- base64_encode: documentation ( source)
<?php
$key = '1521dc4feb1f44efec8a8936a28c1eb8';
// $key = base64_decode($key);
$message = 'I want to decode this';
// $iv = mcrypt_create_iv(16, MCRYPT_DEV_URANDOM);
$iv = '0000000000000000';
print $iv.'<p>';
$encrypted = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $key, $message, MCRYPT_MODE_CBC, $iv);
$decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $key, $encrypted, MCRYPT_MODE_CBC, $iv);
print base64_encode($encrypted);
?>