Patents by Inventor John David Thayer Wood

John David Thayer Wood 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).

  • Representing certificate expiration with time-based intermediate certificate authorities
    Patent number: 11683188
    Abstract: A method for representing certificate expiration includes obtaining, from a root certificate authority, a root digital certificate and generating a chain of intermediate certificate authorities. Each intermediate certificate authority includes a respective intermediate certificate digitally signed by the intermediate certificate authority that is immediately higher in the chain and a respective validation time period indicating a range of times when the intermediate certificate authority is permitted to digitally sign certificates. The respective validation time period includes the validation time period of each intermediate certificate authority that is lower in the chain. The method includes generating a certificate revocation list and generating, from the lowest intermediate certificate authority in the chain, a plurality of end entity certificates.
    Type: Grant
    Filed: October 13, 2020
    Date of Patent: June 20, 2023
    Assignee: Google LLC
    Inventors: Matthew Robert Jones, Benjamin Jackson Benoy, John David Thayer Wood
  • Representing Certificate Expiration with Time-Based Intermediate Certificate Authorities
    Publication number: 20220116229
    Abstract: A method for representing certificate expiration includes obtaining, from a root certificate authority, a root digital certificate and generating a chain of intermediate certificate authorities. Each intermediate certificate authority includes a respective intermediate certificate digitally signed by the intermediate certificate authority that is immediately higher in the chain and a respective validation time period indicating a range of times when the intermediate certificate authority is permitted to digitally sign certificates. The respective validation time period includes the validation time period of each intermediate certificate authority that is lower in the chain. The method includes generating a certificate revocation list and generating, from the lowest intermediate certificate authority in the chain, a plurality of end entity certificates.
    Type: Application
    Filed: October 13, 2020
    Publication date: April 14, 2022
    Applicant: Google LLC
    Inventors: Matthew Robert Jones, Benjamin Jackson Benoy, John David Thayer Wood