The improved AES processing method provides an efficient alternative to both
Mips intensive multiplication and to conventional table lookup, used to multiply
terms over a Galois field (GF). The improved method takes advantage of the fact
that in the GF, any non zero element X can be represented by a power of a primitive
element P. The improved method thereby results in a 2 by 256 table. The log base
P of the terms being multiplied are looked up and summed, and the anti-log of the
sum is looked up in the same table.