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. 04, 2001
Filed:
Sep. 11, 1998
Yukihito Oowaki, Kanagawa, JP;
Hiroshige Fujii, Tokyo, JP;
Hideo Shimizu, Kanagawa, JP;
Takehisa Kato, Kanagawa, JP;
Naoki Endo, Tokyo, JP;
Atsushi Masuda, Kanagawa, JP;
Hiroaki Nishi, Kanagawa, JP;
Kazunori Ohuchi, Kanagawa, JP;
Masatoshi Sekine, Tokyo, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A semiconductor integrated circuit for cryptographic process according to the present invention, comprises a randomizing unit for randomizing first input data which is one of two divided parts of input data based on configuration information to identify an algorithm in randomizing process, a function F portion for receiving data which have been subjected to the randomizing process and then applying coding process to the data, and an exclusive logical sum circuit for receiving second input data which is other of two divided parts of the input data and output data from the function F portion and then outputting an exclusive logical sum of the second input data and the output data.