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:
Dec. 29, 2009
Filed:
Mar. 07, 2003
Applicants:
Tomomi Kasuya, Tokyo, JP;
Mitsuru Matsui, Tokyo, JP;
Tetsuya Ichikawa, Tokyo, JP;
Inventors:
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 9/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A sub converterprovided in a data conversion apparatus for data encryption/decryption includes a data conversion function and a data transfer function or key transfer function, the sub converter converts data and transfers data that is nonlinear converted in a main converteror a key that is outputted from a key KL registerby switching between the data conversion function and the data or key transfer function.