Method of generating an authentication

Details Method of generating an authentication Method of generating an authentication

2007-06-19

2007-06-19

Feild, Joseph (Department: 2617)

Telecommunications

Radiotelephone system

Emergency or alarm communication

C455S407000, C455S411000, C726S016000, C713S182000

Reexamination Certificate

active

10524260

ABSTRACT:
A method of generating an authentication for updating a mobile communications device's40location to a second communications device60is disclosed herein. The mobile communications device40is registered to a home network30comprising a proxy server but roams to a foreign network40with a different network number. The method proposes that, at the time of performing the location update, the second communications device and the proxy server each provides an input to a hash function to generate a shared secret; and using the shared secret as the authentication when the proxy server or the mobile communications device transmits the location update to the second communications device.

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Chapter 9 of the Publication, “Network Security—Private Communication in A Public World”, by Kaufman et al., published by PTR Prentice Hall, Englewoor Cliffs, NJ, 1995.

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