Patents by Inventor Stefan Lemsitzer

Stefan Lemsitzer 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: 11272363
    Abstract: A method is provided for authenticating one device to another device. In the method, a first device proves to a second device that a first credential comprising multiple first attributes is valid. The second device proves to the first device that a second credential comprising multiple second attributes is valid. The first device reveals a first attribute of the multiple first attributes to the second device. The second device verifies the first attribute and decides whether to continue revealing attributes. If continuing, the second device reveals to the first device a first attribute of the multiple second attributes. The first device verifies the first attribute of the multiple second attributes. The first device decides whether to continue revealing attributes. Attributes can be revealed until one of the first or second devices end the method or until no attributes of the multiple first and second attributes remain to be revealed.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: March 8, 2022
    Assignee: NXP B.V.
    Inventors: Marcel Medwed, Pim Vullers, Joost Roland Renes, Stefan Lemsitzer
  • Publication number: 20210360395
    Abstract: In accordance with a first aspect of the present disclosure, an ultra-wideband communication node is provided, comprising: an ultra-wideband communication unit configured to transmit one or more messages to a plurality of external responder nodes and to receive one or more responses from said responder nodes; a processing unit configured to use a common cryptographic session key to encrypt said messages, wherein said common cryptographic session key is a key shared between the ultra-wideband communication node and all the external responder nodes; wherein the processing unit is further configured to use responder-specific cryptographic session keys to decrypt the responses and/or to encrypt further messages to the responder nodes, and wherein each individual one of said responder-specific cryptographic session keys is a key shared between the ultra-wideband communication node and one of the external responder nodes.
    Type: Application
    Filed: April 21, 2021
    Publication date: November 18, 2021
    Inventors: Stefan Lemsitzer, Srivathsa Masthi Parthasarathi, Hugues Jean Marie de Perthuis
  • Publication number: 20210306852
    Abstract: A method is provided for authenticating one device to another device. In the method, a first device proves to a second device that a first credential comprising multiple first attributes is valid. The second device proves to the first device that a second credential comprising multiple second attributes is valid. The first device reveals a first attribute of the multiple first attributes to the second device. The second device verifies the first attribute and decides whether to continue revealing attributes. If continuing, the second device reveals to the first device a first attribute of the multiple second attributes. The first device verifies the first attribute of the multiple second attributes. The first device decides whether to continue revealing attributes. Attributes can be revealed until one of the first or second devices end the method or until no attributes of the multiple first and second attributes remain to be revealed.
    Type: Application
    Filed: March 25, 2020
    Publication date: September 30, 2021
    Inventors: Marcel Medwed, Pim Vullers, Joost Roland Renes, Stefan Lemsitzer
  • Patent number: 10762311
    Abstract: A method is provided for authenticating a device in a system having a blockchain. The method includes executing a one-side authentication of the device. The results of the one-side authentication are submitted to the blockchain at a first blockchain node of a plurality of blockchain nodes. The one-side authentication is later verified at a second blockchain node of the plurality of blockchain nodes. The device may be a tag in a radio frequency identification (RFID) system.
    Type: Grant
    Filed: January 29, 2019
    Date of Patent: September 1, 2020
    Assignee: NXP B.V.
    Inventors: Stefan Lemsitzer, Marc Vauclair
  • Publication number: 20200242313
    Abstract: A method is provided for authenticating a device in a system having a blockchain. The method includes executing a one-side authentication of the device. The results of the one-side authentication are submitted to the blockchain at a first blockchain node of a plurality of blockchain nodes. The one-side authentication is later verified at a second blockchain node of the plurality of blockchain nodes. The device may be a tag in a radio frequency identification (RFID) system.
    Type: Application
    Filed: January 29, 2019
    Publication date: July 30, 2020
    Inventors: Stefan Lemsitzer, Marc Vauclair
  • Patent number: 8701077
    Abstract: Aspects of the present disclosure are directed toward methods and systems which generate a plurality of Read-Only Memory (ROM) codes. In response to generating the ROM codes, an image is generated for each of the plurality of ROM codes. The images for each of the plurality of ROM codes are mapped on a single reticle, and a wafer is provided, which includes a plurality of individual devices. The reticle is utilized, which includes an image for each of the plurality of ROM codes, to print a respective one of the images onto a respective one of the plurality of individual devices.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: April 15, 2014
    Assignee: NXP B.V.
    Inventors: Stefan Lemsitzer, Heimo Scheucher, Claus Grzyb