Power supply method for an asynchronous calculation or processing element, e.g. for use in authorization circuits, to prevent attacks based on power analysis, whereby the power supply to the calculation element is randomly varied

摘要

Power supply method for an asynchronous calculation element (1) of an integrated circuit, whereby the power supplied is randomly varied. An Independent claim is made for a power supply circuit for an asynchronous processing element of an integrated circuit with a variable power supply (2) controlled in a random or pseudo-random manner.