On Tue, 14 Apr 2009, Theo de Raadt wrote:

> > Has anybody been able to get Padlock accelerated SHA1 working on a C7
> > or is this not currently possible?
> 
> It isn't worth using it.  The overhead is too high.

Specifically: Via botched the implementation - their instruction set
does not allow the data to be hashed to be fed in multiple chunks, which
is how most applications work. 

There are ways around this but they are too ugly to mention.

-d

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