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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."
Generated with the help of an ATI card, I assume.
CAs are incorruptible, we all know this.
// MD_Update(&m,buf,j);