Substitution permutation enciphering device

Details Substitution permutation enciphering device Substitution permutation enciphering device

1986-05-14

1988-06-14

Buczinski, Stephen C.

Cryptography

Communication system using cryptography

Data stream/substitution enciphering

380 37, 380 45, 380 50, H04L 902

Patent

active

047517336

ABSTRACT:
A substitution-permutation enciphering device.
This device, adapted for transforming a binary word into another binary word, by a succession of substitutions and permutations, under the control of a key, is such that the substitution operations are performed by means of programmable or reprogrammable memories addressed by all or part of the word to undergo substitution, and by all or part of the key or of the parts of the key applied successively.

REFERENCES:
patent: 4058673 (1977-11-01), Johansson
patent: 4157454 (1979-06-01), Becker
patent: 4275265 (1981-06-01), Davida et al.
patent: 4304962 (1981-12-01), Fracassi et al.
patent: 4408093 (1983-10-01), Place
patent: 4447672 (1984-05-01), Nakamura
patent: 4465153 (1984-08-01), van de Pas et al.
patent: 4638120 (1987-01-01), Herve
Diffie, W. et al., "Privacy and Authentication: An Introduction to Cryptography,: Proceedings of the IEEE, vol. 67, No. 3, Mar. 1979, pp. 397-427.

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