Data integrity securing means

Details Data integrity securing means Data integrity securing means

1988-10-17

1991-09-03

Baker, Stephen M.

Excavating

371 371, H03M 1300

Patent

active

050460692

ABSTRACT:
A process for updating the frame check sequence FCS.sub.r (X) of a digital frame including an embedded variable header polynomial H.sub.r (x), said process including: partitioning H.sub.r (x); XORing the modified polynomial header H.sub.t (x) and previous polynomial header H.sub.r (x) to generate a differential polynomial D(x); computing a differential frame check polynomial sequence dFCS (x) on said D(x) only and adding dFCS (x) to the polynomial FCS.sub.r (x) to form a new FCS.sub.t (x).

REFERENCES:
patent: 4723244 (1988-02-01), Iacoponi
Madron, T., Local Area Networks-The Second Generation, John Wiley & Sons, 1988, pp. 166-172.
Patent Abstracts of Japan, vol. 7, No. 288, 22nd Dec. 1983.
Eurocon 77-European Conference on Electrotechnics, 3rd-7th May 1977, pp. 1.1.7.1-1.1.7.7.
Computer Design, vol. 18, No. 2, Feb. 1979, pp. 122-125.
IEEE Journal of Solid-State Circuits, vol. SC-15, No. 1, Feb. 1980, pp. 52-60.
IEEE Transactions on Power Apparatus and Systems, vol. PAS-103, No. 8, Aug. 1984, pp. 2058-2064.

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