Hardware component and a method for implementing a camouflage of current traces generated by a digital system

A hardware component comprising:

• at least one set of digital elements defining a plurality of operational datapaths;
• a control element acting on a working condition of the hardware component;
• a logic test circuit for processing data operations along a reference datapath of the plurality of operational datapaths, the reference datapath having a minimum duration corresponding to at least a longest of the plurality of operational datapaths in the hardware component,
• wherein the hardware component is configured to:
• (a) obtaining a random or pseudo-random value and using the random or pseudo-random value to adjust, by the control element, a working condition of the hardware component to generate an adjusted working condition;
• (b) measure, by the logic test circuit, a reaction of the hardware component to the adjusted working condition through processing data operations along the reference datapath;
• (c) detect, by the logic test circuit, whether an error has taken place along the reference datapath based on the reaction measured at step (b);
• (d) in response to a detection, at step (c), that the error has occurred, modify, by the control element, the adjusted working condition, to generate a modified working condition.