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Communications security

  • US 20060218398A1
  • Filed: 03/24/2005
  • Published: 09/28/2006
  • Est. Priority Date: 03/24/2005
  • Status: Active Grant
First Claim
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1. A method of authenticating a device'"'"'s access to a communications node, the method comprising:

  • generating by the communications node, a first value for use in derivation of a first encryption key, the first encryption key being at least partially used to authenticate the device'"'"'s access to the communications node in a first communications exchange;

    modifying by the communications node, independent of the device, the first value to create a second value; and

    using the second value, by the communication node, in authenticating the device'"'"'s access to the communications node in a second communications exchange.

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