def find_encrypt_data_assertion_list(self, _assertions):
        """ Verifies if a list of assertions contains encrypted data in the
        advice element.

        :param _assertions: A list of assertions.
        :return: True encrypted data exists otherwise false.
        """
        for _assertion in _assertions:
            if _assertion.advice:
                if _assertion.advice.encrypted_assertion:
                    res = self.find_encrypt_data_assertion(
                        _assertion.advice.encrypted_assertion)
                    if res:
                        return True
Verifies if a list of assertions contains encrypted data in the
        advice element.

        :param _assertions: A list of assertions.
        :return: True encrypted data exists otherwise false.