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. 12, 2005
Filed:
Aug. 15, 2000
Makoto Tatebayashi, Takarazuka, JP;
Kaoru Yokota, Ashiya, JP;
Motoji Ohmori, Hirakata, JP;
Fumihiko Sano, Fuchu, JP;
Naoki Endo, Fuchu, JP;
Makoto Tatebayashi, Takarazuka, JP;
Kaoru Yokota, Ashiya, JP;
Motoji Ohmori, Hirakata, JP;
Fumihiko Sano, Fuchu, JP;
Naoki Endo, Fuchu, JP;
Matsushita Electric Industrial Co., Ltd., Osaka-fu, JP;
Kabushiki Kaisha Toshiba, Kanagawa-ken, JP;
Abstract
The subkey data generating unithas two different subkey key generation processes. When encrypting a (T*n)plaintex block (where T denotes a predetermined cycle and n is a positive integer), sixteen sets of subkey data are generated. In all other cases, two sets of subkey data are generated. The encrypting unitencrypts the plaintex using the generated sixteen or two sets of subkey data.
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