We analyse the security of some variants of the CFS code-based digital signature scheme. We show how the adoption of some code-based hash-functions to improve the efficiency of CFS leads to the ability of an attacker to produce a forgery compatible to the rightful user's public key.
@article{arxiv.2112.00429,
title = {Security issues of CFS-like digital signature algorithms},
author = {Giuseppe D'Alconzo and Alessio Meneghetti and Paolo Piasenti},
journal= {arXiv preprint arXiv:2112.00429},
year = {2024}
}