I wrote a script to use as an alternative to 'cryptsetup.sh' a few months ago and I've finally gotten around to posting it. 'cryptsetup.sh' is useful, however I don't like all the overhead required for the application I'm using it for. The script I wrote, called 'fastdm', only has a few basic functions: looping; unlooping; checking for a loop; and determining underlying devices or images. I just posted it this morning, actually:
http://prdownloads.sourceforge.net/e...r.bz2?download

I originally wrote this for use with a series of encrypted volume management scripts, but I chose to release it separately in case someone else is looking for an alternative.
ta0kira

It would be nice if you had provided the link to the project page rather than a link to the download manager.

Sorry. The project page doesn't really say anything about it since the project is a series of small script projects. This is just one of them. Here is the main project page:
http://sourceforge.net/projects/extport-ta0kira/

The script package doesn't have very many files, so it isn't difficult to get through.
ta0kira