excessive SHA1 calls

[Love Hörnquist Åstrand]

tridge at samba.org writes:

> Love,
>
>  > About 24000 sha1 calls seems to be in the right dimension for one s2k, but
>  > that shouldn't account for all your time since that would be be around 0.4s
>  > for my slow hotplate, eh, powerbook.
>
> Is there any way to avoid this? Can we cache any of it?
>
> 0.4s per connection is a _lot_ to be paying. We've noticing it under
> valgrind as that becomes a lot more under a synthetic CPU.

Yes, its possible to cache the result of the s2k(password,enctype) on
success, and invalidate it on password change.

Love

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