Debenu Quick PDF Library - PDF SDK Community Forum : Cannot open secured PDF http://www.quickpdf.org/forum/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Wed, 20 May 2026 19:57:51 +0000 Fri, 23 Feb 2018 11:42:33 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 11.01 360 www.quickpdf.org/forum/RSS_post_feed.asp?TID=3545 <![CDATA[Debenu Quick PDF Library - PDF SDK Community Forum]]> http://www.quickpdf.org/forum/forum_images/QPDF_Forum_Title.png http://www.quickpdf.org/forum/ <![CDATA[Cannot open secured PDF : please keep in mind:These pdf-documents...]]> http://www.quickpdf.org/forum/cannot-open-secured-pdf_topic3545_post14134.html#14134 Author: Ingo
Subject: 3545
Posted: 23 Feb 18 at 11:42AM

please keep in mind:
These pdf-documents are malformed not always according to the pdf-specs.
A 100 mb installation of an acrobat reader can fix this on the fly - a fast but slim line QuickPDF library not always ;-)

]]> Fri, 23 Feb 2018 11:42:33 +0000 http://www.quickpdf.org/forum/cannot-open-secured-pdf_topic3545_post14134.html#14134 <![CDATA[Cannot open secured PDF : Hi Ingo, Thanks for your e-mail. I...]]> http://www.quickpdf.org/forum/cannot-open-secured-pdf_topic3545_post14133.html#14133 Author: Soruk
Subject: 3545
Posted: 22 Feb 18 at 7:07AM

Hi Ingo,

Thanks foryour e-mail.

I justcontacted Debenu and I hope they will fix this issue soon.

Regards,

Soruk

]]> Thu, 22 Feb 2018 07:07:24 +0000 http://www.quickpdf.org/forum/cannot-open-secured-pdf_topic3545_post14133.html#14133 <![CDATA[Cannot open secured PDF : Hi,i&#039;ve got your mail...Foxit...]]> http://www.quickpdf.org/forum/cannot-open-secured-pdf_topic3545_post14132.html#14132 Author: Ingo
Subject: 3545
Posted: 21 Feb 18 at 10:40PM

Hi,


i've got your mail...
Foxit and Adobe products can open your pdf-files. Please keep in mind that their installations are many, many mb large ;-)
On the other side there's the slim line QuickPDF library...
You know what i wanna tell... ;-)

I've made the same experiences as you did already.
My apps are telling me that there is a main- AND a user-password. That's not true cause Foxit and the Adobe Reader are able to open the pdfs without asking for a password.

If i look inside the pdf-source using Notepad i see some strange objects and constructs...
Using online validators i've got the following two messages:
1. The document doesn't conform to the PDF reference (missing required entries, wrong value types, etc.).
2. Message: Error, cannot read PDF file: Unexpected escaped string.
The other online tools raise similar messages...

My advice:
Send the documents to the official support team.
Perhaps they are able to fix this problem to make QuickPDF showing these malformed pdf-documents.



]]> Wed, 21 Feb 2018 22:40:31 +0000 http://www.quickpdf.org/forum/cannot-open-secured-pdf_topic3545_post14132.html#14132 <![CDATA[Cannot open secured PDF : Hi Soruk,you can send the pdf...]]> http://www.quickpdf.org/forum/cannot-open-secured-pdf_topic3545_post14131.html#14131 Author: Ingo
Subject: 3545
Posted: 20 Feb 18 at 5:44PM

Hi Soruk,

you can send the pdf to webmaster *at* pdf-analyzer *dot* com
Please keep in mind that this is a forum mainly for users...
Not the official support page of the publishers.



]]> Tue, 20 Feb 2018 17:44:08 +0000 http://www.quickpdf.org/forum/cannot-open-secured-pdf_topic3545_post14131.html#14131 <![CDATA[Cannot open secured PDF : Hello Ingo,I&#039;am using the...]]> http://www.quickpdf.org/forum/cannot-open-secured-pdf_topic3545_post14130.html#14130 Author: Soruk
Subject: 3545
Posted: 20 Feb 18 at 12:46PM

Hello Ingo,

I'am using the official Debenu C# wrapper and its fails probably when marshaling the empty string to the C++ DLL.
This kind of PDFs does not work in the Demo application.
I can send you an example of the PDF in private massage or e-mail.

Regards,
Soruk


Edited by Soruk - 20 Feb 18 at 12:48PM]]> Tue, 20 Feb 2018 12:46:21 +0000 http://www.quickpdf.org/forum/cannot-open-secured-pdf_topic3545_post14130.html#14130 <![CDATA[Cannot open secured PDF : like i&#039;ve written...NOT a...]]> http://www.quickpdf.org/forum/cannot-open-secured-pdf_topic3545_post14122.html#14122 Author: Ingo
Subject: 3545
Posted: 10 Feb 18 at 12:28PM

like i've written...
NOT a string ;-)


]]> Sat, 10 Feb 2018 12:28:20 +0000 http://www.quickpdf.org/forum/cannot-open-secured-pdf_topic3545_post14122.html#14122 <![CDATA[Cannot open secured PDF : Hi Ingo,Thanks for your message.I...]]> http://www.quickpdf.org/forum/cannot-open-secured-pdf_topic3545_post14121.html#14121 Author: Soruk
Subject: 3545
Posted: 08 Feb 18 at 8:38PM

Hi Ingo,

Thanks for your message. 
I think, these are the second types PDF files. 
But how I can insert the password in the “LoadFromFile” funthion that I do not know (actually I set the empty string). 
Other PDF viewers do not ask for the password when opening file. 

Regards,
Soruk


Edited by Soruk - 08 Feb 18 at 8:53PM]]> Thu, 08 Feb 2018 20:38:51 +0000 http://www.quickpdf.org/forum/cannot-open-secured-pdf_topic3545_post14121.html#14121 <![CDATA[Cannot open secured PDF : Hi Soruk,there are two types of...]]> http://www.quickpdf.org/forum/cannot-open-secured-pdf_topic3545_post14120.html#14120 Author: Ingo
Subject: 3545
Posted: 08 Feb 18 at 6:37PM

Hi Soruk,

there are two types of passwords:
1. The user password (you have toinsert it while opening the pdf in a reader).
2. The -not very safe- main password to protect some settings inside the pdf.
I think you're talking about this main password.
Using the LoadFromFile you have to insert the password as unicode string. I think that this is your problem...
After the load you should check if there's an existing encryption (if there's a password then there's an encryption, too). If so you should call the decrypt-function.

Cheers and welcome here,
Ingo

]]> Thu, 08 Feb 2018 18:37:59 +0000 http://www.quickpdf.org/forum/cannot-open-secured-pdf_topic3545_post14120.html#14120 <![CDATA[Cannot open secured PDF : Hello,I have a several secured...]]> http://www.quickpdf.org/forum/cannot-open-secured-pdf_topic3545_post14119.html#14119 Author: Soruk
Subject: 3545
Posted: 08 Feb 18 at 3:04PM

Hello,

I have a several secured / protected PDF files, and I'm not able to open theses files using C# wrapper and the following methods:
  • DAOpenFileReadOnly
  • DAOpenFile
  • LoadFromFile

I do not know the password and therefore to these functions the password is set to "".
And I got the following code error: 404 - INVALID_PASSWORD_CODE_ERRORS.

I do not understand why Debenu PDF cannot open these files, although Google Chrome, Edge and other PDF Readers (PDF X-Change Viewer, Windows 10 Reader) do not have any problem with opening theses files.

Why your library cannot open these files (I'm using the letest version).

Regards
]]> Thu, 08 Feb 2018 15:04:19 +0000 http://www.quickpdf.org/forum/cannot-open-secured-pdf_topic3545_post14119.html#14119