this works and all but theres two problems:
1. the encrypted disk image will be a file on the jump drive, so you will have to open the drive, open the disk image and then provide a password to get to the files.
2. will not work on pcs as windows has no idea wat to do with dmgs. i guess you could make an encrypted iso but then you would have to install daemon tools or similar to mount the iso. this needs administrator access which people like me dont have at universities and some offices.
i would also like to encrypt my jump drive without using a dmg and make it work with windows. atm ive got all my uni work in an encrypted dmg, but my jump drive which is a lot more prone to be stollen is not.