KeyStore keystore = KeyStore.getInstance(KeyStore.getDefaultType());
    FileInputStream is = new FileInputStream(it.authenticationMethod.keystore);
    try {
        keystore.load(is, am.getKeypwd().getPlainText().toCharArray());
    } finally {
        is.close();
    }

    def KEY_ENCIPHERMENT_USAGE = 2 // https://www.ietf.org/rfc/rfc3280.txt