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A Method For Generation Of High-Nonlinear S-Boxes Based On Gradient Descent
nonlinearity symmetric ciphers
2014/3/10
Criteria based on the analysis of the properties of vectorial Boolean functions for selection of substitutions (S-boxes) for symmetric cryptographic primitives are given. We propose an improved gradie...
On highly nonlinear S-boxes and their inability to thwart DPA attacks
nonlinear S-boxes thwart DPA attacks
2009/3/13
Prouff has introduced recently, at FSE 2005, the notion of
transparency order of S-boxes. This new characteristic is related to the
ability of an S-box, used in a cryptosystem in which the round key...