{"id":95153,"date":"2020-09-26T01:42:22","date_gmt":"2020-09-25T23:42:22","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-globalnoj-deczentralizovannoj-fajlovoj-sistemy-ipfs-0-7"},"modified":"2020-09-26T01:42:22","modified_gmt":"2020-09-25T23:42:22","slug":"vypusk-globalnoj-deczentralizovannoj-fajlovoj-sistemy-ipfs-0-7","status":"publish","type":"post","link":"https:\/\/prohoster.info\/da\/blog\/news\/vypusk-globalnoj-deczentralizovannoj-fajlovoj-sistemy-ipfs-0-7","title":{"rendered":"Udgivelsen af det globale decentrale filsystem IPFS 0.7","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Pr\u00e6senteret<\/a><\/noindex> udgivelse af et decentraliseret filsystem IPFS 0.7<\/a><\/noindex> (InterPlanetary File System), der danner et globalt versionsstyret filopbevaringssystem, udformet som et P2P-netv\u00e6rk best\u00e5ende af deltageres systemer. IPFS kombinerer ideer, der tidligere er blevet realiseret i systemer som Git, BitTorrent, Kademlia, SFS og Web, og minder om en enkelt 's\u00e6d' BitTorrent (peer-to-peer der deltager i deling), der udveksler Git-objekter. IPFS adskiller sig ved indholds-adressering fremfor placeringsadressering og vilk\u00e5rlige navne. Koden til referenceimplementeringen er skrevet i Go og distribueres<\/a><\/noindex> under licenserne Apache 2.0 og MIT.<\/p>\n

I den nye version er transport deaktiveret som standard SECIO<\/a><\/noindex>, som i den tidligere version blev tilbudt som transport NOISE<\/a><\/noindex>, baseret<\/a><\/noindex> protokollen Noise<\/a><\/noindex> og udviklet inden for det modul\u00e6re netv\u00e6rksstak til P2P-applikationer libp2p<\/a><\/noindex>. TLSv1.3 er bevaret som en sikkerhedstransport. Administratorer af noder, der bruger gamle versioner af IPFS (Go IPFS < 0.5 eller JS IPFS < 0.47) anbefales at opdatere softwaren for at undg\u00e5 pr\u00e6stationsfald.<\/p>\n

I den nye version er der ogs\u00e5 sket en overgang til brugen af ed25519 n\u00f8gler som standard i stedet for RSA. Underst\u00f8ttelse af gamle RSA-n\u00f8gler er bevaret, men nye n\u00f8gler vil nu blive genereret ved hj\u00e6lp af ed25519 algoritmen. Brug af indbyggede ed25519 offentlige n\u00f8gler l\u00f8ser problemaet med opbevaring af offentlige n\u00f8gler; for eksempel kr\u00e6ver verifikation af underskrevne data med ed25519 kun information om PeerId. N\u00f8gle-navne i IPNS-stier er nu kodet med base36 CIDv1 algoritmen i stedet for base58btc.<\/p>\n

Udover \u00e6ndringen af standardn\u00f8gler i IPFS 0.7 er muligheden for rotation af identifikationsn\u00f8gler blevet tilf\u00f8jet. For at \u00e6ndre nodens n\u00f8gle kan man nu udf\u00f8re kommandoen \u00abipfs key rotate\u00bb. Derudover er der tilf\u00f8jet nye kommandoer til import og eksport af n\u00f8gler (\u00abipfs key import\u00bb og \u00abipfs key export\u00bb), som kan anvendes til backup, samt kommandoen \u00abipfs dag stat\u00bb til at vise statistik om DAG (Distributed Acyclic Graphs).<\/p>\n

Lad os minde om, at i IPFS er linket til at f\u00e5 adgang til en fil direkte relateret til dens indhold og inkluderer en kryptografisk hash af indholdet. Filens adresse kan ikke omd\u00f8bes vilk\u00e5rligt; den kan kun \u00e6ndres efter en \u00e6ndring af indholdet. Ligeledes kan filen ikke \u00e6ndres uden at \u00e6ndre adressen (den gamle version forbliver p\u00e5 den gamle adresse, mens den nye vil v\u00e6re tilg\u00e6ngelig via en anden adresse, da hash'en af filens indhold vil \u00e6ndre sig). Da filens identifikator \u00e6ndrer sig ved hver \u00e6ndring, tilbydes tjenester til at binde permanente adresser, som tager h\u00f8je for forskellige versioner af filen (IPNS<\/a><\/noindex>), eller til at fasts\u00e6tte et alias analogt med traditionelle FS og DNS (MFS<\/a><\/noindex> (Mutable File System) og DNSLink<\/a><\/noindex>). <\/p>\n

P\u00e5 lignende m\u00e5de som BitTorrent gemmes dataene direkte p\u00e5 deltagernes systemer, som udveksler informationer i P2P-tilstand, uden binding til centraliserede noder. N\u00e5r det er n\u00f8dvendigt at f\u00e5 en fil med bestemt indhold, finder systemet deltagere, der har denne fil og leverer den fra deres systemer i dele i flere str\u00f8mme. Efter at have downloadet filen til sit system bliver deltagere automatisk en af punkterne for distribution af den. For at bestemme deltagerne i netv\u00e6rket, hvor der er tilg\u00e6ngeligt indhold, kun 14,3% af webstederne i hele verden.<\/a><\/noindex> distribueret hashtabel (DHT<\/a><\/noindex>). For at f\u00e5 adgang til den globale FS kan IPFS bruge HTTP-protokollen eller monteres som et virtuelt FS \/ipfs ved hj\u00e6lp af FUSE-modulet. <\/p>\n

IPFS hj\u00e6lper med at l\u00f8se opgaver som p\u00e5lidelig lagring (hvis den oprindelige lagring svigter, kan filen hentes fra andre brugeres systemer), modstand mod censur af indhold (for at blokere kr\u00e6ves det at blokere alle systemer, hvor der er en kopi af dataene), og organisering af adgang uden direkte internetforbindelse eller ved d\u00e5rlig kvalitet af forbindelsen (data kan hentes via de n\u00e6rmeste deltagere i det lokale netv\u00e6rk). Udover lagring af filer og dataudveksling kan IPFS bruges som grundlag for at skabe nye tjenester, eksempelvis til oprettelse af hjemmesider, der ikke er bundet til servere, eller til at skabe distribuerede applikationer<\/a><\/noindex>.<\/p>\n

\"Udgivelsen<\/a><\/noindex><\/center><\/p>\n

<\/a><\/noindex><\/p>\n

Kilde: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u0432\u044b\u043f\u0443\u0441\u043a \u0434\u0435\u0446\u0435\u043d\u0442\u0440\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d\u043d\u043e\u0439 \u0444\u0430\u0439\u043b\u043e\u0432\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b IPFS 0.7 (InterPlanetary File System), \u043e\u0431\u0440\u0430\u0437\u0443\u044e\u0449\u0435\u0439 \u0433\u043b\u043e\u0431\u0430\u043b\u044c\u043d\u043e\u0435 \u0432\u0435\u0440\u0441\u0438\u043e\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0435 \u0445\u0440\u0430\u043d\u0438\u043b\u0438\u0449\u0435 \u0444\u0430\u0439\u043b\u043e\u0432, \u0440\u0430\u0437\u0432\u0451\u0440\u043d\u0443\u0442\u043e\u0435 \u0432 \u0444\u043e\u0440\u043c\u0435 P2P-\u0441\u0435\u0442\u0438, \u043e\u0431\u0440\u0430\u0437\u043e\u0432\u0430\u043d\u043d\u043e\u0439 \u0438\u0437 \u0441\u0438\u0441\u0442\u0435\u043c \u0443\u0447\u0430\u0441\u0442\u043d\u0438\u043a\u043e\u0432. IPFS \u043a\u043e\u043c\u0431\u0438\u043d\u0438\u0440\u0443\u0435\u0442 \u0438\u0434\u0435\u0438, \u0440\u0430\u043d\u0435\u0435 \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d\u043d\u044b\u0435 \u0432 \u0442\u0430\u043a\u0438\u0445 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u0445, \u043a\u0430\u043a Git, BitTorrent, Kademlia, SFS \u0438 Web, \u0438 \u043d\u0430\u043f\u043e\u043c\u0438\u043d\u0430\u0435\u0442 \u0435\u0434\u0438\u043d\u044b\u0439 «\u0440\u043e\u0439» BitTorrent (\u043f\u0438\u0440\u044b, \u0443\u0447\u0430\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0435 \u0432 \u0440\u0430\u0437\u0434\u0430\u0447\u0435), \u043e\u0431\u043c\u0435\u043d\u0438\u0432\u0430\u044e\u0449\u0438\u0439\u0441\u044f Git-\u043e\u0431\u044a\u0435\u043a\u0442\u0430\u043c\u0438. 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