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Re: On shared keys



On 29 Nov 2001, Derek Atkins wrote:
> Henry Spencer <henry@spsystems.net> writes:
> > In what way is it worse than old-style shared secrets?  *That* is the
> > crucial question.
> 
> It may be easier to break the RSA key if it's generated with a
> 'weakly-seeded' PRNG than if the 'weak seed' is used directly.

I'm not a cryptographist -- can you explain to me why?
I would expect the RSA keypair to be weaker if the
pre-shared key had more entropy than the resulting
RSA key.  But is this the case with the average PSK?

-Sami




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