Stmicroelectronics International N.v.

Stmicroelectronics S.r.l.

Vitantonio Distasio

Amedeo Veneroso

Francesco Varone

Pasquale Vastano

Agostino Vanore

A method is to detect a message compatible with the OTA (Over The Air) standard and affected by a wrong ciphering. The method may include receiving the ciphered OTA message; deciphering the OTA message; and reading a counter field of padding bytes in the deciphered OTA message and reading corresponding padding bytes in the OTA message deciphered. The method may also include detecting at least one bit in at least one of the padding bytes of the OTA message deciphered, with the at least one bit being indicative of the wrong ciphering.

Method to detect an OTA (over the air) standard message affected by an error

A clock frequency of a clock signal is calculated, with the clock signal being received by an IC card from a terminal or an internal clock within the IC card. A first time-stamp is received from the terminal, and a first value of the timer is set. The timer of the IC card is started when the first time-stamp is received. A second time-stamp is received, and a second value of the timer is read when the second time-stamp is received. The frequency is calculated by comparing a difference between the second and the first timer values, and a difference between the second and the first time stamps.

Method and system for calculating a clock frequency of a clock signal for an IC card

A method for controlling a loss of reliability of a non-volatile memory (NVM) included in an integrated circuit card (ICC) may include determining whether the NVM is reliable at the operating system (OS) side of the ICC, and generating an event associated with the reliability of the NVM at the OS side for an application of the ICC, if the NVM is determined to be unreliable.

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Caserta, Italy

Vitantonio Distasio