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:
Feb. 10, 2015
Filed:
Mar. 03, 2009
Yukio Tsuruoka, Tokyo, JP;
Yoshinao Kikuchi, Tokyo, JP;
Tomoo Fukazawa, Tokyo, JP;
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Abstract
A secret information serveron a networkand a client apparatusconstitute an authentication information generating system. The secret information serverhas a function to confirm the validity of a user in accordance with user identification information received from the client apparatusand a function to hold the secret information database of each user and to send the secret information database of a user whose validity has been confirmed to the client apparatusof the user. The client apparatushas a main memoryhaving a domain A where an application or a main OS is executed and a domain B which has a program execution environment mutually independent of that for the domain A. The secret information database received from the secret information serveris saved in the domain B, and authentication information is generated by using the secret information database. Secret information required to generate the authentication information for user authentication is held securely at low cost.