Lightweight block ciphers, which can be implemented with low cost, are suitable for improving the safety of small devices. PRINCE is a typical lightweight block cipher and suitable for unrolled architecture implementation. In addition, PRINCE can be achieved low latency and embedded in a small area. However, it has been reported that PRINCE with unrolled architecture implementation is vulnerable to power analysis. Regarding countermeasure against power analysis, the threshold implementation and rotating S‐boxes masking are popular countermeasures, these require large implementation overhead though. Therefore, this study proposes a low‐overhead power analysis countermeasure method for PRINCE with unrolled architecture. Moreover, evaluation experiments using a field‐programmable gate array verify the effectiveness of the proposed method. In experiments, the proposed method improved tamper resistance and reduced implementation overhead in comparison with the conventional method.

中文翻译：

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展开式架构PRINCE针对功耗分析的多种对策及其评估

可以以低成本实现的轻量级分组密码适用于提高小型设备的安全性。PRINCE是典型的轻量级分组密码，适用于展开架构实施。此外，PRINCE可以实现低延迟，并嵌入在一个很小的区域中。但是，据报道，采用展开式架构实施的PRINCE易受功耗分析的影响。关于针对功耗分析的对策，阈值实现和旋转S-box遮罩是流行的对策，但是这些要求大量的实现开销。因此，本研究为展开式架构的PRINCE提出了一种低开销的功率分析对策方法。此外，使用现场可编程门阵列的评估实验证明了该方法的有效性。