Early boot, activation, upgrades

[C. Scott Ananian]

On 7/10/07, C. Scott Ananian <cscott at cscott.net> wrote:
> The AES encryption on the Geode is spec'ed at 40MiB/sec.  Using a
> fixed key converts AES into a hash function which is over 50x faster
> than what we've got.

For reference, that would be p512 of
http://www.amd.com/files/connectivitysolutions/geode/geode_lx/33234E_LX_databook.pdf
and chapter 18 of Applied Cryptography, "ONE-WAY HASH FUNCTIONS USING
SYMMETRIC BLOCK ALGORITHMS".

As a stopgap, using only SHA-512 (and leaving off the whirlpool hash)
will more than double our authentication speed.
 --scott

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