{"id":172755,"date":"2026-05-19T18:24:53","date_gmt":"2026-05-19T16:24:53","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/ad-nihilum-0-4-3"},"modified":"2026-05-19T18:24:53","modified_gmt":"2026-05-19T16:24:53","slug":"ad-nihilum-0-4-3","status":"publish","type":"post","link":"https:\/\/prohoster.info\/es\/blog\/news\/ad-nihilum-0-4-3","title":{"rendered":"Ad Nihilum 0.4.3","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Se ha lanzado Ad Nihilum 0.4.3, un servicio minimalista para el intercambio de mensajes cifrados bajo el principio de \u00able\u00eddo - quemado\u00bb, orientado principalmente al auto-hosting.<\/p>\n<p>El servidor act\u00faa solo como un almacenamiento ciego. El cifrado y descifrado ocurren exclusivamente del lado del cliente, en el navegador (a trav\u00e9s de AES-GCM).<\/p>\n<h3>Caracter\u00edsticas<\/h3>\n<ul>\n<li>cifrado y descifrado local, <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/es\/server\/\"   title=\"servidor\" data-wpil-keyword-link=\"linked\">servidor<\/a> nunca ve la clave;<\/li>\n<li>soporte para una capa adicional de cifrado por contrase\u00f1a, que (1) el servidor no puede conocer, (2) no se puede determinar a trav\u00e9s del enlace transmitido;<\/li>\n<li>el proyecto contiene alrededor de 2200 l\u00edneas de c\u00f3digo del servidor en C y 600 l\u00edneas de c\u00f3digo del cliente en JS, lo que facilita la auditor\u00eda;<\/li>\n<li>Ad Nihilum solo depende de libmicrohttpd. Se proporciona una versi\u00f3n modificada de QRCode.js para la generaci\u00f3n de c\u00f3digos QR;<\/li>\n<li>se incluye una gu\u00eda para levantar r\u00e1pidamente un servicio local sin una IP externa;<\/li>\n<li>Ad Nihilum funciona en Android, se adjunta un script correspondiente para compilar en Termux;<\/li>\n<li>servidor de un solo hilo y sincr\u00f3nico.<\/li>\n<\/ul>\n<h3>Cambios<\/h3>\n<h4>Redise\u00f1o a gran escala<\/h4>\n<ul>\n<li>Se separaron las p\u00e1ginas de env\u00edo y recepci\u00f3n de mensajes, el c\u00f3digo del cliente correspondiente.<\/li>\n<li>En general, el dise\u00f1o fue muy modificado y ajustado teniendo en cuenta los deseos de los lorchanos<\/li>\n<li>Clientes \u00absencillos\u00bb y locales:\n<ul> <noindex><\/p>\n<li>se agreg\u00f3 un cliente con un dise\u00f1o simplificado <a rel=\"nofollow\" href=\"https:\/\/adnihilum.net\/simple\">https:\/\/adnihilum.net\/simple<\/a>;<\/li>\n<p><\/noindex> <\/p>\n<li>las p\u00e1ginas del cliente se pueden guardar localmente y usar desde file:\/\/.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h4>Pol\u00edticas del navegador<\/h4>\n<ul>\n<li>se implement\u00f3 CSP para combatir XSS;<\/li>\n<li>el servidor env\u00eda HSTS.<\/li>\n<\/ul>\n<h4>Las fechas YYYY-M-DD y YYYY-MM-D ya no se interpretan<\/h4>\n<ul>\n<li>el proyecto fue renombrado de Epha-ots;<\/li>\n<li>se compr\u00f3 el dominio adnihilum.net;<\/li>\n<li>TLS se proporciona a trav\u00e9s de Let\u2019s Encrypt, eso es algo a tener en cuenta (no hay dinero);<\/li>\n<li>se simplific\u00f3 el manejo de archivos;<\/li>\n<li>transici\u00f3n a punteros-fat;<\/li>\n<li>se corrigieron errores menores;<\/li>\n<li>auto-jsminify y construcci\u00f3n de archivos del cliente al compilar a trav\u00e9s de CMake.<\/li>\n<\/ul>\n<h3>Revisi\u00f3n del protocolo<\/h3>\n<p>Generar tres valores aleatorios: la clave <strong>K<\/strong>, el vector de inicializaci\u00f3n <strong>N<\/strong> y la sal <strong>S<\/strong>. <strong>K<\/strong> \u2014 256 bits, <strong>N<\/strong> \u2014 96 bits, <strong>S<\/strong> \u2014 128 bits.<\/p>\n<p>Mostrar <strong>ID<\/strong> de <strong>K<\/strong> y <strong>S<\/strong> usando HKDF basado en SHA-256.<\/p>\n<p>Formar una cadena de datos adicionales autenticados <strong>aad<\/strong> \u2014 es simplemente una cadena del tipo: id=ID<\/p>\n<p>Si el usuario estableci\u00f3 una contrase\u00f1a:<\/p>\n<ul>\n<li>salida <strong>Pk<\/strong> de la contrase\u00f1a y <strong>S<\/strong> usando PBKDF2, SHA-256, 800000 iteraciones;<\/li>\n<li>la misma sal se utiliza para todo;<\/li>\n<li>cifrar datos usando AES-GCM, utilizando la clave <strong>Pk<\/strong>, IV\/nonce <strong>N<\/strong> y transmitir <strong>aad<\/strong>.<\/li>\n<\/ul>\n<p>Agregar una etiqueta de dos bytes a los datos ya cifrados, si hubo contrase\u00f1a, o a los datos originales si no hubo contrase\u00f1a.<\/p>\n<p>El primer byte tiene el valor: indica si los datos fueron cifrados por contrase\u00f1a:<\/p>\n<ul>\n<li>0x73 \u2014 los datos est\u00e1n cifrados por una contrase\u00f1a;<\/li>\n<li>0x13 \u2014 los datos no est\u00e1n cifrados por una contrase\u00f1a.<\/li>\n<\/ul>\n<p>El segundo byte es un valor constante 0x37.<\/p>\n<p>Volver a cifrar el resultado con AES-GCM, utilizando el mismo iv = N y el mismo <strong>aad<\/strong>. Esto proporciona el texto cifrado final <strong>ct<\/strong>.<\/p>\n<p>Combinar bytes en una cadena: blob = N .. S .. ct<\/p>\n<p>Enviar <strong>blob<\/strong> al servidor junto con <strong>ID<\/strong>. El servidor devuelve <strong>blob<\/strong> a trav\u00e9s de esto <strong>ID<\/strong> y no puede ser sustituido: el cliente primero comprobar\u00e1 <strong>ID<\/strong> utilizando <strong>N<\/strong> y <strong>K<\/strong> incluso antes de la descifrado, y luego a trav\u00e9s de <strong>aad<\/strong>.<\/p>\n<p>El cliente almacena <strong>K<\/strong>. <strong>K<\/strong> nunca se env\u00eda al servidor. <strong>Pk<\/strong> tambi\u00e9n no se env\u00eda; todo lo relacionado con la contrase\u00f1a se elimina de la memoria.<\/p>\n<p>El cliente forma un enlace: origin\/#ID\/K<\/p>\n<p>Aqu\u00ed <strong>ID<\/strong> y <strong>K<\/strong> \u2014 cadenas en formato base64url.<\/p>\n<p>Cuando el destinatario abre el enlace:<\/p>\n<ul>\n<li>el navegador descarta todo lo que comienza con #; esto se llama location.hash;<\/li>\n<li>la aplicaci\u00f3n cliente se carga desde el servidor;<\/li>\n<li>en mi opini\u00f3n, esta es la principal brecha: en realidad, estamos volviendo a encontrar que \u201cTLS es d\u00e9bil\u201d;<\/li>\n<li>sin embargo, nada impide que el cliente se almacene fuera de l\u00ednea;<\/li>\n<li>idealmente deber\u00eda haber un cliente independiente.<\/li>\n<\/ul>\n<p>El JavaScript del cliente verifica location.hash, y si hay <strong>ID<\/strong> y <strong>K<\/strong>, carga los datos desde el servidor.<\/p>\n<p>Luego los verifica, los descifra y, si es necesario, solicita la contrase\u00f1a y los descifra una vez m\u00e1s.<\/p>\n<h3>Licencia<\/h3>\n<p>El proyecto se distribuye bajo GPLv3.<\/p>\n<p>Fuente: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.linux.org.ru\/news\/opensource\/18293734\">linux.org.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0421\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0440\u0435\u043b\u0438\u0437 Ad Nihilum 0.4.3 \u2014 \u043c\u0438\u043d\u0438\u043c\u0430\u043b\u0438\u0441\u0442\u0438\u0447\u043d\u043e\u0433\u043e \u0441\u0435\u0440\u0432\u0438\u0441\u0430 \u0434\u043b\u044f \u043e\u0431\u043c\u0435\u043d\u0430 \u0437\u0430\u0448\u0438\u0444\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u043c\u0438 \u0441\u043e\u043e\u0431\u0449\u0435\u043d\u0438\u044f\u043c\u0438 \u043f\u043e \u043f\u0440\u0438\u043d\u0446\u0438\u043f\u0443 &laquo;\u043f\u0440\u043e\u0447\u0438\u0442\u0430\u043b \u2014 \u0441\u0436\u0435\u0433&raquo;, \u043e\u0440\u0438\u0435\u043d\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0433\u043e \u0432 \u043f\u0435\u0440\u0432\u0443\u044e \u043e\u0447\u0435\u0440\u0435\u0434\u044c \u043d\u0430 self-hosting. C\u0435\u0440\u0432\u0435\u0440 \u0432\u044b\u0441\u0442\u0443\u043f\u0430\u0435\u0442 \u043b\u0438\u0448\u044c \u0432 \u0440\u043e\u043b\u0438 \u0433\u043b\u0443\u0445\u043e\u0433\u043e \u0445\u0440\u0430\u043d\u0438\u043b\u0438\u0449\u0430. \u0428\u0438\u0444\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0438 \u0440\u0430\u0441\u0448\u0438\u0444\u0440\u043e\u0432\u043a\u0430 \u043f\u0440\u043e\u0438\u0441\u0445\u043e\u0434\u044f\u0442 \u0438\u0441\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e \u043d\u0430 \u0441\u0442\u043e\u0440\u043e\u043d\u0435 \u043a\u043b\u0438\u0435\u043d\u0442\u0430, \u0432 \u0431\u0440\u0430\u0443\u0437\u0435\u0440\u0435 (\u0447\u0435\u0440\u0435\u0437 AES-GCM). \u041e\u0441\u043e\u0431\u0435\u043d\u043d\u043e\u0441\u0442\u0438 \u043b\u043e\u043a\u0430\u043b\u044c\u043d\u043e\u0435 \u0437\u0430\u0448\u0438\u0444\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0438 \u0440\u0430\u0441\u0448\u0438\u0444\u0440\u043e\u0432\u0430\u043d\u0438\u0435, \u0441\u0435\u0440\u0432\u0435\u0440 \u043d\u0438\u043a\u043e\u0433\u0434\u0430 \u043d\u0435 \u0432\u0438\u0434\u0438\u0442 \u043a\u043b\u044e\u0447\u0430; \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 \u0434\u043e\u043f\u043e\u043b\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0433\u043e \u0441\u043b\u043e\u044f [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-172755","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=\"\u0421\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0440\u0435\u043b\u0438\u0437 Ad Nihilum 0.4.3 \u2014 \u043c\u0438\u043d\u0438\u043c\u0430\u043b\u0438\u0441\u0442\u0438\u0447\u043d\u043e\u0433\u043e \u0441\u0435\u0440\u0432\u0438\u0441\u0430 \u0434\u043b\u044f \u043e\u0431\u043c\u0435\u043d\u0430 \u0437\u0430\u0448\u0438\u0444\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u043c\u0438 \u0441\u043e\u043e\u0431\u0449\u0435\u043d\u0438\u044f\u043c\u0438 \u043f\u043e \u043f\u0440\u0438\u043d\u0446\u0438\u043f\u0443 \u00ab\u043f\u0440\u043e\u0447\u0438\u0442\u0430\u043b \u2014 \u0441\u0436\u0435\u0433\u00bb, \u043e\u0440\u0438\u0435\u043d\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0433\u043e \u0432 \u043f\u0435\u0440\u0432\u0443\u044e \u043e\u0447\u0435\u0440\u0435\u0434\u044c \u043d\u0430 self-hosting. 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