Patent ID: 8612764

Claim:
A method for secure transmission using a fax server, comprising: receiving a document to be faxed, by a server from a sender, in the form of a digital file in a non-fax format, as well as information relative to the identity of a recipient of the document; calculating a Tiff format file from said digital file on the one hand, the creation time and date of said digital file and an informative file on the other hand; calculating a signature from said Tiff format file and entering the result of the calculation in an additional file; recording said Tiff format and additional files in a secured space accessible by the sender and the recipient; modifying said Tiff format file to be transmitted to insert said signature and information allowing the recipient to access said recorded Tiff format and additional files; transmitting said Tiff format file by the server to a 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, wherein the method further comprises modifying said Tiff format file into a different format file and transmitting said different format file to the sender for verification and validation before said recording.