Java tutorial
/* * This example was written by Bruno Lowagie, author of the book * 'iText in Action' by Manning Publications (ISBN: 1932394796). * You can use this example as inspiration for your own applications. * The following license applies: * http://www.1t3xt.com/about/copyright/index.php?page=MIT */ package questions.encryption; import java.io.FileOutputStream; import java.io.IOException; import com.lowagie.text.Document; import com.lowagie.text.DocumentException; import com.lowagie.text.Paragraph; import com.lowagie.text.Rectangle; import com.lowagie.text.pdf.PdfAnnotation; import com.lowagie.text.pdf.PdfWriter; public class HelloWorldFullyEncrypted { public static final String RESULT = "results/questions/encryption/everything_encrypted.pdf"; public static void main(String[] args) { // step 1 Document document = new Document(); try { // step 2 PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(RESULT)); writer.setEncryption("hello".getBytes(), "world".getBytes(), 0, PdfWriter.ENCRYPTION_AES_128); writer.createXmpMetadata(); // step 3 document.open(); // step 4 document.add(new Paragraph("Hello World")); writer.addAnnotation(PdfAnnotation.createFileAttachment(writer, new Rectangle(100f, 650f, 150f, 700f), "This is some text", "some text".getBytes(), null, "some.txt")); } catch (DocumentException de) { System.err.println(de.getMessage()); } catch (IOException ioe) { System.err.println(ioe.getMessage()); } // step 5 document.close(); } }