2018-12-16 13:27:29 +03:00
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/*
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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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2018-12-15 11:00:35 +03:00
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/******
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SMTVerifierLevel
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This circuit has 1 hash
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Outputs according to the state.
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State root
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===== =======
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top H'(child, sibling)
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i0 0
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iold old1leaf
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inew new1leaf
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na 0
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H' is the Hash function with the inputs shifted acordingly.
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*****/
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template SMTVerifierLevel() {
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signal input st_top;
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signal input st_i0;
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signal input st_iold;
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signal input st_inew;
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signal input st_na;
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signal output root;
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signal input sibling;
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signal input old1leaf;
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signal input new1leaf;
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signal input lrbit;
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signal input child;
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signal aux[2];
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component proofHash = SMTHash2();
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component switcher = Switcher();
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switcher.L <== child;
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switcher.R <== sibling;
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switcher.sel <== lrbit;
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proofHash.L <== switcher.outL;
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proofHash.R <== switcher.outR;
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aux[0] <== proofHash.out * st_top;
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aux[1] <== old1leaf*st_iold;
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root <== aux[0] + aux[1] + new1leaf*st_inew;
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}
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