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videopoker.html
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videopoker.html
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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>VideoPoker 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">VideoPoker 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>
<hr>
</form>
<form class="py-5">
<h2 class="text-center pb-5">Results</h2>
<div class="form-group">
<div class="card-list">
<div :class="['cardbox', cardColor(item.card)]" v-for="(item, index) in card_list" :key="index">
<div class="card">
<div class="flower">{{cardFlower(item.card)}}</div>
<div class="point">{{cardPoint(item.card)}}</div>
</div>
</div>
</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,
allCards: [],
flower_list: ["♠", "♥", "♣", "♦"],
cards: [],
version: qs.version || 1
},
computed: {
result_hash () {
return this.sha512(this.hmac_sha256(this.client_seed + ":" +this.nonce, this.server_seed));
},
result_hash_list () {
return String(this.result_hash).match(/.{2}/g);
},
results () {
let res = [];
let hexArr = this.result_hash_list;
for (let i=0, l=hexArr.length; i<l; i+=4) {
let num = this.parseInt(hexArr[i])/Math.pow(256, 1) + this.parseInt(hexArr[i+1])/Math.pow(256,2) + this.parseInt(hexArr[i+2])/Math.pow(256,3) + this.parseInt(hexArr[i+3])/Math.pow(256,4)
res.push(num);
}
return res;
},
card_list () {
let beginHash = String(this.result_hash);
return this.init(beginHash).splice(0, 10);
}
},
watch: {
'this.results'() {
ga('send', 'event', 'VideoPoker', 'verify', this.server_seed, {metric0: this.client_seed, metric1: this.nonce})
}
},
created () {
this.cards = " ,A,2,3,4,5,6,7,8,9,10,J,Q,K".split(",");
this.allCards = [161, 180, 199, 218, 162, 205, 181, 200, 219, 163, 182, 220, 201, 177, 196, 215, 170, 178, 221, 197, 216, 171, 179, 198, 172, 217, 193, 212, 167, 186, 194, 173, 213, 168, 187, 195, 214, 188, 169, 209, 164, 183, 202, 210, 189, 165, 184, 203, 211, 166, 204, 185]
},
methods: {
sha256 (value) {
return CryptoJS.SHA256(CryptoJS.enc.Utf8.parse(value));
},
hmac_sha256 (msg, salt) {
return CryptoJS.HmacSHA256(msg, salt);
},
sha512 (value) {
return CryptoJS.SHA512(CryptoJS.enc.Utf8.parse(value));
},
parseInt (value) {
return window.parseInt(value, 16);
},
createCards(hash, times, cards, hashList) {
hashList.push(hash);
if (times <= 0) return
let h = hash;
this.allCards.forEach((c) => {
cards.push({ card: c, hash: h });
h = h.substring(1) + h.charAt(0);
});
hash = String(this.sha512(hash));
times--;
this.createCards(hash, times, cards, hashList);
},
init(hash, times) {
times = times || 1;
let cards = [];
let hashList = [];
this.createCards(hash, times, cards, hashList);
cards.sort(function (o1, o2) {
if (o1.hash < o2.hash) {
return -1;
} else if (o1.hash == o2.hash) {
return 0;
} else {
return 1;
}
})
return cards;
},
cardPoint (card) {
let point = this.cards[card % 16];
return point
},
cardFlower (card) {
let flowerIndex = (card & 240) / 16 - 10;
let flower = this.flower_list[flowerIndex];
return flower
},
cardColor (card) {
let flowerIndex = (card & 240) / 16 - 10;
let style = flowerIndex % 2 === 0 ? "black" : "red";
return style
}
}
})
</script>
</html>