{"id":101355,"date":"2021-09-21T16:22:37","date_gmt":"2021-09-21T14:22:38","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/google-opublikoval-hiba-nadstrojku-nad-openssh-dlya-avtorizaczii-na-osnove-sertifikatov"},"modified":"2021-09-21T16:22:37","modified_gmt":"2021-09-21T14:22:38","slug":"google-opublikoval-hiba-nadstrojku-nad-openssh-dlya-avtorizaczii-na-osnove-sertifikatov","status":"publish","type":"post","link":"https:\/\/prohoster.info\/da\/blog\/news\/google-opublikoval-hiba-nadstrojku-nad-openssh-dlya-avtorizaczii-na-osnove-sertifikatov","title":{"rendered":"Google har offentliggjort HIBA, et lag oven p\u00e5 OpenSSH til certifikatbaseret autentificering","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Google har offentliggjort kildekoden til projektet HIBA (Host Identity Based Authorization), som tilbyder implementeringen af en ekstra autorisationsmekanisme til at organisere adgangen for brugere via SSH i relation til v\u00e6rter (kontrollerer, om adgangen til en bestemt ressource er tilladt eller ej ved autentificering med offentlige n\u00f8gler). Integration med OpenSSH sikres gennem angivelsen af HIBA-h\u00e5ndtereren i direktivet AuthorizedPrincipalsCommand i \/etc\/ssh\/sshd_config. Projektets kode er skrevet p\u00e5 C og distribueres under BSD-licensen. <\/p>\n

HIBA bruger de indbyggede autentifikationsmekanismer baseret p\u00e5 OpenSSH-certifikater til fleksibel og centraliseret styring af brugernes autorisation relateret til v\u00e6rter, men kr\u00e6ver ikke periodisk \u00e6ndring af filerne authorized_keys og authorized_users p\u00e5 de v\u00e6rter, som der forbindes til. I stedet for at opbevare listen over tilladte offentlige n\u00f8gler og adgangsbetingelser i filerne authorized_(keys|users) integrerer HIBA oplysninger om bindende brugere til v\u00e6rter direkte i selve certifikaterne. Is\u00e6r er der foresl\u00e5et udvidelser for v\u00e6rtens certifikater og brugerens certifikater, hvor v\u00e6rtsparametre og betingelser for brugeradgang opbevares. <\/p>\n

Kontrollen p\u00e5 v\u00e6rtssiden initieres gennem kaldet til h\u00e5ndtereren hiba-chk, der er angivet i direktivet AuthorizedPrincipalsCommand. Denne h\u00e5ndterer dekoder de integrerede udvidelser i certifikaterne og tr\u00e6ffer beslutning om at give eller blokere adgang baseret p\u00e5 dem. Adgangsreglerne defineres centralt p\u00e5 niveauet for certifikatmyndigheden (CA) og integreres i certifikaterne p\u00e5 tidspunktet for deres oprettelse. <\/p>\n

P\u00e5 certificeringsmyndighedens side opretholdes en f\u00e6lles liste over tilg\u00e6ngelige bef\u00f8jelser (v\u00e6rter, som forbindelsen er tilladt til) og listen over brugere, der har tilladelse til at udnytte disse bef\u00f8jelser. For at generere certificerede certifikater med integrerede oplysninger om bef\u00f8jelser er der foresl\u00e5et et v\u00e6rkt\u00f8j hiba-gen, og funktionaliteten, der er n\u00f8dvendig for at oprette en certificeringsmyndighed, er trukket ud i scriptet iba-ca.sh. <\/p>\n

Under connection, the specified credentials in the certificate are verified by the digital signature of the certificate authority, allowing all checks to be performed entirely on the target host without contacting external services. The list of the public keys of the certificate authority that certifies SSH certificates is specified through the TrustedUserCAKeys directive. <\/p>\n

In addition to directly linking users to hosts, HIBA allows for defining more flexible access rules. For example, information such as location and service type can be linked to hosts, and when defining user access rules, users can be permitted to connect to all hosts of a specified service type or to hosts in a designated location.

\"Google<\/center>
\"Google<\/center>
\n
Kilde: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Google \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b\u0430 \u0438\u0441\u0445\u043e\u0434\u043d\u044b\u0435 \u0442\u0435\u043a\u0441\u0442\u044b \u043f\u0440\u043e\u0435\u043a\u0442\u0430 HIBA (Host Identity Based Authorization), \u043f\u0440\u0435\u0434\u043b\u0430\u0433\u0430\u044e\u0449\u0435\u0433\u043e \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044e \u0434\u043e\u043f\u043e\u043b\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0433\u043e \u043c\u0435\u0445\u0430\u043d\u0438\u0437\u043c\u0430 \u0430\u0432\u0442\u043e\u0440\u0438\u0437\u0430\u0446\u0438\u0438 \u0434\u043b\u044f \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u0438 \u0434\u043e\u0441\u0442\u0443\u043f\u0430 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439 \u043f\u043e SSH \u0432 \u043f\u0440\u0438\u0432\u044f\u0437\u043a\u0435 \u043a \u0445\u043e\u0441\u0442\u0430\u043c (\u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438, \u0440\u0430\u0437\u0440\u0435\u0448\u0451\u043d \u0438\u043b\u0438 \u043d\u0435\u0442 \u0434\u043e\u0441\u0442\u0443\u043f \u043a \u043a\u043e\u043d\u043a\u0440\u0435\u0442\u043d\u043e\u043c\u0443 \u0440\u0435\u0441\u0443\u0440\u0441\u0443 \u043f\u0440\u0438 \u0430\u0443\u0442\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438 \u043f\u043e \u043e\u0442\u043a\u0440\u044b\u0442\u044b\u043c \u043a\u043b\u044e\u0447\u0430\u043c). \u0418\u043d\u0442\u0435\u0433\u0440\u0430\u0446\u0438\u044f \u0441 OpenSSH \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0438\u0432\u0430\u0435\u0442\u0441\u044f \u0447\u0435\u0440\u0435\u0437 \u0443\u043a\u0430\u0437\u0430\u043d\u0438\u0435 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0430 HIBA \u0432 \u0434\u0438\u0440\u0435\u043a\u0442\u0438\u0432\u0435 AuthorizedPrincipalsCommand \u0432 \/etc\/ssh\/sshd_config. \u041a\u043e\u0434 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 \u043d\u0430\u043f\u0438\u0441\u0430\u043d […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":101356,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-101355","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Google has published HIBA, an extension for OpenSSH for certificate-based authorization | ProHoster","description":"Google has published the source texts of the HIBA (Host Identity Based Authorization) project, which proposes an implementation of an additional authorization mechanism for organizing SSH user 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\u0441\u0435\u0440\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0432 | ProHoster","og:description":"\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Google \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b\u0430 \u0438\u0441\u0445\u043e\u0434\u043d\u044b\u0435 \u0442\u0435\u043a\u0441\u0442\u044b \u043f\u0440\u043e\u0435\u043a\u0442\u0430 HIBA (Host Identity Based Authorization), \u043f\u0440\u0435\u0434\u043b\u0430\u0433\u0430\u044e\u0449\u0435\u0433\u043e \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044e \u0434\u043e\u043f\u043e\u043b\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0433\u043e \u043c\u0435\u0445\u0430\u043d\u0438\u0437\u043c\u0430 \u0430\u0432\u0442\u043e\u0440\u0438\u0437\u0430\u0446\u0438\u0438 \u0434\u043b\u044f \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u0438 \u0434\u043e\u0441\u0442\u0443\u043f\u0430 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439 \u043f\u043e SSH \u0432 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