In the previous videos, we have seen how we can hide text behind text and how we can hide executable
file behind a text file.
But now we will see how we can hide our data.
That is a text file behind an image.
So if someone opened the image, he will only be able to see the image and not the data behind it until
and unless he will aware about it.
OK, so we are going to use two different tools for this.
One is open Sternhell and other one is Rick Stengel.
OK, so you can easily get these two tools over the Internet, but if you don't, then I will attach
both of them under the resources of this lecture.
You can download it from there.
Now, let's open the first tool.
So this is the text file.
OK, so this is the card details card number and PIN number.
OK.
Hey, don't copy this, OK?
Now we are going to hide this data behind this image, OK?
Now, let's install the application.
I agree in St. Clause.
Let's open this.
Let's run once again, I agree, is Don Carlos.
OK, but an open Stegall.
I don't know why it opens, you didn't open it the first time, but now it's looking, so I bet your
message file here, OK?
And the message file is your secret data, which you want to hide.
So open stogel, this one open now select the cover file.
So this is the image behind which we want to hide our secret data right now.
The third is the output Stegall file.
OK, so leave it to default and let's take the password.
The let's say one, two, three, and confirm password.
One, two, three.
Select how data Bogard says please provide the venue for output stogel file.
OK, so let's select the island file again.
Select all files.
It says you'd accept only not being files.
Nobody will be defined as well.
And let's click on high data notes processing and let's for OK, so computer right now.
If someone opened this image, he will only be able to see the image and not the data behind it.
OK, so but now if you receive this image, then how can you extract the data behind it?
OK, so let's open the tool.
Select the extra data file.
OK, and then select your output file behind which we have learned the data and now it says output folder
for message.
Fine.
OK, so select the folder.
Lets you select open Stegall.
OK, so open.
Now you have to mention the exit password which we have used for hiding the data.
Otherwise you will not able to extract the data.
Right.
So enter the password and click on extract data.
It says find new pics already exist.
All right.
Yes.
See, it says file already exist because I have selected the same folder for the extraction of data.
But you can try the another folder.
OK, so that it will extract this file and save it under the new location which you have selected.
OK, so this way you can hide data behind image and extract the already hidden data.
Right.
So in the next video we will see how we can use Stegall.
OK.