this(token, null);
    }

    /**
     * Constructs a KerberosToken from token bytes with decryption keys.
     *
     * @param token the token bytes
     * @param keys array of Kerberos keys for decryption
     * @throws PACDecodingException if token decoding fails
     */
    public KerberosToken(byte[] token, KerberosKey[] keys) throws PACDecodingException {

     * Parse Kerberos authorization data based on the authorization type.
     *
     * @param authType the type of authorization data
     * @param token the authorization data token
     * @param keys the Kerberos keys for decryption
     * @return a list of parsed authorization data
     * @throws PACDecodingException if the data cannot be decoded
     */

        final CachedCipher cipher = new CachedCipher();
        cipher.setKey("mySecretKey");

        final byte[] original = "Hello World".getBytes();
        final byte[] encrypted = cipher.encrypto(original);
        final byte[] decrypted = cipher.decrypto(encrypted);

        assertThat(encrypted, is(not(original)));
        assertArrayEquals(original, decrypted);
    }

    @Test