Patents by Inventor Patrick Salle

Patrick Salle 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 to prevent power dissipation attacks on a cryptographic algorithm by implementing a random transformation step
    Publication number: 20060271795
    Abstract: The invention relates to a data protection method using a cryptographic algorithm comprising at least one execution cycle of repetitive operations for processing data elements (K2, R1) so as to generate encrypted information (C), this method comprising at least one step (120, 220) for randomly modifying the execution of at least one operation from one cycle to another, or at least one of the data elements, so that the encrypted information is unchanged by this random modification.
    Type: Application
    Filed: May 12, 2006
    Publication date: November 30, 2006
    Inventor: Patrick Salle
  • Method to prevent power dissipation attacks on a cryptographic algorithm by implementing a random transformation step
    Patent number: 7073072
    Abstract: A data protection method using a cryptographic algorithm comprising at least one execution cycle of repetitive operations for processing data elements (K2, R1) so as to generate encrypted information (C). At least one step (120, 220) is provided for randomly modifying the execution of at least one operation from one cycle to another, or at least one of the data elements, so that the encrypted information is unchanged by this random modification.
    Type: Grant
    Filed: March 17, 1999
    Date of Patent: July 4, 2006
    Assignee: Axalto SA
    Inventor: Patrick Salle