{"id":116956,"date":"2024-07-05T09:05:08","date_gmt":"2024-07-05T07:05:08","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/razrabotchik-wireguard-serezno-uskoril-vyzov-getrandom-v-linux"},"modified":"2024-07-05T09:05:08","modified_gmt":"2024-07-05T07:05:08","slug":"razrabotchik-wireguard-serezno-uskoril-vyzov-getrandom-v-linux","status":"publish","type":"post","link":"https:\/\/prohoster.info\/de\/blog\/novosti-interneta\/razrabotchik-wireguard-serezno-uskoril-vyzov-getrandom-v-linux","title":{"rendered":"Der WireGuard-Entwickler hat den Aufruf von getrandom() in Linux erheblich beschleunigt.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Jason A. Donenfeld, der Autor von VPN WireGuard, pr\u00e4sentierte Patches, die die Beschaffung von Zufallszahlen systematisch \u00fcber die Funktion getrandom() verbessern. Diese Funktion wird \u00fcber den entsprechenden Systemaufruf in Linux implementiert. Der Vorteil dieser L\u00f6sung im Vergleich zur Nutzung von \/dev\/random oder \/dev\/urandom ist die Resistenz gegen Datei-Descriptor-Angriffe, die zu nicht initialisierten und nicht zuf\u00e4lligen kryptografischen Schl\u00fcsseln f\u00fchren k\u00f6nnen. <\/p>\n

Die vorgeschlagene Optimierung basiert auf der Verwendung des vDSO-Mechanismus (virtual dynamic shared object), der es erm\u00f6glicht, den Systemaufruf-Handler aus dem Kernel in den Benutzerspeicher zu verlagern und Kontextwechsel zu vermeiden. Im Fall von getrandom() wurde die mit dieser Funktion verbundene Systemaufrufsimplementierung in Form von vDSO gestaltet, wobei der entsprechende Code direkt vom Kernel in den Adressraum des Prozesses geladen wird. Dieser Ansatz hat die Beschaffung von Zufallszahlen in bestimmten Situationen um das 15-Fache und mehr beschleunigt.
\n
Quelle: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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Donenfeld), \u0430\u0432\u0442\u043e\u0440 VPN WireGuard, \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043b \u043f\u0430\u0442\u0447\u0438, \u0437\u043d\u0430\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e \u0443\u0441\u043a\u043e\u0440\u044f\u044e\u0449\u0438\u0435 \u043f\u043e\u043b\u0443\u0447\u0435\u043d\u0438\u0435 \u0441\u043b\u0443\u0447\u0430\u0439\u043d\u044b\u0445 \u0447\u0438\u0441\u0435\u043b \u043e\u0442 \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u0447\u0435\u0440\u0435\u0437 \u0444\u0443\u043d\u043a\u0446\u0438\u044e getrandom(), \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d\u043d\u0443\u044e \u0447\u0435\u0440\u0435\u0437 \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u043d\u044b\u0439 \u0432\u044b\u0437\u043e\u0432 Linux. \u041f\u0440\u0435\u0438\u043c\u0443\u0449\u0435\u0441\u0442\u0432\u043e\u043c \u0442\u0430\u043a\u043e\u0433\u043e \u0440\u0435\u0448\u0435\u043d\u0438\u044f \u043f\u043e \u0441\u0440\u0430\u0432\u043d\u0435\u043d\u0438\u044e \u0441 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435\u043c \/dev\/random \u0438\u043b\u0438 \/dev\/urandom \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u043d\u0435\u043f\u043e\u0434\u0432\u0435\u0440\u0436\u0435\u043d\u043d\u043e\u0441\u0442\u044c \u0430\u0442\u0430\u043a\u0430\u043c \u043d\u0430 \u0438\u0441\u0447\u0435\u0440\u043f\u0430\u043d\u0438\u0435 \u0444\u0430\u0439\u043b\u043e\u0432\u044b\u0445 \u0434\u0435\u0441\u043a\u0440\u0438\u043f\u0442\u043e\u0440\u043e\u0432, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043c\u043e\u0433\u0443\u0442 \u043f\u0440\u0438\u0432\u0435\u0441\u0442\u0438 \u043a \u043d\u0435\u0438\u043d\u0438\u0446\u0438\u0430\u043b\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u043c \u0438 \u043d\u0435\u0441\u043b\u0443\u0447\u0430\u0439\u043d\u044b\u043c \u043a\u0440\u0438\u043f\u0442\u043e\u0433\u0440\u0430\u0444\u0438\u0447\u0435\u0441\u043a\u0438\u043c \u043a\u043b\u044e\u0447\u0430\u043c. \u041f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u043d\u0430\u044f \u043e\u043f\u0442\u0438\u043c\u0438\u0437\u0430\u0446\u0438\u044f \u043e\u0441\u043d\u043e\u0432\u0430\u043d\u0430 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-116956","post","type-post","status-publish","format-standard","hentry","category-novosti-interneta"],"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\udd47WireGuard-Entwickler beschleunigt getrandom()-Aufruf in Linux erheblich | ProHoster","description":"Jason A. Donenfeld, der Autor des VPN WireGuard, hat Patches vorgestellt, die die Geschwindigkeit der Zufallszahlengenerierung \u00fcber die Funktion getrandom(), implementiert durch den entsprechenden Systemaufruf von Linux, erheblich steigern. Der Vorteil dieser L\u00f6sung im Vergleich zur Nutzung von \/dev\/random oder \/dev\/urandom besteht darin, dass sie nicht anf\u00e4llig f\u00fcr Angriffe zur Ersch\u00f6pfung von Dateideskriptoren ist, die zu nicht initialisierten und nicht zuf\u00e4lligen kryptografischen Schl\u00fcsseln f\u00fchren k\u00f6nnen. Die vorgeschlagene Optimierung basiert auf","canonical_url":"https:\/\/prohoster.info\/de\/blog\/novosti-interneta\/razrabotchik-wireguard-serezno-uskoril-vyzov-getrandom-v-linux","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"de_DE","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\u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a Wireguard \u0441\u0435\u0440\u044c\u0435\u0437\u043d\u043e \u0443\u0441\u043a\u043e\u0440\u0438\u043b \u0432\u044b\u0437\u043e\u0432 getrandom() \u0432 Linux | ProHoster","og:description":"\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\u0441\u0442\u0430\u0432\u0438\u043b \u043f\u0430\u0442\u0447\u0438, \u0437\u043d\u0430\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e \u0443\u0441\u043a\u043e\u0440\u044f\u044e\u0449\u0438\u0435 \u043f\u043e\u043b\u0443\u0447\u0435\u043d\u0438\u0435 \u0441\u043b\u0443\u0447\u0430\u0439\u043d\u044b\u0445 \u0447\u0438\u0441\u0435\u043b \u043e\u0442 \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u0447\u0435\u0440\u0435\u0437 \u0444\u0443\u043d\u043a\u0446\u0438\u044e getrandom(), \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d\u043d\u0443\u044e \u0447\u0435\u0440\u0435\u0437 \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u043d\u044b\u0439 \u0432\u044b\u0437\u043e\u0432 Linux. \u041f\u0440\u0435\u0438\u043c\u0443\u0449\u0435\u0441\u0442\u0432\u043e\u043c \u0442\u0430\u043a\u043e\u0433\u043e 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