{"id":635,"date":"2026-04-10T11:07:15","date_gmt":"2026-04-10T11:07:15","guid":{"rendered":"https:\/\/global.livebitcoinnews.com\/fr\/2026\/04\/10\/proposition-de-bitcoin-resistant-aux-ordinateurs-quantiques-offre-une-protection-durgence-sans-mise-a-niveau-du-reseau\/"},"modified":"2026-04-10T11:07:15","modified_gmt":"2026-04-10T11:07:15","slug":"proposition-de-bitcoin-resistant-aux-ordinateurs-quantiques-offre-une-protection-durgence-sans-mise-a-niveau-du-reseau","status":"publish","type":"post","link":"https:\/\/global.livebitcoinnews.com\/fr\/2026\/04\/10\/proposition-de-bitcoin-resistant-aux-ordinateurs-quantiques-offre-une-protection-durgence-sans-mise-a-niveau-du-reseau\/","title":{"rendered":"Proposition de Bitcoin R\u00e9sistant aux Ordinateurs Quantiques Offre une Protection d&rsquo;Urgence Sans Mise \u00e0 Niveau du R\u00e9seau"},"content":{"rendered":"<p><b><i>Une proposition de Bitcoin r\u00e9sistant aux ordinateurs quantiques pr\u00e9tend prot\u00e9ger le BTC sans mise \u00e0 niveau, mais les co\u00fbts \u00e9lev\u00e9s et les limites soul\u00e8vent des inqui\u00e9tudes.<\/i><\/b><\/p>\n<p><span style=\"font-weight: 400\">Une nouvelle proposition attire l&rsquo;attention dans la communaut\u00e9 Bitcoin concernant les futurs risques de s\u00e9curit\u00e9. L&rsquo;un des chercheurs a propos\u00e9 un moyen de s\u00e9curiser les transactions contre les attaques quantiques. Cette m\u00e9thode fonctionne sans modifier les r\u00e8gles du r\u00e9seau Bitcoin. Cependant, les experts estiment qu&rsquo;elle est co\u00fbteuse et adapt\u00e9e uniquement aux situations d&rsquo;urgence.<\/span><\/p>\n<h2><b>Une nouvelle recherche pr\u00e9sente un Bitcoin r\u00e9sistant aux ordinateurs quantiques sans modification du protocole<\/b><\/h2>\n<p><span style=\"font-weight: 400\">C&rsquo;est une suggestion du chercheur de StarkWare, Avihu Levy. Dans un <\/span><a href=\"https:\/\/github.com\/avihu28\/Quantum-Safe-Bitcoin-Transactions\/\"><span style=\"font-weight: 400\">document de recherche<\/span><\/a><span style=\"font-weight: 400\">, il a propos\u00e9 le Bitcoin R\u00e9sistant aux Ordinateurs Quantiques (QSB). L&rsquo;approche vise \u00e0 s\u00e9curiser Bitcoin contre les puissants ordinateurs quantiques. Fait important, cela fonctionne sur le r\u00e9seau en direct sans aucune mise \u00e0 niveau.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Bitcoin repose actuellement sur l&rsquo;Algorithme de Signature Num\u00e9rique \u00e0 Courbe Elliptique pour s\u00e9curiser les transactions. Ces signatures num\u00e9riques sont robustes aujourd&rsquo;hui mais pourraient ne plus l&rsquo;\u00eatre \u00e0 l&rsquo;avenir. Un ordinateur quantique puissant pourrait les casser \u00e0 l&rsquo;aide de l&rsquo;Algorithme de Shor. Ainsi, de nouvelles techniques de protection sont \u00e0 l&rsquo;\u00e9tude.<\/span><\/p>\n<p><b><i>Lecture connexe : <\/i><\/b><a href=\"https:\/\/www.livebitcoinnews.com\/new-google-research-shrinks-bitcoin-quantum-hack-timeline\/\"><b><i>Google affirme que les ordinateurs quantiques pourraient craquer Bitcoin en 9 minutes<\/i><\/b><\/a><\/p>\n<p><span style=\"font-weight: 400\">Le QSB remplace la s\u00e9curit\u00e9 bas\u00e9e sur la signature par une cryptographie bas\u00e9e sur le hachage. Dans ce syst\u00e8me, les utilisateurs doivent r\u00e9soudre un puzzle compliqu\u00e9 avant de pouvoir d\u00e9penser leur argent. Le puzzle implique de rechercher une entr\u00e9e valide qui a une sortie de hachage correcte. La v\u00e9rification dans ce processus est effectu\u00e9e avec RIPEMD-160.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Les probl\u00e8mes de hachage sont difficiles \u00e0 inverser, et donc r\u00e9sistants aux attaques quantiques connues. Par cons\u00e9quent, l&rsquo;approche transforme la s\u00e9curit\u00e9 en un probl\u00e8me de calcul plut\u00f4t qu&rsquo;en signatures. De plus, le QSB s&rsquo;appuie sur les scripts Bitcoin existants et ne n\u00e9cessite donc pas de modification du protocole. Cela en fait un choix instantan\u00e9 pour les utilisateurs souhaitant une s\u00e9curit\u00e9 suppl\u00e9mentaire.<\/span><\/p>\n<h2><b>Des co\u00fbts \u00e9lev\u00e9s et des limites pratiques restreignent l&rsquo;usage quotidien<\/b><\/h2>\n<p><span style=\"font-weight: 400\">Le QSB pr\u00e9sente de graves inconv\u00e9nients malgr\u00e9 ses avantages. Pour commencer, le prix de chaque transaction est extr\u00eamement \u00e9lev\u00e9. Les estimations montrent des co\u00fbts compris entre 75 et 200 $ par transaction. Cette d\u00e9pense est due \u00e0 l&rsquo;utilisation intensive de GPU ou de cloud computing.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Deuxi\u00e8mement, c&rsquo;est un processus long. Il peut n\u00e9cessiter plusieurs heures pour r\u00e9soudre le puzzle n\u00e9cessaire. M\u00eame de puissants syst\u00e8mes multi-GPU demandent du temps pour trouver la bonne r\u00e9ponse. Le QSB n&rsquo;est donc pas applicable aux paiements quotidiens.<\/span><\/p>\n<p><span style=\"font-weight: 400\">L&rsquo;autre d\u00e9fi est li\u00e9 \u00e0 l&rsquo;acceptation par le r\u00e9seau. De nombreux n\u0153uds consid\u00e8rent actuellement les transactions QSB comme non standard. Cela implique qu&rsquo;elles pourraient ne pas entrer dans le pool de transactions r\u00e9gulier. Les utilisateurs pourraient plut\u00f4t \u00eatre oblig\u00e9s de les transmettre directement aux mineurs pour approbation.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Actuellement, le QSB n&rsquo;est encore qu&rsquo;\u00e0 l&rsquo;\u00e9tat de prototype. Le code et la recherche sont accessibles publiquement, mais des tests complets en conditions r\u00e9elles sont limit\u00e9s. D&rsquo;autres solutions comme BIP-360 sont en cours de d\u00e9veloppement. Ces solutions \u00e0 long terme impliquent des mises \u00e0 niveau du r\u00e9seau et peuvent prendre des ann\u00e9es \u00e0 mettre en \u0153uvre.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Michael Saylor, quant \u00e0 lui, a exprim\u00e9 un avis diff\u00e9rent sur les <\/span><a href=\"https:\/\/www.livebitcoinnews.com\/solana-tests-quantum-resistant-security-but-network-speed-drops-90\/\"><span style=\"font-weight: 400\">risques quantiques<\/span><\/a><span style=\"font-weight: 400\">. Il a d\u00e9clar\u00e9 que la menace est encore largement hypoth\u00e9tique pour le moment. Il a ajout\u00e9 que Bitcoin pourrait avoir atteint un prix plancher d&rsquo;environ 60 000 $ lorsque la pression du march\u00e9 s&rsquo;est apais\u00e9e.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Enfin, le QSB offre une solution rapide mais co\u00fbteuse pour la s\u00e9curit\u00e9 quantique. Il fonctionne sans alt\u00e9rer les r\u00e8glements de Bitcoin, ce qui est unique. Son co\u00fbt \u00e9lev\u00e9 et son processus lent restreignent cependant son utilisation. N\u00e9anmoins, il d\u00e9montre la mani\u00e8re dont les d\u00e9veloppeurs se pr\u00e9parent \u00e0 affronter les futurs risques en mati\u00e8re de s\u00e9curit\u00e9 cryptographique.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Une proposition de Bitcoin r\u00e9sistant aux ordinateurs quantiques pr\u00e9tend prot\u00e9ger le BTC sans mise \u00e0 niveau, mais les co\u00fbts \u00e9lev\u00e9s et les limites soul\u00e8vent des inqui\u00e9tudes. Une nouvelle proposition attire l&rsquo;attention dans la communaut\u00e9 Bitcoin concernant les futurs risques de s\u00e9curit\u00e9. L&rsquo;un des chercheurs a propos\u00e9 un moyen de s\u00e9curiser les transactions contre les attaques [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":634,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[285,7],"tags":[],"class_list":["post-635","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bitcoin-infrastructure","category-bitcoin-news"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Proposition de Bitcoin R\u00e9sistant aux Ordinateurs Quantiques Offre une Protection d&#039;Urgence Sans Mise \u00e0 Niveau du R\u00e9seau - France Live Bitcoin News<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/global.livebitcoinnews.com\/fr\/2026\/04\/10\/proposition-de-bitcoin-resistant-aux-ordinateurs-quantiques-offre-une-protection-durgence-sans-mise-a-niveau-du-reseau\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Proposition de Bitcoin R\u00e9sistant aux Ordinateurs Quantiques Offre une Protection d&#039;Urgence Sans Mise \u00e0 Niveau du R\u00e9seau - France Live Bitcoin News\" \/>\n<meta property=\"og:description\" content=\"Une proposition de Bitcoin r\u00e9sistant aux ordinateurs quantiques pr\u00e9tend prot\u00e9ger le BTC sans mise \u00e0 niveau, mais les co\u00fbts \u00e9lev\u00e9s et les limites soul\u00e8vent des inqui\u00e9tudes. 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