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. 16, 2021
Filed:
Feb. 22, 2017
Applicant:
Mitsubishi Electric Corporation, Tokyo, JP;
Inventor:
Yusuke Naito, Tokyo, JP;
Assignee:
MITSUBISHI ELECTRIC CORPORATION, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 29/06 (2006.01); H04L 9/06 (2006.01); H04L 9/32 (2006.01);
U.S. Cl.
CPC ...
H04L 9/0618 (2013.01); H04L 9/3242 (2013.01);
Abstract
A message authenticator generation apparatus () generates a message authenticator using a block cipher E having a block size n. A hash function unit () calculates a hash value w with a hash function h having an output length longer than n bits, taking as input a message M. A post-processing unit () performs calculations using the block cipher E on the hash value w calculated by the hash function unit (), so as to calculate a message authenticator T not larger than the block size n for the message M.