Construction of efficient PDP scheme for Distributed Cloud Storage. By Manognya Reddy Kondam.

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Presentation transcript:

Construction of efficient PDP scheme for Distributed Cloud Storage. By Manognya Reddy Kondam

Introduction Provable data possession(PDP) is a technique for ensuring the integrity of data in storage outsourcing. In this project, we address the construction of an efficient PDP scheme for distributed cloud storage to support the scalability of service and data migration, in which we consider the existence of multiple cloud service providers to cooperatively store and maintain the clients data. In this, we present the a cooperative PDP (CPDP) scheme based on homomorphic verifiable response and hash index hierarchy. We prove the security of our scheme based on multi-prove zero-knowledge proof system, which can satisfy completeness, knowledge soundness, and zero knowledge properties.

Continued… In addition we articulate performance optimization mechanisms for our scheme, and in particular present an efficient method for selecting optimal parameter values to minimize the computation cost of clients and storage service providers. This experiments show that solution of this introduces lower computation and communication overheads in comparison with non-cooperative approaches.

Module Description In our system, the each cloud admin consist of data blocks, the cloud user upload the data to multi cloud. Cloud computing environment is constructed based on open architectures and interfaces, it has the capability to incorporate multiple internal and/or external cloud services together to provide high interoperability. In this system the Trusted Third Party, view the user data blocks and uploaded to the distributed cloud. In distributed cloud environment each cloud has user data blocks.

If any modifications tried by cloud owner alert is send to Trusted Third Party.

The users who have large amount of data to be stored in multiple clouds and have the permissions to access and manipulate stored data. The users data is converted into data blocks, that data blocks is uploaded to the cloud. The TPA view the data blocks and upload in multi cloud. The user can update the uploaded data. If the user wants to download their files, the data in multi cloud is integrated and downloaded.

Software System configuration Operating system : Windows 95/98/2000/XP Application Server : Tomcat5.0/6.X Front End : HTML, Java, Jsp Scripts : JavaScript Server side Script : Java Server pages Database : Mysql Database Connectivity : JDBC

Conclusion We presented the construction of an efficient PDP scheme for distributed cloud storage. Based on homomorphic verifiable response and hash index hierarchy, we have proposed a cooperative PDP scheme to support dynamic scalability on multiple storage servers. We also showed that our scheme provided all security properties required by zero knowledge interactive proof system, so that it can resist various attacks even if is deployed as a public audit service in clouds. Furthermore, we optimized the probabilistic query and periodic verification to improve the performance