Vehicle communication system, onboard apparatus, and key issuing apparatus
US10756894B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 15, 2016 |
| Grant date | Aug 25, 2020 |
| Priority date | — |
| Expiry date | Jun 10, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W4/48
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A vehicle communication system includes an onboard apparatus, a mobile device, and a key issuing apparatus provided outside the vehicle for issuing a key for cryptographic communication between the mobile device and the onboard apparatus. The mobile device and the onboard apparatus store the key, and perform the cryptographic communication using the key. The key issuing apparatus issues, to the onboard apparatus, the key and validity information indicating validity of the key. The onboard apparatus includes a determination section determining whether a validity ends, and an update request section transmitting a key update request to request the issuance of a new key. When the key update request has been received, the key issuing apparatus issues a new key to the mobile device, and issues a new key and validity information on the new key to the onboard apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.