cryptmount allows management and user-mode mounting of encrypted filing systems on GNU/Linux systems. Filesystems & crypto-swap can be on either raw block devices or ordinary files, with device-mapper (dm-crypt) and loopback devices setup automatically.
I have been using cryptmount for a couple of years now, and it does what needs to be done, and is in general easy to use. Just type in cryptmount -a or cryptmount <nameofencrypteddevice> put in the password and it is done. It handles both encrypted partitions and encrypted file. (eg, if you want your mail directory encrypted, you can make a file of length 1G say, set it up for cryptmount, and then have it get mounted on /home/username/mail. No need for a separate partition) The one problem I have run into is if you were to say unmount /home/username/mail without using cryptmount -u. The system gets very confused then
Nice, thank you