| 摘要 |
A user identification method and a system thereof. A user device delivers a certificate packet with a unique serial number to a certificate server, and receives a reply packet with a password from a password server. The user device then uses the password and the unique serial number to produce a user terminal identification code, and then delivers an identification packet with the user terminal identification code to the certificate server. After receiving the certificate packet, the certificate server delivers an inquiry packet with the unique serial number to the password server, and then the password server inquires about password and expiration time thereof according to the unique serial number. After receiving the identification packet, the certificate server verifies the validity of the user terminal identification code and the expiration time with a database to determine if the user is admitted to proceed to the subsequent transaction. |
