From: Michael Hallgren <m.hallgren@free.fr>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Cc: Hans Hagen <pragma@wxs.nl>
Subject: Re: PDF Digital Signatures
Date: Tue, 20 Mar 2012 22:25:32 +0100 [thread overview]
Message-ID: <1332278732.24093.5.camel@home> (raw)
In-Reply-To: <CALBOmsbB62kjmPQ9jdccykrxABHBdvQ1NTuE918_XM4rPr7xQA@mail.gmail.com>
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Le mardi 20 mars 2012 à 20:23 +0100, Mojca Miklavec a écrit :
> 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.
>
> 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
>
> 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.
>
> 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.
>
>
> 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
> ...
>
> Mojca
> ___________________________________________________________________________________
> 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
> ___________________________________________________________________________________
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___________________________________________________________________________________
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
___________________________________________________________________________________
next prev parent reply other threads:[~2012-03-20 21:25 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-19 9:27 Andreas Schneider
2012-03-19 15:41 ` Mojca Miklavec
2012-03-19 16:28 ` Andreas Schneider
2012-03-19 16:51 ` luigi scarso
2012-03-19 21:08 ` Mojca Miklavec
2012-03-19 22:12 ` Hans Hagen
2012-03-20 19:23 ` Mojca Miklavec
2012-03-20 19:27 ` Hans Hagen
2012-03-20 21:25 ` Michael Hallgren [this message]
2012-03-20 22:37 ` Martin Schröder
2012-03-19 21:30 ` Hans Hagen
2012-03-19 18:53 ` Kip Warner
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