A portable, cross-PC USB encryption utility that automatically encrypts/decrypts files stored on your USB drive using a password prompt. Built with Python, PyInstaller, and packaged with a professional Windows installer using Inno Setup.

🛡️ Lock and unlock sensitive files seamlessly — just plug in your USB and go!

• 🔒 AES Encryption with password protection
• 🔁 Auto-lock on unplug, unlock on reinsert
• 💡 Graphical Password Dialog (no command-line)
• ☁️ Unlimited password attempts
• 💼 Portable — runs directly from the USB
• 🧳 Minimizes to tray with quit option
• 🎨 Custom icon support
• 📦 Windows installer included

• On first run, you’re prompted to set a password.
• All files inside secure_files/ will be encrypted.
• When plugged back in, it prompts for your password and decrypts everything upon success.

Clone this repo or download the latest release.

Or compile it yourself:

git clone https://github.com/your-username/usb-encryption-tool.git
cd usb-encryption-tool

• Python 3.x
• cryptography
• pystray
• Pillow

Install with:

pip install cryptography pystray pillow

pyinstaller --onefile --noconsole --icon=usb_lock.ico usb_lock.py

USB/
├── usb_lock_win.exe       ← compiled app
├── run_usb_lock.bat       ← auto launcher
├── secure_files/          ← encrypted file folder
├── usb_lock.ico           ← optional custom icon

Use Inno Setup and run usb_lock_installer.iss.

✅ It will generate a .exe installer that installs directly to your USB.

The app minimizes to the system tray on Windows. Right-click the icon to quit the app.

The installer looks for a USB drive containing a file named usb_target_marker to install files to that drive automatically.

MIT License. Feel free to fork, customize, and distribute.

Pull requests and improvements are welcome!

1. Fork the repo
2. Create your feature branch: git checkout -b cool-feature
3. Commit changes
4. Push to the branch
5. Open a PR!

• Auto-run setup via USB (cross-platform)
• Hidden file system or vault mode
• OTP/2FA login integration
• Mac/Linux compatibility (basic support already possible)

• Encryption: cryptography
• GUI and Tray: tkinter, pystray, Pillow
• Installer: Inno Setup

🔗 Stay safe, and encrypt smart. 💾🔐