Cryptography – Particular algorithmic function encoding – Nbs/des algorithm
Patent
1994-04-21
1996-04-16
Gregory, Bernarr E.
Cryptography
Particular algorithmic function encoding
Nbs/des algorithm
380 49, 327525, 34082531, 34082534, H04L 932
Patent
active
055090753
ABSTRACT:
A method for detecting unauthorized use of a communication unit in a secure wireless communication system includes receiving, by a central controller, a service request from the communication unit via the wireless communication system. The central controller determines whether the service request is requesting an unencrypted communication resource or an encrypted communication resource. When the service request is requesting an unencrypted communication resource, the central controller determines whether the service request substantially matches a historical utilization pattern. When the service request does not substantially match the historical utilization pattern, the central controller indicates that the communication unit is a potential unauthorized communication unit.
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Grube Gary W.
Lukasik Susan L.
Markison Timothy W.
Gregory Bernarr E.
Lukasik Susan L.
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