Preimage Attacks on Reduced-Round Ascon-Xof

ePrint Report: Preimage Attacks on Reduced-Round Ascon-Xof

Seungjun Baek, Giyoon Kim, Jongsung Kim

Ascon, a family of algorithms that supports authenticated encryption and hashing, has been selected as the new standard for lightweight cryptography in the NIST Lightweight Cryptography Project. Ascon’s permutation and authenticated encryption have been actively analyzed, but there are relatively few analyses on the hashing. In this paper, we concentrate on preimage attacks on Ascon-Xof. We focus on linearizing the polynomials leaked by the hash value to …

algorithms ascon attacks cryptography encryption eprint report family hashing kim nist project report standard