Question: Exercise 1 . Shift Cipher [ 1 0 points ] Consider the shift cipher as we discussed it in class. Key space K = {

Exercise 1. Shift Cipher [10 points] Consider the shift cipher as we discussed it in class.
Key space K ={0,1,...,25}.
Suppose that we are given the following message space distribution, M: Pr[M =bye]=0.1
Pr[M =yes]=0.5
Pr[M =now]=0.4

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