The technique (art/science) of hiding files or data inside photos,
songs, and videos is known as Steganography. One of the popular Steganography
tools is S-Tools which is available as a free download.
To try this you need a Windows platform system. Please follow
the instruction below.
- Download and save the zip file containing the steganography tools and image files.
- Unzip the file steg.zip into an empty directory. If you do not have the unzip program already, you can get one here .
- Put a shortcut to S-tools.exe on your desktop by dragging it from Windows Explorer.
- Drag the zebras.bmp file to your desktop. Do not make a shortcut. The file itself must be moved there.
- Start S-tools.exe by double clicking on the icon on the desktop. A window will appear.
- Drag the zebras.bmp file to the S-tools window.
- Right click on the zebras pictures and select Reveal from the menu.
- Fill in the 3-character pass phrase 'abc' (without the quotes) in two places. Leave IDEA as the encryption algorithm. Click on OK.
- Wait until the Revealed Archive dialog box appears. This may take a minute or two.
- Right click on any item and select Save As to save the file. Repeat for the other ones. These are the hidden files.
- The file original-zebras.bmp is the file before the steganography was done, in case you wish to compare the 'before' and 'after' images.