IETF Logo Mail Archive

Re: [rtcweb] Question about srtp_mki in DTLS/SRTP

Simon Perreault <sperreault@jive.com> Wed, 14 January 2015 19:37 UTC

Return-Path: <sperreault@jive.com>
X-Original-To: rtcweb@ietfa.amsl.com
Delivered-To: rtcweb@ietfa.amsl.com
Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 77B551ACED9 for <rtcweb@ietfa.amsl.com>; Wed, 14 Jan 2015 11:37:19 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.978
X-Spam-Level:
X-Spam-Status: No, score=-1.978 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, FM_FORGED_GMAIL=0.622, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_LOW=-0.7, SPF_PASS=-0.001] autolearn=ham
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id ZGDnVDMSMiEj for <rtcweb@ietfa.amsl.com>; Wed, 14 Jan 2015 11:37:17 -0800 (PST)
Received: from mail-lb0-f172.google.com (mail-lb0-f172.google.com [209.85.217.172]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 527651ACED1 for <rtcweb@ietf.org>; Wed, 14 Jan 2015 11:37:17 -0800 (PST)
Received: by mail-lb0-f172.google.com with SMTP id z12so9777743lbi.3 for <rtcweb@ietf.org>; Wed, 14 Jan 2015 11:37:15 -0800 (PST)
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:date :message-id:subject:from:to:cc:content-type; bh=WrcQoaxO0HWUaMIIDUlT/klHKagxgaZS2Q8AdHyEBRQ=; b=P3XEPOK9AQgEj8mkV0TxC3mhj/wwQAxtMMXRDGm3DMt65Fxc6I8d35cmmzRF60CIJ7 tcKKGgmnd2yeU15rWewjd1dv3AjL5M1kij7gws553iHh1zYaEcqM9PsRQ3KM12DVosWP uHFhfN1FgYEXLXJnkYQ+OY5QsCyr8j0JCnwi50mIwx6QefGkmH/X15NBf9V7/MFUSDi1 A6ost6oCDMVWNLFFwRbPbvQ6//4rK4e/UmlBRNmZpbnF/6d+TajzDUdRuA93rWk6W3rh cdTj0C81YqaXlRlJNeuFqj6nGy1a7dZTHmSMHV9R22V8qObPN3lT6J/1OOvcLG5F7n9F 0c1w==
X-Gm-Message-State: ALoCoQkQHWkbKDeLECeUQpAOPXBPQFlAPr9RAZNUDn95T6gguWT4TVgILcr9ABSVvayoUj2ML0Ed
MIME-Version: 1.0
X-Received: by 10.112.159.136 with SMTP id xc8mr5766264lbb.98.1421264235644; Wed, 14 Jan 2015 11:37:15 -0800 (PST)
Received: by 10.25.84.145 with HTTP; Wed, 14 Jan 2015 11:37:15 -0800 (PST)
In-Reply-To: <CABkgnnW4pxL+rqF41b==wqHjMEP_7bKs_jJ4SXgGbyMpPP_rQg@mail.gmail.com>
References: <CAOW+2dvhEzAfyV51p1YWZoc41vih3TKhoArq3CGXzHvSdHEdcA@mail.gmail.com> <CANO7kWBjs4AwyTXXhOBSDqG=y9ThM=XkLyO_S1xPe3naL9za_Q@mail.gmail.com> <CAOW+2dt5k+dbxRbdodu5Sh+t6zzX0bVgXBUMnmSe+kJP2R+LLw@mail.gmail.com> <CANO7kWATfQdMapdCSDYdke+GFxh8OO6NJQob9hNQUDiASrpDtQ@mail.gmail.com> <CABkgnnV-irZn9N7WMTbvn4Vm1Ltqc7tzoCJo3_towfa6PSRwPw@mail.gmail.com> <CANO7kWADQLXheo6mhgrEt-0XYwXHYbiq8=oOnOxOsqz4diw6nA@mail.gmail.com> <CABkgnnW4pxL+rqF41b==wqHjMEP_7bKs_jJ4SXgGbyMpPP_rQg@mail.gmail.com>
Date: Wed, 14 Jan 2015 14:37:15 -0500
Message-ID: <CANO7kWC2G+r8jRmoPrYdMy0s+TiPuzy4TvgRSQ_QTyA3cW-njw@mail.gmail.com>
From: Simon Perreault <sperreault@jive.com>
To: Martin Thomson <martin.thomson@gmail.com>
Content-Type: multipart/alternative; boundary="001a11c3dbace5e20c050ca1dd6e"
Archived-At: <http://mailarchive.ietf.org/arch/msg/rtcweb/GoReGT3WGne5lUgjkfA1rEaW3-U>
Cc: "rtcweb@ietf.org" <rtcweb@ietf.org>
Subject: Re: [rtcweb] Question about srtp_mki in DTLS/SRTP
X-BeenThere: rtcweb@ietf.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: Real-Time Communication in WEB-browsers working group list <rtcweb.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/rtcweb>, <mailto:rtcweb-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/rtcweb/>
List-Post: <mailto:rtcweb@ietf.org>
List-Help: <mailto:rtcweb-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/rtcweb>, <mailto:rtcweb-request@ietf.org?subject=subscribe>
X-List-Received-Date: Wed, 14 Jan 2015 19:37:19 -0000

On Wed, Jan 14, 2015 at 2:16 PM, Martin Thomson <martin.thomson@gmail.com>
wrote:

> On 14 January 2015 at 10:39, Simon Perreault <sperreault@jive.com> wrote:
> > Also, didn't renegotiation just get removed from TLS 1.3 or did I
> > get that wrong?
>
> Renegotiation is gone, but rekeying is going to be put back in.


use_srtp is in ClientHello, and that's renegotiation, right? If so, can you
end up with new keys without a new MKI?

Simon

v2.23.0 | Report a Bug | By Email