[ HackYou CTF 2012 : Crypto - Schneier's Algorithm ]

For this particular challenge, all i've got is an image from here.
http://misteryou.ru/cry100/cry100.jpg

From first glance, i think the arrow is trying to tell me to read backwards.
So reading backwards from top to bottom, i saw these words.
hackyouisthebestestctfftw
And that is our flag. :D

Cheers,
Jacob Soo