Statistically optimized bit permutations in interated block subs

Details Statistically optimized bit permutations in interated block subs Statistically optimized bit permutations in interated block subs

1997-07-07

1998-11-17

Tarcza, Thomas H.

Cryptography

Particular algorithmic function encoding

380 37, 380 42, H04L 928

Patent

active

058387960

ABSTRACT:
A method and apparatus for inter-round mixing in iterated block substitution systems is disclosed. The method involves optimizing inter-round mixing so that each data bit affects each other data bit in the same way. This is accomplished by applying a quick trickle permutation or a quasi quick trickle permutation to the data bits undergoing block substitution allocated to n individual substitution boxes.

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