Dynamic inhomogeneous S-Boxes design for efficient AES masking mechanisms

作     者：CHEN Yi-cheng ZOU Xue-cheng LIU Zheng-lin CHEN Xiao-fei HAN Yu 

作者机构：Research Center for VLSI and Systems Huazhong University of Science andTechnology Wuhan 430074 China 

出 版 物：《The Journal of China Universities of Posts and Telecommunications》 (中国邮电高校学报（英文版）)

年 卷 期：2008年第15卷第2期

页      面：72-76页

核心收录：

学科分类：080903[工学-微电子学与固体电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 0839[工学-网络空间安全] 08[工学] 081201[工学-计算机系统结构] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：the Hi-Tech Research and Development Program of China (2006AA01Z226) the Natural Science Foundation of Hubei (2006ABA080) the Scientific Research Foundation of Huazhong University of Science and Technology (2006Z011B) the Program for New Century Excellent Talents in University (NCET-07-0328) 

主　　题：AES S-Boxes power analysis correlation poweranalysis (CPA) 

摘      要：It is an important challenge to implement a lowcost power analysis immune advanced encryption standard （AES） circuit. The previous study proves that substitution boxes （S-Boxes） in AES are prone to being attacked, and hard to mask for its non-linear characteristic. Besides, large amounts of circuit resources in chips and power consumption are spent in protecting S-Boxes against power analysis. Thus, a novel power analysis immune scheme is proposed, which divides the data-path of AES into two parts： inhomogeneous S-Boxes instead of fixed S-Boxes are selected randomly to disturb power and logic delay in the non-linear module; at the same time, the general masking strategy is applied in the linear part of AES. This improved AES circuit was synthesized with united microelectronics corporation （UMC） 0.25 μm 1.8 V complementary metal-oxide-semiconductor （CMOS） standard cell library, and correlation power analysis experiments were executed. The results demonstrate that this secure AES implementation has very low hardware cost and can enhance the AES security effectually against power analysis.