Removing document restrictions in PDF

anshuman82 · Post by **anshuman82** » Thu Feb 22 2007

Hi,

I have a PDF file which has following security document restrictions like
1.Changing the document
2.Document Assembly
Creation of Document Assembly

How can remove these document restrictions in PDF using PDFCreator Active X.

Regds
Anshuman

Joan · Post by **Joan** » Fri Feb 23 2007

Hello,

You can open the file in the PDF Creator using the owner password and set/unset document restrictions.

Hopet his helps.

anshuman82 · Post by **anshuman82** » Fri Feb 23 2007

Hi Joan,

Thanks for reply.
I am using the below code for making a pdf a password protected file unprotected and removing the document restrictions as well.But the code is not working and file is not getting unprotected.. Could you please suggest what is wrong with code and how we can achieve the functionality?

acPDFCreatorLib.Initialize();
acPDFCreatorLib.SetLicenseKey("", "");
// Open a PDF document from file
string NewfileName = "ABC.pdf";

System.IO.FileStream file1 = new System.IO.FileStream(NewfileName, FileMode.Open, FileAccess.ReadWrite,
FileShare.ReadWrite);
using (IacDocument document = new IacDocument(null))
{
document.Open(file1, "pqr");

//Trying to assign empty user and owner passwords and setting no restrictions
document.Encrypt128("", "", 0);

// save modified document to a new file
Random number = new Random();
System.IO.FileStream file2 = new System.IO.FileStream(@"File_mod" + number.Next().ToString() + ".pdf", FileMode.CreateNew, FileAccess.Write,FileShare.Read);
document.Save(file2, IacFileSaveOption.acFileSaveAll); // save modified document
}
// terminate library to free resources
acPDFCreatorLib.Terminate();

Post by **Jose** » Mon Mar 05 2007

Hello,

The remove or edit document security from a PDF document you will need to first open the document with the â€œownerâ€ password.

Hope this helps?

anshuman82 · Post by **anshuman82** » Mon Mar 05 2007

Hi Joan,

As I explained in the code previous posts

I am opening the PDF with owner Id like

document.Open(file1, "pqr");

and then I am trying to assign empty user and owner passwords and set no restrictions
document.Encrypt128("", "", 0);

Please let me know what is wrong here or what else needs to be done

Regards
Anshuman

anshuman82 · Post by **anshuman82** » Sat Jun 09 2007

Hi,

I have owner password of a PDF file and I am trying to make this file non password protected and remove document restrictions on it.

Please let me know what is wrong in the code explained in previous posts or please share a sample code which achieve the requirements as I explained above.

Thanks
Anshuman

Joan · Post by **Joan** » Tue Jun 12 2007

Hello,

Please find here a VB code that opens an Encrypted pdf file and remove restrictions and passwords.

Hope this helps.

Code: Select all

Private Sub Decrypt_Click()

On Error GoTo report_error
    
    With CreatorRef

        ' Open a pdf file and remove passwords
        .SetLicenseKey Licensee, ActivationCode
        .Open App.Path & "Encrypt128.pdf", "owner"
        .Encrypt "", "", -60
        .Save App.Path & "\EncryptNoPassword.pdf", 0


MsgBox "Done"
        
   End With
   Exit Sub
   
report_error:
   MsgBox Err.Description
   MsgBox Err.Source

End Sub