Question: 2 . Design a secure communication protocol that allows: Alice to request a private file from Bob Bob to respond by sending the requested file

2. Design a secure communication protocol that allows:
Alice to request a private file from Bob
Bob to respond by sending the requested file to Alice, where both
symmetric and asymmetric (or public-key) cryptosystems including
secure hash functions are available for the protocol design.
Explain how the designed protocol operates.

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