circomlib/circuits/aliascheck.circom

/*
    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 "compconstant.circom";


template AliasCheck() {
    signal input in[254];

    component  compConstant = CompConstant(-1);

    for (var i=0; i<254; i++) in[i] ==> compConstant.in[i];

    compConstant.out === 0;
}

template AliasCheckBabyJub() {
    signal input in[251];
    signal input enabled;

    component  compConstant = CompConstant(2736030358979909402780800718157159386076813972158567259200215660948447373040);

    for (var i=0; i<251; i++) in[i] ==> compConstant.in[i];
    for (var i=0; i<3; i++) 0 ==> compConstant.in[251+i];

    compConstant.out*enabled === 0;
}