An avid math student sends an encrypted matrix message E to a friend who has the coding matrix C The friend can decode E to get message M by multiplying E by C 1 If what is the message (0 space, 1 A, 2 B, 3 C, etc ) E 11 42 61 47 62 18 16 4 19 12 7 10 7 41 34 47 55 and C 1 1 12 101 1 121 12 1101 21

Question: An avid math student sends an encrypted matrix message E to a friend who has the coding matrix C. The friend can decode E to

An avid math student sends an encrypted matrix message E to a friend who has the coding matrix C. The friend can decode E to get message M by multiplying E by C⁻¹. If

E 11 42 61 47 62 18 16 4 19 12 7

what is the message? (0 = space, 1 = A, 2 = B, 3 = C, etc.)

E 11 42 61 47 62 18 16 4 19 12 7 10 7 41 34 47 55 and C 1 1 12 101 1 121 12 1101 21

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