Explain the concept of zero knowledge proofs, Computer Network Security

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(a) Describe the concept of zero knowledge proofs. Give a practical example.

(b) Explain how a one way hash function works.

(c) What are message authentication codes?

(d) Describe how the Diffie-Hellman key exchange may be used to establish a session key. Why will a passive observer be unable to establish the session key despite observing all communications?


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