A method for authenticate of a portable object by means of a off - line terminals, corresponding, portable object and corresponding terminal

摘要

The invention relates to a method of authenticating a terminal out of line (1) of a portable object (2) comprising a processing circuit (4) adapted to deliver a value of the secondary (rx), which is a function of a primary value (qi) transmitted by the terminal. & br / according to the invention, it is put into place in the terminal an authentication table (5) with a series of values units (c) and a series of values of the control (iu), each value of the control being transformed by a one-way function of the value of the secondary (rx) calculated by the processing circuit of a portable object is authentic, and in the event of a connection of a portable object with the terminal, it transmits to the portable object, one of the primary values (c) of the table, the function is applied to a single direction to the value of the secondary (rx) received from the portable object and the result obtained is compared to the value of the corresponding control (iu) of the table. & br / the invention also relates to the portable object and the terminal adapted to this method.