index.js

'use strict';

var crypto = require('crypto');

exports.createSignature = function (params, key) {
  var united = params.wsb_seed
    + params.wsb_storeid
    + params.wsb_order_num
    + params.wsb_test
    + params.wsb_currency_id
    + params.wsb_total
    + key;

  switch (parseInt(params.wsb_version)) {
    case 1:
      console.log('md5');
      return crypto.createHash('md5').update(united).digest('hex');
      break;
    case 2:
      console.log('sha1');
      return crypto.createHash('sha1').update(united).digest('hex');
      break;
    default:
      return '';
  }
};

exports.checkSignature = function (params, key) {
  if (!params.wsb_signature) return false;

  var united = params.batch_timestamp
    + params.currency_id
    + params.amount
    + params.payment_method
    + params.order_id
    + params.site_order_id
    + params.transaction_id
    + params.payment_type
    + params.rrn
    + key;

  if (params.wsb_signature == crypto.createHash('md5').update(united).digest('hex')) {
    return true;
  } else {
    return false;
  }
};

exports.createSignatureHalva = function (params, key) {
  var united = params.wsb_seed
    + params.wsb_storeid
    + params.wsb_order_num
    + params.wsb_test
    + params.wsb_currency_id
    + params.wsb_total
    + params.wsb_terminal_halva
    + key;

  switch (parseInt(params.wsb_version)) {
    case 1:
      console.log('md5');
      return crypto.createHash('md5').update(united).digest('hex');
      break;
    case 2:
      console.log('sha1');
      return crypto.createHash('sha1').update(united).digest('hex');
      break;
    default:
      return '';
  }
};