Use MATLAB to solve the following matrix problem. Show code used.

4. Social security numbers consist of 9 digits which can be stored in a 3 x 3 matrix. (Ex. The SSN 123-45-6789 is (1 2 3) entered into a matrix as S- 4 5 6. The number can be encrypted using the key matrix K 1 0 0 If C is the matrix containing the original SSN, then the encrypted number E, is calculated using E (a) Find the encryption of the SSN: 231-04-6314 (b) If the encrypted version of the number is E-451-34-2150, find the orignal SSN. CK