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EUROCRYPT '93 Workshop on the theory and application of cryptographic techniques on Advances in cryptology
Finite fields
The Design of Rijndael
SAC '00 Proceedings of the 7th Annual International Workshop on Selected Areas in Cryptography
On the Construction of Block Ciphers Provably Secure and Not Relying on Any Unproved Hypotheses
CRYPTO '89 Proceedings of the 9th Annual International Cryptology Conference on Advances in Cryptology
Generalized Birthday Arracks on Unbalanced Feistel Networks
CRYPTO '98 Proceedings of the 18th Annual International Cryptology Conference on Advances in Cryptology
ASIACRYPT '96 Proceedings of the International Conference on the Theory and Applications of Cryptology and Information Security: Advances in Cryptology
Proceedings of the Third International Workshop on Fast Software Encryption
Proceedings of the Third International Workshop on Fast Software Encryption
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Proceedings of the Third International Workshop on Fast Software Encryption
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CHES '07 Proceedings of the 9th international workshop on Cryptographic Hardware and Embedded Systems
KATAN and KTANTAN -- A Family of Small and Efficient Hardware-Oriented Block Ciphers
CHES '09 Proceedings of the 11th International Workshop on Cryptographic Hardware and Embedded Systems
Affinity of permutations of F2n
Discrete Applied Mathematics - Special issue: Coding and cryptography
Generic attacks on unbalanced Feistel schemes with expanding functions
ASIACRYPT'07 Proceedings of the Advances in Crypotology 13th international conference on Theory and application of cryptology and information security
The 128-bit blockcipher CLEFIA
FSE'07 Proceedings of the 14th international conference on Fast Software Encryption
Analysis of 3-line generalized Feistel networks with double SD-functions
Information Processing Letters
Double SP-functions: enhanced generalized feistel networks
ACISP'11 Proceedings of the 16th Australasian conference on Information security and privacy
The provable constructive effect of diffusion switching mechanism in CLEFIA-type block ciphers
Information Processing Letters
On permutation layer of type 1, source-heavy, and target-heavy generalized feistel structures
CANS'11 Proceedings of the 10th international conference on Cryptology and Network Security
Differential and linear cryptanalysis using mixed-integer linear programming
Inscrypt'11 Proceedings of the 7th international conference on Information Security and Cryptology
Generalized Feistel networks revisited
Designs, Codes and Cryptography
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CHES'13 Proceedings of the 15th international conference on Cryptographic Hardware and Embedded Systems
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Though unbalanced Feistel networks (UFN) are widely considered as an alternative to balanced Feistel networks (BFN) and substitution---permutation networks (SPN) in symmetric cryptography, little has been known yet about their resistance against differential and linear cryptanalysis. In this work, we tackle the problem at the example of d-branch SP-type UFNs with contracting MDS diffusion (dCUFN-SP). Under some restrictions on the contracting MDS matrices over multiple rounds, we prove lower bounds on the number of differentially active S-boxes for dCUFN-SP with $${d\in\{3,4\}}$$ and on the number of linearly active S-boxes for dCUFN-SP with d 驴 3. As opposed to SPNs and BFNs, the number of differentially active S-boxes for such constructions does not directly translate to an upper bound on the probability of differential trails. So we provide a thorough analysis of single-round differentials that yields an upper bound on the probability of a differential trail. It is also shown that the efficiency level of dCUFN-SP is comparable to that of BFNs and SPNs with respect to differential and linear cryptanalysis.