The nonce in Figure 31.22 is to prevent a replay of the third message. Eve cannot replay
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The nonce in Figure 31.22 is to prevent a replay of the third message. Eve cannot replay the third message and pretend that it is a new request from Alice, because when Bob receives the response, the value of RB is not valid anymore. This means that we can eliminate the first and the second message if we add a timestamp to the diagram. Show a new version of Figure 31.22 using a timestamp.
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The following shows the new diagram The ti...View the full answer
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