steganography use it to hide a text file on a image

Now Iam going to teach you a very easy way to hide a text document inside an image file.
This process is called steganography. I already talked about it in this previous post LINK but I did not give any tutorial.
Iam making one now with step by step instructions and some visual help :)
The best part about this, is that you do not need any special software to do it! a simple comand line under Windows will do the trick.

Lets Start the Instructions:

For this tutorial I am going to hide a text file inside a jpg image.
1- Choose an image and a text document
1.2- Create a new folder on your hard drive, in my case I named my folder "a"
1.3- copy the text and the image file inside the folder, to make it easier in further steps you can rename the files with short names like 1 for the image and 2 for the text.

Ok step one is done, now you should have something on your computer similar to the image on the left.

 

 

 




2- Open a Command Prompt window. To do this go to the start menu and write cmd, then just click on the Command Prompt icon (I suggest you press CTRL+SHIFT and click the icon to run as an administrator)
If a new window with letters appeared then you are almost done! (Image on the right).

 

 

3- To proceed we need to locate and access the folder where we have our files. To navigate through the command prompt you need to use the cd command. Write cd\ and press the enter key.
3.1- Continue and write cd a (if a is the name of the folder you created on the first step)
3.2- You are inside the folder a. But just to make sure everything is in place write dir and press enter.
3.3- You are going to see the name of the image and the text document. If you renamed them as I said, you got 1.jpg and 2.txt
insert the following command: copy /b 1.jpg + 2.txt hiddentext.jpg
Press enter

 

Steganography

Another good form of encryption is steganography which is the act of hiding data within text, graphic files, or audio files.

The purpose of this method is so that nobody will know that there is a private message inside the medium (photo, document, etc.) because it is hidden.

Let’s say Bob wants to send private messages to Steve over a public forum read by numerous people. Bob grabs a picture, puts a hidden message inside and uploads it to the website. nobody knows the message is there except for Steve, which is able to save the picture to his computer and read the message hidden inside.

Forensic examiners will need to be looking at each individual file to determine if steganography was used. So for example if you have 1000 pictures, they will need to go through each and every one to determine which ones have steganography and which ones do not.

Using steganography is as easy as downloading the right software from the internet.

I started up by downloading one of the more popular freeware tools out now: F5, then moved to a tool called SecurEngine, which hides text files within larger text files, and lastly a tool that hides files in MP3s called MP3Stego. I also tested one commercial steganography product, Steganos Suite. These tools may contain backdoors as with all encryption programs therefor should not be used with data you are trying to hide from any party that may hold the decryption key.