Question: Exercise 1 . Secure MAC [ 2 0 points ] Suppose MAC is a secure MAC algorithm. Define a new algorithm: M A C '

Exercise 1. Secure MAC [20 points] Suppose MAC is a secure MAC algorithm.
Define a new algorithm:
MAC'(k,m)=MAC(k,m)||MAC(k,m).
Prove that MAC' is also a secure MAC algorithm via a security reduction. Follow
these steps:
Show how verification works.
State the contrapositive.
Describe your reduction.
Write the Security Analysis for your reduction.
Exercise 1 . Secure MAC [ 2 0 points ] Suppose

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