[Cryptech Tech] need SHA-224 support

[Joachim Strömbergson]

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Aloha!

Rob Austein wrote:
> So, unless I'm misunderstanding something, you add the mode bit 
> support to the Verilog core, somebody (probably me) adds the SHA-224 
> driver definition and the sha224 software core wrapper, done.
> 
> It's possible that this will break one or two old test programs
> which fiddled the core directly, but the fix there should be obvious
> if we still care about those programs, so I wouldn't worry about it.

Great! I've just pushed that change to the sha256 core. The biggie from
SW point of view is to write 0x05 instead of 0x01 to initiate SHA256
processing, and 0x06 instead of 0x02 to process next sha256 block. There
are defines for all these just as before.

If you or Paul can look at it and scream if there is anything crazy I'd
appreciate it.


The HW changes were very small. I would however someday clean up that
core a bit. For the next rainy day post Berlin or so.

- -- 
Med vänlig hälsning, Yours

Joachim Strömbergson - Alltid i harmonisk svängning.
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 Joachim Strömbergson          Secworks AB          joachim at secworks.se
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