Thales Dis France Sa

Gemalto Sa

Thales Dis France Sas

Ali Zeamari

Karine Villegas

Nicolas Roussel

Charles Coulier

Christophe Franchi

Pascal Leroy

Abdellah El Marouani

Jacques Dubrois

Nabil Hamzi

Morgan Printemps

Daniel Rade

Sébastien Balocco

A computer-implemented method for managing a real-time clock having a drift and being embedded in a portable tamper-resistant device, which receives applicative data when performing a banking transaction with another device. comprises a step of extracting a time from the applicative data, the method also includes a step of compensating the drift by updating the real-time clock based on said time.

Method for managing a real-time clock in a portable tamper-resistant device

The present invention relates to a method to generate prime numbers on board a portable device, said method comprising the steps of, each time at least one prime number is requested:

Method for on-board prime number generation

The invention is a method for negotiating a parameter of an optical communication protocol between two devices. One device displays a first calibration image comprising a series of pixel patterns having a predetermined position and different sizes. The other device takes a first calibration picture of the first calibration image, identifies a set comprising at least one detectable pixel pattern in the first calibration picture and selects a setting data based on the set. Then it displays a second calibration image comprising this setting data which is read by the first device via another calibration picture. The first device retrieves the setting data from the calibration picture, selects a value based on the setting data and updates the parameter with the selected value.

Method and system for negotiation of a parameter of an optical communication protocol between two devices

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Ali Zeamari