Patents by Inventor Pascale Böffgen

Pascale Böffgen 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).

  • Publication number: 20240235824
    Abstract: Various embodiments of the teachings herein include a method for arranging a shared cryptographic key with a communication partner. The method may include: selecting a first point of a first elliptic curve; sending the first point to the communication partner using a public channel; receiving a second point of the first elliptic curve from the communication partner; and determining the shared key using a non-trivial, inverse shared mapping of the second point with respect to a shared isomorphic mapping of a second elliptic curve onto the first elliptic curve.
    Type: Application
    Filed: February 23, 2022
    Publication date: July 11, 2024
    Applicant: Siemens Aktiengesellschaft
    Inventors: Fabrizio De Santis, Pascale Böffgen
  • Publication number: 20240137213
    Abstract: Various embodiments of the teachings herein include a method for arranging a shared cryptographic key with a communication partner. The method may include: selecting a first point of a first elliptic curve; sending the first point to the communication partner using a public channel; receiving a second point of the first elliptic curve from the communication partner; and determining the shared key using a non-trivial, inverse shared mapping of the second point with respect to a shared isomorphic mapping of a second elliptic curve onto the first elliptic curve.
    Type: Application
    Filed: February 23, 2022
    Publication date: April 25, 2024
    Applicant: Siemens Aktiengesellschaft
    Inventors: Fabrizio De Santis, Pascale Böffgen
  • Patent number: 11055064
    Abstract: An automated system is provided. Examples of automated systems include processors for calculation which implement a secure boot process based on the plurality of numbers; chip cards for authentication; telecommunication equipment; programmable logic controllers, control devices for railways, etc. The operation is controlled depending on whether a sequential test for randomness of a plurality of numbers from a physical random number generator is marked as failed. This has the advantage that an online-test for integrity of the plurality of numbers is possible at a high accuracy and low latency.
    Type: Grant
    Filed: February 6, 2019
    Date of Patent: July 6, 2021
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Pascale Böffgen, Markus Dichtl
  • Publication number: 20190250890
    Abstract: An automated system is provided. Examples of automated systems include processors for calculation which implement a secure boot process based on the plurality of numbers; chip cards for authentication; telecommunication equipment; programmable logic controllers, control devices for railways, etc. The operation is controlled depending on whether a sequential test for randomness of a plurality of numbers from a physical random number generator is marked as failed. This has the advantage that an online-test for integrity of the plurality of numbers is possible at a high accuracy and low latency.
    Type: Application
    Filed: February 6, 2019
    Publication date: August 15, 2019
    Inventors: PASCALE BÖFFGEN, MARKUS DICHTL
  • Patent number: 10157248
    Abstract: The invention relates to a method and an apparatus for designing a circuit suitable for generating random bits and to a circuit for generating random bits. A random bit string which is used as a binary random number is generated, for example. The proposed method and the apparatus as well as the circuit are used to implement random number generators, for example. A jth specific function from a set of bijective mappings is selected as the jth function, wherein the jth specific function carries out a jth fixed-point-free mapping. At least one ith mapping device is then selected. An ith specific function from a set of bijective mappings is assigned to the ith function, with the result that an ith concatenation of the i functions carries out an ith fixed-point-free mapping.
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: December 18, 2018
    Assignee: Siemens Aktiengesellschaft
    Inventors: Pascale Böffgen, Markus Dichtl
  • Publication number: 20160253438
    Abstract: The invention relates to a method and an apparatus for designing a circuit suitable for generating random bits and to a circuit for generating random bits. A random bit string which is used as a binary random number is generated, for example. The proposed method and the apparatus as well as the circuit are used to implement random number generators, for example. A jth specific function from a set of bijective mappings is selected as the jth function, wherein the jth specific function carries out a jth fixed-point-free mapping. At least one ith mapping device is then selected. An ith specific function from a set of bijective mappings is assigned to the ith function, with the result that an ith concatenation of the i functions carries out an ith fixed-point-free mapping.
    Type: Application
    Filed: September 17, 2014
    Publication date: September 1, 2016
    Inventors: Pascale BÖFFGEN, Markus DICHTL
  • Patent number: 9236865
    Abstract: An apparatus for generating random bits includes a plurality of mapping devices. A respective mapping device is configured to map a predefined number of input signals, with the aid of a combinatorial mapping, into a predefined number of output signals. The plurality of mapping devices are concatenated with one another, and at least one combinatorial mapping is configured such that a state change of an input signal of a respective mapping device is mapped on average onto more than one output signal of the respective mapping device. No feedback loop is present such that a state change of at least one feedback output signal of a specific mapping device is fed as a state change of at least one input signal to another mapping device such that one or a plurality of output signals of the specific mapping device is influenced by the state change of the feedback output signal.
    Type: Grant
    Filed: May 2, 2014
    Date of Patent: January 12, 2016
    Assignee: Siemens Aktiengesellschaft
    Inventors: Pascale Böffgen, Markus Dichtl
  • Publication number: 20140354327
    Abstract: An apparatus for generating random bits includes a plurality of mapping devices. A respective mapping device is configured to map a predefined number of input signals, with the aid of a combinatorial mapping, into a predefined number of output signals. The plurality of mapping devices are concatenated with one another, and at least one combinatorial mapping is configured such that a state change of an input signal of a respective mapping device is mapped on average onto more than one output signal of the respective mapping device. No feedback loop is present such that a state change of at least one feedback output signal of a specific mapping device is fed as a state change of at least one input signal to another mapping device such that one or a plurality of output signals of the specific mapping device is influenced by the state change of the feedback output signal.
    Type: Application
    Filed: May 2, 2014
    Publication date: December 4, 2014
    Inventors: Pascale Böffgen, Markus Dichtl