Message source detection in a vehicle bus system
US11048828B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 2019 |
| Grant date | Jun 29, 2021 |
| Priority date | — |
| Expiry date | May 14, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W4/48
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Systems and methods for identifying the source of a message transmitted on the CAN bus of a vehicle, by creating a unique signature for each ECU. The system is further configured to detest malicious activities on a CAN bus system having a given physical configuration. The signature of an ECU is created based on the non-linearity of the CAN bus, by determining from at least one pulse of a read message a training-signature that includes a pair of sub-signatures: a rising-sub-signature of the rising response, and a falling-sub-signature of the falling response, as viewed by said message generating ECU. By reading a plurality of messages from the ECUs operationally integrated on the CAN bus system, a classification & prediction methodology is used to create, for each message generating ECU, from the respective training-signatures, a unique ECU-signature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.