System and method for providing authorized access to digital...

Details System and method for providing authorized access to digital... System and method for providing authorized access to digital...

2007-09-04

2007-09-04

Moazzami, Nasser (Department: 2136)

Cryptography

Video cryptography

C725S086000, C725S087000, C725S025000, C713S168000

Reexamination Certificate

active

11281019

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.

REFERENCES:
patent: 6105134 (2000-08-01), Pinder et al.
patent: 2002/0044658 (2002-04-01), Wasilewski et al.
patent: 2002/0174366 (2002-11-01), Peterka et al.
patent: 2004/0101138 (2004-05-01), Revital et al.
patent: 2005/0039212 (2005-02-01), Baran et al.
patent: 2005/0144634 (2005-06-01), Koo et al.
patent: 2006/0198519 (2006-09-01), Candelore

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