MD5 collisions?

Eric Rescorla ekr at
Mon Aug 16 17:35:11 EDT 2004

Check out this ePrint paper, which claims to have collisions in
MD5, MD4, HAVAL, and full RIPEMD.

The authors claim that the MD5 attack took an hour for the first
collision and 15 seconds to 5 minutes for subsequent attacks
with the same first 512 bits. 


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