Chapter 4: Design of a Soft Computing Based Cryptosystem for Data Security in IoT in Defence Industry

The military protects all citizens and should protect itself. The expanding use of information technology has boosted cyberattacks. The military industry must secure cyberspace with flexible and robust capabilities. The goal is to identify, protect, respond to, and prevent cyber attacks that could harm military systems, communication networks, operations, and Internet-based weapons and gadgets. Thus, information or data security is the main theme for robust communication system in military industry. In this chapter, the authors are trying to develop a cryptosystem that secures the communication of information in a wireless network. This system also helps in the defence industry for security in the Military Internet of Things. In any cryptosystem, the secret key is the backbone of any encryption and decryption process. The measurement of robustness in any cryptographic technique is based on the randomness of the secret key. Randomness implies the unbreakable cipher. Here, the authors have proposed a cryptosystem which includes a key generation process using a recurrent neural network, gravitational search algorithm, and genetic algorithm; a symmetric key-based key wrapping process for key transmission, and a format preserving encryption (FPE) technique for encryption and decryption algorithm. The proposed cryptosystem is suitable for fast, real-time applications. Military Internet of Things is such a real-time application that may use this system. Different types of results and analyses suggest that the proposed scheme satisfies the demands of benchmarks such as maximum correlation, robustness, randomness, and complexity.