code: private function checkAuth($requestParams)
  	{
  		$sign = $this->getSignForAuth();
  
  		if ($sign != '' && $sign != null) {
  			return $this->isCorrectSign($sign, $requestParams);
  		}
  
  		$providerData = $this->getProviderForAuth();
  
  		if ($providerData) {
  
  			if (self::getConfig('provider.id') == $providerData['login']
  				&& self::getConfig('provider.password') == $providerData['password']
  			) {
  				return true;
  			}
  		}
  
  		return false;
  	}
docs: Проверка авторизации
  
  @param $requestParams
  
  @return bool