kopia lustrzana https://github.com/robinmoisson/staticrypt
359 wiersze
15 KiB
HTML
359 wiersze
15 KiB
HTML
<!doctype html>
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<html>
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<head>
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<meta charset="utf-8">
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<title>StatiCrypt: Password protect static HTML</title>
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<meta name="description" content="">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<link rel="stylesheet"
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type="text/css"
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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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<style>
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a.no-style {
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color: inherit;
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text-decoration: inherit;
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}
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body {
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font-size: 16px;
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}
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label.no-style {
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font-weight: normal;
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}
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</style>
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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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<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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StatiCrypt uses AES-256 with WebCrypto to encrypt your html string with your long password, in your browser (client side).
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</p>
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<p>
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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/encrypted/example.html">example</a>).
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</p>
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<p>
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The tool is also available as <a href="https://npmjs.com/package/staticrypt">a CLI on NPM</a> and is <a
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href="https://github.com/robinmoisson/staticrypt">open source on GitHub</a>.
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</p>
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<br>
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<h4>
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<a class="no-style" id="toggle-concept" href="#">
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<span id="toggle-concept-sign">►</span> HOW IT WORKS
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</a>
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</h4>
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<div id="concept" class="hidden">
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<p>
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<b class="text-danger">Disclaimer</b> if you are an at-risk activist, or have extra sensitive
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banking data, you should probably use something else!
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</p>
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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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just send or upload the generated page to a place serving static content (github pages, for example)
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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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The page is encrypted with AES-256 in CBC mode (see why this mode is appropriate for StatiCrypt in
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<a href="https://github.com/robinmoisson/staticrypt/issues/19">#19</a>). The password is hashed with
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PBKDF2 (599k iterations with SHA-256, plus 1k with SHA-1 for legacy reasons (see
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<a href="https://github.com/robinmoisson/staticrypt/issues/159">#159</a>), for the added
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<a href="https://cheatsheetseries.owasp.org/cheatsheets/Password_Storage_Cheat_Sheet.html#pbkdf2">recommended
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total</a> of 600k) and used to encrypt the page.
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</p>
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<p>
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It basically encrypts your page and puts everything with a user-friendly way to use a password
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in the new file. AES-256 is state of the art but <b>brute-force/dictionary attacks would be easy to
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do at a really fast pace: use a long, unusual password!</b>
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<br/> => To be safe, we recommend 16+ alphanum characters, and using a password manager like the
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open-source <a href="http://bitwarden.com">Bitwarden</a>.
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</p>
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<p>
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Feel free to contribute or report any thought to the
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<a href="https://github.com/robinmoisson/staticrypt">GitHub project</a>.
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</p>
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</div>
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<br>
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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">Password</label>
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<input type="password" class="form-control" id="passphrase"
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placeholder="Password (choose a long one!)">
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</div>
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<div class="form-group">
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<label for="unencrypted_html">HTML/string to encrypt</label>
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<textarea class="form-control"
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id="unencrypted_html"
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placeholder="<html><head>..."
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rows="5"></textarea>
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</div>
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<div class="form-group">
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<label class="no-style">
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<input type="checkbox" id="remember" checked>
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Add "Remember me" checkbox (append <code>#staticrypt_logout</code> to your URL to logout)
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<small>
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<abbr class="text-muted"
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title="The password will be stored in clear text in the browser's localStorage upon entry by the user. See "More options" to set the expiration (default: none)">
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(?)
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</abbr>
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</small>
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</label>
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</div>
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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="template_title">Page title</label>
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<input type="text" class="form-control" id="template_title" placeholder="Default: 'Protected Page'">
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</div>
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<div class="form-group">
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<label for="template_instructions">Instructions to display the user</label>
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<textarea class="form-control" id="template_instructions" placeholder="Default: nothing."></textarea>
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</div>
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<div class="form-group">
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<label for="template_placeholder">Passphrase input placeholder</label>
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<input type="text" class="form-control" id="template_placeholder"
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placeholder="Default: 'Passphrase'">
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</div>
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<div class="form-group">
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<label for="template_remember">"Remember me" checkbox label</label>
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<input type="text" class="form-control" id="template_remember" placeholder="Default: 'Remember me'">
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</div>
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<div class="form-group">
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<label for="remember_in_days">"Remember me" expiration in days</label>
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<input type="number"
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class="form-control"
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id="remember_in_days"
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step="any"
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placeholder="Default: 0 (no expiration)">
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<small class="form-text text-muted">
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After this many days, the user will have to enter the passphrase again. Leave empty or set
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to 0 for no expiration.
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</small>
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</div>
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<div class="form-group">
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<label for="template_button">Decrypt button label</label>
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<input type="text" class="form-control" id="template_button" placeholder="Default: 'DECRYPT'">
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</div>
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</div>
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<button class="btn btn-primary pull-right" type="submit">Generate passphrase protected HTML</button>
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</form>
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</div>
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</div>
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<div class="row mb-5">
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<div class="col-xs-12">
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<h2>Encrypted HTML</h2>
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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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<pre id="encrypted_html_display">
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Your encrypted string</pre>
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</div>
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</div>
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</div>
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<script src="https://cdn.ckeditor.com/4.7.0/standard/ckeditor.js"></script>
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<script id="cryptoEngine">
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window.cryptoEngine = /*[|js_crypto_engine|]*/0
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</script>
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<script id="codec">
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window.codec = /*[|js_codec|]*/0
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</script>
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<script id="formater">
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window.formater = /*[|js_formater|]*/0
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</script>
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<script id="staticrypt">
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window.staticrypt = /*[|js_staticrypt|]*/0
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</script>
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<script>
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const encode = codec.init(cryptoEngine).encode;
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// enable CKEDIRTOR
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CKEDITOR.replace('template_instructions');
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let htmlToDownload;
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/**
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* Extract js code from <script> tag and return it as a string
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*
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* @param {string} id
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* @returns {string}
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*/
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function getScriptAsString(id) {
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return document.getElementById(id)
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.innerText.replace(/window\.\w+ = /, '');
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}
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/**
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* Register something happened - this uses a simple Supabase function to implement a counter, and allows to drop
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* google analytics. We don't store any personal data or IP.
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*
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* @param {string} action
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*/
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function trackEvent(action) {
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const xhr = new XMLHttpRequest();
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xhr.open('POST', 'https://zlgpaemmniviswibzuwt.supabase.co/rest/v1/rpc/increment_analytics', true);
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xhr.setRequestHeader('Content-type', 'application/json; charset=UTF-8')
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xhr.setRequestHeader('apikey', 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJzdXBhYmFzZSIsInJlZiI6InpsZ3BhZW1tbml2aXN3aWJ6dXd0Iiwicm9sZSI6ImFub24iLCJpYXQiOjE2NjkxMjM0OTcsImV4cCI6MTk4NDY5OTQ5N30.wNoVDHG7F6INx-IPotMs3fL1nudfaF2qvQDgG-1PhNI')
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xhr.setRequestHeader('Authorization', 'Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJzdXBhYmFzZSIsInJlZiI6InpsZ3BhZW1tbml2aXN3aWJ6dXd0Iiwicm9sZSI6ImFub24iLCJpYXQiOjE2NjkxMjM0OTcsImV4cCI6MTk4NDY5OTQ5N30.wNoVDHG7F6INx-IPotMs3fL1nudfaF2qvQDgG-1PhNI')
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xhr.send(
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JSON.stringify({
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action_input: action
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}
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));
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}
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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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function setFileToDownload (data) {
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const request = new XMLHttpRequest();
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request.open('GET', 'lib/password_template.html', true);
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request.onload = function () {
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const renderedTmpl = formater.renderTemplate(request.responseText, data);
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const 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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htmlToDownload = renderedTmpl;
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};
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request.send();
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}
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// register page load
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window.onload = function () {
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trackEvent('show_index');
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};
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/**
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* Handle form submission.
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*/
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document.getElementById('encrypt_form').addEventListener('submit', async function (e) {
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e.preventDefault();
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trackEvent('generate_encrypted');
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// update instruction textarea value with CKEDITOR content
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// (see https://stackoverflow.com/questions/3147670/ckeditor-update-textarea)
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CKEDITOR.instances['template_instructions'].updateElement();
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const unencrypted = document.getElementById('unencrypted_html').value,
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passphrase = document.getElementById('passphrase').value;
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const salt = cryptoEngine.generateRandomSalt();
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const encryptedMsg = await encode(unencrypted, passphrase, salt);
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const templateButton = document.getElementById('template_button').value,
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templateInstructions = document.getElementById('template_instructions').value,
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isRememberEnabled = document.getElementById('remember').checked,
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templateTitle = document.getElementById('template_title').value.trim(),
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templatePlaceholder = document.getElementById('template_placeholder').value.trim(),
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rememberDurationInDays = document.getElementById('remember_in_days').value || 0,
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templateRemember = document.getElementById('template_remember').value;
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const data = {
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staticrypt_config: {
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encryptedMsg,
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isRememberEnabled,
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rememberDurationInDays,
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salt,
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},
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is_remember_enabled: JSON.stringify(isRememberEnabled),
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js_staticrypt: getScriptAsString('staticrypt'),
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template_button: templateButton ? templateButton : 'DECRYPT',
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template_instructions: templateInstructions || '',
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template_placeholder: templatePlaceholder || 'Passphrase',
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template_remember: templateRemember || 'Remember me',
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template_title: templateTitle || 'Protected Page',
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};
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document.getElementById('encrypted_html_display').textContent = encryptedMsg;
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setFileToDownload(data);
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});
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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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let isConceptShown = false;
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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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isConceptShown = !isConceptShown;
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document.getElementById('toggle-concept-sign').innerText = isConceptShown ? '▼' : '►';
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document.getElementById('concept').classList.toggle('hidden');
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});
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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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// only register the click event if there is actually a generated file
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if (htmlToDownload) {
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trackEvent('download_encrypted');
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}
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const isIE = (navigator.userAgent.indexOf("MSIE") !== -1) || (!!document.documentMode === true); // >= 10
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const 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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const 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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