A Note on Related-Tweakey Impossible Differential Attacks

ePrint Report: A Note on Related-Tweakey Impossible Differential Attacks

Xavier Bonnetain, Virginie Lallemand

In this short note we review the technique proposed at ToSC 2018 by Sadeghi et al. for attacks built upon several related-tweakey impossible differential trails. We show that the initial encryption queries are improper and lead the authors to misevaluating a filtering value in the key recovery phase. We identified 4 papers (from Eurocrypt, DCC, ToSC and ePrint) that follow on the results of Sadeghi et al., …

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