基于身份的盲签名系统分析与应用-系统分析与集成专业论文.docx
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摘
摘 要
基于身份的盲签名系统研究与应用
摘 要
随着计算机网络的迅速发展,信息安全问题越来越受到人们的广泛关注。数 字签名作为解决信息安全问题的重要手段之一,在电子商务、军事和通信等领域 中得到广泛的应用。随着对数字签名研究的不断深入和通信技术的快速发展,简 单的模拟手写签名的数字签名已不能完全满足实际应用的需求,研究具有特殊性 质的数字签名已成为一个热门的研究方向,这也是本文的研究重点。
本文首先对基于身份的盲签名技术的相关理论进行研究,提出了一个新的基 于身份的盲签名方案,该方案使用了基于椭圆曲线构造的双线性配对,在同安全 级别下,可以使用较短的密钥达到相同的安全效果;接着详细分析了方案的正确 性、盲性和不可伪造性。
然后,针对大中型企事业单位对即时通讯系统和电子投票的安全性要求,结 合本文提出的盲签名方案,设计了一个基于数字签名的即时通讯系统。文中详细 阐述系统的整体功能框架,并对通信过程和电子投票过程进行了详细设计,同时 对系统性能进行分析。
最后,本文成功完成基于身份的数字签名即时通讯系统开发。文中详细介绍 了系统关键模块的实现过程,包括即时消息模块和电子投票模块,并给出了系统 运行测试评价。
系统较好的满足企事业单位的安全性要求,保护投票人的合法权益,达到通 信过程中的安全性要求,从而证明基于身份的盲签名技术方案具有较为广阔的应 用前景。
关键词: 盲签名,基于身份,即时通讯,电子投票
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Abstract
Research on Identity-Based Blind Signatures System and Its Application
Abstract
With the rapid development of computer networks, information security has attracted more and more attentions. Digital signature is an important solution for information security problem. It is widely applied in the field of electronic commerce, military, and communications. As the deepening of digital signature research and communication technology, the standard signature, which is a simple simulacrum of handwritten signature, can not still meet the need in practice, thus making research on the digital signatures with additional properties becomes a hot research field, it is also the emphasis of the paper.
Firstly, this paper studies the related theory of ID-based blind signature, a new ID-based blind signature scheme is presented based on bilinear pairings on elliptic curves, under the similar secure conditions, the scheme uses shorter length of private key to achieve the same security level. Then correctness of the proposed scheme is proved, and blindness and unforgeablility are also discussed in detail.
Then, according to the security requirement of large and medium-sized enterprises on instant communication system and electronic voting, an instant communication system is designed based on the proposed blind signature. The general function framework of the
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