Abaphenyi abavela eBen-Gurion University, efunda izindlela ezifihliwe zokudluliswa kwedatha kusuka kumakhompyutha angawodwa, benze indlela entsha inhlangano yesiteshi sokuxhumana ebizwa nge- «AIR-FI», evumela, ngokusebenzisa ukukhohlisa ama-chip memory we-DDR, ukhiqize isignali yomsakazo kumvamisa we-2.4 GHz, ongathathwa yi-a idivayisi evunyelwe I-Wi-Fi amamitha ambalwa ukusuka lapho.
Ngokombono osebenzayo, indlela ingasetshenziswa ukudlulisa okhiye bokubethela, amaphasiwedi, nemininingwane eyimfihlo kusuka kukhompyutha engenakho ukuxhumana kwenethiwekhi futhi inegciwane le-spyware noma i-malware.
Mayelana ne-AIR-FI
Abaphenyi ikwazile ukufeza isilinganiso sokudluliswa samabhithi ayi-100 ngomzuzwana ukubeka abamukelayo Wi-Fi, njenge-smartphone noma i-laptop, ebangeni elingu-180 cm. Izinga lephutha lokudlulisa belingu-8,75%, kepha kwasetshenziswa amakhodi okulungisa amaphutha ukukhomba nokulungisa amaphutha okudlulisa.
Ukuhlela ishaneli yokudlulisa idatha, vele uqale inqubo ejwayelekile yomsebenzisi, ukuthi ingaqhutshwa emshinini obonakalayo. Ukwamukelwa, kuyadingeka idivayisi ene-chip engenantambo ekwazi ukuqapha umoya osezingeni eliphansi (ekuhlolweni, kusetshenziswe ama-adaptha angenantambo asuselwa kuma-Atheros AR92xx ne-AR93xx chips nge-firmware eguquliwe edlulisa imininingwane mayelana nemingcele yesiginali efanelekile ukuhlaziywa kwe-spectral).
Lapho kukhiqizwa isignaliKusetshenziswe umthamo wememori we-DDR4-2400 isebenza ngemvamisa ye-2400 MHz ukwenza ukuphazamiseka kukagesi lapho isilawuli singena kwimodyuli yememori ngamabhasi wedatha ahlukile.
Ibanga le-Wi-Fi liwela kumaza we-2.400-2.490 GHz, okungukuthi, yeqa imvamisa lapho imemori isebenza khona.
Abaphenyi bakutholile lokho ngomgwaqo omningi ngasikhathi sinye kumabhasi wedatha ahlukile, amagagasi kagesi akhishwa ngemvamisa engu-2,44 Ghz, athunjwa isitaki esingenantambo esingu-802.11.
Ngamamojula wememori ngaphandle kwe-DDR4-2400, le ndlela iyasebenza lapho imvamisa yememori iguqulwa ngokohlelo, evunyelwe ku-XMP (Extreme Memory Profile).
Ukwenza isignali, ukufinyelela ngasikhathi sinye ebhasini kusuka emicu yokusebenza efanayo iboshwe kuma-cores ahlukile we-CPU. Ukuqonda ikhodi iwusizo esiginali kwenziwa kusetshenziswa ukuguquguquka kwe-OOK okulula (oku-off-encoding) nge-amplitude shift keying (ASK), lapho u- "0" no- "1" afakwa khona ngokusetha ama-amplitudes amasiginali ahlukahlukene, futhi ulwazi ludluliselwa ngesilinganiso esimisiwe. - okukodwa nge-millisecond ngayinye.
Ukudluliswa kwe- "1" kwenza uchungechunge lwememori olubhaliwe olubangelwa ukukopishwa okulandelanayo kwe-1 MB yedatha phakathi kwamalungu afanayo amabili. Lapho kudluliswa u- "0", i-algorithm ayenzi sinyathelo ngesikhathi esabelwe ukudlulisa kancane. Ngakho-ke, ukudluliswa kwe- "1" kudala ukukhishwa kwesiginali, futhi ukudluliswa kwe- "0" isignali kuyanyamalala.
Phakathi kwezinyathelo zokulwa nalokhu ukusetshenziswa kwendlela ye-AIR-FI, ukuklanywa kwensimu kushiwo ngokwakhiwa kwepherimitha enhlanganwenin, lapho kungavunyelwe ukuphatha imishini ngamachips angenantambo, kanye nokubeka icala lekhompyutha esibayeni seFaraday, kudala umsindo kuma-Wi-Fi frequency, aqala izinqubo zangemuva ezenziwa ngokungahleliwe ukusebenza kwememori nokuqapha ukubonakala kohlelo lwezinqubo ezisolisayo ezenza ukusebenza kwememori okungavamile.
Futhi, ekhasini labaphenyi, kwakheka izindlela zokudlulisa yemininingwane efihliwe abakhombe kusetshenziswa amafomu wokuvuza kagesi, kagesi, wokushisa nokukhanya
- I-PowerHammer: Hlela ukuthunyelwa kwedatha entanjeni yamandla, sebenzisa umthwalo ku-CPU ukushintsha ukusetshenziswa kwamandla ODINI: Ukuboniswa kokukhishwa kwedatha kusuka kudivayisi esendlini egadiwe (ikheji leFaraday) ngokuhlaziya imvamisa ephansi yamagnetic oscillations avela ngesikhathi Ukusebenza kwe-CPU.
- I-MAGNETO: ukukhishwa kwedatha ngokuya ngesilinganiso sokushintshashintsha kwamandla kazibuthe okwenzeka ngesikhathi sokusebenza kwe-CPU.
- I-AirHopper: ukudluliswa kwedatha ngesilinganiso esifika kuma-byte angama-60 ngomzuzwana kusuka ku-PC kuya ku-smartphone ngokuhlaziya kwi-smartphone ene-tuner ye-FM yokuphazanyiswa komsakazo okwenzeka lapho imininingwane ikhonjiswa esikrinini.
- I-BitWhisper - Ukudluliswa kwedatha ebangeni elifinyelela ku-40cm ngesilinganiso se-1-8 bits ngehora ngokulinganisa ukuguquguquka kokushisa kwecala le-PC.
- I-GSMem: ukukhishwa kwedatha ebangeni elifinyelela kumamitha angama-30 ngokwakha ukuphazamiseka kwe-electromagnetic kumvamisa wamanethiwekhi we-GSM athathwe yi-smartphone.
Umthombo: https://cyber.bgu.ac.il