verify/ringOfFortune_new.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>Ring of fortune 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>
  <script src="./lib/utils.js"></script>
</head>

<body>

  <div id="app" class="main">
    <h1 class="text-center pb-5">Ring of fortune verify</h1>
    <hr>
    <form class="py-5">
      <h2 class="text-center">Input</h2>
      <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="server_seed" @change="server_seed = $event.target.value" class="form-control"
          placeholder="Server Seed">
      </div>
      <div class="form-group">
        <input :value="server_seed_hash" @change="server_seed_hash = $event.target.value" class="form-control"
          placeholder="Server Seed Hash">
      </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="sha256(server_seed)">
      </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">
      <form class="py-5">
        <h2 class="text-center pb-5">Results</h2>
        <h5>Final Result</h5>
        <input class="form-control" readonly :value="numResult * 1000">
        <h5 style="margin-top: 20px;">Calculation Process</h5>
        <p>Using the formula `hmac_sha256(client_seed:nonce, server_seed)`,</p>
        <p>We get the hash result:</p>
        <p>`{{result_hash}}`.</p>
        <br>
        <ol>
          <li>Take the first 15 characters, resulting in `{{baseHash}}`.</li>
          <li>Convert this to decimal, which gives: `{{BigInt('0x' + baseHash)}}`.</li>
          <li>Perform modulus 47(47 is fixed constant), and we get a remainder of {{index}}.</li>
          <li>Starting from the index, take 14 characters, resulting in <span class="text-danger">`{{newHash}}`</span>.
          </li>
          <li>Convert this to decimal, resulting in: `{{BigInt('0x' + newHash)}}`.</li>
          <li>Divide by 8(8 is a fixed constant), resulting in: `{{BigInt('0x' + newHash) / BigInt(8)}}`.</li>
          <li>Multiply by 2^-53(2^-53 is a fixed constant), resulting in: `{{Number(BigInt('0x' + newHash) /
            BigInt(8)) * Math.pow(2, -53)}}`.</li>
          <li>Finally, Multiply by 1000(1000 is a fixed constant), resulting in: `{{Number(BigInt('0x' + newHash) /
            BigInt(8)) * Math.pow(2, -53) * 1000}}`.</li>
        </ol>
        <div></div>
      </form>
      <div :class="{'text-success': numResult * 1000 <= 495}">0~495 = {{range1}}</div>
      <div :class="{'text-success': numResult * 1000 >= 496 && numResult * 1000 <= 825}">496~825 = {{range2}}</div>
      <div :class="{'text-success': numResult * 1000 >= 826 && numResult * 1000 <= 990}">826~990 = {{range3}}</div>
      <div :class="{'text-success': numResult * 1000 >= 991}">991~1000 = {{range4}}</div>
  </div>
  </form>
  </div>
</body>
<script>
  let qs = tools.queryString();
  var app = new Vue({
    el: '#app',
    data: {
      /** inputs */
      client_seed: qs.c || '',
      server_seed: qs.s || '',
      server_seed_hash: qs.h || '',
      nonce: parseInt(qs.n) || 0,
      range1: qs.he === '4' ? '1.93x' : '2x',
      range2: qs.he === '4' ? '2.90x' : '3x',
      range3: qs.he === '4' ? '5.81x' : '6x',
      range4: qs.he === '4' ? '96x' : '99x',
    },
    computed: {
      result_hash() {
        return this.hmac_sha256(this.client_seed + ':' + this.nonce, this.server_seed);
      },
      result_hash_list() {
        return String(this.result_hash)
      },
      baseHash() {
        return this.result_hash_list.substring(0, 15)
      },
      index() {
        return Number(BigInt('0x' + this.result_hash_list.substring(0, 15)) % BigInt(47))
      },
      newHash() {
        return this.result_hash_list.substring(this.index, this.index + 14)
      },
      results() {
        let list = this.result_hash_list
        let res = {
          dec: [],
          hex: []
        }
        for (let i = 0; i < list.length; i += 2) {
          let dext = list[i] + list[i + 1]
          let hext = parseInt(dext, 16)
          res.dec.push(dext)
          res.hex.push(hext)
        }
        return res
      },
      numResult() {
        return slideWindowNumber(this.result_hash_list, 1000) / 1000;
      }
    },
    watch: {
      'this.numResult'() {
        ga('send', 'event', 'ClassicDice', 'verify', this.server_seed, { metric0: this.client_seed, metric1: this.nonce })
      }
    },
    created() {
      console.log(this.result_hash_list)
    },
    methods: {
      hmac_sha256(msg, salt) {
        return CryptoJS.HmacSHA256(msg, salt);
      },
      sha512(value) {
        return CryptoJS.SHA512(CryptoJS.enc.Utf8.parse(value));
      },
      sha256(value) {
        return CryptoJS.SHA256(CryptoJS.enc.Utf8.parse(value));
      },
      parseInt(value) {
        return window.parseInt(value, 16);
      },
    }
  });
</script>

</html>