{"id":110319,"date":"2023-09-25T14:03:21","date_gmt":"2023-09-25T12:03:21","guid":{"rendered":"https:\/\/prohoster.info\/?p=110319"},"modified":"2023-09-25T14:03:21","modified_gmt":"2023-09-25T12:03:21","slug":"opublikovana-p2p-platforma-gnunet-0-20","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hr\/blog\/news\/opublikovana-p2p-platforma-gnunet-0-20","title":{"rendered":"Objavljena P2P platforma GNUnet 0.20","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Predstavljen je izdanak okvira GNUnet 0.20, namijenjenog za izgradnju sigurnih decentraliziranih P2P mre\u017ea. Mre\u017ee koje se stvaraju uz pomo\u0107 GNUnet nemaju jedinstvenu to\u010dku kvara i sposobne su garantirati privatnost informacija korisnika, uklju\u010duju\u0107i isklju\u010divanje mogu\u0107ih zloupotreba od strane obavje\u0161tajnih slu\u017ebi i administratora koji imaju pristup \u010dvorovima mre\u017ee.       <\/p>\n<p>GNUnet podr\u017eava stvaranje P2P mre\u017ea preko TCP, UDP, HTTP\/HTTPS, Bluetooth i WLAN, mo\u017ee raditi u F2F (Friend-to-friend) modu. Podr\u017eano je zaobila\u017eenje NAT-a, uklju\u010duju\u0107i UPnP i ICMP. Za adresiranje pohrane podataka mogu\u0107e je kori\u0161tenje distribuirane hash tablice (DHT). Osigurana su sredstva za implementaciju mesh mre\u017ea. Za selektivno davanje i povla\u010denje prava pristupa koristi se servis decentralizirane razmjene identifikacijskih atributa reclaimID, koji koristi GNS (GNU Name System) i enkripciju temeljenom na atributima (Attribute-Based Encryption).    <\/p>\n<p>Sustav se odlikuje niskom potro\u0161njom resursa i kori\u0161tenjem vi\u0161eprocesne arhitekture za osiguranje izolacije izme\u0111u komponenti. Osigurana su fleksibilna sredstva za vo\u0111enje evidencije i skupljanje statistike. Za razvoj krajnjih aplikacija GNUnet pru\u017ea API za C i bindinge za druge programske jezike. Kako bi se pojednostavio razvoj, umjesto niti predla\u017ee se kori\u0161tenje petlji doga\u0111aja (event loop) i procesa. Uklju\u010dena je testna knji\u017enica za automatsko implementiranje eksperimentalnih mre\u017ea koje obuhva\u0107aju desetke tisu\u0107a \u010dvorova.         <\/p>\n<p>Na temelju tehnologija GNUnet razvija se nekoliko gotovih aplikacija:   <\/p>\n<ul>\n<li class=\"l\"> Sustav domenih imena GNS (GNU Name System) slu\u017ei kao potpuno decentralizirana i cenzuri otporna alternativa DNS-u. GNS se mo\u017ee koristiti uz DNS i u tradicijskim aplikacijama poput web preglednika. Za razliku od DNS-a, GNS koristi usmjereni graf umjesto hijerarhije poslu\u017eitelja. Pretvorba imena sli\u010di DNS-u, ali zahtjevi i odgovori se izvode uz o\u010duvanje privatnosti \u2014 \u010dvor koji obra\u0111uje zahtjev ne zna kome se \u0161alje odgovor, a tranzitni \u010dvorovi i tre\u0107e strane ne mogu de\u0161ifrirati zahtjeve i odgovore. Cjelovitost i nepromjenjivost zapisa osigurana je kori\u0161tenjem kriptografskih mehanizama. DNS zona u GNS-u definira se pomo\u0107u para javnog i privatnog klju\u010da ECDSA temeljenog na elipti\u010dnim krivuljama Curve25519.                   <\/li>\n<li class=\"l\"> Servis za anonimnu razmjenu datoteka, koji ne dopu\u0161ta analizu informacija zahvaljuju\u0107i prijenosu podataka isklju\u010divo u \u0161ifriranom obliku i ne omogu\u0107uje pra\u0107enje tko je postavio, tra\u017eio ili preuzeo datoteke, zahvaljuju\u0107i kori\u0161tenju protokola GAP.                 <\/li>\n<li class=\"l\"> Sustav <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/hr\/vpn\/\"   title=\"VPN\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"170\">VPN<\/a> za stvaranje skrivenih servisa unutar domene \u00ab.gnu\u00bb i preusmjeravanje tunela IPv4 i IPv6 preko P2P mre\u017ee. Dodatno se podr\u017eavaju sheme prevo\u0111enja IPv4-u-u-IPv6 i IPv6-u-u-IPv4, kao i stvaranje tunela IPv4-iznad-IPv6 i IPv6-iznad-IPv4.      <\/li>\n<li class=\"l\"> Servis GNUnet Conversation za upu\u0107ivanje glasovnih poziva preko GNUneta. Za identifikaciju korisnika koristi se GNS, a sadr\u017eaj glasovnog prometa prenosi se u \u0161ifriranom obliku. Anonimnost trenutno nije dostupna \u2014 drugi \u010dvorovi mogu pratiti vezu izme\u0111u dva korisnika i odrediti njihove identitete. <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/hr\/lir\/ipv4\/\"   title=\"IP adrese\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"684\">IP adrese<\/a>.  <\/li>\n<li class=\"l\"> Platforma za izgradnju decentraliziranih dru\u0161tvenih mre\u017ea Secushare, koja koristi PSYC protokol i podr\u017eava distribuiranje obavijesti u multicast na\u010dinu uz primjenu end-to-end \u0161ifriranja kako bi samo autorizirani korisnici (oni kojima poruke nisu upu\u0107ene, uklju\u010duju\u0107i administratore \u010dvorova, ne mogu ih pro\u010ditati) mogli pristupiti porukama, datotekama, chatovima i raspravama;    <\/li>\n<li class=\"l\"> Sustav za organizaciju \u0161ifrirane e-po\u0161te pretty Easy privacy, koji koristi GNUnet za za\u0161titu metapodataka i podr\u017eava razli\u010dite kriptografske protokole za verifikaciju klju\u010deva;    <\/li>\n<li class=\"l\"> GNU Taler je sustav pla\u0107anja koji pru\u017ea anonimnost kupcima, ali prati transakcije prodava\u010da radi osiguravanja transparentnosti i pru\u017eanja poreznih izvje\u0161taja. Podr\u017eava rad s razli\u010ditim postoje\u0107im valutama i elektroni\u010dkim novcem, uklju\u010duju\u0107i dolare, eure i bitcoine.\n<li class=\"l\"> Servis GNUnet Messenger za stvaranje sigurnih aplikacija za chat. Za osiguranje povjerljivosti i za\u0161titu od presretanja poruka primjenjuje se protokol CADET (Confidential Ad-hoc Decentralized End-to-End Transport), koji omogu\u0107ava potpuno decentraliziranu interakciju izme\u0111u grupe korisnika koriste\u0107i end-to-end \u0161ifriranje prenesenih podataka.     <\/li>\n<\/ul>\n<p>U novoj verziji GNUnet napravljene su promjene koje naru\u0161avaju kompatibilnost protokola i dovode do mogu\u0107ih problema prilikom interakcije \u010dvorova na bazi GNUnet 0.20 i starih izdanja. U biblioteku libgnuneutil prenesene su funkcije GNUNET_STRINGS_get_suffix_from_binary_name i GNUNET_s. Dodane su funkcije GNUNET_JSON_spec_object_const, GNUNET_JSON_spec_array_const, GNUNET_PQ_get_oid_by_name i GNUNET_PQ_get_oid. Dodan je API KEM (Key Encapsulation Mechanism).<br \/>\n<br \/>Izvor: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=59811\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u0432\u044b\u043f\u0443\u0441\u043a \u0444\u0440\u0435\u0439\u043c\u0432\u043e\u0440\u043a\u0430 GNUnet 0.20, \u043f\u0440\u0435\u0434\u043d\u0430\u0437\u043d\u0430\u0447\u0435\u043d\u043d\u043e\u0433\u043e \u0434\u043b\u044f \u043f\u043e\u0441\u0442\u0440\u043e\u0435\u043d\u0438\u044f \u0437\u0430\u0449\u0438\u0449\u0451\u043d\u043d\u044b\u0445 \u0434\u0435\u0446\u0435\u043d\u0442\u0440\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d\u043d\u044b\u0445 P2P-\u0441\u0435\u0442\u0435\u0439. \u0421\u043e\u0437\u0434\u0430\u0432\u0430\u0435\u043c\u044b\u0435 \u043f\u0440\u0438 \u043f\u043e\u043c\u043e\u0449\u0438 GNUnet \u0441\u0435\u0442\u0438 \u043d\u0435 \u0438\u043c\u0435\u044e\u0442 \u0435\u0434\u0438\u043d\u043e\u0439 \u0442\u043e\u0447\u043a\u0438 \u043e\u0442\u043a\u0430\u0437\u0430 \u0438 \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u044b \u0433\u0430\u0440\u0430\u043d\u0442\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u043d\u0435\u043f\u0440\u0438\u043a\u043e\u0441\u043d\u043e\u0432\u0435\u043d\u043d\u043e\u0441\u0442\u044c \u0447\u0430\u0441\u0442\u043d\u043e\u0439 \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u0438 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439, \u0432 \u0442\u043e\u043c \u0447\u0438\u0441\u043b\u0435 \u0438\u0441\u043a\u043b\u044e\u0447\u0438\u0442\u044c \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u044b\u0435 \u0437\u043b\u043e\u0443\u043f\u043e\u0442\u0440\u0435\u0431\u043b\u0435\u043d\u0438\u044f \u0441\u043e \u0441\u0442\u043e\u0440\u043e\u043d\u044b \u0441\u043f\u0435\u0446\u0441\u043b\u0443\u0436\u0431 \u0438 \u0430\u0434\u043c\u0438\u043d\u0438\u0441\u0442\u0440\u0430\u0442\u043e\u0440\u043e\u0432, \u0438\u043c\u0435\u044e\u0449\u0438\u0445 \u0434\u043e\u0441\u0442\u0443\u043f \u043a \u0443\u0437\u043b\u0430\u043c \u0441\u0435\u0442\u0438. GNUnet \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u0442 \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u0435 P2P-\u0441\u0435\u0442\u0435\u0439 \u043f\u043e\u0432\u0435\u0440\u0445 TCP, UDP, HTTP\/HTTPS, Bluetooth \u0438 WLAN, [&hellip;]<\/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-110319","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u0432\u044b\u043f\u0443\u0441\u043a \u0444\u0440\u0435\u0439\u043c\u0432\u043e\u0440\u043a\u0430 GNUnet 0.20, 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