Encrypt and decrypt text in nodejs

crypto-ctr.js

// Part of https://github.com/chris-rock/node-crypto-examples

// Nodejs encryption with CTR
var crypto = require('crypto'),
    algorithm = 'aes-256-ctr',
    password = 'd6F3Efeq',
    key = Buffer.from('5ebe2294ecd0e0f08eab7690d2a6ee69', 'hex'),
    iv = Buffer.from('26ae5cc854e36b6bdfca366848dea6bb', 'hex');

function encrypt(text){
  const cipher = crypto.createCipheriv('aes-128-cbc', key, iv);
//   var cipher = crypto.createCipheriv(algorithm,password)
  var crypted = cipher.update(text,'utf8','hex')
  crypted += cipher.final('hex');
  return crypted;
}
 
function decrypt(text){
  var decipher = crypto.createDecipheriv('aes-128-cbc', key, iv);
//   var decipher = crypto.createDecipher(algorithm,password)
  var dec = decipher.update(text,'hex','utf8')
  dec += decipher.final('utf8');
  return dec;
}
 
var hw = encrypt("hello world")
// outputs hello world
console.log(decrypt(hw));