Security issues of CFS-like digital signature algorithms
arXiv:2112.00429v1
Originality Synthesis-oriented
AI Analysis
This work addresses security risks in digital signature algorithms for cryptography applications, but it appears incremental as it focuses on specific variants of an existing scheme.
The authors analyzed security vulnerabilities in variants of the CFS code-based digital signature scheme, finding that using certain code-based hash-functions for efficiency improvements allows attackers to produce forgeries compatible with legitimate public keys.
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.