Please write them in C++! Please use only and accordingly. Do NOT use or in the code. We have not learned about them yet.

1 Affine Cipher (70 points) The Affine cipher is a cryptographic mcthod for encrypting text such that it becomes unrcadable to a party without access to the cryptographic key. The encryption and decryption opcrations are simple shifts of the alphabet letters in a cyclic fashion. Mathematically, for a key k , the encryption and decryption are defined as Encryption: c-(a-z + ) mod 26 , 1