package gnu.testlet.gnu.crypto.mode;

// ----------------------------------------------------------------------------
// $Id: TestOfCFB.java,v 1.3 2005/10/06 04:24:20 rsdio Exp $
//
// Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc.
//
// This file is part of GNU Crypto.
//
// GNU Crypto is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2, or (at your option)
// any later version.
//
// GNU Crypto is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; see the file COPYING.  If not, write to the
//
//    Free Software Foundation Inc.,
//    51 Franklin Street, Fifth Floor,
//    Boston, MA 02110-1301
//    USA
//
// Linking this library statically or dynamically with other modules is
// making a combined work based on this library.  Thus, the terms and
// conditions of the GNU General Public License cover the whole
// combination.
//
// As a special exception, the copyright holders of this library give
// you permission to link this library with independent modules to
// produce an executable, regardless of the license terms of these
// independent modules, and to copy and distribute the resulting
// executable under terms of your choice, provided that you also meet,
// for each linked independent module, the terms and conditions of the
// license of that module.  An independent module is a module which is
// not derived from or based on this library.  If you modify this
// library, you may extend this exception to your version of the
// library, but you are not obligated to do so.  If you do not wish to
// do so, delete this exception statement from your version.
// ----------------------------------------------------------------------------

// Tags: GNU-CRYPTO

import gnu.crypto.Registry;
import gnu.crypto.mode.IMode;
import gnu.crypto.mode.ModeFactory;
import gnu.crypto.util.Util;
import gnu.testlet.TestHarness;
import gnu.testlet.Testlet;

import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;

/**
 * <p>Conformance tests of the CFB implementation.</p>
 *
 * <p>References:</p>
 * <ol>
 *    <li><a href="http://csrc.nist.gov/encryption/modes/Recommendation/Modes01.pdf">
 *    Recommendation for Block Cipher Modes of Operation Methods and Techniques</a>,
 *    Morris Dworkin.</li>
 * </ol>
 *
 * @version $Revision: 1.3 $
 */
public class TestOfCFB implements Testlet {

   // Constants and variables
   // -------------------------------------------------------------------------

   private byte[] key, iv, pt, ct,
       pt1,  pt2,  pt3,  pt4,  pt5,  pt6,  pt7,  pt8,  pt9,
      pt10, pt11, pt12, pt13, pt14, pt15, pt16, pt17, pt18,
       ct1,  ct2,  ct3,  ct4,  ct5,  ct6,  ct7,  ct8,  ct9,
      ct10, ct11, ct12, ct13, ct14, ct15, ct16, ct17, ct18;
   private IMode mode;
   private Map attributes = new HashMap();

   // Constructor(s)
   // -------------------------------------------------------------------------

   // default 0-arguments constructor

   // Class methods
   // -------------------------------------------------------------------------

   // Instance methods.
   // -------------------------------------------------------------------------

   public void test(TestHarness harness) {
      // CFB1 mode is omitted, since it is not supported in GNU Crypto.

      harness.checkPoint("TestOfCFB8.testAES128");
      /* F.3.7 CFB8-AES128-Encrypt and F.3.8 CFB8-AES-Decrypt. */
      key = Util.toBytesFromUnicode("\u2b7e\u1516\u28ae\ud2a6\uabf7\u1588\u09cf\u4f3c");
      iv = Util.toBytesFromUnicode("\u0001\u0203\u0405\u0607\u0809\u0a0b\u0c0d\u0e0f");

      pt1 = Util.toBytesFromString("6b");
      ct1 = Util.toBytesFromString("3b");

      pt2 = Util.toBytesFromString("c1");
      ct2 = Util.toBytesFromString("79");

      pt3 = Util.toBytesFromString("be");
      ct3 = Util.toBytesFromString("42");

      pt4 = Util.toBytesFromString("e2");
      ct4 = Util.toBytesFromString("4c");

      pt5 = Util.toBytesFromString("2e");
      ct5 = Util.toBytesFromString("9c");

      pt6 = Util.toBytesFromString("40");
      ct6 = Util.toBytesFromString("0d");

      pt7 = Util.toBytesFromString("9f");
      ct7 = Util.toBytesFromString("d4");

      pt8 = Util.toBytesFromString("96");
      ct8 = Util.toBytesFromString("36");

      pt9 = Util.toBytesFromString("e9");
      ct9 = Util.toBytesFromString("ba");

      pt10 = Util.toBytesFromString("3d");
      ct10 = Util.toBytesFromString("ce");

      pt11 = Util.toBytesFromString("7e");
      ct11 = Util.toBytesFromString("9e");

      pt12 = Util.toBytesFromString("11");
      ct12 = Util.toBytesFromString("0e");

      pt13 = Util.toBytesFromString("73");
      ct13 = Util.toBytesFromString("d4");

      pt14 = Util.toBytesFromString("93");
      ct14 = Util.toBytesFromString("58");

      pt15 = Util.toBytesFromString("17");
      ct15 = Util.toBytesFromString("6a");

      pt16 = Util.toBytesFromString("2a");
      ct16 = Util.toBytesFromString("4f");

      pt17 = Util.toBytesFromString("ae");
      ct17 = Util.toBytesFromString("32");

      pt18 = Util.toBytesFromString("2d");
      ct18 = Util.toBytesFromString("b9");

      pt = new byte[1];
      ct = new byte[1];
      mode = ModeFactory.getInstance(Registry.CFB_MODE, Registry.AES_CIPHER, 128/8);
      attributes.clear();
      attributes.put(IMode.MODE_BLOCK_SIZE, new Integer(1));
      attributes.put(IMode.IV, iv);
      attributes.put(IMode.KEY_MATERIAL, key);
      try {
         // encryption ........................................................
         attributes.put(IMode.STATE, new Integer(IMode.ENCRYPTION));
         mode.init(attributes);

         mode.update(pt1, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct1), "CFB8-AES128-Encrypt block #1");

         mode.update(pt2, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct2), "CFB8-AES128-Encrypt block #2");

         mode.update(pt3, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct3), "CFB8-AES128-Encrypt block #3");

         mode.update(pt4, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct4), "CFB8-AES128-Encrypt block #4");

         mode.update(pt5, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct5), "CFB8-AES128-Encrypt block #5");

         mode.update(pt6, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct6), "CFB8-AES128-Encrypt block #6");

         mode.update(pt7, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct7), "CFB8-AES128-Encrypt block #7");

         mode.update(pt8, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct8), "CFB8-AES128-Encrypt block #8");

         mode.update(pt9, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct9), "CFB8-AES128-Encrypt block #9");

         mode.update(pt10, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct10), "CFB8-AES128-Encrypt block #10");

         mode.update(pt11, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct11), "CFB8-AES128-Encrypt block #11");

         mode.update(pt12, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct12), "CFB8-AES128-Encrypt block #12");

         mode.update(pt13, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct13), "CFB8-AES128-Encrypt block #13");

         mode.update(pt14, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct14), "CFB8-AES128-Encrypt block #14");

         mode.update(pt15, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct15), "CFB8-AES128-Encrypt block #15");

         mode.update(pt16, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct16), "CFB8-AES128-Encrypt block #16");

         mode.update(pt17, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct17), "CFB8-AES128-Encrypt block #17");

         mode.update(pt18, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct18), "CFB8-AES128-Encrypt block #18");

         // decryption ........................................................
         mode.reset();
         attributes.put(IMode.STATE, new Integer(IMode.DECRYPTION));
         mode.init(attributes);

         mode.update(ct1, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt1), "CFB8-AES128-Decrypt block #1");

         mode.update(ct2, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt2), "CFB8-AES128-Decrypt block #2");

         mode.update(ct3, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt3), "CFB8-AES128-Decrypt block #3");

         mode.update(ct4, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt4), "CFB8-AES128-Decrypt block #4");

         mode.update(ct5, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt5), "CFB8-AES128-Decrypt block #5");

         mode.update(ct6, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt6), "CFB8-AES128-Decrypt block #6");

         mode.update(ct7, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt7), "CFB8-AES128-Decrypt block #7");

         mode.update(ct8, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt8), "CFB8-AES128-Decrypt block #8");

         mode.update(ct9, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt9), "CFB8-AES128-Decrypt block #9");

         mode.update(ct10, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt10), "CFB8-AES128-Decrypt block #10");

         mode.update(ct11, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt11), "CFB8-AES128-Decrypt block #11");

         mode.update(ct12, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt12), "CFB8-AES128-Decrypt block #12");

         mode.update(ct13, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt13), "CFB8-AES128-Decrypt block #13");

         mode.update(ct14, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt14), "CFB8-AES128-Decrypt block #14");

         mode.update(ct15, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt15), "CFB8-AES128-Decrypt block #15");

         mode.update(ct16, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt16), "CFB8-AES128-Decrypt block #16");

         mode.update(ct17, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt17), "CFB8-AES128-Decrypt block #17");

         mode.update(ct18, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt18), "CFB8-AES128-Decrypt block #18");

      } catch (Exception x) {
         harness.debug(x);
         harness.fail("TestOfCFB8.testAES128");
      }

      harness.checkPoint("TestOfCFB8.testAES192");
      /** F.3.9 CFB8-AES192-Encrypt and F.3.10 CFB8-AES192-Decrypt. */
      key = Util.toBytesFromUnicode("\u8e73\ub0f7\uda0e\u6452\uc810\uf32b\u8090\u79e5"+
            "\u62f8\uead2\u522c\u6b7b");
      iv = Util.toBytesFromUnicode("\u0001\u0203\u0405\u0607\u0809\u0a0b\u0c0d\u0e0f");

      pt1 = Util.toBytesFromString("6b");
      ct1 = Util.toBytesFromString("cd");

      pt2 = Util.toBytesFromString("c1");
      ct2 = Util.toBytesFromString("a2");

      pt3 = Util.toBytesFromString("be");
      ct3 = Util.toBytesFromString("52");

      pt4 = Util.toBytesFromString("e2");
      ct4 = Util.toBytesFromString("1e");

      pt5 = Util.toBytesFromString("2e");
      ct5 = Util.toBytesFromString("f0");

      pt6 = Util.toBytesFromString("40");
      ct6 = Util.toBytesFromString("a9");

      pt7 = Util.toBytesFromString("9f");
      ct7 = Util.toBytesFromString("05");

      pt8 = Util.toBytesFromString("96");
      ct8 = Util.toBytesFromString("ca");

      pt9 = Util.toBytesFromString("e9");
      ct9 = Util.toBytesFromString("44");

      pt10 = Util.toBytesFromString("3d");
      ct10 = Util.toBytesFromString("cd");

      pt11 = Util.toBytesFromString("7e");
      ct11 = Util.toBytesFromString("05");

      pt12 = Util.toBytesFromString("11");
      ct12 = Util.toBytesFromString("7c");

      pt13 = Util.toBytesFromString("73");
      ct13 = Util.toBytesFromString("bf");

      pt14 = Util.toBytesFromString("93");
      ct14 = Util.toBytesFromString("0d");

      pt15 = Util.toBytesFromString("17");
      ct15 = Util.toBytesFromString("47");

      pt16 = Util.toBytesFromString("2a");
      ct16 = Util.toBytesFromString("a0");

      pt17 = Util.toBytesFromString("ae");
      ct17 = Util.toBytesFromString("67");

      pt18 = Util.toBytesFromString("2d");
      ct18 = Util.toBytesFromString("8a");

      ct = new byte[1];
      pt = new byte[1];

      mode = ModeFactory.getInstance(Registry.CFB_MODE, Registry.AES_CIPHER, 128/8);
      attributes.clear();
      attributes.put(IMode.MODE_BLOCK_SIZE, new Integer(1));
      attributes.put(IMode.IV, iv);
      attributes.put(IMode.KEY_MATERIAL, key);
      try {
         // encryption ........................................................
         attributes.put(IMode.STATE, new Integer(IMode.ENCRYPTION));
         mode.init(attributes);

         mode.update(pt1, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct1), "CFB8-AES192-Encrypt block #1");

         mode.update(pt2, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct2), "CFB8-AES192-Encrypt block #2");

         mode.update(pt3, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct3), "CFB8-AES192-Encrypt block #3");

         mode.update(pt4, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct4), "CFB8-AES192-Encrypt block #4");

         mode.update(pt5, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct5), "CFB8-AES192-Encrypt block #5");

         mode.update(pt6, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct6), "CFB8-AES192-Encrypt block #6");

         mode.update(pt7, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct7), "CFB8-AES192-Encrypt block #7");

         mode.update(pt8, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct8), "CFB8-AES192-Encrypt block #8");

         mode.update(pt9, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct9), "CFB8-AES192-Encrypt block #9");

         mode.update(pt10, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct10), "CFB8-AES192-Encrypt block #10");

         mode.update(pt11, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct11), "CFB8-AES192-Encrypt block #11");

         mode.update(pt12, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct12), "CFB8-AES192-Encrypt block #12");

         mode.update(pt13, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct13), "CFB8-AES192-Encrypt block #13");

         mode.update(pt14, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct14), "CFB8-AES192-Encrypt block #14");

         mode.update(pt15, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct15), "CFB8-AES192-Encrypt block #15");

         mode.update(pt16, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct16), "CFB8-AES192-Encrypt block #16");

         mode.update(pt17, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct17), "CFB8-AES192-Encrypt block #17");

         mode.update(pt18, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct18), "CFB8-AES192-Encrypt block #18");

         // decryption ........................................................
         mode.reset();
         attributes.put(IMode.STATE, new Integer(IMode.DECRYPTION));
         mode.init(attributes);

         mode.update(ct1, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt1), "CFB8-AES192-Decrypt block #1");

         mode.update(ct2, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt2), "CFB8-AES192-Decrypt block #2");

         mode.update(ct3, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt3), "CFB8-AES192-Decrypt block #3");

         mode.update(ct4, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt4), "CFB8-AES192-Decrypt block #4");

         mode.update(ct5, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt5), "CFB8-AES192-Decrypt block #5");

         mode.update(ct6, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt6), "CFB8-AES192-Decrypt block #6");

         mode.update(ct7, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt7), "CFB8-AES192-Decrypt block #7");

         mode.update(ct8, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt8), "CFB8-AES192-Decrypt block #8");

         mode.update(ct9, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt9), "CFB8-AES192-Decrypt block #9");

         mode.update(ct10, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt10), "CFB8-AES192-Decrypt block #10");

         mode.update(ct11, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt11), "CFB8-AES192-Decrypt block #11");

         mode.update(ct12, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt12), "CFB8-AES192-Decrypt block #12");

         mode.update(ct13, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt13), "CFB8-AES192-Decrypt block #13");

         mode.update(ct14, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt14), "CFB8-AES192-Decrypt block #14");

         mode.update(ct15, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt15), "CFB8-AES192-Decrypt block #15");

         mode.update(ct16, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt16), "CFB8-AES192-Decrypt block #16");

         mode.update(ct17, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt17), "CFB8-AES192-Decrypt block #17");

         mode.update(ct18, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt18), "CFB8-AES192-Decrypt block #18");

      } catch (Exception x) {
         harness.debug(x);
         harness.fail("TestOfCFB8.testAES192");
      }

      harness.checkPoint("TestOfCFB8.testAES256");
      /** F.3.11 CFB8-AES256-Encrypt and F.3.12 CFB8-AES256-Decrypt. */
      key = Util.toBytesFromUnicode("\u603d\ueb10\u15ca\u71be\u2b73\uaef0\u857d\u7781"+
            "\u1f35\u2c07\u3b61\u08d7\u2d98\u10a3\u0914\udff4");
      iv = Util.toBytesFromUnicode("\u0001\u0203\u0405\u0607\u0809\u0a0b\u0c0d\u0e0f");

      pt1 = Util.toBytesFromString("6b");
      ct1 = Util.toBytesFromString("dc");

      pt2 = Util.toBytesFromString("c1");
      ct2 = Util.toBytesFromString("1f");

      pt3 = Util.toBytesFromString("be");
      ct3 = Util.toBytesFromString("1a");

      pt4 = Util.toBytesFromString("e2");
      ct4 = Util.toBytesFromString("85");

      pt5 = Util.toBytesFromString("2e");
      ct5 = Util.toBytesFromString("20");

      pt6 = Util.toBytesFromString("40");
      ct6 = Util.toBytesFromString("a6");

      pt7 = Util.toBytesFromString("9f");
      ct7 = Util.toBytesFromString("4d");

      pt8 = Util.toBytesFromString("96");
      ct8 = Util.toBytesFromString("b5");

      pt9 = Util.toBytesFromString("e9");
      ct9 = Util.toBytesFromString("5f");

      pt10 = Util.toBytesFromString("3d");
      ct10 = Util.toBytesFromString("cc");

      pt11 = Util.toBytesFromString("7e");
      ct11 = Util.toBytesFromString("8a");

      pt12 = Util.toBytesFromString("11");
      ct12 = Util.toBytesFromString("c5");

      pt13 = Util.toBytesFromString("73");
      ct13 = Util.toBytesFromString("54");

      pt14 = Util.toBytesFromString("93");
      ct14 = Util.toBytesFromString("84");

      pt15 = Util.toBytesFromString("17");
      ct15 = Util.toBytesFromString("4e");

      pt16 = Util.toBytesFromString("2a");
      ct16 = Util.toBytesFromString("88");

      pt17 = Util.toBytesFromString("ae");
      ct17 = Util.toBytesFromString("97");

      pt18 = Util.toBytesFromString("2d");
      ct18 = Util.toBytesFromString("00");

      ct = new byte[1];
      pt = new byte[1];

      mode = ModeFactory.getInstance(Registry.CFB_MODE, Registry.AES_CIPHER, 128/8);
      attributes.clear();
      attributes.put(IMode.MODE_BLOCK_SIZE, new Integer(1));
      attributes.put(IMode.IV, iv);
      attributes.put(IMode.KEY_MATERIAL, key);
      try {
         // encryption ........................................................
         attributes.put(IMode.STATE, new Integer(IMode.ENCRYPTION));
         mode.init(attributes);

         mode.update(pt1, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct1), "CFB8-AES256-Encrypt block #1");

         mode.update(pt2, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct2), "CFB8-AES256-Encrypt block #2");

         mode.update(pt3, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct3), "CFB8-AES256-Encrypt block #3");

         mode.update(pt4, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct4), "CFB8-AES256-Encrypt block #4");

         mode.update(pt5, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct5), "CFB8-AES256-Encrypt block #5");

         mode.update(pt6, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct6), "CFB8-AES256-Encrypt block #6");

         mode.update(pt7, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct7), "CFB8-AES256-Encrypt block #7");

         mode.update(pt8, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct8), "CFB8-AES256-Encrypt block #8");

         mode.update(pt9, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct9), "CFB8-AES256-Encrypt block #9");

         mode.update(pt10, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct10), "CFB8-AES256-Encrypt block #10");

         mode.update(pt11, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct11), "CFB8-AES256-Encrypt block #11");

         mode.update(pt12, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct12), "CFB8-AES256-Encrypt block #12");

         mode.update(pt13, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct13), "CFB8-AES256-Encrypt block #13");

         mode.update(pt14, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct14), "CFB8-AES256-Encrypt block #14");

         mode.update(pt15, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct15), "CFB8-AES256-Encrypt block #15");

         mode.update(pt16, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct16), "CFB8-AES256-Encrypt block #16");

         mode.update(pt17, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct17), "CFB8-AES256-Encrypt block #17");

         mode.update(pt18, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct18), "CFB8-AES256-Encrypt block #18");

         // decryption ........................................................
         mode.reset();
         attributes.put(IMode.STATE, new Integer(IMode.DECRYPTION));
         mode.init(attributes);

         mode.update(ct1, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt1), "CFB8-AES256-Decrypt block #1");

         mode.update(ct2, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt2), "CFB8-AES256-Decrypt block #2");

         mode.update(ct3, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt3), "CFB8-AES256-Decrypt block #3");

         mode.update(ct4, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt4), "CFB8-AES256-Decrypt block #4");

         mode.update(ct5, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt5), "CFB8-AES256-Decrypt block #5");

         mode.update(ct6, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt6), "CFB8-AES256-Decrypt block #6");

         mode.update(ct7, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt7), "CFB8-AES256-Decrypt block #7");

         mode.update(ct8, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt8), "CFB8-AES256-Decrypt block #8");

         mode.update(ct9, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt9), "CFB8-AES256-Decrypt block #9");

         mode.update(ct10, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt10), "CFB8-AES256-Decrypt block #10");

         mode.update(ct11, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt11), "CFB8-AES256-Decrypt block #11");

         mode.update(ct12, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt12), "CFB8-AES256-Decrypt block #12");

         mode.update(ct13, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt13), "CFB8-AES256-Decrypt block #13");

         mode.update(ct14, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt14), "CFB8-AES256-Decrypt block #14");

         mode.update(ct15, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt15), "CFB8-AES256-Decrypt block #15");

         mode.update(ct16, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt16), "CFB8-AES256-Decrypt block #16");

         mode.update(ct17, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt17), "CFB8-AES256-Decrypt block #17");

         mode.update(ct18, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt18), "CFB8-AES256-Decrypt block #18");

      } catch (Exception x) {
         harness.debug(x);
         harness.fail("TestOfCFB8.testAES256");
      }

      harness.checkPoint("TestOfCFB128.testAES128");
      /** F.3.13 CFB128-AES128-Encrypt and F.3.14 CFB128-AES128-Decrypt. */
      key = Util.toBytesFromString("2b7e151628aed2a6abf7158809cf4f3c");
      iv  = Util.toBytesFromString("000102030405060708090a0b0c0d0e0f");

      pt1 = Util.toBytesFromString("6bc1bee22e409f96e93d7e117393172a");
      ct1 = Util.toBytesFromString("3b3fd92eb72dad20333449f8e83cfb4a");

      pt2 = Util.toBytesFromString("ae2d8a571e03ac9c9eb76fac45af8e51");
      ct2 = Util.toBytesFromString("c8a64537a0b3a93fcde3cdad9f1ce58b");

      pt3 = Util.toBytesFromString("30c81c46a35ce411e5fbc1191a0a52ef");
      ct3 = Util.toBytesFromString("26751f67a3cbb140b1808cf187a4f4df");

      pt4 = Util.toBytesFromString("f69f2445df4f9b17ad2b417be66c3710");
      ct4 = Util.toBytesFromString("c04b05357c5d1c0eeac4c66f9ff7f2e6");

      pt = new byte[16];
      ct = new byte[16];

      mode = ModeFactory.getInstance(Registry.CFB_MODE, Registry.AES_CIPHER, 128/8);
      attributes.clear();
      attributes.put(IMode.MODE_BLOCK_SIZE, new Integer(16));
      attributes.put(IMode.IV, iv);
      attributes.put(IMode.KEY_MATERIAL, key);
      try {
         // encryption ......................................................
         attributes.put(IMode.STATE, new Integer(IMode.ENCRYPTION));
         mode.init(attributes);

         mode.update(pt1, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct1), "CFB128-AES128-Encrypt block #1");

         mode.update(pt2, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct2), "CFB128-AES128-Encrypt block #2");

         mode.update(pt3, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct3), "CFB128-AES128-Encrypt block #3");

         mode.update(pt4, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct4), "CFB128-AES128-Encrypt block #4");

         // decryption ......................................................
         mode.reset();
         attributes.put(IMode.STATE, new Integer(IMode.DECRYPTION));
         mode.init(attributes);

         mode.update(ct1, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt1), "CFB128-AES128-Decrypt block #1");

         mode.update(ct2, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt2), "CFB128-AES128-Decrypt block #2");

         mode.update(ct3, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt3), "CFB128-AES128-Decrypt block #3");

         mode.update(ct4, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt4), "CFB128-AES128-Decrypt block #4");

      } catch (Exception x) {
         harness.debug(x);
         harness.fail("TestOfCFB128.testAES128");
      }

      harness.checkPoint("TestOfCFB128.testAES192");
      /** F.3.15 CFB128-AES192-Encrypt and F.3.16 CFB128-AES192-Decrypt. */
      key = Util.toBytesFromString("8e73b0f7da0e6452c810f32b809079e562f8ead2522c6b7b");
      iv  = Util.toBytesFromString("000102030405060708090a0b0c0d0e0f");

      pt1 = Util.toBytesFromString("6bc1bee22e409f96e93d7e117393172a");
      ct1 = Util.toBytesFromString("cdc80d6fddf18cab34c25909c99a4174");

      pt2 = Util.toBytesFromString("ae2d8a571e03ac9c9eb76fac45af8e51");
      ct2 = Util.toBytesFromString("67ce7f7f81173621961a2b70171d3d7a");

      pt3 = Util.toBytesFromString("30c81c46a35ce411e5fbc1191a0a52ef");
      ct3 = Util.toBytesFromString("2e1e8a1dd59b88b1c8e60fed1efac4c9");

      pt4 = Util.toBytesFromString("f69f2445df4f9b17ad2b417be66c3710");
      ct4 = Util.toBytesFromString("c05f9f9ca9834fa042ae8fba584b09ff");

      pt = new byte[16];
      ct = new byte[16];

      mode = ModeFactory.getInstance(Registry.CFB_MODE, Registry.AES_CIPHER, 128/8);
      attributes.clear();
      attributes.put(IMode.MODE_BLOCK_SIZE, new Integer(16));
      attributes.put(IMode.IV, iv);
      attributes.put(IMode.KEY_MATERIAL, key);
      try {
         // encryption ......................................................
         attributes.put(IMode.STATE, new Integer(IMode.ENCRYPTION));
         mode.init(attributes);

         mode.update(pt1, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct1), "CFB128-AES192-Encrypt block #1");

         mode.update(pt2, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct2), "CFB128-AES192-Encrypt block #2");

         mode.update(pt3, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct3), "CFB128-AES192-Encrypt block #3");

         mode.update(pt4, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct4), "CFB128-AES192-Encrypt block #4");

         // decryption ......................................................
         mode.reset();
         attributes.put(IMode.STATE, new Integer(IMode.DECRYPTION));
         mode.init(attributes);

         mode.update(ct1, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt1), "CFB128-AES192-Decrypt block #1");

         mode.update(ct2, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt2), "CFB128-AES192-Decrypt block #2");

         mode.update(ct3, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt3), "CFB128-AES192-Decrypt block #3");

         mode.update(ct4, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt4), "CFB128-AES192-Decrypt block #4");

      } catch (Exception x) {
         harness.debug(x);
         harness.fail("TestOfCFB128.testAES192");
      }

      harness.checkPoint("TestOfCFB128.testAES256");
      /** F.3.17 CFB128-AES256-Encrypt and F.3.18 CFB128-AES256-Decrypt. */
      key = Util.toBytesFromString("603deb1015ca71be2b73aef0857d7781"
                                  +"1f352c073b6108d72d9810a30914dff4");
      iv  = Util.toBytesFromString("000102030405060708090a0b0c0d0e0f");

      pt1 = Util.toBytesFromString("6bc1bee22e409f96e93d7e117393172a");
      ct1 = Util.toBytesFromString("dc7e84bfda79164b7ecd8486985d3860");

      pt2 = Util.toBytesFromString("ae2d8a571e03ac9c9eb76fac45af8e51");
      ct2 = Util.toBytesFromString("39ffed143b28b1c832113c6331e5407b");

      pt3 = Util.toBytesFromString("30c81c46a35ce411e5fbc1191a0a52ef");
      ct3 = Util.toBytesFromString("df10132415e54b92a13ed0a8267ae2f9");

      pt4 = Util.toBytesFromString("f69f2445df4f9b17ad2b417be66c3710");
      ct4 = Util.toBytesFromString("75a385741ab9cef82031623d55b1e471");

      pt = new byte[16];
      ct = new byte[16];

      mode = ModeFactory.getInstance(Registry.CFB_MODE, Registry.AES_CIPHER, 128/8);
      attributes.clear();
      attributes.put(IMode.MODE_BLOCK_SIZE, new Integer(16));
      attributes.put(IMode.IV, iv);
      attributes.put(IMode.KEY_MATERIAL, key);
      try {
         // encryption ......................................................
         attributes.put(IMode.STATE, new Integer(IMode.ENCRYPTION));
         mode.init(attributes);

         mode.update(pt1, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct1), "CFB128-AES256-Encrypt block #1");

         mode.update(pt2, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct2), "CFB128-AES256-Encrypt block #2");

         mode.update(pt3, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct3), "CFB128-AES256-Encrypt block #3");

         mode.update(pt4, 0, ct, 0);
         harness.check(Arrays.equals(ct, ct4), "CFB128-AES256-Encrypt block #4");

         // decryption ......................................................
         mode.reset();
         attributes.put(IMode.STATE, new Integer(IMode.DECRYPTION));
         mode.init(attributes);

         mode.update(ct1, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt1), "CFB128-AES256-Decrypt block #1");

         mode.update(ct2, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt2), "CFB128-AES256-Decrypt block #2");

         mode.update(ct3, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt3), "CFB128-AES256-Decrypt block #3");

         mode.update(ct4, 0, pt, 0);
         harness.check(Arrays.equals(pt, pt4), "CFB128-AES256-Decrypt block #4");

      } catch (Exception x) {
         harness.debug(x);
         harness.fail("TestOfCFB128.testAES256");
      }
   }
}
