Aerospace advanced chain of trust
US11876912B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2021 |
| Grant date | Jan 16, 2024 |
| Priority date | — |
| Expiry date | Aug 2, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/84
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method implemented by an onboard avionics computer for executing a plurality of binary codes that are associated with a plurality of sets of metadata, wherein: the plurality of binary codes and the plurality of metadata are hierarchized into a number of levels at least equal to two; a first binary code, of a level, is associated with a first set of metadata of the level, and a second binary code of a lower level, itself associated with a second set of metadata of the lower level; the first set of metadata comprises a data signature, the data comprising at least a first message digest associated with the first binary code, and the second set of metadata comprises a public key; the method comprising the execution, by the second binary code, of the following steps: applying a hash function to obtain a second message digest of the first binary code; decrypting the signature using the public key to obtain the first message digest; authorizing the execution of the binary code, if and only if the first message digest is identical to the second.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.