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Method and apparatus for securing communication between a mobile node and a network

  • US 8,296,558 B1
  • Filed: 11/26/2003
  • Issued: 10/23/2012
  • Est. Priority Date: 11/26/2003
  • Status: Active Grant
First Claim
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1. A method of securely negotiating a session key between a mobile node and a router in a network, the method comprising:

  • initiating a communication session between the mobile node and the router using a protocol, including a process of registering or authenticating the mobile node within the network using the protocol;

    receiving from the router a public key within a first protocol message, the first protocol message having a format defined by the protocol, wherein the first protocol message is a protocol vendor specific packet including the public key;

    obtaining the session key;

    generating an encrypted session key from the session key; and

    during the process of registering or authenticating the mobile node, communicating the encrypted session key to the router within a second protocol message, the second protocol message having a format defined by the protocol, wherein the second protocol message is an initial request (RRQ) message including the encrypted session key.

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