1、正则匹配自动搜索NOD32 ID。2、发送ID至NOD32官方服务器验证，只留有效ID。3、读取本地NOD32注册表，计算产品过期时间。4、读取本地NOD32注册表，解密安装的ID和密码。-1, are then matched automatically search NOD32 ID. 2, transmits the ID to NOD32 official server authentication, leaving only valid ID. 3, reads the local

用C++写的socket编程客户端和服务器，实现密码验证登陆服务器。-Written by C++ client and server socket programming, achieve password authentication login server.

web页面验证码无刷新更换图片和自动验证,可以学习-No refresh the web page authentication code change images and automatic verification, you can learn