public void encrypt(File srcFile, String password, File trgtFile)
      throws FileNotFoundException, IOException {
    FileInputStream fis = null;
    FileWriter fw = null;
    BufferedInputStream bis = null;
    BufferedWriter bw = null;

    byte[] buffer = null;

    if (passwordEncoder.checkPassword(password)) {
      StandardPBEByteEncryptor cipher = new StandardPBEByteEncryptor();

      cipher.setAlgorithm(algorithm);
      cipher.setPassword(password);

      buffer = new byte[blockSize];

      LOGGER.debug("blockSize = {}", blockSize);

      try {
        fis = new FileInputStream(srcFile);
        bis = new BufferedInputStream(fis);

        fw = new FileWriter(trgtFile);
        bw = new BufferedWriter(fw);

        byte[] encrypted = null;
        int length = 0;
        long size = 0L;
        while ((length = bis.read(buffer)) >= 0) {
          if (length < blockSize) {
            byte[] tmp = new byte[length];
            System.arraycopy(buffer, 0, tmp, 0, length);
            encrypted = cipher.encrypt(tmp);
          } else {
            encrypted = cipher.encrypt(buffer);
          }
          String line;
          try {
            line = new String(base64.encode(encrypted), "US-ASCII");
          } catch (Exception e) {
            throw new RuntimeException(e);
          }
          bw.write(line);
          bw.newLine();
          size += length;
        }
        bw.flush();
        LOGGER.debug("processed bytes = {}", size);
      } finally {
        EgovResourceReleaser.close(fw, bw, fis, bis);
      }

    } else {
      LOGGER.error("password not matched!!!");
      throw new IllegalArgumentException("password not matched!!!");
    }
  }
  public BigDecimal encrypt(BigDecimal number, String password) {
    if (passwordEncoder.checkPassword(password)) {
      StandardPBEBigDecimalEncryptor cipher = new StandardPBEBigDecimalEncryptor();

      cipher.setAlgorithm(algorithm);
      cipher.setPassword(password);

      return cipher.encrypt(number);
    } else {
      LOGGER.error("password not matched!!!");
      throw new IllegalArgumentException("password not matched!!!");
    }
  }
  public byte[] encrypt(byte[] data, String password) {
    if (passwordEncoder.checkPassword(password)) {
      StandardPBEByteEncryptor cipher = new StandardPBEByteEncryptor();

      cipher.setAlgorithm(algorithm);
      cipher.setPassword(password);

      return cipher.encrypt(data);
    } else {
      LOGGER.error("password not matched!!!");
      throw new IllegalArgumentException("password not matched!!!");
    }
  }
  public void decrypt(File encryptedFile, String password, File trgtFile)
      throws FileNotFoundException, IOException {
    FileReader fr = null;
    FileOutputStream fos = null;
    BufferedReader br = null;
    BufferedOutputStream bos = null;

    if (passwordEncoder.checkPassword(password)) {
      StandardPBEByteEncryptor cipher = new StandardPBEByteEncryptor();

      cipher.setAlgorithm(algorithm);
      cipher.setPassword(password);

      try {
        fr = new FileReader(encryptedFile);
        br = new BufferedReader(fr);

        fos = new FileOutputStream(trgtFile);
        bos = new BufferedOutputStream(fos);

        byte[] encrypted = null;
        byte[] decrypted = null;
        String line = null;

        while ((line = br.readLine()) != null) {
          try {
            encrypted = base64.decode(line.getBytes("US-ASCII"));
          } catch (Exception e) {
            throw new RuntimeException(e);
          }

          decrypted = cipher.decrypt(encrypted);

          bos.write(decrypted);
        }
        bos.flush();
      } finally {
        EgovResourceReleaser.close(fos, bos, fr, br);
      }

    } else {
      LOGGER.error("password not matched!!!");
      throw new IllegalArgumentException("password not matched!!!");
    }
  }