try {
                KeyStore.ProtectionParameter protection = new KeyStore.PasswordProtection(keyStorePassword);
                KeyStore.SecretKeyEntry entry = (KeyStore.SecretKeyEntry) keyStore.getEntry("smb.session." + sessionId, protection);
                if (entry != null) {
                    key = entry.getSecretKey();
                    sessionKeys.put(sessionId, key);
                }