I need to design a final project to complete before Christmas vacation for my programming class. My teacher suggested I write a program that encrypts and decrypts messages.
Now, don't get me wrong, I'm not a helpless student programmer, and I'm not asking anyone to write any code for me. I'd just like some suggestions as to what encryption method to use. A comprehensive description of an algorithm or some pseudocode or a link to a good website would be greatly appreciated.
A few considerations:
This course is a first semester course in C++. Although I know how to use arrays and other things we haven't been taught in class, my teacher doesn't appreciate it when I use those concepts in my programs in his class.
When I did a search of this forum and Google for encryption methods, I kept seeing ciphers using the XOR(^) operator. Although I would like to learn about it, my teacher wouldn't appreciate it if I used something like that that he didn't teach.
My project needs to keep my interest untill Christmas break, so I need something more complicated than just a Caesar cipher.
Sorry for the long post. I will be grateful for any help I get. Thank you.