Textverschlüsselung mit crypto

index.js

var crypto = require('crypto'),
    algorithm = 'aes-256-ctr',
    password = 'ThisIsAUserPassword';

function encrypt(text){
    var cipher = crypto.createCipher(algorithm, password)
    var crypted = cipher.update(text, 'utf8', 'hex')
    crypted += cipher.final('hex');
    return crypted;
}

function decrypt(text){
  var decipher = crypto.createDecipher(algorithm,password)
  var decrypted = decipher.update(text,'hex','utf8')
  decrypted += decipher.final('utf8');
  return decrypted;
}

var hw = encrypt("Hello World");
console.log('Verschlüsselt: \n' + hw + '\n');
console.log('Entschlüsselt: \n' + decrypt(hw));