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. 30, 2026
Filed:
Dec. 05, 2023
Canon Kabushiki Kaisha, Tokyo, JP;
Hirotaka Ittogi, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An authentication method for authenticating an authentication target apparatus by an authentication apparatus is provided. The method includes: the authentication apparatus performing first encryption processing in accordance with first encryption processing information; the authentication target apparatus performing second decryption processing in accordance with second encryption processing information; the authentication target apparatus performing second encryption processing in accordance with the second encryption processing information; the authentication apparatus performing first decryption processing in accordance with the first encryption processing information. The authentication apparatus changes the first encryption processing information in accordance with a predetermined rule when either of the first encryption processing and the first decryption processing is performed, and the authentication target apparatus changes the second encryption processing information in accordance with the predetermined rule when either of the second encryption processing and the second decryption processing is performed.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile