Patent · US Active

Supply authentication via timing challenge response

US9878555B2 · kind B2 · utility

2Cited by

0References

15Claims

0Family size

Assignee

HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. · US

Inventors

Jefferson P. Ward · Vancouver, US
Stephen D. Panshin · Corvallis, US

Key dates

Filing date	Aug 30, 2013
Grant date	Jan 30, 2018
Priority date	—
Expiry date	Aug 30, 2033

Classification

Technology area (CPC G)Physics
CPC primaryG06F2221/2151
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

In an example implementation, an authentication system includes a printer having a controller and a memory. The authentication system also includes an authentication algorithm stored in the memory and executable on the controller to issue a cryptographic timing challenge, and to authenticate a print supply cartridge when the cartridge provides a challenge response corresponding to an expected response within an expected time window.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.