DES

椭圆曲线的实现(ECC)，椭圆曲线算法是代数几何、数论等多个数学分支的一个交叉点，一直被人们认为是纯理论学科。而椭圆曲线密码体制，是基于椭圆曲线离散对数问题的一种公钥密码体制(Realization of elliptic curves (ECC), elliptic curve algorithm is algebraic geometry, a number of mathematical intersection of number theory and other branches, has been considered a purely theoretical discipline. The elliptic curve cryptosystem is based on elliptic curve discrete logarithm problem as a public-key cryptosystem)

利用VC来实现一个简单的DES加密程序，他能完成DES算法的全部步骤，不过只能使用64位密码对64位明文进行加密-VC to achieve a simple DES encryption program, he can finish all the DES algorithm steps, but only use 64 to 64 passwords expressly encryption

DES 加密算法的一些说明-DES encryption algorithm some explanations

SHA1消息摘要算法， SHA1消息摘要算法-SHA1 message digest algorithm, SHA1 message digest algorithm

一种通过判断网卡地址来控制软件使用期限的算法，简单有效。-Address of a card through the control software to determine the use of time algorithms, simple and effective.

BASE64编码的C实现，很精简，可以直接内嵌入工程-BASE64-coded C implementation, it is streamlined and can be directly embedded engineering

des加密算法的c程序实现，能够加密8位明文，经测试通过编译。-des encryption algorithm c Program to express encryption eight, the test compiler.

在图像加密中用到的md5算法，也就是哈希置换(In the image of the md5 encryption algorithm used, that is, hash replacement)

SHA (安全Hash算法)是一种单向散列算法，可用于数字加密或数字签名，是比MD5更加安全的单向散列算法，与MD5算法一起时被应用最广泛的两种算法。(SHA (secure Hash algorithm) is a one-way hash algorithm, can be used for digital encryption or digital signature is more secure than the MD5 one-way hash algorithm, in conjunction with the MD5 algorithm was the most widely used two algorithms.)

rc5-cts 模式的实现源码,与RFC中的实有所不同-RC5- ctc-source model of achievement, and the RFC is different