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(i) Encrypt the following message: S D Plaintext: Keystream: M R 23 15 21 14 11 11 2 8 9 90 1 7 Insert TWO

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(i) Encrypt the following message: S D Plaintext: Keystream: M R 23 15 21 14 11 11 2 8 9 90 1 7 Insert TWO (2) characters in each box (ii) Using the ciphertext produced in (i), find a key so that the cipher text decrypts to the plaintext: CASHNOT NEEDED Insert EACH key in each box

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