serial_element->add_child("X509IssuerName", "dsig")->add_child_text (leaf().issuer());
serial_element->add_child("X509SerialNumber", "dsig")->add_child_text (leaf().serial());
data->add_child("X509SubjectName", "dsig")->add_child_text (leaf().subject());
serial_element->add_child("X509IssuerName", "dsig")->add_child_text (leaf().issuer());
serial_element->add_child("X509SerialNumber", "dsig")->add_child_text (leaf().serial());
data->add_child("X509SubjectName", "dsig")->add_child_text (leaf().subject());