ssh-browser-keygen/index.html at master · shellac/ssh-browser-keygen · GitHub

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<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <meta name="description" content="">
    <meta name="author" content="">
    <link rel="shortcut icon" href="../../assets/ico/favicon.ico">

    <title>SSH key generation</title>

    <!-- Bootstrap core CSS -->
    <link href="css/bootstrap.min.css" rel="stylesheet">

    <!-- Custom styles for this template -->
    <link href="css/jumbotron-narrow.css" rel="stylesheet">

    <!-- HTML5 shim and Respond.js IE8 support of HTML5 elements and media queries -->
    <!--[if lt IE 9]>
      <script src="https://oss.maxcdn.com/libs/html5shiv/3.7.0/html5shiv.js"></script>
      <script src="https://oss.maxcdn.com/libs/respond.js/1.4.2/respond.min.js"></script>
    <![endif]-->
  </head>

  <body>

    <div class="container">
      <div class="header">
        <h3 class="text-muted">SSH key generation</h3>
      </div>

      <div class="jumbotron">
        <h1>Generate ssh keys</h1>
        <p class="lead">
        This tool will generate SSH key pairs for use in OpenSSH or PuTTY using your
        browser. We hold <strong>no copies</strong> of either your keys or passphrase.
        </p>

        <form class="form-horizontal" role="form">
        <div id="passphraseform" class="form-group has-feedback">
        <div>
        	<p id="passphraseFeedback" class="help-block"></p>
        	<label class="control-label col-md-5" for="passphrase1">Enter passphrase:</label>
        	<div class="col-md-6">
        	<input id="passphrase1" type="password" placeholder="passphrase" class="form-control">
        	<span class="glyphicon glyphicon-warning-sign form-control-feedback"></span>
        	</div>
        </div>
        <div>
        	<label class="control-label col-md-5" for="passphrase2">Enter passphrase:</label>
        	<div class="col-md-6">
        	<input id="passphrase2" type="password" placeholder="passphrase" class="form-control">
        	<span class="glyphicon glyphicon-warning-sign form-control-feedback"></span>
        	</div>
        </div>
        </div>
        <div class="form-group">
        <div>
        	<label class="control-label col-md-5" for="keysize">Key size:</label>
        	<div class="col-md-6">
        	<select id="keysize" class="form-control">
    			<option selected>2048</option>
    			<option>4096</option>
  			</select>
        	</div>
        </div>
        </div>
		</form>
		<p></p>
        <p>
        	<a class="btn btn-lg btn-success" href="#" role="button" id="create">
        	Generate key <span id="progress"></span>
        	</a>
        </p>
      </div>

      <div class="footer">
        <p>&copy; Damian Steer 2014</p>
      </div>

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

    <!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
    <!-- Include all compiled plugins (below), or include individual files as needed -->
    <script src="js/bootstrap.min.js"></script>
    <script src="js/forge.bundle.js"></script>
    <script src="js/FileSaver.js"></script>

    <script>
var rsa = forge.pki.rsa;
var ssh = forge.ssh;

function validate() {
  var requiredLength = 0;
  var pp1 = document.getElementById('passphrase1').value;
  var pp2 = document.getElementById('passphrase2').value;
  if (pp1.length < requiredLength || pp1 !== pp2) {
    document.getElementById("passphraseFeedback").innerHTML = "Passphrases must be at least " + requiredLength + " characters long, and match";
    document.getElementById("passphraseform").className = 'form-group has-error has-feedback';
    return false;
  } else {
    document.getElementById("passphraseFeedback").innerHTML = '';
    document.getElementById("passphraseform").className = 'form-group has-feedback';
    return true;
  }
}

var keys;

function create() {

  if (!validate()) return;

  var passphrase = document.getElementById('passphrase1').value;
  var keysize = parseInt(document.getElementById('keysize').value)

  document.getElementById('progress').className = 'glyphicon glyphicon-refresh spin';
  document.getElementById('create').setAttribute('disabled', true);
  // generate an RSA key pair in steps that attempt to run for a specified period
  // of time on the main JS thread
  var state = rsa.createKeyPairGenerationState(keysize, 0x10001);
  var step = function() {
    // run for 100 ms
    if(!rsa.stepKeyPairGenerationState(state, 100)) {
      console.log('generating');
      setTimeout(step, 1);
    }
    else {
      document.getElementById('progress').className = '';
      document.getElementById('create').removeAttribute('disabled');

      keys = state.keys;

      /* Save keys */

      var unique = '-' + document.domain + '-' + Date.now();

      var blob = new Blob(
      	[ssh.privateKeyToOpenSSH(keys.privateKey, passphrase)],
      	{type: "application/x-pem-key"});

      saveAs(blob, 'id_rsa' + unique);

      blob = new Blob(
      	[ssh.publicKeyToOpenSSH(keys.publicKey, 'Generated by my browser')],
      	{type: "application/octet-stream"});

      saveAs(blob, 'id_rsa' + unique + '.pub');

      blob = new Blob(
      	[ssh.privateKeyToPutty(keys.privateKey, passphrase, 'Generated by my browser')],
      	{type: "application/octet-stream"});

      saveAs(blob, 'id_rsa' + unique + '.ppk');
    }
  };
  // turn on progress indicator, schedule generation to run
  setTimeout(step);
}

document.getElementById('create').addEventListener('click', create);

</script>

  </body>
</html>