Key points are not available for this paper at this time.
Ever since humans started talking, we have been trying to work out a way of communicating information to one person, while keeping it secret from everyone else. Certainly, when you start to look at encryption methods, you are introduced to the ‘Caesar’ Cypher. which shows how old encryption is and how simple old ciphers now are for us to break.
Simon Heron (2009) studied this question.