Question: Consider the following protocol: AKDC: KDC A: A B: B A: IDA || IDB|| N E(Ka, [Ks || IDB || N ||E(Kb, [Ks ||

Consider the following protocol: AKDC: KDC A: A B: B A: IDA

Consider the following protocol: AKDC: KDC A: A B: B A: IDA || IDB|| N E(Ka, [Ks || IDB || N ||E(Kb, [Ks || IDA])) E(Kb, [Ks||IDA]) E(KS, N)A B: E(Ks, f(N)) a. Explain the protocol. b. Can you think of a possible attack on this protocol? Explain how it can be done. c. Mention a possible technique to get around the attack-not a detailed mechanism, just the basics of the idea.

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