Cryptography – Cryptanalysis
Patent
1962-03-27
1996-02-20
Gregory, Bernarr E.
Cryptography
Cryptanalysis
375200, 375218, 367134, 380 34, 380 46, 380 59, H04K 102
Patent
active
054936128
ABSTRACT:
The secure communication keying system has a noise generator whose output a predetermined finite band of noise within, for example, the zero to eleven hundred cycle per second range. The noise generator may be a pseudorandom noise generator that is synchronized with a given clock frequency. The output of the system may have noise-like characteristics, but it is encoded with any type of intelligence desired to be transmitted. The output signals simulate the ambient noise occurring within the communication medium and has the same frequency spectrum regardless of the frequency of the modulating signals supplied thereto.
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Isaak Robert D.
Klund William E.
Littrell Woodrow H.
Stephenson Richard G.
Connors, Jr. Edward J.
Dobyns Kenneth W.
Gregory Bernarr E.
The United States of America as represented by the Secretary of
Townsend William C.
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