一种适合大群组的完全匿名的短群签名  

Short group signature with full anonymity for large groups

作　　者：马海英[1] 王占君[2] 章雅娟[1] 

机构地区：[1]南通大学计算机科学与技术学院,江苏南通226019 [2]南通大学理学院,江苏南通226007

出　　处：《计算机应用研究》2009年第6期2173-2176,共4页Application Research of Computers

基　　金：江苏省自然科学基础研究资助项目(08KJB520009);南通大学引进人才科研启动基金资助项目(03080053;03080043)

摘　　要：基于CS98加密方案和SDH假设,提出一种新的三元组(A,x,y)的零知识证明协议,并基于此协议构造了一种可证明安全的短群签名方案。该方案具有IND-CCA2完全匿名性,允许新成员动态加入,并且群管理员不能伪造任何成员的签名,具有不可陷害性。签名长度仅为1 534 bit。This paper presented a new zero-knowledge protocol for the triple （A,x,y）, which was based on CS98 encryption and SDH assumption. Using this protocol as a building block, constructed a new short group signature, which was provable secure. The scheme was of IND-CCA2-full-anonymity,allowed new members to join in the group dynamically, and group manager couldn＇ t forge any member＇ s signature, then the scheme satisfied non-frameability. The signature is only 153 4 bit in size.

关 键 词：短群签名 完全匿名性 CS98加密 IND—CCA2安全 不可陷害性 

分 类 号：TP393.08[自动化与计算机技术—计算机应用技术]