0 Steganography Tutorial

Q.What Is Steganography?

A.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.
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The difference between Cryptography And Steganography

Cryptography:With cryptography its obvious theirs a message there, you just need to find the way to break the code.

Steganography:A hidden message/file in another file that to the unknowing eye wouldn't be able to tell.
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So the tool we will be using is called Steghide
http://steghide.sourceforge.net/download.php
So download that and extract it to where ever (For this tut im extracting to my desktop.)
so the folder should be called steghide
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No run CMD and direct your self to where the steghide folder is located
EX: cd desktop/steghide <---for me at least
No before we get into the actual steganography we need to move the picture that we want to hide the file in and the file (im using a text file for this example)
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Embedding
Now to hide the text file within the picture
Note:must be in the steghide dir

steghide embed -cf xbiohazardx.jpg -ef f47al.txt
-cf=Cover File
-ef=Embed File
And you will be prompted to add a password so that when you send this hidden file to your friend they can unpack it with that password.
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Extracting
So now you can either send this to another person or if your just hiding the file for future reference.
Once again you must be in the steghide dir

steghide extract -sf xbiohazardx.jpg
-sf=Stego File
You/your friend after typing that in will be promoted for a password-and that password is what you set when you embedded the file ^above^
And if the password was right it would extract the embedded file into steghide dir