利用替换算法的加密算法!

VC++编程，这是一个曾经开发过的早期的版本,对于初学者有益-VC++ Programming, this is a once-off early development version, useful for beginners

Motivation - A simple DES core  - Fast and Small Version  - Open Source Compatibility I believe that the core complies to NIST-800-17. However, there has been no formal third party verification. The official NIST specification can be downloaded here: 800-17.pdf. For the Triple DES, the NIST reference is located here: 

信息学竞赛中常用的算法总结: 串匹配的高效算法-KMP 公开密钥体系之RSA算法 双向广度搜索 图论算法 -Informatics algorithms commonly used race Summary: Efficient String Matching Algorithm-KMP system RSA public key algorithm for bi-directional breadth of the search algorithm of graph theory

C++ implementaion for RSA together with the Wiener attack. It uses NTL library for big numbers

这是一个压缩/解压例程使用哈夫曼编码/解码，并且最适合在普通文本的文件。代码是 * 高度 * 进行了优化，并表明这是如何快速我可以提到另一个发现这里在 planetsourcecode （从 2000 年 8 月 1 日) 也采用哈夫曼编码的代码样本。该代码用了 127 秒压缩 1.8 mb 文本文件，但与我的代码，这需要小于 1 秒 ！！(唐山的零时 12700%!!)。其他代码是值得 7 的优异点，这个价值是多少吗？

一个利用C语言来实现加密算法之DES算法的源码。-A source program of DES arithmetic using C .

sha256。256位的sha哈希函数算法，将明文进行散列加密处理。

著名图论问题之一。邮递员从邮局出发送信，要求对辖区内每条街，都至少通过一次，再回邮局。在此条件下，怎样选择一条最短路线?此问题由中国数学家管梅谷于1960年首先研究并给出算法，故名。-Well-known graph theory problems. Postman deliver a letter from the post office proceed to require every street within the right area, at least through the time, return to post office. Under these conditions, how to select a shortest route? This issue by the Chinese mathematician Mei Gu tube study in 1960, and gives the first algorithm, hence the name.

是DES的编码密码算法，非常适合初学者学习，欢迎使用。-DES cryptographic algorithm is the encoding is very suitable for beginners to learn, welcome to use.

c语言编写可对文件加密-c language of the document can be encrypted