System and method for logical shredding of data stored on worm media
US7376062B2 · kind B2 · utility
13Cited by
6References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2004 |
| Grant date | May 20, 2008 |
| Priority date | — |
| Expiry date | Feb 6, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/0894
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Files are encrypted and stored on a WORM media device along with their encryption keys, the binary values of which are stored as a combination of written and unwritten sectors in a key storage portion of the media. To shred a file, the associated key is destroyed simply by writing into the unwritten sectors that are associated with the key.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.