private final static Logger LOGGER = Logging.getLogger(KeyringFilePublicKeyService.class);
    private final File keyRingFile;
    private LoadedKeys keys;

    public KeyringFilePublicKeyService(File keyRingFile) {
        this.keyRingFile = keyRingFile;
    }

    private LoadedKeys load() {
        synchronized (this) {
            if (keys == null) {
                try {