随着计算机网络的普及,各种各样的口令也成为我们网络生活的一部分。口令是网络信息系统中最常用的安全与保密措施之一。如果用户采用了适当的口令,那么他的信息系统安全性将得到大大加强.但是,实际上网络用户中谨慎设置口令的用户却很少,这对计算机信息的安全保护带来了很大的 With the popularity of computer networks, a variety of passwords have also become part of our online life. Password is one of the most commonly used security and privacy measures in network information systems. If the user adopted the appropriate password, then his information system security will be greatly enhanced.However, in fact, users of the network cautious password setting is very small, which has brought a lot of security of computer information