File Encryptor

A modular C++17 File Encryption/Decryption Utility that recursively processes files within a directory. Designed to gain understanding in modern C++ programming, object-oriented design, task management and file handling.

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Features

• Encrypts and decrypts files recursively inside a directory
• Supports directory traversal using filesystem
• Environment variable based secret key
• Modular project architecture
• Queue-based task management
• Built using modern C++17
• Makefile-based build system
• Error handling for invalid directories and inaccessible files

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Project Structure

FileEncryptor/
│
├── src/
│   ├── encryptor/
│   ├── fileHandling/
│   ├── processManagement/
│   ├── readEnv/
│   └── main.cpp
│
├── test/
│   └── sample files
│
├── .env.example
├── Makefile
└── README.md

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Technologies Used

• C++17
• STL
• filesystem
• Smart Pointers
• File Streams
• GNU Make

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Build

Clone the repository:

git clone https://github.com/Vaibhavkshyp/file-encryptor-cpp.git
cd file-encryptor-cpp

Build:

make

Run:

make run

Clean build files:

make clean

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Configuration

Create a .env file in the project root.

Example:

SECRET_KEY=5

The secret key is loaded during runtime and used for encryption and decryption.

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How It Works

1. User provides a directory.
2. User selects Encrypt or Decrypt.
3. The application recursively scans the directory.
4. Each file is added to a processing queue.
5. The encryption engine reads the secret key from the environment.
6. Every file is processed individually.

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Learning Outcomes

This project helped me gain practical experience with:

• Modern C++17
• File handling
• Object-Oriented Programming
• Smart pointers
• Makefiles
• Exception handling
• Project organization
• Recursive directory traversal

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License

This project is intended for educational and portfolio purposes.