ntg-context - mailing list for ConTeXt users
 help / color / mirror / Atom feed
From: Mojca Miklavec <mojca.miklavec.lists@gmail.com>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Re: PDF Digital Signatures
Date: Mon, 19 Mar 2012 22:08:55 +0100	[thread overview]
Message-ID: <CALBOmsZ_EJwtazugcdzpUW+pQ8L9z9Qs4njADXfiBOAbi1YCDA@mail.gmail.com> (raw)
In-Reply-To: <CAG5iGsCwbcPjKhzp0znGQH0DvP-ZdHXUdrNwFFuHTxtQ-SAwzA@mail.gmail.com>

On Mon, Mar 19, 2012 at 17:51, luigi scarso wrote:
>
>> I'm not sure about it, but I'm tempted to believe that digitally
>> signing PDFs might be one of "forbidden" functionality that requires
>> you to buy a licence for Acrobat.
> Why ? As  long it is  described in the ISO standard,  it can be
> implemented in mkiv (easily is another question).

As I said: I'm not sure whether or not it is legal to implement it or not.

There seem to be two separate issues:
(a) creating a document that others users will be able to fill in and sign
(b) signing your own document
Martin usually knows the legal issues better. I'm not sure about the
exact legal state and I'm not sure where to check it without getting
lost in "hundreds" of pages of EULA or other documents, but (b) is
described in PDF Reference Manual
(http://wwwimages.adobe.com/www.adobe.com/content/dam/Adobe/en/devnet/pdf/pdfs/PDF32000_2008.pdf)
in Chapter 12 and cannot be any more complicated to implement than all
other PDF features that Hans, Taco or Hartmut ever implemented.

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?

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
___________________________________________________________________________________

  reply	other threads:[~2012-03-19 21:08 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 [this message]
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
2012-03-20 22:37           ` Martin Schröder
2012-03-19 21:30   ` Hans Hagen
2012-03-19 18:53 ` Kip Warner

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=CALBOmsZ_EJwtazugcdzpUW+pQ8L9z9Qs4njADXfiBOAbi1YCDA@mail.gmail.com \
    --to=mojca.miklavec.lists@gmail.com \
    --cc=ntg-context@ntg.nl \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).