DES算法源代码，这是自己书写的源代码，里面采用了非常多的技巧来提高编解码的效率，研究算法和源码的朋友们，我书写的这个代码可以作为你们很好的参考。...

The Advanced Encryption Standard (AES) specifies a FIPS- approved cryptographic algorithm that can be used to protect electronic data.  The AES-128 pipelined cipher module uses AES algorithm which is a symmetric block cipher to encrypt (encipher) information. This module is optimized for speed as it pipeline hardware to perform repeated sequence called round

有多种加密算法，如：字节取反、循环异或、码变换法、CSED、D3DES。-There are a variety of encryption algorithms, such as: anti-byte check, recycling XOR, code transformation, CSED, D3DES.

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).

一个比较简单的加密程序-a relatively simple encryption program

AES加密

这是一个霍夫曼编码程序-This is a Huffman code program

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 .

BASE64编码的实现-BASE64 encoded realize

基于JAVA语言的MD5编程，可以进行实验讲解，有输入输出示范-based on MD5 Java programming language, can conduct experiments to explain, input-output model

创建巨型文件的参考源代码-create huge document reference source code