对所需要保密的文件进行加密，代码简洁易懂。

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).

DES算法BCB组件，有源码，DELPHI也可以用。-DES algorithm BCB components, source code can also be used in Delphi.

基于DES加密算法-A algorithm base on DES

MD5计算,可以将文件提取出摘要，进行比对，校验，实现指纹算法-MD5, can be extracted document summaries, compare and testing to achieve fingerprint algorithm

此代码实现S-P密码的加密解密，在这个实验中用到了S盒和P盒随机发生器-this code to achieve S-P password encryption and decryption, in this experiment uses S boxes and boxes of random generator P

shs加密源程序-29-57 encryption source

关于A5算法的小程序-A5 algorithm on the small program

Openssl优化的加解密引擎，开发环境为嵌入式使用，很容易移植！

全功能的加密库，对称加密，非对称加密，单向加密，等待，最新版本-Full-featured encryption library, symmetric encryption, asymmetric encryption, one-way encryption, to wait, the latest version

使用标准C++开发的SHA-1算法的实现-Using standard C++ Developed SHA-1 algorithm