[Cryptech Tech] The sha512 core is now in the repo.

[Joachim Strömbergson]

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Aloha!

I've just added all source files, Python model, testbenches etc for the
sha512 core. This core implements the four SHA-512 versions defined in
NIST FIPS 180-4. There are test cases as specified by NIST for all
modes. The core has been implemented for Altera Cyclone 5GX without any
warnings on the RTL.

Th size of the core is about the same as for sha256 and sha1 combined. A
lot of that size is for all registers in the top level wrapper needed to
implement the ABI. Used in the TRNG (for example) those registers would
not be there. The core should offer almost double performance compared
to sha256. (Double block size, but 25% more rounds.)

I would appreciate any feedback on code, implementation, test builds in
other tools (ModelSim, Xilinx etc).

I will add the sha512 core to the coretest_hashes design to allow
testing of all threee hash functions. But first I need to kill that
parser bug in coretest.

I will also add the chacha stream cipher core so that we have the main
cryptographic building blocks for the TRNG.

Next cores to be completed is AES and the TRNG sub system.

- -- 
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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