🔐 KryptoDrive

KryptoDrive is a mobile app that encrypts files before saving them to external drives, ensuring that only authorized users with the correct password can access them.

🚀 Features

• AES-256-GCM Encryption: Strong encryption ensures file security.
• Per-File Passphrase Protection: Each file is individually protected with a unique passphrase.
• Secure External Storage: Encrypt and store files on external drives (USB, SD cards, etc.).
• Cross-Platform Support: Built with .NET MAUI for Android and iOS.
• User-Friendly Interface: Simple and intuitive file encryption and decryption.

🛠️ How It Works

1. Select a file to encrypt.
2. Enter a passphrase to protect the file.
3. Save the encrypted file to an external drive.
4. To decrypt, enter the correct passphrase.

📌 Security Overview

• AES-256-GCM encryption ensures data confidentiality and integrity.
• PBKDF2 Key Derivation with 100,000 iterations for enhanced password security.
• Unique salt for each file to prevent precomputed attacks.

🏗️ Tech Stack

• .NET MAUI (Cross-platform mobile development)
• C# (Core application logic)
• Xamarin.Essentials (For file system access)
• System.Security.Cryptography (For AES encryption)

🔧 Installation

Prerequisites

• .NET 8 SDK
• MAUI workload installed
• Android/iOS emulator or physical device

Setup

1. Clone the repository:

   git clone https://github.com/yourusername/KryptoDrive.git
   cd KryptoDrive

2. Restore dependencies:

   dotnet restore

3. Build and run:

   dotnet build
   dotnet run

🎯 Roadmap

• Cloud backup for encrypted files
• Support for biometric authentication
• File sharing with encrypted links
• Desktop version (Windows/Linux/Mac)

🛡️ License

This project is licensed under the MIT License.

🤝 Contributing

Pull requests are welcome! Feel free to submit issues and suggestions.

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💡 KryptoDrive – Your Data, Secure Forever! 🔒