基于虚拟孔与双轨预充电技术的电流型混淆逻辑电路设计  

Design of current-type obfuscated logic circuit based on dummy contacts and dual-rail precharge technology

作　　者：姚茂群[1] 李聪辉 薛紫微 李海威 YAO Maoqun;LI Conghui;XUE Ziwei;LI Haiwei(School of Information Science and Technology,Hangzhou Normal University,Hangzhou 311121,China;School of Information Engineering,Taizhou Vocational College of Science and Technology,Taizhou 318020,Zhejiang Province,China)

机构地区：[1]杭州师范大学信息科学与技术学院,浙江杭州311121 [2]台州科技职业学院信息工程学院,浙江台州318020

出　　处：《浙江大学学报（理学版）》2023年第3期316-321,共6页Journal of Zhejiang University（Science Edition）

基　　金：国家自然科学基金资助项目(61771179).

摘　　要：功耗攻击是密码芯片面临的一种极具威胁性的攻击方式,而逆向攻击将有助于提高功耗攻击的效率和成功率。为提升密码芯片中逻辑电路的安全性,通过将虚拟孔技术应用于电流型CMOS电路,设计了具有相同电路结构的与非门、或非门以及非门,使攻击者无法准确分辨电路的逻辑功能,起混淆逻辑作用。在此基础上,结合双轨预充电技术良好的功耗恒定性,使所设计的电路具有抵御功耗和逆向联合攻击的能力。最后用Hspice软件进行了实验验证。Power analysis attack against cryptographic chips is a threatening method,and reverse attack will help to improve the efficiency and success rate of power analysis attack.In order to improve the security of logic circuits in cryptographic chips,this paper applies dummy contacts technology to current-mode CMOS circuits.The designed NAND gate,NOR gate and INV gate have the same circuit structure,plays the role of confusing the attacker's logic,so that the attacker cannot accurately distinguish the logic function of the circuit.On the basis of this design,combined with the characteristics of good power consumption constancy of dual-rail precharge technology,the designed circuit has the ability to resist power analysis attack and reverse attack,and has been verified by Hspice.

关 键 词：功耗攻击 逆向攻击 双轨预充电 虚拟孔 

分 类 号：TP[自动化与计算机技术]