Securing firmware
US10771264B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 10, 2018 |
| Grant date | Sep 8, 2020 |
| Priority date | — |
| Expiry date | Dec 7, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/50
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for secure data protection includes generating a firmware digital certificate for a layer of firmware. The firmware operates a hardware component of a compute node. The firmware digital certificate is an attribute certificate. The firmware digital certificate includes a cumulative hash of the layer of firmware and a nonce. The cumulative hash includes a concatenation of a hash of the layer of firmware and a hash of each one or more lower layers of the firmware. The method includes authenticating the layer of firmware using a trusted data store. The trusted data store includes a binary image of an expected layer of firmware and a certificate chain comprising the hardware digital certificate and the firmware digital certificate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.