return ret;
}
public ByteString buildAuthChallenge(UserData user, CredentialData credential, ClientCertificate clientCertificate) {
for (SecretKeyData secretKey : user.getSecretStore().getSecretKeyList()) {
SecretKeyType type = secretKey.getType();
if (type != SecretKeyType.ENCRYPTED_WITH_CREDENTIAL) {
continue;
}
if (!Objects.equal(secretKey.getCredentialKey(), credential.getKey())) {