PassSafe - Secure Offline Password Manager

PassSafe is a modern, privacy-first, and completely offline password manager built with .NET MAUI. It is designed with one core principle: Your data never leaves your device.

No cloud sync, no tracking, no telemetry. Just you, your master key, and your passwords secured by military-grade encryption.

✨ Key Features

• 🔒 Zero-Knowledge Architecture: Operates 100% offline. No servers, no accounts.
• 🛡️ Military-Grade Encryption: Uses AES-GCM (256-bit) for individual passwords and SQLCipher for full database encryption at rest.
• 👆 Biometric Authentication: Unlocks your vault seamlessly using Fingerprint or FaceID.
• 🎨 Dynamic Theming & Localization: Supports Light/Dark modes, custom accent colors, and real-time language switching (English, Turkish, Russian).
• 📊 Password Analyzer: Automatically audits your vault to find weak, short, or reused passwords.
• 🔄 Secure Backup & Restore: Export your encrypted .sqlite vault locally and import it to any device.
• ✂️ Auto-Lock: Automatically locks the app in the background.

📱 Screenshots

🛠️ Tech Stack & Architecture

• Framework: .NET MAUI (C# & XAML)
• Architecture: MVVM (Model-View-ViewModel) using CommunityToolkit.Mvvm
• Database: SQLite-net with SQLCipher for full DB encryption
• Cryptography: Native System.Security.Cryptography.AesGcm
• UI Components: Mopups, MauiIcons, CommunityToolkit.Maui

📥 Installation

Android

1. Go to the Releases tab.
2. Download the latest PassSafe-vX.X.X.apk file.
3. Install the APK on your Android device (You may need to enable "Install from unknown sources").

Windows (Comming soon...)

💻 How to Build from Source

To clone and run this application locally, you'll need the following prerequisites installed on your computer:

Prerequisites

• Visual Studio 2026 (latest version recommended)
• .NET Multi-platform App UI development workload enabled in Visual Studio Installer
• .NET SDK 10 (recommended)

Steps to Compile

1. Clone the repository:

   git clone https://github.com/Tentex1/PassSafe.git
   cd PassSafe
   

2. Open the project:

   Open the PassSafe.sln file using Visual Studio 2026.

3. Restore NuGet Packages:

   Right-click on the Solution in the Solution Explorer and select "Restore NuGet Packages".

4. Select the Target Framework:

   For Android: Select an Android Emulator or a connected physical Android device from the debug dropdown menu.

   For Windows: Select Windows Machine.

5. Build and Run:

   Press F5 or click the Play button to compile and run the application.

Note: If you are building for Windows, make sure Developer Mode is enabled in your Windows Settings.

🤝 Contributing

Contributions, issues, and feature requests are highly welcome! Feel free to check the issues page.

📜 License

This project is open-source and available under the GNU General Public License v3.0.