{"id":114774,"date":"2024-04-04T00:25:53","date_gmt":"2024-04-03T22:25:54","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-web-brauzera-ceno-2-1-ispolzuyushhego-p2p-set-dlya-dostupa-k-sajtam"},"modified":"2024-04-04T00:25:53","modified_gmt":"2024-04-03T22:25:54","slug":"vypusk-web-brauzera-ceno-2-1-ispolzuyushhego-p2p-set-dlya-dostupa-k-sajtam","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/vypusk-web-brauzera-ceno-2-1-ispolzuyushhego-p2p-set-dlya-dostupa-k-sajtam","title":{"rendered":"Vyd\u00e1n\u00ed webov\u00e9ho prohl\u00ed\u017ee\u010de CENO 2.1, kter\u00fd pou\u017e\u00edv\u00e1 P2P s\u00ed\u0165 pro p\u0159\u00edstup na webov\u00e9 str\u00e1nky.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Po roce v\u00fdvoje byl zve\u0159ejn\u011bn vyd\u00e1n\u00ed mobiln\u00edho webov\u00e9ho prohl\u00ed\u017ee\u010de CENO 2.1.0, ur\u010den\u00e9ho pro zaji\u0161t\u011bn\u00ed p\u0159\u00edstupu k informac\u00edm v situac\u00edch, kdy nen\u00ed mo\u017en\u00fd p\u0159\u00edm\u00fd p\u0159\u00edstup k informac\u00edm, nap\u0159\u00edklad p\u0159i odpojen\u00ed segment\u016f internetu od glob\u00e1ln\u00ed s\u00edt\u011b v d\u016fsledku v\u00fdpadk\u016f nebo \u010din\u016f zlo\u010dinc\u016f. Prohl\u00ed\u017ee\u010d je postaven na z\u00e1klad\u011b enginu GeckoView (pou\u017e\u00edvan\u00e9ho ve Firefoxu pro Android), roz\u0161\u00ed\u0159en\u00e9ho o mo\u017enost v\u00fdm\u011bny dat p\u0159es decentralizovanou P2P s\u00ed\u0165, ve kter\u00e9 u\u017eivatel\u00e9 zaji\u0161\u0165uj\u00ed p\u0159esm\u011brov\u00e1n\u00ed provozu k extern\u00edm br\u00e1n\u00e1m, kter\u00e9 poskytuj\u00ed p\u0159\u00edstup k informac\u00edm. V\u00fdstupy projektu jsou distribuov\u00e1ny pod licenc\u00ed MIT. Hotov\u00e9 verze jsou dostupn\u00e9 v Google Play. <\/p>\n

Funk\u010dnost P2P byla vy\u010dlen\u011bna do samostatn\u00e9 knihovny Ouinet, kter\u00e1 m\u016f\u017ee b\u00fdt pou\u017eita v libovoln\u00fdch aplikac\u00edch. Prohl\u00ed\u017ee\u010d CENO a knihovna Ouinet umo\u017e\u0148uj\u00ed p\u0159\u00edstup k informac\u00edm i v situac\u00edch a\u017e po \u00fapln\u00e9m v\u00fdpadku internetu, nap\u0159\u00edklad v d\u016fsledku glob\u00e1ln\u00edch poruch. V tomto p\u0159\u00edpad\u011b m\u016f\u017ee b\u00fdt obsah distribuov\u00e1n z cache nebo m\u00edstn\u00edch \u00falo\u017ei\u0161\u0165. <\/p>\n

Projekt vyu\u017e\u00edv\u00e1 caching obsahu na stran\u011b ka\u017ed\u00e9ho u\u017eivatele s udr\u017eov\u00e1n\u00edm decentralizovan\u00e9ho cache popul\u00e1rn\u00edho obsahu. P\u0159i otev\u0159en\u00ed webov\u00e9 str\u00e1nky u\u017eivatelem se sta\u017een\u00fd obsah ukl\u00e1d\u00e1 do m\u00edstn\u00edho syst\u00e9mu a st\u00e1v\u00e1 se dostupn\u00fdm \u00fa\u010dastn\u00edk\u016fm P2P s\u00edt\u011b, kte\u0159\u00ed nemohou z\u00edskat p\u0159\u00edm\u00fd p\u0159\u00edstup k dan\u00e9mu zdroji nebo k br\u00e1n\u00e1m. Na ka\u017ed\u00e9m za\u0159\u00edzen\u00ed jsou uchov\u00e1v\u00e1ny pouze data, kter\u00e1 byla p\u0159\u00edmo po\u017eadov\u00e1na z tohoto za\u0159\u00edzen\u00ed. Identifikace cacheovan\u00fdch str\u00e1nek se prov\u00e1d\u00ed pomoc\u00ed hashe z URL. V\u0161echny souvisej\u00edc\u00ed dal\u0161\u00ed \u00fadaje, jako jsou obr\u00e1zky, skripty a styly, jsou seskupeny a odes\u00edl\u00e1ny spole\u010dn\u011b pod jedn\u00edm identifik\u00e1torem. <\/p>\n

Pro p\u0159\u00edstup k nov\u00e9mu obsahu, k n\u011bmu\u017e nen\u00ed mo\u017en\u00fd p\u0159\u00edm\u00fd p\u0159\u00edstup, se pou\u017e\u00edvaj\u00ed speci\u00e1ln\u00ed proxy br\u00e1ny (injector), kter\u00e9 jsou um\u00edst\u011bny v extern\u00edch nepo\u0161kozen\u00fdch \u010d\u00e1stech s\u00edt\u011b, kde z\u016fst\u00e1v\u00e1 mo\u017enost nav\u00e1z\u00e1n\u00ed spojen\u00ed. Informace mezi klientem a branou jsou \u0161ifrov\u00e1ny pomoc\u00ed \u0161ifrov\u00e1n\u00ed zalo\u017een\u00e9ho na ve\u0159ejn\u00fdch kl\u00ed\u010d\u00edch. Pro identifikaci bran a prevenci nasazen\u00ed \u0161kodliv\u00fdch bran se pou\u017e\u00edvaj\u00ed digit\u00e1ln\u00ed podpisy, a kl\u00ed\u010de projektem podporovan\u00fdch bran jsou sou\u010d\u00e1st\u00ed dod\u00e1vky prohl\u00ed\u017ee\u010de. <\/p>\n

Pro p\u0159\u00edstup k br\u00e1n\u011b v podm\u00ednk\u00e1ch jej\u00ed p\u0159\u00edm\u00e9 nedostupnosti je podporov\u00e1no p\u0159ipojen\u00ed prost\u0159ednictv\u00edm \u0159et\u011bzce jin\u00fdch u\u017eivatel\u016f, kte\u0159\u00ed funguj\u00ed jako proxy pro p\u0159esm\u011brov\u00e1n\u00ed provozu k br\u00e1n\u011b (data jsou \u0161ifrov\u00e1na kl\u00ed\u010dem br\u00e1ny, co\u017e zabr\u00e1n\u00ed tranzitn\u00edm u\u017eivatel\u016fm, p\u0159es jejich\u017e syst\u00e9my se dotaz pos\u00edl\u00e1, v zasahov\u00e1n\u00ed do provozu nebo ur\u010dov\u00e1n\u00ed obsahu). Klientsk\u00e9 syst\u00e9my neodes\u00edlaj\u00ed extern\u00ed dotazy jm\u00e9nem jin\u00fdch u\u017eivatel\u016f, ale bu\u010f vracej\u00ed data z cache nebo slou\u017e\u00ed jako spojen\u00ed pro z\u0159\u00edzen\u00ed tunelu k proxy-br\u00e1n\u011b. <\/p>\n

B\u011b\u017en\u00e9 dotazy se nejprve pokou\u0161\u00ed prohl\u00ed\u017ee\u010d doru\u010dit p\u0159\u00edmo, a pokud p\u0159\u00edm\u00fd dotaz neprojde \u2014 provede vyhled\u00e1v\u00e1n\u00ed v distribuovan\u00e9 cache. Pokud v cache nen\u00ed URL, informace se po\u017eaduje p\u0159es p\u0159ipojen\u00ed k proxy br\u00e1n\u011b nebo p\u0159\u00edstupem k br\u00e1n\u011b p\u0159es jin\u00e9ho u\u017eivatele. D\u016fv\u011brn\u00e9 \u00fadaje, jako jsou cookies, se v cache neukl\u00e1daj\u00ed. <\/p>\n

\"Vyd\u00e1n\u00ed<\/center> <\/p>\n

Ka\u017ed\u00fd syst\u00e9m v P2P s\u00edti je vybaven vnit\u0159n\u00edm identifik\u00e1torem, kter\u00fd se pou\u017e\u00edv\u00e1 p\u0159i sm\u011brov\u00e1n\u00ed v P2P s\u00edti, ale nen\u00ed spojen s fyzickou polohou u\u017eivatele. Autenticita p\u0159en\u00e1\u0161en\u00fdch a v cache ulo\u017een\u00fdch informac\u00ed je zaji\u0161t\u011bna pou\u017eit\u00edm digit\u00e1ln\u00edch podpis\u016f (Ed25519). P\u0159en\u00e1\u0161en\u00fd provoz je \u0161ifrov\u00e1n pomoc\u00ed TLS. Pro p\u0159\u00edstup k informac\u00edm o struktu\u0159e s\u00edt\u011b, \u00fa\u010dastn\u00edc\u00edch a vyrovnan\u00e9m obsahu se pou\u017e\u00edv\u00e1 distribuovan\u00e1 hash tabulka (DHT). Pokud je to nutn\u00e9, krom\u011b HTTP mohou b\u00fdt jako transport tak\u00e9 pou\u017eity \u03bcTP nebo Tor. <\/p>\n

V tomto p\u0159\u00edpad\u011b CENO nezaji\u0161\u0165uje anonymitu a informace o odes\u00edlan\u00fdch dotazech jsou dostupn\u00e9 pro anal\u00fdzu na za\u0159\u00edzen\u00edch \u00fa\u010dastn\u00edk\u016f (nap\u0159\u00edklad podle hash lze zjistit, \u017ee u\u017eivatel nav\u0161t\u00edvil ur\u010ditou str\u00e1nku). Pro d\u016fv\u011brn\u00e9 dotazy, nap\u0159\u00edklad vy\u017eaduj\u00edc\u00ed p\u0159ipojen\u00ed k vlastn\u00edmu \u00fa\u010dtu v e-mailu a soci\u00e1ln\u00edch s\u00edt\u00edch, se doporu\u010duje pou\u017e\u00edt samostatnou soukromou kartu, p\u0159i jej\u00edm\u017e pou\u017eit\u00ed se data dotazuj\u00ed pouze p\u0159\u00edmo nebo prost\u0159ednictv\u00edm proxy-br\u00e1ny, ale bez dotazov\u00e1n\u00ed na cache a bez ukl\u00e1d\u00e1n\u00ed do cache. <\/p>\n

Mezi zm\u011bnami v nov\u00e9m vyd\u00e1n\u00ed: <\/p>\n