Question: This is cryptography mixed with linear algebra Please answer both a and b, thank you. (10 points) 3. Hill cipher encryption Given the Hill encryption

This is cryptography mixed with linear algebra

Please answer both a and b, thank you.

(10 points) 3. Hill cipher encryption Given the Hill encryption matrix 1 4 7 I l 5 11 I please do the following: a. Encrypt the plaintext "winter". Your answer is the ciphertext containing six uppercase letters. b. Calculate and write down the decryption matrix for the above encryption matrix

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