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