Secure escrow and recovery of media device content keys
US9137480B2 · kind B2 · utility
5Cited by
126References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2006 |
| Grant date | Sep 15, 2015 |
| Priority date | — |
| Expiry date | Jul 7, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2005/91364
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An embodiment of a method for secure escrow and recovery of media device content keys includes generating, with a first processor of a media device, an escrow key for encrypting a plurality of content keys, the content keys for encrypting instances of media content. The first processor of the media device encrypts the escrow key with a public key of a key clearinghouse. The escrow key, encrypted with the public key of the key clearinghouse, is stored in a storage location outside of the first processor of the media device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.