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Title:
A note on the security of threshold implementations with d+1 input shares
Authors: Santos Merino Del Pozo, 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.
ePrint: https://eprint.iacr.org/2016/420
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