基于中国剩余定理的前向安全群签名  

Forward secure group signature scheme based on Chinese remainder theorem

作　　者：欧海文[1] 张沙蚌[1,2] 

机构地区：[1]北京电子科技学院信息安全与保密重点实验室,北京100070 [2]西安电子科技大学通信工程学院,西安710071

出　　处：《计算机应用》2011年第A01期98-100,共3页journal of Computer Applications

基　　金：北京市自然科学基金资助项目(4063040)

摘　　要：基于中国剩余定理提出了一个前向安全群签名方案,同时解决了成员撤销和密钥泄露问题。该方案在不改变其他有效成员的私钥和群公钥的长度的情况下,可以安全地增加或删除群成员,且每次增加和删除群成员只需简单的指数运算。同时对该方案进行了安全性分析,结果表明该方案具有前向安全性、可撤销性、不可伪造性、防陷害性、抗联合攻击等群签名方案所具有的安全性。A new forward secure group scheme based on Chinese Remainder Theorem（CRT） was proposed in this paper,while resolving revocation of membership and key exposure.The group center can safely add or remove members while keeping the secret keys of the other legitimate group members and the length of the group center＇s public key unchanged.When adding or removing a member only a simple exponentiation is needed.The security of the scheme was also analyzed.It is shown that the presented scheme has forward security,revocability,unforgeability,exculpability,coalition-resistance and other security which group signature requires.

关 键 词：群签名 前向安全 成员撤销 中国剩余定理 

分 类 号：TP309.2[自动化与计算机技术—计算机系统结构]