public static void decrypt(InputStream is, OutputStream os)
throws IOException, NoSuchPaddingException, NoSuchAlgorithmException, ClassNotFoundException,
InvalidAlgorithmParameterException, InvalidKeyException {
SecretKey key = Deserializer.deserializeObject();
// get Cipher instance and initiate in decrypt mode
Cipher decryptCipher = Cipher.getInstance("AES");
decryptCipher.init(Cipher.DECRYPT_MODE, key);
// create CipherOutputStream to decrypt the data using decryptCipher
is = new CipherInputStream(is, decryptCipher);
writeData(is, os);
}
