Re: [openpgp] Message padding in OpenPGP

Heiko Stamer <HeikoStamer@gmx.net> Tue, 24 September 2019 19:18 UTC

Return-Path: <HeikoStamer@gmx.net>
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 705C7120942 for <openpgp@ietfa.amsl.com>; Tue, 24 Sep 2019 12:18:17 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.699
X-Spam-Level:
X-Spam-Status: No, score=-2.699 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, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=gmx.net
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 1T5nk-uQHOW3 for <openpgp@ietfa.amsl.com>; Tue, 24 Sep 2019 12:18:15 -0700 (PDT)
Received: from mout.gmx.net (mout.gmx.net [212.227.17.22]) (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 10F6C120949 for <openpgp@ietf.org>; Tue, 24 Sep 2019 12:18:14 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1569352690; bh=evqq24GGFiXK61NNiorIxl028pYmKQHPdORAy8GKoJY=; h=X-UI-Sender-Class:Subject:To:References:From:Date:In-Reply-To; b=Eu3I9iwYXVPrE420OgHdbIdGu+HRYpOXlvy/kXHB3PH22FdxN3PZ8Txe/QiAYnWGC cIsIfaS1j/WMFVepK3ytOX5AAJOxviHfchIrFfWNj92lKjs42OEQt1Db7EKrnjxmT+ pDy5n9SWJnQ1MDCbcOwfUhSiUo7FKU0eB6plD3mI=
X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c
Received: from [192.168.178.30] ([80.132.224.133]) by mail.gmx.com (mrgmx105 [212.227.17.168]) with ESMTPSA (Nemesis) id 1MiJZO-1hikYp1Lss-00fOEh for <openpgp@ietf.org>; Tue, 24 Sep 2019 21:13:05 +0200
To: openpgp@ietf.org
References: <CA+t5QVsZoWEuDWEzGn+mWNsx+giJsq+9pYptt3TfffASBVoGsw@mail.gmail.com>
From: Heiko Stamer <HeikoStamer@gmx.net>
Autocrypt: addr=HeikoStamer@gmx.net; prefer-encrypt=mutual; keydata= mQGiBDdYKNkRBACRdsFzaQn0HChOX38WHXlIYcNZAAxBQxa7gdmPXTUK+tgwQuwAr/XViQxn ExKwyOteRhwHZNSYdoKPlCOJ3c3FWCKAdflINr53NvN/qnnaF+3M1HaluiwVdfHD9a0+k7fd NFZMq2bTpzSCQBsPGipSK0K8ET8UPrXm54pXhqYL2wCgsuMBOv64bmg2zjg6vHSTKADGykcD /Agjoa7y7Cpifk4WEKDKu8nlrE9OFOJppjZ9bdJedrmZq5A/jHr35UOgbZItTmgBiz7bfMLq 7HD05ZQ3BplBmmiE0412f55GadCjN4vvnCdTqZ/ewzWdz/rzQGaJm9IvW6rupuFgrTx0GJhf we7cr6GQQo0nqA0LMCyhGHQASC56A/9NOroBzLM6wl9QlE9lybxd3cxI2UnrfHIu63tklFKF vL1XnjyJ4YR0sDs6/f56JbtEGUKTCI7ZAw+241Va4MrbDVmmsGJjQBcKxNbHDfkkjoJ9NBwr pUo2nMT3BWyKHCfnMqoyT+nN04b0Em1ffbhptKiLJSeY1mcPxvA1h7PrKbQiSGVpa28gU3Rh bWVyIDxoZWlrb3N0YW1lckBnbXgubmV0Poh4BBMRAgA4AhsDAh4BAheAFiEEdvcwETKdJ9uN fD+XT1hOuPsr4U8FAlzqvfMFCwkIBwIGFQoJCAsCBBYCAwEACgkQT1hOuPsr4U8jZQCfbz7N emwAJ2OdrBP9mmsySktb4IQAnRWJOYy4bH3R42nh6KCUkbDXQoNhuQMNBDdYKtkQDACuGU2S WXmjpoyGIX/UHze60OolxBdtKzhvDZHhy1Sz8NNrdkI3ozuYOMxkKZZLTw/iQigVNQfwy+5f AUw6KaH8OPnwInqyeguI6PwG0qQK2cWlSTZDlTW8B2D3Qpjt8sYnnjGEIGKGb7ZAUgODmWYd sS35otyEQT0Un/kRIqjyQcvWgNH++t+LypXUxu0eD0dlD/kx46TP9kqTYsr/8vWWhD2J98x0 ZFrFMN8QDCIhO9x3p+qPyfSiAdnuI4iN1RYsKtC2ikb+cIc5bYysnRots1anAy3Pd5Q8bFtj lzxPPRh90v/Yq5RM/3IgbsbS0zDI0ldznld+DInezLs/EROsITmmbXrhIAHC8TjcXtxWR3ht nFLnIgmQ3Rag0bQesNF4Y5bXSGcw/MxwWcm6EXwcbm7Uc64k8YxXMYyNy+XX/bi1o7r5JdH0 mKUFeXTF9WLrNpF4jBylHk1RNDbR6kp6M87vPJeg/nQh19ItQQxYJGYu9KBhBGhFtDUIAyLT nTcAAwUL/2tHe52rFeCVvZo7RZ5SQy/aclx7hnPsvb3yTXcvg5c7hweOL7Zfsh/XnE3acRO0 YAfGb0LxMFJlfpHgcPuTZEd5rPgJz68GccACBPw8Z8MgQEBE5H/UiAR/HM9AQmEN+wfjeDlv 6ZGElmnY59gYIuCGUVsqw5pwCCsLBs3xlMTyCiNwDHERRao3YTGhaNy9hsCdqNHQcXdSzdF6 OtvfMnXI67QGyiNcbjVwXwQHlGAsxo4O3FMOl138o1Oa00JMSk7td8bClMAp7Hu4zrw533TZ 2Avp+6OFjUAQ4U4hdEDGePNm2hbQinKnUCd30PboqIdZDmYq4SSeNMbWKwy3Etx/a0GX39F/ gnjmveBHSWGGB+wSKcrK3yfXNXMa4OW683m/aH1msS0L0SFwbm2w7XdALp0DCV031x1JoGAn c0mVcstbVM7KNUGnCOA9D4USKHrj/IoZVoapx0b+bWPFHtfLhcm2lSDlq7F140DlQVL1xZmA nPcpLyXMmEmnS2JCZYhGBBgRAgAGBQI3WCrZAAoJEE9YTrj7K+FPcRMAnige4x75lK1p7sbK sdhZb6tv4CJPAKCpDqRn9o7nfvLlouXNaIR1nri7c7kErgRPbbDUEQwA29DKEVd+djjC5B7e jHwAb2EbbVbapdz0JAftKEiTvETd8WqpRRhvhDoGJn+v3ysOp6pKzyOtCFPQoN8559cgqA+e MMrarkufk7NxyFmuq7VILm4VSouUFgDNttHB63nAT/7FnRY/ccvJClL5vrVwMiioBVmXEJTw 8Nnw36tZoerE68uG8jS/cJjypmXhWoSSVQAKjC/ErQ5z/qNzJqAsem+eV/LHUd2BLK+u7r7Q 98ksKUpmEp5xVCox8HF1JwcG7QdJndVUCHHiV2fWDdIM0P8DCbagLZ+jQWMky/BvJL04ejnh t2O1YDyKaz3PzLMKk/Sbf9tIDw1iKJL3PQNNsu3cPOORmGsZQbfX940qiqdfD0+V3gmCjKBg TtFM/lJFkcMC0H1XfwQZBADudRIqqZp6AKkznpu8fmH3ut6C7Gl7ZXib5dNSPFIWfjBxrGnb STNChlYg0AEy5Lsm80oo7ef8VymQ/Vg/EoSVJT4vke5sY669W7lshZVcKVaqUt4/AQD/DO6J 9jyHVVwvopSC9E17qd/9qIHvrY+m/wdaGEdcHwwAsP7Sqj7SdBn/BmeSLJiXqZ+OwhOEbv6B A3ZJExEuIlNm+46tuyi1hxczbZ5ZWfOCpVPTSYBIuyl31OR1S6ef1iAGY8kkFF+3tkmbu+nQ 2dpyyfw20ZnKFkWG0IhZhQZwMANrQ9nuQVEXMc3c1cybuiNTDeIA0wLwlnYkzoPYRk/aXUQj kYvaexfQsfBrbn2qU6YtE/aRybgBoGkuJn6tSwfa4LeMA5S5p8aF/pDKRNm5vt0LpxcqPrSI pzPeHD0Oucwv3ZqfDCTIOENZwBEPSyNz2XEA2b+bnKjggprFLguw5USwpca6F/eeXGArs278 WBdAmncAgdcvcDmjMJuaGke48n1zbDHYlC8NHGTUUvVpiJRZt2KLgIzIEz/5d1tiGUZqhYk2 c9o+lHjbnv4E+L+ITY8yPqyfWHV2aH3tKa7qoBX+EyGCtW9X42gATcj3ZzVBgWD5w3BnbIgW T0dLvieBFn4T25Fy80Md+cwj4yvcRgJsvZgkuR0UjoWDxgvpDACOnRYzI/WqTSBAS1T3vmfU VtjRdUCiYpptR+sNmj//nCRdy3yC8az0WHemmWmhhE4GUT6KqtD0WPBFb9L54hq5qWCzbjcR zPW8BZJAhjynhIp2ljLAskd+50dvpsOE6aL9vAlPySuRg95dFwa+425783Hvp5YIY/LloLtb YXyRH2nBLfmXGSt1JL4oOfCEWgwLENAOXel8+aet8HD7LN8OgP+971lJ5DtCSVs/Vw4I8NdV DlssId0NhoNW062Br5qmgga0fKiU4oU0SGDOWNBGp9oUW+jD0OhIiNIFLrsse8isZrQK1W5q 0zi+guiyBB7ftp5uJHSF7Y0Cc7rKSSFsMj1E+PTKDtHpcK+AFTEDiTlPmCNemNxwmm6LtM54 ybQ8R96psrbahOX2LeYhYTwXasKk9bQ6WTOt9biO9R4y/Z9Yy52LwMXCyHot+V4+TTG9iMe9 ZWYEe1bCMLBEh7E7RYVDWHpYmhW49/U23YdY/AeROldZzSduXZTgz8f64diIYAQoEQIAIBYh BHb3MBEynSfbjXw/l09YTrj7K+FPBQJZJr7xAh0DAAoJEE9YTrj7K+FPLrQAoKRZEWwU0+ME qEgFOCHIZDuFAh7mAKCVdunDvK+/J0blWkCXFNh6AgS8t4ipBBgRAgAJBQJPbbDUAhsCAGoJ EE9YTrj7K+FPXyAEGREIAAYFAk9tsNQACgkQWxEYjUGN7Fd3vwEA7Bu+0FRCGhORinzglpFz SBRAZ3kGjlLeGZI7peOLva8BALuQ6pZCXV2m1fW7HhHQWYY/IRHRgupXiq2l1kfUQ6uvwqYA nAqoUxzoiqZ0wzzBkhAQC/RbccnzAJ9ZuHUDUACXo2yW+8IpiyP6Rlgu7Q==
Message-ID: <8e156086-c73f-47bb-e643-4e589ac5e6a0@gmx.net>
Date: Tue, 24 Sep 2019 21:12:36 +0200
MIME-Version: 1.0
In-Reply-To: <CA+t5QVsZoWEuDWEzGn+mWNsx+giJsq+9pYptt3TfffASBVoGsw@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
Content-Language: en-US
Content-Transfer-Encoding: quoted-printable
X-Provags-ID: V03:K1:q9k16VIhsbNIvR7B0eSbGZuwlts5YWrC9vyjRau+SXwHdkVUiF1 OuMRZMFv1kdorqyj5OrhM2baysQ/JiF3jziT9e1KaZyhXb4Iwrfu4BCkMMUpXHd1VIpB1UC /tAUnF0P7Qb8c9/3V3xx6Env1eN4ZVl27Jg8Hloa7r6QdxYl4fvR7xeMI4RgZmYfR0Z/m5U ORZgBt3Y0RZe6zAh4ktww==
X-UI-Out-Filterresults: notjunk:1;V03:K0:bWGmm5+V8GU=:Dq+EZOb5VhhosO3gx7okgV glylZX4Y44g9DGJJ/6p1qFIrcn9yIO00tC8gJAkwhjV2WLRi7vG/0A4QF/hPWJRvvzwqxjRel wbw8xDcspBeWTC/4bCOFep7kWyyY6TagpggR3LnHS3M3Q8rqmgceYMlhfF4oWuTkorSJNpbiF atTdRBWciPKlRvydy4yyogzUOh1c7HxQz3GVWqm+klwbDHBiiU9+g6fXEzJUj2fwl45YFYci4 b3dQ7mxQ5eEMFkkv3B7RjPWfCmR9N1B+wL08/+4wclecQu5nWpnsz6BH5IGQsrNWt+Sr6Az56 I7ocekBcsdFzySKxm0YmEi8XerY34g21yb173xVt5fVtAad9ncEX2HqjHhg4DIWn2IFYBGdF4 PEdGbb8TVamWy0eS5lUJANdtV4QPB50hdOLTuq2KaClc5My9+fOLak+c+unpLGLwnAHenHwEQ XJq5UpYX42xItGazaIOPiCm2mZs5zwP3jcFgV8tOzT9qqTZKheabq9/QIB2VLJ/kMT6GVZ58G pLcUlZRw5696X4OY7xZNkZW5uHIWzOCdE6u4oevphQb5+jl74A5yNZS0zMrHo4XAI65pe0Ayg 8aHha8jfKg9U1jVxhslg8gmsXsfaTfjqa2XRA6jRNg7cJfSjLKI3KdC+qLJNAwHmIWMIfK9CQ vy4SN4zkODXXCokD3G1d55O9UyPFPMdvFswVwWGCFP9yt/JB5fmFQ6Kz2DpzvlFUMhY2TdFd6 Fw51LmUlV86B/gWFm5UX/OSg7Zl+KDuAiPg2TlaRrRtmrZyqRXWWNHhSXZe5E0iMm/82nPBUY tXER3Kmk/bF5/ISID8CCcA+cw6D061eJ03AW1Jf+RvmR/aOKYkGN0tFckz6t2HXFkSrGL17H8 +9Prhh2Cw5RBCJyLIs5x5fAeJ6AfYLr5smEMAespFmB0PBEuRAIGgBUyKzp62ixklHLBCwV4p qlcQwvQfVMnh6fKcnCS68bHz5PvMSnu8ErlDOWMzwQiA1k5IvkYPl9agQMPbzo4iyofWs8+kP Jy5gbOCk8ikusPchLyL9KPnESgSY36bKlYGaZT6F3I8vuxYskhwcoyq1OaW/u94rrr1GdG5DH jpXibWIJ1BdhqvMqkLvdMzHYrHqzCA5xReJ+qBl6WNileOt9EqSqipcdSGzOPu3KCa8EV70uj eyuYWfvlgBHgX600MDFpJWP5Pmwy5UqLfH6Kr0TT7db+PR8II/410W/swlS9phy55nFN2B25i QsNiQ9y+fNL7JnsSd1pwKAjnczvZyakG1qn8iavIbqO7g6VPiLMejsao+nuM=
Archived-At: <https://mailarchive.ietf.org/arch/msg/openpgp/EedSV8mCfqW3Mso-CdGnnBRNqMM>
Subject: Re: [openpgp] Message padding in OpenPGP
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: Tue, 24 Sep 2019 19:18:19 -0000

Justus Winter wrote:

> We are currently convinced that padding the compressed data stream is
> the best option, because as far as OpenPGP is concerned, it is
> completely transparent for the recipient (for example, no weird
> packets are inserted).

What's about keys that state no support for compression?

--
Heiko