Linear cryptanalysis method for DES cipher
EUROCRYPT '93 Workshop on the theory and application of cryptographic techniques on Advances in cryptology
New types of cryptanalytic attacks using related keys
EUROCRYPT '93 Workshop on the theory and application of cryptographic techniques on Advances in cryptology
Differential Cryptanalysis of DES-like Cryptosystems
CRYPTO '90 Proceedings of the 10th Annual International Cryptology Conference on Advances in Cryptology
New Block Encryption Algorithm MISTY
FSE '97 Proceedings of the 4th International Workshop on Fast Software Encryption
Improved Cryptanalysis of MISTY1
FSE '02 Revised Papers from the 9th International Workshop on Fast Software Encryption
FSE '02 Revised Papers from the 9th International Workshop on Fast Software Encryption
Related-Key boomerang and rectangle attacks
EUROCRYPT'05 Proceedings of the 24th annual international conference on Theory and Applications of Cryptographic Techniques
Higher Order Differential Attacks on Reduced-Round MISTY1
Information Security and Cryptology --- ICISC 2008
Security and Communication Networks
Weak-Key class of MISTY1 for related-key differential attack
Inscrypt'11 Proceedings of the 7th international conference on Information Security and Cryptology
Weak keys of the full MISTY1 block cipher for related-key differential cryptanalysis
CT-RSA'13 Proceedings of the 13th international conference on Topics in Cryptology
Hi-index | 0.00 |
In 1997, M. Matsui proposed secret-key cryptosystems called MISTY 1 and MISTY 2, which are 8-and 12-round block ciphers with a 64-bit block, and a 128-bit key. They are designed based on the principle of provable security against differential and linear cryptanalysis. In this paper we present large collections of weak-key classes encompassing 273 and 270 weak keys for 7-round MISTY 1 and 2 for which they are vulnerable to a related-key amplified boomerang attack. Under our weak-key assumptions, the related-key amplified boomerang attack can be applied to 7-round MISTY 1 and 2 with 254, 256 chosen plaintexts and 255.3 7-round MISTY 1 encryptions, 265 7-round MISTY 2 encryptions, respectively.