[openpgp] Put Signature in an Email's Header

"Neal H. Walfield" <neal@walfield.org> Fri, 11 December 2020 10:14 UTC

Return-Path: <neal@walfield.org>
X-Original-To: openpgp@ietfa.amsl.com
Delivered-To: openpgp@ietfa.amsl.com
Received: from localhost (localhost []) by ietfa.amsl.com (Postfix) with ESMTP id 6D9573A08D6; Fri, 11 Dec 2020 02:14:37 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.899
X-Spam-Status: No, score=-1.899 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, SPF_NONE=0.001] autolearn=ham autolearn_force=no
Received: from mail.ietf.org ([]) by localhost (ietfa.amsl.com []) (amavisd-new, port 10024) with ESMTP id iQCcWEe-rB9W; Fri, 11 Dec 2020 02:14:36 -0800 (PST)
Received: from mail.dasr.de (mail.dasr.de []) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id DDA6B3A08D4; Fri, 11 Dec 2020 02:14:35 -0800 (PST)
Received: from pd9e79cc0.dip0.t-ipconnect.de ([] helo=forster.huenfield.org) by mail.dasr.de with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.86_2) (envelope-from <neal@walfield.org>) id 1knfRZ-0003KN-NG; Fri, 11 Dec 2020 10:14:33 +0000
Received: from grit.huenfield.org ([] helo=grit.walfield.org) by forster.huenfield.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from <neal@walfield.org>) id 1knfRZ-0000zX-9s; Fri, 11 Dec 2020 11:14:33 +0100
Date: Fri, 11 Dec 2020 11:14:33 +0100
Message-ID: <878sa4y7hy.wl-neal@walfield.org>
From: "Neal H. Walfield" <neal@walfield.org>
To: Wiktor Kwapisiewicz <wiktor=40metacode.biz@dmarc.ietf.org>
Cc: openpgp@ietf.org
In-Reply-To: <cd02d2db-0671-dfc0-dab3-dc793a2c1605@metacode.biz>
References: <48be3fcf-cdce-9ef4-655b-63b6dddf9310@kuix.de> <20201211095836.5218a72e@computer> <cd02d2db-0671-dfc0-dab3-dc793a2c1605@metacode.biz>
User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM/1.14.9 (Gojō) APEL/10.8 EasyPG/1.0.0 Emacs/26 (x86_64-pc-linux-gnu) MULE/6.0 (HANACHIRUSATO)
MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue")
Content-Type: text/plain; charset="ISO-8859-1"
Content-Transfer-Encoding: quoted-printable
X-SA-Exim-Mail-From: neal@walfield.org
X-SA-Exim-Scanned: No (on forster.huenfield.org); SAEximRunCond expanded to false
Archived-At: <https://mailarchive.ietf.org/arch/msg/openpgp/73iioAe5RKRfGyjEDlSEowL0Lro>
Subject: [openpgp] Put Signature in an Email's Header
X-BeenThere: openpgp@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: "Ongoing discussion of OpenPGP issues." <openpgp.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/openpgp>, <mailto:openpgp-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/openpgp/>
List-Post: <mailto:openpgp@ietf.org>
List-Help: <mailto:openpgp-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/openpgp>, <mailto:openpgp-request@ietf.org?subject=subscribe>
X-List-Received-Date: Fri, 11 Dec 2020 10:14:38 -0000

On Fri, 11 Dec 2020 10:03:44 +0100,
Wiktor Kwapisiewicz wrote:
> On 11.12.2020 09:58, Hanno Böck wrote:
> > FWIW I have heard lots of complains about the signature attachment,
> > which is why I stopped sending signed emails by default a long time ago.
> Too bad signatures cannot be put into headers (just like DKIM
> signatures). That would not confuse people (because they generally
> don't inspect headers) while providing necessary info for clients that
> understand them.

When you say cannot, I think you mean there is no standard to so.
Technically, I think, it is possible, and it is a neat idea.