The Design of Rijndael
SAC '00 Proceedings of the 7th Annual International Workshop on Selected Areas in Cryptography
Camellia: A 128-Bit Block Cipher Suitable for Multiple Platforms - Design and Analysis
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
ASIACRYPT '96 Proceedings of the International Conference on the Theory and Applications of Cryptology and Information Security: Advances in Cryptology
On the Pseudorandomness of Top-Level Schemes of Block Ciphers
ASIACRYPT '00 Proceedings of the 6th International Conference on the Theory and Application of Cryptology and Information Security: Advances in Cryptology
ASIACRYPT '00 Proceedings of the 6th International Conference on the Theory and Application of Cryptology and Information Security: Advances in Cryptology
On the Security of Rijndael-Like Structures against Differential and Linear Cryptanalysis
ASIACRYPT '02 Proceedings of the 8th International Conference on the Theory and Application of Cryptology and Information Security: Advances in Cryptology
Provable Security against Differential and Linear Cryptanalysis for the SPN Structure
FSE '00 Proceedings of the 7th International Workshop on Fast Software Encryption
Impossible differential cryptanalysis of 7-round advanced encryption standard (AES)
Information Processing Letters - Devoted to the rapid publication of short contributions to information processing
Impossible Differential Cryptanalysis of CLEFIA
Fast Software Encryption
New Impossible Differential Attacks on AES
INDOCRYPT '08 Proceedings of the 9th International Conference on Cryptology in India: Progress in Cryptology
On Generalized Feistel Structures Using the Diffusion Switching Mechanism
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Seven New Block Cipher Structures with Provable Security against Differential Cryptanalysis
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Impossible Boomerang Attack for Block Cipher Structures
IWSEC '09 Proceedings of the 4th International Workshop on Security: Advances in Information and Computer Security
EUROCRYPT'97 Proceedings of the 16th annual international conference on Theory and application of cryptographic techniques
Cryptanalysis of Skipjack reduced to 31 rounds using impossible differentials
EUROCRYPT'99 Proceedings of the 17th international conference on Theory and application of cryptographic techniques
On the differential and linear efficiency of balanced Feistel networks
Information Processing Letters
Improving the generalized Feistel
FSE'10 Proceedings of the 17th international conference on Fast software encryption
SAC'10 Proceedings of the 17th international conference on Selected areas in cryptography
On the diffusion of generalized Feistel structures regarding differential and linear cryptanalysis
SAC'10 Proceedings of the 17th international conference on Selected areas in cryptography
On unbalanced Feistel networks with contracting MDS diffusion
Designs, Codes and Cryptography
On maximum differential probability of generalized Feistel
ACISP'11 Proceedings of the 16th Australasian conference on Information security and privacy
Double SP-functions: enhanced generalized feistel networks
ACISP'11 Proceedings of the 16th Australasian conference on Information security and privacy
HIGHT: a new block cipher suitable for low-resource device
CHES'06 Proceedings of the 8th international conference on Cryptographic Hardware and Embedded Systems
On feistel structures using a diffusion switching mechanism
FSE'06 Proceedings of the 13th international conference on Fast Software Encryption
A new dedicated 256-bit hash function: FORK-256
FSE'06 Proceedings of the 13th international conference on Fast Software Encryption
The provable constructive effect of diffusion switching mechanism in CLEFIA-type block ciphers
Information Processing Letters
The 128-bit blockcipher CLEFIA
FSE'07 Proceedings of the 14th international conference on Fast Software Encryption
Zero correlation linear cryptanalysis with reduced data complexity
FSE'12 Proceedings of the 19th international conference on Fast Software Encryption
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This work deals with the classification, security and efficiency of generalized Feistel networks (GFNs) with 4 lines. We propose a definition of a GFN, essentially limiting consideration to Feistel-type constructions with domain-preserving F-functions and rotation by one line between rounds. Under this definition, we demonstrate that there are only two non-contracting representatives in the class of 4-line GFNs up to equivalence, namely, the type-I and type-II GFNs that avoid obvious differential effects. We propose to instantiate the GFNs with SPS-functions (two substitution layers separated by a permutation layer) instead of single SP-functions (one substitution-permutation layer only). We prove tight lower bounds on the number of differentially and linearly active functions and S-boxes in such ciphers. We show that the instantiation with SPS-functions using MDS diffusion provides a proportion of differentially and linearly active S-boxes by up to 33 and 50 % higher than that with single SP-functions for type-I and type-II GFNs, respectively, if the same matrix is used in all rounds. Moreover, we present the upper bounds on the differential and the linear hull probability for the type-II GFNs with SPS-functions. This opens up the possibility of designing more efficient block ciphers based on GFN structure.