{"id":1439,"date":"2024-02-01T12:05:14","date_gmt":"2024-02-01T12:05:14","guid":{"rendered":"https:\/\/blog.lebara.co.uk\/?p=1439"},"modified":"2024-05-15T12:26:44","modified_gmt":"2024-05-15T11:26:44","slug":"demystifying-mobile-encryption-a-comprehensive-guide","status":"publish","type":"post","link":"https:\/\/blog.lebara.co.uk\/cs\/demystifying-mobile-encryption-a-comprehensive-guide\/","title":{"rendered":"Demystifikace mobiln\u00edho \u0161ifrov\u00e1n\u00ed: A Comprehensive Guide: A Comprehensive Guide"},"content":{"rendered":"<p>\u0160ifrov\u00e1n\u00ed mobiln\u00edch za\u0159\u00edzen\u00ed slou\u017e\u00ed jako \u0161t\u00edt chr\u00e1n\u00edc\u00ed na\u0161e digit\u00e1ln\u00ed \u017eivoty, jeho vnit\u0159n\u00ed fungov\u00e1n\u00ed v\u0161ak \u010dasto z\u016fst\u00e1v\u00e1 zahaleno tajemstv\u00edm. Oblast mobiln\u00edho \u0161ifrov\u00e1n\u00ed je v dne\u0161n\u00edm propojen\u00e9m sv\u011bt\u011b rozs\u00e1hl\u00e1 a z\u00e1sadn\u00ed - od ochrany citliv\u00fdch informac\u00ed a\u017e po zabezpe\u010den\u00ed komunikace. V tomto obs\u00e1hl\u00e9m pr\u016fvodci se pono\u0159\u00edme do hlubin mobiln\u00edho \u0161ifrov\u00e1n\u00ed, demystifikujeme jeho slo\u017eitost a osv\u011btl\u00edme jeho v\u00fdznam a praktick\u00e9 vyu\u017eit\u00ed. Vydejte se s n\u00e1mi na tuto pou\u010dnou cestu, abyste odhalili tajemstv\u00ed mobiln\u00edho \u0161ifrov\u00e1n\u00ed a vybavili se znalostmi, kter\u00e9 v\u00e1m umo\u017en\u00ed bezpe\u010dn\u011b se pohybovat v digit\u00e1ln\u00edm prost\u0159ed\u00ed.<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_83 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Obsah<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"P\u0159epnut\u00ed tabulky obsahu\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">P\u0159ep\u00edna\u010d<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/blog.lebara.co.uk\/cs\/demystifying-mobile-encryption-a-comprehensive-guide\/#Understanding_Mobile_Encryption\" >Porozum\u011bn\u00ed mobiln\u00edmu \u0161ifrov\u00e1n\u00ed<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/blog.lebara.co.uk\/cs\/demystifying-mobile-encryption-a-comprehensive-guide\/#The_Fundamentals_Explained\" >Vysv\u011btlen\u00ed z\u00e1klad\u016f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/blog.lebara.co.uk\/cs\/demystifying-mobile-encryption-a-comprehensive-guide\/#Why_Encryption_Matters_for_Your_Mobile\" >Pro\u010d je \u0161ifrov\u00e1n\u00ed d\u016fle\u017eit\u00e9 pro v\u00e1\u0161 mobiln\u00ed telefon<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/blog.lebara.co.uk\/cs\/demystifying-mobile-encryption-a-comprehensive-guide\/#Types_of_Mobile_Encryption\" >Typy \u0161ifrov\u00e1n\u00ed mobiln\u00edch za\u0159\u00edzen\u00ed<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/blog.lebara.co.uk\/cs\/demystifying-mobile-encryption-a-comprehensive-guide\/#Full_Disk_Encryption_FDE\" >\u0160ifrov\u00e1n\u00ed cel\u00e9ho disku (FDE)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/blog.lebara.co.uk\/cs\/demystifying-mobile-encryption-a-comprehensive-guide\/#File-Based_Encryption_FBE\" >\u0160ifrov\u00e1n\u00ed zalo\u017een\u00e9 na souborech (FBE)<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/blog.lebara.co.uk\/cs\/demystifying-mobile-encryption-a-comprehensive-guide\/#Breaking_Down_Encryption_Algorithms\" >Rozklad \u0161ifrovac\u00edch algoritm\u016f<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/blog.lebara.co.uk\/cs\/demystifying-mobile-encryption-a-comprehensive-guide\/#AES_The_Gold_Standard\" >AES: Zlat\u00fd standard<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/blog.lebara.co.uk\/cs\/demystifying-mobile-encryption-a-comprehensive-guide\/#RSA_and_ECC_Asymmetric_Alternatives\" >RSA a ECC: Asymetrick\u00e9 alternativy<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/blog.lebara.co.uk\/cs\/demystifying-mobile-encryption-a-comprehensive-guide\/#Implementing_Mobile_Encryption\" >Implementace mobiln\u00edho \u0161ifrov\u00e1n\u00ed<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/blog.lebara.co.uk\/cs\/demystifying-mobile-encryption-a-comprehensive-guide\/#Encrypting_Your_Android_Device\" >\u0160ifrov\u00e1n\u00ed za\u0159\u00edzen\u00ed se syst\u00e9mem Android<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/blog.lebara.co.uk\/cs\/demystifying-mobile-encryption-a-comprehensive-guide\/#Encrypting_Your_iOS_Device\" >\u0160ifrov\u00e1n\u00ed za\u0159\u00edzen\u00ed iOS<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/blog.lebara.co.uk\/cs\/demystifying-mobile-encryption-a-comprehensive-guide\/#Overcoming_Common_Encryption_Myths\" >P\u0159ekon\u00e1n\u00ed b\u011b\u017en\u00fdch m\u00fdt\u016f o \u0161ifrov\u00e1n\u00ed<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/blog.lebara.co.uk\/cs\/demystifying-mobile-encryption-a-comprehensive-guide\/#%E2%80%9CEncryption_Slows_Down_Your_Phone%E2%80%9D\" >\"\u0160ifrov\u00e1n\u00ed zpomaluje telefon\"<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/blog.lebara.co.uk\/cs\/demystifying-mobile-encryption-a-comprehensive-guide\/#%E2%80%9COnce_Encrypted_Data_is_Unbreakable%E2%80%9D\" >\"Jednou za\u0161ifrovan\u00e1 data jsou neprolomiteln\u00e1\"<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\" id=\"replaceWithId\"><span class=\"ez-toc-section\" id=\"Understanding_Mobile_Encryption\"><\/span>Porozum\u011bn\u00ed mobiln\u00edmu \u0161ifrov\u00e1n\u00ed<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"replaceWithId\"><span class=\"ez-toc-section\" id=\"The_Fundamentals_Explained\"><\/span>Vysv\u011btlen\u00ed z\u00e1klad\u016f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u0160ifrov\u00e1n\u00ed mobiln\u00edch za\u0159\u00edzen\u00ed je proces p\u0159evodu dat v mobiln\u00edch za\u0159\u00edzen\u00edch do form\u00e1tu, kter\u00fd nelze snadno interpretovat bez kl\u00ed\u010de nebo hesla. T\u00edm je zaji\u0161t\u011bno, \u017ee osobn\u00ed \u00fadaje, jako jsou fotografie, zpr\u00e1vy a bankovn\u00ed \u00fadaje, z\u016fstanou v bezpe\u010d\u00ed p\u0159ed neopr\u00e1vn\u011bn\u00fdm p\u0159\u00edstupem. Ve sv\u00e9 podstat\u011b \u0161ifrov\u00e1n\u00ed bere \u010diteln\u00e1 data a pomoc\u00ed algoritm\u016f je p\u0159ev\u00e1d\u00ed na \u0161ifrovan\u00fd text. Pouze se spr\u00e1vn\u00fdm \u0161ifrovac\u00edm kl\u00ed\u010dem lze data p\u0159ev\u00e9st zp\u011bt do p\u016fvodn\u00ed podoby - to je de\u0161ifrov\u00e1n\u00ed. V\u011bt\u0161ina modern\u00edch mobiln\u00edch za\u0159\u00edzen\u00ed je vybavena vestav\u011bn\u00fdmi funkcemi \u0161ifrov\u00e1n\u00ed, kter\u00e9 se obvykle aktivuj\u00ed po nastaven\u00ed p\u0159\u00edstupov\u00e9ho k\u00f3du. Tato funkce m\u00e1 z\u00e1sadn\u00ed v\u00fdznam pro ochranu dat v p\u0159\u00edpad\u011b kr\u00e1de\u017ee nebo ztr\u00e1ty za\u0159\u00edzen\u00ed. Pochopen\u00edm z\u00e1klad\u016f fungov\u00e1n\u00ed \u0161ifrov\u00e1n\u00ed mohou u\u017eivatel\u00e9 l\u00e9pe ocenit bezpe\u010dnostn\u00ed opat\u0159en\u00ed, kter\u00e1 jsou zavedena na ochranu jejich digit\u00e1ln\u00edch <a href=\"https:\/\/blog.lebara.co.uk\/cs\/what-is-the-ios-privacy-report-on-iphone\/\">ochrana osobn\u00edch \u00fadaj\u016f<\/a>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"replaceWithId\"><span class=\"ez-toc-section\" id=\"Why_Encryption_Matters_for_Your_Mobile\"><\/span>Pro\u010d je \u0161ifrov\u00e1n\u00ed d\u016fle\u017eit\u00e9 pro v\u00e1\u0161 mobiln\u00ed telefon<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u0160ifrov\u00e1n\u00ed je z\u00e1kladem zabezpe\u010den\u00ed mobiln\u00edch za\u0159\u00edzen\u00ed. V dne\u0161n\u00ed digit\u00e1ln\u00ed dob\u011b se chytr\u00e9 telefony staly \u00falo\u017ei\u0161t\u011bm citliv\u00fdch dat, v\u010detn\u011b osobn\u00edch \u00fadaj\u016f. <a href=\"https:\/\/blog.lebara.co.uk\/cs\/how-to-keep-phone-contacts-safe\/\">kontakty<\/a>, finan\u010dn\u00ed informace a soukrom\u00e1 sd\u011blen\u00ed. Pokud by va\u0161e mobiln\u00ed za\u0159\u00edzen\u00ed nebylo \u0161ifrov\u00e1no. <a href=\"https:\/\/blog.lebara.co.uk\/cs\/lost-your-smartphone-heres-how-to-track-and-retrieve-it-safely\/\">ztracen\u00e9<\/a> nebo <a href=\"https:\/\/blog.lebara.co.uk\/cs\/what-to-do-if-your-phone-is-stolen\/\">ukraden\u00e9<\/a>, by se v\u0161echny tyto \u00fadaje mohly dostat do nespr\u00e1vn\u00fdch rukou, co\u017e by mohlo v\u00e9st ke kr\u00e1de\u017ei identity, finan\u010dn\u00ed ztr\u00e1t\u011b nebo naru\u0161en\u00ed soukrom\u00ed. \u0160ifrov\u00e1n\u00ed funguje jako robustn\u00ed bari\u00e9ra, kter\u00e1 \u010din\u00ed data ne\u010diteln\u00fdmi a nepou\u017eiteln\u00fdmi bez p\u0159\u00edslu\u0161n\u00e9ho kl\u00ed\u010de nebo p\u0159\u00edstupov\u00e9ho k\u00f3du. S rostouc\u00ed hrozbou kybernetick\u00fdch \u00fatok\u016f nav\u00edc \u0161ifrov\u00e1n\u00ed nab\u00edz\u00ed \u00farove\u0148 zabezpe\u010den\u00ed, kter\u00e1 m\u016f\u017ee pomoci ochr\u00e1nit va\u0161e data, i kdy\u017e jsou p\u0159en\u00e1\u0161ena p\u0159es ve\u0159ejn\u00e9 nebo nezabezpe\u010den\u00e9 s\u00edt\u011b. \u0160ifrov\u00e1n\u00ed v mobiln\u00edm telefonu v podstat\u011b nen\u00ed jen mo\u017enost\u00ed, ale nutnost\u00ed pro ochranu va\u0161ich osobn\u00edch \u00fadaj\u016f v nep\u0159edv\u00eddateln\u00e9m digit\u00e1ln\u00edm prost\u0159ed\u00ed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"replaceWithId\"><span class=\"ez-toc-section\" id=\"Types_of_Mobile_Encryption\"><\/span>Typy \u0161ifrov\u00e1n\u00ed mobiln\u00edch za\u0159\u00edzen\u00ed<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"replaceWithId\"><span class=\"ez-toc-section\" id=\"Full_Disk_Encryption_FDE\"><\/span>\u0160ifrov\u00e1n\u00ed cel\u00e9ho disku (FDE)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u0160ifrov\u00e1n\u00ed cel\u00e9ho disku (FDE) je metoda, kter\u00e1 \u0161ifruje v\u0161echna data ulo\u017een\u00e1 na disku mobiln\u00edho za\u0159\u00edzen\u00ed. Tento typ \u0161ifrov\u00e1n\u00ed prob\u00edh\u00e1 na hardwarov\u00e9 \u00farovni a je ur\u010den k ochran\u011b cel\u00e9ho souborov\u00e9ho syst\u00e9mu za\u0159\u00edzen\u00ed. Kdy\u017e je zapnuta funkce FDE, v\u0161e od <a href=\"https:\/\/blog.lebara.co.uk\/cs\/why-keeping-your-smartphones-operating-system-up-to-date-is-essential\/\">opera\u010dn\u00ed syst\u00e9m<\/a> k aplikac\u00edm a u\u017eivatelsk\u00fdm soubor\u016fm je za\u0161ifrov\u00e1n. P\u0159\u00edstup k za\u0161ifrovan\u00fdm dat\u016fm je mo\u017en\u00fd pouze po \u00fasp\u011b\u0161n\u00e9m ov\u011b\u0159en\u00ed u\u017eivatele, obvykle pomoc\u00ed hesla nebo k\u00f3du PIN. To znamen\u00e1, \u017ee pokud je mobiln\u00ed za\u0159\u00edzen\u00ed vypnuto nebo restartov\u00e1no, data z\u016fst\u00e1vaj\u00ed chr\u00e1n\u011bna, dokud nejsou zad\u00e1ny spr\u00e1vn\u00e9 p\u0159ihla\u0161ovac\u00ed \u00fadaje. FDE je silnou ochranou proti naru\u0161en\u00ed dat, zejm\u00e9na v p\u0159\u00edpad\u011b za\u0159\u00edzen\u00ed, kter\u00e1 mohou b\u00fdt ztracena nebo odcizena. Nejd\u016fle\u017eit\u011bj\u0161\u00ed je, \u017ee poskytuje komplexn\u00ed ochranu, kter\u00e1 vy\u017eaduje minim\u00e1ln\u00ed interakci u\u017eivatele, a zaji\u0161\u0165uje, \u017ee v\u0161echna data z\u016fstanou ve v\u00fdchoz\u00edm nastaven\u00ed v bezpe\u010d\u00ed.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"replaceWithId\"><span class=\"ez-toc-section\" id=\"File-Based_Encryption_FBE\"><\/span>\u0160ifrov\u00e1n\u00ed zalo\u017een\u00e9 na souborech (FBE)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u0160ifrov\u00e1n\u00ed zalo\u017een\u00e9 na souborech (FBE) nab\u00edz\u00ed v porovn\u00e1n\u00ed s \u0161ifrov\u00e1n\u00edm cel\u00e9ho disku podrobn\u011bj\u0161\u00ed p\u0159\u00edstup k \u0161ifrov\u00e1n\u00ed. P\u0159i FBE jsou jednotliv\u00e9 soubory \u0161ifrov\u00e1ny r\u016fzn\u00fdmi kl\u00ed\u010di, kter\u00e9 lze odemknout nez\u00e1visle na sob\u011b. Tato metoda umo\u017e\u0148uje zp\u0159\u00edstupnit n\u011bkter\u00e1 data, nap\u0159\u00edklad ozn\u00e1men\u00ed nebo p\u0159\u00edchoz\u00ed hovory, i kdy\u017e je za\u0159\u00edzen\u00ed uzam\u010deno, a p\u0159itom zachovat bezpe\u010dnost citliv\u00fdch informac\u00ed. FBE zlep\u0161uje pou\u017eitelnost, ani\u017e by bylo ohro\u017eeno zabezpe\u010den\u00ed, a poskytuje u\u017eivatel\u016fm p\u0159izp\u016fsoben\u00e9 prost\u0159ed\u00ed, v n\u011bm\u017e mohou interagovat s ur\u010dit\u00fdmi prvky sv\u00e9ho za\u0159\u00edzen\u00ed, zat\u00edmco z\u00e1kladn\u00ed data z\u016fst\u00e1vaj\u00ed chr\u00e1n\u011bna. Tento typ \u0161ifrov\u00e1n\u00ed nav\u00edc podporuje v\u00edce u\u017eivatelsk\u00fdch profil\u016f t\u00edm, \u017ee bezpe\u010dn\u011b izoluje data ka\u017ed\u00e9ho u\u017eivatele. To je u\u017eite\u010dn\u00e9 zejm\u00e9na u za\u0159\u00edzen\u00ed, kter\u00e1 maj\u00ed u\u017eivatelsk\u00e9 profily pro pracovn\u00ed a osobn\u00ed pou\u017eit\u00ed. Zaveden\u00ed technologie FBE v modern\u00edch chytr\u00fdch telefonech znamen\u00e1 v\u00fdznamn\u00fd pokrok v oblasti mobiln\u00edho zabezpe\u010den\u00ed a nab\u00edz\u00ed u\u017eivatel\u016fm flexibilitu i robustn\u00ed ochranu dat.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"replaceWithId\"><span class=\"ez-toc-section\" id=\"Breaking_Down_Encryption_Algorithms\"><\/span>Rozklad \u0161ifrovac\u00edch algoritm\u016f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"replaceWithId\"><span class=\"ez-toc-section\" id=\"AES_The_Gold_Standard\"><\/span>AES: Zlat\u00fd standard<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u0160ifrovac\u00ed algoritmus AES (Advanced Encryption Standard) je obecn\u011b pova\u017eov\u00e1n za zlat\u00fd standard \u0161ifrovac\u00edch algoritm\u016f. Jedn\u00e1 se o techniku \u0161ifrov\u00e1n\u00ed se symetrick\u00fdm kl\u00ed\u010dem, co\u017e znamen\u00e1, \u017ee pou\u017e\u00edv\u00e1 stejn\u00fd kl\u00ed\u010d pro \u0161ifrov\u00e1n\u00ed i de\u0161ifrov\u00e1n\u00ed dat. AES se d\u00edky sv\u00e9 spolehlivosti a bezpe\u010dnosti stal obl\u00edbenou \u0161ifrovac\u00ed metodou. Je schv\u00e1lena vl\u00e1dn\u00edmi org\u00e1ny a pou\u017e\u00edv\u00e1 se celosv\u011btov\u011b k ochran\u011b citliv\u00fdch informac\u00ed. AES pracuje s pevn\u011b danou velikost\u00ed bloku dat, obvykle 128 bit\u016f, a nab\u00edz\u00ed r\u016fzn\u00e9 d\u00e9lky kl\u00ed\u010d\u016f - 128, 192 nebo 256 bit\u016f - p\u0159i\u010dem\u017e 256bitov\u00fd kl\u00ed\u010d je nejbezpe\u010dn\u011bj\u0161\u00ed. D\u00edky t\u00e9to univerz\u00e1lnosti je vhodn\u00fd pro r\u016fzn\u00e9 bezpe\u010dnostn\u00ed pot\u0159eby, od zabezpe\u010den\u00ed osobn\u00edch mobiln\u00edch za\u0159\u00edzen\u00ed a\u017e po ochranu utajovan\u00e9 vl\u00e1dn\u00ed komunikace. Jeho s\u00edla spo\u010d\u00edv\u00e1 ve schopnosti odolat v\u0161em zn\u00e1m\u00fdm praktick\u00fdm \u00fatok\u016fm, co\u017e zaji\u0161\u0165uje, \u017ee data za\u0161ifrovan\u00e1 pomoc\u00ed AES z\u016fstanou v bezpe\u010d\u00ed p\u0159ed neopr\u00e1vn\u011bn\u00fdm p\u0159\u00edstupem.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"replaceWithId\"><span class=\"ez-toc-section\" id=\"RSA_and_ECC_Asymmetric_Alternatives\"><\/span>RSA a ECC: Asymetrick\u00e9 alternativy<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>RSA (Rivest-Shamir-Adleman) a ECC (Elliptic Curve Cryptography) jsou dva typy asymetrick\u00fdch \u0161ifrovac\u00edch algoritm\u016f. Na rozd\u00edl od AES pou\u017e\u00edvaj\u00ed asymetrick\u00e9 algoritmy dvojice kl\u00ed\u010d\u016f: ve\u0159ejn\u00fd kl\u00ed\u010d k \u0161ifrov\u00e1n\u00ed dat a soukrom\u00fd kl\u00ed\u010d k jejich de\u0161ifrov\u00e1n\u00ed. Algoritmus RSA se stal z\u00e1kladn\u00edm algoritmem pro bezpe\u010dnou komunikaci p\u0159es internet d\u00edky sv\u00e9mu \u0161irok\u00e9mu roz\u0161\u00ed\u0159en\u00ed a robustn\u00edmu zabezpe\u010den\u00ed. B\u011b\u017en\u011b se pou\u017e\u00edv\u00e1 v digit\u00e1ln\u00edch podpisech, zabezpe\u010den\u00fdch e-mailech a dal\u0161\u00edch form\u00e1ch bezpe\u010dn\u00e9 online komunikace.<\/p>\n\n\n\n<p>ECC naproti tomu nab\u00edz\u00ed podobnou \u00farove\u0148 zabezpe\u010den\u00ed jako RSA, ale s men\u0161\u00ed velikost\u00ed kl\u00ed\u010de. D\u00edky tomu je ECC obzvl\u00e1\u0161t\u011b u\u017eite\u010dn\u00e9 pro mobiln\u00ed \u0161ifrov\u00e1n\u00ed, kde je v\u00fdpo\u010detn\u00ed v\u00fdkon a <a href=\"https:\/\/blog.lebara.co.uk\/cs\/say-goodbye-to-storage-woes-simple-steps-to-free-up-phone-space\/\">skladov\u00e1n\u00ed<\/a> jsou omezen\u011bj\u0161\u00ed. ECC je st\u00e1le obl\u00edben\u011bj\u0161\u00ed, proto\u017ee poskytuje siln\u00e9 zabezpe\u010den\u00ed p\u0159i men\u0161\u00ed spot\u0159eb\u011b zdroj\u016f, co\u017e je ide\u00e1ln\u00ed pro omezen\u00e9 prost\u0159ed\u00ed mobiln\u00edch za\u0159\u00edzen\u00ed. RSA i ECC jsou d\u016fle\u017eit\u00fdmi n\u00e1stroji v sad\u011b \u0161ifrovac\u00edch n\u00e1stroj\u016f, kter\u00e9 u\u017eivatel\u016fm zaji\u0161\u0165uj\u00ed p\u0159\u00edstup k bezpe\u010dn\u00fdm a \u00fa\u010dinn\u00fdm kryptografick\u00fdm mo\u017enostem.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"replaceWithId\"><span class=\"ez-toc-section\" id=\"Implementing_Mobile_Encryption\"><\/span>Implementace mobiln\u00edho \u0161ifrov\u00e1n\u00ed<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"replaceWithId\"><span class=\"ez-toc-section\" id=\"Encrypting_Your_Android_Device\"><\/span>\u0160ifrov\u00e1n\u00ed za\u0159\u00edzen\u00ed se syst\u00e9mem Android<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u0160ifrov\u00e1n\u00ed za\u0159\u00edzen\u00ed se syst\u00e9mem Android je jednoduch\u00fd proces, kter\u00fd v\u00fdrazn\u011b zvy\u0161uje va\u0161i bezpe\u010dnost. V\u011bt\u0161ina nov\u00fdch za\u0159\u00edzen\u00ed se syst\u00e9mem Android m\u00e1 ve v\u00fdchoz\u00edm nastaven\u00ed \u0161ifrov\u00e1n\u00ed povoleno. Pokud v\u0161ak m\u00e1te star\u0161\u00ed za\u0159\u00edzen\u00ed, mo\u017en\u00e1 jej budete muset povolit ru\u010dn\u011b. Chcete-li to prov\u00e9st, p\u0159ejd\u011bte do nastaven\u00ed \"Zabezpe\u010den\u00ed\" sv\u00e9ho za\u0159\u00edzen\u00ed a najd\u011bte mo\u017enost \u0161ifrov\u00e1n\u00ed. Zde m\u016f\u017eete za\u0159\u00edzen\u00ed za\u0161ifrovat nastaven\u00edm bezpe\u010dn\u00e9ho hesla pro uzam\u010den\u00ed obrazovky, pokud jste tak je\u0161t\u011b neu\u010dinili.<\/p>\n\n\n\n<p>Proces m\u016f\u017ee trvat hodinu i d\u00e9le v z\u00e1vislosti na mno\u017estv\u00ed dat a telefon mus\u00ed b\u00fdt nabit\u00fd nebo p\u0159ipojen\u00fd k s\u00edti, aby nedo\u0161lo k p\u0159eru\u0161en\u00ed. Po za\u0161ifrov\u00e1n\u00ed budou v\u0161echna va\u0161e data v\u010detn\u011b aplikac\u00ed a soubor\u016f chr\u00e1n\u011bna a p\u0159\u00edstup k nim bude mo\u017en\u00fd pouze po zad\u00e1n\u00ed spr\u00e1vn\u00e9ho hesla. Nezapome\u0148te, \u017ee pokud se rozhodnete za\u0161ifrovat star\u0161\u00ed za\u0159\u00edzen\u00ed, je vhodn\u00e9 data nejprve z\u00e1lohovat, proto\u017ee proces \u0161ifrov\u00e1n\u00ed m\u016f\u017ee n\u011bkdy zp\u016fsobit ztr\u00e1tu dat v za\u0159\u00edzen\u00edch se star\u0161\u00edm hardwarem.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"replaceWithId\"><span class=\"ez-toc-section\" id=\"Encrypting_Your_iOS_Device\"><\/span>\u0160ifrov\u00e1n\u00ed za\u0159\u00edzen\u00ed iOS<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>U u\u017eivatel\u016f iOS se \u0161ifrov\u00e1n\u00ed automaticky zapne, kdy\u017e v za\u0159\u00edzen\u00ed nastav\u00edte p\u0159\u00edstupov\u00fd k\u00f3d. <a href=\"https:\/\/blog.lebara.co.uk\/cs\/a-guide-to-the-top-iphones-for-business-and-pleasure\/\">Apple<\/a> u\u010dinila \u0161ifrov\u00e1n\u00ed ned\u00edlnou sou\u010d\u00e1st\u00ed platformy iOS a zajistila, \u017ee u\u017eivatelsk\u00e1 data jsou ve v\u00fdchoz\u00edm nastaven\u00ed chr\u00e1n\u011bna. Chcete-li za\u0159\u00edzen\u00ed se syst\u00e9mem iOS za\u0161ifrovat, p\u0159ejd\u011bte do nastaven\u00ed \"Touch ID a p\u0159\u00edstupov\u00fd k\u00f3d\" nebo \"Face ID a p\u0159\u00edstupov\u00fd k\u00f3d\" a podle pokyn\u016f vytvo\u0159te p\u0159\u00edstupov\u00fd k\u00f3d. Po nastaven\u00ed jsou data v za\u0159\u00edzen\u00ed chr\u00e1n\u011bna hardwarov\u00fdm \u0161ifrov\u00e1n\u00edm.<\/p>\n\n\n\n<p>\u0160ifrov\u00e1n\u00ed v syst\u00e9mu iOS je obzvl\u00e1\u0161\u0165 siln\u00e9, proto\u017ee \u0161ifrovac\u00ed kl\u00ed\u010de jsou v\u00e1z\u00e1ny na hardware za\u0159\u00edzen\u00ed, tak\u017ee p\u0159\u00edstup k dat\u016fm je bez p\u0159\u00edstupov\u00e9ho k\u00f3du velmi obt\u00ed\u017en\u00fd. Nezapome\u0148te, \u017ee s\u00edla \u0161ifrov\u00e1n\u00ed je tak dobr\u00e1, jak dobr\u00fd je zvolen\u00fd p\u0159\u00edstupov\u00fd k\u00f3d, proto je d\u016fle\u017eit\u00e9 zvolit siln\u00fd a jedine\u010dn\u00fd p\u0159\u00edstupov\u00fd k\u00f3d. Krom\u011b toho mohou funkce, jako je \"Naj\u00edt m\u016fj iPhone\", d\u00e1le zv\u00fd\u0161it zabezpe\u010den\u00ed t\u00edm, \u017ee v p\u0159\u00edpad\u011b ztr\u00e1ty nebo odcizen\u00ed za\u0159\u00edzen\u00ed umo\u017en\u00ed jeho vymaz\u00e1n\u00ed na d\u00e1lku, \u010d\u00edm\u017e zajist\u00ed, \u017ee va\u0161e data z\u016fstanou d\u016fv\u011brn\u00e1.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"replaceWithId\"><span class=\"ez-toc-section\" id=\"Overcoming_Common_Encryption_Myths\"><\/span>P\u0159ekon\u00e1n\u00ed b\u011b\u017en\u00fdch m\u00fdt\u016f o \u0161ifrov\u00e1n\u00ed<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"replaceWithId\"><span class=\"ez-toc-section\" id=\"%E2%80%9CEncryption_Slows_Down_Your_Phone%E2%80%9D\"><\/span>\"\u0160ifrov\u00e1n\u00ed zpomaluje telefon\"<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Domn\u011bnka, \u017ee \u0161ifrov\u00e1n\u00ed v\u00fdrazn\u011b zpomaluje telefon, je roz\u0161\u00ed\u0159en\u00fd omyl. Modern\u00ed chytr\u00e9 telefony jsou vybaveny procesory, kter\u00e9 zvl\u00e1dnou \u0161ifrovac\u00ed \u00falohy efektivn\u011b a s minim\u00e1ln\u00edm dopadem na v\u00fdkon. Mnoho za\u0159\u00edzen\u00ed je ve skute\u010dnosti vybaveno speci\u00e1ln\u00edm hardwarem pro rychl\u00e9 prov\u00e1d\u011bn\u00ed operac\u00ed \u0161ifrov\u00e1n\u00ed a de\u0161ifrov\u00e1n\u00ed. Je sice pravda, \u017ee u star\u0161\u00edch model\u016f m\u016f\u017ee doj\u00edt k m\u00edrn\u00e9mu zpomalen\u00ed kv\u016fli m\u00e9n\u011b v\u00fdkonn\u00fdm procesor\u016fm, ale rozd\u00edl v rychlosti pro ka\u017edodenn\u00ed \u010dinnosti nen\u00ed zpravidla patrn\u00fd.<\/p>\n\n\n\n<p>V\u00fdhody \u0161ifrov\u00e1n\u00ed nav\u00edc zdaleka p\u0159eva\u017euj\u00ed nad potenci\u00e1ln\u00edm margin\u00e1ln\u00edm sn\u00ed\u017een\u00edm rychlosti. S rostouc\u00edm mno\u017estv\u00edm osobn\u00edch \u00fadaj\u016f ulo\u017een\u00fdch v mobiln\u00edch za\u0159\u00edzen\u00edch je bezpe\u010dnost, kterou \u0161ifrov\u00e1n\u00ed poskytuje, nezbytn\u00e1. Je to mal\u00e1 cena za ochranu va\u0161ich osobn\u00edch \u00fadaj\u016f p\u0159ed neopr\u00e1vn\u011bn\u00fdm p\u0159\u00edstupem, kter\u00e1 v\u00e1m zajist\u00ed klid, pokud jde o va\u0161e digit\u00e1ln\u00ed soukrom\u00ed.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"replaceWithId\"><span class=\"ez-toc-section\" id=\"%E2%80%9COnce_Encrypted_Data_is_Unbreakable%E2%80%9D\"><\/span>\"Jednou za\u0161ifrovan\u00e1 data jsou neprolomiteln\u00e1\"<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Je roz\u0161\u00ed\u0159en\u00fd n\u00e1zor, \u017ee jakmile jsou data jednou za\u0161ifrov\u00e1na, jsou zcela neprolomiteln\u00e1. \u0160ifrov\u00e1n\u00ed sice v\u00fdrazn\u011b zvy\u0161uje bezpe\u010dnost dat, ale \u017e\u00e1dn\u00fd syst\u00e9m nen\u00ed zcela neomyln\u00fd. \u0160ifrovac\u00ed algoritmy jsou navr\u017eeny tak, aby p\u0159\u00edstup k za\u0161ifrovan\u00fdm informac\u00edm bez spr\u00e1vn\u00e9ho kl\u00ed\u010de byl velmi obt\u00ed\u017en\u00fd a \u010dasov\u011b n\u00e1ro\u010dn\u00fd. S rozvojem technologi\u00ed se v\u0161ak vyv\u00edjej\u00ed i metody pou\u017e\u00edvan\u00e9 kyberzlo\u010dinci.<\/p>\n\n\n\n<p>P\u0159esto je d\u016fle\u017eit\u00e9, abyste sv\u016fj software aktualizovali, proto\u017ee aktualizace \u010dasto obsahuj\u00ed z\u00e1platy zn\u00e1m\u00fdch zranitelnost\u00ed. D\u016fle\u017eit\u00e9 je tak\u00e9 b\u00fdt informov\u00e1n o nejnov\u011bj\u0161\u00edch bezpe\u010dnostn\u00edch hrozb\u00e1ch a udr\u017eovat siln\u00e1 a jedine\u010dn\u00e1 hesla. Nav\u00edc zapnut\u00ed dal\u0161\u00edch bezpe\u010dnostn\u00edch funkc\u00ed, jako je dvoufaktorov\u00e9 ov\u011b\u0159ov\u00e1n\u00ed, pokud je k dispozici, m\u016f\u017ee poskytnout dal\u0161\u00ed vrstvu ochrany. Pamatujte, \u017ee i kdy\u017e je d\u00edky \u0161ifrov\u00e1n\u00ed prolomen\u00ed va\u0161ich dat velmi obt\u00ed\u017en\u00e9, je pro ochranu va\u0161ich digit\u00e1ln\u00edch informac\u00ed stejn\u011b d\u016fle\u017eit\u00e9 udr\u017eovat spr\u00e1vn\u00e9 bezpe\u010dnostn\u00ed n\u00e1vyky.<\/p>","protected":false},"excerpt":{"rendered":"<p>\u0160ifrov\u00e1n\u00ed mobiln\u00edch za\u0159\u00edzen\u00ed slou\u017e\u00ed jako \u0161t\u00edt chr\u00e1n\u00edc\u00ed na\u0161e digit\u00e1ln\u00ed \u017eivoty, jeho vnit\u0159n\u00ed fungov\u00e1n\u00ed v\u0161ak \u010dasto z\u016fst\u00e1v\u00e1 zahaleno tajemstv\u00edm. Oblast mobiln\u00edho \u0161ifrov\u00e1n\u00ed je v dne\u0161n\u00edm propojen\u00e9m sv\u011bt\u011b rozs\u00e1hl\u00e1 a z\u00e1sadn\u00ed - od ochrany citliv\u00fdch informac\u00ed a\u017e po zabezpe\u010den\u00ed komunikace. V tomto obs\u00e1hl\u00e9m pr\u016fvodci se pono\u0159\u00edme do hlubin mobiln\u00edho \u0161ifrov\u00e1n\u00ed, demystifikujeme jeho slo\u017eitost a...<\/p>\n<div><a class=\"read-more button-link\" href=\"https:\/\/blog.lebara.co.uk\/cs\/demystifying-mobile-encryption-a-comprehensive-guide\/\">P\u0159e\u010dt\u011bte si v\u00edce<\/a><\/div>","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[22],"tags":[],"class_list":["post-1439","post","type-post","status-publish","format-standard","hentry","category-phones","clearfix",false],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/blog.lebara.co.uk\/cs\/wp-json\/wp\/v2\/posts\/1439","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.lebara.co.uk\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.lebara.co.uk\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.lebara.co.uk\/cs\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.lebara.co.uk\/cs\/wp-json\/wp\/v2\/comments?post=1439"}],"version-history":[{"count":1,"href":"https:\/\/blog.lebara.co.uk\/cs\/wp-json\/wp\/v2\/posts\/1439\/revisions"}],"predecessor-version":[{"id":1526,"href":"https:\/\/blog.lebara.co.uk\/cs\/wp-json\/wp\/v2\/posts\/1439\/revisions\/1526"}],"wp:attachment":[{"href":"https:\/\/blog.lebara.co.uk\/cs\/wp-json\/wp\/v2\/media?parent=1439"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.lebara.co.uk\/cs\/wp-json\/wp\/v2\/categories?post=1439"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.lebara.co.uk\/cs\/wp-json\/wp\/v2\/tags?post=1439"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}