Designated Verifier Proxy Signature Scheme with Multi-warrant in the Standard Model

摘要

In a designated verifier proxy signature scheme, the original signer can delegate his or her signing capability to the proxy signer in such a way that the latter can sign messages on behalf of the former, but the validity of the resulting signatures can only be verified by the designated verifier. In this paper, we firstly proposed the notion of Designated Verifier Proxy Signature with Multi-warrant (DVPSMW). We formalize the security model of DVPSMW and construct a concrete scheme which is probably secure in the standard model (without random oracles). Furthermore, the security of our proposed scheme is based on the hardness of the Gap Bilinear Diffie-Hellman Problem.