Chapter 4.5, Problem 81E

Problems $81\text{-}84$ require the use of a graphing calculator or computer. Use the $4\times 4$ encoding matrix $B$ given below. Form a matrix with $4$ row’s and as many columns as necessary to accommodate the message.

$B=\left[\begin{array}{cccc}2& 2& 1& 3\\ 1& 2& 2& 1\\ 1& 1& 0& 1\\ 2& 3& 2& 3\end{array}\right]$

Cryptography. Encode the message "DEPART ISTANBUL ORIENT EXPRESS" using matrix $B$.