hat.sh/about.html at v1.5 · dstettler/hat.sh · GitHub

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<!doctype html>
<html lang="en">

<head>
    <!-- Required meta tags -->
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">

    <link rel="stylesheet" href="src/css/style.css">

    <title>About Hat.sh | Hat.sh | The Hat Project</title>
    <meta name="Description" content="Encrypt and decrypt files securely in your browser using the AES 256 algorithm.">
    <meta name="Keywords"
        content="encrypt decrypt encryption file-encryption javascript client-side serverless decryption aes aes-encryption aes-256 aes-128 encryption-decryption webcrypto webcryptoapi crypto browser in-browser">

</head>

<body>

    <ul class="nav justify-content-end">
        <li class="nav-item">
            <a class="nav-link disabled" href="index.html">Home</a>
        </li>
        <li class="nav-item">
            <a class="nav-link disabled" target="_blank" href="https://ko-fi.com/shdvapps">Donate</a>
        </li>
        <li class="nav-item">
            <a class="nav-link disabled" href="https://github.com/sh-dv/hat.sh" target="_blank"><i
                    class="fab fa-github fa-lg"></i></a>
        </li>
        <li class="nav-item">
            <a class="nav-link disabled"
                href="https://twitter.com/intent/tweet?original_referer=https%3A%2F%2Fpublish.twitter.com%2F%3FbuttonType%3DTweetButton%26widget%3DButton&ref_src=twsrc%5Etfw&text=Check%20Out%20This%20File%20Encryption%20app%20App:%20https://hat.sh"
                target="_blank"><i class="fab fa-twitter fa-lg"></i></a>
        </li>
    </ul>


    <div class="jumbotron jumbotron-fluid bg-light">
        <div class="container">
            <h2 class="display-4 title">About <a href="index.html">Hat.sh</a></h2>
        </div>
    </div>

    <div class="container">

        <div class="col-sm-12">

            <p class="lead">
                Hat.sh is a Javascript app that provides secure file encryption using the <a
                    href="https://www.w3.org/TR/WebCryptoAPI/#aes-gcm">AES-256-GCM</a> algorithm from the <a href="https://www.w3.org/TR/WebCryptoAPI/#aes-gcm">WebCryptoAPI</a> included in your browser.
                <br><br>
                It's <u>fast</u>, <u>secure</u> and runs <u>locally</u> - the app never uploads any files to the
                server.
                <br><br>
                To encrypt a file, click <u>Browse</u>, select a file, <u>type</u> in a password or
                <u>generate</u> one using the built-in password generator, and then press <u>Encrypt</u>. Within a few seconds, the encrypted file will be ready to download.
            </p>
        </div>
    </div>

    <div class="jumbotron jumbotron-fluid bg-light">
        <div class="container">
            <h2 class="display-4 title">How does it work?</h2>
        </div>
    </div>

    <div class="container">
        <div class="col-sm-12">
            <div class="card-group">
                <div class="card">
                    <div class="card-body">
                        <h5 class="card-title">Password</h5>
                        <p class="card-text">An encryption key is derived from the
                            given password
                            using the PBKDF2-SHA512 algorithm.</p>
                        <p class="card-text">
                            <center><b>1</b></center>
                        </p>
                    </div>
                </div>
                <div class="card">
                    <div class="card-body">
                        <h5 class="card-title">Key Derivation</h5>
                        <p class="card-text">PBKDF2 uses a random 128-bit salt and 80,000 iterations
                            to generate a unique 256-bit encryption key.<br><small
                                class="text-muted">(pjRxtpw3j3IQV2wsTzuj7QlThozYCKlIc28PX..)</small></p>
                        <p class="card-text">
                            <center><b>2</b></center>
                        </p>
                    </div>
                </div>
                <div class="card">
                    <div class="card-body">
                        <h5 class="card-title">Encryption</h5>
                        <p class="card-text">The file is read into memory and encrypted using AES-GCM with the generated key and a 128-bit random nonce.</p>
                        <p class="card-text">
                            <center><b>3</b></center>
                        </p>
                    </div>
                </div>
            </div>
        </div>
    </div>

    <br>

    <div class="jumbotron jumbotron-fluid bg-light">
        <div class="container">
            <h2 class="display-4 title">FAQ</h2>
        </div>
    </div>

    <div class="container">
        <div class="col-sm-12">
            <h5>Does Hat.sh log or store any of my data?</h5>
                <p><b>NO</b>, Hat.sh never stores any of your data. The program runs locally in your browser.</p>
                <br>
                <h5>Is Hat.sh free?</h5>
                    <p><b>YES</b>, Hat.sh is free and always will be. However, please consider <a
                            href="https://ko-fi.com/shdvapps">donating</a> to support the project.</p>
                    <br>
                    <h5>How do I use Hat.sh?</h5>
                        <p>It's very simple, browse for a file, generate a password or type one, click the <b>Encrypt</b> or <b>Decrypt</b> button.</p>
                        <br>
                        <h5>Which file types are supported? Is there a file size limit?</h5>
                            <p>Hat.sh accepts all file types. There's no file size limit, meaning files of any size can be encrypted, depending on how much size your RAM can hold. (usually around 2.5GB).</p>
                            <br>
                            <h5>Is Hat.sh secure?</h5>
                                <p>Yes, the app encrypts files using the <a
                                        href="https://www.w3.org/TR/WebCryptoAPI/#aes-gcm">AES-GCM</a> algorithm
                                    provided by the WebCryptoAPI. Everything is done offline in your browser - no data
                                    is sent to any server.</p>
                                <br>
                                <h5>I forgot my password, can I still decrypt my files?</h5>
                                    <p><B>NO</B>, we don't know your password. Make sure you remember your password before encrypting any files.</p>
                                    </p>
                                    <br>
                                    <h5>How can I contribute?</h5>
                                    <p>Hat.sh is an <a href="https://github.com/sh-dv/hat.sh">open-source application</a>. You can help make it better by making commits on GitHub. The project is
                                        maintained in my free time. Donations of any size are appreciated.</p>
                                    <br>
        </div>


        <!-- end col -->

    </div>
    <!-- end container -->

    <div class="footer">
        <nav class="navbar  navbar-light bg-light">
            <ul class="nav navbar-nav mx-auto">
                <li class="nav-item">
                    <div class="nav-link">built and developed with <i class="fas fa-heart" style="color:#e74c3c;"></i>
                        by <a href="https://github.com/sh-dv" class="text-dark"> sh-dv.</a>
                        <br> BTC: <a href="bitcoin:bc1qh0lmuj34h2z4kr7j2sx8fegqvvaj35ycdtglw2"
                            class="text-white bg-secondary">bc1qh0lmuj34h2z4kr7j2sx8fegqvvaj35ycdtglw2</a></div>
                </li>
            </ul>
        </nav>
    </div>
</body>

</html>