Method and apparatus for secure execution of code
US7930738B1 · kind B1 · utility
272Cited by
6References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 2, 2005 |
| Grant date | Apr 19, 2011 |
| Priority date | — |
| Expiry date | Aug 19, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2105
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
One embodiment of the present invention provides a system that facilitates secure execution of code. During operation, the system executes a section of code. Upon executing an instruction that raises a privilege of the section of code, the system checks if the section of code is trusted, wherein trusted code is allowed to raise the privilege and non-trusted code is not allowed to raise the privilege. If so, the system raises the privilege of the section of code and executes the section of code. After the section of code is executed, the system then lowers the privilege of the section of code.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.