关键词: 基于身份密码学, 代理盲签名, 标准模型, 计算DH问题

Abstract: As the existed identity-based proxy blind signature schemes either not been proven secure formalized, or only provably secure in the Random Oracle model, an identity-based proxy blind signature scheme in the standard model is proposed. The basic signature algorithm of the new scheme employs the identity signature algorithm proposed by Paterson et al. Based on the standard security model proposed by Paterson et al, the adversary model of proxy signatures, and the security model for blind signatures, a standard security model for identity-based proxy blind signature is proposed. In this security model, the new scheme has been proven to meet unforgeable and blind, achieves provable security.

Key words: identity-based cryptography, proxy blind signature, standard model, computational Diffie-Hellman problem