INTEGRATED CIRCUIT AND METHOD TO PROTECT SECRET DATA

摘要

1. Method for protecting secret code data stored in a data memory contained in a monolithic integrated circuit from an analysis in which it is possible to form conclusions as to the memory content from the signals at the memory outputs, the transfer of the code data from the data memory (2) into a peripheral logic (13), likewise contained in said monolithic integrated circuit, being limited by an arrangement to a predetermined time period, characterized in that the start of this time period is determined so as to be unrecognizable from the outside, and in that said arrangement is effective directly at the memory output.