Security

Setting up false volumes in TrueCrypt

TrueCrypt is a free tool to create virtual encrypted disks housed within individual files, or a ‘volume within a volume’ – a hidden operating system and set of files that is invisibly housed in an encrypted file.

1. Inner and hidden volumes
A hidden volume is hidden inside another file with a separate password. This might smack of paranoia, and it’s crucial to manage it carefully, but if your customer is concerned about being forced to reveal their decryption key by customs
or immigration officials – which the US Department 
of Homeland Security can now require – they can hand over the outer volume and password without revealing the hidden one, which is protected using stenography.

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2. Choose a password

Multiple key files can be used in conjunction with a password to make the system more secure by stopping key loggers and brute force attacks. Any type of file including a MP3 can be a key file. During key generation, TrueCrypt asks you to move your mouse randomly in the window to create a random pool of data that it then uses to generate a cryptographic key for your data.

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3. The finished outer volume
The outer volume has been created in the form of a file, which can be mounted as a disk image. Decoy data is then copied onto this ‘disk’.

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4. Creating the hidden volume
Set the password and size for the hidden volume, which will be inside the file but which will not show when the disk is mounted. You’ll also need to create a TrueCrypt Rescue Disk on CD or DVD – and if the password changes, you’ll need to make a new recovery disc.

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Link to a Relevant Feature Click here to go to the main feature - Specifying and Supporting Disk Encryption


 
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