Tutorial :Password Protection of PDF Files


We have a requirement to protect PDF files using a password. Are there any Java-based, open source tools which will help us in this regard?


I would recommend using the iText java PDF library.

Inside iText, there is a class called PdfEncrypter which should let you password protect a PDF file.


You can easily make the Password protected pdf file in java......to do so you will require two addtional jar/lib bctsp-jdk16-1.46.jar and bcprov-jdk16-1.46.jar along with the itextpdf-5.2.1.jar.
Download all jars from here Download Jars

Also below is the snippet of the code

private static String USER_PASSWORD = "password";  private static String OWNER_PASSWORD = "naveen";  public static void main(String[] args) throws IOException {        Document document = new Document();        try        {             PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("E:\\HelloWorld.pdf"));           writer.setEncryption(USER_PASSWORD.getBytes(),OWNER_PASSWORD.getBytes(), PdfWriter.ALLOW_PRINTING,PdfWriter.ENCRYPTION_AES_128);           document.open();           document.add(new Paragraph("This is Password Protected PDF document."));           document.close();           writer.close();        } catch (DocumentException e)        {           e.printStackTrace();        } catch (FileNotFoundException e)        {           e.printStackTrace();        }  }  


you can do it with iText PDF for java:

some examples:



FOP library also allows encryption:


Note:If u also have question or solution just comment us below or mail us on toontricks1994@gmail.com
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