Caesar Algorithm

Caesar is an Algorithm which create by Yulius Caesar for encrypt his message text with
Chiper = Plain + 3 ;

Modern Caesar is not only plain + 3, but the key can be the other of modulus 26 or can use the mix alphabtic for encryption.

we can make a php program of caesar :

1. make the input page.

2. make the algorithm of caesar.

3. Testing the program.

Text(with point '.') :
Key(a number) :