Question: 5. (a) What is a collision-resistant hash function? (4 marks) (b) Is the checksum function collison-resistant? Explain your answer. (4 marks) (c) Provide a concise

5. (a) What is a collision-resistant hash function? (4 marks) (b) Is the checksum function collison-resistant? Explain your answer. (4 marks) (c) Provide a concise description of a digital signature protocol (in the form Alice sends this, Bob sends that...). (6 marks) (d) What is the role of collision-resistant hash functions in establishing robustness of the protocol against malicious attacks? (6 marks)

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