tmm

import CryptoJS from 'crypto-js'

const GDAX_SECRET = 'PYPd1Hv4J6/7x...';

const getGdaxSignature = (endpoint, body = '') => {
  const timestamp = Date.now() / 1000;
  const body = JSON.stringify(body);
  const message = timestamp + method + endpoint + body; // create prehash string by concatenating required parts
  const key = CryptoJS.enc.Base64.parse(GDAX_SECRET); // Base64 decode the alphanumeric secret string
  const signedMessage = CryptoJS.HmacSHA256(message, key); // use it as key for SHA 256 HMAC