Scramble wireless communication system

Details Scramble wireless communication system Scramble wireless communication system

1997-06-27

1999-01-19

Cain, David C.

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 46, 380 49, H04K 100

Patent

active

058622217

ABSTRACT:
As for wireless communication lines between a master station and a plurality of remote stations, each remote station has a function F having an unitary variable which is known over all the stations and has two unique IDs, respectively. The master station is provided with a remote station ID memory circuit which outputs one ID of a remote station when the other ID of the remote station is input thereto, and a scrambler. carries out scrambling by using a fixed scramble vector VO during a setup sequence period and using a scramble vector VF set from a master station control circuit at the time of data transmission. A descrambler descrambles an input signal from the remote station by using the scramble vector VO during the setup sequence period and using a scramble vector VR set from the master station control circuit at the time of data transmission.

REFERENCES:
patent: 5325432 (1994-06-01), Gardeck et al.
patent: 5357571 (1994-10-01), Banwart
patent: 5381479 (1995-01-01), Gardeck et al.
patent: 5404404 (1995-04-01), Novorita
patent: 5442703 (1995-08-01), Kim et al.
patent: 5528691 (1996-06-01), Rosauer et al.
patent: 5557654 (1996-09-01), Maenpaa
patent: 5586185 (1996-12-01), Shibata et al.

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