gistfile1.txt

<?php

require_once __DIR__.'/vendor/autoload.php';

$lib = new PasswordLib\PasswordLib();

$hash = $lib->createPasswordHash('tetete', '$6$');
var_dump($hash);

var_dump(date('Y-m-d H:i:s'));

for ($i = 0; $i < 50000; $i++) {
    if ($i % 1000 == 0) {
        var_dump($i, date('Y-m-d H:i:s'));
    }

    $boolean = $lib->verifyPasswordHash('tetete', $hash);
}

var_dump($boolean, date('Y-m-d H:i:s'));

FYI

https://github.com/drupal/drupal/blob/7.x/modules/user/user.install#L142

Drupal stores hashed password string in the following type of column:

  'pass' => array(
    'type' => 'varchar',
    'length' => 128,
    'not null' => TRUE,
    'default' => '',
    'description' => "User's password (hashed).",