decrypt = output;
        return decrypt;
    }


    private static byte[] getHmac ( byte[] data, byte[] key ) throws GeneralSecurityException {
        Key macKey = new SecretKeySpec(key.clone(), KerberosConstants.HMAC_ALGORITHM);
        Mac mac = Mac.getInstance(KerberosConstants.HMAC_ALGORITHM);
        mac.init(macKey);
        return mac.doFinal(data);
    }


    public String getUserRealm () {

        this.targetHost = targetHost;
        this.transport = transport.acquire();
        this.trees = new ArrayList<>();
        this.credentials = tf.getCredentials().unwrap(CredentialsInternal.class).clone();
    }


    /**
     * @return the configuration used by this session
     */
    @Override
    public final Configuration getConfig () {
        return this.transportContext.getConfig();
    }