IDENTITY AUTHENTICATION METHOD, THIRD-PARTY SERVER, MERCHANT SERVER AND USER TERMINAL

摘要

An identity authentication method, a third-party server, a merchant server and a user terminal. The method comprises: a third-party server acquires information of a destination merchant server according to received first random information that is sent by a client and carries the information of the destination merchant server; the third-party server acquires locally registered and stored identity information of the destination merchant server corresponding to the destination merchant server according to the information of the destination merchant server, and sends the identity information to the client; and the third-party server sends the first random information to the destination merchant server, so that the client can determine identity validity of the destination merchant server according to the first random information fed back by the destination merchant server and the identity information of the destination merchant server.