Know which is the documents needed to request a Qualified Digital Certificate
Documents legalization depends on where it’s requested.
This legalization has to be made by the competent authorities of each country:
1) In Portugal on a Lawyer, Notary or Solicitor
2) In other countries by affixing the Apostille seal http://www.hcch.net/upload/abc12e.pdf) or at a Portuguese Embassy or Consulate.