In-vehicle computer system, vehicle, key generation device, management method, key generation method, and computer program
US10855460B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 5, 2017 |
| Grant date | Dec 1, 2020 |
| Priority date | — |
| Expiry date | Aug 10, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/84
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a secure hardware extension (SHE)-B, an initial key is set to a KEY_N key usable in a verification process and a generation process for a message authentication code. In an SHE-A, a master key is set to a KEY_N key usable in the verification process and the generation process for the message authentication code, the master key being used together with an identifier of an authenticated electronic control unit (ECU) for generating the message authentication code to be used as the initial key. A central processing unit (CPU) causes the message authentication code for the identifier of the authenticated ECU to be generated using the master key through the SHE-A and executes a process of authenticating validity of the authenticated ECU by using the generated message authentication code.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.