Protecting sensitive information from an authorized device unlock
US11115208B2 · kind B2 · utility
1Cited by
20References
6Claims
0Family size
Inventor
Key dates
| Filing date | Nov 18, 2020 |
| Grant date | Sep 7, 2021 |
| Priority date | — |
| Expiry date | Nov 18, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2105
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Methods and apparati for auditing uses of cryptographic keys. In a method embodiment of the present invention, a set of audited uses for a cryptographic key is defined; the key is generated inside a protected execution environment of a digital computer; all software and firmware that is usable in the execution environment to access the key is demonstrated to an auditor; and, for each audited use of the key, a non-tamperable audit record describing said use is released.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.