The requirements for qualified certificates are defined by the european directive 1999/93/EC (annex I, dir.) as follow:
1- the indication that the certificate is issued as a qualified certificate;
2- the identification of the Certification Authority and the State (European or foreigner) in which it is established;
3- the name (or pseudonym) of the signatory, to identify her/him;
4- signature-verification data which correspond to signature-creation data under the control of the signatory;
5- the indication of the period of validity of the certificate;
6- the identity code of the certificate; and
7- the advanced electronic signature of the certification-service-provider (Certification Authority).