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. 05, 2016
Filed:
Aug. 17, 2007
Hidehisa Takamizawa, Fuchu, JP;
Asahiko Yamada, Tokorozawa, JP;
Tomoaki Morijiri, Chofu, JP;
Koji Okada, Tokyo, JP;
Tatsuro Ikeda, Fuchu, JP;
Minoru Nishizawa, Fuchu, JP;
Yoshihiro Fujii, Fuchu, JP;
Hidehisa Takamizawa, Fuchu, JP;
Asahiko Yamada, Tokorozawa, JP;
Tomoaki Morijiri, Chofu, JP;
Koji Okada, Tokyo, JP;
Tatsuro Ikeda, Fuchu, JP;
Minoru Nishizawa, Fuchu, JP;
Yoshihiro Fujii, Fuchu, JP;
KABUSHIKI KAISHA TOSHIBA, Tokyo, JP;
TOSHIBA SOLUTIONS CORPORATION, Tokyo, JP;
Abstract
An authentication device receives each authentication context including an output information block, an input information block, and an authenticator block. The output information block includes a process result and process result identification information. The input information block includes a process result and process result identification information. The authentication device verifies each authenticator block. The authentication device searches for the output information block having the same value of process result identification information as the value of process result identification information in the input information block from other authentication contexts based on process result identification information in the input information block included in each authentication context. The authentication device verifies whether or not the process result in the input information block is equal to the process result in the searched output information block, and authenticates that all the authentication contexts have validity when all the verification results are valid.