Method and system for establishing secure connection between stations

  • US 8,831,227 B2
  • Filed: 05/21/2010
  • Issued: 09/09/2014
  • Est. Priority Date: 12/21/2009
  • Status: Active Grant
First Claim
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1. A method for establishing a security connection between stations, comprising:

  • 1) receiving, by a switch device, an inter-station key request packet sent by a first station,wherein the inter-station key request packet comprises a key announcement identifier KN1 field of the first station and a message identification code MIC1 field,wherein the value of the key announcement identifier KN1 field of the first station is an integral number and an initial value of that is a fixed value, and the value of the KN1 field is increased by 1 or a fixed value for use every time the inter-station key request is performed, andwherein the value of the message identification code MIC1 field is a hash value obtained by the first station performing hash function calculation on the fields in the inter-station key request packet other than the message identification code MIC1 field by using a protocol data key PDK1 in a unicast key shared with the switch device;

    2) generating, by the switch device, an inter-station key, constructing an inter-station key announcement packet, and sending the inter-station key announcement packet to a second station;

    3) receiving, by the switch device, an inter-station key announcement response packet sent by the second station;

    4) constructing, by the switch device, an inter-station key announcement packet and sending the inter-station key announcement packet to the first station; and

    5) receiving, by the switch device, an inter-station key announcement response packet sent by the first station.

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