Reducing the boot time of a TCPA based computing system when the core root of trust measurement is embedded in the boot block code
US7533274B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2003 |
| Grant date | May 12, 2009 |
| Priority date | — |
| Expiry date | Jun 8, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/575
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method, computer program product and system for reducing the boot time of a TCPA based computing system. A flash memory in the TCPA based computing system may include a register comprising bits configured to indicate whether the segments of the flash memory have been updated. The flash memory may further include a table configured to store measurements of the segments of the flash memory. The flash memory may further include a boot block code that includes a Core Root of Trust for Measurement (CRTM). The CRTM may read the bits in the register to determine if any of the segments of the flash memory have been updated. The CRTM may further obtain the measurement values in the table for those segments that store the POST BIOS code that have not been updated thereby saving time from measuring the POST BIOS code and consequently reducing the boot time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.