Patent ID: 6928164

Claim:
A date processing device which includes a circuit which consists of various circuit sections which can be fed with supply voltage via a configuration of conductors, and includes data processing means which constitute such a circuit section that can be fed with the supply voltage and are arranged to process data while utilizing a characteristic value, and also includes sequencing means which also constitute such a circuit section that can be fed with the supply voltage and are arranged to execute an algorithm in order to control the data processing means in conformity with this algorithm, which algorithm comprises a given number N of sub-algorithms which contain identical sequences of algorithm steps and can be executed in a given order each time when the algorithm is executed, and wherein, upon processing of data by means of the data processing means under the control of the sequencing means in conformity with the algorithm, the data processing causes a current peak pattern to occur at the area of the configuration of conductors, the pattern configuration of the current peak pattern being dependent on the algorithm steps, an the process data and on the characteristic value, characterized in that the circuit additionally includes order fixation means which co-operate with the sequencing means and whereby, upon each execution of the algorithm, an order can be fixed from a plurality of feasible orders for the execution of the N sub-algorithms.