Controlling access to a resource by a program using a digital signature
US7900239B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 20, 2001 |
| Grant date | Mar 1, 2011 |
| Priority date | — |
| Expiry date | Apr 15, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2141
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A computer system has a resource, a verification unit and an execution engine for running a body of program code having an associated signature. A cryptographic key is associated with the resource and when the code is to be loaded into the execution engine a verification operation is run on the signature using the cryptographic key associated with the resource. The execution engine is separate from the resource and when access to the resource is required by the code in the execution engine a further verification operation is conducted on the signature using the cryptographic key associated with the resource. Access to the resource by the code depends upon the result of the verification operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.