摘要： 代理盲签名方案是代理签名和盲签名相结合的一种签名方案。针对谷利泽等人提出的代理盲签名方案以及在电子货币中的应用(计算机工程, 2005年第16期)，提出对该方案的分析，采用构造的方法，结果证明这个代理盲签名方案不安全，不满足代理盲签名方案不可伪造和不可链接的特性，该方案不能应用到电子货币和电子投票系统中，否则系统是不安全的。

关键词: 代理签名, 盲签名, 电子货币, 伪造性, 链接性

Abstract: A proxy blind signature scheme is a signature which combines the properties of proxy signature and blind signature. Gu et al. presents a proxy blind signature scheme and its application to Electronic Cash. This paper gives the security analysis of the proxy blind signature scheme with the method of construction. It shows that Gu et al.’ proxy blind signature scheme is not secure. The scheme does not satisfy the properties of unforgeability and unlinkbility. So the poxy blind signature can not be applied to Electronic Eash and Vote System. Otherwise, the system is not secure.

Key words: proxy signature, blind signature, e-cash, forgeability, linkability

中图分类号: 

• TN918