基于掩码技术的抗功耗攻击电路方案设计

Design of circuit against power analysis attacks based on masking technology

摘要:

掩码技术所具有的混淆特性可加大攻击者对电路逻辑值的分析难度，与双轨预充电技术相结合可进一步起到抗功耗攻击的作用。掩码技术和双轨预充电技术的采用需要对电路的输入和输出信号进行相应的处理。据此，本文提出了单-双轨转换逻辑电路，可实现单轨信号和双轨信号的相互转换。之后提出了掩码转换逻辑电路，可实现电路的输出值根据掩码值转换。最后进一步提出了单-双轨掩码逻辑结构，形成一个具有抗功耗攻击性能的电路设计方案。以上逻辑电路经过了Hspice仿真验证，具有正确的逻辑功能，为抗功耗攻击电路的设计提供了一种思路。

Abstract:

The confusion characteristic of masking technology can increase the difficulty of attackers to analyze the logic value of the circuit, and the combination of masking technology and Dual-Rail Precharge(DRP) technology can further play a role in resisting power analysis attacks. The application of masking technology and dual-rail precharge technology requires corresponding processing of the input signals and output signals. Based on this, this paper proposes a single rail to dual-rail conversion logic circuit, which can realize the conversion of signal. Then a mask logic conversion circuit is proposed, which can realize the conversion of the output value of the circuit according to the mask value. At last, a single-dual rail mask logic structure is proposed to form a circuit design scheme with power attack resistance. The above logic circuits have been verified by Hspice simulation and have correct logic functions, which provides a way for the circuit design against power analysis attacks.