Q1. A message is converted into numeric form by letting A = 1, B = 2, C = 3, ..., Y = 25 and Z = 26 or 0. Obtain the following Hill 2 cipher of the plain text "ATTEMPT" by using the key matrix [4 1] [5 5] Also decipher the text.
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A = 1, T = 20, E = 5, M = 13, P = 16, T = 20 Show more…
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