Patents by Inventor Nathalie RENAULT

Nathalie RENAULT 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).

  • Method for verification of integrity and decryption of an encrypted message, associated cryptomodule and terminal
    Patent number: 11533162
    Abstract: A method for verification of integrity and decryption of an encrypted message including ordered data blocks, the method performed by a cryptomodule and including storing or activating an integrity key; calculating an initial integrity code; generating a verification key and storing it; for each data block: storing the data block; updating an intermediate integrity code with the integrity key, the data block and the initial integrity code or the intermediate integrity code of the preceding data block; generating an authentication code using the verification key; deleting the data block; analysing the final integrity code; if the integrity is verified: storing or activating a decryption key specific to the encrypted message; for each data block: storing the data block; verifying the authenticity and the row of the data block using its authentication code; decrypting the data block with the decryption key; transmitting to the terminal the decrypted data block.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: December 20, 2022
    Assignee: AIRBUS DS SLC
    Inventors: Marc Mouffron, Nathalie Renault
  • METHOD FOR VERIFICATION OF INTEGRITY AND DECRYPTION OF AN ENCRYPTED MESSAGE, ASSOCIATED CRYPTOMODULE AND TERMINAL
    Publication number: 20200204347
    Abstract: A method for verification of integrity and decryption of an encrypted message including ordered data blocks, the method performed by a cryptomodule and including storing or activating an integrity key; calculating an initial integrity code; generating a verification key and storing it; for each data block: storing the data block; updating an intermediate integrity code with the integrity key, the data block and the initial integrity code or the intermediate integrity code of the preceding data block; generating an authentication code using the verification key; deleting the data block; analysing the final integrity code; if the integrity is verified: storing or activating a decryption key specific to the encrypted message; for each data block: storing the data block; verifying the authenticity and the row of the data block using its authentication code; decrypting the data block with the decryption key; transmitting to the terminal the decrypted data block.
    Type: Application
    Filed: December 20, 2019
    Publication date: June 25, 2020
    Inventors: Marc MOUFFRON, Nathalie RENAULT