计算机工程与应用 ›› 2009, Vol. 45 ›› Issue (28): 112-114.DOI: 10.3778/j.issn.1002-8331.2009.28.033

• 网络、通信、安全 • 上一篇    下一篇

基于身份的代理签名方案

卓泽朋1,魏仕民2   

  1. 1.淮北煤炭师范学院 数学科学学院,安徽 淮北 235000
    2.淮北煤炭师范学院 计算机科学与技术学院,安徽 淮北 235000
  • 收稿日期:2008-05-27 修回日期:2008-09-11 出版日期:2009-10-01 发布日期:2009-10-01
  • 通讯作者: 卓泽朋

Identity-based proxy signature scheme

ZHUO Ze-peng1,WEI Shi-min2   

  1. 1.School of Mathematical Science,Huaibei Coal Industry Teachers College,Huaibei,Anhui 235000,China
    2.School of Computer Science and Technique,Huaibei Coal Industry Teachers College,Huaibei,Anhui 235000,China
  • Received:2008-05-27 Revised:2008-09-11 Online:2009-10-01 Published:2009-10-01
  • Contact: ZHUO Ze-peng

摘要: 辫群是一种非交换的无限群,该群中有许多困难问题是不可解的,如字问题、共轭问题和根问题等,利用这些困难问题可以去设计一些密码协议。介绍了辫群的基本概念、两个重要性质和辫群中的困难问题,在此基础上,利用辫群上的共轭查找问题构造了一个基于身份的代理签名,并对它的安全性进行了分析。

关键词: 代理签名, 辫群, 共轭问题

Abstract: The braid groups are infinite non-commutative group.The braid groups have many hard problems that can be utilized to design cryptographic primitives,for example the word problem,conjugacy problem,root problem.This paper proposes the identity-based proxy signature scheme using the conjugacy search problem in the braid groups which are believed to be hard problem,and its security is also analyzed.

Key words: proxy signature, braid group, conjugacy problem

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