Deniable ring signature scheme based on the ISRSAC digital signature algorithm

Abstract

This article introduces a deniable ring signature scheme within the framework of a ring signature protocol, which allows a member of the ring to assert or deny their role as the signature’s originator without the involvement of a trusted third party. Deniable ring signatures find applications in various scenarios where balancing privacy protection with supervised oversight is crucial. In this work, we present a novel deniable ring signature scheme based on the ISRSAC digital signature, tailored for environments with regulatory requirements, empowering regulators to hold malicious signers accountable. We formally validate the scheme’s correctness, unforgeability, anonymity, traceability, and non-frameability through rigorous proofs. Additionally, we conduct a comparative analysis of the communication and computational overheads associated with our proposed scheme, demonstrating its superiority in practical scenarios such as electronic auctions and anonymous reporting mechanisms.