(a) Encrypt the message I WANT TO RETURN TO CAMPUS using the cipher C=7P+9 mod 26....

 

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(a) Encrypt the message I WANT TO RETURN TO CAMPUS using the cipher C=7P+9 mod 26. Fill in the following table and use it for encryption. N 7N +9 mod 26 Letter Letter N 7N +9 mod 26 Letter Letter A 0 N 13 B 1 0 14 C 2 P 15 D 3 Q 16 E 4 R 17 F 5 S 18 G 6 T 19 H 7 U 20 I 8 V 21 J 9 W 22 K 10 X 23 L 11 Y 24 M 12 25 (b) Find the function that is needed to decrypt the message. (a) Encrypt the message I WANT TO RETURN TO CAMPUS using the cipher C=7P+9 mod 26. Fill in the following table and use it for encryption. N 7N +9 mod 26 Letter Letter N 7N +9 mod 26 Letter Letter A 0 N 13 B 1 0 14 C 2 P 15 D 3 Q 16 E 4 R 17 F 5 S 18 G 6 T 19 H 7 U 20 I 8 V 21 J 9 W 22 K 10 X 23 L 11 Y 24 M 12 25 (b) Find the function that is needed to decrypt the message.