{"id":35410,"date":"2019-10-31T22:04:10","date_gmt":"2019-10-31T19:04:10","guid":{"rendered":"https:\/\/prohoster.info\/blog\/cloudflare-predstavil-raspredelyonnyj-generator-sluchajnyh-chisel\/"},"modified":"2019-10-31T22:04:10","modified_gmt":"2019-10-31T19:04:10","slug":"cloudflare-predstavil-raspredelyonnyj-generator-sluchajnyh-chisel","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sl\/blog\/news\/cloudflare-predstavil-raspredelyonnyj-generator-sluchajnyh-chisel","title":{"rendered":"Cloudflare introduced a distributed random number generator","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Firma Cloudflare <noindex><a rel=\"nofollow\" href=\"https:\/\/blog.cloudflare.com\/league-of-entropy\/\">je predstavilo<\/a><\/noindex> servis <noindex><a rel=\"nofollow\" href=\"https:\/\/www.cloudflare.com\/leagueofentropy\/\">Liga Entropije<\/a><\/noindex>, za \u010dije je funkcioniranje formiran konzorcij nekoliko organizacija zainteresiranih za pru\u017eanje kvalitetnih slu\u010dajnih brojeva. Za razliku od postoje\u0107ih centraliziranih sustava, Liga Entropije se ne oslanja na jedan izvor i koristi entropiju za generiranje slu\u010dajne sekvence, <noindex><a rel=\"nofollow\" href=\"https:\/\/blog.cloudflare.com\/inside-the-entropy\/\">dobivenu<\/a><\/noindex> od nekoliko me\u0111usobno nepovezanih generatora, kojima upravljaju razli\u010diti sudionici projekta. Zbog distribuirane prirode projekta, kompromitiranje ili falsificiranje jednog ili dva izvora ne\u0107e kompromitirati kona\u010dni slu\u010dajni broj. <\/p>\n<p>Va\u017eno je napomenuti da se generirani slu\u010dajni brojevi svrstavaju u kategoriju javno dostupnih sekvenci, koje se ne mogu koristiti za generiranje kriptografskih klju\u010deva i u podru\u010djima gdje slu\u010dajni broj treba ostati tajan. Usluga je usmjerena na pru\u017eanje slu\u010dajnih brojeva koji se ne mogu unaprijed predvidjeti, ali nakon generiranja postaju javno dostupni, uklju\u010duju\u0107i za provjeru valjanosti prethodnih slu\u010dajnih vrijednosti. <\/p>\n<p>Javni slu\u010dajni brojevi generiraju se svake 60 sekundi. Svaki broj povezan je sa svojim brojem sekvence (round), preko kojeg se u bilo kojem trenutku i sa bilo kojeg servera sudionika mo\u017ee dobiti ranije generirana vrijednost. Takvi slu\u010dajni brojevi mogu se koristiti u distribuiranim sustavima, kriptovalutama i blok\u010dejnima, gdje razli\u010diti \u010dvorovi moraju imati pristup jednom generatoru slu\u010dajnih brojeva (na primjer, prilikom formiranja dokaza o radu), kao i pri vo\u0111enju raznih lutrija i za formiranje slu\u010dajnih uzoraka u procesu nadzora izbora.<\/p>\n<p>Za rad s uslugom i za implementaciju vlastitih \u010dvorova <noindex><a rel=\"nofollow\" href=\"https:\/\/developers.cloudflare.com\/randomness-beacon\/about\/\">je bil predlagan<\/a><\/noindex> alat <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/dedis\/drand\">Drand<\/a><\/noindex>, napisan na jeziku Go i isporu\u010den pod MIT licencom. Drand djeluje kao pozadinski proces koji se povezuje s vanjskim generatorima koji sudjeluju u distribuiranoj mre\u017ei i kolektivno formira sa\u017eeto slu\u010dajno vrijednost. Sa\u017eeto vrijednost generira se upotrebom metoda <noindex><a rel=\"nofollow\" href=\"https:\/\/en.wikipedia.org\/wiki\/Threshold_cryptosystem\">pragovne kriptografije<\/a><\/noindex> in <noindex><a rel=\"nofollow\" href=\"https:\/\/en.wikipedia.org\/wiki\/Pairing-based_cryptography\">bilinearnog su\u010delja<\/a><\/noindex>. Generiranje sa\u017eetog slu\u010dajnog vrijednosti mo\u017ee se izvesti na korisni\u010dkom sustavu bez uklju\u010divanja centraliziranih aggregatora.<\/p>\n<p>Drand  \u0442\u0430\u043a\u0436\u0435 \u043c\u043e\u0436\u0435\u0442 \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0442\u044c\u0441\u044f \u0434\u043b\u044f \u0434\u043e\u0441\u0442\u0430\u0432\u043a\u0438 \u043a\u043b\u0438\u0435\u043d\u0442\u0430\u043c \u043b\u043e\u043a\u0430\u043b\u044c\u043d\u043e \u0441\u0433\u0435\u043d\u0435\u0440\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0445 \u043f\u0440\u0438\u0432\u0430\u0442\u043d\u044b\u0445 \u0441\u043b\u0443\u0447\u0430\u0439\u043d\u044b\u0445 \u0447\u0438\u0441\u0435\u043b. \u0414\u043b\u044f \u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0438 \u0441\u043b\u0443\u0447\u0430\u0439\u043d\u043e\u0433\u043e \u0447\u0438\u0441\u043b\u0430 \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u0442\u0441\u044f \u0441\u0445\u0435\u043c\u0430 \u0448\u0438\u0444\u0440\u043e\u0432\u0430\u043d\u0438\u044f ECIES, \u0432 \u0440\u0430\u043c\u043a\u0430\u0445 \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u043a\u043b\u0438\u0435\u043d\u0442 \u0433\u0435\u043d\u0435\u0440\u0438\u0440\u0443\u0435\u0442 \u0437\u0430\u043a\u0440\u044b\u0442\u044b\u0439 \u0438 \u043e\u0442\u043a\u0440\u044b\u0442\u044b\u0439 \u043a\u043b\u044e\u0447. \u041e\u0442\u043a\u0440\u044b\u0442\u044b\u0439 \u043a\u043b\u044e\u0447 \u043f\u0435\u0440\u0435\u0434\u0430\u0451\u0442\u0441\u044f \u043d\u0430 \u0441\u0435\u0440\u0432\u0435\u0440 \u0441 Drand. \u0421\u043b\u0443\u0447\u0430\u0439\u043d\u043e\u0435 \u0447\u0438\u0441\u043b\u043e \u0448\u0438\u0444\u0440\u0443\u0435\u0442\u0441\u044f \u0441 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435\u043c \u0434\u0430\u043d\u043d\u043e\u0433\u043e \u043e\u0442\u043a\u0440\u044b\u0442\u043e\u0433\u043e \u043a\u043b\u044e\u0447\u0430 \u0438 \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u043f\u0440\u043e\u0441\u043c\u043e\u0442\u0440\u0435\u043d\u043e \u0442\u043e\u043b\u044c\u043a\u043e \u043a\u043b\u0438\u0435\u043d\u0442\u043e\u043c, \u0432\u043b\u0430\u0434\u0435\u044e\u0449\u0438\u043c \u0437\u0430\u043a\u0440\u044b\u0442\u044b\u043c \u043a\u043b\u044e\u0447\u043e\u043c. \u0414\u043b\u044f \u043e\u0431\u0440\u0430\u0449\u0435\u043d\u0438\u044f \u043a \u0441\u0435\u0440\u0432\u0435\u0440\u0430\u043c \u043c\u043e\u0436\u0435\u0442 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c\u0441\u044f \u0443\u0442\u0438\u043b\u0438\u0442\u0430 &#171;drand&#187; (\u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, &#171;drand get public group.toml&#187;, \u0433\u0434\u0435 group.toml \u0441\u043f\u0438\u0441\u043e\u043a \u0443\u0437\u043b\u043e\u0432 \u0434\u043b\u044f \u043e\u043f\u0440\u043e\u0441\u0430) \u0438\u043b\u0438 Web API (\u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u043c\u043e\u0436\u043d\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c &#171;curl https:\/\/drand.cloudflare.com\/api\/public&#187; \u0438\u043b\u0438 \u043e\u0431\u0440\u0430\u0449\u0430\u0442\u044c\u0441\u044f \u0438\u0437 JavaScript \u043f\u0440\u0438 \u043f\u043e\u043c\u043e\u0449\u0438 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/PizzaWhisperer\/drandjs\">DrandJS<\/a><\/noindex>). Metadata zahteve se po\u0161ljejo v formatu TOML, odgovor pa je zagotovljen v JSON.<\/p>\n<p>Trenutno se pobudi League of Entropy pridru\u017eilo pet podjetij in organizacij, ki so omogo\u010dila dostop do svojih generatorjev entropije. Udele\u017eenci projekta so v razli\u010dnih dr\u017eavah in uporabljajo razli\u010dne metode pridobivanja entropije:<\/p>\n<ul>\n<li class=\"l\"> Cloudflare, <noindex><a rel=\"nofollow\" href=\"https:\/\/blog.cloudflare.com\/lavarand-in-production-the-nitty-gritty-technical-details\/\">LavaRand<\/a><\/noindex>, naklju\u010dne vrednosti <noindex><a rel=\"nofollow\" href=\"https:\/\/blog.cloudflare.com\/lavarand-in-production-the-nitty-gritty-technical-details\/\">are formed<\/a><\/noindex> na podlagi nepredvidljivih tokov teko\u010din v <noindex><a rel=\"nofollow\" href=\"https:\/\/ru.wikipedia.org\/wiki\/%D0%9B%D0%B0%D0%B2%D0%BE%D0%B2%D0%B0%D1%8F_%D0%BB%D0%B0%D0%BC%D0%BF%D0%B0\">lavnih lampah<\/a><\/noindex>, katerih slike se uporabljajo kot vhodna entropija za CSPRNG (Kryptografsko varni psevdonaklju\u010dni generator \u0161tevil);\n<li class=\"l\"> EPFL (Zvezna politehni\u0161ka \u0161ola v Lozani), URand,<br \/>\nuporablja lokalni generator \/dev\/urandom, ki uporablja kot vire entropije vhod s tipkovnice, gibanje mi\u0161ke, tok promet in podobno.<\/p>\n<li class=\"l\"> \u010cilska univerza, <noindex><a rel=\"nofollow\" href=\"https:\/\/random.uchile.cl\/en\/\">UChile<\/a><\/noindex>, kot vir entropije uporablja omre\u017eje seizmi\u010dnih senzorjev ter podatke iz radijskega etra, aktivnosti na Twitterju, sprememb v blockchainu Ethereum in doma\u010de strojne generatore RNG;\n<li class=\"l\"> Kudelski Security, ChaChaRand, nudi CRNG (Kryptografski naklju\u010dni generator \u0161tevil), ki temelji na uporabi \u0161ifre ChaCha20;\n<li class=\"l\"> Protocol Labs, InterplanetaryRand, naklju\u010dni podatki se pridobivajo iz uloviteljev \u0161uma in kombinirajo z Linux PRNG ter vgrajenim v CPU generatorjem psevdonaklju\u010dnih \u0161tevil.\n<\/ul>\n<p>\u0412 \u043d\u0430\u0441\u0442\u043e\u044f\u0449\u0435\u0435 \u0432\u0440\u0435\u043c\u044f \u043d\u0435\u0437\u0430\u0432\u0438\u0441\u0438\u043c\u044b\u043c\u0438 \u0443\u0447\u0430\u0441\u0442\u043d\u0438\u043a\u0430\u043c\u0438 \u0437\u0430\u043f\u0443\u0449\u0435\u043d\u043e 8 \u043f\u0443\u0431\u043b\u0438\u0447\u043d\u044b\u0445 \u0442\u043e\u0447\u0435\u043a \u0434\u043e\u0441\u0442\u0443\u043f\u0430 \u043a API, \u0447\u0435\u0440\u0435\u0437 \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043c\u043e\u0436\u043d\u043e \u0443\u0437\u043d\u0430\u0442\u044c \u043a\u0430\u043a \u0442\u0435\u043a\u0443\u0449\u0435\u0435 \u0441\u0432\u043e\u0434\u043d\u043e\u0435 \u0441\u043b\u0443\u0447\u0430\u0439\u043d\u043e\u0435 \u0447\u0438\u0441\u043b\u043e (\u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, &#171;curl https:\/\/drand.cloudflare.com\/api\/public&#187;), \u0442\u0430\u043a \u0438 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0438\u0442\u044c \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435 \u043d\u0430 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0451\u043d\u043d\u044b\u0439 \u043c\u043e\u043c\u0435\u043d\u0442 \u0432 \u043f\u0440\u043e\u0448\u043b\u043e\u043c (&#171;curl https:\/\/drand.cloudflare.com\/api\/public?round=1234&#187;):<\/p>\n<ul>\n<li class=\"l\">    https:\/\/drand.cloudflare.com:443\n<li class=\"l\">    https:\/\/random.uchile.cl:8080\n<li class=\"l\">    https:\/\/drand.cothority.net:7003\n<li class=\"l\">    https:\/\/drand.kudelskisecurity.com:443\n<li class=\"l\">    https:\/\/drand.lbarman.ch:443\n<li class=\"l\">    https:\/\/drand.nikkolasg.xyz:8888\n<li class=\"l\">    https:\/\/drand.protocol.ai:8080\n<li class=\"l\">    https:\/\/drand.zerobyte.io:8888\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Izvor: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=50892\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Cloudflare \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043b\u0430 \u0441\u0435\u0440\u0432\u0438\u0441 League of Entropy, \u0434\u043b\u044f \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f \u0440\u0430\u0431\u043e\u0442\u044b \u043a\u043e\u0442\u043e\u0440\u043e\u0433\u043e \u0441\u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d \u043a\u043e\u043d\u0441\u043e\u0440\u0446\u0438\u0443\u043c \u0438\u0437 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u0438\u0445 \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u0439, \u0437\u0430\u0438\u043d\u0442\u0435\u0440\u0435\u0441\u043e\u0432\u0430\u043d\u043d\u044b\u0445 \u0432 \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u0438\u0438 \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435\u043d\u043d\u044b\u0445 \u0441\u043b\u0443\u0447\u0430\u0439\u043d\u044b\u0445 \u0447\u0438\u0441\u0435\u043b. \u0412 \u043e\u0442\u043b\u0438\u0447\u0438\u0435 \u043e\u0442 \u0441\u0443\u0449\u0435\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0445 \u0446\u0435\u043d\u0442\u0440\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c League of Entropy \u043d\u0435 \u043f\u043e\u043b\u0430\u0433\u0430\u0435\u0442\u0441\u044f \u043d\u0430 \u043e\u0434\u0438\u043d \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a \u0438 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442 \u0434\u043b\u044f \u0433\u0435\u043d\u0435\u0440\u0430\u0446\u0438\u0438 \u0441\u043b\u0443\u0447\u0430\u0439\u043d\u043e\u0439 \u043f\u043e\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438 \u044d\u043d\u0442\u0440\u043e\u043f\u0438\u044e, \u043f\u043e\u043b\u0443\u0447\u0430\u0435\u043c\u0443\u044e \u043e\u0442 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u0438\u0445 \u043d\u0435 \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u044b\u0445 \u0441 \u0441\u043e\u0431\u043e\u0439 \u0433\u0435\u043d\u0435\u0440\u0430\u0442\u043e\u0440\u043e\u0432, \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u0438\u0440\u0443\u0435\u043c\u044b\u0445 \u0440\u0430\u0437\u043d\u044b\u043c\u0438 \u0443\u0447\u0430\u0441\u0442\u043d\u0438\u043a\u0430\u043c\u0438 \u043f\u0440\u043e\u0435\u043a\u0442\u0430. 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