faster way of determing if the passphrase is correct or not

[folkert at vanheusden.com]

> > passphrase is incorrect). This seems to be a slow method: my 2.8GHz P4
> > can only do it 220 times a second. So I was wondering: is there a faster
> I guess we can douple or triple the performance but not much more.
> The whole point of the algorithm is to slow things down.

Ok/

> Things to do: Avoid the overhead of the cyptoframe work and thus write
> an optimized hash function. Avoid dynamic memory allocation and reuse
> buffers.  And all the other usual micro optmimizations.

Ah yes, and split the passphrase-callback function into two: one for asking
and one for freeing up buffers that might have been created in the first
one.

> It does not make much sense unless you want to write a passphrase cracker, though.

That's what it is for yes (http://www.vanheusden.com/nasty/) - altough
I also create friendly programs (http://www.vanheusden.com/gpgstats/ - generate
statistics for your keyring).


Folkert van Heusden

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