1 a Using the original plaintext below in bold quotes (e.g. use only alphabet characters, a-z), write a program to encrypt plaintext into ciphertext using the Caesar cipher. "If he had anything confidential to say, he wrote it in cipher, that is, by so changing the order of the letters of the alphabet, that not a word could be made out." b) Using the ciphertext you generated from Problem la, write a program to decrypt ciphertext into plaintext using the Caesar cipher. Your program is to print or graph results Please use MATLAB. And below I have worked out the example. Please use the same material for programming. 0 6 22 23 24 25 1 2 3 4 5 d ef 7 8 9 10 11 12 13 14 15 16 17 18 hlili 1 19 t 20 21 u V a bc g k m n o p a r t S w Y z e hili m o Z Plain a b c d f Cipher D E F G H I J n Q p 9 S T NOP r U 5 V t u W X V Y w Z A Y B KIL M R C Plain text- if he had anything confidential to say, he wrote it in cipher, that is, by so changing the order of the letters of the alphabet, that not a word could be made out. Cipher text- LI KH KDG DQBWKLQJ FRQILGHQWLDO WR VDB, KH ZURWHLW LQ FLSKHU, WKDW LV, EB VR FKDQJLQJ WKH RUGHURI WKH OHWWHUV RI WKH DOSKDEHW, WKDW QRW D ZRUG FRXOG EH PDGH RXW. C = Eck, p) - (p+k) mod26 p=D(k, C)=(C-k)mod26 | (Ctrl) Thanks