Efficient distribution and improved security for reliable cloud storage system

The distributed storage systems (DSS) are constructed by large number of nodes which are interconnected over a network. Each node in the network is vulnerable and a potential risk of attack. The attackers can eavesdrop the nodes and possibly modify their data. Despite the considerable efforts, both in industry and in academia, high reliability and security remain major challenges in running large scale distributed systems. Therefore, we design a secure Twin code framework for a distributed storage network that simplifies both data reconstruction and efficient node repair. We examine it in an eavesdropper model, where the passive attackers can access to the stored data or/and downloaded data during the node repair and prove that the new Twin code gives better results than the MBR and MSR codes, regarding the security in the system.