TrueCrypt is a very powerful program to encrypt information.
TrueCrypt runs on all of the major platforms:
Windows XP/Vista/7, Mac OS X and Linux.
How to install TrueCrypt:
First you should go at https://www.grc.com/misc/truecrypt/TrueCrypt and download the version you need.
Doubleclick the TrueCrypt setup icon.
Click on Run when you see the security warning:
Read and accept the terms of the license agreement:
Click Next to accept the default Install option:
Accept the defaults and click the Install button:
You'll get a message telling you that TrueCrypt was successfully installed and you'll be asked if you want to restart.
Click OK on the first message and NO on the second if you want to examine the installation log screen:
Go ahead and restart your computer.
You'll see a message saying that you can't close the installation wizard until you restart, click Yes.
After restart we can keep on working.
Doubleclick the TrueCrypt icon on your desktop and you'll see this picture:
If you don't want to read the Beginner's Tutorial, click NO.
Create encrypted data
When you see this screen, click on Create Volume:
Afterwards accept the default by clicking Next:
For now, we're just going to accept the default and create a Standard TrueCrypt Volume:
On the next step just type a name for your volume.
It can be any name you want.
Then click Next:
On the next screen, just accept the defaults? this settings are relevant just for Geeks like me who want to tweak things:
Next, select the size of your volume.
You can set it to anything you want up to the maximum space available on your drive:
Click next and you're going to be asked to set a password.
Don't worry about the Use keyfiles option for now.
You can go ahead and check the Display password box if you want.
It might make it easier for you to enter a long password twice.
Yes, you want a long password, though you don't have to make it 20 characters.
If you don't, however, you'll get this warning:
Next you'll be asked to select your file system.
We recommend NTFS as that is what Win7/Vista/XP uses as default.
You can safely ignore the note at the bottom of the screen.
The randomness of the numbers that you see flashing by are already so high as to make cracking the encryption of your volume virtually impossible.
You'll see some things happen and then you'll be presented with these two messages:
Go ahead and click Exit.
So you're ready to start using your new encrypted volume.
Mounting of encrypt file
Go back to the main window and click Select File:
Choose the name for the volume you just created:
Back at the main screen, select a drive you want to use and click Mount.
You'll be prompted for your password.
Enter it, and your TrueCrypt volume (in my case, Z:) will be mounted.
Now, you can safely Exit the program.
Don't worry, your drive will stay mounted until you restart.
You can save files to your TrueCrypt volume just like you would save them to any other drive.
Whatever you store there will be encrypted and decrypted on the fly as long as the drive is mounted.
When you shut down your PC, the volume will be dismounted, so the next time you start up, you'll have to run TrueCrypt and mount your volume again.
If you don't turn off your PC, be sure to manually dismount the volume? otherwise, anyone who gains access to your account will have access to your TrueCrypt volume.
If you dismount it and someone gains access to your account, they'll have to know your TrueCrypt password to see your encrypted files.
Send the encrypted disk file and the password.