stegpy

A program for encoding information in image and audio files through steganography.

On the left, a house with a steganographically hidden image. On the right, the extracted hidden image of a cat. It is revealed by removing all but the least significant bit of each color component in the host image.

Supported host formats:

• PNG
• BMP
• GIF
• WebP
• WAV

Images in a different format are automatically converted to PNG. Different audio formats are not supported at all.

Dependencies:

• numpy
• cryptography
• Pillow (PIL fork)

Install:

 pip3 install stegpy

How to use:

• Hide a message or file:

 stegpy "Hello World!" image.png

• Extract it:

 stegpy _image.png

• Encrypt:

 stegpy "Hello World!" image.png -p
Enter password (will not be echoed):
Verify password (will not be echoed):
 stegpy _image.png -p
Enter password (will not be echoed):
Hello World!

• More options:

 stegpy -h

To do:

• Add docstrings
• Allow encoding across multiple files
• Support JPEG & FLAC as hosts