Here’s how to embed messages in pictures

The text can be encrypted and inserted into pic and audio files.

It might come in handy, shortly. It’s a free download.

http://steghide.sourceforge.net/index.php

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.

The current version is 0.5.1.

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

Steghide is licensed under the GNU General Public License (GPL) which permits modification and distribution of the program as long as these modifications are made available to the public under the GPL. For more information, see the full text of the GPL.

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