This article analyzes the sentence dictated by the Supreme Court of Justice related to an economic action interposed by a certification services provider against the Ministry Secretary General of the Presidency. The Court ruled that certification of a public servant advanced electronic signature could be certified by the certifying officer of each public administration, without the need of being accredited before any authority, but fulfilling similar requirements to those required of certification service providers. Exceptionally, certificated service providers could perform such certification with a resolution based on technical and economic convenience for the public administration.