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20 lines
863 B
JavaScript
20 lines
863 B
JavaScript
const snarkjs = require("snarkjs");
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const groth = snarkjs["groth"];
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const crypto = require("crypto");
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const circomlib = require('circomlib');
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const pedersen = circomlib.pedersenHash;
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const babyjub = circomlib.babyJub;
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const websnarkUtils = require('websnark/src/utils');
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const unstringifyBigInts2 = require("snarkjs/src/stringifybigint").unstringifyBigInts;
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const rbigint = (nbytes) => snarkjs.bigInt.leBuff2int(crypto.randomBytes(nbytes));
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const pedersenHash = (data) => babyjub.unpackPoint(pedersen.hash(data))[0];
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async function snarkVerify(proof) {
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proof = unstringifyBigInts2(websnarkUtils.fromSolidityInput(proof));
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const verification_key = unstringifyBigInts2(require('../build/circuits/withdraw_verification_key.json'));
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return groth.isValid(verification_key, proof, proof.publicSignals);
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}
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module.exports = {rbigint, pedersenHash, snarkVerify};
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