Cryptography Requirements

Software and Objects

A lockable Box

2 padlocks with keys (colour coded locks and keys)

Caesar Cipher disk - with two alphabet disks

A and B pair of a Visual Cryptographic images: one on paper the other on transparencies.

Photoshop, Gimp or similar to produce 50 x 50 bitmap as source of the Visual Cryptographic image.

Windows, Unix or macOS terminal with Python installed and the Python Image Library

The python script (code listing in the worksheet) and here: https://github.com/LessonStudio/VisualCryptography/blob/master/visual_cryptography.py