dash.html

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Dash Paper Wallet Generator</title>
<meta name="description" content="A lightweight, client-side, reliable, fast, open-source universal paper wallet generator supporting almost every major cryptocurrency">
<meta name="keywords" content="minimal, reliable, fast, universal, paper, wallet, generator, offline, dash, cryptocurrency">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="css/style2.css">
</head>
<body onload=" ">
<div id="container"><br>
<div class="noprint"><button onclick="generate()">Generate a address </button>
<button onclick="window.print()">Print</button>


<a href="index.html"><input type="button" value="Home"/></a></div>

<br>
<div>
<label>My address need include(The longer the custom string, the longer the generation time):</label>
<br>
<input id="SpecifyKeyword" type="" name=""  placeholder="66">
<button onclick="StartCaculate();">Generate customize address</button>
</div>

<table>
<tr><h1 id="titlePaper">Dash Paper Wallet</h1></tr>
<tr><th class="grayHeaders">Public Address <span id="shareColor">(SHARE)</span></th></tr>
<tr><td><div id="public"></div></td></tr>


<tr><td><div id="public_qr"></div></td></tr>
<tr><th class="grayHeaders"><div id="secretLabel">Private Key <span id="secretColor">(SECRET)</span></div></th></tr>
<tr><td><div id="secret"></div></td></tr>
<tr><td><div id="secret_qr"></div></td></tr>
</table>
</div>
<script src="js/bitcoinjs-lib.js"></script>
<script src="js/qrcode.js"></script>
<script>

var StopNow=false;

async function ActiveStopNow() {
 StopNow=true;
}

async function StartCaculate() {
 generate() ;
}

async function generate() {
	document.getElementById("public").textContent = "";
document.getElementById("secret").textContent = "";
document.getElementById("public_qr").textContent = "";
document.getElementById("secret_qr").textContent = "";
const timer = ms => new Promise(res => setTimeout(res, ms)) 
document.getElementById("public").textContent =   "Generating...";


const dash = bitcoin.networks.bitcoin;
dash.pubKeyHash = 0x4c; dash.wif = 0xcc; dash.scriptHash = 0x10;
var keyPair = "";
var pubKey="";
var privKey = "";

var CustomString=document.getElementById('SpecifyKeyword').value;
console.log("CustomString",CustomString );
console.log("CustomString.length",CustomString.length);
 

do {

	 await timer(1); 
	 
var step;

if (StopNow) {
	return;
}
//for (step = 0; step < 5555; step++) {
	  keyPair = bitcoin.ECPair.makeRandom();
    pubKey = keyPair.getAddress();
  privKey = keyPair.toWIF();
   step=step+1;
  

  var LastString = pubKey.substr(pubKey.length - CustomString.length); 
console.log('pubKey:',LastString);

document.getElementById("public").textContent = pubKey;
 
 // if (pubKey.includes("888")) {

  // break;
 // }
} while (!LastString.includes(CustomString));

//}

   console.log('******pubKey:',pubKey);

  document.getElementById("public").textContent = pubKey;
document.getElementById("secret").textContent = privKey;
document.getElementById("public_qr").textContent = "";
document.getElementById("secret_qr").textContent = "";
new QRCode(document.getElementById("public_qr"), {text: pubKey, width: 128, height: 128, correctLevel : QRCode.CorrectLevel.H});
new QRCode(document.getElementById("secret_qr"), {text: privKey, width: 128, height: 128, correctLevel : QRCode.CorrectLevel.H}); 
//document.getElementById("update").textContent = "Latest update: " + document.lastModified;

console.log('complete' );

 
 /*


//console.log("pubKey:",pubKey);
*/

}
</script>
</body>
</html>