Abstract:
Differential power analysis (DPA) steals the secret key by analyzing the power consumption of the cryptographic device in dealing with different data.By the SABL (Sense Amplifier Based Logic) with power dissipation independent characteristics to design the cryptographic devices,DPA attacks can be effectively prevented.By analyzing the SABL circuit and the traditional adder principle,this paper proposes a reconfigurable adder design scheme capable of resisting DPA attack.Firstly,the adder circuit with resisting DPA attack performance is obtained by combining the characteristics of SABL circuit.And then,the reconfigurable adder is constructed by using the control carry method,which can support four 8 bit operands or two 16 bit operands.The results via Spectre simulation show that the proposed scheme has correct logic function,whose power independent performance increases by 97% and performance of resistant DPA attack is significant,compared with the traditional adder.