Re: Foibles of user "security" questions

2008-01-09 Thread mtd
Victor Duchovni wrote: > A > security savvy user will recognize this as a second password, that > multiple sites seem to want to share, and enter something unique and > unmemorable (stored on a "keychain" or just discarded if the primary > password is similarly safely stored). In fact, I see secu

Re: In all the talk of super computers there is not...

2007-09-07 Thread mtd
Leichter, Jerry wrote: > > | A couple of questions. How did you come up with the ~2.5 bits per > > | word? Would a longer word have more bits? > > He misapplied an incorrect estimate! :-) The usual estimate - going > > back to Shannon's original papers on information theory, actually - is > > th

Re: In all the talk of super computers there is not...

2007-09-05 Thread mtd
Allen wrote: > Now take the phrase "Mary had a lamb, and its fleece was as white as > snow." Not counting the quotes it is 52 characters and has both upper > and lower case characters, spaces and two specials or a total of 55 key > space. How big would the rainbow table be to contain that? How long