System and method for securely utilizing basic input and output system (BIOS) services
US6892304B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 3, 2000 |
| Grant date | May 10, 2005 |
| Priority date | — |
| Expiry date | Jun 8, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/0223
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In accordance with one aspect of the current invention, the system comprises a memory for storing instruction sequences by which the processor-based system is processed, where the memory includes a physical memory and a virtual memory. The system also comprises a processor for executing the stored instruction sequences. The stored instruction sequences include process acts to cause the processor to: map a plurality of predetermined instruction sequences from the physical memory to the virtual memory, determine an offset to one of the plurality of predetermined instruction sequences in the virtual memory, receive an instruction to execute the one of the plurality of predetermined instruction sequences, transfer control to the one of the plurality of predetermined instruction sequences, and process the one of the plurality of predetermined instruction sequences from the virtual memory. In accordance with another aspect of the present invention, the system includes an access driver to generate a service request to utilize BIOS services such that the service request contains a service request signature created using a private key in a cryptographic key pair. The system also includes an…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.