IETF Logo Mail Archive

Re: [HAM-AG] [IPv6] Request for feedback: draft-evan-amateur-radio-ipv6

Donald Eastlake <d3e3e3@gmail.com> Wed, 15 February 2023 19:58 UTC

Return-Path: <d3e3e3@gmail.com>
X-Original-To: ham-ag@ietfa.amsl.com
Delivered-To: ham-ag@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 69CD6C13612D; Wed, 15 Feb 2023 11:58:23 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.848
X-Spam-Level:
X-Spam-Status: No, score=-1.848 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_ZEN_BLOCKED_OPENDNS=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 (2048-bit key) header.d=gmail.com
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 8mdf0jQgpEFm; Wed, 15 Feb 2023 11:58:23 -0800 (PST)
Received: from mail-ed1-x535.google.com (mail-ed1-x535.google.com [IPv6:2a00:1450:4864:20::535]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 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 0C31DC15257C; Wed, 15 Feb 2023 11:58:23 -0800 (PST)
Received: by mail-ed1-x535.google.com with SMTP id d40so24033062eda.8; Wed, 15 Feb 2023 11:58:22 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:from:to:cc:subject:date:message-id:reply-to; bh=NAwU0R6KbBMKLdKtoLb7Nk5o7GDs1mseacr/d43fsw0=; b=NhXCRKUsLDaXbV1zyh+eIzcDEWLYO3W5xYBjngR/Eq+C90yCoGruzrp7LB/qAMDYr/ EuxinI298Jma41Aw5m1c0z2rTssHUMJmIKi60w04LbUo6tEYBrA7ZtKOJ9dnLfLwWmzA ZM6cJnuGtYxydENGCaC7x4uXKSVGMXzez26PC+AzrpvG1ebPOaURMh7oVXG3nKKoVW/4 Uc3MQaA2/IXA7HTcNpbjyY/eyxJkqs/rH8wiH453og+ywG/LX1FO7OzGd2mvGh9dzVTj THZhGsYLqx2Kq9rvO6ryLfpfs5ucvMM48X0s6Dk7VzbzxDBQKMP2wAyKA49+roTGBUAl Iy2A==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=NAwU0R6KbBMKLdKtoLb7Nk5o7GDs1mseacr/d43fsw0=; b=T90ZriK2UitAthXml9KWat49rvv6o+mYGBGiJ2l1THnBe36qN9eV3L6SoJhhFGww84 LCItMdqw0xPqWwLi/vJvGqwoL4X62zpuC9HQlRcSg3bBfIwnLvdVEJPhK6jVCCGxRHqB C0TTZFAxIBH7epwdELyoaI2E83h+Rxuk08ynKWW/l6Ao+8GOMvEwCYz8zc+OrujiyQ4M uSaNwEORsvazWW7og8t/b8AoTAUlLUbPetUzO+jhZ/9ARsiZ+DRtgDYFi9yjpgcUEYOv Rd6ecP2RwZLUjKJdHfIzNw0tbnH+dPjbIvLLLisQz264PnvOc8TYzgFRc+j7eO9MAO/z 4nmw==
X-Gm-Message-State: AO0yUKXX9+Xu4ukt2i6JxBCsm1IikuC90MrBBEPvIXjB7pmuixZ3M1X2 wgYPMUNajaxsJZjNn/ly6IWIGmZsRQjFXwEO2g/YxR0wxr4=
X-Google-Smtp-Source: AK7set+J4gqTCK7MuQesBtZHLcVBL+KdE1btYekE5zH+JeyZgPg8iZ0PU+sWSNNBdy6P2iYlSbqqsMhzPnuHPUlDh00=
X-Received: by 2002:a17:906:88b:b0:878:6169:71a6 with SMTP id n11-20020a170906088b00b00878616971a6mr1692989eje.5.1676491101475; Wed, 15 Feb 2023 11:58:21 -0800 (PST)
MIME-Version: 1.0
References: <CAD=s3w5UUgiNC=SJxigAj7TS_QHDfk+KBiWq846rVcqmRxxtLQ@mail.gmail.com> <5420a784-0c57-e40f-3e45-dd3bd9c393ea@gmail.com>
In-Reply-To: <5420a784-0c57-e40f-3e45-dd3bd9c393ea@gmail.com>
From: Donald Eastlake <d3e3e3@gmail.com>
Date: Wed, 15 Feb 2023 14:58:09 -0500
Message-ID: <CAF4+nEGh3J0wO7+9jcHoQErcW8=hXD+sh9DLJ7QWYUoBsmLAQg@mail.gmail.com>
To: Alexandre Petrescu <alexandre.petrescu@gmail.com>
Cc: Evan Pratten <ewpratten@gmail.com>, IPv6 <ipv6@ietf.org>, ham-ag@ietf.org
Content-Type: text/plain; charset="UTF-8"
Archived-At: <https://mailarchive.ietf.org/arch/msg/ham-ag/gQyIUlyZpv6XpQgPb11MXr7kNb8>
Subject: Re: [HAM-AG] [IPv6] Request for feedback: draft-evan-amateur-radio-ipv6
X-BeenThere: ham-ag@ietf.org
X-Mailman-Version: 2.1.39
Precedence: list
List-Id: HAM Radio Operators Affiliate Group <ham-ag.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/ham-ag>, <mailto:ham-ag-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/ham-ag/>
List-Post: <mailto:ham-ag@ietf.org>
List-Help: <mailto:ham-ag-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/ham-ag>, <mailto:ham-ag-request@ietf.org?subject=subscribe>
X-List-Received-Date: Wed, 15 Feb 2023 19:58:23 -0000

Hi,

On Wed, Feb 15, 2023 at 5:10 AM Alexandre Petrescu
<alexandre.petrescu@gmail.com> wrote:
>
> Hi, Evan,
>
> Thank you for this message.
>
> I reply because I just applied for a listener identifier (F-something).
> Maybe one day I could find an use in converting it to an IPv6 address,
> without involving too many computers.
>
> I have read the draft.  It says to use SHA-256 and compute a 64bit IID.
>
> ...
>
> - optionally use something else than SHA-256, maybe something that can
>    be quantum-resistant (an algo implemented on classical computers that
>    can resist attacks potentially using quantum computers).

I'm not sure the hash even needs to be cryptographic. The desirable
properties are (1) that it changes the call sign to a fixed length or
at least relatively short bounded length and (2) that it has good
dispersion so collisions are not substantially more likely than if the
hashes were random. Given that stations are required to periodically
broadcast their call sign in the clear, what would it matter if the
hash was relatively easy to invert?

Thanks,
Donald
===============================
 Donald E. Eastlake 3rd   +1-508-333-2270 (cell)
 2386 Panoramic Circle, Apopka, FL 32703 USA
 d3e3e3@gmail.com

v2.23.0 | Report a Bug | By Email