This is a new attack, not the one Schneier was talking about. It's
very elegant work -- they actually implemented an attack that can
recover the long-term private key. The only caveat is that their
attack currently works on LANs, not WANs, because they need more
precise timing than is generally feasible over the Internet.
--Steve Bellovin, http://www.research.att.com/~smb (me)
http://www.wilyhacker.com (2nd edition of "Firewalls" book)