How to encrypt and decrypt string/object in nodejs

Question

I would like to encrypt an object then decrypt it. The encryption works very well but the decryption fails. Below my code :

crypto_ext.js

const crypto = require("crypto")
const password = "shared_key"
const algorithm = "aes256"

export const encrypt = (text) => {
    if(!text) return ''
    const cipher = crypto.createCipher(algorithm, password);
    let crypted = cipher.update(text, 'utf-8', 'base64');
    crypted += cipher.final('base64');
    return crypted;
}

export const decrypt = (text) => {
    if(!text) return ''
    const decipher = crypto.createDecipher(algorithm, password);
    let decrypted = decipher.update(text, 'base64', 'utf-8');
    decrypted += decipher.final('utf-8');
    return decrypted;
}

and in my test.js, I have :

import {encrypt, decrypt} from './crypto_ext.js'
let test = {key1: val1, key2: val2}
test = encrypt(JSON.stringify(test)) || test
console.log("Encrypt : ", test)
console.log("Decrypt : ", decrypt(test)) // I should have my object as string here

And this is what I'm getting as error :

Uncaught Error: unable to decrypt data
at unpad (decrypter.js:83)
at Decipher.webpackJsonp../node_modules/browserify-aes/decrypter.js.Decipher._final (decrypter.js:38)
at Decipher.webpackJsonp../node_modules/cipher-base/index.js.CipherBase._finalOrDigest (index.js:76)
at decrypt (crypto_ext.js:17)
...

Can you please tell me what I'm doing wrong ?

Answer 1

1. Method createCipher deprecated. Use createCipheriv instead.
2. Try to use aes192 algorithm.