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blackjack.html
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blackjack.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>Blackjack Verify</title>
<link rel="stylesheet" href="./lib/highlight.css">
<script src="./lib/highlight.min.js"></script>
<script src="./lib/crypto-js.js"></script>
<style>
body{
font-family: -apple-system,"Helvetica Neue",Helvetica,Arial,"PingFang SC","Hiragino Sans GB","WenQuanYi Micro Hei","Microsoft Yahei",sans-serif;
font-size: 14px; color: #fff;
background-color: #202733;
}
:focus{
outline: none;
}
::-webkit-scrollbar {
background-color:#303e56;
border-radius: 3px;
height: 6px;
width: 6px
}
::-webkit-scrollbar-corner{
background-color: transparent;
}
::-webkit-scrollbar-thumb {
background-color: #6c7d9b;
border-radius: 3px
}
input[type="text"]{
box-sizing: border-box; width: 260px;
border: 2px solid #F7BB0A;
background-color: transparent;
color: #fff;
padding: 6px 10px;
border-radius: 3px;
line-height: 20px;
}
button{
box-sizing: border-box; width: 260px;
color: #fff;
background-color: #F7BB0A;
border: none;
padding: 10px 20px;
border-radius: 3px;
}
.tc{
text-align: center;
}
.form-item{
margin: 16px 0;
}
.cardbox{
position: relative;
display: inline-block; width: 20px; height: 50px; padding: 15px 15px;
}
.card{
position: absolute; cursor: pointer;
width: 20px; height: 30px;
background-color: #e0e4eb;
border-radius: 2px;
line-height: 16px;
box-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
}
.cardbox.red{
color: #f00;
}
.cardbox.black{
color: #000;
}
.card .point{
position: absolute;
left: -2px; top: 0px; width: 20px;
text-align: center;
}
.card .flower{
position: absolute; bottom: 1px; right: 2px;
font-size: 20px;
}
.cardbox .index{
position: absolute; bottom: 10px; left: 0; right: 0; text-align: center; color: #fff;
font-size: 12px; line-height: 20px;
}
.cardbox.active .card, .cardbox:hover .card{
transform: scale(2);
}
.cardbox.active .index, .cardbox:hover .index{
bottom: 0;
}
.script_box{
}
.script_box>code{
height: 100%;
box-sizing: border-box;
}
#form{
margin: 80px auto;
}
#cards{
clear: both;
}
#public_key{
}
</style>
</head>
<body>
<div id="form">
<div class="form-item tc">
<h3>Blackjack Verify</h3>
</div>
<div class="form-item tc">
<input id="signature" type="text" placeholder="Signature">
<input id="issus" style="width: 60px;" type="text" placeholder="Issus">
</div>
<div class="form-item tc">
<button id="button">Verify</button>
</div>
</div>
<div id="cards" class="form-item"></div>
<h2>Card generation algorithm</h2>
<pre class="script_box"><code id="card_script_clone" class="javascript"></code></pre>
<script>
let signature, issus, range, search = decodeURIComponent(window.location.search);
signature = search.match(/[\?|&]s=([^&]+)/);
signature = signature ? signature[1] : "";
issus = search.match(/[\?|&]i=([^&]+)/);
issus = issus ? issus[1] : "";
range = search.match(/[\?|&]range=([^&]+)/);
range = range
?range[1].split(",").map(function(item){return parseInt(item);})
:null;
</script>
<script id="card_script">
(function(){
const CARDS = " ,A,2,3,4,5,6,7,8,9,10,J,Q,K".split(",");
const FLOWER = ["♠", "♥", "♣", "♦"];
let allCards = [];
const allCards1 = [];
const allCards2 = [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];
for ( let c = 10; c <= 13; c++ ) {
for( let v = 1; v <= 13; v++ ) {
allCards1.push( c * 16 + v );
}
}
function createCards (hash, times, cards, hashList) {
hashList.push(hash);
if (times <= 0) return
let h = hash;
allCards.forEach((c) => {
cards.push({card: c, hash: h});
h = h.substring(1) + h.charAt(0);
});
hash = String(CryptoJS.SHA256(hash));
times--;
createCards(hash, times, cards, hashList);
}
function create (hash, times) {
times = times || 12;
let cards = [];
let hashList = [];
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;
}
function createCardFram (card, index) {
let flowerIndex = (card & 240) / 16 - 10;
let flower = FLOWER[flowerIndex];
let point = CARDS[card % 16];
let style = flowerIndex % 2 === 0 ? "black" : "red";
let classNames = ["cardbox", style];
if (range && index >= range[0] && index < range[1]) {
classNames.push("active");
}
return '<div class="'+classNames.join(" ")+'"><div class="card"><div class="flower">'
+flower+'</div><div class="point">'
+point+'</div></div><div class="index">'
+index+'</div></div>';
}
let $button = document.getElementById("button");
let $signature = document.getElementById("signature");
let $issus = document.getElementById("issus");
let $cards = document.getElementById("cards");
function generate () {
let beginHash = String(CryptoJS.SHA256($signature.value));
let list = create(beginHash);
let cardsfram = list.map(function (item, index) {
return createCardFram(item.card, index);
});
$cards.innerHTML = cardsfram.join('');
}
$button.addEventListener("click", function(){
let query = '?s=' + $signature.value + '&i=' + $issus.value;
location.replace(location.href.replace(/\?*.*$/, query));
}, false)
if (issus) {
$issus.value = issus;
allCards = parseInt(issus) > 50105 ? allCards2 : allCards1;
}
if (signature) {
$signature.value = signature;
generate();
}
})();
</script>
<h2>Signature verification</h2>
<pre class="script_box"><code id="seed_verify" class="bash">
#!/bin/bash
# Defining variables
bj_issus='1'
bj_slat='00000000000000000009e93621499e5a63d79a6293609ce52e95e93dd49cb1be'
bj_signature='zXkrgsio9iqZOpgJ46US/3lUnlNVL7TNYoWo4Rn1XuG0b2KKse8IvFRrtW+VdKF9D97/SV3+vmQm6hFGoDjEYZOvHrsB83KOgzxo9Rb6lZ7r2lI9+jnPb4wIKsiRnRvAPcwyoTjwQZGxTFXG785JikvHgdhyKu9Y94HT/cBSN2I='
# Save public key
echo '-----BEGIN PUBLIC KEY-----
MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDE9QKpw5CHZyf+OfcrT5MCeiCR
CLVZjDVUSPGzwXdoGAcRi/r9y7T8t4/byXNTLky0h9dUGKBowwN7bt7fgMKvWAtz
0Xf4ztfpsEoRHrzRs2r8khPUjihjrz0N+oPQ+ktAh7M95ZnQfgt/hNWFevGRd+SV
sGsWhO8VFrBYb7nS8wIDAQAB
-----END PUBLIC KEY-----' > pub.pem
# Save signature
base64 --decode <<<$bj_signature > signature.sign
# HMAC slat and verify
echo -n $bj_issus | openssl dgst -sha256 -hmac $bj_slat -binary | openssl dgst -sha256 -verify pub.pem -signature signature.sign
</code></pre>
<script>
(function(){
let clone = document.getElementById("card_script_clone");
let script = document.getElementById("card_script");
let seed_verify = document.getElementById("seed_verify");
seed_verify.innerHTML = seed_verify.innerHTML.replace(/issus\=\'[^']+\'/, "issus='"+issus+"'")
.replace(/signature\=\'[^']+\'/, "signature='"+signature+"'");
// hljs.highlightBlock(clone.children[0]);
clone.innerText = script.innerText;
hljs.initHighlightingOnLoad();
// hljs.configure({useBR: true});
// hljs.highlightBlock(clone);
})();
</script>
</body>
</html>