The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 20, 2023
Filed:
Oct. 13, 2020
Google Llc, Mountain View, CA (US);
Matthew Robert Jones, Lake Forest Park, WA (US);
Benjamin Jackson Benoy, Redmond, WA (US);
John David Thayer Wood, Duvall, WA (US);
Google LLC, Mountain View, CA (US);
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. The method includes, after the respective validation time period of the lowest intermediate certificate authority in the chain has elapsed, adding, to the certificate revocation list, one or more of the plurality of end entity certificates.