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对代理盲签名体制的攻击与改进
引用本文:陈春华,徐秋亮.对代理盲签名体制的攻击与改进[J].计算机工程与设计,2007,28(18):4354-4356.
作者姓名:陈春华  徐秋亮
作者单位:1. 山东大学,计算机科学与技术学院,山东,济南,250063;滨州职业学院,山东,滨州,256624
2. 山东大学,计算机科学与技术学院,山东,济南,250063
基金项目:国家自然科学基金 , 山东省自然科学基金
摘    要:代理盲签名方案在实际应用中存在以下安全问题:首先是在代理签名者和消息拥有者的会话阶段容易受到恶意攻击,攻击者能使代理签名者在毫不知情的情况下对任意消息进行代理盲签名,这损害了原始签名者和代理签名者的利益;其次是代理签名者对签名权的滥用.给出了一种具体的攻击方法,并结合一具体的代理盲签名方案,通过运用授权证书结合身份认证给出了对此类攻击的防范措施,使代理盲签名体制的安全性得到了加强.

关 键 词:数字签名  代理签名  盲签名  代理盲签名  攻击者  代理盲签名  签名体制  改进  schemes  proxy  blind  signature  improvement  加强  安全性  防范措施  身份认证  授权证书  运用  结合  攻击方法  利益  原始签名者  损害  情况  攻击者  恶意攻击
文章编号:1000-7024(2007)18-4354-03
修稿时间:2006-10-24

Attack and corresponding improvement to proxy blind signature schemes
CHEN Chun-hua,XU Qiu-liang.Attack and corresponding improvement to proxy blind signature schemes[J].Computer Engineering and Design,2007,28(18):4354-4356.
Authors:CHEN Chun-hua  XU Qiu-liang
Affiliation:1. School of Computer Science and Technology, Shandong University, Jinan 250063, China; 2. Binzhou Vocational College, Binzhou 256624, China
Abstract:There are some problems in security when proxy blind signature schemes are used in practice. Firstly, proxy signature scheme would be attacked maliciously during the phase of communication between the proxy signer and the message owner. Attackers can make the proxy signer sign blindly on any document without any awareness of the proxy signer, which jeopardize the interests of both the proxy signer and the original signer. Secondly, there is the possibility for the proxy signer to abuse the right to sign. A specified way of attacking is given, and the precautions and measures are given by employing letter of authorization and identification attestation combining with a specific blind signature scheme, which reinforce the security of proxy blind signature scheme.
Keywords:digital signature  proxy signature  blind signature  proxy blind signature  attacker
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