Subject: How to remove PDF password security?
Date: 2014-04-27 16:34:25
From: sybren.kuperus@docsquare.nl
Source: remove-pdf-password-security
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	I want to remove the existing PDF password protection and I tried the following code. I do have the current password...

	Somehow the id.Save fails raising the error code: "Hash not valid for use in specified state". 

	 

	It has something to do with setting the password on "string.Empty". If I remove these two lines, the save will succeed!

	Am I doing something wrong? Can the passwords be set to string.Empty? Or is there another way?

	 

	 

	[code lang='c#']              

	PdfImportedDocument id = null;

	id = new PdfImportedDocument(inputFilePath, password);

	// Remove password

	id.Security.OwnerPassword = string.Empty;

	id.Security.UserPassword = string.Empty;

	// Set print indicator to printable

	if (!id.Security.Permissions.HasFlag(ComponentPro.Pdf.Security.PdfDocumentPermissions.Print))

	{

	       id.Security.SetPermissions(ComponentPro.Pdf.Security.PdfDocumentPermissions.Print);

	}

	id.Save(outputFilePath);

	 [/code]

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