Abstract: For the security problem and the low efficiency of signature schemes under existing public key cryptography system, combining with the concept of certificate-based proxy signature presented by Li et al., gives a definition of certificate-based proxy blind signature, and a new certificate-based proxy signature is proposed. Finally, an analysis of performance for the scheme is presented, the results show that the scheme can not only meet all required security properties of a proxy blind signature scheme, but the efficiency of signature algorithm is also improved, which is more suitable for practical applications.

Key words: certificate-based, proxy blind signature, random oracle model

摘要： 针对已有公钥密码系统下代理盲签名的安全性问题及签名方案效率不高的问题，结合Li等人基于证书代理签名的概念，给出了基于证书代理盲签名的定义，并提出一个新的基于证书代理盲签名方案。给出方案的性能分析，分析结果表明新方案不仅能满足代理盲签名的所有安全性质，且签名算法效率也有所提高，更适合实际应用。

关键词: 基于证书, 代理盲签名, 随机预言模型