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已知仿射密码的加密函数可以表示为： f（a)=（aK1＋K0) mod 26 明文字母e、h对应的密文字母是f、w，请计算密钥K1和K0来破译此密码？
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题目内容
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更多“已知仿射密码的加密函数可以表示为： f（a)=（aK1＋K0…”相关的问题
A、单向函数密码技术
B、分组密码技术
C、公钥加密技术
D、对称加密技术
截取一段明文如下:
The Mutual Information Analysis (MIA) is a generic side channel distingui she that has been introduced at CHES 2008. This paper brings three contributions with respect to its applicability to practice. First, we emphasize that the MIA principle can be seen as a toolbox in which different (more or less effective) statistical methods can be plugged in. Doing this, we introduce interesting altematives to the original proposal. Second, we discuss the contexts in which the MIA can lead to successful key recoveries with lower data complexity than classical attacks such as, eg. using Pearson's correlation coefficient. We show that such contexts exist in practically meaningful situations and analyze them statistically. Finally, we study the connections and differences between the MIA and a framework for the analysis of side- channel key recovery published at Eurocrypt 2009. We show that the MIA can be used to compare two leaking devices only if the discrete models used by an adversary to mount an attack perfectly correspond to the physical leakages.
忽略文中的数字和符号，试用(1.9)仿射密码加密。然后对密文进行破密。
A.lambda函数将函数名作为函数结果返回
B.f=lambdax,y:x+y执行后，f的类型为数字类型
C.lambda用于定义简单的、能够在一行内表示的函数
D.可以使用lambda函数定义列表的排序原则
