File Encrypter/Decrypter Program

This program is a simple tool for encrypting and decrypting text files using the Caesar Cipher algorithm. It's designed as an educational project to demonstrate basic file manipulation and encryption techniques.

Features:

• Encrypts plain text files with a user-provided secret key.
• Decrypts encrypted files using the corresponding secret key.
• User-friendly interface for easy interaction.
• Error handling for invalid inputs.

Security Considerations:

This program utilizes the Caesar Cipher, a simple encryption method with well-known weaknesses. It's not intended for high-security applications.

Getting Started:

1. Clone or download the project repository.
2. Ensure you have a C compiler installed (e.g., GCC).
3. Compile the C code (caesar.c) using the C compiler.
4. Run the compiled program, ensuring the necessary files are in the correct location.
5. Follow the on-screen instructions for encryption or decryption.

Code Structure:

The program is implemented entirely in C. It handles user interaction, file I/O, error handling, and the core encryption and decryption algorithms within the same C codebase.

Learning Outcomes:

This project provides a practical introduction to:

• Basic file I/O operations in C.
• Implementing encryption and decryption algorithms in C.
• Understanding the Caesar Cipher algorithm and its limitations.

Authors

• Andrew Sliva

Further Exploration:

Explore more advanced encryption algorithms and libraries. Implement unit tests for the program's functionality. Feel free to contribute or modify the code for further learning!