Results 81 to 90 of about 205 (141)

Attacks on Hash Functions based on Generalized Feistel -- Application to Reduced-Round Lesamnta and Shavite-3-512

open access: yes, 2010
International audienceIn this paper we study the strength of two hash functions which are based on Generalized Feistels. We describe a new kind of attack based on a cancellation property in the round function. This new technique allows to efficiently use
Fouque, Pierre-Alain   +3 more
core  

Accurate Estimation of the Full Differential Distribution for General Feistel Structures

open access: yesAccurate Estimation of the Full Differential Distribution for General Feistel Structures
Statistical cryptanalysis is one of the most powerful tools to analyze symmetric key cryptographic primitives such as block ciphers. One of these attacks, the differential attack has been demonstrated to break a wide range of block ciphers. Block cipher proposals previously obtain a rough estimate of their security margin against differential attacks ...
openaire  

biclique cryptanalysis of reduced-round piccolo block cipher

open access: yes, 2012
Piccolo is a lightweight block cipher, with a fixed 64-bit block size and variable key length 80- or 128-bit, which was proposed at CHES 2011. The iterative structure of Piccolo is a variant of Generalized Feistel Network.
Wang Yanfeng, Yu Xiaoli, Wu Wenling
core  

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