SECURE METHODS OF TRANSMITTING AND RECEIVING DATA BETWEEN TERMINALS COMPRISING MEANS OF NEAR-FIELD COMMUNICATION, AND CORRESPONDING TERMINALS

摘要

The invention relates to a method of secure transmission of a data file from a sender terminal to at least one recipient terminal, each comprising means of near-field communication, and implementing an encryption of said file, as a function of at least one item of encryption information that is known or determined by said sender terminal, the method comprising the following steps, in said sender terminal: - chopping (35) said file into a first portion of file and a second portion of file; - sending (35) with the aid of said means of near-field communication a first data set comprising at least one portion of said encryption information item and said first portion of file to said recipient terminal or terminals; - sending (39) with the aid of radiofrequency transmission means a second data set comprising at least said second portion of file to said recipient terminal or terminals.