{"id":34823,"date":"2019-10-31T22:00:35","date_gmt":"2019-10-31T19:00:35","guid":{"rendered":"https:\/\/prohoster.info\/blog\/ispolzovanie-sluchajnogo-orakula-na-primere-loterei\/"},"modified":"2019-10-31T22:00:35","modified_gmt":"2019-10-31T19:00:35","slug":"ispolzovanie-sluchajnogo-orakula-na-primere-loterei","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sk\/blog\/administrirovanie\/ispolzovanie-sluchajnogo-orakula-na-primere-loterei","title":{"rendered":"Pou\u017eitie n\u00e1hodn\u00e9ho or\u00e1kula na pr\u00edklade lot\u00e9rie","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Jedn\u00e9ho r\u00e1na sa mi do r\u00fak dostal \u010dl\u00e1nok o overovate\u013enom gener\u00e1tore n\u00e1hodn\u00fdch \u010d\u00edsel<\/a><\/noindex> na blockchaine platformy Waves. <\/p>\n

Celkov\u00fd obraz bol jasn\u00fd, ale samotn\u00fd sp\u00f4sob realiz\u00e1cie - to nie. Ak\u00e9si k\u00f3dy, podpisy, \u010do, kam, pre\u010do?<\/p>\n

Po nieko\u013ek\u00fdch konzult\u00e1ci\u00e1ch s autorom or\u00e1kula sa mi podarilo kombinova\u0165 logiku \u017erebovania (realizovan\u00fa v PHP) s algoritmom pre z\u00edskavanie n\u00e1hodn\u00e9ho \u010d\u00edsla.
\n<\/a><\/noindex><\/p>\n

    \n
  1. V momente \u0161tartu turnaja\/kola \u017eiadame od or\u00e1kula prv\u00fa \u010das\u0165 k\u00f3du (R-code).\n

    V tomto momente nem\u00e1me inform\u00e1cie ani o po\u010dte hr\u00e1\u010dov, ani o po\u010dte v\u00ed\u0165azn\u00fdch miest, ani o v\u00fd\u0161ke v\u00fdhier a vlastne o existencii lot\u00e9rie. Or\u00e1kul prostredn\u00edctvom transakcie vyd\u00e1va osobn\u00fd n\u00e1hodn\u00fd k\u00f3d, ktor\u00fd m\u00f4\u017ee by\u0165 pou\u017eit\u00fd len raz a len t\u00fdm, ktor\u00ed ho po\u017eiadali. Mimochodom, R-code si m\u00f4\u017eete \"zak\u00fapi\u0165\" (mysl\u00ed sa t\u00fdm cena transakcie \u017eiadosti + kompenz\u00e1cia or\u00e1kulu za odpovedaj\u00facu transakciu, t\u00e1to suma je pribli\u017ene $0.015 pod\u013ea aktu\u00e1lneho kurzu, samotn\u00fd k\u00f3d sa poskytuje zdarma) vopred, aby ste nestr\u00e1cali \u010das s \u010dak\u00e1nim na odpovedaj\u00facu transakciu. Vytvoril som si mal\u00fd pravidelne dop\u013a\u0148an\u00fd buffer v DB.<\/li>\n

  2. Turnaj trv\u00e1 \u0161tandardne 60 blokov blockchainu platformy Waves, to je moment\u00e1lne pribli\u017ene 1 hodina. Turnaj sa pova\u017euje za uskuto\u010dnen\u00fd a uzavret\u00fd, ak bude po 60 blokoch v \u0148om aspo\u0148 dve l\u00edstky, inak sa \u010das aktivity turnaja predl\u017euje na \u010fal\u0161\u00edch 60 blokov.<\/li>\n
  3. Ihne\u010f po uzavret\u00ed turnaja vytv\u00e1rame a odosielame d\u00e1tov\u00fa transakciu (za ktor\u00fa tie\u017e plat\u00edme poplatok pribli\u017ene $0.005), ak je to potrebn\u00e9 - nieko\u013eko transakci\u00ed, v ktor\u00fdch s\u00fa zaznamenan\u00e9 v\u0161etky podmienky \u017erebovania a usporiadan\u00fd zoznam hr\u00e1\u010dov (l\u00edstkov), z ktor\u00e9ho mus\u00edme vybra\u0165 v\u00ed\u0165azov.<\/li>\n
  4. V tomto \u0161t\u00e1diu u\u017e m\u00e1me prv\u00fa \u010das\u0165 k\u00f3du (R-code) plus ID d\u00e1tovej transakcie (TXID). Odosielame ich na podpis or\u00e1kulu vo forme konkaten\u00e1cie (R-code + TXID), op\u00e4\u0165 plat\u00edme poplatok + kompenz\u00e1ciu. Or\u00e1kul kontroluje prijat\u00e9 \u00fadaje na jedine\u010dnos\u0165 a pr\u00edslu\u0161nos\u0165 a na opl\u00e1tku n\u00e1m posiela druh\u00fa \u010das\u0165 k\u00f3du (S-code) vo form\u00e1te sha256, ktor\u00e1 je v\u00fdchodiskov\u00fdm bodom pre gener\u00e1tor n\u00e1hodn\u00fdch \u010d\u00edsel.<\/li>\n
  5. Aby sme z\u00edskali n\u00e1hodn\u00e9 \u010d\u00edslo, ktor\u00e9 ur\u010duje poradov\u00e9 \u010d\u00edslo v\u00ed\u0165azn\u00e9ho l\u00edstka, prekonvertujeme S-k\u00f3d z bin\u00e1rnych \u00fadajov sha256 do hexadecim\u00e1lneho (HEX) form\u00e1tu. N\u00e1sledne z z\u00edskan\u00e9ho HEX re\u0165azca dostaneme \u010d\u00edslo. Z\u00edskame zvy\u0161ok po delen\u00ed tohto \u010d\u00edsla celkov\u00fdm po\u010dtom l\u00edstkov (all_tickets) a k v\u00fdsledku prid\u00e1me 1 (aby sme z\u00edskali \u010d\u00edslo od 1 do all_tickets). Nakoniec z\u00edskame poradov\u00e9 \u010d\u00edslo v\u00ed\u0165aza.<\/li>\n
  6. Ak v podmienkach \u017erebovania existuje viac v\u00ed\u0165azov, opakujeme predch\u00e1dzaj\u00face oper\u00e1cie rovnak\u00fd po\u010det kr\u00e1t, ako je po\u010det v\u00fdhern\u00fdch miest. Pri ka\u017edom kroku z od zoznamu odstr\u00e1nime l\u00edstok, ktor\u00fd u\u017e vyhral, a zn\u00ed\u017eime all_tickets o 1, pri\u010dom namiesto S-k\u00f3du pou\u017eijeme predch\u00e1dzaj\u00face z\u00edskan\u00e9 \u010d\u00edslo.<\/li>\n<\/ol>\n

    \nRozoberieme konkr\u00e9tny re\u00e1lny pr\u00edklad, turnaj \u010d. 119:<\/p>\n

    Celkovo 7 l\u00edstkov (all_tickets)
    \nCena l\u00edstka 50 minc\u00ed (Bet)
    \nHern\u00fd poplatok 10% (Fee)<\/p>\n

    Pod\u013ea pravidiel lot\u00e9rie sa 30% dost\u00e1va do v\u00fdhern\u00fdch, t.j. v tomto pr\u00edpade 2 l\u00edstky by mali z\u00edska\u0165 cenu, ktorej v\u00fd\u0161ka sa po\u010d\u00edta pod\u013ea vzorca (Bet * all_tickets - Fee) \/ 2.<\/p>\n

    1. Z\u00edskali sme R-k\u00f3d: RdbAiAhKhveAtR4eyTKq75noMxdcEoxbE6BvojJjM13VE<\/a><\/noindex><\/p>\n

    2. Po uzavret\u00ed turnaja m\u00e1me zoznam l\u00edstkov vo forme p\u00e1rov: \u010d\u00edslo + adresa (adresa pe\u0148a\u017eenky, z ktorej boli zaplaten\u00e9 n\u00e1klady na \u00fa\u010das\u0165 v turnaji). V\u0161imnite si, \u017ee adresy sa m\u00f4\u017eu opakova\u0165, \u010do znamen\u00e1, \u017ee jeden \u00fa\u010dastn\u00edk k\u00fapil nieko\u013eko l\u00edstkov na jeden turnaj, \u010do nie je proti pravidl\u00e1m.<\/p>\n

    Poslali sme d\u00e1tum transakcie: 82JTMzhHM5xEA2fQ9Qscd5QAJU3DAd8nShLjdVHTer5S<\/a><\/noindex><\/p>\n

    3. Po\u017eiadali sme o S-k\u00f3d: FTF3uRyaa4F2uAyD6z5a3CNbTXbQLc7fSR6CFNVjgZYV<\/a><\/noindex> s koment\u00e1rom (R-k\u00f3d + TXID):
    \nRdbAiAhKhveAtR4eyTKq75noMxdcEoxbE6BvojJjM13VE 82JTMzhHM5xEA2fQ9Qscd5QAJU3DAd8nShLjdVHTer5S<\/p>\n

    4. Z\u00edskali sme S-k\u00f3d: Ri89jHB4UXZDXY6gT1m4LBDXGMTaYzHozMk4nxiuqVXdC<\/a><\/noindex><\/p>\n

    5. Ur\u010dili sme v\u00ed\u0165azov.<\/p>\n

    6. Poslali sme v\u00fdplaty<\/a><\/noindex><\/p>\n

    V\u00fdsledkom je, \u017ee m\u00e1me v blockchaine krok za krokom z\u00e1znam postupu \u017erebovania cien s mo\u017enos\u0165ou overi\u0165 ho kedyko\u013evek. Podv\u00e1dza\u0165 v\u00fdsledky zo strany organiz\u00e1tora je prakticky nemo\u017en\u00e9, aspo\u0148 to u\u017e nebude mo\u017en\u00e9 urobi\u0165 nen\u00e1padne.<\/p>\n

    ur\u010dte v\u00ed\u0165aza \u010d. 1\n\nV\u0161etky_l\u00edstky:\nIndex: 1 L\u00edstok:139\nIndex: 2 L\u00edstok:141\nIndex: 3 L\u00edstok:143\nIndex: 4 L\u00edstok:145\nIndex: 5 L\u00edstok:147\nIndex: 6 L\u00edstok:149\nIndex: 7 L\u00edstok:151\n\n1. bin -> hex ( bin2hex(sha256(S-k\u00f3d)) ): Ri89jHB4UXZDXY6gT1m4LBDXGMTaYzHozMk4nxiuqVXdC -> 0xdaf5802953dcb27f89972e38e8900b898733f6a613e6e1c6c5491362c1832596\n\n2. hex -> gmp \u010d\u00edslo: 0xdaf5802953dcb27f89972e38e8900b898733f6a613e6e1c6c5491362c1832596 -> 99037963059744689166154019807924045947962565922868104113173478160267437352342\n\n3. gmp -> modulo (mod=7): 99037963059744689166154019807924045947962565922868104113173478160267437352342 -> 4\n\n4. modulo -> l\u00edstok: 4 -> 145\n\nur\u010dte v\u00ed\u0165aza \u010d. 2\n\nV\u0161etky_l\u00edstky:\n\nIndex: 1 L\u00edstok:139\nIndex: 2 L\u00edstok:141\nIndex: 3 L\u00edstok:143\nIndex: 4 L\u00edstok:147\nIndex: 5 L\u00edstok:149\nIndex: 6 L\u00edstok:151\n\n1. bin -> hex ( bin2hex(sha256(prech\u00e1dzaj\u00faci hex)) ): daf5802953dcb27f89972e38e8900b898733f6a613e6e1c6c5491362c1832596 -> 0x9560e77525e9ea2db92cdb8484dc52046ccafac7c719b8859ff55f0eb92834a0\n2. hex -> gmp \u010d\u00edslo: 0x9560e77525e9ea2db92cdb8484dc52046ccafac7c719b8859ff55f0eb92834a0 -> 67565829218838067182838043983962684143266386786567427968312120473742580659360\n3. gmp -> modulo (mod=6): 67565829218838067182838043983962684143266386786567427968312120473742580659360 -> 1\n4. modulo -> l\u00edstok: 1 -> 139\n\nKoniec.<\/code><\/pre>\n
    Zdroj: habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"
    \u041a\u0430\u043a-\u0442\u043e \u0443\u0442\u0440\u043e\u043c \u043d\u0430 \u0433\u043b\u0430\u0437\u0430 \u043f\u043e\u043f\u0430\u043b\u0430\u0441\u044c \u0441\u0442\u0430\u0442\u044c\u044f \u043e \u043f\u0440\u043e\u0432\u0435\u0440\u044f\u0435\u043c\u043e\u043c \u0433\u0435\u043d\u0435\u0440\u0430\u0442\u043e\u0440\u0435 \u0441\u043b\u0443\u0447\u0430\u0439\u043d\u044b\u0445 \u0447\u0438\u0441\u0435\u043b \u043d\u0430 \u0431\u043b\u043e\u043a\u0447\u0435\u0439\u043d\u0435 Waves platform. \u041e\u0431\u0449\u0430\u044f \u043a\u0430\u0440\u0442\u0438\u043d\u0430 \u0431\u044b\u043b\u0430 \u043f\u043e\u043d\u044f\u0442\u043d\u0430, \u0430 \u0432\u043e\u0442 \u0441\u043f\u043e\u0441\u043e\u0431 \u043a\u043e\u043d\u043a\u0440\u0435\u0442\u043d\u043e\u0439 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u2014 \u043d\u0435\u0442. \u041a\u0430\u043a\u0438\u0435-\u0442\u043e \u043a\u043e\u0434\u044b, \u043f\u043e\u0434\u043f\u0438\u0441\u0438, \u0447\u0442\u043e, \u043a\u0443\u0434\u0430, \u0437\u0430\u0447\u0435\u043c? \u041d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u043a\u043e\u043d\u0441\u0443\u043b\u044c\u0442\u0430\u0446\u0438\u0439 \u0443 \u0430\u0432\u0442\u043e\u0440\u0430 \u043e\u0440\u0430\u043a\u0443\u043b\u0430, \u0432 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u0435 \u043f\u043e\u043b\u0443\u0447\u0438\u043b\u043e\u0441\u044c \u043e\u0431\u044a\u0435\u0434\u0438\u043d\u0438\u0442\u044c \u043b\u043e\u0433\u0438\u043a\u0443 \u0440\u043e\u0437\u044b\u0433\u0440\u044b\u0448\u0430 (\u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d\u0430 \u043d\u0430 PHP) \u0441 \u0430\u043b\u0433\u043e\u0440\u0438\u0442\u043c\u043e\u043c \u043f\u043e\u043b\u0443\u0447\u0435\u043d\u0438\u044f \u0441\u043b\u0443\u0447\u0430\u0439\u043d\u043e\u0433\u043e \u0447\u0438\u0441\u043b\u0430. \u0412 \u043c\u043e\u043c\u0435\u043d\u0442 \u0441\u0442\u0430\u0440\u0442\u0430 \u0442\u0443\u0440\u043d\u0438\u0440\u0430\/\u0440\u0430\u0443\u043d\u0434\u0430 […]<\/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":[688],"tags":[],"class_list":["post-34823","post","type-post","status-publish","format-standard","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Pou\u017eitie n\u00e1hodn\u00e9ho or\u00e1kula na pr\u00edklade lot\u00e9rie | ProHoster","description":"Jedn\u00e9ho r\u00e1na sa mi dostal do r\u00fak \u010dl\u00e1nok o overovanom gener\u00e1tore n\u00e1hodn\u00fdch \u010d\u00edsel na blockchaine platformy Waves.","canonical_url":"https:\/\/prohoster.info\/sk\/blog\/administrirovanie\/ispolzovanie-sluchajnogo-orakula-na-primere-loterei","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"sk_SK","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0441\u043b\u0443\u0447\u0430\u0439\u043d\u043e\u0433\u043e \u043e\u0440\u0430\u043a\u0443\u043b\u0430 \u043d\u0430 \u043f\u0440\u0438\u043c\u0435\u0440\u0435 \u043b\u043e\u0442\u0435\u0440\u0435\u0438 | ProHoster","og:description":"\u041a\u0430\u043a-\u0442\u043e \u0443\u0442\u0440\u043e\u043c \u043d\u0430 \u0433\u043b\u0430\u0437\u0430 \u043f\u043e\u043f\u0430\u043b\u0430\u0441\u044c \u0441\u0442\u0430\u0442\u044c\u044f \u043e \u043f\u0440\u043e\u0432\u0435\u0440\u044f\u0435\u043c\u043e\u043c \u0433\u0435\u043d\u0435\u0440\u0430\u0442\u043e\u0440\u0435 \u0441\u043b\u0443\u0447\u0430\u0439\u043d\u044b\u0445 \u0447\u0438\u0441\u0435\u043b \u043d\u0430 \u0431\u043b\u043e\u043a\u0447\u0435\u0439\u043d\u0435 Waves platform.","og:url":"https:\/\/prohoster.info\/sk\/blog\/administrirovanie\/ispolzovanie-sluchajnogo-orakula-na-primere-loterei","og:image":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:secure_url":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:width":350,"og:image:height":350,"article:published_time":"2019-10-31T19:00:35+00:00","article:modified_time":"2019-10-31T19:00:35+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"34823","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":null,"schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"seo_analyzer_scan_date":"2026-01-21 20:44:19","breadcrumb_settings":null,"limit_modified_date":false,"reviewed_by":null,"ai":null,"created":"2021-03-01 02:14:06","updated":"2026-01-21 20:44:19","focus_keyword":null,"additional_keywords":null,"truseo_locale":null},"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/posts\/34823","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/comments?post=34823"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/posts\/34823\/revisions"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/media?parent=34823"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/categories?post=34823"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/tags?post=34823"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}