Social Engineering

How to hide a folder through Truecrypt

True Crypt is an open source tool used for encryption.

There are many encryption options in TrueCrypt, and one of them is create a virtual encrypted disk within a file. To others, this is just a single file and they can’t open it without the password. To you, this virtual encrypted disk is the place where you store all your confidential files and folders.

How to hide a folder through Truecrypt

how to create an encrypted folder

Click the Create Volume button to build that container we were talking about.

There are a number of different types of containers, but for our first attempt we can just use the default file container.

encrypt folders

Click Next.

Along with the various container types, there are advanced options for creating one container inside another. Think of a bookshelf inside a library. But for now, again take the default.

encrypt folders

Click Next again.

Because we are using the standard file container, we need to tell it the name of the file to use. Just in case you’re thinking in terms of folders, this can be a little confusing. We are going to create a file, and then eventually it will look like another hard drive on your system, but only when it’s mounted.

volume location

So, browse to a folder, and supply a file name. No need for a suffix. When you’re ready, hit the Next button again.

Remember I said there were lots of options? You can choose from a number of encryption types and hash algorithms. Ordinary people like me take the advice of the developers, and go with the defaults.

free encrypt or hide folders or files

Yeah. Click Next.

You can create a container of any size up to the available space on your real hard drive. It’s worth considering some limits if you ever want to backup the result to portable media, so perhaps you might want to stick with 4GB or so if you want the file to be backed up to DVD. You get the idea.

In our case, we’re just creating a small container for some tax files. Setting aside 100MB seems about right, but I have created 60GB containers in the past without any trouble.

free encrypt or hide folders or files

Click Next, yet again.

Passwords are very important in Truecrypt. Tina talked earlier in the year about how to select a good one. I can’t expand on that. Make a good choice.

free encrypt or hide folders or files

Next. Again.

This screen is a little unusual. You need to move the mouse around in a random fashion for a while. Go on, you know you want to. A little more. Great.

volume format

Just for a change of pace, click Format. Then take a break.

volume format 2

All being well, you’ll get a confirmation when the format is finished.

Successfully created

Go ahead and click OK. It’s not as though you have other options.

And that’s it. Done.

Volume created

One new Truecrypt volume is quite enough for now, so click Exit, and we can move on to making use of it.

Using The New Volume

Run Truecrypt again.

Select an available drive letter from the list, and then browse to the file you just created. Just to be clear, in this case I’m going to mount the new MUO container as the O: drive.

mount volume

Click Mount to complete the job. You will be prompted for that password you carefully made up earlier. Don’t forget it. There are no back doors here.

enter passwordClick OK.

And that’s it. I now have a 100MB O: drive, ready for use.

freeware to encrypt folders

Click Exit, and take a look in Windows Explorer.