Secure storage of full disk encryption keys
US9235532B2 · kind B2 · utility
3Cited by
11References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 3, 2011 |
| Grant date | Jan 12, 2016 |
| Priority date | — |
| Expiry date | Aug 27, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2107
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Data is securely stored on a storage device by encoding a data block into multiple encoded blocks, any number of which can be recombined to recover the data block. The encoded blocks are stored at known logical locations corresponding to physical locations on a storage device that change over time. When the data needs to be destroyed, at least one of the encoded blocks is overwritten with arbitrary data. In one aspect, the encoded blocks include at least one random block that is used to encode the data block. In another aspect, the known logical locations are stored in metadata.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.