{"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\/no\/blog\/news\/ad-nihilum-0-4-3","title":{"rendered":"Ad Nihilum 0.4.3","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Utgivelsen av Ad Nihilum 0.4.3 har skjedd \u2013 en minimalistisk tjeneste for utveksling av krypterte meldinger basert p\u00e5 prinsippet \"lest \u2013 brent\", som f\u00f8rst og fremst er rettet mot self-hosting.<\/p>\n<p>Serveren fungerer kun som et blindt lager. Kryptering og dekryptering skjer utelukkende p\u00e5 klientsiden, i nettleseren (gjennom AES-GCM).<\/p>\n<h3>Egenskaper<\/h3>\n<ul>\n<li>lokal kryptering og dekryptering, <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/no\/server\/\"   title=\"server\" data-wpil-keyword-link=\"linked\">server<\/a> ser aldri n\u00f8kkelen;<\/li>\n<li>st\u00f8tte for et ekstra krypteringslag med passord, som (1) serveren ikke kan kjenne, (2) ikke kan oppdages via den sendte lenken;<\/li>\n<li>prosjektet inneholder omtrent 2200 linjer serverkode i C og 600 linjer klientkode i JS, noe som forenkler revisjonen;<\/li>\n<li>Ad Nihilum avhenger kun av libmicrohttpd. For generering av QR-koder leveres en modifisert versjon av QRCode.js;<\/li>\n<li>det f\u00f8lger med en instruksjon for rask oppsett av en lokal tjeneste uten ekstern IP;<\/li>\n<li>Ad Nihilum fungerer ogs\u00e5 p\u00e5 Android, med et tilsvarende skript for bygging i Termux;<\/li>\n<li>enkelt-tr\u00e5det og synkront server.<\/li>\n<\/ul>\n<h3>Endringer<\/h3>\n<h4>Omfattende redesign<\/h4>\n<ul>\n<li>Sider for sending og mottak av meldinger er delt opp, med tilh\u00f8rende klientkode.<\/li>\n<li>Generelt er designet sterkt endret og korrigert med tanke p\u00e5 tilbakemeldinger fra lorcanere<\/li>\n<li>\"Enkel\" og lokal klienter:\n<ul> <noindex><\/p>\n<li>en klient med et forenklet design er lagt til <a rel=\"nofollow\" href=\"https:\/\/adnihilum.net\/simple\">https:\/\/adnihilum.net\/simple<\/a>;<\/li>\n<p><\/noindex> <\/p>\n<li>klientssidene kan lagres lokalt og brukes fra file:\/\/.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h4>Nettleserpolitikker<\/h4>\n<ul>\n<li>CSP er implementert for \u00e5 bekjempe XSS;<\/li>\n<li>serveren sender HSTS.<\/li>\n<\/ul>\n<h4>Other changes<\/h4>\n<ul>\n<li>prosjektet er omd\u00f8pt fra Epha-ots;<\/li>\n<li>domenet adnihilum.net er kj\u00f8pt;<\/li>\n<li>TLS er sikret med Let\u2019s Encrypt, dette er noe \u00e5 merke seg (ingen penger tilgjengelig);<\/li>\n<li>arbeidet med filer er forenklet;<\/li>\n<li>overgangen til fat-poeng;<\/li>\n<li>sm\u00e5 feil er fikset;<\/li>\n<li>auto-jsminify og bygging av klientfiler under bygging via CMake.<\/li>\n<\/ul>\n<h3>Oversikt over protokollen<\/h3>\n<p>Generer tre tilfeldige verdier: n\u00f8kkel <strong>K<\/strong>, initialiseringsvektor <strong>N<\/strong> og salt <strong>S<\/strong>. <strong>K<\/strong> \u2014 256 bit, <strong>N<\/strong> \u2014 96 bit, <strong>S<\/strong> \u2014 128 bit.<\/p>\n<p>Utgang <strong>ID<\/strong> fra <strong>K<\/strong> og <strong>S<\/strong> ved hjelp av HKDF basert p\u00e5 SHA-256.<\/p>\n<p>Opprett en streng med ekstra autentiserte data <strong>aad<\/strong> \u2014 det er bare en streng av typen: id=ID<\/p>\n<p>Hvis brukeren har angitt et passord:<\/p>\n<ul>\n<li>utgang <strong>Pk<\/strong> fra passordet og <strong>S<\/strong> ved hjelp av PBKDF2, SHA-256, 800000 iterasjoner;<\/li>\n<li>den samme saltet brukes for alt;<\/li>\n<li>krypter data med AES-GCM, ved bruk av n\u00f8kkelen <strong>Pk<\/strong>, IV\/nonce <strong>N<\/strong> og send <strong>aad<\/strong>.<\/li>\n<\/ul>\n<p>Legg til en to-bytes tag til allerede krypterte data hvis passordet var brukt, eller til de opprinnelige dataene hvis det ikke var noe passord.<\/p>\n<p>Den f\u00f8rste byten har betydning: den viser om dataene er krypteret med adgangskoden:<\/p>\n<ul>\n<li>0x73 \u2014 dataene er krypteret med adgangskoden;<\/li>\n<li>0x13 \u2014 dataene er ikke krypteret med adgangskoden.<\/li>\n<\/ul>\n<p>Den anden byten er en konstant v\u00e6rdi 0x37.<\/p>\n<p>Krypter resultatet igen ved hj\u00e6lp af AES-GCM, brug den samme iv = N og den samme <strong>aad<\/strong>. Dette giver den endelige chiffrede tekst <strong>ct<\/strong>.<\/p>\n<p>Sammens\u00e6t bytes til en streng: blob = N .. S .. ct<\/p>\n<p>Send <strong>blob<\/strong> til serveren sammen med <strong>ID<\/strong>. Serveren returnerer <strong>blob<\/strong> gennem dette <strong>ID<\/strong> og kan ikke blive \u00e6ndret: klienten kontrollerer f\u00f8rst <strong>ID<\/strong> med bruk av <strong>N<\/strong> og <strong>K<\/strong> allerede f\u00f8r dekryptering, og derefter \u2014 gennem <strong>aad<\/strong>.<\/p>\n<p>Klienten opbevarer <strong>K<\/strong>. <strong>K<\/strong> sendes aldrig til serveren. <strong>Pk<\/strong> heller ikke sendes; alt, der relaterer sig til adgangskoden, renses fra hukommelsen.<\/p>\n<p>Klienten danner et link: origin\/#ID\/K<\/p>\n<p>Her <strong>ID<\/strong> og <strong>K<\/strong> \u2014 strenge i base64url-format.<\/p>\n<p>N\u00e5r modtageren \u00e5bner linket:<\/p>\n<ul>\n<li>browseren ignorerer alt, der starter med #; dette kaldes location.hash;<\/li>\n<li>klientapplikationen indl\u00e6ses fra serveren;<\/li>\n<li>efter min mening er dette den st\u00f8rste s\u00e5rbarhed: vi st\u00f8der faktisk igen p\u00e5, at 'TLS er ut\u00e6t';<\/li>\n<li>men intet forhindrer opbevaring af klienten offline;<\/li>\n<li>ideelt set b\u00f8r der v\u00e6re en separat standalone-klient.<\/li>\n<\/ul>\n<p>Klientens JavaScript kontrollerer location.hash, og hvis der er <strong>ID<\/strong> og <strong>K<\/strong>, henter den data fra serveren.<\/p>\n<p>Derefter kontrollerer den dem, dekrypterer og, hvis n\u00f8dvendigt, beder om adgangskoden og dekrypterer igen.<\/p>\n<h3>Lisens<\/h3>\n<p>Projektet distribueres under GPLv3.<\/p>\n<p>Kilde: <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 5.0.5 - 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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