Message                                         Encoding Matrix

HELP IS ON THE WAY                         

(a) Write the uncoded row matrices for the message.

Now we can partitioning the message (including blank spaces, but ignoring punctuation)

into groups of two produces the following row matrices.

[8  5]   [12  16]   [0   9]  [19  0]   [15   14]  [0  20]  [8    5]  [0   23]   [1   25]

 H  E      L      P            I      S             O    N            T     H   E          W       A    Y

(b) Write the encode the message using the encoding matrix as follows: \ \

Uncoded Matrix  Encoding Matrix    Coded Matrix

             [8  5]                         = 

        [12  16]                          = 

            [0  9]                          = 

          [19  0]                          = 

       [15  14]                           = 

         [0  20]                           = 

           [8  5]                           = 

        [0  23]                           = 

        [1  25]                           = 

So, the sequence of coded row matrices is.

Finally removing the matrix notation produces the following cryptogram.

The solutions are

(a) The uncoded row matrices for the message is.

(b) The encode the message by using the encoding matrix as follows:.