Photo Magic

Programming Assignment based on Linear Feedback Shift Register using Python

butterfly.png

$ python3 main.py --encrypt --image-path=butterfly.png --password=10735 --tap-code=28 info: encrypted image saved as butterfly26.png

$ python3 main.py --decrypt --image-path=butterfly2.png --password=10735 --tap-code=28 info: encrypted image saved as butterfly26.png

Basic Setup

• Clone Repository (Using SSH)

  git clone git@github.com:er-knight/photo-magic.git

• Clone Repository (Using HTTPS)

  git clone https://github.com/er-knight/photo-magic.git

• Change Directory to photo-magic

  cd photo-magic

• Create Virtual Environment

  python3 -m venv venv

• Activate Virtual Environment (Bash on Linux)

  source venv/bin/activate

• Activate Virtual Environment (PowerShell on Windows)

  PS C:\> venv\Scripts\Activate.ps1

• Install Requirements

  python3 -m pip install -r requirements.txt

• Build lfsr Extension

  python3 setup.py build_ext --inplace
  

  Note:

  • On Linux, build-essential and python3-dev packages are required to build an Extension Module.
  • On Windows, Microsoft Visual C/C++ (MSVC) is required to build an Extension Module. It can be downloaded from here.

Encrypt Image

python3 main.py --encrypt --image-path=<image-path> --password=<password> --tap-code=<tap-code>

Decrypt Image

python3 main.py --decrypt --image-path=<image-path> --password=<password> --tap-code=<tap-code>

Reference

• Random Numbers with Linear Feedback Shift Register by Computerphile (YouTube)
• Assignment based on Linear Feedback Shift Register