Patents by Inventor Joshua D. Cazalas

Joshua D. Cazalas 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).

  • Threshold scheme enabled symmetric key member deletion
    Patent number: 11750376
    Abstract: A method of securing, by a managing node, communication in a network of member nodes including a first member node. Communication is secured using a (k, n1) secret sharing scheme during a first phase. The managing node announces a phase shift to a subsequent phase relative to the first phase. The managing node secures communication in the network during the subsequent phase using a (k+x, n2) secret sharing scheme. Each of the member nodes is previously in possession of exactly one corresponding unique share for the second key. The first member node is previously in possession of a first unique share for the second key. The managing node deletes the first member node from the subsequent phase by broadcasting the first unique share for the second key.
    Type: Grant
    Filed: May 26, 2022
    Date of Patent: September 5, 2023
    Assignee: The Boeing Company
    Inventors: Mingyan Li, Douglas A. Stuart, Jai J. Choi, Joshua D. Cazalas
  • THRESHOLD SCHEME ENABLED SYMMETRIC KEY MEMBER DELETION
    Publication number: 20220286276
    Abstract: A method of securing, by a managing node, communication in a network of member nodes including a first member node. Communication is secured using a (k, n1) secret sharing scheme during a first phase. The managing node announces a phase shift to a subsequent phase relative to the first phase. The managing node secures communication in the network during the subsequent phase using a (k+x, n2) secret sharing scheme. Each of the member nodes is previously in possession of exactly one corresponding unique share for the second key. The first member node is previously in possession of a first unique share for the second key. The managing node deletes the first member node from the subsequent phase by broadcasting the first unique share for the second key.
    Type: Application
    Filed: May 26, 2022
    Publication date: September 8, 2022
    Applicant: The Boeing Company
    Inventors: Mingyan Li, Douglas A. Stuart, Jai J. Choi, Joshua D. Cazalas
  • Threshold scheme enabled symmetric key member deletion
    Patent number: 11374744
    Abstract: A method of securing, by a managing node, communication in a network of member nodes including a first member node. Communication is secured using a (k, n1) secret sharing scheme during a first phase. The managing node announces a phase shift to a subsequent phase relative to the first phase. The managing node secures communication in the network during the subsequent phase using a (k+x, n2) secret sharing scheme. Each of the member nodes is previously in possession of exactly one corresponding unique share for the second key. The first member node is previously in possession of a first unique share for the second key. The managing node deletes the first member node from the subsequent phase by broadcasting the first unique share for the second key.
    Type: Grant
    Filed: May 15, 2020
    Date of Patent: June 28, 2022
    Assignee: The Boeing Company
    Inventors: Mingyan Li, Douglas A. Stuart, Jai J. Choi, Joshua D. Cazalas
  • THRESHOLD SCHEME ENABLED SYMMETRIC KEY MEMBER DELETION
    Publication number: 20210359843
    Abstract: A method of securing, by a managing node, communication in a network of member nodes including a first member node. Communication is secured using a (k, n1) secret sharing scheme during a first phase. The managing node announces a phase shift to a subsequent phase relative to the first phase. The managing node secures communication in the network during the subsequent phase using a (k+x, n2) secret sharing scheme. Each of the member nodes is previously in possession of exactly one corresponding unique share for the second key. The first member node is previously in possession of a first unique share for the second key. The managing node deletes the first member node from the subsequent phase by broadcasting the first unique share for the second key.
    Type: Application
    Filed: May 15, 2020
    Publication date: November 18, 2021
    Applicant: The Boeing Company
    Inventors: Mingyan Li, Douglas A. Stuart, Jai J. Choi, Joshua D. Cazalas