Method and apparatus for virtually erasing data from WORM storage devices
US8429401B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 9, 2005 |
| Grant date | Apr 23, 2013 |
| Priority date | — |
| Expiry date | Dec 12, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2143
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A storage device capable of selectively rendering certain data irretrievable is disclosed. The storage device includes Write Once Read Many (WORM) storage medium, a key generator, an encrypted write component, an erasable storage medium and a key deleter. The WORM storage medium is capable of storing data, and the data stored in the WORM data storage medium are unerasable and unrewritable. The key generator provides a generated key that can be stored in the erasable storage medium. The encrypted write component writes a set of sensitive data encrypted by using the generated key to the WORM storage medium. In response to a request for deleting the set of sensitive data from the WORM storage medium, the key deleter deletes the generated key from the erasable storage medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.