native node crypto

var Crypto = require("crypto");

var Cipher = {
  pass: "0123456789abcdef0123456789abcdef",
  iv: "0123456789abcdef",
  encript: function (msg) {
    try {
      var cipher = Crypto.createCipheriv("aes-256-cbc", this.pass, this.iv);
      var hash = cipher.update(msg, 'utf8', "hex");
      return hash + cipher.final("hex");
    } catch (err) {
      console.error(err);
      return "";
    }
  },
  decript: function (hex){
    try {
      var decipher = Crypto.createDecipheriv("aes-256-cbc", this.pass, this.iv);
      var dec = decipher.update(hex, "hex", 'utf8');
      return dec + decipher.final('utf8');
    } catch (err) {
      console.error(err);
      return "";
    }
  }
}
var encripted = Cipher.encript("i have an apple");
console.log(encripted);
var decripted = Cipher.decript(encripted);
console.log(decripted);

crypto-js

var CryptoJS = require("crypto-js");
var Cipher = {
  pass: CryptoJS.enc.Utf8.parse("0123456789abcdef0123456789abcdef"),
  iv: CryptoJS.enc.Utf8.parse("0123456789abcdef"),
  encript: function (msg) {
    try {
      var options = { mode: CryptoJS.mode.CBC, iv: this.iv};
      var json = CryptoJS.AES.encrypt(msg, this.pass, options);
      return json.ciphertext.toString(CryptoJS.enc.Hex);
    } catch (err) {
      console.error(err);
      return "";
    }
  },
  decript: function (hex){
    try {
      var options = { mode: CryptoJS.mode.CBC, iv: this.iv};
      var json = CryptoJS.AES.decrypt({
        ciphertext: CryptoJS.enc.Hex.parse(hex)
      }, this.pass, options);
      return json.toString(CryptoJS.enc.Utf8);
    } catch (err) {
      console.error(err);
      return "";
    }
  }
};

var encripted = Cipher.encript("ruigu");
console.log(encripted);
var decripted = Cipher.decript(encripted);
console.log(decripted);