Enhanced Side-Channel Leakage Detection Method by Considering Combinational Logic

• Published in: China communications Vol. 12; no. 6; pp. 1 - 10
• Main Authors: Liu, Junrong, Guo, Zheng, Gu, Dawu, Yu, Yu, Lu, Haining, Gu, Haihua, Bao, Sigang
• Format: Journal Article
• Language: English
• Published: China Institute of Communications 01.06.2015; School of Electronic Information and Electrical Engineering, Shanghai JiaoTong University, Shanghai 200240, China%School of Electronic Information and Electrical Engineering, Shanghai JiaoTong University, Shanghai 200240, China; Shanghai Viewsource Information Science & Technology Co., Ltd.200241, China%Shanghai Huahong Integrated Circuit Co., Ltd., 201203, China
• Subjects: Algorithm design and analysis; Analytical models; DES算法; Hybrid power systems; Integrated circuit modeling; power analysis; leakage detection;combinational logic; known-key analysis; Power demand; Registers; Semiconductor device modeling; 功率控制; 动力模式; 改进型; 泄漏检测; 混合模式; 组合逻辑; 通道; leakage detection; combinational logic; power analysis; known-key analysis
• ISSN: 1673-5447
• DOI: 10.1109/CC.2015.7122468

In this paper, we propose a hybrid power model that includes the power con- sumption of not only the registers but also part of the combinational logic. By doing known- key analysis with this hybrid model, power side-channel leakage caused by correct keys can be detected. In experiment, PRINTcipher and DES algorithms were chosen as analysis targets and combinational logic s-box unit was selected to build power template. The anal- ysis results showed the signal-to-noise ratio （SNR） power consumption increase of more than 20% after considering s-box＇s power con- sumption so that the information of keys can be obtained with just half number of power traces. In addition, the side channel-leakage detection capability of our method also shows better effectiveness that can identify the cor- rect keys.