{"id":13748,"date":"2025-08-09T08:00:00","date_gmt":"2025-08-09T06:00:00","guid":{"rendered":"https:\/\/www.blog.bim.finance\/?p=13748"},"modified":"2025-08-09T18:48:02","modified_gmt":"2025-08-09T16:48:02","slug":"quantum-menace-bitcoin","status":"publish","type":"post","link":"https:\/\/www.blog.bim.finance\/en\/quantum-menace-bitcoin\/","title":{"rendered":"Quantum Computing : la menace qui plane sur Bitcoin"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"13748\" class=\"elementor elementor-13748\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-a8a9f0f elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"a8a9f0f\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-476eabc\" data-id=\"476eabc\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-4a4e936 elementor-widget elementor-widget-heading\" data-id=\"4a4e936\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Un saut technologique au c\u0153ur du probl\u00e8me<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-64ba1c4 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"64ba1c4\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-17b687a\" data-id=\"17b687a\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3412895 elementor-widget elementor-widget-text-editor\" data-id=\"3412895\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"p1\">Le Quantum Computing exploite les principes de la m\u00e9canique quantique pour traiter l\u2019information d\u2019une mani\u00e8re radicalement diff\u00e9rente des ordinateurs classiques. Au lieu de bits, elle utilise des qubits qui peuvent exister simultan\u00e9ment dans plusieurs \u00e9tats.<\/p><p class=\"p1\">Cette capacit\u00e9 offre, en th\u00e9orie, une puissance de calcul exponentielle pour certaines t\u00e2ches, notamment la factorisation de grands nombres et la r\u00e9solution d\u2019algorithmes cryptographiques, comme l\u2019algorithme de Shor d\u00e9velopp\u00e9 en 1994.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-a30604a elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"a30604a\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-1d49d58\" data-id=\"1d49d58\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-cd89756 elementor-widget elementor-widget-heading\" data-id=\"cd89756\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Les fondations de Bitcoin et leur vuln\u00e9rabilit\u00e9<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-be19d82 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"be19d82\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-7cfda21\" data-id=\"7cfda21\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-eee98c3 elementor-widget elementor-widget-image\" data-id=\"eee98c3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img data-recalc-dims=\"1\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/imageio.forbes.com\/specials-images\/imageserve\/675b55f62e8f078fc71b1fa0\/3D-illustration-of-a-working-quantum-computer--Bitcoin-security\/0x0.jpg?w=800&#038;ssl=1\" title=\"\" alt=\"Le Quantum Computing menace-t-il Bitcoin ?\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Le Quantum Computing menace-t-il Bitcoin ?<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-8e2958d elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"8e2958d\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-8f87b14\" data-id=\"8f87b14\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-71429b9 elementor-widget elementor-widget-text-editor\" data-id=\"71429b9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"p1\">Bitcoin utilise deux m\u00e9canismes cl\u00e9s : l\u2019algorithme SHA\u2011256 pour s\u00e9curiser sa <a href=\"https:\/\/www.blog.bim.finance\/en\/quest-ce-que-le-proof-of-work\/\">preuve de travail<\/a> (POW) et le sch\u00e9ma de signature elliptique ECDSA pour valider les transactions. Aujourd\u2019hui, casser ces syst\u00e8mes exigerait une force brute inatteignable pour un ordinateur classique. Toutefois, l\u2019algorithme de Shor permettrait \u00e0 un ordinateur quantique de d\u00e9river une cl\u00e9 priv\u00e9e \u00e0 partir d\u2019une cl\u00e9 publique, compromettant ainsi l\u2019authenticit\u00e9 des transactions et ouvrant la porte \u00e0 des vols massifs de bitcoins.<\/p><p class=\"p1\">Actuellement, les prototypes quantiques peinent \u00e0 stabiliser quelques centaines de qubits physiques, alors que des milliers de qubits logiques seraient n\u00e9cessaires pour menacer Bitcoin en un temps utile. Des estimations prudentes situent le seuil critique autour de 2029\u20132035, si les progr\u00e8s continuent au rythme actuel chez Google, IBM et autres acteurs du secteur.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-182f1e2 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"182f1e2\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-a3338df\" data-id=\"a3338df\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-b92cee8 elementor-widget elementor-widget-heading\" data-id=\"b92cee8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Strat\u00e9gies de d\u00e9fense : vers le post\u2011quantum<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-e4b5460 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"e4b5460\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-3cd476c\" data-id=\"3cd476c\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a212026 elementor-widget elementor-widget-text-editor\" data-id=\"a212026\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"p1\">Pour anticiper ce risque, la communaut\u00e9 blockchain \u00e9tudie des solutions de cryptographie post\u2011quantum. Algorand a d\u00e9j\u00e0 impl\u00e9ment\u00e9 des signatures bas\u00e9es sur Dilithium, un algorithme valid\u00e9 par le NIST en 2024, tandis que des projets comme QRL (Quantum Resistant Ledger) int\u00e8grent nativement une d\u00e9fense contre les attaques quantiques.<\/p><p class=\"p1\">Du c\u00f4t\u00e9 de Bitcoin, la mise en place d\u2019un hard fork pourrait permettre de migrer vers un sch\u00e9ma post\u2011quantum, \u00e0 condition de coordonner l\u2019ensemble du r\u00e9seau avant que la menace ne devienne critique.<\/p><p class=\"p1\">Le danger principal r\u00e9side dans la possibilit\u00e9 pour un acteur mal intentionn\u00e9 de collecter et stocker aujourd\u2019hui des transactions chiffr\u00e9es, pour ensuite les d\u00e9chiffrer lorsque l\u2019ordinateur quantique aura la puissance n\u00e9cessaire. Ce sc\u00e9nario, appel\u00e9 \u00ab\u00a0harvest now, decrypt later\u00a0\u00bb, souligne l\u2019urgence de migrer les adresses actives vers des mesures de protection post\u2011quantum avant que l\u2019informatique quantique ne franchisse le seuil critique.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-e7afe66 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"e7afe66\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-417a202\" data-id=\"417a202\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-2fa50bf elementor-widget elementor-widget-heading\" data-id=\"2fa50bf\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Pr\u00e9parer l\u2019avenir d\u00e8s aujourd\u2019hui<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-f070429 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"f070429\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-c322563\" data-id=\"c322563\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-fa122e5 elementor-widget elementor-widget-image\" data-id=\"fa122e5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img data-recalc-dims=\"1\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/media.cybernews.com\/images\/featured-big\/2023\/07\/google-sycamore-quantum-processor.png?w=800&#038;ssl=1\" title=\"\" alt=\"Illustration d&#039;un ordinateur quantique - Cybernews\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Illustration d'un ordinateur quantique - Cybernews<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-f4bd6c1 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"f4bd6c1\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-d32becb\" data-id=\"d32becb\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3201ae2 elementor-widget elementor-widget-text-editor\" data-id=\"3201ae2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"p1\">Le Quantum Computing constitue une double r\u00e9volution : prometteuse pour la recherche scientifique, mais potentiellement destructrice pour la cryptographie actuelle.<\/p><p class=\"p1\">Pour Bitcoin, le d\u00e9fi est clair : d\u00e9velopper et d\u00e9ployer des protocoles r\u00e9sistants \u00e0 la quantique avant 2035. Cette transition n\u00e9cessitera un consensus majeur au sein de la communaut\u00e9 et une coordination technique rigoureuse pour pr\u00e9server la confiance et la s\u00e9curit\u00e9 du r\u00e9seau.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-5ed0ece elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"5ed0ece\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-574e968\" data-id=\"574e968\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-767c18d elementor-widget elementor-widget-text-editor\" data-id=\"767c18d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Sources<\/strong> :<\/p><ul><li><a href=\"https:\/\/www.forbes.com\/councils\/forbesbusinessdevelopmentcouncil\/2025\/04\/04\/quantum-computing-a-new-threat-to-bitcoin-and-crypto-security\">Forbes<\/a><\/li><li><a href=\"https:\/\/blog.valr.com\/blog\/is-quantum-computing-a-threat-to-bitcoins-security\">Valr &#8211; Is Quantum Computing a Threat to Bitcoin&rsquo;s Security?<\/a><\/li><li><a href=\"https:\/\/arxiv.org\/abs\/2410.16965\">Cornell University -Downtime Required for Bitcoin Quantum-Safety<\/a><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>L\u2019av\u00e8nement du Quantum Computing menace-t-il l\u2019int\u00e9grit\u00e9 du r\u00e9seau Bitcoin ? D\u00e9taillons les d\u00e9fis s\u00e9curitaires, le calendrier estim\u00e9 de la menace et les pistes de protection post\u2011quantum.<\/p>","protected":false},"author":18,"featured_media":13891,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mo_disable_npp":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[38,37],"tags":[],"ppma_author":[145],"class_list":["post-13748","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bitcoin-hors-serie","category-hors-serie"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Quantum Computing : la menace qui plane sur Bitcoin - BIM Blog<\/title>\n<meta name=\"description\" content=\"Tandis que le Quantum Computing progresse, Bitcoin pourrait voir sa s\u00e9curit\u00e9 remise en cause. 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