Quantum Computing, Cryptography, Computer Science.
message we add n to all the numbers. If n is 3 then our message would become 11 8 15 15 18. The important caveat is that if our number is bigger than 26 we go back to counting at 1. Ff we have the letter y it has the number 25. Then if we add 3 to it we would normally get 28 but in our case, we get