CRYPTO '89 Proceedings on Advances in cryptology
Differential cryptanalysis of the data encryption standard
Differential cryptanalysis of the data encryption standard
Linear cryptanalysis method for DES cipher
EUROCRYPT '93 Workshop on the theory and application of cryptographic techniques on Advances in cryptology
The Design of Rijndael
ASIACRYPT '96 Proceedings of the International Conference on the Theory and Applications of Cryptology and Information Security: Advances in Cryptology
Impossible Differential Cryptanalysis of Zodiac
FSE '01 Revised Papers from the 8th International Workshop on Fast Software Encryption
Improved Upper Bounds of Differential and Linear Characteristic Probability for Camellia
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
On feistel structures using a diffusion switching mechanism
FSE'06 Proceedings of the 13th international conference on Fast Software Encryption
The 128-bit blockcipher CLEFIA
FSE'07 Proceedings of the 14th international conference on Fast Software Encryption
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
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
Piccolo: an ultra-lightweight blockcipher
CHES'11 Proceedings of the 13th international conference on Cryptographic hardware and embedded systems
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
Generalized Feistel networks revisited
Designs, Codes and Cryptography
| Hi-index | 0.00 |
To design secure blockciphers, estimating immunity against differential attack and linear attack is essential. Recently, Diffusion Switching Mechanism (DSM) is proposed as a design framework to enhance the immunity of Feistel structure against differential attack and linear attack. In this paper, we give novel results on the effect of DSM on three generalized Feistel structures, i.e. Type-I, Type-II and Nyberg's structures. We first show a method for roughly estimating lower bounds of a number of active S-boxes in Type-I and Type-II structures using DSM. Then we propose an improved search algorithm to find lower bounds for generalized structures efficiently. Experimental results obtained by the improved algorithm show that DSM raises lower bounds for all of the structures, and also show that Nyberg's structure has the slowest diffusion effect among them when SP-type F-functions are used.