{"id":120904,"date":"2024-12-09T15:46:00","date_gmt":"2024-12-09T13:46:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/lets-encrypt-prekrashhaet-podderzhku-protokola-ocsp-dlya-proverki-otozvannyh-sertifikatov"},"modified":"2024-12-09T15:46:00","modified_gmt":"2024-12-09T13:46:00","slug":"lets-encrypt-prekrashhaet-podderzhku-protokola-ocsp-dlya-proverki-otozvannyh-sertifikatov","status":"publish","type":"post","link":"https:\/\/prohoster.info\/es\/blog\/news\/lets-encrypt-prekrashhaet-podderzhku-protokola-ocsp-dlya-proverki-otozvannyh-sertifikatov","title":{"rendered":"Let&apos;s Encrypt cesa el soporte del protocolo OCSP para la verificaci\u00f3n de certificados revocados.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>La autoridad certificadora sin fines de lucro Let&#8217;s Encrypt, controlada por la comunidad y que ofrece certificados de forma gratuita a todos los interesados, ha decidido dejar de dar soporte al protocolo OCSP (Online Certificate Status Protocol), utilizado para verificar la revocaci\u00f3n de certificados. En lugar del protocolo OCSP, se propone utilizar listas de certificados revocados (CRL &#8212; Certificate Revocation List), publicadas por el servicio Let&#8217;s Encrypt desde 2022. El 7 de mayo de 2025, Let&#8217;s Encrypt desactivar\u00e1 la inclusi\u00f3n de enlaces a direcciones OCSP en los certificados emitidos y dejar\u00e1 de procesar las solicitudes relacionadas con el uso de la extensi\u00f3n &#171;OCSP Must Staple&#187;. El 6 de agosto de 2025, los manejadores de solicitudes OCSP se desactivar\u00e1n en los servidores.      <\/p>\n<p>Como raz\u00f3n para la suspensi\u00f3n del soporte a OCSP se menciona la preocupaci\u00f3n por la privacidad. El uso de OCSP provoca que cada vez que se establece una conexi\u00f3n segura, el sistema del cliente env\u00ede una solicitud al servidor OCSP de la autoridad certificadora que emiti\u00f3 el certificado. En respuesta, el servidor proporciona informaci\u00f3n sobre la confianza en el certificado indicado. El problema es que la autoridad certificadora obtiene informaci\u00f3n sobre cu\u00e1ndo y qu\u00e9 sitios visita el usuario vinculada a su <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/es\/lir\/ipv4\/\"   title=\"IP\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"613\">IP<\/a>, lo que puede considerarse como una fuga de datos confidenciales. Adem\u00e1s, el uso de OCSP genera una demora en el procesamiento de la solicitud, requiere que el usuario tenga acceso a la red garantizado y crea dependencia del funcionamiento ininterrumpido de los servidores OCSP.     <\/p>\n<p>Para abordar los problemas de privacidad al verificar la revocaci\u00f3n de certificados, se ha desarrollado la tecnolog\u00eda OCSP Stapling, cuya esencia es que las respuestas OCSP certificadas por la autoridad certificadora pueden ser transmitidas por los servidores que gestionan los sitios durante la negociaci\u00f3n de la conexi\u00f3n TLS con el cliente (la entrega de informaci\u00f3n OCSP se traslada a <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/es\/server\/\"   title=\"servidores\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"1975\">servidores<\/a> los sitios, lo que libera al sistema del cliente de hacer una consulta directa al servidor OCSP de la autoridad certificadora, y la validez de las respuestas es garantizada por la firma digital de la autoridad certificadora).     <\/p>\n<p>Adem\u00e1s del OCSP Stapling, existe una extensi\u00f3n a\u00f1adida a los certificados llamada &#171;OCSP Must Staple&#187;, que obliga a los navegadores a utilizar la t\u00e9cnica OCSP Stapling en vez de hacer llamadas directas a los servidores OCSP y requiere que se considere que el certificado no es de confianza si el servidor del sitio atendido no devuelve una respuesta OCSP validada. Desafortunadamente, la extensi\u00f3n &#171;Must Staple&#187; no ha tenido una amplia adopci\u00f3n en los navegadores, y la tecnolog\u00eda OCSP Stapling depende de la necesidad de habilitar expl\u00edcitamente el soporte en el lado del servidor HTTP (en nginx se soporta desde 2013).    <\/p>\n<p>En el uso de CRL, la verificaci\u00f3n de la revocaci\u00f3n de certificados se realiza en el sistema local utilizando listas generadas por la autoridad certificadora. Las desventajas de este enfoque son el gran tama\u00f1o de los datos descargados y la aparici\u00f3n de un desfase temporal en la actualidad de la informaci\u00f3n (por ejemplo, en Firefox, los datos se actualizan cada 6 horas). El problema del tama\u00f1o se ha resuelto en los navegadores mediante la proxyizaci\u00f3n de CRL en los servidores de los fabricantes de navegadores &#8212; se incluye un CRL b\u00e1sico en los navegadores que, durante su funcionamiento, se sincroniza peri\u00f3dicamente con la lista actual (solo se transmiten al sistema del cliente los datos que han cambiado). Para reducir el tama\u00f1o de la base de datos con CRL, se utiliza una estructura probabil\u00edstica llamada &#171;filtro de Bloom&#187;, que permite almacenar la base completa de CRL en el lado del cliente de una manera muy compacta. En Firefox, una t\u00e9cnica similar se implementa mediante la herramienta CRLite, y en Chrome &#8212;  CRLSets.<br \/>\n<br \/>Fuente: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=62373\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041d\u0435\u043a\u043e\u043c\u043c\u0435\u0440\u0447\u0435\u0441\u043a\u0438\u0439 \u0443\u0434\u043e\u0441\u0442\u043e\u0432\u0435\u0440\u044f\u044e\u0449\u0438\u0439 \u0446\u0435\u043d\u0442\u0440 Let&#8217;s Encrypt, \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u0438\u0440\u0443\u0435\u043c\u044b\u0439 \u0441\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e\u043c \u0438 \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0449\u0438\u0439 \u0441\u0435\u0440\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u044b \u0431\u0435\u0437\u0432\u043e\u0437\u043c\u0435\u0437\u0434\u043d\u043e \u0432\u0441\u0435\u043c \u0436\u0435\u043b\u0430\u044e\u0449\u0438\u043c, \u043f\u0440\u0438\u043d\u044f\u043b \u0440\u0435\u0448\u0435\u043d\u0438\u0435 \u043f\u0440\u0435\u043a\u0440\u0430\u0442\u0438\u0442\u044c \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0443 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 OCSP (Online Certificate Status Protocol), \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u043e\u0433\u043e \u0434\u043b\u044f \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u043e\u0442\u0437\u044b\u0432\u0430 \u0441\u0435\u0440\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0432. \u0412\u043c\u0435\u0441\u0442\u043e \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 OCSP \u043f\u0440\u0435\u0434\u043b\u0430\u0433\u0430\u0435\u0442\u0441\u044f \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c \u0441\u043f\u0438\u0441\u043a\u0438 \u043e\u0442\u043e\u0437\u0432\u0430\u043d\u043d\u044b\u0445 \u0441\u0435\u0440\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0432 (CRL &#8212; Certificate Revocation List), \u043f\u0443\u0431\u043b\u0438\u043a\u0443\u0435\u043c\u044b\u0435 \u0441\u0435\u0440\u0432\u0438\u0441\u043e\u043c Let&#8217;s Encrypt \u043d\u0430\u0447\u0438\u043d\u0430\u044f \u0441 2022 \u0433\u043e\u0434\u0430. 7 \u043c\u0430\u044f 2025 \u0433\u043e\u0434\u0430 Let&#8217;s Encrypt [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-120904","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041d\u0435\u043a\u043e\u043c\u043c\u0435\u0440\u0447\u0435\u0441\u043a\u0438\u0439 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\u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47Let&amp;apos;s Encrypt \u043f\u0440\u0435\u043a\u0440\u0430\u0449\u0430\u0435\u0442 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0443 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 OCSP \u0434\u043b\u044f \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u043e\u0442\u043e\u0437\u0432\u0430\u043d\u043d\u044b\u0445 \u0441\u0435\u0440\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0432 | ProHoster","og:description":"\u041d\u0435\u043a\u043e\u043c\u043c\u0435\u0440\u0447\u0435\u0441\u043a\u0438\u0439 \u0443\u0434\u043e\u0441\u0442\u043e\u0432\u0435\u0440\u044f\u044e\u0449\u0438\u0439 \u0446\u0435\u043d\u0442\u0440 Let's Encrypt, 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