Q1 [6 points, Key Distribution]

| November 30, 2018

Q1 [6 points, Key Distribution]

Suppose that users A and B use the key distribution protocol shown in the figure below (also refer to the lecture slides of week 7 and Chapter 14 in the textbook). This key distribution includes 5 steps numbered (1) to (5) in the figure. Answer the following questions.

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