[TLS] TLS 1.2 MAC calculation

Mike <mike-list@pobox.com> Thu, 02 August 2007 16:55 UTC

Return-path: <tls-bounces@lists.ietf.org>
Received: from [127.0.0.1] (helo=stiedprmman1.va.neustar.com) by megatron.ietf.org with esmtp (Exim 4.43) id 1IGdxp-0004kJ-FZ; Thu, 02 Aug 2007 12:55:53 -0400
Received: from [10.91.34.44] (helo=ietf-mx.ietf.org) by megatron.ietf.org with esmtp (Exim 4.43) id 1IGdxo-0004kE-Qa for tls@ietf.org; Thu, 02 Aug 2007 12:55:52 -0400
Received: from rune.pobox.com ([208.210.124.79]) by ietf-mx.ietf.org with esmtp (Exim 4.43) id 1IGdxn-0005E5-LS for tls@ietf.org; Thu, 02 Aug 2007 12:55:52 -0400
Received: from rune (localhost [127.0.0.1]) by rune.pobox.com (Postfix) with ESMTP id 02262119FA0 for <tls@ietf.org>; Thu, 2 Aug 2007 12:56:13 -0400 (EDT)
Received: from [192.168.1.8] (wsip-24-234-114-35.lv.lv.cox.net [24.234.114.35]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by rune.sasl.smtp.pobox.com (Postfix) with ESMTP id C3EEC119F9E for <tls@ietf.org>; Thu, 2 Aug 2007 12:56:12 -0400 (EDT)
Message-ID: <46B20CE1.7020308@pobox.com>
Date: Thu, 02 Aug 2007 09:57:05 -0700
From: Mike <mike-list@pobox.com>
User-Agent: Thunderbird 2.0.0.5 (Windows/20070716)
MIME-Version: 1.0
To: tls@ietf.org
References: <46ABB82D.8090709@pobox.com> <46B0D8B5.6000203@pobox.com>
In-Reply-To: <46B0D8B5.6000203@pobox.com>
Content-Type: text/plain; charset="ISO-8859-1"; format="flowed"
Content-Transfer-Encoding: 7bit
X-Spam-Score: 0.0 (/)
X-Scan-Signature: d17f825e43c9aed4fd65b7edddddec89
Cc:
Subject: [TLS] TLS 1.2 MAC calculation
X-BeenThere: tls@lists.ietf.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: "This is the mailing list for the Transport Layer Security working group of the IETF." <tls.lists.ietf.org>
List-Unsubscribe: <https://www1.ietf.org/mailman/listinfo/tls>, <mailto:tls-request@lists.ietf.org?subject=unsubscribe>
List-Archive: <http://www1.ietf.org/pipermail/tls>
List-Post: <mailto:tls@lists.ietf.org>
List-Help: <mailto:tls-request@lists.ietf.org?subject=help>
List-Subscribe: <https://www1.ietf.org/mailman/listinfo/tls>, <mailto:tls-request@lists.ietf.org?subject=subscribe>
Errors-To: tls-bounces@lists.ietf.org

I just want to make sure I'm reading the spec
correctly.  Is SHA-256 used only for the PRF
calculation and the MAC algorithm is still
whatever the cipher suite says?  Or is SHA-
256 also used for MAC calculations?  I believe
the former, so MD5 could even still be used
with RC4 -- is this correct?

Thanks,

Mike

_______________________________________________
TLS mailing list
TLS@lists.ietf.org
https://www1.ietf.org/mailman/listinfo/tls