Digital electronic component which is protected against electrical-type analyses

摘要

This invention relates to a digital electronic component which is protected against electrical- and/or electromagnetic-type analyses. The inventive component comprises: a synchronous element ( 10 ) which is controlled by a clock (H); means ( 11, 12 ) of generating said clock (H), the frequency of which varies randomly between a minimum value and a maximum value for at least a given period of time; and means ( 13 ) of controlling the random nature of the frequency change of said clock (H).