Securing and changing immutable data in secure bootup
US11074348B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 24, 2017 |
| Grant date | Jul 27, 2021 |
| Priority date | — |
| Expiry date | Sep 5, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/24
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A set of root keys is loaded as a first part of a secure boot process of a secure system. a first trusted key from a set of trusted keys is verified using a first root key from the set of root keys as a second part of the secure boot process. The set of trusted keys is loaded when an affirmative verification for a subset of trusted keys is received. The subset of trusted keys includes the first trusted key. As a third part of the secure boot process, an immutable portion of a file is validated using the first trusted key. As a fourth part of the secure boot process, the file is loaded when each portion of the file is successfully validated. The first, second, third, and fourth parts of the secure boot process occur before an integrity management configuration takes over the secure boot process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.