MercadoBitcoin - Calculando o TAPI-MAC em NodeJS

tapi_mac.js

const TAPI_SECRET = '1ebda7d457ece1330dff1c9e04cd62c4e02d1835968ff89d2fb2339f06f73028';
const EXPECTED_TAPI_MAC = '7f59ea8749ba596d5c23fa242a531746b918e5e61c9f6c8663a699736db503980f3a507ff7e2ef1336f7888d684a06c9a460d18290e7b738a61d03e25ffdeb76';
const MESSAGE = '/tapi/v3/?tapi_method=list_orders&tapi_nonce=1';

const crypto = require('crypto');
const hmac = crypto.createHmac('sha512', TAPI_SECRET);

hmac.update(MESSAGE);

const TAPI_MAC = hmac.digest('hex');

if (TAPI_MAC == EXPECTED_TAPI_MAC)
  console.info("Success!");
else
  console.error("The're different ;(");

tapi_mac.py

import urllib
import hashlib
import hmac

MB_TAPI_SECRET = '1ebda7d457ece1330dff1c9e04cd62c4e02d1835968ff89d2fb2339f06f73028'
REQUEST_PATH = '/tapi/v3/'

params = {
    'tapi_method': 'list_orders',
    'tapi_nonce': 1
}

params = urllib.urlencode(params)
params_string = REQUEST_PATH + '?' + params

H = hmac.new(MB_TAPI_SECRET, digestmod=hashlib.sha512)
H.update(params_string)
tapi_mac = H.hexdigest()

print tapi_mac

# won't produce the same value as above because urlencode sorts the params hash