Electronic key registration system
US9137658B2 · kind B2 · utility
18Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 28, 2013 |
| Grant date | Sep 15, 2015 |
| Priority date | — |
| Expiry date | Jun 27, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/84
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An offline immobilizer ECU reads an encryption key generation code from an offline additional electronic key and generates an electronic key encryption key for the offline additional electronic key using the encryption key generation code and a communication subject key encryption key held by the immobilizer ECU. The immobilizer ECU stores, in a memory, the generated electronic key encryption key and a key ID code that is read from the offline additional electronic key.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.