[Bug 21081] Analysis of open source DRM systems and features that could be adopted

https://www.w3.org/Bugs/Public/show_bug.cgi?id=21081

--- Comment #7 from Henri Sivonen <hsivonen@iki.fi> ---
(In reply to comment #6)
> http://wendy.seltzer.is/writing/seltzer-anticircumvention.pdf

Thank you. I think there is now sufficient analysis of both OpenIPMP and DReaM
to see that neither offers any new insight that would show how a CDM that
satisfies the purpose of EME could be implemented in such a way that the
end-user can build the CDM from the preferred form for making modifications.
It's no surprise that DRM can be implemented in such a way that the preferred
form for making modifications except some key material can be shown to the
public if robustness relies either on Tivoization or on obfuscated compilation
performed by someone trusted by content providers other than the end-users.

I think we should proceed with the assumption that the purpose of EME cannot be
satisfied with CDMs that end users are allowed to build from the preferred form
for making modifications, and actual existence proof to the contrary would be
needed to refute this assumption.

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Received on Monday, 18 March 2013 10:29:51 UTC