Re: [TLS] Still missing: TLS_ECDH_anon_WITH_AES_xxx_GCM_SHAxxx

Peter Gutmann <pgut001@cs.auckland.ac.nz> Thu, 13 March 2014 04:50 UTC

Return-Path: <pgut001@cs.auckland.ac.nz>
X-Original-To: tls@ietfa.amsl.com
Delivered-To: tls@ietfa.amsl.com
Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 823461A04F6 for <tls@ietfa.amsl.com>; Wed, 12 Mar 2014 21:50:45 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.447
X-Spam-Level:
X-Spam-Status: No, score=-2.447 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RP_MATCHES_RCVD=-0.547] 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 CPmAUoQCDYN1 for <tls@ietfa.amsl.com>; Wed, 12 Mar 2014 21:50:40 -0700 (PDT)
Received: from mx2.auckland.ac.nz (mx2.auckland.ac.nz [130.216.125.245]) by ietfa.amsl.com (Postfix) with ESMTP id AFBCB1A08B0 for <tls@ietf.org>; Wed, 12 Mar 2014 21:50:39 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=auckland.ac.nz; i=@auckland.ac.nz; q=dns/txt; s=uoa; t=1394686234; x=1426222234; h=from:to:subject:date:message-id: content-transfer-encoding:mime-version; bh=owoYs8ei3+NbfPwW2cvvTurR//k8a/Lpd7GKzYy6v4A=; b=CD1atLdZSQ+mk8WQfVs2zUwrMPMwm9dNBgxlZnlVl9RZn9ODh/Pwv/00 iwqJWzMEJHRZzdUieqR6a8CzK0VShTg5QJDXBkvXZwQBmkq+4VBR4JbfE +Mh5a1EG26FSSrU1brP2RXVHd7EFR23HbTxcQk1muEf1Rf5wjviyo0fSd Y=;
X-IronPort-AV: E=Sophos;i="4.97,644,1389697200"; d="scan'208";a="239369142"
X-Ironport-HAT: MAIL-SERVERS - $RELAYED
X-Ironport-Source: 130.216.4.106 - Outgoing - Outgoing
Received: from uxchange10-fe2.uoa.auckland.ac.nz ([130.216.4.106]) by mx2-int.auckland.ac.nz with ESMTP/TLS/AES128-SHA; 13 Mar 2014 17:50:32 +1300
Received: from UXCN10-6.UoA.auckland.ac.nz ([169.254.10.53]) by uxchange10-fe2.UoA.auckland.ac.nz ([130.216.4.106]) with mapi id 14.03.0174.001; Thu, 13 Mar 2014 17:50:32 +1300
From: Peter Gutmann <pgut001@cs.auckland.ac.nz>
To: "ietf-ssh@netbsd.org" <ietf-ssh@netbsd.org>, "<tls@ietf.org>" <tls@ietf.org>
Thread-Topic: [TLS] Still missing: TLS_ECDH_anon_WITH_AES_xxx_GCM_SHAxxx
Thread-Index: Ac8+d8OhohuCIUnlQ2Op/mVzyohdOQ==
Date: Thu, 13 Mar 2014 04:50:32 +0000
Message-ID: <9A043F3CF02CD34C8E74AC1594475C737238AD92@uxcn10-6.UoA.auckland.ac.nz>
Accept-Language: en-NZ, en-GB, en-US
Content-Language: en-NZ
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
x-originating-ip: [130.216.158.4]
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: quoted-printable
MIME-Version: 1.0
Archived-At: http://mailarchive.ietf.org/arch/msg/tls/eVWatEXDD5rHKzDuzfezaX-fvek
Subject: Re: [TLS] Still missing: TLS_ECDH_anon_WITH_AES_xxx_GCM_SHAxxx
X-BeenThere: tls@ietf.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: "This is the mailing list for the Transport Layer Security working group of the IETF." <tls.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/tls>, <mailto:tls-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/tls/>
List-Post: <mailto:tls@ietf.org>
List-Help: <mailto:tls-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/tls>, <mailto:tls-request@ietf.org?subject=subscribe>
X-List-Received-Date: Thu, 13 Mar 2014 04:50:45 -0000

Daniel Kahn Gillmor <dkg@fifthhorseman.net> writes:

>0) either the software or the admin must manually provision the certificate
>for the server; this means making decisions about questions that don't
>necessarily have any good answers, which is not a situation you want your
>users to be in.  Servers operating in a pool now need to have some sort of
>secret key distribution mechanism, for example.

One option for this is for the server to auto-generate the cert on first
install/setup.  The alternative that's currently used on way too many devices
is for them to have a pre-generated generic cert with incorrect ID information
with the private key shared across all devices.

Peter.