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20250190552. Process Detecting (INSTITUT MINES TELECOM)

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PROCESS FOR DETECTING AN ATTEMPTED LINEAR EXTRACTION OF THE CONTENT OF A MEMORY

Abstract: “a method for detecting attempted linear extraction of a program code recorded in a memory () of an electronic circuit () is provided. the program code instructions that, in order to be read by a microprocessor core (), are loaded sequentially via an instruction bus () into an instruction register () for storing the instructions that is controlled at least by a clock signal (clk) and a reset signal (reset). each instruction is loaded into the instruction register () on an edge of the clock signal (clk). the discontinuity instructions code and/or what are referred to as “security marker” instructions are inserted among the program instructions so as to be read during the execution of the program. the method includes triggering a predefined alert action () in the event of lack of detection of a discontinuity instruction or of a security marker, in accordance with a predefined monitoring rule.

Inventor(s): Jean-Max DUTERTRE, Théophile GOUSSELOT, Jean-Baptiste RIGAUD, Olivier POTIN

CPC Classification: G06F21/554 ({involving event detection and direct action})

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