How to encrypt files
This article lists the current possibilties for file encryption at the Department. If your are using confidential data at home or when travelling, you should encrypt your data to prevent abuse.
These solutions are all vetted by USIT's security people.
Light-weight Linux encryption: GnuPG
GnuPG is fast and easy.
Really fast HOWTO on how to protect one file:
gpg --symmetric <file.ext>
This will prompt you for a passphrase.
Now you only have the encrypted file.
You'll be prompted for the passphrase. Now you have an unencrypted copy of the encrypted file.
Encryption of large datasets: TrueCrypt (Windows/Linux)
TrueCrypt is supported for Windows and all Linux distributions. Its most compelling feature is the possibility to make a virtual, encrypted disk which can be decrypted and mounted at will, across all platforms. We're happy to help you set this up if you have a need, or you can check out http://www.truecrypt.org/.
Other encryption needs on Windows
USIT have several tips on their security pages.