StreamCiphers

Overview

This project implements four different stream ciphers in C++:

• ChaCha20: A modern, secure stream cipher designed for high-speed performance.
• Grain128: A lightweight stream cipher suitable for constrained environments.
• CryptMT: A cryptographically secure pseudo-random number generator based on the Mersenne Twister algorithm.
• RC4: A widely known but now deprecated stream cipher.

The project is built using CMake and is designed to provide an educational overview and comparison of these cryptographic algorithms.

Requirements

• CMake 3.10 or higher
• A C++11 compatible compiler

Building the Project

To build the project, follow these steps:

1. Clone the Repository

   git clone https://github.com/st43r/StreamCiphers.git
   cd StreamCiphers

2. Create a Build Directory

   mkdir build
   cd build

3. Run CMake

   cmake ..

4. Build the Project

   make

   This will produce an executable named StreamCiphers.

Usage

To use the StreamCiphers executable, you can run it from the command line. The exact usage depend on the implementation details of main.cpp, which is designed to demonstrate the functionality of the stream ciphers.

Example:

./StreamCiphers

This will create input.txt file with greetings to system user.
Also, there will be 4 files that contains encrypted input file and 4 files that contains decrypted file by each cipher.

File Structure

• CMakeLists.txt: CMake configuration file for building the project.
• main.cpp: The main file that drives the execution of the stream cipher implementations and tests ciphers on the greeting text file.
• Grain128/: Contains source and header files for the Grain128 cipher.
• ChaCha20/: Contains source and header files for the ChaCha20 cipher.
• RC4/: Contains source and header files for the RC4 cipher.
• CryptMT/: Contains source and header files for the CryptMT cipher.
• StreamCipher/: Contains the interface for the stream ciphers.