Protected volume on a data storage device with dual operating systems and configurable access and encryption controls
US7757100B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 23, 2008 |
| Grant date | Jul 13, 2010 |
| Priority date | — |
| Expiry date | Jan 7, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/78
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method provides a protected region of a data storage device associated with a computational device, where data in the protected region is primarily protected by preventing access without proper access authorization. The method comprises the steps of providing, in an unprotected region of the data storage device, a first operating system and associated operating system data; monitoring operating system data accessed by the computational device until a predetermined functionality becomes available; storing, in the protected region, the monitored operating system data; providing, in the protected region, a second operating system; transferring control of the computational device from the first operating system to the second operating system; storing data in the protected region; and preventing access to the stored data in the protected region without access authorization. In a further embodiment of the method, the second operating system optionally provides a second level of security by preventing decryption of data stored in the protected region without decryption authorization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.