1/*
 2    Copyright 2018 0KIMS association.
 3
 4    This file is part of circom (Zero Knowledge Circuit Compiler).
 5
 6    circom is a free software: you can redistribute it and/or modify it
 7    under the terms of the GNU General Public License as published by
 8    the Free Software Foundation, either version 3 of the License, or
 9    (at your option) any later version.
10
11    circom is distributed in the hope that it will be useful, but WITHOUT
12    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
13    or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
14    License for more details.
15
16    You should have received a copy of the GNU General Public License
17    along with circom. If not, see <https://www.gnu.org/licenses/>.
18*/
19pragma circom 2.0.0;
20
21include "../binsum.circom";
22include "sigma.circom";
23
24template SigmaPlus() {
25    signal input in2[32];
26    signal input in7[32];
27    signal input in15[32];
28    signal input in16[32];
29    signal output out[32];
30    var k;
31
32    component sigma1 = SmallSigma(17,19,10);
33    component sigma0 = SmallSigma(7, 18, 3);
34    for (k=0; k<32; k++) {
35        sigma1.in[k] <== in2[k];
36        sigma0.in[k] <== in15[k];
37    }
38
39    component sum = BinSum(32, 4);
40    for (k=0; k<32; k++) {
41        sum.in[0][k] <== sigma1.out[k];
42        sum.in[1][k] <== in7[k];
43        sum.in[2][k] <== sigma0.out[k];
44        sum.in[3][k] <== in16[k];
45    }
46
47    for (k=0; k<32; k++) {
48        out[k] <== sum.out[k];
49    }
50}