{"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\/it\/blog\/news\/reliz-openssh-9-9-s-podderzhkoj-algoritma-postkvantovogo-shifrovaniya-ml-kem","title":{"rendered":"Rilascio di OpenSSH 9.9 con supporto per l'algoritmo di crittografia post-quantistica ML-KEM","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Pubblicato il rilascio di OpenSSH 9.9, un'implementazione open source di client e server per operare con i protocolli SSH 2.0 e SFTP. Modifiche principali:  <\/p>\n<ul>\n<li class=\"l\"> In ssh and sshd, support for the hybrid key exchange algorithm \"mlkem768x25519-sha256\" has been added, which is resistant to brute force attacks by quantum computers and constitutes a combination of X25519 ECDH and the ML-KEM algorithm (CRYSTALS-Kyber), recently standardized by the National Institute of Standards and Technology (NIST). ML-KEM uses cryptographic methods based on solving lattice theory problems, the solution time of which does not differ on classical and quantum computers.\n<li class=\"l\"> The configuration file sshd_config has been updated with the keyword \"RefuseConnection\", which will cause sshd to terminate connections after the first authentication attempt. A class \"refuseconnection\" has been added to the PerSourcePenalties directive, which applies when a connection is terminated after the \"RefuseConnection\" is triggered.\n<li class=\"l\"> Nel client ssh \u00e8 stata interrotta la supporto alla compressione dei dati prima dell'autenticazione, che aumentava notevolmente la superficie di attacco sui server SSH e creava rischi di utilizzo di metodi indiretti di analisi delle informazioni inviate durante il processo di autenticazione. In <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/it\/server\/dts-newyork\/\"   title=\"server\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2785\">server<\/a> sshd la compressione prima dell'autenticazione era gi\u00e0 stata disabilitata.\n<li class=\"l\"> In ssh and sshd, when parsing arguments for the \"Match\" directive, shell-like string manipulation rules are used, which support nested quoting and escaping with the backslash character.\n<li class=\"l\"> In the ssh_config configuration file, the \"Include\" directive now supports environment variables and \"%\" substitutions, similar to the \"Match Exec\" directive.\n<li class=\"l\"> In sshd_config, the Match directive has been enhanced with the option \"invalid-user\", which triggers when a login attempt is made with an incorrect username.\n<li class=\"l\"> In ssh and sshd, a faster implementation of the algorithm \"Streamlined NTRUPrime\" has been incorporated. For the hybrid key exchange algorithm Streamlined NTRUPrime\/X25519, the option to use the name \"sntrup761x25519-sha512\" has been added, in addition to the SSH-specific name \"sntrup761x25519-sha512@openssh.com\".\n<li class=\"l\"> In ssh, sshd e ssh-agent \u00e8 stata implementata una protezione attiva in OpenBSD, Linux e FreeBSD contro il dumping delle chiavi private nei core dump.\n<li class=\"l\"> La gestione delle chiavi \u00e8 stata trasferita all'uso dell'API EVP_PKEY fornita dalla libreria libcrypto.\n<li class=\"l\"> In sshd \u00e8 stata aggiunta una variazione casuale del timeout di connessione (LoginGraceTime) di 4 secondi per complicare la determinazione della scadenza del timeout.\n<li class=\"l\"> Risolti problemi di compilazione con la libreria Musl.  <\/ul>\n<p>Fonte: <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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