Cyber-security protocol
US11750399B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 25, 2020 |
| Grant date | Sep 5, 2023 |
| Priority date | — |
| Expiry date | Jun 2, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/84
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
This disclosure describes a cyber-security protocol for validating messages being exchanged between two devices of an autonomous vehicle. The protocol includes the independent generation of multiple encryption or session keys by both devices. The encryption keys are generated based on a random number provided by each device. In some embodiments, the random numbers can be accompanied by a shared secret key installed on both devices that can help prevent an unauthorized device from creating a shared set of encryption keys with one of the devices. Including a hash generated using one of the encryption keys and a message sequence counter value in each message can help prevent the injection of previously transmitted messages as a means of disturbing operation of the autonomous vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.