dotcypress

const { createHash, createHmac } = require('crypto')
  
function checkSignature (token, { hash, ...data }) {
  const secret = createHash('sha256')
    .update(token)
    .digest()
  const checkString = Object.keys(data)
    .sort()
    .map(k => `${k}=${data[k]}`)
    .join('\n')