Patents by Inventor Diana Moisuc

Diana Moisuc 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).

  • Reverse engineering detection by counting consecutive incremental branch instructions in an instruction register of a processor
    Patent number: 12236000
    Abstract: 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.
    Type: Grant
    Filed: December 16, 2021
    Date of Patent: February 25, 2025
    Assignees: STMicroelectronics (Alps) SAS, STMicroelectronics (Grenoble 2) SAS
    Inventors: Diana Moisuc, Christophe Eichwald
  • Method for detecting reverse engineering on a processor using an instruction pointer and corresponding integrated circuit
    Patent number: 12174950
    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: Grant
    Filed: December 16, 2021
    Date of Patent: December 24, 2024
    Assignees: STMicroelectronics (Alps) SAS, STMicroelectronics (Grenoble 2) SAS
    Inventors: Diana Moisuc, 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
  • Protection of a microcontroller
    Patent number: 10984845
    Abstract: In an embodiment, a method for protecting an electronic circuit includes: detecting a malfunction of the electronic circuit; executing a plurality of waves of countermeasures without interrupting an operation of the electronic circuit; and triggering a reset of the electronic circuit after executing the plurality of waves of countermeasures. An interval between two waves of countermeasures of the plurality of waves of countermeasures is variable.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: April 20, 2021
    Assignees: STMicroelectronics (Rousset) SAS, STMicroelectronics (Alps) SAS
    Inventors: Diana Moisuc, Christophe Laurencin
  • PROTECTION OF A MICROCONTROLLER
    Publication number: 20200211607
    Abstract: In an embodiment, a method for protecting an electronic circuit includes: detecting a malfunction of the electronic circuit; executing a plurality of waves of countermeasures without interrupting an operation of the electronic circuit; and triggering a reset of the electronic circuit after executing the plurality of waves of countermeasures. An interval between two waves of countermeasures of the plurality of waves of countermeasures is variable.
    Type: Application
    Filed: December 27, 2019
    Publication date: July 2, 2020
    Inventors: Diana Moisuc, Christophe Laurencin
  • PROTECTION CIRCUIT
    Publication number: 20200210569
    Abstract: In an embodiment, an electronic circuit includes a plurality of protective nodes. Each protective node includes at least one monitoring circuit for processing information representative of a detection of a disturbance based on a detection circuit; and at least one reaction circuit for implementing a countermeasure controlled by the monitoring circuit.
    Type: Application
    Filed: December 27, 2019
    Publication date: July 2, 2020
    Inventors: Diana Moisuc, Christophe Laurencin