Welcome to the resource topic for 2025/939
Title:
On the security of one certificateless aggregate signature scheme with dynamic revocation in vehicular ad-hoc networks
Authors: Zhengjun Cao, Lihua Liu
Abstract:We show that the certificateless signature scheme [Veh. Commun. 47: 100763 (2024)] is insecure, because an adversary can launch forgery attack for any message. The signer’s certificateless public key is not tightly bound to the system public key. The inherent flaw results in that the adversary can find an efficient signing algorithm functionally equivalent to the valid signing algorithm. The findings in this note could be helpful for newcomers who are not familiar with the designing techniques for certificateless signatures.
ePrint: https://eprint.iacr.org/2025/939
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