{"id":9627,"date":"2022-03-07T08:00:00","date_gmt":"2022-03-07T08:00:00","guid":{"rendered":"https:\/\/bezpecnenanete.eset.com\/sk\/?p=9627"},"modified":"2022-04-27T10:39:44","modified_gmt":"2022-04-27T10:39:44","slug":"na-co-je-sifrovanie-a-sifrovana-komunikacia-na-internete","status":"publish","type":"post","link":"https:\/\/bezpecnenanete.eset.com\/sk\/cybernews\/na-co-je-sifrovanie-a-sifrovana-komunikacia-na-internete\/","title":{"rendered":"Na \u010do je \u0161ifrovanie a \u0161ifrovan\u00e1 komunik\u00e1cia na internete?"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"536\" src=\"https:\/\/bezpecnenanete.eset.com\/sk\/wp-content\/uploads\/2022\/03\/hlavny-banner-1200x628_2022_14-1024x536.png\" alt=\"\u0161ifrovanie a \u0161ifrovan\u00e1 komunik\u00e1cia na internete nahladovy obrazok\" class=\"wp-image-9628\" srcset=\"https:\/\/bezpecnenanete.eset.com\/sk\/wp-content\/uploads\/2022\/03\/hlavny-banner-1200x628_2022_14-1024x536.png 1024w, https:\/\/bezpecnenanete.eset.com\/sk\/wp-content\/uploads\/2022\/03\/hlavny-banner-1200x628_2022_14-300x157.png 300w, https:\/\/bezpecnenanete.eset.com\/sk\/wp-content\/uploads\/2022\/03\/hlavny-banner-1200x628_2022_14-768x402.png 768w, https:\/\/bezpecnenanete.eset.com\/sk\/wp-content\/uploads\/2022\/03\/hlavny-banner-1200x628_2022_14-370x194.png 370w, https:\/\/bezpecnenanete.eset.com\/sk\/wp-content\/uploads\/2022\/03\/hlavny-banner-1200x628_2022_14-760x398.png 760w, https:\/\/bezpecnenanete.eset.com\/sk\/wp-content\/uploads\/2022\/03\/hlavny-banner-1200x628_2022_14.png 1200w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"has-text-dark-color has-text-color\">O&nbsp;\u0161ifrovan\u00ed komunik\u00e1cie v&nbsp;online priestore sa v&nbsp;poslednej dobe \u010dasto rozpr\u00e1va. \u010co to presne je, ako \u0161ifrovanie funguje a&nbsp;ak\u00e9 d\u00e1ta m\u00e1 zmysel \u0161ifrova\u0165?<\/p>\n\n\n\n<p class=\"has-text-dark-color has-text-color\">\u0160ifrovanie d\u00e1t je proces, po\u010das ktor\u00e9ho sa <strong>d\u00e1ta v&nbsp;\u010ditate\u013enej podobe pomocou nejak\u00e9ho \u0161ifrovacieho k\u013e\u00fa\u010da zmenia na ne\u010ditate\u013en\u00e9. <\/strong>Nikto bez k\u013e\u00fa\u010da \u2013 ani \u010dlovek, ani program \u2013 nie je schopn\u00fd d\u00e1ta pre\u010d\u00edta\u0165.<\/p>\n\n\n\n<hr class=\"wp-block-separator is-style-wide\"\/>\n\n\n\n<p class=\"has-text-align-center has-text-dark-color has-text-color\" style=\"font-size:23px\">Dajte si pozor na falo\u0161n\u00e9 zbierky zneu\u017e\u00edvaj\u00face konflikt na Ukrajine <strong><a href=\"https:\/\/bezpecnenanete.eset.com\/sk\/cybernews\/dajte-si-pozor-na-falosne-zbierky-zneuzivajuce-vojnu-na-ukrajine\/\" target=\"_blank\" rel=\"noreferrer noopener\">Pre\u010d\u00edta\u0165 \u010dl\u00e1nok<\/a><\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator is-style-wide\"\/>\n\n\n\n<p class=\"has-text-dark-color has-text-color\">Cie\u013eom <strong><a href=\"https:\/\/bezpecnenanete.eset.com\/sk\/kyberneticky-slovnik-pojmov\/#S\" target=\"_blank\" rel=\"noreferrer noopener\">\u0161ifrovania<\/a><\/strong> na internete je zamedzenie nepovolen\u00fdm osob\u00e1m \u010d\u00edta\u0165 ak\u00e9ko\u013evek d\u00e1ta alebo komunik\u00e1ciu. Naj\u010dastej\u0161ie sa \u0161ifrovanie spom\u00edna v&nbsp;spojen\u00ed s&nbsp;\u010detovac\u00edmi slu\u017ebami. Za\u0161ifrova\u0165 m\u00f4\u017eete aj r\u00f4zne dokumenty, fotografie alebo \u00falo\u017eisk\u00e1 (napr\u00edklad USB disky),&nbsp;dokonca aj cel\u00e9 po\u010d\u00edta\u010de. Tie sa bez spr\u00e1vneho k\u013e\u00fa\u010da ani nezapn\u00fa.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"ako-sifrovanie-na-internete-funguje\">Ako \u0161ifrovanie na internete funguje?<\/h2>\n\n\n\n<p class=\"has-text-dark-color has-text-color\">Existuj\u00fa dve met\u00f3dy \u0161ifrovania: Client to Server a&nbsp;End to End.<\/p>\n\n\n\n<ul class=\"is-style-checkbox has-text-link-color has-text-color wp-block-list\"><li><strong>Client to Server \u0161ifrovanie<\/strong><\/li><\/ul>\n\n\n\n<p class=\"has-text-dark-color has-text-color\">Ide o&nbsp;jednoduch\u0161iu formu, pri ktorej je <strong>komunik\u00e1cia \u0161ifrovan\u00e1 len \u010diasto\u010dne<\/strong>. \u010co to znamen\u00e1? Spr\u00e1va sa \u0161ifruje len pre server, cez ktor\u00fd prebieha komunik\u00e1cia, ale medzi klientom a&nbsp;serverom sa d\u00e1ta \u0161\u00edria v&nbsp;ne\u0161ifrovanej podobe. V&nbsp;tomto pr\u00edpade sa m\u00f4\u017ee \u00fato\u010dn\u00edk dosta\u0165 do tohto \u201etoku\u201c d\u00e1t, a&nbsp;tak komunik\u00e1ciu <strong><a href=\"https:\/\/bezpecnenanete.eset.com\/sk\/it-bezpecnost\/ste-sledovani-ako-spoznat-sledovaciu-aplikaciu-vo-vasom-telefone\/\" target=\"_blank\" rel=\"noreferrer noopener\">sledova\u0165<\/a><\/strong>, pr\u00edpadne zmeni\u0165.<\/p>\n\n\n\n<ul class=\"is-style-checkbox has-text-link-color has-text-color wp-block-list\"><li><strong>End to End Encryption \u0161ifrovanie<\/strong><\/li><\/ul>\n\n\n\n<p class=\"has-text-dark-color has-text-color\">Toto \u0161ifrovanie pozn\u00e1me aj ako koncov\u00e9 \u0161ifrovanie. <strong>T\u00e1to met\u00f3da \u0161ifruje d\u00e1ta medzi koncov\u00fdmi zariadeniami.<\/strong> Tak\u017ee za\u0161ifruje spr\u00e1vu pou\u017e\u00edvate\u013eov (odosielate\u013e), po\u0161le ju cez server, ktor\u00fd ju v\u0161ak nevie pre\u010d\u00edta\u0165, a&nbsp;pre\u010d\u00edta ju a\u017e pou\u017e\u00edvate\u013e (adres\u00e1t), ktor\u00fd ju n\u00e1sledne roz\u0161ifruje. T\u00fato met\u00f3du by mali pou\u017e\u00edva\u0165 mailov\u00ed klienti, \u010detovacie aplik\u00e1cie, ale i&nbsp;online obchody.<\/p>\n\n\n\n<hr class=\"wp-block-separator is-style-wide\"\/>\n\n\n\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\"><\/div><\/div>\n\n\n\n<hr class=\"wp-block-separator is-style-wide\"\/>\n\n\n\n<h2 class=\"has-text-dark-color has-text-color wp-block-heading\" id=\"ako-poznam-ze-je-komunikacia-sifrovana\">Ako pozn\u00e1m, \u017ee je komunik\u00e1cia \u0161ifrovan\u00e1?<\/h2>\n\n\n\n<p class=\"has-text-dark-color has-text-color\">\u0160ifrovanie by dnes malo by\u0165 \u0161tandardom na v\u0161etk\u00fdch webov\u00fdch str\u00e1nkach. K\u013e\u00fa\u010dov\u00e9 s\u00fa najm\u00e4 str\u00e1nky, do ktor\u00fdch zad\u00e1vate ak\u00e9ko\u013evek <strong><a href=\"https:\/\/bezpecnenanete.eset.com\/sk\/it-bezpecnost\/vasa-digitalna-stopa-co-to-je-a-ako-sa-o-nu-starat\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u00fadaje<\/a><\/strong>. \u0160ifrovan\u00fa komunik\u00e1ciu na internete spozn\u00e1me pod\u013ea ikony z\u00e1mku pred internetovou adresou. Hovor\u00edme o&nbsp;tzv. SSL certifik\u00e1te, ktor\u00fd garantuje kvalitu \u0161ifrovacieho k\u013e\u00fa\u010da. <\/p>\n\n\n\n<p class=\"has-text-dark-color has-text-color\">Ak nav\u0161t\u00edvite str\u00e1nku, ktor\u00e1 nem\u00e1 tento z\u00e1mok, v&nbsp;\u017eiadnom pr\u00edpade<strong> nezad\u00e1vajte na str\u00e1nke va\u0161e osobn\u00e9 \u00fadaje ani cez \u0148u nepla\u0165te platobnou kartou. <\/strong>Nem\u00e1te tu toti\u017e istotu, \u017ee s\u00fa va\u0161e d\u00e1ta zabezpe\u010den\u00e9.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/bezpecnenanete.eset.com\/sk\/wp-content\/uploads\/2022\/03\/ukazka-zamku.jpg\" alt=\"sifrovanie ukazka zamku\" class=\"wp-image-9761\" width=\"563\" height=\"221\" srcset=\"https:\/\/bezpecnenanete.eset.com\/sk\/wp-content\/uploads\/2022\/03\/ukazka-zamku.jpg 750w, https:\/\/bezpecnenanete.eset.com\/sk\/wp-content\/uploads\/2022\/03\/ukazka-zamku-300x118.jpg 300w, https:\/\/bezpecnenanete.eset.com\/sk\/wp-content\/uploads\/2022\/03\/ukazka-zamku-370x146.jpg 370w\" sizes=\"auto, (max-width: 563px) 100vw, 563px\" \/><\/figure><\/div>\n\n\n\n<p class=\"has-text-align-center has-text-dark-color has-text-color has-small-font-size\">Uk\u00e1\u017eka z\u00e1mku <br>zdroj: <a href=\"http:\/\/www.dvojklik.cz\">www.dvojklik.cz<\/a><\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"has-text-dark-color has-text-color\">V&nbsp;pr\u00edpade renomovan\u00fdch e-mailov\u00fdch slu\u017eieb, ako je Outlook, Apple, Thunderbird, Seznam \u010di Google, je <strong><a href=\"https:\/\/bezpecnenanete.eset.com\/sk\/kyberneticky-slovnik-pojmov\/#S\">\u0161ifrovanie<\/a><\/strong> automatick\u00e9. Soci\u00e1lne siete by mali ma\u0165 bez v\u00fdnimky SSL certifik\u00e1t. Niektor\u00e9 slu\u017eby si v\u0161ak s&nbsp;re\u0161pektovan\u00edm s\u00fakromia pou\u017e\u00edvate\u013eov nerobia starosti. Preto si v\u017edy pre\u010d\u00edtajte podmienky pou\u017e\u00edvania danej slu\u017eby.<\/p>\n\n\n\n<hr class=\"wp-block-separator is-style-wide\"\/>\n\n\n\n<p class=\"has-text-align-center has-text-dark-color has-text-color\" style=\"font-size:23px\">Ste sledovan\u00ed? Ako spozna\u0165 sledovaciu aplik\u00e1ciu vo va\u0161om telef\u00f3ne? <strong><a href=\"https:\/\/bezpecnenanete.eset.com\/sk\/it-bezpecnost\/ste-sledovani-ako-spoznat-sledovaciu-aplikaciu-vo-vasom-telefone\/\" target=\"_blank\" rel=\"noreferrer noopener\">Pre\u010d\u00edta\u0165 \u010dl\u00e1nok<\/a><\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator is-style-wide\"\/>\n\n\n\n<p class=\"has-text-dark-color has-text-color\">Ako zisti\u0165, \u010di je komunik\u00e1cia \u0161ifrovania aj v&nbsp;\u010detovacej appke? V&nbsp;komunika\u010dn\u00fdch aplik\u00e1ci\u00e1ch sa nem\u00f4\u017eete riadi\u0165 pod\u013ea ikony z\u00e1mku. Inform\u00e1cie o&nbsp;\u0161ifrovan\u00ed n\u00e1jdete naj\u010dastej\u0161ie v&nbsp;opise aplik\u00e1cie.<strong> Pre v\u00e4\u010d\u0161inu \u010detovac\u00edch aplik\u00e1ci\u00ed je koncov\u00e9 \u0161ifrovanie \u0161tandardom<\/strong>. Touto funkciou disponuje napr\u00edklad WhatsApp, iMessage, Telegram i&nbsp;Messenger. Pri posledn\u00fdch dvoch menovan\u00fdch v\u0161ak mus\u00ed \u0161ifrovanie nastavi\u0165 pou\u017e\u00edvate\u013e.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-coblocks-alert has-text-color has-text-dark-color has-background has-bd-color-background-color\" aria-label=\"Alert section\"><p class=\"wp-block-coblocks-alert__title\"><strong>Dobr\u00e9 vedie\u0165<\/strong><\/p><p class=\"wp-block-coblocks-alert__text\"><strong>End to end \u0161ifrovanie na Messangeri si mus\u00edte nastavi\u0165 pri ka\u017edej komunik\u00e1cii zvl\u00e1\u0161\u0165. Sta\u010d\u00ed klikn\u00fa\u0165 na ikonku \u201ei\u201c v&nbsp;pravom hornom rohu a&nbsp;zvoli\u0165 mo\u017enos\u0165 \u201ePrejs\u0165 na tajn\u00fa komunik\u00e1ciu\u201c.<\/strong><\/p><\/div>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"has-text-dark-color has-text-color\">Ako sme spom\u00ednali, rovnako m\u00f4\u017eete za\u0161ifrova\u0165 aj dokumenty. V&nbsp;tomto pr\u00edpade existuj\u00fa programy, ktor\u00e9 d\u00e1ta za\u0161ifruj\u00fa. Niektor\u00e9 (napr\u00edklad TrueCrypt alebo DiskCryptor) s\u00fa dokonca dostupn\u00e9 aj zadarmo. De\u0161ifrovanie dokumentu sa rob\u00ed zadan\u00edm <strong><a href=\"https:\/\/bezpecnenanete.eset.com\/sk\/it-bezpecnost\/heslo\/\">hesla<\/a><\/strong>, ktor\u00e9 si pred za\u0161ifrovan\u00edm zvol\u00edte. Pokia\u013e za\u0161ifrovan\u00fd text s&nbsp;niek\u00fdm zdie\u013eate, heslo mu posielajte zvl\u00e1\u0161\u0165. Napr\u00edklad mu ho povedzte osobne alebo cez SMS.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"na-zaver\">Na z\u00e1ver<\/h2>\n\n\n\n<p class=\"has-text-dark-color has-text-color\">Bezpe\u010dnos\u0165 va\u0161ej \u0161ifry kon\u010d\u00ed vo va\u0161om zariaden\u00ed. Ak bude va\u0161e zariadenie infikovan\u00e9 napr\u00edklad spyv\u00e9rom, tak ani najdokonalej\u0161ie \u0161ifrovanie neochr\u00e1ni d\u00e1ta. Preto nepodce\u0148ujte ani be\u017en\u00fa dostupn\u00fa prevenciu pomocou <strong><a href=\"https:\/\/bezpecnenanete.eset.com\/sk\/bezpecnostne-riesenia\/\" target=\"_blank\" rel=\"noreferrer noopener\">bezpe\u010dnostn\u00e9ho softv\u00e9ru<\/a><\/strong> a&nbsp;dodr\u017eujte z\u00e1sady bezpe\u010dn\u00e9ho pou\u017e\u00edvania po\u010d\u00edta\u010da a&nbsp;v\u00e1\u0161ho mobilu.<\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p class=\"has-text-dark-color has-text-color\">Autor: t\u00edm Bezpe\u010dne na nete<br>Zdroj: Dvojklik.cz &#8211; <a href=\"https:\/\/www.dvojklik.cz\/k-cemu-je-sifrovani-a-sifrovana-komunikace-na-internetu\/\" target=\"_blank\" rel=\"noreferrer noopener\">K \u010demu je \u0161ifrov\u00e1n\u00ed a \u0161ifrovan\u00e1 komunikace na internetu?<\/a><\/p>\n\n\n\n<div class=\"subscribers-form blue\"><h3>Chr\u00e1\u0148te sa na internete! \ud83d\ude80 Z\u00edskajte u\u017eito\u010dn\u00e9 tipy priamo do schr\u00e1nky. Prihl\u00e1ste sa na odber n\u00e1\u0161ho newslettra.<\/h3><div class=\"emaillist\" id=\"es_form_f1-n1\"><form action=\"\/sk\/wp-json\/wp\/v2\/posts\/9627#es_form_f1-n1\" method=\"post\" class=\"es_subscription_form es_shortcode_form  es_ajax_subscription_form\" id=\"es_subscription_form_6a08c12061660\" data-source=\"ig-es\" data-form-id=\"1\"><div class=\"es-field-wrap ig-es-form-field\"><label class=\"es-field-label\"><input class=\"es_required_field es_txt_email ig_es_form_field_email ig-es-form-input\" type=\"email\" name=\"esfpx_email\" value=\"\" placeholder=\"Zadajte svoj email\" required=\"required\" \/><\/label><\/div><input type=\"hidden\" name=\"esfpx_lists[]\" value=\"d6e737d02770\" \/><input type=\"hidden\" name=\"esfpx_lists[]\" value=\"7ee3790c5565\" \/><input type=\"hidden\" name=\"esfpx_form_id\" value=\"1\" \/><input type=\"hidden\" name=\"es\" value=\"subscribe\" \/>\n\t\t\t<input type=\"hidden\" name=\"esfpx_es_form_identifier\" value=\"f1-n1\" \/>\n\t\t\t<input type=\"hidden\" name=\"esfpx_es_email_page\" value=\"9627\" \/>\n\t\t\t<input type=\"hidden\" name=\"esfpx_es_email_page_url\" value=\"https:\/\/bezpecnenanete.eset.com\/sk\/cybernews\/na-co-je-sifrovanie-a-sifrovana-komunikacia-na-internete\/\" \/>\n\t\t\t<input type=\"hidden\" name=\"esfpx_status\" value=\"Unconfirmed\" \/>\n\t\t\t<input type=\"hidden\" name=\"esfpx_es-subscribe\" id=\"es-subscribe-6a08c12061660\" value=\"5bb088e33c\" \/>\n\t\t\t<label style=\"position:absolute;top:-99999px;left:-99999px;z-index:-99;\" aria-hidden=\"true\"><span hidden>Please leave this field empty.<\/span><input type=\"email\" name=\"esfpx_es_hp_email\" class=\"es_required_field\" tabindex=\"-1\" autocomplete=\"-1\" value=\"\" \/><\/label><small class=\"eset-recaptcha-branding\" style=\"display:block;margin-top:8px;margin-bottom:12px;font-size:11px;line-height:1.4;\">T\u00fato str\u00e1nku chr\u00e1ni reCAPTCHA, platia <a href=\"https:\/\/policies.google.com\/privacy\" target=\"_blank\" rel=\"noopener\">Pravidl\u00e1 ochrany s\u00fakromia<\/a> a <a href=\"https:\/\/policies.google.com\/terms\" target=\"_blank\" rel=\"noopener\">Zmluvn\u00e9 podmienky<\/a> spolo\u010dnosti Google.<\/small><label style=\"display: inline\"><input type=\"checkbox\" name=\"es_gdpr_consent\" value=\"true\" required=\"required\" \/>&nbsp;S\u00fahlas\u00edm s prihl\u00e1sen\u00edm na odber newslettera a \u010fal\u0161\u00edch marketingov\u00fdch materi\u00e1lov prostredn\u00edctvom emailu. Viac inform\u00e1ci\u00ed o sprac\u00favan\u00ed osobn\u00fdch \u00fadajov je k dispoz\u00edcii na str\u00e1nke venovanej  <a href=\"https:\/\/www.eset.com\/sk\/ochrana-sukromia\/\" target=\"_blank\">Ochrane s\u00fakromia<\/a>.<\/label><br \/><input type=\"submit\" name=\"submit\" class=\"es_subscription_form_submit es_submit_button es_textbox_button\" id=\"es_subscription_form_submit_6a08c12061660\" value=\"Odosla\u0165\" \/><span class=\"es_spinner_image\" id=\"spinner-image\"><img decoding=\"async\" src=\"https:\/\/bezpecnenanete.eset.com\/sk\/wp-content\/plugins\/email-subscribers-premium\/lite\/public\/images\/spinner.gif\" alt=\"Loading\" \/><\/span><\/form><span class=\"es_subscription_message \" id=\"es_subscription_message_6a08c12061660\" role=\"alert\" aria-live=\"assertive\"><\/span><\/div><\/div>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u010co to presne je, ako \u0161ifrovanie funguje a ak\u00e9 d\u00e1ta m\u00e1 zmysel \u0161ifrova\u0165?<\/p>\n","protected":false},"author":5,"featured_media":9629,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","footnotes":""},"categories":[168,165],"tags":[],"class_list":["post-9627","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ako-na-to","category-cybernews"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Ako funguje \u0161ifrovanie na internete? | ESET<\/title>\n<meta name=\"description\" content=\"O \u0161ifrovan\u00ed komunik\u00e1cie v online priestore sa \u010dasto rozpr\u00e1va. \u010co je \u0161ifrovanie a ak\u00e9 d\u00e1ta m\u00e1 zmysel \u0161ifrova\u0165?\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, 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