A Constructive Multilevel Security System with Cryptographic Techniques by using Cyber-Physical System in the Space/Defense Applications

Protecting sensitive data and maintaining the confidentiality is the most important role in this world. Especially many areas like Space, Defense, Education, Finance, Communications, international affairs sectors. The Multilevel Security (MLS) approach provides a relevant framework for the analysis of security systems regarding cross-level approach through the cyber-physical system. We propose a new key management system for multilevel security in the threat model security policies- security mechanism. The new approach is to construct the MLS through Cyber Physical Systems (CPS) in association with advanced cryptographic tools to protect the defense confidential data from unauthorized, and also to make sure that the data is not released to any counterfeit users. In this paper, a prototype is selected to explain the security of cryptographic strategy like symmetric encryption, message authentication codes, public key encryption, key agreement protocols, and digital signature schemes.