I'm using Deja Dup on Oneiric Ocelot.
How can I make it use AES 256 as the algorithm for encryption?
Or for that matter, how can I control which encryption algorithm is used?
Deja Dup uses duplicity which in turn uses GnuPG. GnuPG uses CAST5 by default, but it also supports AES-256. However, I have no idea what parameters Deja Dup passes to duplicity and what parameters duplicity passes to GnuPG. So... how can I control which algorithm is used?