Abstract:

Combined with certificateless public key cryptography with proxy blind signature, a certificateless proxy blind signature scheme is proposed. The scheme enjoys the blindness properties and untraceability, and solves the escrow problem and retains the merits of blind signature without certificate. The new scheme is proved to be secure against existential forgery on adaptively chosen message attack and chosen identity attack.

Key words: certificateless public key cryptography, proxy blind signature, random oracle model, untraceability, unforgeability

摘要：

将无证书公钥密码体制和代理盲签名相结合，利用两者的优点，提出一个无证书代理盲签名方案。该方案具有盲签名的盲性以及不可追踪性，同时消除了对证书的依赖，能够解决密钥的托管问题。在适应性选择消息及适应性选择身份攻击下，该方案可以体现出存在性不可伪造的特点，能够有效抵抗公钥替换攻击。

关键词: 无证书公钥密码体制, 代理盲签名, 随机预言机模型, 不可追踪性, 不可伪造性

CLC Number: 

• TP311.52