feal-differential-cryptanalysis - FEAL Differential Cryptanalysis Guidance
Provides guidance for implementing differential cryptanalysis attacks on FEAL block ciphers to recover round keys
Tags
Updated: 2026-03-26Capabilities
Typical Inputs
Typical Outputs
What this skill does
- analyze cipher structure
- study differential properties
- design chosen plaintexts
- implement key recovery
- validate attack components
- compute intermediate values
- check differential relationships
- verify F-function implementation
Inputs
- cipher specification
- plaintext-ciphertext pairs
- known test key
- block cipher structure
- F-function implementation
Outputs
- recovered round keys
- differential characteristics
- intermediate values
- validation results
- vote counts
Requirements
- Feistel network cipher
- differential cryptanalysis knowledge
- cryptography principles
- CTF environment