Design of secure authentication and transaction protocol based on digital certificates and dynamic password

The secure authentication and transaction is one of the important parts in networking security. Because of the security flaws of some existing schemes, this paper proposes a secure authentication and transaction protocol based on digital certificates and dynamic password. The protocol not only can realize the mutual authentication of the client and server, but also can achieve secure authentication and secure transaction by combing digital certificates and dynamic password. Analysis shows that the protocol can effectively resist many attacks and improve the security of the system.