Patents by Inventor Pascal Fuchs

Pascal Fuchs 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).

  • Patent number: 12481792
    Abstract: A method is provided in which digital information is stored in a plurality of segments in an external memory. The method is performed by a processing device and comprises the steps of loading a first integrity table containing a plurality of first integrity elements respectively authenticating the plurality of segments of digital information, and an associated digital signature of the plurality of first integrity elements, from the external memory; verifying the digital signature associated with the first integrity table, and loading segments of digital information in a protected form from the external memory to the processing device.
    Type: Grant
    Filed: April 19, 2021
    Date of Patent: November 25, 2025
    Assignee: NAGRAVISION SARL
    Inventors: Karine Villegas, Roan Hautier, Pascal Fuchs, Fabien Gremaud
  • Publication number: 20250356060
    Abstract: A secure element has a secure processor for securely processing the digital information stored in a memory external to the secure element, and a loading and pre-processing system configured to load the digital information from the external memory into the secure element, and pre-process said digital information by executing a cryptographic algorithm before processing said digital information by the secure processor. The system reads a version number of the digital information that has been loaded, from an internal memory of the secure element, and uses said version number in executing the cryptographic algorithm.
    Type: Application
    Filed: May 29, 2025
    Publication date: November 20, 2025
    Applicant: Nagravision Sàrl
    Inventors: Karine VILLEGAS, Roan HAUTIER, Fabien GREMAUD, Pascal FUCHS
  • Patent number: 12367321
    Abstract: A secure element has a secure processor for securely processing the digital information stored in a memory external to the secure element, and a loading and pre-processing system configured to load the digital information from the external memory into the secure element, and pre-process said digital information by executing a cryptographic algorithm before processing said digital information by the secure processor. The system reads a version number of the digital information that has been loaded, from an internal memory of the secure element, and uses said version number in executing the cryptographic algorithm.
    Type: Grant
    Filed: April 27, 2021
    Date of Patent: July 22, 2025
    Assignee: Nagravision Sàrl
    Inventors: Karine Villegas, Roan Hautier, Fabien Gremaud, Pascal Fuchs
  • Publication number: 20230205934
    Abstract: A secure element has a secure processor for securely processing the digital information stored in a memory external to the secure element, and a loading and pre-processing system configured to load the digital information from the external memory into the secure element, and pre-process said digital information by executing a cryptographic algorithm before processing said digital information by the secure processor. The system reads a version number of the digital information that has been loaded, from an internal memory of the secure element, and uses said version number in executing the cryptographic algorithm.
    Type: Application
    Filed: April 27, 2021
    Publication date: June 29, 2023
    Applicant: Nagravision Sàrl
    Inventors: Karine VILLEGAS, Roan HAUTIER, Fabien GREMAUD, Pascal FUCHS
  • Publication number: 20230153470
    Abstract: A method is provided in which digital information is stored in a plurality of segments in an external memory. The method is performed by a processing device and comprises the steps of loading a first integrity table containing a plurality of first integrity elements respectively authenticating the plurality of segments of digital information, and an associated digital signature of the plurality of first integrity elements, from the external memory; verifying the digital signature associated with the first integrity table, and loading segments of digital information in a protected form from the external memory to the processing device.
    Type: Application
    Filed: April 19, 2021
    Publication date: May 18, 2023
    Applicant: NAGRAVISION SARL
    Inventors: Karine VILLEGAS, Roan HAUTIER, Pascal FUCHS, Fabien GREMAUD
  • Publication number: 20220050605
    Abstract: A method for anti-replay protection of a memory of a device, wherein the memory is used by and external to a secure element of the device, the method comprising the following steps, wherein the steps are performed in the device after a content of the memory is modified: generating device state data indicative of a state of the content of the memory; transmitting the device state data to a remote system for updating an authentication key of the device stored in a data storage of the remote system and for use by the remote system in an authentication procedure; and providing authentication information based on the device state data from the secure element to the remote system in the authentication procedure between the device and the remote system to verify a validity of the content of the memory.
    Type: Application
    Filed: November 27, 2019
    Publication date: February 17, 2022
    Inventors: Fabien GREMAUD, Pascal FUCHS, Karine VILLEGAS, Jérôme PERRINE, Roan HAUTIER
  • Patent number: 8954696
    Abstract: The present invention describes a system and a method for securely loading digital information from an external storage device in a non-trusted environment into a memory module in a trusted environment within a data processing system. A master mode and a service mode are described, the master mode being when the secure loading is requested by a secure processor residing within the trusted environment and the service mode being when the loading is requested by an element which is external to the trusted environment i.e. in the non-trusted environment. The system comprises at least one storage device, one memory module and at least one first processor, and further comprises a memory access controller module connected between the processor and the memory module, and a secure memory management module connected to the processor, the memory module, the storage device and the memory access controller.
    Type: Grant
    Filed: June 13, 2013
    Date of Patent: February 10, 2015
    Assignee: Nagravision S.A.
    Inventors: Fabien Gremaud, Christophe Gogniat, Marc Bellocchio, Pascal Fuchs
  • Publication number: 20130276149
    Abstract: The present invention describes a system and a method for securely loading digital information from an external storage device in a non-trusted environment into a memory module in a trusted environment within a data processing system. A master mode and a service mode are described, the master mode being when the secure loading is requested by a secure processor residing within the trusted environment and the service mode being when the loading is requested by an element which is external to the trusted environment i.e. in the non-trusted environment. The system comprises at least one storage device, one memory module and at least one first processor, and further comprises a memory access controller module connected between the processor and the memory module, and a secure memory management module connected to the processor, the memory module, the storage device and the memory access controller.
    Type: Application
    Filed: June 13, 2013
    Publication date: October 17, 2013
    Inventors: FABIEN GREMAUD, CHRISTOPHE GOGNIAT, MARC BELLOCCHIO, PASCAL FUCHS
  • Patent number: 8489836
    Abstract: The present invention describes a system and a method for securely loading digital information from a storage device into a memory module in a data processing system, said data processing system comprising at least one storage device, one memory module and at least one processor, said data processing system further comprising a memory access controller module connected between the processor and the memory module, and a secure memory management module connected to the processor, the memory module, the storage device and the memory access controller. Requests by the processor for data are passed to the secure memory management module, which loads the data from the storage device to the memory module and configures the memory access controller such that the processor will have access to the data.
    Type: Grant
    Filed: June 23, 2009
    Date of Patent: July 16, 2013
    Assignee: Nagravision SA
    Inventors: Fabien Gremaud, Christophe Gogniat, Marc Bellocchio, Pascal Fuchs
  • Publication number: 20090319741
    Abstract: The present invention describes a system and a method for securely loading digital information from a storage device into a memory module in a data processing system, said data processing system comprising at least one storage device, one memory module and at least one processor, said data processing system further comprising a memory access controller module connected between the processor and the memory module, and a secure memory management module connected to the processor, the memory module, the storage device and the memory access controller. Requests by the processor for data are passed to the secure memory management module, which loads the data from the storage device to the memory module and configures the memory access controller such that the processor will have access to the data.
    Type: Application
    Filed: June 23, 2009
    Publication date: December 24, 2009
    Applicant: Nagravision SA
    Inventors: Fabien Gremaud, Christophe Gogniat, Marc Bellocchio, Pascal Fuchs