Hmm. I Was pondering more on steg fs'. Probably having a bunch of 1k files in a directory containign random data. you parse each one , decrypt it and check the hash/crc at the bottom to see if it's your file. any files that cant be decrypted would probably be declared as freespace and overwritten. its a bit of a duct_tape hack. perhaps they wouldnt be shown. then again. it has to be a pretend ext2 system allegedly.