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Rolling key resynchronization in cellular verification and validation system

  • US 5,241,598 A
  • Filed: 05/22/1991
  • Issued: 08/31/1993
  • Est. Priority Date: 05/22/1991
  • Status: Expired due to Term
First Claim
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1. In a radio network providing service to a mobile station, a method for the resynchronization of a rolling key used as an input value among a plurality of input values to an authentication processor in each of said network and said mobile station, said method comprising the steps of:

  • setting said network rolling key input value to a selected value;

    commanding said mobile station to set said mobile station rolling key input value to said selected value; and

    setting said mobile station rolling key input value to said selected value in response to said command.

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