一个动态群签名的实用性分析  

The Practical Analysis of a Project with Dynamic Group Signature

作　　者：高天亮[1] 夏清国[1] 王玺[1] 

机构地区：[1]西北工业大学计算机学院,西安710129

出　　处：《科学技术与工程》2011年第6期1222-1224,共3页Science Technology and Engineering

摘　　要：杨等人根据零知识证明,结合多项式的性质提出了一种动态群签名方案,并且证明该方案具有安全性。研究了杨等人的动态群签名方案,发现该方案存有以下问题:①在方案可行的情况下该方案存在成员能被管理员陷害的危险;②方案中用到的知识签名并不能正确验证出群成员知道某种秘密值;③签名中存在冗余的数据;④方案中的成员删除方法存在问题。由此得出结论该方案不具有实用性。According to zero-knowledge proof,combined with the nature of polynomials some people proposed a dynamic group signature scheme,and the scheme is secure.Dynamic group signature is studied and several problem is discovered in their project：① It is danger that member in the group can be framed by administrator if the project successful operation;② The knowledge signature used in that project can not validate some message;③ There are some redundance data in their signature;④ Some problem found in remove method.So this project is believed that not practical.

关 键 词：群签名 知识签名 动态群签名 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]