{"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\/sq\/blog\/novosti-interneta\/vossozdanie-kriptograficheskih-klyuchej-na-osnove-analiza-video-s-led-indikatorom-pitaniya","title":{"rendered":"Rikrijimi i \u00e7el\u00ebsave kriptografik\u00eb t\u00eb bazuar n\u00eb analiz\u00ebn e videos me LED-in indikator t\u00eb energjis\u00eb","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"
Nj\u00eb grup hulumtuesish nga universiteti David Ben-Gurion (Izrael) ka zhvilluar nj\u00eb metod\u00eb t\u00eb re sulmesh p\u00ebrmes kanaleve an\u00ebsore, e cila lejon rikuperimin e vlerave t\u00eb \u00e7elsave t\u00eb enkriptimit bazuar n\u00eb algoritmet ECDSA dhe SIKE p\u00ebrmes analiz\u00ebs s\u00eb videove nga nj\u00eb kamer\u00eb q\u00eb kap nj\u00eb tregues LED t\u00eb lexuesit t\u00eb kartave smart, ose t\u00eb nj\u00eb pajisjeje t\u00eb lidhur me nj\u00eb USB hub me nj\u00eb smartphone q\u00eb kryen operacione me \u00e7el\u00ebsin. <\/p>\n
Metoda bazohet n\u00eb faktin se gjat\u00eb procesit t\u00eb llogaritjeve, n\u00eb var\u00ebsi t\u00eb operacioneve q\u00eb ekzekutohen n\u00eb CPU, ndryshon konsumi i energjis\u00eb, \u00e7ka \u00e7on n\u00eb fluktuacione t\u00eb vogla n\u00eb shk\u00eblqimin e treguesve LED t\u00eb energjis\u00eb. Ndryshimi i shk\u00eblqimit, i cili korrelon drejtp\u00ebrdrejt me llogaritjet e kryera, mund t\u00eb kapet nga kamerat moderne digjitale t\u00eb mbik\u00ebqyrjes ose kamerat e smartphone-ve, dhe analiza e t\u00eb dh\u00ebnave nga kamera lejon rikuperimin e t\u00eb dh\u00ebnave q\u00eb p\u00ebrdoren gjat\u00eb llogaritjeve n\u00eb m\u00ebnyr\u00eb indirekte. <\/p>\n
P\u00ebr t\u00eb kap\u00ebrcyer kufizimin e sakt\u00ebsis\u00eb s\u00eb mostr\u00ebs, i lidhur me regjistrimin e vet\u00ebm 60 ose 120 kadrov\u00eb n\u00eb sekond\u00eb, \u00ebsht\u00eb aplikuar nj\u00eb mod t\u00eb paralaks\u00ebs temporale (rolling shutter) q\u00eb mb\u00ebshtetet nga disa kamera, e cila reflekton n\u00eb nj\u00eb kad\u00ebr pjes\u00eb t\u00eb ndryshme t\u00eb nj\u00eb objekti q\u00eb po ndryshon shpejt n\u00eb momente t\u00eb ndryshme t\u00eb koh\u00ebs. P\u00ebrdorimi i k\u00ebtij modeli lejon analizimin e deri n\u00eb 60 mij\u00eb matjesh t\u00eb ndri\u00e7imit n\u00eb sekond\u00eb gjat\u00eb xhirimit me kamer\u00ebn iPhone 13 Pro Max me nj\u00eb frekuenc\u00eb fillestare prej 120 FPS, n\u00ebse imazhi i treguesit LED mbulon t\u00eb gjith\u00eb kad\u00ebr (p\u00ebr af\u00ebrsimin para objektivit ishte vendosur nj\u00eb lente). Gjat\u00eb analiz\u00ebs u shqyrtua ndryshimi i komponent\u00ebve t\u00eb ve\u00e7ant\u00eb t\u00eb ngjyr\u00ebs (RGB) t\u00eb treguesit n\u00eb var\u00ebsi t\u00eb ndryshimit t\u00eb konsumit t\u00eb energjis\u00eb nga procesori.
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P\u00ebr rikuperimin e \u00e7el\u00ebsave u p\u00ebrdor\u00ebn metoda t\u00eb njohura sulmi Hertzbleed n\u00eb mekanizmin e inkapsulimit t\u00eb \u00e7el\u00ebsave SIKE dhe Minerva n\u00eb algoritmin e krijimit t\u00eb n\u00ebnshkrimit digjital ECDSA, t\u00eb adaptuara p\u00ebr t'u p\u00ebrdorur me nj\u00eb burim tjet\u00ebr pik\u00ebllimi p\u00ebrmes kanaleve t\u00eb huaja. Sulmi \u00ebsht\u00eb efektiv vet\u00ebm kur p\u00ebrdoren implementime t\u00eb prekshme ECDSA dhe SIKE n\u00eb bibliotekat Libgcrypt dhe PQCrypto-SIDH. P\u00ebr shembull, bibliotekat e prekshme nga sulmi p\u00ebrdoren n\u00eb smartphone Samsung Galaxy S8 dhe n\u00eb gjasht\u00eb karta t\u00eb blera n\u00eb Amazon nga pes\u00eb prodhues t\u00eb ndrysh\u00ebm. <\/p>\n
K\u00ebrkuesit kan\u00eb realizuar dy eksperimentet e suksesshme. N\u00eb t\u00eb parin, arrit\u00ebn t\u00eb rikuperonin nj\u00eb \u00e7el\u00ebs 256-bit ECDSA nga karta e smartit p\u00ebrmes analiz\u00ebs s\u00eb videos s\u00eb treguesit LED t\u00eb lexuesit t\u00eb kartave, e cila u xhirua nga nj\u00eb kamer\u00eb mbik\u00ebqyrjeje e lidhur me rrjetin global, e vendosur n\u00eb 16 metra larg pajisjes. Sulmi zuri rreth nj\u00eb or\u00eb dhe k\u00ebrkonte krijimin e 10 mij\u00eb n\u00ebnshkrimeve digjitale.
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N\u00eb eksperimentin e dyt\u00eb, arrit\u00ebm t\u00eb rikthenim \u00e7el\u00ebsin 378-bit SIKE, q\u00eb p\u00ebrdorej n\u00eb smartphone-n Samsung Galaxy S8, p\u00ebrmes analiz\u00ebs s\u00eb nj\u00eb videoje t\u00eb indikatorit t\u00eb energjis\u00eb t\u00eb kolonave Logitech Z120, t\u00eb lidhura te nj\u00eb USB hub, p\u00ebrmes t\u00eb cilit b\u00ebhej karikimi i smartphone-it. Videoja ishte regjistruar me kamer\u00ebn e smartphone-it iPhone 13 Pro Max. Gjat\u00eb analiz\u00ebs, nj\u00eb sulm bazohej n\u00eb tekstin e kriptuar (k\u00ebrkimi gradual duke manipuluar me tekstin e enkriptuar dhe duke e rikthyer at\u00eb), ku u kryen 121 mij\u00eb operacione me \u00e7el\u00ebsin SIKE.
![\"Rikrijimi](\"\/wp-content\/uploads\/2023\/06\/d506dd339096b0ef0914c5b7fefacb61.png\")
<\/center> <\/p>\n![\"Rikrijimi](\"\/wp-content\/uploads\/2023\/06\/fcf237335719b8ecf8641362dbceade8.png\")
<\/center> <\/p>\n![\"Luaj](\"https:\/\/img.youtube.com\/vi\/ITqBKRZvS3Y\/hqdefault.jpg\")
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