Patent ID: 7412063
Filing Date: 2008-08-12
Classification: H04L

Abstract:
1. A method for controlling the delivery of broadcast encryption content for a network cluster from a content server outside the cluster, the method comprising: receiving in the content server from a network device a key management block for the cluster, a unique data token for the cluster, and a encrypted cluster id; and calculating a binding key for the cluster in dependence upon the key management block for the cluster, the unique data token for the cluster, and the encrypted cluster id, wherein calculating a binding key further comprises: and wherein the method further comprises: encrypting the content for the cluster with a title key; encrypting the title key with the binding key; and packaging the encrypted title key with the encrypted content for the cluster; receiving in the network device a content server device id; encrypting in the network device a cluster id in dependence upon a content server device id for the content server including: