Cryptology ePrint Archive: Report 2015/719

Consolidating masking schemes

Oscar Reparaz and Begül Bilgin and Svetla Nikova and Benedikt Gierlichs and Ingrid Verbauwhede

Abstract: In this paper we investigate relations between several masking schemes. We show that the Ishai--Sahai--Wagner private circuits construction is closely related to Threshold Implementations and the Trichina gate. The implications of this observation are manifold. We point out a higher-order weakness in higher-order Threshold Implementations, suggest a mitigation and provide new sharings that use a lower number of input shares.

Category / Keywords: implementation / Masking, Private Circuits, Ishai--Sahai--Wagner, Threshold Implementations, Trichina gate, higher-order DPA

Original Publication (with minor differences): IACR-CRYPTO-2015

Date: received 19 Jul 2015

Contact author: oscar reparaz at esat kuleuven be

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Version: 20150720:065923 (All versions of this report)

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