly.
+     *
+     * @test
+     */
+    public function constructorShouldSetParameters(): void
+    {
+        $protocolVersion = 'EC_v2';
+        $signature = 'mySignature';
+        $intermediaSigningKey = new IntermediateSigningKey();
+        $signedMessage = new SignedMessage('tag', 'eph', 'encryptedMessage');
+        $googlepay = new Googlepay($protocolVersion, $signature, $intermediaSigningKey, $signedMessage);
+
+        $this->assertEquals($protocolVersion, $googlepay->getProtocolVersion());
+        $this->assertEquals($signature, $googlepay->getSignature());
+        $this->assertEquals($intermediaSigningKey, $googlepay->getIntermediateSigningKey());
+        $this->assertEquals($signedMessage, $googlepay->getSignedMessage());
+    }
+
+    /**
+     * Test Google Pay json serialization.
+     *
+     * @test
+     */
+    public function jsonSerializationExposesOnlyRequestParameter(): void
+    {
+        $googlepay = $this->getTestGooglepay();
+
+        $expectedJson = JsonProvider::getJsonFromFile('googlePay/createRequest.json');
+        $this->assertJsonStringEqualsJsonString($expectedJson, $googlepay->jsonSerialize());
+    }
+
+    /**
+     * @return Googlepay
+     */
+    private function getTestGooglepay(): Googlepay
+    {
+        $intermediateSigningKey = (new IntermediateSigningKey())
+            ->setSignatures(['signature1'])
+            ->setSignedKey(new SignedKey('1542394027316', 'key-value-xyz\\u003d\\u003d"}'));
+        return new Googlepay(
+            'ECv2',
+            'signature-xyz=',
+            $intermediateSigningKey,
+            new SignedMessage(
+                '001 Cryptogram 3ds',
+                'ephemeralPublicKey-xyz\\u003d"',
+                'encryptedMessage-xyz"'
+            )
+        );
+    }
+
+    /**
+     * Test GooglePay json response handling.
+     *
+     * @test
+     */
+    public function googlepayAuthorizationShouldBeMappedCorrectly(): void
+    {
+        $googlepay = new Googlepay(null, null, null, null);
+
+        $jsonResponse = JsonProvider::getJsonFromFile('googlePay/fetchResponse.json');
+
+        $jsonObject = json_decode($jsonResponse, false, 512, JSON_THROW_ON_ERROR);
+        $googlepay->handleResponse($jsonObject);
+
+        $this->assertEquals('s-gop-q0nucec6itwe', $googlepay->getId());
+        $this->assertEquals('10/2025', $googlepay->getExpiryDate());
+        $this->assertEquals('518834******0003', $googlepay->getNumber());
+    }
+}
diff --git a/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/IdealTest.php b/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/IdealTest.php
index f4d7416..6113d61 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/IdealTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/IdealTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of Ideal payment type.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Resources\PaymentTypes;
 
 use UnzerSDK\Resources\PaymentTypes\Ideal;
diff --git a/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/InstallmentSecuredTest.php b/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/InstallmentSecuredTest.php
index 822daf1..bf5741c 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/InstallmentSecuredTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/InstallmentSecuredTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of Installment Secured payment type.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Resources\PaymentTypes;
 
 use DateInterval;
diff --git a/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/PayPageTest.php b/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/PayPageTest.php
index c0aabb8..10083bc 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/PayPageTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/PayPageTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of the PayPage feature.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Resources\PaymentTypes;
 
 use UnzerSDK\Adapter\HttpAdapterInterface;
@@ -205,7 +190,7 @@ public function responseHandlingShouldWorkProperly(): void
         $response->imprintUrl = 'imprint url';
         $response->privacyPolicyUrl = 'privacy policy url';
         $response->termsAndConditionUrl = 'tac url';
-        $response->css = ['my'=> 'styles'];
+        $response->css = ['my' => 'styles'];
         $paypage->handleResponse($response);
 
         // then
diff --git a/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/PayPalTest.php b/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/PayPalTest.php
index b5f445a..2832416 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/PayPalTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/PayPalTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of PayPal payment type.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Resources\PaymentTypes;
 
 use UnzerSDK\Resources\PaymentTypes\Paypal;
diff --git a/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/PaylaterDirectDebitTest.php b/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/PaylaterDirectDebitTest.php
new file mode 100644
index 0000000..920163e
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/PaylaterDirectDebitTest.php
@@ -0,0 +1,39 @@
+<?php
+
+namespace UnzerSDK\test\unit\Resources\PaymentTypes;
+
+use UnzerSDK\Resources\PaymentTypes\PaylaterDirectDebit;
+use UnzerSDK\test\BasePaymentTest;
+
+class PaylaterDirectDebitTest extends BasePaymentTest
+{
+    /**
+     * Verify constructor sets iban properties.
+     *
+     * @test
+     */
+    public function constructorShouldSetProperties(): void
+    {
+        $pdd = new PaylaterDirectDebit('iban', 'holder');
+        $this->assertEquals('iban', $pdd->getIban());
+        $this->assertEquals('holder', $pdd->getHolder());
+    }
+
+    /**
+     * Verify setter and getter work.
+     *
+     * @test
+     */
+    public function getterAndSetterWorkAsExpected(): void
+    {
+        $pdd = new PaylaterDirectDebit();
+
+        $this->assertNull($pdd->getIban());
+        $pdd->setIban('DE89370400440532013000');
+        $this->assertEquals('DE89370400440532013000', $pdd->getIban());
+
+        $this->assertNull($pdd->getHolder());
+        $pdd->setHolder('Max Mustermann');
+        $this->assertEquals('Max Mustermann', $pdd->getHolder());
+    }
+}
diff --git a/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/PaylaterInstallmentTest.php b/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/PaylaterInstallmentTest.php
new file mode 100644
index 0000000..d993553
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/PaylaterInstallmentTest.php
@@ -0,0 +1,57 @@
+<?php
+
+/** @noinspection PhpUnhandledExceptionInspection */
+/** @noinspection PhpDocMissingThrowsInspection */
+/**
+ * This class defines unit tests to verify functionality of Paylater Installment payment type.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+
+namespace UnzerSDK\test\unit\Resources\PaymentTypes;
+
+use UnzerSDK\Resources\PaymentTypes\PaylaterInstallment;
+use UnzerSDK\test\BasePaymentTest;
+
+class PaylaterInstallmentTest extends BasePaymentTest
+{
+    /**
+     * Verify getters and setters work as expected.
+     *
+     * @test
+     */
+    public function gettersAndSettersShouldWorkAsExpected(): void
+    {
+        $pit = new PaylaterInstallment();
+        $this->assertNull($pit->getInquiryId());
+        $this->assertNull($pit->getNumberOfRates());
+        $this->assertNull($pit->getIban());
+        $this->assertNull($pit->getCountry());
+        $this->assertNull($pit->getHolder());
+
+        $pit->setInquiryId('inquiryId');
+        $pit->setNumberOfRates(7);
+        $pit->setIban('DE89370400440532013000');
+        $pit->setCountry('DE');
+        $pit->setHolder('Max Mustermann');
+
+        $this->assertEquals('inquiryId', $pit->getInquiryId());
+        $this->assertEquals(7, $pit->getNumberOfRates());
+        $this->assertEquals('DE89370400440532013000', $pit->getIban());
+        $this->assertEquals('DE', $pit->getCountry());
+        $this->assertEquals('Max Mustermann', $pit->getHolder());
+
+        $pit->setInquiryId(null);
+        $pit->setNumberOfRates(null);
+        $pit->setIban(null);
+        $pit->setCountry(null);
+        $pit->setHolder(null);
+
+        $this->assertNull($pit->getInquiryId());
+        $this->assertNull($pit->getNumberOfRates());
+        $this->assertNull($pit->getIban());
+        $this->assertNull($pit->getCountry());
+        $this->assertNull($pit->getHolder());
+    }
+}
diff --git a/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/SepaDirectDebitSecuredTest.php b/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/SepaDirectDebitSecuredTest.php
index e315907..3d195fd 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/SepaDirectDebitSecuredTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/SepaDirectDebitSecuredTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of SepaDirectDebitSecured payment type.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Resources\PaymentTypes;
 
 use UnzerSDK\Resources\PaymentTypes\SepaDirectDebitSecured;
diff --git a/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/SepaDirectDebitTest.php b/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/SepaDirectDebitTest.php
index ca74ede..50c3167 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/SepaDirectDebitTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/SepaDirectDebitTest.php
@@ -1,29 +1,8 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
-/**
- * This class defines unit tests to verify functionality of SepaDirectDebit payment type.
- *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @link  https://docs.unzer.com/
- *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
- */
+
 namespace UnzerSDK\test\unit\Resources\PaymentTypes;
 
 use UnzerSDK\Resources\PaymentTypes\SepaDirectDebit;
diff --git a/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/SofortTest.php b/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/SofortTest.php
new file mode 100644
index 0000000..6006bf7
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/test/unit/Resources/PaymentTypes/SofortTest.php
@@ -0,0 +1,33 @@
+<?php
+
+/** @noinspection PhpUnhandledExceptionInspection */
+/** @noinspection PhpDocMissingThrowsInspection */
+
+namespace UnzerSDK\test\unit\Resources\PaymentTypes;
+
+use UnzerSDK\Resources\PaymentTypes\Sofort;
+use UnzerSDK\test\BasePaymentTest;
+use UnzerSDK\test\Fixtures\JsonProvider;
+
+class SofortTest extends BasePaymentTest
+{
+    /**
+     * Verify setter bank account data are mapped on sofort type.
+     *
+     * @test
+     *
+     */
+    public function responseShouldMapBankAccountData(): void
+    {
+        $sofort = new Sofort();
+        $this->assertNull($sofort->getId());
+
+        $jsonResponse = JsonProvider::getJsonFromFile('sofortResponseWithIban.json');
+        $sofort->handleResponse((object)json_decode($jsonResponse, false));
+
+        $this->assertEquals('s-sft-123', $sofort->getId());
+        $this->assertEquals('DE-IBAN', $sofort->getIban());
+        $this->assertEquals('test-bin', $sofort->getBic());
+        $this->assertEquals('holder', $sofort->getHolder());
+    }
+}
diff --git a/vendor/unzerdev/php-sdk/test/unit/Resources/RecurringTest.php b/vendor/unzerdev/php-sdk/test/unit/Resources/RecurringTest.php
index 759e170..ae0c222 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Resources/RecurringTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Resources/RecurringTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of the Recurring resource.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Resources;
 
 use UnzerSDK\Resources\Recurring;
diff --git a/vendor/unzerdev/php-sdk/test/unit/Resources/TransactionTypes/AbstractTransactionTypeTest.php b/vendor/unzerdev/php-sdk/test/unit/Resources/TransactionTypes/AbstractTransactionTypeTest.php
index ba7c6a9..d4821b8 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Resources/TransactionTypes/AbstractTransactionTypeTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Resources/TransactionTypes/AbstractTransactionTypeTest.php
@@ -1,28 +1,12 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of the AbstractTransactionType.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link     https://docs.unzer.com/
  *
- * @author   Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
 
 namespace UnzerSDK\test\unit\Resources\TransactionTypes;
@@ -31,6 +15,8 @@
 use PHPUnit\Framework\MockObject\MockObject;
 use stdClass;
 use UnzerSDK\Adapter\HttpAdapterInterface;
+use UnzerSDK\Constants\LiabilityShiftIndicator;
+use UnzerSDK\Constants\TransactionStatus;
 use UnzerSDK\Resources\Payment;
 use UnzerSDK\Resources\TransactionTypes\AbstractTransactionType;
 use UnzerSDK\Services\ResourceService;
@@ -96,13 +82,66 @@ public function theGettersAndSettersShouldWorkProperly(): void
         $this->assertSame('myUniqueId', $transactionType->getUniqueId());
         $this->assertSame('myTraceId', $transactionType->getTraceId());
         $this->assertNotNull($transactionType->getAdditionalTransactionData());
-        $this->assertObjectHasAttribute('someDataKey', $transactionType->getAdditionalTransactionData());
+        $this->assertTrue(property_exists($transactionType->getAdditionalTransactionData(), 'someDataKey'));
 
         $message = $transactionType->getMessage();
         $this->assertSame('1234', $message->getCode());
         $this->assertSame('Customer message!', $message->getCustomer());
     }
 
+    /**
+     * Set status should set state flags correctly.
+     *
+     * @test
+     */
+    public function setStatusShouldSetStateFlagsCorrectly(): void
+    {
+        $transactionType = new DummyTransactionType();
+
+        // Initial checks.
+        $this->assertFalse($transactionType->isSuccess());
+        $this->assertFalse($transactionType->isPending());
+        $this->assertFalse($transactionType->isError());
+        $this->assertFalse($transactionType->isResumed());
+
+        $responseArray = ['status' => TransactionStatus::STATUS_ERROR];
+        $transactionType->handleResponse((object)$responseArray);
+
+        $this->assertFalse($transactionType->isSuccess());
+        $this->assertFalse($transactionType->isPending());
+        $this->assertTrue($transactionType->isError());
+        $this->assertFalse($transactionType->isResumed());
+
+        $responseArray['status'] = TransactionStatus::STATUS_SUCCESS;
+        $transactionType->handleResponse((object)$responseArray);
+
+        $this->assertTrue($transactionType->isSuccess());
+        $this->assertFalse($transactionType->isPending());
+        $this->assertFalse($transactionType->isError());
+        $this->assertFalse($transactionType->isResumed());
+
+        $responseArray['status'] = TransactionStatus::STATUS_PENDING;
+        $transactionType->handleResponse((object)$responseArray);
+
+        $this->assertFalse($transactionType->isSuccess());
+        $this->assertTrue($transactionType->isPending());
+        $this->assertFalse($transactionType->isError());
+        $this->assertFalse($transactionType->isResumed());
+
+        $responseArray['status'] = TransactionStatus::STATUS_RESUMED;
+        $transactionType->handleResponse((object)$responseArray);
+
+        $this->assertFalse($transactionType->isSuccess());
+        $this->assertFalse($transactionType->isPending());
+        $this->assertFalse($transactionType->isError());
+        $this->assertTrue($transactionType->isResumed());
+
+        $this->expectException(\RuntimeException::class);
+
+        $responseArray['status'] = 'Invalid status.';
+        $transactionType->handleResponse((object)$responseArray);
+    }
+
     /**
      * Verify getters and setters work properly.
      *
@@ -179,6 +218,7 @@ public function handleResponseShouldUpdateValuesOfAbstractTransaction(): void
      * Verify fetchPayment is never called after a Get-Request.
      *
      * @test
+     *
      * @dataProvider updatePaymentDataProvider
      *
      * @param string  $method
@@ -215,6 +255,24 @@ public function fetchPaymentShouldFetchPaymentObject(): void
         $transactionType->fetchPayment();
     }
 
+    /**
+     * Liability indicator response should stored in transaction
+     *
+     * @test
+     */
+    public function liabilityResponseShouldBeStroedInTransaction()
+    {
+        $jsonRespone = '{"additionalTransactionData":{"card":{"liability":"MERCHANT"}}}';
+
+        $transaction = new DummyTransactionType();
+        $transaction->handleResponse(json_decode($jsonRespone, false));
+        $this->assertEquals($transaction->getCardTransactionData()->getLiability(), LiabilityShiftIndicator::MERCHANT);
+
+        $jsonRespone = '{"additionalTransactionData":{"card":{"liability":"ISSUER"}}}';
+        $transaction->handleResponse(json_decode($jsonRespone, false));
+        $this->assertEquals($transaction->getCardTransactionData()->getLiability(), LiabilityShiftIndicator::ISSUER);
+    }
+
     //<editor-fold desc="Data Providers">
 
     /**
diff --git a/vendor/unzerdev/php-sdk/test/unit/Resources/TransactionTypes/AuthorizationTest.php b/vendor/unzerdev/php-sdk/test/unit/Resources/TransactionTypes/AuthorizationTest.php
index bc76d56..89ef823 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Resources/TransactionTypes/AuthorizationTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Resources/TransactionTypes/AuthorizationTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of the Authorization transaction type.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Resources\TransactionTypes;
 
 use UnzerSDK\Unzer;
@@ -35,6 +20,7 @@
 use UnzerSDK\Resources\TransactionTypes\Charge;
 use UnzerSDK\test\BasePaymentTest;
 use RuntimeException;
+
 use function Webmozart\Assert\Tests\StaticAnalysis\object;
 
 class AuthorizationTest extends BasePaymentTest
@@ -175,6 +161,7 @@ public function cancelShouldCallCancelAuthorizationOnUnzerObject(): void
      * Verify charge throws exception if payment is not set.
      *
      * @test
+     *
      * @dataProvider chargeValueProvider
      *
      * @param float|null $value
diff --git a/vendor/unzerdev/php-sdk/test/unit/Resources/TransactionTypes/CancellationTest.php b/vendor/unzerdev/php-sdk/test/unit/Resources/TransactionTypes/CancellationTest.php
index 984608e..b8023c0 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Resources/TransactionTypes/CancellationTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Resources/TransactionTypes/CancellationTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of the Cancellation transaction type.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Resources\TransactionTypes;
 
 use UnzerSDK\Constants\CancelReasonCodes;
diff --git a/vendor/unzerdev/php-sdk/test/unit/Resources/TransactionTypes/ChargeTest.php b/vendor/unzerdev/php-sdk/test/unit/Resources/TransactionTypes/ChargeTest.php
index c21f642..39ce511 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Resources/TransactionTypes/ChargeTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Resources/TransactionTypes/ChargeTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of the Authorization transaction type.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Resources\TransactionTypes;
 
 use UnzerSDK\Constants\RecurrenceTypes;
@@ -80,18 +65,16 @@ public function gettersAndSettersShouldWorkProperly(): void
     }
 
     /**
-     * Setting recurrence type without a payment type Should raise Exception.
+     * Setting recurrence type without a payment type does not raise exception.
      *
      * @test
      */
-    public function SetRecurrenceTypeShouldRaiseExceptionWOPaymentType()
+    public function recurrenceTypeCanBeSetWithoutTypeParameter()
     {
         $charge = new Charge();
 
         $this->assertEmpty($charge->getAdditionalTransactionData());
         $this->assertEmpty($charge->getRecurrenceType());
-        $this->expectException(RuntimeException::class);
-        $this->expectExceptionMessage('Payment type can not be determined. Set it first or provide it via parameter $paymentType.');
 
         $charge->setRecurrenceType(RecurrenceTypes::ONE_CLICK);
     }
@@ -138,6 +121,28 @@ public function aChargeShouldBeUpdatedThroughResponseHandling(): void
         $this->assertEquals('4065.6865.6416', $charge->getDescriptor());
     }
 
+    /**
+     * Verify response with empty account data can be handled.
+     *
+     * @test
+     */
+    public function verifyResponseWithEmptyAccountDataCanBeHandled()
+    {
+        $charge = new Charge();
+
+        $testResponse = new stdClass();
+        $testResponse->Iban = '';
+        $testResponse->Bic = '';
+        $testResponse->Holder = '';
+        $testResponse->Descriptor = '';
+
+        $charge->handleResponse($testResponse);
+        $this->assertNull($charge->getIban());
+        $this->assertNull($charge->getBic());
+        $this->assertNull($charge->getHolder());
+        $this->assertNull($charge->getDescriptor());
+    }
+
     /**
      * Verify getLinkedResources throws exception if the paymentType is not set.
      *
@@ -211,11 +216,19 @@ public function getCancelledAmountReturnsTheCancelledAmount(): void
         $charge = new Charge(123.4, 'myCurrency', 'https://my-return-url.test');
         $this->assertEquals(0.0, $charge->getCancelledAmount());
 
-        $cancellation1 = new Cancellation(10.0);
+        $cancellationJson = '{
+            "type": "cancel-charge",
+            "status": "success",
+            "amount": "10"
+        }';
+
+        $cancellation1 = new Cancellation();
+        $cancellation1->handleResponse(json_decode($cancellationJson));
         $charge->addCancellation($cancellation1);
         $this->assertEquals(10.0, $charge->getCancelledAmount());
 
-        $cancellation2 = new Cancellation(10.0);
+        $cancellation2 = new Cancellation();
+        $cancellation2->handleResponse(json_decode($cancellationJson));
         $charge->addCancellation($cancellation2);
         $this->assertEquals(20.0, $charge->getCancelledAmount());
     }
diff --git a/vendor/unzerdev/php-sdk/test/unit/Resources/TransactionTypes/ChargebackTest.php b/vendor/unzerdev/php-sdk/test/unit/Resources/TransactionTypes/ChargebackTest.php
new file mode 100644
index 0000000..cee991c
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/test/unit/Resources/TransactionTypes/ChargebackTest.php
@@ -0,0 +1,184 @@
+<?php
+
+/** @noinspection PhpUnhandledExceptionInspection */
+/** @noinspection PhpDocMissingThrowsInspection */
+/**
+ * This class defines unit tests to verify functionality of the Cancellation transaction type.
+ *
+ * @link  https://docs.unzer.com/
+ *
+ */
+
+namespace Resources\TransactionTypes;
+
+use UnzerSDK\Resources\Payment;
+use UnzerSDK\Resources\PaymentTypes\PaylaterInvoice;
+use UnzerSDK\Resources\TransactionTypes\Charge;
+use UnzerSDK\Resources\TransactionTypes\Chargeback;
+use UnzerSDK\Services\HttpService;
+use UnzerSDK\Services\ResourceService;
+use UnzerSDK\test\BasePaymentTest;
+use UnzerSDK\test\Fixtures\JsonProvider;
+use UnzerSDK\Unzer;
+
+class ChargebackTest extends BasePaymentTest
+{
+    /**
+     * Verify getters and setters.
+     *
+     * @test
+     */
+    public function gettersAndSettersShouldWorkProperly(): void
+    {
+        $chargeback = new Chargeback();
+        $this->assertNull($chargeback->getAmount());
+        $this->assertEmpty($chargeback->getPaymentReference());
+
+        $chargeback = new Chargeback(123.4);
+        $this->assertEquals(123.4, $chargeback->getAmount());
+
+        $chargeback->setAmount(567.8);
+        $this->assertEquals(567.8, $chargeback->getAmount());
+
+        $chargeback->setPaymentReference('my Payment Reference');
+        $this->assertEquals('my Payment Reference', $chargeback->getPaymentReference());
+    }
+
+    /**
+     * Verify json response is handled properly
+     *
+     * @test
+     */
+    public function jsonResponseShouldBeHandledProperly()
+    {
+        $responseObject = json_decode(JsonProvider::getJsonFromFile('chargeback.json'));
+
+        $chargeback = (new Chargeback())->setPayment(new Payment());
+        $this->assertFalse($chargeback->isSuccess());
+        $this->assertNull($chargeback->getId());
+        $this->assertNull($chargeback->getUniqueId());
+        $this->assertNull($chargeback->getShortId());
+        $this->assertNull($chargeback->getTraceId());
+        $this->assertNull($chargeback->getAmount());
+        $this->assertNull($chargeback->getDate());
+        $this->assertEmpty($chargeback->getMessage()->getCustomer());
+        $this->assertEmpty($chargeback->getMessage()->getMerchant());
+
+        $chargeback->handleResponse($responseObject);
+
+        $this->assertEquals('s-cbk-1', $chargeback->getId());
+        $this->assertEquals('31HA0xyz', $chargeback->getUniqueId());
+        $this->assertEquals('1234.1234.1234', $chargeback->getShortId());
+        $this->assertEquals('trace-123', $chargeback->getTraceId());
+        $this->assertEquals(119.0000, $chargeback->getAmount());
+        $this->assertEquals('2023-02-28 08:00:00', $chargeback->getDate());
+        $this->assertEquals('Your payments have been successfully processed.', $chargeback->getMessage()->getCustomer());
+        $this->assertEquals('Transaction succeeded', $chargeback->getMessage()->getMerchant());
+
+        $this->assertEquals('s-pay-123', $chargeback->getPaymentId());
+    }
+
+    /**
+     * verify fetching Chargeback by id without charge ID uses expected endpoint.
+     *
+     * @test
+     */
+    public function fetchChargebackByIdWithoutChargeId(): void
+    {
+        $responseObject = json_decode(JsonProvider::getJsonFromFile('paymentWithDirectChargeback.json'));
+        $chargebackJson = JsonProvider::getJsonFromFile('chargeback.json');
+
+        $unzer = (new Unzer('s-priv-123'));
+        $payment = (new Payment())
+            ->setParentResource($unzer)
+            ->setId('MyPaymentId');
+
+        // Mock http service
+        $httpServiceMock = $this->getMockBuilder(HttpService::class)
+            ->disableOriginalConstructor()->onlyMethods(['send'])->getMock();
+
+        $httpServiceMock->expects($this->once())
+            ->method('send')
+            ->with('/payments/s-pay-329982/chargebacks/s-cbk-1')
+            ->willReturn($chargebackJson);
+
+        // Mock Resource service
+        $resourceServiceMock = $this->getMockBuilder(ResourceService::class)
+            ->disableOriginalConstructor()->onlyMethods(['getResource', 'fetchPayment', 'fetchPaymentType'])->getMock();
+        $resourceServiceMock->method('fetchPaymentType')->willReturn(new PaylaterInvoice());
+        $resourceServiceMock->expects($this->once())->method('fetchPayment')->willReturn($payment);
+
+        $unzer->setResourceService($resourceServiceMock)
+            ->setHttpService($httpServiceMock);
+
+        $payment->handleResponse($responseObject);
+
+        $fetchedChargeback = $unzer->fetchChargebackById('MyPaymentId', 's-cbk-1', null);
+        $this->assertEquals('s-cbk-1', $fetchedChargeback->getId());
+        $this->assertEquals('31HA0xyz', $fetchedChargeback->getUniqueId());
+        $this->assertEquals('1234.1234.1234', $fetchedChargeback->getShortId());
+        $this->assertEquals('trace-123', $fetchedChargeback->getTraceId());
+        $this->assertInstanceOf(Payment::class, $fetchedChargeback->getParentResource());
+    }
+
+    /**
+     * verify fetching Chargeback by id without charge ID uses expected endpoint.
+     *
+     * @test
+     *
+     * @dataProvider fetchChargebackByIdDP
+     *
+     * @param mixed $chargeId
+     * @param mixed $expectedUri
+     */
+    public function fetchChargebackById($chargeId, $expectedUri): void
+    {
+        $responseObject = json_decode(JsonProvider::getJsonFromFile('paymentWithMultipleChargebacks.json'));
+        $chargebackJson = JsonProvider::getJsonFromFile('chargeback.json');
+
+        $unzer = (new Unzer('s-priv-123'));
+        $payment = (new Payment())
+            ->setParentResource($unzer);
+
+        // Mock http service
+        $httpServiceMock = $this->getMockBuilder(HttpService::class)
+            ->disableOriginalConstructor()->onlyMethods(['send'])->getMock();
+
+        $httpServiceMock->expects($this->once())
+            ->method('send')
+            ->with($expectedUri)
+            ->willReturn($chargebackJson);
+
+        // Mock Resource service
+        $resourceServiceMock = $this->getMockBuilder(ResourceService::class)
+            ->disableOriginalConstructor()->onlyMethods(['getResource', 'fetchPayment', 'fetchPaymentType'])->getMock();
+        $resourceServiceMock->method('fetchPaymentType')->willReturn(new PaylaterInvoice());
+        $resourceServiceMock->expects($this->once())->method('fetchPayment')->willReturn($payment);
+
+        $unzer->setResourceService($resourceServiceMock)
+            ->setHttpService($httpServiceMock);
+
+        $payment->handleResponse($responseObject);
+
+        $fetchedChargeback = $unzer->fetchChargebackById('s-pay-123', 's-cbk-1', $chargeId);
+        $this->assertEquals('s-cbk-1', $fetchedChargeback->getId());
+        $this->assertEquals('31HA0xyz', $fetchedChargeback->getUniqueId());
+        $this->assertEquals('1234.1234.1234', $fetchedChargeback->getShortId());
+        $this->assertEquals('trace-123', $fetchedChargeback->getTraceId());
+        $this->assertInstanceOf(Charge::class, $fetchedChargeback->getParentResource());
+    }
+
+    public function fetchChargebackByIdDP(): array
+    {
+        return [
+            'first chargeback' => [
+                's-chg-1',
+                '/payments/s-pay-123/charges/s-chg-1/chargebacks/s-cbk-1'
+            ],
+            'second chargeback' => [
+                's-chg-2',
+                '/payments/s-pay-123/charges/s-chg-2/chargebacks/s-cbk-1'
+            ]
+        ];
+    }
+}
diff --git a/vendor/unzerdev/php-sdk/test/unit/Resources/TransactionTypes/DummyTransactionType.php b/vendor/unzerdev/php-sdk/test/unit/Resources/TransactionTypes/DummyTransactionType.php
index 641c844..3205ae9 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Resources/TransactionTypes/DummyTransactionType.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Resources/TransactionTypes/DummyTransactionType.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This dummy class helps validating the functionalities of the abstract transaction type.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Resources\TransactionTypes;
 
 use UnzerSDK\Resources\TransactionTypes\AbstractTransactionType;
diff --git a/vendor/unzerdev/php-sdk/test/unit/Resources/TransactionTypes/PayoutTest.php b/vendor/unzerdev/php-sdk/test/unit/Resources/TransactionTypes/PayoutTest.php
index 791c296..95e8873 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Resources/TransactionTypes/PayoutTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Resources/TransactionTypes/PayoutTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of the Payout transaction type.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Resources\TransactionTypes;
 
 use UnzerSDK\Unzer;
diff --git a/vendor/unzerdev/php-sdk/test/unit/Resources/TransactionTypes/ShipmentTest.php b/vendor/unzerdev/php-sdk/test/unit/Resources/TransactionTypes/ShipmentTest.php
index 260b0c3..77795f5 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Resources/TransactionTypes/ShipmentTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Resources/TransactionTypes/ShipmentTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of the Shipment transaction type.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Resources\TransactionTypes;
 
 use UnzerSDK\Resources\TransactionTypes\Shipment;
@@ -57,6 +42,7 @@ public function gettersAndSettersShouldWorkProperly(): Shipment
      * @test
      *
      * @param Shipment $shipment
+     *
      * @depends gettersAndSettersShouldWorkProperly
      */
     public function aShipmentShouldBeUpdatedThroughResponseHandling(Shipment $shipment): void
diff --git a/vendor/unzerdev/php-sdk/test/unit/Resources/WebhookTest.php b/vendor/unzerdev/php-sdk/test/unit/Resources/WebhookTest.php
index 7542d91..12c76f4 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Resources/WebhookTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Resources/WebhookTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of the Webhook resource.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Resources;
 
 use UnzerSDK\Resources\Webhook;
diff --git a/vendor/unzerdev/php-sdk/test/unit/Resources/WebhooksTest.php b/vendor/unzerdev/php-sdk/test/unit/Resources/WebhooksTest.php
index 07e2c7f..436aeaf 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Resources/WebhooksTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Resources/WebhooksTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of the Webhooks resource.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Resources;
 
 use UnzerSDK\Constants\WebhookEvents;
diff --git a/vendor/unzerdev/php-sdk/test/unit/Services/CancelServiceTest.php b/vendor/unzerdev/php-sdk/test/unit/Services/CancelServiceTest.php
index c59c4dc..8b56bfd 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Services/CancelServiceTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Services/CancelServiceTest.php
@@ -1,35 +1,23 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify cancel functionality of the CancelService.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Services;
 
 use UnzerSDK\Constants\ApiResponseCodes;
 use UnzerSDK\Exceptions\UnzerApiException;
 use UnzerSDK\Resources\EmbeddedResources\Amount;
 use UnzerSDK\Resources\Payment;
+use UnzerSDK\Resources\PaymentTypes\BasePaymentType;
+use UnzerSDK\Resources\PaymentTypes\Klarna;
+use UnzerSDK\Resources\PaymentTypes\PaylaterInvoice;
 use UnzerSDK\Resources\TransactionTypes\Authorization;
 use UnzerSDK\Resources\TransactionTypes\Cancellation;
 use UnzerSDK\Resources\TransactionTypes\Charge;
@@ -121,10 +109,38 @@ public function chargesShouldBeCancelledIfAuthDoesNotExist2(): void
         $this->assertEquals([$cancellation1, $cancellation2], $payment->cancelAmount());
     }
 
+    /**
+     * Verify that max cancel amount is calculated correctly in edge case.
+     *
+     * @test
+     */
+    public function maxCancelAmountShouldBeRoundedCorrectly(): void
+    {
+        $cancelSrvMock = new CancelService($this->unzer);
+        $reflection = new \ReflectionClass(get_class($cancelSrvMock));
+        $method = $reflection->getMethod('calculateMaxReversalAmount');
+        $method->setAccessible(true);
+
+        $chargeAmount = 12.3;
+        $receiptAmount = 10.0;
+        $canceledAmount = 2.3;
+
+        // Verify not rounded result would not equal zero.
+        $this->assertNotEquals(0, $chargeAmount - $receiptAmount - $canceledAmount);
+
+        $chargeMock = $this->getMockBuilder(Charge::class)->setMethods(['getCancelledAmount'])->setConstructorArgs([$chargeAmount])->getMock();
+        $chargeMock->method('getCancelledAmount')->willReturn($canceledAmount);
+
+        $maxReversalAmount = $method->invokeArgs($cancelSrvMock, [$chargeMock , $receiptAmount]);
+
+        $this->assertEquals(0, $maxReversalAmount);
+    }
+
     /**
      * Verify certain errors are allowed during cancellation and will be ignored.
      *
      * @test
+     *
      * @dataProvider allowedErrorCodesDuringChargeCancel
      *
      * @param string $allowedExceptionCode
@@ -204,6 +220,7 @@ public function cancelAuthorizationAmountShouldCallCancelWithTheRemainingAmountA
      * Verify certain errors are allowed during cancellation and will be ignored.
      *
      * @test
+     *
      * @dataProvider allowedErrorCodesDuringAuthCancel
      *
      * @param string $exceptionCode
@@ -270,6 +287,24 @@ public function paymentCancelShouldFetchPaymentIfPaymentIdIsPassed(): void
         $cancelService->cancelPayment('paymentId');
     }
 
+    /** Verify that payment types processed on P3 are not canceled via unzer::cancelPayment method.
+     * @test
+     *
+     * @dataProvider p3PaymentTypes
+     *
+     * @param BasePaymentType $paymentType
+     */
+    public function cancelPaymentMethodThrowsRuntimeExceptionWithP3PaymentType(BasePaymentType $paymentType): void
+    {
+        $dummyPayment = new Payment($this->unzer);
+        $dummyPayment->setPaymentType($paymentType);
+
+        $this->expectException(\RuntimeException::class);
+        $expectedMessage = 'The used payment type is not supported by this cancel method. Please use Unzer::cancelAuthorizedPayment() or Unzer::cancelChargedPayment() instead.';
+        $this->expectExceptionMessage($expectedMessage);
+        $this->unzer->cancelPayment($dummyPayment, 33.33);
+    }
+
     //<editor-fold desc="Data Providers">
 
     /**
@@ -297,5 +332,16 @@ public function allowedErrorCodesDuringAuthCancel(): array
         ];
     }
 
+    /**
+     * @return array
+     */
+    public function p3PaymentTypes(): array
+    {
+        return [
+            'Paylater Invoice' => [(new PaylaterInvoice())->setId('s-piv-dummyId')],
+            'Klarna' => [(new Klarna())->setId('s-piv-dummyId')]
+        ];
+    }
+
     //</editor-fold>
 }
diff --git a/vendor/unzerdev/php-sdk/test/unit/Services/DummyAdapter.php b/vendor/unzerdev/php-sdk/test/unit/Services/DummyAdapter.php
index 48cae05..399d50c 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Services/DummyAdapter.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Services/DummyAdapter.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines a dummy http adapter used for unit tests.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Services;
 
 use UnzerSDK\Adapter\HttpAdapterInterface;
@@ -33,7 +18,7 @@ class DummyAdapter implements HttpAdapterInterface
     /**
      * {@inheritDoc}
      */
-    public function init($url, $payload = null, $httpMethod = HttpAdapterInterface::REQUEST_GET): void
+    public function init(string $url, string $payload = null, string $httpMethod = HttpAdapterInterface::REQUEST_GET): void
     {
         // do nothing
     }
diff --git a/vendor/unzerdev/php-sdk/test/unit/Services/DummyDebugHandler.php b/vendor/unzerdev/php-sdk/test/unit/Services/DummyDebugHandler.php
index 72b0855..e95126f 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Services/DummyDebugHandler.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Services/DummyDebugHandler.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines a dummy used to test the DebugHandlerInterface.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Services;
 
 use UnzerSDK\Interfaces\DebugHandlerInterface;
diff --git a/vendor/unzerdev/php-sdk/test/unit/Services/EnvironmentServiceTest.php b/vendor/unzerdev/php-sdk/test/unit/Services/EnvironmentServiceTest.php
index 24460da..4bdfbbb 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Services/EnvironmentServiceTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Services/EnvironmentServiceTest.php
@@ -1,33 +1,18 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This test is verifying that the set environment variables will lead to the correct configuration.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit\Services
  */
+
 namespace UnzerSDK\test\unit\Services;
 
-use UnzerSDK\Services\EnvironmentService;
 use PHPUnit\Framework\TestCase;
+use UnzerSDK\test\Helper\TestEnvironmentService;
 
 class EnvironmentServiceTest extends TestCase
 {
@@ -37,6 +22,7 @@ class EnvironmentServiceTest extends TestCase
      * Verify test logging environment vars are correctly interpreted.
      *
      * @test
+     *
      * @dataProvider envVarsShouldBeInterpretedAsExpectedDP
      *
      * @param mixed $verboseLog
@@ -45,14 +31,14 @@ class EnvironmentServiceTest extends TestCase
     public function envVarsShouldBeInterpretedAsExpected($verboseLog, $expectedLogEnabled): void
     {
         unset(
-            $_SERVER[EnvironmentService::ENV_VAR_NAME_VERBOSE_TEST_LOGGING]
+            $_SERVER[TestEnvironmentService::ENV_VAR_NAME_VERBOSE_TEST_LOGGING]
         );
 
         if ($verboseLog !== null) {
-            $_SERVER[EnvironmentService::ENV_VAR_NAME_VERBOSE_TEST_LOGGING] = $verboseLog;
+            $_SERVER[TestEnvironmentService::ENV_VAR_NAME_VERBOSE_TEST_LOGGING] = $verboseLog;
         }
 
-        $this->assertEquals($expectedLogEnabled, EnvironmentService::isTestLoggingActive());
+        $this->assertEquals($expectedLogEnabled, TestEnvironmentService::isTestLoggingActive());
     }
 
     /**
@@ -70,19 +56,19 @@ public function envVarsShouldBeInterpretedAsExpected($verboseLog, $expectedLogEn
     public function privateKeyStringIsReturnedCorrectly($keyEnvVar, $non3dsKeyEnvVar, $non3ds, $expected): void
     {
         unset(
-            $_SERVER[EnvironmentService::ENV_VAR_TEST_PRIVATE_KEY],
-            $_SERVER[EnvironmentService::ENV_VAR_TEST_PRIVATE_KEY_NON_3DS]
+            $_SERVER[TestEnvironmentService::ENV_VAR_TEST_PRIVATE_KEY_DEFAULT],
+            $_SERVER[TestEnvironmentService::ENV_VAR_TEST_PRIVATE_KEY_ALTERNATIVE]
         );
 
         if ($keyEnvVar !== null) {
-            $_SERVER[EnvironmentService::ENV_VAR_TEST_PRIVATE_KEY] = $keyEnvVar;
+            $_SERVER[TestEnvironmentService::ENV_VAR_TEST_PRIVATE_KEY_DEFAULT] = $keyEnvVar;
         }
 
         if ($non3dsKeyEnvVar !== null) {
-            $_SERVER[EnvironmentService::ENV_VAR_TEST_PRIVATE_KEY_NON_3DS] = $non3dsKeyEnvVar;
+            $_SERVER[TestEnvironmentService::ENV_VAR_TEST_PRIVATE_KEY_ALTERNATIVE] = $non3dsKeyEnvVar;
         }
 
-        $this->assertEquals($expected, EnvironmentService::getTestPrivateKey($non3ds));
+        $this->assertEquals($expected, TestEnvironmentService::getTestPrivateKey($non3ds));
     }
 
     /**
@@ -100,19 +86,19 @@ public function privateKeyStringIsReturnedCorrectly($keyEnvVar, $non3dsKeyEnvVar
     public function publicKeyStringIsReturnedCorrectly($keyEnvVar, $non3dsKeyEnvVar, $non3ds, $expected): void
     {
         unset(
-            $_SERVER[EnvironmentService::ENV_VAR_TEST_PUBLIC_KEY],
-            $_SERVER[EnvironmentService::ENV_VAR_TEST_PUBLIC_KEY_NON_3DS]
+            $_SERVER[TestEnvironmentService::ENV_VAR_TEST_PUBLIC_KEY_DEFAULT],
+            $_SERVER[TestEnvironmentService::ENV_VAR_TEST_PUBLIC_KEY_ALTERNATIVE]
         );
 
         if ($keyEnvVar !== null) {
-            $_SERVER[EnvironmentService::ENV_VAR_TEST_PUBLIC_KEY] = $keyEnvVar;
+            $_SERVER[TestEnvironmentService::ENV_VAR_TEST_PUBLIC_KEY_DEFAULT] = $keyEnvVar;
         }
 
         if ($non3dsKeyEnvVar !== null) {
-            $_SERVER[EnvironmentService::ENV_VAR_TEST_PUBLIC_KEY_NON_3DS] = $non3dsKeyEnvVar;
+            $_SERVER[TestEnvironmentService::ENV_VAR_TEST_PUBLIC_KEY_ALTERNATIVE] = $non3dsKeyEnvVar;
         }
 
-        $this->assertEquals($expected, EnvironmentService::getTestPublicKey($non3ds));
+        $this->assertEquals($expected, TestEnvironmentService::getTestPublicKey($non3ds));
     }
 
     //</editor-fold>
diff --git a/vendor/unzerdev/php-sdk/test/unit/Services/HttpServiceTest.php b/vendor/unzerdev/php-sdk/test/unit/Services/HttpServiceTest.php
index dc5c9c1..c186e5c 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Services/HttpServiceTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Services/HttpServiceTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of the HttpService.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Services;
 
 use UnzerSDK\Adapter\CurlAdapter;
@@ -111,8 +96,9 @@ public function sendShouldInitAndSendRequest(): void
         $adapterMock->expects($this->once())->method('init')->with(
             $this->callback(
                 static function ($url) {
-                    return str_replace(['dev-api', 'stg-api'], 'api', $url) === 'https://api.unzer.com/v1/my/uri/123';
-                }),
+                    return str_replace(['dev-api', 'stg-api'], 'sbx-api', $url) === 'https://sbx-api.unzer.com/v1/my/uri/123';
+                }
+            ),
             '{"dummyResource": "JsonSerialized"}',
             'GET'
         );
@@ -142,6 +128,7 @@ static function ($url) {
      * Verify 'Accept-Language' header only set when a locale is defined in the Unzer object.
      *
      * @test
+     *
      * @dataProvider languageShouldOnlyBeSetIfSpecificallyDefinedDP
      *
      * @param $locale
@@ -159,7 +146,8 @@ public function languageShouldOnlyBeSetIfSpecificallyDefined($locale): void
             $this->callback(
                 static function ($headers) use ($locale) {
                     return $locale === ($headers['Accept-Language'] ?? null);
-                })
+                }
+            )
         );
         $adapterMock->method('execute')->willReturn('myResponseString');
 
@@ -167,6 +155,28 @@ static function ($headers) use ($locale) {
         $httpServiceMock->send('/my/uri/123', $resource);
     }
 
+    /**
+     * Verify 'CLIENTIP' header only set when a clientIp is defined in the Unzer object.
+     *
+     * @test
+     *
+     * @dataProvider clientIpHeaderShouldBeSetProperlyDP
+     *
+     * @param       $clientIp
+     * @param mixed $isHeaderExpected
+     */
+    public function clientIpHeaderShouldBeSetProperly($clientIp, $isHeaderExpected): void
+    {
+        $unzer = new Unzer('s-priv-MyTestKey');
+        $unzer->setClientIp($clientIp);
+
+        $composeHttpHeaders = $unzer->getHttpService()->composeHttpHeaders($unzer);
+        $this->assertEquals($isHeaderExpected, isset($composeHttpHeaders['CLIENTIP']));
+        if ($isHeaderExpected) {
+            $this->assertEquals($clientIp, $composeHttpHeaders['CLIENTIP']);
+        }
+    }
+
     /**
      * Verify debugLog logs to debug handler if debug mode and a handler are set.
      *
@@ -184,9 +194,10 @@ public function sendShouldLogDebugMessagesIfDebugModeAndHandlerAreSet(): void
         $loggerMock = $this->getMockBuilder(DummyDebugHandler::class)->setMethods(['log'])->getMock();
         $loggerMock->expects($this->exactly(7))->method('log')->withConsecutive(
             [ $this->callback(
-                    static function ($string) {
-                        return str_replace(['dev-api', 'stg-api'], 'api', $string) === '(' . (getmypid()) . ') GET: https://api.unzer.com/v1/my/uri/123';
-                    })
+                static function ($string) {
+                    return str_replace(['dev-api', 'stg-api'], 'sbx-api', $string) === '(' . (getmypid()) . ') GET: https://sbx-api.unzer.com/v1/my/uri/123';
+                }
+            )
             ],
             [ $this->callback(
                 static function ($string) {
@@ -195,13 +206,15 @@ static function ($string) {
                     $elements = json_decode($matches[1], true);
                     return array_key_exists('Authorization', $elements) && array_key_exists('Content-Type', $elements) &&
                            array_key_exists('SDK-TYPE', $elements) && array_key_exists('SDK-VERSION', $elements);
-                })
+                }
+            )
             ],
             ['(' . (getmypid()) . ') Response: (200) {"response":"myResponseString"}'],
             [ $this->callback(
                 static function ($string) {
-                    return str_replace(['dev-api', 'stg-api'], 'api', $string) === '(' . (getmypid()) . ') POST: https://api.unzer.com/v1/my/uri/123';
-                })
+                    return str_replace(['dev-api', 'stg-api'], 'sbx-api', $string) === '(' . (getmypid()) . ') POST: https://sbx-api.unzer.com/v1/my/uri/123';
+                }
+            )
             ],
             [ $this->callback(
                 static function ($string) {
@@ -210,7 +223,8 @@ static function ($string) {
                     $elements = json_decode($matches[1], true);
                     return array_key_exists('Authorization', $elements) && array_key_exists('Content-Type', $elements) &&
                         array_key_exists('SDK-TYPE', $elements) && array_key_exists('SDK-VERSION', $elements);
-                })
+                }
+            )
             ],
             ['(' . (getmypid()) . ') Request: {"dummyResource": "JsonSerialized"}'],
             ['(' . (getmypid()) . ') Response: (201) {"response":"myResponseString"}']
@@ -257,6 +271,7 @@ public function handleErrorsShouldThrowExceptionIfResponseIsEmpty(): void
      * Verify handleErrors will throw Exception if responseCode is greaterOrEqual to 400 or is not a number.
      *
      * @test
+     *
      * @dataProvider responseCodeProvider
      *
      * @param string $responseCode
@@ -369,21 +384,22 @@ public function handleErrorsShouldThrowExceptionIfResponseContainsErrorField():
     }
 
     /**
-     * Verify environment switches when environment variable defines PAPI environment.
+     * Verify API environment switches accordingly depending on environment variable and keypair.
      *
      * @test
      *
      * @dataProvider environmentUrlSwitchesWithEnvironmentVariableDP
      *
-     * @param $environment
-     * @param $apiUrl
+     * @param        $environment
+     * @param        $apiUrl
+     * @param string $key
      */
-    public function environmentUrlSwitchesWithEnvironmentVariable($environment, $apiUrl): void
+    public function environmentUrlSwitchesWithEnvironmentVariable($environment, $apiUrl, string $key): void
     {
         $adapterMock = $this->getMockBuilder(CurlAdapter::class)->setMethods(['init', 'setUserAgent', 'setHeaders', 'execute', 'getResponseCode', 'close'])->getMock();
         /** @noinspection PhpParamsInspection */
         $adapterMock->expects($this->once())->method('init')->with($apiUrl, self::anything(), self::anything());
-        $resource = (new DummyResource())->setParentResource(new Unzer('s-priv-MyTestKey'));
+        $resource = (new DummyResource())->setParentResource(new Unzer($key));
         $adapterMock->method('execute')->willReturn('myResponseString');
         $adapterMock->method('getResponseCode')->willReturn('42');
 
@@ -434,17 +450,44 @@ public function languageShouldOnlyBeSetIfSpecificallyDefinedDP(): array
         ];
     }
 
+    /**
+     * Returns test data for method public function languageShouldOnlyBeSetIfSpecificallyDefined.
+     */
+    public function clientIpHeaderShouldBeSetProperlyDP(): array
+    {
+        return [
+            'valid ipv4' => ['111.222.333.444', true],
+            'valid ipv6' => ['684D:1111:222:3333:4444:5555:6:7', true],
+            'valid ipv6 (dual)' => ['2001:db8:3333:4444:5555:6666:1.2.3.4', true],
+            'empty string' => ['', false],
+            'null' => [null, false]
+        ];
+    }
+
     /**
      * @return array
      */
     public function environmentUrlSwitchesWithEnvironmentVariableDP(): array
     {
+        $devUrl = 'https://dev-api.unzer.com/v1';
+        $stgUrl = 'https://stg-api.unzer.com/v1';
+        $sbxUrl = 'https://sbx-api.unzer.com/v1';
+        $prodUrl = 'https://api.unzer.com/v1';
+
+        $prodKey = 'p-priv-MyTestKey';
+        $sbxKey = 's-priv-MyTestKey';
+
         return [
-            'Dev' => [EnvironmentService::ENV_VAR_VALUE_DEVELOPMENT_ENVIRONMENT, 'https://dev-api.unzer.com/v1'],
-            'Prod' => [EnvironmentService::ENV_VAR_VALUE_PROD_ENVIRONMENT, 'https://api.unzer.com/v1'],
-            'Stg' => [EnvironmentService::ENV_VAR_VALUE_STAGING_ENVIRONMENT, 'https://stg-api.unzer.com/v1'],
-            'else' => ['something else', 'https://api.unzer.com/v1'],
-            'undefined' => ['', 'https://api.unzer.com/v1']
+            'Dev with production key' => [EnvironmentService::ENV_VAR_VALUE_DEVELOPMENT_ENVIRONMENT, $prodUrl, $prodKey],
+            'Prod with production key' => [EnvironmentService::ENV_VAR_VALUE_PROD_ENVIRONMENT, $prodUrl, $prodKey],
+            'Stg with production key' => [EnvironmentService::ENV_VAR_VALUE_STAGING_ENVIRONMENT, $prodUrl, $prodKey],
+            'something else with production key' => ['something else', $prodUrl, $prodKey],
+            'undefined with production key' => ['', $prodUrl, $prodKey],
+            'Dev with sandbox key' => [EnvironmentService::ENV_VAR_VALUE_DEVELOPMENT_ENVIRONMENT, $devUrl, $sbxKey],
+            'Prod with sandbox key' => [EnvironmentService::ENV_VAR_VALUE_PROD_ENVIRONMENT, $sbxUrl, $sbxKey],
+            'Stg with sandbox key' => [EnvironmentService::ENV_VAR_VALUE_STAGING_ENVIRONMENT, $stgUrl, $sbxKey],
+            'something else with sandbox key' => ['something else', $sbxUrl, $sbxKey],
+            'undefined with sandbox key' => ['', $sbxUrl, $sbxKey],
         ];
     }
 
diff --git a/vendor/unzerdev/php-sdk/test/unit/Services/PaymentServiceTest.php b/vendor/unzerdev/php-sdk/test/unit/Services/PaymentServiceTest.php
index cc8c11e..f73cb6c 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Services/PaymentServiceTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Services/PaymentServiceTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of the payment service.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Services;
 
 use UnzerSDK\Constants\ApiResponseCodes;
@@ -52,6 +37,7 @@
 use UnzerSDK\Services\ResourceService;
 use UnzerSDK\test\BasePaymentTest;
 use PHPUnit\Framework\MockObject\MockObject;
+
 use function in_array;
 
 class PaymentServiceTest extends BasePaymentTest
@@ -86,6 +72,7 @@ public function gettersAndSettersShouldWorkProperly(): void
      * @test
      *
      * @param $card3ds
+     *
      * @dataProvider card3dsDataProvider
      */
     public function authorizeShouldCreateNewAuthorizationAndPayment($card3ds): void
@@ -129,6 +116,7 @@ public function authorizeShouldCreateNewAuthorizationAndPayment($card3ds): void
      * @test
      *
      * @param $card3ds
+     *
      * @dataProvider card3dsDataProvider
      */
     public function chargeShouldCreateNewPaymentAndCharge($card3ds): void
@@ -182,23 +170,57 @@ public function chargeAuthorizationShouldCallChargePaymentWithTheGivenPaymentObj
     }
 
     /**
+     * @deprecated
      * Verify chargeAuthorization calls fetchPayment if the payment object is passed as id string.
      *
      * @test
      */
-    public function chargeAuthorizationShouldCallFetchPaymentIfThePaymentIsPassedAsIdString(): void
+    public function chargeAuthorizationShouldCallChargePaymentMethod(): void
     {
         /** @var ResourceServiceInterface|MockObject $resourceSrvMock */
         $resourceSrvMock = $this->getMockBuilder(ResourceService::class)->setMethods(['fetchPayment'])->disableOriginalConstructor()->getMock();
-        $resourceSrvMock->expects($this->once())->method('fetchPayment')->willReturn(new Payment());
         /** @var PaymentService|MockObject $paymentSrvMock */
-        $paymentSrvMock = $this->getMockBuilder(PaymentService::class)->setMethods(['chargePayment', 'getResourceService'])->disableOriginalConstructor()->getMock();
+        $paymentSrvMock = $this->getMockBuilder(PaymentService::class)->setMethods(['chargePayment'])->disableOriginalConstructor()->getMock();
         $paymentSrvMock->expects($this->once())->method('chargePayment')->withAnyParameters();
-        $paymentSrvMock->expects(self::once())->method('getResourceService')->willReturn($resourceSrvMock);
 
         $paymentSrvMock->chargeAuthorization('myPaymentId');
     }
 
+    /**
+     * @deprecated
+     * Verify chargePayment calls fetchPayment if the payment object is passed as id string.
+     *
+     * @test
+     */
+    public function chargePaymentShouldCallerformChargeOnPaymentMethod(): void
+    {
+        /** @var ResourceServiceInterface|MockObject $resourceSrvMock */
+        $resourceSrvMock = $this->getMockBuilder(ResourceService::class)->setMethods(['fetchPayment'])->disableOriginalConstructor()->getMock();
+        /** @var PaymentService|MockObject $paymentSrvMock */
+        $paymentSrvMock = $this->getMockBuilder(PaymentService::class)->setMethods(['performChargeOnPayment'])->disableOriginalConstructor()->getMock();
+        $paymentSrvMock->expects($this->once())->method('performChargeOnPayment')->withAnyParameters();
+
+        $paymentSrvMock->chargePayment('myPaymentId');
+    }
+
+    /**
+     * Verify performChargeOnPayment calls fetchPayment if the payment object is passed as id string.
+     *
+     * @test
+     */
+    public function performChargeOnPaymentShouldCallFetchPaymentIfThePaymentIsPassedAsIdString(): void
+    {
+        /** @var ResourceServiceInterface|MockObject $resourceSrvMock */
+        $resourceSrvMock = $this->getMockBuilder(ResourceService::class)->setMethods(['fetchPayment', 'createResource'])->disableOriginalConstructor()->getMock();
+        $resourceSrvMock->expects($this->once())->method('fetchPayment')->willReturn(new Payment());
+        $resourceSrvMock->expects($this->once())->method('createResource')->willReturn(new Charge());
+        /** @var PaymentService|MockObject $paymentSrvMock */
+        $paymentSrvMock = $this->getMockBuilder(PaymentService::class)->setMethods(['getResourceService'])->disableOriginalConstructor()->getMock();
+        $paymentSrvMock->expects(self::exactly(2))->method('getResourceService')->willReturn($resourceSrvMock);
+
+        $paymentSrvMock->performChargeOnPayment('myPaymentId', new Charge());
+    }
+
     /**
      * Verify chargePayment will create a charge object and call create on ResourceService with it.
      *
@@ -218,7 +240,6 @@ public function chargePaymentShouldCallCreateOnResourceServiceWithNewCharge(): v
                 $newPayment = $charge->getPayment();
                 return $charge instanceof Charge &&
                     $charge->getAmount() === 1.234 &&
-                    $charge->getCurrency() === 'myTestCurrency' &&
                     $charge->getOrderId() === null &&
                     $charge->getInvoiceId() === null &&
                     $newPayment instanceof Payment &&
@@ -227,7 +248,7 @@ public function chargePaymentShouldCallCreateOnResourceServiceWithNewCharge(): v
             }));
 
         $paymentSrv     = $unzer->setResourceService($resourceSrvMock)->getPaymentService();
-        $returnedCharge = $paymentSrv->chargePayment($payment, 1.234, 'myTestCurrency');
+        $returnedCharge = $paymentSrv->chargePayment($payment, 1.234);
         $this->assertEquals([$returnedCharge], $payment->getCharges());
     }
 
@@ -250,7 +271,6 @@ public function chargePaymentShouldSetArgumentsInNewChargeObject(): void
                 $newPayment = $charge->getPayment();
                 return $charge instanceof Charge &&
                     $charge->getAmount() === 1.234 &&
-                    $charge->getCurrency() === 'myTestCurrency' &&
                     $charge->getOrderId() === 'orderId' &&
                     $charge->getInvoiceId() === 'invoiceId' &&
                     $newPayment instanceof Payment &&
@@ -259,7 +279,7 @@ public function chargePaymentShouldSetArgumentsInNewChargeObject(): void
             }));
 
         $paymentSrv     = $unzer->setResourceService($resourceSrvMock)->getPaymentService();
-        $returnedCharge = $paymentSrv->chargePayment($payment, 1.234, 'myTestCurrency', 'orderId', 'invoiceId');
+        $returnedCharge = $paymentSrv->chargePayment($payment, 1.234, 'orderId', 'invoiceId');
         $this->assertEquals([$returnedCharge], $payment->getCharges());
     }
 
@@ -504,7 +524,9 @@ public function payoutShouldCreateNewPayout(): void
                 'orderId' => 'id-4',
                 'returnUrl' => 'url',
                 'resources' => ['basketId' => 'id-2', 'customerId' => 'id-1', 'metadataId' => 'id-3', 'typeId' => 'id']
-            ], $returnedPayout->expose());
+            ],
+            $returnedPayout->expose()
+        );
     }
 
     //</editor-fold>
diff --git a/vendor/unzerdev/php-sdk/test/unit/Services/ResourceNameServiceTest.php b/vendor/unzerdev/php-sdk/test/unit/Services/ResourceNameServiceTest.php
index b0941fc..3df0cb9 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Services/ResourceNameServiceTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Services/ResourceNameServiceTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of the resource name service.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Services;
 
 use UnzerSDK\Services\ResourceNameService;
@@ -35,6 +20,7 @@ class ResourceNameServiceTest extends BasePaymentTest
      * Verify getting the short name of a class.
      *
      * @test
+     *
      * @dataProvider classShortNameTestDP
      *
      * @param string $className
diff --git a/vendor/unzerdev/php-sdk/test/unit/Services/ResourceServiceTest.php b/vendor/unzerdev/php-sdk/test/unit/Services/ResourceServiceTest.php
index 6564ce5..432bea0 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Services/ResourceServiceTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Services/ResourceServiceTest.php
@@ -1,36 +1,23 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of the resource service.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Services;
 
 use DateTime;
+use PHPUnit\Framework\MockObject\MockObject;
+use RuntimeException;
+use stdClass;
 use UnzerSDK\Adapter\HttpAdapterInterface;
 use UnzerSDK\Constants\ApiResponseCodes;
 use UnzerSDK\Exceptions\UnzerApiException;
-use UnzerSDK\Unzer;
 use UnzerSDK\Interfaces\ResourceServiceInterface;
 use UnzerSDK\Resources\AbstractUnzerResource;
 use UnzerSDK\Resources\Basket;
@@ -44,12 +31,17 @@
 use UnzerSDK\Resources\PaymentTypes\Card;
 use UnzerSDK\Resources\PaymentTypes\EPS;
 use UnzerSDK\Resources\PaymentTypes\Giropay;
-use UnzerSDK\Resources\PaymentTypes\InstallmentSecured;
+use UnzerSDK\Resources\PaymentTypes\Googlepay;
 use UnzerSDK\Resources\PaymentTypes\Ideal;
+use UnzerSDK\Resources\PaymentTypes\InstallmentSecured;
 use UnzerSDK\Resources\PaymentTypes\Invoice;
 use UnzerSDK\Resources\PaymentTypes\InvoiceSecured;
+use UnzerSDK\Resources\PaymentTypes\Klarna;
+use UnzerSDK\Resources\PaymentTypes\PaylaterInvoice;
 use UnzerSDK\Resources\PaymentTypes\Paypal;
 use UnzerSDK\Resources\PaymentTypes\PIS;
+use UnzerSDK\Resources\PaymentTypes\PostFinanceCard;
+use UnzerSDK\Resources\PaymentTypes\PostFinanceEfinance;
 use UnzerSDK\Resources\PaymentTypes\Prepayment;
 use UnzerSDK\Resources\PaymentTypes\Przelewy24;
 use UnzerSDK\Resources\PaymentTypes\SepaDirectDebit;
@@ -68,9 +60,7 @@
 use UnzerSDK\test\BasePaymentTest;
 use UnzerSDK\test\unit\DummyResource;
 use UnzerSDK\test\unit\Traits\TraitDummyCanRecur;
-use PHPUnit\Framework\MockObject\MockObject;
-use RuntimeException;
-use stdClass;
+use UnzerSDK\Unzer;
 
 class ResourceServiceTest extends BasePaymentTest
 {
@@ -96,6 +86,7 @@ public function gettersAndSettersShouldWorkProperly(): void
      * Verify send will call send on httpService.
      *
      * @test
+     *
      * @dataProvider sendShouldCallSendOnHttpServiceDP
      *
      * @param string $method
@@ -131,6 +122,7 @@ public function sendShouldCallSendOnHttpService(string $method, string $uri, boo
      * Verify getResourceIdFromUrl works correctly.
      *
      * @test
+     *
      * @dataProvider urlIdStringProvider
      *
      * @param string $expected
@@ -149,6 +141,7 @@ public function getResourceIdFromUrlShouldIdentifyAndReturnTheIdStringFromAGiven
      * Verify getResourceIdFromUrl throws exception if the id cannot be found.
      *
      * @test
+     *
      * @dataProvider failingUrlIdStringProvider
      *
      * @param mixed $uri
@@ -168,6 +161,7 @@ public function getResourceIdFromUrlShouldThrowExceptionIfTheIdCanNotBeFound($ur
      * Verify fetchResource calls fetch if its id is set and it has never been fetched before.
      *
      * @test
+     *
      * @dataProvider fetchResourceFetchCallDP
      *
      * @param $resource
@@ -252,6 +246,28 @@ public function updateShouldCallSendAndThenHandleResponseWithTheResponseData():
         $this->assertSame($testResource, $resourceServiceMock->updateResource($testResource));
     }
 
+    /**
+     * Verify patch method will call send method and call the resources handleResponse method with the response.
+     *
+     * @test
+     */
+    public function patchShouldCallSendAndThenHandleResponseWithTheResponseData(): void
+    {
+        $response = new stdClass();
+
+        /** @var Customer|MockObject $testResource */
+        $testResource = $this->getMockBuilder(Charge::class)->setMethods(['handleResponse'])->getMock();
+        /** @noinspection PhpParamsInspection */
+        $testResource->expects($this->once())->method('handleResponse')->with($response, HttpAdapterInterface::REQUEST_PATCH);
+
+        /** @var ResourceService|MockObject $resourceServiceMock */
+        $resourceServiceMock = $this->getMockBuilder(ResourceService::class)->setMethods(['send'])->disableOriginalConstructor()->getMock();
+        /** @noinspection PhpParamsInspection */
+        $resourceServiceMock->expects($this->once())->method('send')->with($testResource, HttpAdapterInterface::REQUEST_PATCH)->willReturn($response);
+
+        $this->assertSame($testResource, $resourceServiceMock->patchResource($testResource));
+    }
+
     /**
      * Verify update does not handle response with error.
      *
@@ -279,12 +295,12 @@ public function updateShouldNotHandleResponseWithError(): void
     public function deleteShouldCallSendAndThenSetTheResourceNull(): void
     {
         /** @var Customer|MockObject $testResource */
-        $testResource = $this->getMockBuilder(Customer::class)->getMock();
+        $testResource = $this->getMockBuilder(Customer::class)->setMethods(['getApVersion'])->getMock();
 
         /** @var ResourceService|MockObject $resourceServiceMock */
         $resourceServiceMock = $this->getMockBuilder(ResourceService::class)->setMethods(['send'])->disableOriginalConstructor()->getMock();
         /** @noinspection PhpParamsInspection */
-        $resourceServiceMock->expects($this->once())->method('send')->with($testResource, HttpAdapterInterface::REQUEST_DELETE)->willReturn(new stdClass());
+        $resourceServiceMock->expects($this->once())->method('send')->with($testResource, HttpAdapterInterface::REQUEST_DELETE, Unzer::API_VERSION)->willReturn(new stdClass());
 
         $this->assertNull($resourceServiceMock->deleteResource($testResource));
         $this->assertNull($testResource);
@@ -298,7 +314,7 @@ public function deleteShouldCallSendAndThenSetTheResourceNull(): void
     public function deleteShouldNotDeleteObjectOnResponseWithError(): void
     {
         /** @var Customer|MockObject $testResource */
-        $testResource = $this->getMockBuilder(Customer::class)->getMock();
+        $testResource = $this->getMockBuilder(Customer::class)->setMethods(['send'])->getMock();
 
         /** @var ResourceService|MockObject $resourceServiceMock */
         $resourceServiceMock = $this->getMockBuilder(ResourceService::class)->setMethods(['send'])->disableOriginalConstructor()->getMock();
@@ -343,6 +359,7 @@ public function fetchShouldCallSendWithGetUpdateFetchedAtAndCallHandleResponse()
      * Verify fetchResourceByUrl calls fetch for the desired resource.
      *
      * @test
+     *
      * @dataProvider fetchResourceByUrlShouldFetchTheDesiredResourceDP
      *
      * @param string $fetchMethod
@@ -363,6 +380,7 @@ public function fetchResourceByUrlShouldFetchTheDesiredResource($fetchMethod, $a
      * Verify fetchResourceByUrl calls fetch for the desired resource.
      *
      * @test
+     *
      * @dataProvider fetchResourceByUrlForAPaymentTypeShouldCallFetchPaymentTypeDP
      *
      * @param string $paymentTypeId
@@ -396,6 +414,7 @@ public function fetchResourceByUrlForAPaymentTypeShouldReturnNullIfTheTypeIsUnkn
      * Verify fetchPayment method will fetch the passed payment object.
      *
      * @test
+     *
      * @dataProvider fetchShouldCallFetchResourceDP
      *
      * @param string $fetchMethod
@@ -453,6 +472,7 @@ public function createPaymentTypeShouldSetUnzerObjectAndCallCreate(): void
      * Verify fetchPaymentType will throw exception if the id does not fit any type or is invalid.
      *
      * @test
+     *
      * @dataProvider paymentTypeIdProviderInvalid
      *
      * @param string $typeId
@@ -989,6 +1009,107 @@ public function updateBasketShouldCallUpdateAndReturnTheGivenBasket(): void
         $this->assertEquals($unzer, $basket->getUnzerObject());
     }
 
+    /**
+     * Verify fetchBasket will use the v2 endpoint end then the v1 endpoint if basket wasn't found initially.
+     *
+     * @test
+     */
+    public function fetchBasketShouldCallV1EnpointIfBasketWasNotFound(): void
+    {
+        $unzer = new Unzer('s-priv-123');
+        $basket = (new Basket())->setId('s-bsk-testbasket');
+
+        /** @var ResourceServiceInterface|MockObject $resourceServiceMock */
+        $resourceServiceMock = $this->getMockBuilder(ResourceService::class)
+            ->setConstructorArgs([$unzer])
+            ->setMethods(['fetchResource'])->getMock();
+
+        $resourceServiceMock->expects(self::exactly(2))
+            ->method('fetchResource')
+            ->withConsecutive([$basket, BasePaymentTest::API_VERSION_2], [$basket, Unzer::API_VERSION])
+            ->will($this->returnCallback(function ($basket, $version) {
+                if ($version === BasePaymentTest::API_VERSION_2) {
+                    throw new UnzerApiException(null, null, ApiResponseCodes::API_ERROR_BASKET_NOT_FOUND);
+                }
+                return $basket;
+            }));
+
+        $resourceServiceMock->fetchBasket($basket);
+    }
+
+    /**
+     * Verify fetchBasket will call FetchResource max two time, if the basket was not found.
+     * Exception should be thrown.
+     *
+     * @test
+     */
+    public function fetchBasketShouldCallFetchResourceMaxTwoTimes(): void
+    {
+        $unzer = new Unzer('s-priv-123');
+        $basket = (new Basket())->setId('s-bsk-testbasket');
+
+        /** @var ResourceServiceInterface|MockObject $resourceServiceMock */
+        $resourceServiceMock = $this->getMockBuilder(ResourceService::class)
+            ->setConstructorArgs([$unzer])
+            ->setMethods(['fetchResource'])->getMock();
+
+        $resourceServiceMock->expects(self::exactly(2))
+            ->method('fetchResource')
+            ->withConsecutive([$basket, BasePaymentTest::API_VERSION_2], [$basket, Unzer::API_VERSION])
+            ->willThrowException(new UnzerApiException(null, null, ApiResponseCodes::API_ERROR_BASKET_NOT_FOUND));
+
+        $this->expectException(UnzerApiException::class);
+        $resourceServiceMock->fetchBasket($basket);
+    }
+
+    /**
+     * Verify fetchBasket call fetchResource only once with v2 parameter, when basket was returned.
+     *
+     * @test
+     */
+    public function fetchBasketShouldCallFetchResourceOnlyOnceIfNoExceptionOccurs(): void
+    {
+        $unzer = new Unzer('s-priv-123');
+        $basket = (new Basket())->setId('s-bsk-testbasket');
+
+        /** @var ResourceServiceInterface|MockObject $resourceServiceMock */
+        $resourceServiceMock = $this->getMockBuilder(ResourceService::class)
+            ->setConstructorArgs([$unzer])
+            ->setMethods(['fetchResource'])->getMock();
+
+        $resourceServiceMock->expects(self::once())
+            ->method('fetchResource')
+            ->with($basket, BasePaymentTest::API_VERSION_2)
+            ->willReturn($basket);
+
+        $resourceServiceMock->fetchBasket($basket);
+    }
+
+    /**
+     * Verify fetchBasket will call fetchResource only once if Exception ist not "API_ERROR_BASKET_NOT_FOUND" exception.
+     * Exception should be thrown.
+     *
+     * @test
+     */
+    public function fetchBasketShouldNotCallFetchResourcheMethodIfAnyOtherExceptionIsThrown(): void
+    {
+        $unzer = new Unzer('s-priv-123');
+        $basket = (new Basket())->setId('s-bsk-testbasket');
+
+        /** @var ResourceServiceInterface|MockObject $resourceServiceMock */
+        $resourceServiceMock = $this->getMockBuilder(ResourceService::class)
+            ->setConstructorArgs([$unzer])
+            ->setMethods(['fetchResource'])->getMock();
+
+        $resourceServiceMock->expects(self::once())
+            ->method('fetchResource')
+            ->with($basket, BasePaymentTest::API_VERSION_2)
+            ->willThrowException(new UnzerApiException(null, null, ApiResponseCodes::API_ERROR_BASKET_ITEM_IMAGE_INVALID_URL));
+
+        $this->expectException(UnzerApiException::class);
+        $resourceServiceMock->fetchBasket($basket);
+    }
+
     //</editor-fold>
 
     //<editor-fold desc="Recurring">
@@ -996,6 +1117,7 @@ public function updateBasketShouldCallUpdateAndReturnTheGivenBasket(): void
     /**
      * Verify createRecurring calls fetch for the payment type if it is given the id.
      *
+     *
      * @test
      */
     public function createRecurringShouldFetchThePaymentTypeById(): void
@@ -1018,6 +1140,7 @@ public function createRecurringShouldFetchThePaymentTypeById(): void
     /**
      * Verify createRecurring does not call fetch for the payment type if it is given the object itself.
      *
+     *
      * @test
      */
     public function createRecurringShouldNotFetchThePaymentTypeByObject(): void
@@ -1038,6 +1161,8 @@ public function createRecurringShouldNotFetchThePaymentTypeByObject(): void
     /**
      * Verify createRecurring throws exception if it is called with a payment type which does not support recurring payment.
      *
+     * @deprecated since 1.2.1.0 Get removed with `activateRecurring` method.
+     *
      * @test
      */
     public function createRecurringShouldThrowExceptionWhenRecurringPaymentIsNotSupportedByType(): void
@@ -1109,7 +1234,6 @@ public function paymentTypeIdProviderInvalid(): array
             ['p-crd12345678abc'],
             ['pcrd12345678abc'],
             ['myId'],
-            [null],
             ['']
         ];
     }
@@ -1126,11 +1250,14 @@ public function fetchResourceByUrlShouldFetchTheDesiredResourceDP(): array
             'Charge'        => ['fetchChargeById', ['s-pay-100798', 's-chg-1'], 'https://api.unzer.com/v1/payments/s-pay-100798/charges/s-chg-1/'],
             'Shipment'      => ['fetchShipment', ['s-pay-100801', 's-shp-1'], 'https://api.unzer.com/v1/payments/s-pay-100801/shipments/s-shp-1/'],
             'Refund'        => ['fetchRefundById', ['s-pay-100802', 's-chg-1', 's-cnl-1'], 'https://api.unzer.com/v1/payments/s-pay-100802/charges/s-chg-1/cancels/s-cnl-1/'],
+            'Payment Refund' => ['fetchPaymentRefund', ['s-pay-100802', 's-cnl-1'], 'https://api.unzer.com/v1/payments/s-pay-100802/charges/cancels/s-cnl-1/'],
             'Reversal'      => ['fetchReversal', ['s-pay-100803', 's-cnl-1'], 'https://api.unzer.com/v1/payments/s-pay-100803/authorize/s-aut-1/cancels/s-cnl-1/'],
+            'Payment Reversal' => ['fetchPaymentReversal', ['s-pay-100803', 's-cnl-1'], 'https://api.unzer.com/v1/payments/s-pay-100803/authorize/cancels/s-cnl-1/'],
             'Payment'       => ['fetchPayment', ['s-pay-100801'], 'https://api.unzer.com/v1/payments/s-pay-100801'],
             'Metadata'      => ['fetchMetadata', ['s-mtd-6glqv9axjpnc'], 'https://api.unzer.com/v1/metadata/s-mtd-6glqv9axjpnc/'],
             'Customer'      => ['fetchCustomer', ['s-cst-50c14d49e2fe'], 'https://api.unzer.com/v1/customers/s-cst-50c14d49e2fe'],
-            'Basket'        => ['fetchBasket', ['s-bsk-1254'], 'https://api.unzer.com/v1/baskets/s-bsk-1254/'],
+            'v1Basket'        => ['fetchBasket', ['s-bsk-1254'], 'https://api.unzer.com/v1/baskets/s-bsk-1254/'],
+            'v2Basket'        => ['fetchBasket', ['s-bsk-1254'], 'https://api.unzer.com/v2/baskets/s-bsk-1254/'],
             'Payout'        => ['fetchPayout', ['s-pay-100746'], 'https://api.unzer.com/v1/payments/s-pay-100746/payout/s-out-1/']
         ];
     }
@@ -1156,8 +1283,11 @@ public function fetchResourceByUrlForAPaymentTypeShouldCallFetchPaymentTypeDP():
             'INVOICE_GUARANTEED'           => ['s-ivg-xen2ybcovn56', 'https://api.unzer.com/v1/types/invoice-guaranteed/s-ivg-xen2ybcovn56/'],
             'INVOICE_SECURED'              => ['s-ivs-xen2ybcovn56', 'https://api.unzer.com/v1/types/invoice-secured/s-ivs-xen2ybcovn56/'],
             'Installment_SECURED'          => ['s-ins-xen2ybcovn56', 'https://api.unzer.com/v1/types/installment-secured/s-ins-xen2ybcovn56/'],
+            'PAYLATER_INVOICE'             => ['s-piv-xen2ybcovn56', 'https://api.unzer.com/v1/types/paylater-invoice/s-piv-xen2ybcovn56/'],
             'PAYPAL'                       => ['s-ppl-xen2ybcovn56', 'https://api.unzer.com/v1/types/paypal/s-ppl-xen2ybcovn56/'],
             'PIS'                          => ['s-pis-xen2ybcovn56', 'https://api.unzer.com/v1/types/pis/s-pis-xen2ybcovn56/'],
+            'POST_FINANCE_EFINANCE'        => ['s-pfe-xen2ybcovn56', 'https://api.unzer.com/v1/types/pfe/s-pfe-xen2ybcovn56/'],
+            'POST_FINANCE_CARD'            => ['s-pfc-xen2ybcovn56', 'https://api.unzer.com/v1/types/pfc/s-pfc-xen2ybcovn56/'],
             'PREPAYMENT'                   => ['s-ppy-xen2ybcovn56', 'https://api.unzer.com/v1/types/prepayment/s-ppy-xen2ybcovn56/'],
             'PRZELEWY24'                   => ['s-p24-xen2ybcovn56', 'https://api.unzer.com/v1/types/przelewy24/s-p24-xen2ybcovn56/'],
             'SEPA_DIRECT_DEBIT'            => ['s-sdd-xen2ybcovn56', 'https://api.unzer.com/v1/types/direct-debit/s-sdd-xen2ybcovn56/'],
@@ -1174,6 +1304,7 @@ public function sendShouldCallSendOnHttpServiceDP(): array
     {
         return [
             HttpAdapterInterface::REQUEST_GET    => [HttpAdapterInterface::REQUEST_GET, '/my/get/uri', true],
+            HttpAdapterInterface::REQUEST_PATCH   => [HttpAdapterInterface::REQUEST_PATCH, '/my/patch/uri', true],
             HttpAdapterInterface::REQUEST_POST   => [HttpAdapterInterface::REQUEST_POST, '/my/post/uri', false],
             HttpAdapterInterface::REQUEST_PUT    => [HttpAdapterInterface::REQUEST_PUT, '/my/put/uri', true],
             HttpAdapterInterface::REQUEST_DELETE => [HttpAdapterInterface::REQUEST_DELETE, '/my/delete/uri', true],
@@ -1223,12 +1354,15 @@ public function fetchShouldCallFetchResourceDP(): array
             'fetchBasket by obj' => ['fetchBasket', [(new Basket())->setId('myBasketId')], $fetchBasketCB],
             'PaymentType Card sandbox' => ['fetchPaymentType', ['s-crd-12345678'], $getPaymentTypeCB(Card::class)],
             'PaymentType Giropay sandbox' => ['fetchPaymentType', ['s-gro-12345678'], $getPaymentTypeCB(Giropay::class)],
+            'PaymentType Google Pay sandbox' => ['fetchPaymentType', ['s-gop-12345678'], $getPaymentTypeCB(Googlepay::class)],
             'PaymentType Ideal sandbox' => ['fetchPaymentType', ['s-idl-12345678'], $getPaymentTypeCB(Ideal::class)],
             'PaymentType Invoice sandbox' => ['fetchPaymentType', ['s-ivc-12345678'], $getPaymentTypeCB(Invoice::class)],
             'PaymentType InvoiceGuaranteed sandbox' => ['fetchPaymentType', ['s-ivg-12345678'], $getPaymentTypeCB(InvoiceSecured::class)],
             'PaymentType InvoiceSecured sandbox' => ['fetchPaymentType', ['s-ivs-12345678'], $getPaymentTypeCB(InvoiceSecured::class)],
             'PaymentType Invoie factoring sandbox' => ['fetchPaymentType', ['s-ivf-12345678'], $getPaymentTypeCB(InvoiceSecured::class)],
+            'PaymentType Klarna' => ['fetchPaymentType', ['s-kla-12345678'], $getPaymentTypeCB(Klarna::class)],
             'PaymentType Paypal sandbox' => ['fetchPaymentType', ['s-ppl-12345678'], $getPaymentTypeCB(Paypal::class)],
+            'PaymentType Paylater-Invoice sandbox' => ['fetchPaymentType', ['s-piv-12345678'], $getPaymentTypeCB(PaylaterInvoice::class)],
             'PaymentType Prepayment sandbox' => ['fetchPaymentType', ['s-ppy-12345678'], $getPaymentTypeCB(Prepayment::class)],
             'PaymentType Przelewy24 sandbox' => ['fetchPaymentType', ['s-p24-12345678'], $getPaymentTypeCB(Przelewy24::class)],
             'PaymentType SepaDirectDebit sandbox' => ['fetchPaymentType', ['s-sdd-12345678'], $getPaymentTypeCB(SepaDirectDebit::class)],
@@ -1236,31 +1370,36 @@ public function fetchShouldCallFetchResourceDP(): array
             'PaymentType SepaDirectDebitSecured sandbox' => ['fetchPaymentType', ['s-dds-12345678'], $getPaymentTypeCB(SepaDirectDebitSecured::class)],
             'PaymentType Sofort sandbox' => ['fetchPaymentType', ['s-sft-12345678'], $getPaymentTypeCB(Sofort::class)],
             'PaymentType PIS sandbox' => ['fetchPaymentType', ['s-pis-12345678'], $getPaymentTypeCB(PIS::class)],
+            'PaymentType PFC sandbox' => ['fetchPaymentType', ['s-pfc-12345678'], $getPaymentTypeCB(PostFinanceCard::class)],
+            'PaymentType PFE sandbox' => ['fetchPaymentType', ['s-pfe-12345678'], $getPaymentTypeCB(PostFinanceEfinance::class)],
             'PaymentType EPS sandbox' => ['fetchPaymentType', ['s-eps-12345678'], $getPaymentTypeCB(EPS::class)],
             'PaymentType Alipay sandbox' => ['fetchPaymentType', ['s-ali-12345678'], $getPaymentTypeCB(Alipay::class)],
             'PaymentType Wechatpay sandbox' => ['fetchPaymentType', ['s-wcp-12345678'], $getPaymentTypeCB(Wechatpay::class)],
             'PaymentType HirePurchaseDirectDebit sandbox' => ['fetchPaymentType', ['s-hdd-12345678'], $getPaymentTypeCB(InstallmentSecured::class)],
             'PaymentType InstallmentSecured sandbox' => ['fetchPaymentType', ['s-ins-12345678'], $getPaymentTypeCB(InstallmentSecured::class)],
             'PaymentType Bancontact sandbox' => ['fetchPaymentType', ['s-bct-12345678'], $getPaymentTypeCB(Bancontact::class)],
+            'PaymentType Alipay production' => ['fetchPaymentType', ['p-ali-12345678'], $getPaymentTypeCB(Alipay::class)],
+            'PaymentType Bancontact production' => ['fetchPaymentType', ['p-bct-12345678'], $getPaymentTypeCB(Bancontact::class)],
             'PaymentType Card production' => ['fetchPaymentType', ['p-crd-12345678'], $getPaymentTypeCB(Card::class)],
+            'PaymentType EPS production' => ['fetchPaymentType', ['p-eps-12345678'], $getPaymentTypeCB(EPS::class)],
             'PaymentType Giropay production' => ['fetchPaymentType', ['p-gro-12345678'], $getPaymentTypeCB(Giropay::class)],
+            'PaymentType HirePurchaseDirectDebit production' => ['fetchPaymentType', ['p-hdd-12345678'], $getPaymentTypeCB(InstallmentSecured::class)],
             'PaymentType Ideal production' => ['fetchPaymentType', ['p-idl-12345678'], $getPaymentTypeCB(Ideal::class)],
+            'PaymentType InstallmentSecured production' => ['fetchPaymentType', ['p-hdd-12345678'], $getPaymentTypeCB(InstallmentSecured::class)],
+            'PaymentType Invoice factoring production' => ['fetchPaymentType', ['p-ivf-12345678'], $getPaymentTypeCB(InvoiceSecured::class)],
             'PaymentType Invoice production' => ['fetchPaymentType', ['p-ivc-12345678'], $getPaymentTypeCB(Invoice::class)],
             'PaymentType InvoiceGuaranteed production' => ['fetchPaymentType', ['p-ivg-12345678'], $getPaymentTypeCB(InvoiceSecured::class)],
-            'PaymentType Invoice factoring production' => ['fetchPaymentType', ['p-ivf-12345678'], $getPaymentTypeCB(InvoiceSecured::class)],
+            'PaymentType Paylater-Invoice production' => ['fetchPaymentType', ['p-piv-12345678'], $getPaymentTypeCB(PaylaterInvoice::class)],
             'PaymentType Paypal production' => ['fetchPaymentType', ['p-ppl-12345678'], $getPaymentTypeCB(Paypal::class)],
+            'PaymentType PFC production' => ['fetchPaymentType', ['p-pfc-12345678'], $getPaymentTypeCB(PostFinanceCard::class)],
+            'PaymentType PFE production' => ['fetchPaymentType', ['p-pfe-12345678'], $getPaymentTypeCB(PostFinanceEfinance::class)],
             'PaymentType Prepayment production' => ['fetchPaymentType', ['p-ppy-12345678'], $getPaymentTypeCB(Prepayment::class)],
             'PaymentType Przelewy24 production' => ['fetchPaymentType', ['p-p24-12345678'], $getPaymentTypeCB(Przelewy24::class)],
             'PaymentType SepaDirectDebit production' => ['fetchPaymentType', ['p-sdd-12345678'], $getPaymentTypeCB(SepaDirectDebit::class)],
             'PaymentType SepaDirectDebitGuaranteed production' => ['fetchPaymentType', ['p-ddg-12345678'], $getPaymentTypeCB(SepaDirectDebitSecured::class)],
             'PaymentType SepaDirectDebitSecured production' => ['fetchPaymentType', ['p-dds-12345678'], $getPaymentTypeCB(SepaDirectDebitSecured::class)],
             'PaymentType Sofort production' => ['fetchPaymentType', ['p-sft-12345678'], $getPaymentTypeCB(Sofort::class)],
-            'PaymentType EPS production' => ['fetchPaymentType', ['p-eps-12345678'], $getPaymentTypeCB(EPS::class)],
-            'PaymentType Alipay production' => ['fetchPaymentType', ['p-ali-12345678'], $getPaymentTypeCB(Alipay::class)],
             'PaymentType Wechatpay production' => ['fetchPaymentType', ['p-wcp-12345678'], $getPaymentTypeCB(Wechatpay::class)],
-            'PaymentType HirePurchaseDirectDebit production' => ['fetchPaymentType', ['p-hdd-12345678'], $getPaymentTypeCB(InstallmentSecured::class)],
-            'PaymentType InstallmentSecured production' => ['fetchPaymentType', ['p-hdd-12345678'], $getPaymentTypeCB(InstallmentSecured::class)],
-            'PaymentType Bancontact production' => ['fetchPaymentType', ['p-bct-12345678'], $getPaymentTypeCB(Bancontact::class)],
         ];
     }
 
diff --git a/vendor/unzerdev/php-sdk/test/unit/Services/WebhooksServiceTest.php b/vendor/unzerdev/php-sdk/test/unit/Services/WebhooksServiceTest.php
index 975a056..b21f940 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Services/WebhooksServiceTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Services/WebhooksServiceTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of the webhook service.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Services;
 
 use UnzerSDK\Unzer;
diff --git a/vendor/unzerdev/php-sdk/test/unit/Traits/CanAuthorizeTest.php b/vendor/unzerdev/php-sdk/test/unit/Traits/CanAuthorizeTest.php
index c326915..5597d71 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Traits/CanAuthorizeTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Traits/CanAuthorizeTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of the CanAuthorize trait.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Traits;
 
 use UnzerSDK\Unzer;
diff --git a/vendor/unzerdev/php-sdk/test/unit/Traits/CanAuthorizeWithCustomerTest.php b/vendor/unzerdev/php-sdk/test/unit/Traits/CanAuthorizeWithCustomerTest.php
index fade082..c5f46e4 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Traits/CanAuthorizeWithCustomerTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Traits/CanAuthorizeWithCustomerTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of the CanAuthorizeWithCustomer trait.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Traits;
 
 use UnzerSDK\Unzer;
diff --git a/vendor/unzerdev/php-sdk/test/unit/Traits/CanDirectChargeTest.php b/vendor/unzerdev/php-sdk/test/unit/Traits/CanDirectChargeTest.php
index 5e6d0a7..4c40330 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Traits/CanDirectChargeTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Traits/CanDirectChargeTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of the CanDirectCharge trait.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Traits;
 
 use UnzerSDK\Unzer;
diff --git a/vendor/unzerdev/php-sdk/test/unit/Traits/CanDirectChargeWithCustomerTest.php b/vendor/unzerdev/php-sdk/test/unit/Traits/CanDirectChargeWithCustomerTest.php
index 9a6bbbb..5cd94ea 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Traits/CanDirectChargeWithCustomerTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Traits/CanDirectChargeWithCustomerTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of the CanDirectCharge trait.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Traits;
 
 use UnzerSDK\Unzer;
diff --git a/vendor/unzerdev/php-sdk/test/unit/Traits/CanPayoutTest.php b/vendor/unzerdev/php-sdk/test/unit/Traits/CanPayoutTest.php
index 32f335e..f026fe5 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Traits/CanPayoutTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Traits/CanPayoutTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of the CanPayout trait.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Traits;
 
 use UnzerSDK\Unzer;
diff --git a/vendor/unzerdev/php-sdk/test/unit/Traits/CanPayoutWithCustomerTest.php b/vendor/unzerdev/php-sdk/test/unit/Traits/CanPayoutWithCustomerTest.php
index 7bf318b..83cb619 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Traits/CanPayoutWithCustomerTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Traits/CanPayoutWithCustomerTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of the CanPayoutWithCustomer trait.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Traits;
 
 use UnzerSDK\Unzer;
diff --git a/vendor/unzerdev/php-sdk/test/unit/Traits/CanRecurTest.php b/vendor/unzerdev/php-sdk/test/unit/Traits/CanRecurTest.php
index cb0ddda..2d4738a 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Traits/CanRecurTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Traits/CanRecurTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of the CanRecur trait.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Traits;
 
 use UnzerSDK\Unzer;
diff --git a/vendor/unzerdev/php-sdk/test/unit/Traits/HasAdditionalTransactionDataTest.php b/vendor/unzerdev/php-sdk/test/unit/Traits/HasAdditionalTransactionDataTest.php
new file mode 100644
index 0000000..2a926e8
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/test/unit/Traits/HasAdditionalTransactionDataTest.php
@@ -0,0 +1,143 @@
+<?php
+/*
+ *  Tests for additional transaction data trait
+ *
+ *  @link  https://docs.unzer.com/
+ *
+ */
+
+/** @noinspection PhpUnhandledExceptionInspection */
+/** @noinspection PhpDocMissingThrowsInspection */
+
+namespace UnzerSDK\test\unit\Traits;
+
+use UnzerSDK\Resources\EmbeddedResources\CardTransactionData;
+use UnzerSDK\Resources\EmbeddedResources\RiskData;
+use UnzerSDK\Resources\EmbeddedResources\ShippingData;
+use UnzerSDK\Resources\PaymentTypes\Paypal;
+use UnzerSDK\test\BasePaymentTest;
+
+class HasAdditionalTransactionDataTest extends BasePaymentTest
+{
+    /**
+     * Verify setters and getters.
+     *
+     * @test
+     */
+    public function gettersAndSettersShouldWorkProperly(): void
+    {
+        $dummy = new TraitDummyHasAdditionalTransactionData();
+
+        $this->assertNull($dummy->getShipping());
+        $this->assertNull($dummy->getRiskData());
+        $this->assertNull($dummy->getPrivacyPolicyUrl());
+        $this->assertNull($dummy->getTermsAndConditionUrl());
+        $this->assertNull($dummy->getCheckoutType());
+
+        $shipping = (new ShippingData())
+            ->setDeliveryService('deliveryService')
+            ->setDeliveryTrackingId('deliveryTrackingId')
+            ->setReturnTrackingId('returnTrackingId');
+
+        $riskData = (new RiskData())
+            ->setThreatMetrixId('threatMetrixId');
+
+        $privacyPolicyUrl = 'privacyPolicyUrl';
+        $termsAndConditionUrl = 'termsAndConditionUrl';
+        $dummy->setShipping($shipping)
+            ->setRiskData($riskData)
+            ->setPrivacyPolicyUrl($privacyPolicyUrl)
+            ->setCheckoutType('express', new Paypal())
+            ->setTermsAndConditionUrl($termsAndConditionUrl);
+
+        $this->assertNotNull($dummy->getShipping());
+        $this->assertNotNull($dummy->getRiskData());
+        $this->assertNotNull($dummy->getPrivacyPolicyUrl());
+        $this->assertNotNull($dummy->getTermsAndConditionUrl());
+        $this->assertNotNull($dummy->getCheckoutType());
+
+        $this->assertEquals($shipping, $dummy->getShipping());
+        $this->assertEquals($riskData, $dummy->getRiskData());
+        $this->assertEquals($privacyPolicyUrl, $dummy->getPrivacyPolicyUrl());
+        $this->assertEquals($termsAndConditionUrl, $dummy->getTermsAndConditionUrl());
+    }
+
+    /**
+     * Setting and getting card data should work as expected.
+     *
+     * @test
+     */
+    public function setAndGetCardData(): void
+    {
+        $dummy = new TraitDummyHasAdditionalTransactionData();
+        $this->assertNull($dummy->getCardTransactionData());
+
+        $cardTransactionData = (new CardTransactionData())
+            ->setRecurrenceType('recurrenceType')
+            ->setExemptionType('exemptionType');
+
+        $dummy->setCardTransactionData($cardTransactionData);
+
+        $cardData = $dummy->getCardTransactionData();
+        $this->assertNotNull($cardData);
+        $this->assertEquals('exemptionType', $cardData->getExemptionType());
+        $this->assertNull($cardData->getLiability());
+        $this->assertEquals('recurrenceType', $cardData->getRecurrenceType());
+    }
+
+    /**
+     * CardData should be exposed correctly.
+     *
+     * @test
+     */
+    public function exposeCardDataAsExpected(): void
+    {
+        $dummy = new TraitDummyHasAdditionalTransactionData();
+        $this->assertNull($dummy->getCardTransactionData());
+
+        $cardTransactionData = (new CardTransactionData())
+            ->setRecurrenceType('recurrenceType')
+            ->setExemptionType('exemptionType');
+
+        $dummy->setCardTransactionData($cardTransactionData);
+
+        $exposedResource = $dummy->expose();
+        $this->assertNotNull($exposedResource['additionalTransactionData']);
+        $additionalTransactionData = $exposedResource['additionalTransactionData'];
+
+        $this->assertFalse(isset($additionalTransactionData->card['liability']));
+        $this->assertEquals('recurrenceType', $additionalTransactionData->card['recurrenceType']);
+        $this->assertEquals('exemptionType', $additionalTransactionData->card['exemptionType']);
+    }
+
+    /**
+     * Verify checkoutType can be set via typeId correctly.
+     *
+     * @test
+     */
+    public function checkoutTypeCanBeSetViaTypeId(): void
+    {
+        $dummy = new TraitDummyHasAdditionalTransactionData();
+        $dummy->setCheckoutType('checkoutType', 's-ppl-xyz');
+
+        $additionalTransactionData = $dummy->getAdditionalTransactionData();
+        $this->assertTrue(property_exists($additionalTransactionData, 'paypal'));
+        $this->assertEquals($additionalTransactionData->paypal->checkoutType, 'checkoutType');
+    }
+
+    /**
+     * @test
+     */
+    public function getterShouldReturnNullIfAdittionalTransactionDataDoNOtContainProperObject()
+    {
+        $dummy = new TraitDummyHasAdditionalTransactionData();
+        $dummy->addAdditionalTransactionData('shipping', 'This is not a shippingObject!');
+        $dummy->addAdditionalTransactionData('riskData', 'This is not a riskDataObject!');
+
+        $this->assertEquals('This is not a shippingObject!', $dummy->getAdditionalTransactionData()->shipping);
+        $this->assertEquals('This is not a riskDataObject!', $dummy->getAdditionalTransactionData()->riskData);
+
+        $this->assertNull($dummy->getShipping());
+        $this->assertNull($dummy->getRiskData());
+    }
+}
diff --git a/vendor/unzerdev/php-sdk/test/unit/Traits/HasCancellationsTest.php b/vendor/unzerdev/php-sdk/test/unit/Traits/HasCancellationsTest.php
index 459715e..36b76a2 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Traits/HasCancellationsTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Traits/HasCancellationsTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of the HasCancellations trait.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Traits;
 
 use UnzerSDK\Resources\TransactionTypes\Authorization;
diff --git a/vendor/unzerdev/php-sdk/test/unit/Traits/HasInvoiceIdTest.php b/vendor/unzerdev/php-sdk/test/unit/Traits/HasInvoiceIdTest.php
index a184151..ff0a489 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Traits/HasInvoiceIdTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Traits/HasInvoiceIdTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of the HasInvoiceId trait.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Traits;
 
 use UnzerSDK\test\BasePaymentTest;
diff --git a/vendor/unzerdev/php-sdk/test/unit/Traits/HasPaymentStateTest.php b/vendor/unzerdev/php-sdk/test/unit/Traits/HasPaymentStateTest.php
index ad3b086..1a71580 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Traits/HasPaymentStateTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Traits/HasPaymentStateTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of the HasPaymentState trait.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Traits;
 
 use UnzerSDK\Constants\PaymentState;
@@ -35,6 +20,7 @@ class HasPaymentStateTest extends BasePaymentTest
      * Verify that getters and setters work properly.
      *
      * @test
+     *
      * @dataProvider gettersAndSettersShouldWorkProperlyDP
      *
      * @param mixed $state
@@ -45,6 +31,7 @@ class HasPaymentStateTest extends BasePaymentTest
      * @param mixed $partlyPaid
      * @param mixed $paymentReview
      * @param mixed $chargeBack
+     * @param mixed $create
      */
     public function gettersAndSettersShouldWorkProperly(
         $state,
@@ -54,7 +41,8 @@ public function gettersAndSettersShouldWorkProperly(
         $canceled,
         $partlyPaid,
         $paymentReview,
-        $chargeBack
+        $chargeBack,
+        $create
     ): void {
         $traitDummy = new TraitDummyHasCancellationsHasPaymentState();
         $this->assertEquals(PaymentState::STATE_PENDING, $traitDummy->getState());
@@ -65,6 +53,7 @@ public function gettersAndSettersShouldWorkProperly(
         $this->assertFalse($traitDummy->isPartlyPaid());
         $this->assertFalse($traitDummy->isPaymentReview());
         $this->assertFalse($traitDummy->isChargeBack());
+        $this->assertFalse($traitDummy->isCreate());
 
         $traitDummy->handleResponse((object)['state' => $state]);
         $this->assertEquals($state, $traitDummy->getState());
@@ -75,6 +64,7 @@ public function gettersAndSettersShouldWorkProperly(
         $this->assertEquals($partlyPaid, $traitDummy->isPartlyPaid());
         $this->assertEquals($paymentReview, $traitDummy->isPaymentReview());
         $this->assertEquals($chargeBack, $traitDummy->isChargeBack());
+        $this->assertEquals($create, $traitDummy->isCreate());
     }
 
     //<editor-fold desc="Data providers">
@@ -95,6 +85,7 @@ public function gettersAndSettersShouldWorkProperlyDP(): array
                 false,
                 false,
                 false,
+                false,
                 false
             ],
             'completed'      => [
@@ -105,6 +96,7 @@ public function gettersAndSettersShouldWorkProperlyDP(): array
                 false,
                 false,
                 false,
+                false,
                 false
             ],
             'canceled'       => [
@@ -115,6 +107,7 @@ public function gettersAndSettersShouldWorkProperlyDP(): array
                 true,
                 false,
                 false,
+                false,
                 false
             ],
             'partly_paid'    => [
@@ -125,6 +118,7 @@ public function gettersAndSettersShouldWorkProperlyDP(): array
                 false,
                 true,
                 false,
+                false,
                 false
             ],
             'payment_review' => [
@@ -135,6 +129,7 @@ public function gettersAndSettersShouldWorkProperlyDP(): array
                 false,
                 false,
                 true,
+                false,
                 false
             ],
             'chargeback'     => [
@@ -145,6 +140,18 @@ public function gettersAndSettersShouldWorkProperlyDP(): array
                 false,
                 false,
                 false,
+                true,
+                false
+            ],
+            'create'     => [
+                PaymentState::STATE_CREATE,
+                PaymentState::STATE_NAME_CREATE,
+                false,
+                false,
+                false,
+                false,
+                false,
+                false,
                 true
             ]
         ];
diff --git a/vendor/unzerdev/php-sdk/test/unit/Traits/HasRecurrenceTypeTest.php b/vendor/unzerdev/php-sdk/test/unit/Traits/HasRecurrenceTypeTest.php
index 526b0f1..f2044f2 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Traits/HasRecurrenceTypeTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Traits/HasRecurrenceTypeTest.php
@@ -1,39 +1,19 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of the HasRecurrenceType trait.
  *
- * Copyright (C) 2021 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  David Owusu <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Traits;
 
-use RuntimeException;
 use UnzerSDK\Constants\RecurrenceTypes;
 use UnzerSDK\Resources\Payment;
-use UnzerSDK\Resources\PaymentTypes\BasePaymentType;
 use UnzerSDK\Resources\PaymentTypes\Card;
-use UnzerSDK\Resources\PaymentTypes\Paypal;
-use UnzerSDK\Resources\PaymentTypes\SepaDirectDebit;
-use UnzerSDK\Resources\PaymentTypes\Sofort;
 use UnzerSDK\Resources\Recurring;
 use UnzerSDK\Resources\TransactionTypes\Charge;
 use UnzerSDK\test\BasePaymentTest;
@@ -63,8 +43,8 @@ public function hasRecurrenceTypeGettersAndSettersShouldWorkProperly(): void
 
         // Check correct data structure.
         $this->assertNotNull($charge->getAdditionalTransactionData());
-        $this->assertObjectHasAttribute('card', $charge->getAdditionalTransactionData());
-        $this->assertObjectHasAttribute('recurrenceType', $charge->getAdditionalTransactionData()->card);
+        $this->assertTrue(property_exists($charge->getAdditionalTransactionData(), 'card'));
+        $this->assertTrue(property_exists($charge->getAdditionalTransactionData()->card, 'recurrenceType'));
 
         // Recurrence type can be updated correctly.
         $this->assertEquals('oneclick', $charge->getRecurrenceType());
@@ -93,7 +73,7 @@ public function recurrenceTypeShouldBeExposedProperly(): void
 
         $charge->setRecurrenceType(RecurrenceTypes::ONE_CLICK);
         $exposedTransaction = $charge->expose();
-        $this->assertEquals('oneclick', $exposedTransaction['additionalTransactionData']->card->recurrenceType);
+        $this->assertEquals('oneclick', $exposedTransaction['additionalTransactionData']->card['recurrenceType']);
         $this->assertStringContainsString(
             '"additionalTransactionData":{"card":{"recurrenceType":"oneclick"}}',
             $charge->jsonSerialize()
@@ -132,30 +112,6 @@ public function responseShouldBeHandledProperlyWithRecurrenceType(): void
         );
     }
 
-    /**
-     * The object containing recurrenceType should named according to the current payment Type.
-     *
-     * @test
-     *
-     * @dataProvider recurrenceTypeShouldConsiderPaymentTypeDP
-     *
-     * @param $paymentType
-     * @param mixed $methodName
-     *
-     * @throws \UnzerSDK\Exceptions\UnzerApiException
-     */
-    public function recurrenceTypeShouldConsiderPaymentType(BasePaymentType $paymentType, $methodName): void
-    {
-        $unzerObj    = new Unzer('s-priv-123345');
-        $paymentType->setId('123');
-        $payment         = new Payment();
-        $payment->setParentResource($unzerObj)->setPaymentType($paymentType);
-        $charge          = (new Charge())->setPayment($payment);
-        $this->assertNull($charge->getAdditionalTransactionData());
-        $charge->setRecurrenceType(RecurrenceTypes::ONE_CLICK);
-        $this->assertObjectHasAttribute($methodName, $charge->getAdditionalTransactionData());
-    }
-
     /**
      * recurrence type should be set properly for recurring.
      *
@@ -169,32 +125,4 @@ public function recurrenceTypeShouldBeSetProperlyForRecurring()
 
         $this->assertEquals('scheduled', $recurring->getRecurrenceType());
     }
-
-    /**
-     * recurrence type should be set properly for recurring.
-     *
-     * @test
-     */
-    public function settingRecurrenceTypeShouldTrowExceptionIfTypeIsNotProvidedForRecurring(): void
-    {
-        $recurring = new Recurring('typeId', 'returnUrl');
-
-        $this->expectException(RuntimeException::class);
-        $this->expectExceptionMessage('Payment type can not be determined. Set it first or provide it via parameter $paymentType.');
-
-        $recurring->setRecurrenceType(RecurrenceTypes::SCHEDULED);
-    }
-
-    /** Provides payment types and expected key name that should be used to set the recurrence type.
-     * @return array[]
-     */
-    public function recurrenceTypeShouldConsiderPaymentTypeDP(): array
-    {
-        return [
-            'card' => [new Card(null, null), 'card'],
-            'sofort' => [new Sofort(), 'sofort'],
-            'sepa-direct-debit' => [new SepaDirectDebit(null), 'sepa-direct-debit'],
-            'paypal' => [new Paypal(), 'paypal']
-        ];
-    }
 }
diff --git a/vendor/unzerdev/php-sdk/test/unit/Traits/TraitDummyCanRecur.php b/vendor/unzerdev/php-sdk/test/unit/Traits/TraitDummyCanRecur.php
index fb61927..af8dc50 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Traits/TraitDummyCanRecur.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Traits/TraitDummyCanRecur.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines a dummy implementing CanRecur trait.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Traits;
 
 use UnzerSDK\Resources\PaymentTypes\BasePaymentType;
diff --git a/vendor/unzerdev/php-sdk/test/unit/Traits/TraitDummyCanRecurNonResource.php b/vendor/unzerdev/php-sdk/test/unit/Traits/TraitDummyCanRecurNonResource.php
index 05676bf..6f887e8 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Traits/TraitDummyCanRecurNonResource.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Traits/TraitDummyCanRecurNonResource.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines a dummy implementing CanRecur trait.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Traits;
 
 use UnzerSDK\Traits\CanRecur;
diff --git a/vendor/unzerdev/php-sdk/test/unit/Traits/TraitDummyHasAdditionalTransactionData.php b/vendor/unzerdev/php-sdk/test/unit/Traits/TraitDummyHasAdditionalTransactionData.php
new file mode 100644
index 0000000..7af7c01
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/test/unit/Traits/TraitDummyHasAdditionalTransactionData.php
@@ -0,0 +1,20 @@
+<?php
+/*
+ *  Dummy class for AdditionalTransactionData trait.
+ *
+ *  @link  https://docs.unzer.com/
+ *
+ */
+
+/** @noinspection PhpUnhandledExceptionInspection */
+/** @noinspection PhpDocMissingThrowsInspection */
+
+namespace UnzerSDK\test\unit\Traits;
+
+use UnzerSDK\Resources\AbstractUnzerResource;
+use UnzerSDK\Traits\HasAdditionalTransactionData;
+
+class TraitDummyHasAdditionalTransactionData extends AbstractUnzerResource
+{
+    use HasAdditionalTransactionData;
+}
diff --git a/vendor/unzerdev/php-sdk/test/unit/Traits/TraitDummyHasCancellationsHasPaymentState.php b/vendor/unzerdev/php-sdk/test/unit/Traits/TraitDummyHasCancellationsHasPaymentState.php
index 562292d..00cc9a9 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Traits/TraitDummyHasCancellationsHasPaymentState.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Traits/TraitDummyHasCancellationsHasPaymentState.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines a dummy implementing HasCancellations and HasPaymentState traits.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Traits;
 
 use UnzerSDK\Resources\AbstractUnzerResource;
diff --git a/vendor/unzerdev/php-sdk/test/unit/Traits/TraitDummyHasInvoiceId.php b/vendor/unzerdev/php-sdk/test/unit/Traits/TraitDummyHasInvoiceId.php
index 149036b..2b11875 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Traits/TraitDummyHasInvoiceId.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Traits/TraitDummyHasInvoiceId.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines a dummy implementing HasInvoiceId traits.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Traits;
 
 use UnzerSDK\Traits\HasInvoiceId;
diff --git a/vendor/unzerdev/php-sdk/test/unit/Traits/TraitDummyWithCustomerWithParentIF.php b/vendor/unzerdev/php-sdk/test/unit/Traits/TraitDummyWithCustomerWithParentIF.php
index 1e8cc65..ed72041 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Traits/TraitDummyWithCustomerWithParentIF.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Traits/TraitDummyWithCustomerWithParentIF.php
@@ -1,30 +1,15 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines a dummy implementing traits with customer dependency and with implementing the parent
  * interface.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Traits;
 
 use UnzerSDK\Unzer;
@@ -52,12 +37,12 @@ public function getUnzerObject(): Unzer
     /**
      * Returns the url string for this resource.
      *
-     * @param bool $appendId
-     * @param $httpMethod
+     * @param bool   $appendId
+     * @param string $httpMethod
      *
      * @return string
      */
-    public function getUri($appendId = true, $httpMethod = HttpAdapterInterface::REQUEST_GET): string
+    public function getUri(bool $appendId = true, string $httpMethod = HttpAdapterInterface::REQUEST_GET): string
     {
         return 'test/uri/';
     }
diff --git a/vendor/unzerdev/php-sdk/test/unit/Traits/TraitDummyWithCustomerWithoutParentIF.php b/vendor/unzerdev/php-sdk/test/unit/Traits/TraitDummyWithCustomerWithoutParentIF.php
index f69b99d..c8eedaf 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Traits/TraitDummyWithCustomerWithoutParentIF.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Traits/TraitDummyWithCustomerWithoutParentIF.php
@@ -1,30 +1,15 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines a dummy implementing traits with customer dependency and without implementing the parent
  * interface.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Traits;
 
 use UnzerSDK\Traits\CanAuthorizeWithCustomer;
diff --git a/vendor/unzerdev/php-sdk/test/unit/Traits/TraitDummyWithoutCustomerWithParentIF.php b/vendor/unzerdev/php-sdk/test/unit/Traits/TraitDummyWithoutCustomerWithParentIF.php
index bc573e2..084bde4 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Traits/TraitDummyWithoutCustomerWithParentIF.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Traits/TraitDummyWithoutCustomerWithParentIF.php
@@ -1,30 +1,15 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines a dummy implementing traits without customer dependency and with implementing the parent
  * interface.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Traits;
 
 use UnzerSDK\Adapter\HttpAdapterInterface;
@@ -58,7 +43,7 @@ public function getUnzerObject(): Unzer
      *
      * @return string
      */
-    public function getUri($appendId = true, $httpMethod = HttpAdapterInterface::REQUEST_GET): string
+    public function getUri(bool $appendId = true, string $httpMethod = HttpAdapterInterface::REQUEST_GET): string
     {
         return 'test/uri/';
     }
diff --git a/vendor/unzerdev/php-sdk/test/unit/Traits/TraitDummyWithoutCustomerWithoutParentIF.php b/vendor/unzerdev/php-sdk/test/unit/Traits/TraitDummyWithoutCustomerWithoutParentIF.php
index 7c1f35a..abb2d9c 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Traits/TraitDummyWithoutCustomerWithoutParentIF.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Traits/TraitDummyWithoutCustomerWithoutParentIF.php
@@ -1,30 +1,15 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines a dummy implementing traits without customer dependency and without implementing the parent
  * interface.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Traits;
 
 use UnzerSDK\Traits\CanAuthorize;
diff --git a/vendor/unzerdev/php-sdk/test/unit/UnzerTest.php b/vendor/unzerdev/php-sdk/test/unit/UnzerTest.php
index fc67c67..771196b 100644
--- a/vendor/unzerdev/php-sdk/test/unit/UnzerTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/UnzerTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of the Unzer class.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit;
 
 use DateTime;
@@ -82,7 +67,9 @@ public function gettersAndSettersShouldWorkProperly(): void
     {
         $unzer = new Unzer('s-priv-1234');
         $unzer->setLocale('myLocale');
+        $unzer->setClientIp('myIpAddress');
         $this->assertEquals('myLocale', $unzer->getLocale());
+        $this->assertEquals('myIpAddress', $unzer->getClientIp());
 
         try {
             $unzer->setKey('this is not a valid key');
@@ -126,6 +113,7 @@ public function gettersAndSettersShouldWorkProperly(): void
      * Verify Unzer propagates resource actions to the resource service.
      *
      * @test
+     *
      * @dataProvider resourceServiceDP
      *
      * @param string $unzerMethod
@@ -151,6 +139,7 @@ public function unzerShouldForwardResourceActionCallsToTheResourceService(
      * Verify Unzer propagates payment actions to the payment service.
      *
      * @test
+     *
      * @dataProvider paymentServiceDP
      *
      * @param string $unzerMethod
@@ -176,6 +165,7 @@ public function unzerShouldForwardPaymentActionCallsToThePaymentService(
      * Verify Unzer propagates webhook actions to the webhook service.
      *
      * @test
+     *
      * @dataProvider UnzerShouldForwardWebhookActionCallsToTheWebhookServiceDP
      *
      * @param string $unzerMethod
@@ -201,6 +191,7 @@ public function unzerShouldForwardWebhookActionCallsToTheWebhookService(
      * Verify Unzer propagates cancel actions to the cancel service.
      *
      * @test
+     *
      * @dataProvider cancelServiceDP
      *
      * @param string $unzerMethod
@@ -321,7 +312,7 @@ public static function paymentServiceDP(): array
             'chargePayment'          => ['chargePayment', [$payment, 1.234, 'ALL'], 'chargePayment', [$payment, 1.234, 'ALL']],
             'chargePaymentAlt'       => ['chargePayment', [$payment], 'chargePayment', [$payment]],
             'ship'                   => ['ship', [$payment], 'ship', [$payment]],
-            'payout'                 => ['payout', [123, 'EUR', $paymentTypeId, 'url', $customer, $orderId, $metadata, 'basketId'], 'payout', [123, 'EUR', $paymentTypeId, 'url', $customer, $orderId, $metadata, 'basketId']],
+            'payout'                 => ['payout', [123, 'EUR', $paymentTypeId, 'url', $customer, $orderId, $metadata, $basket], 'payout', [123, 'EUR', $paymentTypeId, 'url', $customer, $orderId, $metadata, $basket]],
             'initPayPageCharge'      => ['initPayPageCharge', [$paypage, $customer, $basket, $metadata], 'initPayPageCharge', [$paypage, $customer, $basket, $metadata]],
             'initPayPageAuthorize'   => ['initPayPageAuthorize', [$paypage, $customer, $basket, $metadata], 'initPayPageAuthorize', [$paypage, $customer, $basket, $metadata]],
             'fetchDDInstalmentPlans' => ['fetchInstallmentPlans', [123.4567, 'EUR', 4.99, $today], 'fetchInstallmentPlans', [123.4567, 'EUR', 4.99, $today]]
@@ -341,16 +332,16 @@ public static function unzerShouldForwardWebhookActionCallsToTheWebhookServiceDP
         $event     = ['event1', 'event2'];
 
         return [
-            'createWebhook'=> [ 'createWebhook', [$url, 'event'], 'createWebhook', [$url, 'event'] ],
-            'fetchWebhook'=> [ 'fetchWebhook', [$webhookId], 'fetchWebhook', [$webhookId] ],
-            'fetchWebhook by object'=> [ 'fetchWebhook', [$webhook], 'fetchWebhook', [$webhook] ],
-            'updateWebhook'=> [ 'updateWebhook', [$webhook], 'updateWebhook', [$webhook] ],
-            'deleteWebhook'=> [ 'deleteWebhook', [$webhookId], 'deleteWebhook', [$webhookId] ],
-            'deleteWebhook by object'=> [ 'deleteWebhook', [$webhook], 'deleteWebhook', [$webhook] ],
-            'fetchAllWebhooks'=> [ 'fetchAllWebhooks', [], 'fetchAllWebhooks', [] ],
-            'deleteAllWebhooks'=> [ 'deleteAllWebhooks', [], 'deleteAllWebhooks', [] ],
-            'registerMultipleWebhooks'=> ['registerMultipleWebhooks', [$url, $event], 'registerMultipleWebhooks', [$url, $event] ],
-            'fetchResourceFromEvent'=> ['fetchResourceFromEvent', [], 'fetchResourceFromEvent', [] ]
+            'createWebhook' => [ 'createWebhook', [$url, 'event'], 'createWebhook', [$url, 'event'] ],
+            'fetchWebhook' => [ 'fetchWebhook', [$webhookId], 'fetchWebhook', [$webhookId] ],
+            'fetchWebhook by object' => [ 'fetchWebhook', [$webhook], 'fetchWebhook', [$webhook] ],
+            'updateWebhook' => [ 'updateWebhook', [$webhook], 'updateWebhook', [$webhook] ],
+            'deleteWebhook' => [ 'deleteWebhook', [$webhookId], 'deleteWebhook', [$webhookId] ],
+            'deleteWebhook by object' => [ 'deleteWebhook', [$webhook], 'deleteWebhook', [$webhook] ],
+            'fetchAllWebhooks' => [ 'fetchAllWebhooks', [], 'fetchAllWebhooks', [] ],
+            'deleteAllWebhooks' => [ 'deleteAllWebhooks', [], 'deleteAllWebhooks', [] ],
+            'registerMultipleWebhooks' => ['registerMultipleWebhooks', [$url, $event], 'registerMultipleWebhooks', [$url, $event] ],
+            'fetchResourceFromEvent' => ['fetchResourceFromEvent', [], 'fetchResourceFromEvent', [] ]
         ];
     }
 
diff --git a/vendor/unzerdev/php-sdk/test/unit/Validators/PrivateKeyValidatorTest.php b/vendor/unzerdev/php-sdk/test/unit/Validators/PrivateKeyValidatorTest.php
index 31fa6eb..2777a88 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Validators/PrivateKeyValidatorTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Validators/PrivateKeyValidatorTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of the private key validator.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Validators;
 
 use UnzerSDK\test\BasePaymentTest;
@@ -35,6 +20,7 @@ class PrivateKeyValidatorTest extends BasePaymentTest
      * Verify validate method behaves as expected.
      *
      * @test
+     *
      * @dataProvider validateShouldReturnTrueIfPrivateKeyHasCorrectFormatDP
      *
      * @param string $key
diff --git a/vendor/unzerdev/php-sdk/test/unit/Validators/PublicKeyValidatorTest.php b/vendor/unzerdev/php-sdk/test/unit/Validators/PublicKeyValidatorTest.php
index 18411ae..b00264d 100644
--- a/vendor/unzerdev/php-sdk/test/unit/Validators/PublicKeyValidatorTest.php
+++ b/vendor/unzerdev/php-sdk/test/unit/Validators/PublicKeyValidatorTest.php
@@ -1,29 +1,14 @@
 <?php
+
 /** @noinspection PhpUnhandledExceptionInspection */
 /** @noinspection PhpDocMissingThrowsInspection */
 /**
  * This class defines unit tests to verify functionality of the key validator.
  *
- * Copyright (C) 2020 - today Unzer E-Com GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
  * @link  https://docs.unzer.com/
  *
- * @author  Simon Gabriel <development@unzer.com>
- *
- * @package  UnzerSDK\test\unit
  */
+
 namespace UnzerSDK\test\unit\Validators;
 
 use UnzerSDK\test\BasePaymentTest;
@@ -35,6 +20,7 @@ class PublicKeyValidatorTest extends BasePaymentTest
      * Verify validate method behaves as expected.
      *
      * @test
+     *
      * @dataProvider validateShouldReturnTrueIfPublicKeyHasCorrectFormatDP
      *
      * @param string $key
diff --git a/vendor/unzerdev/php-sdk/unzer_logo.svg b/vendor/unzerdev/php-sdk/unzer_logo.svg
new file mode 100644
index 0000000..bfe66da
--- /dev/null
+++ b/vendor/unzerdev/php-sdk/unzer_logo.svg
@@ -0,0 +1,55 @@
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