Fecha de publicación: 26/04/2022 Fuente: Wipo "IOT" PROBLEM TO BE SOLVED: To achieve secure authentication without increasing the burden and cost of an administrator.SOLUTION: In an IoT device authentication system, when an IoT device is manufactured, a derived key issuer generates a unique derived key of the IoT device on the basis of the unique ID and the master key of the IoT device, and the unique ID of the IoT device and the unique derived key of the IoT device are written to the IoT device, and when the IoT device is authenticated, the IoT device transmits the unique ID of the IoT device to an IoT device management server, and the IoT device management server transmits the unique ID of the IoT device to a key distribution server, and the key distribution server generates the unique derived key of the IoT device on the basis of the master key stored in the key distribution server and the unique ID of the IoT device, and transmits the unique derived key of the IoT device to the IoT device management server. The IoT device management server authenticates the IoT device by using the unique derived key of the IoT device transmitted from the key distribution server.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2022,JPO&INPIT