gistfile1.php

<?php
$msg = "Lorem";
        // Key that user inputs
        $okey = "potato";
        // A slow hash is made from this key - 2^14 iterations of whirlpool. Salt is generated automatically and is about 100 characters long.
        $hash = $hasher->hash($okey);
        // Salt of this hash is taken and stored, so that hash can be re-created with correct original key.
        $salt = $hasher->pull_salt($hash);
        // Last 32 characters of hash are taken for use as actual key
        $key = substr($hash, -32);
        // Encrypted with RIJNDAEL-256
        $enc = $c->encrypt($msg, $key, True);

        // DECRYPTION
        $attempt = "potato"
        var_dump("DERIVED HASH", $hash, "STORED DATA:", $enc, $salt, "REQUIRED DATA:", $okey, "ACTUAL KEY", $key2, "MESSAGE:",
            $c->decrypt($enc, substr($hasher->hash($attempt, $salt), -32), True)
        );