tornado-nova/lib/mimc.js

const circomlib = require('circomlib')
const mimcsponge = circomlib.mimcsponge
const snarkjs = require('snarkjs')

const bigInt = snarkjs.bigInt

class MimcSpongeHasher {
  hash(level, left, right) {
    return mimcsponge.multiHash([bigInt(left), bigInt(right)]).toString()
  }

  hashArray(items) {
    return mimcsponge.multiHash(items.map(item => bigInt(item))).toString()
  }
}

module.exports = MimcSpongeHasher