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90 lines
2.6 KiB
90 lines
2.6 KiB
/*
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Copyright 2018 0KIMS association.
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This file is part of circom (Zero Knowledge Circuit Compiler).
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circom is a free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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circom is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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License for more details.
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You should have received a copy of the GNU General Public License
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along with circom. If not, see <https://www.gnu.org/licenses/>.
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*/
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include "constants.circom";
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include "sha256compression.circom";
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include "../bitify.circom"
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template Sha256_2() {
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signal input a;
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signal input b;
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signal output out;
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var i;
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var k;
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component bits2num = Bits2Num(216);
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component num2bits[2];
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num2bits[0] = Num2Bits(216);
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num2bits[1] = Num2Bits(216);
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num2bits[0].in <== a;
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num2bits[1].in <== b;
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component sha256compression = Sha256compression() ;
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component ha0 = H(0);
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component hb0 = H(1);
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component hc0 = H(2);
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component hd0 = H(3);
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component he0 = H(4);
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component hf0 = H(5);
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component hg0 = H(6);
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component hh0 = H(7);
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for (k=0; k<32; k++ ) {
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sha256compression.hin[0*32+k] <== ha0.out[k];
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sha256compression.hin[1*32+k] <== hb0.out[k];
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sha256compression.hin[2*32+k] <== hc0.out[k];
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sha256compression.hin[3*32+k] <== hd0.out[k];
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sha256compression.hin[4*32+k] <== he0.out[k];
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sha256compression.hin[5*32+k] <== hf0.out[k];
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sha256compression.hin[6*32+k] <== hg0.out[k];
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sha256compression.hin[7*32+k] <== hh0.out[k];
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}
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for (i=0; i<216; i++) {
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sha256compression.inp[i] <== num2bits[0].out[215-i];
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sha256compression.inp[i+216] <== num2bits[1].out[215-i];
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}
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sha256compression.inp[432] <== 1;
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for (i=433; i<503; i++) {
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sha256compression.inp[i] <== 0;
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}
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sha256compression.inp[503] <== 1;
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sha256compression.inp[504] <== 1;
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sha256compression.inp[505] <== 0;
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sha256compression.inp[506] <== 1;
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sha256compression.inp[507] <== 1;
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sha256compression.inp[508] <== 0;
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sha256compression.inp[509] <== 0;
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sha256compression.inp[510] <== 0;
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sha256compression.inp[511] <== 0;
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for (i=0; i<216; i++) {
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bits2num.in[i] <== sha256compression.out[255-i];
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}
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out <== bits2num.out;
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}
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