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Re: [rtcweb] SDP Security Descriptions (RFC 4568) and RTCWeb

Martin Thomson <martin.thomson@gmail.com> Tue, 30 April 2013 18:28 UTC

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Date: Tue, 30 Apr 2013 11:28:47 -0700
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From: Martin Thomson <martin.thomson@gmail.com>
To: "Ejzak, Richard P (Richard)" <richard.ejzak@alcatel-lucent.com>
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Cc: "rtcweb@ietf.org" <rtcweb@ietf.org>
Subject: Re: [rtcweb] SDP Security Descriptions (RFC 4568) and RTCWeb
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On 30 April 2013 08:14, Ejzak, Richard P (Richard)
<richard.ejzak@alcatel-lucent.com> wrote:
> We could
> mix SDES for voice/video with DTLS for DataChannels in these scenarios, but
> an all-SDES approach (for keying) would be more efficient.

I'm going to be blunt: this is crazy talk.

DTLS doesn't work that way.  What you are talking about is a whole new
protocol.  I'm sorry to say that I cannot wish you success and good
fortune if you intend to continue down that path.

Now, you could do what people do in the real world and send data as an
RTP payload.  None of this SCTP mess.  But we decided not to do that
for a number of reasons (i.e., the number of hands that were raised)
and by grim we don't go back on our decisions in this working group.

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