Patents by Inventor Yannick LE PROVOST

Yannick LE PROVOST 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).

  • Tweakable block ciphers for secure data encryption
    Patent number: 11689353
    Abstract: A block cipher encryption device for encrypting a data unit plaintext into blocks of ciphertexts, the data unit plaintext being assigned a tweak value and being divided into one or more plaintext blocks. The block cipher encryption device comprises: a combinatorial function unit associated with each plaintext block, the combinatorial function unit being configured to determine a tweak block value by applying a combinatorial function between a value derived from the tweak value and a function of a block index assigned to the plaintext block, a first masking unit in association with each plaintext block, the first masking unit being configured to determine a masked value by applying a data masking algorithm to the tweak block value determined by the combinatorial function unit associated with the plaintext block.
    Type: Grant
    Filed: June 5, 2019
    Date of Patent: June 27, 2023
    Assignee: SECURE-IC SAS
    Inventors: Théophile Boue, Margaux Dugardin, Yannick Le Provost, Brice Moreau
  • TWEAKABLE BLOCK CIPHERS FOR SECURE DATA ENCRYPTION
    Publication number: 20210266143
    Abstract: A block cipher encryption device for encrypting a data unit plaintext into blocks of ciphertexts, the data unit plaintext being assigned a tweak value and being divided into one or more plaintext blocks. The block cipher encryption device comprises: a combinatorial function unit associated with each plaintext block, the combinatorial function unit being configured to determine a tweak block value by applying a combinatorial function between a value derived from the tweak value and a function of a block index assigned to the plaintext block, a first masking unit in association with each plaintext block, the first masking unit being configured to determine a masked value by applying a data masking algorithm to the tweak block value determined by the combinatorial function unit associated with the plaintext block.
    Type: Application
    Filed: June 5, 2019
    Publication date: August 26, 2021
    Inventors: Théophile BOUE, Margaux DUGARDIN, Yannick LE PROVOST, Brice MOREAU