{"id":2675,"date":"2013-12-20T14:44:09","date_gmt":"2013-12-20T14:44:09","guid":{"rendered":"https:\/\/www.novonon.com\/blog\/?p=2675"},"modified":"2013-12-20T22:20:10","modified_gmt":"2013-12-20T22:20:10","slug":"deriving-cryptographic-keys-by-listening-to-cpus-coil-whine-boing-boing","status":"publish","type":"post","link":"https:\/\/www.novonon.com\/blog\/2013\/12\/20\/deriving-cryptographic-keys-by-listening-to-cpus-coil-whine-boing-boing\/","title":{"rendered":"Deriving cryptographic keys by listening to CPUs&#8217; &#8220;coil whine&#8221; &#8211; Boing Boing"},"content":{"rendered":"<p>[This is an incredibly subtle attack, and I&#8217;m shocked that it works. But, you know, it&#8217;s Adi Shamir, so that&#8217;s about as hi-crypto-cred as you can get&#8230;.-egg]<\/p>\n<p>In RSA Key Extraction via Low-Bandwidth Acoustic Cryptanalysis [PDF], a paper by Daniel Genkin and Eran Tromer of Tel Aviv University and Adi Shamir, the authors show that a sensitive microphone (such as the one in a compromised mobile phone) can be used to infer a secret cryptographic key being used by a nearby computer. The computer&#8217;s processor emits different quiet sounds (&#8220;coil whine&#8230;caused by voltage regulation circuits&#8221;) as it performs cryptographic operations, and these sounds, properly analyzed, can reveal the key.<\/p>\n<p>It&#8217;s a pretty stunning attack, the sort of thing that sounds like science fiction. But the researchers are unimpeachable (Shamir is the &#8220;S&#8221; in RSA), and their paper is very clear.<\/p>\n<p>via <a href=\"http:\/\/boingboing.net\/2013\/12\/20\/deriving-cryptographic-keys-by.html\">Deriving cryptographic keys by listening to CPUs&#8217; &#8220;coil whine&#8221; &#8211; Boing Boing<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>[This is an incredibly subtle attack, and I&#8217;m shocked that it works. But, you know, it&#8217;s Adi Shamir, so that&#8217;s about as hi-crypto-cred as you can get&#8230;.-egg] In RSA Key Extraction via Low-Bandwidth Acoustic Cryptanalysis [PDF], a paper by Daniel Genkin and Eran Tromer of Tel Aviv University and Adi Shamir, the authors show that [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false},"version":2}},"categories":[1],"tags":[],"class_list":["post-2675","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p3pfIY-H9","jetpack_sharing_enabled":true,"jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/www.novonon.com\/blog\/wp-json\/wp\/v2\/posts\/2675","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.novonon.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.novonon.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.novonon.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.novonon.com\/blog\/wp-json\/wp\/v2\/comments?post=2675"}],"version-history":[{"count":2,"href":"https:\/\/www.novonon.com\/blog\/wp-json\/wp\/v2\/posts\/2675\/revisions"}],"predecessor-version":[{"id":2683,"href":"https:\/\/www.novonon.com\/blog\/wp-json\/wp\/v2\/posts\/2675\/revisions\/2683"}],"wp:attachment":[{"href":"https:\/\/www.novonon.com\/blog\/wp-json\/wp\/v2\/media?parent=2675"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.novonon.com\/blog\/wp-json\/wp\/v2\/categories?post=2675"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.novonon.com\/blog\/wp-json\/wp\/v2\/tags?post=2675"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}