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:
Dec. 28, 2010
Filed:
Jul. 12, 2004
Yukio Tsuruoka, Tokyo, JP;
Yoshinao Kikuchi, Saitama, JP;
Shintaro Mizuno, Tokyo, JP;
Kenji Takahashi, Tokyo, JP;
Kei Karasawa, Tokyo, JP;
Yukio Tsuruoka, Tokyo, JP;
Yoshinao Kikuchi, Saitama, JP;
Shintaro Mizuno, Tokyo, JP;
Kenji Takahashi, Tokyo, JP;
Kei Karasawa, Tokyo, JP;
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Abstract
An address allocated to a user by an authentication server is used as an IP address of a packet which is transmitted from a user terminal, preventing an illicit use if the IP address were eavesdropped. An authentication serverperforms an authentication of a user based on a user authentication information which is transmitted from the user terminal, and upon a successful authentication, allocates an address to the user terminal, and issues a ticket containing the address to be returned to the user terminal. The user terminal sets up the address contained in the ticket as a source address, and transmits the ticket to the application server, requesting a session to be established. After verifying that the ticket is authentic, the serverstores the ticket and establishes a session with the user terminal. The user terminal transmits a service request packet containing the source address to the serverutilizing the session. If the source address coincides with the address contained in the stored ticket, the serverprovides a service to the user.