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index.html
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<!DOCTYPE html>
<html class="h-100">
<head>
<meta charset='utf-8'>
<meta http-equiv='X-UA-Compatible' content='IE=edge'>
<title>Paper wallet generator for cryptocurrencies (QR codes)</title>
<meta name='viewport' content='width=device-width, initial-scale=1'>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" integrity="sha384-1BmE4kWBq78iYhFldvKuhfTAU6auU8tT94WrHftjDbrCEXSU1oBoqyl2QvZ6jIW3" crossorigin="anonymous">
<script src="https://unpkg.com/@solana/[email protected]/lib/index.iife.min.js"></script>
<script src="js/bs58.bundle.js"></script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/qrcodejs/1.0.0/qrcode.min.js'></script>
</head>
<body class="h-100">
<div class="container-fluid bg-dark h-100 d-print-none">
<div class="container">
<h1 class="text-warning pt-3">Paper wallet generator for cryptocurrencies (QR codes)</h1>
<p class="text-light">All data is processed in the browser. Only you can see this info.</p>
<form class="row my-5">
<div class="col-12 col-md-6 col-lg-4">
<div class="h3 text-light"><span class='text-warning'>1)</span> Select what you want to get:</div>
<select class="form-control" id="desiredOutput">
<optgroup label="Solana (SOL)">
<option value="solana">SOL private key and address</option>
</optgroup>
<optgroup label="Bitcoin (BTC)">
<option value="bitcoin" disabled>BTC private key (WIF) and addresses</option>
</optgroup>
</select>
</div>
<div class="col-12 col-md-6 col-lg-4">
<div class="h3 text-light"><span class='text-warning'>2)</span> Fill -at least- one of the following details:</div>
<label class="text-light" for="secretKey">Private key (Base 58 or raw)</label>
<input class="form-control" type="text" id="secretKey" autocomplete="off">
<a href="#" id="generate-random-pk">Generate random private key</a>
<label class="text-light mt-3" for="seedPhrase">Seed phrase (12 or 24 words)</label>
<input class="form-control" type="text" id="seedPhrase" placeholder="addict coyote enjoy hundred jelly lucky machine..." disabled>
<label class="text-light mt-3" for="seedPhrasePassword">Seed phrase password</label>
<input class="form-control" type="text" id="seedPhrasePassword" placeholder="Empty if no passphrase is needed" disabled>
</div>
<div class="col-12 col-md-6 col-lg-4">
<div class="h3 text-light"><span class='text-warning'>3)</span> Press the green button:</div>
<button class="btn btn-success mt-4" type="submit" id="submit">Generate QRs and print</button>
</div>
</form>
</div>
</div>
<div class="container-fluid" style="background: white;">
<div class="row font-monospace" id="outputDiv"></div>
</div>
<style>
#outputDiv img {
max-width: 100%;
}
</style>
<script>
window.addEventListener("load", () => {
document.getElementById("generate-random-pk").onclick = function(e) {
e.preventDefault();
// SOLANA:
if (document.getElementById("desiredOutput").value == "solana") {
let keypair = solanaWeb3.Keypair.generate(); // new random keypair
document.getElementById("secretKey").value = window.bs58.encode(keypair.secretKey);
}
}
document.getElementById("submit").onclick = (e) => {
e.preventDefault();
var outputDiv = document.getElementById("outputDiv");
outputDiv.innerHTML = '';
// SOLANA:
if (document.getElementById("desiredOutput").value == "solana") {
const private_key = document.getElementById("secretKey").value;
var keypair = undefined;
if (private_key.length == 88) {
keypair = solanaWeb3.Keypair.fromSecretKey(window.bs58.decode(private_key));
} else if ( (private_key.match(/,/g) || []).length == 63) {
keypair = solanaWeb3.Keypair.fromSecretKey(Uint8Array.from(private_key.replace('[', '').replace(']', '').split(',')));
} else {
keypair = solanaWeb3.Keypair.generate(); // new random keypair
}
let title = document.createElement("h1");
title.classList.add('bg-dark', 'text-light', 'py-1', 'mb-3');
title.innerHTML = "Solana KeyPair";
outputDiv.appendChild(title);
// PUBLIC KEY:
let pk_col_1 = document.createElement("div");
pk_col_1.classList.add('col-4', 'mb-3');
new QRCode(pk_col_1, keypair.publicKey.toString());
outputDiv.appendChild(pk_col_1);
let pk_col_2 = document.createElement("div");
pk_col_2.classList.add('col-8', 'mb-3');
pk_col_2.innerHTML = `<h2 class='h3'>Public key <i class='small text-muted'>(address)</i></h2>
<div class='alert alert-success'><b class='text-break' style='font-size:125%;'>${keypair.publicKey.toString()}</b></div>
<p class='small text-muted'><i>This is where someone should send funds to. Feel free of sharing it everywhere. Do not reuse your addresses.</i></p>`;
outputDiv.appendChild(pk_col_2);
// let pk_balance = document.createElement("div");
// pk_balance.classList.add('my-3', 'text-break');
// pk_balance.innerHTML = `<p class='mb-0'>Check current balance and more details on blockchain:</p>
// <p class='mb-0'><a href='https://solscan.io/account/${keypair.publicKey.toString()}'>https://solscan.io/account/${keypair.publicKey.toString()}</a></p>`;
// pk_col_2.appendChild(pk_balance);
// SECRET KEY ALERT:
let sk_alert = document.createElement("div");
sk_alert.classList.add('alert', 'alert-danger', 'text-center');
sk_alert.innerHTML = `<b>Never share your secret key.</b><br>If someone has access to it, they will be able to spend funds.`;
outputDiv.appendChild(sk_alert);
// SECRET KEY (raw):
let sk_raw_col_1 = document.createElement("div");
sk_raw_col_1.classList.add('col-4', 'mb-3');
new QRCode(sk_raw_col_1, '['+keypair.secretKey.toString()+']');
outputDiv.appendChild(sk_raw_col_1);
let sk_raw_col_2 = document.createElement("div");
sk_raw_col_2.classList.add('col-8', 'mb-3');
sk_raw_col_2.innerHTML = `<h2 class='h3'>Secret key <i class='small text-muted'>(raw)</i></h2>
<b>Raw representation of your secret key:</b><br>
<span class='text-break'>[${keypair.secretKey.toString()}]</span>`;
outputDiv.appendChild(sk_raw_col_2);
// SECRET KEY (bs58):
let sk_bs58_col_1 = document.createElement("div");
sk_bs58_col_1.classList.add('col-4', 'mb-3');
new QRCode(sk_bs58_col_1, window.bs58.encode(keypair.secretKey));
outputDiv.appendChild(sk_bs58_col_1);
let sk_bs58_col_2 = document.createElement("div");
sk_bs58_col_2.classList.add('col-8', 'mb-3');
sk_bs58_col_2.innerHTML = `<h2 class='h3'>Secret key <i class='small text-muted'>(Base 58)</i></h2>
<b>Base 58 representation of your secret key:</b><br>
<span class='text-break'>${window.bs58.encode(keypair.secretKey)}</span>`;
outputDiv.appendChild(sk_bs58_col_2);
}
if ("bitcoin") {
//document.getElementById("secretKey").value = 'xxxx';
}
let today = new Date();
let dd = String(today.getDate()).padStart(2, '0');
let mm = String(today.getMonth() + 1).padStart(2, '0'); // January is 0
today = today.getFullYear() + '-' + mm + '-' + dd;
let footer = document.createElement("div");
footer.classList.add('text-center', 'text-muted', 'small', 'mt-3', 'pt-1');
footer.style.cssText = 'border-top: 2px solid #ccc';
footer.innerHTML = `<b>Generated on</b> ${today} <b>by</b> https://simplyjarod.github.io/crypto-paper-wallet/`;
outputDiv.appendChild(footer);
window.print();
}
});
</script>
</body>
</html>