Globally valid measured operating system launch with hibernation support
US8627464B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 2, 2010 |
| Grant date | Jan 7, 2014 |
| Priority date | — |
| Expiry date | Jun 14, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2101
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An event log can comprise, not only entries associated with components instantiated since a most recent power on of a computing device, but also entries of components instantiated prior to that power on, such as components that were instantiated, and represent, a state of the computing device prior to hibernation that has now been resumed. Upon hibernation, the current values of the Platform Configuration Registers (PCRs) of a Trusted Platform Module (trusted execution environment), as well as a quote of those current values, and a current value of a monotonic counter of the trusted execution environment can be logged. The monotonic counter can be incremented at each power on to track successive generations of the computing device and to guard against an intervening, not-logged generation. A subsequent parsing of the event log can verify the prior generational entries with reference to the PCR values in the log that are associated with those generations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.