'Returns a list of image id/name mappings from Registry
:param filters: dict of keys & expected values to filter results
:param marker: image id after which to start page
:param limit: max number of images to return
:param sort_key: results will be ordered by this image attribute
:param sort_dir: direction in which to order results (asc, desc)'

def get_images(self, **kwargs):

    params = self._extract_params(kwargs, images.SUPPORTED_PARAMS)
    res = self.do_request('GET', '/images', params=params)
    image_list = jsonutils.loads(res.read())['images']
    for image in image_list:
        image = self.decrypt_metadata(image)
    return image_list
