Question: Suppose H( ) is a collision-resistant hash function that maps a message of arbitrary bit length into an -bit hash value. Is it true that,

Suppose H( ) is a collision-resistant hash function that maps a message of arbitrary bit length into an -bit hash value. Is it true that, for all messages x, x′ with x ≠ x′ we have H(x) Z H(x′) Explain your answer.

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