- From: mwatson2 via GitHub <sysbot+gh@w3.org>
- Date: Tue, 28 Apr 2015 00:27:15 +0000
- To: public-html-media@w3.org
mwatson2 has just created a new issue for https://github.com/w3c/encrypted-media: == Remove recommendation for distinct keys for distinct policies == Section 1 includes the following note: "Authors should encrypt each set of stream(s) that requires enforcement of a meaningfully different policy with a distinct key (and key ID). For example, if policies may differ between two video resolutions, stream(s) containing one resolution should not be encrypted with the key used to encrypt stream(s) containing the other resolution. When encrypted, audio streams should not use the same key as any video stream. This is the only way to ensure enforcement and compatibility across clients." I don't recall discussing or agreeing to this recommendation and propose it should be removed. Encrypting multiple streams with the same key and having the DRM enforce distinct policies (e.g. by resolution) is supported by all the DRMs and is widely used. See https://github.com/w3c/encrypted-media/issues/50
Received on Tuesday, 28 April 2015 00:27:16 UTC