Patents by Inventor Koichi Takasugi

Koichi Takasugi 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).

  • Terminal identification method, authentication method, authentication system, server, terminal, wireless base station, program, and recording medium
    Patent number: 8848912
    Abstract: A terminal identification method is provided which enables two-way communications between terminals and a network while identifying terminal IDs and protecting privacy. Also, authentication method and system are provided which require no complicated calculating process, less steps and smaller amount for wireless communications, and less power consumption. A server and terminal share a hash function and an initial value determined for each terminal, calculate the same temporary ID by hashing the initial value the same number of times with the hash function, and identify the terminal using the calculated temporary ID. The server and the terminal also hold a common hash function and authentication information, acquire an authenticating communication parameter from communication parameters temporarily common during communication, and generate an authentication key using the authentication information, the authenticating communication parameter, and the hash function.
    Type: Grant
    Filed: December 19, 2006
    Date of Patent: September 30, 2014
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Koichi Takasugi, Koki Mitani, Hiroshi Saito
  • Terminal identification method, authentication method, authentication system, server, terminal, wireless base station, program, and recording medium
    Patent number: 8533472
    Abstract: A terminal identification method is provided which enables two-way communications between terminals and a network while identifying terminal IDs and protecting privacy. Also, authentication method and system are provided which require no complicated calculating process, less steps and smaller amount for wireless communications, and less power consumption. A server and terminal share a hash function and an initial value determined for each terminal, calculate the same temporary ID by hashing the initial value the same number of times with the hash function, and identify the terminal using the calculated temporary ID. The server and the terminal also hold a common hash function and authentication information, acquire an authenticating communication parameter from communication parameters temporarily common during communication, and generate an authentication key using the authentication information, the authenticating communication parameter, and the hash function.
    Type: Grant
    Filed: November 23, 2010
    Date of Patent: September 10, 2013
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Koichi Takasugi, Koki Mitani, Hiroshi Saito
  • Terminal Identification Method, Authentication Method, Authentication System, Server, Terminal, Wireless Base Station, Program, and Recording Medium
    Publication number: 20110072121
    Abstract: A terminal identification method is provided which enables two-way communications between terminals and a network while identifying terminal IDs and protecting privacy. Also, authentication method and system are provided which require no complicated calculating process, less steps and smaller amount for wireless communications, and less power consumption. A server and terminal share a hash function and an initial value determined for each terminal, calculate the same temporary ID by hashing the initial value the same number of times with the hash function, and identify the terminal using the calculated temporary ID. The server and the terminal also hold a common hash function and authentication information, acquire an authenticating communication parameter from communication parameters temporarily common during communication, and generate an authentication key using the authentication information, the authenticating communication parameter, and the hash function.
    Type: Application
    Filed: November 23, 2010
    Publication date: March 24, 2011
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Koichi Takasugi, Koki Mitani, Hiroshi Saito
  • Terminal Identification Method, Authentication Method, Authentication System, Server, Terminal, Wireless Base Station, Program, and Recording Medium
    Publication number: 20090024848
    Abstract: A terminal identification method is provided which enables two-way communications between terminals and a network while identifying terminal IDs and protecting privacy. Also, authentication method and system are provided which require no complicated calculating process, less steps and smaller amount for wireless communications, and less power consumption. A server and terminal share a hash function and an initial value determined for each terminal, calculate the same temporary ID by hashing the initial value the same number of times with the hash function, and identify the terminal using the calculated temporary ID. The server and the terminal also hold a common hash function and authentication information, acquire an authenticating communication parameter from communication parameters temporarily common during communication, and generate an authentication key using the authentication information, the authenticating communication parameter, and the hash function.
    Type: Application
    Filed: December 19, 2006
    Publication date: January 22, 2009
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Koichi Takasugi, Koki Mitani, Hiroshi Saito