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. 13, 2012
Filed:
Sep. 20, 2007
Applicant:
Norihito Aoki, Kawasaki, JP;
Inventor:
Norihito Aoki, Kawasaki, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A communication system includes determining whether first integrity information of a first encryption key is true or false, performing communication by using a first secret key corresponding to the first encryption key when the first integrity information is true, displaying second integrity information of a second encryption key, determining whether the second integrity information is true or false, and performing communication by using a second secret key corresponding to the second encryption key when the second integrity information is true.