{"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\/fr\/avec-un-ordinateur-quantique-a-une-cle-privee-en-45-minutes\/","title":{"rendered":"Avec un ordinateur quantique, vous pouvez obtenir une cl\u00e9 priv\u00e9e en 45 minutes."},"content":{"rendered":"<p>Lelli a utilis\u00e9 un ordinateur quantique accessible au public dans le cloud pour d\u00e9river la cl\u00e9 priv\u00e9e correspondante \u00e0 partir de la cl\u00e9 publique en environ 45 minutes. Il a utilis\u00e9 une variante de l&#039;algorithme de Shor qui cible le probl\u00e8me du logarithme discret sur les courbes elliptiques (ECDLP), la base math\u00e9matique sur laquelle reposent les signatures num\u00e9riques de Bitcoin et d&#039;Ethereum.<\/p>\n\n\n\n<p>Cette performance repr\u00e9sente une augmentation de 512 fois de la complexit\u00e9 de l&#039;espace de recherche par rapport au pr\u00e9c\u00e9dent record (cl\u00e9 de 6 bits) \u00e9tabli par Steve Tippeconnic en septembre 2025.<\/p>\n\n\n\n<p><strong>Le Bitcoin est-il d\u00e9j\u00e0 menac\u00e9 ?<\/strong><\/p>\n\n\n\n<p>Bien qu&#039;il s&#039;agisse d&#039;une avanc\u00e9e scientifique significative, la s\u00e9curit\u00e9 actuelle des cryptomonnaies demeure solide. La diff\u00e9rence entre les cl\u00e9s de 15 bits et de 256 bits utilis\u00e9es par Bitcoin est \u00e9norme\u00a0: une cl\u00e9 de 15 bits ne poss\u00e8de que 32\u00a0768 combinaisons possibles, tandis qu&#039;une cl\u00e9 de 256 bits en offre un nombre inimaginable (environ $10^{77}). Cela n\u00e9cessiterait des millions de qubits logiques stables.<\/p>\n\n\n\n<p>Lelli n&#039;avait besoin que de 27 qubits physiques pour l&#039;attaque, alors que les estimations pour casser une v\u00e9ritable cl\u00e9 de 256 bits varient de 10 000 \u00e0 500 000 qubits physiques, en fonction de l&#039;architecture mat\u00e9rielle.<\/p>\n\n\n\n<p><strong>Un avertissement pour l&#039;avenir<\/strong><\/p>\n\n\n\n<p>Alex Pruden, PDG de Project Eleven, a d\u00e9clar\u00e9 que ce r\u00e9sultat t\u00e9moigne de la rapidit\u00e9 des progr\u00e8s. Le fait que l&#039;attaque ait \u00e9t\u00e9 men\u00e9e sur du mat\u00e9riel h\u00e9berg\u00e9 dans le cloud, et non dans un laboratoire national ferm\u00e9, d\u00e9montre que les obstacles \u00e0 la r\u00e9alisation concr\u00e8te de telles attaques s&#039;amenuisent rapidement. Des g\u00e9ants de la technologie comme Google se sont d\u00e9j\u00e0 fix\u00e9 pour objectif d&#039;atteindre la s\u00e9curit\u00e9 quantique d&#039;ici 2029, ce qui souligne l&#039;urgence de la transition vers la cryptographie post-quantique.<\/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\/fr\/wp-json\/wp\/v2\/posts\/7511\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\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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