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 …

We present new attacks on the Feistel network, where each round function consists of a
subkey XOR, S-boxes, and then a linear transformation (ie, an SP round function). Our …

Fast correlation attacks have considerably evolved since their first appearance. They have
lead to new design criteria of stream ciphers, and have found applications in other areas of …

While generic attacks on classical Feistel schemes and unbalanced Feistel schemes have
been studied a lot, generic attacks on several generalized Feistel schemes like type-1, type …

This book constitutes the thoroughly refereed post-proceedings of the 17th Annual
International Workshop on Selected Areas in Cryptography, SAC 2010, held in Waterloo …

Hash functions are often constructed based on permutations or blockciphers, and security
proofs are typically done in the ideal permutation or cipher model. However, once these …

In this paper, we investigate the impossible differential properties of the underlying block
cipher and compression function of the new cryptographic hashing standard of the Russian …

Le premier chapitre de cette these reprend intégralement le texte de la brochure Sommes-
nous prisonniers des codes secrets, que j'ai écrite avec Pierre-Alain Fouque, et qui est …

We present attacks on the generalized Feistel schemes, where each round function consists
of a subkey XOR, S-boxes, and then a linear transformation (ie a Substitution-Permutation …

Generalized Feistel networks (GFN) are broadly employed in the design of primitives for
block ciphers, stream ciphers, and hash functions. Lately, endowing the functions of GFNs …