Re: [quicwg/base-drafts] Output of the discard keys design team (#2673)

David Schinazi <notifications@github.com> Thu, 09 May 2019 20:44 UTC

Return-Path: <noreply@github.com>
X-Original-To: quic-issues@ietfa.amsl.com
Delivered-To: quic-issues@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 710FC120131 for <quic-issues@ietfa.amsl.com>; Thu, 9 May 2019 13:44:56 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -6.392
X-Spam-Level:
X-Spam-Status: No, score=-6.392 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HTML_IMAGE_ONLY_24=1.618, HTML_MESSAGE=0.001, MAILING_LIST_MULTI=-1, RCVD_IN_DNSWL_HI=-5, SPF_PASS=-0.001, T_DKIMWL_WL_HIGH=-0.01] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=github.com
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 uyjmKrjf9AzD for <quic-issues@ietfa.amsl.com>; Thu, 9 May 2019 13:44:54 -0700 (PDT)
Received: from out-7.smtp.github.com (out-7.smtp.github.com [192.30.252.198]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 534511200E3 for <quic-issues@ietf.org>; Thu, 9 May 2019 13:44:54 -0700 (PDT)
Date: Thu, 09 May 2019 13:44:53 -0700
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=github.com; s=pf2014; t=1557434693; bh=6NJEtClcmWuTwBRUXQejx4WHPdGWgultMQJotAYmgoE=; h=Date:From:Reply-To:To:Cc:In-Reply-To:References:Subject:List-ID: List-Archive:List-Post:List-Unsubscribe:From; b=f6SSW4JbLTe4YPUZl4f0Y8cMpXBphUl7s0W3oOrZTKS+M3Jc46lXwhBlu3xNNCjVx Sz/kAG/TZ6iYN+RR17RdVoviyCTxRPzZXv/SiwFKClGPFqSpY4Szs3S/gzoKHx2Ssc PG+K7hu7I28GOBQ2vJnL9vJeB+DlK9g8troFiJnM=
From: David Schinazi <notifications@github.com>
Reply-To: quicwg/base-drafts <reply+AFTOJK7APUHZSJPJ55V67NV24HB4LEVBNHHBUUAEMU@reply.github.com>
To: quicwg/base-drafts <base-drafts@noreply.github.com>
Cc: Subscribed <subscribed@noreply.github.com>
Message-ID: <quicwg/base-drafts/pull/2673/review/235814773@github.com>
In-Reply-To: <quicwg/base-drafts/pull/2673@github.com>
References: <quicwg/base-drafts/pull/2673@github.com>
Subject: Re: [quicwg/base-drafts] Output of the discard keys design team (#2673)
Mime-Version: 1.0
Content-Type: multipart/alternative; boundary="--==_mimepart_5cd491454e17e_62533ff267acd96c93459"; charset="UTF-8"
Content-Transfer-Encoding: 7bit
Precedence: list
X-GitHub-Sender: DavidSchinazi
X-GitHub-Recipient: quic-issues
X-GitHub-Reason: subscribed
X-Auto-Response-Suppress: All
X-GitHub-Recipient-Address: quic-issues@ietf.org
Archived-At: <https://mailarchive.ietf.org/arch/msg/quic-issues/Q0_lIzKM_5PEn8dO5Tu_TR1edXU>
X-BeenThere: quic-issues@ietf.org
X-Mailman-Version: 2.1.29
List-Id: Notification list for GitHub issues related to the QUIC WG <quic-issues.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/quic-issues>, <mailto:quic-issues-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/quic-issues/>
List-Post: <mailto:quic-issues@ietf.org>
List-Help: <mailto:quic-issues-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/quic-issues>, <mailto:quic-issues-request@ietf.org?subject=subscribe>
X-List-Received-Date: Thu, 09 May 2019 20:44:57 -0000

DavidSchinazi commented on this pull request.



> @@ -1086,25 +1097,44 @@ before the final TLS handshake messages are received.  A client will be unable
 to decrypt 1-RTT packets from the server, whereas a server will be able to
 decrypt 1-RTT packets from the client.
 
-However, a server MUST NOT process data from incoming 1-RTT protected packets
-before verifying either the client Finished message or - in the case that the
-server has chosen to use a pre-shared key - the pre-shared key binder (see
-Section 4.2.11 of {{!TLS13}}).  Verifying these values provides the server with
-an assurance that the ClientHello has not been modified.  Packets protected with
+Even though 1-RTT keys are available to a server after receiving the first
+handshake messages from a client, it is missing assurances on the state of the
+client:
+
+- The client is not authenticated, unless the server has chosen to use a
+pre-shared key and validated the client's pre-shared key binder; see
+Section 4.2.11 of {{!TLS13}}.
+- The client has not demonstrated liveness.

Fixed

-- 
You are receiving this because you are subscribed to this thread.
Reply to this email directly or view it on GitHub:
https://github.com/quicwg/base-drafts/pull/2673#discussion_r282658370