Patents by Inventor Yukiko Tezuka

Yukiko Tezuka has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Authentication server, authentication method in authentication server, and non-transitory computer readable medium storing authentication process program of authentication server
    Patent number: 10419443
    Abstract: According to one embodiment, an authentication method in an authentication server determines, based on positional information of a terminal to be used and positional information of a user terminal, whether the distance between the terminal to be used and the user terminal is within a predetermined distance and determines, based on the result of the determination, whether to allow a user of user identification information transmitted from the user terminal to use a predetermined service using the terminal to be used. It is therefore possible to associate the user, the service, and the terminal to be used with one another in a state in which a high security performance is maintained.
    Type: Grant
    Filed: November 12, 2015
    Date of Patent: September 17, 2019
    Assignee: NEC CORPORATION
    Inventor: Yukiko Tezuka
  • AUTHENTICATION SERVER, AUTHENTICATION METHOD IN AUTHENTICATION SERVER, AND NON-TRANSITORY COMPUTER READABLE MEDIUM STORING AUTHENTICATION PROCESS PROGRAM OF AUTHENTICATION SERVER
    Publication number: 20170346832
    Abstract: According to one embodiment, an authentication method in an authentication server determines, based on positional information of a terminal to be used and positional information of a user terminal, whether the distance between the terminal to be used and the user terminal is within a predetermined distance and determines, based on the result of the determination, whether to allow a user of user identification information transmitted from the user terminal to use a predetermined service using the terminal to be used. It is therefore possible to associate the user, the service, and the terminal to be used with one another in a state in which a high security performance is maintained.
    Type: Application
    Filed: November 12, 2015
    Publication date: November 30, 2017
    Applicant: NEC Corporation
    Inventor: Yukiko TEZUKA
  • AUTHENTICATION SYSTEM, AUTHENTICATION SERVER, AUTHENTICATION METHOD, AND AUTHENTICATION PROGRAM
    Publication number: 20140359746
    Abstract: A validity judgment means 81 judges validity of each received service ID. A service availability judgment means 82 judges availability of a service utilizing a medium or device identified by a physical ID based on the received physical ID. An authentication information management means 84 stores at least a service ID and a judgment result of the service ID by the validity judgment means 81 in an authentication information storage means 83 in association with a key ID. A use right judgment means 85 judges a use right of a service to be utilized by the user from a service ID and a judgment result of the service ID in association with a key ID stored in the authentication information storage means 83 based on a policy defining a service available range depending on at least a combination of service IDs.
    Type: Application
    Filed: August 14, 2012
    Publication date: December 4, 2014
    Inventors: Yukiko Tezuka, Kazuki Kato