Android Certificate Installer uses jQuery Form Plugin ajaxForm to handle uploading and transloading certificates. The upload/transload response then provides the hash of the certificate. When tested, however, the response was surrounded by junk tags.
Taking a look at the Form Plugin API, we see the plugin uses a hidden iframe to handle file uploads. A simple patch then adds the proper behavior. This patch is against version 2.49 of the un-minified plugin file.