Question: Please help me with this question! 6. Certificates and PKI. (10 points) In this question, we assume that all public keys are known to everyone.

Please help me with this question!

Please help me with this question! 6. Certificates and PKI. (10 points)

In this question, we assume that all public keys are known to

6. Certificates and PKI. (10 points) In this question, we assume that all public keys are known to everyone. Alice attempts to send a large file to Bob. Alice wants to ensure that only Bob sees the content. They followed a protocol as below to exchange the file: a) Alice and Bob use the Diffie-Hellman key exchange to generate a session key K. b) Alice encrypts the file F with Bob's public key to obtain F. c) Alice encrypts F with K to obtain F. d) Alice sends F to Bob. 6.2. Is this protocol efficient? If it is not efficient, please explain the reasons

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