FEAL
In cryptography, FEAL (the Fast data Encipherment ALgorithm) is a block cipher proposed as an alternative to the Data Encryption Standard (DES), and designed to be much faster in software. The Feistel based algorithm was first published in 1987 by Akihiro Shimizu and Shoji Miyaguchi from NTT. The cipher is susceptible to various forms of cryptanalysis, and has acted as a catalyst in the discovery of differential and linear cryptanalysis.
There have been several different revisions of FEAL, though all are Feistel ciphers, and make use of the same basic round function and operate on a 64-bit block. One of the earliest designs is now termed FEAL-4, which has four rounds and a 64-bit key.
Problems were found with FEAL-4 from the start: Bert den Boer related a weakness in an unpublished rump session at the same conference where the cipher was first presented. A later paper (den Boer, 1988) describes an attack requiring 100–10000 chosen plaintexts, and Sean Murphy (1990) found an improvement that needs only 20 chosen plaintexts. Murphy and den Boer's methods contain elements similar to those used in differential cryptanalysis.
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LUCK
by: FuelIt's cold outside in the middle of the winter and my brain's in the fridge
(Would you know what shape I'm in)
Point things in the better I'm lucky if I even give in to the sin
(Would you know what shape I'm in)
And it's all been luck until now
Caught in the race of up to down
Photography mixed in the monogamy keepin' my world happenin'
(would you know what shape I'm in)
I know that I'm better when I know that you are better and I'll hold you again
(would you know what shape I'm in)
And its all been luck until now
Caught in the race of up to down
And it's all been luck until now
I only hope that you're still 'round me now
And it's gonna rage
it's gonna stay with you always
Every second counts on you to prove you're off the ground
It's cold outside in the middle of the winter and my brains in the fridge
Point things in the better I'm lucky if I even give in to the sin
And its all been luck until now
And its all been luck until now
And its all been luck until now
Caught in the race of up to down now
And its all been luck until now
Caught in the race of up to down
And it's all been luck until now
I only hope that you're still 'round me