Data protection using virtual-machine-specific stable system values
US8826033B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2009 |
| Grant date | Sep 2, 2014 |
| Priority date | — |
| Expiry date | Mar 14, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/554
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A virtual machine on a physical host computer provides controlled access to protected data by creating and storing a “stored system fingerprint” from stable system values (SSVs) as existing when creating the stored system fingerprint. The SSVs include virtual-machine-specific values that change upon cloning the virtual machine (VM) but do not change upon migration of the VM. Upon a request for access to the protected data, a current system fingerprint is calculated from the SSVs as existing when processing the request, the current system fingerprint is compared to the stored system fingerprint to determine whether there is a predetermined degree of matching, and the requested access to the protected data is permitted only if there is the predetermined degree of matching.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.