Joomla 3.2.1 password encryption

Question

When the user register on the site , and I look in the database joomla_users in the password table, there are password stored in the following formats:

• $P$D

Answer 1

Try this,

The following piece of code is creating Joomla standard password (Older Version 1.5,1.7 etc).

 jimport('joomla.user.helper');
 $salt = JUserHelper::genRandomPassword(32);
 $crypt = JUserHelper::getCryptedPassword($password_choose, $salt);
 $password = $crypt.':'.$salt;

Joomla 3.2+ introduced PHP's password algorithm bcrypt but it required a minimum PHP 5.3+ If you plan to use bcrypt make sure your server PHP version is capable for this, read more here.

The other Version of Joomla Using the following methods (Joomla 3.x)

 jimport('joomla.user.helper');
 $yourpass = JUserHelper::hashPassword($password_choose);

The older algorithm also works fine in latest version too , only difference is older version creates a 65 character password and new one creates 34 character string. always go with updated version

Also if you are using external script should include Joomla framework like below. This should at very top of your external php file

define( '_JEXEC', 1 );
define('JPATH_BASE', dirname(__FILE__) );//this is when we are in the root
define( 'DS', DIRECTORY_SEPARATOR );

require_once ( JPATH_BASE .DS.'includes'.DS.'defines.php' );
require_once ( JPATH_BASE .DS.'includes'.DS.'framework.php' );

$mainframe =& JFactory::getApplication('site');
$mainframe->initialise();

Also you mentioned you have to check users credential then no need to check password format and all thing just use below codes after framework loads.

   $credentials['username'] = $data['username']; //user entered name
   $credentials['password'] = $data['password']; //users entered password
   $app = JFactory::getApplication();
   $error = $app->login($credentials, $options);
   if (!JError::isError($error)) {
    // login success
    }
  else{
    //Failed attempt
   }

hope it helps..