Question: The Hill cipher succumbs to a known plaintext attack if sufficiently many plaintext-ciphertext pairs are known. It is even easier to break the cipher if

The Hill cipher succumbs to a known plaintext attack if sufficiently many plaintext-ciphertext pairs are known. It is even easier to break the cipher if Eve can trick Alice into encrypting a chosen plaintext, a chosen plaintext attack. Describe such an attack.

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