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 (400) stores a shared key to be mutually shared with one or more ECUs (100a through 100d). Each of the ECUs (100a through 100d) acquire a session key by communication with the master ECU (400) 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 (400) executes inspection (e.g., steps S1201, S1203) of a security state of the shared key stored by the ECU (100a) or the like.
KEY MANAGEMENT METHOD, VEHICLE-MOUNTED NETWORK SYSTEM AND KEY MANAGEMENT DEVICE
SCHLÜSSELVERWALTUNGSVERFAHREN, FAHRZEUGMONTIERTES NETZWERKSYSTEM UND SCHLÜSSELVERWALTUNGSVORRICHTUNG
PROCÉDÉ DE GESTION DE CLÉ, SYSTÈME DE RÉSEAU MONTÉ SUR VÉHICULE ET DISPOSITIF DE GESTION DE CLÉ
2019-12-18
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 |
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