Abstract: A computerized authentication method of an electronic document, in particular a file designed to be on-board an aircraft. The method includes generating a digital signature of the electronic document using a private key corresponding to a public key certified by a certifying authority, and sending via the Internet a time stamp request of the electronic document to a time stamping authority and receiving in response thereto a time-stamp signed by the certifying authority. The method includes sending via the Internet a request to an Online Certificate Statute Protocol (OCSP) server and receiving in response thereto a statute of the certificate of the public key, and adding to the electronic document of the digital signature, the time-stamp and the statute of the certificate to create an authenticated electronic document.

Abstract: This invention relates to an authentication method for an electronic document (100), in particular a file designed to be on-board an aircraft, comprising: the generation (110) of a digital signature of said electronic document using a private key (107) corresponding to a public key certified by a certifying authority; a time stamp request (126) of said electronic document made to a time stamping authority (125) to obtain a time-stamp (127); a request (136) to obtain the statute of the certificate of said public key (137), following on from said time stamp request; the addition (140) to said electronic document of the digital signature, the time-stamp and the statute of said certificate to create an authenticated electronic document (150).