一种新型的群签名方案  

A New Type of Group Signature Scheme

作　　者：钟军[1] 何大可[1] 

机构地区：[1]西南交通大学信息科学与技术学院,成都610031

出　　处：《电子与信息学报》2008年第5期1214-1217,共4页Journal of Electronics & Information Technology

基　　金：现代通信国家重点实验室基金(51436050404QT2202)资助项目

摘　　要：该文在BB短签名方案的基础上演化出一个新的签名方案,并由此构建了一个新的群签名方案。新的群签名方案的安全性建立在随机预言机模型下,q-SDH假设和判定Diffie-Hellman假设之上的。该文提出的群签名方案的签名长度比BBS的短群签名方案的签名长度略长,但在为群成员发放资格证书以及成员私钥时,不需要可信任第三方的参与。On the basis of BB short signature scheme, this paper derives a new signature scheme, from which a new kind of group signature scheme is constructed. The security of the new group signature scheme is based on the q- SDH assumption and the decisional Diffie-Hellman assumption in the random oracle model. The length of the new group signature is a little longer than that of BBS short group signature. However, in the group signature scheme, giving certificates and private keys to group members do not need any third trusted party, while in BBS short group signature scheme it does need.

关 键 词：群签名 BB短签名 q-SDH假设 双线性对 知识签名 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]