Research on A Mutual Dynamic Password Authentication System

Based on the study of the security problems in the existing identity authentication systems, this paper proposes a mutual dynamic password authentication system. The implementation of this scheme is presented and the security is analyzed. This scheme bearing the following characteristics: it provides mutual authentication between the user and server which can resist the impersonation attack; the implement of the mutual authentication needn't to depend on the CA; authentication information keep dynamic, so replay attack can be prevented effectively.