Stéganô is a Python Steganography module. It uses the Python Imaging Library (PIL).

Stéganô is under GPL v3 license.

Python >= 3.2

• Home page;
• Getting Stéganô:
  • hg clone http://bitbucket.org/cedricbonhomme/stegano (main)
  • hg clone http://hg.cedricbonhomme.org/stegano/ (backup)
  • hg clone http://code.google.com/p/stegano-cb/ (backup)
• documentation;
• Open Hub page of Stéganô;
• Freecode page of Stéganô.

Steganography is the art and science of writing hidden messages in such a way that no one, apart from the sender and intended recipient, suspects the existence of the message, a form of security through obscurity. Consequently, functions provided by Stéganô only hide message, without encryption. Indeed steganography is often used with cryptography. The advantage of steganography, over cryptography alone, is that messages do not attract attention to themselves. If you are interested in cryptography have a look at my project pySecret.

• Python (>= 3.2);
• Python Imaging Library (fork) (Pillow).

For the moment, Stéganô implements these methods of hiding:

• using the red portion of a pixel to hide ASCII messages;
• using the Least Significant Bit (LSB) technique;
• using the description field of the image (JPEG).

Moreover some methods of steganalysis are provided:

• steganalysis of LSB encoding in color images;
• statistical steganalysis.

$ ./steganalysis-parity.py -i ./pictures./Lenna_enc.png -o ./pictures/Lenna_enc_st.png

$ wget http://wiki.cedricbonhomme.org/_media/projects:lena.png
$ ./slsb.py --reveal -i ../projects\:lena.png

Stéganô is under GPL v3 license.

If you wish and if you like Stéganô, you can donate via bitcoin. My bitcoin address: 1GVmhR9fbBeEh7rP1qNq76jWArDdDQ3otZ