计算机工程与应用 ›› 2011, Vol. 47 ›› Issue (9): 75-76.

• 网络、通信、安全 • 上一篇    下一篇

一个代理盲签名方案的安全性分析

王永峰1,张建中2   

  1. 1.运城学院 应用数学系,山西 运城 044000
    2.陕西师范大学 数学与信息科学学院,西安 710062
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-03-21 发布日期:2011-03-21

Security analysis of proxy blind signature scheme

WANG Yongfeng1,ZHANG Jianzhong2   

  1. 1.Department of Mathematics,Yuncheng University,Yuncheng,Shanxi 044000,China
    2.College of Mathematics and Information Science,Shaanxi Normal University,Xi’an 710062,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-03-21 Published:2011-03-21

摘要: 对一个具有消息恢复的指定接收者的代理盲签名方案提出安全分析,指出方案存在以下安全缺陷:由于模运算错误,使得方案不满足可验证性;对代理签名者而言,不满足方案的盲性;代理签名者可以生成对任意消息的有效签名,即方案不满足不可滥用性。

关键词: 消息恢复, 指定验证者, 强盲签名

Abstract: Cryptanalysis of a designated verifier proxy blind signature scheme with message recovery shows that it exists follow security flaws:Verifiability of the signature scheme is not valid in view of error in module computation;On the point of proxy signer,the scheme doesn’t meet the blind nature;the proxy signer can sign any message,that is to say the scheme doesn’t meet unmisusability.

Key words: message recovery, designated verifier, strong blind signature