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Suppose that Alice and Bob decide to always use the same IV instead of choosing IVs at random. a. Discuss a security problem this creates
Suppose that Alice and Bob decide to always use the same IV instead of choosing IVs at random.
a. Discuss a security problem this creates if CBC mode is used.
b. Discuss a security problem this creates if CTR mode is used.
c. If the same IV is always used, which is more secure, CBC or CTR mode? Provide a rationale to defend your answer for part (c).
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