{"id":104097,"date":"2022-05-20T15:36:43","date_gmt":"2022-05-20T13:36:45","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/google-otkryl-narabotki-svyazannye-s-zashhishhyonnym-setevym-protokolom-psp"},"modified":"2022-05-20T15:36:43","modified_gmt":"2022-05-20T13:36:45","slug":"google-otkryl-narabotki-svyazannye-s-zashhishhyonnym-setevym-protokolom-psp","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/google-otkryl-narabotki-svyazannye-s-zashhishhyonnym-setevym-protokolom-psp","title":{"rendered":"A Google megnyitotta a PSP-vel kapcsolatos fejleszt\u00e9seit","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>A Google bejelentette a PSP (PSP Security Protocol) protokoll specifik\u00e1ci\u00f3inak \u00e9s referenciav\u00e1ltozat\u00e1nak k\u00f6zz\u00e9t\u00e9tel\u00e9t, amelyet az adatk\u00f6zpontok k\u00f6z\u00f6tti forgalom titkos\u00edt\u00e1s\u00e1ra haszn\u00e1lnak. A protokoll hasonl\u00f3 az IPsec ESP (Encapsulating Security Payloads) architekt\u00far\u00e1hoz, amely a forgalom IP f\u00f6l\u00f6tti kapszul\u00e1z\u00e1s\u00e1t biztos\u00edtja, titkos\u00edt\u00e1st, kriptogr\u00e1fiai integrit\u00e1s-ellen\u0151rz\u00e9st \u00e9s forr\u00e1s-igazol\u00e1st ny\u00fajtva. A PSP megval\u00f3s\u00edt\u00f3 k\u00f3dja C nyelven \u00edr\u00f3dott, \u00e9s Apache 2.0 licenc alatt terjesztik.    <\/p>\n<p>A PSP jellemz\u0151je a protokoll optimaliz\u00e1l\u00e1sa a sz\u00e1m\u00edt\u00e1si teljes\u00edtm\u00e9ny felgyors\u00edt\u00e1sa \u00e9s a k\u00f6zponti feldolgoz\u00f3egys\u00e9g terhel\u00e9s\u00e9nek cs\u00f6kkent\u00e9se \u00e9rdek\u00e9ben a titkos\u00edt\u00e1si \u00e9s visszafejt\u00e9si m\u0171veletek h\u00e1l\u00f3zati k\u00e1rty\u00e1kra t\u00f6rt\u00e9n\u0151 \u00e1thelyez\u00e9s\u00e9vel (offload). A hardveres gyors\u00edt\u00e1shoz speci\u00e1lis, PSP-vel kompatibilis h\u00e1l\u00f3zati k\u00e1rty\u00e1kra van sz\u00fcks\u00e9g. Azok sz\u00e1m\u00e1ra, akik nem t\u00e1mogatj\u00e1k a PSP-t, a SoftPSP szoftveres megval\u00f3s\u00edt\u00e1st k\u00edn\u00e1l.   <\/p>\n<p>Az adatok tov\u00e1bb\u00edt\u00e1s\u00e1hoz UDP protokollt haszn\u00e1lnak. A PSP csomag egy IP fejl\u00e9cvel kezd\u0151dik, amelyet egy UDP fejl\u00e9c k\u00f6vet, majd pedig a PSP saj\u00e1t fejl\u00e9c\u00e9vel, amely tartalmazza a titkos\u00edt\u00e1ssal \u00e9s hiteles\u00edt\u00e9ssel kapcsolatos inform\u00e1ci\u00f3kat. Ezt k\u00f6veti az eredeti TCP\/UDP csomag tartalma, amelyet a v\u00e9gs\u0151 PSP blokk z\u00e1r le, amely tartalmazza az integrit\u00e1s ellen\u0151rz\u00e9s\u00e9nek ellen\u0151rz\u0151 \u00f6sszeg\u00e9t. A PSP fejl\u00e9c, valamint a kapszul\u00e1zott csomag fejl\u00e9c \u00e9s adatok mindig hiteles\u00edtve vannak a csomag hiteless\u00e9g\u00e9nek meger\u0151s\u00edt\u00e9se \u00e9rdek\u00e9ben. A kapszul\u00e1zott csomag adatai titkos\u00edthat\u00f3k, emellett lehet\u0151s\u00e9g van a titkos\u00edt\u00e1s szelekt\u00edv alkalmaz\u00e1s\u00e1ra is, amely megengedi, hogy a TCP fejl\u00e9c egy r\u00e9sze nyitva maradjon (a hiteless\u00e9g ellen\u0151rz\u00e9s\u00e9nek meg\u0151rz\u00e9s\u00e9vel), p\u00e9ld\u00e1ul a csomagok \u00e1tvizsg\u00e1l\u00e1s\u00e1nak lehet\u0151v\u00e9 t\u00e9tele \u00e9rdek\u00e9ben az \u00e1tmeneti h\u00e1l\u00f3zati eszk\u00f6z\u00f6k\u00f6n.    <center><img decoding=\"async\" alt=\"A Google megnyitotta a PSP-vel kapcsolatos fejleszt\u00e9seit\" src=\"\/wp-content\/uploads\/2022\/05\/5d23ea803e336609bc8056d9f88b2df8.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/center>        <\/p>\n<p>A PSP nem k\u00f6t\u0151dik egy adott kulcscsere protokollhoz, hanem t\u00f6bb csomagform\u00e1tumot k\u00edn\u00e1l, \u00e9s t\u00e1mogatja k\u00fcl\u00f6nb\u00f6z\u0151 kriptogr\u00e1fiai algoritmusok haszn\u00e1lat\u00e1t. P\u00e9ld\u00e1ul t\u00e1mogatja az AES-GCM algoritmust az adatok titkos\u00edt\u00e1s\u00e1hoz \u00e9s az autentik\u00e1ci\u00f3hoz, valamint az AES-GMAC-ot az adatok titkos\u00edt\u00e1sa n\u00e9lk\u00fcli hiteles\u00edt\u00e9shez, p\u00e9ld\u00e1ul amikor az adatok nem \u00e9rt\u00e9kesek, de garant\u00e1lni kell, hogy azokat nem m\u00f3dos\u00edtott\u00e1k a tov\u00e1bb\u00edt\u00e1s sor\u00e1n, \u00e9s azok pontosan azok, amelyeket eredetileg elk\u00fcldtek.      <\/p>\n<p>A szok\u00e1sos <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/hu\/vpn\/\"   title=\"VPN\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"211\">VPN<\/a>-protokollokkal ellent\u00e9tben a PSP titkos\u00edt\u00e1st alkalmaz az egyes h\u00e1l\u00f3zati kapcsolatok szintj\u00e9n, nem pedig az eg\u00e9sz kommunik\u00e1ci\u00f3s csatorna szintj\u00e9n, azaz a PSP k\u00fcl\u00f6nb\u00f6z\u0151 titkos\u00edt\u00e1si kulcsokat haszn\u00e1l az elt\u00e9r\u0151 alag\u00fatba helyezett UDP- \u00e9s TCP-kapcsolatokhoz. Ez a megk\u00f6zel\u00edt\u00e9s lehet\u0151v\u00e9 teszi a forgalom szigor\u00fabb elszigetel\u00e9s\u00e9t k\u00fcl\u00f6nb\u00f6z\u0151 alkalmaz\u00e1sok \u00e9s feldolgoz\u00f3k k\u00f6z\u00f6tt, ami relev\u00e1ns, ha egy <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/hu\/server\/dts-newyork\/\"   title=\"szerveren\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2710\">szerveren<\/a> felhaszn\u00e1l\u00f3k k\u00fcl\u00f6nb\u00f6z\u0151 alkalmaz\u00e1sait \u00e9s szolg\u00e1ltat\u00e1sait futtatj\u00e1k.    <\/p>\n<p>A Google-n\u00e9l a PSP protokollt nemcsak a saj\u00e1t bels\u0151 kommunik\u00e1ci\u00f3k v\u00e9delm\u00e9re, hanem a Google Cloud \u00fcgyfeleinek forgalm\u00e1nak v\u00e9delm\u00e9re is alkalmazz\u00e1k. A protokoll alapvet\u0151en hat\u00e9kony m\u0171k\u00f6d\u00e9sre lett tervezve a Google szint\u0171 infrastrukt\u00far\u00e1kban, \u00e9s biztos\u00edtania kell a titkos\u00edt\u00e1s hardveres gyors\u00edt\u00e1s\u00e1t olyan k\u00f6rnyezetekben, ahol milli\u00f3k akt\u00edv h\u00e1l\u00f3zati kapcsolat\u00e1nak kezel\u00e9se \u00e9s sz\u00e1zezer \u00faj kapcsolat m\u00e1sodpercenk\u00e9nti fel\u00e9p\u00edt\u00e9se zajlik.      <\/p>\n<p>K\u00e9t \u00fczemm\u00f3d t\u00e1mogatott - a \"stateful\" \u00e9s a \"stateless\". A \"stateless\" m\u00f3dban a titkos\u00edt\u00e1shoz sz\u00fcks\u00e9ges kulcsok a h\u00e1l\u00f3zati k\u00e1rty\u00e1nak ker\u00fclnek \u00e1tad\u00e1sra a csomagfejl\u00e9cre, m\u00edg a dek\u00f3dol\u00e1shoz az SPI (Security Parameter Index) mez\u0151b\u0151l ker\u00fclnek kiolvas\u00e1sra a csomagban a mesterkulcs (256-bites AES, amely a h\u00e1l\u00f3zati k\u00e1rtya mem\u00f3ri\u00e1j\u00e1ban t\u00e1rol\u00f3dik, \u00e9s 24 \u00f3r\u00e1nk\u00e9nt cser\u00e9l\u0151dik) seg\u00edts\u00e9g\u00e9vel, ami lehet\u0151v\u00e9 teszi a h\u00e1l\u00f3zati k\u00e1rtya mem\u00f3riahaszn\u00e1lat\u00e1nak cs\u00f6kkent\u00e9s\u00e9t \u00e9s a titkos\u00edtott kapcsolatok \u00e1llapot\u00e1nak minim\u00e1lis inform\u00e1ci\u00f3j\u00e1nak t\u00e1rol\u00e1s\u00e1t a hardveren. A \"stateful\" m\u00f3dban a kulcsok minden kapcsolat eset\u00e9n a h\u00e1l\u00f3zati k\u00e1rty\u00e1n egy speci\u00e1lis t\u00e1bl\u00e1zatban t\u00e1rol\u00f3dnak, hasonl\u00f3an ahhoz, ahogyan az IPsec hardveres gyors\u00edt\u00e1sa megval\u00f3sul.       <center><img decoding=\"async\" alt=\"A Google megnyitotta a PSP-vel kapcsolatos fejleszt\u00e9seit\" src=\"\/wp-content\/uploads\/2022\/05\/6f8fb33889bd2cd7746511021cb6b899.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/center>                  <\/p>\n<p>A PSP egy k\u00fcl\u00f6nleges kombin\u00e1ci\u00f3t k\u00edn\u00e1l a TLS \u00e9s az IPsec\/VPN protokollok lehet\u0151s\u00e9geib\u0151l. A TLS megfelel\u0151 volt a Google sz\u00e1m\u00e1ra az egyes kapcsolatok szintj\u00e9n t\u00f6rt\u00e9n\u0151 v\u00e9delme szempontj\u00e1b\u00f3l, de nem volt el\u00e9g rugalmas a hardveres gyors\u00edt\u00e1s t\u00e1mogat\u00e1s\u00e1ra \u00e9s nem t\u00e1mogatta az UDP-t. Az IPsec f\u00fcggetlens\u00e9get biztos\u00edtott a protokollokt\u00f3l \u00e9s j\u00f3l t\u00e1mogatta a hardveres gyors\u00edt\u00e1st, de nem t\u00e1mogatta a kulcsok egyes kapcsolatokhoz val\u00f3 k\u00f6t\u00e9s\u00e9t, csak korl\u00e1tozott sz\u00e1m\u00fa alag\u00fat l\u00e9trehoz\u00e1s\u00e1ra volt alkalmas, \u00e9s probl\u00e9m\u00e1i voltak a hardveres gyors\u00edt\u00e1s sk\u00e1l\u00e1zhat\u00f3s\u00e1g\u00e1val, mivel a titkos\u00edt\u00e1s teljes \u00e1llapot\u00e1nak t\u00e1rol\u00e1sa a h\u00e1l\u00f3zati k\u00e1rty\u00e1ban elhelyezett t\u00e1bl\u00e1zatokban (p\u00e9ld\u00e1ul 10 milli\u00f3 kapcsolat feldolgoz\u00e1s\u00e1hoz 5 GB mem\u00f3ria sz\u00fcks\u00e9ges).       <\/p>\n<p>A PSP eset\u00e9ben a titkos\u00edt\u00e1si \u00e1llapot inform\u00e1ci\u00f3i (kulcsok, inicializ\u00e1l\u00f3 vektorok, sorrend sz\u00e1mok stb.) \u00e1tkonvert\u00e1lhat\u00f3ak a TX-csomag le\u00edr\u00f3ban, vagy a host rendszer mem\u00f3ria mutat\u00f3jak\u00e9nt tov\u00e1bb\u00edthat\u00f3ak, an\u00e9lk\u00fcl, hogy a h\u00e1l\u00f3zati k\u00e1rtya mem\u00f3ri\u00e1j\u00e1t ig\u00e9nybe venn\u00e9k. A Google kor\u00e1bbi adatai szerint a RPC-forgalom titkos\u00edt\u00e1sa a c\u00e9g infrastrukt\u00far\u00e1j\u00e1ban k\u00f6r\u00fclbel\u00fcl 0,7%-\u00e1t tette ki a sz\u00e1m\u00edt\u00e1si teljes\u00edtm\u00e9nynek \u00e9s jelent\u0151s mem\u00f3ri\u00e1t ig\u00e9nyelt. A PSP bevezet\u00e9se a hardveres gyors\u00edt\u00e1s seg\u00edts\u00e9g\u00e9vel lehet\u0151v\u00e9 tette ennek a mutat\u00f3nak a cs\u00f6kkent\u00e9s\u00e9t 0,2%-ra.<br \/>\n<br \/>Forr\u00e1s: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=57220\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Google \u043e\u0431\u044a\u044f\u0432\u0438\u043b\u0430 \u043e\u0431 \u043e\u0442\u043a\u0440\u044b\u0442\u0438\u0438 \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0439 \u0438 \u044d\u0442\u0430\u043b\u043e\u043d\u043d\u043e\u0439 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 PSP (PSP Security Protocol), \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u043e\u0433\u043e \u0434\u043b\u044f \u0448\u0438\u0444\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0442\u0440\u0430\u0444\u0438\u043a\u0430 \u043c\u0435\u0436\u0434\u0443 \u0434\u0430\u0442\u0430\u0446\u0435\u043d\u0442\u0440\u0430\u043c\u0438. \u041f\u0440\u043e\u0442\u043e\u043a\u043e\u043b \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442 \u043f\u043e\u0445\u043e\u0436\u0443\u044e \u043d\u0430 IPsec ESP (Encapsulating Security Payloads) \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u0443 \u0438\u043d\u043a\u0430\u043f\u0441\u0443\u043b\u044f\u0446\u0438\u0438 \u0442\u0440\u0430\u0444\u0438\u043a\u0430 \u043f\u043e\u0432\u0435\u0440\u0445 IP, \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0438\u0432\u0430\u044f \u0448\u0438\u0444\u0440\u043e\u0432\u0430\u043d\u0438\u0435, \u043a\u0440\u0438\u043f\u0442\u043e\u0433\u0440\u0430\u0444\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u044c \u0446\u0435\u043b\u043e\u0441\u0442\u043d\u043e\u0441\u0442\u0438 \u0438 \u0430\u0443\u0442\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044e \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u0430. \u041a\u043e\u0434 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 PSP \u043d\u0430\u043f\u0438\u0441\u0430\u043d \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 \u0421\u0438 \u0438 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u0442\u0441\u044f \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 Apache 2.0. 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