Cryptographic system by blocs of binery data

Details Cryptographic system by blocs of binery data Cryptographic system by blocs of binery data

1990-04-27

1991-04-23

Gangialosi, Salvatore

Cryptography

Particular algorithmic function encoding

H04L 906

Patent

active

050105736

ABSTRACT:
This system concerns essentially an encoding algorithm through a unit of non-revealed key data. The OUTPUT vector of the algorithm DLM is given by the sequence number vector ke*s modulo(2exp(n)-1) of a linear sequence generated by a shift register of n bits, with ke being the number composing the encoding key and s the sequence number of the INPUT vector in this linear sequence in relation to a certain origin. We perform a double application of the algorithm DLM, with the input vector of the second application given by the result of the arithmetic product modulo(2exp(n)-1) of the exit vector of the first application by the encrypting key. By using the conjugated key kd, the same procedure allows to restore the input vector (FIG. 1). The encrypting velocity is equal to a quarter of the clock frequency.

REFERENCES:
patent: 3691472 (1972-09-01), Bohman
patent: 4760598 (1988-07-01), Ferrell
patent: 4760600 (1988-07-01), Nakai
"Specifications for the Data Encryption Standard", NBS Fibs Pub 46, 17, 1/77, pp. 273-285.
A. M. Odlyzko, "Discrete Logarithms in Finite Fields and their Cryptographic Significance", Eurocrypt, 1984, pp. 224-266.
Whitfield Diffie et al., "New Directions in Cryptography", IEEE Trans. on Info. Theory, vol. IT.22, No. 6, Nov. 1976, pp. 644-654.
D. Coppersmith, "Fast Evaluation of Logarithms in Fields of Characteristic Two", IEEE Trans. on Info. Theory, vol. 1T-30, No. 4, Jul. 1984, pp. 587-594.
R. L. Rivest et al., "A Method for Obtaining Digital Signatures and Public-Key Cryptosystems", MIT/LSC/TM82, Apr., 1977, pp. 1-15.
F. Blake et al., "Computing Logarithms in Finite Fields of Characteristic Two", Siam J. Alg. Disc. Meth., vol. 5, No. 2, Jun., 1984.

Affiliated with

Also associated with

Rating

Cryptographic system by blocs of binery data does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Cryptographic system by blocs of binery data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cryptographic system by blocs of binery data will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1626603