Question: Let P be prime and let b be an integer which is not divisible by p. Let h(x) = b^2*x(mod p). Explain why h(x) is

Let P be prime and let b be an integer which is not divisible by p. Let h(x) = b^2*x(mod p). Explain why h(x) is not a good cryptographic hash function? (Hint: This can be accomplished by using Fermat's Little Theorem.)

someone answered this but Im still not really understanding how Fermat's theorem applies to the the hash function above.

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