{"id":16745,"date":"2022-08-05T17:28:52","date_gmt":"2022-08-05T15:28:52","guid":{"rendered":"https:\/\/www.m-q.ch\/?p=16745"},"modified":"2022-08-05T17:28:52","modified_gmt":"2022-08-05T15:28:52","slug":"quantum-cryptography-hacker-attack-pointless","status":"publish","type":"post","link":"https:\/\/www.m-q.ch\/en\/quantenkryptografie-hackerangriff-sinnlos\/","title":{"rendered":"Quantum cryptography: hacker attack pointless"},"content":{"rendered":"
\"\"
Different quantum states of atoms in the service of security: quantum cryptography makes hacker attacks impossible. (Image: Unsplash.com)<\/figcaption><\/figure>\n

The Internet is teeming with highly sensitive information. Sophisticated encryption techniques usually ensure that such content cannot be intercepted and read. But in the future, powerful quantum computers in particular could crack the keys, sometimes in a matter of seconds.<\/p>\n

Method from the 1990s<\/h3>\n

Quantum mechanical key exchange - known in technical jargon as \"quantum key distribution (QKD)\" - is tap-proof against attacks on the connection lines. QKD is thus immune even to quantum computers, but not to attacks or tampering with the devices themselves. The devices could issue a key that the manufacturer had already stored beforehand and possibly passed on to a hacker. The so-called \"Device independent QKD\", or DIQKD for short, now also checks the security of the devices. Theoretically, this method has been known since the 1990s, but now an international group of researchers led by LMU physicist Harald Weinfurter (https:\/\/xqp.physik.uni-muenchen.de\/people\/professor\/weinfurter\/index.html<\/a>) and Charles Lim from the National University of Singapore (NUS) was realized experimentally for the first time.<\/p>\n

Measuring quantum states of atoms<\/h3>\n

In the present experiment, the physicists used two entangled rubidium atoms located in two laboratories 400 meters apart on the LMU campus to exchange keys. The two sites are connected by a 700-meter fiber-optic cable that runs under the plaza in front of the university's main building. To exchange a key, the two parties measure the quantum states of their atoms. This is done randomly in two and four directions, respectively. If the directions match, the measurement results are identical due to entanglement and can be used to generate a secret key.<\/p>\n

Tap-proof connections thanks to quantum cryptography<\/h3>\n

With the other measurement results, a so-called Bell's inequality can be evaluated. John Bell developed this inequality to test whether nature can be described with hidden variables. In the DIQKD, this test is now used to ensure that \"there is no tampering with the instruments, i.e., hidden measurement results have not been stored in the instruments in advance,\" Weinfurter said. The NUS protocol now uses two measurement settings. \"This makes it much more difficult to eavesdrop on information. So more noise can be tolerated and secret keys can be generated even with higher noise,\" says Charles Lim.<\/p>\n

\"With our method, we can now securely generate secret keys even with uncharacterized and potentially untrusted devices,\" Weinfurter explains. \"Our work lays the foundation for future quantum networks in which absolutely secure communication is possible between distant locations,\" says Charles Lim.<\/p>","protected":false},"excerpt":{"rendered":"

Im Internet wimmelt es nur so von hochsensiblen Informationen. Ausgekl\u00fcgelte Verschl\u00fcsselungstechniken sorgen in der Regel daf\u00fcr, dass solche Inhalte nicht abgefangen und gelesen werden k\u00f6nnen. Doch vor allem leistungsstarke Quantencomputer k\u00f6nnten in Zukunft die Schl\u00fcssel teils in Sekundenschnelle knacken. Methode aus den 1990er-Jahren Der quantenmechanische Schl\u00fcsselaustausch – im Fachjargon „Quantum Key Distribution (QKD) genannt – […]<\/p>\n","protected":false},"author":10,"featured_media":16746,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[4],"tags":[3560,3743,5300],"class_list":["post-16745","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-risikomanagement","tag-cybersicherheit","tag-forschung","tag-quantenphysik"],"acf":[],"yoast_head":"\nQuantenkryptografie: Hackerangriff sinnlos - MQ Management und Qualit\u00e4t<\/title>\n<meta name=\"description\" content=\"Forscher der Universit\u00e4ten M\u00fcnchen und Singapur haben eine erweiterte Form der Quantenkryptografie zum ersten Mal experimentell realisiert.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.m-q.ch\/en\/quantum-cryptography-hacker-attack-pointless\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Quantenkryptografie: Hackerangriff sinnlos\" \/>\n<meta property=\"og:description\" content=\"Forscher der Universit\u00e4ten M\u00fcnchen und Singapur haben eine erweiterte Form der Quantenkryptografie zum ersten Mal experimentell realisiert.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.m-q.ch\/en\/quantum-cryptography-hacker-attack-pointless\/\" \/>\n<meta property=\"og:site_name\" content=\"MQ Management und Qualit\u00e4t\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/ManagementUndQualitaet\" \/>\n<meta property=\"article:published_time\" content=\"2022-08-05T15:28:52+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.m-q.ch\/wp-content\/uploads\/2022\/08\/Quantenkryptografie-Hackerangriff-sinnlos_MQ.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"680\" \/>\n\t<meta property=\"og:image:height\" content=\"474\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Thomas Berner\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"#Quantenkryptografie: #Hackerangriff sinnlos\" \/>\n<meta name=\"twitter:description\" content=\"Forscher der Universit\u00e4ten M\u00fcnchen und Singapur haben eine erweiterte Form der #Quantenkryptografie zum ersten Mal experimentell realisiert.\" \/>\n<meta name=\"twitter:image\" content=\"https:\/\/www.m-q.ch\/wp-content\/uploads\/2022\/08\/Quantenkryptografie-Hackerangriff-sinnlos_MQ.jpg\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Thomas Berner\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.m-q.ch\/quantenkryptografie-hackerangriff-sinnlos\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.m-q.ch\/quantenkryptografie-hackerangriff-sinnlos\/\"},\"author\":{\"name\":\"Thomas Berner\",\"@id\":\"https:\/\/www.m-q.ch\/fr\/#\/schema\/person\/a8711938b1cfb3f056dec70eaa0b42ab\"},\"headline\":\"Quantenkryptografie: Hackerangriff sinnlos\",\"datePublished\":\"2022-08-05T15:28:52+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.m-q.ch\/quantenkryptografie-hackerangriff-sinnlos\/\"},\"wordCount\":452,\"publisher\":{\"@id\":\"https:\/\/www.m-q.ch\/fr\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.m-q.ch\/quantenkryptografie-hackerangriff-sinnlos\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.m-q.ch\/wp-content\/uploads\/2022\/08\/Quantenkryptografie-Hackerangriff-sinnlos_MQ.jpg\",\"keywords\":[\"Cybersicherheit\",\"Forschung\",\"Quantenphysik\"],\"articleSection\":[\"Risikomanagement\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.m-q.ch\/quantenkryptografie-hackerangriff-sinnlos\/\",\"url\":\"https:\/\/www.m-q.ch\/quantenkryptografie-hackerangriff-sinnlos\/\",\"name\":\"Quantenkryptografie: Hackerangriff sinnlos - MQ Management und Qualit\u00e4t\",\"isPartOf\":{\"@id\":\"https:\/\/www.m-q.ch\/fr\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.m-q.ch\/quantenkryptografie-hackerangriff-sinnlos\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.m-q.ch\/quantenkryptografie-hackerangriff-sinnlos\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.m-q.ch\/wp-content\/uploads\/2022\/08\/Quantenkryptografie-Hackerangriff-sinnlos_MQ.jpg\",\"datePublished\":\"2022-08-05T15:28:52+00:00\",\"description\":\"Forscher der Universit\u00e4ten M\u00fcnchen und Singapur haben eine erweiterte Form der Quantenkryptografie zum ersten Mal experimentell realisiert.\",\"breadcrumb\":{\"@id\":\"https:\/\/www.m-q.ch\/quantenkryptografie-hackerangriff-sinnlos\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.m-q.ch\/quantenkryptografie-hackerangriff-sinnlos\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.m-q.ch\/quantenkryptografie-hackerangriff-sinnlos\/#primaryimage\",\"url\":\"https:\/\/www.m-q.ch\/wp-content\/uploads\/2022\/08\/Quantenkryptografie-Hackerangriff-sinnlos_MQ.jpg\",\"contentUrl\":\"https:\/\/www.m-q.ch\/wp-content\/uploads\/2022\/08\/Quantenkryptografie-Hackerangriff-sinnlos_MQ.jpg\",\"width\":680,\"height\":474,\"caption\":\"Unterschiedliche Quantenzust\u00e4nde von Atomen im Dienste der Sicherheit: Quantenkryptografie macht Hackerangriffe unm\u00f6glich. (Bild: Unsplash.com)\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.m-q.ch\/quantenkryptografie-hackerangriff-sinnlos\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Risikomanagement\",\"item\":\"https:\/\/www.m-q.ch\/kategorie\/risikomanagement\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Quantenkryptografie: Hackerangriff sinnlos\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.m-q.ch\/fr\/#website\",\"url\":\"https:\/\/www.m-q.ch\/fr\/\",\"name\":\"MQ Management und Qualit\u00e4t\",\"description\":\"Plattform f\u00fcr integrierte Managementsysteme.\",\"publisher\":{\"@id\":\"https:\/\/www.m-q.ch\/fr\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.m-q.ch\/fr\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/www.m-q.ch\/fr\/#organization\",\"name\":\"Galledia Fachmedien AG\",\"url\":\"https:\/\/www.m-q.ch\/fr\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.m-q.ch\/fr\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/www.m-q.ch\/wp-content\/uploads\/2020\/12\/cropped-logo_small.png\",\"contentUrl\":\"https:\/\/www.m-q.ch\/wp-content\/uploads\/2020\/12\/cropped-logo_small.png\",\"width\":512,\"height\":512,\"caption\":\"Galledia Fachmedien AG\"},\"image\":{\"@id\":\"https:\/\/www.m-q.ch\/fr\/#\/schema\/logo\/image\/\"},\"sameAs\":[\"https:\/\/www.facebook.com\/ManagementUndQualitaet\",\"https:\/\/www.linkedin.com\/showcase\/17982321\/admin\/\"]},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.m-q.ch\/fr\/#\/schema\/person\/a8711938b1cfb3f056dec70eaa0b42ab\",\"name\":\"Thomas Berner\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.m-q.ch\/fr\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/faea7857408f70478f976d576da10f96?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/faea7857408f70478f976d576da10f96?s=96&d=mm&r=g\",\"caption\":\"Thomas Berner\"},\"url\":\"https:\/\/www.m-q.ch\/en\/author\/thomas-berner\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Quantum cryptography: Hacker attack pointless - MQ Management und Qualit\u00e4t","description":"Researchers at the Universities of Munich and Singapore have experimentally realized an advanced form of quantum cryptography for the first time.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.m-q.ch\/en\/quantum-cryptography-hacker-attack-pointless\/","og_locale":"en_US","og_type":"article","og_title":"Quantenkryptografie: Hackerangriff sinnlos","og_description":"Forscher der Universit\u00e4ten M\u00fcnchen und Singapur haben eine erweiterte Form der Quantenkryptografie zum ersten Mal experimentell realisiert.","og_url":"https:\/\/www.m-q.ch\/en\/quantum-cryptography-hacker-attack-pointless\/","og_site_name":"MQ Management und Qualit\u00e4t","article_publisher":"https:\/\/www.facebook.com\/ManagementUndQualitaet","article_published_time":"2022-08-05T15:28:52+00:00","og_image":[{"width":680,"height":474,"url":"https:\/\/www.m-q.ch\/wp-content\/uploads\/2022\/08\/Quantenkryptografie-Hackerangriff-sinnlos_MQ.jpg","type":"image\/jpeg"}],"author":"Thomas Berner","twitter_card":"summary_large_image","twitter_title":"#Quantenkryptografie: #Hackerangriff sinnlos","twitter_description":"Forscher der Universit\u00e4ten M\u00fcnchen und Singapur haben eine erweiterte Form der #Quantenkryptografie zum ersten Mal experimentell realisiert.","twitter_image":"https:\/\/www.m-q.ch\/wp-content\/uploads\/2022\/08\/Quantenkryptografie-Hackerangriff-sinnlos_MQ.jpg","twitter_misc":{"Written by":"Thomas Berner","Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.m-q.ch\/quantenkryptografie-hackerangriff-sinnlos\/#article","isPartOf":{"@id":"https:\/\/www.m-q.ch\/quantenkryptografie-hackerangriff-sinnlos\/"},"author":{"name":"Thomas Berner","@id":"https:\/\/www.m-q.ch\/fr\/#\/schema\/person\/a8711938b1cfb3f056dec70eaa0b42ab"},"headline":"Quantenkryptografie: Hackerangriff sinnlos","datePublished":"2022-08-05T15:28:52+00:00","mainEntityOfPage":{"@id":"https:\/\/www.m-q.ch\/quantenkryptografie-hackerangriff-sinnlos\/"},"wordCount":452,"publisher":{"@id":"https:\/\/www.m-q.ch\/fr\/#organization"},"image":{"@id":"https:\/\/www.m-q.ch\/quantenkryptografie-hackerangriff-sinnlos\/#primaryimage"},"thumbnailUrl":"https:\/\/www.m-q.ch\/wp-content\/uploads\/2022\/08\/Quantenkryptografie-Hackerangriff-sinnlos_MQ.jpg","keywords":["Cybersicherheit","Forschung","Quantenphysik"],"articleSection":["Risikomanagement"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/www.m-q.ch\/quantenkryptografie-hackerangriff-sinnlos\/","url":"https:\/\/www.m-q.ch\/quantenkryptografie-hackerangriff-sinnlos\/","name":"Quantum cryptography: Hacker attack pointless - MQ Management und Qualit\u00e4t","isPartOf":{"@id":"https:\/\/www.m-q.ch\/fr\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.m-q.ch\/quantenkryptografie-hackerangriff-sinnlos\/#primaryimage"},"image":{"@id":"https:\/\/www.m-q.ch\/quantenkryptografie-hackerangriff-sinnlos\/#primaryimage"},"thumbnailUrl":"https:\/\/www.m-q.ch\/wp-content\/uploads\/2022\/08\/Quantenkryptografie-Hackerangriff-sinnlos_MQ.jpg","datePublished":"2022-08-05T15:28:52+00:00","description":"Researchers at the Universities of Munich and Singapore have experimentally realized an advanced form of quantum cryptography for the first time.","breadcrumb":{"@id":"https:\/\/www.m-q.ch\/quantenkryptografie-hackerangriff-sinnlos\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.m-q.ch\/quantenkryptografie-hackerangriff-sinnlos\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.m-q.ch\/quantenkryptografie-hackerangriff-sinnlos\/#primaryimage","url":"https:\/\/www.m-q.ch\/wp-content\/uploads\/2022\/08\/Quantenkryptografie-Hackerangriff-sinnlos_MQ.jpg","contentUrl":"https:\/\/www.m-q.ch\/wp-content\/uploads\/2022\/08\/Quantenkryptografie-Hackerangriff-sinnlos_MQ.jpg","width":680,"height":474,"caption":"Unterschiedliche Quantenzust\u00e4nde von Atomen im Dienste der Sicherheit: Quantenkryptografie macht Hackerangriffe unm\u00f6glich. (Bild: Unsplash.com)"},{"@type":"BreadcrumbList","@id":"https:\/\/www.m-q.ch\/quantenkryptografie-hackerangriff-sinnlos\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Risikomanagement","item":"https:\/\/www.m-q.ch\/kategorie\/risikomanagement\/"},{"@type":"ListItem","position":2,"name":"Quantenkryptografie: Hackerangriff sinnlos"}]},{"@type":"WebSite","@id":"https:\/\/www.m-q.ch\/fr\/#website","url":"https:\/\/www.m-q.ch\/fr\/","name":"MQ Management and Quality","description":"Platform for integrated management systems.","publisher":{"@id":"https:\/\/www.m-q.ch\/fr\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.m-q.ch\/fr\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/www.m-q.ch\/fr\/#organization","name":"Galledia Trade Media AG","url":"https:\/\/www.m-q.ch\/fr\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.m-q.ch\/fr\/#\/schema\/logo\/image\/","url":"https:\/\/www.m-q.ch\/wp-content\/uploads\/2020\/12\/cropped-logo_small.png","contentUrl":"https:\/\/www.m-q.ch\/wp-content\/uploads\/2020\/12\/cropped-logo_small.png","width":512,"height":512,"caption":"Galledia Fachmedien AG"},"image":{"@id":"https:\/\/www.m-q.ch\/fr\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/ManagementUndQualitaet","https:\/\/www.linkedin.com\/showcase\/17982321\/admin\/"]},{"@type":"Person","@id":"https:\/\/www.m-q.ch\/fr\/#\/schema\/person\/a8711938b1cfb3f056dec70eaa0b42ab","name":"Thomas Bernard","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.m-q.ch\/fr\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/faea7857408f70478f976d576da10f96?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/faea7857408f70478f976d576da10f96?s=96&d=mm&r=g","caption":"Thomas Berner"},"url":"https:\/\/www.m-q.ch\/en\/author\/thomas-berner\/"}]}},"_links":{"self":[{"href":"https:\/\/www.m-q.ch\/en\/wp-json\/wp\/v2\/posts\/16745","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.m-q.ch\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.m-q.ch\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.m-q.ch\/en\/wp-json\/wp\/v2\/users\/10"}],"replies":[{"embeddable":true,"href":"https:\/\/www.m-q.ch\/en\/wp-json\/wp\/v2\/comments?post=16745"}],"version-history":[{"count":1,"href":"https:\/\/www.m-q.ch\/en\/wp-json\/wp\/v2\/posts\/16745\/revisions"}],"predecessor-version":[{"id":16747,"href":"https:\/\/www.m-q.ch\/en\/wp-json\/wp\/v2\/posts\/16745\/revisions\/16747"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.m-q.ch\/en\/wp-json\/wp\/v2\/media\/16746"}],"wp:attachment":[{"href":"https:\/\/www.m-q.ch\/en\/wp-json\/wp\/v2\/media?parent=16745"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.m-q.ch\/en\/wp-json\/wp\/v2\/categories?post=16745"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.m-q.ch\/en\/wp-json\/wp\/v2\/tags?post=16745"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}