Patents Assigned to NAGRAVISION SARL
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Publication number: 20230344625Abstract: A device for generating at least one cryptographic key by selecting at least three input data selected among, on one hand, a predetermined data and, on the other hand, a function of at least one piece of data having a type belonging to the group including: a physical unclonable type, corresponding to physical unclonable function data, a hardwired type, corresponding to data hardwired within said device, and a software type, corresponding to software data, assembling the at least three input data to produce an assembled input data, and applying the assembled input data into a cryptographic element to produce a cryptographic key.Type: ApplicationFiled: September 10, 2021Publication date: October 26, 2023Applicant: NAGRAVISION, SARLInventors: Marco MACCHETTI, Jerome PERRINE, Didier HUNACEK
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Patent number: 11785315Abstract: A method for securely receiving a multimedia content by a client device operated by one or more operator(s) involving a dedicated provisioning server of a security provider managing symmetric secrets used by the client devices and operators license servers. The provisioning server provides to the client device one or more generations of operator specific unique device secrets, which are then exploited by the various operators' license servers to deliver licenses such that authorized client devices can consume protected multimedia contents.Type: GrantFiled: October 3, 2022Date of Patent: October 10, 2023Assignee: NAGRAVISION SÀRLInventors: Yann Bieber, André Nicoulin
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Patent number: 11784804Abstract: A method for data security implemented as an application on a device includes generating a request for one or more secret shares needed to reconstruct a key. The device stores a first secret share in its memory. The method also includes signing the request with a certificate that identifies the request as valid without identifying the device, and sending the request, signed with the certificate, to at least one other device. The method further includes receiving, from the at least one other device, the one or more secret shares, determining whether the one or more secret shares received from the at least one other device is sufficient to reconstruct the key, and reconstructing the key using the first secret share and the one or more secret shares upon determining that the one or more secret shares are sufficient to reconstruct the key.Type: GrantFiled: September 17, 2021Date of Patent: October 10, 2023Assignee: Nagravision SàrlInventor: Tommaso Gagliardoni
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Patent number: 11777720Abstract: A method for data security implemented as an application on a device includes generating a request for one or more secret shares needed to reconstruct a key. The device stores a first secret share in its memory. The method also includes signing the request with a certificate that identifies the request as valid without identifying the device, and sending the request, signed with the certificate, to at least one other device. The method further includes receiving, from the at least one other device, the one or more secret shares, determining whether the one or more secret shares received from the at least one other device is sufficient to reconstruct the key, and reconstructing the key using the first secret share and the one or more secret shares upon determining that the one or more secret shares are sufficient to reconstruct the key.Type: GrantFiled: June 12, 2020Date of Patent: October 3, 2023Assignee: NAGRAVISION SÀRLInventor: Tommaso Gagliardoni
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Patent number: 11775664Abstract: The present disclosure relates generally to data access control solutions. In particular, techniques are provided to implement a secure and distributed file storage scheme and in particular, a managed access system using a blockchain. In some aspects, a process of the disclosed technology includes operations for associating a first key share with a first copy of a file, wherein the first copy of the file is stored by a first party, associating a second key share with a second copy of the file, and recording versioning information corresponding with the file on a distributed ledger accessible by the first party and the second party. In some aspects, the process can further include operations for managing access to the file using the first key share and the second key share. Systems and machine-readable media are also provided.Type: GrantFiled: August 2, 2021Date of Patent: October 3, 2023Assignee: NAGRAVISION SARLInventors: Romain Jufer, Cristian Ruiz, Olivier Morel
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Publication number: 20230300157Abstract: Systems and techniques are described herein for monitoring network activity between a customer premise and the Internet, identifying data packets for review that are exchanged between the customer premise and the Internet, determining Internet Protocol address information for the data packets, receiving device name information associated with the data packets, and sending information to the customer premise that includes the device name and alert information related to the data packets.Type: ApplicationFiled: March 17, 2022Publication date: September 21, 2023Applicant: NAGRAVISION SARLInventors: Joshua Roys, William Lane
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Patent number: 11760305Abstract: Passive entry systems, such as passive entry-passive start vehicle systems, using short-range wireless communication signals to determine a distance between nomadic devices and unlockable devices based on a round trip time of flight (TOF) measurement.Type: GrantFiled: December 16, 2021Date of Patent: September 19, 2023Assignee: Nagravision SàrlInventors: Frédéric Thomas, Joël Conus
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Patent number: 11750620Abstract: In overview, a computer-implemented method of transmitting data in a data stream from a first device to a second device is disclosed. The data stream is encrypted before transmission from the first device to the second device, and a location of the data in the data stream is indicated to the second device. The location may be a pre-shared location between the first and second devices, or the first device may transmit the location of the data to the second device. The second device decrypts the encrypted data stream, identifies the data in the data stream based on the location, and encrypts the identified data in the data stream.Type: GrantFiled: November 28, 2019Date of Patent: September 5, 2023Assignee: Nagravision SàrlInventors: Fabien Gremaud, Frederic Thomas, Jean-Bernard Fischer
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Patent number: 11716540Abstract: The disclosure provide methods and content consumption devices that enable a scene, for example a 360° scene, that is larger (i.e. has more pixels in at least one dimension) than a display format of the content consumption device to be displayed. Constituent scene views are received individually by the content consumption device, for example as broadcasts, and are combined, for example stitched together, at the content consumption device to output a part of the scene that fits in the display format. The part of the scene (and hence the required constituent streams) to be displayed are determined by a signal, for example a navigational input from a user, enabling the user to navigate in the scene.Type: GrantFiled: August 18, 2021Date of Patent: August 1, 2023Assignee: Nagravision SàrlInventor: Bertrand Wendling
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Patent number: 11714883Abstract: A media device receives a domain key from a service provider. The media device further encrypts media with a media key and encrypts the media key with the domain key to form an encrypted media token: the protected media key is encapsulated in an encrypted media token. The service provider may then receive the encrypted media token and one or more receiving entity identifiers relating to a receiving entity and ascertain whether the receiving entity is entitled to access media from the media device. If the receiving entity is entitled to access media from the media device, the service provider decrypts the cryptographic media token using the domain key to obtain the media key and providing the media key to the receiving entity. As such, an authenticated receiving entity may obtain the media key necessary to decrypt the media.Type: GrantFiled: April 4, 2018Date of Patent: August 1, 2023Assignee: Nagravision SàrlInventors: Michel Angel, Hervé Retaureau, Antony Celletti
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Publication number: 20230224173Abstract: A method for remotely programming a programmable device designed to provide an expected sensitive result. The method including transmitting a first program code to the programmable device, the first program code being configured to get at least one distinctive data unique and physically inherent to the programmable device, retrieving the distinctive data, and transmitting a second program code based on the retrieved distinctive data to the programmable device, so as to load the second program code into the programmable device.Type: ApplicationFiled: July 6, 2021Publication date: July 13, 2023Applicant: Nagravision SàrlInventors: Jerome PERRINE, Karine VILLEGAS, Didier HUNACEK, André NICOULIN, Richard ROULLEAU
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Publication number: 20230222251Abstract: An integrated circuit device includes a semiconductor substrate layer and at least one active layer including electronic components and supported by the semiconductor substrate layer. The semiconductor substrate layer and the at least one active layer are sandwiched between two protective layers acting as physical obstacles to prevent the passage of radiations. In addition, the two protective layers are electrically connected to a detection circuit that can monitor an electrical information of the protective layers and detect a physical attack of at least one of the two protective layers, based on the monitored electrical information.Type: ApplicationFiled: July 8, 2021Publication date: July 13, 2023Applicant: NAGRAVISION SàrlInventors: Sylvain PELISSIER, Pascal AUBRY
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Publication number: 20230224707Abstract: A method of acquiring access rights to conditional access content. The method comprises receiving an access right on a first terminal through a first communication channel; storing said access right in said first terminal; sending a request for said conditional access content to a content provider, said request containing at least an identifier of an account to which said first terminal is associated, an identifier of the requested content and a piece of information concerning said access right; verifying, by said content provider, the authenticity of said access right using said piece of information concerning the access right; and when there has been a successful verification, marking said access right as used, and sending said conditional access content to at least one terminal linked to said account. The first terminal using near field communication technology (NFC) during at least one transfer of said access rights.Type: ApplicationFiled: January 20, 2023Publication date: July 13, 2023Applicant: NAGRAVISION SarLInventors: Pierre SARDA, Philippe STRANSKY, Bertrand WENDLING
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Publication number: 20230205934Abstract: 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: ApplicationFiled: April 27, 2021Publication date: June 29, 2023Applicant: Nagravision SàrlInventors: Karine VILLEGAS, Roan HAUTIER, Fabien GREMAUD, Pascal FUCHS
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Patent number: 11669433Abstract: In overview, methods, computer programs products and devices for securing software are provided. In accordance with the disclosure, a method may comprise attaching a debugger process to a software process. During execution of the software process, operations relevant to the functionality of the code process are carried out within the debugger process. As a result, the debugger process cannot be replaced or subverted without impinging on the functionality of the software process. The software process can therefore be protected from inspection by modified or malicious debugging techniques.Type: GrantFiled: May 16, 2022Date of Patent: June 6, 2023Assignee: Nagravision SàrlInventors: Laurent Dore, Asfandyar Orakzai, Brecht Wyseur, Yihui Xu
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Publication number: 20230168908Abstract: A computer implemented method for sending context information between programs, the method including: displaying a graphical user interface including a plurality of selectable application icons; receiving a simultaneous selection of a first icon and a second icon from the plurality of selectable application icons; launching a first program associated with the first icon; launching a second program associated with the second icon; and sending context information between the first program and the second program.Type: ApplicationFiled: December 1, 2022Publication date: June 1, 2023Applicant: Nagravision SàrlInventors: Alain LE PERLERIN, Pierre SARDA
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Patent number: 11658954Abstract: The present invention relates in particular to a pairing method between a multimedia unit and one operator having an operator identifier, the multimedia unit having a multimedia unit identifier and receiving conditional access data from said operator, the method being characterized in that: receiving by the multimedia unit a multimedia unit key formed by applying a first cryptographically function to a personalization key and to the multimedia unit identifier; receiving by the operator an operator key formed by applying a second cryptographically function to said personalization key and to the operator identifier; said multimedia unit further having a function of the multimedia unit and said operator further having a function of the operator, these functions being such that the result of the application of the function of the operator to said operator key and to said multimedia unit identifier is equal to the result of the application of the function of the multimedia unit to said multimedia unit key aType: GrantFiled: June 20, 2019Date of Patent: May 23, 2023Assignee: Nagravision SàrlInventors: Nicolas Fischer, Brecht Wyseur, Jean-Bernard Fischer, Marco Macchetti
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Publication number: 20230153470Abstract: 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: ApplicationFiled: April 19, 2021Publication date: May 18, 2023Applicant: NAGRAVISION SARLInventors: Karine VILLEGAS, Roan HAUTIER, Pascal FUCHS, Fabien GREMAUD
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Publication number: 20230119890Abstract: A method if provided for securely processing digital information performed by a secure element having a secure processor. The method includes loading the digital information from an external memory into the secure element; segmenting the digital information into words of digital information (Wij,k), generating error-detection codes or error-correction codes from said words of digital information and associating said error-detection codes with the corresponding words; transferring the words of digital information and the associated error-detection codes or error-correction codes to the secure processor; and in the secure processor, verifying the words of digital information based on the associated error-detection codes or error-correction codes before processing the digital information contained in said words.Type: ApplicationFiled: March 25, 2021Publication date: April 20, 2023Applicant: Nagravision SarlInventors: Karine VILLEGAS, Roan HAUTIER
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Patent number: 11630925Abstract: A method of displaying content items, for example message items in a messaging application or service, is disclosed. The method comprises receiving encrypted content items in a chronological sequence; decrypting the content items; causing display of a display sequence, in order of the chronological sequence, of a respective place holder in place of each of the decrypted content items, and, in response to a user input, causing display of the respective content item in place of one or more of the place holders. Each place holder has an appearance of a scrambled version of the respective content item. The display sequence may be contiguous in received items or sent content items may be interleaved with received content items in the display sequence, in which case sent content items may be displayed with place holders in the same way as received items. A corresponding system and corresponding computer readable medium or media are also disclosed.Type: GrantFiled: November 12, 2018Date of Patent: April 18, 2023Assignee: Nagravision SàrlInventors: Javier Quevedo-Fernandez, Michael Guesdon, Alain Henriette, Bernard Benoit