A Group Key based Security Model for Big Data System

Abstract

Recently Big data is in the spotlight and several NoSQL systems have been appeared in order to process large scale data. Among them Cassandra provides high scalability and availability with internal cluster structure. However, it does not provide enough security functionalities, especially transferred messages between internal cluster nodes are easily exposed by outside adversaries. In this paper a group key based security model for Cassandra is proposed. Cluster membership authentication and message confidentiality is provided by using of the group key, and the key is efficiently updated by decentralized approach where the cluster is divided into several subgroups considering Cassandra structure. Our model contributes preventing Cassandra cluster from illegal outside access attempts.

A study on the energy saving of lighting through the development of integrated control of multifunctional shading system

“…Through the Central Control System (SCADA), it is possible to set the condition and temperature of various facilities such as lighting and to perform various additional functions such as manual and automatic. Through interworking with IoT, integrated control is possible using mobile and tablets regardless of the inside or outside of the building (Kim, 2016;Liu, 2016).…”