The list of certificates accepted in the services provided via this Portal (Main site) are those accepted by the @FIRMA platform of the Ministry of Finance (both with regard to the provision of identification and electronic signature), namely the certificates included in:
Certificates supported by the @firma platform under Law 11/2007
Anexo-Proveedores de servicios de Certificación-v5.3. PLATAFORMA @FIRMA (pdf)
In all cases, certificates will be accepted (for identification purposes or for signature purposes) if they pass the validation process provided for in the VALIDe application of the Secretariat of State for the Civil Service. (https://valide.redsara.es/valide/).
For further general information on electronic signatures and certificates, please consult the information provided on the E-government portal.
A portal to resolve any doubts that may arise regarding the use of the eDNI