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» On the Algebraic Immunity of Symmetric Boolean Functions
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ACISP
2006
Springer
13 years 11 months ago
On Exact Algebraic [Non-]Immunity of S-Boxes Based on Power Functions
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...
Nicolas Courtois, Blandine Debraize, Eric Garrido
FSE
2006
Springer
109views Cryptology» more  FSE 2006»
13 years 9 months ago
Computing the Algebraic Immunity Efficiently
The purpose of algebraic attacks on stream and block ciphers is to recover the secret key by solving an overdefined system of multivariate algebraic equations. They become very eff...
Frédéric Didier, Jean-Pierre Tillich
SETA
2010
Springer
137views Mathematics» more  SETA 2010»
13 years 3 months ago
On a Conjecture about Binary Strings Distribution
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...
Jean-Pierre Flori, Hugues Randriam, Gérard ...
CRYPTO
2003
Springer
156views Cryptology» more  CRYPTO 2003»
13 years 10 months ago
Fast Algebraic Attacks on Stream Ciphers with Linear Feedback
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...
Nicolas Courtois