Wei Dai writes:
> Is CP completely broken, or is there some variant of it that
> is still unbroken?
It's completely broken. William White, Michael Purser and Sarah
Flannery found an attack on it after her January award. White
says the attack "appears pretty definitive." Perhaps it can be
rehabilitated, but as of now it should be considered dead.
That's not to denigrate Flannery's work: she started from the
assumption that the algorithm she'd been handed to work on was
O.K. and did some good work optimizing its implementation.
--
Jim Gillogly
21 Blotmath S.R. 1999, 22:25
12.19.6.12.9, 10 Muluc 17 Zac, Sixth Lord of Night
