一种新的基于身份的代理盲签名方案的分析与改进

发布时间：2018-01-21 08:13

本文关键词： 数字签名代理盲签名双线性映射无证书公钥密码体制　出处：《信阳师范学院》2014年硕士论文　论文类型：学位论文

【摘要】：随着计算机网络技术和通信技术的飞速发展,社会的信息化程度越来越高.政治、军事、外交、商业、金融等领域,特别是电子贸易、电子支票、电子购物、电子出版以及知识产权保护等方面都与信息安全息息相关. 信息安全事关国家安全、社会稳定和人民福祉；信息安全与军事、外交、政治、经济、金融,甚至老百姓的日常生活关系越来越密切,信息安全的重要性亦与日俱增. 目前,密码学技术己成为解决信息安全问题的一个核心技术,不仅用于对数据进行加密而抵御敌手的窃密行为等传统领域,而且还用于个人和企业对数字信息的真实性认证、产品防伪等各种与信息安全相关的领域. 数字签名作为信息安全诸多应用领域的核心技术之一,在现代事务处理中逐渐取代了传统的以书面文件为基础的手写签名,特别是在电子政务、电子商务贸易、银行金融系统、网络订购票系统、电子邮件收发、电子出版以及知识产权保护等方面有着广泛用途. 在实际工作和生活中,普通的数字签名已不能适应各种特殊需求,于是各种具有特殊性质的数字签名应运而生,例如,代理签名就是一种既具有基本数字签名功能,又具有代理功能的特殊数字签名；另一种盲签名也是一种具有特殊性质的数字签名,它能使被签消息的内容对签名人保密,并且签名者无法由签名追踪到信息内容,保证被签消息的安全.代理签名和盲签名分别在电子商务和电子选举中具有举足轻重的地位. 代理盲签名集聚了二者的优势,在现代信息社会具有重要的应用价值,一经提出便受到密码学界的广泛关注.代理盲签名方案兼具代理签名和盲签名的双重特性,即代理签名人不仅可以接受原始签名人的授权委托代理其完成数字签名,而且代理签名人还能在不知道被签消息内容的情况下完成签名,进而保证被签消息的隐蔽性. 本文通过分析一种新的基于身份的代理盲签名方案的部分安全隐患,提出了一种基于无证书公钥密码体制的更安全更高效的代理盲签名方案.较之干原方案,新方案不存在公钥证书的管理和密钥托管的问题,安全性得到了极大提高.
[Abstract]:With the rapid development of computer network technology and communication technology, the information level of society is becoming more and more high. The fields of politics, military affairs, diplomacy, commerce, finance and so on, especially electronic trade, electronic check, electronic shopping. Electronic publishing and intellectual property protection are closely related to information security. Information security concerns national security, social stability and the well-being of the people; Information security is more and more closely related to military, diplomatic, political, economic, financial and even ordinary people's daily life, and the importance of information security is also increasing. At present, cryptography technology has become a core technology to solve the problem of information security. It is not only used to encrypt the data and resist the stolen behavior of the enemy and other traditional fields. It is also used by individuals and enterprises to authenticate the authenticity of digital information, product security and other fields related to information security. Digital signature, as one of the core technologies in many application fields of information security, has gradually replaced the traditional handwritten signature based on written document in modern transaction processing, especially in e-government. E-commerce, banking and finance systems, online booking systems, e-mail sending and receiving, e-publishing and intellectual property protection are widely used. In the actual work and life, the ordinary digital signature can no longer adapt to various special needs, so a variety of digital signatures with special properties came into being, such as. Proxy signature is a special digital signature with both basic digital signature function and proxy function. Another kind of blind signature is also a digital signature with special properties, which can make the content of the signed message confidential to the signer, and the signer can not trace the information content by the signature. Proxy signature and blind signature play an important role in electronic commerce and electronic election respectively. Proxy blind signature has the advantages of both and has important application value in modern information society. The proxy blind signature scheme has the dual characteristics of proxy signature and blind signature. That is the proxy signer can not only accept the authorization of the original signer to delegate the proxy to complete the digital signature but also the proxy signer can complete the signature without knowing the content of the signed message. In turn, to ensure that the message is signed in the concealment. This paper presents a more secure and efficient proxy blind signature scheme based on certificate-free public key cryptosystem by analyzing some security risks of a new identity-based proxy blind signature scheme. The new scheme does not have the problems of public key certificate management and key escrow, and the security is greatly improved.
【学位授予单位】：信阳师范学院
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN918.91

【参考文献】