Differential cryptanalysis

Differential cryptanalysis is a method of cryptanalysis used to evaluate the security of cryptographic algorithms, particularly symmetric key ciphers. It focuses on how differences in plaintext inputs can affect the corresponding differences in the ciphertext outputs, helping to reveal information about the key used for encryption. The technique, introduced in the late 1980s by Eli Biham and Adi Shamir, is particularly effective against block ciphers.