Abstract

Abstract:In Cloud Systemconsidering Security issue We propose a Data Division and Replication method incloud i.e DRDC which handles the security issues and maintain the performance.In this system, file  uploaded by theclient is first encrypted then divided into fragments. Then these fragments arereplicated means another copy of that fragment is created over the cloud nodes.Each node contains only a single fragment during the fragmentation andreplication process. Thus if any one or another of the node is added by hacker,no significant information is obtained, and thus security of System  is maintained. To further increase the security,nodes are separated by using  T-coloringgraph method. In T Coloring Method no two adjacent nodes at same place Due tothe T-coloring, the effort needed by an attacker to break the security isincreased multiple times or it is difficult for hacker.