Disclaimer: It may be illegal or restricted to use, distribute and/or modify parts of mgSteganium in your jurisdiction. There is no guarantee of safety. It's experimental software. You use it at your own risk. I am not responsible for damages of any kind (see license).
mgSteganium is a free software solution for steganography. mgSteganium allows you to hide text in images, while this text is encrypted. Thus mgSteganium is a combination of encryption and steganography.
It should be impossible to prove whether a picture contains hidden information or not.
mgSteganium is free software. You can distribute it freely, alter, improve, and distribute these changes. mgSteganium is licensed under a BSD-like license.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
The map algorithm works like this:
int points[][x,y]
for (o=1; o<=min(width*height,KEYPOINTS_N); o++)p = key[o%keylen]
points[][x] = | (p|height<<p^o)%width |
points[][y] = | (p<<p^width|o)%height |
It's very easy, and it's too easy to be explicable.
© Max R. P. Grossmann, 2011.