Boka revatsvagiri kubva kuYunivhesiti yeCalifornia kuSan Diego yakagadzira nzira yekuziva nharembozha kubudikidza nezviratidzo uyeinotumirwa pamusoro pemhepo kuburikidza neBluetooth Low Energy (BEDZA) uye inoshandiswa nevatambi veBluetooth vanogashira kuona kana michina mitsva iri pakati.
Zvichienderana nekuitwa, mabhekoni masaini anotumirwa pamwero wenguva dzinosvika mazana mashanu paminiti uye, sezvinodiwa nevagadziri veiyo chiyero, haazivikanwe zvachose uye haagone kushandiswa kubatanidza mushandisi.
"Izvi zvakakosha nekuti munyika yanhasi Bluetooth inokonzeresa njodzi nekuti inogara isina waya inoburitswa kubva kumidziyo yedu yese," akadaro Nishant Bhaskar, Ph.D. mudzidzi muUC San Diego Dhipatimendi reComputer Science neUinjiniya uye mumwe wevanyori vanotungamira bepa.
Muchokwadi, mamiriro acho akave akasiyana, uye kana atumirwa, chiratidzo chinokanganiswa pasi pesimba rezvinhu zvinomuka panguva yekugadzirwa kwechipi chimwe nechimwe. Izvi zvinokanganisa, izvo zvakasarudzika uye zvinogara kune imwe neimwe mudziyo, zvinogona kuwonekwa uchishandisa yakajairwa programmable transceivers (SDR, Software Defined Radio).
Dambudziko rinozviratidza mune combo chips inosanganisa Wi-Fi uye Bluetooth mashandiro, vanoshandisa yakajairwa master oscillator uye akati wandei analogine zvikamu zvinoshanda zvakafanana, izvo zvinochinja mukubuda zvinotungamira kune asymmetry muchikamu uye amplitude. Mari yese yechikwata chekuramwa mabasa inofungidzirwa kusvika pamadhora mazana maviri. Macode samples ekutora akasarudzika mavara kubva kune yakabatwa chiratidzo anotumirwa paGitHub.
"Nguva pfupi inopa zvigunwe zvisiri izvo, zvichiita kuti nzira dzekare dzishaye basa pakuronda Bluetooth," akadaro Hadi Givehchian, ariwo Ph.D. mune sainzi yekombuta kubva kuUC San Diego. mudzidzi uye munyori mukuru wechinyorwa.
Mukuita, hunhu hwakaonekwa inobvumira chigadzirwa kuti chizivikanwe, pasinei nekushandiswa kwemaitiro akadaro ekudzivirira kupokana nekuzivikanwa, senge MAC kero randomization. Ye iPhone, iyo tag yekugamuchira renji, yaikwana kuzivikanwa, yaive 7 metres, ine COVID-19 yekuonana yekutevera app inoshanda. Kumidziyo yeAroid, kuswededzwa kukuru kunodiwa kuti zvizivikanwe.
Kuedza kunoverengeka kwakaitwa kusimbisa basa reiyo nzira mukuita munzvimbo dzeveruzhinji dzakadai sezvitoro zvekofi.
Panguva yekutanga kuedza, 162 zvishandiso zvakaongororwa, izvo makumi mana muzana zvakakwanisa kugadzira zviziviso zvakasiyana. Muchiyedzo chechipiri, 647 nharembozha dzakadzidzwa uye zviziviso zvakasiyana zvakagadzirirwa 47% yazo. Mukupedzisa, mukana wekushandisa zviziviso zvakagadzirwa kuti zvione kufamba kwezvishandiso zvevazvipiri vakabvuma kutora chikamu mukuedza kwakaratidzwa.
Vatsvakurudzi vari kuongororawo kana nzira yavakagadzira inogona kushandiswa kune mamwe marudzi emidziyo.
Nzira dzese dzekutaurirana nhasi hadzina waya uye dziri panjodzi, "akadaro Dinesh Bharadia, purofesa muUC San Diego Dhipatimendi reMagetsi neComputer Engineering uye mumwe wevanyori vanotungamira bepa. "Tiri kushanda kuti tivake hardware-level dziviriro kurwisa zvinogona kurwiswa."
Vatsvagiri vakacherekedza kuti kungodzima Bluetooth hakuregi kumisa mafoni ese kuburitsa mabhekoni eBluetooth.
Semuenzaniso, mabhekoni achiri kuburitswa paunenge uchidzima Bluetooth kubva Kudzora Center paChidzitiro cheKumba chezvimwe zvishandiso zveApple. "Sekuziva kwedu, chinhu chega chinomisa mabhekoni eBluetooth kudzima foni yako"
Vatsvakurudzi vakacherechedzawo matambudziko akati wandei anoita kuti kuzivikanwa kuve kwakaoma. Semuyenzaniso, bhakoni masaini ma paramita anokanganiswa nekuchinja kwekushisa, uye chinhambwe chekugamuchira teki chinokanganiswa nekuchinja kwesimba rechiratidzo cheBluetooth chakaiswa pane mamwe maturusi.
Kuvhara nzira chekuzivikanwa mubvunzo, inokurudzirwa kusefa chiratidzo padanho re firmware kune Bluetooth chip kana kushandisa nzira dzakakosha dzekudzivirira. Kudzima Bluetooth hakuwanzo kukwana, sezvo mamwe maturusi (akadai seApple smartphones) anoramba achitumira masaini kunyangwe Bluetooth yakadzimwa, ichida kuti mudziyo uvharwe zvachose kuvharira kutumira.
Finalmente Kana iwe uchifarira kuziva zvakawanda nezvazvo, unogona kutarisa ruzivo mu inotevera chinongedzo.