Content encryption key management
US9276741B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 18, 2012 |
| Grant date | Mar 1, 2016 |
| Priority date | — |
| Expiry date | Nov 7, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/4781
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Systems and methods for managing a content encryption key and a seed to generate the content encryption key are provided. In one example, a method may include receiving a request for a content encryption key at a content encryption key service. The request includes a requesting entity fingerprint that corresponds to a requesting entity and a seed identifier that corresponds to a seed. The seed identifier is mapped to the seed and the requesting entity fingerprint mapped to a corresponding seed permission. If the seed permission entitles the requesting entity to receive the content encryption key, the key is derived using the seed and provided to the requesting entity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.