International Association for Cryptologic Research

International Association
for Cryptologic Research

IACR News item: 11 August 2020

Rick Boivie, Charanjit S. Jutla, Daniel Friedman, Ghavam Shahidi
ePrint Report ePrint Report
We provide a novel electro-magnetic (EM) side-channel resistant symmetric-key authentication mechanism for small devices that uses a Benes network to permute the on-board authentication-key before computing a MAC of a challenge with the key. The permutation itself is derived from the challenge using a hash function acting as a random oracle. The solution has interesting applications such as forgery detection of currency bills.
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