{"id":184233,"date":"2026-11-12T11:41:15","date_gmt":"2026-11-12T09:41:15","guid":{"rendered":"https:\/\/prohoster.info\/blog\/news\/udostoveryayushhij-czentr-emudhra-otozval-eshhyo-8-promezhutochnyh-kornevyh-sertifikatov"},"modified":"2026-11-12T11:41:21","modified_gmt":"2026-11-12T09:41:21","slug":"emudhra-certificate-authority-revokes-8-more-intermediate-root-certificates","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hr\/blog\/news\/emudhra-certificate-authority-revokes-8-more-intermediate-root-certificates","title":{"rendered":"Certifikacijski centar eMudhra povukao je jo\u0161 8 me\u0111usobnih korenskih certifikata.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Tvrtka eMudhra objavila je dodatne detalje vezane uz incident u kojem je osam korijenskih certifikata certifikacijskog tijela imalo lako pogodive privatne klju\u010deve, koji su imali samo 1 bajt entropije umjesto 48. Osim izvorno otkrivenih problemati\u010dnih me\u0111uresursnih korijenskih certifikata, izvje\u0161tava se o povla\u010denju jo\u0161 8, ali ne zbog problema s entropijom. Analiza je pokazala da su izvor problema s entropijom bili vlastito izra\u0111eni Python skripti koji su se koristili za prijenos privatnih klju\u010deva izme\u0111u hardverskih spremi\u0161ta klju\u010deva (HSM) razli\u010ditih proizvo\u0111a\u010da. Prijenos klju\u010deva bio je uzrokovan ka\u0161njenjima isporuke unaprije\u0111enih modela HSM-a koji udovoljavaju novim zahtjevima za certifikacijska tijela. <\/p>\n

Zbog gre\u0161ke, veli\u010dina privatnih klju\u010deva ECDSA smanjena je na 1 bajt. Nadalje, tijekom prijenosa klju\u010deva izme\u0111u HSM-a, skripta je obra\u0111ivala privatne klju\u010deve u neza\u0161ti\u0107enoj radnoj memoriji ra\u010dunala na kojem je pokrenuta, dok se operacije s privatnim klju\u010devima trebaju provoditi isklju\u010divo unutar HSM-a. Logovi HSM-a potvrdili su da su hardverska spremi\u0161ta radila ispravno, a problem je uzrokovan kori\u0161tenjem vlastitog skripta. <\/p>\n

Osim ECDSA klju\u010deva, skripta se koristila i za prijenos 8 RSA-4096 klju\u010deva, s kojima nije bilo problema s entropijom, no obrada klju\u010deva u obi\u010dnoj memoriji kr\u0161i sigurnosne zahtjeve postavljene za certifikacijska tijela, stoga su RSA certifikati tako\u0111er povu\u010deni.
\n
Izvor: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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\u0447\u0442\u043e \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u043e\u043c \u043f\u0440\u043e\u0431\u043b\u0435\u043c \u0441 \u044d\u043d\u0442\u0440\u043e\u043f\u0438\u0435\u0439 \u0441\u0442\u0430\u043b […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":10,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-184233","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\n","aioseo_head_json":{"title":"\ud83e\udd47Certifikacijsko tijelo eMudhra povuklo je jo\u0161 8 me\u0111uresursnih korijenskih certifikata | ProHoster","description":"Tvrtka eMudhra objavila je dodatne detalje vezane uz incident u kojem je osam korijenskih certifikata certifikacijskog tijela imalo lako pogodive privatne klju\u010deve, koji su imali samo 1 bajt.","canonical_url":"https:\/\/prohoster.info\/hr\/blog\/news\/emudhra-certificate-authority-revokes-8-more-intermediate-root-certificates","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"hr_HR","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u0423\u0434\u043e\u0441\u0442\u043e\u0432\u0435\u0440\u044f\u044e\u0449\u0438\u0439 \u0446\u0435\u043d\u0442\u0440 eMudhra \u043e\u0442\u043e\u0437\u0432\u0430\u043b \u0435\u0449\u0451 8 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