Return-Path: X-Original-To: openpgp@ietfa.amsl.com Delivered-To: openpgp@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id EBE631200F6 for ; Mon, 1 Apr 2019 20:34:47 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.849 X-Spam-Level: X-Spam-Status: No, score=-1.849 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, KHOP_DYNAMIC=0.85, RCVD_IN_DNSWL_LOW=-0.7, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=icloud.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id PTQg_O-FvqYM for ; Mon, 1 Apr 2019 20:34:46 -0700 (PDT) Received: from mr85p00im-ztdg06021801.me.com (mr85p00im-ztdg06021801.me.com [17.58.23.195]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id AC61C1200D7 for ; Mon, 1 Apr 2019 20:34:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=icloud.com; s=04042017; t=1554176085; bh=JWKEnucjYmJVr42kBy0h9u5iVetIVVJ3hfCt4F23tNQ=; h=Content-Type:Mime-Version:Subject:From:Date:Message-Id:To; b=d1vnl7voF19Rpa3XcRwH+3znIuhtBZPD5HKRcrtWou1lmN6CWeb6KdXA6ZsRUWkt8 GrSgu2YSt4LTy2aV2ooiRnFkxDaiwjM3FrzJt5CZbCiogJLgj21ta27UYO8yvzyNOI 53Sl1HyXIIRBPBerTzkoS2bGkMBGT9vEPIv1oxW81mrMkVTN2qccm492PYJ/ldsFDP 2O7057VEoB3pQm5w3zFu6Q8mQ2B7B/rAz2SBmuPDiV28Fq3B1mB8fx8ekxwcBzwY9Y Qxq2qhEkZakBpbalJca4vTJUougFX45+RHFjk1HV/MzeSZ1JUCyBh11OXdOeQpALI3 aCZtZACeQYi6A== Received: from [192.168.7.69] (thing1.merrymeet.com [173.164.244.99]) by mr85p00im-ztdg06021801.me.com (Postfix) with ESMTPSA id BCD93180149; Tue, 2 Apr 2019 03:34:45 +0000 (UTC) Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (Mac OS X Mail 12.2 \(3445.102.3\)) From: Jon Callas In-Reply-To: <20190402014643.96606406B6@smtp.hushmail.com> Date: Mon, 1 Apr 2019 20:34:44 -0700 Cc: Jon Callas , Daniel Kahn Gillmor , openpgp Content-Transfer-Encoding: quoted-printable Message-Id: <05B2C0AA-E6EF-4C6A-BE17-A2814AFBF2C5@icloud.com> References: <20190331121024.cgta3emx6vefex6x@aurora.local.incenp.org> <87k1gebu9o.fsf@fifthhorseman.net> <20190402014643.96606406B6@smtp.hushmail.com> To: vedaal@nym.hush.com X-Mailer: Apple Mail (2.3445.102.3) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-04-02_01:, , signatures=0 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=1 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1011 mlxscore=0 mlxlogscore=524 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1812120000 definitions=main-1904020024 Archived-At: Subject: Re: [openpgp] New S2K specifiers? X-BeenThere: openpgp@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Ongoing discussion of OpenPGP issues." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 02 Apr 2019 03:34:48 -0000 > On Apr 1, 2019, at 6:46 PM, vedaal@nym.hush.com wrote: >=20 > Will the new S2K be only for the V5 key format? > Or will it also be used for Conventionally Encrypted messages? It would be for any key, or for conventionally encrypted messages. >=20 > If it will be used for Conventionally Encrypted messages too, then = there can be backward incompatibility issues,=20 > as well as intercompatibility issues with different implementations. >=20 > (I still think it's a good idea, but may be a really lot of extra = work, so maybe only for V5 keys now). Remember, definition is not implementation. You=E2=80=99re right that = from an implementation standpoint, it might be best to make messages = default to the old S2K for a while, but do it for V4 and V5 keys as = well. Jon