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roulettesingle.html
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roulettesingle.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Roulette Single Verify</title>
<link rel="stylesheet" href="./lib/main.css">
<link rel="stylesheet" href="./lib/bootstrap/css/bootstrap.min.css">
<script src="./lib/react.production.min.js"></script>
<script src="./lib/react-dom.production.min.js"></script>
<script src="./lib/crypto-js.js"></script>
<script src="./lib/tools.js"></script>
<script src="./lib/hooks.js"></script>
<script src="./lib/babel.min.js"></script>
</head>
<body>
<div id="app"></div>
<script type="text/babel">
let qs = tools.queryString();
let { useEffect, useMemo } = React;
const { useSetState } = hooks;
function useInputControl (initState) {
const [state, setState] = useSetState(initState);
const bind = key => ({
value: state[key],
onChange: v => setState({[key]: v})
});
return [
state,
setState,
bind
];
}
function Input ({value, onChange, ...others}) {
return (
<div class="form-group">
<input value={value}
onChange={e => onChange(e.target.value)}
class="form-control"
{...others}
/>
</div>
);
}
function getHashResultNumber (hashResult) {
let res = {dec: [], hex: []};
for (let i = 0; i < hashResult.length; i += 2) {
let dext = hashResult[i] + hashResult[i + 1]
let hext = parseInt(dext, 16)
res.dec.push(dext)
res.hex.push(hext)
}
return res;
}
function getResult (resultList) {
const firstStep = resultList[0]/(Math.pow(256, 1));
const secondStep = resultList[1]/(Math.pow(256, 2));
const thirdStep = resultList[2]/(Math.pow(256, 3));
const fourthStep = resultList[3]/(Math.pow(256, 4));
const resultStep = (firstStep + secondStep + thirdStep + fourthStep) * 37;
const result = Math.floor(resultStep);
return {
clscList: [firstStep.toFixed(9), secondStep.toFixed(9), thirdStep.toFixed(9), fourthStep.toFixed(9)],
resultStep: resultStep.toFixed(9),
result
}
}
function RouletteSingle () {
const [state, setState, bind] = useInputControl({
clientSeed: qs.c||'',
serverSeed: qs.s||'',
nonce: qs.n||''
});
const result = useMemo(() => {
const serverSeedHash = tools.sha256(state.serverSeed);
const resultArr = [state.clientSeed, state.nonce];
const hmacSha256Result = String(CryptoJS.HmacSHA256(resultArr.join(":"), state.serverSeed));
const resultList = getHashResultNumber(hmacSha256Result);
const finalResult = getResult(resultList.hex);
return {
serverSeedHash,
hmacSha256Result,
finalResult,
resultList
}
}, [state]);
const {resultList, finalResult} = result;
return (
<div className="main">
<h1 className="text-center pb-5">Roulette single verify</h1>
<hr />
<h2 class="text-center">Input</h2>
<form className="py-5">
<Input placeholder="Server Seed" {...bind('serverSeed')} />
<Input placeholder="Client Seed (Hashed)" {...bind('clientSeed')} />
<Input placeholder="Nonce" {...bind('nonce')} />
</form>
<h2 class="text-center">Output</h2>
<form className="py-5">
<Input placeholder="HmacSHA256(clientSeed, serverSeed)" readOnly value={result.hmacSha256Result} />
<Input placeholder="Result" readOnly value={result.finalResult.result} />
<h5 style={{marginTop: 20}}>Bytes to Number</h5>
<div>
<div>{`(${resultList.dec[0]}, ${resultList.dec[1]}, ${resultList.dec[2]}, ${resultList.dec[3]}) -> [0, ...4] = `}<span className="text-success">{finalResult.result}</span></div>
{resultList.dec.slice(0,4).map((item, index) => {
return (
<div key={index.toString()}>
<span style={{marginRight: index === 0 ? 20 : 10}}>{index === 0 ? "" : "+"}</span>
<span style={{marginRight: 10}}>{finalResult.clscList[index]}</span>
<span>{`( ${resultList.dec[index]} / ( 256 ^ 1 )`}</span>
</div>
)
})}
<div>
<span style={{marginRight: 10}}>=</span>
<span style={{marginRight: 10}}>{finalResult.resultStep}</span>
<span>( * 37 )</span>
</div>
<div>
<span style={{marginRight: 10}}>=</span>
<span style={{marginRight: 10}} className="text-success">{finalResult.result}</span>
</div>
</div>
</form>
</div>
);
}
ReactDOM.render(<RouletteSingle />, document.getElementById("app"));
</script>
</body>
</html>