{"id":108946,"date":"2023-06-14T03:10:15","date_gmt":"2023-06-14T01:10:17","guid":{"rendered":"https:\/\/prohoster.info\/?p=108946"},"modified":"2023-06-14T14:56:27","modified_gmt":"2023-06-14T12:56:27","slug":"vossozdanie-kriptograficheskih-klyuchej-na-osnove-analiza-video-s-led-indikatorom-pitaniya","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/vossozdanie-kriptograficheskih-klyuchej-na-osnove-analiza-video-s-led-indikatorom-pitaniya","title":{"rendered":"Kr\u00fcptograafiliste v\u00f5tmete taastamine videovalve LED-toiteindikaatori anal\u00fc\u00fcsi p\u00f5hjal","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

David Ben-Gurioni \u00dclikooli teadlaste r\u00fchm (Iisrael) on v\u00e4lja t\u00f6\u00f6tanud uue k\u00fclgkanalite r\u00fcnnakute meetodi, mis v\u00f5imaldab kaugelt taastada \u0161ifreerimisv\u00f5tmete v\u00e4\u00e4rtusi ECDSA ja SIKE algoritmide p\u00f5hjal, anal\u00fc\u00fcsides videofotot kaamerast, mis pildistab nutikaardi lugeja LED-indikaatorit v\u00f5i seadet, mis on \u00fchendatud \u00fche USB-keskusega koos nutitelefoniga, mis teostab v\u00f5tmega operatsioone. <\/p>\n

Meetod p\u00f5hineb energiatootmise k\u00f5ikumisel, mis tuleneb CPU-l toimuvatest arvutustest, mis toovad kaasa v\u00e4ikeseid fluktuatsioone LED-toiteindikaatorite heleduses. Heleduse muutus on otseselt seotud teostatavate arvutustega ja seda on v\u00f5imalik tabada kaasaegsete videovalvekaamerate v\u00f5i nutitelefonide kaameratega, samas kui kaamerast saadud andmete anal\u00fc\u00fcs v\u00f5imaldab kaudselt taastada arvutustes kasutatud teabe. <\/p>\n

Kuna \u00fcletatakse n\u00e4idise t\u00e4psuse piirang, mis on seotud vaid 60 v\u00f5i 120 kaadri salvestamisega sekundis, on kasutusele v\u00f5etud mitmete kaamerate toetatud ajutise paralaksa re\u017eiim (rolling shutter), mis kajastab \u00fches kaadris erinevaid osi kiiresti muutuva objekti erinevatel ajamomendidel. Selle re\u017eiimi rakendamine v\u00f5imaldab anal\u00fc\u00fcsida kuni 60 tuhat valguskiiruse m\u00f5\u00f5tmist sekundis, kui pildistatakse iPhone 13 Pro Max kaameraga algse sagedusega 120 FPS, kui LED-indikaatori pilt h\u00f5lmab kogu kaadrit (objektiivi ees kasutati l\u00e4hendajat). Anal\u00fc\u00fcsi k\u00e4igus uuriti indikaatori v\u00e4rvikoostisosade (RGB) muutumist vastavalt protsessori energiatarbimise muutustele.

\"Kr\u00fcptograafiliste<\/center> <\/p>\n

Kl\u00fc\u00dcde taastamiseks kasutati tuntud Hertzbleed r\u00fcnnete meetodeid SIKE v\u00f5tme kapseldamise mehhanismi ja Minerva algoritmi jaoks, mis loob digiallkirju ECDSA, kohandatuna rakendamiseks teistsuguse lekkeallika kaudu kolmandate kanalite kaudu. R\u00fcnnak on t\u00f5hus ainult haavatavate ECDSA ja SIKE rakenduste kasutamisel teeki Libgcrypt ja PQCrypto-SIDH. N\u00e4iteks on haavatavad teegid kasutusel Samsung Galaxy S8 nutitelefonis ja kuues Amazonist ostetud nutikaardis viie erineva tootja poolt. <\/p>\n

Teadlased viisid l\u00e4bi kaks edukat katset. Esimeses \u00f5nnestus taastada 256-bitine ECDSA v\u00f5ti nutikaardilt, anal\u00fc\u00fcsides smartkaardi lugeja LED-indikaatori videot, mida filmiti \u00fclemaailmse v\u00f5rgu \u00fchendatud kaameraga, paigaldatud 16 meetri kaugusele seadmest. R\u00fcnnak v\u00f5ttis aega umbes tunni ja n\u00f5udis 10 000 digiallkirja loomist.

\"Kr\u00fcptograafiliste<\/center> <\/p>\n

Teises eksperimendis \u00f5nnestus taastada 378-bitine SIKE v\u00f5ti, mida kasutati Samsung Galaxy S8 nutitelefonis, anal\u00fc\u00fcsides Logitech Z120 USB-k\u00f5larite toiteindikaatori videoteavet, mis olid \u00fchendatud \u00fchte USB-keskusesse, mille kaudu laaditi nutitelefoni. Video salvestati iPhone 13 Pro Max kaameraga. Anal\u00fc\u00fcsi k\u00e4igus viidi nutitelefonis l\u00e4bi r\u00fcnnak, mis p\u00f5hines \u0161ifriteksti m\u00f5istatamisel (j\u00e4rkj\u00e4rguline proovimine, mis p\u00f5hineb salajase tekstiga maneede tegemisel ja selle de\u0161ifreerimise hankimisel), mille k\u00e4igus tehti 121 000 operatsiooni SIKE v\u00f5tmega.

\u200b
\r\n \"Vaata\r\n
<\/div>\r\n <\/div><\/center>
\n
Allikas: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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Meetod p\u00f5hineb sellel, et","canonical_url":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/vossozdanie-kriptograficheskih-klyuchej-na-osnove-analiza-video-s-led-indikatorom-pitaniya","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"et_EE","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u0412\u043e\u0441\u0441\u043e\u0437\u0434\u0430\u043d\u0438\u0435 \u043a\u0440\u0438\u043f\u0442\u043e\u0433\u0440\u0430\u0444\u0438\u0447\u0435\u0441\u043a\u0438\u0445 \u043a\u043b\u044e\u0447\u0435\u0439 \u043d\u0430 \u043e\u0441\u043d\u043e\u0432\u0435 \u0430\u043d\u0430\u043b\u0438\u0437\u0430 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\u0432","og:url":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/vossozdanie-kriptograficheskih-klyuchej-na-osnove-analiza-video-s-led-indikatorom-pitaniya","og:image":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:secure_url":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:width":350,"og:image:height":350,"article:published_time":"2023-06-14T01:10:17+00:00","article:modified_time":"2023-06-14T12:56:27+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":[],"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/posts\/108946","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/comments?post=108946"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/posts\/108946\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/media\/108947"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/media?parent=108946"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/categories?post=108946"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/tags?post=108946"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}