Package javax.crypto.spec

Examples of javax.crypto.spec.IvParameterSpec

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      {
         cipher = Cipher.getInstance(algorithm);
         int size = cipher.getBlockSize();
         byte[] tmp = new byte[size];
         Arrays.fill(tmp, (byte)15);
         IvParameterSpec iv = new IvParameterSpec(tmp);
         cipher.init(Cipher.DECRYPT_MODE, key, iv);
      }
      catch(Exception e)
      {
         e.printStackTrace();
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      {
         cipher = Cipher.getInstance(algorithm);
         int size = cipher.getBlockSize();
         byte[] tmp = new byte[size];
         Arrays.fill(tmp, (byte)15);
         IvParameterSpec iv = new IvParameterSpec(tmp);
         cipher.init(Cipher.ENCRYPT_MODE, key, iv);
      }
      catch(Exception e)
      {
         throw new IOException("Failed to init cipher: "+e.getMessage());
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     */
    private byte[] doFinal(int encryptMode, SecretKey generatedKey, String vector, byte[] message) {
        try {
            byte[] raw = Hex.decodeHex(vector.toCharArray());
            Cipher cipher = Cipher.getInstance(AES_CBC_ALGORITHM);
            cipher.init(encryptMode, generatedKey, new IvParameterSpec(raw));
            return cipher.doFinal(message);
        } catch (Exception e) {
            throw new IllegalStateException(e);
        }
    }
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    public static String encrypt(String plainText, String encryptionKey, String salt) {
        try {
            Cipher cipher = Cipher.getInstance("AES/CBC/ISO10126Padding", "SunJCE");
            SecretKeySpec key = new SecretKeySpec(encryptionKey.getBytes("UTF-8"), "AES");
            cipher.init(Cipher.ENCRYPT_MODE, key, new IvParameterSpec(salt.getBytes("UTF-8")));
            return Hex.encodeToString(cipher.doFinal(plainText.getBytes("UTF-8")));
        } catch (Exception e) {
            LOG.error("Could not encrypt value.", e);
        }
            return null;
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    public static String decrypt(String cipherText, String encryptionKey, String salt) {
        try {
            Cipher cipher = Cipher.getInstance("AES/CBC/ISO10126Padding", "SunJCE");
            SecretKeySpec key = new SecretKeySpec(encryptionKey.getBytes("UTF-8"), "AES");
            cipher.init(Cipher.DECRYPT_MODE, key, new IvParameterSpec(salt.getBytes("UTF-8")));
            return new String(cipher.doFinal(Hex.decode(cipherText)), "UTF-8");
        } catch (Exception e) {
            LOG.error("Could not decrypt value.", e);
        }
        return null;
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        key = BaseCipher.resize(key, bsize);
        iv = BaseCipher.resize(iv, ivsize);
        try {
            cipher = SecurityUtils.getCipher(transformation);
            cipher.init((mode == Mode.Encrypt ? javax.crypto.Cipher.ENCRYPT_MODE : javax.crypto.Cipher.DECRYPT_MODE),
                        new SecretKeySpec(key, algorithm), new IvParameterSpec(iv));
        } catch (GeneralSecurityException e) {
            cipher = null;
            throw new SSHRuntimeException(e);
        }
    }
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  public InputStream encrypt(InputStream in, Key key, byte[] iv)
      throws NoSuchAlgorithmException, NoSuchPaddingException,
      InvalidKeyException, InvalidAlgorithmParameterException, NoSuchProviderException
  {
    Cipher cipher = Cipher.getInstance(CIPHER_TRANSFORMATION);
    cipher.init(Cipher.ENCRYPT_MODE, key, new IvParameterSpec(iv));
   
    return new CipherInputStream(in, cipher);
  }
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  public InputStream decrypt(InputStream in, Key key, byte[] iv)
      throws NoSuchAlgorithmException, NoSuchPaddingException,
      InvalidKeyException, InvalidAlgorithmParameterException, NoSuchProviderException
  {
    Cipher cipher = Cipher.getInstance(CIPHER_TRANSFORMATION);
    cipher.init(Cipher.DECRYPT_MODE, key, new IvParameterSpec(iv));
   
    return new CipherInputStream(in, cipher);
  }
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    public void testSetIVIvParameterSpec()
            throws InvalidKeyException, InvalidAlgorithmParameterException {
        int i = 4;
        CryptByteBuffer crypt = new CryptByteBuffer(cipherTypes[i], keys[i], ivs[i]);
        crypt.genIV();
        crypt.setIV(new IvParameterSpec(ivs[i]));
        assertArrayEquals(ivs[i], crypt.getIV().getIV());
    }
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    }

    @Test
    public void testSetIVIvParameterSpecNullInput()
            throws InvalidKeyException, InvalidAlgorithmParameterException {
        IvParameterSpec nullInput = null;
        int i = 4;
        CryptByteBuffer crypt = new CryptByteBuffer(cipherTypes[i], keys[i], ivs[i]);
        try{
            crypt.setIV(nullInput);
            fail("Expected InvalidAlgorithmParameterException");
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