Chikwata chevaongorori kubva kuYunivhesiti yeCalifornia, San Diego, yakagadzira nzira yekuziva nharembozha vachishandisa mabhekoni anotumirwa pamusoro pemhepo vachishandisa Bluetooth Low Energy (BLE) uye inoshandiswa nevasinganzwisisi Bluetooth vanogamuchira kuona zvishandiso zvitsva mukati memhando.
Zvichienderana nekuitwa, mabhekoni masaini anotumirwa neakawanda anosvika mazana mashanu paminiti uye, sekunambwa nevagadziri veiyo chiyero, haana zvachose uye haagone kushandiswa kusunga kune mushandisi. Muchokwadi, mamiriro ezvinhu akazove akasiyana uye kana akatumirwa, chiratidzo chinokanganiswa pasi pesimba rezvinhu zvinomuka panguva yekugadzirwa kwega yega chip. Izvi zvinokanganisa, izvo zvakasarudzika uye zvinogara kune imwe neimwe mudziyo, zvinogona kuwonekwa uchishandisa yakajairwa programmable transceivers (SDR, Software Defined Radio).
Dambudziko rinozviratidza mumachipisi akasanganiswa anosanganisa Wi-Fi neBluetooth mashandiro, shandisa yakajairika master oscillator uye akati wandei akafanana anoshanda analog zvikamu, hunhu hwahwo hunotungamira kune asymmetry muchikamu uye amplitude. Mutengo wese wemidziyo yekuita kurwisa unofungidzirwa kusvika pamadhora mazana maviri. Mienzaniso yekodhi yekubvisa mavara akasiyana kubva kune yakabatwa chiratidzo inoburitswa paGitHub.
Mukuita, chinhu chakacherechedzwa chinobvumira mudziyo kuti uzivikanwe, zvisinei nekushandiswa kwematanho ekudzivirira ekuzivikanwa akadai seMAC kero randomisation. Ye iPhone, iyo tag yekugamuchira renji yakakwana yekuzivikanwa yaive 7 metres, ine COVID-19 yekubata yekutevera application inoshanda. Kumidziyo yeAroid, kuzivikanwa kunoda kuva pedyo.
Kusimbisa kuita kwemaitiro mukuita, zviedzo zvakawanda zvakaitwa munzvimbo dzeveruzhinji semakofi. Munguva yekuedza kwekutanga, zvishandiso zve162 zvakaongororwa, izvo zviziviso zvakasiyana zvakagadzirirwa 40%. Mukuedza kwechipiri, 647 nharembozha dzakadzidzwa, uye zviziviso zvakasiyana zvakagadzirirwa 47% yavo. Pakupedzisira, mukana wekushandisa zviziviso zvakagadzirwa kuronda mafambiro emidziyo yevazvipiri vakabvuma kutora chikamu mukuedza kwakaratidzwa.
Vatsvakurudzi vakacherechedzawo matambudziko akawanda anoita kuti kuzivikanwa kuve kwakaoma. Semuyenzaniso, maparamendi echiratidzo chebhekoni anokanganiswa nekuchinja kwekushisa, uye kwete chinhambwe chinotambirwa tag chinokanganiswa nekushandurwa kwesimba rechiratidzo cheBluetooth rinoshandiswa pane mamwe maturusi. Kuvhara nzira yekuzivikanwa iri mubvunzo, inokurudzirwa kusefa chiratidzo padanho reiyo firmware yeBluetooth chip kana kushandisa yakakosha nzira dzekudzivirira hardware. Kudzima Bluetooth hakuwanzo kukwana, semamwe maturusi (semuenzaniso, maApple smartphones) anoenderera mberi nekutumira mabhekoni kunyangwe Bluetooth yakadzimwa uye inoda kudzima zvachose kwechishandiso kuvharira kutumira.
Source: opennet.ru