METHOD, DEVICE AND SYSTEM FOR AUTHENTICATING GATEWAY, NODE AND SERVER

摘要

A method, device and system for authenticating gateway, node and server are provided in this invention. The node receives a message sent by a gateway, wherein the message comprises a number T3 shared by the gateway and a server, and a gateway identification. The node encrypts data with a key K1 shared by the node and the server, the data including T3, the gateway identification, and a random number T1 generated by the node, and then sends the encrypted data and a node identification to the server through the gateway. The node decrypts data encrypted by the server and forwarded by the gateway with the key, determines that the server is a valid server according to a T1-related number obtained by decryption, and establishes a security channel with the gateway according to a new key obtained through the decryption. With this invention, without increasing the times of information interaction between the gateway and the server, the server can authenticate the node during mutual authentication of the gateway and the node, so that security destructive power even if the gate way would be hacked and controlled by hackers can be lowered and security can be improved.