Vertaile menetelmiä

	Differentiaalinen kryptanalyysi	Lineaarinen kryptanalyysi
Tieteenala	Kryptografia	Kryptografia
Menetelmäperhe	Machine learning	Machine learning
Syntyvuosi	1990	1993
Kehittäjä	Eli Biham	Mitsuru Matsui
Tyyppi	statistical attack on block ciphers	linear approximation attack
Alkuperäislähde	Biham, E., & Shamir, A. (1990). Differential cryptanalysis of DES-like cryptosystems. In Advances in Cryptology - CRYPTO 1990, LNCS 537, pp. 2-21.	Matsui, M. (1993). Linear cryptanalysis method for DES cipher. In Advances in Cryptology - EUROCRYPT 1993, LNCS 765, pp. 386-397.
Rinnakkaisnimet	differential attack, differential path, differential probability	linear attack, linear approximation, piling-up lemma
Liittyvät	3	3
Tiivistelmä	Differential cryptanalysis is a statistical attack technique on symmetric block ciphers that analyzes differences in inputs and outputs to recover secret keys. Introduced by Eli Biham and Adi Shamir in 1990, differential cryptanalysis was the first practical attack on DES that outperformed brute force search. The technique exploits non-random properties of cipher transformations by studying how small changes in plaintext propagate through the cipher rounds. Differential cryptanalysis has shaped cipher design for three decades.	Linear cryptanalysis is a known-plaintext attack that exploits linear approximations of a cipher's non-linear transformations to recover secret key bits. Introduced by Mitsuru Matsui in 1993, linear cryptanalysis provides practical attacks on ciphers like DES with computational complexity less than brute force. The technique analyzes statistical biases in how linear combinations of plaintext and ciphertext bits relate to key bits, enabling key recovery with reduced data requirements.