数字签名软件的设计与实现.docVIP

数字签名软件的设计与实现 内 容 摘 要 计算机和网络技术的发展将人类带入信息化社会，随之而来的是倍受关注的信息安全问题。现代密码学已成为信息安全技术的核心，数字签名是现代密码学主要研究的内容之一。数字签名技术在身份识别和认证、数据完整性、抗抵赖等方面具有其它技术所无法替代的作用，它在电子商务和电子政务等领域有着极广泛的应用。 本论文首先探讨了数字签名的研究背景和意义。接着系统研究了数字签名的原理及其相关技术，包括密码技术、数字签名算法等。论文对HASH、DES、RSA等算法进行了详细的描述，并总结各个算法的优点和不足。通过对经典数字签名算法的分析比较，根据各个算法的优缺点，提出综合各个算法优点，同时又避免了它们各自的不足的数字签名实现方案。然后通过使用VC++环境实现数字签名在消息传递过程中的应用，更加深刻地了解其过程。 关键词：数字签名 密码学 RSA算法 A digital Signature Software’s Design and Implementation ABSTRACT Computer and network technology bring human beings into the information society, followed by a closely watched issue of information security. Modern cryptography, information security technology has become the core of modern cryptography, digital signature is the main component of the study. Digital Signature Technology in identification and authentication, data integrity, repudiation and so can not be replaced with other technical role, its areas of e-commerce and e-government has a very wide range of applications.  The paper first discusses the digital signature of the research background and significance. Then the digital signature system theory and its related technologies, including cryptography, digital signature algorithm and digital certificates. Paper on hash, DES and RSA algorithms described in detail, and summarizes the advantages and disadvantages of each method. Through the analysis of classical digital signature algorithm comparison, advantages and disadvantages of each algorithm, together the advantages of various algorithms proposed comprehensive, while avoiding the deficiencies of their own digital signature implementations. Then by using VC + + environment, digital signatures in the dialogue process the two messages were delivered applications, a more profound understanding of the process. Keywords：Digital signatureryptography RSA algorithm 目 录 一、绪论 1 （一）本文的主要研究内容 1 （二）本文研究的目的和意义 1 二、密码学简介 2 （一）密码学基本概念 2 （二）对称加密 3 （三）非对称加密 3 （四）混合密码系统 4 （五）哈希函数 5 三、数字签名的概念 6 （一）数字签名的定义 6 （二）数字签名的原理 6 （三）数字签名的作用与