Developing initial and subsequent keyID information from a unique mediaID value
US8189790B2 · kind B2 · utility
2Cited by
2References
26Claims
0Family size
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Key dates
| Filing date | Aug 14, 2009 |
| Grant date | May 29, 2012 |
| Priority date | — |
| Expiry date | Oct 16, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/20
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A technique for using a key repository to store data encryption keys provides a way to access key records in the key repository using a key identifier constructed from a media identifier associated with a data storage medium on which encrypted data is or will be stored. The media identifier is hashed and added to a counter value to produce the key identifier. In some embodiments, the technique is implemented in an encryption switch that provides data-at-rest encryption for a storage access network, but in other embodiments, the technique may be implemented in other devices, including data storage devices and hosts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.