Cryptology ePrint Archive: Report 2015/001

A note on the security of Higher-Order Threshold Implementations

Oscar Reparaz

Abstract: At ASIACRYPT 2014, Bilgin et al. describe higher-order threshold implementations: a masking countermeasure claiming resistance against higher-order differential power analysis attacks. In this note, we point out that higher-order threshold implementations do not necessarily provide higher-order security. We give as counterexamples two concrete higher-order threshold implementations that exhibit a second order flaw.

Category / Keywords: implementation / higher-order DPA, threshold implementations, glitches

Date: received 2 Jan 2015

Contact author: oscar reparaz at esat kuleuven be

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Version: 20150105:085817 (All versions of this report)

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