Attestation using a combined measurement and its constituent measurements
US9747450B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 10, 2015 |
| Grant date | Aug 29, 2017 |
| Priority date | — |
| Expiry date | Jul 30, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/034
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An attestation system for asserting and verifying assertions of a known-good state of a computer system is provided. The attestation system allows a challenger and a prover to conduct an attestation so that the challenger can verify an assertion of the prover. To conduct the attestation, the prover sends, as an assertion of its state, a combined measurement of resources along with a constituent measurement of each resource to the challenger. The challenger verifies the assertion by verifying that the asserted constituent measurements represent known-good measurements and verifying that the asserted combined measurement can be generated from the asserted constituent measurements. To verify the asserted constituent measurements, the challenger determines whether each asserted constituent measurement for a resource is a known-good measurement for that resource. To verify the asserted combined measurement, the challenger generates a combined measurement from the asserted constituent measurements received from the prover.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.