Method of performing microprocessor ALU integrity test over a distributed asynchronous serial communication network for ASIL-D level safety critical applications
US9268953B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 2, 2014 |
| Grant date | Feb 23, 2016 |
| Priority date | — |
| Expiry date | Aug 2, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/44
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system includes first and second modules of a vehicle. The first module stores at least one seed value, calculates a key based on the at least one seed value, forms a seed key pair based on the calculated key and the at least one seed value, generates a data bus message including the seed key pair and data corresponding to operation of the first module, and transmits, over a distributed vehicle network, the data bus message. The second module receives the data bus message over the distributed vehicle network, retrieves the seed key pair from the data bus message, determines whether the calculated key matches an expected key, and selectively verifies integrity of the first module based on the determination of whether the calculated key matches the expected key.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.