Patents by Inventor Christophe Eichwald

Christophe Eichwald has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Processor and method for processing mask data
    Patent number: 11922133
    Abstract: 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.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: March 5, 2024
    Assignees: STMicroelectronics (Rousset) SAS, STMicroelectronics (Grenoble 2) SAS
    Inventors: Rene Peyrard, Fabrice Romain, Jean-Michel Derien, Christophe Eichwald
  • METHOD FOR DETECTING REVERSE ENGINEERING ON A PROCESSOR USING AN INSTRUCTION POINTER AND CORRESPONDING INTEGRATED CIRCUIT
    Publication number: 20220198005
    Abstract: 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.
    Type: Application
    Filed: December 16, 2021
    Publication date: June 23, 2022
    Inventors: Diana Moisuc, Christophe Eichwald
  • REVERSE ENGINEERING DETECTION METHOD ON A PROCESSOR USING AN INSTRUCTION REGISTER AND CORRESPONDING INTEGRATED CIRCUIT
    Publication number: 20220197644
    Abstract: Method for detecting the linear extraction of information in a processor using an instruction register for storing an instruction includes 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.
    Type: Application
    Filed: December 16, 2021
    Publication date: June 23, 2022
    Inventors: Diana Moisuc, Christophe Eichwald
  • PROCESSOR AND METHOD FOR PROCESSING MASK DATA
    Publication number: 20210109711
    Abstract: An embodiment relates to a method for processing masked data using a processor comprising an arithmetic and logic unit, in which the masked data remain masked during their processing in the arithmetic and logic unit.
    Type: Application
    Filed: September 30, 2020
    Publication date: April 15, 2021
    Inventors: Rene Peyrard, Fabrice Romain, Jean-Michel Derien, Christophe Eichwald