{"id":105412,"date":"2022-10-30T15:36:45","date_gmt":"2022-10-30T13:36:45","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/v-kodovuyu-bazu-freebsd-dobavlena-novaya-realizacziya-vpn-wireguard"},"modified":"2022-10-30T15:36:45","modified_gmt":"2022-10-30T13:36:45","slug":"v-kodovuyu-bazu-freebsd-dobavlena-novaya-realizacziya-vpn-wireguard","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/v-kodovuyu-bazu-freebsd-dobavlena-novaya-realizacziya-vpn-wireguard","title":{"rendered":"Do k\u00f3du FreeBSD byla p\u0159id\u00e1na nov\u00e1 implementace VPN WireGuard.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Do stromu zdrojov\u00fdch text\u016f FreeBSD byly p\u0159ijaty zm\u011bny s novou implementac\u00ed VPN WireGuard, zalo\u017een\u00e9 na k\u00f3du j\u00e1drov\u00e9ho modulu, kter\u00fd spole\u010dn\u011b p\u0159ipravily hlavn\u00ed t\u00fdmy v\u00fdvoj\u00e1\u0159\u016f FreeBSD a WireGuard za \u00fa\u010dasti Jasona Donenfelda, autora VPN WireGuard, a Johna Baldwina, zn\u00e1m\u00e9ho v\u00fdvoj\u00e1\u0159e GDB a FreeBSD, kter\u00fd na za\u010d\u00e1tku 2000. let implementoval podporu SMP a NUMA v j\u00e1d\u0159e FreeBSD. Po p\u0159ijet\u00ed ovlada\u010de do FreeBSD (sys\/dev\/wg) bude jeho v\u00fdvoj a \u00fadr\u017eba nyn\u00ed prob\u00edhat v repozit\u00e1\u0159i FreeBSD. <\/p>\n

P\u0159ed p\u0159ijet\u00edm k\u00f3du pod dohledem organizace FreeBSD Foundation bylo provedeno \u00fapln\u00e9 posouzen\u00ed zm\u011bn, b\u011bhem kter\u00e9ho byl tak\u00e9 analyzov\u00e1n interakce ovlada\u010de s ostatn\u00edmi subsyst\u00e9my j\u00e1dra a posouzena mo\u017enost vyu\u017eit\u00ed kryptografick\u00fdch primitiv\u016f, kter\u00e9 j\u00e1dro poskytuje. <\/p>\n

Pro pou\u017eit\u00ed pot\u0159ebn\u00fdch kryptografick\u00fdch algoritm\u016f ovlada\u010de do\u0161lo k roz\u0161\u00ed\u0159en\u00ed API kryptosyst\u00e9mu j\u00e1dra FreeBSD, do kter\u00e9ho byla p\u0159id\u00e1na vrstva, umo\u017e\u0148uj\u00edc\u00ed vyu\u017e\u00edvat prost\u0159ednictv\u00edm standardn\u00edho kryptografick\u00e9ho API algoritmy, kter\u00e9 ve FreeBSD nejsou podporov\u00e1ny, s vyu\u017eit\u00edm implementace pot\u0159ebn\u00fdch algoritm\u016f z knihovny libsodium. Z algoritm\u016f, kter\u00e9 jsou sou\u010d\u00e1st\u00ed ovlada\u010de, byl ponech\u00e1n pouze k\u00f3d pro v\u00fdpo\u010det hash\u016f Blake2, proto\u017ee poskytovan\u00e1 implementace tohoto algoritmu ve FreeBSD je nav\u00e1zan\u00e1 na pevnou velikost hashe. <\/p>\n

Krom\u011b toho byla b\u011bhem posuzov\u00e1n\u00ed provedena optimalizace k\u00f3du, kter\u00e1 v\u00fdrazn\u011b zv\u00fd\u0161ila \u00fa\u010dinnost rozd\u011blen\u00ed z\u00e1t\u011b\u017ee na v\u00edcej\u00e1drov\u00fdch CPU (bylo zaji\u0161t\u011bno rovnom\u011brn\u00e9 rozlo\u017een\u00ed \u00faloh \u0161ifrov\u00e1n\u00ed a de\u0161ifrov\u00e1n\u00ed paket\u016f na j\u00e1dra CPU). V d\u016fsledku toho byly re\u017eijn\u00ed n\u00e1klady p\u0159i zpracov\u00e1n\u00ed paket\u016f p\u0159ibl\u00ed\u017eeny k implementaci ovlada\u010de pro Linux. V k\u00f3du byla tak\u00e9 zaji\u0161t\u011bna mo\u017enost pou\u017eit\u00ed ovlada\u010de ossl pro zrychlen\u00ed \u0161ifrovac\u00edch operac\u00ed. <\/p>\n

Na rozd\u00edl od p\u0159edchoz\u00ed pokusu o integraci WireGuard do FreeBSD, nov\u00e1 implementace vyu\u017e\u00edv\u00e1 standardn\u00ed utilitu wg, nikoliv modifikovanou verzi ifconfig, co\u017e umo\u017enilo unifikaci konfigurace v Linuxu a FreeBSD. Utilita wg a ovlada\u010d jsou sou\u010d\u00e1st\u00ed zdrojov\u00fdch k\u00f3d\u016f FreeBSD, co\u017e bylo umo\u017en\u011bno zm\u011bnou licenc\u00ed na k\u00f3d wg (k\u00f3d je nyn\u00ed dostupn\u00fd pod licencemi MIT a GPL). P\u0159edchoz\u00ed pokus o za\u010dlen\u011bn\u00ed WireGuard do FreeBSD byl u\u010din\u011bn v roce 2020, ale skon\u010dil skand\u00e1lem, b\u011bhem kter\u00e9ho byl ji\u017e p\u0159idan\u00fd k\u00f3d odstran\u011bn kv\u016fli n\u00edzk\u00e9 kvalit\u011b, nezodpov\u011bdn\u00e9mu zach\u00e1zen\u00ed s buffery, pou\u017e\u00edv\u00e1n\u00ed z\u00e1stupn\u00fdch symbol\u016f m\u00edsto kontrol, ne\u00fapln\u00e9 implementaci protokolu a poru\u0161en\u00ed licence GPL. <\/p>\n

P\u0159ipom\u00edn\u00e1me, \u017ee VPN<\/a> WireGuard je implementov\u00e1n na z\u00e1klad\u011b modern\u00edch \u0161ifrovac\u00edch metod, zaji\u0161\u0165uje velmi vysok\u00fd v\u00fdkon, je snadno pou\u017eiteln\u00fd, bez zbyte\u010dn\u00fdch komplikac\u00ed a osv\u011bd\u010dil se v \u0159ad\u011b velk\u00fdch nasazen\u00ed, kter\u00e9 zpracov\u00e1vaj\u00ed velk\u00e9 objemy provozu. Projekt se vyv\u00edj\u00ed od roku 2015, pro\u0161el auditem a form\u00e1ln\u00ed verifikac\u00ed pou\u017eit\u00fdch \u0161ifrovac\u00edch metod. V WireGuard je pou\u017eita koncepce sm\u011brov\u00e1n\u00ed na z\u00e1klad\u011b \u0161ifrovac\u00edch kl\u00ed\u010d\u016f, kter\u00e1 zahrnuje p\u0159id\u011blen\u00ed soukrom\u00e9ho kl\u00ed\u010de ka\u017ed\u00e9mu s\u00ed\u0165ov\u00e9mu rozhran\u00ed a pou\u017eit\u00ed pro propojen\u00ed ve\u0159ejn\u00fdch kl\u00ed\u010d\u016f. <\/p>\n

V\u00fdm\u011bna ve\u0159ejn\u00fdch kl\u00ed\u010d\u016f pro nav\u00e1z\u00e1n\u00ed spojen\u00ed prob\u00edh\u00e1 podobn\u011b jako p\u0159i SSH. Pro dohodu o kl\u00ed\u010d\u00edch a spojen\u00ed bez spu\u0161t\u011bn\u00ed samostatn\u00e9ho d\u00e9mona v u\u017eivatelsk\u00e9m prostoru se pou\u017e\u00edv\u00e1 mechanismus Noise_IK z Noise Protocol Framework, kter\u00fd je podobn\u00fd zachov\u00e1n\u00ed authorized_keys v SSH. P\u0159enos dat se prov\u00e1d\u00ed prost\u0159ednictv\u00edm kapsulace do UDP paket\u016f. Podporov\u00e1na je zm\u011bna IP adres<\/a> VPN servery (roaming) bez p\u0159eru\u0161en\u00ed spojen\u00ed s automatick\u00fdm p\u0159eprogramov\u00e1n\u00edm klienta. <\/p>\n

K \u0161ifrov\u00e1n\u00ed se pou\u017e\u00edv\u00e1 proudov\u00e1 \u0161ifra ChaCha20 a algoritmus autentizace zpr\u00e1v (MAC) Poly1305, kter\u00e9 vytvo\u0159ili Daniel Bernstein, Tanja Lange a Peter Schwabe. ChaCha20 a Poly1305 jsou pova\u017eov\u00e1ny za rychlej\u0161\u00ed a bezpe\u010dn\u011bj\u0161\u00ed alternativy k AES-256-CTR a HMAC, jejich\u017e softwarov\u00e1 implementace umo\u017e\u0148uje dos\u00e1hnout konstantn\u00ed doby prov\u00e1d\u011bn\u00ed bez zapojen\u00ed speci\u00e1ln\u00ed hardwarov\u00e9 podpory. K generov\u00e1n\u00ed sd\u00edlen\u00e9ho tajn\u00e9ho kl\u00ed\u010de se pou\u017e\u00edv\u00e1 protokol Diffie-Hellman na eliptick\u00fdch k\u0159ivk\u00e1ch v implementaci Curve25519, rovn\u011b\u017e navr\u017een\u00e9 Danielem Bernsteinem. K hashov\u00e1n\u00ed se pou\u017e\u00edv\u00e1 algoritmus BLAKE2s (RFC7693).
\n
Zdroj: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412 \u0434\u0435\u0440\u0435\u0432\u043e \u0438\u0441\u0445\u043e\u0434\u043d\u044b\u0445 \u0442\u0435\u043a\u0441\u0442\u043e\u0432 FreeBSD \u043f\u0440\u0438\u043d\u044f\u0442\u044b \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u0441 \u043d\u043e\u0432\u043e\u0439 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0435\u0439 VPN WireGuard, \u043e\u0441\u043d\u043e\u0432\u0430\u043d\u043d\u043e\u0439 \u043d\u0430 \u043a\u043e\u0434\u0435 \u043c\u043e\u0434\u0443\u043b\u044f \u044f\u0434\u0440\u0430, \u0441\u043e\u0432\u043c\u0435\u0441\u0442\u043d\u043e \u043f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u043b\u0435\u043d\u043d\u043e\u0433\u043e \u043e\u0441\u043d\u043e\u0432\u043d\u044b\u043c\u0438 \u043a\u043e\u043c\u0430\u043d\u0434\u0430\u043c\u0438 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u043e\u0432 FreeBSD \u0438 WireGuard \u043f\u0440\u0438 \u0443\u0447\u0430\u0441\u0442\u0438\u0438 \u0414\u0436\u0435\u0439\u0441\u043e\u043d\u0430 \u0414\u043e\u043d\u0435\u043d\u0444\u0438\u043b\u0434\u0430 (Jason A. Donenfeld), \u0430\u0432\u0442\u043e\u0440\u0430 VPN WireGuard, \u0438 \u0414\u0436\u043e\u043d\u0430 \u0411\u043e\u043b\u0434\u0443\u0438\u043d\u0430 (John H. Baldwin), \u0438\u0437\u0432\u0435\u0441\u0442\u043d\u043e\u0433\u043e \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0430 GDB \u0438 FreeBSD, \u0432 \u043d\u0430\u0447\u0430\u043b\u0435 2000-\u0445 \u0433\u043e\u0434\u043e\u0432 \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u0432\u0448\u0435\u0433\u043e \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0443 SMP \u0438 NUMA […]<\/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-105412","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\udd47Do k\u00f3dov\u00e9 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