S-AES Encryption Procedure Code : #include <bits/stdc++.h> using namespace std ; //Map for S-Box Substituion for Encryption. unordered_map < string , string > Sbox = { { "0000" , "1001" }, { "0001" , "0100" }, { "0010" , "1010" }, { "0011" , "1011" }, { "0100" , "1101" }, { "0101" , "0001" }, { "0110" , "1000" }, { "0111" , "0101" }, { "1000" , "0110" }, { "1001" , "0010" }, { "1010" , "0000" }, { "1011" , "0011" }, { "1100" , "1100" }, { "1101" , "1110" }, { "1110" ,...