基于旁路攻击的AES算法中间变量脆弱点  

AES intermediate variables vulnerability recognition based on side channel attacks

作　　者：方明[1] 徐开勇[1] 杨天池[1] 孟繁蔚[1] 禹聪[1] 

机构地区：[1]信息工程大学电子技术学院,郑州450000

出　　处：《计算机应用研究》2013年第5期1536-1539,共4页Application Research of Computers

摘　　要：介绍了针对AES算法的旁路攻击过程,指出了可行的SPA、DPA以及HDPA攻击方法,在此基础上,指出了AES算法面对旁路功耗攻击的脆弱点。其过程是:根据AES算法的实现流程,查找出可能产生的中间变量,通过对中间变量的分析,将潜在的可以被旁路功耗攻击利用的中间变量定义为脆弱点。进一步指出了旁路功耗攻击是利用了AES算法实现过程中数据与密钥的相关性、时钟频率的可测性以及不同指令执行时功耗的差异性来攻破AES算法的。This paper introduced the side channel attacks of the AES algorithm and pointed out the viable methods of SPA, DPA and HDPA attack. On this basis, it expatiated a vulnerability recognition process about the AES algorithm face to the side channel attacks. According to the realization of the AES algorithm, it found out the possible intermediate variables, by analy- sising of the intermediate variables. Further it pointed out that the side channel attacks were taking advantage of the vulnerabili- ty＇ s correlation with the key,the clock frequency＇ s testability and the differences of different instructions＇ execution to break the AES algorithm.

关 键 词：旁路攻击 脆弱点识别 AES算法 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]