I need help - I can help - Conversion from 7.26 to 8.15

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Conversion from 7.26 to 8.15

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=2264
Printed Date: 13 Aug 25 at 5:25PM
Software Version: Web Wiz Forums 11.01 - http://www.webwizforums.com

Topic: Conversion from 7.26 to 8.15

Posted By: Luke
Subject: Conversion from 7.26 to 8.15
Date Posted: 15 May 12 at 12:35AM

I am converting from 7.26 to 8.15 using Delphi 2007. My code is to allow open but only allow printing. So I had two constants defined:

OWNER_PASSWORD = 'test owner password';

USER_PASSWORD = '';

and the following code:

var

iPermissions: integer;

iResult: integer;

begin

iPermissions := FPDF.EncodePermissions( 1, // Yes - CanPrint

0, // No - CanCopy

0, // No - CanChange

0, // No - CanAddNotes

0, // No - CanFillFields

0, // No - CanCopyAccess

0, // No - CanAssemble

1 ); // Yes - CanPrintFull

iResult := FPDF.Encrypt( OWNER_PASSWORD, USER_PASSWORD, 2, iPermissions );

FPDF.SaveToFile( 'test.pdf' );

end;

That code works with 7.26. However under 8.15 I am unable to open the saved file with Acrobat Reader, even with the password. I checked the return codes of each function and no errors were reported. However, if I change the Encrypt function to use 256 AES Encryption, i.e.

FPDF.Encrypt( OWNER_PASSWORD, USER_PASSWORD, 3, iPermissions );

everything is fine. I can open the file without password and I am only able to print.

Luke

-------------
Luke M. Miller

ResCorSoft, Inc.

Replies:

Posted By: Wheeley
Date Posted: 15 May 12 at 3:03AM

It's looks like 8.16 beta 1 might have fixed it. Reviewing the change log it says that made a change to 128-bit AES encryption. I would try that version and see if your issue goes away.

Wheeley

Posted By: Luke
Date Posted: 15 May 12 at 3:33AM

Thanks. Working on code that will go into production later this week. Would rather not use beta code. Easier just to use 256-bit encryption. Everyone should have upgraded to Acrobat 9 anyway.

-------------
Luke M. Miller

ResCorSoft, Inc.