Patents by Inventor Cham Ho Li

Cham Ho Li 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: 10419421
    Abstract: Methods, systems, and computer programs are presented for creating a secure network fabric and for adding trusted devices to an existing secure network fabric. One method includes an operation for setting a switch into a provisioning mode where the switch does not enforce secure communications. While the switch is in provisioning mode, the method performs operations including establishing a connection from the switch to a provisioning controller, sending a certificate signing request (CSR) from the switch to the provisioning controller, and receiving, from the provisioning controller, a security certificate generated by a certificate authority. The method further includes an operation for entering a lockdown mode by the switch after receiving the security certificate, where the switch, while in lockdown mode, secures communications utilizing the security certificate.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: September 17, 2019
    Assignee: Big Switch Networks, Inc.
    Inventors: Andreas Wundsam, Gregor Maier, Carl D. Roth, Jeffrey Townsend, Jason Parraga, Cham Ho Li, Tomasz Klimczyk
  • Publication number: 20180048639
    Abstract: Methods, systems, and computer programs are presented for creating a secure network fabric and for adding trusted devices to an existing secure network fabric. One method includes an operation for setting a switch into a provisioning mode where the switch does not enforce secure communications. While the switch is in provisioning mode, the method performs operations including establishing a connection from the switch to a provisioning controller, sending a certificate signing request (CSR) from the switch to the provisioning controller, and receiving, from the provisioning controller, a security certificate generated by a certificate authority. The method further includes an operation for entering a lockdown mode by the switch after receiving the security certificate, where the switch, while in lockdown mode, secures communications utilizing the security certificate.
    Type: Application
    Filed: August 11, 2016
    Publication date: February 15, 2018
    Inventors: Andreas Wundsam, Gregor Maier, Carl D. Roth, Jeffrey Townsend, Jason Parraga, Cham Ho Li, Tomasz Klimczyk