Flash update using a trusted platform module
US7484105B2 · kind B2 · utility
24Cited by
19References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 16, 2001 |
| Grant date | Jan 27, 2009 |
| Priority date | — |
| Expiry date | May 9, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/572
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An update utility requests a signature verification of the utility's signature along with a request to unlock the flash memory stored in the utility. A trusted platform module (“TPM”) performs a signature verification of the utility using a previously stored public key. Upon verification of the signature, the TPM unlocks the flash memory to permit update of the utility. Upon completion of the update, the flash utility issues a lock request to the TPM to relock the flash memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.