Experimental analysis of the electromagnetic instruction skip fault model and consequences for software countermeasures

Microcontrollers storing valuable data or using security functions are vulnerable to fault injection attacks. Among the various types of faults, instruction skips induced at runtime proved be effective against identification routines encryption algorithms. Until recently, most research works assessed a model that consists in single skip, i.e. ability prevent one chosen program from being executed. We question this for EM on experimental basis and report possibility induce several consecutive instructions skips. Such an extended duplication-based software countermeasure as our experiments revealed.