anshumanmondal2006/EE_390_Design_Lab_IITG ? reverse-engineered prompt

Build me a small Python project for an IITG design lab experiment around lightweight encryption and key generation.

I want a simple set of scripts that can generate a private header, make keys, and encrypt data, with one Arduino sketch or example file to show how it could be used on a microcontroller too. There should be a clear way to run the Python files from the command line, and the code should be organized so it is easy to follow and reuse for lab work.

If anything is unclear from the existing files, please inspect them and keep the behavior consistent with what is already there. If you need current library or tool details, look them up online. Also make sure the README gets updated with a short explanation of what each script does and how to run the project from scratch.