Thursday, August 4, 2011

iTextSharp: Disable PDF Printing

It took me ages to find out how to disable printing on a PDF file. You need to encrypt the file in order set copying and printing settings.  Here's how:

System.Text.UTF8Encoding encoding = new System.Text.UTF8Encoding();
writer.SetEncryption(null, encoding.GetBytes("12345678"), PdfWriter.ALLOW_COPY, PdfWriter.STRENGTH40BITS);

And this is how to enable printing if you still want the pdf to be encrypted. 

System.Text.UTF8Encoding encoding = new System.Text.UTF8Encoding();
writer.SetEncryption(null, encoding.GetBytes("12345678"), PdfWriter.ALLOW_COPY | PdfWriter.ALLOW_PRINTING, PdfWriter.STRENGTH40BITS);


Posted by kevo at 8:00 PM
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8 comments:

  1. ThiwankaSeptember 28, 2011 at 10:35 AM

    Thanks this saved lots of time...

    ReplyDelete
  2. kevoSeptember 30, 2011 at 3:44 PM

    Good to hear :)

    ReplyDelete
  3. AnonymousDecember 15, 2011 at 10:38 AM

    The code is useful to configure the printing mechanism. It's a useful tool.

    large printing

    ReplyDelete
  4. Xanae LewisJanuary 5, 2012 at 8:20 AM

    Thanks for sharing these wonderful and useful tips. I also experienced same problem and I wasn't able to resolve it, not until I read your blog.
    data protection

    ReplyDelete
  5. LouisJanuary 10, 2012 at 9:58 AM

    I'm glad you shared this procedure to us. I've been thinking about it in a while now. Very useful indeed.

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    ReplyDelete
  6. MarkRuppertsJanuary 17, 2012 at 3:29 AM

    I'm so grateful that you made this post about this common problem. The code really helps a lot.

    bristol printing

    ReplyDelete
  7. rainJanuary 25, 2012 at 10:35 AM

    This is useful for secure documents. You can prevent it from being printed without permission.

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    ReplyDelete
  8. mozatoMarch 27, 2012 at 3:45 AM

    Here is the code for VB.Net in pdf files exist

    Policy: No Print

    Params:

    filename =file to apply Encrypt

    strPass = password to apply


    Imports Microsoft.VisualBasic


    Imports System
    Imports System.Collections.Generic
    Imports System.Linq
    Imports System.Web
    Imports System.Web.UI

    Imports iTextSharp.text
    Imports iTextSharp.text.pdf
    Imports iTextSharp.text.api
    Imports System.IO


    Public Class encriptaPDF


    Public Sub EncriptaArchivo(ByVal filename As String, strPass As String)


    Dim FileNew As String

    Dim Encoding As New System.Text.UTF8Encoding()

    Dim reader As New PdfReader(filename)

    FileNew = Replace(filename, ".pdf", "excrypt.pdf")


    Dim stamper = New PdfStamper(reader, New FileStream(FileNew, FileMode.Create))

    stamper.SetEncryption(Nothing, Encoding.GetBytes(strPass), PdfWriter.AllowScreenReaders, PdfWriter.STRENGTH40BITS)

    stamper.Close()

    reader.Close()


    File.Delete(filename)

    File.Copy(FileNew, filename)

    File.Delete(FileNew)


    End Sub



    End Class

    ReplyDelete

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