xsukax-AES-256-File-Encryptor-Decryptor-Frontend/index.html at main · xsukax/xsukax-AES-256-File-Encryptor-Decryptor-Frontend · 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>xsukax AES-256 File Encryptor/Decryptor</title>
  <style>
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
      background: #f5f5f7;
      color: #1d1d1f;
      min-height: 100vh;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 20px;
      line-height: 1.47059;
      font-weight: 400;
      letter-spacing: -0.022em;
    }

    .container {
      background: #ffffff;
      padding: 48px;
      border-radius: 18px;
      width: 100%;
      max-width: 420px;
      box-shadow: 0 4px 6px rgba(0, 0, 0, 0.07);
    }

    .logo-container {
      text-align: center;
      margin-bottom: 32px;
    }

    .logo {
      width: 56px;
      height: 56px;
      margin: 0 auto 16px;
      background: linear-gradient(135deg, #007AFF, #5AC8FA);
      border-radius: 14px;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 2px 8px rgba(0, 122, 255, 0.15);
    }

    .logo svg {
      width: 28px;
      height: 28px;
      fill: white;
    }

    h1 {
      font-size: 24px;
      font-weight: 600;
      color: #1d1d1f;
      text-align: center;
      margin-bottom: 8px;
      letter-spacing: -0.02em;
    }

    .subtitle {
      font-size: 14px;
      color: #86868b;
      text-align: center;
      margin-bottom: 32px;
    }

    .input-group {
      margin-bottom: 20px;
    }

    .input-label {
      display: block;
      font-size: 13px;
      color: #86868b;
      margin-bottom: 8px;
      font-weight: 500;
    }

    .file-input-wrapper {
      position: relative;
      overflow: hidden;
    }

    input[type="file"] {
      position: absolute;
      left: -9999px;
    }

    .file-input-button {
      display: flex;
      align-items: center;
      justify-content: center;
      width: 100%;
      padding: 12px 16px;
      background: #ffffff;
      border: 1px solid #d2d2d7;
      border-radius: 10px;
      cursor: pointer;
      transition: all 0.2s ease;
      font-size: 15px;
      color: #1d1d1f;
    }

    .file-input-button:hover {
      border-color: #007AFF;
      box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
    }

    .file-input-button.has-file {
      background: #f5f5f7;
      border-color: #007AFF;
    }

    .file-icon {
      width: 20px;
      height: 20px;
      margin-right: 8px;
      fill: #007AFF;
    }

    input[type="password"] {
      width: 100%;
      padding: 12px 16px;
      background: #ffffff;
      border: 1px solid #d2d2d7;
      border-radius: 10px;
      color: #1d1d1f;
      font-size: 15px;
      transition: all 0.2s ease;
      outline: none;
    }

    input[type="password"]::placeholder {
      color: #86868b;
    }

    input[type="password"]:focus {
      border-color: #007AFF;
      box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
    }

    .button-group {
      display: flex;
      gap: 12px;
      margin-top: 28px;
    }

    button {
      flex: 1;
      padding: 12px 20px;
      border: none;
      border-radius: 10px;
      font-size: 15px;
      font-weight: 500;
      cursor: pointer;
      transition: all 0.2s ease;
      outline: none;
    }

    .btn-primary {
      background: #007AFF;
      color: white;
    }

    .btn-primary:hover {
      background: #0051D5;
    }

    .btn-primary:active {
      transform: scale(0.98);
    }

    .btn-secondary {
      background: #ffffff;
      color: #007AFF;
      border: 1px solid #007AFF;
    }

    .btn-secondary:hover {
      background: #007AFF;
      color: white;
    }

    .btn-secondary:active {
      transform: scale(0.98);
    }

    /* Progress */
    .progress-container {
      margin: 24px 0;
      padding: 16px;
      background: #f5f5f7;
      border-radius: 10px;
      display: none;
      animation: slideDown 0.3s ease;
    }

    .progress-container.active {
      display: block;
    }

    @keyframes slideDown {
      from {
        opacity: 0;
        transform: translateY(-10px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    .progress-info {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 10px;
    }

    .progress-label {
      font-size: 13px;
      color: #1d1d1f;
      font-weight: 500;
    }

    .progress-percentage {
      font-size: 13px;
      color: #007AFF;
      font-weight: 600;
    }

    .progress-track {
      width: 100%;
      height: 4px;
      background: #d2d2d7;
      border-radius: 4px;
      overflow: hidden;
    }

    .progress-bar {
      height: 100%;
      width: 0%;
      background: #007AFF;
      border-radius: 4px;
      transition: width 0.3s ease;
    }

    .status {
      margin-top: 20px;
      padding: 12px 16px;
      background: #f5f5f7;
      border-radius: 8px;
      font-size: 13px;
      color: #86868b;
      text-align: center;
      min-height: 44px;
      display: flex;
      align-items: center;
      justify-content: center;
      transition: all 0.3s ease;
    }

    .status.success {
      background: #e8f5e8;
      color: #32a852;
    }

    .status.error {
      background: #fff0f0;
      color: #d70015;
    }

    /* Modal */
    .modal {
      display: none;
      position: fixed;
      inset: 0;
      background: rgba(0, 0, 0, 0.4);
      align-items: center;
      justify-content: center;
      z-index: 9999;
      padding: 20px;
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
    }

    .modal.show {
      display: flex;
      animation: fadeIn 0.2s ease;
    }

    @keyframes fadeIn {
      from { opacity: 0; }
      to { opacity: 1; }
    }

    .modal-content {
      background: #ffffff;
      padding: 32px;
      border-radius: 14px;
      max-width: 340px;
      width: 100%;
      text-align: center;
      box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
      animation: slideUp 0.3s ease;
    }

    @keyframes slideUp {
      from {
        opacity: 0;
        transform: translateY(20px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    .modal-icon {
      width: 48px;
      height: 48px;
      margin: 0 auto 16px;
      background: #f5f5f7;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .modal-icon svg {
      width: 24px;
      height: 24px;
      fill: #86868b;
    }

    .modal-title {
      font-size: 17px;
      font-weight: 600;
      color: #1d1d1f;
      margin-bottom: 8px;
    }

    .modal-message {
      font-size: 14px;
      line-height: 1.4;
      color: #86868b;
      margin-bottom: 24px;
    }

    .modal-button {
      width: 100%;
      padding: 10px 20px;
      background: #007AFF;
      color: white;
      border: none;
      border-radius: 10px;
      font-size: 15px;
      font-weight: 500;
      cursor: pointer;
      transition: background 0.2s ease;
    }

    .modal-button:hover {
      background: #0051D5;
    }

    @media (max-width: 480px) {
      .container {
        padding: 32px 24px;
      }

      h1 {
        font-size: 20px;
      }

      .button-group {
        flex-direction: column;
      }
    }
  </style>
</head>
<body>
  <div class="container">

    <h1>xsukax AES-256 File Encryptor/Decryptor</h1>

    <div class="input-group">
      <label class="input-label">Select File</label>
      <div class="file-input-wrapper">
        <input type="file" id="fileInput" onchange="handleFileSelect(this)">
        <label for="fileInput" class="file-input-button" id="fileLabel">
          <svg class="file-icon" viewBox="0 0 24 24">
            <path d="M14,2H6A2,2 0 0,0 4,4V20A2,2 0 0,0 6,22H18A2,2 0 0,0 20,20V8L14,2M18,20H6V4H13V9H18V20Z"/>
          </svg>
          <span id="fileLabelText">Choose File</span>
        </label>
      </div>
    </div>

    <div class="input-group">
      <label class="input-label">Password</label>
      <input type="password" id="password" placeholder="Enter a secure password">
    </div>

    <div class="button-group">
      <button class="btn-primary" onclick="encryptFile()">Encrypt</button>
      <button class="btn-secondary" onclick="decryptFile()">Decrypt</button>
    </div>

    <div class="progress-container" id="progressContainer">
      <div class="progress-info">
        <span class="progress-label" id="progressText">Processing...</span>
        <span class="progress-percentage" id="progressPercentage">0%</span>
      </div>
      <div class="progress-track">
        <div class="progress-bar" id="progressBar"></div>
      </div>
    </div>

    <div class="status" id="status">Ready</div>
  </div>

  <!-- Modal -->
  <div id="modal" class="modal">
    <div class="modal-content">
      <div class="modal-icon">
        <svg viewBox="0 0 24 24">
          <path d="M12,2C6.48,2 2,6.48 2,12s4.48,10 10,10 10-4.48 10-10S17.52,2 12,2zm1,15h-2v-2h2v2zm0-4h-2V7h2v6z"/>
        </svg>
      </div>
      <div class="modal-title">Notice</div>
      <div class="modal-message" id="modal-message"></div>
      <button class="modal-button" onclick="closeModal()">OK</button>
    </div>
  </div>

<script>
function handleFileSelect(input) {
  const labelText = document.getElementById('fileLabelText');
  const fileButton = document.getElementById('fileLabel');

  if (input.files.length > 0) {
    const fileName = input.files[0].name;
    const maxLength = 30;
    const displayName = fileName.length > maxLength
      ? fileName.substring(0, maxLength - 3) + '...'
      : fileName;
    labelText.textContent = displayName;
    fileButton.classList.add('has-file');
  } else {
    labelText.textContent = 'Choose File';
    fileButton.classList.remove('has-file');
  }
}

function showModal(message) {
  const modal = document.getElementById("modal");
  document.getElementById("modal-message").innerText = message;
  modal.classList.add('show');
}

function closeModal() {
  const modal = document.getElementById("modal");
  modal.classList.remove('show');
}

function updateStatus(message, type = '') {
  const status = document.getElementById("status");
  status.innerText = message;
  status.className = 'status';

  if (type) {
    status.classList.add(type);
    setTimeout(() => {
      status.className = 'status';
      status.innerText = 'Ready';
    }, 3000);
  }
}

function showProgress(text = "Processing...") {
  const container = document.getElementById("progressContainer");
  const progressText = document.getElementById("progressText");
  container.classList.add("active");
  progressText.innerText = text;
  updateProgress(0);
}

function hideProgress() {
  const container = document.getElementById("progressContainer");
  setTimeout(() => {
    container.classList.remove("active");
    updateProgress(0);
  }, 300);
}

function updateProgress(percentage) {
  const bar = document.getElementById("progressBar");
  const percentageText = document.getElementById("progressPercentage");
  bar.style.width = percentage + "%";
  percentageText.innerText = percentage + "%";
}

async function simulateProgress(duration = 1000) {
  const steps = 20;
  const interval = duration / steps;

  for (let i = 0; i <= steps; i++) {
    const progress = Math.min(95, (i / steps) * 100);
    updateProgress(Math.round(progress));
    await new Promise(resolve => setTimeout(resolve, interval));
  }
}

async function getKeyFromPassword(password, salt) {
  const enc = new TextEncoder();
  const keyMaterial = await crypto.subtle.importKey(
    "raw", enc.encode(password), { name: "PBKDF2" }, false, ["deriveKey"]
  );
  return crypto.subtle.deriveKey(
    {
      name: "PBKDF2",
      salt: salt,
      iterations: 200000,
      hash: "SHA-256"
    },
    keyMaterial,
    { name: "AES-GCM", length: 256 },
    false,
    ["encrypt", "decrypt"]
  );
}

function downloadFile(data, filename) {
  const blob = new Blob([data instanceof Uint8Array ? data : new Uint8Array(data)], { type: 'application/octet-stream' });
  const url = URL.createObjectURL(blob);
  const a = document.createElement("a");
  a.href = url;
  a.download = filename;
  a.style.display = 'none';
  document.body.appendChild(a);
  a.click();
  a.remove();
  setTimeout(() => URL.revokeObjectURL(url), 100);
}

async function encryptFile() {
  const file = document.getElementById("fileInput").files[0];
  const password = document.getElementById("password").value;

  if (!file) {
    showModal("Please select a file to encrypt");
    return;
  }

  if (!password) {
    showModal("Please enter a password");
    return;
  }

  if (password.length < 8) {
    showModal("Password should be at least 8 characters long for better security");
    return;
  }

  showProgress("Encrypting file...");
  updateStatus("Encrypting...");

  try {
    const progressPromise = simulateProgress(800);

    const fileData = await file.arrayBuffer();
    const salt = crypto.getRandomValues(new Uint8Array(16));
    const iv = crypto.getRandomValues(new Uint8Array(12));
    const key = await getKeyFromPassword(password, salt);

    await progressPromise;

    const encrypted = await crypto.subtle.encrypt({ name: "AES-GCM", iv: iv }, key, fileData);

    const combined = new Uint8Array(salt.byteLength + iv.byteLength + encrypted.byteLength);
    combined.set(salt, 0);
    combined.set(iv, salt.byteLength);
    combined.set(new Uint8Array(encrypted), salt.byteLength + iv.byteLength);

    updateProgress(100);

    const outName = file.name.endsWith('.enc') ? file.name : file.name + ".enc";
    downloadFile(combined, outName);

    setTimeout(() => {
      hideProgress();
      updateStatus("File encrypted successfully", "success");
    }, 300);
  } catch (err) {
    console.error(err);
    hideProgress();
    showModal('Encryption failed. Please try again.');
    updateStatus("Encryption failed", "error");
  }
}

async function decryptFile() {
  const file = document.getElementById("fileInput").files[0];
  const password = document.getElementById("password").value;

  if (!file) {
    showModal("Please select a file to decrypt");
    return;
  }

  if (!password) {
    showModal("Please enter the password");
    return;
  }

  if (!file.name.endsWith(".enc")) {
    showModal("Please select an encrypted file (.enc)");
    return;
  }

  showProgress("Decrypting file...");
  updateStatus("Decrypting...");

  try {
    const progressPromise = simulateProgress(800);

    const fileData = new Uint8Array(await file.arrayBuffer());
    if (fileData.byteLength < 28) {
      hideProgress();
      showModal('Invalid encrypted file');
      updateStatus("Invalid file", "error");
      return;
    }

    const salt = fileData.slice(0, 16);
    const iv = fileData.slice(16, 28);
    const ciphertext = fileData.slice(28);

    await progressPromise;

    const key = await getKeyFromPassword(password, salt);
    const decrypted = await crypto.subtle.decrypt({ name: "AES-GCM", iv: iv }, key, ciphertext);

    updateProgress(100);

    const filename = file.name.slice(0, -4);
    downloadFile(decrypted, filename);

    setTimeout(() => {
      hideProgress();
      updateStatus("File decrypted successfully", "success");
    }, 300);
  } catch (e) {
    console.error(e);
    hideProgress();
    showModal("Decryption failed. Please check your password.");
    updateStatus("Decryption failed", "error");
  }
}

// Add keyboard support
document.getElementById('password').addEventListener('keypress', function(e) {
  if (e.key === 'Enter') {
    const file = document.getElementById("fileInput").files[0];
    if (file && file.name.endsWith('.enc')) {
      decryptFile();
    } else {
      encryptFile();
    }
  }
});
</script>
</body>
</html>