From dev-return-39649-apmail-openoffice-dev-archive=openoffice.apache.org@openoffice.apache.org Thu Aug 1 14:29:56 2013 Return-Path: X-Original-To: apmail-openoffice-dev-archive@www.apache.org Delivered-To: apmail-openoffice-dev-archive@www.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id 66405101E0 for ; Thu, 1 Aug 2013 14:29:56 +0000 (UTC) Received: (qmail 71383 invoked by uid 500); 1 Aug 2013 14:29:55 -0000 Delivered-To: apmail-openoffice-dev-archive@openoffice.apache.org Received: (qmail 71141 invoked by uid 500); 1 Aug 2013 14:29:53 -0000 Mailing-List: contact dev-help@openoffice.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: dev@openoffice.apache.org Delivered-To: mailing list dev@openoffice.apache.org Received: (qmail 70902 invoked by uid 99); 1 Aug 2013 14:29:52 -0000 Received: from minotaur.apache.org (HELO minotaur.apache.org) (140.211.11.9) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 01 Aug 2013 14:29:52 +0000 Received: from localhost (HELO [9.155.131.113]) (127.0.0.1) (smtp-auth username hdu, mechanism plain) by minotaur.apache.org (qpsmtpd/0.29) with ESMTP; Thu, 01 Aug 2013 14:29:52 +0000 Message-ID: <51FA70FF.1010406@apache.org> Date: Thu, 01 Aug 2013 16:30:23 +0200 From: Herbert Duerr User-Agent: generic MIME-Version: 1.0 To: dev@openoffice.apache.org Subject: Re: Export of PDF/A-1a faulty ? References: <51FA4453.409@googlemail.com> <51FA48B0.3070802@apache.org> <51FA6724.80602@googlemail.com> In-Reply-To: <51FA6724.80602@googlemail.com> Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit Hi Guenter, >> PDF/A is a document format for long term preservation so it has some >> constraints to facilitate this. See ISO 19005 for details or [1] >> (provided by the Library of Congress) for an overview over these >> constraints. Here is the relevant excerpt: >> >> - Encryption is disallowed >> - Audio and video content are forbidden >> - Javascript and executable file launches are prohibited >> - All fonts must be embedded and also must be legally embeddable for >> unlimited, universal rendering >> - Colorspaces specified in a device-independent manner >> - Use of standards-based metadata is mandated >> >> [1] http://www.digitalpreservation.gov/formats/fdd/fdd000125.shtml > > many thanks. Without knowing the details I had in mind, that "archived > pdf documents" were "revisionssicher". You probably want the signed PDFs and checking them ensures a PDF has not been tampered with. AOO doesn't yet support it [1], but there are third-party tools for signing the PDF or for encrypting the file itself. [1] https://issues.apache.org/ooo/show_bug.cgi?id=47895 > Are there tools, to produce readable "really protected" pdf documents? Depends what you mean. Signing with strong cryptography gives a good assurance that it hasn't been tampered with. Herbert --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscribe@openoffice.apache.org For additional commands, e-mail: dev-help@openoffice.apache.org