circomlib/circuits/sha256/sigmaplus.circom
2018-12-06 17:32:49 +01:00

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/*
Copyright 2018 0KIMS association.
This file is part of circom (Zero Knowledge Circuit Compiler).
circom is a free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
circom is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
License for more details.
You should have received a copy of the GNU General Public License
along with circom. If not, see <https://www.gnu.org/licenses/>.
*/
include "../binsum.circom"
include "sigma.circom"
template SigmaPlus() {
signal input in2[32];
signal input in7[32];
signal input in15[32];
signal input in16[32];
signal output out[32];
component sum = BinSum(32, 4);
component sigma1 = SmallSigma(17,19,10);
component sigma0 = SmallSigma(7, 18, 3);
for (var k=0; k<32; k++) {
sigma1.in[k] <== in2[k];
sigma0.in[k] <== in15[k];
sum.in[0][k] <== sigma1.out[k];
sum.in[1][k] <== in7[k];
sum.in[2][k] <== sigma0.out[k];
sum.in[3][k] <== in16[k];
out[k] <== sum.out[k];
}
}