Re: [AVTCORE] EKT update, draft-ietf-avtcore-srtp-ekt-02
Martin Thomson <martin.thomson@gmail.com> Fri, 04 April 2014 17:50 UTC
Return-Path: <martin.thomson@gmail.com>
X-Original-To: avt@ietfa.amsl.com
Delivered-To: avt@ietfa.amsl.com
Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id DE5CB1A02D8 for <avt@ietfa.amsl.com>; Fri, 4 Apr 2014 10:50:17 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2
X-Spam-Level:
X-Spam-Status: No, score=-2 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, 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 qGslllR5Y_q9 for <avt@ietfa.amsl.com>; Fri, 4 Apr 2014 10:50:13 -0700 (PDT)
Received: from mail-wg0-x231.google.com (mail-wg0-x231.google.com [IPv6:2a00:1450:400c:c00::231]) by ietfa.amsl.com (Postfix) with ESMTP id 21AB21A0283 for <avt@ietf.org>; Fri, 4 Apr 2014 10:50:12 -0700 (PDT)
Received: by mail-wg0-f49.google.com with SMTP id a1so3905992wgh.32 for <avt@ietf.org>; Fri, 04 Apr 2014 10:50:08 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=chi3LzCJXq91yFkRh6jQXBmL8VYKrocVIis0UbbxpbU=; b=aK+VQ1T8VH1aNzjyyvndnovaoFt8zJqeP5KDlX/17yivItEE0b0BwHwpF3RmbPgkyz WNlOiqIpx1SCw0cBbl8/QpPzKUXQEEMX9jnqluXPJr9KFf8lu++tX2GnlpONs2aGd+UJ Wx1B+l+vfbGQ+Fbk6xOdOMdfKIlILlQzUPFx/gNf/pTBjlOzkGn45YoVHyTcAvHQuvky 3Ov4UXFSPj9MJP4IHMM40tylOPbzeHu7XwpBTUGEUSQOIqpE78cBKxkP6nVN2QP49tgj ZHVSioxdvYfd86cl515AkVgr0Dl3eBXsw7zks9ta04x2/RAF/uMCk28pRhgJDHmOXau7 LaaQ==
MIME-Version: 1.0
X-Received: by 10.194.192.132 with SMTP id hg4mr22069675wjc.28.1396633808099; Fri, 04 Apr 2014 10:50:08 -0700 (PDT)
Received: by 10.227.147.10 with HTTP; Fri, 4 Apr 2014 10:50:08 -0700 (PDT)
In-Reply-To: <CF64AC30.13E41%john.mattsson@ericsson.com>
References: <CB90C3F5-2F0D-4FD2-847E-E403CC45C790@cisco.com> <CF64AC30.13E41%john.mattsson@ericsson.com>
Date: Fri, 04 Apr 2014 10:50:08 -0700
Message-ID: <CABkgnnVSP3oZzZGS418eh2SxRqXxEbwC5Cxdm0UfhxcjZQqKsQ@mail.gmail.com>
From: Martin Thomson <martin.thomson@gmail.com>
To: John Mattsson <john.mattsson@ericsson.com>
Content-Type: text/plain; charset="UTF-8"
Archived-At: http://mailarchive.ietf.org/arch/msg/avt/I5QqFoXE-JiMhQp2qpOMQKAAj-8
Cc: "<draft-ietf-avtcore-srtp-ekt@tools.ietf.org>" <draft-ietf-avtcore-srtp-ekt@tools.ietf.org>, "avt@ietf.org WG" <avt@ietf.org>, Dan Wing <dwing@cisco.com>
Subject: Re: [AVTCORE] EKT update, draft-ietf-avtcore-srtp-ekt-02
X-BeenThere: avt@ietf.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: Audio/Video Transport Core Maintenance <avt.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/avt>, <mailto:avt-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/avt/>
List-Post: <mailto:avt@ietf.org>
List-Help: <mailto:avt-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/avt>, <mailto:avt-request@ietf.org?subject=subscribe>
X-List-Received-Date: Fri, 04 Apr 2014 17:50:18 -0000
On 4 April 2014 09:51, John Mattsson <john.mattsson@ericsson.com> wrote: > - Should SDESC always negotiate different EKT keys in the send and receive > direction? Strictly speaking, no, the SSRC should be sufficient to distinguish cases. But it's probably a good practice, in case you have an SSRC collision, causing the same key stream to be reused (which is bad). Unless you are in a multi-party session with a single key, noting that then you probably have an even higher chance of SSRC collision.
- [AVTCORE] EKT update, draft-ietf-avtcore-srtp-ekt… Dan Wing
- Re: [AVTCORE] EKT update, draft-ietf-avtcore-srtp… John Mattsson
- Re: [AVTCORE] EKT update, draft-ietf-avtcore-srtp… Martin Thomson