Mastering Python for Networking and Security

Hiding data inside images with stepic

In the script that follows, we are using the Image package from the PIL module form read an image. Once we have read the image, we use the encode function from stepic to hide some text in the image. We save this information in a second image, and to obtain the hidden text, we use the decode function.

You can find the following code in the stepic_example.py file inside the steganography folder:

from PIL import Imageimport stepic#Open an image file in which you want to hide dataimage = Image.open("python.png")#Encode some text into the source image. #This returns another Image instance, which can save to a new fileimage2 = stepic.encode(image, 'This is the hidden text')image2.save('python_secrets.png','PNG') ...