Patents Assigned to Cryptosense SAS
  • Patent number: 12105809
    Abstract: This disclosure relates to a non-intrusive method of detecting security flaws of a computer program APP. The method comprises a step of installing and executing an executable and non-instrumentalized version of the program APP in a computer system 1, the computer system 1 comprising at least one cryptographic function able to be called by the program APP. It also comprises, in the course of the execution of the program, a step of recording in a tracing file the modalities of calls to the cryptographic function and, after the execution of the program, a step of analyzing the tracing file so as to devise a data structure of the states taken by the cryptographic object manipulated in the course of the execution of the program. The data structure is analyzed to detect calls to the cryptographic function that are liable to form a security flaw.
    Type: Grant
    Filed: July 31, 2023
    Date of Patent: October 1, 2024
    Assignee: Cryptosense SAS
    Inventors: Bertrand Bonnefoy-Claudet, Etienne Millon, Nathan Rebours, Graham Steel
  • Patent number: 11768944
    Abstract: This disclosure relates to a non-intrusive method of detecting security flaws of a computer program APP. The method comprises a step of installing and executing an executable and non-instumentalized version of the program APP in a computer system 1, the computer system 1 comprising at least one cryptographic function able to be called by the program APP. It also comprises, in the course of the execution of the program, a step of recording in a tracing file the modalities of calls to the cryptographic function and, after the execution of the program, a step of analyzing the tracing file so as to devise a data structure of the states taken by the cryptographic object manipulated in the course of the execution of the program. The data structure is analyzed to detect calls to the cryptographic function that are liable to form a security flaw.
    Type: Grant
    Filed: May 11, 2018
    Date of Patent: September 26, 2023
    Assignee: Cryptosense SAS
    Inventors: Bertrand Bonnefoy-Claudet, Etienne Millon, Nathan Rebours, Graham Steel