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DEVICE ARCHIVING OF PAST CLUSTER BINDING INFORMATION ON A BROADCAST ENCRYPTION-BASED NETWORK
DEVICE ARCHIVING OF PAST CLUSTER BINDING INFORMATION ON A BROADCAST ENCRYPTION-BASED NETWORK
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机译:基于广播加密的网络上的过去集群绑定信息的设备归档
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摘要
Provided are techniques for the creation and storage of an archive for binding IDs corresponding to a cluster of devices that render content protected by a broadcast encryption scheme. When two or more clusters are merged, a binding ID corresponding to one of the clusters is selected and a new management key is generated. Binding IDs associated with the clusters other than the cluster associated with the selected binding ID are encrypted using the new management key and stored on a cluster-authorized device in a binding ID archive. Content stored in conformity with an outdated binding ID is retrieved by decrypting the binding ID archive with the management key, recalculating an old management key and decrypting the stored content.
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