The Uncrackable Cipher

One-time pad (Vernam Cipher)

The people always wonder, is there any way to design uncrackable cipher? Short answer is yes. But in practice, there is no way to use them.

What are Cryptology, Crpytography, Cryptoanalysis

The short answer:

Cryptology is a science which is interested by secure communication on an insecure communication channel.

Today, all communications passes over unsecured channels like letters, wired and wireless channels which sending data over. So, anyone able to interrupt or listen the message who is in same channel.