Homework 3-sp10

Homework 3-sp10 - CSE 794Q Homework 3 Due: Wednesday, April...

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CSE 794Q Homework 3 Due: Wednesday, April 28, by class time 1. What RC4 key value will leave S unchanged during initialization? That is, after the initial permutation of S, the entries will be equal to the values from 0 through 255 in ascending order. (Hint: for what values of T[0. .255], it is always i = j in the loop of Initial Permutation so that S[i] ends up swapping with itself? Determine the value of T[0], then T[1], T[2], and so on 2. Consider a Feistel cipher composed 16 rounds. Suppose that, for a given key k , the key scheduling algorithm determines the first 8 round keys, 1 2 3 8 , , , k k k k and then set 9 8 10 7 11 6 16 1
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