Integrity protection method for radio network signaling

  • US 7,246,242 B1
  • Filed: 05/11/2000
  • Issued: 07/17/2007
  • Est. Priority Date: 05/11/1999
  • Status: Expired due to Term
First Claim
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1. A method for checking integrity of messages transmitted during a connection between a first party and a second party, comprising:

  • specifying a first value at the first party, a second value at least partly at the first party and a count value at least partly at the second party to calculate an authentication value of a message, the first value being valid for one connection between the first party and the second party only;

    transmitting the message and calculated authentication value from the first party to the second party;

    calculating a second authentication value at the second party based on the received message;

    comparing the calculated authentication value with the second authentication value to determine whether the authentication values match;

    accepting the message if the authentication values match;

    wherein the authentication values are calculated based on the message, the first value specified by the first party and the counter value at least partly specified by the second party.

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