nilsteampassnet / TeamPass

    }

}

function teampass_pbkdf2_hash($p, $s, $c, $kl, $st = 0, $a = 'sha256')

{

    $kb = $st + $kl;

    $dk = '';

    for ($block = 1; $block <= $kb; $block++) {

        $ib = $h = hash_hmac($a, $s.pack('N', $block), $p, true);

        for ($i = 1; $i < $c; $i++) {

            $ib ^= ($h = hash_hmac($a, $h, $p, true));

        }

        $dk .= $ib;

    }

    return substr($dk, $st, $kl);

}

}

//generate pbkdf2 compliant hash

function strHashPbkdf2($p, $s, $c, $kl, $a = 'sha256', $st = 0)

{

    $kb = $st + $kl; // Key blocks to compute

    $dk = ''; // Derived key

    for ($block = 1; $block <= $kb; $block++) { // Create key

        $ib = $h = hash_hmac($a, $s.pack('N', $block), $p, true); // Initial hash for this block

        for ($i = 1; $i < $c; $i++) { // Perform block iterations

            $ib ^= ($h = hash_hmac($a, $h, $p, true)); // XOR each iterate

        }

        $dk .= $ib; // Append iterated block

    }

    return substr($dk, $st, $kl); // Return derived key of correct length

}

/**

 * stringUtf8Decode()