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3×
| // SPDX-License-Identifier: GPL-3.0
/*
Copyright 2021 0KIMS association.
This file is generated with [snarkJS](https://github.com/iden3/snarkjs).
snarkJS 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.
snarkJS 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 snarkJS. If not, see <https://www.gnu.org/licenses/>.
*/
pragma solidity >=0.7.0 <0.9.0;
contract Groth16Verifier {
// Scalar field size
uint256 constant r = 21888242871839275222246405745257275088548364400416034343698204186575808495617;
// Base field size
uint256 constant q = 21888242871839275222246405745257275088696311157297823662689037894645226208583;
// Verification Key data
uint256 constant alphax = 13107290380154181775932389224182069578958704359609208285388840391968280295342;
uint256 constant alphay = 9484483495940647349518892948807864800711049141935764397474173560076127534058;
uint256 constant betax1 = 17123502368440839454625522146137454055150539394075688578872143959930050386987;
uint256 constant betax2 = 18683692064844742623262377297864378715127115541674987712091450834209838587952;
uint256 constant betay1 = 8203736733343170051142780987840908556319288444398332760019178388216785733972;
uint256 constant betay2 = 15952264932889423452920300095322868224910774455523175368601827269719664711223;
uint256 constant gammax1 = 11559732032986387107991004021392285783925812861821192530917403151452391805634;
uint256 constant gammax2 = 10857046999023057135944570762232829481370756359578518086990519993285655852781;
uint256 constant gammay1 = 4082367875863433681332203403145435568316851327593401208105741076214120093531;
uint256 constant gammay2 = 8495653923123431417604973247489272438418190587263600148770280649306958101930;
uint256 constant deltax1 = 5167487581831034256820456571508248506092052194863166756380949583195475414709;
uint256 constant deltax2 = 2699678693452768588060345545776436745981057571381284345494159235915521467840;
uint256 constant deltay1 = 4509936585434281573968870884284761348119413084916050841570544537303872716142;
uint256 constant deltay2 = 11813057670459563023394783075264216202411868301165553729311205547642315153916;
uint256 constant IC0x = 14148887804327275129786572318768332468680753287519511645794326635805971339579;
uint256 constant IC0y = 15511514365727074811496047865635345240711024085094665661132886447198668288089;
uint256 constant IC1x = 13649019881328025093027973410430708472013825939627030975143659310153460467030;
uint256 constant IC1y = 10596969315078644054214265022059688949122567509024213600113608854014041289281;
uint256 constant IC2x = 14672977594699472708790204060233245870494507038879427730541374673782184558479;
uint256 constant IC2y = 11380443747385973849203136333087437771378629730517916388332119049051900916185;
// Memory data
uint16 constant pVk = 0;
uint16 constant pPairing = 128;
uint16 constant pLastMem = 896;
function verifyProof(uint[2] calldata _pA, uint[2][2] calldata _pB, uint[2] calldata _pC, uint[2] calldata _pubSignals) public view returns (bool) {
assembly {
function checkField(v) {
if iszero(lt(v, q)) {
mstore(0, 0)
return(0, 0x20)
}
}
// G1 function to multiply a G1 value(x,y) to value in an address
function g1_mulAccC(pR, x, y, s) {
let success
let mIn := mload(0x40)
mstore(mIn, x)
mstore(add(mIn, 32), y)
mstore(add(mIn, 64), s)
success := staticcall(sub(gas(), 2000), 7, mIn, 96, mIn, 64)
if iszero(success) {
mstore(0, 0)
return(0, 0x20)
}
mstore(add(mIn, 64), mload(pR))
mstore(add(mIn, 96), mload(add(pR, 32)))
success := staticcall(sub(gas(), 2000), 6, mIn, 128, pR, 64)
if iszero(success) {
mstore(0, 0)
return(0, 0x20)
}
}
function checkPairing(pA, pB, pC, pubSignals, pMem) -> isOk {
let _pPairing := add(pMem, pPairing)
let _pVk := add(pMem, pVk)
mstore(_pVk, IC0x)
mstore(add(_pVk, 32), IC0y)
// Compute the linear combination vk_x
g1_mulAccC(_pVk, IC1x, IC1y, calldataload(add(pubSignals, 0)))
g1_mulAccC(_pVk, IC2x, IC2y, calldataload(add(pubSignals, 32)))
// -A
mstore(_pPairing, calldataload(pA))
mstore(add(_pPairing, 32), mod(sub(q, calldataload(add(pA, 32))), q))
// B
mstore(add(_pPairing, 64), calldataload(pB))
mstore(add(_pPairing, 96), calldataload(add(pB, 32)))
mstore(add(_pPairing, 128), calldataload(add(pB, 64)))
mstore(add(_pPairing, 160), calldataload(add(pB, 96)))
// alpha1
mstore(add(_pPairing, 192), alphax)
mstore(add(_pPairing, 224), alphay)
// beta2
mstore(add(_pPairing, 256), betax1)
mstore(add(_pPairing, 288), betax2)
mstore(add(_pPairing, 320), betay1)
mstore(add(_pPairing, 352), betay2)
// vk_x
mstore(add(_pPairing, 384), mload(add(pMem, pVk)))
mstore(add(_pPairing, 416), mload(add(pMem, add(pVk, 32))))
// gamma2
mstore(add(_pPairing, 448), gammax1)
mstore(add(_pPairing, 480), gammax2)
mstore(add(_pPairing, 512), gammay1)
mstore(add(_pPairing, 544), gammay2)
// C
mstore(add(_pPairing, 576), calldataload(pC))
mstore(add(_pPairing, 608), calldataload(add(pC, 32)))
// delta2
mstore(add(_pPairing, 640), deltax1)
mstore(add(_pPairing, 672), deltax2)
mstore(add(_pPairing, 704), deltay1)
mstore(add(_pPairing, 736), deltay2)
let success := staticcall(sub(gas(), 2000), 8, _pPairing, 768, _pPairing, 0x20)
isOk := and(success, mload(_pPairing))
}
let pMem := mload(0x40)
mstore(0x40, add(pMem, pLastMem))
// Validate that all evaluations ∈ F
checkField(calldataload(add(_pubSignals, 0)))
checkField(calldataload(add(_pubSignals, 32)))
checkField(calldataload(add(_pubSignals, 64)))
// Validate all evaluations
let isValid := checkPairing(_pA, _pB, _pC, _pubSignals, pMem)
mstore(0, isValid)
return(0, 0x20)
}
}
}
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