Method and apparatus for efficient real-time authentication and

Details Method and apparatus for efficient real-time authentication and Method and apparatus for efficient real-time authentication and

1993-06-29

1995-10-03

Gregory, Bernarr E.

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 25, 380 34, 380 49, 375200, 455 331, 455 531, 455 541, 379 58, 379 59, H04L 932, H04B 169

Patent

active

054558638

ABSTRACT:
Radio frequency based cellular telecommunication systems often require both subscriber units and communication units of a fixed network communication system to maintain secret data which may be used to verify authenticity as well as provide encrypting variables for message encryption processes. An efficient real-time authentication method and apparatus are provided which use a single message to provide authentication and communication link setup information. Further, an authentication method and apparatus are provided which uses instant-specific information such as a time of day, radio frequency carrier frequency, a time slot number, a radio port number, access manager identifier, a radio port control unit identifier, or a base site controller identifier to enhance the reliability of the authentication process. Furthermore, a method and apparatus are provided for maintaining secure packet data communications through an encryption process by utilizing a packetized message encryption key and a unique packet number as encryption variables.

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