keyVersions.putIfAbsent(sessionId, 0);
        }

        // Optionally store in KeyStore
        if (keyStore != null) {
            try {
                KeyStore.SecretKeyEntry keyEntry = new KeyStore.SecretKeyEntry(secretKey);
                KeyStore.ProtectionParameter protection = new KeyStore.PasswordProtection(keyStorePassword);
                keyStore.setEntry("smb.session." + sessionId, keyEntry, protection);