Re: I-D Action: draft-ietf-bfd-secure-sequence-numbers-13.txt

Alan DeKok <aland@freeradius.org> Mon, 05 February 2024 22:57 UTC

Return-Path: <aland@freeradius.org>
X-Original-To: rtg-bfd@ietfa.amsl.com
Delivered-To: rtg-bfd@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 8A950C15155C; Mon, 5 Feb 2024 14:57:22 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -6.909
X-Spam-Level:
X-Spam-Status: No, score=-6.909 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_HI=-5, RCVD_IN_ZEN_BLOCKED_OPENDNS=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01] autolearn=ham autolearn_force=no
Received: from mail.ietf.org ([50.223.129.194]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 3saKnlACpIOF; Mon, 5 Feb 2024 14:57:20 -0800 (PST)
Received: from mail.networkradius.com (mail.networkradius.com [62.210.147.122]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id A8A79C15155B; Mon, 5 Feb 2024 14:57:18 -0800 (PST)
Received: from smtpclient.apple (135-23-95-173.cpe.pppoe.ca [135.23.95.173]) by mail.networkradius.com (Postfix) with ESMTPSA id 64581340; Mon, 5 Feb 2024 22:57:15 +0000 (UTC)
Authentication-Results: NetworkRADIUS; dmarc=fail (p=reject dis=none) header.from=freeradius.org
Content-Type: text/plain; charset="us-ascii"
Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3696.120.41.1.1\))
Subject: Re: I-D Action: draft-ietf-bfd-secure-sequence-numbers-13.txt
From: Alan DeKok <aland@freeradius.org>
In-Reply-To: <44439748.3130092.1707169822661@mail.yahoo.com>
Date: Mon, 05 Feb 2024 17:57:13 -0500
Cc: "rtg-bfd@ietf.org" <rtg-bfd@ietf.org>, "draft-ietf-bfd-secure-sequence-numbers@ietf.org" <draft-ietf-bfd-secure-sequence-numbers@ietf.org>
Content-Transfer-Encoding: quoted-printable
Message-Id: <93A867DF-B02C-4AFA-807A-07154FB474F3@freeradius.org>
References: <170708692113.18679.11608906791082608290@ietfa.amsl.com> <374556851.3125699.1707169230117@mail.yahoo.com> <C564ABA6-2BBA-41C2-BF17-5C70153DE72D@freeradius.org> <44439748.3130092.1707169822661@mail.yahoo.com>
To: Reshad Rahman <reshad@yahoo.com>
X-Mailer: Apple Mail (2.3696.120.41.1.1)
Archived-At: <https://mailarchive.ietf.org/arch/msg/rtg-bfd/27bGMKMQkJjthtGin8feDPZ7OoY>
X-BeenThere: rtg-bfd@ietf.org
X-Mailman-Version: 2.1.39
Precedence: list
List-Id: "RTG Area: Bidirectional Forwarding Detection DT" <rtg-bfd.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/rtg-bfd>, <mailto:rtg-bfd-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/rtg-bfd/>
List-Post: <mailto:rtg-bfd@ietf.org>
List-Help: <mailto:rtg-bfd-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/rtg-bfd>, <mailto:rtg-bfd-request@ietf.org?subject=subscribe>
X-List-Received-Date: Mon, 05 Feb 2024 22:57:22 -0000

  Looking at the paper in more detail, I think we should be fine.

  The attacks are for things like "seed is all zero", which we don't care about here.

  The main take-away is to change the way we seed ISAAC a little bit, and we should be fine.  I'll work something out tomorrow.