Let's see, if I remember correctly, "64bits" isn't really 64bits, it's 40bits, and "128" is somewhere in the order of 104bits or so. And wasn't 256bit, proprietary [differs among manufacturers]?

Anyways, I think I read somewhere that with airsnort, it takes roughly an hour or so for the "64bit" one, assuming u have a 1GHz (x86) machine and about a gig of encrypted data packets.

I'm sure there's someone on the list who can give u a more accurate number.

And "128" will take a month or more (though in those cases, p2p or clusters are used to do it to reduce the time).

"256" of course makes a harder (duh).

However, all this is assuming there isn't a flaw in the algorithm (or a back door sort of thing) and requires bruteforce (as opposed to a dictionary or plaintext attack; which can be as fast as licky-split).

G.

Russ Button wrote:
[snipped]
How long does it take someone with a good laptop
to crack WEP encryption at:

64 bit
128 bit
256 bit

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