Method and system for ordering a digital certificate by a user and for delivering the certificate to a certificate support device of the user. A placed order, in which personal data have been received from the user and the user has been authenticated by a registration unit, is stored in a responsible certification unit. A secret certificate PIN assigned to the order, which is otherwise known only to the certification unit, is transmitted to the user, and a certificate or a reference to a certificate is transmitted for storing to the certificate support device identified by a certificate support identification, if the certificate PIN and indications making it possible to determine the order are transmitted to the certification unit.