abstract = "S-Box based on Composite field arithmetic (CFA)
technology is optimised by Genetic algorithm (GA) and
Cartesian genetic programming (CGP) model for reducing
the hardware complexity. After using the CFA technique
to map Multiplicative inverse (MI) over GF(28) into
composite field GF((24)2), the compact MI circuit over
GF(24) is selected from 100 evolved circuits, and same
design method is applied to the compact multiplication
circuit over GF(22). Compared with the direct
implementations, the areas of optimised circuits of MI
over GF(24) and multiplication over GF((22)2) are
reduced by 66percent and 57.69percent, respectively.
The area reductions for MI over GF(28) and the whole of
S-Box are up to 59.23percent and 56.14percent,
separately. In 180nm 1.8V COMS technology, compared to
previous works, the S-Box proposed in this paper has
the minimum area and minimum power, which are
11.27percent and 6.65percent smaller than that of the
smallest area S-Box, respectively.",
notes = "ollege of Electronic and Information Engineering,
Nanjing University of Aeronautics and Astronautics,
Nanjing, China.