{"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\/et\/blog\/administrirovanie\/ispolzovanie-sluchajnogo-orakula-na-primere-loterei","title":{"rendered":"Juhusliku oraakli kasutamine loterii n\u00e4itel","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

\u00dchel hommikul sattusin artiklile, kontrollitava juhuslike arvude genereerijast<\/a><\/noindex> Waves platvormi plokiahelas. <\/p>\n

\u00dcldine pilt oli selge, kuid konkreetse teostamise meetod ei olnud. Mida teha koodide, allkirjade ja k\u00f5igi nende k\u00fcsimustega?<\/p>\n

P\u00e4rast mitmeid konsultatsioone oraakli autoriga \u00f5nnestus l\u00f5ppkokkuv\u00f5ttes \u00fchendada loosimislahendus (teostatud PHP-s) juhusliku numbri saamise algoritmiga.
\n<\/a><\/noindex><\/p>\n

    \n
  1. Turniiri \/ vooru alguses k\u00fcsime oraaklilt esimest koodijuppi (R-kood).\n

    Sellisel hetkel pole mingit teavet m\u00e4ngijate arvu, auhinnakohtade arvu, auhinnaraha suuruse ja isegi loterii olemasolu kohta. Oraakel annab tehingu kaudu v\u00e4lja isikliku juhusliku koodi, mida saab hiljem kasutada ainult \u00fche korra ja ainult selle isiku poolt, kes seda k\u00fcsis. Muide, R-koodi saab \"ostma\" (see h\u00f5lmab tehingu taotlemise kulusid + kompensatsiooni oraaklile vastustehingu eest, see summa on praeguse kursi korral umbes $0.015, kuid kood v\u00e4ljastatakse tasuta) ette mitmeid, et hiljem ei peaks ootele j\u00e4\u00e4ma. Loodud v\u00e4ike regulaarselt t\u00e4iendatav vahem\u00e4lu andmebaasis.<\/li>\n

  2. Turniir kestab tavaliselt 60 plokki Waves platvormi plokiahelas, mis praegu v\u00f5rdub umbes 1 tunni. Turniir loetakse toimunuks ja suletuks, kui p\u00e4rast 60 plokki on selles v\u00e4hemalt kaks piletit, vastasel juhul pikendatakse turniiri aktiivsusaega veel 60 ploki v\u00f5rra.<\/li>\n
  3. Otse turniiri sulgemise j\u00e4rel koostame ja saadame andmete tehingu (mille eest maksame umbes $0.005 tasu), vajadusel mitu, kus on fikseeritud k\u00f5ik loosimise tingimused ja korrastatud m\u00e4ngijate (piletite) nimekiri, mille hulgast peame v\u00f5itjad valima.<\/li>\n
  4. Selles etapis on meil juba esimene koodijupp (R-kood) pluss tehingu ID (TXID). Saadame need oraaklile allkirjastamiseks konkatena (R-kood + TXID), maksame j\u00e4lle tasu + kompensatsiooni. Oraakel kontrollib saadud andmeid unikaalsuse ja kuuluvuse osas ning vastuseks saadab meile teise osa koodist (S-kood) sha256 formaadis, mis on juhuslike arvude generaatori l\u00e4htepunkt.<\/li>\n
  5. Kuna juhuslik number, mis n\u00e4itab v\u00f5itnud pileti j\u00e4rjekorranumbrit, teisendame S-koodi binaarsetest sha256 andmetest heksadesimaalsesse (HEX) esitusesse. Seej\u00e4rel saame saadud HEX stringist numbri. Sigurime j\u00e4\u00e4nuse, jagades saadud numbri piletite koguarvuga (all_tickets) ja lisame tulemusele 1 (et saada number 1 kuni all_tickets). L\u00f5puks saame v\u00f5itja j\u00e4rjekorranumbri.<\/li>\n
  6. Kui loteriiv\u00f5itjate arvust on mitu, kordame eelmiseid toiminguid v\u00f5idukohtade arvuga. Iga kord eemaldame v\u00f5itnud pileti nimekirjast ja v\u00e4hendame all_tickets'i 1 v\u00f5rra, ning S-koodi asemel kasutame eelnevalt saadud numbrit.<\/li>\n<\/ol>\n

    \nVaatame konkreetset reaalset n\u00e4idet, turniir nr 119:<\/p>\n

    Kokku 7 piletit (all_tickets)
    \nPileti hind 50 m\u00fcnti (Bet)
    \nM\u00e4ngutasu 10% (Fee)<\/p>\n

    Loterii tingimuste kohaselt l\u00e4heb 30% auhindadele, st antud juhul peavad 2 piletit auhinna saama, mille suurust arvutatakse valemiga (Bet*all_tickets-Fee)\/2.<\/p>\n

    1. Saime R-koodi: RdbAiAhKhveAtR4eyTKq75noMxdcEoxbE6BvojJjM13VE<\/a><\/noindex><\/p>\n

    2. Turniiri sulgemisel on meil piletite nimekiri paaridena: number + aadress (rahakoti aadress, mille kaudu osalustasu maksti). T\u00f5stame esile, et aadressid v\u00f5ivad korduda, mis t\u00e4hendab, et \u00fcks osaleja on ostnud turniiri jaoks mitu piletit, seda ei keelata reeglites.<\/p>\n

    Saime tehingu kuup\u00e4eva: 82JTMzhHM5xEA2fQ9Qscd5QAJU3DAd8nShLjdVHTer5S<\/a><\/noindex><\/p>\n

    3. K\u00fcsisime S-koodi: FTF3uRyaa4F2uAyD6z5a3CNbTXbQLc7fSR6CFNVjgZYV<\/a><\/noindex> kommentaariga (R-kood + TXID):
    \nRdbAiAhKhveAtR4eyTKq75noMxdcEoxbE6BvojJjM13VE 82JTMzhHM5xEA2fQ9Qscd5QAJU3DAd8nShLjdVHTer5S<\/p>\n

    4. Saime S-koodi: Ri89jHB4UXZDXY6gT1m4LBDXGMTaYzHozMk4nxiuqVXdC<\/a><\/noindex><\/p>\n

    5. M\u00e4\u00e4rasime v\u00f5itjad.<\/p>\n

    6. Saime v\u00e4ljamakseid<\/a><\/noindex><\/p>\n

    Seega on meil plokiahelas samm-sammuline dokumentatsioon auhindade loosimise protsessist, mille saab iga kell kontrollida. Tulemuste manipuleerimine korraldaja poolt on praktiliselt v\u00f5imatu, v\u00e4hemalt ei saa seda juba m\u00e4rkamatult teha.<\/p>\n

    m\u00e4\u00e4rata v\u00f5itja \u2116 1\n\nK\u00f5ik_piletid:\nIndeks: 1 Pilet:139\nIndeks: 2 Pilet:141\nIndeks: 3 Pilet:143\nIndeks: 4 Pilet:145\nIndeks: 5 Pilet:147\nIndeks: 6 Pilet:149\nIndeks: 7 Pilet:151\n\n1. bin -> hex ( bin2hex(sha256(S-kood)) ): Ri89jHB4UXZDXY6gT1m4LBDXGMTaYzHozMk4nxiuqVXdC -> 0xdaf5802953dcb27f89972e38e8900b898733f6a613e6e1c6c5491362c1832596\n\n2. hex -> gmp number: 0xdaf5802953dcb27f89972e38e8900b898733f6a613e6e1c6c5491362c1832596 -> 99037963059744689166154019807924045947962565922868104113173478160267437352342\n\n3. gmp -> modulo (mod=7): 99037963059744689166154019807924045947962565922868104113173478160267437352342 -> 4\n\n4. modulo -> pilet: 4 -> 145\n\nm\u00e4\u00e4rata v\u00f5itja \u2116 2\n\nK\u00f5ik_piletid:\n\nIndeks: 1 Pilet:139\nIndeks: 2 Pilet:141\nIndeks: 3 Pilet:143\nIndeks: 4 Pilet:147\nIndeks: 5 Pilet:149\nIndeks: 6 Pilet:151\n\n1. bin -> hex ( bin2hex(sha256(eelmine hex)) ): daf5802953dcb27f89972e38e8900b898733f6a613e6e1c6c5491362c1832596 -> 0x9560e77525e9ea2db92cdb8484dc52046ccafac7c719b8859ff55f0eb92834a0\n2. hex -> gmp number: 0x9560e77525e9ea2db92cdb8484dc52046ccafac7c719b8859ff55f0eb92834a0 -> 67565829218838067182838043983962684143266386786567427968312120473742580659360\n3. gmp -> modulo (mod=6): 67565829218838067182838043983962684143266386786567427968312120473742580659360 -> 1\n4. modulo -> pilet: 1 -> 139\n\nL\u00f5pp.<\/code><\/pre>\n
    Allikas: 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\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\udd47Juhusliku oracle'i kasutamine loterii n\u00e4itel | ProHoster","description":"\u00dchel hommikul sattusin n\u00e4gema artiklit testitavast juhuslike numbrite generaatorist Waves platvormi 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