The Cyber Security vulnerabilities are in every layer of the Open Systems Interconnected (OSI) Model from the application layer down to the physical layer. A common approach to encrypt the messages between Bob and Alice is for Bob to authenticate Alice via cryptographic techniques. The shared secret is established between Bob and Alice. Alice generate a digital signature via an enciphering algorithm. Bob follows by deciphering a digital signature to verify it matches an expected result to authenticate the message is from Alice.