NodeCryptoEncodeDecode.js

// Nodejs encryption with CTR
const crypto = require('crypto')

class Crypto {
  constructor () {
    this.algorithm = 'aes192'
    this.secret = 'd6F3Efeq'
  }

  encrypt (text) {
    let cipher = crypto.createCipher(this.algorithm, this.secret)
    let crypted = cipher.update(text, 'utf8', 'hex')
    crypted += cipher.final('hex')
    return crypted
  }

  decrypt (text) {
    let decipher = crypto.createDecipher(this.algorithm, this.secret)
    let dec = decipher.update(text, 'hex', 'utf8')
    dec += decipher.final('utf8')
    return dec
  }
}

const c = module.exports = new Crypto()

// DEMO:
let enc = c.encrypt('Hello')
console.log(enc)

let dec = c.decrypt(enc)
console.log(dec)