{"id":119889,"date":"2024-09-20T21:43:01","date_gmt":"2024-09-20T19:43:01","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/reliz-openssh-9-9-s-podderzhkoj-algoritma-postkvantovogo-shifrovaniya-ml-kem"},"modified":"2024-09-20T21:43:01","modified_gmt":"2024-09-20T19:43:01","slug":"reliz-openssh-9-9-s-podderzhkoj-algoritma-postkvantovogo-shifrovaniya-ml-kem","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pl\/blog\/news\/reliz-openssh-9-9-s-podderzhkoj-algoritma-postkvantovogo-shifrovaniya-ml-kem","title":{"rendered":"Wydanie OpenSSH 9.9 z wsparciem dla postkwantowego algorytmu szyfrowania ML-KEM","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Opublikowano wersj\u0119 OpenSSH 9.9, otwartej implementacji klienta i serwera do pracy z protoko\u0142ami SSH 2.0 oraz SFTP. G\u0142\u00f3wne zmiany:  <\/p>\n<ul>\n<li class=\"l\"> W ssh i sshd dodano wsparcie dla hybrydowego algorytmu wymiany kluczy \u201emlkem768x25519-sha256\u201d, odpornego na \u0142amanie przez komputery kwantowe, b\u0119d\u0105cego po\u0142\u0105czeniem X25519 ECDH i algorytmu ML-KEM (CRYSTALS-Kyber), kt\u00f3ry niedawno zosta\u0142 usankcjonowany przez Narodowy Instytut Standaryzacji i Technologii USA (NIST). ML-KEM wykorzystuje metody kryptografii oparte na rozwi\u0105zywaniu problem\u00f3w teorii krat, czas rozwi\u0105zania kt\u00f3rych nie r\u00f3\u017cni si\u0119 na zwyk\u0142ych i komputerach kwantowych.\n<li class=\"l\"> Do pliku konfiguracyjnego sshd_config dodano s\u0142owo kluczowe \u201eRefuseConnection\u201d, kt\u00f3re po ustawieniu spowoduje zako\u0144czenie po\u0142\u0105cze\u0144 po pierwszej pr\u00f3bie uwierzytelnienia. Do dyrektywy PerSourcePenalties dodano klas\u0119 \u201erefuseconnection\u201d, kt\u00f3ra jest stosowana po zako\u0144czeniu po\u0142\u0105czenia po wyzwoleniu \u201eRefuseConnection\u201d.\n<li class=\"l\"> W kliencie ssh zaprzestano wsparcia dla kompresji danych przed przej\u015bciem procesu autoryzacji, co znacznie zwi\u0119ksza powierzchni\u0119 ataku na serwery SSH i stwarza ryzyko zastosowania po\u015brednich metod analizy informacji przesy\u0142anych w trakcie autoryzacji. W <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/pl\/server\/dts-newyork\/\"   title=\"serwerze\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2785\">serwerze<\/a> sshd kompresja przed autoryzacj\u0105 zosta\u0142a wy\u0142\u0105czona wcze\u015bniej.\n<li class=\"l\"> W ssh i sshd podczas analizy argument\u00f3w dyrektywy \u201eMatch\u201d zastosowano zasady podobne do shell, obs\u0142uguj\u0105ce ci\u0105gi uj\u0119te w cudzys\u0142owy, wspieraj\u0105ce zagnie\u017cd\u017cone otwarcia oraz escapowanie znakiem \u201e\u201d.\n<li class=\"l\"> W pliku konfiguracyjnym ssh_config w dyrektywie \u201eInclude\u201d zapewniono wsparcie dla zmiennych \u015brodowiskowych i \u201e%-wstawie\u0144\u201d, takich jak w dyrektywie \u201eMatch Exec\u201d.\n<li class=\"l\"> W sshd_config do dyrektywy Match dodano opcj\u0119 \u201einvalid-user\u201d, kt\u00f3ra uruchamia si\u0119 przy pr\u00f3bie logowania z niepoprawn\u0105 nazw\u0105 u\u017cytkownika.\n<li class=\"l\"> W ssh i sshd zastosowano szybsz\u0105 implementacj\u0119 algorytmu \u201eStreamlined NTRUPrime\u201d. Dla hybrydowego algorytmu wymiany kluczy Streamlined NTRUPrime\/X25519 dodano mo\u017cliwo\u015b\u0107 u\u017cycia nazwy \u201esntrup761x25519-sha512\u201d, opr\u00f3cz specyficznej dla SSH nazwy \u201esntrup761x25519-sha512@openssh.com\u201d.\n<li class=\"l\"> W ssh, sshd i ssh-agent dodano ochron\u0119 przed wyst\u0119powaniem prywatnych kluczy w plikach core dzia\u0142aj\u0105c\u0105 w OpenBSD, Linux i FreeBSD.\n<li class=\"l\"> Obs\u0142uga kluczy zosta\u0142a przestawiona na wykorzystanie API EVP_PKEY, dostarczanego przez bibliotek\u0119 libcrypto.\n<li class=\"l\"> W sshd dodano losowe zmienienie czasu oczekiwania na po\u0142\u0105czenie (LoginGraceTime) w granicach 4 sekund, aby utrudni\u0107 okre\u015blenie wygaszenia czasu.\n<li class=\"l\"> Rozwi\u0105zano problemy z budowaniem z bibliotek\u0105 Musl.  <\/ul>\n<p>\u0179r\u00f3d\u0142o: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=61899\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0440\u0435\u043b\u0438\u0437 OpenSSH 9.9, \u043e\u0442\u043a\u0440\u044b\u0442\u043e\u0439 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u043a\u043b\u0438\u0435\u043d\u0442\u0430 \u0438 \u0441\u0435\u0440\u0432\u0435\u0440\u0430 \u0434\u043b\u044f \u0440\u0430\u0431\u043e\u0442\u044b \u043f\u043e \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430\u043c SSH 2.0 \u0438 SFTP. \u041e\u0441\u043d\u043e\u0432\u043d\u044b\u0435 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f: \u0412 ssh \u0438 sshd \u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u0430 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 \u0433\u0438\u0431\u0440\u0438\u0434\u043d\u043e\u0433\u043e \u0430\u043b\u0433\u043e\u0440\u0438\u0442\u043c\u0430 \u043e\u0431\u043c\u0435\u043d\u0430 \u043a\u043b\u044e\u0447\u0430\u043c\u0438 &#171;mlkem768x25519-sha256&#187;, \u0441\u0442\u043e\u0439\u043a\u043e\u0433\u043e \u043a \u043f\u043e\u0434\u0431\u043e\u0440\u0443 \u043d\u0430 \u043a\u0432\u0430\u043d\u0442\u043e\u0432\u043e\u043c \u043a\u043e\u043c\u043f\u044c\u044e\u0442\u0435\u0440\u0435 \u0438 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0449\u0435\u0433\u043e \u0441\u043e\u0431\u043e\u0439 \u043a\u043e\u043c\u0431\u0438\u043d\u0430\u0446\u0438\u044e \u0438\u0437 X25519 ECDH \u0438 \u0430\u043b\u0433\u043e\u0440\u0438\u0442\u043c\u0430 ML-KEM (CRYSTALS-Kyber), \u043d\u0435\u0434\u0430\u0432\u043d\u043e \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u041d\u0430\u0446\u0438\u043e\u043d\u0430\u043b\u044c\u043d\u044b\u043c \u0438\u043d\u0441\u0442\u0438\u0442\u0443\u0442\u043e\u043c \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u043e\u0432 \u0438 \u0442\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u0439 \u0421\u0428\u0410 [&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-119889","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0440\u0435\u043b\u0438\u0437 OpenSSH 9.9, \u043e\u0442\u043a\u0440\u044b\u0442\u043e\u0439 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u043a\u043b\u0438\u0435\u043d\u0442\u0430 \u0438 \u0441\u0435\u0440\u0432\u0435\u0440\u0430 \u0434\u043b\u044f \u0440\u0430\u0431\u043e\u0442\u044b \u043f\u043e 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