content: Don't waste your time encrypting.  Just cat out random data to fill the drive!  Any random data that is evenly divisible by 512 bytes is apparently evidence of literally everything!  After all, you can't distinguish encrypted data from random data with any mathematical test, so why waste your time! Ok it's not really that bad yet, but it is getting there.  We'll have to wait for more rulings on this- I doubt very much any law makers will touch this kind of sticky crap.