Basically, one way in which you can use truecrypt is to create a file which, when mounted, acts like a device/filesystem. This container is encrypted and the strength of encryption depends on your key or password.
As a solution it also suffers from slow initial syncing.
Setting it up is a piece of cake:
1. Install truecrypt.
Get the correct version e.g. "Standard x64" from http://www.truecrypt.org/downloads.
Install by extracting the file and executing it:
chmod +x truecrypt-7.1a-setup-x64
sudo ./truecrypt-7.1a-setup-x64
2. Start truecrypt and click on Create Volume
Select encrypted file container. The other option is more useful if you have access to the hardware. |
Using a Hidden truecrypt volume means you pay a space penalty, depending on how you distribute the space between the two volumes. |
Select location and filename |
Pick an algorithm. I don't know much about this, but using a cascade sounds reasonable. I guess there are performance penalties though. |
Be aware that the container file will take up all this space -- whether it's empty or not. |
3. Use the container file.
Click on Select File, then mount. You typically need to supply both the container password and your admin password. |
This is what the inside of the container file looks like. |
And this is what the dropbox folder looks like |
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