Based On The Time The Principle Of One-time Password Authentication

With the ground of information encryption technology , this paper analyzes network security architecture and makes deep research on user authentication on network application layer, especially on OTP (One-Time Password). The system use JAVA to design WWW OTP Authentication system . The system give the improvements of the original OTP plan and add a systematic random number and time blunt which also use RAS algorithm encrypt and decrypt the user's current secret language by way of the service's public or private key when the system carry out . It can effectively prevent the steal and dictionary attack of an attackerThe concepts relative to the design are: authentication mechanism, encryption algorithm, MD5 algorithm and so on, which are wide and original, with great theoretical value and many practical functions. The system has been proved to be simple and effective, easily transplanted, which can be used in many applications that need the authentication service only with small modification.