• 中国计算机学会会刊
  • 中国科技核心期刊
  • 中文核心期刊

J4 ›› 2012, Vol. 34 ›› Issue (12): 34-38.

• 论文 • 上一篇    下一篇

对一个高效的基于身份的代理盲签名方案的分析和改进

胡小明,王见,杨寅春   

  1. (上海第二工业大学计算机与信息学院,上海 201209)
  • 收稿日期:2011-10-10 修回日期:2012-04-13 出版日期:2012-12-25 发布日期:2012-12-25
  • 基金资助:

    国家自然科学基金资助项目(61103213);上海市教育委员会科研创新资助项目(10YZ201);上海高校选拔培养优秀青年教师科研专项基金资助项目(RYQ309002)

Analysis and Improvement of an Efficient  ID-Based Proxy Blind Signature Scheme

HU Xiaoming,WANG Jian,YANG Yinchun   

  1. (School of Computer & Information,Shanghai Second Polytechnic University,Shanghai 201209,China)
  • Received:2011-10-10 Revised:2012-04-13 Online:2012-12-25 Published:2012-12-25

摘要:

对一个基于身份的无可信私钥键生成中心(PKG)的代理盲签名方案进行了安全性分析,指出该方案不满足不可伪造性,并且存在着代理签名人可以窃取原始签名人私钥,以及普通用户伪造签名等安全缺陷。针对该方案存在的问题,本文提出了一个新的无可信PKG的代理盲签名方案,并对新方案的正确性和安全性进行了分析。

关键词: 盲签名, 代理盲签名, 基于身份, 无可信PKG, 安全分析

Abstract:

The paper analyzes the security of the identitybased proxy blind signature scheme with untrusted Private Key Generation (PKG) proposed by the scholar Nongqiang and points out that the scheme does not satisfy the property of unforgeability and there exist some security drawbacks such as proxy signer stealing the private of original signer and common user forging signature. Aiming at the existing problems of the scheme, a novel proxy blind signature scheme with untrusted PKG is proposed, and its correctness and security are analyzed

Key words: blind signature;proxy blind signature;identitybased;untrusted PKG;security analysis