我写的利用IDEA算法的加密程序，并含文件切割和合并功能。

应用密码学。学习密码学的最好资料.推荐-study cipher..........ph

一个64位编码解码的动态连接库的例子-A 64-bit codec DLL example

基于VC6的MD5加密源码,短小精干，利于交流学习。-MD5 encryption source code, the short crack, and conducive to the exchange of learning.

SHA算法的Emule实现-SHA algorithm to achieve the Emule

笔者长期从事移动通信系统的无线链路调制与解调、物理层实现方面的工作。在移动通信GSM系统中，我们进行语音或者业务信道解调时，都会遇到CRC的求解。通常在硬件DSP实现时，特别是40位CRC求解时候，由于生成多项式有41项，DSP最大一次能处理40位，所以使用单个寄存器会遇到一些困难，那么以下这个程序将会解决这一困难（这是针对定点DSP、C55xx的编程实现方法）。-The author has long been engaged in mobile communication system modulation and demodulation of wireless links, the physical layer to achieve work. GSM in the mobile communications system, we have a voice or channel demodulation operations, it will encounter the solution of CRC. DSP hardware usually realize, especially when solving the 40 CRC, as the generation polynomial has 41, DSP can handle the largest 40, so using a single register may encounter some difficulties, then following this process will solve this One difficulty (which is for fixed-point DSP, C55xx realize programming methods).

SHA-2 的代码实现-SHA-2 source implementation

RC2算法源代码-RC2 algorithm source code

DES写的文件加密软件,可以用于对整个文件进行加密并且设定加密密码来网络传输!-Written by DES file encryption software, can be used to encrypt the whole document and set the encryption password network!

LINUX下使用Ansi C编写的MD5消息散列算法-LINUX use Ansi C prepared news MD5 hash algorithm

简单加密工具原程序-simple encryption tools original program