Research and Realization of Authentication Technique Based on OTP

With the continuous development of network application, the problem of network security has become more and more important. Authentication is one of the mechanisms in security defence, and the authentication information is used to verify the user's legitimacy. The One_-Time Password(OTP) technique which needs no third authentication and its security flaws are analyzed in this paper. With the advantages of the Kerberos system, presents a new technique which saves user spp in the database after it is encrypted with the server's public key. Timestamp and IP address are also added into seed information, which makes an improvement in OTP technique. And the security of authentication system has been developed.