Method and system for detecting modified pages
US8108686B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2008 |
| Grant date | Jan 31, 2012 |
| Priority date | — |
| Expiry date | Dec 1, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/645
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for validating program execution. The method involves identifying a program from a second computer system, obtaining, by a first computer system, a first copy of a page for a file of the program from a second computer system, calculating a hash value for the first copy, storing the first copy in a local memory of the first computer system, storing the hash value for the first copy, and executing the program on the first computer system, where the first copy is removed from the local memory during execution of the program. The method further involves obtaining a second copy of the page from the second computer system, calculating a hash for the second copy, determining whether the hash value for the first copy is equal to the hash value for the second copy, and performing an appropriate action in response to the determination.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.