Isochronous data stream storing method for home audio-video network, involves storing parameters specific to data stream on storage unit, encrypting data stream using encryption key at level of node and storing data stream on storage unit

摘要

The method involves generating an encryption key and a key identifier associated to the key, by a node (003). Parameters specific to data stream are stored on a storage unit (006), and the stream is encrypted using the key, at the level of the node. The stream is transmitted to the storage unit and stored on the unit. The parameters comprise key and node identifiers and information specifying the requirement of protection against copy. Independent claims are also included for the following: (A) a method for authorizing access to secured reading of stored data stream (B) a computer program product comprising program code instructions for executing a method of storing data stream (C) a computer program product comprising program code instructions for executing a method of reading stored data stream (D) a computer readable medium having instructions for implementing a method of storing data stream (E) a computer readable medium having instructions for implementing a method of reading stored data stream (F) a network having a node for secured storing of data stream and a node for secured reading of the stored data stream.