{"id":28420,"date":"2023-01-07T13:12:20","date_gmt":"2023-01-07T13:12:20","guid":{"rendered":"https:\/\/mailinvest.blog\/index.php\/2023\/01\/07\/chinese-researchers-claimed-quantum-encryption-crack-looks-unlikely-the-register\/"},"modified":"2023-01-07T13:12:20","modified_gmt":"2023-01-07T13:12:20","slug":"chinese-researchers-claimed-quantum-encryption-crack-looks-unlikely-the-register","status":"publish","type":"post","link":"https:\/\/mailinvest.blog\/index.php\/2023\/01\/07\/chinese-researchers-claimed-quantum-encryption-crack-looks-unlikely-the-register\/","title":{"rendered":"Chinese researchers&#8217; claimed quantum encryption crack looks unlikely \u2022 The Register"},"content":{"rendered":"<p> <a href=\"https:\/\/go.fiverr.com\/visit\/?bta=1052423&nci=17043\" Target=\"_Top\"><img loading=\"lazy\" decoding=\"async\" border=\"0\" src=\"https:\/\/fiverr.ck-cdn.com\/tn\/serve\/?cid=40081059\" loading=\"lazy\"  width=\"601\" height=\"201\"><\/a>\n<\/p>\n<div id=\"body\">\n<p>Briefly this week, it appeared that quantum computers might finally be ready to break 2048-bit RSA encryption, but that moment has passed.<\/p>\n<p>The occasion was the publication of an academic paper by no less than two dozen authors affiliated with seven different research institutions in China.<\/p>\n<p><a target=\"_blank\" rel=\"nofollow noopener\" href=\"https:\/\/arxiv.org\/abs\/2212.12372\">The paper<\/a>, titled &#8220;Factoring integers with sublinear resources on a superconducting quantum processor,&#8221; suggests that the application of Claus Peter Schnorr&#8217;s <a target=\"_blank\" rel=\"nofollow noopener\" href=\"https:\/\/eprint.iacr.org\/2021\/933\">recent factoring algorithm<\/a>, in conjunction with a quantum approximate optimization algorithm (<a target=\"_blank\" rel=\"nofollow noopener\" href=\"https:\/\/arxiv.org\/abs\/1411.4028\">QAOA<\/a>), can break asymmetric RSA-2048 encryption using a non-fault tolerant (<a target=\"_blank\" rel=\"nofollow noopener\" href=\"https:\/\/en.wikipedia.org\/wiki\/Noisy_intermediate-scale_quantum_era\">NISQ<\/a>, or noisy intermediate scale quantum) quantum computer with only 372 physical quantum bits or qubits.<\/p>\n<div aria-hidden=\"true\" class=\"adun\" data-pos=\"top\" data-raptor=\"condor\" data-xsm=\",fluid,mpu,\" data-sm=\",fluid,mpu,\" data-md=\",fluid,mpu,\">\n        <noscript><br \/>\n            <a href=\"https:\/\/pubads.g.doubleclick.net\/gampad\/jump?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=2&amp;c=2Y7lvtOZp0DIfHGWv69AGzQAAABc&amp;t=ct%3Dns%26unitnum%3D2%26raptor%3Dcondor%26pos%3Dtop%26test%3D0\" target=\"_blank\" rel=\"noopener\"><br \/>\n                <img decoding=\"async\" src=\"https:\/\/pubads.g.doubleclick.net\/gampad\/ad?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=2&amp;c=2Y7lvtOZp0DIfHGWv69AGzQAAABc&amp;t=ct%3Dns%26unitnum%3D2%26raptor%3Dcondor%26pos%3Dtop%26test%3D0\" loading=\"lazy\" alt=\"\"\/><br \/>\n            <\/a><br \/>\n        <\/noscript>\n    <\/div>\n<p>If true, this would be a significant development because there are already quantum computers that exceed that specification, like IBM&#8217;s <a target=\"_blank\" rel=\"nofollow noopener\" href=\"https:\/\/newsroom.ibm.com\/2022-11-09-IBM-Unveils-400-Qubit-Plus-Quantum-Processor-and-Next-Generation-IBM-Quantum-System-Two\">433-qubit Osprey<\/a>.<\/p>\n<div aria-hidden=\"true\" class=\"adun\" data-pos=\"top\" data-raptor=\"falcon\" data-xmd=\",fluid,mpu,leaderboard,\" data-lg=\",fluid,mpu,leaderboard,\" data-xlg=\",fluid,billboard,superleaderboard,mpu,leaderboard,\" data-xxlg=\",fluid,billboard,superleaderboard,brandwidth,brandimpact,leaderboard,mpu,\">\n            <noscript><br \/>\n                <a href=\"https:\/\/pubads.g.doubleclick.net\/gampad\/jump?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=4&amp;c=44Y7lvtOZp0DIfHGWv69AGzQAAABc&amp;t=ct%3Dns%26unitnum%3D4%26raptor%3Dfalcon%26pos%3Dmid%26test%3D0\" target=\"_blank\" rel=\"noopener\"><br \/>\n                    <img decoding=\"async\" src=\"https:\/\/pubads.g.doubleclick.net\/gampad\/ad?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=4&amp;c=44Y7lvtOZp0DIfHGWv69AGzQAAABc&amp;t=ct%3Dns%26unitnum%3D426raptor%3Dfalcon%26pos%3Dmid%26test%3D0\" loading=\"lazy\" alt=\"\"\/><br \/>\n                <\/a><br \/>\n            <\/noscript>\n        <\/div>\n<div class=\"adun_eagle_desktop_story_wrapper\">\n<div aria-hidden=\"true\" class=\"adun\" data-pos=\"mid\" data-raptor=\"eagle\" data-xxlg=\",mpu,dmpu,\">\n                <noscript><br \/>\n                    <a href=\"https:\/\/pubads.g.doubleclick.net\/gampad\/jump?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=3&amp;c=33Y7lvtOZp0DIfHGWv69AGzQAAABc&amp;t=ct%3Dns%26unitnum%3D3%26raptor%3Deagle%26pos%3Dmid%26test%3D0\" target=\"_blank\" rel=\"noopener\"><br \/>\n                        <img decoding=\"async\" src=\"https:\/\/pubads.g.doubleclick.net\/gampad\/ad?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=3&amp;c=33Y7lvtOZp0DIfHGWv69AGzQAAABc&amp;t=ct%3Dns%26unitnum%3D3%26raptor%3Deagle%26pos%3Dmid%26test%3D0\" loading=\"lazy\" alt=\"\"\/><br \/>\n                    <\/a><br \/>\n                <\/noscript>\n            <\/div>\n<\/p><\/div>\n<p>The speculation has been that <a target=\"_blank\" href=\"https:\/\/www.theregister.com\/2022\/07\/05\/nist_quantum_resistant_algorithms\/\" rel=\"noopener\">orders of magnitude more qubits<\/a>, in conjunction with robust error correction at scale, may allow future quantum computers to run <a target=\"_blank\" rel=\"nofollow noopener\" href=\"https:\/\/quantum-computing.ibm.com\/composer\/docs\/iqx\/guide\/shors-algorithm\">Peter Schor&#8217;s algorithm<\/a> \u2013 not to be confused with the similarly named Schnorr \u2013 quickly, on very large numbers, thereby breaking RSA encryption.<\/p>\n<p>In 2019, researchers published <a target=\"_blank\" rel=\"nofollow noopener\" href=\"https:\/\/arxiv.org\/pdf\/1905.09749.pdf\">a paper<\/a> [PDF] claiming that 2048-bit RSA integers could be factored in about eight hours \u2026 given a quantum computer with 20 million noisy qubits (meaning without the overhead of error correction and the like).<\/p>\n<div aria-hidden=\"true\" class=\"adun\" data-pos=\"top\" data-raptor=\"falcon\" data-xsm=\",fluid,mpu,\" data-sm=\",fluid,mpu,\" data-md=\",fluid,mpu,\">\n            <noscript><br \/>\n                <a href=\"https:\/\/pubads.g.doubleclick.net\/gampad\/jump?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=4&amp;c=44Y7lvtOZp0DIfHGWv69AGzQAAABc&amp;t=ct%3Dns%26unitnum%3D4%26raptor%3Dfalcon%26pos%3Dmid%26test%3D0\" target=\"_blank\" rel=\"noopener\"><br \/>\n                    <img decoding=\"async\" src=\"https:\/\/pubads.g.doubleclick.net\/gampad\/ad?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=4&amp;c=44Y7lvtOZp0DIfHGWv69AGzQAAABc&amp;t=ct%3Dns%26unitnum%3D426raptor%3Dfalcon%26pos%3Dmid%26test%3D0\" loading=\"lazy\" alt=\"\"\/><br \/>\n                <\/a><br \/>\n            <\/noscript>\n        <\/div>\n<p>That&#8217;s a future the National Security Agency has been planning for since 2015, when it started public work on developing <a target=\"_blank\" href=\"https:\/\/www.theregister.com\/2022\/07\/05\/nist_quantum_resistant_algorithms\/\" rel=\"noopener\">quantum-resistant encryption algorithms<\/a>.<\/p>\n<p>No one is quite sure when, <a target=\"_blank\" rel=\"nofollow noopener\" href=\"https:\/\/kryptera.ca\/paper\/2019-03\/\">or whether<\/a>, that day will arrive. When we considered quantum crypto-cracking in 2019, University of Chicago computer science professor Diana Franklin <a target=\"_blank\" href=\"https:\/\/www.theregister.com\/2019\/03\/14\/quantum_encryption_debunking\/?page=2\" rel=\"noopener\">suggested<\/a>, &#8220;It is possible that Shor&#8217;s algorithm could be implemented in the next 15 years,&#8221; while allowing predictions of this sort are notoriously difficult to get right.<\/p>\n<p>Nonetheless, <a target=\"_blank\" rel=\"nofollow noopener\" href=\"https:\/\/www.nature.com\/articles\/d41586-019-02935-4\">the quantum gold rush is on<\/a>. The US and China, along with Europe, the UK, and other countries in Asia are all working to lead the nascent quantum computing industry and to avoid being caught flat-footed if a breakthrough occurs.<\/p>\n<h3 class=\"crosshead\">Let&#8217;s look at the facts<\/h3>\n<p>Public (asymmetric) key cryptography secures the financial system via digital signatures and certificates. Being able to forge those with a sufficiently capable quantum system would be problematic to say the least. Symmetric cryptographic algorithms, like AES-256, are considered to be more resistant to quantum computers, so the application of <a target=\"_blank\" rel=\"nofollow noopener\" href=\"https:\/\/arxiv.org\/pdf\/1512.04965.pdf\">Grover&#8217;s algorithm<\/a> [PDF] in a quantum system isn&#8217;t expected to alter the cryptographic landscape.<\/p>\n<p>The paper from 24 researchers in China might have remained a matter for those well-versed in advanced mathematics, cryptography, and quantum computing \u2013 a fairly small set of people \u2013 but for the fact that it got <a target=\"_blank\" rel=\"nofollow noopener\" href=\"https:\/\/www.schneier.com\/blog\/archives\/2023\/01\/breaking-rsa-with-a-quantum-computer.html\">noticed by cryptographer Bruce Schneier<\/a>.<\/p>\n<div aria-hidden=\"true\" class=\"adun\" id=\"story_eagle_xsm_sm_md_xmd_lg_xlg\" data-pos=\"mid\" data-raptor=\"eagle\" data-xsm=\",mpu,dmpu,\" data-sm=\",mpu,dmpu,\" data-md=\",mpu,dmpu,\" data-xmd=\",mpu,dmpu,\" data-lg=\",mpu,dmpu,\" data-xlg=\",mpu,dmpu,\">\n            <noscript><br \/>\n                <a href=\"https:\/\/pubads.g.doubleclick.net\/gampad\/jump?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=3&amp;c=33Y7lvtOZp0DIfHGWv69AGzQAAABc&amp;t=ct%3Dns%26unitnum%3D3%26raptor%3Deagle%26pos%3Dmid%26test%3D0\" target=\"_blank\" rel=\"noopener\"><br \/>\n                    <img decoding=\"async\" src=\"https:\/\/pubads.g.doubleclick.net\/gampad\/ad?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=3&amp;c=33Y7lvtOZp0DIfHGWv69AGzQAAABc&amp;t=ct%3Dns%26unitnum%3D3%26raptor%3Deagle%26pos%3Dmid%26test%3D0\" loading=\"lazy\" alt=\"\"\/><br \/>\n                <\/a><br \/>\n            <\/noscript>\n        <\/div>\n<p>&#8220;This is something to take seriously,&#8221; he wrote in his blog on January 3rd, 2023. &#8220;It might not be correct, but it\u2019s not obviously wrong.&#8221;<\/p>\n<p>Schneier did not take a position on the paper, but the following day The Financial Times took notice in <a target=\"_blank\" rel=\"nofollow noopener\" href=\"https:\/\/www.ft.com\/content\/b15680c0-cf31-448d-9eb6-b30426c29b8b\">an article<\/a> titled, &#8220;Chinese researchers claim to find way to break encryption using quantum computers.&#8221;<\/p>\n<p>Evidently they haven&#8217;t.<\/p>\n<p>Late that day, on January 4, Scott Aaronson, chair of computer science at The University of Texas at Austin, and director of its <a target=\"_blank\" rel=\"nofollow noopener\" href=\"https:\/\/www.cs.utexas.edu\/~qic\/\">Quantum Information Center<\/a>, offered a rebuttal with a succinct three word review of the paper: &#8220;<a target=\"_blank\" rel=\"nofollow noopener\" href=\"https:\/\/scottaaronson.blog\/?p=6957\">No. Just No.<\/a>&#8220;<\/p>\n<p>Aaronson, among the more credible voices on such matters, hangs the researchers with their own caveat: &#8220;It should be pointed out that the quantum speedup of the algorithm is unclear due to the ambiguous convergence of QAOA,&#8221; they wrote in their paper.<\/p>\n<p>That&#8217;s a vast understatement, Aarsonson argues, because it has yet to be demonstrated that Schnorr\u2019s algorithm, even with QAOA, will work faster on a quantum device than a classical computer. And if a current laptop could break RSA, doing so on a quantum computer would be unnecessary.<\/p>\n<p>&#8220;All told, this is one of the most actively misleading quantum computing papers I\u2019ve seen in 25 years, and I\u2019ve seen \u2026 many,&#8221; he wrote. \u00ae<\/p>\n<\/p><\/div>\n<iframe data-lazy=\"true\" data-src=\"https:\/\/www.fiverr.com\/gig_widgets?id=U2FsdGVkX18x7XQvttUTrv1oEqmGNGTgvvCUiUoJ\/AP4z\/UyMz8lXGOLpu15jIMxBbTR0gmD5uBoFvhC4KWeALQRp3h\/X\/AwcVD0K8Wj9H\/ZzYKzcCNHosB9oS4SCJJFWiN85P9ICAc4OgCoE\/wHKIY7CDkf2\/DQ1vqGvk4smVe5cRDEmrLPCWi4FC8p40VUhSmWQ5udCm0zoJtorgWv3vbDQw0kKYkwn39ozAnQXDe+YvWMxkLFWA+O3TFwkJvdkIK+\/AUSnRssPKt5WHY0FhNOxnSPcLslEL4G4\/RfP95ve99U+kRnDy3X+KtzdQLY+u935ghON\/o3UE4IMv9oN6JX9RnxzL\/LRcOgnHigxStSGPKsZYtnz8RWNVT\/rOLAibqiWJadC5MYHRbekF3eg6FOGrQGkXYbsn0+a5aovnlLCbLwIqY9fcS17UX8J235iQ6cdmHNbrPeS84CMm34RA==&affiliate_id=1052423&strip_google_tagmanager=true\" loading=\"lazy\" data-with-title=\"true\" class=\"fiverr_nga_frame\" frameborder=\"0\" height=\"350\" width=\"100%\" referrerpolicy=\"no-referrer-when-downgrade\" data-mode=\"random_gigs\" onload=\" var frame = this; var script = document.createElement('script'); script.addEventListener('load', function() { window.FW_SDK.register(frame); }); script.setAttribute('src', 'https:\/\/www.fiverr.com\/gig_widgets\/sdk'); document.body.appendChild(script); \" ><\/iframe>\n<br \/><a href=\"https:\/\/go.theregister.com\/feed\/www.theregister.com\/2023\/01\/07\/chinese_researchers_claimed_quantum_encryption\/\">Source link <\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Briefly this week, it appeared that quantum computers might finally be ready to break 2048-bit RSA encryption, but that moment has passed. The occasion was&#8230;<\/p>\n","protected":false},"author":1,"featured_media":28421,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-28420","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tech-universe"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Chinese researchers&#039; claimed quantum encryption crack looks unlikely \u2022 The Register - mailinvest.blog<\/title>\n<meta name=\"description\" content=\"Technology is forever changing, and there are always new pieces of technology to replace obsolete ones. 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