CISC
2009
Springer
13 years 2 months ago
2009
Springer
In [10], Buchmann, Pyshkin and Weinmann have described two families of Feistel and SPN block ciphers called Flurry and Curry respectively. These two families of ciphers are fully p...
SETA
2010
Springer
13 years 2 months ago
2010
Springer
It is a difficult challenge to find Boolean functions used in stream ciphers achieving all of the necessary criteria and the research of such functions has taken a significant d...
ICISC
2004
13 years 6 months ago
2004
Algebraic attacks on stream ciphers [14] recover the key by solving an overdefined system of multivariate equations. Such attacks can break several interesting cases of LFSR-based ...
DAGSTUHL
2007
13 years 6 months ago
2007
In this paper we give a specification of a new block cipher that can be called the Courtois Toy Cipher (CTC). It is quite simple, and yet very much like any other known block ciph...
EUROCRYPT
2006
Springer
13 years 8 months ago
2006
Springer
In this paper we propose several efficient algorithms for assessing the resistance of Boolean functions against algebraic and fast algebraic attacks when implemented in LFSRbased s...
CRYPTO
2003
Springer
13 years 9 months ago
2003
Springer
Many popular stream ciphers apply a filter/combiner to the state of one or several LFSRs. Algebraic attacks on such ciphers [10, 11] are possible, if there is a multivariate relat...
WCC
2005
Springer
13 years 10 months ago
2005
Springer
Abstract. The recently developed algebraic attacks apply to all keystream generators whose internal state is updated by a linear transition function, including LFSR-based generator...
INDOCRYPT
2005
Springer
13 years 10 months ago
2005
Springer
This article presents some new results concerning two algebraic attacks against the F-FCSR constructions proposed in [2]. We focus on the parameters of the stream ciphers proposed ...
ACISP
2006
Springer
13 years 10 months ago
2006
Springer
In this paper we are interested in algebraic immunity of several well known highly-nonlinear vectorial Boolean functions (or Sboxes), designed for block and stream ciphers. Unfortu...
CTRSA
2009
Springer
13 years 11 months ago
2009
Springer
CTC is a toy cipher designed in order to assess the strength of algebraic attacks. While the structure of CTC is deliberately weak with respect to algebraic attacks, it was claimed...