一种匿名代理签名方案的标记

journal6 ›› 2006, Vol. 27 ›› Issue (6): 31-33.

一种匿名代理签名方案的标记

（吉首大学数学与计算机科学学院,湖南吉首 416000）

出版日期:2006-11-25 发布日期:2012-06-28
作者简介:李宗寿(1972-)，男，湖南永顺人，吉首大学数学与计算机科学学院讲师，主要从事多媒体理论与技术、网络与信息安全研究.
基金资助:
湖南省自然科学基金资助项目（03JJY6017）

Remarks on a Proxy Signature with Proxy Signer Privacy Protection

(College of Mathematics and Computer Science,Jishou University,Jishou 416000,Hunan China)

Online:2006-11-25 Published:2012-06-28

摘要/Abstract

摘要：Fu-Kou-Xiao提出了一种匿名代理签名方案，其特点在于：用户的真实身份隐藏在原始签名人颁发的一个假名中；匿名性撤销时不需要可信第3方的参与.对该方案进行分析发现，原始签名人可以滥用代理授权，代理签名人也能够对自己所生成的有效代理签名进行事后否认,即不满足代理签名权力的不可滥用性和不可否认性.

关键词： 签名代理, 匿名代理签名, 匿名性撤销, 不可滥用性, 不可否认性

Abstract: A proxy signature with proxy signer privacy protection is proposed by Fu-Kou-Xiao,which has two characteristics listed as follows:the proxy signer’s identity is hidden behind an alias;the anonymity can be revoked when it is need to identify the proxy signer without a trusted third party.In this paper,the authors show that Fu-Kou-Xiao’s scheme is insecure.The original signer may use the capability of proxy signature freely.Also the proxy signer can repudiate a valid proxy signature generated by himself.Therefore,the scheme does not satisfy the properties of undeniable and misuse of the proxy signature.

Key words: proxy signature, proxy signature with proxy signer privacy protection, anonymity revocation, misuse of the proxy signature, strong undeniability

李宗寿, 李方军, 鲁荣波. 一种匿名代理签名方案的标记[J]. journal6, 2006, 27(6): 31-33.

LI Zong-Shou, LI Fang-Jun, LU Rong-Bo. Remarks on a Proxy Signature with Proxy Signer Privacy Protection[J]. journal6, 2006, 27(6): 31-33.