>I tried to follow the very top code in the first program. BTW, which one is the best method to use (the best encryption)?

(1) I guess aes 256 block

(2) Algorithm explained - takes some time to digest - I haven't fully - http://csrc.nist.gov/archive/aes/rijndael/Rijndael-ammended.pdf

(3) if you want to write your own aes 128 block - here's a place to start - optimized - including test vectors - different block paddings to implement

http://teal.gmu.edu/courses/ECE636/homework/rijndael-fst-3_0.zip


(4) I have not found the same optimized as (3) for 256 block mode = although I would like