[Bug 17615] New: Support for different CDM communication models

https://www.w3.org/Bugs/Public/show_bug.cgi?id=17615

           Summary: Support for different CDM communication models
           Product: HTML WG
           Version: unspecified
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: critical
          Priority: P2
         Component: Encrypted Media Extensions
        AssignedTo: adrianba@microsoft.com
        ReportedBy: petr@verimatrix.com
         QAContact: public-html-bugzilla@w3.org
                CC: mike@w3.org, public-html-media@w3.org


The current communication model (section 1) assumes that the application
communicates with the license server. In today's deployments, this is not
always the case. There are at least two models in the industry:
1. The CDM generates a Key Request and does not rely on a specific
communication protocol but rather lets the application communicate with the
license server to deliver the request and eventually get the encrypted key back
(i.e. license).
2. The CDM includes its own communication protocol to the license server.  In
this case, the application does not need to go through the 'generateKeyRequest
-> Get Key -> addKey' sequence but can simply call retrieveKey and the CDM
handles the rest. 
The Encrypted Media Extension proposal should support both of these models.

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Received on Wednesday, 27 June 2012 06:01:23 UTC