content: /*****************************************************************
   *   Licensed to the Apache Software Foundation (ASF) under one
   *  or more contributor license agreements.  See the NOTICE file
   *  distributed with this work for additional information
   *  regarding copyright ownership.  The ASF licenses this file
   *  to you under the Apache License, Version 2.0 (the
   *  "License"); you may not use this file except in compliance
   *  with the License.  You may obtain a copy of the License at
   *
   *    https://www.apache.org/licenses/LICENSE-2.0
   *
   *  Unless required by applicable law or agreed to in writing,
   *  software distributed under the License is distributed on an
   *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   *  KIND, either express or implied.  See the License for the
   *  specific language governing permissions and limitations
   *  under the License.
   ****************************************************************/
  package org.apache.cayenne.crypto.transformer.bytes;
  
  import static org.junit.Assert.assertArrayEquals;
  import static org.junit.Assert.assertEquals;
  import static org.mockito.Mockito.mock;
  
  import java.io.UnsupportedEncodingException;
  import java.security.InvalidAlgorithmParameterException;
  import java.security.InvalidKeyException;
  import java.security.Key;
  import java.security.NoSuchAlgorithmException;
  import java.util.Arrays;
  
  import javax.crypto.BadPaddingException;
  import javax.crypto.Cipher;
  import javax.crypto.IllegalBlockSizeException;
  import javax.crypto.NoSuchPaddingException;
  import javax.crypto.spec.IvParameterSpec;
  import javax.crypto.spec.SecretKeySpec;
  
  import org.apache.cayenne.crypto.CayenneCryptoException;
  import org.apache.cayenne.crypto.unit.CryptoUnitUtils;
  import org.junit.Test;
  
  public class CbcEncryptorTest {
  
      @Test(expected = CayenneCryptoException.class)
      public void testConstructor() throws UnsupportedEncodingException, NoSuchAlgorithmException, NoSuchPaddingException {
  
          byte[] iv = { 1, 2, 3, 4, 5, 6 };
          Key key = mock(Key.class);
          Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding");
          assertEquals(8, cipher.getBlockSize());
  
          // must throw as IV sie and block size are different
          new CbcEncryptor(cipher, key, iv);
      }
  
      @Test
      public void testEncrypt_AES() throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException,
              InvalidAlgorithmParameterException, IllegalBlockSizeException, BadPaddingException {
  
          byte[] ivBytes = CryptoUnitUtils.hexToBytes("0591849d87c93414f4405d32f4d69220");
          byte[] keyBytes = CryptoUnitUtils.hexToBytes("a4cb499fa31a6a228e16b7e4741d4fa3");
          Key key = new SecretKeySpec(keyBytes, "AES");
  
          Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
          cipher.init(Cipher.ENCRYPT_MODE, key);
          assertEquals(16, cipher.getBlockSize());
  
          byte[] plain = { 21, 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1 };
  
          // copy ivBytes, as they are reset
          CbcEncryptor encryptor = new CbcEncryptor(cipher, key, ivBytes);
  
          byte[] encrypted = encryptor.encrypt(plain, 0, new byte[1]);
  
          assertEquals(16 * 3, encrypted.length);
          assertArrayEquals(ivBytes, Arrays.copyOfRange(encrypted, 0, 16));
  
          Cipher decCipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
          decCipher.init(Cipher.DECRYPT_MODE, key, new IvParameterSpec(ivBytes));
          byte[] newPlain = decCipher.doFinal(encrypted, 16, encrypted.length - 16);
          assertArrayEquals(plain, newPlain);
      }
  
  }
  