Efficient hardware implementation of ITUbee for lightweight application

Recently, a new lightweight block cryptography algorithm, ITUbee, has been proposed by Ferhat Karakoc in Lightsec 2013. An efficient hardware implementation of ITUbee is presented in this paper. Firstly, we reuse certain module, which takes a big share of hardware resource, to achieve better resource utilization. Secondly, we apply composite field to implement 8-bit S-box instead of the traditional looking up tables(LUTs) to save area requirements. In the end, we conclude that the hardware implementation of ITUbee requires about 6448 GE on 0.18 um technology. The area consumption of ITUbee is roughly 31.2% less than the round-based implementation. And it costs 365.6 GE to implement 8-bit S-box by using composite field, 32.7% less than by using LUTs.