HashTrace - Code Plagiarism Detector

HashTrace is a modern and efficient plagiarism detection system built using Qt (QML) for the frontend and C++ as the backend. It uses the Rabin-Karp rolling hash algorithm to identify code/text similarities between files and highlights them with an intuitive interface.

📽 Demo

▶️ Watch the demo video here:

Output.mp4

Features

• Drag-and-drop support for adding files
• Rabin-Karp algorithm for efficient hash-based comparison
• Side-by-side file comparison with highlighted duplicate content
• Similarity score between files
• Minimal, responsive UI using QML
• Handles preprocessing like removing comments and reserved keywords

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⚙ How It Works

1. Preprocessing: Cleans the source code (removes comments, blank lines, reserved words).
2. Hashing: Uses Rabin-Karp rolling hash to generate fingerprints.
3. Comparison: Compares hashes and highlights matched segments.
4. Visualization: Displays the results with matching blocks and similarity percentage.

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Tech Stack

• Frontend: Qt 6, QML
• Backend: C++17
• Build System: CMake
• Algorithm: Rabin-Karp Rolling Hash

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Installation

# Clone the repository
git clone https://github.com/your-username/HashTrace.git
cd HashTrace

# Build the project
mkdir build && cd build
cmake ..
make

Run the App

./HashTrace

📄 License

• This project is licensed under the MIT License.

Author

Praveen Kumar praveenrajagopal45@gmail.com