Encrypting Language

My Encrypting Language V2.0

When I tried my previous code once more, I found out a pretty serious bug. I tried to fix the error but I couldn't do it. So I thought I start over!

This is a very simple way of encrypting, but I'm not telling how it works because that would break the code (if you really want to know how it works, take a look at the code).

With sending encrypted messages, there is always a sender and a receiver. In order to make this encrypting method work, they need the same character string and the same key.

The key is randomly generated. However, the more digits the key has, the greater the number of possibilities is (10 ^ keylength) and how harder it is to crack the code.

This system is really safe because of the key, since it's not repeated, but the followup digits are calculated. This way, letter frequency has no influence. When you run this code, you will see it gives a different output every time another key is generated. When you only change 1 digit by only 1 (e.g. 5 to 6 or 5 to 4), that will have a huge, huge impact on the de/encrypting of the string.

Encrypt

Decrypt

Please let me know what you think of it!