基于滑动平均的能量分析攻击研究与实现

发布时间：2018-01-05 03:19

本文关键词：基于滑动平均的能量分析攻击研究与实现　出处：《电子与信息学报》2017年05期 　论文类型：期刊论文

【摘要】：在能量分析攻击中,为了提高攻击效率,减少噪声的影响,越来越多的预处理方法被使用,取得了很多显著的效果。该文以在ATmega16上运行的AES-128算法作为攻击目标,对采集的原始能量曲线进行滑动平均滤波,再通过相关能量分析(Correlation Power Analysis,CPA)攻击确定滑动平均滤波的最优参数。通过与原始数据和经过Hanning窗低通滤波器滤波后的数据对比,可以看出经过滑动平均滤波处理后,使用正确密钥所得的CPA相关系数较原始数据或低通滤波处理后所得系数大,而错误密钥所得相关系数小。经过滑动平均处理后,不仅可以发现AES-128的10轮加密过程,而且经过差分能量分析攻击所得的尖峰较原始的更为明显。实验结果表明经过滑动平均滤波预处理后,能量分析攻击的效率可明显提高。
[Abstract]:In energy analysis attacks, in order to improve the efficiency of the attack and reduce the impact of noise, more and more preprocessing methods are used. A lot of remarkable results have been achieved. In this paper, the AES-128 algorithm running on ATmega16 is taken as the target of attack, and the original energy curve is filtered by moving average. Correlation Power Analysis was analyzed by correlation energy. By comparing with the original data and the data filtered by the Hanning window low-pass filter, we can see that after the moving average filter processing. The CPA correlation coefficient obtained by using the correct key is larger than that obtained by the original data or the low-pass filter, but the correlation coefficient obtained by the error key is smaller, and the correlation coefficient obtained by the error key is smaller than that obtained by the original data or the low-pass filter. Not only the 10 rounds of AES-128 encryption process can be found, but also the peak obtained by differential energy analysis attack is more obvious than the original one. The experimental results show that after the moving average filter pretreatment. The efficiency of energy analysis attack can be improved obviously.
【作者单位】：北京电子科技学院电子与信息工程系;
【基金】：北京市自然科学基金(4163076) 北京电子科技学院基金(328201505,328201508)~~
【分类号】：TN918.1;TN713
【正文快照】： 密码算法的安全性主要包括两方面内容:一方面是数学上的安全性,另一方面是其物理实现的安全性。目前主要的密码算法在数学上几乎无法完全被攻破,但密码算法在物理设备上实现,有很多方式可以获取密钥信息。1996年,Kocher[1]提出时间攻击,第1次通过侧信道攻击恢复出密码设备的密

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