Firmware verified boot
US8812854B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 12, 2010 |
| Grant date | Aug 19, 2014 |
| Priority date | — |
| Expiry date | Nov 30, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3247
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A computer-implemented method for verifying a boot process of a computing system includes reading, by the computing system during the boot process, a header section of a read-write portion of firmware of the computing system. The method further includes generating, using a first cryptographic hash algorithm, a message digest corresponding with the header, and decrypting, using a first public-key, an encrypted signature corresponding to the header. The method further includes comparing the message digest corresponding with the header and the decrypted signature corresponding to the header. In the event the message digest corresponding to the header and the decrypted signature corresponding to the header match, the boot process is continued. In the event the message digest corresponding to the header and the decrypted signature corresponding to the header do not match, the boot process is halted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.