In message <[EMAIL PROTECTED]>, "Perry E. Metzger" writes: > >I was unable to watch webcast of the rump session at the Crypto >conference last night, but I have heard that a proxy announced that >Wang has an order 2^63 attack on SHA-1. Can anyone confirm that, and >give details? > Shamir gave her rump session talk (and first gave a humorous presentation on why she couldn't get a visa -- she admitted to attacking U.S. government systems, and used collisions). She is indeed claiming a 2^63 attack, and found a new path to use in the attack. Because of the new path, there is reason to think the attack will get even better. Shamir noted that 2^63 is within reach of a distributed Internet effort to actually find one.
--Steven M. Bellovin, http://www.cs.columbia.edu/~smb --------------------------------------------------------------------- The Cryptography Mailing List Unsubscribe by sending "unsubscribe cryptography" to [EMAIL PROTECTED]