for i =0:255 s(i+1)=i;end j=0; for i=0:255 j=(j+s(i+1)+key(mod([i,8],256))); s([(i+1),j])=s([j,(i+1)]); end
while i am trying to execute this code i am getting the error undefined keyword key for double. please tell me the way to resolve it
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