Check out this ePrint paper, which claims to have collisions in MD5, MD4, HAVAL, and full RIPEMD.
http://eprint.iacr.org/2004/199.pdf 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. -Ekr --------------------------------------------------------------------- The Cryptography Mailing List Unsubscribe by sending "unsubscribe cryptography" to [EMAIL PROTECTED]