AES Encrypt and decrypt from Hex

Author: andrepcgCreated Jan 13, 2018Updated May 18, 2026

What is wrong with the following piece of code?

javascript

var key = '123';
// Encrypt
var ciphertext = CryptoJS.AES.encrypt('my message', key);
var cypherString = ciphertext.toString(CryptoJS.format.Hex)

// Decrypt
var bytes  = CryptoJS.AES.decrypt(cypherString, key, {format: CryptoJS.format.Hex });
var plaintext = bytes.toString();

plaintext is always an empty string when it should output 'my message'

Source: brix/crypto-js

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