[Resource Topic] 2019/374: Probability 1 Iterated Differential in the SNEIK Permutation

Welcome to the resource topic for 2019/374

Title:
Probability 1 Iterated Differential in the SNEIK Permutation

Authors: Léo Perrin

Abstract:

SNEIK is a permutation at the core of a submission to the NIST lightweight cryptography project. In this note, we exhibit an iterated probability 1 differential in this permutation. However, it is still unclear if this differential can be used to construct attacks against the permutation in a mode, e.g., against the hash function SNEIKHA. We also suggest a simple fix: adding a 32-bit rotation in one tap prevents this issue.

ePrint: https://eprint.iacr.org/2019/374

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