Re: [TLS] HKDF
Nikos Mavrogiannopoulos <nmav@redhat.com> Wed, 25 March 2015 15:36 UTC
Return-Path: <nmav@redhat.com>
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 8EE7B1B2A62 for <tls@ietfa.amsl.com>; Wed, 25 Mar 2015 08:36:30 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -6.912
X-Spam-Level:
X-Spam-Status: No, score=-6.912 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_HI=-5, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, T_RP_MATCHES_RCVD=-0.01] 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 1tvjzN_t1gI1 for <tls@ietfa.amsl.com>; Wed, 25 Mar 2015 08:36:26 -0700 (PDT)
Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 3AC011B2A59 for <tls@ietf.org>; Wed, 25 Mar 2015 08:36:26 -0700 (PDT)
Received: from int-mx13.intmail.prod.int.phx2.redhat.com (int-mx13.intmail.prod.int.phx2.redhat.com [10.5.11.26]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id t2PFaJCJ017003 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Wed, 25 Mar 2015 11:36:19 -0400
Received: from dhcp-2-127.brq.redhat.com (dhcp-2-127.brq.redhat.com [10.34.2.127]) by int-mx13.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id t2PFaHsR018976 (version=TLSv1/SSLv3 cipher=AES256-SHA bits=256 verify=NO); Wed, 25 Mar 2015 11:36:18 -0400
Message-ID: <1427297776.4885.47.camel@redhat.com>
From: Nikos Mavrogiannopoulos <nmav@redhat.com>
To: Hugo Krawczyk <hugo@ee.technion.ac.il>
Date: Wed, 25 Mar 2015 16:36:16 +0100
In-Reply-To: <CADi0yUPG7Ac_V69__M1gQd_8fkaj=0-HEz=oL1mzTSjQjhJrBw@mail.gmail.com>
References: <CABcZeBPa3j+EfMkPik7r5G-qcBpYkXTFWwYwuCeE38mFjUwpJw@mail.gmail.com> <7FA320AE-B9C2-412D-B84B-DB4CAB05B325@gmail.com> <5510FDC8.1060702@brainhub.org> <358E3F82-0777-42A1-AA75-F31AA3C2103B@gmail.com> <20150324121632.GA28552@LK-Perkele-VII> <CAKUk3buuP+=AA0kLF9VodASVfQSYGZq016sqcbe8eoNJRKZxGA@mail.gmail.com> <CADi0yUPG7Ac_V69__M1gQd_8fkaj=0-HEz=oL1mzTSjQjhJrBw@mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"
Mime-Version: 1.0
Content-Transfer-Encoding: 8bit
X-Scanned-By: MIMEDefang 2.68 on 10.5.11.26
Archived-At: <http://mailarchive.ietf.org/arch/msg/tls/Q96tz6O0AIR7DAvywgAxrpfRep0>
Cc: "tls@ietf.org" <tls@ietf.org>
Subject: Re: [TLS] HKDF
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: Wed, 25 Mar 2015 15:36:30 -0000
On Wed, 2015-03-25 at 11:21 -0400, Hugo Krawczyk wrote: > One idea for meaningful reduction of complexity in TLS is if > we could switch to cipher-based KDF. > That's for the WG to decide but the results we have for the > extraction properties of block-cipher based PRFs are much weaker. I'm not sure whether the WG should even decide on replacing the KDF or the main protocols used. That was certainly a non-goal for TLS 1.3 and is a cryptographic decision which is not the expertise of this group. For such decisions, and even simpler (see Salsa20, ChaCha cipher addition) this working group delegated these decisions to CFRG, and I believe this should also be done now if we go the path of replacing core TLS structure. regards, Nikos
- [TLS] HKDF Eric Rescorla
- Re: [TLS] HKDF Dave Garrett
- Re: [TLS] HKDF Yoav Nir
- Re: [TLS] HKDF Andrey Jivsov
- Re: [TLS] HKDF Yoav Nir
- Re: [TLS] HKDF Ilari Liusvaara
- Re: [TLS] HKDF Hugo Krawczyk
- Re: [TLS] HKDF Andrey Jivsov
- Re: [TLS] HKDF Andrey Jivsov
- Re: [TLS] HKDF Hugo Krawczyk
- Re: [TLS] HKDF Nikos Mavrogiannopoulos
- Re: [TLS] HKDF Ilari Liusvaara
- Re: [TLS] HKDF Brian Smith
- Re: [TLS] HKDF Eric Rescorla
- Re: [TLS] HKDF Hugo Krawczyk
- Re: [TLS] HKDF Brian Smith
- Re: [TLS] HKDF Ilari Liusvaara
- Re: [TLS] HKDF Ilari Liusvaara
- Re: [TLS] HKDF Michael StJohns
- Re: [TLS] HKDF Michael StJohns
- Re: [TLS] HKDF Ilari Liusvaara
- Re: [TLS] HKDF Richard Moore
- Re: [TLS] HKDF Watson Ladd