H - Electricity – 04 – N
Patent
H - Electricity
04
N
H04N 21/25 (2011.01) H04L 9/08 (2006.01)
Patent
CA 2580380
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.
L'invention concerne un système et un procédé de gestion de clés de chiffrement pour une architecture de gestion des droits numériques (GDN) comprenant de multiples niveaux de gestion, en vue de réduire l'utilisation de la bande passante tout en maximisant la sécurité de l'architecture GDN. Dans une forme de réalisation, une structure de données pour la gestion de clés de chiffrement comprend une paire de clés publique/privée et trois couches supplémentaires de clés symétriques pour autoriser l'accès à une pluralité de contenus.
Medvinsky Alexander
Moroney Paul
Pterka Petr
Sprunk Eric J.
General Instrument Corporation
Gowling Lafleur Henderson Llp
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