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. 30, 2013
Filed:
Jul. 10, 2009
Tatsuro Ikeda, Fuchu, JP;
Koji Okada, Tokyo, JP;
Tomoaki Morijiri, Chofu, JP;
Minoru Nishizawa, Fuchu, JP;
Hidehisa Takamizawa, Fuchu, JP;
Yoshihiro Fujii, Fuchu, JP;
Asahiko Yamada, Tokorozawa, JP;
Tatsuro Ikeda, Fuchu, JP;
Koji Okada, Tokyo, JP;
Tomoaki Morijiri, Chofu, JP;
Minoru Nishizawa, Fuchu, JP;
Hidehisa Takamizawa, Fuchu, JP;
Yoshihiro Fujii, Fuchu, JP;
Asahiko Yamada, Tokorozawa, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Solutions Corporation, Tokyo, JP;
Abstract
A root-account management apparatus generates an electronic signature based on a survival condition and a secret key when an authentication result of a user of a client apparatus is proper, and transmits derived-account credence element information including the survival condition, the electronic signature and a public key certificate to a derived-account management apparatus. The derived-account management apparatus creates derived-account information which becomes valid when the survival condition is satisfied so that the derived-account information includes both the derived-account credence element information which becomes invalid when a validity term of the public key certificate expires and a biometric information template of the user which is valid regardless of this validity term. Accordingly, even if an authentication element as a root (public key certificate) becomes invalid, a derived authentication element (biometric information template) can be prevented from becoming invalid.