Re: [rtcweb] No Interim on SDES at this juncture

Dan Wing <dwing@cisco.com> Thu, 13 June 2013 19:14 UTC

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From: Dan Wing <dwing@cisco.com>
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Date: Thu, 13 Jun 2013 12:14:30 -0700
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To: Tim Panton <tim@phonefromhere.com>
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Subject: Re: [rtcweb] No Interim on SDES at this juncture
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On Jun 13, 2013, at 8:30 AM, Tim Panton <tim@phonefromhere.com> wrote:

> 
> On 13 Jun 2013, at 13:59, Harald Alvestrand wrote:
> 
>> 
>> 
>> The architectural/non-cost argument I see against decrypt/encrypt is "the gateway wants to be able to disclaim the ability to look at the bits".
> 
> Which is implausible because it will probably have to have the DES keys to be able to decode RTCP at least.

RTCP is usually only authenticated (not encrypted), which is the recommendation of RFC3711 (SRTP).

-d


> 
> I'm not sure how much implausible deniability is worth these days.
> 
> T.
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