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Investigations on c-(almost) perfect nonlinear functions (2004.02245v2)
Published 31 Mar 2020 in cs.CR, math.CO, and math.NT
Abstract: In a prior paper [14], along with P. Ellingsen, P. Felke and A. Tkachenko, we defined a new (output) multiplicative differential, and the corresponding c-differential uniformity, which has the potential of extending differential cryptanalysis. Here, we continue the work, by looking at some APN functions through the mentioned concept and show that their c-differential uniformity increases significantly, in some cases.
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