Weak-Diffusion Structure: Meet-in-the-Middle Attacks on Sponge-based Hashing Revisited

ePrint Report: Weak-Diffusion Structure: Meet-in-the-Middle Attacks on Sponge-based Hashing Revisited

Lingyue Qin, Boxin Zhao, Jialiang Hua, Xiaoyang Dong, Xiaoyun Wang

Besides the U.S. NIST standard SHA-3(Keccak), another sponge-based primitive Ascon was selected as the NIST standard for lightweight applications, recently. Exploring the security against attacks on the sponge-based hash functions is very important. At EUROCRYPT 2023, Qin et al. introduced the MitM preimage attack framework and the automatic tools for Keccak, Ascon, and Xoodyak.


In this paper, we extend Qin …

applications ascon attack attacks automatic collision eprint report eurocrypt framework functions hash hash functions hashing important mitm mitm attack nist report security sha-3 standard tools