An Implementation of Function-Hiding Inner Product Encryption (FHIPE)

A fork to update for Ubuntu 18.04 and new macOS version.

This is an implementation of the function-hiding inner product encryption scheme described here: (link to be posted)

This implementation is a research prototype built for micro-benchmarking purposes, and is not intended to be used in production-level code as it has not been carefully analyzed for potential security flaws.

Authors:

• Kevin Lewi, Stanford University
• Sam Kim, Stanford University
• Avradip Mandal, Fujitsu Laboratories of America
• Hart Montgomery, Fujitsu Laboratories of America
• Arnab Roy, Fujitsu Laboratories of America
• David J. Wu, Stanford University

Contact Kevin Lewi for questions about the code: klewi@cs.stanford.edu

Prerequisites

Make sure you have the following installed:

• Python 3.x.x
• GMP 5.x
• PBC
• OpenSSL

Installation

git clone --recursive https://github.com/kevinlewi/fhipe.git
cd fhipe
sudo make install (use `make install-mac` if running on MAC OS X)

Running a Test

python3 tests/test_ipe.py

Modules

This library ships with the following modules:

• Inner Product Encryption: In fhipe/ipe.py, implements function-hiding inner product encryption
• Two-input Functional Encryption. In fhipe/mife.py, implements secret-key small-domain two-input functional encryption for arbitrary functions

Submodules

We rely on the following two submodules:

• FLINT for the C backend
• Charm for the pairings implementation