- better cipher choosing (xts,essiv,plain)
 - rename?
 - add optimized ext3 fs profile for crypto (deactivated journal, activated dir_index and filetype)

Cleanup:
hook_pre_initialize_=""
    in: src <= /dev/{zero,urandom,random}
    in: dev <= e.g /dev/loop2
    task: overwrite first and last 2MB with RNDSRC
hook_initialize_=""
    in: dev <= e.g /dev/hda2, /dev/mapper/grml-crypt_hda2, ...

profiles:
secure
    pre_init =
    init     = all with RNDSRC (rnd)
optimized
    pre_init = first and last 2MB with RNDSRC (prnd)
    init     = luksFormat with random pw and overwrite with /dev/zero (crnd)
fast
    pre_init = first and last 2MB with RNDSRC (prnd)
    init     =
custom
    pre_init =
    init     =