Slashdot Mirror


Generating Fast MD5 Collisions With ATI Video Cards

An anonymous reader writes "Yesterday at Black Hat USA 2009, a talk entitled MD5 Chosen-Prefix Collisions on GPUs (whitepaper) (Both PDFs) presented an implementation written in assembly language for ATI video cards that achieves 1.6 billion MD5 hash/sec, or 2.2 billion MD5 hash/sec with reversing, on an ATI Radeon HD 4850 X2. This is faster than the much-publicized 1.4-1.9 billion hash/sec figure that was supposedly reached on a PlayStation 3 by Nick Breese at Black Hat Europe 2008 (he later noticed an error in his benchmarking tool). Compared to the cluster of 215 PlayStation 3s that was used to create a rogue CA in December 2008, Marc Bevand claimed a cluster of 12 machines with 24 video cards would be a bit faster, consume 5 times less power, and be 10 times cheaper."

2 of 72 comments (clear)

  1. first by Anonymous Coward · · Score: -1, Troll

    first post!

  2. Basic English skills? by Runaway1956 · · Score: -1, Troll

    "consume 5 times less power, and be 10 times cheaper"

    This stupidity is worse than any double negative. Do people who write this kind of stuff ever graduate from the 6th grade? Well - wait - to be honest, I've know several old timers who never went to school at all, and they never used language like this. Should I conclude that this is the language of total morons, then?

    Phhhht.

    Someone give the guy a clue. If he insists on posting on slashdot, he should post in some language other than English. That nonsense MIGHT actually make sense if written in Sanskrit, or Yiddish.

    --
    "Windows is like the faint smell of piss in a subway: it's there, and there's nothing you can do about it." - Charlie Br