Cryptology ePrint Archive: Report 2018/315

Secure Multiplication for Bitslice Higher-Order Masking: Optimisation and Comparison

Dahmun Goudarzi and Anthony Journault and Matthieu Rivain and François-Xavier Standaert

Abstract: In this paper, we optimize the performances and compare several recent masking schemes in bitslice on 32-bit arm devices, with a focus on multiplication. Our main conclusion is that efficiency (or randomness) gains always come at a cost, either in terms of composability or in terms of resistance against horizontal attacks. Our evaluations should therefore allow a designer to select a masking scheme based on implementation constraints and security requirements. They also highlight the increasing feasibility of (very) high-order masking that are offered by increasingly powerful embedded devices, with new opportunities of high-security devices in various contexts.

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Original Publication (with minor differences): COSADE 2018

Date: received 3 Apr 2018, last revised 3 Apr 2018

Contact author: dahmun goudarzi at cryptoexperts com, anthony journault@uclouvain be

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Version: 20180403:215437 (All versions of this report)

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