Feistel Ciphers with L2-Decorrelation
SAC '98 Proceedings of the Selected Areas in Cryptography
Provable Security for Block Ciphers by Decorrelation
STACS '98 Proceedings of the 15th Annual Symposium on Theoretical Aspects of Computer Science
EUROCRYPT'97 Proceedings of the 16th annual international conference on Theory and application of cryptographic techniques
Markov ciphers and differential cryptanalysis
EUROCRYPT'91 Proceedings of the 10th annual international conference on Theory and application of cryptographic techniques
Difference Distribution Attack on DONUT and Improved DONUT
ICISC '00 Proceedings of the Third International Conference on Information Security and Cryptology
Cryptanalysis of Block Ciphers with Overdefined Systems of Equations
ASIACRYPT '02 Proceedings of the 8th International Conference on the Theory and Application of Cryptology and Information Security: Advances in Cryptology
The Key-Dependent Attack on Block Ciphers
ASIACRYPT '09 Proceedings of the 15th International Conference on the Theory and Application of Cryptology and Information Security: Advances in Cryptology
Generic attacks on unbalanced feistel schemes with contracting functions
ASIACRYPT'06 Proceedings of the 12th international conference on Theory and Application of Cryptology and Information Security
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In the first part of this paper the decorrelation theory of Vaudenay is analysed. It is shown that the theory behind the proposed constructions does not guarantee security against state-of-the-art differential attacks. In the second part of this paper the proposed Decorrelated Fast Cipher (DFC), a candidate for the Advanced Encryption Standard, is analysed. It is argued that the cipher does not obtain provable security against a differential attack. Also, an attack on DFC reduced to 6 rounds is given.