public boolean authenticate(String login, String password)
			throws AuthenticationFailedException{
		
		List<UserPersisted> users = persistence.getUsersRegistereds();
		Iterator<UserPersisted> it = users.iterator();
		
		while(it.hasNext()){
			UserPersisted user = it.next();
			
			if(user.getEmail().equals(login) && 
			   user.getPassword().equals(password))
			   
			   return true;
		}
		
		return false;
	}