Method and means for securing the distribution of encoding keys

Details Method and means for securing the distribution of encoding keys Method and means for securing the distribution of encoding keys

1979-05-21

1981-09-08

Birmiel, Howard A.

Telegraphy

Systems

Printing

235379, 235382, 340149R, 178 2209, H04L 900

Patent

active

042886597

ABSTRACT:
An improved secured data transmission system relies on the favorable comparison of coded signals derived from information about authorized individuals and particular data terminals that is both prestored and subsequently supplied under manual command in order to generate an operating key which is then used to encode and decode data that is entered after the initialization procedure.

REFERENCES:
patent: 3956615 (1976-05-01), Anderson
patent: 4123747 (1978-10-01), Lancto et al.
patent: 4186871 (1980-02-01), Anderson et al.
patent: 4193131 (1980-03-01), Lennon et al.
patent: 4203166 (1980-05-01), Ehrsam et al.

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