Only part B

Solve for Name: Adnan Anwar Registeration : Bse201050

1. Given a message and positive integers a and b less than 36 with geda, 36)=1, encrypt this message using an affine cipher with key (a,b); and given a message encrypted using the affine cipher with key(a,b), decrypt this message, by first finding the decryption key and then applying the appropriate decryption transformation. Message should be your complete name and registration number. Prepare you table of 26 alphabets and ten integers. SE2053 Discrete Structures Page 1 of 2 II. Encrypt the message using blocks of five letters and the transposition cipher based on the permutation of {1, 2, 3, 4, 5) with o(1) = 3, 6(2) = 5, (3) = 1, (4) = 2, and o(5) = 4. For this exercise, use the letter X as many times as necessary to fill out the final block of fewer then five letters. The message should be your registration number along with your complete name