System and Method for Signaling Segment Encryption and Key Derivation for Adaptive Streaming

摘要

An apparatus for decoding a media stream, wherein the apparatus comprises a memory module, a processor module coupled to the memory module, wherein the memory module contains instructions that when executed by the processor cause the apparatus to perform the following: receive a media stream comprising a segment signaling information and a plurality of segments, wherein the plurality of segments comprises encoded and unencoded segments, wherein the segment signaling information comprises identification of at least two segment groups each comprising at least one segment, identify at least one segment group using the segment signaling information in the media stream, identify at least one segment decoding algorithm for the at least one segment group, identify at least one decoding key for the at least segment group, and decode each encoded segment within the at least segment group using the at least segment decoding algorithm and the at least one decoding key.

主权项

1. A method for sending an encoded media stream, the method comprising:
sending a media stream to a client, the media stream comprising a plurality of encoded and unencoded segments in a single period of the media stream; and send segment signaling information that:
identifies a plurality of segment groups comprising an unencoded segment group and one or more encoded segment groups in the single period of the media stream;identifies at least one segment decoding algorithm associated with the encoded segment groups;identifies at least one decoding key associated with the encoded segment groups; andidentifies at least one initialization vector associated with the encoded segment groups, wherein encoded segments of each of the encoded segment groups are decodable using the at least one decoding algorithm, the at least one decoding key, and the at least one initialization vector.