Processing device with sensitive data access mode
US10223290B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 2017 |
| Grant date | Mar 5, 2019 |
| Priority date | — |
| Expiry date | Feb 18, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/402
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention concerns a method of protecting sensitive data, and a corresponding computing system processing device, comprising: entering, by a processing device, a sensitive date access mode in-which sensitive data is accessible; restricting, by a program running in the sensitive data access mode, one or more accessible address ranges for a non-secure function, and calling, from the sensitive data access mode, the non-secure function; and entering, by the processing device, a further operating mode to execute the non-secure function during which the processing device has access to only the one or more accessible address ranges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.