Caesar cipher is a very simple encryption method and is easily cracked if one studies the frequency of repeating letters. To improve the strength of the encryption method a more complex key could ...

There are also simple encryption options for Mac OS users, and Linux users have this option directly during installation.

Encryption requires the use of a key. The key is secret as to how the message has been disguised. A simple method of encryption requires the use of a technique known as the Caesar cipher.