Stmicroelectronics (Grenoble 2) Sas

Stmicroelectronics (Alps) Sas

Stmicroelectronics (Rousset) Sas

Christophe Eichwald

Diana Moisuc

Fabrice Romain

Rene Peyrard

Jean-Michel Derien

Method for detecting the linear extraction of information in a processor using an instruction register for storing an instruction including an operation code. The method includes monitoring the instructions successively stored in the instruction register including decoding the operation codes, determining the number of consecutive operation codes encoding incremental branches, and generating a detection signal if the number is greater than or equal to a detection threshold.

Reverse engineering detection by counting consecutive incremental branch instructions in an instruction register of a processor

Method for detecting the linear extraction of information in a processor using an instruction pointer. The method includes monitoring the values of the instruction pointer, determining a number of consecutive increments incrementing the values of the instruction pointer by a constant amount, and generating a detection signal if the number is greater than or equal to a detection threshold.

Method for detecting reverse engineering on a processor using an instruction pointer and corresponding integrated circuit

A method includes processing, by an arithmetic and logic unit of a processor, masked data, and keeping, by the arithmetic and logic unit of the processor, the masked data masked throughout their processing by the arithmetic and logic unit. A processor includes an arithmetic and logic unit configured to keep masked data masked throughout processing of the masked data in the arithmetic and logic unit.

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Sassenage, France

Christophe Eichwald