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Re: [AVTCORE] SDP attribute for negotiation of Cryptex

Bernard Aboba <bernard.aboba@gmail.com> Fri, 29 January 2021 02:33 UTC

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From: Bernard Aboba <bernard.aboba@gmail.com>
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Date: Thu, 28 Jan 2021 18:33:52 -0800
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To: Justin Uberti <juberti=40google.com@dmarc.ietf.org>
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Subject: Re: [AVTCORE] SDP attribute for negotiation of Cryptex
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a=cryptex seems good. It is simple and to the point.

> On Jan 28, 2021, at 3:30 PM, Justin Uberti <juberti=40google.com@dmarc.ietf.org> wrote:
> 
> 
> For Cryptex, we need to decide on a name for the SDP parameter that negotiates the Cryptex mechanism (for encryption of the header extension block as well as any CSRCs).
> 
> The originally suggested name was "a=extmap-encrypted", but Jonathan rightly pointed out in https://github.com/juberti/cryptex/issues/20 that we are not in fact encrypting the "extmap". 
> 
> "a=encrypted-extensions" isn't quite right either, and "a=encrypted-extensions-and-csrcs" seems longish. Hence I lean towards the simple "a=cryptex" attribute name.
> 
> Any other suggestions?
> 
> 
> 
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