{"id":159698,"date":"2025-07-19T19:15:00","date_gmt":"2025-07-19T19:15:00","guid":{"rendered":"https:\/\/cryptonews.com\/fr\/?p=159698"},"modified":"2025-07-19T19:15:00","modified_gmt":"2025-07-19T19:15:00","slug":"ordinateur-quantique-vs-cryptomonnaie-10-ans-pour-detruire-la-blockchain","status":"publish","type":"post","link":"https:\/\/cryptonews.com\/fr\/news\/ordinateur-quantique-vs-cryptomonnaie-10-ans-pour-detruire-la-blockchain\/","title":{"rendered":"Ordinateur Quantique vs Cryptomonnaie : 10 ans pour d\u00e9truire la Blockchain\u00a0"},"content":{"rendered":"<p>Et si la plus grande menace pour vos Bitcoins ne venait pas des r\u00e9gulateurs, ni des hackeurs, mais d\u2019une machine ? Et pour cause, l\u2019ordinateur quantique menace de <strong>briser la s\u00e9curit\u00e9 jug\u00e9e inviolable<\/strong> de la blockchain. Un sc\u00e9nario de plus en plus cr\u00e9dible selon Capgemini, Deloitte ou encore les d\u00e9veloppeurs de Bitcoin eux-m\u00eames. De quoi s\u2019agit-il ? <\/p><h2 class=\"wp-block-heading\">Une alerte venue d\u2019en haut : la menace de Shor <\/h2><span class=\"replacer\"><\/span><p>Le dernier <a href=\"https:\/\/www.capgemini.com\/insights\/research-library\/post-quantum-crypto\/\" target=\"_blank\" rel=\"noreferrer noopener\">rapport choc du cabinet Capgemini<\/a> a secou\u00e9 les milieux financiers et technologiques. En cause, un risque d\u2019obsolescence port\u00e9e par l\u2019<strong>\u00e9volution des ordinateurs quantiques<\/strong>.  <\/p><p>Les syst\u00e8mes de cryptographie \u00e0 cl\u00e9 publique bas\u00e9s sur l\u2019Elliptic Curve Cryptography, piliers de la s\u00e9curit\u00e9 blockchain, en sont les <strong>principales cibles<\/strong>. Certes, le rapport de Capgemini ne cite pas nomm\u00e9ment Bitcoin. Mais l\u2019implication est claire. <\/p><figure class=\"wp-block-embed is-type-rich is-provider-twitter wp-block-embed-twitter\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"twitter-tweet\" data-width=\"550\" data-dnt=\"true\"><p lang=\"en\" dir=\"ltr\">\ud83d\udea8BlackRock Sounds the Quantum Alarm : Bitcoin Is Threatened, Naoris Deploys the Ultimate Defense<br><br>\u201cWe are standing at the precipice of a crypto apocalypse,\u201d warns Dr. Elena Vertsova, quantum physics pioneer at MIT. \u201cThe quantum storm isn\u2019t coming\u2014it\u2019s already here, and most\u2026 <a href=\"https:\/\/t.co\/vkuOzIAr1e\">pic.twitter.com\/vkuOzIAr1e<\/a><\/p>&mdash; Naoris Protocol (@NaorisProtocol) <a href=\"https:\/\/twitter.com\/NaorisProtocol\/status\/1925575843230683471?ref_src=twsrc%5Etfw\">May 22, 2025<\/a><\/blockquote><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script>\n<\/div><\/figure><p>Avec la bonne technologie, les <strong>cl\u00e9s priv\u00e9es<\/strong> des portefeuilles pourraient \u00eatre d\u00e9chiffr\u00e9es, rendant vuln\u00e9rables des millions de cryptomonnaies. Or le Bitcoin est la plus pr\u00e9cieuse d\u2019entre toutes. Par cons\u00e9quent, il va sans dire qu\u2019il sera une cible privil\u00e9gi\u00e9e.  <\/p><p>C\u2019est <strong>l\u2019algorithme de Shor<\/strong>, bien connu des cryptographes, qui constitue la menace. Il est capable de r\u00e9soudre les \u00e9quations math\u00e9matiques sur lesquelles reposent les cl\u00e9s priv\u00e9es. C\u2019est donc lui menace vraiment la pertinence de l\u2019algorithme Rivest-Shamir-Adleman (RSA). Or, il s&#8217;agit justement du protocole de chiffrement utilis\u00e9 par Bitcoin. <\/p><h2 class=\"wp-block-heading\">Un risque d&#8217;effondrement syst\u00e9mique : 4 millions de BTC en danger<\/h2><span class=\"replacer\"><\/span><figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/cimg.co\/wp-content\/uploads\/sites\/3\/2025\/07\/19190109\/ChatGPT-Image-19-juil.-2025-20_59_48-1-1024x683.jpg\" alt=\"\" class=\"wp-image-159702\" srcset=\"https:\/\/cimg.co\/wp-content\/uploads\/sites\/3\/2025\/07\/19190109\/ChatGPT-Image-19-juil.-2025-20_59_48-1-1024x683.jpg 1024w, https:\/\/cimg.co\/wp-content\/uploads\/sites\/3\/2025\/07\/19190109\/ChatGPT-Image-19-juil.-2025-20_59_48-1-300x200.jpg 300w, https:\/\/cimg.co\/wp-content\/uploads\/sites\/3\/2025\/07\/19190109\/ChatGPT-Image-19-juil.-2025-20_59_48-1-768x512.jpg 768w, https:\/\/cimg.co\/wp-content\/uploads\/sites\/3\/2025\/07\/19190109\/ChatGPT-Image-19-juil.-2025-20_59_48-1-450x300.jpg 450w, https:\/\/cimg.co\/wp-content\/uploads\/sites\/3\/2025\/07\/19190109\/ChatGPT-Image-19-juil.-2025-20_59_48-1.jpg 1536w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\"><\/figure><p>Selon un rapport d&#8217;analystes, <strong>pr\u00e8s de 25 % des BTC<\/strong> en circulation ont d\u00e9j\u00e0 r\u00e9v\u00e9l\u00e9 leur cl\u00e9 publique via des transactions. On retrouve dans ce d\u00e9compte : <\/p><ul class=\"wp-block-list\">\n<li>Des portefeuilles inactifs depuis des ann\u00e9es.<\/li>\n\n\n\n<li>Des utilisateurs peu vigilants.<\/li>\n\n\n\n<li>Et m\u00eame <a href=\"https:\/\/cryptonews.com\/fr\/tags\/satoshi-nakamoto\/page\/2\/\">le million de BTC<\/a> suppos\u00e9s appartenir \u00e0 Satoshi Nakamoto.<\/li>\n<\/ul><p>En cas d\u2019attaque par un ordinateur quantique, il est quasi certain que la cl\u00e9 priv\u00e9e soit r\u00e9v\u00e9l\u00e9e avec pr\u00e9cision. Selon une \u00e9tude de Deloitte, un piratage massif par ordinateur quantique entra\u00eenerait une <strong>liquidation imm\u00e9diate des BTC<\/strong> compromis. <\/p><p>Le cas \u00e9ch\u00e9ant, le BTC verra probablement son cours s\u2019effondrer dans un mouvement de panique g\u00e9n\u00e9ralis\u00e9e et la plus grande crise de confiance de l\u2019histoire de la cryptosph\u00e8re. Un sc\u00e9nario eschatologique d\u00e9j\u00e0 connu sous le nom \u201c<strong>Q\u2011Day<\/strong>\u201d ou le jour o\u00f9 la blockchain explose.  <\/p><h2 class=\"wp-block-heading\">Comment s\u2019adaptent les entreprises ?<\/h2><span class=\"replacer\"><\/span><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"579\" src=\"https:\/\/cimg.co\/p\/no_image.svg\" alt=\"\" class=\"wp-image-159700 lazyload\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" data-src=\"https:\/\/cimg.co\/wp-content\/uploads\/sites\/3\/2025\/07\/19185318\/bitcoin-8629503_1280-1-1024x579.jpg\" data-srcset=\"https:\/\/cimg.co\/wp-content\/uploads\/sites\/3\/2025\/07\/19185318\/bitcoin-8629503_1280-1-1024x579.jpg 1024w, https:\/\/cimg.co\/wp-content\/uploads\/sites\/3\/2025\/07\/19185318\/bitcoin-8629503_1280-1-300x170.jpg 300w, https:\/\/cimg.co\/wp-content\/uploads\/sites\/3\/2025\/07\/19185318\/bitcoin-8629503_1280-1-768x434.jpg 768w, https:\/\/cimg.co\/wp-content\/uploads\/sites\/3\/2025\/07\/19185318\/bitcoin-8629503_1280-1-450x255.jpg 450w, https:\/\/cimg.co\/wp-content\/uploads\/sites\/3\/2025\/07\/19185318\/bitcoin-8629503_1280-1.jpg 1280w\"><\/figure><\/div><p>Capgemini a interrog\u00e9 1 000 grandes entreprises dans 13 pays. R\u00e9sultat, 70 % d\u2019entre elles annoncent une migration vers des protocoles post-quantiques et r\u00e9ponse. Mais dans les faits, seulement <strong>15 % sont pr\u00eates <\/strong>et moins de 2 % des budgets cybers\u00e9curit\u00e9 sont allou\u00e9s \u00e0 cette transition.  <\/p><p>Un manque d\u2019anticipation pourrait co\u00fbter cher si la menace devient r\u00e9alit\u00e9 plus t\u00f4t que pr\u00e9vu. En effet, les estimations du temps restant avant impact varient. Certains experts parlent de <strong>10 \u00e0 15 ans<\/strong>, d\u2019autres avancent la date de 2030, voire avant. Quoi qu\u2019il en soit, c\u2019est d\u00e8s maintenant qu\u2019il faut commencer \u00e0 migrer, alerter et \u00e9duquer.  <\/p><h2 class=\"wp-block-heading\">Comment se prot\u00e9ger en attendant ?<\/h2><span class=\"replacer\"><\/span><p>La menace quantique relance, une nouvelle fois, le d\u00e9bat autour des <strong>solutions de stockage<\/strong> de crypto-monnaie. Bien que ce soit l\u2019ensemble du secteur qui doit y faire face, certaines zones sont plus expos\u00e9es que d\u2019autres. <\/p><p>Dans cette perspective, les solutions de stockage en ligne sont les plus risqu\u00e9es. L\u2019\u00e9ventualit\u00e9 du Q-Day remet donc en \u00e9vidence, l\u2019int\u00e9r\u00eat de garder son <strong>portefeuille hors ligne<\/strong>. C\u2019est d\u2019ailleurs la solution vers laquelle se tournent les plateformes d\u2019\u00e9change et autres sites offrant des solutions de stockage. <\/p><p>Mais pour plus de tranquillit\u00e9 d\u2019esprit, des solutions pour particulier comme <strong><a href=\"https:\/\/fr.cryptonews.com\/ext\/bestwallet\/\" rel=\" sponsored nofollow\">Best Wallet<\/a><\/strong> ont \u00e9t\u00e9 mises au point. C\u2019est un portefeuille non-custodial innovant, con\u00e7u pour offrir \u00e0 ses utilisateurs une s\u00e9curit\u00e9 de niveau institutionnel (via Fireblocks). En outre, il garantit anonymat et contr\u00f4le complet sur les cl\u00e9s priv\u00e9es de l\u2019utilisateur.   <\/p><p>Disponible sur <strong>plus de 60 blockchains<\/strong>, Best Wallet permet de stocker, envoyer ou swapper des crypto-actifs. Mais il offre \u00e9galement des fonctionnalit\u00e9s avanc\u00e9es comme l\u2019achat par carte bancaire, le staking, et m\u00eame un launchpad de tokens. Une solution tout-en-un qui offre une passerelle s\u00e9curis\u00e9e et pratique entre l\u2019univers traditionnel et les innovations Web3.<\/p><p><\/p><div style=\"background: #920047;margin: auto;width: 50%;text-align: center;padding: 8px;border-radius: 5px;background-image: linear-gradient(107deg,#930046,#59008a);color: white;padding-left: 1em;padding-right: 1em;font-size: 16px\"><a style=\"text-decoration:none;color:white\" href=\"https:\/\/fr.cryptonews.com\/ext\/bestwallet\/\" target=\"_blank\" rel=\"nofollow noindex\">D\u00e9couvrez Best Wallet<\/a><\/div><p><\/p><p class=\"disclaimer-rw\" style=\"text-align: center\"><em>Les crypto-actifs repr\u00e9sentent un investissement risqu\u00e9.<\/em><\/p><hr class=\"wp-block-separator has-alpha-channel-opacity\"><p>Source : <a href=\"https:\/\/www.deloitte.com\/nl\/en\/services\/risk-advisory\/perspectives\/quantum-computers-and-the-bitcoin-blockchain.html\" target=\"_blank\" rel=\"noreferrer noopener\">Deloitte<\/a><\/p><hr class=\"wp-block-separator has-alpha-channel-opacity\"><p>Sur le m\u00eame sujet :<\/p><ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/cryptonews.com\/fr\/news\/vitesse-solana-securite-btc-meilleur-deux-mondes-bitcoin-hyper\/\">Bitcoin Hyper : Vitesse Solana et s\u00e9curit\u00e9 BTC<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/cryptonews.com\/fr\/news\/blockchain-danger-arrivee-super-intelligence\/\">La blockchain en danger face \u00e0 l\u2019arriv\u00e9e d\u2019une superintelligence ?<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/cryptonews.com\/fr\/news\/hacks-crypto-2025\/\">2,1 milliards de dollars de hack crypto : 2025, ann\u00e9e record en seulement 6 mois ?<\/a><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Et si la plus grande menace pour vos Bitcoins ne venait pas des r\u00e9gulateurs, ni des hackeurs, mais d\u2019une machine ? Et pour cause, l\u2019ordinateur quantique menace de briser la s\u00e9curit\u00e9 jug\u00e9e inviolable de la blockchain. Un sc\u00e9nario de plus en plus cr\u00e9dible selon Capgemini, Deloitte ou encore les d\u00e9veloppeurs de Bitcoin eux-m\u00eames. De quoi [&hellip;]<\/p>\n","protected":false},"author":663,"featured_media":159703,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[9,1],"tags":[],"editors":[2554],"sponsored_companies":[],"class_list":["post-159698","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blockchain-news","category-news","editors-ronan-gaillard"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Ordinateur Quantique vs Bitcoin : le compte \u00e0 rebours a commenc\u00e9<\/title>\n<meta name=\"description\" content=\"L&#039;ordinateur quantique pourrait casser la s\u00e9curit\u00e9 du Bitcoin d\u2019ici 10 ans. Plus de 4 millions de BTC d\u00e9j\u00e0 en danger. 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Voici pourquoi ?","twitter_image":"https:\/\/cimg.co\/wp-content\/uploads\/sites\/3\/2025\/07\/19190130\/1752951690-cryptonews-25.jpg","schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"NewsArticle","@id":"https:\/\/cryptonews.com\/fr\/news\/ordinateur-quantique-vs-cryptomonnaie-10-ans-pour-detruire-la-blockchain\/#article","isPartOf":{"@id":"https:\/\/cryptonews.com\/fr\/news\/ordinateur-quantique-vs-cryptomonnaie-10-ans-pour-detruire-la-blockchain\/"},"author":{"name":"Ronan Gaillard","@id":"https:\/\/cryptonews.com\/fr\/#\/schema\/person\/e78d0af0c40e9bd57dc648cd44641f43"},"headline":"Ordinateur Quantique vs Cryptomonnaie : 10 ans pour d\u00e9truire la Blockchain\u00a0","datePublished":"2025-07-19T19:15:00+00:00","mainEntityOfPage":{"@id":"https:\/\/cryptonews.com\/fr\/news\/ordinateur-quantique-vs-cryptomonnaie-10-ans-pour-detruire-la-blockchain\/"},"wordCount":800,"publisher":{"@id":"https:\/\/cryptonews.com\/fr\/#organization"},"image":{"@id":"https:\/\/cryptonews.com\/fr\/news\/ordinateur-quantique-vs-cryptomonnaie-10-ans-pour-detruire-la-blockchain\/#primaryimage"},"thumbnailUrl":"https:\/\/cimg.co\/wp-content\/uploads\/sites\/3\/2025\/07\/19190130\/1752951690-cryptonews-25.jpg","articleSection":["Actualit\u00e9s Blockchain","News"],"inLanguage":"fr-FR","copyrightYear":"2025","copyrightHolder":{"@id":"https:\/\/cryptonews.com\/#organization"}},{"@type":"WebPage","@id":"https:\/\/cryptonews.com\/fr\/news\/ordinateur-quantique-vs-cryptomonnaie-10-ans-pour-detruire-la-blockchain\/","url":"https:\/\/cryptonews.com\/fr\/news\/ordinateur-quantique-vs-cryptomonnaie-10-ans-pour-detruire-la-blockchain\/","name":"Ordinateur Quantique vs Bitcoin : le compte \u00e0 rebours a commenc\u00e9","isPartOf":{"@id":"https:\/\/cryptonews.com\/fr\/#website"},"primaryImageOfPage":{"@id":"https:\/\/cryptonews.com\/fr\/news\/ordinateur-quantique-vs-cryptomonnaie-10-ans-pour-detruire-la-blockchain\/#primaryimage"},"image":{"@id":"https:\/\/cryptonews.com\/fr\/news\/ordinateur-quantique-vs-cryptomonnaie-10-ans-pour-detruire-la-blockchain\/#primaryimage"},"thumbnailUrl":"https:\/\/cimg.co\/wp-content\/uploads\/sites\/3\/2025\/07\/19190130\/1752951690-cryptonews-25.jpg","datePublished":"2025-07-19T19:15:00+00:00","description":"L'ordinateur quantique pourrait casser la s\u00e9curit\u00e9 du Bitcoin d\u2019ici 10 ans. Plus de 4 millions de BTC d\u00e9j\u00e0 en danger. Voici pourquoi ?","breadcrumb":{"@id":"https:\/\/cryptonews.com\/fr\/news\/ordinateur-quantique-vs-cryptomonnaie-10-ans-pour-detruire-la-blockchain\/#breadcrumb"},"inLanguage":"fr-FR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/cryptonews.com\/fr\/news\/ordinateur-quantique-vs-cryptomonnaie-10-ans-pour-detruire-la-blockchain\/"]}],"author":[]},{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/cryptonews.com\/fr\/news\/ordinateur-quantique-vs-cryptomonnaie-10-ans-pour-detruire-la-blockchain\/#primaryimage","url":"https:\/\/cimg.co\/wp-content\/uploads\/sites\/3\/2025\/07\/19190130\/1752951690-cryptonews-25.jpg","contentUrl":"https:\/\/cimg.co\/wp-content\/uploads\/sites\/3\/2025\/07\/19190130\/1752951690-cryptonews-25.jpg","width":1200,"height":800,"caption":"Ardinateur Quantique menace s\u00e9curit\u00e9 Blockchain"},{"@type":"BreadcrumbList","@id":"https:\/\/cryptonews.com\/fr\/news\/ordinateur-quantique-vs-cryptomonnaie-10-ans-pour-detruire-la-blockchain\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/cryptonews.com\/fr\/"},{"@type":"ListItem","position":2,"name":"Ordinateur Quantique vs Cryptomonnaie : 10 ans pour d\u00e9truire la Blockchain\u00a0"}]},{"@type":"WebSite","@id":"https:\/\/cryptonews.com\/fr\/#website","url":"https:\/\/cryptonews.com\/fr\/","name":"Cryptonews","description":"","publisher":{"@id":"https:\/\/cryptonews.com\/fr\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/cryptonews.com\/fr\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"fr-FR"},{"@type":"Organization","@id":"https:\/\/cryptonews.com\/fr\/#organization","name":"Cryptonews France","url":"https:\/\/cryptonews.com\/fr\/","logo":{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/cryptonews.com\/fr\/#\/schema\/logo\/image\/","url":"https:\/\/cryptonews.com\/wp-content\/uploads\/sites\/3\/2023\/09\/4.jpg","contentUrl":"https:\/\/cryptonews.com\/wp-content\/uploads\/sites\/3\/2023\/09\/4.jpg","width":1669,"height":874,"caption":"Cryptonews France"},"image":{"@id":"https:\/\/cryptonews.com\/fr\/#\/schema\/logo\/image\/"}}]}},"_links":{"self":[{"href":"https:\/\/cryptonews.com\/fr\/wp-json\/wp\/v2\/posts\/159698","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cryptonews.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cryptonews.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cryptonews.com\/fr\/wp-json\/wp\/v2\/users\/663"}],"replies":[{"embeddable":true,"href":"https:\/\/cryptonews.com\/fr\/wp-json\/wp\/v2\/comments?post=159698"}],"version-history":[{"count":3,"href":"https:\/\/cryptonews.com\/fr\/wp-json\/wp\/v2\/posts\/159698\/revisions"}],"predecessor-version":[{"id":159706,"href":"https:\/\/cryptonews.com\/fr\/wp-json\/wp\/v2\/posts\/159698\/revisions\/159706"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cryptonews.com\/fr\/wp-json\/wp\/v2\/media\/159703"}],"wp:attachment":[{"href":"https:\/\/cryptonews.com\/fr\/wp-json\/wp\/v2\/media?parent=159698"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cryptonews.com\/fr\/wp-json\/wp\/v2\/categories?post=159698"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cryptonews.com\/fr\/wp-json\/wp\/v2\/tags?post=159698"},{"taxonomy":"editors","embeddable":true,"href":"https:\/\/cryptonews.com\/fr\/wp-json\/wp\/v2\/editors?post=159698"},{"taxonomy":"sponsored_companies","embeddable":true,"href":"https:\/\/cryptonews.com\/fr\/wp-json\/wp\/v2\/sponsored_companies?post=159698"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}