Re: commerical rainbow crack?

[Valdis.Kletnieks () vt edu]

On Mon, 22 Mar 2004 17:14:36 EST, Luke Scharf said:
> On Mon, 2004-03-22 at 16:28, Richard Stevens wrote:
> > thanks to all for the input., looks like john it is, with a little more pat
ience :)
> >  
> > out of interest, anyone think  a distributed project using john would be us
eful?  something like the SETI screen saver thing... 
> It sounds nifty and I'd love to use it -- but on the off chance that you
> might use it to run my passwd file, I don't think I'll contribute any
> CPU time...

Think carefully - if they can use it to run your passwd file, then you're
already screwed.   How did they get your shadow passwords? :)

Remember - you can't mount a dictionary attack unless you have an oracle of
some sort to tell you if each guess is right or wrong - whether that be a known-correct
hash of the password, a service that provides non-rate-limited authentication attempts,
or other methods (such as being able to recognize plaintext because it's within
the unicity distance - http://www.schneier.com/crypto-gram-9812.html#plaintext)

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