[encrypted-media] Keys in other sessions MUST be unaffected by closing a session, even if there are overlapping key IDs.

ddorwin has just created a new issue for 
https://github.com/w3c/encrypted-media:

== Keys in other sessions MUST be unaffected by closing a session, 
even if there are overlapping key IDs. ==
The spec currently says:
>Keys in other sessions SHOULD be unaffected, even if they have 
overlapping key IDs.

This issue proposes to change the SHOULD to a MUST:
>Keys in other sessions MUST be unaffected, even if they have 
overlapping key IDs.

As discussed in 
https://github.com/w3c/encrypted-media/pull/184#discussion-diff-62884927,
 "it seems this SHOULD should be MUST. Otherwise, there is a 
difference in observable behavior. At a minimum, non-overlapping key 
IDs should be unaffected, but I think the spec should expect correct 
and consistent behavior unless there is a good reason not to." 
@mwatson2 agreed.

If there are no objections by May 20th, we will make this change.

Please view or discuss this issue at 
https://github.com/w3c/encrypted-media/issues/186 using your GitHub 
account

Received on Thursday, 12 May 2016 00:21:33 UTC