Debenu Quick PDF Library - PDF SDK Community Forum : Encryption PDF 1.5 http://www.quickpdf.org/forum/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Sat, 04 Apr 2026 19:56:57 +0000 Tue, 09 Jan 2007 17:07:56 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 11.01 360 www.quickpdf.org/forum/RSS_post_feed.asp?TID=593 <![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[Encryption PDF 1.5 : Hi!I think the problem is the...]]> http://www.quickpdf.org/forum/encryption-pdf-15_topic593_post2724.html#2724 Author: Ingo
Subject: 593
Posted: 09 Jan 07 at 5:07PM

Hi!

I think the problem is the new (1.6) encryption standard AES.
Before 1.6-specs the encryption standard RC4 was used. Actually QuickPDF can't work properly with AES-files. Are there some hints... some ideas? I don't want to read the whole 1200 pages ;-)

Best regards,
Ingo



Edited by Ingo - 10 Jan 07 at 1:53AM]]> Tue, 09 Jan 2007 17:07:56 +0000 http://www.quickpdf.org/forum/encryption-pdf-15_topic593_post2724.html#2724 <![CDATA[Encryption PDF 1.5 : Ingo, some months ago I have tested...]]> http://www.quickpdf.org/forum/encryption-pdf-15_topic593_post2687.html#2687 Author: marian_pascalau
Subject: 593
Posted: 02 Jan 07 at 5:44AM

Ingo, some months ago I have tested some PDF documents encrypted with Acrobat 7. The problem was that QuickPDF library does not properly read the Acrobat 7 (PDF spec 1.6) metadata fields used for encryption.

 
If this is your case someone must invest some time studying the documentation :-(
]]> Tue, 02 Jan 2007 05:44:22 +0000 http://www.quickpdf.org/forum/encryption-pdf-15_topic593_post2687.html#2687 <![CDATA[Encryption PDF 1.5 : Hello!I&#039;ve problems to decrypt...]]> http://www.quickpdf.org/forum/encryption-pdf-15_topic593_post2685.html#2685 Author: Ingo
Subject: 593
Posted: 02 Jan 07 at 4:53AM

Hello!

I've problems to decrypt pdf-docs encrypted with Acrobat 7/8.
QuickPDF shows me with older pdf-docs 40- or 128-bit-encryption ... working with the new (7/8) pdf-docs the library shows nothing readable.

Is here someone with a hint or idea for me?
Thanks in advance and ...

Best regards and a Happy 2007,
Ingo



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