密码,最重要的作用无疑是保护信息和资料的安全。因此,密码的安全性是专家们一直追求的主要目标。而现在常用的标准加密方式是用一串随机数字对信息进行编码。但这种加密方案有一个致命的缺陷———就是这种密码在被窃听破解时,不会留下任何痕迹,合法用户无法察觉,还会继续使用 Password, the most important role is undoubtedly the protection of information and data security. Therefore, the security of the password is the main goal the experts have been pursuing. Nowadays, standard encryption is commonly used to encode information in a random sequence of numbers. However, this encryption scheme has a fatal flaw - that is, when the password is eavesdropped and cracked, no traces are left behind and legal users can not detect and will continue to use it