基于密钥差异的改进相关性分析方法研究
发布时间：2018-11-13 09:02
【摘要】：针对标准相关性能量分析(CPA)在旁路攻击中存在的运算时间长、搜索空间大等问题,在分析了功耗泄露信息与数据相关性的基础上,结合标准相关性分析方法,提出一种基于密钥差异位的改进相关性分析方法。该方法利用加密密钥同猜测密钥差异位与猜测密钥同实际能量消耗间的相关系数反比映射这一特征,在给定一个密钥假设的情况下,通过逐位改变0、1取值进行相关性计算获取正确密钥;在搭建实验平台上,针对AES首轮首字节加密实现对改进前后的相关性分析方法分别进行攻击实验。对比表明新方法在破解密钥的基础上成功将密钥搜索空间由原来28成功降至9。
[Abstract]:In order to solve the problems of long operation time and large search space of (CPA) in Bypass attack, this paper analyzes the correlation between power dissipation information and data, and combines the standard correlation analysis method. An improved correlation analysis method based on key difference is proposed. This method utilizes the feature that the encryption key is mapped inversely to the correlation coefficient between the key difference and the actual energy consumption, and given a key assumption, The correct key is obtained by changing the value of 0 ~ 1 bit by bit to calculate the correlation. Based on the experimental platform, the correlation analysis method before and after the improvement of the first round of AES first-byte encryption is tested separately. The comparison shows that the new method successfully reduces the key search space from 28 to 9.
【作者单位】： 军械工程学院信息工程系;中国卫星海上测控部实验技术部;
【基金】：国家自然科学基金资助项目(51377170) 河北省自然科学基金资助项目(F2012506008)
【分类号】：TN918.4
，
本文编号：2328636
[Abstract]:In order to solve the problems of long operation time and large search space of (CPA) in Bypass attack, this paper analyzes the correlation between power dissipation information and data, and combines the standard correlation analysis method. An improved correlation analysis method based on key difference is proposed. This method utilizes the feature that the encryption key is mapped inversely to the correlation coefficient between the key difference and the actual energy consumption, and given a key assumption, The correct key is obtained by changing the value of 0 ~ 1 bit by bit to calculate the correlation. Based on the experimental platform, the correlation analysis method before and after the improvement of the first round of AES first-byte encryption is tested separately. The comparison shows that the new method successfully reduces the key search space from 28 to 9.
【作者单位】： 军械工程学院信息工程系;中国卫星海上测控部实验技术部;
【基金】：国家自然科学基金资助项目(51377170) 河北省自然科学基金资助项目(F2012506008)
【分类号】：TN918.4
，
本文编号：2328636
本文链接：https://www.wllwen.com/kejilunwen/xinxigongchenglunwen/2328636.html
