公钥密码原理及其应用

公钥密码原理及其应用
 
摘要:密码可以分为分组密码和公钥密码，随着保密通信进入计算机网络时代。分组加密逐渐暴露出它的固有弱点，而公钥密码变的日趋重要。本介绍了两个公钥密码技术（RSA,ECC)，从密码学基础、密码学的历史及发展，详细地叙述了ECC算法和RSA算法的数学理论基础及其实现细节。通过1个运用实例，演示了RSA公钥加密在现实生活的所起的作用。最后分别概括了ECC算法和RSA算法的特点，并对这两种不同的公钥加密方法进行了比较，指出了RSA的不足。以vc++为编程工具实现了1个基本的RSA公钥密码注册机系统，本系统运用了RSA公钥加密能进行数字签名这1功能，通过对输入的用户名利用RSA算法进行加密和解密，从而能保证用户运用该系统进行有效的注册。RSA加解密注册机系统的界面比较友好、功能明了、操作简单。
关键词：加密；ECC；RSA；解密

The Therory and Application of Public Key
 
Abstract:There are two types technology for encrypting, One is grouping encrypt and the other is common keycode encrypt.The first one is discovered its intrinsic flaw as the cryptology entering in net communicantion period. However the later is geting more and more important. This paper introduces two public keycode encrypt technicals (RSA ECC) , At first ,its introduced the history and the development of the cryptology , particuly incite the mathmatics theory of the ECC and the RSA. Then it is introduced the arithmetic of the ECC and RSA with detail of realizing.It is demonstrate the function of RSA ,Which is used to realism by a exercise example. At last did the summary to the characteristics of ECC algorithm and RSA algorithm respectively. Compared them ,so get the weak points of RSA.This system regards vc++ as the programming tool, It has realized a basic RSA common key register system.By encrypting and decrypting the username,The system use the digital underwriter function of RSA to guarante the user to register right .Systems interface very friendly, function is clear as your first glance.It is easy to use.

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