【作者】 刘灵；

【导师】 周尚波； 张宏；

【作者基本信息】 重庆大学 ， 计算机技术， 2008， 硕士

【摘要】 随着计算机技术和网络技术的逐渐成熟,政府的办公和行政方式也在发生着变化,电子政务就是在这样的背景下产生并迅速的发展起来。世界各国都将电子政务看作世界新一轮综合国力竞争的一个重要因素。电子公文是电子政务的重要组成部分,是政府意志的载体和行政的重要手段。在互联网这样一个开放的环境下保障电子公文传输的安全性和保密性就成为了一个亟待解决的问题。自从1985年提出将椭圆曲线应用到密码学当中,对椭圆曲线密码的研究一直是个热点。由于其安全性高、计算量小、带宽要求低、存储量小、处理速度快等特点,在椭圆曲线密码体制的研究上涌现出了大量的成果。椭圆曲线密码体制也是本文的核心。本文在对相关数学理论和问题的研究基础上,针对电子公文的传递与发布过程中可能出现的安全问题的分析,将椭圆曲线数字签名引入这个过程中来加强公文传输过程的安全性。结合椭圆曲线密码体制的优点和公文传输的方式,设计出一套用椭圆曲线数字签名进行数字签名和身份认证的方案应用到政府的公文传递和文件发布。并且对这一方案的安全性和抗攻击性进行了分析,说明了这种方案在公文传输中的实用性和合理性。更多还原

【Abstract】 As Internet spreads into many fields and the technology of computer science has become mature, the government behaviors and ways of administration are changed. E-government is a new thing under such background. Every country considers E-government as one of the most important elements of integrative powers of nation. The electronic archives are one of the most important parts of E-government, and they are also carriers of the government purpose and main ways of government reign. How to ensure the safety of the electronic archives delivery and the security of the government information in the opening environment of Internet is an emergent problem.The research on ECC has been a hot-spot in recent years after Neal Koblitz and V.S.Miller put forward the elliptic curve theory can be used to cryptography. The ECC has advantages such as high security, easy calculation, low band request, low memory and demand and quick speed, because of which lots of productions appeared. The ECC is also the core of this thesis.In this article, based on the research done to the pertinent math theorems, according to the analysis on the security problems in the progress of the electronic archives delivery, the Elliptic Curve Digital Signature Algorithm is applied to enhance the security of electronic archives delivery. Combining the advantages of ECC and the way of the archives delivery, a set of system, in which the ECC is applied to digital signature and identification, is designed and used to the government file delivery and promulgation. At the same time, the attack resistance and security degree of this system are analyzed. It is proved to be useful and reasonable that the ECDSA applied to the electronic archives delivery.更多还原