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* $Id: EncryptPdf.java 3373 2008-05-12 16:21:24Z xlv $
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* Copyright 2002 by Paulo Soares
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* (the "License"); you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at http://www.mozilla.org/MPL/
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the License.
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* The Original Code is 'iText, a free JAVA-PDF library'.
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* The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
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* the Initial Developer are Copyright (C) 1999-2006 by Bruno Lowagie.
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* All Rights Reserved.
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* Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
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* are Copyright (C) 2000-2006 by Paulo Soares. All Rights Reserved.
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* Contributor(s): all the names of the contributors are added in the source code
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* Alternatively, the contents of this file may be used under the terms of the
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* LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
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* provisions of LGPL are applicable instead of those above. If you wish to
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* allow use of your version of this file only under the terms of the LGPL
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* License and not to allow others to use your version of this file under
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* the MPL, indicate your decision by deleting the provisions above and
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* replace them with the notice and other provisions required by the LGPL.
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* If you do not delete the provisions above, a recipient may use your version
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* of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
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* This library is free software; you can redistribute it and/or modify it
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* under the terms of the MPL as stated above or under the terms of the GNU
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* Library General Public License as published by the Free Software Foundation;
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* either version 2 of the License, or any later version.
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* This library is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
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* If you didn't download this code from the following link, you should check if
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* you aren't using an obsolete version:
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* http://www.lowagie.com/iText/
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package com.lowagie.tools;
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import java.io.FileOutputStream;
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import java.util.HashMap;
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import com.lowagie.text.pdf.PdfEncryptor;
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import com.lowagie.text.pdf.PdfReader;
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import com.lowagie.text.pdf.PdfWriter;
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* Encrypts a PDF document. It needs iText (http://www.lowagie.com/iText).
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* @author Paulo Soares (psoares@consiste.pt)
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* @since 2.1.1 (renamed to follow Java naming conventions)
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public class EncryptPdf {
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private final static int INPUT_FILE = 0;
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private final static int OUTPUT_FILE = 1;
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private final static int USER_PASSWORD = 2;
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private final static int OWNER_PASSWORD = 3;
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private final static int PERMISSIONS = 4;
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private final static int STRENGTH = 5;
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private final static int MOREINFO = 6;
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private final static int permit[] = {
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PdfWriter.ALLOW_PRINTING,
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PdfWriter.ALLOW_MODIFY_CONTENTS,
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PdfWriter.ALLOW_MODIFY_ANNOTATIONS,
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PdfWriter.ALLOW_FILL_IN,
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PdfWriter.ALLOW_SCREENREADERS,
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PdfWriter.ALLOW_ASSEMBLY,
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PdfWriter.ALLOW_DEGRADED_PRINTING};
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private static void usage() {
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System.out.println("usage: input_file output_file user_password owner_password permissions 128|40 [new info string pairs]");
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System.out.println("permissions is 8 digit long 0 or 1. Each digit has a particular security function:");
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System.out.println("AllowPrinting");
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System.out.println("AllowModifyContents");
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System.out.println("AllowCopy");
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System.out.println("AllowModifyAnnotations");
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System.out.println("AllowFillIn (128 bit only)");
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System.out.println("AllowScreenReaders (128 bit only)");
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System.out.println("AllowAssembly (128 bit only)");
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System.out.println("AllowDegradedPrinting (128 bit only)");
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System.out.println("Example permissions to copy and print would be: 10100000");
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* Encrypts a PDF document.
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* @param args input_file output_file user_password owner_password permissions 128|40 [new info string pairs]
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public static void main (String args[]) {
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System.out.println("PDF document encryptor");
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if (args.length <= STRENGTH || args[PERMISSIONS].length() != 8) {
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String p = args[PERMISSIONS];
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for (int k = 0; k < p.length(); ++k) {
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permissions |= (p.charAt(k) == '0' ? 0 : permit[k]);
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System.out.println("Reading " + args[INPUT_FILE]);
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PdfReader reader = new PdfReader(args[INPUT_FILE]);
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System.out.println("Writing " + args[OUTPUT_FILE]);
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HashMap moreInfo = new HashMap();
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for (int k = MOREINFO; k < args.length - 1; k += 2)
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moreInfo.put(args[k], args[k + 1]);
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PdfEncryptor.encrypt(reader, new FileOutputStream(args[OUTPUT_FILE]),
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args[USER_PASSWORD].getBytes(), args[OWNER_PASSWORD].getBytes(), permissions, args[STRENGTH].equals("128"), moreInfo);
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System.out.println("Done.");
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catch (Exception e) {
b'\\ No newline at end of file'