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User authentication method in network

  • US 20040030935A1
  • Filed: 07/28/2003
  • Published: 02/12/2004
  • Est. Priority Date: 10/31/2000
  • Status: Active Grant
First Claim
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1. A method for authenticating a user by which a server device of a service provider authenticates a service user on a network, the method comprising:

  • a confirmation information issuing step including receiving an authentication request from a first communication device of the service user, and then generating a confirmation information to be replied to the first communication device; and

    an authentication step of judging whether or not the confirmation information replied to the first communication device agrees with the confirmation information sent from the service user by a second communication device using a communication path that is different from a communication path of the first communication device.

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