On Mon, 14 Mar 2005, Ferdinand Prantl wrote:
Hi,
you may want to read yet another paper, where a different, faster method is introduced, than the chinese one (english):
http://cryptography.hyperlink.cz/md5/MD5_collisions.pdf
Careful. This is with MD5, a different (but still related) algorithm than SHA-1.
Note that the same attack was applied to both MD5 and SHA-1. It dropped the cost of finding a collision in SHA-1 from 2^80 to about 2^69- but it dropped the cost of finding a collision in MD5 from 2^64 to something south of 2^40. So it was signifigantly more effective on MD5 than SHA-1.
Brian
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