how to backup to an encrypted usb drive?

[Lee <ler762@gmail.com>]

What are you using to backup your files to an encrypted usb drive?

This is my first try at moving off windows, so it'd be best to assume
I know almost nothing about linux admin stuff.

What I've been using on windows is truecrypt to encrypt the drive and
1) unison + gui frontend to do a quick backup of selected files & 2) a
bat file that calls xcopy to copy files with the archive flag set to
YYMMDD/ on an encrypted drive (ie. an incremental backup; I do a full
backup every few months)

Thanks
Lee