RC Series (RC2/RC4/RC5/RC6) Online Encryption/Decryption

This tool performs local encryption/decryption for RC2, RC4, RC5, and RC6 with algorithm-specific parameters, modes, and encoding formats.

Key Features

• RC2 / RC4 / RC5 / RC6 support
• Configurable modes, paddings, rounds, and per-algorithm options
• Multiple input/output encodings
• Key, IV, and parameter validation hints

Steps

1. Select algorithm and encrypt/decrypt mode.
2. Configure mode, padding, and algorithm-specific options.
3. Enter key, IV, and text input.
4. Run and copy output.

Notes

• RC2/RC4 are not recommended for strong modern security requirements.
• Be aware of known RC4 biases and deprecation status.
• Prefer modern standards (such as AES or ChaCha20) in production.