Differential Power Analysis for Cryptographic Ics

摘要：

Based on the concrete circuit of embedded system which was realized by AT89C52 microchips and encrypted with DES,the paper introduces the design and implementation of Differential Power Analysis (DPA) attack which is one of the typical and powerful ways of Side Channel Attacks (SCA). This paper explains the relations among the power consumption characters and data-dependent power consumption of CMOS logic gates which function the integrated circuits (Ics). With 10 5 plaintexts and power consumption samples, 48-bit key of the round 16 of DES was detected successfully. Then the rest 8 in 56-bit effective key of DES was detected easily by exhaustive attack. The result indicates that DES encrypted systems without special protective measures are not strong enough to survive from the attacks of DPA, because of the leakage of the emission of physical signals and the difference of power consumption while processing the different data in Ics.

关键词： SCA DPA IC CMOS data-dependent power consumption DES

作者: Chu Jie Zhao Qiang Ding Guoliang Deng Gaoming

作者单位: Department of Computer Engineering,Mechanical Engineering College,Shijiazhuang 050003 China

会议类型: 国际会议

会议名称: 第八届国际电子测量与仪器学术会议(Proceedings of 2007 8th International Conference on Electronic Measurement & Instruments)

会议地点: 西安

会议语种:英文

在线出版日期: 2007-08-16（万方平台首次上网日期，不代表论文的发表时间）