Concept

Impossible differential cryptanalysis

Related publications (29)

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FOX: a new family of block ciphers

Serge Vaudenay, Pascal Junod

In this paper, we describe the design of a new family of block ciphers based on a Lai-Massey scheme, named FOX. The main features of this design, besides a very high security level, are a large implementation flexibility on various platforms as well as hig ...

2004

On some weak extensions of AES and BES

Serge Vaudenay, Jean Monnerat

In 2002, Murphy and Robshaw introduced an extension BES of AES and argued this could compromise the security of AES. We introduce here two block-ciphers CES and big-BES that are some extensions of the AES and BES respectively in the spirit of Hensel liftin ...

2004

Cryptanalysis of the Chor-Rivest cryptosystem

Serge Vaudenay

Knapsack-based cryptosystems used to be popular in the beginning of public key cryptography before all but the Chor-Rivest cryptosystem (B. Chor and R.L. Rivest, 1985) was broken. The article demonstrates how to break this one with its suggested parameters ...

2001

DFCv2

Serge Vaudenay

The development process of the Advanced Encryption Standard (AES) was launched in 1997 by the US government through NIST. The Decorrelated Fast Cipher (DFC) was the CNRS proposal for the AES, among 14 other candidates in 1998. It was based on the recent de ...

2000

Decorrelated Fast Cipher: an AES candidate well suited for low cost smart cards applications

Serge Vaudenay

In response to the call for candidates issued by the National Institute for Standards and Technologies (the Advanced Encryption Standard project) the Ecole Normale Superieure proposed a candidate called DFC (Decorrelated Fast Cipher). DFC is based on a dec ...

2000

Cryptanalysis of the Chor-Rivest cryptosystem

Serge Vaudenay

Knapsack-based cryptosystems used to be popular in the beginning of public key cryptography before being all broken, all but the Chor-Rivest cryptosystem. We show how to break this one with its suggested parameters: GF(p24) and GF(25625

1998

An experiment on DES statistical cryptanalysis

Serge Vaudenay

Linear cryptanalysis and differential cryptanalysis are the most important methods of attack against block ciphers. Their efficiency have been demonstrated against several ciphers, including the Data Encryption Standard. We prove that both of them can be c ...

1996

The Security of Cryptographic Primitives

Serge Vaudenay, Jacques Stern

In the early fifties, Claude Shannon initiated the theory of cryptographic primitives. He defined the notion of diffusion and confusion. However, this theory did not developed very much until nowadays. Recently, the differential cryptanalysis and the linea ...

Laboratoire d'Informatique de l'Ecole Normale Supérieure1995

Links between differential and linear cryptanalysis

Serge Vaudenay

Linear cryptanalysis, introduced in 1994 by Matsui, will most certainly open-up the way to new attack methods which may be made more efficient when compared or combined with differential cryptanalysis. This paper exhibits new relations between linear and d ...

1995