Test Criptográfico: PHP mcrypt y CryptoJS (AES)

<script type="text/javascript" src="cryptojs/3.1.2/rollups/aes.js"></script>
<script type="text/javascript" src="cryptojs/3.1.2/components/pad-zeropadding.js"></script>

<form method="post" enctype="application/x-www-form-urlencoded" action="crypto.php">
    <input type="text" id="md5" name="md5" size="100" maxlength="100" />
    <input type="text" id="code" name="code" size="100" maxlength="100" />
    <input type="submit" value="Test" />
</form>

var hash = CryptoJS.MD5('8765432187654321');
var key  = CryptoJS.enc.Utf8.parse(hash);
var iv   = CryptoJS.enc.Utf8.parse('1234567812345678');

document.getElementById('md5').value  = hash;
document.getElementById('code').value = CryptoJS.AES.encrypt
(
      'Test Ok!'
    , key
    , {iv: iv, mode: CryptoJS.mode.CBC, padding: CryptoJS.pad.ZeroPadding }
);

<?php

$text      = "Test Ok!";
$key       = md5("8765432187654321");
$iv        = utf8_encode("1234567812345678");
$encrypted = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $key, $text, MCRYPT_MODE_CBC, $iv);
//$decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $key, $encrypted, MCRYPT_MODE_CBC, $iv);
$decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $key, base64_decode($_POST["code"]), MCRYPT_MODE_CBC, $iv);

echo "md5: " . $_POST["md5"] . " -> " . $key . ", encrypted: " . $_POST["code"] . " -> " . base64_encode($encrypted) . ", decrypted: " . $decrypted; 

?>