DRM: ECCP with dashif:Laurl and manifest based key-rotation (live stream)

[dsilhavy]

A short description of the use case for the new test content.

This test content is supposed to demonstrate the Enhanced Clearkey Protection (ECCP) mechanism. In this case we are using key rotation to update the decryption key in a predefined interval.

Test content requirements

General description and requirements

• A multi period MPD
• The type of the MPD shall be dynamic (live stream)
• One video and one audio AdaptationSets.
• The content shall be encrypted with Clearkey and the cbcs encryption scheme.
• Both AdaptationSets use the same cenc:default_KID and consequently share the same key
• Both AdaptationSets define dashif:Laurl
• The required key is rotated frequently by adding a new period with different cenc:default_KID for both AdaptationSets
• The server component linked in dashif:Laurl should return the valid key. As an example:
  • Request: {"kids":["nrQFDeRLSAKTLifXUIPiZg"],"type":"temporary"}
  • Response: {"keys":[{"kty":"oct","k":"FmY0xnWCPCNaSpRG-tUuTQ","kid":"nrQFDeRLSAKTLifXUIPiZg"}],"type":"temporary"}

DASH-IF documents and links

• DASH-IF Interoperability Points; Part 6: Content Protection, see "Manifest based key rotation signaling"
• Clear key license format: https://www.w3.org/TR/encrypted-media/#clear-key-license-format

[haudiobe]

Requirements:

• same as #9
• extensions to live sim, expect some work @TobbeEdgeware