Block-level storage device with content security
US7549044B2 · kind B2 · utility
35Cited by
7References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 28, 2003 |
| Grant date | Jun 16, 2009 |
| Priority date | — |
| Expiry date | Mar 15, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/603
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A block-level storage device is provided that implements a digital rights management (DRM) system. In response to receiving a public key from an associated host system, the storage device challenges the host system to prove it has the corresponding private key to establish trust. This trust is established by encrypting a secure session key using the public key. The host system uses its private key to recover the secure session key. The storage device may store content that has been encrypted according to a content key. In addition, the storage device may encrypt the content key using the secure session key.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.