摘要： 严亚俊等人提出了一种盲群签名方案，并称经过安全性分析是有效的，但是经过认真分析，该方案可以被伪造攻击：任何一个群成员可以伪造签名，通过验证而使群权威无法识别。该文提出了一种有效的伪造攻击方案，给出了原方案被攻击的原因。

关键词: 离散对数, 盲群签名, 伪造攻击

Abstract: Yan Yajun proposed a blind group signature scheme and claimed that it is efficient. However, it is carefully analyzed and found that it could be forgery attacked. Any one of the group members can make forgery signature, which can be verified efficient but can not be open by the group authority. This paper proposes an effective forgery attack scheme, and the reason is also be given.

Key words: discrete algorithmic, blind group signature, forgery attack

中图分类号: 

• TN918.1