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contracts/passport/verifiers2/ukr/PUKRECDSABrainpool256Verifier2.sol
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// 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/>. | ||
*/ | ||
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pragma solidity >=0.7.0 <0.9.0; | ||
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contract PUKRECDSABrainpool256Verifier2 { | ||
// Scalar field size | ||
uint256 constant r = | ||
21888242871839275222246405745257275088548364400416034343698204186575808495617; | ||
// Base field size | ||
uint256 constant q = | ||
21888242871839275222246405745257275088696311157297823662689037894645226208583; | ||
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// Verification Key data | ||
uint256 constant alphax = | ||
20491192805390485299153009773594534940189261866228447918068658471970481763042; | ||
uint256 constant alphay = | ||
9383485363053290200918347156157836566562967994039712273449902621266178545958; | ||
uint256 constant betax1 = | ||
4252822878758300859123897981450591353533073413197771768651442665752259397132; | ||
uint256 constant betax2 = | ||
6375614351688725206403948262868962793625744043794305715222011528459656738731; | ||
uint256 constant betay1 = | ||
21847035105528745403288232691147584728191162732299865338377159692350059136679; | ||
uint256 constant betay2 = | ||
10505242626370262277552901082094356697409835680220590971873171140371331206856; | ||
uint256 constant gammax1 = | ||
11559732032986387107991004021392285783925812861821192530917403151452391805634; | ||
uint256 constant gammax2 = | ||
10857046999023057135944570762232829481370756359578518086990519993285655852781; | ||
uint256 constant gammay1 = | ||
4082367875863433681332203403145435568316851327593401208105741076214120093531; | ||
uint256 constant gammay2 = | ||
8495653923123431417604973247489272438418190587263600148770280649306958101930; | ||
uint256 constant deltax1 = | ||
17648214234331957568330960957431498544435101565910880115570722598320265006571; | ||
uint256 constant deltax2 = | ||
1377972305104844376387599205844979928840838786046793361825321730630934362959; | ||
uint256 constant deltay1 = | ||
2077816914261812197050368998616279328991484916205907994635778419662553645477; | ||
uint256 constant deltay2 = | ||
2206289321184310538510887385465087836163090981404797579272381439458278590108; | ||
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uint256 constant IC0x = | ||
18620266600276641562820981570212476034197495789902029506640735641849992291769; | ||
uint256 constant IC0y = | ||
19180656759806716198038875169019531739979112910755771923690114773726221215288; | ||
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uint256 constant IC1x = | ||
272955953602785972907203424364571796460055637613382016500922878551440008739; | ||
uint256 constant IC1y = | ||
5276638731998402720315200280007489042508900143842986105052170133990433041996; | ||
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// Memory data | ||
uint16 constant pVk = 0; | ||
uint16 constant pPairing = 128; | ||
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uint16 constant pLastMem = 896; | ||
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function verifyProof( | ||
uint[2] calldata _pA, | ||
uint[2][2] calldata _pB, | ||
uint[2] calldata _pC, | ||
uint[1] calldata _pubSignals | ||
) public view returns (bool) { | ||
assembly { | ||
function checkField(v) { | ||
if iszero(lt(v, q)) { | ||
mstore(0, 0) | ||
return(0, 0x20) | ||
} | ||
} | ||
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// 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) | ||
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success := staticcall(sub(gas(), 2000), 7, mIn, 96, mIn, 64) | ||
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if iszero(success) { | ||
mstore(0, 0) | ||
return(0, 0x20) | ||
} | ||
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mstore(add(mIn, 64), mload(pR)) | ||
mstore(add(mIn, 96), mload(add(pR, 32))) | ||
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success := staticcall(sub(gas(), 2000), 6, mIn, 128, pR, 64) | ||
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if iszero(success) { | ||
mstore(0, 0) | ||
return(0, 0x20) | ||
} | ||
} | ||
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function checkPairing(pA, pB, pC, pubSignals, pMem) -> isOk { | ||
let _pPairing := add(pMem, pPairing) | ||
let _pVk := add(pMem, pVk) | ||
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mstore(_pVk, IC0x) | ||
mstore(add(_pVk, 32), IC0y) | ||
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// Compute the linear combination vk_x | ||
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g1_mulAccC(_pVk, IC1x, IC1y, calldataload(add(pubSignals, 0))) | ||
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// -A | ||
mstore(_pPairing, calldataload(pA)) | ||
mstore(add(_pPairing, 32), mod(sub(q, calldataload(add(pA, 32))), q)) | ||
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// 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))) | ||
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// alpha1 | ||
mstore(add(_pPairing, 192), alphax) | ||
mstore(add(_pPairing, 224), alphay) | ||
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// beta2 | ||
mstore(add(_pPairing, 256), betax1) | ||
mstore(add(_pPairing, 288), betax2) | ||
mstore(add(_pPairing, 320), betay1) | ||
mstore(add(_pPairing, 352), betay2) | ||
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// vk_x | ||
mstore(add(_pPairing, 384), mload(add(pMem, pVk))) | ||
mstore(add(_pPairing, 416), mload(add(pMem, add(pVk, 32)))) | ||
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// gamma2 | ||
mstore(add(_pPairing, 448), gammax1) | ||
mstore(add(_pPairing, 480), gammax2) | ||
mstore(add(_pPairing, 512), gammay1) | ||
mstore(add(_pPairing, 544), gammay2) | ||
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// C | ||
mstore(add(_pPairing, 576), calldataload(pC)) | ||
mstore(add(_pPairing, 608), calldataload(add(pC, 32))) | ||
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// delta2 | ||
mstore(add(_pPairing, 640), deltax1) | ||
mstore(add(_pPairing, 672), deltax2) | ||
mstore(add(_pPairing, 704), deltay1) | ||
mstore(add(_pPairing, 736), deltay2) | ||
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let success := staticcall(sub(gas(), 2000), 8, _pPairing, 768, _pPairing, 0x20) | ||
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isOk := and(success, mload(_pPairing)) | ||
} | ||
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let pMem := mload(0x40) | ||
mstore(0x40, add(pMem, pLastMem)) | ||
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// Validate that all evaluations ∈ F | ||
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checkField(calldataload(add(_pubSignals, 0))) | ||
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checkField(calldataload(add(_pubSignals, 32))) | ||
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// Validate all evaluations | ||
let isValid := checkPairing(_pA, _pB, _pC, _pubSignals, pMem) | ||
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mstore(0, isValid) | ||
return(0, 0x20) | ||
} | ||
} | ||
} |
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