动态口令身份认证和报警系统

An Identity Authentication System with Dynamic Password

针对目前普遍使用的固定口令身份认证系统,给出了一种基于白噪声器件的动态口令身份认证系统。该系统中,动态口令是通过自噪声器件产生的随机序列经过特定的不可逆映射函数变换后得到的,这使得攻击者很难从已知的任何数量的口令中推断出下一个口令。此外,系统还提供了无线报警提示功能,可将用户的登录信息及时地发送给对应的合法用户,从而能够有效地防止非法用户的假冒攻击行为。

Considering identification systems with fixed passwords, which are widely used in the world at present, an identity authentication system with variable passwords based on white noise is introduced in this paper. In this system,random sequence, which is generated by white noise device, is transformed into dynamic password by specific irreversible mapping functions. It is impossible to deduce the next password from a sequence of known passwords. Besides, the system provides wireless alarm function, which makes valid registered users receive the login information and discover the masquerade behavior of invalid user in time.