Notes (pdf). This is a description of the algorithms and ideas necessary to implement least-significant bit steganography.
Stubs (zip). This is a zip file containing Java stubs for least-significant bit steganography.
Picture A. This is a ppm image with some hidden text.
Picture B. This is a ppm image with some hidden text.
Picture C. This is a ppm image with some hidden text.
Picture D. This is a ppm image with some hidden text.
Picture E. This one is trickier than the others. It uses a slightly different stego algorithm. See if you can figure it out!