Question: Suppose that plaintext message units are trigraphs in the 32 letter alphabet, a-z corresponds to 0-25, blank=26, ?=27, !=28, .=29, =30, $= 31 . You

Suppose that plaintext message units are trigraphs in the 32 letter alphabet, a-z corresponds to 0-25, blank=26, ?=27, !=28, .=29, =30, $= 31 . You receive the sequence of Ciphertext message units 152472, 116116, 68546, 165420, 168261. The public key is the sequence {24038, 29756, 34172, 34286, 38334, 1824, 18255, 19723, 143, 17146, 35366, 11204, 32395, 12958, 6479} , and the secret key is b = 30966, m = 47107. Decipher the message.

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