Re: [9fans] Wireless lan cards for the bitsy.

[presotto@plan9.bell-labs.com]

it works well against casual sniffing.  Unfortunately, if you
can inject packets into the network by some other means, e.g.
pinging in via a wired net, then the only thing you need to
totally circumvent WEP is a few gig of storage (actually
8 gig will let you do it all).  Without the ability to
probe, it's possible but a lot harder.  It is true that
once you've guessed  the pattern that a single packet is
xor'd with, you can inject packets forever.

The committee is working on a new standard that might be
achievable on the current cards (the wavelan ones at least
are reprgrammable) and one that actually has been reviewed
by someone that understands security.  Unfortunately, they
seem to be stuck in wanting to use a single code as both
a secure MAC and as a ECC.  Since the 2 uses require very
different properties of the code, I expect they'll be fighting
over it for a while.