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:
Mar. 29, 2022
Filed:
Aug. 02, 2019
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventor:
Kazuo Moritomo, Kawasaki, JP;
Assignee:
CANON KABUSHIKI KAISHA, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 29/06 (2006.01); H04L 9/32 (2006.01); H04L 9/08 (2006.01);
U.S. Cl.
CPC ...
H04L 63/0442 (2013.01); H04L 9/0825 (2013.01); H04L 9/3268 (2013.01); H04L 63/0823 (2013.01);
Abstract
A communication device capable of performing encrypted communication with other communication device with use of a common key, obtains, from the other communication device, a certificate including a public key and identification information on the other communication device, verifies validity of the certificate on a basis of the identification information on the other communication device included in the certificate, and transmits the common key encrypted by the public key to the other communication device to perform the encrypted communication in a case where the certificate is valid as a result of the verification.