A Novel Substitution Box Design for humming Bird-2 against Side channel Attack

The side-channel attacks are one of the effortless and commanding attacks against cryptographic implementation and their intention vary from protocols, modules, primitives and system. As a result of this attack, a serious threat to the security of cryptographic module was encountered. In effect, realization of the cryptographic algorithm has to take some countermeasure to resist against this type of attacks. This study presents an efficient S-Box design using Null Conventional Logic (NCL) for Humming Bird-2 which is an ultra lightweight cryptographic algorithm. The recommended architecture was developed using Verilog HDL and implemented on altera cyclone IV E. The results are promising in terms of Area and Degree of Confusion (DOC).