>>16
Top secret, huh? That's like, AES-256, the one that was recently broken to be less secure than AES-128, right? Nice blind faith you've got in the NSA there.
Spoilers:
AES was chosen not because it was the most secure, but because it was the fastest. Now why would you prioritize speed over security in this case is beyond me. It's cool for SSL, SSH, maybe your disks, but for something where speed doesn't matter, yes, do use a fucking cascade.