PadLock XSHA

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Hi Michal:

Can you remind me the reason why our PadLock SHA implementation
copies things into a page before hashing it?

According to the programming manual, it would seem that the state
should be recorded in EDI after each 64-byte block so we should
be able to use the init/update/final model, no?

Or has the chip changed since we implemented it?

Thanks,
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