摘要
现存的群签名方案要么不考虑群成员的废除问题[1,2,4,5,7,10],要么存在计算量与被废除成员线性相关的缺点[3],是低效的,要么是不安全的[5]。考虑到RSA是应用最广泛的公钥密码体制之一,首次基于RSA设计出一种群签名方案。新方案在不改变其他有效群成员的密钥的情况下,可以安全地增加或撤消群成员;可以高效地实现成员的增加或撤消;可以适合大的群体使用;具有基于大数分解困难性的安全性。
The current group signature scheme either neglects the problem, or is low efficient , or is insecure. Considering RSA is one of the most popular public key cryptogram algirithms, a new group signature scheme completely based on RSA is proposed. The new scheme safely add or delete members while keeping the secret keys of the other available members unchanged, it efficiently realize the add or delete process, it fits big groups and its security relies on the difficulty to disassemble a big number.
出处
《计算机工程与设计》
CSCD
北大核心
2006年第16期2955-2957,共3页
Computer Engineering and Design
基金
国家自然科学基金项目(10471078)
教育部高等学校博士学科点专项科研基金项目(20040422004)
