Re: [rtcweb] New use-case proposed

Göran Eriksson AP <goran.ap.eriksson@ericsson.com> Fri, 11 May 2012 16:38 UTC

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From: =?utf-8?B?R8O2cmFuIEVyaWtzc29uIEFQ?= <goran.ap.eriksson@ericsson.com>
To: Harald Alvestrand <harald@alvestrand.no>
Date: Fri, 11 May 2012 18:38:35 +0200
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Subject: Re: [rtcweb] New use-case proposed
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11 maj 2012 kl. 18:21 skrev "Harald Alvestrand" <harald@alvestrand.no>no>:

> I propose to reject this use case because it requires yet another 
> security redesign.
> The clue is here:
> 
>> 
>> - The keying solution must allow each participants to encrypt to
>> multiple receivers without any decryption+encryption in the middle node
>> 
> 
> This means that each participant must use the same encryption keys to 
> all other participants; this in turn means that when someone leaves the 
> group, all participants must change their encryption keys; it also means 
> that as long as shared keys are used for authentication, all 
> participants can impersonate all other participants.
> 
> In fact, this solution has most of the issues (except for the network 
> layer deployment issue) that leads me to strongly advocate leaving 
> multicast out of scope for this effort.

You mean for this phase of webrtc std efforts or for ever?

Regards
Göran


> 
>                Harald
> 
> 
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