{"id":104971,"date":"2022-08-30T15:36:43","date_gmt":"2022-08-30T13:36:43","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/v-fedora-linux-39-planiruyut-po-umolchaniyu-otklyuchit-podderzhku-podpisej-na-osnove-sha-1"},"modified":"2022-08-30T15:36:43","modified_gmt":"2022-08-30T13:36:43","slug":"v-fedora-linux-39-planiruyut-po-umolchaniyu-otklyuchit-podderzhku-podpisej-na-osnove-sha-1","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/news\/v-fedora-linux-39-planiruyut-po-umolchaniyu-otklyuchit-podderzhku-podpisej-na-osnove-sha-1","title":{"rendered":"No Fedora Linux 39, planejam desabilitar por padr\u00e3o o suporte a assinaturas baseadas em SHA-1.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Os desenvolvedores do projeto Fedora tra\u00e7aram um plano para desativar o suporte a assinaturas digitais baseadas no algoritmo SHA-1 no Fedora Linux 39. A desativa\u00e7\u00e3o implica na interrup\u00e7\u00e3o da confian\u00e7a em assinaturas que usam hashes SHA-1 (o SHA-224 ser\u00e1 declarado como o m\u00ednimo suportado em assinaturas digitais), mas o suporte a HMAC com SHA-1 ser\u00e1 mantido, e ser\u00e1 oferecida a possibilidade de ativar o perfil LEGACY com SHA-1. Ap\u00f3s a aplica\u00e7\u00e3o das altera\u00e7\u00f5es, a biblioteca OpenSSL come\u00e7ar\u00e1 por padr\u00e3o a bloquear a gera\u00e7\u00e3o e verifica\u00e7\u00e3o de assinaturas com SHA-1. <\/p>\n

A desativa\u00e7\u00e3o ser\u00e1 realizada em v\u00e1rias etapas: No Fedora Linux 36, as assinaturas baseadas em SHA-1 ser\u00e3o exclu\u00eddas da pol\u00edtica «FUTURE», e uma pol\u00edtica de teste TEST-FEDORA39 ser\u00e1 fornecida para desativar o SHA-1 a pedido do usu\u00e1rio (update-crypto-policies —set TEST-FEDORA39). Ao criar e verificar assinaturas baseadas em SHA-1, avisos ser\u00e3o exibidos no log. Durante a prepara\u00e7\u00e3o do lan\u00e7amento do Fedora Linux 38, antes da forma\u00e7\u00e3o da vers\u00e3o beta, uma pol\u00edtica que pro\u00edbe o uso de assinaturas baseadas em SHA-1 ser\u00e1 aplicada no reposit\u00f3rio rawhide, mas essa mudan\u00e7a n\u00e3o ser\u00e1 aplicada na vers\u00e3o beta e no lan\u00e7amento do Fedora Linux 38. No lan\u00e7amento do Fedora Linux 39, a pol\u00edtica de descontinua\u00e7\u00e3o do suporte a assinaturas baseadas em SHA-1 ser\u00e1 aplicada por padr\u00e3o. <\/p>\n

O plano proposto ainda n\u00e3o foi avaliado pelo comit\u00ea FESCo (Fedora Engineering Steering Committee), respons\u00e1vel pela parte t\u00e9cnica do desenvolvimento da distribui\u00e7\u00e3o Fedora. A interrup\u00e7\u00e3o do suporte a assinaturas SHA-1 \u00e9 motivada pelo aumento da efic\u00e1cia dos ataques de colis\u00e3o com prefixo definido (o custo da colis\u00e3o \u00e9 estimado em v\u00e1rias dezenas de milhares de d\u00f3lares). Navegadores web come\u00e7aram a marcar certificados assinados usando o algoritmo SHA-1 como inseguros desde meados de 2016.
\n
Fonte: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 Fedora \u043d\u0430\u043c\u0435\u0442\u0438\u043b\u0438 \u043f\u043b\u0430\u043d \u043e\u0442\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u044f \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0438 \u0446\u0438\u0444\u0440\u043e\u0432\u044b\u0445 \u043f\u043e\u0434\u043f\u0438\u0441\u0435\u0439 \u043d\u0430 \u043e\u0441\u043d\u043e\u0432\u0435 \u0430\u043b\u0433\u043e\u0440\u0438\u0442\u043c\u0430 SHA-1 \u0432 Fedora Linux 39. \u041e\u0442\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0435 \u043f\u0440\u0435\u0434\u043f\u043e\u043b\u0430\u0433\u0430\u0435\u0442 \u043f\u0440\u0435\u043a\u0440\u0430\u0449\u0435\u043d\u0438\u0435 \u0434\u043e\u0432\u0435\u0440\u0438\u044f \u043a \u043f\u043e\u0434\u043f\u0438\u0441\u044f\u043c, \u0432 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0442\u0441\u044f \u0445\u044d\u0448\u0438 SHA-1 (\u0432 \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435 \u043c\u0438\u043d\u0438\u043c\u0430\u043b\u044c\u043d\u043e \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u043c\u043e\u0433\u043e \u0432 \u0446\u0438\u0444\u0440\u043e\u0432\u044b\u0445 \u043f\u043e\u0434\u043f\u0438\u0441\u044f\u0445 \u0431\u0443\u0434\u0435\u0442 \u0437\u0430\u044f\u0432\u043b\u0435\u043d SHA-224), \u043d\u043e \u0441\u043e\u0445\u0440\u0430\u043d\u0435\u043d\u0438\u0435 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0438 HMAC \u0441 SHA-1 \u0438 \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u0438\u0438 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u0438 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u044c LEGACY-\u043f\u0440\u043e\u0444\u0438\u043b\u044c \u0441 SHA-1. \u041f\u043e\u0441\u043b\u0435 \u043f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0439 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0430 […]<\/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-104971","post","type-post","status-publish","format-standard","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\udd47No Fedora Linux 39, planejam desativar o suporte a assinaturas com SHA-1 por padr\u00e3o | ProHoster","description":"Os desenvolvedores do projeto Fedora tra\u00e7aram um plano para desativar o suporte a assinaturas digitais baseadas no algoritmo SHA-1 no Fedora Linux 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