# HwBinder IPC from client to server binder_call(mtk_hal_keyattestation_client, mtk_hal_keyattestation_server); add_hwservice(mtk_hal_keyattestation_server, mtk_hal_keyattestation_hwservice) allow mtk_hal_keyattestation_client mtk_hal_keyattestation_hwservice:hwservice_manager find; # allow hal_keymaster tee_device:chr_file rw_file_perms;