Cryptology ePrint Archive: Report 2017/263

Bivariate attacks and confusion coefficients

Sylvain Guilley and Liran Lerman

Abstract: We solve the problem of finding the success rate of an optimal side-channel attack targeting at once the first and the last round of a block cipher. We relate the results to the properties of the direct and inverse substitution boxes (when they are bijective), in terms of confusion coefficients.

Category / Keywords: implementation /

Date: received 22 Mar 2017

Contact author: sylvain guilley at secure-ic com

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Version: 20170325:201339 (All versions of this report)

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