Bcrypt passwords with ZF2 + Doctrine ORM Module

Application\Service\UserService.php

<?php

namespace Application\Service;

use Zend\Crypt\Password\Bcrypt;
use Application\Entity;

class UserService 
{
  
	/**
	 * Static function for checking hashed password (as required by Doctrine)
	 * @param  Entity\Account $account       The identity object
	 * @param  string         $passwordGiven Password provided by the user, to verify
	 * @return boolean                       If the password was correct or not
	 */
	public static function verifyHashedPassword(Entity\Account $account, $passwordGiven)
	{
		$bcrypt = new Bcrypt;
		return $bcrypt->verify($passwordGiven, $account->getPassword());
	}
  
  // Other stuff like register()

}

config.php

<?php
return array(
  'doctrine' => array(
		'authentication' => array(
			'orm_default' => array(
				'objectManager'      => 'Doctrine\ORM\EntityManager',
				'identityClass'      => 'Application\Entity\Account',
				'identity_property'   => 'email',
				'credential_property' => 'password',
				'credential_callable' => 'Application\Service\UserService::verifyHashedPassword'
			),
		),
	),
);