PROPOSAL OF LIGHTWEIGHT CRYPTOGRAPHIC ALGORITHM FOR HOME AUTOMATION

Lightweight cryptography is a new concept that refers to a method of bettering data security through using fewer resources and providing higher throughput, conservatism, and low power consumption. Every fraction second, the Internet of Things (IoT), which links billions of devices, collects an enormous amount of data. When the number of devices grows, so does the amount of data generated, and the protection of that data becomes a concern. In IoT architecture, devices are basically smaller and low-powered. Because of their complexity, traditional encryption algorithms are computationally costly and require several rounds to encrypt, effectively wasting the limited resources of IoT devices. A less complex algorithm, on the other hand, can compromise the necessary integrity. There are many lightweight cryptography algorithms available, and we use one of the symmetric encryption algorithms called Advanced Encryption Standard (AES). The speed of this algorithm is six times that of triple DES. Since all around us is automated in today's world, automation is playing an increasingly important role in human life. The term "smart home" encompasses not only the reduction of human effort but also energy conservation and time management. Home automation enables us to control household appliances such as lights, doors, fans, and air conditioners, which require a large number of energy-constrained devices that constantly interact with one another. The security of this home automation system must not be compromised. This problem of security for automated systems is often solved by using lightweight cryptographic algorithms. For this purpose, a lightweight security algorithm is proposed in our paper that is (AES)