🔐 ZastitaInformacijaProjekat

A Qt-based C++ desktop application for encrypting and decrypting files using symmetric algorithms and custom-built encryption logic. Developed as part of an academic project focused on information protection.

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📌 Features

• 🧱 Block-based file encryption and decryption
• 🔐 Multiple algorithms:
  • Custom symmetric encryption
  • Enigma-like cipher
  • XXTEA and CFB mode variants
• ⚡ Multi-threaded encryption support
• 📁 Simple and responsive Qt GUI
• 📤 Network send/receive logic
• 🐯 Optional Tiger Hash integration for hashing files

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🛠️ Technologies Used

• C++17
• Qt Qt 6 (Widgets + Network)
• CMake ≥ 3.16

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📁 Project Structure

.
├── CMakeCache.txt
├── cmake_install.cmake
├── CMakeLists.txt
├── .gitignore
├── main.cpp
├── Makefile
├── projekatZI_autogen
│   ├── deps
│   ├── EWIEGA46WW
│   │   ├── moc_widget.cpp
│   │   └── moc_widget.cpp.d
│   ├── include
│   │   └── ui_widget.h
│   ├── moc_predefs.h
│   ├── mocs_compilation.cpp
│   └── timestamp
├── .qt
│   ├── QtDeploySupport.cmake
│   └── QtDeployTargets.cmake
├── README.md
├── SecurityAlgo
│   ├── enigmafileencryptor.cpp
│   ├── enigmafileencryptor.h
│   ├── fileencryptor.cpp
│   ├── fileencryptor.h
│   ├── symetricfileencryptor.cpp
│   ├── symetricfileencryptor.h
│   ├── tigerhash.cpp
│   ├── tigerhash.h
│   ├── xxteacfb.cpp
│   ├── xxteacfb.h
│   ├── xxteaencryptor.cpp
│   └── xxteaencryptor.h
├── Threads
│   ├── threadencryptor.cpp
│   └── threadencryptor.h
├── widget.cpp
├── widget.h
└── widget.ui

7 directories, 33 files

🧰 Troubleshooting If you encounter errors such as:

Qt6 not found

QWidget: No such file or directory

Could NOT find Qt6 (missing: Qt6Widgets)

You likely need to install the required Qt and build tools.

🐧 On Arch/Manjaro: bash Copy Edit

sudo pacman -S qt6-base cmake g++

🐧 On Ubuntu/Debian: bash Copy Edit

sudo apt update
sudo apt install qt6-base-dev cmake g++

💡 Tip: If you have both Qt5 and Qt6 installed, CMake will usually find Qt6 by default. You can force a specific version using -DQt6_DIR=....

mkdir build && cd build
cmake ..
cmake --build .

Screenshoots

Choose on which port will server listen on

Choose location where your file watcher will watch for new files

Choose where decrypted files will be stored after decryption

Main window

Encryption

Decryption

File watcher