麒麟操作系统中的隐私保护功能如何确保你的数据安全？

// 请求相机权限
if (ContextCompat.checkSelfPermission(this, Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
   ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.CAMERA}, REQUEST_CAMERA_PERMISSION);
}

// 处理权限请求结果
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
   if (requestCode == REQUEST_CAMERA_PERMISSION) {
      if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
          // 相机权限已授权，进行相机操作
          openCamera();
      } else {
          // 相机权限被拒绝，无法进行相机操作
          showToast("相机权限被拒绝");
      }
   }
}

// 文件加密
public void encryptFile(File file, String password) {
   try {
      // 使用AES算法进行文件加密
      Cipher cipher = Cipher.getInstance("AES");
      cipher.init(Cipher.ENCRYPT_MODE, generateKey(password));
      InputStream inputStream = new FileInputStream(file);
      OutputStream outputStream = new FileOutputStream(file + ".encrypted");
      byte[] buffer = new byte[1024];
      int bytesRead;
      while ((bytesRead = inputStream.read(buffer)) != -1) {
          outputStream.write(cipher.update(buffer, 0, bytesRead));
      }
      outputStream.write(cipher.doFinal());
      inputStream.close();
      outputStream.close();
   } catch (Exception e) {
      e.printStackTrace();
   }
}

// 文件解密
public void decryptFile(File file, String password) {
   try {
      // 使用AES算法进行文件解密
      Cipher cipher = Cipher.getInstance("AES");
      cipher.init(Cipher.DECRYPT_MODE, generateKey(password));
      InputStream inputStream = new FileInputStream(file);
      OutputStream outputStream = new FileOutputStream(file.getParent() + "/" + file.getName().replace(".encrypted", ""));
      byte[] buffer = new byte[1024];
      int bytesRead;
      while ((bytesRead = inputStream.read(buffer)) != -1) {
          outputStream.write(cipher.update(buffer, 0, bytesRead));
      }
      outputStream.write(cipher.doFinal());
      inputStream.close();
      outputStream.close();
   } catch (Exception e) {
      e.printStackTrace();
   }
}

// 生成AES密钥
private SecretKeySpec generateKey(String password) throws Exception {
   byte[] passwordBytes = password.getBytes("UTF-8");
   MessageDigest digest = MessageDigest.getInstance("SHA-256");
   byte[] key = digest.digest(passwordBytes);
   return new SecretKeySpec(key, "AES");
}

// 手机号脱敏
public String desensitizePhoneNumber(String phoneNumber) {
   return phoneNumber.replaceAll("(\d{3})\d{4}(\d{4})", "$1****$2");
}