CRC32循环冗余校验源程序！！！！ VC版本

SHA-1Hash函数源码，可以对任何文件做Hash，得到的Hash值为160位。具有抗强碰撞，弱碰撞等能力。虽然王小云已经找到了个别碰撞。但在新的好的hash函数出来之前仍将被广泛使用。-SHA-1Hash function source, any document can be done right hash, the hash value of 160. Anti-collision, the weak capabilities of the collision. Although Bruce Schneier, had found individual collisions. But the new good hash function will be out before widespread use.

一个关于串口的简单实现，可以了解基本串口听基本知识-a serial port on the simple realization, we can understand the basic serial listen to the basic knowledge

这个是基于混沌的AES加密算法-Chaos AES encryption algorithm

md5 算法的纯c版本。方便移植到各种嵌入式小型设备不支持c++的环境-md5 algorithm with pure C version. Easy to transplant it to systems using only C, but not C++

2的16次幂正整数d与n，编写计算d-1 (mod n) 的程序； 2、对于三个不超过2的16次幂正整数a、e与n，编写计算ae (mod n) 的程序。 在上述程序基础上写出下列程序： （1） 对给定的10000以内数判定其是否为素数； （2） 进行ElGamal体制的加密与签名。 -two of 16 power-positive integer d and n, calculate the preparation of d-1 (mod n); 2. For not more than 2 3 16 Powers positive integers a, e and n, calculate the preparation ae (mod n) procedures. In the above procedure to write on the basis of the following procedures : (a) the right to 10,000 within a few judging whether a prime number; (2) ElGamal encryption and signature.

比较流行的md5的加密方法!-more popular encryption methods md5!

md5的vb源代码

电子注册方式加密算法-Encrypting algorithm of electric register method

Openssl 0.9.8h 最新版OpenSSL -Openssl 0.9.8h the latest version of OpenSSL

DSA算法的Pascal实现和例子。实现了签名和确认-DSA algorithm Pascal realization and example. Realized has signed and confirmed