bluemner / shape-game

Linux Shape Game To Teach Kids Encryption

Shape Game

Setup

• Use 3 linux computers connecting in a lan

• Clone the repo git clone <repo url>

• Install sh install.sh (this will work only with aptitude )

• Compile make

• Start server ./bin/server.out 4444

• Get server ip ifconfig

  • Take note of eth0 or enp2s0; note:: the numbers might be different

• Start a client

  • Alice ./bin/server.out 1 4444 <server ip>
  • Bob ./bin/server.out 2 4444 <server ip>
  • Eve ./bin/server.out 3 4444 <server ip>

How to run

Using the up, down, left, right arrow keys to change shape. space bar will send the message openly, which will demo the unsecured connection. enter \ return will demo the encrypted message.

Encryption

encryption is done by mapping shapes to fruit. As Eve only knows what shapes are Alice and Bob and use their fruit code to translate shapes to fruit and vise versa

Example

Server

Client

Starting Clients select shape before send Alice send message to Bob non-encrypted while bob used encryption. Take note that Eve can only read Alice's message.