Be brave, basically steganography is not hard!

OpenStego is a steganography application that provides two functionalities:

  • Data Hiding: It can hide any data within a cover file.
  • Watermarking: Sign files with an invisible signature. It can be used to detect unauthorized file copying.

What is Digital Watermarking?

Is the process of embedding a covert marker in a noise-tolerant signal such as image data. It is typically used to identify ownership of the copyright of such signal. 
The hidden information should but does not necessarily need to contain a relation to the carrier signal. 
Digital watermarks may be used to verify the authenticity or integrity of the carrier signal or to show the identity of its owners.

More info and downloads

From Project homepage and GitHub Project