摘要： 1998年Lee 和Chang 提出了一种基于离散对数问题的非交互的群签名方案。Tseng-Jan；李、张、刘、杨；敖、陈、白分别给出了改进方案。该文指出Lee-Chang方案及所有派生类方案都不具备防伪造性。它们都可以用类似的伪造签名方法，产生一个不可跟踪的群签名。
关键词:
群签名,
离散对数,
匿名
Abstract: In 1998,Lee and Chang proposed a group signature scheme based on the discrete logarithm problem. Lately Seng-Jan; Li, Zhang, Liu, Yong; and Ao, Chen, Bai give respectively new improved schemes based on Lee-Chang scheme. This paper shows that these schemes derived from Lee-Chang are not secure and untraceable group signatures are given by similar forery attacks.
中图分类号:
斯桃枝,李志斌,王泽成,王文龙. Lee-Chang及派生类群签名方案的安全性分析[J]. , 2003, 29(20): 108-110.
SI Taozhi 1, 2, LI Zhibin 2, WANG Zecheng 2,3, WANG Wenlong 2,4. Cryptanalysis of Lee-Chang Group Signature and Its Derivatives[J]. , 2003, 29(20): 108-110.