advapi: removed incomplete signature checking code

[Michael Jung]

Since I didn't get any feedback on this one, I'm forwarding it to 
wine-patches.

> Microsoft signs it's cryptographic service provider (csp) dlls with a
> private key. advapi32 will only load csp dlls with a valid signature. We
> will never be able to implement this, since this would mean having access to 
> Microsoft's private keys. Above this, Microsofts scheme doesn't give real 
> security, since there are instructions on the web to replace advapi32's 
> _NSAKEY with an arbitrary private key (this is if you have write access to 
> advapi32.dll), allowing you to load a csp signed by yourself. 
>
> I would like to remove the (stubbed) signature checking code from advapi32. 
> This would clean up advapi32 somewhat and remove a FIXME message, which 
> bothers me for some time and which confused wine users in at least two 
> occurences.

Changelog:
 Removed the incomplete signature checking code from advapi32.

-- 
Michael Jung
mjung at iss.tu-darmstadt.de
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