Trusted time service for offline mode
US9705892B2 · kind B2 · utility
4Cited by
9References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2014 |
| Grant date | Jul 11, 2017 |
| Priority date | — |
| Expiry date | Jun 27, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/603
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Systems and methods for providing trusted time service for the off-line mode of operation of a processing system. An example processing system comprises: a first processing device communicatively coupled to a real-time clock, the first processing device to modify an epoch value associated with the real-time clock responsive to detecting a reset of the real-time clock; and a second processing device to execute, in a first trusted execution environment, a first application to receive, from the first processing device, a first time value outputted by the real-time clock and a first epoch value associated with the real-time clock.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.