Cryptography assignment

I have done several C++ projects and this one is not a very completed one, the most important feature of this assignment is that you generate data, encrypt it and then try to decrypt it, so you can verify if your program works perfectly or not. Since you are very sensitive about the outcome this is the way you can check the program. P.S. I had another account in freelancer before and with that I done about 17 projects, for no reason they closed my account and I started with this new one, anyway dont worry about experience, You can pay me all the money after you checked the program.