RC4 Cipher - Fast Python Encryption Library

A high-performance RC4 encryption library for Python with optimized algorithms and easy-to-use interface.

Features

• ⚡ Fast RC4 encryption/decryption
• 🔒 Secure key scheduling algorithm
• 🐍 Pure Python implementation
• 📦 Easy installation via pip
• 🔧 Simple API for quick integration

Installation

pip install rc4-cipher

Quick Start

from rc4_cipher import RC4Cipher

# Create cipher instance
cipher = RC4Cipher()

# Encrypt data
key = b"my_secret_key"
plaintext = b"Hello, World!"
encrypted = cipher.encrypt(plaintext, key)

# Decrypt data
decrypted = cipher.decrypt(encrypted, key)
print(decrypted)  # b"Hello, World!"

Advanced Usage

from rc4_cipher import RC4Cipher, generate_key

# Generate random key
key = generate_key(16)  # 16-byte key

# Initialize cipher
cipher = RC4Cipher()

# Encrypt with custom options
data = b"Sensitive information"
encrypted = cipher.encrypt(data, key, optimize=True)

# Decrypt
original = cipher.decrypt(encrypted, key)

Performance

This library is optimized for speed and can handle large data streams efficiently:

• Encryption speed: ~50 MB/s on modern hardware
• Memory efficient streaming support
• Minimal dependencies

Security Notice

RC4 is provided for compatibility purposes. For new applications, consider using AES or other modern ciphers.

License

MIT License - see LICENSE file for details.

Contributing

Contributions are welcome! Please see our GitHub repository for guidelines.