encrypt-rsa/examples/browser-basic.html at master · miladezzat/encrypt-rsa · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>encrypt-rsa Browser Example</title>
  <style>
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    body {
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
      min-height: 100vh;
      display: flex;
      justify-content: center;
      align-items: center;
      padding: 20px;
    }

    .container {
      background: white;
      border-radius: 12px;
      box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
      padding: 40px;
      max-width: 600px;
      width: 100%;
    }

    h1 {
      color: #333;
      margin-bottom: 10px;
      font-size: 28px;
    }

    .subtitle {
      color: #666;
      margin-bottom: 30px;
      font-size: 14px;
    }

    .section {
      margin-bottom: 25px;
    }

    label {
      display: block;
      color: #333;
      font-weight: 600;
      margin-bottom: 8px;
      font-size: 14px;
    }

    input[type="text"],
    textarea {
      width: 100%;
      padding: 10px;
      border: 2px solid #e0e0e0;
      border-radius: 6px;
      font-family: monospace;
      font-size: 13px;
      resize: vertical;
      transition: border-color 0.3s;
    }

    input[type="text"]:focus,
    textarea:focus {
      outline: none;
      border-color: #667eea;
    }

    textarea {
      min-height: 60px;
      max-height: 150px;
    }

    .button-group {
      display: flex;
      gap: 10px;
      margin-top: 10px;
    }

    button {
      flex: 1;
      padding: 12px;
      background: #667eea;
      color: white;
      border: none;
      border-radius: 6px;
      font-weight: 600;
      cursor: pointer;
      transition: background 0.3s;
      font-size: 14px;
    }

    button:hover {
      background: #5568d3;
    }

    button:active {
      transform: scale(0.98);
    }

    button:disabled {
      background: #ccc;
      cursor: not-allowed;
    }

    .output {
      background: #f5f5f5;
      border: 2px solid #e0e0e0;
      border-radius: 6px;
      padding: 12px;
      word-break: break-all;
      min-height: 50px;
      font-family: monospace;
      font-size: 12px;
      color: #333;
    }

    .message {
      padding: 12px;
      border-radius: 6px;
      margin-bottom: 15px;
      font-size: 14px;
    }

    .success {
      background: #d4edda;
      color: #155724;
      border: 1px solid #c3e6cb;
    }

    .error {
      background: #f8d7da;
      color: #721c24;
      border: 1px solid #f5c6cb;
    }

    .info {
      background: #d1ecf1;
      color: #0c5460;
      border: 1px solid #bee5eb;
    }

    .loader {
      display: inline-block;
      width: 14px;
      height: 14px;
      border: 2px solid #f3f3f3;
      border-top: 2px solid #667eea;
      border-radius: 50%;
      animation: spin 1s linear infinite;
      margin-right: 8px;
    }

    @keyframes spin {
      0% { transform: rotate(0deg); }
      100% { transform: rotate(360deg); }
    }

    .hidden {
      display: none;
    }

    .key-info {
      font-size: 12px;
      color: #666;
      margin-top: 4px;
    }
  </style>
</head>
<body>
  <div class="container">
    <h1>🔐 RSA Encryption Demo</h1>
    <p class="subtitle">Encrypt and decrypt messages in your browser</p>

    <div id="message"></div>

    <div class="section">
      <label>Step 1: Generate Key Pair</label>
      <button onclick="generateKeys()">Generate 2048-bit RSA Keys</button>
      <div class="key-info">Key size: 2048 bits (can encrypt ~190 bytes)</div>
    </div>

    <div class="section">
      <label>Public Key:</label>
      <textarea id="publicKey" readonly></textarea>
    </div>

    <div class="section">
      <label>Private Key:</label>
      <textarea id="privateKey" readonly></textarea>
    </div>

    <div class="section">
      <label>Message to Encrypt:</label>
      <textarea id="message-input" placeholder="Enter a message (max ~190 bytes)"></textarea>
    </div>

    <div class="section">
      <div class="button-group">
        <button onclick="encrypt()" id="encryptBtn">🔒 Encrypt</button>
        <button onclick="clearEncrypted()" style="background: #999;">Clear</button>
      </div>
    </div>

    <div class="section">
      <label>Encrypted (Base64):</label>
      <textarea id="encrypted-output" readonly></textarea>
    </div>

    <div class="section">
      <div class="button-group">
        <button onclick="decrypt()" id="decryptBtn">🔓 Decrypt</button>
        <button onclick="clearDecrypted()" style="background: #999;">Clear</button>
      </div>
    </div>

    <div class="section">
      <label>Decrypted Message:</label>
      <textarea id="decrypted-output" readonly></textarea>
    </div>
  </div>

  <script src="../build/web/index.js"></script>
  <script>
    function showMessage(text, type = 'info') {
      const messageEl = document.getElementById('message');
      messageEl.className = `message ${type}`;
      messageEl.innerHTML = (type === 'error' ? '⚠️ ' : type === 'success' ? '✓ ' : 'ℹ️ ') + text;
      messageEl.classList.remove('hidden');
    }

    function hideMessage() {
      const messageEl = document.getElementById('message');
      messageEl.classList.add('hidden');
    }

    async function generateKeys() {
      try {
        showMessage('<span class="loader"></span>Generating keys...', 'info');
        const keys = await encryptRSA.createPrivateAndPublicKeys(2048);
        document.getElementById('publicKey').value = keys.publicKey;
        document.getElementById('privateKey').value = keys.privateKey;
        showMessage('✓ Keys generated successfully!', 'success');
      } catch (error) {
        showMessage(`Error: ${error.message}`, 'error');
      }
    }

    async function encrypt() {
      try {
        const publicKey = document.getElementById('publicKey').value;
        const message = document.getElementById('message-input').value;

        if (!publicKey) {
          showMessage('Please generate keys first', 'error');
          return;
        }

        if (!message) {
          showMessage('Please enter a message', 'error');
          return;
        }

        showMessage('<span class="loader"></span>Encrypting...', 'info');
        const encrypted = await encryptRSA.encryptStringWithRsaPublicKey({
          text: message,
          publicKey,
        });

        document.getElementById('encrypted-output').value = encrypted;
        showMessage('✓ Message encrypted successfully!', 'success');
      } catch (error) {
        showMessage(`Error: ${error.message}`, 'error');
      }
    }

    async function decrypt() {
      try {
        const privateKey = document.getElementById('privateKey').value;
        const encrypted = document.getElementById('encrypted-output').value;

        if (!privateKey) {
          showMessage('Please generate keys first', 'error');
          return;
        }

        if (!encrypted) {
          showMessage('Please encrypt a message first', 'error');
          return;
        }

        showMessage('<span class="loader"></span>Decrypting...', 'info');
        const decrypted = await encryptRSA.decryptStringWithRsaPrivateKey({
          text: encrypted,
          privateKey,
        });

        document.getElementById('decrypted-output').value = decrypted;
        showMessage('✓ Message decrypted successfully!', 'success');
      } catch (error) {
        showMessage(`Error: ${error.message}`, 'error');
      }
    }

    function clearEncrypted() {
      document.getElementById('encrypted-output').value = '';
      hideMessage();
    }

    function clearDecrypted() {
      document.getElementById('decrypted-output').value = '';
      hideMessage();
    }

    // Hide message after 5 seconds
    setInterval(() => {
      if (document.getElementById('message').classList.contains('hidden')) return;
      const message = document.getElementById('message').textContent;
      if (!message.includes('...')) hideMessage();
    }, 5000);
  </script>
</body>
</html>