[codeflo]

That's not what a collision attack[1] is. You're probably thinking of a pre-image attack[2].

[1] http://en.wikipedia.org/wiki/Collision_attack

[2] http://en.wikipedia.org/wiki/Preimage_attack

[Someone1234]

I didn't use the expression "collision attack" ever in this thread. I quoted someone else who used that term however (and the context of the whole discussion is clearly related to preimage attacks, not collision attacks).