forked from tornado-packages/archive-monorepo
75 lines
2.1 KiB
Plaintext
75 lines
2.1 KiB
Plaintext
/*
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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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template MultiMux3(n) {
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signal input c[n][8]; // Constants
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signal input s[3]; // Selector
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signal output out[n];
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signal a210[n];
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signal a21[n];
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signal a20[n];
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signal a2[n];
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signal a10[n];
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signal a1[n];
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signal a0[n];
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signal a[n];
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// 4 constrains for the intermediary variables
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signal s10;
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s10 <== s[1] * s[0];
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for (var i=0; i<n; i++) {
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a210[i] <== ( c[i][ 7]-c[i][ 6]-c[i][ 5]+c[i][ 4] - c[i][ 3]+c[i][ 2]+c[i][ 1]-c[i][ 0] ) * s10;
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a21[i] <== ( c[i][ 6]-c[i][ 4]-c[i][ 2]+c[i][ 0] ) * s[1];
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a20[i] <== ( c[i][ 5]-c[i][ 4]-c[i][ 1]+c[i][ 0] ) * s[0];
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a2[i] <== ( c[i][ 4]-c[i][ 0] );
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a10[i] <== ( c[i][ 3]-c[i][ 2]-c[i][ 1]+c[i][ 0] ) * s10;
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a1[i] <== ( c[i][ 2]-c[i][ 0] ) * s[1];
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a0[i] <== ( c[i][ 1]-c[i][ 0] ) * s[0];
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a[i] <== ( c[i][ 0] )
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out[i] <== ( a210[i] + a21[i] + a20[i] + a2[i] ) * s[2] +
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( a10[i] + a1[i] + a0[i] + a[i] );
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}
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}
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template Mux3() {
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var i;
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signal input c[8]; // Constants
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signal input s[3]; // Selector
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signal output out;
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component mux = MultiMux3(1);
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for (i=0; i<8; i++) {
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mux.c[0][i] <== c[i];
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}
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for (i=0; i<3; i++) {
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s[i] ==> mux.s[i];
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}
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mux.out[0] ==> out;
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}
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