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Method for the access of the mobile terminal to the WLAN and for the data communication via the wireless link securely

  • US 8,726,022 B2
  • Filed: 08/05/2003
  • Issued: 05/13/2014
  • Est. Priority Date: 11/06/2002
  • Status: Active Grant
First Claim
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1. A method for the secure access of a mobile terminal to a Wireless Local Area Network (WLAN) and for secure data communication via wireless link, wherein when a Mobile Terminal (MT) logs on a wireless Access Point (AP), the Mobile Terminal (MT) and the Access Point (AP) execute a two-way certificate authentication wherein a Mobile Terminal (MT) certificate and an Access Point (AP) certificate are transmitted to an Authentication Server (AS) through the Access Point (AP) and are authenticated through the Authentication Server (AS), then the authentication result of the Mobile Terminal (MT) certificate and the Access Point (AP) certificate are returned from the Authentication Server (AS) to the Access Point (AP) and the Mobile Terminal (MT) so that the Access Point (AP) obtains the authentication result of the Mobile Terminal (MT) and the Mobile Terminal (MT) obtains the authentication result of the Access Point (AP);

  • and the Mobile Terminal (MT) and the Access Point (AP) perform negotiation of secret key for conversation.

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