Question: use the hill cipher sigma ( X ) = KX + D , with K = [ 7 8 3 7 ] , D =

use the hill cipher sigma (X)= KX+ D, with K=[7837], D=[45], over Z26 to a.\sigma (x)=Kx+D, with K=[[7,3],[8,7]],D=[[4],[5]], over Z_(26)
to (a) encipher HAPPY and (b) decipher JHFK.
use the hill cipher sigma ( X ) = KX + D , with K

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