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crash.html
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<!DOCTYPE html>
<html>
<head>
<title>Crash - Game Verification Script</title>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<meta name="robots" content="noindex, nofollow">
<meta name="googlebot" content="noindex, nofollow">
<meta name="viewport" content="width=device-width, initial-scale=1">
<script type="text/javascript" src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.js"></script>
<link rel="stylesheet" type="text/css" href="//cdnjs.cloudflare.com/ajax/libs/bulma/0.6.2/css/bulma.min.css">
<link rel="stylesheet" type="text/css" href="//cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
<script type="text/javascript" src="//cdnjs.cloudflare.com/ajax/libs/crypto-js/3.1.9-1/crypto-js.min.js"></script>
<style>
*, body, button, input, textarea, select {
text-rendering: optimizeLegibility;
-moz-osx-font-smoothing: grayscale;
}
body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,form,fieldset,input,textarea,p,blockquote,th,td {
margin:0;
padding:0;
}
table {
border-collapse:collapse;
border-spacing:0;
}
fieldset,img {
border:0;
}
address,caption,cite,code,dfn,em,strong,th,var {
font-style:normal;
font-weight:normal;
}
ol,ul {
list-style:none;
}
caption,th {
text-align:left;
}
h1,h2,h3,h4,h5,h6 {
font-size:100%;
font-weight:normal;
}
q:before,q:after {
content:'';
}
abbr,acronym { border:0;}
</style>
<style type="text/css">
table {
table-layout: fixed;
}
table thead tr th:first-child {
width: 80%;
}
table tbody tr td {
white-space: nowrap;
overflow: hidden;
text-overflow: ellipsis;
}
.is-first {
background-color: rgba(195, 111, 24, 0.2);
}
.is-over-median {
color: #44B39D;
}
.is-at-median {
color: #3B3C3D;
}
.is-under-median {
color: #BF4A67;
}
</style>
</head>
<body>
<section class="section">
<div class="container">
<h1 class="title">Crash - Game Verification Script</h1>
<h2 class="subtitle">Third party script used to verify games on crash game.</h2>
</div>
<hr>
<div class="container">
<p>The following sites have purchased a non-distributable copy of the previous version of bc.game’s source code, exempting them from the requirements of the AGPL:</p>
<p><a target="_blank" href="https://bc.game">https://bc.game</a></p>
</div>
<hr>
<div class="container">
<p>We made the decision to update Crash using a salted hash as requested by our players in order to provide the most randomized and fair results possible after Bet <span class="has-text-info"># 2561902</span>. For further details, please visit <a target="_blank" href="https://bitcointalk.org/index.php?topic=5256606">https://bitcointalk.org/index.php?topic=5256606</a></p>
</div>
<hr>
<div class="container">
<div class="field">
<label class="label">Game's hash</label>
<p class="control has-icons-left">
<input class="input" type="text" id="game_hash_input" placeholder="Game's hash (SHA256)">
<span class="icon is-small is-left"><i class="fa fa-key"></i></span>
</p>
</div>
<div class="field">
<label class="label">Salt</label>
<p class="control has-icons-left">
<input class="input" type="text" id="game_salt_input" placeholder="Salt" value="0000000000000000000e3a66df611d6935b30632f352e4934c21059696117f28">
<span class="icon is-small is-left"><i class="fa fa-filter"></i></span>
</p>
</div>
<div class="field">
<label class="label">Amount of games</label>
<p class="control has-icons-left">
<input class="input" type="number" id="game_amount_input" min="1" max="100000" step="1" placeholder="Amount of games" value="10">
<span class="icon is-small is-left"><i class="fa fa-hashtag"></i></span>
</p>
</div>
<div class="field is-grouped">
<p class="control">
<a class="button is-primary" id="game_verify_submit">Verify</a>
</p>
</div>
</div>
<hr>
<div class="container">
<table class="table is-striped is-fullwidth is-hoverable is-narrow" style="display:table">
<thead>
<tr>
<th><b>Game's hash</b></th>
<th><b>Bust</b></th>
</tr>
</thead>
<tbody id="game_verify_table"></tbody>
</table>
</div>
</section>
<script type="text/javascript">
var isVerifying = false;
$('#game_verify_submit').on('click', () => {
if (isVerifying) return;
isVerifying = true;
$('#game_hash_input').parent().addClass('is-loading');
$('#game_verify_submit').addClass('is-loading');
$('#game_hash_input, #game_amount_input, #game_verify_submit').attr('disabled', 'disabled');
$('#game_verify_table').html('');
let prevHash = null;
for (let i = 0; i < $('#game_amount_input').val(); i++) {
let hash = String(prevHash ? CryptoJS.SHA256(String(prevHash)) : $('#game_hash_input').val());
let bust = gameResult(hash, $('#game_salt_input').val());
setTimeout(function() {
addTableRow(hash, bust, i)
}, i * 1);
prevHash = hash;
}
});
$('#game_amount_input').on('keyup', () => {
if ($('#game_amount_input').val() >= 10000) {
if ($('#game_verify_warning').length) return;
$('#game_verify_submit').parent().append(
$('<span/>').attr({
'id': 'game_verify_warning',
'class': 'tag is-warning'
}).text("Verifying a huge amount of games may consume more ressources from your CPU")
);
} else {
if ($('#game_verify_warning').length) {
$('#game_verify_warning').remove();
}
}
});
const addTableRow = (hash, bust, index) => {
$('<tr/>').attr({
'class': index === 0 ? 'is-first' : null
}).append(
$('<td/>').text(hash)
).append(
$('<td/>').text(bust).attr({
'class': bust === 1.98 ? 'is-at-median' : bust > 1.98 ? 'is-over-median' : 'is-under-median'
})
).appendToWithIndex($('#game_verify_table'), index);
if (index >= $('#game_amount_input').val() - 1) {
$('#game_hash_input').parent().removeClass('is-loading');
$('#game_verify_submit').removeClass('is-loading');
$('#game_hash_input, #game_amount_input, #game_verify_submit').removeAttr("disabled");
isVerifying = false;
}
};
const gameResult = (seed, salt) => {
const nBits = 52; // number of most significant bits to use
// 1. HMAC_SHA256(message=seed, key=salt)
if (salt) {
const hmac = CryptoJS.HmacSHA256(CryptoJS.enc.Hex.parse(seed), salt);
seed = hmac.toString(CryptoJS.enc.Hex);
}
// 2. r = 52 most significant bits
seed = seed.slice(0, nBits / 4);
const r = parseInt(seed, 16);
// 3. X = r / 2^52
let X = r / Math.pow(2, nBits); // uniformly distributed in [0; 1)
X = parseFloat(X.toPrecision(9));
// 4. X = 99 / (1-X)
X = 99 / (1 - X);
// 5. return max(trunc(X), 100)
const result = Math.floor(X);
return Math.max(1, result / 100);
};
$.fn.appendToWithIndex = function(to, index) {
if (!to instanceof jQuery) {
to = $(to);
};
if (index === 0) {
$(this).prependTo(to)
} else {
$(this).insertAfter(to.children().eq(index - 1));
}
};
var hash_url = window.location.search
if ((/nosalt/).test(hash_url)) {
$('#game_salt_input').val('');
}
if ((/hash=/).test(hash_url)) {
var hash = hash_url.match(/hash=[0-9a-zA-z]+/)[0].replace(/hash=/, '');
$('#game_hash_input').val(hash)
$('#game_verify_submit').click()
}
</script>
<script>
// tell the embed parent frame the height of the content
if (window.parent && window.parent.parent) {
window.parent.parent.postMessage(["resultsFrame", {
height: document.body.getBoundingClientRect().height,
slug: "nwu2ffkv"
}], "*")
}
</script>
</body>
</html>