}
        return key8;
    }

    /**
     * Default provider is BouncyCastleProvider.
     * For registering custom provider
     * @see jcifs.util.Crypto#initProvider(Provider)
     * @return Provider
     */
    public static Provider getProvider() {
        if (provider != null) {
            return provider;
        }
        provider = new BouncyCastleProvider();