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:
Sep. 02, 2025
Filed:
Apr. 30, 2020
Hewlett-packard Development Company, L.p., Spring, TX (US);
Jefferson P. Ward, Vancouver, WA (US);
Stephen D. Panshin, Corvallis, OR (US);
Kyle Michel, Vancouver, WA (US);
Hewlett-Packard Development Company, L.P., Spring, TX (US);
Abstract
A logic circuitry package for a print apparatus includes a serial data bus interface to interface with a serial data bus, the logic circuit to respond to messages from the print apparatus over the serial data bus directed to a number of different addresses using different component keys for cryptographic authentication corresponding to each different address, the different component keys related to at least one master key of the print apparatus. The logic circuitry package further includes control logic which, in response to a session initiation request message on the serial data bus from the print apparatus, is to establish a secure communication session related to one of the different addresses, the control logic to cryptographically authenticate responses to each subsequent message of the secure communication session from the print apparatus using a component key corresponding to the address.