for mod_auth_token

tokenizer.php

<?php

$key = 'token'; // Secret
$dirpath = '/token/'; //Prefix
$filepath = '/sample/file.mp3'; // relative path from ScriptAlias

$tokenize_url = auth_token($key, $dirpath, $filepath);

function auth_token($key,$dirpath,$filepath){
    $hex = dechex(time());
    return $dirpath.md5($key.$filepath.$hex).'/'.$hex.$filepath;
}

?>