tornado-core/lib/utils.js
2021-03-12 15:15:52 +04:00

29 lines
682 B
JavaScript

const MiMC = require('./MiMC')
const snarkjs = require('snarkjs')
const hasher = new MiMC()
const bigInt = snarkjs.bigInt
const toHex = (number, length = 32) =>
'0x' +
(number instanceof Buffer ? number.toString('hex') : bigInt(number).toString(16)).padStart(length * 2, '0')
function zeros(
levels,
defaultZero = '21663839004416932945382355908790599225266501822907911457504978515578255421292',
) {
const zeros = []
let currentZero = defaultZero
for (let i = 0; i < levels; i++) {
zeros.push(toHex(currentZero))
currentZero = hasher.hash(levels, currentZero, currentZero)
}
return zeros
}
// console.log(zeros(32))
module.exports = { zeros, toHex }