Authentication system for electronic control unit on a bus
US11057213B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 13, 2017 |
| Grant date | Jul 6, 2021 |
| Priority date | — |
| Expiry date | Apr 15, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/40215
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An authentication system having a communications bus, a transmitter connected to the bus, and a receiver connected to the bus. A physical layer signal may be applied by the transmitter to a message on the bus for authenticating the transmitter. The physical layer signal may incorporate an identifier (ID) of the transmitter. The receiver may receive the message and decode the physical layer signal on the message. Decoding the physical layer signal on the message may reveal the ID of the transmitter sending the message. The receiver may look up the ID on a list of IDs corresponding to transmitters approved to send the message, to determine whether the ID of the transmitter sending the message matches an ID on the list. Only if the ID of the transmitter matches an ID on the list, then the transmitter may be authenticated and authorized to send the message.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.