Re: ArcotSign (was Re: Does security depend on hardware?)

[Bruce Schneier <schneier@counterpane.com>]

At 12:48 PM 9/22/98 +0100, Mok-Kong Shen wrote:
>Bruce Schneier wrote:
>> 
>> At 08:59 AM 9/22/98 +0100, Mok-Kong Shen wrote:
>
>> >A question : How does the legitimate user find his password?
>> >(Sorry for not having followed this thread from the beginning.)
>> 
>> He uses a remembered secret and some mathematical magic.
>
>Another naive question: Why is the remembered secret not sufficient
>(thus doing away with the magic)?

One of the significant improvements is that the scheme is immune to
offline password guessing attacks.

Bruce
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