{"id":4140,"date":"2026-04-24T08:00:00","date_gmt":"2026-04-24T08:00:00","guid":{"rendered":"http:\/\/yourfinanceinfo.com\/2026\/04\/24\/quantum-computer-cracks-15-bit-ecdsa-key-used-in-bitcoin-cryptography\/"},"modified":"2026-06-01T16:00:31","modified_gmt":"2026-06-01T16:00:31","slug":"quantum-computer-cracks-15-bit-ecdsa-key-used-in-bitcoin-cryptography","status":"publish","type":"post","link":"https:\/\/yourfinanceinfo.com\/da\/quantum-computer-cracks-15-bit-ecdsa-key-used-in-bitcoin-cryptography\/","title":{"rendered":"Kvantecomputer kn\u00e6kker 15-bit ECDSA-n\u00f8gle brugt i Bitcoin-kryptografi"},"content":{"rendered":"<p>Forskere har offentliggjort et studie, der dokumenterer en vellykket faktorisering af en 15-bit ECDSA-n\u00f8gle (elliptic curve digital signature algorithm) ved hj\u00e6lp af en kvantecomputer \u2014 den samme algoritme, der ligger til grund for Bitcoin&#8217;s transaktionssignering \u2014 og som genopt\u00e6nder debatten om, hvor hurtigt netv\u00e6rkets sikkerhed kan blive udfordret af kvantehardware.<\/p><p>Bedriften, om end beskeden efter klassiske standarder, udg\u00f8r et meningsfuldt proof-of-concept for kvantenativ kn\u00e6kning af ECDSA. Forskerne brugte en 127-qubit-processor til at fuldf\u00f8re opgaven p\u00e5 under seks timer.<\/p><p>&#8220;Dette er ikke en eksistentiel trussel mod Bitcoin i dag,&#8221; sagde dr. Elena Kowalski, en af artiklens forfattere. &#8220;Bitcoin bruger 256-bit-n\u00f8gler. Det, vi demonstrerede, kr\u00e6ver ekstrapolering med omtrent 17 st\u00f8rrelsesordener.&#8221;<\/p><p>Bitcoins udvikler-mailingliste har set fornyet debat om BIP-360, et forslag til kvantebestandige signaturordninger. Ethereums k\u00f8replan inkluderer allerede post-kvantekryptografi som en del af &#8220;Purge&#8221;-fasen.<\/p>\n\n\n<h2 class=\"wp-block-heading\">Relaterede artikler<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/yourfinanceinfo.com\/da\/bitcoin-mining-difficulty-rises-3-2-as-global-hash-rate-climbs-to-new-high\/\">Bitcoin-mining-sv\u00e6rhedsgrad stiger 3,2 % i takt med at den globale hashrate n\u00e5r nyt h\u00f8jdepunkt<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/yourfinanceinfo.com\/da\/sui-based-defi-protocol-volo-loses-3-5-million-in-vault-exploit\/\">Sui-baseret DeFi-protokol Volo mister $3,5 millioner i Vault Exploit<\/a><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Forskere har offentliggjort et studie, der dokumenterer en vellykket faktorisering af en 15-bit ECDSA-n\u00f8gle (elliptic curve digital signature algorithm) ved hj\u00e6lp af en kvantecomputer \u2014 den samme algoritme, der ligger til grund for Bitcoin&#8217;s transaktionssignering \u2014 og som genopt\u00e6nder debatten om, hvor hurtigt netv\u00e6rkets sikkerhed kan blive udfordret af kvantehardware. Bedriften repr\u00e6senterer, selvom den er beskeden efter klassiske standarder, et<\/p>","protected":false},"author":10,"featured_media":4139,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26,35],"tags":[136,147,155,154],"class_list":["post-4140","post","type-post","status-publish","format-standard","has-post-thumbnail","category-bitcoin","category-technology","tag-bitcoin","tag-crypto-security","tag-cryptography","tag-quantum-computing"],"_links":{"self":[{"href":"https:\/\/yourfinanceinfo.com\/da\/wp-json\/wp\/v2\/posts\/4140","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/yourfinanceinfo.com\/da\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yourfinanceinfo.com\/da\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yourfinanceinfo.com\/da\/wp-json\/wp\/v2\/users\/10"}],"replies":[{"embeddable":true,"href":"https:\/\/yourfinanceinfo.com\/da\/wp-json\/wp\/v2\/comments?post=4140"}],"version-history":[{"count":1,"href":"https:\/\/yourfinanceinfo.com\/da\/wp-json\/wp\/v2\/posts\/4140\/revisions"}],"predecessor-version":[{"id":4430,"href":"https:\/\/yourfinanceinfo.com\/da\/wp-json\/wp\/v2\/posts\/4140\/revisions\/4430"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/yourfinanceinfo.com\/da\/wp-json\/wp\/v2\/media\/4139"}],"wp:attachment":[{"href":"https:\/\/yourfinanceinfo.com\/da\/wp-json\/wp\/v2\/media?parent=4140"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yourfinanceinfo.com\/da\/wp-json\/wp\/v2\/categories?post=4140"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yourfinanceinfo.com\/da\/wp-json\/wp\/v2\/tags?post=4140"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}