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Getting started with TrueCrypt

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TrueCrypt is a free, open source application that allows you to create encrypted file stores and open them under Windows, Linux and Mac OS X. It's UI can appear daunting to the newcomer, but the app's actually very straightforward to use.

First, you need to download TrueCrypt for your preferred platform(s). We're using a Mac here, but there are versions for Linux and Windows, and they all interoperate. The latest version of the software can be downloaded from the TrueCrypt website.

TrueCrypt

The TrueCrypt UI

TrueCrypt makes encrypted volumes available as virtual drives. You can have up to 32 of these open at once. To make one, click the Create Volume button. This activates the program's Volume Creation Wizard:

TrueCrypt

Most folk will want the 'encrypted file container' option, which creates a file that you can use to contain your data in an encrypted form and which TrueCrypt can use to mount a virtual volume. On the next page, select the default Standard TrueCrypt Volume.

On the next page, click the Select File... button. Type in the name you want to give to the encrypted file and choose where you want TrueCrypt to save it:

TrueCrypt

The next screen lets you select how you want the file to be encrypted. The options are really only of interest to crypto wonks, but a rule of thumb perhaps is that the more ciphers the better. But AES is good enough for the US government's Top Secret documents, so we use that:

TrueCrypt

Next, choose how big you want your volume to be, in kilobytes (KB), megabytes (MB) or gigabytes (GB). Afterwards, you'll be asked for a password. The longer the better - though no more than 64 characters - and with a good mix of numbers and both upper- and lower-case letters. Equally, though, don't opt for something overly long that you'll have to write down in case you forget. TrueCrypt suggests you want at least 20 characters in there, but the size of your passwords should depend on whether you want to protect your data from casual peekers or hardcore hackers.

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