Secure Data Management using Distributed Storages for Stronger Cybersecurity in Cloud Service

Abstract

As data used in IT services increases exponentially, cloud storage-based services that normally store user data on the cloud storage which is controlled by cloud storage service providers and restore data only when necessary are being activated. Accordingly, the importance of technique for securing data stored in cloud storage is increasing. In particular, as the importance of data increases, an attack on cloud storage services is considered not as a simple threat to the safety of individual services, but as an attack from the perspective of cybersecurity that can threaten the well-being of society where the stored data is utilized. In this paper, we propose a technique for providing cloud service safety. Specifically, we consider three major requirements for providing information security of data stored in the cloud storage: confidentiality, integrity, and availability. In the case of the previously proposed technique, only some of the three major requirements are intensively analyzed and countermeasures are proposed. Since there is a corresponding technique for individual requirements, it is possible to respond to each security requirement by parallelly applying the existing technologies. However, in the case of a system designed with such simple approaches, it is difficult to provide all security requirements by actually grafting it due to the difference in the configuration method of each hypothesis, or even if possible, efficiency impairment occurs. In this paper, we designed a technique that can efficiently meet the three major requirements from this point of view.