 | Mailing List | | Home | | Forum Home | | JBoss - Java Application Server | | Tomcat - JSP/Servlet container | | Struts - A MVC web framework | | iText - An open source PDF Java Library | | JDOM - JDOM XML Parser | | JSP - A mailing list about Java Server Pages specification and reference | | J2EE - A mailing list for Java(tm) 2 Platform, Enterprise Edition | | J2EE Pattern - An interest list for Sun Java Center J2EE Pattern Catalog | | Servlet - A mailing list for discussion about Sun Microsystem's Java Servlet API Technology | |
Struts & Hibernate
|
|
|
| | | -none- | -none- 2007-09-17 - By Paulo Soares
Back
It can't be done. Currently iText lacks the permission granularity
needed to control it.
Paulo
> -- --Original Message-- --
> From: itext-questions-bounces@(protected)
> [mailto:itext-questions-bounces@(protected)] On
> Behalf Of Seung Hyun Park
> Sent: Saturday, September 15, 2007 11:53 PM
> To: itext-questions@(protected)
> Subject: [iText-questions] How to sign the PDF file that has
> the signingpermission without setting owner password
>
> Hello.
>
>
>
> I have a question about the signing of PDF with iText.
>
>
>
> I know that PDF encryption spec. provides the permission to
> allow signing and adding annotations.
>
>
>
> I can sign a PDF file using Acrobat without typing owner
> password if it has the permission to allow signing.
>
>
>
>
>
> But, iText always needed owner password to sign on the PDF
> files, although they already had the signing permission, when
> I made some test codes and tried them.
>
>
>
> To be specific, PDFReader can read the PDF files encrypted
> without setting owner password but error occurs at
> PdfStamper.CreateSignature method.
>
>
>
> If I set owner password at the constructor of PDF reader, the
> error disappears.
>
>
>
> But, I have to insert signature without owner password at my
> scenario.
>
>
>
>
>
> My test codes are based on the article - "How to sign a PDF
> using iText and iTextSharp" and work well with unencrypted PDF files.
>
>
>
>
>
>
> How do I sign on the PDF files that they are encrypted but
> have signing permission?
>
>
>
> Strictly speaking, I want to know that it is possible to sign
> them with iText.
>
>
>
>
>
> I attach the sample PDF file that I have used for testing.
>
>
>
>
>
>
> If you could take a few minutes to answer my questions, I
> would really appreciate it.
>
> Always thank you in advance for your help.
>
>
> Best regards,
>
> S. H. Park
>
>
Aviso Legal:
Esta mensagem ? destinada exclusivamente ao destinat?rio. Pode conter informa?
?o confidencial ou legalmente protegida. A incorrecta transmiss?o desta mensagem
n?o significa a perca de confidencialidade. Se esta mensagem for recebida por
engano, por favor envie-a de volta para o remetente e apague-a do seu sistema
de imediato. ? proibido a qualquer pessoa que n?o o destinat?rio de usar,
revelar ou distribuir qualquer parte desta mensagem.
Disclaimer:
This message is destined exclusively to the intended receiver. It may contain
confidential or legally protected information. The incorrect transmission of
this message does not mean the loss of its confidentiality. If this message is
received by mistake, please send it back to the sender and delete it from your
system immediately. It is forbidden to any person who is not the intended
receiver to use, distribute or copy any part of this message.
-- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- -----
This SF.net email is sponsored by: Microsoft
Defy all challenges. Microsoft(R) Visual Studio 2005.
http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
__ ____ ____ ____ ____ ____ ____ ____ ____ ____
iText-questions mailing list
iText-questions@(protected)
https://lists.sourceforge.net/lists/listinfo/itext-questions
Buy the iText book: http://itext.ugent.be/itext-in-action/
|
|
|
