[Cryptography] The world's most secure TRNG

[Bill Cox]

One more question, though I think I know the answer, based on "cheap" is
the #1 goal:

I'm using the cheapest FPGA available: a $2 Lattice ICE part with 384
LUT/Flops.  This is more than enough for interfacing to the USB fifo, but
not enough to whiten the signal with cryptographic secrity.  I know I need
to provide the raw signal without whitening - that can be done in
software.  However, is there any value in also incorporating a Keccak
sponge so that whitening can be done on the USB stick?  This would probably
require a $4 or $5 FPGA.

Bill
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