计算机工程与应用 ›› 2007, Vol. 43 ›› Issue (9): 151-153.

• 网络、通信与安全 • 上一篇    下一篇

安全增强的存在特权集门限群签名方案

王泽成 斯桃枝 李志斌   

  1. 华东师范大学信息学院 上海第二工业大学计算机学院 华东师范大学网络信息安全研究所
  • 收稿日期:2006-04-20 修回日期:1900-01-01 出版日期:2007-03-21 发布日期:2007-03-21
  • 通讯作者: 王泽成

A Security Improved Threshold Group-Signature Schemes with Privilege Subsets

  • Received:2006-04-20 Revised:1900-01-01 Online:2007-03-21 Published:2007-03-21

摘要: 对一类存在特权集的门限群签名方案进行安全性分析,指出了其中的设计错误;提出了修改方案;增加了身份识别函数;增强了追踪签名人的能力;并对新方案进行了安全性分析。

关键词: 门限群签名, 秘密共享方案, 身份识别函数

Abstract: The security of a scheme called “a group of threshold group-signature schemes with privilege subsets” is analyzed and the error in designing is found. An amending scheme is proposed, in which the error is corrected and the ability to trace signers is enhanced by adding a identity identification function. The security of the new scheme is analyzed which proves the scheme is secure.

Key words: threshold group-signature, secret sharing scheme, identity identification function