Apparatus and method for generating a secure substitution-box im

Details Apparatus and method for generating a secure substitution-box im Apparatus and method for generating a secure substitution-box im

1996-12-26

1998-08-18

Gregory, Bernarr E.

Cryptography

Particular algorithmic function encoding

380 1, 380 9, 380 29, 380 37, 380 43, 380 49, H04L 906, H04L 928, H04L 900

Patent

active

057968373

ABSTRACT:
The apparatus for generating a secure substitution-box immune to differential and linear cryptanalysises comprises a preprocessor for exchanging a location by the unit of bit while passing the input of 64 bits data to be protected; a parity checker for obtaining 56 bits key information by passing the input of the 64 bits key by byte unit; a key expander for repetitive operation for generating 48 bits information upon receiving the key information; a first to sixteenth operating portion for performing the 16 times of operation for one data from the preprocessor while mixing the data with an expanding key information from the key expander; and a postprocessor for generating an output signal of 64 bits data upon receiving an operated result from the first to sixteenth operating portion.

REFERENCES:
patent: 3958081 (1976-05-01), Ehrsam et al.
patent: 3962539 (1976-06-01), Ehrsam et al.
patent: 4275265 (1981-06-01), Davida et al.
patent: 5231662 (1993-07-01), Van Rumpt et al.
patent: 5237611 (1993-08-01), Rasmussen et al.
patent: 5317638 (1994-05-01), Kao et al.
patent: 5473693 (1995-12-01), Sprunk
patent: 5511123 (1996-04-01), Adams

Affiliated with

Also associated with

Rating

Apparatus and method for generating a secure substitution-box im does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus and method for generating a secure substitution-box im, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for generating a secure substitution-box im will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1123038