steghide
Steganography program that hides secrets in the least significant bits of a file.
Steghide is a steganography program that is able to hide data in various kinds of image- and audio-files. The color- respectivly sample-frequencies are not changed thus making the embedding resistant against first-order statistical tests.
Features:
- compression of embedded data
- encryption of embedded data
- embedding of a checksum to verify the integrity of the extraced data
- support for JPEG, BMP, WAV and AU files