Authorization process using a certificate
US7197637B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2001 |
| Grant date | Mar 27, 2007 |
| Priority date | — |
| Expiry date | Mar 12, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/84
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a process for insuring data integrity of software for a control unit of a motor vehicle, a central system (trust center) can issue certificates to authorized parties, enabling them to properly sign software for the control unit and import it into a vehicle to enable operation of the vehicle. For this purpose, the trust center (or the vehicle itself) provides a pair of control unit keys having a first and second key. The first key is stored during production of the vehicle in such a manner that it is accessible to the control unit. By means of the second key of the trust center, a first certificate for an authorized party (certificate holder) is signed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.