Re: [NTG-context] ConTeXt tool for enabling comments in PDF ?
h h extern wrote: Vit Zyka wrote: So, to do that, pdfTeX should start to calc document diggest and there should be standard(?) process of signing this value. how is that one calculated, imagine that in the %! fields you fill in placeholders like hereshouldgosomemagiccode, then one can run a script over the pdf, calculate that magic, and replace the string; maybe this can be hooked into xpdflib Hans Yes, I agree, postprocessing is possible. But I did not find any digest computing alg in the range of C/C++ or Perl. Also do not known links to xpdflib. Vit Zyka ___ ntg-context mailing list ntg-context@ntg.nl http://www.ntg.nl/mailman/listinfo/ntg-context
Re: [NTG-context] ConTeXt tool for enabling comments in PDF ?
Hans Hagen wrote:
Vit Zyka wrote:
interesting is that the doc opens but the menu bar freezes -)
\starttext
\startcomment should work in older readers as well \stopcomment \input
bryson
\pdfcompresslevel=0
\immediate\pdfobj{ /Type /Sig /Filter /Identity /P 2 }
\edef\DocMDPobj{\the\pdflastobj\space 0 R }
\immediate\pdfobj{ /Type /Sig /Filter /Identity /P 2 } \edef\URRRobj
{\the\pdflastobj\space 0 R }
\pdfcatalog{/Perms /DocMDP \DocMDPobj /UR3 \URRRobj}
\stoptext
A have had a second look at the Document Permitions. AFAIK and if Adobe
does not have some bitter secret the situation is as follow:
1) if you want to permit additional document rights available in AR 6,7
(like commenting, saving, loading and sending form data) you need to
sign document. (pgs. 684-700)
2) to sign document you need a) privat/public key generator and b)
calculate document diggest (number; sum of integers from (nearly) all
doc dictionary keys and values; alg. p. 1037).
Bellow is the document skeleton for that. There should be:
1) filled the comment lines started by %! (diggest and signature values)
2) perhaps also %? (depends on %!)
3) perhaps the FormSig field is not needed ???
So, to do that, pdfTeX should start to calc document diggest and there
should be standard(?) process of signing this value.
Vitek Zyka
--
\pdfoptionpdfminorversion=6
\pdfcompresslevel=0
\def\defObj#1#2{%
\immediate\pdfobj{#2}%
\edef#1{\the\pdflastobj\space 0 R }%
}
%--- MDP
\defObj\objTransformParamsMDP{
/Type /TransformParams /P 3 /V /1.2
}
\defObj\objSigRefMDP{
/Type /SigRef /TransformMethod /DocMDP
/TransformParams \objTransformParamsMDP
%! /DigestMethod ? /MD5 | /SHA1
%!? /DigestValue ? ()
%!? /DigestLocation [? ?]
}
%--- UR
\defObj\objTransformParamsUR{
/Type /TransformParams
/Document [/FullSave]
/V /2.2
/Annots [/Create /Delete /Modify /Copy /Import /Export] % if UR3 also
/Online /SummaryView
/Form [/FillIn /Import /Export /SubmitStandalone /SpawnTemplate]
% /Signature [/Modify]
/P false
}
\defObj\objSigRefUR{
/Type /SigRef /TransformMethod /DocUR
/TransformParams \objTransformParamsUR
%! /DigestMethod ? /MD5 | /SHA1
%!? /DigestValue ? ()
%!? /DigestLocation [? ?]
}
%--- Sig
\defObj\objSig{
/Type /Sig
%! /Filter Adobe.PPKLite | Entrust.PPKEF | CICI.SignIt | VeriSign.PPKVS
%? /SubFilter adbe.x509.rsa_sha1 | adbe.pkcs7.detached | adbe.pkcs7.sha1
% /Cert [] | () % only if /SubFilter adbe.x509.rsa_sha1
% /Contents (?)
/Reference [
% \objSigRefMDP
\objSigRefUR
]
% /ByteRange [0 0] % should if used UR3 then can be ommited DiggestValue
/V 1
}
%--- Perms
\defObj\objPerms{
/DocMDP \objSig
/UR \objSig
% /UR3 \objSig
}
%--- Sign Form
\defObj\objFormSigField{
/FT /Sig
/T (SigFieldName)
/V \objSig
}
\defObj\objForm{
/Fields [\objFormSigField]
}
\pdfcatalog{/AcroForm \objForm /Perms \objPerms}
\starttext
\startcomment should work in older readers as well \stopcomment
\input bryson
\stoptext
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Re: [NTG-context] ConTeXt tool for enabling comments in PDF ?
Mark Smith wrote: Henning Hraban Ramm wrote: Am 05.01.2005 um 12:03 schrieb Mark Smith: The general opinion was that this is effectively an Acrobat-only feature. In fact, it seems that one needs Acrobat 6 or 7 Pro to enable commenting in this way and that (at least on Mac) the commmenting author needs Reader 7 to be able to participate. That said, it was The other way round: You need Acrobat 7 Pro to enable Reader Extensions for a document, afterwards you can comment PDFs with Reader 6 or 7 Same way round actually. 7 Pro enables the enabling of comments (a paraphrase of enables commenting) in a document. The commenting author is the one who writes the comments and needs (as I said) on Mac (I believe), Reader 7. We are saying the same thing. The meat of the thread was more about the how-to's and why-not's of enabling Reader Extensions w/o 7 Pro. as far as i know, the readers 6/7 have more options than advertised and these can be turned on by plug-ins and probably special document settings (hidden by the encryption); has to do with this ebook stuff Hans - Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com | www.pragma-pod.nl - ___ ntg-context mailing list ntg-context@ntg.nl http://www.ntg.nl/mailman/listinfo/ntg-context
Re: [NTG-context] ConTeXt tool for enabling comments in PDF ?
Henning Hraban Ramm wrote: Am 05.01.2005 um 12:03 schrieb Mark Smith: The general opinion was that this is effectively an Acrobat-only feature. In fact, it seems that one needs Acrobat 6 or 7 Pro to enable commenting in this way and that (at least on Mac) the commmenting author needs Reader 7 to be able to participate. That said, it was The other way round: You need Acrobat 7 Pro to enable Reader Extensions for a document, afterwards you can comment PDFs with Reader 6 or 7 can you make me a small document that has the reader extensions enabled? Hans - Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com | www.pragma-pod.nl - ___ ntg-context mailing list ntg-context@ntg.nl http://www.ntg.nl/mailman/listinfo/ntg-context
Re: [NTG-context] ConTeXt tool for enabling comments in PDF ?
can you make a file with no password? No. You wrote that this possibility is mentioned somewhere. Where? VZ ___ ntg-context mailing list ntg-context@ntg.nl http://www.ntg.nl/mailman/listinfo/ntg-context
Re: [NTG-context] ConTeXt tool for enabling comments in PDF ?
Vit Zyka wrote:
can you make a file with no password?
No. You wrote that this possibility is mentioned somewhere. Where?
in the pdf specs
\starttext
\startcomment should work in older readers as well \stopcomment \input bryson
\def\pdfnopwdstr{28bf4e5e4e758a4164004e56fffa01082e2e00b6d0683e802f0ca9fe6453697a}
\immediate\pdfobj
{ /Filter /Standard
/V 1
/R 2
/P -4
/O \pdfnopwdstr
/U \pdfnopwdstr }
\pdftrailer{/Encrypt \the\pdflastobj\space 0 R}
\stoptext
however, it does not work
Hans
-
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
| www.pragma-pod.nl
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Re: [NTG-context] ConTeXt tool for enabling comments in PDF ?
Am 06.01.2005 um 11:02 schrieb Hans Hagen: You need Acrobat 7 Pro to enable Reader Extensions for a document, afterwards you can comment PDFs with Reader 6 or 7 can you make me a small document that has the reader extensions enabled? I'd like to, but there's no german Acrobat 7 yet, and I won't buy an english one. Grüßlis vom Hraban! --- http://www.fiee.net/texnique/ http://contextgarden.net ___ ntg-context mailing list ntg-context@ntg.nl http://www.ntg.nl/mailman/listinfo/ntg-context
Re: [NTG-context] ConTeXt tool for enabling comments in PDF ?
No. You wrote that this possibility is mentioned somewhere. Where?
in the pdf specs
Hmmm. I can find only (p. 92 1.6spec):
The absence of this entry (/Encrypt) from the trailer dictionary
means that the document is not encrypted.
It seems to me now that rights without passwords relies with
/Perms in catalog (p.117, 699) and signatures (p.684).
Something like:
-
\pdfcompresslevel=0
\immediate\pdfobj
{ /Type /Sig
/Filter % something from Adobe.PPKLite Entrust.PPKEF CICI.SignIt
VeriSign.PPKVS
/Contents % signature
/ByteRange %?? UR3 in /Perms
/P -4
}
\edef\DocMDPobj{\the\pdflastobj\space 0 R }
\immediate\pdfobj
{ /Type /Sig
/Filter % something from Adobe.PPKLite Entrust.PPKEF CICI.SignIt
VeriSign.PPKVS
/Contents % signature
/ByteRange %?? UR3 in /Perms
/P -4
}
\edef\URRRobj{\the\pdflastobj\space 0 R }
\pdfcatalog{/Perms /DocMDP \DocMDPobj /UR3 \URRRobj }
Hallo
\end
--
Sorry for uncomplete code, but I have not studied the signatures yet.
And sorry for a bit out of ConTeXt topic. Hans, is it time to move to
the pdftex list?
Vit Zyka
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Re: [NTG-context] ConTeXt tool for enabling comments in PDF ?
Henning Hraban Ramm wrote: I'd like to, but there's no german Acrobat 7 yet, and I won't buy an english one. Interesting. I'm in Germany too and am currently having trouble getting an international English version of 7 Pro at the education price. A German one is on offer. ___ ntg-context mailing list ntg-context@ntg.nl http://www.ntg.nl/mailman/listinfo/ntg-context
Re: [NTG-context] ConTeXt tool for enabling comments in PDF ?
Vit Zyka wrote: And sorry for a bit out of ConTeXt topic. Hans, is it time to move to the pdftex list? no problem, that way users see that things are not always trivial; and ... the pdftex list nowadays is mostly a latex howto list Hans - Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com | www.pragma-pod.nl - ___ ntg-context mailing list ntg-context@ntg.nl http://www.ntg.nl/mailman/listinfo/ntg-context
Re: [NTG-context] ConTeXt tool for enabling comments in PDF ?
Vit Zyka wrote:
interesting is that the doc opens but the menu bar freezes -)
\starttext
\startcomment should work in older readers as well \stopcomment \input bryson
\pdfcompresslevel=0
\immediate\pdfobj{ /Type /Sig /Filter /Identity /P 2 }
\edef\DocMDPobj{\the\pdflastobj\space 0 R }
\immediate\pdfobj{ /Type /Sig /Filter /Identity /P 2 } \edef\URRRobj
{\the\pdflastobj\space 0 R }
\pdfcatalog{/Perms /DocMDP \DocMDPobj /UR3 \URRRobj}
\stoptext
-
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
| www.pragma-pod.nl
-
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Re: [NTG-context] ConTeXt tool for enabling comments in PDF ?
Steffen Wolfrum wrote: Hi, in the MacOSX-TeX-list (mainly on LaTeX) I just read a discussion on Comments in PDF (by AcrobatReader7). I was involved in that discussion. Do we have a ConTeXt tool which can enable users of e.g. AdobeReader 7 to add comments to PDF files ? Or is it true that this comments enabled flag can only be set for PDFs generated by Acrobat -- and only by the original author? Quick summary of the thread: The general opinion was that this is effectively an Acrobat-only feature. In fact, it seems that one needs Acrobat 6 or 7 Pro to enable commenting in this way and that (at least on Mac) the commmenting author needs Reader 7 to be able to participate. That said, it was suggested that (though ill-advisable) the Acrobat security model could probably be readily breached in this respect by third party tools. I wonder if either (or both) of these: http://shop.pdf-office.com/product_info.php?products_id=34osCsid=a1241e335670fc0b939a8c03b77536f2 http://shop.pdf-office.com/product_info.php?products_id=47osCsid=a1241e335670fc0b939a8c03b77536f2 allow it ? Setting comments is not AFAICS mentioned in the blurb, but similar tricks are. OTOH an academic license for 7 Pro is not *that* much more expensive. mark. ___ ntg-context mailing list ntg-context@ntg.nl http://www.ntg.nl/mailman/listinfo/ntg-context
Re: [NTG-context] ConTeXt tool for enabling comments in PDF ?
I wrote: (regarding enabling comments in PDFs) I wonder if either (or both) of these: http://shop.pdf-office.com/product_info.php?products_id=34osCsid= a1241e335670fc0b939a8c03b77536f2 http://shop.pdf-office.com/product_info.php?products_id=47osCsid= a1241e335670fc0b939a8c03b77536f2 allow it ? well, I took the plunge and applied for demos of both. It looks like neither does the trick. mark. ___ ntg-context mailing list ntg-context@ntg.nl http://www.ntg.nl/mailman/listinfo/ntg-context
Re: [NTG-context] ConTeXt tool for enabling comments in PDF ?
Steffen Wolfrum wrote: Hi, in the MacOSX-TeX-list (mainly on LaTeX) I just read a discussion on Comments in PDF (by AcrobatReader7). Do we have a ConTeXt tool which can enable users of e.g. AdobeReader 7 to add comments to PDF files ? Or is it true that this comments enabled flag can only be set for PDFs generated by Acrobat -- and only by the original author? you can read comments in the reader, but not add them; but you can use tex to add them and the reader will recognize them \setupinteraction[state=start] \starttext \startcomment should work in older readers as well \stopcomment \input bryson \stoptext - Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com | www.pragma-pod.nl - ___ ntg-context mailing list ntg-context@ntg.nl http://www.ntg.nl/mailman/listinfo/ntg-context
Re: [NTG-context] ConTeXt tool for enabling comments in PDF ?
Do we have a ConTeXt tool which can enable users of e.g. AdobeReader 7 to add
comments to PDF files ?
Or is it true that this comments enabled flag can only be set for PDFs
generated by Acrobat -- and only by the original author?
I have played with this yesterday evening, but without success. I tried
\pdfcompresslevel=0
\pdftrailer{/Encrypt /Filter /Standard /V 1 /R 2 /P 252 }
Hallo
\end
AFAIK /P 252 allows everything (in revision 2). But you need password
key sequences /O and /U generation in the /Encrypt dictionary. Even if I
added them by pdfcrypt utility there was no possibility to comment PDF.
No idea for now.
Vit Zyka
Steffen
Henning Hraban Ramm [EMAIL PROTECTED] wrote:
There's a lot of new or enhanced features for us prepress people, e.g.
for Reader Extensions you don't need this expensive server product any
more, that means, if you own Acrobat 7 Professional you can enable the
correction tools in Reader for your document.
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--
Vít Zýka --- http://typokvitek.com
Automatic document typesetting
Automaticka sazba dokumentu --
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Re: [NTG-context] ConTeXt tool for enabling comments in PDF ?
Vit Zyka wrote:
Do we have a ConTeXt tool which can enable users of e.g. AdobeReader 7
to add comments to PDF files ?
Or is it true that this comments enabled flag can only be set for
PDFs generated by Acrobat -- and only by the original author?
I have played with this yesterday evening, but without success. I tried
\pdfcompresslevel=0
\pdftrailer{/Encrypt /Filter /Standard /V 1 /R 2 /P 252 }
Hallo
\end
technically it's possible to have no password (at least the specs say so) but i
can't get it working;
do you have a file without password that is editable made by another app?
Hans
-
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
| www.pragma-pod.nl
-
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Re: [NTG-context] ConTeXt tool for enabling comments in PDF ?
I have played with this yesterday evening, but without success. I tried
\pdfcompresslevel=0
\pdftrailer{/Encrypt /Filter /Standard /V 1 /R 2 /P 252 }
Hallo
\end
technically it's possible to have no password (at least the specs say
so) but i can't get it working;
do you have a file without password that is editable made by another app?
Unfortunately not. Using pdfcrypt I created encrypted but not editable
PDF, see http://typokvitek.com/tmp/pdfpermit3.pdf
open password 'A', user password 'B'.
Vit Zyka
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Re: [NTG-context] ConTeXt tool for enabling comments in PDF ?
Vit Zyka wrote:
I have played with this yesterday evening, but without success. I tried
\pdfcompresslevel=0
\pdftrailer{/Encrypt /Filter /Standard /V 1 /R 2 /P 252 }
Hallo
\end
technically it's possible to have no password (at least the specs say
so) but i can't get it working;
do you have a file without password that is editable made by another app?
Unfortunately not. Using pdfcrypt I created encrypted but not editable
PDF, see http://typokvitek.com/tmp/pdfpermit3.pdf
open password 'A', user password 'B'.
it looks like something needs to be done with the stream as well; simply setting
a password fails (even the empty one, the funny hex stream); btw, your 252
should be a negative number)
so ... we need more info
Hans
-
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
| www.pragma-pod.nl
-
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Re: [NTG-context] ConTeXt tool for enabling comments in PDF ?
Henning Hraban Ramm wrote: Am 05.01.2005 um 12:03 schrieb Mark Smith: The general opinion was that this is effectively an Acrobat-only feature. In fact, it seems that one needs Acrobat 6 or 7 Pro to enable commenting in this way and that (at least on Mac) the commmenting author needs Reader 7 to be able to participate. That said, it was The other way round: You need Acrobat 7 Pro to enable Reader Extensions for a document, afterwards you can comment PDFs with Reader 6 or 7 Same way round actually. 7 Pro enables the enabling of comments (a paraphrase of enables commenting) in a document. The commenting author is the one who writes the comments and needs (as I said) on Mac (I believe), Reader 7. We are saying the same thing. The meat of the thread was more about the how-to's and why-not's of enabling Reader Extensions w/o 7 Pro. ___ ntg-context mailing list ntg-context@ntg.nl http://www.ntg.nl/mailman/listinfo/ntg-context
