only a thinking about AES last weekend..
perhabs this will be nice future in FC ?
loop AES
http://sourceforge.net/projects/loop-aes/
http://loop-aes.sourceforge.net/aespipe/
others: ( arduino ect )
https://github.com/qistoph/ArduinoAES256
http://www.literatecode.com/aes256
best wishes
rudi