u2fs_rc rc = u2fs_registration_verify(*pctx, response, &result);
if (rc == U2FS_OK) {
const char *keyHandle = u2fs_get_registration_keyHandle(result);
u2fs_rc rc = u2fs_registration_verify(*pctx, response, &result);
if (rc == U2FS_OK) {
const char *keyHandle = u2fs_get_registration_keyHandle(result);