jasrasr.github.io/generate-password.html at main · jasrasr/jasrasr.github.io · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
<!--
asdf
-->
  <meta charset="UTF-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  <title>Password Generator Rev 3.10</title>
  <style>
    html, body {
      height: 100%;
      margin: 0;
    }
    body {
      font-family: Arial, sans-serif;
      display: flex;
      justify-content: center;
      align-items: start;
      padding: 40px 20px;
      background-color: #f0f0f0;
      overflow-y: auto;
      box-sizing: border-box;
    }
    .container {
      background-color: #fff;
      padding: 20px;
      border-radius: 8px;
      box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
      text-align: center;
      width: 90%;
      max-width: 400px;
      transition: max-height 0.3s ease;
    }
    #featureSection {
      display: none;
    }
    input[type="text"] {
      width: 100%;
      padding: 10px;
      margin: 10px 0;
      font-size: 16px;
      border: 1px solid #ccc;
      border-radius: 4px;
    }
    input[type="range"] {
      width: 100%;
    }
    .options {
      text-align: left;
      margin: 10px 0;
    }
    .options label {
      display: block;
      margin: 5px 0;
    }
    button {
      padding: 10px 20px;
      font-size: 16px;
      cursor: pointer;
      background-color: #007BFF;
      color: #fff;
      border: none;
      border-radius: 5px;
      margin-top: 10px;
    }
    button:hover {
      background-color: #0056b3;
    }
    #copyMessage {
      font-size: 14px;
      color: green;
      margin-top: 4px;
      display: none;
    }
    #strengthMeter {
      height: 10px;
      width: 100%;
      background: #eee;
      border-radius: 5px;
      overflow: hidden;
      margin-top: 10px;
    }
    #strengthBar {
      height: 100%;
      width: 0%;
      background: red;
      transition: width 0.3s ease;
    }
    #strengthText {
      font-size: 14px;
      margin-top: 6px;
    }
    #toggleFeatures {
      background: none;
      border: none;
      color: #007BFF;
      font-size: 16px;
      cursor: pointer;
      text-decoration: underline;
      margin-top: 20px;
    }
    #toggleFeatures:hover {
      color: #0056b3;
    }
    #historyList {
      margin-top: 20px;
      text-align: left;
      font-size: 14px;
    }
    #historyList li {
      font-family: monospace;
      padding: 2px 0;
    }
    .copy-icon {
      margin-left: 10px;
      color: #007BFF;
      cursor: pointer;
    }
    .copy-text {
      margin-left: 5px;
      color: #007BFF;
      cursor: pointer;
      text-decoration: underline;
    }
    .timestamp {
      display: block;
      font-size: 12px;
      color: #666;
    }
    #clearHistoryBtn {
      margin-top: 10px;
      background-color: #dc3545;
    }
    #clearHistoryBtn:hover {
      background-color: #a92834;
    }
  </style>
</head>
<body>
  <div class="container">
    <h1>Password Generator</h1>
    <input type="text" id="password" readonly placeholder="Your Secure Password" aria-live="polite">
    <div id="copyMessage">Password copied!</div>
    <button onclick="copyPassword()">Copy</button>

    <div id="strengthMeter"><div id="strengthBar"></div></div>
    <div id="strengthText"></div>

    <div class="options">
      <label>Password Length: <span id="lengthValue">16</span></label>
      <input type="range" id="lengthSlider" min="8" max="256" value="16">
      <label><input type="checkbox" id="includeUppercase" checked> Include Uppercase Letters</label>
      <label><input type="checkbox" id="includeLowercase" checked> Include Lowercase Letters</label>
      <label><input type="checkbox" id="includeNumbers" checked> Include Numbers</label>
      <label><input type="checkbox" id="includeSymbols" checked> Include Symbols</label>
      <label><input type="checkbox" id="excludeAmbiguous" checked> Exclude Ambiguous /\|IiLl1oO0</label>
      <label><input type="checkbox" id="excludeExtraSpecial" checked> Exclude Extra Special ()_`|}{[]:;.,/</label>
    </div>
    <button id="generateButton">Generate Password</button>

    <ul id="historyList"></ul>
    <button id="clearHistoryBtn" onclick="clearHistory()">Clear History</button>

    <div id="featureWrapper">
      <button id="toggleFeatures" onclick="toggleFeatureSection()">▶ Show Features</button>
      <div id="featureSection">
        <!-- feature content remains unchanged -->
      </div>
    </div>
  </div>

  <script>
    document.addEventListener('DOMContentLoaded', () => {
      const slider = document.getElementById('lengthSlider');
      const inputs = document.querySelectorAll('#includeUppercase, #includeLowercase, #includeNumbers, #includeSymbols, #excludeAmbiguous, #excludeExtraSpecial');
      slider.addEventListener('input', () => {
        updateLengthValue(slider.value);
        generatePassword();
      });
      inputs.forEach(input => input.addEventListener('change', generatePassword));
      document.getElementById('generateButton').addEventListener('click', generatePassword);
      generatePassword();
    });

    function updateLengthValue(value) {
      document.getElementById('lengthValue').textContent = value;
    }

    function generatePassword() {
      const length = parseInt(document.getElementById('lengthSlider').value);
      const includeUppercase = document.getElementById('includeUppercase').checked;
      const includeLowercase = document.getElementById('includeLowercase').checked;
      const includeNumbers = document.getElementById('includeNumbers').checked;
      const includeSymbols = document.getElementById('includeSymbols').checked;
      const excludeAmbiguous = document.getElementById('excludeAmbiguous').checked;
      const excludeExtraSpecial = document.getElementById('excludeExtraSpecial').checked;

      let uppercaseChars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
      let lowercaseChars = 'abcdefghijklmnopqrstuvwxyz';
      let numberChars = '0123456789';
      let symbolChars = '!@#$%^&*+~?><-=';
      const ambiguousChars = '/\\|IiLl1oO0';
      const extraSpecialChars = '()_`}{[]:;.,';

      if (excludeAmbiguous) {
        uppercaseChars = removeCharacters(uppercaseChars, ambiguousChars);
        lowercaseChars = removeCharacters(lowercaseChars, ambiguousChars);
        numberChars = removeCharacters(numberChars, ambiguousChars);
      }
      if (excludeExtraSpecial) {
        symbolChars = removeCharacters(symbolChars, extraSpecialChars);
      }

      let charSet = '';
      let guaranteed = [];
      if (includeUppercase) { charSet += uppercaseChars; guaranteed.push(randomChar(uppercaseChars)); }
      if (includeLowercase) { charSet += lowercaseChars; guaranteed.push(randomChar(lowercaseChars)); }
      if (includeNumbers) { charSet += numberChars; guaranteed.push(randomChar(numberChars)); }
      if (includeSymbols) { charSet += symbolChars; guaranteed.push(randomChar(symbolChars)); }

      if (charSet === '') {
        document.getElementById('password').value = '';
        return alert('Please select at least one character type.');
      }

      const cryptoObj = window.crypto || window.msCrypto;
      const randomValues = new Uint32Array(length);
      cryptoObj.getRandomValues(randomValues);

      let password = guaranteed.join('');
      for (let i = guaranteed.length; i < length; i++) {
        password += charSet.charAt(randomValues[i] % charSet.length);
      }

      password = shuffleString(password);
      document.getElementById('password').value = password;
      evaluateStrength(password);
      updateHistory(password);
    }

    function updateHistory(password) {
      let history = JSON.parse(localStorage.getItem('passwordHistory') || '[]');
      history.unshift({ pw: password, ts: new Date().toLocaleString() });
      history = history.slice(0, 10);
      localStorage.setItem('passwordHistory', JSON.stringify(history));

      const list = document.getElementById('historyList');
      list.innerHTML = '<strong>Last 10 Passwords:</strong>' +
        history.map(h => `<li>${h.pw} <span class="timestamp">${h.ts}</span> <span class="copy-icon" onclick="copyText('${h.pw}')">📋</span><span class="copy-text" onclick="copyText('${h.pw}')">copy</span></li>`).join('');
    }

    function copyText(text) {
      navigator.clipboard.writeText(text).then(() => {
        const msg = document.getElementById('copyMessage');
        msg.style.display = 'block';
        setTimeout(() => msg.style.display = 'none', 2000);
      });
    }

    function clearHistory() {
      localStorage.removeItem('passwordHistory');
      document.getElementById('historyList').innerHTML = '';
    }

    function removeCharacters(charSet, charsToRemove) {
      return [...charSet].filter(c => !charsToRemove.includes(c)).join('');
    }

    function randomChar(charSet) {
      return charSet.charAt(Math.floor(Math.random() * charSet.length));
    }

    function shuffleString(str) {
      return [...str].sort(() => Math.random() - 0.5).join('');
    }

    function copyPassword() {
      const passField = document.getElementById('password');
      const copyMessage = document.getElementById('copyMessage');
      navigator.clipboard.writeText(passField.value)
        .then(() => {
          copyMessage.style.display = 'block';
          setTimeout(() => copyMessage.style.display = 'none', 2000);
        })
        .catch(() => {
          copyMessage.textContent = 'Failed to copy!';
          copyMessage.style.color = 'red';
          copyMessage.style.display = 'block';
          setTimeout(() => {
            copyMessage.textContent = 'Password copied!';
            copyMessage.style.color = 'green';
            copyMessage.style.display = 'none';
          }, 3000);
        });
    }

    function evaluateStrength(password) {
      const bar = document.getElementById('strengthBar');
      const text = document.getElementById('strengthText');
      let score = 0;
      if (password.length >= 12) score++;
      if (password.length >= 16) score++;
      if (/[A-Z]/.test(password)) score++;
      if (/[a-z]/.test(password)) score++;
      if (/[0-9]/.test(password)) score++;
      if (/[^A-Za-z0-9]/.test(password)) score++;
      if (!/(.)\1{2,}/.test(password)) score++;

      let color = 'red', width = '25%', label = 'Weak';
      if (score > 6) { color = 'green'; width = '100%'; label = 'Very Strong'; }
      else if (score > 4) { color = 'gold'; width = '75%'; label = 'Strong'; }
      else if (score > 2) { color = 'orange'; width = '50%'; label = 'Moderate'; }

      const entropy = estimateEntropy(password);
      bar.style.width = width;
      bar.style.background = color;
      text.textContent = `Strength: ${label} | Entropy: ${entropy} bits`;
      text.style.color = color;
    }

    function estimateEntropy(password) {
      let pool = 0;
      if (/[a-z]/.test(password)) pool += 26;
      if (/[A-Z]/.test(password)) pool += 26;
      if (/[0-9]/.test(password)) pool += 10;
      if (/[^A-Za-z0-9]/.test(password)) pool += 32;
      if (pool === 0) return '0.00';
      return (password.length * Math.log2(pool)).toFixed(2);
    }

    function toggleFeatureSection() {
      const section = document.getElementById('featureSection');
      const button = document.getElementById('toggleFeatures');
      const isHidden = window.getComputedStyle(section).display === 'none';
      section.style.display = isHidden ? 'block' : 'none';
      button.textContent = isHidden ? '▼ Hide Features' : '▶ Show Features';
    }
  </script>
  <a href=https://github.com/jasrasr/powershell/tree/main/Password-Generator-HTML>Development https://github.com/jasrasr/powershell/tree/main/Password-Generator-HTML</a>
</body>
</html>