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:
Sep. 07, 2021
Filed:
Feb. 25, 2020
Applicant:
Megachips Corporation, Osaka, JP;
Inventors:
Takahiko Sugahara, Osaka, JP;
Hiromu Yutani, Osaka, JP;
Assignee:
MEGACHIPS CORPORATION, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 9/00 (2006.01); G06F 21/60 (2013.01); G06F 21/85 (2013.01); H04L 9/06 (2006.01); G09C 1/00 (2006.01); G06F 21/79 (2013.01);
U.S. Cl.
CPC ...
H04L 9/003 (2013.01); G06F 21/606 (2013.01); G06F 21/79 (2013.01); G06F 21/85 (2013.01); G09C 1/00 (2013.01); H04L 9/0656 (2013.01); G06F 2221/2123 (2013.01); H04L 2209/08 (2013.01);
Abstract
A control circuit causes a first cryptographic module to perform a dummy operation in a command processing period and a data processing period in which a second cryptographic module performs a normal operation while the first cryptographic module does not perform a normal operation.