Validate github webhook event

crypto.js

const crypto = require('crypto')
/**
* Sign request body using secret and HTTP request body
* @param {string} key Secret key
* @param {body} body HTTP request body
* @returns {string} Generate hash code
*/
function signRequestBody (key, body) {
  return `sha1=${crypto.createHmac('sha1', key).update(body, 'utf-8').digest('hex')}`
}

module.exports = { signRequestBody }