Construct an affine cipher that uses only uppercase letters of English alphabet encoded as elements of Z26 as shown in the table below: ABC D EFGH IJKLM 0123456789 10 11 12 a) Choose a proper key k = (a,b) where a + 1 and b # 0 b) Write the encryption function c) Write the decryption function d) Encrypt the first two letters of your name NOP ORIST UVIWX YZ 13 14 15 16 17 18 19 20 21 22 23 24 25

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