Telegraphy – Systems – Printing
Patent
1964-10-06
1979-03-20
Birmiel, Howard A.
Telegraphy
Systems
Printing
179 15R, H04L 902
Patent
active
041455681
ABSTRACT:
Method and apparatus for ciphering and deciphering messages, wherein series of cipher pulses with an identical pulse distribution are generated by the transmitter and the receiver stations and said pulse distribution is determined by a secret basic code and a code which is derived from date and time.
Birmiel Howard A.
Gretag Aktiengesellschaft
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