Stream cipher operation using public key cryptosystem

Details Stream cipher operation using public key cryptosystem Stream cipher operation using public key cryptosystem

1981-10-13

1984-09-11

Cangialosi, Sal

Telegraphy

Systems

Printing

178 2213, 178 2215, H04L 904

Patent

active

044711646

ABSTRACT:
In stream cipher operation (FIG. 1), a public key cryptographic system employs a filter (21, 22, 31, 32, 33) to alter each sequence (S.sub.i) input to the encryption devices (FIGS. 2 and 3) at the transmitter and the receiver of the system. Characteristics of the filter are known only to the sender and authorized receivers.

REFERENCES:
patent: 4200770 (1980-04-01), Hellman et al.
patent: 4218582 (1980-08-01), Hellman et al.
patent: 4316055 (1982-02-01), Feistel

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