Bus-Invert Coding as a Low-Power Countermeasure Against Correlation Power Analysis Attack

Abstract

Bus-invert coding technique is utilized to increase the security of cryptographic circuits (CC) against correlation power analysis attacks. The bus-invert coding technique is suitable to demolish the bijective relationship between the key and leakage information, making it difficult for a side-channel attacker to use correlation power analysis to obtain a secret key. The evaluations show that the number of measurements required to disclose the correct key (MTD) on the CC with bus-invert coding increases by more than 571X as compared to a naive CC, while the power consumption of the CC is reduced by 0.91 per cent.