计算机工程与应用 ›› 2009, Vol. 45 ›› Issue (30): 113-115.DOI: 10.3778/j.issn.1002-8331.2009.30.034

• 网络、通信、安全 • 上一篇    下一篇

对一个基于身份的代理签密方案的分析及改进

徐青慧1,谢 琪1,2   

  1. 1.杭州师范大学 理学院,杭州 310036
    2.杭州师范大学 研究生学院,杭州 310036
  • 收稿日期:2008-06-16 修回日期:2008-09-08 出版日期:2009-10-21 发布日期:2009-10-21
  • 通讯作者: 徐青慧

Analysis and improvement on forward secure ID-based proxy-signcryption scheme

XU Qing-hui1,XIE Qi1,2   

  1. 1.School of Science,Hangzhou Normal University,Hangzhou 310036,China
    2.Graduate School,Hangzhou Normal University,Hangzhou 310036,China
  • Received:2008-06-16 Revised:2008-09-08 Online:2009-10-21 Published:2009-10-21
  • Contact: XU Qing-hui

摘要: 给出了三种攻击并指出于刚等人提出的前向安全的基于身份的代理签密方案是不安全的。他们的方案无法抵抗修改代理证书攻击、修改代理人攻击和代理关系的转换攻击。然后,提出了一种安全的改进方案。

关键词: 代理签密, 基于身份, 前向安全, 代理关系转换

Abstract: Three attacks on Yu Gang et al’s scheme to show that their forward secure proxy-signcryption scheme based on identity is insecure.Their scheme cannot resist revising proxy warrant attack,revising proxy signer attack and proxy relationship inversion attack.Then,an improved scheme is proposed.

Key words: proxy-signcryption, ID-based, forward secure, proxy relationship inversion

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