CryptAPI测试程序源代码，包含获取证书链、枚举证书、获取设置证书属性、生产证书请求等源代码。-CryptAPI test program source code, including access to the certificate chain, enumeration certificate, certificate of property get set, production certificate request。

-设置试用期30天程序，如果用户试用程序，则程序只允许试用30次，到期程序将自动提醒用户注册。-- Set the 30-day trial program, if the user trial program, the program only allows for 30 times, due process will automatically alert the user registration.

根据A5原理，程序生成了大小250KB左右的A5密钥流文件。用户可自行设定三个LFSR的结构，以及三个LFSR的初始值。-According to the principle of A5, the program generate an A5 key stream file，whose size is about 250KB . Users can set the structure of three LFSR, and three LFSR s initial value.

Implement Diffie-Hellman Key exchange protocol and demonstrate that at the end, both person will have a common Key. Do the following: 1. Set a variable p ( e.g. p = 37) and g (e.g. g = 5). 2. Generate a, a random number mod p. Now generate A,