{"id":7511,"date":"2026-04-25T08:58:32","date_gmt":"2026-04-25T06:58:32","guid":{"rendered":"https:\/\/viva.racunalniske-novice.com\/s-kvantnim-racunalnikom-do-zasebnega-kljuca-v-45-minutah\/"},"modified":"2026-04-25T08:58:32","modified_gmt":"2026-04-25T06:58:32","slug":"s-kvantnim-racunalnikom-do-zasebnega-kljuca-v-45-minutah","status":"publish","type":"post","link":"https:\/\/viva.racunalniske-novice.com\/hr\/s-kvantnim-racunalom-do-privatnog-kljuca-za-45-minuta\/","title":{"rendered":"S kvantnim ra\u010dunalom mo\u017eete dobiti privatni klju\u010d za 45 minuta"},"content":{"rendered":"<p>Lelli je koristio javno dostupno kvantno ra\u010dunalo u oblaku kako bi iz javnog klju\u010da izveo odgovaraju\u0107i privatni klju\u010d za otprilike 45 minuta. Koristio je varijaciju Shorovog algoritma koja cilja na problem diskretnog logaritma elipti\u010dne krivulje (ECDLP), matemati\u010dku osnovu na kojoj se temelje digitalni potpisi Bitcoina i Ethereuma.<\/p>\n\n\n\n<p>Ovo postignu\u0107e predstavlja 512 puta ve\u0107e pove\u0107anje slo\u017eenosti prostora pretra\u017eivanja u usporedbi s prethodnim rekordom (6-bitni klju\u010d) koji je postavio Steve Tippeconnic u rujnu 2025.<\/p>\n\n\n\n<p><strong>Je li Bitcoin ve\u0107 u opasnosti?<\/strong><\/p>\n\n\n\n<p>Iako je ovo zna\u010dajan znanstveni napredak, trenutna sigurnost kriptovaluta ostaje solidna. Razlika izme\u0111u 15-bitnih i 256-bitnih klju\u010deva koje Bitcoin zapravo koristi je ogromna: 15-bitni klju\u010d ima samo 32 768 mogu\u0107ih kombinacija, dok 256-bitni klju\u010d ima nezamislivo ve\u0107i broj kombinacija (oko $10^{77}). To bi zahtijevalo milijune stabilnih logi\u010dkih kubita.<\/p>\n\n\n\n<p>Lelliju je za napad trebalo samo 27 fizi\u010dkih kubita, dok se procjene za probijanje pravog 256-bitnog klju\u010da kre\u0107u od 10 000 do 500 000 fizi\u010dkih kubita, ovisno o hardverskoj arhitekturi.<\/p>\n\n\n\n<p><strong>Upozorenje za budu\u0107nost<\/strong><\/p>\n\n\n\n<p>Alex Pruden, izvr\u0161ni direktor tvrtke Project Eleven, rekao je da je rezultat podsjetnik na brzinu napretka. \u010cinjenica da je napad izveden na hardveru u oblaku, a ne u zatvorenom nacionalnom laboratoriju, pokazuje da se prepreke za provo\u0111enje takvih napada u praksi brzo smanjuju. Tehnolo\u0161ki divovi poput Googlea ve\u0107 su postavili cilj da do 2029. postanu kvantno sigurni, \u0161to sugerira hitnost prijelaza na postkvantnu kriptografiju.<\/p>\n<br\/>","protected":false},"excerpt":{"rendered":"<p>Lelli je za napad uporabil javno dostopen kvantni ra\u010dunalnik v oblaku, s katerim je v pribli\u017eno 45 minutah iz javnega klju\u010da izpeljal ustrezen zasebni klju\u010d. Pri tem je uporabil variacijo Shorovega algoritma, ki cilja na problem diskretnega logaritma elipti\u010dne krivulje (ECDLP) oziroma matemati\u010dno osnovo, na kateri temeljijo digitalni podpisi Bitcoina in Ethereuma. Ta dose\u017eek predstavlja [&hellip;]<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[16],"tags":[642],"class_list":["post-7511","post","type-post","status-publish","format-standard","hentry","category-oprema","tag-bitcoin"],"acf":{"subtitle":"Samostojni raziskovalec Giancarlo Lelli je postavil nov mejnik na podro\u010dju kvantnega ra\u010dunalni\u0161tva in kriptografije, potem ko je uspe\u0161no razbil 15-bitni klju\u010d elipti\u010dne krivulje (ECC). Za ta dose\u017eek mu je podjetje Project Eleven podelilo nagrado \"Q-Day Prize\" v vrednosti enega bitcoina (pribli\u017eno 77.000 evrov).","heading":"","summary":"Raziskovalec Giancarlo Lelli je s kvantnim ra\u010dunalnikom razbil 15-bitni kriptografski klju\u010d in prejel 1 BTC nagrade. \u010ceprav dose\u017eek ne ogro\u017ea Bitcoina neposredno, nakazuje na hitro zmanj\u0161evanje razkoraka med teorijo in prakti\u010dno uporabo kvantnih napadov.","thumbnail_small":"https:\/\/racunalniske-novice.com\/wp-content\/uploads\/2025\/06\/Quantum-Tiny-board-1-560x315.webp","thumbnail_large":"https:\/\/racunalniske-novice.com\/wp-content\/uploads\/2025\/06\/Quantum-Tiny-board-1-1024x811.webp","thumbnail_caption":"","gallery":"","video_gallery":[{"youtube_url":"https:\/\/www.youtube.com\/shorts\/IQq_0h68ELQ"}],"author":"","links":[{"title":"NYT","url":""}],"sources":null,"skip_language":[]},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>S kvantnim ra\u010dunalnikom do zasebnega klju\u010da v 45 minutah - Ra\u010dunalni\u0161ke novice<\/title>\n<meta name=\"description\" content=\"Raziskovalec Giancarlo Lelli je s kvantnim ra\u010dunalnikom razbil 15-bitni kriptografski klju\u010d in prejel 1 BTC nagrade. \u010ceprav dose\u017eek ne ogro\u017ea Bitcoina neposredno, nakazuje na hitro zmanj\u0161evanje razkor\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/viva.racunalniske-novice.com\/hr\/wp-json\/wp\/v2\/posts\/7511\" \/>\n<meta property=\"og:locale\" content=\"hr_HR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"S kvantnim ra\u010dunalnikom do zasebnega klju\u010da v 45 minutah - Ra\u010dunalni\u0161ke novice\" \/>\n<meta property=\"og:description\" content=\"Lelli je za napad uporabil javno dostopen kvantni ra\u010dunalnik v oblaku, s katerim je v pribli\u017eno 45 minutah iz javnega klju\u010da izpeljal ustrezen zasebni klju\u010d. Pri tem je uporabil variacijo Shorovega algoritma, ki cilja na problem diskretnega logaritma elipti\u010dne krivulje (ECDLP) oziroma matemati\u010dno osnovo, na kateri temeljijo digitalni podpisi Bitcoina in Ethereuma. 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