Continuous run-time integrity checking for virtual memory
US9424200B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2013 |
| Grant date | Aug 23, 2016 |
| Priority date | — |
| Expiry date | Sep 23, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/64
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A run-time integrity checking (RTIC) method compatible with memory having at least portions that store data that is changed over time or at least portions configured as virtual memory is provided. For example, the method may comprise storing a table of page entries and accessing the table of page entries by, as an example, an operating system or, as another example, a hypervisor to perform RTIC on memory in which, as an example, an operating system, as another example, a hypervisor, or, as yet another example, application software is stored. The table may, for example, be stored in secure memory or in external memory. The page entry comprises a hash value for the page and a hash valid indicator indicating the validity status of the hash value. The page entry may further comprise a residency indicator indicating a residency status of the memory page.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.