C++ program to encrypt/decrypt text files using Caesar cipher (shift by 2).
- Normal (single-threaded)
- Process-based (fork)
- Multithreaded (threads + semaphores) — fastest
git clone https://github.com/alahmad-loay2/encryption-project.gitcd to directory ./normal-way ./multi-process ./multi-thread
multi threading version was the fastest due to having a shared memory and not being a cpu intesive task


