%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Copyright: 2010 Integrated Sytems Laboratory, ETH Zurich
%%            http://www.iis.ee.ethz.ch/~sha3
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
function [s] = s1(x)
    a = [0 x(1:31)];
    b = [x(3:32) zeros(1,2)];
    c = circshift(x,[0 -8]);
    d = circshift(x,[0 -23]);
    s = xor(xor(a,b),xor(c,d));

Generated on Fri Sep 24 10:39:12 CEST 2010
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