{"id":74249,"date":"2020-03-15T20:42:16","date_gmt":"2020-03-15T17:42:16","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/issledovanie-dlya-bezopasnosti-shestiznachnye-pin-kody-ne-luchshe-chem-chetyrehznachnye"},"modified":"2020-03-15T20:42:16","modified_gmt":"2020-03-15T17:42:16","slug":"issledovanie-dlya-bezopasnosti-shestiznachnye-pin-kody-ne-luchshe-chem-chetyrehznachnye","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sv\/blog\/news\/issledovanie-dlya-bezopasnosti-shestiznachnye-pin-kody-ne-luchshe-chem-chetyrehznachnye","title":{"rendered":"Studie: F\u00f6r s\u00e4kerhet \u00e4r sexsiffriga PIN-koder inte b\u00e4ttre \u00e4n fyrsiffriga.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Ett tyskt-amerikanskt forskarteam med volont\u00e4rer granskade<\/a><\/noindex> och j\u00e4mf\u00f6rde s\u00e4kerheten hos sexsiffriga och fyrsiffriga PIN-koder f\u00f6r att l\u00e5sa mobiltelefoner. I h\u00e4ndelse av att mobiltelefonen f\u00f6rloras eller stj\u00e4ls \u00e4r det b\u00e4st att vara s\u00e4ker p\u00e5 att informationen \u00e4r skyddad mot intr\u00e5ng. \u00c4R det verkligen s\u00e5?<\/p>\n

\"Studie:<\/p>\n

Filip Markert fr\u00e5n Horst G\u00f6rtz Institute for IT Security vid Ruhr-Universit\u00e4t Bochum och Maximilian Golla fr\u00e5n Max Planck Institute for Security and Privacy uppt\u00e4ckte att psykologin p\u00e5 praktisk niv\u00e5 \u00f6verv\u00e4ger matematiken. Ur matematiskt perspektiv \u00e4r s\u00e4kerheten hos sexsiffriga PIN-koder avsev\u00e4rt h\u00f6gre \u00e4n f\u00f6r fyrsiffriga. Men anv\u00e4ndare f\u00f6redrar vissa kombinationer av siffror, vilket g\u00f6r att vissa PIN-koder anv\u00e4nds oftare och n\u00e4stan utpl\u00e5nar skillnaden i komplexitet mellan sex- och fyrsiffriga koder.<\/p>\n

I studien anv\u00e4nde deltagarna Apple- eller Android-enheter och st\u00e4llde in fyr- eller sexsiffriga PIN-koder. P\u00e5 Apple-enheter med iOS 9 introducerades en svart lista \u00f6ver f\u00f6rbjudna numeriska kombinationer f\u00f6r PIN-koder, vilka automatiskt blockerades. Forskarna hade tillg\u00e5ng till b\u00e5da svarta listor (f\u00f6r 6- och 4-siffriga koder) och k\u00f6rde en ber\u00e4kning av kombinationer p\u00e5 datorn. Den svarta listan f\u00f6r fyrsiffriga PIN-koder fr\u00e5n Apple inneh\u00f6ll 274 nummer, medan den f\u00f6r sexsiffriga inneh\u00f6ll 2910.<\/p>\n

F\u00f6r Apple-enheter ges anv\u00e4ndaren 10 f\u00f6rs\u00f6k att ange PIN-koden. Enligt forskarna \u00e4r den svarta listan i s\u00e5dana fall n\u00e4stan meningsl\u00f6s. Det visade sig vara sv\u00e5rt att gissa r\u00e4tt nummer p\u00e5 10 f\u00f6rs\u00f6k, \u00e4ven om det \u00e4r mycket enkelt (som 123456). F\u00f6r Android-enheter kan man under 11 timmar g\u00f6ra 100 inmatningar av PIN-koden, och i det h\u00e4r fallet \u00e4r den svarta listan ett mer p\u00e5litligt s\u00e4tt att avskr\u00e4cka anv\u00e4ndaren fr\u00e5n att skriva in en enkel kombination och f\u00f6rhindra att mobiltelefonen hackas genom att prova nummer.<\/p>\n

<\/center><\/p>\n

I experimentet valde 1220 deltagare sj\u00e4lva PIN-koder, medan experimentledarna f\u00f6rs\u00f6kte gissa dem med 10, 30 eller 100 f\u00f6rs\u00f6k. Kombinationerna testades p\u00e5 tv\u00e5 s\u00e4tt. Om en svartlista aktiverades, attackerades smartphones utan att anv\u00e4nda nummer fr\u00e5n listan. Utan aktiverad svartlista inleddes gissningen med att prova nummer fr\u00e5n svartlistan (som de mest anv\u00e4nda). Under experimentet visade det sig att en f\u00f6rnuftigt vald 4-siffrig PIN-kod, med begr\u00e4nsning av antalet inmatningsf\u00f6rs\u00f6k, \u00e4r tillr\u00e4ckligt s\u00e4ker och till och med n\u00e5got mer p\u00e5litlig \u00e4n en 6-siffrig.<\/p>\n

De mest f\u00f6rekommande 4-siffriga PIN-koderna visade sig vara kombinationerna 1234, 0000, 1111, 5555 och 2580 (detta \u00e4r en vertikal kolumn p\u00e5 sifferknappsats). En djupare analys visade att den perfekta svarta listan f\u00f6r fyrsiffriga PIN-koder b\u00f6r inneh\u00e5lla cirka 1000 poster och n\u00e5got skilja sig fr\u00e5n den som togs fram f\u00f6r Apple-enheter.<\/p>\n

\"Studie:<\/p>\n

Till slut kom forskarna fram till att 4-siffriga och 6-siffriga PIN-koder \u00e4r mindre s\u00e4kra \u00e4n l\u00f6senord, men mer p\u00e5litliga \u00e4n grafisk l\u00e5sning av smartphones (av m\u00f6nster). Den fullst\u00e4ndiga rapporten om forskningen<\/a><\/noindex> kommer att presenteras i San Francisco i maj 2020 p\u00e5 konferensen IEEE Symposium on Security and Privacy.<\/p>\n

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K\u00e4lla: 3dnews.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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