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index.html
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<!doctype html>
<html>
<head>
<title>Simple Password Generator</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, shrink-to-fit=no">
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css"
integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
<script type="text/javascript">
var digitGroupChars = "0123456789";
var consonantGroupChars = "bcdfghjklmnpqrstvwxz";
var vowelGroupChars = "aeiouy";
var letterGroupChars = consonantGroupChars + vowelGroupChars;
var symbolGroupChars = "@#$()<>[]{}^&~+-*/%=\\?!_.,:;";
function onLoad() {
generateAsWord();
generateParameterized();
}
function generateAsWord() {
var length = document.getElementById("word-length").value;
var generator = function () {
return generatePasswordAsWord(length);
}
var count = document.getElementById("word-count").value;
var passwords = generatePasswordArray(count, generator);
var target = document.getElementById("word-container");
target.innerHTML = passwordsToHtmlList(passwords);
}
function generatePasswordAsWord(length) {
var s = generatePasswordCore(consonantGroupChars.toUpperCase());
for (var i = 1; i < length - 1; i++) {
var pattern = (i % 2 === 0) ? consonantGroupChars : vowelGroupChars;
s += generatePasswordCore(pattern);
}
s += generatePasswordCore(symbolGroupChars);
return s;
}
function generateParameterized() {
var locase = document.getElementById("lower-case-factor").value;
var upcase = document.getElementById("upper-case-factor").value;
var digits = document.getElementById("digits-factor").value;
var symbols = document.getElementById("symbols-factor").value;
var chars = getChars(locase, upcase, digits, symbols);
var length = document.getElementById("generic-length").value;
var generator = function () {
return generatePasswordCore(chars, length);
}
var count = document.getElementById("generic-count").value;
var passwords = generatePasswordArray(count, generator);
var target = document.getElementById("generic-container");
target.innerHTML = passwordsToHtmlList(passwords);
}
function getChars(locaseFactor, upcaseFactor, digitsFactor, symbolsFactor) {
if (locaseFactor === 0 && upcaseFactor === 0 && digitsFactor === 0 && symbolsFactor === 0) {
locaseFactor = 1;
upcaseFactor = 1;
digitsFactor = 1;
symbolsFactor = 1;
}
var maxFactor = Math.max(locaseFactor, upcaseFactor, digitsFactor, symbolsFactor);
var upcaseGroupChars = letterGroupChars.toUpperCase();
var result = [];
for (var i = 0; i < maxFactor; i++) {
if (i < digitsFactor) {
result.push(digitGroupChars);
}
if (i < locaseFactor) {
result.push(letterGroupChars);
}
if (i < symbolsFactor) {
result.push(symbolGroupChars);
}
if (i < upcaseFactor) {
result.push(upcaseGroupChars);
}
}
return result.join("");
}
function generatePasswordCore(chars, length) {
length = length || 1;
var array = new Uint16Array(length);
getCrypto().getRandomValues(array);
var res = "";
for (var i = 0; i < length; i++) {
var r = array[i] % chars.length;
res += chars.substring(r, r + 1);
}
return res
.replace("&", "&")
.replace(">", ">")
.replace("<", "<");
}
function getCrypto() {
var cryptoObj = window.crypto || window.msCrypto;
if (cryptoObj == null) {
alert("Sorry, but your browser does not support cryptography API.");
}
return cryptoObj;
}
function generatePasswordArray(count, generator) {
var a = [];
for (var i = 0; i < count; i++) {
a.push(generator());
}
return a;
}
function passwordsToHtmlList(passwords) {
var result = "<ul>";
passwords.forEach(function (p) {
result += "<li><samp>" + p + "</samp></li>";
});
result += "</ul>";
return result;
}
</script>
</head>
<body onload="onLoad();">
<div class="container">
<nav class="navbar navbar-dark bg-dark">
<span class="navbar-brand h1">Password Generator</span>
</nav>
<div class="row">
<div class="col-md mt-4">
<div class="card">
<div class="card-header">
<h5>As a word</h5>
<small>
Contains characters from 3 groups: upper case, lower case and symbols. Easy to remember, if
contains up to 6 syllables (13 chars), but still hard to hack using dictionary, since it is
not a real word.
</small>
</div>
<div class="card-body">
<form>
<div class="form-group row">
<label for="word-length" class="col-form-label col">Length</label>
<input id="word-length" name="word-length" class="form-control col" type="number"
min="5" max="20" step="1" defaultValue="10" value="10" required>
</div>
<div class="form-group row">
<label for="word-count" class="col-form-label col">Count</label>
<input id="word-count" name="word-count" class="form-control col" type="number" min="1"
max="20" step="1" defaultValue="5" value="5" required>
</div>
<button type="button" class="btn btn-outline-dark"
onclick="generateAsWord();">Generate</button>
</form>
<hr />
<div id="word-container"></div>
</div>
</div>
</div>
<div class="col-md mt-4">
<div class="card">
<div class="card-header">
<h5>Parameterized</h5>
<small>
You can tune up different char groups propotions using the multipliers below. Specifying
the zero value will exclude corresponding group from the generation.
</small>
</div>
<div class="card-body">
<form>
<div class="form-group row">
<label for="lower-case-factor" class="col-form-label col">Lower Case Factor</label>
<input id="lower-case-factor" name="lower-case-factor" class="form-control col"
type="number" min="0" max="20" step="1" defaultValue="2" value="2" required>
</div>
<div class="form-group row">
<label for="upper-case-factor" class="col-form-label col">Upper Case Factor</label>
<input id="upper-case-factor" name="upper-case-factor" class="form-control col"
type="number" min="0" max="20" step="1" defaultValue="2" value="2" required>
</div>
<div class="form-group row">
<label for="digits-factor" class="col-form-label col">Digits Factor</label>
<input id="digits-factor" name="digits-factor" class="form-control col" type="number"
min="0" max="20" step="1" defaultValue="4" value="4" required>
</div>
<div class="form-group row">
<label for="symbols-factor" class="col-form-label col">Symbols Factor</label>
<input id="symbols-factor" name="symbols-factor" class="form-control col" type="number"
min="0" max="20" step="1" defaultValue="0" value="0" required>
</div>
<div class="form-group row">
<label for="generic-length" class="col-form-label col">Length</label>
<input id="generic-length" name="generic-length" class="form-control col" type="number"
min="5" max="100" step="1" defaultValue="10" value="10" required>
</div>
<div class="form-group row">
<label for="generic-count" class="col-form-label col">Count</label>
<input id="generic-count" name="generic-count" class="form-control col" type="number"
min="1" max="20" step="1" defaultValue="5" value="5" required>
</div>
<button type="button" class="btn btn-outline-dark"
onclick="generateParameterized();">Generate</button>
</form>
<hr />
<p id="generic-container"></p>
</div>
</div>
</div>
</div>
</div>
</body>
</html>