درک رمزنگاری ، رمزنگاری چیست و چه کاربردی دارد؟

درک رمزنگاری ، رمزنگاری چیست و چه کاربردی دارد؟
The words encryption and decryption are quite familiar to us. You might have already come across these technical words in this video series, as well as in your daily life. What is encryption, and why is it needed? By the end of this video you will also understand the magic that prime numbers play in encryption and decryption technology.