Re: [rtcweb] End-to-end encryption vs end-to-end authentication (DTLS-SRTP / SDES-SRTP)

Iñaki Baz Castillo <ibc@aliax.net> Thu, 05 April 2012 17:44 UTC

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From: Iñaki Baz Castillo <ibc@aliax.net>
Date: Thu, 05 Apr 2012 19:43:52 +0200
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To: Roman Shpount <roman@telurix.com>
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Cc: rtcweb@ietf.org
Subject: Re: [rtcweb] End-to-end encryption vs end-to-end authentication (DTLS-SRTP / SDES-SRTP)
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2012/4/5 Roman Shpount <roman@telurix.com>:
> On Thu, Apr 5, 2012 at 1:07 PM, Fabio Pietrosanti (naif)
> <lists@infosecurity.ch> wrote:
>>
>> This means that DTLS-SRTP, from a trust-model point of view, does not
>> provide end-to-end security because there will always be a trusted third
>> party able to authorize Man in the Middle to do eavesdropping.
>
>
> Incorrect. If fingerprint is exposed and can be verified, DTLS-SRTP does
> provide end-to-end security. No third parties involved.

The fingerprint is included in the SDP which goes throught the Web
server, right? You know what I mean ;)

-- 
Iñaki Baz Castillo
<ibc@aliax.net>