{"id":3916,"date":"2026-11-03T09:30:00","date_gmt":"2026-11-03T09:30:00","guid":{"rendered":"https:\/\/potenting.com\/cs\/blog\/how-ssl-tls-certificates-protect-your-website\/"},"modified":"2026-11-03T11:52:20","modified_gmt":"2026-11-03T11:52:20","slug":"how-ssl-tls-certificates-protect-your-website-cs","status":"publish","type":"post","link":"https:\/\/potenting.com\/cs\/blog\/how-ssl-tls-certificates-protect-your-website\/","title":{"rendered":"Jak certifik\u00e1ty SSL\/TLS chr\u00e1n\u00ed v\u00e1\u0161 web?"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"3916\" class=\"elementor elementor-3916\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5ae7d9e e-flex e-con-boxed e-con e-parent\" data-id=\"5ae7d9e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0e4aa40 elementor-toc--minimized-on-tablet elementor-widget elementor-widget-table-of-contents\" data-id=\"0e4aa40\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;exclude_headings_by_selector&quot;:[],&quot;no_headings_message&quot;:&quot;Na t\\u00e9to str\\u00e1nce nebyly nalezeny \\u017e\\u00e1dn\\u00e9 nadpisy.&quot;,&quot;headings_by_tags&quot;:[&quot;h2&quot;,&quot;h3&quot;,&quot;h4&quot;,&quot;h5&quot;,&quot;h6&quot;],&quot;marker_view&quot;:&quot;numbers&quot;,&quot;minimize_box&quot;:&quot;yes&quot;,&quot;minimized_on&quot;:&quot;tablet&quot;,&quot;hierarchical_view&quot;:&quot;yes&quot;,&quot;min_height&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"table-of-contents.default\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__header\">\n\t\t\t\t\t\t<div class=\"elementor-toc__header-title\">\n\t\t\t\tObsah\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--expand\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__0e4aa40\" aria-expanded=\"true\" aria-label=\"Open table of contents\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-down\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/div>\n\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--collapse\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__0e4aa40\" aria-expanded=\"true\" aria-label=\"Close table of contents\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-up\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<div id=\"elementor-toc__0e4aa40\" class=\"elementor-toc__body\">\n\t\t\t<div class=\"elementor-toc__spinner-container\">\n\t\t\t\t<svg class=\"elementor-toc__spinner eicon-animation-spin e-font-icon-svg e-eicon-loading\" aria-hidden=\"true\" viewBox=\"0 0 1000 1000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M500 975V858C696 858 858 696 858 500S696 142 500 142 142 304 142 500H25C25 237 238 25 500 25S975 237 975 500 763 975 500 975Z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-991bcac e-flex e-con-boxed e-con e-parent\" data-id=\"991bcac\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-92189de elementor-widget elementor-widget-text-editor\" data-id=\"92189de\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>U\u017eivatel\u00e9 internetu dnes kladou na bezpe\u010dnost velk\u00fd d\u016fraz. Pokud zjist\u00ed, \u017ee by web nebo aplikace mohly ohrozit jejich bezpe\u010dnost, pravd\u011bpodobn\u011b je pou\u017e\u00edvat nebudou. Protokoly SSL a TLS byly vyvinuty proto, aby zv\u00fd\u0161ily bezpe\u010dnost \u0161ifrov\u00e1n\u00edm dat a pomohly chr\u00e1nit informace u\u017eivatel\u016f.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-3d33b1a e-flex e-con-boxed e-con e-parent\" data-id=\"3d33b1a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b1afc24 elementor-widget elementor-widget-text-editor\" data-id=\"b1afc24\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>Co je SSL (Secure Sockets Layer)?<\/h2><p>V roce 1990 byl vyvinut protokol, kter\u00fd m\u011bl zlep\u0161it bezpe\u010dnost internetu \u0161ifrov\u00e1n\u00edm dat a sn\u00ed\u017eit riziko, \u017ee k nim z\u00edskaj\u00ed p\u0159\u00edstup neopr\u00e1vn\u011bn\u00e9 osoby. P\u0159ed zaveden\u00edm SSL byla komunikace mezi webov\u00fdmi servery a prohl\u00ed\u017ee\u010di vystavena r\u016fzn\u00fdm bezpe\u010dnostn\u00edm hrozb\u00e1m. Po zaveden\u00ed tohoto protokolu se jeho pou\u017e\u00edv\u00e1n\u00ed postupn\u011b stalo bezpe\u010dnostn\u00edm standardem a mnoho firem jej p\u0159ijalo, aby chr\u00e1nilo soukrom\u00ed sv\u00fdch u\u017eivatel\u016f.<\/p><p>P\u0159esto\u017ee SSL zpo\u010d\u00e1tku vypadal jako \u00fa\u010dinn\u00e9 \u0159e\u0161en\u00ed, m\u011bl \u0159adu nedostatk\u016f a omezen\u00ed, kv\u016fli kter\u00fdm nemohl b\u00fdt pova\u017eov\u00e1n za pln\u011b spolehliv\u00fd protokol.<\/p><p>Nap\u0159\u00edklad v roce 2014 byla v SSL 3.0 objevena z\u00e1va\u017en\u00e1 zranitelnost, kter\u00e1 mohla hacker\u016fm umo\u017enit neopr\u00e1vn\u011bn\u00fd p\u0159\u00edstup. V\u00fdvoj\u00e1\u0159i proto za\u010dali hledat bezpe\u010dn\u011bj\u0161\u00ed a spolehliv\u011bj\u0161\u00ed alternativu.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-efe6d95 e-flex e-con-boxed e-con e-parent\" data-id=\"efe6d95\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e987aa1 elementor-widget elementor-widget-text-editor\" data-id=\"e987aa1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>Co je Transport Layer Security (TLS)?<\/h2><p>TLS byl vyvinut, aby odstranil nedostatky SSL a nahradil jej. Tento protokol, p\u0159edstaven\u00fd v roce 1999, nab\u00eddl lep\u0161\u00ed v\u00fdkon a bezpe\u010dn\u011bj\u0161\u00ed spojen\u00ed a nakonec se stal pr\u016fmyslov\u00fdm standardem. TLS slou\u017e\u00ed ke stejn\u00e9mu \u00fa\u010delu jako SSL: zabezpe\u010den\u00ed komunikace mezi webov\u00fdmi prohl\u00ed\u017ee\u010di a servery. Proto\u017ee v\u0161ak poskytuje mnohem vy\u0161\u0161\u00ed \u00farove\u0148 zabezpe\u010den\u00ed, m\u016f\u017ee pou\u017e\u00edv\u00e1n\u00ed zastaral\u00fdch nebo nezabezpe\u010den\u00fdch protokol\u016f m\u00edsto TLS vystavit syst\u00e9my bezpe\u010dnostn\u00edm rizik\u016fm.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-815ce49 e-flex e-con-boxed e-con e-parent\" data-id=\"815ce49\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a09bb9a elementor-widget elementor-widget-text-editor\" data-id=\"a09bb9a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>Srovn\u00e1n\u00ed SSL a TLS<\/h2><p>SSL a TLS slou\u017e\u00ed ke stejn\u00e9mu \u00fa\u010delu: zabezpe\u010den\u00ed komunikace p\u0159es internet. Li\u0161\u00ed se v\u0161ak zp\u016fsobem fungov\u00e1n\u00ed a \u00farovn\u00ed zabezpe\u010den\u00ed, kterou poskytuj\u00ed.<\/p><ul><li><h3>Hlavn\u00ed rozd\u00edly mezi SSL a TLS<\/h3><ul><li><span style=\"color: #cb5c48;\">\u0160ifrov\u00e1n\u00ed:<\/span> TLS vyu\u017e\u00edv\u00e1 siln\u011bj\u0161\u00ed a pokro\u010dilej\u0161\u00ed \u0161ifrovac\u00ed algoritmy a techniky. Podporuje AES pro \u0161ifrov\u00e1n\u00ed dat a HMAC pro zaji\u0161t\u011bn\u00ed integrity zpr\u00e1v, d\u00edky \u010demu\u017e je bezpe\u010dn\u011bj\u0161\u00ed ne\u017e jeho p\u0159edch\u016fdce SSL.<\/li><li><span style=\"color: #cb5c48;\">Siln\u011bj\u0161\u00ed ov\u011b\u0159ov\u00e1n\u00ed:<\/span> TLS pou\u017e\u00edv\u00e1 pokro\u010dilej\u0161\u00ed metody ov\u011b\u0159ov\u00e1n\u00ed identity komunikuj\u00edc\u00edch stran, \u010d\u00edm\u017e sni\u017euje riziko \u00fatok\u016f typu man-in-the-middle (MITM). Jeho proces handshake nav\u00edc zahrnuje bezpe\u010dn\u011bj\u0161\u00ed autentiza\u010dn\u00ed mechanismy.<\/li><li><span style=\"color: #cb5c48;\">Lep\u0161\u00ed v\u00fdkon a rychlost:<\/span> TLS optimalizuje proces navazov\u00e1n\u00ed zabezpe\u010den\u00fdch spojen\u00ed a sni\u017euje komunika\u010dn\u00ed re\u017eii. D\u00edky tomu m\u016f\u017ee b\u00fdt handshake rychlej\u0161\u00ed a latence spojen\u00ed ni\u017e\u0161\u00ed, tak\u017ee je TLS vhodn\u011bj\u0161\u00ed pro modern\u00ed webov\u00e9 aplikace.<\/li><\/ul><\/li><li><h3>Podobnosti mezi SSL a TLS<\/h3><ul><li><span style=\"color: #cb5c48;\">\u0160ifrov\u00e1n\u00ed dat:<\/span> Oba protokoly jsou navr\u017eeny k \u0161ifrov\u00e1n\u00ed dat a navazov\u00e1n\u00ed zabezpe\u010den\u00fdch spojen\u00ed mezi webov\u00fdmi prohl\u00ed\u017ee\u010di a servery. TLS je nov\u011bj\u0161\u00ed protokol, vyvinut\u00fd k odstran\u011bn\u00ed bezpe\u010dnostn\u00edch slabin SSL.<\/li><li><span style=\"color: #cb5c48;\">Terminologie:<\/span> P\u0159esto\u017ee je SSL zastaral\u00fd, tento pojem se st\u00e1le b\u011b\u017en\u011b pou\u017e\u00edv\u00e1 pro ozna\u010den\u00ed spojen\u00ed a certifik\u00e1t\u016f TLS.<\/li><li><span style=\"color: #cb5c48;\">\u00da\u010del:<\/span> Oba protokoly maj\u00ed za c\u00edl chr\u00e1nit data b\u011bhem jejich p\u0159enosu po s\u00edti. Vyu\u017e\u00edvaj\u00ed bezpe\u010dnostn\u00ed mechanismy k podpo\u0159e ov\u011b\u0159ov\u00e1n\u00ed a navazov\u00e1n\u00ed \u0161ifrovan\u00fdch spojen\u00ed.<\/li><li><span style=\"color: #cb5c48;\">Vyu\u017eit\u00ed v HTTPS:<\/span> HTTPS pou\u017e\u00edv\u00e1 TLS k zabezpe\u010den\u00ed komunikace mezi prohl\u00ed\u017ee\u010dem a webov\u00fdm serverem. P\u0159\u00edtomnost `https:\/\/` v adresn\u00edm \u0159\u00e1dku znamen\u00e1, \u017ee web pou\u017e\u00edv\u00e1 \u0161ifrovan\u00e9 spojen\u00ed.<\/li><\/ul><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-05808d6 e-flex e-con-boxed e-con e-parent\" data-id=\"05808d6\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-cbb72bf elementor-widget elementor-widget-html\" data-id=\"cbb72bf\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t\n<style>\n  .ssl-table-wrapper {\n    width: 100%;\n    overflow-x: auto;\n    margin: 25px 0;\n    border-radius: 10px;\n    border: 1px solid #E8D8D4;\n  }\n\n  .ssl-comparison-table {\n    width: 100%;\n    min-width: 550px;\n    border-collapse: collapse;\n    text-align: left;\n    font-size: 15px;\n    line-height: 1.7;\n    background-color: #FFFFFF;\n  }\n\n  .ssl-comparison-table thead {\n    background-color: #CB5C48;\n    color: #FFFFFF;\n  }\n\n  .ssl-comparison-table th {\n    padding: 15px;\n    font-weight: 600;\n    text-align: left;\n  }\n\n  .ssl-comparison-table td {\n    padding: 13px 15px;\n    border-bottom: 1px solid #F0E4E1;\n    color: #444444;\n  }\n\n  .ssl-comparison-table tbody tr:nth-child(even) {\n    background-color: #FFF5F2;\n  }\n\n  .ssl-comparison-table tbody tr:hover {\n    background-color: #FBE8E3;\n  }\n\n  .ssl-comparison-table tbody tr:last-child td {\n    border-bottom: none;\n  }\n\n  @media (max-width: 600px) {\n    .ssl-comparison-table {\n      font-size: 14px;\n    }\n\n    .ssl-comparison-table th,\n    .ssl-comparison-table td {\n      padding: 10px;\n    }\n  }\n<\/style>\n\n<div class=\"ssl-table-wrapper\">\n  <table class=\"ssl-comparison-table\">\n    <thead>\n      <tr>\n        <th>Comparison Criteria<\/th>\n        <th>SSL<\/th>\n        <th>TLS<\/th>\n      <\/tr>\n    <\/thead>\n    <tbody>\n      <tr>\n        <td>Security Status<\/td>\n        <td>Deprecated and insecure<\/td>\n        <td>Modern and more secure standard<\/td>\n      <\/tr>\n      <tr>\n        <td>Encryption Algorithms<\/td>\n        <td>Uses outdated and weak algorithms<\/td>\n        <td>Supports modern encryption algorithms<\/td>\n      <\/tr>\n      <tr>\n        <td>Authentication<\/td>\n        <td>Uses older mechanisms<\/td>\n        <td>Uses improved authentication mechanisms<\/td>\n      <\/tr>\n      <tr>\n        <td>Performance and Speed<\/td>\n        <td>Has security and technical limitations<\/td>\n        <td>Optimized for modern communications<\/td>\n      <\/tr>\n      <tr>\n        <td>Handshake Process<\/td>\n        <td>Older process with security weaknesses<\/td>\n        <td>Improved and more efficient process<\/td>\n      <\/tr>\n      <tr>\n        <td>Resistance to Attacks<\/td>\n        <td>Vulnerable to various attacks<\/td>\n        <td>Provides stronger protection against known attacks<\/td>\n      <\/tr>\n      <tr>\n        <td>Use in HTTPS<\/td>\n        <td>Should no longer be used<\/td>\n        <td>Used to secure HTTPS communications<\/td>\n      <\/tr>\n      <tr>\n        <td>Browser Support<\/td>\n        <td>Older SSL versions are no longer supported<\/td>\n        <td>Modern TLS versions are supported<\/td>\n      <\/tr>\n    <\/tbody>\n  <\/table>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-996da9b e-flex e-con-boxed e-con e-parent\" data-id=\"996da9b\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8765338 elementor-widget elementor-widget-text-editor\" data-id=\"8765338\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>Pro\u010d byl SSL ozna\u010den za zastaral\u00fd?<\/h2><p>Ukon\u010den\u00ed podpory SSL bylo nezbytn\u00fdm bezpe\u010dnostn\u00edm opat\u0159en\u00edm. Pou\u017e\u00edv\u00e1n\u00ed slab\u00fdch \u0161ifrovac\u00edch algoritm\u016f, zranitelnost v\u016f\u010di r\u016fzn\u00fdm \u00fatok\u016fm, jako jsou \u00fatoky typu man-in-the-middle (MITM), a neschopnost splnit modern\u00ed bezpe\u010dnostn\u00ed po\u017eadavky u\u010dinily z tohoto protokolu zastaral\u00e9 a nespolehliv\u00e9 \u0159e\u0161en\u00ed.<\/p><p>Modern\u00ed webov\u00e9 prohl\u00ed\u017ee\u010de nav\u00edc star\u0161\u00ed verze SSL ji\u017e nepodporuj\u00ed. P\u0159i n\u00e1v\u0161t\u011bv\u011b web\u016f, kter\u00e9 na t\u011bchto zastaral\u00fdch protokolech z\u00e1visej\u00ed, mohou u\u017eivatel\u016fm zobrazovat bezpe\u010dnostn\u00ed varov\u00e1n\u00ed.<\/p><h3>Pro\u010d se pojem SSL st\u00e1le pou\u017e\u00edv\u00e1?<\/h3><p>P\u0159esto\u017ee je SSL zastaral\u00fd, tento pojem se v souvislosti se \u0161ifrovac\u00edmi protokoly st\u00e1le hojn\u011b pou\u017e\u00edv\u00e1. I kdy\u017e se standardem pro zabezpe\u010den\u00ed online komunikace stal TLS, mnoho lid\u00ed mu ze zvyku nad\u00e1le \u0159\u00edk\u00e1 SSL.<\/p><p>Je v\u0161ak d\u016fle\u017eit\u00e9 si uv\u011bdomit, \u017ee samotn\u00fd SSL je zastaral\u00fd a ji\u017e nen\u00ed podporov\u00e1n. Kdy\u017e dnes sly\u0161\u00edte pojem \u201ecertifik\u00e1t SSL\u201c, obvykle se t\u00edm mysl\u00ed certifik\u00e1t pou\u017e\u00edvan\u00fd s TLS, p\u0159esto\u017ee se n\u00e1zev SSL st\u00e1le b\u011b\u017en\u011b pou\u017e\u00edv\u00e1.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-e98ec50 e-flex e-con-boxed e-con e-parent\" data-id=\"e98ec50\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-45df1e5 elementor-widget elementor-widget-text-editor\" data-id=\"45df1e5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>Jak\u00e1 je budoucnost certifik\u00e1t\u016f TLS?<\/h2><p>V budoucnu bude TLS zvy\u0161ovat bezpe\u010dnost komunikace aktualizac\u00ed kryptografick\u00fdch algoritm\u016f a zav\u00e1d\u011bn\u00edm metod odoln\u00fdch v\u016f\u010di kvantov\u00fdm po\u010d\u00edta\u010d\u016fm. Na druhou stranu zkr\u00e1cen\u00ed doby platnosti certifik\u00e1t\u016f na 47 dn\u00ed sice zv\u00fd\u0161\u00ed bezpe\u010dnost, ale z\u00e1rove\u0148 zt\u00ed\u017e\u00ed spr\u00e1vu certifik\u00e1t\u016f a jejich v\u010dasnou obnovu.<\/p><p>Automatizovan\u00e9 n\u00e1stroje a protokoly, jako je ACME, proto budou st\u00e1le d\u016fle\u017eit\u011bj\u0161\u00ed pro spr\u00e1vu certifik\u00e1t\u016f, p\u0159edch\u00e1zen\u00ed vypr\u0161en\u00ed jejich platnosti a zamezen\u00ed v\u00fdpadk\u016fm slu\u017eeb.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-dfaf07e e-flex e-con-boxed e-con e-parent\" data-id=\"dfaf07e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ec58a72 elementor-widget elementor-widget-text-editor\" data-id=\"ec58a72\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>M\u011bli byste pou\u017e\u00edvat certifik\u00e1t TLS?<\/h2><p>Ano, rozhodn\u011b. Pokud chcete rozv\u00edjet sv\u00e9 podnik\u00e1n\u00ed a budovat d\u016fv\u011bru u sv\u00fdch u\u017eivatel\u016f, je pou\u017e\u00edv\u00e1n\u00ed TLS nezbytn\u00e9.<\/p><p>P\u0159esto\u017ee n\u011bkter\u00e9 weby st\u00e1le funguj\u00ed bez \u0161ifrovac\u00edch protokol\u016f, prohl\u00ed\u017ee\u010de jako Google Chrome p\u0159i jejich n\u00e1v\u0161t\u011bv\u011b zobrazuj\u00ed u\u017eivatel\u016fm bezpe\u010dnostn\u00ed varov\u00e1n\u00ed. U\u017eivatel\u00e9 jim proto mohou m\u00e9n\u011b d\u016fv\u011b\u0159ovat nebo je p\u0159estat pou\u017e\u00edvat, co\u017e m\u016f\u017ee negativn\u011b ovlivnit pov\u011bst i celkovou v\u00fdkonnost webu.<\/p><p>Chcete-li z\u016fstat konkurenceschopn\u00ed a usp\u011bt v online sv\u011bt\u011b, v\u00e1\u0161 web pot\u0159ebuje certifik\u00e1t TLS, kter\u00fd zabezpe\u010d\u00ed komunikaci a vybuduje d\u016fv\u011bru u u\u017eivatel\u016f.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-e22fdb9 e-flex e-con-boxed e-con e-parent\" data-id=\"e22fdb9\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f2d6651 elementor-widget elementor-widget-html\" data-id=\"f2d6651\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t\n<div class=\"potenting-ssl-cta\">\n  <div class=\"potenting-ssl-cta__top\">\n    <span class=\"potenting-ssl-cta__icon\" aria-hidden=\"true\">\n      &#128274;\n    <\/span>\n    <span class=\"potenting-ssl-cta__label\">\n      WEBSITE SECURITY \u00b7 SSL\/TLS\n    <\/span>\n  <\/div>\n\n  <h3>Secure Your Website. Build Trust.<\/h3>\n\n  <p>\n    Protect your website and your visitors with the right\n    SSL certificate. Explore trusted solutions for encrypted\n    connections, stronger security, and greater customer confidence.\n  <\/p>\n\n  <a\n    class=\"potenting-ssl-cta__button\"\n    href=\"\/cs\/webhosting\/ssl\/\"\n    target=\"_blank\"\n    rel=\"noopener noreferrer\"\n  >\n    Explore SSL Certificates\n    \n  <\/a>\n\n  <div class=\"potenting-ssl-cta__accent\"><\/div>\n<\/div>\n\n<style>\n.potenting-ssl-cta {\n  --cta-coral: #CB5C48;\n  --cta-navy: #101D32;\n  --cta-teal: #77D8C7;\n\n  position: relative;\n  overflow: hidden;\n  box-sizing: border-box;\n  margin: 32px 0;\n  padding: 30px;\n  border: 1px solid rgba(203, 92, 72, 0.25);\n  border-radius: 18px;\n  background:\n    radial-gradient(\n      circle at 100% 0%,\n      rgba(119, 216, 199, 0.14),\n      transparent 36%\n    ),\n    linear-gradient(135deg, #101D32 0%, #1C3048 100%);\n  color: #F7FAFC;\n  font-family: inherit;\n  box-shadow: 0 12px 30px rgba(16, 29, 50, 0.12);\n}\n\n.potenting-ssl-cta__top {\n  display: flex;\n  align-items: center;\n  gap: 12px;\n  margin-bottom: 18px;\n}\n\n.potenting-ssl-cta__icon {\n  display: grid;\n  place-items: center;\n  flex: 0 0 46px;\n  width: 46px;\n  height: 46px;\n  border-radius: 13px;\n  background: var(--cta-coral);\n  font-size: 23px;\n}\n\n.potenting-ssl-cta__label {\n  color: var(--cta-teal);\n  font-size: 11px;\n  font-weight: 700;\n  letter-spacing: 1.5px;\n}\n\n.potenting-ssl-cta h3 {\n  margin: 0 0 12px;\n  color: #FFFFFF;\n  font-size: clamp(22px, 3vw, 30px);\n  line-height: 1.3;\n  font-weight: 750;\n}\n\n.potenting-ssl-cta p {\n  max-width: 650px;\n  margin: 0 0 24px;\n  color: #D5DFE9;\n  font-size: 15px;\n  line-height: 1.9;\n}\n\n.potenting-ssl-cta__button {\n  display: inline-flex;\n  align-items: center;\n  justify-content: center;\n  gap: 12px;\n  box-sizing: border-box;\n  max-width: 100%;\n  padding: 13px 20px;\n  border: 1px solid var(--cta-coral);\n  border-radius: 10px;\n  background: var(--cta-coral);\n  color: #FFFFFF !important;\n  font-size: 14px;\n  font-weight: 700;\n  line-height: 1.5;\n  text-decoration: none !important;\n  transition:\n    background 0.2s ease,\n    border-color 0.2s ease,\n    transform 0.2s ease;\n}\n\n.potenting-ssl-cta__button:hover {\n  background: #AD4938;\n  border-color: #AD4938;\n  color: #FFFFFF !important;\n  transform: translateY(-2px);\n}\n\n.potenting-ssl-cta__accent {\n  position: absolute;\n  right: 0;\n  bottom: 0;\n  left: 0;\n  height: 5px;\n  background: linear-gradient(\n    90deg,\n    #CB5C48 0%,\n    #E99A69 48%,\n    #77D8C7 100%\n  );\n}\n\n@media (max-width: 600px) {\n  .potenting-ssl-cta {\n    padding: 22px 18px;\n    border-radius: 14px;\n  }\n\n  .potenting-ssl-cta__label {\n    font-size: 10px;\n    letter-spacing: 1px;\n  }\n\n  .potenting-ssl-cta__button {\n    display: flex;\n    width: 100%;\n  }\n}\n\n@media (prefers-reduced-motion: reduce) {\n  .potenting-ssl-cta__button {\n    transition: none;\n  }\n}\n<\/style>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-662ce8d e-flex e-con-boxed e-con e-parent\" data-id=\"662ce8d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-afbf846 elementor-widget elementor-widget-text-editor\" data-id=\"afbf846\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>Z\u00e1v\u011br: Jak dlouho je certifik\u00e1t SSL platn\u00fd?<\/h2><p>Doba platnosti certifik\u00e1tu SSL\/TLS ozna\u010duje dobu, po kterou certifik\u00e1t z\u016fst\u00e1v\u00e1 platn\u00fd pro zabezpe\u010den\u00ed komunikace. V sou\u010dasnosti \u010din\u00ed maxim\u00e1ln\u00ed doba platnosti 398 dn\u00ed. Od b\u0159ezna 2026 se v\u0161ak tato doba bude postupn\u011b zkracovat, a\u017e v b\u0159eznu 2029 dos\u00e1hne 47 dn\u00ed.<\/p><p>C\u00edlem t\u00e9to zm\u011bny je zv\u00fd\u0161it bezpe\u010dnost, sn\u00ed\u017eit riziko vyzrazen\u00ed kryptografick\u00fdch kl\u00ed\u010d\u016f a zkr\u00e1tit \u010dasov\u00e9 okno, b\u011bhem kter\u00e9ho mohou \u00fato\u010dn\u00edci zneu\u017e\u00edt kompromitovan\u00e9 nebo zraniteln\u00e9 certifik\u00e1ty.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-48691b6 e-flex e-con-boxed e-con e-parent\" data-id=\"48691b6\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-9233832 e-con-full e-flex e-con e-child\" data-id=\"9233832\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-942ddd8 elementor-view-default elementor-widget elementor-widget-icon\" data-id=\"942ddd8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-wrapper\">\n\t\t\t<div class=\"elementor-icon\">\n\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-far-question-circle\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119.043 8 8 119.083 8 256c0 136.997 111.043 248 248 248s248-111.003 248-248C504 119.083 392.957 8 256 8zm0 448c-110.532 0-200-89.431-200-200 0-110.495 89.472-200 200-200 110.491 0 200 89.471 200 200 0 110.53-89.431 200-200 200zm107.244-255.2c0 67.052-72.421 68.084-72.421 92.863V300c0 6.627-5.373 12-12 12h-45.647c-6.627 0-12-5.373-12-12v-8.659c0-35.745 27.1-50.034 47.579-61.516 17.561-9.845 28.324-16.541 28.324-29.579 0-17.246-21.999-28.693-39.784-28.693-23.189 0-33.894 10.977-48.942 29.969-4.057 5.12-11.46 6.071-16.666 2.124l-27.824-21.098c-5.107-3.872-6.251-11.066-2.644-16.363C184.846 131.491 214.94 112 261.794 112c49.071 0 101.45 38.304 101.45 88.8zM298 368c0 23.159-18.841 42-42 42s-42-18.841-42-42 18.841-42 42-42 42 18.841 42 42z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-6b1e225 e-con-full e-flex e-con e-child\" data-id=\"6b1e225\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-178079e elementor-widget elementor-widget-text-editor\" data-id=\"178079e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>\u010cast\u00e9 dotazy<\/h2>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d43cb7b elementor-widget elementor-widget-text-editor\" data-id=\"d43cb7b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h3>1. Co se stane, kdy\u017e vypr\u0161\u00ed platnost certifik\u00e1tu SSL\/TLS?<\/h3><p style=\"padding-left: 40px;\">N\u00e1v\u0161t\u011bvn\u00edci mohou vid\u011bt bezpe\u010dnostn\u00ed varov\u00e1n\u00ed a prohl\u00ed\u017ee\u010de ji\u017e nemus\u00ed pova\u017eovat spojen\u00ed za zabezpe\u010den\u00e9, co\u017e m\u016f\u017ee ovlivnit d\u016fv\u011bru u\u017eivatel\u016f i dostupnost webu.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ace4fb5 elementor-widget elementor-widget-text-editor\" data-id=\"ace4fb5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h3>2. Pro\u010d se doba platnosti certifik\u00e1t\u016f SSL\/TLS zkracuje?<\/h3><p style=\"padding-left: 40px;\">Krat\u0161\u00ed doba platnosti pom\u00e1h\u00e1 omezit dobu, po kterou mohou kompromitovan\u00e9 nebo zneu\u017eit\u00e9 certifik\u00e1ty z\u016fstat platn\u00e9, a podporuje \u010dast\u011bj\u0161\u00ed aktualizaci certifik\u00e1t\u016f.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-464bee4 elementor-widget elementor-widget-text-editor\" data-id=\"464bee4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h3>3. Zlep\u0161uje certifik\u00e1t SSL\/TLS SEO?<\/h3><p style=\"padding-left: 40px;\">HTTPS je pro Google slab\u00fd hodnotic\u00ed sign\u00e1l. Samotn\u00fd certifik\u00e1t SSL\/TLS v\u0161ak vy\u0161\u0161\u00ed pozice ve v\u00fdsledc\u00edch vyhled\u00e1v\u00e1n\u00ed nezaru\u010duje.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>U\u017eivatel\u00e9 internetu dnes kladou na bezpe\u010dnost velk\u00fd d\u016fraz. Pokud zjist\u00ed, \u017ee by web nebo aplikace mohly ohrozit jejich bezpe\u010dnost, pravd\u011bpodobn\u011b je pou\u017e\u00edvat nebudou. Protokoly SSL a TLS byly vyvinuty proto, aby zv\u00fd\u0161ily bezpe\u010dnost \u0161ifrov\u00e1n\u00edm dat a pomohly chr\u00e1nit informace u\u017eivatel\u016f. Co je SSL (Secure Sockets Layer)?V roce 1990 byl vyvinut protokol, kter\u00fd m\u011bl zlep\u0161it bezpe\u010dnost [\u2026]<\/p>\n","protected":false},"author":7,"featured_media":3555,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3916","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>SSL vs. TLS: rozd\u00edly, zabezpe\u010den\u00ed a platnost<\/title>\n<meta name=\"description\" content=\"Zjist\u011bte, jak\u00e9 jsou rozd\u00edly mezi SSL a TLS, jak certifik\u00e1ty zabezpe\u010duj\u00ed weby a pro\u010d je platnost certifik\u00e1tu d\u016fle\u017eit\u00e1 pro bezpe\u010dnost a d\u016fv\u011bru u\u017eivatel\u016f.\" \/>\n<meta name=\"robots\" content=\"index, follow, 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