I need help - I can help - How to digitally sign and password protect a pdf

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How to digitally sign and password protect a pdf

Printed From: Debenu Quick PDF Library - PDF SDK Community Forum
Category: For Users of the Library
Forum Name: I need help - I can help
Forum Description: Problems and solutions while programming with the Debenu Quick PDF Library and Debenu PDF Viewer SDK
URL: http://www.quickpdf.org/forum/forum_posts.asp?TID=3729
Printed Date: 26 Apr 24 at 4:46PM
Software Version: Web Wiz Forums 11.01 - http://www.webwizforums.com

Topic: How to digitally sign and password protect a pdf

Posted By: Bigun
Subject: How to digitally sign and password protect a pdf
Date Posted: 30 Jul 19 at 9:27AM

Hi all,

I've already posted a similar question in the forum.

http://www.quickpdf.org/forum/signing-a-password-protected-document_topic3728.html" rel="nofollow - http://www.quickpdf.org/forum/signing-a-password-protected-document_topic3728.html

I'd like to know if, with QuickPdf v11.13 or newer, is it possible to:

- Load a PDF

- Password protect it (permissions password)

- Digitally sign it and save in a new document.

So, the output PDF should be digitally signed and password protected to avoid modifications.

If it is possible, any guide or hint would be much welcome.

Thank you very much.

Replies:

Posted By: Ingo
Date Posted: 30 Jul 19 at 9:50AM

not in one process!

You can set a password in the first process and reload the file in a further process to sign it.

Passwords can be set directly into a pdf and within the sign process.

This will give you an idea:

https://www.debenu.com/docs/pdf_library_reference/SignFile.php

This will give you a sample:

https://www.debenu.com/kb/add-visual-digital-signature-to-a-pdf-programmatically/

-------------
Cheers,
Ingo

Posted By: Bigun
Date Posted: 04 Sep 19 at 10:18AM

Presently it can be done with QuickPdf's latest release, version 16.13.

Thank you for your help.