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tarcieri/rc4_golf.rb

Forked from anonymous/rc4_golf.rb
Created October 22, 2014 22:13
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rc4_golf.rb
m=255
r=(0..256)
j=0
Sk=r.to_a.map{|i|j=(j+S[i]+K[i%16])&m}
St=[]
i=j=0
r.each{|i|
i&=m
j=(j+S[i])&m
S[i],S[j]=S[j],S[i]
St<<S[(S[i]+S[j])&m]
}
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