Question: Design a two-message authentication protocol, assuming that Alice and Bob know each others public keys, which accomplishes both mutual authentication and establishment of a session

Design a two-message authentication protocol, assuming that Alice and Bob know each others public keys, which accomplishes both mutual authentication and establishment of a session key.

9.4 Mediated Authentication (with KDC) describes several protocols. For each of those protocols, describe which nonces have to be unpredictable (i.e., sequence numbers would not be good).

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