Data transmission systems

Details Data transmission systems Data transmission systems

1996-07-16

1999-03-30

Gregory, Bernarr E.

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 2, 380 49, 380 59, 375224, 370241, 370242, 371 201, 371 204, 371 48, 371 53, 371 671, H04L 900

Patent

active

058898646

ABSTRACT:
In a data transmission system in which a cyclic redundancy checksum value is derived in respect of each block of data bit values to be transmitted over the system, the checksum value in respect of blocks of data bit values intended for preselected ones only of the stations of the system is preloaded with a predetermined or netkey value to be used by the preselected stations such that only those stations can correctly decode the signals intended for them.

REFERENCES:
patent: 4168400 (1979-09-01), de Couasnon et al.
patent: 4885777 (1989-12-01), Takaragi et al.
patent: 4908828 (1990-03-01), Tikalsky
patent: 5208858 (1993-05-01), Vollert et al.
patent: 5343527 (1994-08-01), Moore
patent: 5465299 (1995-11-01), Matsumoto et al.
patent: 5613002 (1997-03-01), Kephart et al.
Data Communications, Computer Networks and Open Systems, Fred Halshall, Pub. 1992, pp. 379-396.

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