Fast real-time public key cryptography

Details Fast real-time public key cryptography Fast real-time public key cryptography

1981-02-09

1983-08-16

Cangialosi, Sal

Telegraphy

Systems

Printing

178 2213, H04K 102, G09C 106

Patent

active

043993230

ABSTRACT:
In a public key cryptographic system (FIG. 1) for communicating securely over an insecure communication channel (3), a sender (1, 2) enciphers a data message (D) using a public enciphering knapsack key (H) to generate an enciphered message (S.sub.H). An authorized receiver (4 6, 7, 20, 21, 22) with knowledge of a private deciphering key (E), a modulus (M) and an integer multiplier (W) generates a private enciphering key (A) which is employed in further enciphering the received enciphered message to form a doubly enciphered message (S.sub.E, S.sub.E). The doubly enciphered message is deciphered using the private deciphering key alone to recover the original data message.

REFERENCES:
patent: 3958081 (1976-05-01), Ehrsam et al.
patent: 4218582 (1980-08-01), Hellman et al.
patent: 4316055 (1982-02-01), Feistel
Hellman, M. E. "The Mathematics of Public-Key Gryptography" Scientific American, vol. 241, No. 2, (Aug. 1979) pp. 146-157.

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