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Given the ciphertext: EEEYK OLEXA DAJIT DMEUI STOIR KSZHA AYRVE RRNY Suppose the cipher used is columnar transposition and the key length is 3. a)

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Given the ciphertext: EEEYK OLEXA DAJIT DMEUI STOIR KSZHA AYRVE RRNY Suppose the cipher used is columnar transposition and the key length is 3. a) (2 marks) What is the number of all possible column readout orders for the key? b) (3 marks) Decrypt the plaintext

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