[keycloak-user] SAML request signature

Hi all, I’m new to keycloak, but managed to set up keycloak (1.9.2) and realm with a SAML identidy provider. Everything seems fine, but the SAML Request sent to my IDP is signed with a RSAKeyValue instead of X509Data. Can anyone help me how to configure keycloak to use a X.509 certificate? Greetings