Generating Fast MD5 Collisions With ATI Video Cards

Posted by timothy on Saturday August 1, 2009 @07:33AM from the how-to-get-grants-for-game-hardware dept.

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."

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The fast collisions are the worst by noidentity · 2009-08-01 07:46 · Score: 0, Offtopic

Slow collisions don't do much damage, but the fast ones can leave an awful scene. At least they're being honest and calling them collisions instead of "accidents". Er, wait, was the headline supposed to read "Generating MD5 Collisions Quickly with ATI Video Cards"?