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Methods and apparatus for dynamic session key generation and rekeying in mobile IP

  • US 7,475,241 B2
  • Filed: 08/05/2003
  • Issued: 01/06/2009
  • Est. Priority Date: 11/22/2002
  • Status: Active Grant
First Claim
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1. In a server adapted for authentication, authorization, and accounting, a method of generating a shared key between a Home Agent and a Mobile Node, comprising:

  • receiving a request message by the server from a Home Agent, the request message identifying the Mobile Node;

    deriving key information by the server from a key or password associated with the Mobile Node; and

    sending a reply message by the server to the Home Agent, the reply message including the key information associated with the Mobile Node, thereby enabling the Home Agent to derive a shared key to be shared between the Mobile Node and the Home Agent from the key information;

    wherein the reply message does not include the shared key to be shared between the Mobile Node and the Home Agent in any form.

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