Applications of Undeniable Signature Schemes

Online applications such as e-auction, e-voting, and e-cash require common security properties such as integrity, unforgeability, confidentiality, non-repudiation, authentication, and anonymity. In this paper, besides identifying the security properties needed by these three applications, we also discuss the importance of access control. We show that undeniable signature schemes and its variants fulfil the security requirements and access control needed by the applications. We also propose a generic method to combine an undeniable signature scheme with a trapdoor function for constructing the applications mentioned above.