40 search results - page 4 / 8 » Nonlinear Equivalence of Stream Ciphers |
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CRYPTO
2003
Springer
15 years 2 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...
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TIT
2008
14 years 9 months ago
2008
Abstract. The recent algebraic attacks have received a lot of attention in cryptographic literature. The algebraic immunity of a Boolean function quantifies its resistance to the s...
FSE
2005
Springer
15 years 3 months ago
2005
Springer
In this paper we present a new class of stream ciphers based on a very simple mechanism. The heart of our method is a Feedback with Carry Shift Registers (FCSR) automaton. This au...
EUROCRYPT
2003
Springer
15 years 2 months ago
2003
Springer
A classical construction of stream ciphers is to combine several LFSRs and a highly non-linear Boolean function f. Their security is usually analysed in terms of correlation attack...
CEC
2007
IEEE
15 years 4 months ago
2007
IEEE
— In this work, we show that heuristic techniques (particularly Simulated Annealing) can be successfully applied in the search of good non-linear approximations of cryptographic ...