Patents by Inventor Didier Hunacek

Didier Hunacek 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 activating at least a function on a chipset and chipset for the implementation of the method
    Patent number: 8621236
    Abstract: A method for activating a function of a chipset comprising at least a memory and a calculation module in charge of cryptographic operations, the memory containing at least a seed and the calculation module containing at least one cryptographic algorithm, the method comprising the steps of: receiving at least one of a segmentation key, a global key and a global cryptographic algorithm selector; transmitting at least two items selected from the group consisting of the seed, the received segmentation key, the global key and the global cryptographic algorithm selector, to the calculation module, each of the items being provided by different entities; generating in the calculation module, a temporary key by using one of said at least one cryptographic algorithm of the calculation module and at least the two items; and verifying an authenticity of a received activation message using the temporary key and controlling activation based on the verification.
    Type: Grant
    Filed: June 6, 2011
    Date of Patent: December 31, 2013
    Assignee: Nagravision S.A.
    Inventors: Patrick Servet, Didier Hunacek
  • METHOD FOR ACTIVATING AT LEAST A FUNCTION ON A CHIPSET AND CHIPSET FOR THE IMPLEMENTATION OF THE METHOD
    Publication number: 20110302427
    Abstract: A method for activating a function of a chipset comprising at least a memory and a calculation module in charge of cryptographic operations, the memory containing at least a seed and the calculation module containing at least one cryptographic algorithm, the method comprising the steps of: receiving at least one of a segmentation key, a global key and a global cryptographic algorithm selector; transmitting at least two items selected from the group consisting of the seed, the received segmentation key, the global key and the global cryptographic algorithm selector, to the calculation module, each of the items being provided by different entities; generating in the calculation module, a temporary key by using one of said at least one cryptographic algorithm of the calculation module and at least the two items; and verifying an authenticity of a received activation message using the temporary key and controlling activation based on the verification.
    Type: Application
    Filed: June 6, 2011
    Publication date: December 8, 2011
    Applicant: NAGRAVISION S.A.
    Inventors: Patrick SERVET, Didier Hunacek