论文标题:代理签名方案的研究
Research on Proxy Signature Schemes
论文作者
论文导师 王尚平,论文学位 硕士,论文专业 应用数学
论文单位 西安理工大学,点击次数 103,论文页数 50页File Size2313K
2006-03-01论文网 http://www.lw23.com/lunwen_5431137/
proxy signatures; bilinear pairings; proxy blind signatures; threshold proxy signatures; an electronic voting scheme
数字签名是密码学中重要的组成部分，是信息完整性、真实性的理论基础。随着计算机网络的不断发展，适用于各种不同情况的数字签名相继产生，各种特殊的数字签名使得数字签名的应用更加深入和广泛。代理签名作为新型的签名技术已在电子支付系统、移动代理系统、电子投票、电子拍卖、电子商务和网络安全等方面有广泛的应用前景。本文主要研究了：代理数字签名的理论与电子投票方案。主要研究结果如下： 1．总结了代理数字签名研究的现状和进展，并分析了基于双线性对的代理签名、代理盲签名、门限代理签名等各种签名方案； 2．提出了一个基于双线性对的代理签名方案，新的方案在CDHP问题困难的假设下是不可伪造的，并且具有强的安全性； 3．提出了一个无可信第三方的自组织群体中匿名表决方案，该方案允许参与者对某问题匿名表决，安全地计算表决结果，参与者之间也不需要任何交互。该表决协议很容易转化为一个匿名的门限签名方案。
Digital signatures, one of the most important components of cryptography, are the theoretical basis of protecting the integrity and authenticity of information. With the development of the internet, special kinds of digital signatures, which are based on different applications, have been used widely and deeply in practice. As a new kind of singing technology, proxy signature has been applied to the electronic paying system, mobile agent system, electronic voting, electronic auction, electronic commerce and the security of the internet. In the paper, the theory of proxy digital signature and an electronic voting Scheme are studied. The main results are the following:1. The overview of the study of proxy digital signature is presented. Based on bilinear pairings, signing schemes which include proxy signatures, proxy blind signatures, and threshold proxy signatures are analyzed.2. A new proxy signature scheme based on bilinear pairing is proposed, which is unforgeable under CDHP assumption and has strong security.3. An anonymous voting scheme for self-organized group without trusted third party is put forward. The scheme allows participants to anonymously vote on some issue and to securely compute the result of the vote without any interaction among participants. Furthermore, the scheme is convenient to be converted into an anonymous threshold signature.
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