Abstract: A method for secure transmission using a fax server, including transmitting a document to be faxed, by a sender to a server, in the form of a digital file in a non-fax format, as well as information relative to the identity of the recipient; calculating a Tiff format file from the digital file on the one hand, the creation time and date of the file and an informative file on the other hand; calculating a signature from said Tiff document and entering the result of this calculation in an additional file; recording the files in a secured space accessible by the sender and the recipient; modifying the Tiff file to be transmitted to insert the signature and information allowing the recipient to access the recorded files; transmitting the file by the server to the telephone address of the recipient, according to a fax standard, and issuing a transmission report by the server in the form of an electronic message in a non-fax format.

Abstract: The present invention relates to a method for secure transmission using a fax server, comprising the following steps: a step of transmitting the document to be faxed, by the sender to a server, in the form of a digital file in a non-fax format, as well as information relative to the identity of the recipient, a step of calculating a Tiff format file from said digital file on the one hand, the creation date and time of said file and an informative file on the other hand and modifying said Tiff file to be transmitted to insert a signature and information allowing the recipient to access the recorded files. This file is then transmitted by the server to the telephone address of the recipient of said file, according to a fax standard. The invention also relates to a computer system and program for implementing this method.