Question: 4. Find the affine cipher (if it exists) that encrypts the plaintext BC into the ciphertext AD. If no such affine cipher exists, show why

4. Find the affine cipher (if it exists) that encrypts the

4. Find the affine cipher (if it exists) that encrypts the plaintext BC into the ciphertext AD. If no such affine cipher exists, show why it does not exist

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