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--- projects:stegano [2014/07/23 13:41] – cedric
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-====== Stéganô ======
-Stéganô is a Python [[http://en.wikipedia.org/wiki/Steganography|Steganography]] module.
-It uses the Python Imaging Library (PIL).
-Stéganô is under GPL v3 license.
-Python >= 3.2
-  * [[http://bitbucket.org/cedricbonhomme/stegano/ | Home page]];
-  * Getting Stéganô:
-    * hg clone http://bitbucket.org/cedricbonhomme/stegano //(main)//
-    * hg clone http://hg.cedricbonhomme.org/stegano/ //(backup)//
-    * hg clone http://code.google.com/p/stegano-cb/ //(backup)//
-  * [[http://stegano.readthedocs.org/ | documentation]];
-  * [[http://www.openhub.net/p/Stegano/ | Open Hub page]] of Stéganô;
-  * [[http://freecode.com/projects/stgan | Freecode page]] of Stéganô.
-<html>
-<script type="text/javascript" src="http://www.openhub.net/p/485698/widgets/project_factoids_stats.js"></script>
-</html>
-Steganography is the art and science of writing hidden messages in such a way that no one, apart from the sender and intended recipient, suspects the existence of the message, a form of security through obscurity. Consequently, functions provided by Stéganô only hide message, without encryption. Indeed steganography is often used with cryptography.
-The advantage of steganography, over cryptography alone, is that messages do not attract attention to themselves. If you are interested in cryptography have a look at my project [[http://bitbucket.org/cedricbonhomme/pysecret/|pySecret]].
-===== Requirements =====
-  * [[http://www.python.org/|Python]] (>= 3.2);
-  * [[https://pypi.python.org/pypi/Pillow|Python Imaging Library (fork)]] (Pillow).
-===== Methods of hiding =====
-For the moment, Stéganô implements these methods of hiding:
-  * using the red portion of a pixel to hide ASCII messages;
-  * using the [[http://en.wikipedia.org/wiki/Least_significant_bit|Least Significant Bit]] (LSB) technique;
-  * using the description field of the image (JPEG).
-Moreover some methods of [[http://en.wikipedia.org/wiki/Steganalysis|steganalysis]] are provided:
-  * steganalysis of LSB encoding in color images;
-  * statistical steganalysis.
-====== Tutorial ======
-==== Steganalysis ====
-<code bash>
-$ ./steganalysis-parity.py -i ./pictures./Lenna_enc.png -o ./pictures/Lenna_enc_st.png
-</code>
-===== Examples =====
-==== Reveal a text message ====
-{{:projects:lena.png|}}
-<code bash>
-$ wget http://wiki.cedricbonhomme.org/_media/projects:lena.png
-$ ./slsb.py --reveal -i ../projects\:lena.png
-</code>
-======  License ======
-Stéganô is under [[http://www.gnu.org/licenses/gpl-3.0.txt|GPL v3]] license.
-====== Donation ======
-{{:bc_nbg_64px.png | Bitcoin}}
-If you wish and if you like Stéganô, you can donate via bitcoin.
-My bitcoin address: 1GVmhR9fbBeEh7rP1qNq76jWArDdDQ3otZ
-{{tag>projects cs_lang:python steganography Stéganô}}