System and method for preventing malicious CAN bus attacks
US11036853B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 1, 2018 |
| Grant date | Jun 15, 2021 |
| Priority date | — |
| Expiry date | Aug 1, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/40273
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system for preventing cyber security attacks over the CAN bus of a vehicle, from carrying out their plot. The system includes a teleprocessing device that is provided with the message identifier of at least one ECU to be blocked. The teleprocessing device is configured to read the message identifier of CAN messages, to thereby identify the at least one ECU to be blocked. Upon determining that the vehicle is under a cyber security attack, the ECU blocking device is activated. Upon identifying that a message was transmitted by the at least one ECU to be blocked, then during the CAN bus ‘bit monitoring’ process, before the at least one ECU to be blocked reads back the transmitted signal, the ECU blocking device alters one or more bits of the transmitted signal, to thereby force the message to be an erroneous CAN message.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.