Paging message encryption

Details Paging message encryption Paging message encryption

1991-10-22

1994-02-01

Cangialosi, Salvatore

Cryptography

Key management

Having particular key generator

380 9, H04L 900

Patent

active

052838323

ABSTRACT:
A paging receiver (15) for receiving secure radio frequency (RF) communications comprises a receiver circuit (102) for receiving and demodulating a signal to obtain information. A memory device (108) is coupled to the receiver circuit (102) for storing the information. A de-encrypter (110) is coupled to the memory device (108) for de-encrypting the information and a decoder (112) is coupled to the de-encrypter (110) for decoding the de-encrypted information to derive a message. User input controls (120) selectably generate a user input signal. A controller (114) is coupled to the memory device (108) and the user input controls (120) for causing the memory device (108) to provide the information stored therein to the de-encrypter (110) in response to the user input signal being equivalent to a predetermined de-encryption signal.

REFERENCES:
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Motorola PMR 2000 Series POCSAG Alphanumeric Display Personal Message Receiver Instruction Manual (68P81048C80-A), pp. 2-4, 1987.

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