{"id":99236,"date":"2021-02-22T22:22:43","date_gmt":"2021-02-22T20:22:43","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-passwdqc-2-0-0-s-podderzhkoj-vneshnih-filtrov"},"modified":"2021-02-22T22:22:43","modified_gmt":"2021-02-22T20:22:43","slug":"vypusk-passwdqc-2-0-0-s-podderzhkoj-vneshnih-filtrov","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/news\/vypusk-passwdqc-2-0-0-s-podderzhkoj-vneshnih-filtrov","title":{"rendered":"Uscita di passwdqc 2.0.0 con supporto per filtri esterni","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

\u0412\u044b\u043f\u0443\u0449\u0435\u043d\u0430 \u043d\u043e\u0432\u0430\u044f \u0432\u0435\u0440\u0441\u0438\u044f passwdqc — \u043d\u0430\u0431\u043e\u0440\u0430 \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u043e\u0432 \u0434\u043b\u044f \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u044f \u0441\u043b\u043e\u0436\u043d\u043e\u0441\u0442\u0438 \u043f\u0430\u0440\u043e\u043b\u0435\u0439 \u0438 \u043f\u0430\u0440\u043e\u043b\u044c\u043d\u044b\u0445 \u0444\u0440\u0430\u0437, \u0432\u043a\u043b\u044e\u0447\u0430\u044e\u0449\u0435\u0433\u043e \u043c\u043e\u0434\u0443\u043b\u044c pam_passwdqc, \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u044b pwqcheck, pwqfilter (\u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u0430 \u0432 \u044d\u0442\u043e\u0439 \u0432\u0435\u0440\u0441\u0438\u0438) \u0438 pwqgen \u0434\u043b\u044f \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u0432\u0440\u0443\u0447\u043d\u0443\u044e \u0438\u043b\u0438 \u0438\u0437 \u0441\u043a\u0440\u0438\u043f\u0442\u043e\u0432, \u0430 \u0442\u0430\u043a\u0436\u0435 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0443 libpasswdqc. \u041f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u044e\u0442\u0441\u044f \u043a\u0430\u043a \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u0441 PAM (\u0431\u043e\u043b\u044c\u0448\u0438\u043d\u0441\u0442\u0432\u043e Linux, FreeBSD, DragonFly BSD, Solaris, HP-UX), \u0442\u0430\u043a \u0438 \u0431\u0435\u0437 PAM (\u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u0442\u0441\u044f \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441 passwordcheck \u0432 OpenBSD, \u043f\u0440\u0438\u043b\u0430\u0433\u0430\u0435\u0442\u0441\u044f \u043e\u0431\u0432\u044f\u0437\u043a\u0430 \u0434\u043b\u044f \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f pwqcheck \u0438\u0437 PHP, \u0441\u0443\u0449\u0435\u0441\u0442\u0432\u0443\u0435\u0442 \u043f\u043b\u0430\u0442\u043d\u0430\u044f \u0432\u0435\u0440\u0441\u0438\u044f \u0434\u043b\u044f Windows, \u0430 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u044b \u0438 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0430 \u0442\u0430\u043a\u0436\u0435 \u043c\u043e\u0433\u0443\u0442 \u0431\u044b\u0442\u044c \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u044b \u0438 \u043d\u0430 \u0434\u0440\u0443\u0433\u0438\u0445 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u0445). <\/p>\n

Rispetto alle versioni precedenti, \u00e8 stato aggiunto il supporto per file esterni di filtraggio delle password, inclusi quelli binari, attualmente implementati come filtro cuckoo migliorato. Questo filtro garantisce di non lasciare passare nessuna delle password vietate, sebbene possa occasionalmente generare falsi positivi, la cui probabilit\u00e0 con le impostazioni e l'algoritmo utilizzati in passwdqc \u00e8 trascurabile. Il controllo della password nel filtro richiede al massimo due accessi casuali in lettura dal disco, il che \u00e8 molto veloce e generalmente non crea un carico eccessivo. server<\/a>. <\/p>\n

Per la creazione e gestione di filtri binari in passwdqc \u00e8 stato aggiunto il programma pwqfilter. Pu\u00f2 creare un filtro sia da un elenco di password stesse sia dai loro hash MD4 o NTLM. Il supporto per gli hash NTLM consente di importare password da un elenco HIBP (Pwned Passwords), distribuito in questa forma. \u00c8 stato dedicato molto lavoro all'ottimizzazione di pwqfilter per prestazioni, compattezza dei filtri risultanti e livello di falsi positivi. Ad esempio, la creazione di un filtro cuckoo con un fattore di carico del 98% da un file pwned-passwords-ntlm-ordered-by-hash-v7.txt di 21 GiB (22 GB) e contenente oltre 613 milioni di righe richiede circa 8 minuti su un processore Core i7-4770K. Il filtro risultante occupa 2.3 GiB (2.5 GB) e ha un tasso di falsi positivi di circa 1 su 1.15 miliardi. Con un fattore di carico target pi\u00f9 basso, il filtro pu\u00f2 essere creato molto pi\u00f9 rapidamente e avr\u00e0 un tasso di falsi positivi ancora pi\u00f9 basso, ma le sue dimensioni saranno maggiori. <\/p>\n

passwdqc gestisce molto bene il rifiuto delle password deboli senza utilizzare file esterni. Il loro utilizzo pu\u00f2 aumentare ulteriormente l'efficacia di passwdqc senza arrecare quasi alcun disagio agli utenti, oppure pu\u00f2 consentire di allentare altre restrizioni. Controllare le password scelte dagli utenti rispetto alle perdite note \u00e8 raccomandato dal NIST. Per il progetto Openwall, questa \u00e8 una potenziale opportunit\u00e0 di finanziamento per lo sviluppo di passwdqc (e non solo) attraverso la vendita di filtri pronti, senza limitare agli utenti la possibilit\u00e0 di creare filtri autonomamente utilizzando il programma pwqfilter rilasciato con licenza open source. <\/p>\n

pwqfilter lavora con stringhe arbitrarie ed \u00e8 applicabile come sostituto di grep per molti scopi, anche non legati a password e sicurezza. Tenendo conto di ci\u00f2, pwqfilter ha diverse opzioni simili a quelle di grep, evita di utilizzare nomi di opzioni che contraddicono quelle presenti in grep, e usa gli stessi codici di ritorno di grep. <\/p>\n

Per compiti in cui i falsi positivi sono estremamente indesiderati, il loro livello pu\u00f2 essere ridotto, ad esempio, a uno su quintilioni (miliardo di miliardi) con un coefficiente di carico fino al 44%. (Il filtro di Cuckoo classico non consente una riduzione cos\u00ec significativa del livello di falsi positivi con la diminuzione del coefficiente di carico. In passwdqc questo \u00e8 ottenuto grazie a miglioramenti dell'algoritmo).
\n
Fonte: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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\u043d\u0430\u0431\u043e\u0440\u0430 \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u043e\u0432 \u0434\u043b\u044f \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u044f \u0441\u043b\u043e\u0436\u043d\u043e\u0441\u0442\u0438 \u043f\u0430\u0440\u043e\u043b\u0435\u0439 \u0438 \u043f\u0430\u0440\u043e\u043b\u044c\u043d\u044b\u0445 \u0444\u0440\u0430\u0437, \u0432\u043a\u043b\u044e\u0447\u0430\u044e\u0449\u0435\u0433\u043e \u043c\u043e\u0434\u0443\u043b\u044c pam_passwdqc, \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u044b pwqcheck, pwqfilter (\u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u0430 \u0432 \u044d\u0442\u043e\u0439 \u0432\u0435\u0440\u0441\u0438\u0438) \u0438 pwqgen \u0434\u043b\u044f.","og:url":"https:\/\/prohoster.info\/it\/blog\/news\/vypusk-passwdqc-2-0-0-s-podderzhkoj-vneshnih-filtrov","og:image":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:secure_url":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:width":350,"og:image:height":350,"article:published_time":"2021-02-22T20:22:43+00:00","article:modified_time":"2021-02-22T20:22:43+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"99236","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[],"defaultGraph":"","defaultPostTypeGraph":""},"schema_type":null,"schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"seo_analyzer_scan_date":null,"breadcrumb_settings":null,"limit_modified_date":false,"reviewed_by":null,"ai":null,"created":"2021-02-28 09:53:59","updated":"2026-02-22 15:29:50","focus_keyword":null,"additional_keywords":null,"truseo_locale":null},"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/posts\/99236","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/comments?post=99236"}],"version-history":[{"count":1,"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/posts\/99236\/revisions"}],"predecessor-version":[{"id":162219,"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/posts\/99236\/revisions\/162219"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/media?parent=99236"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/categories?post=99236"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/tags?post=99236"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}