{"id":182443,"date":"2026-07-02T22:53:28","date_gmt":"2026-07-02T20:53:29","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/problemy-s-ochistkoj-klyuchej-shifrovaniya-diska-iz-ozu-pri-perehode-linux-v-zhdushhij-rezhim"},"modified":"2026-07-02T22:53:28","modified_gmt":"2026-07-02T20:53:29","slug":"problemy-s-ochistkoj-klyuchej-shifrovaniya-diska-iz-ozu-pri-perehode-linux-v-zhdushhij-rezhim","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/problemy-s-ochistkoj-klyuchej-shifrovaniya-diska-iz-ozu-pri-perehode-linux-v-zhdushhij-rezhim","title":{"rendered":"Probl\u00e9my s vymaz\u00e1n\u00edm kl\u00ed\u010d\u016f \u0161ifrov\u00e1n\u00ed disku z RAM p\u0159i p\u0159echodu Linuxu do re\u017eimu sp\u00e1nku","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

P\u0159i portov\u00e1n\u00ed n\u00e1stroje cryptsetup-suspend pro NixOS byla zji\u0161t\u011bna chyba v pod syst\u00e9mu diskov\u00e9ho \u0161ifrov\u00e1n\u00ed LUKS (Linux Unified Key Setup), kter\u00e1 vedla k tomu, \u017ee od j\u00e1dra Linux 6.9 (problemov\u00fd commit), vydan\u00e9ho v kv\u011btnu 2024, p\u0159estala fungovat \u010dist\u011bn\u00ed \u0161ifrovac\u00edch kl\u00ed\u010d\u016f z opera\u010dn\u00ed pam\u011bti p\u0159i p\u0159echodu syst\u00e9mu do re\u017eimu sp\u00e1nku. <\/p>\n

N\u00e1stroj cryptsetup-suspend se pou\u017e\u00edv\u00e1 v Debianu k automatick\u00e9mu zamyk\u00e1n\u00ed LUKS odd\u00edl\u016f p\u0159ed p\u0159echodem do re\u017eimu sp\u00e1nku. P\u0159edpokl\u00e1d\u00e1 se, \u017ee v p\u0159\u00edpad\u011b kr\u00e1de\u017ee notebooku p\u0159eveden\u00e9ho do re\u017eimu sp\u00e1nku \u00fato\u010dn\u00edk nebude m\u00edt mo\u017enost p\u0159\u00edstupu k dat\u016fm, proto\u017ee po probuzen\u00ed bude vy\u017eadov\u00e1no zad\u00e1n\u00ed hesla pro obnoven\u00ed p\u0159\u00edstupu k \u0161ifrovan\u00fdm dat\u016fm. Kv\u016fli chyb\u011b v j\u00e1d\u0159e Linuxu po zablokov\u00e1n\u00ed LUKS odd\u00edlu p\u0159\u00edkazem \u201ecryptsetup luksSuspend\u201c se kl\u00ed\u010de nevymazaly z opera\u010dn\u00ed pam\u011bti a z\u016fstaly viditeln\u00e9 p\u0159es \/proc\/keys, co\u017e \u00fato\u010dn\u00edkovi umo\u017enilo je extrahovat, nap\u0159\u00edklad metodou \u201estuden\u00e9ho restartu\u201c, a pou\u017e\u00edt je pro p\u0159\u00edstup k dat\u016fm. <\/p>\n

Nedostatek \u010dist\u011bn\u00ed kl\u00ed\u010d\u016f byl zji\u0161t\u011bn p\u0159i lad\u011bn\u00ed stavu z\u00e1vodu, kv\u016fli kter\u00e9mu se vyskytly probl\u00e9my s p\u0159echodem do re\u017eimu sp\u00e1nku. Chyba se objevila po proveden\u00ed refaktoringu v j\u00e1d\u0159e 6.9, p\u0159i kter\u00e9m byly kl\u00ed\u010de p\u0159i\u0159azeny k volaj\u00edc\u00edmu vl\u00e1knu a m\u011bly b\u00fdt odstran\u011bny p\u0159i jeho ukon\u010den\u00ed, ale ve skute\u010dnosti z\u016fst\u00e1valy v pam\u011bti. Pro za\u0159azen\u00ed do j\u00e1dra Linux byl navr\u017een jednor\u00e1zov\u00fd patch, kter\u00fd odstra\u0148uje tuto chybu. <\/p>\n

Tento patch nebyl p\u0159ijat do j\u00e1dra, proto\u017ee obsahuje nedostatek \u2014 patch funguje pouze pro fyzick\u00e9 \u00falo\u017ei\u0161t\u011b, ale nefunguje pro virtu\u00e1ln\u00ed smy\u010dkov\u00e1 za\u0159\u00edzen\u00ed. M\u00edsto opravy probl\u00e9mu na stran\u011b j\u00e1dra auto\u0159i n\u00e1stroje cryptsetup navrhli obch\u00e1zej\u00edc\u00ed cestu pro vymaz\u00e1n\u00ed kl\u00ed\u010d\u016f. Tato zm\u011bna byla ji\u017e p\u0159ijata a bude sou\u010d\u00e1st\u00ed vyd\u00e1n\u00ed cryptsetup 2.8.7. <\/p>\n

Krom\u011b toho byla pro NixOS vytvo\u0159ena vlastn\u00ed implementace skript\u016f pro blokov\u00e1n\u00ed \u0161ifrovan\u00fdch disk\u016f p\u0159ed p\u0159echodem do re\u017eimu sp\u00e1nku, ve kter\u00e9 je vyu\u017eit star\u00fd patch j\u00e1dra, kter\u00fd nebyl p\u0159ijat v roce 2015 a kter\u00fd n\u00e1siln\u011b \u010dist\u00ed kl\u00ed\u010de z pam\u011bti p\u0159ed p\u0159echodem do sp\u00e1nkov\u00e9ho re\u017eimu.
\n
Zdroj: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412 \u0445\u043e\u0434\u0435 \u043f\u043e\u0440\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0434\u043b\u044f NixOS \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u044f cryptsetup-suspend \u0431\u044b\u043b\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u043e\u0448\u0438\u0431\u043a\u0430 \u0432 \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u0435 \u0434\u0438\u0441\u043a\u043e\u0432\u043e\u0433\u043e \u0448\u0438\u0444\u0440\u043e\u0432\u0430\u043d\u0438\u044f LUKS (Linux Unified Key Setup), \u0438\u0437-\u0437\u0430 \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u043d\u0430\u0447\u0438\u043d\u0430\u044f \u0441 \u044f\u0434\u0440\u0430 Linux 6.9 (\u043f\u0440\u043e\u0431\u043b\u0435\u043c\u043d\u044b\u0439 \u043a\u043e\u043c\u043c\u0438\u0442), \u0432\u044b\u043f\u0443\u0449\u0435\u043d\u043d\u043e\u0433\u043e \u0432 \u043c\u0430\u0435 2024 \u0433\u043e\u0434\u0430, \u043f\u0435\u0440\u0435\u0441\u0442\u0430\u043b\u0430 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