Design of Secure Microsystems Using Current-to-Data Dependency Analysis

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DOI: 10.4236/cs.2013.42019    3,136 Downloads   5,151 Views   Citations

ABSTRACT

This paper presents a method for designing a class of countermeasures for DPA attacks based on attenuation of current variations. In this class of countermeasures, designers aim at decreasing the dynamic current variations to reduce the information that can be extracted from the current consumption of secure microsystems. The proposed method is based on a novel formula that calculates the number of current traces required for a successful DPA attack using the characteristics of the microsystem current signal and the external noise of the measurement setup. The different stages of the proposed method are illustrated through designing an example current flattening circuit. Meanwhile validity and applicability of the proposed formula is verified by comparing theoretical results with those obtained experimentally for the example circuit. The proposed formula not only estimates the required level of attenuation for a target level of robustness defined by design requirements, it also predicts the effectiveness of a countermeasure using simulation results therefore dramatically reducing the time to design of secure microsystems.

Cite this paper

H. Vahedi, R. Muresan and S. Gregori, "Design of Secure Microsystems Using Current-to-Data Dependency Analysis," Circuits and Systems, Vol. 4 No. 2, 2013, pp. 137-146. doi: 10.4236/cs.2013.42019.

Conflicts of Interest

The authors declare no conflicts of interest.

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