{"id":7840,"date":"2025-08-29T10:00:46","date_gmt":"2025-08-29T10:00:46","guid":{"rendered":"https:\/\/icobench.com\/fr\/?p=7840"},"modified":"2025-08-29T09:58:54","modified_gmt":"2025-08-29T09:58:54","slug":"vitalik-buterin-ordinateur-quantique-cryptographie-2030","status":"publish","type":"post","link":"https:\/\/icobench.com\/fr\/news\/vitalik-buterin-ordinateur-quantique-cryptographie-2030\/","title":{"rendered":"Vitalik Buterin : 20 % de risque que le quantique casse la crypto d\u2019ici 2030"},"content":{"rendered":"<p>L\u2019inventeur d\u2019Ethereum, <strong>Vitalik Buterin<\/strong>, alerte sur une menace encore lointaine mais bien r\u00e9elle : l\u2019ordinateur quantique. Selon lui, il existe <strong>20 % de chances que cette technologie parvienne \u00e0 briser les syst\u00e8mes cryptographiques actuels d\u2019ici 2030<\/strong>. Si ce sc\u00e9nario venait \u00e0 se r\u00e9aliser, l\u2019impact d\u00e9passerait largement le secteur des cryptomonnaies et pourrait fragiliser l\u2019ensemble de notre soci\u00e9t\u00e9 num\u00e9rique.<\/p>\n<h2><span id=\"vitalik_buterin_met_en_garde_sur_lere_quantique\">Vitalik Buterin met en garde sur l\u2019\u00e8re quantique<\/span><\/h2>\n<p>Dans une publication r\u00e9cente, <a href=\"https:\/\/fr.wikipedia.org\/wiki\/Vitalik_Buterin\" target=\"_blank\" rel=\"noopener noreferrer\">Vitalik Buterin<\/a> a partag\u00e9 ses r\u00e9flexions sur l\u2019avenir de la s\u00e9curit\u00e9 informatique. D\u2019apr\u00e8s lui, il faut prendre au s\u00e9rieux l\u2019avanc\u00e9e rapide des recherches en calcul quantique. Il estime <strong>une probabilit\u00e9 d\u2019une sur cinq<\/strong> que d\u2019ici 2030, un ordinateur quantique assez puissant parvienne \u00e0 casser des syst\u00e8mes cryptographiques comme le RSA ou l\u2019ECDSA, deux piliers de la s\u00e9curit\u00e9 moderne.<\/p>\n<p>Mais la menace ne vise pas uniquement Ethereum ou Bitcoin. <strong>Si la cryptographie actuelle tombe, c\u2019est tout l\u2019\u00e9difice num\u00e9rique mondial qui s\u2019effondre<\/strong>. Cela inclut les banques, les gouvernements, les messageries s\u00e9curis\u00e9es et m\u00eame les infrastructures critiques.<\/p>\n<blockquote class=\"twitter-tweet\" data-width=\"550\" data-dnt=\"true\">\n<p lang=\"en\" dir=\"ltr\">Metaculus's median date for when quantum computers will break modern cryptography is 2040:<a href=\"https:\/\/t.co\/Li8ni8A9Ox\" target=\"_blank\" rel=\"noopener noreferrer\">https:\/\/t.co\/Li8ni8A9Ox<\/a><\/p>\n<p>Seemingly about a 20% chance it will be before end of 2030.<\/p>\n<p>\u2014 vitalik.eth (@VitalikButerin) <a href=\"https:\/\/twitter.com\/VitalikButerin\/status\/1960844208790757894?ref_src=twsrc%5Etfw\" target=\"_blank\" rel=\"noopener noreferrer\">August 27, 2025<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<h2><span id=\"une_menace_bien_plus_large_que_la_crypto\">Une menace bien plus large que la crypto<\/span><\/h2>\n<p>Les ordinateurs quantiques exploitent des propri\u00e9t\u00e9s de la physique quantique pour r\u00e9soudre des probl\u00e8mes aujourd\u2019hui insolubles avec les machines classiques. L\u2019algorithme de Shor, par exemple, pourrait en th\u00e9orie factoriser d\u2019\u00e9normes cl\u00e9s cryptographiques en quelques secondes.<\/p>\n<p>Actuellement, nos syst\u00e8mes financiers, nos sites internet et nos blockchains reposent sur la confiance dans ces cl\u00e9s impossibles \u00e0 casser. Si cette barri\u00e8re dispara\u00eet, <strong>les pirates pourraient falsifier des transactions, usurper des identit\u00e9s ou vider des portefeuilles num\u00e9riques entiers<\/strong>.<\/p>\n<p>La crypto ne serait qu\u2019une victime parmi d\u2019autres. Des services publics essentiels comme les h\u00f4pitaux, les r\u00e9seaux \u00e9lectriques ou les satellites risqueraient aussi de subir des attaques. <strong>L\u2019impact serait donc global<\/strong>, touchant \u00e0 la fois la finance, la d\u00e9fense et la vie quotidienne des citoyens.<\/p>\n<h2><span id=\"les_pistes_pour_se_proteger\">Les pistes pour se prot\u00e9ger<\/span><\/h2>\n<p>Heureusement, le monde acad\u00e9mique et les d\u00e9veloppeurs travaillent d\u00e9j\u00e0 sur la <strong>cryptographie post-quantique<\/strong>. L\u2019objectif est de cr\u00e9er des syst\u00e8mes r\u00e9sistants aux attaques quantiques, capables de s\u00e9curiser les communications m\u00eame face \u00e0 une machine extr\u00eamement puissante.<\/p>\n<p>Vitalik Buterin a d\u2019ailleurs rappel\u00e9 que l\u2019\u00e9cosyst\u00e8me <a href=\"https:\/\/icobench.com\/fr\/news\/ethereum-wall-street-choisit-sa-crypto\/\" rel=\"\">Ethereum<\/a> explore activement ces solutions. De nouveaux algorithmes de signature, comme ceux \u00e9tudi\u00e9s par le <strong>National Institute of Standards and Technology (NIST)<\/strong>, pourraient remplacer les syst\u00e8mes actuels d\u2019ici quelques ann\u00e9es.<\/p>\n<p>D\u2019autres initiatives, notamment au sein de Bitcoin, envisagent d\u00e9j\u00e0 une transition vers des sch\u00e9mas cryptographiques alternatifs. Mais cette adaptation demanderait une <strong>coordination mondiale<\/strong>, car elle impliquerait la mise \u00e0 jour de milliards de syst\u00e8mes et de services connect\u00e9s.<\/p>\n<h2><span id=\"une_menace_mesuree_mais_a_ne_pas_negliger\">Une menace mesur\u00e9e mais \u00e0 ne pas n\u00e9gliger<\/span><\/h2>\n<p>Pour l\u2019instant, la menace reste contenue. Les ordinateurs quantiques capables de casser RSA \u00e0 grande \u00e9chelle <strong>n\u2019existent pas encore<\/strong>. La technologie est prometteuse, mais les chercheurs doivent encore r\u00e9soudre des probl\u00e8mes majeurs li\u00e9s \u00e0 la stabilit\u00e9 des qubits et \u00e0 la correction d\u2019erreurs.<\/p>\n<p>Vitalik Buterin le reconna\u00eet lui-m\u00eame : <strong>il est peu probable que la catastrophe se produise demain<\/strong>. Mais il pr\u00e9f\u00e8re adopter une approche prudente. Selon lui, la communaut\u00e9 crypto doit se pr\u00e9parer d\u00e8s aujourd\u2019hui pour ne pas \u00eatre prise de court.<\/p>\n<p>En r\u00e9alit\u00e9, ce n\u2019est pas seulement l\u2019avenir de Bitcoin ou d\u2019Ethereum qui est en jeu, mais celui de <strong>toute la soci\u00e9t\u00e9 num\u00e9rique<\/strong>. Si un acteur hostile venait \u00e0 ma\u00eetriser l\u2019ordinateur quantique, il aurait entre les mains une arme num\u00e9rique capable de <strong>bouleverser l\u2019\u00e9quilibre mondial<\/strong>.<\/p>\n<p>Ainsi, m\u00eame si le risque reste limit\u00e9 \u00e0 court terme, les prochaines ann\u00e9es seront d\u00e9cisives. La course \u00e0 la cryptographie post-quantique est d\u00e9sormais lanc\u00e9e, et l\u2019histoire jugera si nous avons su anticiper ce d\u00e9fi technologique sans pr\u00e9c\u00e9dent.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>L\u2019inventeur d\u2019Ethereum, Vitalik Buterin, alerte sur une menace encore lointaine mais bien r\u00e9elle : l\u2019ordinateur quantique. Selon lui, il&#8230;<\/p>\n","protected":false},"author":245,"featured_media":7843,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[7],"tags":[],"class_list":["post-7840","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","entry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.8.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Vitalik Buterin : 20 % de risque que le quantique casse la crypto<\/title>\n<meta name=\"description\" content=\"Vitalik Buterin estime qu\u2019il y a 20 % de chances que les ordinateurs quantiques cassent la cryptographie d\u2019ici 2030.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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passionn\u00e9 par les crypto-actifs depuis 2020, avec un int\u00e9r\u00eat plus large pour la finance, les innovations technologiques et leur impact sur la soci\u00e9t\u00e9. Curieux et tourn\u00e9 vers l\u2019avenir, il suit de pr\u00e8s les r\u00e9volutions li\u00e9es \u00e0 l\u2019intelligence artificielle et au Web3. Voyageur dans l\u2019\u00e2me, il aime d\u00e9couvrir les cultures du monde et apprendre au contact des gens. Il partage ici une vision accessible et \u00e9clair\u00e9e de l\u2019\u00e9cosyst\u00e8me crypto.","url":"https:\/\/icobench.com\/fr\/author\/nicola\/"}]}},"featured_image_src":"https:\/\/icobench.com\/fr\/wp-content\/uploads\/sites\/5\/2025\/08\/Wallet-48-1-600x400.png","featured_image_src_square":"https:\/\/icobench.com\/fr\/wp-content\/uploads\/sites\/5\/2025\/08\/Wallet-48-1-600x600.png","author_info":{"display_name":"Jean Rammau","author_link":"https:\/\/icobench.com\/fr\/author\/nicola\/"},"_links":{"self":[{"href":"https:\/\/icobench.com\/fr\/wp-json\/wp\/v2\/posts\/7840","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/icobench.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/icobench.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/icobench.com\/fr\/wp-json\/wp\/v2\/users\/245"}],"replies":[{"embeddable":true,"href":"https:\/\/icobench.com\/fr\/wp-json\/wp\/v2\/comments?post=7840"}],"version-history":[{"count":1,"href":"https:\/\/icobench.com\/fr\/wp-json\/wp\/v2\/posts\/7840\/revisions"}],"predecessor-version":[{"id":7844,"href":"https:\/\/icobench.com\/fr\/wp-json\/wp\/v2\/posts\/7840\/revisions\/7844"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/icobench.com\/fr\/wp-json\/wp\/v2\/media\/7843"}],"wp:attachment":[{"href":"https:\/\/icobench.com\/fr\/wp-json\/wp\/v2\/media?parent=7840"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/icobench.com\/fr\/wp-json\/wp\/v2\/categories?post=7840"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/icobench.com\/fr\/wp-json\/wp\/v2\/tags?post=7840"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}