Provided is a key management method to secure security in an onboard network system having multiple electronic control units storing a shared key. In the key management method of the onboard network system including multiple electronic units (ECUs) that perform communication by frames via a bus, a master ECU stores a shared key to be mutually shared with one or more ECUs. Each of the ECUs acquire a session key by communication with the master ECU based on the stored shared key, and after this acquisition, executes encryption processing regarding a frame transmitted or received via the bus, using this session key. In a case where a vehicle in which the onboard network system is installed is in a particular state, the master ECU executes inspection of a security state of the shared key stored by the ECU or the like.
Key management method used in encryption processing for safely transmitting and receiving messages
07.01.2020
Patent
Elektronische Ressource
Englisch
IPC: | H04L TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION , Übertragung digitaler Information, z.B. Telegrafieverkehr / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
Key management method used in encryption processing for safely transmitting and receiving messages
Europäisches Patentamt | 2020
|KEY MANAGEMENT METHOD USED IN ENCRYPTION PROCESSING FOR SAFELY TRANSMITTING AND RECEIVING MESSAGES
Europäisches Patentamt | 2023
|KEY MANAGEMENT METHOD USED IN ENCRYPTION PROCESSING FOR SAFELY TRANSMITTING AND RECEIVING MESSAGES
Europäisches Patentamt | 2016
|Key management method used in encryption processing for safely transmitting and receiving messages
Europäisches Patentamt | 2023
|KEY MANAGEMENT METHOD USED IN ENCRYPTION PROCESSING FOR SAFELY TRANSMITTING AND RECEIVING MESSAGES
Europäisches Patentamt | 2020
|