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:
Jul. 06, 2021
Filed:
Oct. 10, 2018
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventor:
Shota Shimizu, Kawasaki, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 21/57 (2013.01); H04L 9/32 (2006.01);
U.S. Cl.
CPC ...
G06F 21/572 (2013.01); G06F 21/575 (2013.01); H04L 9/3247 (2013.01);
Abstract
The present information processing apparatus sequentially activates a plurality of modules after the activation of a boot program. Each module uses verification information for verifying a signature of the module to be activated next to detect alteration of the module that is next to be activated, and activates the module to be activated next in a case where verification of the signature succeeds. Furthermore, each module holds in advance the verification information and its own signature.