Abstract
Correlation power analysis (CPA) attacks on the hardware implementation of cryptographic algorithms can retrieve the cipher key by analyzing the correlation between hypothesized keys and the power measurement of that crypto hardware. The existing CPA attacks and the countermeasures are mainly for two-dimensional (2D) integrated circuits (ICs). There is a lack of study on CPA in the context of three dimensional(3D) ICs. To fill in this gap, this work investigates the impact of a 3D power distribution network (PDN) on the efficiency of CPA mounted on a cryptographic module, which is in one of the 3D planes. The Pearson correlation coefficient is used as a metric to assess the impact of different PDN types, circuit loads, and switching activities of the neighboring planes on the CPA efficiency.
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