achntj/stegify — reverse-engineered prompt

Build me a simple Python command line tool that lets me hide a secret message or a small file inside an image, then pull it back out later with the right password.

It should work with PNG and BMP images. When embedding, I want to give it an input image, either a text message or a file, a password, and an output image name. The tool should encrypt the hidden content first using AES with a password based key, so someone who opens the image normally just sees a regular picture and can’t read the secret without the password.

It should also have an extract mode where I give it the image and password, and it prints the hidden message or saves the hidden file to disk. Please make the commands easy to run from the terminal, with clear argument names and helpful errors if something is missing or the password is wrong. Use common Python libraries and include a short README with install and usage examples.