User authentication system for providing online services...

Information security – Access control or authentication – Network

Reexamination Certificate

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Details

C713S156000

Reexamination Certificate

active

07861288

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 server100performs 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 server300, requesting a session to be established. After verifying that the ticket is authentic, the server300stores the ticket and establishes a session with the user terminal. The user terminal transmits a service request packet containing the source address to the server300utilizing the session. If the source address coincides with the address contained in the stored ticket, the server300provides a service to the user.

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