IETF Logo Mail Archive

Re: [quicwg/base-drafts] Ipv6 flow label (#2399)

Brian E Carpenter <notifications@github.com> Fri, 08 February 2019 19:17 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 A7598130F3C for <quic-issues@ietfa.amsl.com>; Fri, 8 Feb 2019 11:17:33 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -6.596
X-Spam-Level:
X-Spam-Status: No, score=-6.596 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, HTML_IMAGE_ONLY_28=1.404, HTML_MESSAGE=0.001, MAILING_LIST_MULTI=-1, RCVD_IN_DNSWL_HI=-5, SPF_PASS=-0.001, URIBL_BLOCKED=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 XWTw6Yn06VE0 for <quic-issues@ietfa.amsl.com>; Fri, 8 Feb 2019 11:17:32 -0800 (PST)
Received: from out-3.smtp.github.com (out-3.smtp.github.com [192.30.252.194]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id DCB06130F3B for <quic-issues@ietf.org>; Fri, 8 Feb 2019 11:17:31 -0800 (PST)
Date: Fri, 08 Feb 2019 11:17:30 -0800
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=github.com; s=pf2014; t=1549653450; bh=WXIBpa6MyMzU7RnCiGzA4WuHkyBEtYydYte6T08eVwg=; h=Date:From:Reply-To:To:Cc:In-Reply-To:References:Subject:List-ID: List-Archive:List-Post:List-Unsubscribe:From; b=GjtHar3qR4IpicBw8qLZ96dvus7NWVvz3fHpd7wWO6CgsNmeFwOSJzab3mrEWSM4Z fiLCI5U3ej5EURFtlRGRi9gYZSzIKihTU5P22o3dgLm9E3IH6xD4nvSyMv4KtrRII9 18TNXOZAPqUQAkBXhKMpt1stz6BpsM6GpA/sPb2k=
From: Brian E Carpenter <notifications@github.com>
Reply-To: quicwg/base-drafts <reply+0166e4aba184e33360692f5dfb91b543bba673bc15b6785892cf00000001187597ca92a169ce182bb556@reply.github.com>
To: quicwg/base-drafts <base-drafts@noreply.github.com>
Cc: Subscribed <subscribed@noreply.github.com>
Message-ID: <quicwg/base-drafts/pull/2399/c461914419@github.com>
In-Reply-To: <quicwg/base-drafts/pull/2399@github.com>
References: <quicwg/base-drafts/pull/2399@github.com>
Subject: Re: [quicwg/base-drafts] Ipv6 flow label (#2399)
Mime-Version: 1.0
Content-Type: multipart/alternative; boundary="--==_mimepart_5c5dd5caa12b5_77e93f8b1dcd45b496613"; charset="UTF-8"
Content-Transfer-Encoding: 7bit
Precedence: list
X-GitHub-Sender: becarpenter
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/w8TWGDCSx3UI32ZCuSSXjG9oGq0>
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: Fri, 08 Feb 2019 19:17:34 -0000

fwiw [RFC6437](https://tools.ietf.org/html/rfc6437) is (intentionally) non-specific about the hash function. It says "If a hash algorithm is used, as suggested in Section 3, it SHOULD include a step that makes the flow label value significantly difficult to predict [RFC4086], even with knowledge of the algorithm being used." We didn't see any real need to specify a crypto hash for this purpose, but it's certainly OK. (The example in Appendix A of 6437 stinks and I regret it.)

-- 
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/2399#issuecomment-461914419

v2.23.0 | Report a Bug | By Email