Encrypton system for digital cellular communications

Details Encrypton system for digital cellular communications Encrypton system for digital cellular communications

1991-05-31

1992-09-15

Swann, Tod

Cryptography

Key management

Having particular key generator

380 28, 380 49, 380 50, H04L 902

Patent

active

051484854

ABSTRACT:
A system for generating a pseudo-random bit sequence which may be used in enciphering digital data prior to transmission or storage of the data. The bit sequence is generated by expanding a plurality of secret key bits in a manner suitable for implementation with a conventional microprocessor arithmetic logic unit (ALU). The system of the present invention may be used, for example, to secure voice or data communications between a base station and a mobile station in a digital cellular communications system.

REFERENCES:
patent: 4316055 (1982-02-01), Feistel
patent: 4811377 (1989-03-01), Krolopp et al.
patent: 4860353 (1989-08-01), Brown
patent: 4876740 (1989-10-01), Levine et al.
patent: 5008935 (1991-04-01), Roberts

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