How to encrypt in node.js and decrypt in browser javascript

Question

How to encrypt in node.js and decrypt in browser javascript

I have a simple nodeJS program to encrypt plaintext:

var crypto = require("crypto");

var compatEnc = crypto.createCipher("aes-256-cbc", "password");
compatCrypted = compatEnc.update("Message", "utf8", "hex");
compatCrypted += compatEnc.final("hex");
console.log(compatCrypted);
// 0293cf0bdf5323cff809ba406ffc8283

I try to decrypt 0293cf0bdf5323cff809ba406ffc8283 on the browser

<!doctype html>
<html>
  <body>
    <script src="http://crypto-js.googlecode.com/svn/tags/3.1.2/build/rollups/aes.js"></script>
    <script src="http://crypto-js.googlecode.com/svn/tags/3.1.2/build/components/core-min.js"></script>

    <script>

    var nosalt = CryptoJS.lib.WordArray.random(0);

    // { salt : null } will generate random salt
    var enc = CryptoJS.AES.decrypt("0293cf0bdf5323cff809ba406ffc8283", "password",
    { salt: nosalt });

    console.log(CryptoJS.enc.Utf8.stringify(enc));

    </script>
  </body>
</html>

The output is blank. Can you tell me what is wrong with my decryption code? Thanks.

node.js

Answer 1

CryptoJS doesn't know that your encrypted text is hex-encoded.

Convert it to a WordArray first using CryptoJS.enc.Hex.parse(...);.