http://tombuntu.com/index.php/2007/12/12/simple-file-encryption-with-openssl/
Handy howto on encrypting files with openssl and a passphrase. Dead easy, `openssl aes-256-cbc -salt -in file -out file` then `openssl aes-256-cbc -d in file out file`. Can also be used in pipes like `tar cp /blah | openssl aes-256-cbc -salt -out b.tar``
