2017-04-29 13:14:06 +00:00
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<!doctype html>
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<html>
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<head>
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<meta charset="utf-8">
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2017-06-15 10:32:45 +00:00
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<title>StatiCrypt: Password protect static HTML</title>
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2017-04-29 13:14:06 +00:00
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<meta name="description" content="">
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2017-06-17 18:44:00 +00:00
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href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css"
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integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u"
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crossorigin="anonymous">
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2017-06-14 14:19:24 +00:00
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color: inherit;
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body {
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font-size: 16px;
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2017-06-15 15:48:20 +00:00
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font-weight: normal;
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2017-06-14 14:19:24 +00:00
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2017-06-14 15:22:24 +00:00
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2017-04-29 13:14:06 +00:00
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</head>
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<body>
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<div class="container">
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<div class="row">
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<div class="col-xs-12">
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2017-06-14 14:19:24 +00:00
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<h1>
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StatiCrypt
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<div class="pull-right">
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<iframe src="https://ghbtns.com/github-btn.html?user=robinmoisson&repo=staticrypt&type=star&size=large"
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frameborder="0" scrolling="0" width="80px" height="30px"></iframe>
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<iframe src="https://ghbtns.com/github-btn.html?user=robinmoisson&repo=staticrypt&type=fork&size=large"
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frameborder="0" scrolling="0" width="80px" height="30px"></iframe>
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</div>
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<br>
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<small>Password protect a static HTML page</small>
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</h1>
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<p>
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Based on the <a href="https://github.com/brix/crypto-js">crypto-js library</a>, StatiCrypt uses AES-256
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to encrypt your string with your passphrase in your browser (client side).
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</p>
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2017-04-29 13:14:06 +00:00
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<p>
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2017-06-14 15:22:24 +00:00
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Download your encrypted string in a HTML page with a password prompt you can upload anywhere (see <a
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target="_blank" href="example.html">example</a>).
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2017-04-29 13:14:06 +00:00
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</p>
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2017-06-14 14:19:24 +00:00
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<br>
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2017-06-14 15:22:24 +00:00
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<h4><a class="no-style" id="toggle-concept" href="#">HOW IT WORKS ►</a></h4>
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2017-06-14 14:19:24 +00:00
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<div id="concept" class="hidden">
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<p>
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StatiCrypt generates a static, password protected page that can be decrypted in-browser:
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2017-06-15 11:21:59 +00:00
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just send or upload the generated page to a place serving static content (github pages, for example)
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2017-06-14 14:19:24 +00:00
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and you're done: the javascript will prompt users for password, decrypt the page and load your HTML.
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</p>
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<p>
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2017-06-15 11:21:59 +00:00
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<b class="text-danger">Disclaimer</b> TL;DR: if you have extra sensitive banking data, you should probably
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2017-06-14 15:22:24 +00:00
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use something else :)
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2017-06-14 14:19:24 +00:00
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</p>
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<p>
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2017-06-14 15:26:37 +00:00
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StatiCrypt basically encrypts your page and puts everything with a user-friendly way to use a password
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in the new file.
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<br>AES-256 is state of the art but <b>brute-force/dictionary attacks would be trivial to
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2017-06-14 14:19:24 +00:00
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do at a really fast pace: use a long, unusual passphrase !</b>
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</p>
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<p>
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The concept is simple but this is a side project - not purporting to be bulletproof, feel free to
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contribute or report any thought to the <a href="https://github.com/robinmoisson/staticrypt">GitHub
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project</a> !
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</p>
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</div>
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2017-06-14 15:22:24 +00:00
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<br>
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2017-04-29 13:14:06 +00:00
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</div>
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</div>
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<div class="row">
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<div class="col-xs-12">
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<form id="encrypt_form">
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<div class="form-group">
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<label for="passphrase">Passphrase</label>
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<input type="password" class="form-control" id="passphrase"
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placeholder="Passphrase (choose a long one!)">
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</div>
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<div class="form-group">
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2017-06-14 14:19:24 +00:00
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<label for="unencrypted_html">HTML/string to encrypt</label>
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2017-06-14 15:22:24 +00:00
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<textarea class="form-control" id="unencrypted_html" placeholder="<html><head>..."
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rows="5"></textarea>
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2017-04-29 13:14:06 +00:00
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</div>
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2017-06-14 14:19:24 +00:00
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<p>
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<a href="#" id="toggle-extra-option">+ More options</a>
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</p>
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<div id="extra-options" class="hidden">
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<div class="form-group">
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<label for="title">Page title</label>
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<input type="text" class="form-control" id="title" placeholder="Default: 'Protected Page'">
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</div>
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<div class="form-group">
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<label for="instructions">Instructions to display the user</label>
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<textarea class="form-control" id="instructions" placeholder="Default: nothing."></textarea>
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</div>
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2017-04-29 13:14:06 +00:00
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</div>
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2017-06-15 15:48:20 +00:00
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<div class="form-group">
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<label class="no-style">
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<input type="checkbox" id="embed-crypto" checked>
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Embed crypto-js into your file
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<abbr title="Leave checked to include crypto-js into your file so you can decrypt it offline. Uncheck to load crypto-js from a CDN.">?</abbr>
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</label>
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</div>
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2017-06-14 14:19:24 +00:00
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<button class="btn btn-primary pull-right" type="submit">Generate passphrase protected HTML</button>
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2017-04-29 13:14:06 +00:00
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</form>
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</div>
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</div>
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<div class="row">
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<div class="col-xs-12">
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<h2>Encrypted HTML</h2>
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2017-06-15 10:27:47 +00:00
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<p><a class="btn btn-success download"
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download="encrypted.html"
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id="download-link"
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disabled="disabled">Download html file with password prompt</a></p>
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2017-04-29 13:14:06 +00:00
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<pre id="encrypted_html_display">
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Your encrypted string</pre>
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2017-04-29 13:14:06 +00:00
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</div>
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</div>
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</div>
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2017-06-15 15:49:45 +00:00
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<script src="https://cdnjs.cloudflare.com/ajax/libs/crypto-js/3.1.9-1/crypto-js.min.js"
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integrity="sha384-lp4k1VRKPU9eBnPePjnJ9M2RF3i7PC30gXs70+elCVfgwLwx1tv5+ctxdtwxqZa7"
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crossorigin="anonymous"></script>
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2017-04-29 13:14:06 +00:00
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<script>
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2017-06-15 10:20:19 +00:00
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var htmlToDownload;
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2017-06-15 05:36:09 +00:00
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var renderTemplate = function (tpl, data) {
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return tpl.replace(/{(.*?)}/g, function (_, key) {
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return data && data[key] || '';
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});
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};
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2017-04-29 13:14:06 +00:00
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2017-06-15 15:48:20 +00:00
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/**
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* Fill the password prompt template with data provided.
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* @param data
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*/
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var setFileToDownload = function (data) {
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var request = new XMLHttpRequest();
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request.open('GET', 'password_template.html', true);
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request.onload = function() {
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var renderedTmpl = renderTemplate(request.responseText, data);
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2017-04-29 13:14:06 +00:00
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2017-06-15 05:36:09 +00:00
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var downloadLink = document.querySelector('a.download');
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downloadLink.href = 'data:text/html,' + encodeURIComponent(renderedTmpl);
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downloadLink.removeAttribute('disabled');
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2017-06-15 10:20:19 +00:00
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htmlToDownload = renderedTmpl;
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2017-04-29 13:14:06 +00:00
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};
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request.send();
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};
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2017-04-29 13:14:06 +00:00
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2017-06-15 15:48:20 +00:00
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/**
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* Download crypto-js lib to embed it in the generated file, update the file when done.
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* @param data
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*/
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var setFileToDownloadWithEmbeddedCrypto = function (data) {
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var request = new XMLHttpRequest();
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request.open('GET', 'https://cdnjs.cloudflare.com/ajax/libs/crypto-js/3.1.9-1/crypto-js.min.js', true);
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request.onload = function() {
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data['crypto_tag'] = '<script>' + request.responseText + '</scr' + 'ipt>';
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setFileToDownload(data);
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};
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request.send();
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};
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/**
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* Handle form submission.
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*/
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2017-06-15 05:36:09 +00:00
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document.getElementById('encrypt_form').addEventListener('submit', function (e) {
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e.preventDefault();
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2017-04-29 13:14:06 +00:00
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2017-06-15 05:36:09 +00:00
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var unencrypted = document.getElementById('unencrypted_html').value;
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var passphrase = document.getElementById('passphrase').value;
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2017-04-29 13:14:06 +00:00
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2017-06-15 05:36:09 +00:00
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var encrypted = CryptoJS.AES.encrypt(unencrypted, passphrase);
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var hmac = CryptoJS.HmacSHA256(encrypted.toString(), CryptoJS.SHA256(passphrase)).toString();
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var encryptedMsg = hmac + encrypted;
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2017-04-29 13:14:06 +00:00
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2017-06-15 05:36:09 +00:00
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var pageTitle = document.getElementById('title').value.trim();
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var instructions = document.getElementById('instructions').value;
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var data = {
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title: pageTitle ? pageTitle : 'Protected Page',
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instructions: instructions ? instructions : '',
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2017-06-15 15:48:20 +00:00
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encrypted: encryptedMsg,
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crypto_tag: '<script src="https://cdnjs.cloudflare.com/ajax/libs/crypto-js/3.1.9-1/crypto-js.min.js" integrity="sha384-lp4k1VRKPU9eBnPePjnJ9M2RF3i7PC30gXs70+elCVfgwLwx1tv5+ctxdtwxqZa7" crossorigin="anonymous"></scr' + 'ipt>'
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};
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2017-04-29 13:14:06 +00:00
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2017-06-15 05:36:09 +00:00
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document.getElementById('encrypted_html_display').textContent = encryptedMsg;
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2017-06-14 14:19:24 +00:00
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2017-06-15 15:48:20 +00:00
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if (document.getElementById("embed-crypto").checked) {
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setFileToDownloadWithEmbeddedCrypto(data);
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}
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else {
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setFileToDownload(data);
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}
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2017-06-15 05:36:09 +00:00
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});
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2017-06-14 14:19:24 +00:00
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2017-06-15 05:36:09 +00:00
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document.getElementById('toggle-extra-option')
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.addEventListener('click', function (e) {
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e.preventDefault();
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document.getElementById('extra-options').classList.toggle('hidden');
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});
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2017-06-14 14:19:24 +00:00
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2017-06-15 05:36:09 +00:00
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document.getElementById('toggle-concept')
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.addEventListener('click', function (e) {
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e.preventDefault();
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document.getElementById('concept').classList.toggle('hidden');
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});
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2017-06-15 10:20:19 +00:00
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2017-06-15 15:48:20 +00:00
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/**
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* Browser specific download code.
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*/
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document.getElementById('download-link')
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.addEventListener('click', function (e) {
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var isIE = (navigator.userAgent.indexOf("MSIE") !== -1 ) || (!!document.documentMode === true ); // >= 10
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var isEdge = navigator.userAgent.indexOf("Edge") !== -1;
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// download with MS specific feature
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if (htmlToDownload && (isIE || isEdge)) {
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e.preventDefault();
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var blobObject = new Blob([htmlToDownload]);
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window.navigator.msSaveOrOpenBlob(blobObject, 'encrypted.html');
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}
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return true;
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})
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</script>
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</body>
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</html>
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