Design principles of the shade cipher

Details Design principles of the shade cipher Design principles of the shade cipher

1997-10-24

1999-09-07

Cain, David

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 37, H04K 100

Patent

active

059498846

ABSTRACT:
A method of encrypting or decrypting an input message block of binary data of predetermined length 2n into an output message block by dividing the message block into two equal size halves, performing one or more transformation rounds on the message block halves, each transformation round further comprising the steps of determining a key, processing the first half data block using a hash function to obtain a modified first half data block of length n, and combining the modified first half data block with the second half data block to obtain a modified second half data block of length n; and, lastly, appending the first modified half data block to the second modified half data block to obtain the output message block.

REFERENCES:
patent: 5054067 (1991-10-01), Moroney et al.
patent: 5511123 (1996-04-01), Adams
patent: 5606616 (1997-02-01), Sprunk et al.
patent: 5608801 (1997-03-01), Aiello et al.
patent: 5664016 (1997-09-01), Preneel et al.
patent: 5673318 (1997-09-01), Bellare et al.
E. Biham, How to Forge DES-Encrypted Messages in 2.sup.28 Steps, Technical Report CS 884, Department of Computer Science, Technion, Haifa, Israel, Aug., 1996 (also available at http://www.cs.technion.ac.il/.about.biham/publications.html).
M. Luby and C. Rackoff, How to Construct Pseudorandom Permutations From Pseudorandom Functions, SIAM Journal of Computing, vol. 17 #2, Apr., 1988, pp. 373-386.
U. Maurer, A Simplified and Generalized Treatment of Luby-Rackoff Pseudorandom Permutation Generators, in Advances in Cryptology: Proceedings of Eurocrypt 92, Springer, 1993, pp. 239-255.

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