I. Introduction
The revolution of two-way smart grid depends on cyber physical system, internet of things and information communication technology for executes operation, control, command of energy management. The promising IoT based bi-directional smart meter capable of advanced sensing, measurements, control and management of electricity data transmission from remote area through the public and private communication system to utility reginal server. Thus, data encryption, decryption and key agreements is a critical technology are essential to protect privacy and protections of data and information during insecure communications and transmission system [1]. In smart grid through advanced metering infrastructure gathers data from large-scale IoT devices, namely smart meters, electronics intelligent devices, sensors, and network gateways. The smart meter automatically collects electricity consumptions data, demand response, peak pricing states and real time interaction and send data to the data aggregator point (utility regional server) server every 15 min time cycle [2]. Data acquiring without encryption through a public channel creates a lack of privacy and raised cyber security [3].