Cryptography – Particular algorithmic function encoding
Patent
1985-11-12
1989-01-10
Cangialosi, Salvatore
Cryptography
Particular algorithmic function encoding
380 30, 380 44, 380 46, H04K 100, H04K 900
Patent
active
047979216
ABSTRACT:
A system for enciphering or deciphering wherein bit patterns in a binary number notation of a plurality of elements, which an irreducible polynomial in the Galois field GF (2.sup.i) has, are stored in registers arranged in a certain correspondence with the bit positions of input data or messages, as random numbers for an encryption key or decryption key. The bit patterns retained in the registers corresponding to the digit of bit "1" in the input data are subjected to a mod 2 addition operation independently for each digit of the random numbers, to thereby obtain encipher or decipher data corresponding to the input data. The elements to be used for the encipher and decipher keys have a specific relationship therebetween in conformity with the periodical characteristic of the elements the irreducible polynomial has.
REFERENCES:
patent: 3535642 (1970-10-01), Perlman
patent: 3681708 (1972-08-01), Olmstead
patent: 3691472 (1972-09-01), Bohman
patent: 3838259 (1974-09-01), Kortenhaus
patent: 3911216 (1975-10-01), Bartek et al.
patent: 4165444 (1979-08-01), Gordon
patent: 4520232 (1985-05-01), Wilson
Webster's Ninth New Collegiate Dictionary; (1984), p. 639; Merriam-Webster, Inc.
"Cryptography and Data Security", by Dorothy Elizabeth Denning, Copyright 1982.
Cangialosi Salvatore
Gregory Bernarr Earl
Hitachi , Ltd.
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