Patent ID: 11882213
Assignee: ROBERT BOSCH GMBH
Field: Digital communication (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A vehicle-mounted key-generation method used for a vehicle, the vehicle comprising a plurality of electronic control units (ECUs) that communicate with each other through a vehicle-mounted network, at least one ECU of the plurality of ECUs including a key generation module and a key transmission module, the method comprising:
receiving, with the at least one ECU, while the key generation module in the at least one ECU is in a locked mode, a secure access request sent from an authorized user outside the vehicle to the vehicle through a secure access device and confirming to accept the secure access request;
waiting for the secure access device to send a key generation request after confirming to accept the secure access request from the secure access device by the at least one ECU, the key generation module in the at least one ECU being unlocked and switched to a key generation mode in response to receiving the key generation request;
generating, after the key generation module in the at least one ECU being unlocked and switched to the key generation mode, a key using the key generation module in the at least one ECU; and
sending the key to other ECUs of the plurality of ECUs via the vehicle-mounted network using the key transmission module in the at least one ECU.