{"id":1328,"date":"2011-10-10T23:23:16","date_gmt":"2011-10-10T23:23:16","guid":{"rendered":"http:\/\/nethemba.com\/de\/prelomeny-mifare-desfire-mf3icd40\/"},"modified":"2011-10-10T23:23:16","modified_gmt":"2011-10-10T23:23:16","slug":"prelomeny-mifare-desfire-mf3icd40","status":"publish","type":"post","link":"https:\/\/nethemba.com\/de\/prelomeny-mifare-desfire-mf3icd40\/","title":{"rendered":"Prelomen\u00fd Mifare DESFire MF3ICD40"},"content":{"rendered":"<p><strong>Mifare DESFire<\/strong> (MF3ICD40 a EV1) je ve\u013emi roz\u0161\u00edren\u00e1 \u010dipov\u00e1 RFID technol\u00f3gia, ktor\u00e1 sa e\u0161te doned\u00e1vne pokladala za ve\u013emi bezpe\u010dn\u00fa &#8211; v Bratislave sa vyu\u017e\u00edva napr\u00edklad v <a href=\"http:\/\/karta.bratislava.sk\/\">Bratislavskej Mestskej Karte<\/a>, v Prahe ako <a href=\"http:\/\/www.opencard.cz\/\">OpenCard.<\/a><\/p>\n<p>Nemeck\u00ed v\u00fdskumn\u00edci z Ruhr univerzity publikovali prelomenie \u010dipovej karty Mifare DESFire MF3ICD40. Ide o star\u0161iu verziu Mifare DESFire EV1, napriek tomu hojne vyu\u017e\u00edvan\u00fa v r\u00f4znych krajin\u00e1ch vr\u00e1tane \u010ceskej republiky. Samotn\u00fd \u00fatok trval 7 hod\u00edn, nezanechal \u017eiadne stopy na karte a celkov\u00e9 n\u00e1klady na zariadenia potrebn\u00e9 na \u00fatok boli $3000.<\/p>\n<p>Ide o \u00fatok, ktor\u00fd sa spolieha na anal\u00fdzu postrann\u00fdch kan\u00e1lov &#8211; zaznamen\u00e1van\u00ed a vyhodnocovan\u00ed elektromagnetick\u00e9ho vy\u017earovania danej karty alebo anal\u00fdzy jej in\u00fdch fyzick\u00fdch vlastnost\u00ed. Na samotn\u00fa extrakciu k\u013e\u00fa\u010da mus\u00ed by\u0165 dan\u00e1 \u010dipov\u00e1 karta umiestnen\u00e1 k pr\u00edslu\u0161nej RFID \u010d\u00edta\u010dke (s prednastaven\u00fdm k\u013e\u00fa\u010dom). Tento \u00fatok je kompletne pas\u00edvny bez akejko\u013evek modifik\u00e1cie karty, podobne ho nie je mo\u017en\u00e9 detekova\u0165 na \u00farovni samotnej karty.<\/p>\n<p>\u010cipov\u00e1 karta MF3ICD40 kompletne postr\u00e1da ak\u00fako\u013evek ochranu vo\u010di diferen\u010dnej odberovej anal\u00fdze (DPA) &#8211; d\u00e1 sa predpoklada\u0165, \u017ee cena ako aj \u010das samotn\u00e9ho \u00fatoku bude v bud\u00facnosti len klesa\u0165.<\/p>\n<p>NXP, v\u00fdrobca kariet Mifare, odpor\u00fa\u010da \u010do najsk\u00f4r <a href=\"http:\/\/mifare.net\/links\/news\/update-on-mifare-desfire-mf3icd40\/\">zmigrova\u0165 na bezpe\u010dnej\u0161iu technol\u00f3giu Mifare DESFire EV1<\/a>, ktor\u00e1 je Common Criteria EAL4+ certifikovan\u00e1 a chr\u00e1nen\u00e1 vo\u010di podobn\u00fdm \u00fatokom anal\u00fdzou postrann\u00fdch kan\u00e1lov.<\/p>\n<p>Je potrebn\u00e9 podotkn\u00fa\u0165, \u017ee pr\u00edpadn\u00e9 prelomenie bezpe\u010dnej\u0161ej technol\u00f3gie Mifare DESFire EV1 v bud\u00facnosti m\u00f4\u017ee v\u00e1\u017ene ohrozi\u0165 s\u00fa\u010dasn\u00e9 najbezpe\u010dnej\u0161ie \u010dipov\u00e9 karty pou\u017e\u00edvan\u00e9 na Slovensku a v \u010cech\u00e1ch.<\/p>\n<p><strong>Zdroje:<\/strong><\/p>\n<p><a href=\"http:\/\/www.theregister.co.uk\/2011\/10\/10\/mifare_desfire_smartcard_broken\/\">\u010cl\u00e1nok na theregister.co.uk &#8211; Scientists break card that secures homes, offices, transit<\/a><\/p>\n<p><a href=\"http:\/\/www.emsec.rub.de\/media\/crypto\/veroeffentlichungen\/2011\/10\/10\/desfire_2011_extended_1.pdf\">P\u00f4vodny paper od autorov \u00fatoku &#8211; Breaking Mifare DESFire MF3ICD40: Power Analysis and Templates in the Real World<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Mifare DESFire (MF3ICD40 a EV1) je ve\u013emi roz\u0161\u00edren\u00e1 \u010dipov\u00e1 RFID technol\u00f3gia, ktor\u00e1 sa e\u0161te doned\u00e1vne pokladala za ve\u013emi bezpe\u010dn\u00fa &#8211; v Bratislave sa vyu\u017e\u00edva napr\u00edklad v Bratislavskej Mestskej Karte, v Prahe ako OpenCard. Nemeck\u00ed v\u00fdskumn\u00edci z Ruhr univerzity publikovali prelomenie \u010dipovej karty Mifare DESFire MF3ICD40. Ide o star\u0161iu verziu Mifare DESFire EV1, napriek tomu hojne [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[11],"tags":[707,708],"class_list":["post-1328","post","type-post","status-publish","format-standard","hentry","category-unkategorisiert","tag-mf3icd40-de","tag-mifare-desfire-de"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Prelomen\u00fd Mifare DESFire MF3ICD40 - Nethemba<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/nethemba.com\/de\/prelomeny-mifare-desfire-mf3icd40\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Prelomen\u00fd Mifare DESFire MF3ICD40 - Nethemba\" \/>\n<meta property=\"og:description\" content=\"Mifare DESFire (MF3ICD40 a EV1) je ve\u013emi roz\u0161\u00edren\u00e1 \u010dipov\u00e1 RFID technol\u00f3gia, ktor\u00e1 sa e\u0161te doned\u00e1vne pokladala za ve\u013emi bezpe\u010dn\u00fa &#8211; v Bratislave sa vyu\u017e\u00edva napr\u00edklad v Bratislavskej Mestskej Karte, v Prahe ako OpenCard. Nemeck\u00ed v\u00fdskumn\u00edci z Ruhr univerzity publikovali prelomenie \u010dipovej karty Mifare DESFire MF3ICD40. 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