IETF Logo Mail Archive

Re: [CFRG] Update of the AEGIS draft

Frank Denis <cfrg@pureftpd.org> Sun, 14 May 2023 11:58 UTC

Return-Path: <cfrg@pureftpd.org>
X-Original-To: cfrg@ietfa.amsl.com
Delivered-To: cfrg@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 04AEBC151B1E for <cfrg@ietfa.amsl.com>; Sun, 14 May 2023 04:58:28 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.095
X-Spam-Level:
X-Spam-Status: No, score=-2.095 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, HTML_MESSAGE=0.001, RCVD_IN_ZEN_BLOCKED_OPENDNS=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001, URIBL_DBL_BLOCKED_OPENDNS=0.001, URIBL_ZEN_BLOCKED_OPENDNS=0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=pureftpd.org; domainkeys=pass (2048-bit key) header.from=cfrg@pureftpd.org header.d=pureftpd.org
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 px0iIopDVPa7 for <cfrg@ietfa.amsl.com>; Sun, 14 May 2023 04:58:23 -0700 (PDT)
Received: from mailout-uk.mx.c9x.org (mailout-uk.mx.c9x.org [137.74.223.233]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA512) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id B4607C14CE31 for <cfrg@irtf.org>; Sun, 14 May 2023 04:58:21 -0700 (PDT)
Received: from msync.c9x.org (localhost [127.0.0.1]) by msync.c9x.org (OpenSMTPD) with ESMTP id f888f497; Sun, 14 May 2023 13:58:12 +0200 (CEST)
DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=pureftpd.org; h=from :message-id:content-type:mime-version:subject:date:in-reply-to :cc:to:references; s=selector1; bh=SSpedzziRvpRhYRHMKKIj1T9dwE=; b= Pja35R21dmGbyrOcE74RiZNRT7TXWUufBCTq80xjJDESJJIr4bPTrZYA2kgJsLT+ mhZ94jE730QU9PFH87p5OnI/ptfygUmByAMJqemkD7qLLGtsYaaro/mF8QA7b7Lo fySf8oOLW8C6Easn7GkWavi+NfsdKhiCC0v45EosMnuWQohm2n5oBUTIh46r4/+E 23hWX+2Mf/qrxNvFDbCYJFIN9GWOvKN0bpxaD7b2jUHNs+213XkvHvktiNB5kZRD Hel70Fx8oFvOp0bsp3eWcPPg+79ej1QxhI7j1ese0FMxjvrRcf7aOMcSK/xQwLtH 8HnoOAPifKFDTW26wYIsmA==
DomainKey-Signature: a=rsa-sha1; c=nofws; d=pureftpd.org; h=from :message-id:content-type:mime-version:subject:date:in-reply-to :cc:to:references; q=dns; s=selector1; b=UaP4CgLJWsStiHosjGZDdG9 WWqAz29yFeFVzuuq1a8TJRetvTQEE/X4ed1WrqIzNkioc8o3b8qIe8UoK2PbfwwN SAVzc0X4grE8v2uYJ6Q5trTZAfXlnNb2af9lLiC9gkOv7cvH7d9YC0IGqwmwgcBv RhPHOlfjg8b4VMujxw4VDRXr4KsV6GnOVoA4znzzGfqWJ6Kdl2gx9j8+HsG+agyh 93Xj49HYNhSeuauJbsQBlZRIp0udjtWM7fBOJg6Qd46eCG5fSfahqlTGXTxnHViY HLA4YtBI7BgrDFhnnqoF44Hu2VOWLtahR2SMeqPsHolQoI6khraP71AjVgDchNg= =
Received: from smtpclient.apple (nogent.c9x.org [82.66.97.28]) by premiere.mx.c9x.org (OpenSMTPD) with ESMTPSA id 81628717 (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256:NO); Sun, 14 May 2023 13:58:12 +0200 (CEST)
From: Frank Denis <cfrg@pureftpd.org>
Message-Id: <5974E457-7230-4BFD-A058-6670D80D8C43@pureftpd.org>
Content-Type: multipart/alternative; boundary="Apple-Mail=_6670CB2A-F453-48FC-8E11-1F85C2C1234C"
Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3731.600.7\))
Date: Sun, 14 May 2023 13:58:01 +0200
In-Reply-To: <GVXPR07MB9678239873EBB9A9032A1D21897B9@GVXPR07MB9678.eurprd07.prod.outlook.com>
Cc: IRTF CFRG <cfrg@irtf.org>
To: John Mattsson <john.mattsson=40ericsson.com@dmarc.ietf.org>
References: <2F9EE079-3605-4451-BA69-99F12CE7AE38@pureftpd.org> <CAMjbhoX4OYhRnW0VkDWLxCH7LB_mPJ7HdYnM1FUu8D9EAR_XVg@mail.gmail.com> <GVXPR07MB9678239873EBB9A9032A1D21897B9@GVXPR07MB9678.eurprd07.prod.outlook.com>
X-Mailer: Apple Mail (2.3731.600.7)
Archived-At: <https://mailarchive.ietf.org/arch/msg/cfrg/UyoIxVCLABkEbPIead3gkgr255o>
Subject: Re: [CFRG] Update of the AEGIS draft
X-BeenThere: cfrg@irtf.org
X-Mailman-Version: 2.1.39
Precedence: list
List-Id: Crypto Forum Research Group <cfrg.irtf.org>
List-Unsubscribe: <https://www.irtf.org/mailman/options/cfrg>, <mailto:cfrg-request@irtf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/cfrg/>
List-Post: <mailto:cfrg@irtf.org>
List-Help: <mailto:cfrg-request@irtf.org?subject=help>
List-Subscribe: <https://www.irtf.org/mailman/listinfo/cfrg>, <mailto:cfrg-request@irtf.org?subject=subscribe>
X-List-Received-Date: Sun, 14 May 2023 11:58:28 -0000

Hi John

> On May 14, 2023, at 13:20, John Mattsson <john.mattsson=40ericsson.com@dmarc.ietf.org> wrote:
> 
> Is there anything that can be said about the confidentiality and integrity advantages when using AEGIS?
> 
> It would be nice to be able to compare with AES-GCM which have
> 
> CA  ⪅ s^2 / 2^129
> IA  ⪅ v * l / 2^127

The confidentiality advantage should be ≤ 1/2^128 regardless of s and l in a nonce-respecting scenario [1]

And the integrity advantage should be ≤ v^2/2^129.

[1] https://tosc.iacr.org/index.php/ToSC/article/view/8468

v2.23.0 | Report a Bug | By Email