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:
Nov. 19, 2024
Filed:
Apr. 29, 2022
Canon Kabushiki Kaisha, Tokyo, JP;
Kenjiro Hori, Saitama, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
An authentication system for authenticating an authentication-target apparatus by transmitting challenge data from an authenticating apparatus to the authentication-target apparatus and transmitting response data from the authentication-target apparatus to the authenticating apparatus. The authentication-target apparatus updates ae secret key and an encrypted original key stored in a memory using a new secret key and a new encrypted original key, derives an authentication key based on an original key, and generates the response data based on a challenge data received from the authenticating apparatus and the authentication key. The authentication apparatus derives an authentication key based on identification information of the authentication-target apparatus and an authentication original key, generates response data for verification based on the challenge data and the authentication key, and obtains an authentication result.