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 - xor_bytes
 - color crypto
 
+!()[http://i.imgur.com/5IBxKbF.png]
+
 ___
 
 ## Command Line:
diff --git a/Steganography/README.md~ b/Steganography/README.md~
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+# Steganography
+
+
+## Images
+
+- Adding two images
+- xor_bytes
+- color crypto
+
+___
+
+## Command Line:
+
+- Pull out the audio with ffmpeg:
+
+```
+$ ffmpeg -i windows.mp4 windows.wav
+```
+
+
+- Make a gif from video using [ffmpeg](https://www.ffmpeg.org/download.html)
+
+```sh
+$ ffmpeg -i windows.mp4 windows.gif
+```
+
+- Online tool for images: 
+	* [utilitymill](http://utilitymill.com/utility/Steganography_Decode)
+	* [pngcheck](http://www.libpng.org/pub/png/apps/pngcheck.html)
+	* [Paranoid.jar](https://ccrma.stanford.edu/~eberdahl/Projects/Paranoia/)
+
+
+____
+
+### Metadata
+
+
+[Image metadata](http://regex.info/exif.cgi)
+
+- To find information inside a picture, we can use package [pnginfo] or [pngcheck].
+
+- If we need [base64 decoding] (for example a PGP key with a picture).
+
+- Weird pieces of bytes may need to be XORed.
+
+- If we have a decrypted message and a key:
+    1. Import the private key to use it to decrypt the message with ```gpg --allow-secret-key-import --import private.key```
+    2. Decrypt with ```gpg --decrypt message.pgp```.
+
+- [ExifTool](http://www.sno.phy.queensu.ca/~phil/exiftool/index.html)
+
+
+
+
+
+
+
+
+[Bacon's cipher]:http://en.wikipedia.org/wiki/Bacon's_ciphe
+[Carpenter's Formula]:http://security.cs.pub.ro/hexcellents/wiki/writeups/asis_rsang
+[pngcheck]: http://www.libpng.org/pub/png/apps/pngcheck.html
+[karmadecay]: http://karmadecay.com/
+[tineye]:  https://www.tineye.com/
+[images.google.com]: https://images.google.com/?gws_rd=ssl
+[base64 decoding]: http://www.motobit.com/util/base64-decoder-encoder.asp
+[subbrute.py]: https://github.com/SparkleHearts/subbrute
+[pnginfo]: http://www.stillhq.com/pngtools/
+[namechk]: http://namechk.com
+