From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.emacs.gnus.general/37522 Path: main.gmane.org!not-for-mail From: Simon Josefsson Newsgroups: gmane.emacs.gnus.general Subject: Re: encrypted mails and quoted-printable Date: Sun, 05 Aug 2001 16:02:28 +0200 Message-ID: References: <2ny9oz4q77.fsf@piglet.jia.vnet> NNTP-Posting-Host: coloc-standby.netfonds.no Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: main.gmane.org 1035172922 14339 80.91.224.250 (21 Oct 2002 04:02:02 GMT) X-Complaints-To: usenet@main.gmane.org NNTP-Posting-Date: Mon, 21 Oct 2002 04:02:02 +0000 (UTC) Return-Path: Return-Path: Original-Received: (qmail 21304 invoked from network); 5 Aug 2001 14:01:12 -0000 Original-Received: from dolk.extundo.com (195.42.214.242) by gnus.org with SMTP; 5 Aug 2001 14:01:12 -0000 Original-Received: from barbar.josefsson.org (slipsten.extundo.com [195.42.214.241]) (authenticated) by dolk.extundo.com (8.11.3/8.11.3) with ESMTP id f75E1Fw14766 for ; Sun, 5 Aug 2001 16:01:16 +0200 Original-To: ding@gnus.org In-Reply-To: (Andreas Jaeger's message of "Sun, 05 Aug 2001 14:54:39 +0200") Mail-Copies-To: nobody User-Agent: Gnus/5.090004 (Oort Gnus v0.04) Emacs/21.0.104 Original-Lines: 22 Xref: main.gmane.org gmane.emacs.gnus.general:37522 X-Report-Spam: http://spam.gmane.org/gmane.emacs.gnus.general:37522 Andreas Jaeger writes: >> QP encoding is to avoid the article to be mangled. Though a message >> contains only ASCII, lines starting with "From " or so be mangled. > > I see - but that's rather unfortunate. Is there no way to avoid this? > I'd rather don't use QP. Then you'd be breaking the PGP/MIME specification, and the receiver probably couldn't validate your message. 3. Content-Transfer-Encoding restrictions Multipart/signed and multipart/encrypted are to be treated by agents as opaque, meaning that the data is not to be altered in any way [1]. However, many existing mail gateways will detect if the next hop does not support MIME or 8-bit data and perform conversion to either Quoted-Printable or Base64. This presents serious problems for multipart/signed, in particular, where the signature is invalidated when such an operation occurs. For this reason all data signed according to this protocol MUST be constrained to 7 bits (8- bit data should be encoded using either Quoted-Printable or Base64).