Re: [quicwg/base-drafts] Expand AEAD limits to consider multi-user security. (#3789)

Martin Thomson <notifications@github.com> Wed, 01 July 2020 01:38 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 1DF233A08B0 for <quic-issues@ietfa.amsl.com>; Tue, 30 Jun 2020 18:38:35 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.009
X-Spam-Level:
X-Spam-Status: No, score=-2.009 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, HTML_IMAGE_ONLY_16=1.092, HTML_MESSAGE=0.001, MAILING_LIST_MULTI=-1, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001] 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 spnzGZ2gMyps for <quic-issues@ietfa.amsl.com>; Tue, 30 Jun 2020 18:38:34 -0700 (PDT)
Received: from out-21.smtp.github.com (out-21.smtp.github.com [192.30.252.204]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id D03553A08AD for <quic-issues@ietf.org>; Tue, 30 Jun 2020 18:38:33 -0700 (PDT)
Received: from github-lowworker-943b171.ac4-iad.github.net (github-lowworker-943b171.ac4-iad.github.net [10.52.22.59]) by smtp.github.com (Postfix) with ESMTP id 84BEEA0C5B for <quic-issues@ietf.org>; Tue, 30 Jun 2020 18:38:32 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=github.com; s=pf2014; t=1593567512; bh=Nzv0MWK0a5wonlZQ5Vw3jtbgsFlt+Amcdtdhb9iZiAg=; h=Date:From:Reply-To:To:Cc:In-Reply-To:References:Subject:List-ID: List-Archive:List-Post:List-Unsubscribe:From; b=wd0MvzFunzG9hBR+3hxu+GYGXjWX6K3/l5J5THWoJY2n+3WD33ioy+24L6z7BMtfv BqAw+vZhGUeJS7BcMaxmj1NkbPhhC9tdn7OCG94nxnZxtHpDdhJekG7KTsKhmrJ8hy XxYpVIiKrBmxpJSKwvb82W4BD2kXWNF386jLASg4=
Date: Tue, 30 Jun 2020 18:38:32 -0700
From: Martin Thomson <notifications@github.com>
Reply-To: quicwg/base-drafts <reply+AFTOJK6PO45I6MD4STLVH7V5A7FBREVBNHHCM4U4BA@reply.github.com>
To: quicwg/base-drafts <base-drafts@noreply.github.com>
Cc: Subscribed <subscribed@noreply.github.com>
Message-ID: <quicwg/base-drafts/pull/3789/review/440491801@github.com>
In-Reply-To: <quicwg/base-drafts/pull/3789@github.com>
References: <quicwg/base-drafts/pull/3789@github.com>
Subject: Re: [quicwg/base-drafts] Expand AEAD limits to consider multi-user security. (#3789)
Mime-Version: 1.0
Content-Type: multipart/alternative; boundary="--==_mimepart_5efbe91876322_3d6c3ff8964cd9601128f0"; charset="UTF-8"
Content-Transfer-Encoding: 7bit
Precedence: list
X-GitHub-Sender: martinthomson
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/blBMrzy5VeIYgozvNHIyGJdN7dE>
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: Wed, 01 Jul 2020 01:38:35 -0000

@martinthomson commented on this pull request.



>  
-Note:
+For AEAD_AES_128_GCM, the integrity limit is 2^54 forged packets; see

The limit is much, much higher, for 256-bit keys.  But the analysis below recommends that the same limit apply.

-- 
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/3789#discussion_r448068535