{"id":3902,"date":"2026-11-03T09:30:00","date_gmt":"2026-11-03T09:30:00","guid":{"rendered":"https:\/\/potenting.com\/fr\/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-fr","status":"publish","type":"post","link":"https:\/\/potenting.com\/fr\/blog\/how-ssl-tls-certificates-protect-your-website\/","title":{"rendered":"Comment les certificats SSL\/TLS prot\u00e8gent-ils votre site web ?"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"3902\" class=\"elementor elementor-3902\" 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;Aucun titre n\\u2019a \\u00e9t\\u00e9 trouv\\u00e9 sur cette page.&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\tTable des mati\u00e8res\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>Aujourd\u2019hui, les internautes accordent une grande importance \u00e0 la s\u00e9curit\u00e9. S\u2019ils se rendent compte qu\u2019un site web ou une application peut mettre leur s\u00e9curit\u00e9 en danger, il est peu probable qu\u2019ils l\u2019utilisent. Les protocoles SSL et TLS ont \u00e9t\u00e9 con\u00e7us pour renforcer la s\u00e9curit\u00e9 en chiffrant les donn\u00e9es et en contribuant \u00e0 prot\u00e9ger les informations des utilisateurs.<\/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>Qu\u2019est-ce que SSL (Secure Sockets Layer) ?<\/h2><p>En 1990, un protocole a \u00e9t\u00e9 d\u00e9velopp\u00e9 pour am\u00e9liorer la s\u00e9curit\u00e9 sur Internet en chiffrant les donn\u00e9es et en r\u00e9duisant le risque d\u2019acc\u00e8s par des personnes non autoris\u00e9es. Avant l\u2019arriv\u00e9e de SSL, les communications entre les serveurs web et les navigateurs \u00e9taient expos\u00e9es \u00e0 diverses menaces de s\u00e9curit\u00e9. Avec l\u2019introduction de ce protocole, son utilisation est progressivement devenue une norme de s\u00e9curit\u00e9, et de nombreuses entreprises l\u2019ont adopt\u00e9 pour prot\u00e9ger la vie priv\u00e9e de leurs utilisateurs.<\/p><p>Si SSL semblait au d\u00e9part \u00eatre une solution efficace, il pr\u00e9sentait plusieurs failles et limites qui l\u2019emp\u00eachaient d\u2019\u00eatre consid\u00e9r\u00e9 comme un protocole enti\u00e8rement fiable.<\/p><p>Par exemple, en 2014, une vuln\u00e9rabilit\u00e9 majeure a \u00e9t\u00e9 d\u00e9couverte dans SSL 3.0, susceptible de permettre \u00e0 des pirates d\u2019obtenir un acc\u00e8s non autoris\u00e9. Les d\u00e9veloppeurs ont alors commenc\u00e9 \u00e0 chercher une alternative plus s\u00fbre et plus fiable.<\/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>Qu\u2019est-ce que TLS (Transport Layer Security) ?<\/h2><p>TLS a \u00e9t\u00e9 d\u00e9velopp\u00e9 pour corriger les lacunes de SSL et le remplacer. Introduit en 1999, ce protocole offrait de meilleures performances et des connexions plus s\u00e9curis\u00e9es, au point de devenir la norme du secteur. TLS a le m\u00eame objectif que SSL : s\u00e9curiser les communications entre les navigateurs web et les serveurs. Cependant, comme il offre un niveau de s\u00e9curit\u00e9 bien plus \u00e9lev\u00e9, recourir \u00e0 des protocoles obsol\u00e8tes ou non s\u00e9curis\u00e9s au lieu de TLS peut exposer les syst\u00e8mes \u00e0 des risques de s\u00e9curit\u00e9.<\/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>Comparaison entre SSL et TLS<\/h2><p>SSL et TLS ont le m\u00eame objectif : s\u00e9curiser les communications sur Internet. Ils diff\u00e8rent toutefois par leur fonctionnement et par le niveau de s\u00e9curit\u00e9 qu\u2019ils offrent.<\/p><ul><li><h3>Principales diff\u00e9rences entre SSL et TLS<\/h3><ul><li><span style=\"color: #cb5c48;\">Chiffrement :<\/span> TLS utilise des algorithmes et des techniques de chiffrement plus robustes et plus avanc\u00e9s. Il prend en charge AES pour le chiffrement des donn\u00e9es et HMAC pour garantir l\u2019int\u00e9grit\u00e9 des messages, ce qui le rend plus s\u00fbr que son pr\u00e9d\u00e9cesseur, SSL.<\/li><li><span style=\"color: #cb5c48;\">Authentification renforc\u00e9e :<\/span> TLS utilise des m\u00e9thodes plus avanc\u00e9es pour v\u00e9rifier l\u2019identit\u00e9 des parties qui communiquent, ce qui r\u00e9duit le risque d\u2019attaques de l\u2019homme du milieu (MITM). Son processus de n\u00e9gociation (handshake) int\u00e8gre \u00e9galement des m\u00e9canismes d\u2019authentification plus s\u00fbrs.<\/li><li><span style=\"color: #cb5c48;\">Meilleures performances et rapidit\u00e9 :<\/span> TLS optimise le processus d\u2019\u00e9tablissement des connexions s\u00e9curis\u00e9es et r\u00e9duit la surcharge li\u00e9e aux communications. La n\u00e9gociation peut ainsi \u00eatre plus rapide et la latence de connexion plus faible, ce qui rend TLS mieux adapt\u00e9 aux applications web modernes.<\/li><\/ul><\/li><li><h3>Points communs entre SSL et TLS<\/h3><ul><li><span style=\"color: #cb5c48;\">Chiffrement des donn\u00e9es :<\/span> les deux protocoles sont con\u00e7us pour chiffrer les donn\u00e9es et \u00e9tablir des connexions s\u00e9curis\u00e9es entre les navigateurs web et les serveurs. TLS est le protocole le plus r\u00e9cent, d\u00e9velopp\u00e9 pour corriger les faiblesses de s\u00e9curit\u00e9 de SSL.<\/li><li><span style=\"color: #cb5c48;\">Terminologie :<\/span> bien que SSL soit obsol\u00e8te, le terme est encore couramment employ\u00e9 pour d\u00e9signer les connexions et les certificats TLS.<\/li><li><span style=\"color: #cb5c48;\">Objectif :<\/span> les deux protocoles visent \u00e0 prot\u00e9ger les donn\u00e9es pendant leur transmission sur un r\u00e9seau. Ils s\u2019appuient sur des m\u00e9canismes de s\u00e9curit\u00e9 pour assurer l\u2019authentification et \u00e9tablir des connexions chiffr\u00e9es.<\/li><li><span style=\"color: #cb5c48;\">Utilisation dans HTTPS :<\/span> HTTPS utilise TLS pour s\u00e9curiser les communications entre un navigateur et un serveur web. La pr\u00e9sence de `https:\/\/` dans la barre d\u2019adresse indique que le site web utilise une connexion chiffr\u00e9e.<\/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>Pourquoi SSL a-t-il \u00e9t\u00e9 abandonn\u00e9 ?<\/h2><p>L\u2019abandon de SSL \u00e9tait une mesure de s\u00e9curit\u00e9 n\u00e9cessaire. L\u2019utilisation d\u2019algorithmes de chiffrement faibles, la vuln\u00e9rabilit\u00e9 \u00e0 diverses attaques comme les attaques de l\u2019homme du milieu (MITM) et l\u2019incapacit\u00e9 \u00e0 r\u00e9pondre aux exigences de s\u00e9curit\u00e9 modernes ont rendu ce protocole obsol\u00e8te et peu fiable.<\/p><p>De plus, les navigateurs web modernes ne prennent plus en charge les anciennes versions de SSL. Ils peuvent \u00e9galement afficher des avertissements de s\u00e9curit\u00e9 lorsque les utilisateurs consultent des sites web qui reposent sur ces protocoles d\u00e9pass\u00e9s.<\/p><h3>Pourquoi le terme SSL est-il encore utilis\u00e9 ?<\/h3><p>Bien que SSL soit obsol\u00e8te, le terme reste largement utilis\u00e9 pour parler des protocoles de chiffrement. M\u00eame si TLS est devenu la norme pour s\u00e9curiser les communications en ligne, beaucoup continuent de l\u2019appeler SSL par habitude.<\/p><p>Il est toutefois important de comprendre que SSL en lui-m\u00eame est obsol\u00e8te et n\u2019est plus pris en charge. Lorsque l\u2019on parle aujourd\u2019hui de \u00ab certificat SSL \u00bb, il s\u2019agit g\u00e9n\u00e9ralement d\u2019un certificat utilis\u00e9 avec TLS, m\u00eame si l\u2019appellation SSL reste courante.<\/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>Quel avenir pour les certificats TLS ?<\/h2><p>\u00c0 l\u2019avenir, TLS renforcera la s\u00e9curit\u00e9 des communications gr\u00e2ce \u00e0 la mise \u00e0 jour des algorithmes cryptographiques et \u00e0 l\u2019adoption de m\u00e9thodes r\u00e9sistantes aux ordinateurs quantiques. En revanche, la r\u00e9duction de la dur\u00e9e de validit\u00e9 des certificats \u00e0 47 jours, si elle am\u00e9liore la s\u00e9curit\u00e9, rendra la gestion des certificats et leur renouvellement dans les d\u00e9lais plus complexes.<\/p><p>Par cons\u00e9quent, les outils et protocoles d\u2019automatisation comme ACME prendront de plus en plus d\u2019importance pour g\u00e9rer les certificats, \u00e9viter leur expiration et pr\u00e9venir les interruptions de service.<\/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>Faut-il utiliser un certificat TLS ?<\/h2><p>Oui, sans aucun doute. Si vous souhaitez d\u00e9velopper votre activit\u00e9 et gagner la confiance de vos utilisateurs, l\u2019utilisation de TLS est indispensable.<\/p><p>Bien que certains sites web fonctionnent encore sans protocole de chiffrement, des navigateurs comme Google Chrome affichent des avertissements de s\u00e9curit\u00e9 lorsque les utilisateurs les consultent. Ces derniers sont alors moins enclins \u00e0 leur faire confiance ou \u00e0 continuer de les utiliser, ce qui peut nuire \u00e0 la r\u00e9putation et aux performances globales d\u2019un site web.<\/p><p>Pour rester comp\u00e9titif et r\u00e9ussir en ligne, votre site web a besoin d\u2019un certificat TLS afin de s\u00e9curiser les communications et d\u2019\u00e9tablir une relation de confiance avec les utilisateurs.<\/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=\"\/fr\/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>Conclusion : quelle est la dur\u00e9e de validit\u00e9 d\u2019un certificat SSL ?<\/h2><p>La dur\u00e9e de validit\u00e9 d\u2019un certificat SSL\/TLS correspond \u00e0 la p\u00e9riode pendant laquelle le certificat reste valable pour s\u00e9curiser les communications. Actuellement, la dur\u00e9e de validit\u00e9 maximale est de 398 jours. Cependant, cette dur\u00e9e diminuera progressivement \u00e0 partir de mars 2026, pour atteindre 47 jours d\u2019ici mars 2029.<\/p><p>L\u2019objectif de ce changement est de renforcer la s\u00e9curit\u00e9, de r\u00e9duire le risque d\u2019exposition des cl\u00e9s cryptographiques et de limiter la fen\u00eatre dont disposent les attaquants pour exploiter des certificats compromis ou vuln\u00e9rables.<\/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>FAQ<\/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. Que se passe-t-il lorsqu\u2019un certificat SSL\/TLS expire ?<\/h3><p style=\"padding-left: 40px;\">Les visiteurs peuvent voir s\u2019afficher des avertissements de s\u00e9curit\u00e9, et les navigateurs peuvent ne plus consid\u00e9rer la connexion comme s\u00e9curis\u00e9e, ce qui risque d\u2019affecter la confiance des utilisateurs et l\u2019accessibilit\u00e9 du site web.<\/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. Pourquoi la dur\u00e9e de validit\u00e9 des certificats SSL\/TLS diminue-t-elle ?<\/h3><p style=\"padding-left: 40px;\">Des dur\u00e9es de validit\u00e9 plus courtes permettent de limiter la p\u00e9riode pendant laquelle des certificats compromis ou d\u00e9tourn\u00e9s peuvent rester valides, et encouragent des mises \u00e0 jour plus fr\u00e9quentes des certificats.<\/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. Un certificat SSL\/TLS am\u00e9liore-t-il le SEO ?<\/h3><p style=\"padding-left: 40px;\">HTTPS est un signal de classement mineur pour Google. Toutefois, un certificat SSL\/TLS ne garantit pas \u00e0 lui seul un meilleur positionnement dans les r\u00e9sultats de recherche.<\/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>Aujourd\u2019hui, les internautes accordent une grande importance \u00e0 la s\u00e9curit\u00e9. S\u2019ils se rendent compte qu\u2019un site web ou une application peut mettre leur s\u00e9curit\u00e9 en danger, il est peu probable qu\u2019ils l\u2019utilisent. Les protocoles SSL et TLS ont \u00e9t\u00e9 con\u00e7us pour renforcer la s\u00e9curit\u00e9 en chiffrant les donn\u00e9es et en contribuant \u00e0 prot\u00e9ger les informations [\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-3902","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 ou TLS : diff\u00e9rences, s\u00e9curit\u00e9 et validit\u00e9<\/title>\n<meta name=\"description\" content=\"D\u00e9couvrez les diff\u00e9rences entre SSL et TLS, comment les certificats s\u00e9curisent les sites web et pourquoi leur validit\u00e9 compte pour la s\u00e9curit\u00e9 et la confiance.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/potenting.com\/fr\/blog\/how-ssl-tls-certificates-protect-your-website\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"SSL ou TLS : diff\u00e9rences, s\u00e9curit\u00e9 et validit\u00e9\" \/>\n<meta property=\"og:description\" content=\"D\u00e9couvrez les diff\u00e9rences entre SSL et TLS, comment les certificats s\u00e9curisent les sites web et pourquoi leur validit\u00e9 compte pour la s\u00e9curit\u00e9 et la confiance.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/potenting.com\/fr\/blog\/how-ssl-tls-certificates-protect-your-website\/\" \/>\n<meta property=\"og:site_name\" content=\"Potenting Blog\" \/>\n<meta property=\"article:published_time\" content=\"2026-11-03T09:30:00+00:00\" \/>\n<meta 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