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User control of a secure wireless computer network

  • US 7,596,223 B1
  • Filed: 09/12/2000
  • Issued: 09/29/2009
  • Est. Priority Date: 09/12/2000
  • Status: Active Grant
First Claim
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1. A computerized method of establishing a secure wireless communication channel between an access point and a station, the channel being encrypted with a channel key, the method comprising:

  • the access point receiving a connection request from the station to initiate a setup connection between the access point and the station;

    the access point sending a shared key to the station in response to the connection request if the access point is capable of handling a connection to the station;

    the access point selecting a secret access point key subsequent to sending the shared key;

    the access point generating a self-distributed key using the secret access point key;

    the access point generating a first value using the secret access point key and a second value from the station, wherein the second value has been generated by the station using a secret station key;

    the access point sending the first value to the station, wherein the station uses the first value and the secret station key to calculate the self-distributed key;

    the access point receiving an encrypted user name and an encrypted password from the station, wherein the station has encrypted the user name and the password with the self-distributed key; and

    the access point decrypting the user name and the password to check for validity;

    the access point encrypting the channel key using the self-distributed key if the user name and the password are valid; and

    the access point sending the encrypted channel key to the station to cause the station to terminate the setup connection and to establish a secured connection with the access point using the channel key.

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