{"id":8317,"date":"2026-05-29T15:18:03","date_gmt":"2026-05-29T15:18:03","guid":{"rendered":"https:\/\/cybersecurityinfocus.com\/?p=8317"},"modified":"2026-05-29T15:18:03","modified_gmt":"2026-05-29T15:18:03","slug":"certifiably-random-swiss-researchers-claim-perfect-random-number-source","status":"publish","type":"post","link":"https:\/\/cybersecurityinfocus.com\/?p=8317","title":{"rendered":"Certifiably random: Swiss researchers claim perfect random number source"},"content":{"rendered":"<div>\n<div class=\"grid grid--cols-10@md grid--cols-8@lg article-column\">\n<div class=\"col-12 col-10@md col-6@lg col-start-3@lg\">\n<div class=\"article-column__content\">\n<div class=\"container\"><\/div>\n<p>Researchers in Switzerland claim to have built a perfect random number generator from two quantum superconducting chips, a 30-meter-long pipe, and some software. The resulting device could be used to generate cryptographic keys, or to offer a \u201cpublic randomness service\u201d for lotteries or blockchain applications, they say.<\/p>\n<p>They\u2019re not the <a href=\"https:\/\/www.csoonline.com\/article\/3855710\/researchers-claim-their-protocol-can-create-truly-random-numbers-on-a-current-quantum-computer.html\">first to make the claim<\/a>.<\/p>\n<p>Many sources of randomness are biased. For example, coins or dice tend to favor one side. \u201cEven modern random number generators, which are based on quantum mechanical effects like the reflection of photons from beam splitters, are not entirely immune to such a systematic error or \u2018bias\u2019,\u201d said Andreas Wallraff, one of the leaders of the research team at ETH Zurich.<\/p>\n<p>Similar biases can be found in purely software-based <a href=\"https:\/\/www.networkworld.com\/article\/963951\/unix-how-random-is-random.html\">pseudo-random number generators<\/a>. This has led to security problems in <a href=\"https:\/\/www.csoonline.com\/article\/571183\/iot-devices-have-serious-security-deficiencies-due-to-bad-random-number-generation.html\">IoT devices<\/a> and <a href=\"https:\/\/www.computerworld.com\/article\/1524242\/whatsapp-flaw-could-allow-attackers-to-decrypt-messages.html\">WhatsApp<\/a>, among other applications.<\/p>\n<p>To get around that, the researchers set up of two supercomputing chips, each representing one qubit, cooled to near absolute zero. The chips are connected by a 30-meter-long microwave guide, similarly cooled, and the microwave photons flying between them create a situation of quantum entanglement.<\/p>\n<p>The results produced by this process are then transformed via a special algorithm to generate perfect randomness. \u201cThe resulting sequence of zeros and ones is now really perfectly random, and we can even certify that,\u201d said Renato Renner, the other team leader. \u201cThe technical improvements allowed us to create random numbers that will remain perfectly random for all eternity.\u201d<\/p>\n<p>The team published their results this week in an article entitled <a href=\"https:\/\/www.nature.com\/articles\/s41586-026-10521-8\" target=\"_blank\" rel=\"noopener\">\u201cExperimental randomness amplification\u201d in Nature<\/a>.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Researchers in Switzerland claim to have built a perfect random number generator from two quantum superconducting chips, a 30-meter-long pipe, and some software. The resulting device could be used to generate cryptographic keys, or to offer a \u201cpublic randomness service\u201d for lotteries or blockchain applications, they say. They\u2019re not the first to make the claim. [&hellip;]<\/p>\n","protected":false},"author":0,"featured_media":8318,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-8317","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-education"],"_links":{"self":[{"href":"https:\/\/cybersecurityinfocus.com\/index.php?rest_route=\/wp\/v2\/posts\/8317"}],"collection":[{"href":"https:\/\/cybersecurityinfocus.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cybersecurityinfocus.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/cybersecurityinfocus.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=8317"}],"version-history":[{"count":0,"href":"https:\/\/cybersecurityinfocus.com\/index.php?rest_route=\/wp\/v2\/posts\/8317\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cybersecurityinfocus.com\/index.php?rest_route=\/wp\/v2\/media\/8318"}],"wp:attachment":[{"href":"https:\/\/cybersecurityinfocus.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=8317"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cybersecurityinfocus.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=8317"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cybersecurityinfocus.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=8317"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}