Patent ID: 11888833
Assignee: BEIJING VOYAGER TECHNOLOGY CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H  B  G | IPC B  G  H

Claim 0:
1. A security platform for a vehicle, the security platform comprising:
a key distribution center for the vehicle, the key distribution center being mounted in a processing device in the vehicle and configured to:
provide security levels for electronic control units (ECUs) having different security levels corresponding to different subsystems in the vehicle, wherein a highest security level is used for ECUs for subsystems including at least one of powertrain subsystem, chassis subsystem, body/comfort subsystem, engine subsystem, transmission subsystem, brakes subsystem, and door locks subsystem;
verify that a digital certificate associated with a first electronic control unit (ECU) on the vehicle is a valid certificate, the digital certificate indicating a first security level of the first ECU;
generate, based on the first security level of the first ECU, one or more security keys for secure communication between the first ECU and a set of ECUs on the vehicle, wherein the one or more security keys are a type of security key usable at the first security level, wherein the types of security keys include at least one of symmetric and asymmetric; and
provision the one or more security keys to the first ECU and the set of ECUs, wherein the key distribution center assigns different security keys to the ECUs based on the security levels of the ECUs;
wherein the key distribution center is configured to generate the one or more security keys based on the first security level of the first ECU by:
determining that the first security level includes a lowest security level; and
determining a unique security key for secure communication between the first ECU and any ECU in the set of ECUs.