From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.comp.tex.context/75255 Path: news.gmane.org!not-for-mail From: Michael Hallgren Newsgroups: gmane.comp.tex.context Subject: Re: PDF Digital Signatures Date: Tue, 20 Mar 2012 22:25:32 +0100 Message-ID: <1332278732.24093.5.camel@home> References: <1346160652.20120319102714@gmx.de> <4F67AF4D.9030709@wxs.nl> Reply-To: mh@xalto.net, mailing list for ConTeXt users NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0549359961==" X-Trace: dough.gmane.org 1332278733 3345 80.91.229.3 (20 Mar 2012 21:25:33 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Tue, 20 Mar 2012 21:25:33 +0000 (UTC) Cc: Hans Hagen To: mailing list for ConTeXt users Original-X-From: ntg-context-bounces@ntg.nl Tue Mar 20 22:25:32 2012 Return-path: Envelope-to: gctc-ntg-context-518@m.gmane.org Original-Received: from balder.ntg.nl ([195.12.62.10]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1SA6Ye-0005C5-Iu for gctc-ntg-context-518@m.gmane.org; Tue, 20 Mar 2012 22:25:32 +0100 Original-Received: from localhost (localhost [127.0.0.1]) by balder.ntg.nl (Postfix) with ESMTP id 5C8CE10194; Tue, 20 Mar 2012 22:25:32 +0100 (CET) X-Virus-Scanned: Debian amavisd-new at balder.ntg.nl Original-Received: from balder.ntg.nl ([127.0.0.1]) by localhost (localhost [127.0.0.1]) (amavisd-new, port 10024) with LMTP id tF2Rc247LCtJ; Tue, 20 Mar 2012 22:25:31 +0100 (CET) Original-Received: from [127.0.0.1] (localhost [127.0.0.1]) by balder.ntg.nl (Postfix) with ESMTP id 89889101E6; Tue, 20 Mar 2012 22:25:30 +0100 (CET) Original-Received: from localhost (localhost [127.0.0.1]) by balder.ntg.nl (Postfix) with ESMTP id 9A199101E6 for ; Tue, 20 Mar 2012 22:25:29 +0100 (CET) X-Virus-Scanned: Debian amavisd-new at balder.ntg.nl Original-Received: from balder.ntg.nl ([127.0.0.1]) by localhost (localhost [127.0.0.1]) (amavisd-new, port 10024) with LMTP id dGcEYgxLB-mw for ; Tue, 20 Mar 2012 22:25:28 +0100 (CET) Original-Received: from filter3-til.mf.surf.net (filter3-til.mf.surf.net [194.171.167.219]) by balder.ntg.nl (Postfix) with ESMTP id 6B3A510194 for ; Tue, 20 Mar 2012 22:25:28 +0100 (CET) Original-Received: from smtp1-g21.free.fr (smtp1-g21.free.fr [IPv6:2a01:e0c:1:1599::10]) by filter3-til.mf.surf.net (8.14.3/8.14.3/Debian-9.4) with ESMTP id q2KLPQ5h002335 for ; Tue, 20 Mar 2012 22:25:27 +0100 Original-Received: from [IPv6:2a01:e35:2e49:1280:21f:3bff:fe1d:c945] (unknown [IPv6:2a01:e35:2e49:1280:21f:3bff:fe1d:c945]) by smtp1-g21.free.fr (Postfix) with ESMTP id 866A294000A; Tue, 20 Mar 2012 22:25:21 +0100 (CET) In-Reply-To: X-Mailer: Evolution 2.30.3 X-Bayes-Prob: 0.0001 (Score 0, tokens from: @@RPTN) X-CanIt-Geo: ip=2a01:e0c:1:1599::10; country=FR X-CanItPRO-Stream: uu:ntg-context@ntg.nl (inherits from uu:default, base:default) X-Canit-Stats-ID: 0UGLVpqC0 - c87f4c2befc0 - 20120320 (trained as not-spam) X-Scanned-By: CanIt (www . roaringpenguin . com) X-BeenThere: ntg-context@ntg.nl X-Mailman-Version: 2.1.12 Precedence: list List-Id: mailing list for ConTeXt users List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: ntg-context-bounces@ntg.nl Errors-To: ntg-context-bounces@ntg.nl Xref: news.gmane.org gmane.comp.tex.context:75255 Archived-At: --===============0549359961== Content-Type: multipart/signed; micalg="pgp-sha1"; protocol="application/pgp-signature"; boundary="=-jEfrm4ZDE9R/etbyphc+" --=-jEfrm4ZDE9R/etbyphc+ Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Le mardi 20 mars 2012 =C3=A0 20:23 +0100, Mojca Miklavec a =C3=A9crit : > On Mon, Mar 19, 2012 at 23:12, Hans Hagen wrote: > > On 19-3-2012 22:08, Mojca Miklavec wrote: > >> > >> Out of curiosity: is inability to create password-protected PDF files > >> with pdfTeX/LuaTeX due to legal issues or due to nobody caring enough > >> to implement it? > > > > it's not worth the trouble. Afaik it's a second pass issue and would > > complicate the code much. > > > > Just use qpdf to do it ... pretty fast. >=20 > If qpdf exists it is probably not a legal issue to do password protection= then. You mean strong encryption? Some countries, regimes I should rather say, are not in favour of such... Sad fact, IMHO. Signing a document digitally, should never be much of an issue, in your mentioned legal context, though. Well, needs to be honoured by the receiving party... but... hey, make regimes modern ! :) Cheers, mh >=20 > But from the same perspective ... one first needs PDF to be (almost) > finished before being able to sign it. One needs to read as-good-as > the whole PDF, read the certificate from somewhere on the disk and > then sign with that certificate. If certificate is password-protected, > one also needs to provide the password somehow. >=20 > The usecase would be sending documents to officials (proving that the > document really comes from the person claiming the ownership). But it > is also true that in principle one can sign emails with PDF > attachments. It is not the same, but it comes close. Another usecase > could be, say, sending invoices to clients. >=20 >=20 > We have a company that sells crappy software for signing PDFs and XML > for over 1000 EUR per version per browser per OS (each new version for > each supported browser on a single OS costs that much; and they have a > lot of clients). And of course it never works since of course it only > supports Mac OS X 10.6 (10.7 still doesn't work), on Windows only IE 7 > or Firefox 3.6 (latest Firefox won't work and it is awfully difficult > to find the old versions), on Linux probably a similar story (never > tried). And that is the only possible way to send any document to the > government. On the other hand they could just as well have used some > standard tool and it would work out of the box. So much about signing > ... >=20 > Mojca > _________________________________________________________________________= __________ > If your question is of interest to others as well, please add an entry to= the Wiki! >=20 > maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-co= ntext > webpage : http://www.pragma-ade.nl / http://tex.aanhet.net > archive : http://foundry.supelec.fr/projects/contextrev/ > wiki : http://contextgarden.net > _________________________________________________________________________= __________ --=-jEfrm4ZDE9R/etbyphc+ Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) iEYEABECAAYFAk9o9cUACgkQZNZ/rrgsqaejlACfYPjrlNOFJ4wJlh8uIzfRH7SL fUcAoIGQBuxtUzDjgqtsM9qS4aNl+Gw4 =5ETN -----END PGP SIGNATURE----- --=-jEfrm4ZDE9R/etbyphc+-- --===============0549359961== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________ --===============0549359961==--