Change one message in protocol of Fig. 8-34 in a minor way to make it resistant to the reflection attack. Explain why your change works.
Answer to relevant QuestionsThe Diffie-Hellman key exchange is being used to establish a secret key between Alice and Bob. Alice sends Bob (719, 3 191). Bob responds with (543). Alice's secret number, x, is 16. What is the secret key?In the public-key authentication protocol of Fig. 8-43, in message 7, RB is encrypted with KS. Is this encryption necessary, or would it have been adequate to send it back in plaintext? Explain your answer.The image of Fig. 8-55(b) contains the ASCII text of five plays by Shakespeare. Would it be possible to hide music among the zebras instead of text? If so, how would it work and how much could you hide in this picture? If ...What is the net force acting on a car cruising at a constant velocity of 70 km/h (a) On a level road and (b) On an uphill road?A large fraction of the thermal energy generated in the engine of a car is rejected to the air by the radiator through the circulating water. Should the radiator be analyzed as a closed system or as an open system? Explain.
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