{"id":102843,"date":"2022-01-02T21:37:00","date_gmt":"2022-01-02T19:37:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/%d0%b4%d0%bb%d1%8f-%d1%8f%d0%b4%d1%80%d0%b0-linux-%d0%bf%d1%80%d0%b5%d0%b4%d0%bb%d0%be%d0%b6%d0%b5%d0%bd%d0%b0-%d1%80%d0%b5%d0%b0%d0%bb%d0%b8%d0%b7%d0%b0%d1%86%d0%b8%d1%8f-dev-random-%d0%b8%d0%b7"},"modified":"2022-01-02T21:37:00","modified_gmt":"2022-01-02T19:37:00","slug":"%d0%b4%d0%bb%d1%8f-%d1%8f%d0%b4%d1%80%d0%b0-linux-%d0%bf%d1%80%d0%b5%d0%b4%d0%bb%d0%be%d0%b6%d0%b5%d0%bd%d0%b0-%d1%80%d0%b5%d0%b0%d0%bb%d0%b8%d0%b7%d0%b0%d1%86%d0%b8%d1%8f-dev-random-%d0%b8%d0%b7","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/news\/%d0%b4%d0%bb%d1%8f-%d1%8f%d0%b4%d1%80%d0%b0-linux-%d0%bf%d1%80%d0%b5%d0%b4%d0%bb%d0%be%d0%b6%d0%b5%d0%bd%d0%b0-%d1%80%d0%b5%d0%b0%d0%bb%d0%b8%d0%b7%d0%b0%d1%86%d0%b8%d1%8f-dev-random-%d0%b8%d0%b7","title":{"rendered":"Linuxi kerni jaoks on ettepanek reaalsus \/dev\/random, mis on vabastatud SHA-1 sidumisest.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Jason Donenfeld, VPN WireGuardi autor, esitas RDRANDi pseudojuhuslike arvude generaatori uuendatud rakenduse, mis haldab seadmeid \/dev\/random ja \/dev\/urandom Linuxi k\u00e4rn. Novembri l\u00f5pus liideti Jason random draiveri hooldajate hulka ning n\u00fc\u00fcd on ta avaldanud oma t\u00f6\u00f6 esimesed tulemused selle \u00fcmberkujundamisest. <\/p>\n

Uus teostus paistab silma \u00fcleminekuga BLAKE2s hajutusfunktsiooni kasutamisele SHA1 asemel entropia segamise operatsioonides. See muudatus v\u00f5imaldas t\u00f5sta pseudojuhuslike arvude generaatori turvalisust, vabanedes probleemistikust SHA1 algoritmiga ja v\u00e4listades RNG initsialiseerimistektori \u00fcmberkirjutamise. Kuna BLAKE2s algoritm \u00fcletab SHA1 tootlikkuse osas, peegeldus selle rakendamine positiivselt ka pseudojuhuslike arvude generaatori tootlikkuses (testimine Intel i7-11850H protsessoril n\u00e4itas kiiruset\u00f5usu 131%). Teine eelis entropia segamise \u00fcleviimisel BLAKE2-le oli kasutatavate algoritmide \u00fchtlustamine \u2014 BLAKE2 on juba rakendatud ChaCha \u0161ifris, mida kasutatakse juhuslike j\u00e4rjestuste v\u00e4ljav\u00f5tmiseks. <\/p>\n

Lisaks on parendatud kr\u00fcptokindlat pseudojuhuslike arvude generaatorit CRNG, mida kasutatakse getrandomi kutsumisel. Parendused piiravad RDRANDi aeglase generaatori kutset entropia saamisel, mis suurendab j\u00f5udlust 3,7 korda. Jason n\u00e4itas, et RDRANDi kutsumine on m\u00f5istlik ainult siis, kui CRNG ei ole veel t\u00e4ielikult initsialiseeritud, kuid kui CRNG initsialiseerimine on l\u00f5pule j\u00f5udnud, ei m\u00f5juta selle v\u00e4\u00e4rtus genereeritud j\u00e4rjestuse kvaliteeti ning RDRANDile p\u00f6\u00f6rdumist ei ole sel juhul vaja. <\/p>\n

Muudatused on kavandatud kaasamiseks kernelisse 5.17 ja on juba arendajate Ted Ts\u2019o (random draiveri teine hoidja), Greg Kroah-Hartmani (Linuxi stabiilse haru haldamise eest vastutav) ja Jean-Philippe Aumassoni (BLAKE2\/3 algoritmide looja) poolt l\u00e4bi vaadatud.
\n
Allikas: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0414\u0436\u0435\u0439\u0441\u043e\u043d \u0414\u043e\u043d\u0435\u043d\u0444\u0438\u043b\u0434 (Jason A. Donenfeld), \u0430\u0432\u0442\u043e\u0440 VPN WireGuard, \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0438\u043b \u043e\u0431\u043d\u043e\u0432\u043b\u0451\u043d\u043d\u0443\u044e \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044e \u0433\u0435\u043d\u0435\u0440\u0430\u0442\u043e\u0440\u0430 \u043f\u0441\u0435\u0432\u0434\u043e\u0441\u043b\u0443\u0447\u0430\u0439\u043d\u044b\u0445 \u0447\u0438\u0441\u0435\u043b RDRAND, \u043e\u0442\u0432\u0435\u0447\u0430\u044e\u0449\u0435\u0433\u043e \u0437\u0430 \u0440\u0430\u0431\u043e\u0442\u0443 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432 \/dev\/random \u0438 \/dev\/urandom \u0432 \u044f\u0434\u0440\u0435 Linux. \u0412 \u043a\u043e\u043d\u0446\u0435 \u043d\u043e\u044f\u0431\u0440\u044f \u0414\u0436\u0435\u0439\u0441\u043e\u043d \u0431\u044b\u043b \u0432\u043a\u043b\u044e\u0447\u0451\u043d \u0432 \u0447\u0438\u0441\u043b\u043e \u043c\u044d\u0439\u043d\u0442\u0435\u0439\u043d\u0435\u0440\u043e\u0432 \u0434\u0440\u0430\u0439\u0432\u0435\u0440\u0430 random \u0438 \u0442\u0435\u043f\u0435\u0440\u044c \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b \u043f\u0435\u0440\u0432\u044b\u0435 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u044b \u0441\u0432\u043e\u0435\u0439 \u0440\u0430\u0431\u043e\u0442\u044b \u043f\u043e \u0435\u0433\u043e \u043f\u0435\u0440\u0435\u0440\u0430\u0431\u043e\u0442\u043a\u0435. \u041d\u043e\u0432\u0430\u044f \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044f \u043f\u0440\u0438\u043c\u0435\u0447\u0430\u0442\u0435\u043b\u044c\u043d\u0430 \u043f\u0435\u0440\u0435\u0445\u043e\u0434\u043e\u043c \u043d\u0430 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0445\u0435\u0448-\u0444\u0443\u043d\u043a\u0446\u0438\u0438 BLAKE2s \u0432\u043c\u0435\u0441\u0442\u043e […]<\/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-102843","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\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\udd47Linuxi kerni jaoks on ettepanek reaalsus \/dev\/random, mis on vabastatud SHA-1 sidumisest | ProHoster","description":"Jason Donenfeld, VPN WireGuardi autor, esitas RDRANDi pseudojuhuslike arvude generaatori uuendatud rakenduse, mis haldab seadmeid \/dev\/random ja \/dev\/urandom Linuxi k\u00e4rn.","canonical_url":"https:\/\/prohoster.info\/et\/blog\/news\/%d0%b4%d0%bb%d1%8f-%d1%8f%d0%b4%d1%80%d0%b0-linux-%d0%bf%d1%80%d0%b5%d0%b4%d0%bb%d0%be%d0%b6%d0%b5%d0%bd%d0%b0-%d1%80%d0%b5%d0%b0%d0%bb%d0%b8%d0%b7%d0%b0%d1%86%d0%b8%d1%8f-dev-random-%d0%b8%d0%b7","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"et_EE","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\u0414\u043b\u044f \u044f\u0434\u0440\u0430 Linux \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u0430 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044f \/dev\/random, \u0438\u0437\u0431\u0430\u0432\u043b\u0435\u043d\u043d\u0430\u044f \u043e\u0442 \u043f\u0440\u0438\u0432\u044f\u0437\u043a\u0438 \u043a SHA-1 | ProHoster","og:description":"\u0414\u0436\u0435\u0439\u0441\u043e\u043d \u0414\u043e\u043d\u0435\u043d\u0444\u0438\u043b\u0434 (Jason A. 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