[HARDWARE] Just Courious......]]

Robert Norton rjn at execpc.com
Sun Sep 19 01:28:09 EDT 1999


Dave Avery wrote:

> <snip>
> as far as I can tell you do require a programmable barrelshifter - the rotates are
> data dependant , unlike DES . The amount to rotate is determined by the incoming
> data/key

Thanks for the info, I didn't understand that the rotate was data dependent!  So it will
take more gates to fully unroll the algorithm, dang it.  Might it still fit into a $50
Xilinx part?  For me, the idea of 25Mkey/sec in a small, (cheap!,) box is very exciting.


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