{"id":5336,"date":"2025-12-19T20:42:48","date_gmt":"2025-12-19T20:42:48","guid":{"rendered":"https:\/\/mgcomdev.wpenginepowered.com\/glossary\/transport-layer-security-2\/"},"modified":"2026-09-09T04:21:28","modified_gmt":"2026-09-09T04:21:28","slug":"transport-layer-security","status":"publish","type":"glossary","link":"https:\/\/www.mailgun.com\/fr\/glossaire\/transport-layer-security\/","title":{"rendered":"Transport Layer Security (TLS)"},"content":{"rendered":"<h1>Transport Layer Security (TLS)<\/h1>\n<p><span data-contrast=\"none\">Le Transport Layer Security (TLS) est un protocole cryptographique qui chiffre les donn\u00e9es en transit entre les serveurs d&#8217;email, prot\u00e9geant ainsi les emails contre l&rsquo;\u00e9coute et la falsification pendant <\/span><span data-contrast=\"none\">qu&rsquo;ils sont<\/span><span data-contrast=\"none\"> en mouvement. Il fournit \u00e9galement une authentification du serveur, a<\/span><span data-contrast=\"none\">idant \u00e0 v\u00e9rifier que les messages sont \u00e9chang\u00e9s entre des parties l\u00e9gitimes.\u00a0<\/span><span data-ccp-props=\"{\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"none\">Le TLS chiffre le contenu de l&#8217;email pendant la transmission (non pas de bout en bout, mais de serveur \u00e0 serveur), emp\u00eache les attaques de l&rsquo;homme du milieu pendant le relais SMTP et authentifie les serveurs pour \u00e9tablir une connexion s\u00e9curis\u00e9e.<\/span><span data-ccp-props=\"{\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"none\">Il ne chiffre pas le contenu sur l&rsquo;appareil de l&rsquo;exp\u00e9diteur ou du destina<\/span><span data-contrast=\"none\">taire.<\/span><span data-ccp-props=\"{\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"none\">Le TLS <\/span><span data-contrast=\"none\">n&rsquo;est pas identique au<\/span><span data-contrast=\"none\"> chiffrement de bout en bout, qui garde le contenu de l&#8217;email confidentiel de l&rsquo;exp\u00e9diteur au <\/span><span data-contrast=\"none\">destina<\/span><span data-contrast=\"none\">taire, et m\u00eame vis-\u00e0-vis du service de messagerie lui-m\u00eame.<span data-ccp-props=\"{\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"none\">Les protocoles associ\u00e9s incluent\u00a0:<\/span><span data-ccp-props=\"{\">\u00a0<\/span><\/p>\n<ul>\n<li><b><span data-contrast=\"none\">SSL (Secure Sockets Layer)\u00a0: <\/span><\/b><span data-contrast=\"none\">pr\u00e9d\u00e9cesseur obsol\u00e8te et d\u00e9pr\u00e9ci\u00e9 <\/span><span data-contrast=\"none\">du TLS, encore mentionn\u00e9 <\/span><span data-contrast=\"none\">parf<\/span><span data-contrast=\"none\">ois, mais non recommand\u00e9.<\/span><span data-ccp-props=\"{\">\u00a0<\/span><\/li>\n<li><b><span data-contrast=\"none\">Chiffrement de <\/span><\/b><b><span data-contrast=\"none\">bout en bout<\/span><\/b><b><span data-contrast=\"none\"> (comme PGP ou S\/MIME)\u00a0:<\/span><\/b><span data-contrast=\"none\"> chiffre le message entier de l&rsquo;exp\u00e9diteur au destinataire afin que seul le destinataire pr\u00e9vu puisse le lire, m\u00eame si l&#8217;email est intercept\u00e9 ou si le fournisseur est compromis.<\/span><span data-ccp-props=\"{\">\u00a0<\/span><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Transport Layer Security (TLS) Le Transport Layer Security (TLS) est un protocole cryptographique qui chiffre les donn\u00e9es en transit entre les serveurs d&#8217;email, prot\u00e9geant ainsi les emails contre l&rsquo;\u00e9coute et la falsification pendant qu&rsquo;ils sont en mouvement. Il fournit \u00e9galement une authentification du serveur, aidant \u00e0 v\u00e9rifier que les messages sont \u00e9chang\u00e9s entre des parties [&hellip;]<\/p>\n","protected":false},"author":1,"template":"","meta":{"_acf_changed":false},"class_list":["post-5336","glossary","type-glossary","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Transport Layer Security \u2013 Glossaire des termes d&#039;email | Mailgun<\/title>\n<meta name=\"description\" content=\"Le Transport Layer Security (TLS) est une norme de chiffrement qui prot\u00e8ge les emails contre les cyberattaques. 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