一个安全的群签名方案  

A Secure Group Signature Scheme

作　　者：田金兵[1] 刘古胜[2] 

机构地区：[1]海南师范大学初等教育系,海南海口571158 [2]荆楚理工学院数理系,湖北荆门448200

出　　处：《襄樊学院学报》2007年第8期35-38,共4页Journal of Xiangfan University

摘　　要：基于LRSW问题,以双线性映射为工具,提出一个新的群签名方案.方案由两个可信机构分别担当群主管GM和撤消主管RM.群主管GM负责为欲加入本群的用户颁发证书,使其成为合法的群成员;撤消主管RM可以打开群签名以识别签名人的身份.群成员的证书生成是基于LRSW困难问题,具有防伪造性.群签名是一个被盲化了的成员证书关于消息m的非交互式的零知识证明,因此,本方案在安全性方面满足群签名方案的安全特性.Based on a problem introduced by Lysyanskaya,Rivest,Sahai and Wolf,using bilinear maps,this paper proposes a new group signature scheme.There exist two trusted frameworks such as group manager and revocation manager.The group manager issues a joining member a membership certificate,and the revocation manager is able to open a signature and reveal the identity of the signer.The membership certificate is unforgeable because it is based on LRSW problem.The group signature is a non-interactive zero-knowledge proof of a blinded membership certificate on the message m.Therefore,the group scheme proposed in this paper is in possession of all properties of security that a good group signature scheme should hold.

关 键 词：群签名 知识签名 LSRW问题 

分 类 号：TN918[电子电信—通信与信息系统]