IETF Logo Mail Archive

[CFRG] Re: RG Last Call on draft-irtf-cfrg-hybrid-kems-12 and draft-irtf-cfrg-concrete-hybrid-kems-04

Neil Madden <neil.e.madden@runbox.eu> Sat, 11 July 2026 12:37 UTC

Return-Path: <neil.e.madden@runbox.eu>
X-Original-To: cfrg@mail2.ietf.org
Delivered-To: cfrg@mail2.ietf.org
Received: from localhost (localhost [127.0.0.1]) by mail2.ietf.org (Postfix) with ESMTP id 7A118115084CD; Sat, 11 Jul 2026 05:37:54 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ietf.org; s=ietf1; t=1783773474; bh=p+F8uGRGLsMbP4LRaI0fQydF+1m61mO8/odl2/pmZHI=; h=From:Subject:Date:References:Cc:In-Reply-To:To; b=GtIP6hmCdPOMvp4QIxdZSa2DQM/GIIrw/dx9dTA9Gz7eCqbjFFr0vxpcUo9rhzHcC DNRmdibtrbaj/10OiPumTjkhCpoli1Ym1ynUME0jh7WzX0MAUWwYzNXP0qCSWzJpkq Gx5+u7f3DalcS+cHE/JUDOlpdYq51H7Kzdt5uKvo=
X-Virus-Scanned: amavisd-new at ietf.org
X-Spam-Flag: NO
X-Spam-Score: -2.8
X-Spam-Level:
X-Spam-Status: No, score=-2.8 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_FROM=0.001, RCVD_IN_DNSWL_LOW=-0.7, SPF_PASS=-0.001] autolearn=ham autolearn_force=no
Authentication-Results: mail2.ietf.org (amavisd-new); dkim=pass (2048-bit key) header.d=runbox.eu
Received: from mail2.ietf.org ([166.84.6.31]) by localhost (mail2.ietf.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Bql_TxxrEWuc; Sat, 11 Jul 2026 05:37:53 -0700 (PDT)
Received: from mailtransmit05.runbox.com (mailtransmit05.runbox.com [IPv6:2a0c:5a00:149::26]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature ECDSA (P-256) server-digest SHA256) (No client certificate requested) by mail2.ietf.org (Postfix) with ESMTPS id AC6D9115084C7; Sat, 11 Jul 2026 05:37:53 -0700 (PDT)
Received: from mailtransmit03.runbox ([10.9.9.163] helo=aibo.runbox.com) by mailtransmit05.runbox.com with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (Exim 4.93) (envelope-from <neil.e.madden@runbox.eu>) id 1wiWxs-008mXz-BW; Sat, 11 Jul 2026 14:37:52 +0200
DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=runbox.eu; s=selector2; h=To:In-Reply-To:Cc:References:Message-Id:Date:Subject: Mime-Version:From:Content-Transfer-Encoding:Content-Type; bh=p+F8uGRGLsMbP4LRaI0fQydF+1m61mO8/odl2/pmZHI=; b=tmRELLOtamNSJULXJkX1GHdn3n sigl5Xqy/Cmi03etT/+C2upKyMtP+ucF432J5ZVj7oeXvFusaE0k/L4/x7JWoxHjYyowrTj1vU1L9 B1aKC+1SQqbW92MCKUpilUlERzTepHUHzGecpxD4PcdBpaeTIOjZ4gdEX6MdQHJvJNntGYRY6O4Dr SIm5FsSFNE7nCOCapttB2SAElSmcLXGMlze8cWCKLgAUyDVrPP3H2F8Z0Cjsmo8FBSdXtRA0/Sl0T cjtdBqS1u/5JlQvd80kPh1yjiBC3vfRsR7hdr7lF0fOXCKD4W1hhzzMC68E7aIsxYEqKelyJjtynK YU8uDTWQ==;
Received: from [10.9.9.73] (helo=submission02.runbox) by mailtransmit03.runbox with esmtp (Exim 4.86_2) (envelope-from <neil.e.madden@runbox.eu>) id 1wiWxs-0007VR-0w; Sat, 11 Jul 2026 14:37:52 +0200
Received: by submission02.runbox with esmtpsa [Authenticated ID (1456009)] (TLS1.2:ECDHE_SECP256R1__RSA_PSS_RSAE_SHA256__AES_256_GCM:256) (Exim 4.95) id 1wiWxk-007IY9-Df; Sat, 11 Jul 2026 14:37:44 +0200
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: quoted-printable
From: Neil Madden <neil.e.madden@runbox.eu>
Mime-Version: 1.0 (1.0)
Date: Sat, 11 Jul 2026 13:37:41 +0100
Message-Id: <D2D00E64-8D68-486E-9C58-71E78C0813D4@runbox.eu>
References: <31D56016-A45C-4773-8091-DD8A204D428B@runbox.eu>
In-Reply-To: <31D56016-A45C-4773-8091-DD8A204D428B@runbox.eu>
To: Nick Sullivan <nicholas.sullivan@gmail.com>
X-Mailer: iPhone Mail (23F81)
Message-ID-Hash: OCDMEN5U6M54AWWNYLGZ55YZ56H2GJCM
X-Message-ID-Hash: OCDMEN5U6M54AWWNYLGZ55YZ56H2GJCM
X-MailFrom: neil.e.madden@runbox.eu
X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-cfrg.irtf.org-0; header-match-cfrg.irtf.org-1; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header
CC: CFRG <cfrg@irtf.org>, cfrg-chairs@ietf.org
X-Mailman-Version: 3.3.9rc6
Precedence: list
Subject: [CFRG] Re: RG Last Call on draft-irtf-cfrg-hybrid-kems-12 and draft-irtf-cfrg-concrete-hybrid-kems-04
List-Id: Crypto Forum Research Group <cfrg.irtf.org>
Archived-At: <https://mailarchive.ietf.org/arch/msg/cfrg/Iav_MuNTEwaEzob9bDTDYlCOMWY>
List-Archive: <https://mailarchive.ietf.org/arch/browse/cfrg>
List-Help: <mailto:cfrg-request@irtf.org?subject=help>
List-Owner: <mailto:cfrg-owner@irtf.org>
List-Post: <mailto:cfrg@irtf.org>
List-Subscribe: <mailto:cfrg-join@irtf.org>
List-Unsubscribe: <mailto:cfrg-leave@irtf.org>


> On 11 Jul 2026, at 11:42, Neil Madden <neil.e.madden@runbox.eu> wrote:
> 
> 4.3:
> 
> If the PRG takes a seed and returns a fixed-size output, isn't it in fact a PRF instead?

Sorry, ignore this - I meant to delete this before sending.

— Neil

v2.46.0 | Report a Bug | By Email | System Status