System and method for providing authorized access to digital content
US7404082B2 · kind B2 · utility
14Cited by
5References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 16, 2005 |
| Grant date | Jul 22, 2008 |
| Priority date | — |
| Expiry date | Apr 6, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/603
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Described herein are embodiments that provide an approach to cryptographic key management for a digital rights management (DRM) architecture that includes multiple levels of key management for minimizing bandwidth usage while maximizing security for the DRM architecture. In one embodiment, there is provided a data structure for cryptographic key management that includes a public/private key pair and three additional layers of symmetric keys for authorizing access to a plurality of contents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.