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Paper 2016/420

A note on the security of threshold implementations with $d+1$ input shares

Santos Merino Del Pozo and François-Xavier Standaert

Abstract

Recently, threshold implementations (TI) with $d + 1$ input shares have been proposed at Crypto 2015. This optimization aims for more lightweight TI designs while keeping the glitch-resistance of the original concept. In this note, we consider such an approach and provide preliminary simulation-based evidence, backed by empirical results, of the existence of $d^{\text{th}}$-order leakages. We conclude that, while for first-order TI designs this solution can be overkill due to the extra randomness requirements, higher-order TIs can still benefit from it.

Metadata
Available format(s)
PDF
Category
Implementation
Publication info
Preprint. MINOR revision.
Keywords
threshold implementationsmasking
Contact author(s)
santos merino @ uclouvain be
History
2016-05-01: received
Short URL
https://ia.cr/2016/420
License
Creative Commons Attribution
CC BY
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