verify/keno_single.html at main · bcgame-project/verify · GitHub

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<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta http-equiv="X-UA-Compatible" content="ie=edge" />
    <title>Keno Single verify</title>
    <link rel="stylesheet" href="./lib/main.css" />
    <link rel="stylesheet" href="./lib/bootstrap/css/bootstrap.min.css" />
    <script src="./lib/GoogleAnalytics.js"></script>
    <script src="./lib/vue.min.js"></script>
    <script src="./lib/crypto-js.js"></script>
    <script src="./lib/tools.js"></script>
  </head>
  <body>
    <div id="app" class="main">
      <h1 class="text-center pb-5">Keno Single verify</h1>
      <hr />
      <form class="py-5">
        <h2 class="text-center">Input</h2>
        <div class="form-group">
          <input
            :value="server_seed"
            @change="server_seed = $event.target.value"
            class="form-control"
            placeholder="Server Seed"
          />
        </div>
        <div class="form-group">
          <input
            :value="client_seed"
            @change="client_seed = $event.target.value"
            class="form-control"
            placeholder="Client Seed"
          />
        </div>
        <div class="form-group">
          <input
            :value="nonce"
            @change="nonce = $event.target.value"
            class="form-control"
            placeholder="Nonce"
          />
        </div>
      </form>
      <hr />
      <form class="py-5">
        <h2 class="text-center pb-5">Output</h2>
        <div class="form-group">
          <label>sha256(server_seed)</label>
          <input
            class="form-control"
            readonly
            :value="CryptoJS.SHA256(CryptoJS.enc.Utf8.parse(server_seed)).toString()"
          />
        </div>
        <div class="form-group">
          <label>hmac_sha256(client_seed:nonce, server_seed)</label>
          <input class="form-control" readonly :value="result_hash" />
        </div>
      </form>
      <hr />
      <form class="py-5">
        <h2 class="text-center pb-5">Final Result</h2>
        <span>{{ resultList }}</span>
      </form>
    </div>
  </body>
  <script>
    let qs = tools.queryString();
    var app = new Vue({
      el: "#app",
      data: {
        /** inputs */
        client_seed: qs.c || "",
        server_seed: qs.s || "",
        nonce: parseInt(qs.n) || 0,
      },
      computed: {
        result_hash() {
          return CryptoJS.HmacSHA256(
            this.client_seed + ":" + this.nonce,
            this.server_seed
          );
        },

        result_hash_list() {
          return String(this.result_hash);
        },

        sha256ServerSeed() {
          return CryptoJS.SHA256(
            CryptoJS.enc.Utf8.parse(this.server_seed)
          ).toString();
        },

        hmacSha256Result() {
          return CryptoJS.HmacSHA256(
            `${this.client_seed}:${this.nonce}`,
            this.server_seed
          ).toString();
        },

        resultList() {
          return this.getResult(this.hmacSha256Result);
        },
      },
      watch: {
        "this.gameResult"() {
          ga("send", "event", "Limbo", "verify", this.server_seed, {
            metric0: this.client_seed,
            metric1: this.nonce,
          });
        },
      },
      methods: {
        parseInt(value) {
          return window.parseInt(value, 16);
        },

        createNums(allNums, hash) {
          const nums = [];
          let h = CryptoJS.SHA256(CryptoJS.enc.Utf8.parse(hash)).toString(CryptoJS.enc.Hex);
          allNums.forEach((c) => {
            nums.push({ num: c, hash: h });
            h = h.substring(1) + h.charAt(0);
          });
          nums.sort(function (o1, o2) {
            if (o1.hash < o2.hash) {
              return -1;
            } else if (o1.hash === o2.hash) {
              return 0;
            } else {
              return 1;
            }
          });
          return nums;
        },

        getResult(hash) {
          const allNums = [
            1, 30, 11, 40, 2, 29, 12, 39, 3, 28, 13, 38, 4, 27, 14, 37, 5, 26,
            15, 36, 6, 25, 16, 35, 7, 24, 17, 34, 8, 23, 18, 33, 9, 22, 19, 32,
            10, 21, 20, 31,
          ];
          let seed = hash;
          let finalNums = this.createNums(allNums, seed);
          seed = CryptoJS.SHA256(CryptoJS.enc.Utf8.parse(seed)).toString();
          finalNums = this.createNums(finalNums, seed);
          return finalNums.slice(0, 10).map((m) => m.num.num);
        },
      },
    });
  </script>
</html>