the resulting file could not be opened by feh, ImageMagick and xnview. Try for yourself.

broken_aes_node.js

var crypto = require('crypto');
var fs = require('fs');

fs.readFile('/tmp/4.jpg', function(err, data){
if (!err){
var cipher = crypto.createCipher('aes-256-cbc','abc') // set up cipher engine
var crypted = cipher.update(data,'binary','hex')
crypted += cipher.final('hex')

var decipher = crypto.createDecipher('aes-256-cbc','abc') //set up decipher engine
var dec = decipher.update(crypted,'hex','binary')
dec += decipher.final('binary')

fs.writeFile('/tmp/5.jpg', dec);  //write deciphered data
}
});